264-小鼠全脑单细胞染色质可及性图谱 episode artwork

EPISODE · Nov 25, 2025 · 17 MIN

264-小鼠全脑单细胞染色质可及性图谱

from 聊聊Sci

这篇文章概述了一项关于成年小鼠大脑中染色质可及性的综合单细胞分析研究。研究人员通过分析来自117个解剖区域的230万个脑细胞,构建了一个包含约100万个候选顺式调控DNA元件(cCREs)的图谱,极大地扩展了现有的注释。该研究详细描述了1,482个不同的脑细胞群体的基因调控程序,并结合单细胞RNA测序数据,推断了超过260个亚类的基因调控网络(GRNs)。值得注意的是,研究发现小鼠特有的cCREs,尤其是在皮层兴奋性神经元中发现的cCREs,富含转座元件,暗示了它们在神经元多样性演化中的潜在作用。此外,研究还开发了基于深度学习的模型,能够仅通过DNA序列预测不同脑细胞类型中的染色质可及性活动,并且该模型在预测人类大脑细胞中的cCREs方面表现出跨物种的泛化能力。References: Zu S, Li Y E, Wang K, et al. Single-cell analysis of chromatin accessibility in the adult mouse brain[J]. Nature, 2023, 624(7991): 378-389.前往小宇宙评论区与主播互动

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264-小鼠全脑单细胞染色质可及性图谱

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