1369-4D Molecular Mapping of Hair Follicle Organogenesis

The paper introduces 3DEEP, a novel tissue-clearing and spatial transcriptomics method designed to map the complex four-dimensional development of organs. By removing genomic DNA to improve probe penetration, researchers successfully visualized hundreds of hair follicles within intact neonatal mouse skin at a depth of 400 microns. This approach allowed the team to reconstruct a chronological molecular map of organogenesis from a single spatial snapshot, identifying three distinct developmental stages. Their findings reveal the intricate choreography of stem cell stratification and the structural transformations necessary for hair canal formation. Furthermore, the study compares healthy follicles with those of genetically hairless nude mice, uncovering that developmental delays and instability occur long before physical defects become visible. Ultimately, the sources demonstrate how thick-tissue profiling can uncover hidden biological dynamics that traditional two-dimensional methods often miss.References:Asami S, Yin C, Fan J, et al. Four-dimensional molecular mapping from a spatial snapshot reveals the dynamics of hair follicle organogenesis[J]. Cell, 2026.前往小宇宙评论区与主播互动