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Arterbery et al., The American Journal of Human Genetics - Hundreds of genes have been reported as causes of cerebral palsy, yet there is no agreed model of what a pathogenic variant in a child with CP actually means. This study treats CP as a phenotypic feature that some genetic disorders make more likely, tests the reported genes against the population prevalence of CP across tens of thousands of published individuals, and finds statistical evidence of association for only 89 of 515, before applying that stratification to genome sequencing of 460 children with CP. Key terms: cerebral palsy, Mendelian disease, genome sequencing, Human Phenotype Ontology, gene-disease association. Study Highlights:Across 21 published genomic diagnostic cohorts, variants deemed causal of cerebral palsy had been reported in 515 genes, with no consensus on whether such variants cause CP, mimic it, or coexist with it. The authors modelled CP as a phenotypic feature with a known population prevalence and applied a Bonferroni-corrected binomial test to 280 genes drawn from 5,508 publications describing 43,897 individuals, rejecting the null hypothesis of no association for 86 genes, and for 89 when combined with the genes enriched across the CP sequencing cohorts. Genome sequencing of 460 children with CP from 453 families at Shriners Children's identified pathogenic or likely pathogenic variants in 60 genes in 15.8% of the children. Only 16 of those 60 genes had significant literature evidence for CP association, which still represented a 16.3-fold enrichment over the overlap expected by chance. The results support a stratified approach in which the strength of evidence for each gene shapes how a molecular finding in a child with CP is interpreted. Conclusion:A pathogenic variant found in a child with cerebral palsy does not carry the same weight for every gene: for most of the 515 genes reported so far, the literature does not yet provide statistical evidence that the associated disorder raises the likelihood of CP. Treating CP as a phenotype with graded genetic evidence offers a framework for attributing causality more carefully in precision genomic diagnosis, while leaving open that more genes may prove to be associated as data accumulate. Music:Enjoy the music based on this article at the end of the episode. Article title:A phenotypic paradigm for cerebral palsy genetics First author:Arterbery Journal:The American Journal of Human Genetics DOI:10.1016/j.ajhg.2026.08.007 Reference:Arterbery, A.S., Gargano, M.A., et al., and Robinson, P.N. (2026). A phenotypic paradigm for cerebral palsy genetics. The American Journal of Human Genetics 113, 1972-1986. https://doi.org/10.1016/j.ajhg.2026.08.007 License:This episode is based on an open-access article published under the Creative Commons Attribution 4.0 International License (CC BY 4.0) – https://creativecommons.org/licenses/by/4.0/ Support:Base by Base is independent and ad-free — no sponsors, no paywall. If an episode was worth your time, chip in and keep the papers audited and the original songs coming:❤️ Support monthly: https://buy.stripe.com/cNifZhclVebvagk2JDgEg01☕ One-time donation: https://donate.stripe.com/7sY4gz71B2sN3RWac5gEg00▶️ Watch with chapters on YouTube: https://www.youtube.com/@basebybase More at basebybase.com On PaperCast Base by Base you'll discover the latest in genomics, functional genomics, structural genomics, and proteomics. Episode link: https://basebybase.com/episodes/cerebral-palsy-genetics-phenotypic-model QC:This episode was checked against the original article PDF and publication metadata for the episode release published on 2026-09-13. QC Scope:- article metadata and core scientific claims from the narration- excludes analogies, intro/outro, and music<...

MacGregor et al., The American Journal of Human Genetics - Pathogenic TP53 variants found in blood have long been read as inherited Li-Fraumeni alleles, but many turn out to be somatic clones that grew with age. Using whole-exome data from 469,391 UK Biobank participants, this study combines variant allele fraction with haplotype sharing to tell the two origins apart, and finds that in cancer-free middle-aged adults the risk is mostly somatic and mostly hematological. Key terms: TP53, clonal hematopoiesis, Li-Fraumeni syndrome, UK Biobank, variant classification. Study Highlights:Rare coding TP53 variants were called in 469,391 UK Biobank participants aged 40 to 70, and 1,753 nonsynonymous variants were sorted by variant allele fraction combined with haplotype sharing across individuals carrying the same allele. Of 55 unique pathogenic TP53 variants detected, only six were classified as germline, and most of those sit at positions linked to partial rather than complete loss of p53 function. Classic Li-Fraumeni alleles behaved like somatic clonal expansions: their prevalence rose with age at an odds ratio of 2.3 per decade, while likely germline variants showed no age trend. Incident cancer risk separated sharply by origin, with the signal for somatic and inconclusive variants driven almost entirely by blood cancers rather than solid tumors, reaching a hazard ratio of 16.5 for the high-allele-fraction inconclusive class. The prevalence of somatic expansion tracked missense pathogenicity, suggesting that clonal growth in blood is itself an in vivo readout of how much a variant damages p53. Conclusion:In a population cohort of healthy middle-aged adults, most apparently pathogenic TP53 variants detected in blood reflect somatic clonal expansion rather than inherited predisposition, and the cancer risk they carry is predominantly hematological. Distinguishing the two origins with allele fraction and shared haplotypes gives a scalable way to interpret TP53 variants outside the clinic, where classic Li-Fraumeni assumptions do not hold. Music:Enjoy the music based on this article at the end of the episode. Article title:Shared inheritance reveals landscape of somatic and germline cancer risk in TP53 First author:MacGregor Journal:The American Journal of Human Genetics DOI:10.1016/j.ajhg.2026.07.011 Reference:MacGregor, H.A.J., Blundell, J.R., and Easton, D.F. (2026). Shared inheritance reveals landscape of somatic and germline cancer risk in TP53. The American Journal of Human Genetics 113, 1916-1928. https://doi.org/10.1016/j.ajhg.2026.07.011 License:This episode is based on an open-access article published under the Creative Commons Attribution 4.0 International License (CC BY 4.0) – https://creativecommons.org/licenses/by/4.0/ Support:Base by Base is independent and ad-free — no sponsors, no paywall. If an episode was worth your time, chip in and keep the papers audited and the original songs coming:❤️ Support monthly: https://buy.stripe.com/cNifZhclVebvagk2JDgEg01☕ One-time donation: https://donate.stripe.com/7sY4gz71B2sN3RWac5gEg00▶️ Watch with chapters on YouTube: https://www.youtube.com/@basebybase More at basebybase.com On PaperCast Base by Base you'll discover the latest in genomics, functional genomics, structural genomics, and proteomics. Episode link: https://basebybase.com/episodes/tp53-somatic-germline-cancer-risk-biobank QC:This episode was checked against the original article PDF and publication metadata for the episode release published on 2026-09-10. QC Scope:- article metadata and core scientific claims from the narration- excludes analogies, intro/outro, and music- transcript coverage: Audited the scientific body from the TP53 and Li-Fraumeni background through clonal hematopoiesis, the allele-f...

Quenez O et al., The American Journal of Human Genetics - Rare copy-number variants were called from 22,319 exomes covering early-onset Alzheimer disease, late-onset disease and unaffected controls, then tested gene by gene for a dosage effect. One locus came back with the cleanest signal in the field: at the central 22q11.21 region, deletions appeared only in early-onset cases, including one that arose de novo, while duplications piled up in controls, with late-onset cases sitting in between. Replication in nearly 400,000 further individuals confirmed it, and overexpressing SCARF2, one of the genes in the narrowed interval, increased amyloid-beta uptake in cells - the direction the protective duplications would predict. Key terms: copy-number variants, Alzheimer disease, 22q11.21, SCARF2, gene dosage. Study Highlights:The authors called rare copy-number variants from 22,319 harmonized exomes, comprising 4,150 early-onset Alzheimer cases at 65 years or younger, 8,519 late-onset cases and 9,650 unaffected controls, and found that early-onset cases carried an excess burden of rare CNVs affecting coding genes, driven particularly by deletions in genes already implicated in the disease. Pooling short truncating variants with deletions into a single loss-of-function analysis implicated ABCA1 with an odds ratio of 5.77 and ABCA7 deletions with an odds ratio of 2.29, and raised CTSB as a new candidate at an odds ratio of 5.03. An exome-wide gene-level dosage analysis then flagged 18 genes across five loci below a 10 percent false discovery rate, of which the central 22q11.21 region stood out: deletions were restricted to early-onset cases and absent from all 9,559 controls, duplications were enriched in controls, and late-onset cases fell in between, a gradient the authors narrowed to the SCARF2-KLHL22-MED15 interval. Replication across 33,977 additional cases and 362,322 controls confirmed the association at exome-wide significance, with duplications carrying an odds ratio of 0.34 and a mega-analysis p value of 5.52 times ten to the minus seven. Transfecting SCARF2 into microglial cells significantly increased uptake of fluorescent amyloid-beta with a p value of 2.2 times ten to the minus five, while uptake of inert latex beads did not change, arguing the effect is specific rather than a general boost in cell appetite. Conclusion:The same stretch of chromosome 22 pushes Alzheimer risk in opposite directions depending on how many copies you carry: losing one raises risk, gaining one lowers it. Duplications of the central 22q11.21 region emerge as one of the strongest risk-decreasing genetic factors described so far in terms of effect size, behind only the ultra-rare Icelandic APP variant, and unlike that variant they are found across multiple ancestries. The authors are careful about what this does not mean: the deletions are extremely rare, protection is relative rather than absolute, and they show it directly by pointing to duplication carriers who developed late-onset disease anyway while carrying other risk factors. Power is the central constraint, because each genome carries hundreds of rare coding point variants but typically only one rare coding CNV, and the analysis was restricted to individuals of European ancestry. Music:Enjoy the music based on this article at the end of the episode. Article title:Exome analysis of 22,319 individuals links extremely rare copy-number variants and 22q11.21 dosage to Alzheimer risk First author:Quenez O Journal:The American Journal of Human Genetics DOI:10.1016/j.ajhg.2026.07.013 Reference:Quenez O, Schramm C, Cassinari K, Nicolas A, Groeneveld J, Huguet G, et al. Exome analysis of 22,319 individuals links extremely rare copy-number variants and 22q11.21 dosage to Alzheimer risk. The American Journal of Human Genetics. 2026;113(10):1-19. doi:10.1016/j.ajhg.2026.07.013 Li...

Fuhrer J et al., The American Journal of Human Genetics - Across 34 complex traits and disorders, a MiXeR-based framework partitions SNP heritability over 74 functional annotations and finds that exons carry only a minority of it, and steadily less as a trait becomes more polygenic. Exonic heritability falls from about 22 percent in less-polygenic somatic diseases and biomarkers to about 13 percent in highly polygenic psychiatric and cognitive traits, intergenic heritability rises by the same logic, and intronic heritability stays put. A new annotation contribution score shows the same axis in the annotations themselves: highly polygenic traits load on conservation and variant-effect scores, less-polygenic traits on promoter, transcription and chromatin marks. Key terms: polygenicity, SNP heritability, noncoding variation, functional annotation, complex traits. Study Highlights:The authors extended the MiXeR framework to model SNP effect-size variance across 74 binary functional annotations, applied it to 34 traits spanning psychiatric, neurological, cardiometabolic, anthropometric, hematological and immune phenotypes, and introduced a likelihood-based annotation contribution score that measures how much a single annotation adds to the full model rather than how enriched it is per SNP. Exons cover 2.55 percent of base pairs and account for a mean of 14.52 percent of heritability, with introns and intergenic regions together explaining the remaining 85.49 percent; introns alone typically carry about half. Regressing regional fractions on log polygenicity, the exonic fraction falls 4.38 percentage points and the intergenic fraction rises 4.87 percentage points per ten-fold increase in polygenicity, while the intronic slope is not significant, and the illustrative spread runs from 8.51 percent exonic in schizophrenia to 29.44 percent in sex-hormone-binding globulin. The contribution score peaks for mid-sized annotations covering roughly 10 to 15 percent of SNPs, so compact conservation tracks such as phastCons, GERP, CADD and Eigen dominate in highly polygenic traits while promoter and chromatin tracks such as H3K4me3 and CpG islands dominate in less-polygenic ones. Sensitivity analyses against sLDSC and sLD4M agreed closely, with heritability fractions correlating at r equals 0.996 and polygenicity estimates at Spearman r equals 0.91. Conclusion:The functional location of heritability is not a fixed property of the genome but tracks a trait's polygenicity: less-polygenic somatic traits concentrate heritability in coding and gene-proximal regulatory regions, while highly polygenic psychiatric and cognitive traits distribute it across dispersed distal regulatory elements. Because enrichment per SNP and total contribution can point in opposite directions, the authors argue both must be read together, and they note that coding variants explain a minority of heritability throughout, which argues for sequencing designs that maximize noncoding coverage. The analysis relies on European-ancestry reference panels, uses relatively broad annotations with incomplete chromosome X coverage, and depends on polygenicity estimates from two methods that nonetheless agreed closely. Music:Enjoy the music based on this article at the end of the episode. Article title:Beyond exons: Linking noncoding heritability and polygenicity across complex human traits and disorders First author:Fuhrer J Journal:The American Journal of Human Genetics DOI:10.1016/j.ajhg.2026.08.012 Reference:Fuhrer J, Shadrin AA, Hughes T, Parker N, Hindley G, Frei E, Nguyen D, Smeland OB, Djurovic S, Andreassen OA, Dale AM, Frei O. Beyond exons: Linking noncoding heritability and polygenicity across complex human traits and disorders. The American Journal of Human Genetics. 2026;113(10):1-13. doi:10.1016/j.ajhg.2026.08.012 License:This episode is based...

Corpas M et al., Cell Genomics - A Perspective arguing that autonomous AI agents which discover, configure and chain bioinformatics operations from natural-language instructions have shifted the bottleneck in computational biology from building pipelines to validating their output. The authors define four necessary conditions for a system to count as agentic, propose a perturbation test that separates genuine runtime decision-making from pre-specified branching, survey four existing systems, and set out a three-tier validation framework in which none of the surveyed systems yet reaches clinical grade. Key terms: agentic genomics, AI agents, validation, skill libraries, equity in genomics. Study Highlights:The authors define agentic genomics through four necessary conditions — autonomy, domain constraint via validated skill libraries, iterative refinement, and natural-language mediation — and offer an empirically testable criterion: a system is not agentic if perturbed intermediate outputs fail to change its execution strategy. They distinguish the paradigm from workflow managers like Nextflow and Galaxy, from AutoML, from LLM-assisted scripting, and from general-purpose biomedical copilots. Four systems are surveyed and placed against a proposed three-tier validation framework of research grade, benchmarked and clinical grade; all four currently sit at research grade, and none has published the external multi-site evidence the clinical tier requires. The paper documents a concrete silent failure: in the early weeks of ClawBio, one skill given an empty input file containing no genomic data returned all-normal results including recommended dosages for 51 drugs, a path since closed by community audit. It also reports that a randomized trial of GPT-4-augmented diagnostic reasoning found no significant improvement over conventional resources, 76 percent versus 74 percent with p equal to 0.60, even though the model alone scored well above physicians. Conclusion:The central claim is that agentic genomics expands the capacity to produce analyses without expanding the capacity to judge them, so validation frameworks must be formalized and tiered, equity-aware defaults must be engineered rather than aspired to, and regulatory frameworks must accommodate non-deterministic software. The authors argue the paradigm is already in use and advancing, and that the open question is not whether it will be adopted but whether the field will build the standards to make it trustworthy first. Music:Enjoy the music based on this article at the end of the episode. Article title:Agentic genomics: From pipeline automation to autonomous validation First author:Corpas M Journal:Cell Genomics DOI:10.1016/j.xgen.2026.101305 Reference:Corpas M, Guio H, Fatumo S. Agentic genomics: From pipeline automation to autonomous validation. Cell Genomics. 2026;6(8):101305. doi:10.1016/j.xgen.2026.101305 License:This episode is based on an open-access article published under the Creative Commons Attribution 4.0 International License (CC BY 4.0) – https://creativecommons.org/licenses/by/4.0/ Support:Base by Base is independent and ad-free — no sponsors, no paywall. If an episode was worth your time, chip in and keep the papers audited and the original songs coming:❤️ Support monthly: https://buy.stripe.com/cNifZhclVebvagk2JDgEg01☕ One-time donation: https://donate.stripe.com/7sY4gz71B2sN3RWac5gEg00▶️ Watch with chapters on YouTube: https://www.youtube.com/@basebybase More at basebybase.com On PaperCast Base by Base you'll discover the latest in genomics, functional genomics, structural genomics, and proteomics. Episode link: https://basebybase.com/episodes/agentic-genomics-validation-bottleneck QC:This episode was checked against the original article PDF and publication metadat...

Ali T et al., JCI Insight - Um antirretroviral aprovado para HIV, dado por via oral em microdose, prolongou a sobrevida de camundongos que carregam a proteína priônica humana e foram infectados com príons de doença de Creutzfeldt-Jakob esporádica humana. O efavirenz age ativando a CYP46A1, a enzima cerebral que converte colesterol numa forma capaz de sair do cérebro — e não baixando a proteína priônica, como as abordagens dos episódios anteriores desta série. Termos-chave: efavirenz, CYP46A1, doença de Creutzfeldt-Jakob, metabolismo do colesterol cerebral, reposicionamento de medicamento. ⚠️ Importante: nada neste episódio é motivo para tomar efavirenz.O efavirenz é um antirretroviral de prescrição com efeitos colaterais reais, incluindo distúrbio do sono, sonhos vívidos, tontura e efeitos psiquiátricos. A dose usada neste estudo — cerca de 0,09 mg/kg por dia — é algo entre 300 e 400 vezes menor que a dose prescrita para HIV, e não é algo que alguém consiga aproximar por conta própria. Nenhum ser humano teve benefício demonstrado com efavirenz para doença priônica. Existe um ensaio de Fase 3 registrado como NCT07482085 no ClinicalTrials.gov, que ainda não reportou resultados. Se a doença priônica afeta você ou sua família, converse com um neurologista e pergunte sobre ensaios registrados — não sobre a farmácia.Este é o quarto episódio da nossa série sobre a doença de Creutzfeldt-Jakob, que começou como homenagem ao Lito Sousa. Todos os ensaios citados na série estão registrados publicamente no ClinicalTrials.gov. Destaques do estudo:Os autores inocularam camundongos tg650, que superexpressam a PrP humana, com príons MM1 de CJD esporádica humana e começaram o efavirenz oral em dose baixa aos 30 ou aos 130 dias após a infecção, prolongando a sobrevida em 17 e 23 dias respectivamente. Na fase clínica inicial, os animais tratados apresentaram menos PrPSc, menor teor de colesterol e de gotículas lipídicas no cérebro, e níveis mais altos de CYP46A1 e de 24S-hidroxicolesterol no cérebro e no soro. Superexpressar a CYP46A1 sozinha em células neuronais infectadas já reduziu a PrPSc e elevou o 24S-hidroxicolesterol, ligando o efeito antipriônico à enzima e não a outra propriedade do remédio. A dose usada foi de cerca de 0,09 mg/kg por dia, algo entre 300 e 400 vezes menor que a dose padrão prescrita para HIV. A eficácia no início tardio importa clinicamente, porque o paciente chega depois que os sintomas começaram. Conclusão:O efavirenz oral em dose baixa ativa a CYP46A1, restaura a renovação de colesterol no cérebro, reduz o acúmulo de PrPSc e prolonga a sobrevida num modelo humanizado de CJD esporádica, o que sustenta avaliar melhor esse medicamento reposicionado em doença priônica humana. Música:Ouça a música criada a partir deste artigo no final do episódio. Título do artigo:Treatment with efavirenz extends survival in a Creutzfeldt-Jakob disease model by regulating brain cholesterol metabolism Primeiro autor:Ali T Revista:JCI Insight DOI:10.1172/jci.insight.190296 Referência:Ali T, Cashion J, Hannaoui S, Ahmed-Hassan H, Schatzl H, Gilch S. Treatment with efavirenz extends survival in a Creutzfeldt-Jakob disease model by regulating brain cholesterol metabolism. JCI Insight. 2025;10(14):e190296. doi:10.1172/jci.insight.190296 Licença:Este episódio é baseado em um artigo de acesso aberto publicado sob a Licença Creative Commons Atribuição 4.0 Internacional (CC BY 4.0) – https://creativecommons.org/licenses/by/4.0/ Apoie:O Base by Base é independente e sem anúncios — sem patrocinadores, sem paywall. Se o episódio valeu o seu tempo, contribua e ajude a manter os artigos auditados e as músicas originais:❤️ Apoio mensal: https://buy.stripe.com/cNifZhclVebvagk2JDgEg01☕ Doação única: https://donate.stripe.com/7sY4gz71B2sN3RWac5gEg00 Mais em basebybase.com

Ali T et al., JCI Insight - Repurposed low-dose efavirenz slowed disease progression and extended survival in tg650 mice inoculated with MM1 sCJD prions by activating CYP46A1, raising 24S‑hydroxycholesterol and reducing PrPSc, brain cholesterol and lipid droplets at the early clinical stage. Key terms: efavirenz, CYP46A1, Creutzfeldt-Jakob disease, cholesterol metabolism, prion disease. ⚠️ Important: nothing in this episode is a reason to take efavirenz.Efavirenz is a prescription antiretroviral with real side effects, including sleep disturbance, vivid dreams, dizziness and psychiatric effects. The dose used in this study — about 0.09 mg/kg per day — is roughly 300 to 400 times lower than the dose prescribed for HIV, and is not something anyone can approximate on their own. No human being has yet been shown to benefit from efavirenz for prion disease. A Phase 3 trial is registered as NCT07482085 on ClinicalTrials.gov and has not reported results. If prion disease affects you or your family, talk to a neurologist and ask about registered trials — not about a pharmacy.This episode is the fourth in our series on Creutzfeldt-Jakob disease, which began as a dedication to Lito Sousa. Every trial named in the series is registered publicly on ClinicalTrials.gov. Study Highlights:Oral low-dose efavirenz given to human-PrP–overexpressing tg650 mice starting at 30 or 130 days postinoculation significantly slowed clinical progression and extended survival by 17 and 23 days, respectively. At the early clinical stage EFV-treated mice showed reduced PK-resistant PrPSc, decreased brain cholesterol and lipid droplets, and increased CYP46A1 expression with higher 24S‑hydroxycholesterol in brain and serum. Overexpression of CYP46A1 in prion-infected neuronal cells likewise reduced PrPSc, supporting a causal link between CYP46A1 activation and antiprion effects. Conclusion:Low-dose oral efavirenz activates CYP46A1, restores cholesterol turnover, reduces early PrPSc accumulation and lipid pathology, and extends survival in a humanized sCJD mouse model, supporting EFV as a candidate for further evaluation in human prion disease. Music:Enjoy the music based on this article at the end of the episode. Article title:Treatment with efavirenz extends survival in a Creutzfeldt-Jakob disease model by regulating brain cholesterol metabolism First author:Ali T Journal:JCI Insight DOI:10.1172/jci.insight.190296 Reference:Ali T, Cashion J, Hannaoui S, Ahmed-Hassan H, Schatzl H, Gilch S. Treatment with efavirenz extends survival in a Creutzfeldt-Jakob disease model by regulating brain cholesterol metabolism. JCI Insight. 2025;10(14):e190296. https://doi.org/10.1172/jci.insight.190296. License:This episode is based on an open-access article published under the Creative Commons Attribution 4.0 International License (CC BY 4.0) – https://creativecommons.org/licenses/by/4.0/ Support:Base by Base is independent and ad-free — no sponsors, no paywall. If an episode was worth your time, chip in and keep the papers audited and the original songs coming:❤️ Support monthly: https://buy.stripe.com/cNifZhclVebvagk2JDgEg01☕ One-time donation: https://donate.stripe.com/7sY4gz71B2sN3RWac5gEg00 More at basebybase.com On PaperCast Base by Base you'll discover the latest in genomics, functional genomics, structural genomics, and proteomics. Episode link: https://basebybase.com/episodes/efavirenz-prion-cjd-cholesterol QC:This episode was checked against the original article PDF and publication metadata for the episode release published on 2026-08-31. QC Scope:- article metadata and core scientific claims from the narration- excludes analogies, intro/outro, and music- transcript coverage: Audited the transcript's core biomedical claims about EFV's e...

