781-复杂性状变异的单核苷酸分辨率功能解析 episode artwork

EPISODE · Apr 12, 2026 · 25 MIN

781-复杂性状变异的单核苷酸分辨率功能解析

from 聊聊Sci

这篇研究通过大规模平行报告分析(MPRA),对超过22万个与人类复杂性状和疾病相关的非编码遗传变异进行了功能解析。研究者在五种不同细胞系中鉴定出13,121个具有调控活性的性状相关调控变异(TARVs),显著提升了识别因果变异的精准度。通过饱和突变技术,研究揭示了即使在缺乏已知转录因子基序的区域,变异也能通过隐匿机制影响基因表达。此外,该研究还探讨了调控上位性,证明了同一调控元件内多个变异如何通过非加性协同作用重塑遗传风险。总而言之,这项工作为理解基因组调控语法提供了系统的实验图谱,填补了统计学关联与生物学功能之间的鸿沟。References: Siraj L, Castro R I, Dewey H B, et al. Functional dissection of complex trait variants at single-nucleotide resolution[J]. Nature, 2026: 1-11.前往小宇宙评论区与主播互动

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781-复杂性状变异的单核苷酸分辨率功能解析

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