Minikel EV et al., Nucleic Acids Research - Este estudo testa a redução da proteína priônica (PrP) por oligonucleotídeos antisense (ASOs) em camundongos, variando doses, esquemas de aplicação, linhagens de príon e estágios da doença. O tratamento reduziu o RNA do Prnp, prolongou a sobrevida, atrasou os sintomas e reverteu biomarcadores de lesão neuronal e de gliose em vários cenários. O benefício apareceu mesmo com redução parcial, nas cinco linhagens testadas, e em alguns casos até depois do início dos sintomas. Termos-chave: proteína priônica, oligonucleotídeo antisense, neurodegeneração, biomarcadores, terapias. Destaques do estudo:A redução da PrP mediada por ASO prolongou a sobrevida e atrasou o início da doença tanto no esquema profilático quanto no tardio, em diferentes químicas de ASO. O benefício foi dose-dependente — uma redução de apenas cerca de 21 por cento do RNA já produziu ganho mensurável de sobrevida — e apareceu contra cinco linhagens distintas de príon adaptadas a camundongo, sem sinal de linhagens resistentes ao tratamento. Uma dose única aplicada depois da detecção da patologia reverteu a alta do neurofilamento leve no plasma e reduziu a bioluminescência de GFAP; a supressão crônica iniciada até o começo da neuropatologia alcançou benefício comparável ao de camundongos com apenas uma cópia funcional do gene da PrP. Alguns animais tratados já com sintomas francos tiveram sobrevida prolongada, embora a tolerabilidade de certas químicas de ASO em fase tardia tenha sido limitada. Conclusão:Reduzir a PrP por ASO, via mecanismo dependente de RNase H, é uma estratégia modificadora de doença amplamente eficaz nos modelos de príon em camundongo — atravessando linhagens e estágios — e justifica o desenvolvimento de terapias que baixem a PrP, com esquemas de dose apropriados. Música:Ouça a música criada a partir deste artigo no final do episódio. Título do artigo:Prion protein lowering is a disease-modifying therapy across prion disease stages, strains and endpoints Primeiro autor:Minikel EV Revista:Nucleic Acids Research DOI:10.1093/nar/gkaa616 Referência:Minikel EV, Zhao HT, Le J, O’Moore J, Pitstick R, Graffam S, Carlson GA, Kavanaugh MP, Kriz J, Kim JB, Ma J, Wille H, Aiken J, McKenzie D, Doh-ura K, Beck M, O’Keefe R, Stathopoulos J, Caron T, Schreiber SL, Carroll JB, Kordasiewicz HB, Cabin DE, Vallabh SM. Prion protein lowering is a disease-modifying therapy across prion disease stages, strains and endpoints. Nucleic Acids Research. 2020;48(19):10615–10631. doi:10.1093/nar/gkaa616 Licença:Este episódio é baseado em um artigo de acesso aberto publicado sob a Licença Creative Commons Atribuição 4.0 Internacional (CC BY 4.0) – https://creativecommons.org/licenses/by/4.0/ Apoie:O Base by Base é independente e sem anúncios — sem patrocinadores, sem paywall. Se o episódio valeu o seu tempo, contribua e ajude a manter os artigos auditados e as músicas originais:❤️ Apoio mensal: https://buy.stripe.com/cNifZhclVebvagk2JDgEg01☕ Doação única: https://donate.stripe.com/7sY4gz71B2sN3RWac5gEg00 Mais em basebybase.com No PaperCast Base by Base você acompanha o que há de mais recente em genômica, genômica funcional, genômica estrutural e proteômica. Link do episódio: https://basebybase.com/episodes/prion-protein-lowering-across-strains-pt QC:Este episódio foi conferido contra o PDF original do artigo e os metadados da publicação, para a edição publicada em 2026-08-28. Escopo do QC:- metadados do artigo e as afirmações científicas centrais da narração- exclui analogias, abertura/encerramento e música- cobertura da transcrição: Audited the transcript sections describing mechanism of action (RNase H–mediated PrP reduction), dose-response and minimal knockdown, cross-strain efficacy across five prion strains, treatmen...

Minikel EV et al., Nucleic Acids Research - This study uses antisense oligonucleotides (ASOs) to lower prion protein (PrP) RNA in mice and shows dose-dependent extension of survival, efficacy across multiple prion strains, reversal of molecular biomarkers, and benefit even when treatment is delayed into symptomatic stages. Key terms: prion protein, antisense oligonucleotide, neurodegeneration, biomarkers, survival. Study Highlights:Using ASOs to reduce PrP RNA in intracerebrally inoculated mice produced dose-dependent extension of survival in both prophylactic and delayed dosing paradigms. Less than 25% PrP suppression was sufficient to delay symptoms and extend survival. Treatment was effective across five distinct prion strains without evidence of drug-resistant prions. Biomarkers of neuronal injury (plasma NfL) and astrocytosis (GFAP bioluminescence) were reversed after ASO treatment, and chronic early dosing matched benefits seen in heterozygous PrP knockout animals. Conclusion:ASO-mediated PrP lowering is a robust, disease-modifying approach in mouse models of prion disease across strains and disease stages, supporting advancement of PrP-lowering therapeutics and use of CSF PrP and blood NfL as pharmacodynamic biomarkers. Music:Enjoy the music based on this article at the end of the episode. Article title:Prion protein lowering is a disease-modifying therapy across prion disease stages, strains and endpoints First author:Minikel EV Journal:Nucleic Acids Research DOI:10.1093/nar/gkaa616 Reference:Minikel EV, Zhao HT, Le J, O’Moore J, Pitstick R, Graffam S, Carlson GA, Kavanaugh MP, Kriz J, Kim JB, Ma J, Wille H, Aiken J, McKenzie D, Doh-ura K, Beck M, O’Keefe R, Stathopoulos J, Caron T, Schreiber SL, Carroll JB, Kordasiewicz HB, Cabin DE, Vallabh SM. Prion protein lowering is a disease-modifying therapy across prion disease stages, strains and endpoints. Nucleic Acids Research. 2020;48(19):10615–10631. doi:10.1093/nar/gkaa616 License:This episode is based on an open-access article published under the Creative Commons Attribution 4.0 International License (CC BY 4.0) – https://creativecommons.org/licenses/by/4.0/ Support:Base by Base is independent and ad-free — no sponsors, no paywall. If an episode was worth your time, chip in and keep the papers audited and the original songs coming:❤️ Support monthly: https://buy.stripe.com/cNifZhclVebvagk2JDgEg01☕ One-time donation: https://donate.stripe.com/7sY4gz71B2sN3RWac5gEg00 More at basebybase.com On PaperCast Base by Base you'll discover the latest in genomics, functional genomics, structural genomics, and proteomics. Episode link: https://basebybase.com/episodes/prion-protein-lowering-stages-strains-endpoints QC:This episode was checked against the original article PDF and publication metadata for the episode release published on 2026-08-25. QC Scope:- article metadata and core scientific claims from the narration- excludes analogies, intro/outro, and music- transcript coverage: Audited sections include PrP biology and PrP function; ASO mechanism and RNase H action; dose-response and minimal PrP knockdown; cross-strain efficacy across five mouse prion strains; biomarkers (plasma NfL and GFAP bioluminescence); therapeutic timing (prophylactic, early/delayed, late/symptomatic); resistance and tr- transcript topics: Prion protein biology and PrP function; ASO mechanism and RNase H action; Dose-response and minimal PrP knockdown; Cross-strain efficacy across five mouse prion strains; Biomarkers: plasma neurofilament light (NfL) and GFAP bioluminescence; Behavioral readouts: rotarod and nest-building QC Summary:- factual score: 10/10- metadata score: 10/10- supported core claims: 5- claims flagged for review: 0- metadata check...

Raymond GJ et al., JCI Insight - This episode covers a 2019 study showing that sequence-specific antisense oligonucleotides (ASOs) targeting the prion protein (PrP) mRNA, delivered by bolus intracerebroventricular injection, lower PrP levels in the CNS, slow neuropathology, and markedly extend survival in prion-infected wild-type mice when given prophylactically or even near symptom onset. Key terms: antisense oligonucleotide, prion disease, prion protein, intracerebroventricular, mouse model. Study Highlights:Two PrP-targeting ASOs (active ASO 1 and 2) reduced Prnp mRNA and PrP protein across brain regions and produced robust survival benefits in RML prion–infected wild-type mice, with prophylactic extension of lifespan by 61%–98%. A single bolus dose given at 120 days post-infection (near clinical onset) extended survival by 55% and slowed symptomatic progression. A non‑targeting control ASO showed no efficacy, indicating a sequence-specific, on‑target mechanism mediated by RNase H–dependent RNA lowering. Some tolerability issues were observed with particular ASO candidates at late-stage treatment, but at least one active ASO was both tolerated and effective. Conclusion:Bolus CNS delivery of sequence-specific PrP‑lowering ASOs lowers PrP, delays prion neuropathology, and substantially extends survival in infected mice, supporting further development of PrP‑lowering therapy and use of CSF PrP as a pharmacodynamic biomarker. Music:Enjoy the music based on this article at the end of the episode. Article title:Antisense oligonucleotides extend survival of prion-infected mice First author:Raymond GJ Journal:JCI Insight DOI:10.1172/jci.insight.131175 Reference:Raymond GJ, Zhao HT, Race B, et al. Antisense oligonucleotides extend survival of prion-infected mice. JCI Insight. 2019;4(16):e131175. doi:10.1172/jci.insight.131175. License:This episode is based on an open-access article published under the Creative Commons Attribution 4.0 International License (CC BY 4.0) – https://creativecommons.org/licenses/by/4.0/ Support:Base by Base is independent and ad-free — no sponsors, no paywall. If an episode was worth your time, chip in and keep the papers audited and the original songs coming:❤️ Support monthly: https://buy.stripe.com/cNifZhclVebvagk2JDgEg01☕ One-time donation: https://donate.stripe.com/7sY4gz71B2sN3RWac5gEg00 More at basebybase.com On PaperCast Base by Base you'll discover the latest in genomics, functional genomics, structural genomics, and proteomics. Episode link: https://basebybase.com/episodes/450-prp-lowering-asos-prion-mice QC:This episode was checked against the original article PDF and publication metadata for the episode release published on 2026-08-24. QC Scope:- article metadata and core scientific claims from the narration- excludes analogies, intro/outro, and music- transcript coverage: Audited sections describing ASOs targeting Prnp, PrP reduction, i.c.v. bolus delivery, prophylactic vs late-stage treatment in prion-infected mice, and the role of control ASOs and sequence specificity.- transcript topics: Antisense oligonucleotides targeting Prnp mRNA; PrP reduction and PrP biology; Intracerebroventricular bolus delivery vs continuous infusion; Prophylactic vs late-stage treatment in prion-infected mice; Sequence specificity and non-targeting control ASO; Pharmacodynamic biomarker: CSF PrP measurement QC Summary:- factual score: 10/10- metadata score: 10/10- supported core claims: 6- claims flagged for review: 0- metadata checks passed: 4- metadata issues found: 0 Metadata Audited:- article_doi- article_title- article_journal- license Factual Items Audited:- ASOs targeting Prnp mRNA discussed as a therap...

Gentile JE et al., Nucleic Acids Research - Discovery and preclinical development of divalent siRNA candidates targeting PRNP, identifying 2439-s4 as a potent, durable human PRNP-lowering drug candidate with IND clearance. Key terms: prion disease, PrP lowering, divalent siRNA, 2439-s4, RNAi therapeutics. Study Highlights:Authors screened divalent siRNA libraries and identified mouse-targeting 1682-s4 that lowered brain PrP to ~49% and extended survival in prion-infected mice when dosed pre- or post-symptomatically. They generated human PRNP transgenic mouse lines (Tg25109, Tg26372) and nominated 2439-s4, which reduced whole-hemisphere human PrP to as low as 17% after a single dose. Mechanistic analysis showed that the s4 scaffold’s fixed 3' UU tail and exNA terminal linkages each contributed to superior potency and durability versus other scaffolds. GLP toxicology in rats and dogs found no significant adverse findings and the US FDA cleared an IND to advance 2439-s4 to clinical trials. Conclusion:Divalent siRNA 2439-s4 is a potent, durable PRNP-lowering candidate with favorable preclinical safety and regulatory clearance to proceed to clinical testing. Music:Enjoy the music based on this article at the end of the episode. Article title:Divalent siRNA for prion disease First author:Gentile JE Journal:Nucleic Acids Research DOI:10.1093/nar/gkag287 Reference:Gentile JE, Corridon TL, Serack FE, et al. Divalent siRNA for prion disease. Nucleic Acids Research. 2026;54:gkag287. doi:10.1093/nar/gkag287 License:This episode is based on an open-access article published under the Creative Commons Attribution 4.0 International License (CC BY 4.0) – https://creativecommons.org/licenses/by/4.0/ Support:Base by Base is independent and ad-free — no sponsors, no paywall. If an episode was worth your time, chip in and keep the papers audited and the original songs coming:❤️ Support monthly: https://buy.stripe.com/cNifZhclVebvagk2JDgEg01☕ One-time donation: https://donate.stripe.com/7sY4gz71B2sN3RWac5gEg00 More at basebybase.com On PaperCast Base by Base you'll discover the latest in genomics, functional genomics, structural genomics, and proteomics. Episode link: https://basebybase.com/episodes/divalent-sirna-prion-disease QC:This episode was checked against the original article PDF and publication metadata for the episode release published on 2026-08-24. QC Scope:- article metadata and core scientific claims from the narration- excludes analogies, intro/outro, and music- transcript coverage: Audited transcript sections covering PRNP biology, divalent siRNA mechanism (s4 scaffold with UU tail and exNA), lead sequences (1682-s4 and 2439-s4), human PRNP transgenic mice models, intrathecal delivery, RT-qPCR and ELISA readouts, PK/PD durability, prion-infected survival data, and IND status.- transcript topics: Prion biology and PRNP as therapeutic target; Divalent siRNA mechanism and s4 scaffold features (UU tail, exNA); Lead sequences 1682-s4 and 2439-s4 and in vivo screening; Transgenic human PRNP mice Tg25109 and Tg26372; Intrathecal delivery and brain distribution; Analytical readouts: RT-qPCR and PrP ELISA QC Summary:- factual score: 10/10- metadata score: 10/10- supported core claims: 6- claims flagged for review: 0- metadata checks passed: 4- metadata issues found: 0 Metadata Audited:- article_doi- article_title- article_journal- license Factual Items Audited:- DOI canonical form 10.1093/nar/gkag287- Article title: Divalent siRNA for prion disease- Journal: Nucleic Acids Research- License: Creative Commons Attribution 4.0 International License (CC BY 4.0)- Lead sequences identified: 1682-s4 (mouse Prnp) and 2439-...

Raymond GJ et al., JCI Insight - This study tests antisense oligonucleotides (ASOs) targeting Prnp in wild‑type mice infected with RML prions and shows that sequence‑specific PrP lowering by bolus i.c.v. ASO dosing delays disease and extends survival, even when given near clinical onset. Key terms: prion disease, antisense oligonucleotide, PrP lowering, mouse model, intracerebroventricular delivery. Study Highlights:Two sequence‑specific ASOs targeting mouse Prnp lowered Prnp mRNA and PrP protein in brain and delayed neuropathology compared with a non‑targeting control. Prophylactic bolus i.c.v. dosing given every 2–3 months extended survival by 61%–98%. A single ASO dose at 120 days post‑infection, near expected symptom onset, extended survival by 55% and slowed symptomatic progression. Control ASO showed no benefit, supporting RNA‑lowering as the mechanism of action. Conclusion:Bolus intracerebroventricular delivery of PrP‑targeting ASOs lowers PrP via RNase H–mediated mRNA degradation, slows accumulation of misfolded PrP, and substantially extends survival in prion‑infected mice, including when treatment is initiated near clinical onset. Music:Enjoy the music based on this article at the end of the episode. Article title:Antisense oligonucleotides extend survival of prion‑infected mice First author:Raymond GJ Journal:JCI Insight DOI:10.1172/jci.insight.131175 Reference:Raymond GJ, Tran Zhao H, Race B, Raymond LD, Williams K, Swayze EE, Graffam S, Le J, Caron T, Stathopoulos J, O’Keefe R, Lubke LDL, Reidenbach AG, Kraus A, Schreiber SL, Mazur C, Cabin DE, Carroll JB, Minikel EV, Kordasiewicz H, Caughey B, Vallabh SM. Antisense oligonucleotides extend survival of prion‑infected mice. JCI Insight. 2019;4(16):e131175. https://doi.org/10.1172/jci.insight.131175. License:This episode is based on an open-access article published under the Creative Commons Attribution 4.0 International License (CC BY 4.0) – https://creativecommons.org/licenses/by/4.0/ Support:Base by Base is independent and ad-free — no sponsors, no paywall. If an episode was worth your time, chip in and keep the papers audited and the original songs coming:❤️ Support monthly: https://buy.stripe.com/cNifZhclVebvagk2JDgEg01☕ One-time donation: https://donate.stripe.com/7sY4gz71B2sN3RWac5gEg00 More at basebybase.com On PaperCast Base by Base you'll discover the latest in genomics, functional genomics, structural genomics, and proteomics. Episode link: https://basebybase.com/episodes/prp-lowering-asos-prolong-survival-ep448 QC:This episode was checked against the original article PDF and publication metadata for the episode release published on 2026-08-23. QC Scope:- article metadata and core scientific claims from the narration- excludes analogies, intro/outro, and music- transcript coverage: Audited the transcript sections describing PrP biology, ASO mechanism (RNA lowering vs aptameric), delivery strategy, prophylactic and late-stage efficacy, control experiments, neuropathology, and translational implications.- transcript topics: Prion biology and PrP involvement; ASO mechanism: RNA lowering vs aptameric effects; Delivery methods: bolus i.c.v. vs osmotic pumps; Prophylactic ASO efficacy in mice (onset delay, survival extension); scrambled control ASO vs active ASOs; Late-stage (120 dpi) ASO efficacy and ASO2 toxicity QC Summary:- factual score: 10/10- metadata score: 10/10- supported core claims: 5- claims flagged for review: 0- metadata checks passed: 4- metadata issues found: 0 Metadata Audited:- article_doi- article_title- article_journal- license Factual Items Audited:- ASOs lowered Prnp mRNA and reduced PrP protein in brain regions- Prophylactic ASO... Chapters (00:00:00) - The genetic silencing approach to Creutzfeldt-Jak(00:02:27) - What is Prion Disease?(00:06:16) - How to Turn off prion disease's spread(00:11:54) - AsO 1, the scrambled ASO(00:12:47) - ASO2 delays the RML prion progression by nearly three(00:17:14) - The neuroscience of prion disease(00:21:11) - Thanks for listening to Prion Disease Podcasts(00:22:35) - Silence the Spark

Gentile JE et al., Nucleic Acids Research - This study develops and tests divalent siRNA molecules that lower prion protein (PrP) in the brain, identifies a potent human-targeting candidate (2439-s4), demonstrates survival benefit in prion-infected mice with a mouse-targeting tool compound, and reports IND-enabling toxicology supporting clinical testing. Key terms: prion disease, PrP lowering, divalent siRNA, 2439-s4, transgenic mouse. Study Highlights:The authors identify a mouse Prnp-targeting divalent siRNA (1682-s4) that lowers brain PrP to ~49% residual and extends survival in RML prion–infected mice (2.7-fold when dosed presymptomatically, 64% increase after a single symptomatic dose). They generate two transgenic mouse lines expressing full human PRNP (Tg25109, Tg26372) and use them to discover human-targeting siRNA 2439, optimized as 2439-s4, which lowers whole-hemisphere human PrP to 17% residual at 348 μg and to 49% at 52 μg. Chemical features—an exNA terminal linkage and a fixed 3' UU tail—each contribute substantially to potency, and a single dose shows durability out to months while 1–2% of CSF dose is retained in brain. GLP toxicology in rats and dogs identified no major liabilities and the FDA cleared an IND to advance 2439-s4 to human trials. Conclusion:Divalent siRNA can achieve deep, durable PrP lowering in the CNS, confer disease-modifying benefit in a mouse prion model, and yield a clinical candidate (2439-s4) with supportive nonclinical toxicology and regulatory clearance for a first-in-human study. Music:Enjoy the music based on this article at the end of the episode. Article title:Divalent siRNA for prion disease First author:Gentile JE Journal:Nucleic Acids Research DOI:10.1093/nar/gkag287 Reference:Gentile JE, Corridon TL, Serack FE, Echeverria D, Kennedy ZC, et al. Divalent siRNA for prion disease. Nucleic Acids Research. 2026;54:gkag287. doi:10.1093/nar/gkag287 License:This episode is based on an open-access article published under the Creative Commons Attribution 4.0 International License (CC BY 4.0) – https://creativecommons.org/licenses/by/4.0/ Support:Base by Base is independent and ad-free — no sponsors, no paywall. If an episode was worth your time, chip in and keep the papers audited and the original songs coming:❤️ Support monthly: https://buy.stripe.com/cNifZhclVebvagk2JDgEg01☕ One-time donation: https://donate.stripe.com/7sY4gz71B2sN3RWac5gEg00 More at basebybase.com On PaperCast Base by Base you'll discover the latest in genomics, functional genomics, structural genomics, and proteomics. Episode link: https://basebybase.com/episodes/divalent-sirna-prion-disease QC:This episode was checked against the original article PDF and publication metadata for the episode release published on 2026-08-23. QC Scope:- article metadata and core scientific claims from the narration- excludes analogies, intro/outro, and music- transcript coverage: Audited sections covering: divalent siRNA mechanism and CNS delivery; mouse Prnp knockdown and survival data for 1682-s4; human PRNP targeting with 2439-s4 in transgenic mice; scaffold optimization (exNA, fixed tail, PS); PK/PD and IND-enabling GLP tox; and FDA IND clearance.- transcript topics: Divalent siRNA mechanism and CNS delivery; Mouse Prnp knockdown and survival in prion model with 1682-s4; Human PRNP transgenic mouse models Tg25109/Tg26372 and lead candidate 2439-s4; Chemical scaffold optimization (PS reductions, exNA, fixed UU tail); IND-enabling GLP toxicology and FDA IND clearance; PK/PD metrics (IC50 ~1.2 μg/g; tissue retention 1–2% dose) QC Summary:- factual score: 10/10- metadata score: 10/10- supported core claims: 6- claims flagged for review: 0- metadata checks passed: 4- metadata is... Chapters (00:00:02) - Basses by Bass(00:00:28) - The science of Creutzfeldt Jakob Disease(00:05:56) - Turning off the prion protein(00:13:13) - Quantum therapy for prion disease(00:20:18) - CJD Foundation on Lito Sousa(00:21:32) - Cut the Thread

Lin Y‑E et al., PNAS - Knock‑in SncaG51D/G51D mice show selective loss of primary cilia in specific striatal interneurons, astrocytes, piriform cortex PV cells and olfactory basal stem cells, with concomitant reduction in Hedgehog‑dependent neurotrophic signaling linked to Parkinson’s disease vulnerabilities. Key terms: alpha-synuclein, primary cilia, neurotrophic signaling, Parkinson’s disease, G51D mouse. Study Highlights:Using SncaG51D/G51D knock‑in mice, the authors document selective loss of primary cilia in striatal cholinergic and parvalbumin interneurons and in ALDH1L1+ astrocytes while medium spiny neuron ciliation is preserved. Cilia loss associates with reduced Ptch1 expression and decreased production of neurotrophic factors (GDNF, NRTN, BDNF), indicating impaired Hedgehog signaling. PV neurons in the piriform cortex and horizontal basal cells in the olfactory epithelium also lose cilia and show reduced NRTN, whereas multiciliated olfactory sensory neurons remain intact. Higher phospho-Ser129 α‑synuclein correlates with reduced ciliation within ChAT neurons but does not predict vulnerability across all cell types. Conclusion:G51D α‑synuclein drives cell type–selective loss of primary cilia and impaired cilia‑dependent neurotrophic signaling, highlighting disrupted ciliary signaling as a convergent pathogenic pathway in Parkinson’s disease. Music:Enjoy the music based on this article at the end of the episode. Article title:Selective loss of primary cilia and neurotrophic signaling in G51D α- synuclein mice highlights a common pathway to Parkinson’s disease First author:Lin Y‑E Journal:PNAS DOI:10.1073/pnas.2619797123 Reference:Lin Y‑E, Chiang C‑Y, et al., Selective loss of primary cilia and neurotrophic signaling in G51D α‑synuclein mice highlights a common pathway to Parkinson’s disease. Proc Natl Acad Sci U S A. 2026;123:e2619797123. doi:10.1073/pnas.2619797123 License:This episode is based on an open-access article published under the Creative Commons Attribution 4.0 International License (CC BY 4.0) – https://creativecommons.org/licenses/by/4.0/ Support:Base by Base is independent and ad-free — no sponsors, no paywall. If an episode was worth your time, chip in and keep the papers audited and the original songs coming:❤️ Support monthly: https://buy.stripe.com/cNifZhclVebvagk2JDgEg01☕ One-time donation: https://donate.stripe.com/7sY4gz71B2sN3RWac5gEg00 More at basebybase.com On PaperCast Base by Base you'll discover the latest in genomics, functional genomics, structural genomics, and proteomics. Episode link: https://basebybase.com/episodes/cilia-synuclein-g51d-parkinsons-pathway QC:This episode was checked against the original article PDF and publication metadata for the episode release published on 2026-08-23. QC Scope:- article metadata and core scientific claims from the narration- excludes analogies, intro/outro, and music- transcript coverage: Substantive auditing of the transcript’s reporting of the G51D α-synuclein mouse model findings, including: cell-type–specific cilia loss, Hedgehog signaling impairment, neurotrophic factor downregulation, olfactory system involvement (piriform cortex and olfactory epithelium), pS129-α-synuclein correlations, and thera- transcript topics: G51D α-synuclein knock-in mouse model; Cell-type specific loss of primary cilia in striatum (ChAT and PV interneurons) and astrocytes; Hedgehog signaling impairment and Ptch1 transcription; Downregulation of neurotrophic factors: GDNF, NRTN, BDNF; Olfactory system involvement: piriform cortex PV neurons and Neurturin downregulation; Olfactory epithelium ciliopathy: horizontal basal cells vs olfactory sensory neurons QC Summary:- factual score: 10/10- metadata score: 10/10- supported core... Chapters (00:00:20) - What is the silent process of Parkinson's disease?(00:03:16) - Parkinson's disease: The genetic mystery(00:07:35) - Parkinson's in a mouse(00:13:05) - Parkinson's neurodegeneration causes loss of smell(00:16:43) - Parkinson's disease's toxic alpha synuclein paradox(00:24:03) - Parkinson's disease: The cellular blackout(00:25:47) - Bring Back the Signal, Let it Come Alive

Khosh Abady K et al., PNAS - Spectroscopic comparison of thymine and uracil under 265 nm UVC shows thymine is more photoreactive and absorbs more primordial UVC, yet channels damage into reversible CPDs rather than irreversible (6-4) lesions, supporting an evolutionary 'molecular sunscreen' role. Key terms: UV photodamage, thymine, uracil, cyclobutane pyrimidine dimer, origin of life. Study Highlights:The authors used absorption, fluorescence, and Raman spectroscopy with 265 nm UVC irradiation to compare thymine and uracil photochemistry under controlled conditions. Thymine shows a faster overall absorbance decay (k = 0.174 min−1) than uracil (k = 0.064 min−1) and ~9% broader, redshifted absorption that increases overlap with primordial UVC. Thymine exhibits ~4.5× stronger intrinsic fluorescence and produces higher-amplitude photoproduct fluorescence while accumulating irreversible (6-4) photoproducts more slowly (k = 1.56 min−1) than uracil (k = 2.04 min−1). Raman markers distinguish CPD and (6-4) pathways and indicate thymine preferentially funnels damage into reversible CPD formation amenable to nonenzymatic self-repair. Conclusion:Thymine, though more photoreactive and exposed to higher primordial UVC flux, appears evolutionarily selected to localize UV damage into reversible lesions (CPDs) and provide molecular 'sunscreen' protection while enabling nonenzymatic self-repair, complementing later biochemical fidelity mechanisms. Music:Enjoy the music based on this article at the end of the episode. Article title:UV photodamage pathways and the evolutionary selection of thymine over uracil in early genetic systems First author:Khosh Abady K Journal:PNAS DOI:10.1073/pnas.2615278123 Reference:Khosh Abady K, Karpourazar N, Rentzepis PM. UV photodamage pathways and the evolutionary selection of thymine over uracil in early genetic systems. PNAS. 2026. doi:10.1073/pnas.2615278123 License:This episode is based on an open-access article published under the Creative Commons Attribution 4.0 International License (CC BY 4.0) – https://creativecommons.org/licenses/by/4.0/ Support:Base by Base is independent and ad-free — no sponsors, no paywall. If an episode was worth your time, chip in and keep the papers audited and the original songs coming:❤️ Support monthly: https://buy.stripe.com/cNifZhclVebvagk2JDgEg01☕ One-time donation: https://donate.stripe.com/7sY4gz71B2sN3RWac5gEg00 More at basebybase.com On PaperCast Base by Base you'll discover the latest in genomics, functional genomics, structural genomics, and proteomics. Episode link: https://basebybase.com/episodes/uv-photodamage-thymine-vs-uracil QC:This episode was checked against the original article PDF and publication metadata for the episode release published on 2026-08-22. QC Scope:- article metadata and core scientific claims from the narration- excludes analogies, intro/outro, and music- transcript coverage: Audited transcript sections: background on RNA world and thymine vs uracil, experimental design with frozen-state bases, absorption/fluorescence/Raman results, and interpretation including CPD vs (6-4) pathways, molecular sunscreen hypothesis, evolutionary implications, and applications to pathogen detection/UV disinfe- transcript topics: RNA world background and thymine vs uracil photochemistry; Experimental design: frozen-ice state, 130 µM concentration, 265.3 nm narrowband UVC LED, -15 °C; Absorption spectra and photodegradation kinetics (k values for thymine and uracil); Fluorescence kinetics and photoproduct formation; Raman signatures for CPD and (6-4) photoproducts; Methyl group effects on base stacking and CPD bias QC Summary:- factual score: 10/10- metadata score: 10/10- supported core claims: 5- claims flagged f... Chapters (00:00:00) - Base by Base(00:00:29) - Why DNA vs RNA was the ultimate solar hard drive(00:06:02) - The UV glow of early life(00:10:51) - Thiine protects the DNA from UV damage(00:16:00) - Molecular sunscreen: The UV protection(00:21:19) - How DNA protected its ancestors from the sun(00:24:26) - Make It Bend, Don't Let It Break

Pilgrim C et al., PNAS - A minimal analytical model shows that whether animal groups adopt distributed low-level vigilance (many-eyes) or concentrated high-vigilance roles (sentinels) depends on how individual vigilance costs scale with effort. The same dichotomy appears in selfish and cooperative groups and explains switching, edge effects, and turn-taking. Key terms: collective vigilance, many-eyes, sentinel behavior, vigilance costs, behavioral ecology. Study Highlights:The authors derive a minimal model where collective vigilance benefit is a function of summed individual vigilance and costs depend on individual effort. When vigilance costs are convex (steepening) many-eyes strategies with equal low vigilance across individuals are optimal; when costs are concave (flattening) sentinel strategies with vigilance concentrated in one or a few individuals are optimal. This outcome holds in both selfish (game-dynamic) and cooperative (group-optimal) contexts and is supported by simulations. Extensions reproduce behavioral switching with S-shaped costs, edge effects from heterogeneous costs, and turn-taking when energy state dynamics are included. Conclusion:The curvature of individual vigilance costs determines whether groups distribute vigilance across many members or concentrate it in sentinels; habitat structure that creates flattening costs (vantage points) favors sentinels, while uniform habitats with steepening costs favor many-eyes. Music:Enjoy the music based on this article at the end of the episode. Article title:Many-eyes and sentinels in selfish and cooperative groups First author:Pilgrim C Journal:PNAS DOI:10.1073/pnas.2536017123 Reference:Pilgrim C, Bate AM, Sigalou A, Aellen M, Morford J, Warren E, Krupenye C, Biro D, Mann RP. Many-eyes and sentinels in selfish and cooperative groups. PNAS. 2026;123(33):e2536017123. doi:10.1073/pnas.2536017123 License:This episode is based on an open-access article published under the Creative Commons Attribution 4.0 International License (CC BY 4.0) – https://creativecommons.org/licenses/by/4.0/ Support:Base by Base is independent and ad-free — no sponsors, no paywall. If an episode was worth your time, chip in and keep the papers audited and the original songs coming:❤️ Support monthly: https://buy.stripe.com/cNifZhclVebvagk2JDgEg01☕ One-time donation: https://donate.stripe.com/7sY4gz71B2sN3RWac5gEg00 More at basebybase.com On PaperCast Base by Base you'll discover the latest in genomics, functional genomics, structural genomics, and proteomics. Episode link: https://basebybase.com/episodes/many-eyes-or-sentinels-cost-curvature-vigilance QC:This episode was checked against the original article PDF and publication metadata for the episode release published on 2026-08-19. QC Scope:- article metadata and core scientific claims from the narration- excludes analogies, intro/outro, and music- transcript coverage: Audited the transcript sections describing the minimal model fi = b(S) − c(vi); S = ∑vi; cost-curvature (convex vs concave); environmental structure; selfish vs cooperative results; behavioral switching (sigmoidal costs); edge effects; turn-taking; energy-state dynamics; and discussed limitations.- transcript topics: Model of collective vigilance (fi = b(S) − c(vi)); Cost curvature and environmental structure (convex vs concave); Selfish vs cooperative group outcomes; Behavioral switching with sigmoidal costs; Edge effects and spatial positioning; Energy-state dynamics and turn-taking QC Summary:- factual score: 10/10- metadata score: 10/10- supported core claims: 6- claims flagged for review: 0- metadata checks passed: 4- metadata issues found: 0 Metadata Audited:- article_doi- article_title

Feng P et al., PNAS - This paper describes a bipartite antisense oligonucleotide (5D‑ASO) design that appends a short 5′ splice site decoy tail to improve exon skipping, demonstrating robust efficacy for DMD exon 51 in cells, mice, and cynomolgus monkeys with a favorable safety profile. Key terms: antisense oligonucleotide, exon skipping, Duchenne muscular dystrophy, U1 snRNA decoy, dystrophin restoration. Study Highlights:The authors developed a bipartite ASO approach (5D‑ASO) that appends a short 5′ splice site–complementary tail to enhance exon skipping. An optimal 7–8 nt decoy appended to exon 51 ASOs markedly increased exon skipping in human cells and in multiple genetically modified mouse models, restoring dystrophin and improving muscle function. The lead MOE/PS 5D‑ASO showed durable tissue retention, dose‑dependent efficacy, and an overall favorable safety profile in mice and cynomolgus monkeys. The method was operative across multiple genes and exon targets, indicating broad applicability. Conclusion:Appending a short 5′ splice site decoy to exon‑targeting ASOs substantially increases exon‑skipping potency and therapeutic benefit in preclinical DMD models, supporting further clinical development of 5D‑ASO designs. Music:Enjoy the music based on this article at the end of the episode. Article title:An antisense method for efficient exon skipping and its application to Duchenne muscular dystrophy First author:Feng P Journal:PNAS DOI:10.1073/pnas.2606494123 Reference:Feng P., Gao P., Meng S., Yuan Y., Krainer A.R., Hua Y. An antisense method for efficient exon skipping and its application to Duchenne muscular dystrophy. PNAS. 2026;123(33):e2606494123. doi:10.1073/pnas.2606494123 License:This episode is based on an open-access article published under the Creative Commons Attribution 4.0 International License (CC BY 4.0) – https://creativecommons.org/licenses/by/4.0/ Support:Base by Base is independent and ad-free — no sponsors, no paywall. If an episode was worth your time, chip in and keep the papers audited and the original songs coming:❤️ Support monthly: https://buy.stripe.com/cNifZhclVebvagk2JDgEg01☕ One-time donation: https://donate.stripe.com/7sY4gz71B2sN3RWac5gEg00 More at basebybase.com On PaperCast Base by Base you'll discover the latest in genomics, functional genomics, structural genomics, and proteomics. Episode link: https://basebybase.com/episodes/base-by-base-443-5d-aso-dmd QC:This episode was checked against the original article PDF and publication metadata for the episode release published on 2026-08-18. QC Scope:- article metadata and core scientific claims from the narration- excludes analogies, intro/outro, and music- transcript coverage: Audited the core narrative: Duchenne muscular dystrophy background; 5D-ASO design and 5′ splice site decoy tail mechanism; U1 snRNP decoy action; in vitro exon 51 skipping in RD cells; in vivo huEx51/huΔ52 mice data including dystrophin restoration; cynomolgus monkey efficacy/safety; off-target considerations; delivery- transcript topics: DMD background and dystrophin function; 5D-ASO design and 5′ splice site decoy tail mechanism; U1 snRNP decoy mechanism and splicing repression; In vitro exon skipping in RD cells (Etep-L8c and MOE-Etep); In vivo exon 51 skipping in huEx51/huΔ52 mice and dystrophin restoration; Cynomolgus monkey exon 51 skipping and safety QC Summary:- factual score: 10/10- metadata score: 10/10- supported core claims: 6- claims flagged for review: 0- metadata checks passed: 4- metadata issues found: 0 Metadata Audited:- article_doi- article_title- article_journal- license Factual Items Audited:- 5D-ASO tail acts as a decoy to misdirect U1 snRNP...

Rolseth AB et al., Proceedings of the National Academy of Sciences (PNAS) - This study links reduced Ca2+ entry through mutant TMC1 mechanotransducer channels to decreased PMCA2 pump density in outer hair cell stereocilia. PMCA2 turnover is rapid in the early postnatal period and is regulated by stereociliary Ca2+ via insertion from an apical vesicular pool; Neuroplastin (NPTN) later stabilizes the pump complex. Persistent pump reduction at hearing onset may contribute to hair cell mitochondrial dysfunction and death in Tmc1 mutants. Key terms: TMC1, PMCA2, hair cells, Ca2+ regulation, neuroplastin. Study Highlights:Tmc1 point mutations that reduce MET channel Ca2+ permeability show markedly decreased PMCA2 immunolabeling in outer hair cell bundles. PMCA2 density scaled with calculated Ca2+ entry, and experimental lowering of extracellular Ca2+ or pharmacological block of endocytosis or PtdIns(4,5)P2 synthesis reduced PMCA2 during the first postnatal week. PMCA2 is supplied from an apical vesicular pool, turns over rapidly before P11, and NPTN expression lags PMCA2 by ~2 days and less Ca2+ sensitivity, consistent with a stabilizing accessory role. The lower PMCA2 density persists at hearing onset and may contribute to mitochondrial dysfunction and subsequent hair cell death. Conclusion:Reduced stereociliary Ca2+ influx through mutant TMC1 channels decreases Ca2+-regulated insertion and rapid turnover of PMCA2 from an apical vesicular pool during early postnatal development. Because PMCA2 becomes less plastic after ~P11 and NPTN-mediated stabilization follows PMCA2 expression, early pump loss is maintained into hearing onset and may exacerbate intracellular Ca2+ dysregulation, mitochondrial impairment, and hair cell apoptosis in Tmc1 mutants. Music:Enjoy the music based on this article at the end of the episode. Article title:Ca2+ regulation of PMCA2 calcium pump expression in hair cells of Tmc1 deafness mutants First author:Rolseth AB Journal:Proceedings of the National Academy of Sciences (PNAS) DOI:10.1073/pnas.2607733123 Reference:Rolseth AB, Beurg M, Konrad DE, Augusta BK, Fettiplace R. Ca2+ regulation of PMCA2 calcium pump expression in hair cells of Tmc1 deafness mutants. Proc Natl Acad Sci U.S.A. 2026;123:e2607733123. doi:10.1073/pnas.2607733123. License:This episode is based on an open-access article published under the Creative Commons Attribution 4.0 International License (CC BY 4.0) – https://creativecommons.org/licenses/by/4.0/ Support:Base by Base is independent and ad-free — no sponsors, no paywall. If an episode was worth your time, chip in and keep the papers audited and the original songs coming:❤️ Support monthly: https://buy.stripe.com/cNifZhclVebvagk2JDgEg01☕ One-time donation: https://donate.stripe.com/7sY4gz71B2sN3RWac5gEg00 More at basebybase.com On PaperCast Base by Base you'll discover the latest in genomics, functional genomics, structural genomics, and proteomics. Episode link: https://basebybase.com/episodes/ca2-regulation-pmca2-tmc1 QC:This episode was checked against the original article PDF and publication metadata for the episode release published on 2026-08-17. QC Scope:- article metadata and core scientific claims from the narration- excludes analogies, intro/outro, and music- transcript coverage: Audited the core scientific narrative in the transcript: MET Ca2+ permeability reductions in Tmc1 mutants, Ca2+-dependent PMCA2 regulation and vesicle trafficking, dynamic turnover and endocytosis, NPTN's stabilizing role, pharmacological perturbations (Pitstop2, PAO, GSK-1), endolymphatic potential effects at hearing- transcript topics: MET channel Ca2+ permeability in Tmc1 mutants; PMCA2 density regulation and Ca2+ entry relationship; Ca2+-dependent PMCA2 turnover and vesicle tra...

Tang X et al., PNAS - The authors apply an evolutionary sequence-covariation model to the Cav1.3 (CACNA1D) α1-subunit, map predicted pathogenicity onto structural models, and validate five predicted sites by patch-clamp electrophysiology and structural analysis. Predictions recapitulate known functional regions, reveal previously unrecognized clusters, and the tested variants produce diverse functional outcomes from nonconducting channels to gain- and loss-of-function gating changes. Key terms: Cav1.3, evolutionary modeling, CACNA1D, voltage-gated calcium channel, variant pathogenicity. Study Highlights:An evolutionary epistasis model predicted context-dependent conserved residues across Cav1.3 and recapitulated known functional sites. Mapping scores onto structural models highlighted novel clusters outside classical pore and voltage-sensor regions. Electrophysiological testing of five predicted variants confirmed diverse functional effects, including nonconducting (N745A), left-shifted activation (S635I, A376V, R1401A), and right-shifted or slowed gating (F1362A; Q1156E increased inactivation). The combined evolutionary, structural, and biophysical approach provides a scalable framework to prioritize and interpret CACNA1D variants. Conclusion:Evolutionary sequence-covariation combined with structural modeling and electrophysiology identifies novel functionally critical residues across Cav1.3 and enables rapid prioritization of pathogenic CACNA1D variants; the approach is generalizable to other ion channels but requires experimental follow-up to define gain- versus loss-of-function. Music:Enjoy the music based on this article at the end of the episode. Article title:Identification of novel functional sites in the Cav1.3 calcium channel α1-subunit using evolutionary modeling First author:Tang X Journal:PNAS DOI:10.1073/pnas.2602636123 Reference:Tang X, Hermenean HC, Yakimchyka A, Tuluc P, Ortner NJ, Liedl KR. Identification of novel functional sites in the Cav1.3 calcium channel α1-subunit using evolutionary modeling. PNAS. 2026;123(32):e2602636123. doi:10.1073/pnas.2602636123 License:This episode is based on an open-access article published under the Creative Commons Attribution 4.0 International License (CC BY 4.0) – https://creativecommons.org/licenses/by/4.0/ Support:Base by Base is independent and ad-free — no sponsors, no paywall. If an episode was worth your time, chip in and keep the papers audited and the original songs coming:❤️ Support monthly: https://buy.stripe.com/cNifZhclVebvagk2JDgEg01☕ One-time donation: https://donate.stripe.com/7sY4gz71B2sN3RWac5gEg00 More at basebybase.com On PaperCast Base by Base you'll discover the latest in genomics, functional genomics, structural genomics, and proteomics. Episode link: https://basebybase.com/episodes/evolutionary-modeling-cav1-3-functional-sites QC:This episode was checked against the original article PDF and publication metadata for the episode release published on 2026-08-14. QC Scope:- article metadata and core scientific claims from the narration- excludes analogies, intro/outro, and music- transcript coverage: Audited the core scientific sections: evolutionary modeling predictions, structure mapping onto Cav1.3 models, electrophysiology validation in tsA-201 cells, and the functional effects of Cav1.3 variants (N745A, S635I, A376V, F1362A, R1401A, Q1156E); also reviewed limitations and clinical interpretation.- transcript topics: Evolutionary sequence covariation and context-dependent conservation in Cav1.3; Mapping pathogenicity scores onto Cav1.3 cryo-EM structures; Electrophysiological validation of Cav1.3 variants in tsA-201 cells; Functional consequences of specific Cav1.3 variants (N745A, S635I, A376V, F1362A, R1401A, Q1156E); Limitations...

Lamkina EN et al., PNAS - This episode reviews a PNAS brief report showing that DENV-4 infection induces marked DNA damage in infected cells while broadly suppressing transcription of DNA repair pathways, with selective upregulation of a mutagenic translesion polymerase and suppressed ATR expression. The findings raise concerns about long-term molecular "scars" after dengue infection that could influence cancer and postdengue syndromes. Key terms: Dengue, DENV-4, DNA damage, DNA repair, Genome instability. Study Highlights:Using Vero E6 and HUH-7 cells infected at MOI 0.1 and followed up to 5 days, the authors detected a large increase in γH2AX signaling indicating DNA damage. A 96-gene qPCR panel showed widespread suppression of DNA repair and DDR transcripts across multiple pathways while mismatch repair proteins remained stable. ATR protein expression was reduced and the mutagenic polymerase POLι was upregulated, telomere length and TRF2 were unchanged, and LC3 I/II levels decreased. The authors propose these changes create durable molecular vulnerabilities that warrant patient-based validation. Conclusion:DENV-4 causes significant host DNA damage while repressing many DNA repair transcripts, a combination that may leave lasting molecular scars and elevate long-term disease risk, but confirmation in patient samples is needed. Music:Enjoy the music based on this article at the end of the episode. Article title:DENV-4 infection suppresses transcription of DNA repair genes First author:Lamkina EN Journal:PNAS DOI:10.1073/pnas.2536909123 Reference:Lamkina EN, Reich J, Victora JA, et al. DENV-4 infection suppresses transcription of DNA repair genes. PNAS. 2026;123(32):e2536909123. doi:10.1073/pnas.2536909123 License:This episode is based on an open-access article published under the Creative Commons Attribution 4.0 International License (CC BY 4.0) – https://creativecommons.org/licenses/by/4.0/ Support:Base by Base is independent and ad-free — no sponsors, no paywall. If an episode was worth your time, chip in and keep the papers audited and the original songs coming:❤️ Support monthly: https://buy.stripe.com/cNifZhclVebvagk2JDgEg01☕ One-time donation: https://donate.stripe.com/7sY4gz71B2sN3RWac5gEg00 More at basebybase.com On PaperCast Base by Base you'll discover the latest in genomics, functional genomics, structural genomics, and proteomics. Episode link: https://basebybase.com/episodes/base-by-base-denv4-dna-repair QC:This episode was checked against the original article PDF and publication metadata for the episode release published on 2026-08-12. QC Scope:- article metadata and core scientific claims from the narration- excludes analogies, intro/outro, and music- transcript coverage: Audited the main scientific narrative: DENV-4 infection at MOI 0.1 in Vero E6 and HUH-7 cells; γH2AX DNA damage; broad suppression of DDR/DNA repair transcription with selective maintenance of MMR; ATR suppression; telomere length/TRF2 status; autophagy marker LC3 I/II; POLι upregulation; serotype-specific contrasts; a- transcript topics: DENV-4 infection setup in vitro (MOI 0.1, 5 days, Vero E6 and HUH-7); γH2AX DNA damage signaling in infected cells; Broad suppression of DDR/DNA repair transcripts (BER, HR, NHEJ, NER) with MMR largely unchanged; ATR suppression and its consequence for DNA repair coordination; Telomere length and TRF2 status in infected cells; Maintenance of MMR proteins (MLH1, MSH2, MSH6) despite widespread suppression QC Summary:- factual score: 10/10- metadata score: 10/10- supported core claims: 6- claims flagged for review: 0- metadata checks passed: 4- metadata issues found: 0 Metadata Audited:- article_doi- article_title- article_jou...

Longo LM et al., PNAS - This episode summarizes a PNAS study introducing CLSS, a contrastive two-tower protein language model that coembeds domain sequences, structures, and subsequences into a shared 32-dimensional latent space. Trained self-supervised on one million ECOD domains, CLSS aligns sequence and structure modalities, yields compact embeddings that recapitulate ECOD and CATH hierarchies, outperforms several state-of-the-art PLMs on ProteinShake classification tasks, and powers an interactive viewer for exploring protein space. Key terms: contrastive learning, protein sequence, protein structure, protein domains, protein embeddings. Study Highlights:The authors developed CLSS, a contrastive two-tower model that coembeds full domain sequences, structures, and sampled subsequences into a single latent space. CLSS embeddings recapitulate expert ECOD and CATH hierarchical labels despite never using those labels during training. A subsequence-trained variant (CLSS-sub) meaningfully embeds fragments, and CLSS outperforms comparison PLMs on downstream ProteinShake classification benchmarks. Visualizations of CLSS maps reveal a strong partitioning of domains by cofactor binding and other functional annotations. Conclusion:CLSS demonstrates that sequence and structure can be jointly organized into a compact, informative embedding space that captures domain hierarchy, subsequence reuse, and functional preferences; these embeddings enable efficient downstream classification, visualization, and potential applications in database search, alignment, protein design, and evolutionary analysis. Music:Enjoy the music based on this article at the end of the episode. Article title:Contrastive learning unites sequence and structure in a global representation of protein space First author:Longo LM Journal:PNAS DOI:10.1073/pnas.2532702123 Reference:Longo LM, Yanai G, Axel G, Kolodny R, Ben-Tal N. Contrastive learning unites sequence and structure in a global representation of protein space. PNAS. 2026;123(32):e2532702123. doi:10.1073/pnas.2532702123. License:This episode is based on an open-access article published under the Creative Commons Attribution 4.0 International License (CC BY 4.0) – https://creativecommons.org/licenses/by/4.0/ Support:Base by Base is independent and ad-free — no sponsors, no paywall. If an episode was worth your time, chip in and keep the papers audited and the original songs coming:❤️ Support monthly: https://buy.stripe.com/cNifZhclVebvagk2JDgEg01☕ One-time donation: https://donate.stripe.com/7sY4gz71B2sN3RWac5gEg00 More at basebybase.com On PaperCast Base by Base you'll discover the latest in genomics, functional genomics, structural genomics, and proteomics. Episode link: https://basebybase.com/episodes/clss-contrastive-sequence-structure-protein-space QC:This episode was checked against the original article PDF and publication metadata for the episode release published on 2026-08-11. QC Scope:- article metadata and core scientific claims from the narration- excludes analogies, intro/outro, and music- transcript coverage: Audited transcript portions describing CLSS concept and motivation, two-tower architecture, CLSS-sub subsequences, training on ECOD domains, evaluation on ProteinShake, TSNE visualizations, cofactor and zinc-binding patterns, and limitations.- transcript topics: CLSS concept and motivation; Two-tower architecture: sequence tower (ESM2) and frozen structure encoder (ESM3); CLSS-sub subsequences (20-60 residues); Self-supervised training on ~1 million ECOD domains; Evaluation on ProteinShake and ECOD/CATH hierarchies; t-SNE visualizations showing coembedding of sequence and structure QC Summary:- factual score: 10/10- metadata score: 10/10- supported c...

Axakova A et al., The American Journal of Human Genetics - Axakova et al. generated a variant effect map for AIRE using an insulin‑promoter GFP reporter in HEK293 cells to measure the functional impact of 9,790 missense substitutions and provide calibrated evidence for clinical variant interpretation. Key terms: AIRE, missense variants, variant effect map, APS-1, functional assay. Study Highlights:The authors used an insulin‑promoter‑driven GFP reporter in HEK293 cells and a DT‑POPCode mutagenesis library to assay 9,790 AIRE missense variants. The resulting map recapitulated known functional regions (CARD, SAND, PHD2, C‑terminal), revealed both loss‑ and gain‑of‑function changes, and exposed a blind spot for PHD1 in this assay. Benchmarking against ClinVar and computational predictors enabled calibrated evidence for 70% of ClinVar VUSs and supported reclassification of 32% (109/345) of VUSs. The map also correlated quantitatively with APS‑1 severity in an international cohort and associated damaging variants with hypoparathyroidism and vitamin B12 deficiency anemia in UK Biobank. Conclusion:This proactive, calibrated AIRE variant effect map provides immediate functional evidence to improve missense variant classification and expedite APS‑1 diagnosis, while highlighting assay limitations (PHD1 blind spot, cDNA-based design) that warrant follow-up studies. Music:Enjoy the music based on this article at the end of the episode. Article title:Systematic and proactive evaluation of AIRE missense variant effects First author:Axakova A Journal:The American Journal of Human Genetics DOI:10.1016/j.ajhg.2026.07.008 Reference:Axakova A., Berger A.H., van Loggerenberg W., et al. Systematic and proactive evaluation of AIRE missense variant effects. The American Journal of Human Genetics 113, 1–21 (2026). https://doi.org/10.1016/j.ajhg.2026.07.008 License:This episode is based on an open-access article published under the Creative Commons Attribution 4.0 International License (CC BY 4.0) – https://creativecommons.org/licenses/by/4.0/ Support:Base by Base is independent and ad-free — no sponsors, no paywall. If an episode was worth your time, chip in and keep the papers audited and the original songs coming:❤️ Support monthly: https://buy.stripe.com/cNifZhclVebvagk2JDgEg01☕ One-time donation: https://donate.stripe.com/7sY4gz71B2sN3RWac5gEg00 More at basebybase.com On PaperCast Base by Base you'll discover the latest in genomics, functional genomics, structural genomics, and proteomics. Episode link: https://basebybase.com/episodes/s2-e438-aire-variant-effect-map QC:This episode was checked against the original article PDF and publication metadata for the episode release published on 2026-08-10. QC Scope:- article metadata and core scientific claims from the narration- excludes analogies, intro/outro, and music- transcript coverage: Substantively audited the sections describing the AIRE variant-effect map, high-throughput mutagenesis and screening, structural-domain interpretation (CARD/SAND/PHD1/PHD2), gain-of-function findings, CAM-score genotype-phenotype correlations, and population-level associations (APS-1 cohort and UK Biobank). Also review- transcript topics: AIRE and APS-1 background; Insulin promoter GFP reporter assay in HEK293 cells; DT-POPCode library and missense variant generation; Variant effect map results and validation; Structural-domain mapping (CARD, SAND, PHD1, PHD2, C-terminal); Gain-of-function variants and disordered regions QC Summary:- factual score: 10/10- metadata score: 10/10- supported core claims: 7- claims flagged for review: 0- metadata checks passed: 4- metadata issues found: 0 Metadata Audited:- article_doi- article_title-...

Hanson C et al., The American Journal of Human Genetics - Hanson et al. combine pooled multi-donor human neural progenitor cell "villages" with Townlet, a hierarchical Dirichlet regression model, to estimate donor-specific proliferation and treatment responses from Census-seq. They identify 16p11.2 deletion–associated NPC hyperproliferation and nominate common variants near ZFHX3 for proliferation and an ARNT2-linked locus for lead (Pb) sensitivity. Key terms: cell villages, Dirichlet regression, neural progenitor cells, 16p11.2 deletion, lead (Pb) sensitivity. Study Highlights:The authors developed and validated cell villages of 12–39 donor-derived NPC lines and Townlet, a Dirichlet regression framework, to analyze compositional time-series Census-seq data and estimate donor proliferation and treatment effects. Using this system they detected hyperproliferation of NPCs carrying the 16p11.2 deletion, mapped a common variant near ZFHX3 associated with proliferation, and identified ARNT2-linked variants associated with differential sensitivity to lead. Villages preserved donor-intrinsic growth rates while reducing technical variation, and Townlet outperformed standard models in simulations and empirical benchmarks. Conclusion:Pooled multi-donor NPC villages combined with the Townlet Dirichlet model provide a scalable, reproducible platform to map genetic and gene–environment effects on human cell fitness, nominating 16p11.2, ZFHX3, and ARNT2 as contributors to NPC proliferation and Pb sensitivity. Music:Enjoy the music based on this article at the end of the episode. Article title:Cell villages and Dirichlet modeling map human cell fitness genetics First author:Hanson C Journal:The American Journal of Human Genetics DOI:10.1016/j.ajhg.2026.07.005 Reference:Hanson C., Derebenskiy T., Rodriguez Vega A., et al. Cell villages and Dirichlet modeling map human cell fitness genetics. The American Journal of Human Genetics. 2026;113:1–21. doi:10.1016/j.ajhg.2026.07.005 License:This episode is based on an open-access article published under the Creative Commons Attribution 4.0 International License (CC BY 4.0) – https://creativecommons.org/licenses/by/4.0/ Support:Base by Base is independent and ad-free — no sponsors, no paywall. If an episode was worth your time, chip in and keep the papers audited and the original songs coming:❤️ Support monthly: https://buy.stripe.com/cNifZhclVebvagk2JDgEg01☕ One-time donation: https://donate.stripe.com/7sY4gz71B2sN3RWac5gEg00 More at basebybase.com On PaperCast Base by Base you'll discover the latest in genomics, functional genomics, structural genomics, and proteomics. Episode link: https://basebybase.com/episodes/cell-villages-dirichlet-modeling-human-cell-fitness QC:This episode was checked against the original article PDF and publication metadata for the episode release published on 2026-08-09. QC Scope:- article metadata and core scientific claims from the narration- excludes analogies, intro/outro, and music- transcript coverage: Audited the transcript sections describing Townlet and cell villages, validation against array cultures, 16p11.2 deletion hyperproliferation, GWAS identifying ZFHX3-associated proliferation variants, and lead (Pb) resistance modifiers linked to ARNT2; also reviewed environmental exposome implications and limitations di- transcript topics: Cell villages concept and Townlet model; Census-seq and compositional data challenges; Village vs array validation and donor-intrinsic proliferation; 16p11.2 deletion NPC hyperproliferation in villages; GWAS in villages identifying ZFHX3 locus and rs34470044; Lead (Pb) exposure and ARNT2-associated Pb resistance QC Summary:- factual score: 10/10- metadata score: 10/10- supported core claims:...

Owino BO et al., PNAS - Using TurboID proximity proteomics and microscopy, researchers identify KIAP4 as the canonical member of a conserved Adhesion Related NTPase-like Domain (ARND) family that localizes to the Leishmania adhesion plaque. Deleting KIAP4 disrupts haptomonad adhesion in vitro and prevents colonization of the sand fly stomodeal valve without blocking metacyclogenesis. Key terms: Leishmania, adhesion, KIAP4, ARND family, sand fly. Study Highlights:TurboID::KIAP3 proximity labeling and mass spectrometry identified KIAP4 and multiple ARND family paralogs enriched at the adhered flagellum. KIAP4 colocalizes with KIAP3 at the adhesion plaque and accumulates during haptomonad differentiation. KIAP4 deletion severely reduces in vitro adhesion and abolishes stomodeal valve colonization in Lutzomyia longipalpis, while ARND paralogs are conserved across kinetoplastids and localize to adhered flagella in Trypanosoma congolense. Conclusion:KIAP4 is a foundational adhesion-plaque protein of a conserved ARND family required for Leishmania haptomonad adhesion and stomodeal valve colonization, making the family a potential target for transmission-blocking strategies. Music:Enjoy the music based on this article at the end of the episode. Article title:Identifcation of a conserved gene family with an essential role in Leishmania parasite–insect vector adhesion First author:Owino BO Journal:PNAS DOI:10.1073/pnas.2603653123 Reference:Owino BO, Sunter JD, et al. Identifcation of a conserved gene family with an essential role in Leishmania parasite–insect vector adhesion. Proc Natl Acad Sci U S A (PNAS). 2026;123(30):e2603653123. doi:10.1073/pnas.2603653123 License:This episode is based on an open-access article published under the Creative Commons Attribution 4.0 International License (CC BY 4.0) – https://creativecommons.org/licenses/by/4.0/ Support:Base by Base is independent and ad-free — no sponsors, no paywall. If an episode was worth your time, chip in and keep the papers audited and the original songs coming:❤️ Support monthly: https://buy.stripe.com/cNifZhclVebvagk2JDgEg01☕ One-time donation: https://donate.stripe.com/7sY4gz71B2sN3RWac5gEg00 More at basebybase.com On PaperCast Base by Base you'll discover the latest in genomics, functional genomics, structural genomics, and proteomics. Episode link: https://basebybase.com/episodes/kiap4-arnd-leishmania-adhesion QC:This episode was checked against the original article PDF and publication metadata for the episode release published on 2026-08-08. QC Scope:- article metadata and core scientific claims from the narration- excludes analogies, intro/outro, and music- transcript coverage: Audited sections cover: identification of KIAP4 as canonical ARND member; TurboID proximity-labeling workflow and enrichment results; KIAP4 localization to the adhesion plaque; KIAP4 deletion effects on in vitro adhesion and sand fly stomodeal valve colonization; ARND conservation across kinetoplastids; ARND domain arc- transcript topics: KIAP4 as canonical ARND member localizes to adhesion plaque; TurboID proximity labeling workflow and enriched protein cohort; Localization of ARND paralogs in Leishmania and Trypanosoma congolense; KIAP4 deletion phenotype: impaired adhesion and valve colonization; KIAP4 add-back rescues adhesion defects; ARND domain architecture and Walker A motif absence (inactive NTPase-like domains) QC Summary:- factual score: 10/10- metadata score: 10/10- supported core claims: 4- claims flagged for review: 0- metadata checks passed: 4- metadata issues found: 0 Metadata Audited:- article_doi- article_title- article_journal- license Factual Items Audited:- KIAP4 is the ca...

Ember M et al., PNAS - This episode examines a cryo-EM study of Escherichia coli tRNA-guanine transglycosylase (TGT) that solves the enzyme structure and its covalent intermediate with tRNATyr. Unexpectedly, the TGT homodimer can form covalent intermediates with two tRNAs simultaneously. The work maps peripheral RNA-binding residues required for activity and uses those insights to design higher-affinity dual-TAG RNA substrates for improved RNA-TAG labeling. Key terms: tRNA-guanine transglycosylase, cryo-EM, tRNA modification, RNA-TAG, Escherichia coli. Study Highlights:Using cryo-EM, the authors solved E. coli TGT and its covalent intermediate with tRNATyr and observed that the functional homodimer can form covalent intermediates with two tRNAs, displaying C2 symmetry. They identify peripheral residues (K285, K292, R320, Y35) and a dynamic loop (L98–I104) that stabilize the flipped anticodon loop and are required for covalent intermediate formation. Mutational analysis shows loss of activity for key substitutions, and structure-guided design of dual TAG32 hairpins yields markedly higher-affinity RNA substrates for RNA-TAG labeling. Biophysical assays estimate TAG3 KD ~3–5 µM versus dual TAG32 KD ~0.7–1 µM. Conclusion:The cryo-EM structures revise the canonical model of TGT function by demonstrating dual-substrate engagement and revealing peripheral binding determinants that enable both antibiotic-targeting strategies and improved, high-affinity RNA-labeling reagents. Music:Enjoy the music based on this article at the end of the episode. Article title:Cryo-EM reveals that Escherichia coli tRNA-transglycosylase can bind and act upon two tRNAs First author:Ember M Journal:PNAS DOI:10.1073/pnas.2601895123 Reference:Ember M. Rutha, Mariusz Matyszewski, Alexander Harjung, Jaehee Park, Caroline Knittel, Evan McCormack, and Neal K. Devaraja. Cryo-EM reveals that Escherichia coli tRNA-transglycosylase can bind and act upon two tRNAs. PNAS. 2026;123:e2601895123. doi:10.1073/pnas.2601895123 License:This episode is based on an open-access article published under the Creative Commons Attribution 4.0 International License (CC BY 4.0) – https://creativecommons.org/licenses/by/4.0/ Support:Base by Base is independent and ad-free — no sponsors, no paywall. If an episode was worth your time, chip in and keep the papers audited and the original songs coming:❤️ Support monthly: https://buy.stripe.com/cNifZhclVebvagk2JDgEg01☕ One-time donation: https://donate.stripe.com/7sY4gz71B2sN3RWac5gEg00 More at basebybase.com On PaperCast Base by Base you'll discover the latest in genomics, functional genomics, structural genomics, and proteomics. Episode link: https://basebybase.com/episodes/ecoli-tgt-dual-trna-cryoem QC:This episode was checked against the original article PDF and publication metadata for the episode release published on 2026-08-07. QC Scope:- article metadata and core scientific claims from the narration- excludes analogies, intro/outro, and music- transcript coverage: Audited sections describing (i) the cryo-EM structure of E. coli TGT and its covalent intermediates with tRNA, (ii) binding of two tRNAs and C2 symmetry, (iii) peripheral RNA-binding residues and their mutational analyses, (iv) the L98–I104 dynamic loop and A37 flipping, (v) Y35 involvement, (vi) R112 cross-monomer int- transcript topics: Cryo-EM structure of E. coli TGT and covalent intermediate; Dual tRNA binding and C2 symmetry; Peripheral RNA-binding residues outside active site (K285, K292, R320, Y35, R112); Dynamic loop L98–I104 and anticodon loop A37 flipping; Mutational analyses and effects on covalent intermediate formation; Structure-based design of dual TAG32 hairpins and KD measurements QC Summary:- factual score: 10/10- me...

Ishiya K et al., PNAS - This episode examines a PNAS study that reports two high-coverage ancient human genomes from mainland Japan (an Initial Jomon >67× and a Middle Yayoi >46×). The genomes enable diploid genotyping, demographic reconstructions, ancestry modeling, and AMY1 copy-number analysis that reshape understanding of Jomon and Yayoi histories. Key terms: ancient DNA, Jomon, Yayoi, AMY1, population history. Study Highlights:The authors sequenced two low-contamination, high-coverage genomes from mainland Japan (IY1, Initial Jomon; DO, Middle Yayoi) enabling diploid analyses and CNV inference. Demographic reconstructions show divergent post-LGM trajectories: long-term stability with no expansion in the Jomon lineage and gradual sustained growth in the Yayoi-related ancestral population. Admixture and f-statistics indicate substantial continental Northeast Asian ancestry in the Yayoi individual and genetic continuity between the Yayoi and present-day mainland Japanese. High AMY1 copy numbers (~9–10) in both individuals suggest starch-relevant variation existed before large-scale rice farming. Conclusion:High-coverage ancient genomes from mainland Japan reveal contrasting population histories for Jomon and Yayoi lineages and show that elevated AMY1 copy-number variation relevant to starch consumption predates intensive rice agriculture, refining models of Japanese population formation. Music:Enjoy the music based on this article at the end of the episode. Article title:High-coverage ancient genomes reveal divergent population histories and prehistoric starch-related genetic variation in Japan First author:Ishiya K Journal:PNAS DOI:10.1073/pnas.2606162123 Reference:Ishiya K., Mizuno F., Gojobori J., Kumagai M., et al. High-coverage ancient genomes reveal divergent population histories and prehistoric starch-related genetic variation in Japan. Proc Natl Acad Sci U S A. 2026;123(30):e2606162123. doi:10.1073/pnas.2606162123 License:This episode is based on an open-access article published under the Creative Commons Attribution 4.0 International License (CC BY 4.0) – https://creativecommons.org/licenses/by/4.0/ Support:Base by Base is independent and ad-free — no sponsors, no paywall. If an episode was worth your time, chip in and keep the papers audited and the original songs coming:❤️ Support monthly: https://buy.stripe.com/cNifZhclVebvagk2JDgEg01☕ One-time donation: https://donate.stripe.com/7sY4gz71B2sN3RWac5gEg00 More at basebybase.com On PaperCast Base by Base you'll discover the latest in genomics, functional genomics, structural genomics, and proteomics. Episode link: https://basebybase.com/episodes/high-coverage-ancient-genomes-japan QC:This episode was checked against the original article PDF and publication metadata for the episode release published on 2026-08-06. QC Scope:- article metadata and core scientific claims from the narration- excludes analogies, intro/outro, and music- transcript coverage: Audited the transcript sections describing (1) sampling of two high-coverage genomes (IY1 and DO), (2) authenticity checks and sequencing depth, (3) demographic inferences (PSMC/SMC++), (4) AMY1 copy-number findings, (5) ancestry and admixture contexts, (6) admixture timing, and (7) the dual-structure model; excluded n- transcript topics: Two high-coverage mainland Japan genomes (IY1 Jomon, DO Yayoi); Petrous bone sampling and ancient DNA authentication; PSMC/SMC++ demographic inferences post-LGM; AMY1 copy-number variation and starch-diet adaptation; Ancestry and continental admixture in Yayoi vs Jomon; Admixture timing via LD decay and related methods QC Summary:- factual score: 10/10- metadata score: 10/10- supported core claims: 5- claims flagged for review: 0<...

Wu G et al., Proceedings of the National Academy of Sciences - This episode examines a PNAS study that identifies site-specific lactylation of HSP90α as a metabolic signal linking glycolysis to mitochondrial biogenesis in ovarian cells. Lactylation at K58 and K616 modulates HSP90α phosphorylation, enabling nuclear import of PGC1α and LRPGC1, boosting mitochondrial number, cholesterol import, estradiol synthesis, and follicle growth; CREBBP, ACSS2 and GTPSCS participate in the lactylation pathway. Key terms: HSP90α, lactylation, PGC1α, mitochondrial biogenesis, estradiol. Study Highlights:The authors show that sodium lactate promotes HSP90α lactylation at K58 and K616 via CREBBP and lactyl-CoA synthesis (ACSS2/GTPSCS). K58 lactylation enhances ULK1 recruitment and S39 phosphorylation while K616 lactylation blocks CDK5-mediated S596 phosphorylation, together enabling HSP90α to chaperone PGC1α and LRPGC1 into the nucleus. Nuclear PGC1α/LRPGC1 activate NRF1/2 targets (Tfb1m, Tfb2m, Tfam) to drive mitochondrial biogenesis, increase mitochondrial cholesterol import and raise estradiol production, with in vivo lactate raising ovarian mtDNA, TOM20, estradiol and antral follicle number. Conclusion:Site-specific lactylation of HSP90α integrates glycolytic flux with chaperone and phosphorylation control to promote PGC1α/LRPGC1 nuclear import, mitochondrial biogenesis and steroidogenic output in ovarian cells, revealing a metabolite-dependent regulatory axis with potential implications for ovarian function and fertility. Music:Enjoy the music based on this article at the end of the episode. Article title:HSP90α lactylation orchestrates PGC1α and LRPGC1 nuclear translocation driving mitochondrial biogenesis First author:Wu G Journal:Proceedings of the National Academy of Sciences DOI:10.1073/pnas.2528979123 Reference:Wu G., Li H., He T., et al. HSP90α lactylation orchestrates PGC1α and LRPGC1 nuclear translocation driving mitochondrial biogenesis. PNAS. 2026;123(30):e2528979123. doi:10.1073/pnas.2528979123 License:This episode is based on an open-access article published under the Creative Commons Attribution 4.0 International License (CC BY 4.0) – https://creativecommons.org/licenses/by/4.0/ Support:Base by Base is independent and ad-free — no sponsors, no paywall. If an episode was worth your time, chip in and keep the papers audited and the original songs coming:❤️ Support monthly: https://buy.stripe.com/cNifZhclVebvagk2JDgEg01☕ One-time donation: https://donate.stripe.com/7sY4gz71B2sN3RWac5gEg00 More at basebybase.com On PaperCast Base by Base you'll discover the latest in genomics, functional genomics, structural genomics, and proteomics. Episode link: https://basebybase.com/episodes/hsp90a-lactylation-mito-biogenesis QC:This episode was checked against the original article PDF and publication metadata for the episode release published on 2026-07-23. QC Scope:- article metadata and core scientific claims from the narration- excludes analogies, intro/outro, and music- transcript coverage: Audited the main mechanistic narrative from lactate signaling to HSP90α lactylation, ULK1/CDK5-regulated phosphorylation, nuclear import of PGC1α/LRPGC1, NRF1/2-driven transcription, mitochondrial biogenesis, cholesterol import, and in vivo hormonal/follicle outcomes.- transcript topics: Lactate as signaling molecule and lactylation concept; HSP90α lactylation at K58 and K616; CREBBP as the lactyltransferase and lactyl-CoA synthesis pathway; ULK1 and CDK5 regulation of S39 and S596 phosphorylation; HSP90α-mediated nuclear import of PGC1α and LRPGC1; NRF1/NRF2 target gene activation (TFB1M, TFB2M, Tfam) and mitochondrial biogenesis QC Summary:- factual score: 10/10- metadata score: 10/10- supported core claim...

Mukhamedova L et al., Proceedings of the National Academy of Sciences - Using cryo-electron tomography and single-particle cryo-EM of infected Cos-7 cells, the authors show that echovirus 18 (E18) releases its RNA in vivo by capsid opening with loss of one to three pentamers. Binding to the neonatal Fc receptor (FcRn) expels VP1 pocket factors and primes particles for uncoating. Activated intermediates were not detected in cells, indicating rapid genome release. Key terms: echovirus 18, enterovirus, genome release, capsid opening, FcRn. Study Highlights:Cryo-EM/ET of infected cells resolved genome-containing E18 particles to 4.3 Å and imaged empty and open capsids in situ. Binding of E18 to FcRn induces partial expulsion of VP1 pocket factors, consistent with receptor- triggered priming. Empty capsids observed inside cells lack one to three pentamers of capsid proteins, providing direct evidence of capsid opening as the genome release mechanism. Activated particles were not detected in cells, implying these intermediates are short- lived and genome release is rapid. Conclusion:Capsid opening is the physiological uncoating mechanism of echovirus 18 in infected cells: receptor (FcRn) binding expels pocket factors and primes particles, and genome release occurs rapidly via loss of one to several pentamers with empty, incomplete capsids observed in situ. Music:Enjoy the music based on this article at the end of the episode. Article title:Particles of echovirus 18 open to release their genomes in vivo First author:Mukhamedova L Journal:Proceedings of the National Academy of Sciences DOI:10.1073/pnas.2601182123 Reference:Mukhamedova L., Buchta D., Hrebík D., et al. Particles of echovirus 18 open to release their genomes in vivo. PNAS. 2026;123(30):e2601182123. https://doi.org/10.1073/pnas.2601182123 License:This episode is based on an open-access article published under the Creative Commons Attribution 4.0 International License (CC BY 4.0) – https://creativecommons.org/licenses/by/4.0/ Support:Base by Base is independent and ad-free — no sponsors, no paywall. If an episode was worth your time, chip in and keep the papers audited and the original songs coming:❤️ Support monthly: https://buy.stripe.com/cNifZhclVebvagk2JDgEg01☕ One-time donation: https://donate.stripe.com/7sY4gz71B2sN3RWac5gEg00 More at basebybase.com On PaperCast Base by Base you'll discover the latest in genomics, functional genomics, structural genomics, and proteomics. Episode link: https://basebybase.com/episodes/echovirus-18-capsid-opening-432 QC:This episode was checked against the original article PDF and publication metadata for the episode release published on 2026-07-23. QC Scope:- article metadata and core scientific claims from the narration- excludes analogies, intro/outro, and music- transcript coverage: Audited the transcript sections describing E18 structure, FcRn binding and pocket-factor expulsion, endosomal acidification and detachment, in vivo evidence of empty/open capsids, and the genome release mechanism.- transcript topics: Echovirus 18 capsid structure and pocket factor; FcRn receptor binding and pocket-factor expulsion; Endocytosis and endosomal acidification as uncoating trigger; In vivo evidence: genome-containing particles lack pocket factors; Capsid opening with loss of one to three pentamers; Endosome rupture and cytoplasmic delivery of RNA QC Summary:- factual score: 10/10- metadata score: 10/10- supported core claims: 5- claims flagged for review: 0- metadata checks passed: 4- metadata issues found: 0 Metadata Audited:- article_doi- article_title- article_journal- license Factual Items Audited:- In vivo, echovirus 18 genome release...

Owino BO et al., Proceedings of the National Academy of Sciences - TurboID proximity labeling and proteomics identify KIAP4 as the canonical member of a conserved Adhesion Related NTPase-like Domain (ARND) family that localizes to the Leishmania adhesion plaque. KIAP4 deletion disrupts haptomonad adhesion and prevents stomodeal valve colonization in sand flies. Key terms: Leishmania, adhesion, KIAP4, ARND family, vector colonization. Study Highlights:Using TurboID-tagged KIAP3 and mass spectrometry, the authors identified KIAP4 and multiple ARND family paralogs enriched at the adhered flagellum. KIAP4 localizes to the adhesion plaque alongside KIAP3 and accumulates during haptomonad differentiation. KIAP4 deletion severely reduces in vitro adhesion and abolishes stomodeal valve colonization in Lutzomyia longipalpis, while ARND paralogs are conserved and localize to adhered flagella in Trypanosoma congolense. Phylogenetic analysis shows ancient duplications and lineage-specific expansions of the ARND family across kinetoplastids. Conclusion:KIAP4 is a foundational adhesion-plaque protein and founding member of a conserved ARND family required for Leishmania haptomonad adhesion and sand fly stomodeal valve colonization, making ARND proteins candidate targets for transmission-blocking strategies. Music:Enjoy the music based on this article at the end of the episode. Article title:Identification of a conserved gene family with an essential role inLeishmaniaparasite–insect vector adhesion First author:Owino BO Journal:Proceedings of the National Academy of Sciences DOI:10.1073/pnas.2603653123 Reference:Owino BO, Yanase R, Pruzinovac K, Farr H, Lopez Y, Marron AO, Vaughan S, Volf P, Sunter JD. Identification of a conserved gene family with an essential role in Leishmania parasite–insect vector adhesion. Proc Natl Acad Sci U S A. 2026;123(30):e2603653123. doi:10.1073/pnas.2603653123 License:This episode is based on an open-access article published under the Creative Commons Attribution 4.0 International License (CC BY 4.0) – https://creativecommons.org/licenses/by/4.0/ Support:Base by Base is independent and ad-free — no sponsors, no paywall. If an episode was worth your time, chip in and keep the papers audited and the original songs coming:❤️ Support monthly: https://buy.stripe.com/cNifZhclVebvagk2JDgEg01☕ One-time donation: https://donate.stripe.com/7sY4gz71B2sN3RWac5gEg00 More at basebybase.com On PaperCast Base by Base you'll discover the latest in genomics, functional genomics, structural genomics, and proteomics. Episode link: https://basebybase.com/episodes/kiap4-arnd-leishmania-adhesion QC:This episode was checked against the original article PDF and publication metadata for the episode release published on 2026-07-23. QC Scope:- article metadata and core scientific claims from the narration- excludes analogies, intro/outro, and music- transcript coverage: Audited spoken sections covering (1) identification of KIAP4 as the canonical ARND member and its adhesion-plaque localization, (2) TurboID proximity labeling methodology and protein enrichment results, (3) KIAP4 functional analyses including in vitro adhesion and in vivo valve colonization, (4) ARND conservation acros- transcript topics: KIAP4 and ARND identification in Leishmania; TurboID proximity labeling workflow and enrichment of adhesion-plaque components; Localization of KIAP4 and KIAP3 within the adhesion plaque; KIAP4 knockout effects on haptomonad adhesion and sand fly stomodeal valve colonization; ARND conservation across kinetoplastids (Trypanosoma congolense; T. brucei cross-species data); Inactive Walker A motif in ARND proteins (NTPase-like domains) QC Summary:- factual score: 10/10- metadata score: 1...

Sandin MM et al., Proceedings of the National Academy of Sciences - Molecular clocks and diversification models applied to a 75,975-OTU rDNA dataset, including long-read environmental sequences and 77 fossil calibrations, indicate crown-group eukaryotes diversified steadily from the mid‑Proterozoic with Archaeplastida dominating early diversity. Key terms: eukaryote evolution, Proterozoic diversification, Archaeplastida, molecular clock, environmental sequencing. Study Highlights:The study assembled 75,975 nonredundant rDNA OTUs combining long-read environmental metabarcoding and reference sequences and calibrated 32 timetrees with 77 fossil constraints. Molecular dating places LECA at ~1775 Ma and finds most eukaryotic supergroups originating across the Mesoproterozoic. Diversification analyses (ClaDS, BAMM) show steady accumulation of crown-group diversity through the Proterozoic, with Archaeplastida exhibiting an early rapid diversification likely tied to plastid endosymbiosis. Results suggest crown eukaryotes were ecologically and taxonomically diverse long before clear crown-group fossils appear. Conclusion:Integrating extensive environmental sequencing with molecular dating and diversification models reveals that crown-group eukaryotes were diversifying steadily from the mid‑Proterozoic, overturning the notion of a biologically stagnant “boring billion” and indicating early ecological interactions and endosymbioses drove diversification. Music:Enjoy the music based on this article at the end of the episode. Article title:Environmental phylogenetics supports a steady diversification of crown eukaryotes starting from the mid-Proterozoic First author:Sandin MM Journal:Proceedings of the National Academy of Sciences DOI:10.1073/pnas.2600283123 Reference:Sandin MM, Burki F, Cohen PA, Morlond H (2026) Environmental phylogenetics supports a steady diversification of crown eukaryotes starting from the mid-Proterozoic. PNAS 123(29):e2600283123. doi:10.1073/pnas.2600283123 License:This episode is based on an open-access article published under the Creative Commons Attribution 4.0 International License (CC BY 4.0) – https://creativecommons.org/licenses/by/4.0/ Support:Base by Base is independent and ad-free — no sponsors, no paywall. If an episode was worth your time, chip in and keep the papers audited and the original songs coming:❤️ Support monthly: https://buy.stripe.com/cNifZhclVebvagk2JDgEg01☕ One-time donation: https://donate.stripe.com/7sY4gz71B2sN3RWac5gEg00 More at basebybase.com On PaperCast Base by Base you'll discover the latest in genomics, functional genomics, structural genomics, and proteomics. Episode link: https://basebybase.com/episodes/environmental-phylogenetics-steady-diversification-crown-eukaryotes QC:This episode was checked against the original article PDF and publication metadata for the episode release published on 2026-07-23. QC Scope:- article metadata and core scientific claims from the narration- excludes analogies, intro/outro, and music- transcript coverage: Audited transcript segments covering LECA dating and molecular clock; environmental sequencing (OTUs and 18S-28S rDNA); Archaeplastida endosymbiosis and early diversification; Proterozoic diversification dynamics and the 'boring billion' reinterpretation; predator–prey dynamics and fossil evidence; and limitations/samp- transcript topics: LECA dating and molecular clock; Environmental metabarcoding and OTU dataset (75,975 OTUs); Archaeplastida diversification and plastid endosymbiosis; Proterozoic diversification vs. 'boring billion' narrative; Predation, defense, and ecosystem dynamics (fossil evidence); Sampling limitations and diversification modeling (ClaDS, BAMM) QC Summary:- factual score: 10/10- met...

Barna LS et al., Human Genetics and Genomics Advances - We summarize a psychometric validation of the EAGL measure using US adult online samples. The study produced a validated 17-item EAGL-short that captures three core genetic literacy constructs and can be used to assess and target genetic communication and education. Key terms: genetic literacy, EAGL, psychometrics, knowledge comprehension, autism. Study Highlights:The authors administered the EAGL across three online US samples (combined N ≈ 2,708) and used exploratory and confirmatory factor analyses to refine the instrument. The final EAGL-short contains 17 items loading on three factors: subjective knowledge, knowledge comprehension, and conceptual (objective) knowledge, with CFA fit indices showing excellent model fit (CFI = 0.996, RMSEA = 0.031, SRMR = 0.080). Regression analyses found numeracy to be the strongest predictor across subscales, a personal connection to autism raised subjective familiarity but not comprehension or conceptual knowledge, and metropolitan vs non-metropolitan status showed no main effects. An interaction between education and connection to autism was observed for knowledge comprehension, highlighting education as a moderator. Conclusion:The EAGL-short is a psychometrically sound, 17-item tool that measures subjective knowledge, knowledge comprehension, and conceptual genetic knowledge in US adults; it enables more precise assessment of genetic literacy and the design of targeted educational interventions, though further validation in other languages and settings is recommended. Music:Enjoy the music based on this article at the end of the episode. Article title:Psychometric validation of the education and assessment of genetic literacy or the EAGL measure First author:Barna LS Journal:Human Genetics and Genomics Advances DOI:10.1016/j.xhgg.2026.100651 Reference:Barna LS, Liao Y, Wierzbicki MR, Ramírez-Renta GM, Kaphingst KA, Gunter C. Psychometric validation of the education and assessment of genetic literacy or the EAGL measure. Human Genetics and Genomics Advances. 2026;7:100651. doi:10.1016/j.xhgg.2026.100651. License:This episode is based on an open-access article published under the Creative Commons Attribution 4.0 International License (CC BY 4.0) – https://creativecommons.org/licenses/by/4.0/ Support:Base by Base is independent and ad-free — no sponsors, no paywall. If an episode was worth your time, chip in and keep the papers audited and the original songs coming:❤️ Support monthly: https://buy.stripe.com/cNifZhclVebvagk2JDgEg01☕ One-time donation: https://donate.stripe.com/7sY4gz71B2sN3RWac5gEg00 More at basebybase.com On PaperCast Base by Base you'll discover the latest in genomics, functional genomics, structural genomics, and proteomics. Episode link: https://basebybase.com/episodes/eagl-psychometric-validation QC:This episode was checked against the original article PDF and publication metadata for the episode release published on 2026-07-23. QC Scope:- article metadata and core scientific claims from the narration- excludes analogies, intro/outro, and music- transcript coverage: Substantive auditing covered the EAGL-short validation narrative, the three constructs, the autism infographic comprehension exercise, numeracy as predictor, autism connection effects, geography/metropolitan status findings, and the education-autism interaction implications as presented in the transcript.- transcript topics: EAGL-short three-factor structure; Autism infographic used for knowledge comprehension; Numeracy as predictor of genetic literacy; Autism connection influencing subjective knowledge; Geography/metro status effects on literacy; Education by autism interaction affecting knowledge comprehension QC Summary:

Ait Oumelloul M et al., Human Genetics and Genomics Advances - Untargeted plasma metabolomics (1,930 features) in 1,244 participants of the Swiss HIV Cohort Study were paired with genome-wide genotypes to map genetic influences on metabolite levels, test colocalization with eQTLs, and apply Mendelian randomization to probe causal links with aging-related biomarkers and diseases. Key terms: HIV, metabolomics, GWAS, Mendelian randomization, NAT8. Study Highlights:The study performed GWAS on 1,930 putative plasma metabolites measured by untargeted mass spectrometry in 1,244 people with HIV and identified 27 metabolites associated with 12 genetic loci, including NAT8, FUT2, PYROXD2, and FADS. Colocalization analyses found that 24 of the 27 metabolite loci overlapped with tissue eQTLs, linking genetic variants to gene expression and metabolite variation. Mendelian randomization using MR-link-2 provided evidence for putative causal relationships, notably genetically higher N-acetylcitrulline associated with lower serum creatinine (protective for kidney function) and chorismate linked to higher cholesterol and triglycerides. Sensitivity analyses across ancestries and sex and partial replication in non-HIV data supported the robustness of key signals. Conclusion:Integrating untargeted metabolomics with GWAS, eQTL colocalization, and MR in people with HIV revealed host genetic regulation of plasma metabolites, identified colocalized expression signals, and suggested causal links between specific metabolites and kidney and lipid biomarkers, highlighting targets for follow-up and the utility of multi-omics for precision comorbidity research in this population. Music:Enjoy the music based on this article at the end of the episode. Article title:Genome-wide association study of untargeted plasma metabolomic profiles identifies host genetic regulation in people with HIV First author:Ait Oumelloul M Journal:Human Genetics and Genomics Advances DOI:10.1016/j.xhgg.2026.100635 Reference:Ait Oumelloul M, van der Graaf A, Tang S, Thorball CW, Labarile M, Saadat A, Timonina V, Schöpf IC, Wandeler G, Nemeth J, Cavassini M, Calmy A, Schmid P, Stöckle M, Elzi L, Zamboni N, Kouyos RD, Tarr PE, Fellay J; Swiss HIV Cohort Study. Genome-wide association study of untargeted plasma metabolomic profiles identifies host genetic regulation in people with HIV. Human Genetics and Genomics Advances. 2026;7:100635. https://doi.org/10.1016/j.xhgg.2026.100635 License:This episode is based on an open-access article published under the Creative Commons Attribution 4.0 International License (CC BY 4.0) – https://creativecommons.org/licenses/by/4.0/ Support:Base by Base is independent and ad-free — no sponsors, no paywall. If an episode was worth your time, chip in and keep the papers audited and the original songs coming:❤️ Support monthly: https://buy.stripe.com/cNifZhclVebvagk2JDgEg01☕ One-time donation: https://donate.stripe.com/7sY4gz71B2sN3RWac5gEg00 More at basebybase.com On PaperCast Base by Base you'll discover the latest in genomics, functional genomics, structural genomics, and proteomics. Episode link: https://basebybase.com/episodes/genetic-metabolomics-hiv-428 QC:This episode was checked against the original article PDF and publication metadata for the episode release published on 2026-07-23. QC Scope:- article metadata and core scientific claims from the narration- excludes analogies, intro/outro, and music- transcript coverage: Audited portions include study design and population, untargeted metabolomics, GWAS of metabolites, eQTL colocalization, Mendelian randomization analyses, and key metabolite–gene–disease links (NAT8/N-acetylcitrulline, chorismate, F11/5-HTP), along with limitations and clinical implications discussed in the transcrip...

Simpson RC et al., Trends in Genetics - This forum reviews evidence that host genetic variants associated with metabolic disease often overlap with loci that shape gut microbiome composition and function. Examples include LCT/MCM6 linking Bifidobacterium to reduced T2D risk, defensin locus variants affecting DEFA26 and Akkermansia abundance, and rs7133214 associating with HbA1c. The authors outline mechanisms, analytic tools, and experimental strategies to resolve causality and call for centralized microbiome–genetic resources. Key terms: gut microbiome, genetics, type 2 diabetes, defensins, bile acids. Study Highlights:The authors compile microbial GWAS loci and perform phenome-wide scans using the Synteny tool, revealing significant overlaps between microbe-associated SNPs and metabolic traits including obesity, HDL, blood glucose, and T2D. Case studies highlight loci such as LCT/MCM6, defensin genes (DEFA26–Akkermansia), and rs7133214 (methionine pathway) as examples of microbiome-mediated effects. Mechanisms likely include immune-mediated (Paneth cell defensins, NOD2, FUT2) and substrate/metabolite-mediated (lactose metabolism, bile acids, polyamines) pathways. The paper advocates integrated multi-omic studies, Mendelian randomisation, and human–mouse syntenic mapping, and emphasizes the need for a centralized database to enable causal inference. Conclusion:Host genetic control of the gut microbiome is widespread and may mediate many genetic links to metabolic disease; resolving causality will require integrated multi-omic datasets, improved causal-mapping tools, standardized databases, and complementary human and controlled mouse studies. Music:Enjoy the music based on this article at the end of the episode. Article title:The gut microbiome as an effector of metabolic disease gene variants First author:Simpson RC Journal:Trends in Genetics DOI:10.1016/j.tig.2026.03.011 Reference:Simpson RC, Cutler HB, James DE, Masson SWC. The gut microbiome as an effector of metabolic disease gene variants. Trends in Genetics. 2026;42(7):585-588. https://doi.org/10.1016/j.tig.2026.03.011 License:This episode is based on an open-access article published under the Creative Commons Attribution 4.0 International License (CC BY 4.0) – https://creativecommons.org/licenses/by/4.0/ Support:Base by Base is independent and ad-free — no sponsors, no paywall. If an episode was worth your time, chip in and keep the papers audited and the original songs coming:❤️ Support monthly: https://buy.stripe.com/cNifZhclVebvagk2JDgEg01☕ One-time donation: https://donate.stripe.com/7sY4gz71B2sN3RWac5gEg00 More at basebybase.com On PaperCast Base by Base you'll discover the latest in genomics, functional genomics, structural genomics, and proteomics. Episode link: https://basebybase.com/episodes/genes-gut-microbiome-metabolic-variants QC:This episode was checked against the original article PDF and publication metadata for the episode release published on 2026-07-23. QC Scope:- article metadata and core scientific claims from the narration- excludes analogies, intro/outro, and music- transcript coverage: Substantively audited portions covering: (1) host genetic regulation of the gut microbiome and immune barrier, (2) specific gene–microbiome examples (LCT/MCM6, defensin locus, TCF7L2), (3) methodological approach (Synteny, CNV/MR concepts), (4) overlaps between microbial SNPs and human metabolic traits (HbA1c, HDL, obe- transcript topics: Gut microbiome as metabolic organ governed by host genetics; Lactase persistence (LCT/MCM6) and T2D risk via microbial metabolism; Defensin locus variants and Akkermansia muciniphila in mice; TCF7L2's role in Paneth cell development and dysbiosis; Synteny tool, microbial GWAS, and Mendelian randomisation conce...

Guo K et al., Cell Genomics - ProtoCloud is a self-explaining deep generative model that embeds single cells around cell-type-specific prototypes to deliver accurate, uncertainty-aware cell type annotation and gene-level explanations from raw UMI counts. Key terms: single-cell, explainable AI, prototypical models, cell type annotation, uncertainty estimation. Study Highlights:ProtoCloud achieves accurate and efficient annotation of single-cell data, including improved detection of rare cell types, by organizing embeddings around learned prototypes. A disentangled latent space separates biological identity from batch and nuisance variation, improving robustness and label transfer. Built-in uncertainty quantification based on cell–prototype similarity identifies and enables correction of misannotations. Prototypical relevance propagation backpropagates similarity to highlight genes driving classification for instant gene‑level explainability. Conclusion:By combining a decomposed VAE, learnable prototypes, PRP-based gene relevance, and calibrated similarity-based uncertainty, ProtoCloud provides accurate, interpretable, and robust single-cell annotations that detect rare states, correct label errors, and nominate marker genes to support atlas construction and disease studies. Music:Enjoy the music based on this article at the end of the episode. Article title:ProtoCloud: A prototypical self-explaining model for single-cell analysis First author:Guo K Journal:Cell Genomics DOI:10.1016/j.xgen.2026.101217 Reference:Guo K. & Ding J. ProtoCloud: A prototypical self-explaining model for single-cell analysis. Cell Genomics 6, 101217 (2026). doi:10.1016/j.xgen.2026.101217 License:This episode is based on an open-access article published under the Creative Commons Attribution 4.0 International License (CC BY 4.0) – https://creativecommons.org/licenses/by/4.0/ Support:Base by Base is independent and ad-free — no sponsors, no paywall. If an episode was worth your time, chip in and keep the papers audited and the original songs coming:❤️ Support monthly: https://buy.stripe.com/cNifZhclVebvagk2JDgEg01☕ One-time donation: https://donate.stripe.com/7sY4gz71B2sN3RWac5gEg00 More at basebybase.com On PaperCast Base by Base you'll discover the latest in genomics, functional genomics, structural genomics, and proteomics. Episode link: https://basebybase.com/episodes/protocloud-prototypical-self-explaining-single-cell QC:This episode was checked against the original article PDF and publication metadata for the episode release published on 2026-07-23. QC Scope:- article metadata and core scientific claims from the narration- excludes analogies, intro/outro, and music- transcript coverage: Audited the transcript segments describing ProtoCloud architecture, training, uncertainty quantification, and key biological validations (PBMC, RGC time course, EoE).- transcript topics: ProtoCloud architecture and prototypes; Disentangled latent space with z1 and z2; Prototypical relevance propagation (PRP) and HRGs; Robustness to label noise (20% perturbation); PBMC30K annotation corrections (NKG7 example); Time-course retinal ganglion cells after optic nerve crush QC Summary:- factual score: 10/10- metadata score: 10/10- supported core claims: 7- claims flagged for review: 0- metadata checks passed: 4- metadata issues found: 0 Metadata Audited:- article_doi- article_title- article_journal- license Factual Items Audited:- ProtoCloud uses six prototypes per cell type by default- Latent space is partitioned into two components: z1 for cell-type identity and z2 for batch/noise factors- PRP identifies gene-level relevance and HRGs (e.g., CD79B, LY9)...

Staklinski SJ et al., Cell Genomics 6, 101193 (2026) - This episode explores BEAM, a Bayesian framework built on BEAST 2 that jointly infers cell-lineage phylogenies and tissue-migration graphs from CRISPR-based lineage-tracing data. The method quantifies uncertainty, improves reconstruction versus parsimony-based approaches, and supports Bayes-factor hypothesis testing of migration models. Applications to simulated data and mouse lung and prostate datasets reveal complex migration patterns and highlight limits imposed by sparse mutational signal. Key terms: Bayesian inference, metastasis, lineage tracing, phylogenetics, BEAM. Study Highlights:BEAM jointly samples lineage trees and tissue-migration histories, producing posterior distributions over migration graphs and timing. In simulations BEAM outperforms existing parsimony-based methods across a range of mutation and migration regimes and is robust to missing barcode data. Applied to mouse lung and prostate datasets, BEAM uncovers complex, heterogeneous migration patterns and provides conservative estimates of metastasis-to-metastasis and primary-reseeding events. The framework also implements Bayes-factor tests to assess dataset informativeness and to compare competing migration models. Conclusion:BEAM provides a fully Bayesian approach that integrates lineage-tree and migration-graph inference, quantifies uncertainty, and enables formal hypothesis testing; it improves accuracy in many simulated regimes and reveals richer metastatic histories in real datasets, while its utility is constrained by sparse mutational information and current scalability limits. Music:Enjoy the music based on this article at the end of the episode. Article title:Bayesian inference of tissue-migration histories in metastatic cancer from cell-lineage tracing data First author:Staklinski SJ Journal:Cell Genomics 6, 101193 (2026) DOI:10.1016/j.xgen.2026.101193 Reference:Staklinski SJ, Scheben A, Brault LM, Hassett R, Serio RN, Xing J, Nowak DG, Siepel A. Bayesian inference of tissue-migration histories in metastatic cancer from cell-lineage tracing data. Cell Genomics. 2026;6:101193. doi:10.1016/j.xgen.2026.101193 License:This episode is based on an open-access article published under the Creative Commons Attribution 4.0 International License (CC BY 4.0) – https://creativecommons.org/licenses/by/4.0/ Support:Base by Base is independent and ad-free — no sponsors, no paywall. If an episode was worth your time, chip in and keep the papers audited and the original songs coming:❤️ Support monthly: https://buy.stripe.com/cNifZhclVebvagk2JDgEg01☕ One-time donation: https://donate.stripe.com/7sY4gz71B2sN3RWac5gEg00 More at basebybase.com On PaperCast Base by Base you'll discover the latest in genomics, functional genomics, structural genomics, and proteomics. Episode link: https://basebybase.com/episodes/beam-bayesian-inference-metastasis QC:This episode was checked against the original article PDF and publication metadata for the episode release published on 2026-07-23. QC Scope:- article metadata and core scientific claims from the narration- excludes analogies, intro/outro, and music- transcript coverage: Audited the transcript's substantive claims about BEAM's methodology, benchmarking against parsimony methods, simulated performance, real-data findings (lung and prostate), Bayes-factor testing, and limitations/future directions; compared against the canonical article text.- transcript topics: BEAM Bayesian joint inference on BEAST 2; Two-step parsimony methods and their limitations; Simulation benchmarks and edgewise performance; Real-data analyses: lung cancer migration histories; Prostate cancer migration histories and data informativeness; Bayesian hypothesis testing and Bayes fac... Chapters (00:00:02) - Papercast: The Science of Genomics(00:00:29) - How does cancer spread? The '(00:05:55) - Bayesian Analysis of Cancer metastasis(00:10:55) - Beme the Better Way to Map Prostate Cancer?(00:15:16) - Beme the computational lung cancer model

Cox RM et al., Cell Genomics 6, 101254 - Cox et al. reconstruct a conserved protein interaction network for the last eukaryotic common ancestor using >26,000 mass spectrometry experiments across 31 species and demonstrate how the ancient interactome predicts and explains modern human disease mechanisms. Key terms: LECA, protein interactome, co-fractionation mass spectrometry, ciliopathy, V-ATPase. Study Highlights:The authors inferred a core LECA gene set and integrated ∼26,000 mass spectrometry experiments from 31 eukaryotes to reconstruct a conserved interactome of 109,466 pairwise interactions among 3,193 orthogroups. The map recovers known complexes (e.g., ARP2/3, TRAPP, V-ATPase, HOPS/CORVET) and reveals unexpected ancient interactions and lineage-specific losses. Network propagation on this interactome predicted novel gene-disease links validated experimentally: EFHC2 mislocalization linked to ciliopathic renal failure, ATP6V1A implicated in osteopetrosis with corresponding increased bone density in mouse knockouts, and GLG1 disruption impairing IFT and ciliation relevant to SRTD. The dataset supports a complex LECA capable of cell projection machinery and provides a framework for linking deep conservation to medical phenotypes. Conclusion:An experimentally reconstructed LECA interactome defines deeply conserved macromolecular assemblies that have persisted for nearly two billion years and can predict modern disease mechanisms, as shown by validated links to ciliopathies, osteopetrosis, and short-rib thoracic dysplasia. Music:Enjoy the music based on this article at the end of the episode. Article title:A protein interactome for the last eukaryotic common ancestor illuminates the biochemical basis of modern genetic diseases First author:Cox RM Journal:Cell Genomics 6, 101254 DOI:10.1016/j.xgen.2026.101254 Reference:Cox RM, Papoulas O, Shril S, et al. A protein interactome for the last eukaryotic common ancestor illuminates the biochemical basis of modern genetic diseases. Cell Genomics. 2026;6:101254. https://doi.org/10.1016/j.xgen.2026.101254 License:This episode is based on an open-access article published under the Creative Commons Attribution 4.0 International License (CC BY 4.0) – https://creativecommons.org/licenses/by/4.0/ Support:Base by Base is independent and ad-free — no sponsors, no paywall. If an episode was worth your time, chip in and keep the papers audited and the original songs coming:❤️ Support monthly: https://buy.stripe.com/cNifZhclVebvagk2JDgEg01☕ One-time donation: https://donate.stripe.com/7sY4gz71B2sN3RWac5gEg00 More at basebybase.com On PaperCast Base by Base you'll discover the latest in genomics, functional genomics, structural genomics, and proteomics. Episode link: https://basebybase.com/episodes/leca-interactome-modern-disease QC:This episode was checked against the original article PDF and publication metadata for the episode release published on 2026-07-23. QC Scope:- article metadata and core scientific claims from the narration- excludes analogies, intro/outro, and music- transcript coverage: Substantively audited transcript sections: LECA concept and health relevance; CFMS data integration across 31 species; conserved vesicle tethering complexes and actin cytoskeleton in LECA; primordial origins of cell projection/phagocytosis; EFHC2 ciliopathy mechanism; ATP6V1A osteopetrosis; GLG1 in ciliogenesis and SRT- transcript topics: LECA concept and health relevance; CFMS data integration across 31 species; Conserved vesicle tethering complexes (TRAPP, GARP/COG, HOPS); Actin cytoskeleton and ARP2/3 in LECA; Primordial origins of cell projection and phagocytosis; EFHC2 ciliary mechanism in renal disease QC Summary:- factual score: 10/10- metadata score:... Chapters (00:00:20) - Papercast: Dating the genetics of humans(00:01:29) - Machine-learning maps the interactions of a billion year old cell(00:04:44) - Could the LECA Intersectome Identify Human Diseases?

Aguirre M et al., Cell Genomics - Aguirre et al. use simulated gene regulatory networks and a linear structural equation model to show how sparsity, modularity, and hub regulators shape the genome-wide distribution of cis- and trans-heritability of gene expression. Their results indicate gene expression is less polygenic but more pleiotropic than previously thought. Key terms: gene regulatory networks, trans-eQTL, cis-heritability, modularity, hub regulators. Study Highlights:The authors model local motifs, modular group structure, and global hub regulators to study their effects on cis- and trans-acting genetic variance. They show that sparsity, modularity, and hub-like out-degree distributions together best reproduce the observed distribution of cis-heritability in human whole-blood data. Hub regulators shorten network paths and concentrate trans-acting variance at pleiotropic loci. Local motifs mediate much of the effect of modular groups on trans-heritability. Conclusion:Network topology constrains the genetic architecture of gene expression: realistic GRNs are sparse, modular, and hub-rich, leading to fewer regulators per gene but more repeated use of the same regulators across genes. These findings suggest model and inference biases toward sparse, modular, hub-containing networks and support aggregation strategies to improve trans-eQTL discovery. Music:Enjoy the music based on this article at the end of the episode. Article title:Regulatory network topology and the genetic architecture of gene expression First author:Aguirre M Journal:Cell Genomics DOI:10.1016/j.xgen.2026.101219 Reference:Aguirre M, Spence JP, Sella G, Pritchard JK. Regulatory network topology and the genetic architecture of gene expression. Cell Genomics. 2026;6:101219. doi:10.1016/j.xgen.2026.101219. License:This episode is based on an open-access article published under the Creative Commons Attribution 4.0 International License (CC BY 4.0) – https://creativecommons.org/licenses/by/4.0/ Support:Base by Base is independent and ad-free — no sponsors, no paywall. If an episode was worth your time, chip in and keep the papers audited and the original songs coming:❤️ Support monthly: https://buy.stripe.com/cNifZhclVebvagk2JDgEg01☕ One-time donation: https://donate.stripe.com/7sY4gz71B2sN3RWac5gEg00 More at basebybase.com On PaperCast Base by Base you'll discover the latest in genomics, functional genomics, structural genomics, and proteomics. Episode link: https://basebybase.com/episodes/grn-topology-genetic-architecture QC:This episode was checked against the original article PDF and publication metadata for the episode release published on 2026-07-22. QC Scope:- article metadata and core scientific claims from the narration- excludes analogies, intro/outro, and music- transcript coverage: Substantively audited sections covering cis- and trans-heritability, the two-part GRN modeling (graph-generating model + SEM), motifs and hubs, modular structure, and limitations of the approach.- transcript topics: cis- and trans-eQTLs and their effect sizes; twin-study heritability and cis/trans fractions; graph-based GRN generation: planted partition model (PPM) and modularity; linear structural equation modeling (SEM) of gene expression; hub regulators and heavy-tailed out-degree distributions; network motifs: triangle and diamond (bi-parallel) motifs QC Summary:- factual score: 10/10- metadata score: 10/10- supported core claims: 6- claims flagged for review: 0- metadata checks passed: 4- metadata issues found: 0 Metadata Audited:- article_doi- article_title- article_journal- license Factual Items Audited:- cis-eQTL median effect size = 0.14; trans-eQTL median e... Chapters (00:00:20) - Understanding the genetic architecture of gene expression(00:02:29) - The hidden genetics of genomics(00:08:34) - The Hidden Networks of Human Biology(00:14:21) - Do regulatory hubs make the human genome fragile?(00:15:54) - Genomic Networks: Less Polygenic, More Pleiotropic(00:22:23) - A network of signals in the dark

Rodriguez-Algarra F et al., Cell Genomics - This episode examines a large-scale analysis of germline ribosomal DNA (rDNA) variation in ~500,000 UK Biobank genomes that identifies high-confidence rDNA SNVs and indels associating with human complex traits, notably a cluster in the 28S expansion segment ES15L linked to body-size measures. Key terms: ribosomal DNA, rRNA variants, UK Biobank, ES15L expansion segment, complex traits. Study Highlights:The authors derived a stringent set of 378 rDNA variants from UK Biobank whole-genome sequencing and tested intragenomic variant frequencies (IGFs) for association with 419 traits. They report 34 associations at global FDR < 0.01 concentrated in the 28S, with a cluster in ES15L associating with height, weight, and related measures. ES15L variant combinations are predicted to alter rRNA secondary structure and are expressed and incorporated into actively translating ribosomes. rDNA copy number and sequence variation influence overlapping traits but act independently. Conclusion:Germline sequence variation within human rDNA is a reproducible and trait-relevant source of genetic variation, with species-specific ES15L variants likely altering rRNA structure and ribosome composition and contributing to variation in body-size and other complex traits. Music:Enjoy the music based on this article at the end of the episode. Article title:Germline sequence variation within the ribosomal DNA is associated with human complex traits First author:Rodriguez-Algarra F Journal:Cell Genomics DOI:10.1016/j.xgen.2026.101213 Reference:Rodriguez-Algarra F., Whittaker E., Cooper M., et al. Germline sequence variation within the ribosomal DNA is associated with human complex traits. Cell Genomics. 2026;6:101213. https://doi.org/10.1016/j.xgen.2026.101213 License:This episode is based on an open-access article published under the Creative Commons Attribution 4.0 International License (CC BY 4.0) – https://creativecommons.org/licenses/by/4.0/ Support:Base by Base is independent and ad-free — no sponsors, no paywall. If an episode was worth your time, chip in and keep the papers audited and the original songs coming:❤️ Support monthly: https://buy.stripe.com/cNifZhclVebvagk2JDgEg01☕ One-time donation: https://donate.stripe.com/7sY4gz71B2sN3RWac5gEg00 More at basebybase.com On PaperCast Base by Base you'll discover the latest in genomics, functional genomics, structural genomics, and proteomics. Episode link: https://basebybase.com/episodes/germline-rdna-variants-human-traits-ep422 QC:This episode was checked against the original article PDF and publication metadata for the episode release published on 2026-07-22. QC Scope:- article metadata and core scientific claims from the narration- excludes analogies, intro/outro, and music- transcript coverage: Audited the transcript for core scientific claims about ES15L rDNA variants: their clustering and trait associations, mechanistic interpretation (RNA structure, translation), evolutionary specificity, and independence from copy number, as presented in the article.- transcript topics: ES15L expansion segment 15L variants in the 28S subunit; Association of ES15L variants with body-size traits (height, weight, birth weight, waist circumference); Evolutionary and primate comparison of ES15L haplotypes; Polysome-seq evidence for ES15L variant expression and incorporation into translating ribosomes; RNA secondary structure modeling of ES15L variants; Independence of ES15L variant effects from total rDNA copy number QC Summary:- factual score: 10/10- metadata score: 10/10- supported core claims: 7- claims flagged for review: 0- metadata checks passed: 4- metadata issues found: 0 Metadata Audited:-... Chapters (00:00:20) - How the genetic variation of the human genome is surprising(00:06:00) - The Hidden DNA fingerprint of humans(00:11:56) - How can ES15L variants affect human genetics?

Schaff DL et al., Cell Genomics - Schaff et al. use multi-treatment clonal tracing combined with single-cell RNA-seq to show that rare, pre-existing transcriptional states in melanoma predict resistance to diverse therapies and that high CD44 marks cells with multi-treatment tolerance. Key terms: melanoma, CD44, clonal tracing, scRNA-seq, drug resistance. Study Highlights:Using high-throughput lentiviral barcoding across six distinct treatments, the authors show that rare melanoma clones can develop resistance to multiple unrelated therapies. Clonal resistance is heritable over roughly six doublings and top resistant clones overlap across treatment pairs. High pre-treatment CD44 expression marks cells that are more likely to resist dabrafenib, trametinib, and hypoxia-mimetic stress, and CD44-high cells show elevated lysosomal activity. Pre-treatment transcriptional programs map to divergent resistant end states, revealing multiple paths to resistance. Conclusion:Pre-existing, heritable transcriptional cell states—including a CD44-high program with elevated lysosomal activity—can predict and underlie multi-treatment resistance in melanoma, and mapping these states can expose distinct routes to treatment failure. Music:Enjoy the music based on this article at the end of the episode. Article title:Pre-existing cell states predict resistance to multiple treatments First author:Schaff DL Journal:Cell Genomics DOI:10.1016/j.xgen.2026.101191 Reference:Schaff DL, White PE, Cote CJ, et al. Pre-existing cell states predict resistance to multiple treatments. Cell Genomics. 2026;6:101191. doi:10.1016/j.xgen.2026.101191 License:This episode is based on an open-access article published under the Creative Commons Attribution 4.0 International License (CC BY 4.0) – https://creativecommons.org/licenses/by/4.0/ Support:Base by Base is independent and ad-free — no sponsors, no paywall. If an episode was worth your time, chip in and keep the papers audited and the original songs coming:❤️ Support monthly: https://buy.stripe.com/cNifZhclVebvagk2JDgEg01☕ One-time donation: https://donate.stripe.com/7sY4gz71B2sN3RWac5gEg00 More at basebybase.com On PaperCast Base by Base you'll discover the latest in genomics, functional genomics, structural genomics, and proteomics. Episode link: https://basebybase.com/episodes/pre-existing-cell-states-predict-resistance QC:This episode was checked against the original article PDF and publication metadata for the episode release published on 2026-07-22. QC Scope:- article metadata and core scientific claims from the narration- excludes analogies, intro/outro, and music- transcript coverage: Audited the core narrative on six-treatment clonal resistance, CD44/FN1 markers, lysosomal mechanism, and CNMF/cNMF-based mapping from pre-treatment states to resistance end-states, plus validation and limitations described in the transcript.- transcript topics: Six-treatment panel design and outcomes in WM989 melanoma cells; Barcoding and clonal tracing methodology; Pre-treatment gene expression states as predictors of resistance; CD44 and FN1 as markers of multi-treatment resistance; lysosomal sequestration mechanism; CNMF/cNMF analysis linking initial states to resistant end states; Differentiated vs mesenchymal initial states and divergent resistance pathways QC Summary:- factual score: 10/10- metadata score: 10/10- supported core claims: 6- claims flagged for review: 0- metadata checks passed: 4- metadata issues found: 0 Metadata Audited:- article_doi- article_title- article_journal- license Factual Items Audited:- Six-treatment panel including two targeted inhibitors (dabrafenib, trametinib), two stressors (CoCl2, acid... Chapters (00:00:20) - What Really Happens to Cancer Resistance?(00:06:15) - The melanoma'specialists'(00:12:37) - Melanoma cell survival: Multiple paths to survival(00:19:04) - Black Skin Cancer: The blueprint for its generalist resistance(00:21:38) - Oh It's Built Before the Battle

Real TD et al., Cell Genomics - This episode examines a long-read sequencing study that resolves the complex NOTCH2NL segmental duplications on human chromosome 1, traces independent duplications in apes, documents gene conversion and structural variation across human haplotypes, and maps paralog-specific regulatory elements using Fiber-seq and long-read transcriptomics in brain organoids. Key terms: NOTCH2NL, segmental duplications, gene conversion, chromatin accessibility, brain organoids. Study Highlights:Using 82 long-read assemblies from humans and apes, the authors show independent NOTCH2NL duplications among great apes with protein-coding human copies emerging ~2.2–3.7 mya. Analysis of 69 validated human haplotypes defines 11 structural configurations, reveals frequent interlocus gene conversion and a new paralog (NOTCH2tv), and finds NOTCH2NLA present in all haplotypes. Fiber-seq and long-read Iso-Seq in dorsal forebrain organoids identify paralog-specific accessible chromatin elements correlated with differential transcript abundance, with NOTCH2 and NOTCH2NLA harboring the most unique regulatory sites. Functional assays indicate NOTCH2tv and NOTCH2NLR produce unstable proteins, while NOTCH2NLB yields a stable product in HEK293 tests. Conclusion:NOTCH2NL loci underwent dynamic duplication, conversion, and regulatory divergence during ape and human evolution; paralog-specific regulatory elements and structural variation likely shaped expression differences while also increasing genomic instability associated with 1q21.1 copy-number disorders. Long-read genomic and epigenomic approaches are essential to resolve these complex regions and their functional implications. Music:Enjoy the music based on this article at the end of the episode. Article title:Genetic diversity and regulatory features of human-specific NOTCH2NL duplications First author:Real TD Journal:Cell Genomics DOI:10.1016/j.xgen.2026.101194 Reference:Real TD, Hebbar P, Yoo D, et al. Genetic diversity and regulatory features of human-specific NOTCH2NL duplications. Cell Genomics. 2026;6:101194. doi:10.1016/j.xgen.2026.101194 License:This episode is based on an open-access article published under the Creative Commons Attribution 4.0 International License (CC BY 4.0) – https://creativecommons.org/licenses/by/4.0/ Support:Base by Base is independent and ad-free — no sponsors, no paywall. If an episode was worth your time, chip in and keep the papers audited and the original songs coming:❤️ Support monthly: https://buy.stripe.com/cNifZhclVebvagk2JDgEg01☕ One-time donation: https://donate.stripe.com/7sY4gz71B2sN3RWac5gEg00 More at basebybase.com On PaperCast Base by Base you'll discover the latest in genomics, functional genomics, structural genomics, and proteomics. Episode link: https://basebybase.com/episodes/notch2nl-duplications-regulation QC:This episode was checked against the original article PDF and publication metadata for the episode release published on 2026-07-21. QC Scope:- article metadata and core scientific claims from the narration- excludes analogies, intro/outro, and music- transcript coverage: Audited portions of the transcript covering NOTCH2NL background, independent ape duplications and human copies, interlocus gene conversion (IGC) and the NOTCH2tv paralog, paralog-specific regulatory landscapes (Fiber-seq/FiberFold), organoid transcriptomics, and protein stability assays.- transcript topics: NOTCH2NL background and brain expansion; Long-read haplotypes and independent duplications; Interlocus gene conversion and NOTCH2tv; Paralog-specific regulatory landscapes and chromatin accessibility; Organoid transcriptomics and protein stability of NOTCH2NL paralogs; Evolutionary timing and limitations of methods QC Summar... Chapters (00:00:16) - Base by Base: Quantifying genomics(00:00:29) - The genetic stutter that built the human brain(00:06:54) - Long-read sequencing of the human genome(00:12:28) - Interlocus gene conversion in the human genome(00:17:57) - Notch2NL and the genetics of the human brain

Hawkins AG et al., Cell Genomics - This episode summarizes Hawkins et al.'s presentation of the Single-Cell Pediatric Cancer Atlas (ScPCA) Portal, a publicly available resource that provides uniformly processed sc/snRNA-seq data and standardized metadata for pediatric tumors. The Portal hosts summarized expression data for over 700 samples across 55 pediatric cancer types, downloadable as SingleCellExperiment or AnnData objects and accompanied by QC reports, automated and curated cell-type annotations, and CNV estimates. The team also introduces scpca-nf, an open-source Nextflow workflow using alevin-fry for efficient, reproducible processing and support for additional modalities such as CITE-seq, cell hashing, bulk RNA-seq, and spatial data. The resource aims to accelerate pediatric cancer research by reducing reprocessing time and enabling cross-sample analyses. Key terms: single-cell RNA-seq, pediatric cancer, data portal, scpca-nf, alevin-fry. Study Highlights:The ScPCA Portal aggregates uniformly processed sc/snRNA-seq data for over 700 samples spanning 55 pediatric cancer types and provides downloads ready for analysis in R and Python. Data are processed with an open-source Nextflow workflow (scpca-nf) that uses alevin-fry for fast quantification and includes QC, dimensionality reduction, consensus cell-type annotations, and inferCNV estimates. The Portal supports multimodal datasets (CITE-seq, HTO, bulk RNA-seq, spatial) and provides merged project objects without batch correction to facilitate user-driven integration. OpenScPCA curated annotations complement automated labels to better distinguish malignant from normal cells. Conclusion:The ScPCA Portal and scpca-nf deliver a modular, openly accessible platform of standardized pediatric tumor single-cell data and tools to speed reproducible discovery and cross-sample comparisons in pediatric cancer research. Music:Enjoy the music based on this article at the end of the episode. Article title:The Single-Cell Pediatric Cancer Atlas: Data portal and open-source tools for single-cell transcriptomics of pediatric tumors First author:Hawkins AG Journal:Cell Genomics DOI:10.1016/j.xgen.2026.101283 Reference:Hawkins AG, Shapiro JA, Spielman SJ, et al. The Single-Cell Pediatric Cancer Atlas: Data portal and open-source tools for single-cell transcriptomics of pediatric tumors. Cell Genomics 6, 101283 (2026). https://doi.org/10.1016/j.xgen.2026.101283 License:This episode is based on an open-access article published under the Creative Commons Attribution 4.0 International License (CC BY 4.0) – https://creativecommons.org/licenses/by/4.0/ Support:Base by Base is independent and ad-free — no sponsors, no paywall. If an episode was worth your time, chip in and keep the papers audited and the original songs coming:❤️ Support monthly: https://buy.stripe.com/cNifZhclVebvagk2JDgEg01☕ One-time donation: https://donate.stripe.com/7sY4gz71B2sN3RWac5gEg00 More at basebybase.com On PaperCast Base by Base you'll discover the latest in genomics, functional genomics, structural genomics, and proteomics. Episode link: https://basebybase.com/episodes/scpca-data-portal-tools-single-cell-pediatric-cancer QC:This episode was checked against the original article PDF and publication metadata for the episode release published on 2026-07-20. QC Scope:- article metadata and core scientific claims from the narration- excludes analogies, intro/outro, and music- transcript coverage: Audited sections include portal overview and dataset scope, data formats and access, SCPCA-nf workflow and quality-control steps, annotation strategy and consensus labeling, CNV inference for malignancy, multimodal data modalities, batch-merging limitations, democratization of access, and future directions.- t...

Felici B et al., Cell Genomics - A concise review of how post-GWAS methods are being used to move from statistical associations to translational insights by integrating drug-target prioritization, single-cell resolution of regulatory mechanisms, and imaging-derived organ phenotypes. Key terms: GWAS, drug discovery, single-cell, imaging genetics, polygenic scores. Study Highlights:This review synthesizes recent advances in translating GWAS findings into therapeutic targets, single-cell resolved mechanisms, and imaging-derived organ phenotypes. It outlines methods including fine-mapping, sc-eQTL mapping, colocalization, imaging GWAS, and Mendelian randomization to link variants to genes, cell types, proteins, and organ function. Case studies show genetics-informed target prioritization and drug repurposing, and the use of imaging IDPs and polygenic scores to refine discovery and prediction. The authors emphasize key challenges such as limited ancestry diversity, small single-cell cohorts, and difficulty inferring causality across biological scales. Conclusion:Integrating GWAS with single-cell and imaging data can accelerate target prioritization and translational discovery, but progress depends on larger, diverse cohorts and improved causal, multi-modal frameworks. Music:Enjoy the music based on this article at the end of the episode. Article title:Translating genome-wide association studies at multiple scales: Drug target prioritization, cellular architectures, and organ imaging First author:Felici B Journal:Cell Genomics DOI:10.1016/j.xgen.2026.101282 Reference:Felici B, Chen S, Yuan M, Jiang X, Ip S, Rudd JHF, Inouye M. Translating genome-wide association studies at multiple scales: Drug target prioritization, cellular architectures, and organ imaging. Cell Genomics. 2026;6:101282. doi:10.1016/j.xgen.2026.101282 License:This episode is based on an open-access article published under the Creative Commons Attribution 4.0 International License (CC BY 4.0) – https://creativecommons.org/licenses/by/4.0/ Support:Base by Base is independent and ad-free — no sponsors, no paywall. If an episode was worth your time, chip in and keep the papers audited and the original songs coming:❤️ Support monthly: https://buy.stripe.com/cNifZhclVebvagk2JDgEg01☕ One-time donation: https://donate.stripe.com/7sY4gz71B2sN3RWac5gEg00 More at basebybase.com On PaperCast Base by Base you'll discover the latest in genomics, functional genomics, structural genomics, and proteomics. Episode link: https://basebybase.com/episodes/translating-gwas-multiple-scales QC:This episode was checked against the original article PDF and publication metadata for the episode release published on 2026-07-18. QC Scope:- article metadata and core scientific claims from the narration- excludes analogies, intro/outro, and music- transcript coverage: Assessed the transcript's coverage of the multi-scale GWAS translation framework, including cellular and imaging scales, concrete gene/target examples, pharmacogenomics, noncoding variants, brain-heart axis, perturb-seq and AI modeling, and limitations; cross-checked against the canonical text for consistency and accur- transcript topics: Multi-scale genomics framework (molecular, cellular, organ); Single-cell omics and scQTL causal inference; Imaging genetics and imaging-derived phenotypes (IDPs); Genetic target examples: PCSK9, ANGPTL3, TYK2, BCL11A; Non-coding regulatory variants and gene regulation; Brain-heart-eye axis and cross-organ pleiotropy QC Summary:- factual score: 10/10- metadata score: 10/10- supported core claims: 8- claims flagged for review: 0- metadata checks passed: 4- metadata issues found: 0 Metadata Audited:- article_doi- article_t...

Garcia-Salinas OI et al., The American Journal of Human Genetics - Garcia-Salinas et al. develop a bioinformatic pipeline to recover early parental postzygotic mutations (PZMs) from standard-depth (~30×) trio WGS and apply it to 12,015 rare-disease trios, producing a catalog of 1,015 high-confidence autosomal parental PZMs and assessing their genomic features and clinical relevance. Key terms: parental mosaicism, postzygotic mutations, trio WGS, mutational spectrum, clinical genetics. Study Highlights:The authors screened unfiltered candidate de novo sites across 12,015 trios and identified 1,015 high-confidence early autosomal parental PZMs with a monomodal blood VAF distribution centered around ~5%. PZMs showed no parental age or sex bias and a distinct substitution spectrum relative to germline DNMs, with enrichment for C>A and T>A and depletion of T>C. Mutational-signature analysis attributed most variants to clock-like signatures SBS1 and SBS5 in similar proportions for PZMs and DNMs. The study recovered clinically relevant missed variants, including likely reportable events in WT1 and DYNC1H1, illustrating diagnostic and recurrence-risk implications. Conclusion:A lightweight annotation applied to standard clinical trio WGS can recover early parental mosaic variants at scale, revealing distinct spectral and genomic patterns and identifying clinically actionable variants that routine pipelines often miss, though detection is constrained to an intermediate VAF window by standard-depth sequencing. Music:Enjoy the music based on this article at the end of the episode. Article title:Landscape of parental postzygotic mutations across >11,000 rare disease trios First author:Garcia-Salinas OI Journal:The American Journal of Human Genetics DOI:10.1016/j.ajhg.2026.06.015 Reference:Garcia-Salinas OI, Andrews KA, Sanghvi R, et al. Landscape of parental postzygotic mutations across >11,000 rare disease trios. The American Journal of Human Genetics. 2026;113:1–9. https://doi.org/10.1016/j.ajhg.2026.06.015 License:This episode is based on an open-access article published under the Creative Commons Attribution 4.0 International License (CC BY 4.0) – https://creativecommons.org/licenses/by/4.0/ Support:Base by Base is independent and ad-free — no sponsors, no paywall. If an episode was worth your time, chip in and keep the papers audited and the original songs coming:❤️ Support monthly: https://buy.stripe.com/cNifZhclVebvagk2JDgEg01☕ One-time donation: https://donate.stripe.com/7sY4gz71B2sN3RWac5gEg00 More at basebybase.com On PaperCast Base by Base you'll discover the latest in genomics, functional genomics, structural genomics, and proteomics. Episode link: https://basebybase.com/episodes/hidden-mosaic-parental-pzms-417 QC:This episode was checked against the original article PDF and publication metadata for the episode release published on 2026-07-18. QC Scope:- article metadata and core scientific claims from the narration- excludes analogies, intro/outro, and music- transcript coverage: Audited the transcript sections describing (a) the concept of parental postzygotic mutations (PZMs) and their discovery from standard-depth trio WGS, (b) VAF distributions and timing, (c) mutational spectra and clock-like signatures SBS1/SBS5, (d) GC-content distribution, (e) clinical implications including WT1 and DYN- transcript topics: Definition and origin of parental postzygotic mutations (PZMs) and mosaicism; Limitations of standard diagnostic pipelines and 30× trio WGS; Bioinformatic pipeline to recover PZMs from DNM candidates; Variant allele fraction (VAF) distribution and timing (approx. third cell division); Mutational spectra and clock-like signatures SBS1/SBS5 in PZMs vs DNMs; GC-content associations and...

Kapoor RR et al., PNAS - A systematic screen of 319 arthropod genomes reveals genes formed by in‑frame fusion of horizontally transferred nonmetazoan sequences with endogenous metazoan regions. Many of these HGT-chimeras are transcribed, conserved, and show coherent domain architectures, implicating them in diverse biological processes. Key terms: horizontal gene transfer, gene fusion, arthropods, novel genes, molecular evolution. Study Highlights:The authors developed an intragenic phylogenetic pipeline and screened 319 high-quality arthropod genomes to identify HGT-chimeras. They report 274 chimeric genes corresponding to 104 independent origination events derived from bacteria, viruses, fungi, and plants. RT-PCR and Sanger sequencing validated contiguous chimeric mRNA expression for 36 of 41 tested chimeras, and molecular evolution analyses show widespread purifying selection and functional domain assembly. Evidence indicates gene duplication and postfusion divergence often accompany chimera formation, suggesting a recurrent route to novel gene functions. Conclusion:Fusion of horizontally acquired sequences with endogenous metazoan sequences has been a recurrent source of novel genes in arthropods, producing expressed, conserved chimeric proteins that likely contribute to organismal biology and evolution. Music:Enjoy the music based on this article at the end of the episode. Article title:Evolutionary innovation through fusion of sequences from across the tree of life First author:Kapoor RR Journal:PNAS DOI:10.1073/pnas.2602557123 Reference:Kapoor RR, Rona I, Extavour CG, et al. Evolutionary innovation through fusion of sequences from across the tree of life. Proc Natl Acad Sci U S A. 2026;123(29):e2602557123. doi:10.1073/pnas.2602557123 License:This episode is based on an open-access article published under the Creative Commons Attribution 4.0 International License (CC BY 4.0) – https://creativecommons.org/licenses/by/4.0/ Support:Base by Base is independent and ad-free — no sponsors, no paywall. If an episode was worth your time, chip in and keep the papers audited and the original songs coming:❤️ Support monthly: https://buy.stripe.com/cNifZhclVebvagk2JDgEg01☕ One-time donation: https://donate.stripe.com/7sY4gz71B2sN3RWac5gEg00 More at basebybase.com On PaperCast Base by Base you'll discover the latest in genomics, functional genomics, structural genomics, and proteomics. Episode link: https://basebybase.com/episodes/hgt-chimeras-fusion-across-tree-of-life QC:This episode was checked against the original article PDF and publication metadata for the episode release published on 2026-07-18. QC Scope:- article metadata and core scientific claims from the narration- excludes analogies, intro/outro, and music- transcript coverage: Audited the transcript's core scientific narrative: definition and existence of HGT-chimeras in arthropods; the 319-genome screen; 274 chimeras in 104 origination events; RT-PCR validation (36/41 across 18 species); evidence of purifying selection (dN/dS < 1) and selected exemplars (shrimp, copepod, damselfly, mosquito- transcript topics: HGT-chimera concept and definition; Scope of arthropod genome survey (319 genomes); Quantitative results (274 chimeras, 104 origination events, 109 HGT intervals); RT-PCR validation and transcriptional evidence (36/41 across 18 species); Purifying selection and dN/dS interpretation; Exemplar cases: shrimp cluster 12, copepod cluster 14, damselfly cluster 41, mosquito cluster 9 QC Summary:- factual score: 10/10- metadata score: 10/10- supported core claims: 4- claims flagged for review: 0- metadata checks passed: 4- metadata issues found: 0 Metadata Audited:- article_doi- article_tit...

PNAS - This episode breaks down a PNAS study that identifies a druggable pocket in the ERG transcription factor PNT domain and describes PBITE-1, a small-molecule probe that binds this pocket to inhibit ERG-driven prostate cancer models. Key terms: ERG, PNT domain, PBITE-1, prostate cancer, small-molecule inhibitor. Study Highlights:The authors show that TMPRSS2:ERG-positive prostate cancer cells remain dependent on ERG for survival and tumor maintenance. A domain-focused DSF screen identified F0341 as a PNT-domain binder and SAR optimization yielded PBITE-1, which engages a solvent-exposed pocket spanning two helices and a flexible loop. PBITE-1 selectively stabilizes ERG in cells, suppresses ERG target genes, reduces proliferation and invasion, induces apoptosis in ERG-positive cell lines and organoids, and triggers tumor cell apoptosis in VCaP xenografts. Conclusion:The ERG N-terminal PNT domain contains a structurally coherent, ligandable pocket; PBITE-1 provides proof-of-concept that ERG can be directly targeted by small molecules, laying groundwork for future ERG-directed inhibitors and degrader strategies for TMPRSS2:ERG-driven cancers. Music:Enjoy the music based on this article at the end of the episode. Article title:A ligandable PNT domain establishes ERG as a directly targetable oncogenic driver in prostate cancer Journal:PNAS DOI:10.1073/pnas.2537437123 Reference:https://doi.org/10.1073/pnas.2537437123 License:This episode is based on an open-access article published under the Creative Commons Attribution 4.0 International License (CC BY 4.0) – https://creativecommons.org/licenses/by/4.0/ Support:Base by Base is independent and ad-free — no sponsors, no paywall. If an episode was worth your time, chip in and keep the papers audited and the original songs coming:❤️ Support monthly: https://buy.stripe.com/cNifZhclVebvagk2JDgEg01☕ One-time donation: https://donate.stripe.com/7sY4gz71B2sN3RWac5gEg00 More at basebybase.com On PaperCast Base by Base you'll discover the latest in genomics, functional genomics, structural genomics, and proteomics. Episode link: https://basebybase.com/episodes/erg-pnt-pbite-1 QC:This episode was checked against the original article PDF and publication metadata for the episode release published on 2026-07-18. QC Scope:- article metadata and core scientific claims from the narration- excludes analogies, intro/outro, and music- transcript coverage: Audited the transcript sections describing ERG dependency in TMPRSS2:ERG-positive prostate cancer, DSF screening and hit identification (F0341), SAR optimization to PBITE-1, binding and target engagement assays (NMR, BLI, CETSA), cellular effects (viability, apoptosis, ERG target gene suppression), organoid and in vivo- transcript topics: ERG dependency in TMPRSS2:ERG-positive prostate cancer; Domain-focused differential scanning fluorimetry (DSF) screen; PBITE-1 discovery and SAR optimization; PBITE-1 binding interface mapping to ERG PNT domain (NMR, docking, H2/H6); Target engagement and cellular effects (CETSA, cell viability, apoptosis, ERG target genes); Organoid and in vivo VCaP xenograft data QC Summary:- factual score: 10/10- metadata score: 10/10- supported core claims: 7- claims flagged for review: 0- metadata checks passed: 4- metadata issues found: 0 Metadata Audited:- article_doi- article_title- article_journal- license Factual Items Audited:- TMPRSS2:ERG fusion occurs in approximately 50% of prostate cancers in patients of European ancestry.- PBITE-1 engages a discrete solvent-exposed surface within the ERG PNT domain, defining a ligand-binding pocket.- PBITE-1 directly binds the ERG PNT domain and stabilizes full-length ERG in cell...

Carballar-Lejarazúa R et al., PNAS (2026) - This episode summarizes a 2-year, 35-generation multireplicate cage trial evaluating three autonomous Cas9/gRNA gene-drive strains (AcTP13, AcTP43 in Anopheles coluzzii; AgTP13 in Anopheles gambiae). The study tracked drive inheritance, cassette integrity, resistance allele emergence, off-target activity, and sustained antiparasite efficacy against Plasmodium falciparum. Key terms: gene drive, Anopheles, Cas9/gRNA, parasite suppression, long-term stability. Study Highlights:Over 2 years (35 generations) triplicate cage trials of three Cas9/gRNA gene-drive strains monitored drive dynamics, cassette integrity, resistance, off-target effects, and parasite suppression. All A. coluzzii replicates achieved rapid fixation and remained stable; two AgTP13 replicates fixed while one accumulated a functional cleavage-resistant allele that reduced drive frequency. Effector transgene sequences and mRNA expression were largely preserved, though one AcTP43 replicate lost a TP10 monomer copy. Parasite challenge assays at low and medium-low gametocytemias showed significant reductions in oocyst and sporozoite prevalence and intensity. Conclusion:Multimetric longitudinal data show that Cas9/gRNA-based population-modifying drives can remain genetically stable and retain antiparasite activity over a 2-year period in laboratory Anopheles populations, with replicate-level resistance emergence underscoring the need for replicated risk assessment and monitoring. Music:Enjoy the music based on this article at the end of the episode. Article title:Long-term stability and performance of Cas9/guide RNA-based gene drives in anopheline mosquitoes First author:Carballar-Lejarazúa R Journal:PNAS (2026) DOI:10.1073/pnas.2605739123 Reference:Carballar-Lejarazúa R, Winokura L, Pham TB, Tushar T, Tao M, Dimopoulos G, James AA, et al. Long-term stability and performance of Cas9/guide RNA-based gene drives in anopheline mosquitoes. PNAS. 2026;123(28):e2605739123. doi:10.1073/pnas.2605739123 License:This episode is based on an open-access article published under the Creative Commons Attribution 4.0 International License (CC BY 4.0) – https://creativecommons.org/licenses/by/4.0/ Support:Base by Base is independent and ad-free — no sponsors, no paywall. If an episode was worth your time, chip in and keep the papers audited and the original songs coming:❤️ Support monthly: https://buy.stripe.com/cNifZhclVebvagk2JDgEg01☕ One-time donation: https://donate.stripe.com/7sY4gz71B2sN3RWac5gEg00 More at basebybase.com On PaperCast Base by Base you'll discover the latest in genomics, functional genomics, structural genomics, and proteomics. Episode link: https://basebybase.com/episodes/414-gene-drive-stability-anopheles QC:This episode was checked against the original article PDF and publication metadata for the episode release published on 2026-07-17. QC Scope:- article metadata and core scientific claims from the narration- excludes analogies, intro/outro, and music- transcript coverage: Audited the transcript sections describing gene-drive mechanism, target-product profile criteria, long-term cage trials, molecular/cassette integrity, resistance emergence, off-target analysis, and parasite-suppression outcomes, with attention to quantitative results and limitations.- transcript topics: Gene-drive mechanism and inheritance (Cas9/gRNA, HDR); Target Product Profile (TPP) criteria for gene-drive systems; Long-term cage trial design (AcTP13, AcTP43 in Anopheles coluzzii; AgTP13 in Anopheles gambiae); Cargo design and tracking markers (CFP, mCherry) and antiparasite effectors (M1C3, M2A10, MultiEff, TP10, EPIP); Resistance emergence at the target site (AgTP13) and 3 bp insertion; Payload stability and tandem repeats (...

Wu J-S et al., PNAS - A PNAS study using smFRET and nano-positioning triangulation maps dynamic positioning of the Rpc34 WH2 domain in yeast Pol III elongation complexes and presents a thiol-capping SPAAC labeling strategy to enable selective site-specific fluorophore attachment. Key terms: RNA polymerase III, Rpc34, winged helix, smFRET, bio-orthogonal labeling. Study Highlights:Using smFRET with ALEX and nano-positioning triangulation, the authors show Rpc34 WH2 occupies three discrete positions across the Pol III DNA-binding cleft and dynamically interconverts among them. A bio-orthogonal labeling workflow—azido-UAA incorporation plus SPAAC with thiol-capping—enabled selective labeling in the cysteine-rich complex. Maf1 binding locks WH2 into the upstream/distal state, validating positional assignments, and HMM dwell-time analysis revealed ordered transitions that proceed through the middle state with characteristic lifetimes. These results indicate Rpc34 WH2 engages the elongation complex via transient, weak DNA and protein contacts, with potential roles in bubble stabilization and rapid reinitiation. Conclusion:Rpc34 WH2 is a mobile, multifunctional cleft-associated module that occupies three ordered positions to transiently engage the Pol III elongation complex, and the thiol-capping SPAAC labeling approach provides a robust route for smFRET studies of large native assemblies. Music:Enjoy the music based on this article at the end of the episode. Article title:Dynamic positioning of Rpc34 winged helix in RNA polymerase III elongation complex for its stability with implications for reinitiation First author:Wu J-S Journal:PNAS DOI:10.1073/pnas.2601775123 Reference:Wu J-S, Chang W-H, et al. Dynamic positioning of Rpc34 winged helix in RNA polymerase III elongation complex for its stability with implications for reinitiation. Proc Natl Acad Sci U S A. 2026;123(27):e2601775123. doi:10.1073/pnas.2601775123 License:This episode is based on an open-access article published under the Creative Commons Attribution 4.0 International License (CC BY 4.0) – https://creativecommons.org/licenses/by/4.0/ Support:Base by Base is independent and ad-free — no sponsors, no paywall. If an episode was worth your time, chip in and keep the papers audited and the original songs coming:❤️ Support monthly: https://buy.stripe.com/cNifZhclVebvagk2JDgEg01☕ One-time donation: https://donate.stripe.com/7sY4gz71B2sN3RWac5gEg00 More at basebybase.com On PaperCast Base by Base you'll discover the latest in genomics, functional genomics, structural genomics, and proteomics. Episode link: https://basebybase.com/episodes/base-by-base-413-rpc34-wh2-pol3-dynamics QC:This episode was checked against the original article PDF and publication metadata for the episode release published on 2026-07-12. QC Scope:- article metadata and core scientific claims from the narration- excludes analogies, intro/outro, and music- transcript coverage: Audited the transcript portions describing Rpc34 WH2 dynamics, labeling strategy, three-state model, Maf1 effects, NPS localization, and rapid reinitiation implications, comparing to the original article.- transcript topics: Rpc34 WH2 dynamics in Pol III elongation complex; smFRET labeling strategy (azido-UAA, SPAAC, MMTS); Maf1 regulation of WH2 mobility; Nano-positioning system (NPS) localization; Three-state model: distal, middle, proximal; Implications for rapid reinitiation and Pol III processivity QC Summary:- factual score: 9/10- metadata score: 10/10- supported core claims: 6- claims flagged for review: 0- metadata checks passed: 4- metadata issues found: 0 Metadata Audited:- article_doi- article_title- article_journal- license...

Scurich N et al., PNAS - A concise breakdown of a PNAS perspective that analyzes forensic proficiency testing practices using the 2023 CTS firearms test as a case study. The authors identify test design and administration flaws—easy items, consensus scoring, handling of inconclusives, nonblind verification, shot‑to‑shot variability, and contextual bias—that undermine claims about examiner accuracy and the utility of reported error rates for courts and laboratories. Key terms: forensic proficiency testing, firearm identification, false positive rate, test design, cognitive bias. Study Highlights:The authors analyze CTS Test 23‑5262 and report a false‑positive rate of about 20% for bullet comparisons, highlighting broader concerns. They identify structural issues in proficiency testing including ceiling effects from easy items, inconsistent scoring of inconclusives, reliance on consensus rather than ground truth, and nonblind verification. The paper argues these features confound examiner performance with test properties, limiting the tests’ ability to estimate operational error rates and inform court decisions. The authors recommend better test design, blind verification, confidence ratings, and use of objective metrics to improve validation and lab practice. Conclusion:Current forensic proficiency testing practices can conceal fundamental weaknesses in examiner performance and test design; systemic, evidence‑based reform is needed to provide courts and laboratories with meaningful estimates of reliability and to reduce risks of wrongful outcomes. Music:Enjoy the music based on this article at the end of the episode. Article title:Assessing the foundations of forensic identification evidence: A critical examination of proficiency test design and results First author:Scurich N Journal:PNAS DOI:10.1073/pnas.2528192123 Reference:Scurich N, Albright TD. Assessing the foundations of forensic identification evidence: A critical examination of proficiency test design and results. PNAS. 2026; Vol.123:e2528192123. doi:10.1073/pnas.2528192123 License:This episode is based on an open-access article published under the Creative Commons Attribution 4.0 International License (CC BY 4.0) – https://creativecommons.org/licenses/by/4.0/ Support:Base by Base is independent and ad-free — no sponsors, no paywall. If an episode was worth your time, chip in and keep the papers audited and the original songs coming:❤️ Support monthly: https://buy.stripe.com/cNifZhclVebvagk2JDgEg01☕ One-time donation: https://donate.stripe.com/7sY4gz71B2sN3RWac5gEg00 More at basebybase.com On PaperCast Base by Base you'll discover the latest in genomics, functional genomics, structural genomics, and proteomics. Episode link: https://basebybase.com/episodes/fault-lines-forensic-proficiency-testing QC:This episode was checked against the original article PDF and publication metadata for the episode release published on 2026-07-12. QC Scope:- article metadata and core scientific claims from the narration- excludes analogies, intro/outro, and music- transcript coverage: Audited the transcript sections describing CTS proficiency testing (Test 23-5262), the reported false-positive rates, consensus scoring and inconclusives, out-of-class eliminations, shot-to-shot variability and reproducibility, contextual bias and NIBIN leads, nonblind verification, signal detection theory as reform, a- transcript topics: CTS proficiency testing overview and purpose; CTS Test 23-5262 design and ground truth; False-positive rate findings (around 20%; 19.2% excluding item 4; 22% at least one false positive); Consensus scoring and handling of inconclusives; Out-of-class eliminations (Item 4) and associated errors; Class characteristics and reproducibility concerns across tes...

Nihata A et al., PNAS - This PNAS study describes the development of EKV, a humanized dividing cell line that propagates bona fide sporadic CJD (sCJD) prions, and the Human Prion Assay (HPA), a cell-based method that quantifies infectivity with sensitivity comparable to transgenic mouse bioassay while enabling rapid therapeutic screening. Key terms: sCJD, EKV cells, Human Prion Assay, prion infectivity, anti-PrP antibody. Study Highlights:The authors engineered EKV cells by reconstituting CAD5 PrP-knockdown cells with human PrP (V129) and iterative single-cell cloning to enrich prion susceptibility. EKV cells propagate de novo infectious sCJD prions that reproduce strain-specific pathology when transmitted to humanized Tg152c mice. The Human Prion Assay (HPA) using EKV cells quantifies sCJD infectivity across a wide dynamic range with sensitivity comparable to mouse bioassay but in weeks rather than years. Persistently infected iEKV clones can be cured by the anti-PrP monoclonal antibody ICSM18, validating the platform for high-throughput therapeutic screens. Conclusion:EKV cells and the HPA provide a renewable, scalable, and faster alternative to animal bioassays for measuring authentic human sCJD infectivity and for screening and validating anti-prion therapeutics, while retaining strain-specific biological properties. Music:Enjoy the music based on this article at the end of the episode. Article title:A scalable, dividing cell model for the robust propagation and quantification of human sporadic Creutzfeldt–Jakob disease prions First author:Nihata A Journal:PNAS DOI:10.1073/pnas.2600341123 Reference:Nihata A, Collinge J, Linehan J, Brandner S, Mead S, Schmidt C, Rayner MLD, Jat PS, Arora P, et al. A scalable, dividing cell model for the robust propagation and quantification of human sporadic Creutzfeldt–Jakob disease prions. PNAS. 2026;123(27):e2600341123. doi:10.1073/pnas.2600341123. License:This episode is based on an open-access article published under the Creative Commons Attribution 4.0 International License (CC BY 4.0) – https://creativecommons.org/licenses/by/4.0/ Support:Base by Base is independent and ad-free — no sponsors, no paywall. If an episode was worth your time, chip in and keep the papers audited and the original songs coming:❤️ Support monthly: https://buy.stripe.com/cNifZhclVebvagk2JDgEg01☕ One-time donation: https://donate.stripe.com/7sY4gz71B2sN3RWac5gEg00 More at basebybase.com On PaperCast Base by Base you'll discover the latest in genomics, functional genomics, structural genomics, and proteomics. Episode link: https://basebybase.com/episodes/ekv-human-prion-assay QC:This episode was checked against the original article PDF and publication metadata for the episode release published on 2026-07-09. QC Scope:- article metadata and core scientific claims from the narration- excludes analogies, intro/outro, and music- transcript coverage: Substantive audit focused on EKV cell development and validation, in vitro propagation of human sCJD prions, HPA implementation and benchmarking against mouse bioassay, drug-screening demonstration, and documented limitations (codon 129 mismatch, occult infectivity).- transcript topics: Prion biology and strain concepts (PRNP codon 129 polymorphism); Historical barriers to human prion culture and need for cell-based infectivity assays; Engineering EKV cells: CAD5-KDB3, human PrP V129, mouse signal peptide; Iterative single-cell cloning and enrichment to EKV; Infectivity validation via transmission to Tg152c mice; Development and validation of the Human Prion Assay (HPA) QC Summary:- factual score: 10/10- metadata score: 10/10- supported core claims: 6- claims flagged for review: 0- metadata checks passed: 4-...

Abson KL et al., PNAS - A cross-species synthesis and theory paper showing that simple molecular diversity metrics poorly predict short-term adaptive potential. The authors compiled >2,100 quantitative genetics estimates (evolvability and heritability) across ~193 eukaryotic species and compared them to nucleotide diversity (π) and microsatellite heterozygosity (He). They find nucleotide diversity explains only ~1.1% of interspecific variation in evolvability and that doubling π corresponds to a modest ~11.7% increase in evolvability. Theoretical models indicate this weak relationship is expected when trait variance is shaped by stabilizing selection, mutation rates, and effective population size dynamics. Key terms: nucleotide diversity, evolvability, adaptive potential, conservation genetics, microsatellites. Study Highlights:The authors compiled 2,113 evolvability estimates across 193 eukaryotic species and matched these to measures of nucleotide diversity (π) and microsatellite heterozygosity (He). They found no meaningful association between ln(IA) (evolvability) and ln(π): π explained ~1.1% of interspecific variation and doubling π predicts only an ~11.7% increase in evolvability. Microsatellite and nucleotide diversity were uncorrelated across species, and both molecular measures were weak predictors of quantitative genetic variation. Theoretical mutation–selection–drift models show weak associations are expected under stabilizing selection and when VA depends more on mutation rate and selection than on neutral diversity. Conclusion:Simple, genome-wide molecular diversity metrics (π, He) are poor predictors of short-term adaptive potential (evolvability); conservation assessments should not rely on these alone and should incorporate trait-based or functionally informed genomic data. Music:Enjoy the music based on this article at the end of the episode. Article title:Nucleotide diversity is a poor predictor of short-term adaptive potential First author:Abson KL Journal:PNAS DOI:10.1073/pnas.2536181123 Reference:Abson KL, Zijmers L, Mittell EA, Young EA, Postma E, Eyre-Walker A, Hadfield JD. Nucleotide diversity is a poor predictor of short-term adaptive potential. Proc Natl Acad Sci U S A. 2026;123(27):e2536181123. doi:10.1073/pnas.2536181123 License:This episode is based on an open-access article published under the Creative Commons Attribution 4.0 International License (CC BY 4.0) – https://creativecommons.org/licenses/by/4.0/ Support:Base by Base is independent and ad-free — no sponsors, no paywall. If an episode was worth your time, chip in and keep the papers audited and the original songs coming:❤️ Support monthly: https://buy.stripe.com/cNifZhclVebvagk2JDgEg01☕ One-time donation: https://donate.stripe.com/7sY4gz71B2sN3RWac5gEg00 More at basebybase.com On PaperCast Base by Base you'll discover the latest in genomics, functional genomics, structural genomics, and proteomics. Episode link: https://basebybase.com/episodes/nucleotide-diversity-poor-predictor-adaptive-potential QC:This episode was checked against the original article PDF and publication metadata for the episode release published on 2026-07-08. QC Scope:- article metadata and core scientific claims from the narration- excludes analogies, intro/outro, and music- transcript coverage: Audited the transcript's coverage of core scientific claims: relationship between π and IA, the π vs He relationship, functional variation (πN/πS), the theoretical basis (stabilizing selection), and conservation implications/policy directions.- transcript topics: Adaptive potential and evolvability (IA) concept; Nucleotide diversity (π) as predictor of evolvability; Microsatellite diversity (He) and its relation to π and IA; Theoretical mutation–selection...