EPISODE · May 4, 2026 · 24 MIN
897-脑部细胞特异性3D基因组组织与转录调控研究
from 聊聊Sci
该研究利用MERFISH成像技术，揭示了小鼠大脑中不同细胞类型在三维基因组结构与转录调控方面的显著差异。研究发现，细胞核的大小和染色质的物理包装与细胞的总体转录活性密切相关，神经元相较于非神经元细胞展现出更强的A/B区室隔离。局部染色质环境的改变直接影响细胞类型特异性基因及超级增强子的表达。此外，研究证实了MeCP2蛋白在维持染色质区室化中的关键作用。实验表明，MeCP2主要通过结合甲基化DNA（特别是mCAC），以核径向位置依赖的方式调节基因转录，这一发现为理解雷特综合征等神经发育障碍提供了重要的结构生物学视角。References:Liu S, Wang C Y, Zheng P, et al. Cell type–specific 3D-genome organization and transcription regulation in the brain[J]. Science Advances, 2025, 11(9): eadv2067.前往小宇宙评论区与主播互动
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897-脑部细胞特异性3D基因组组织与转录调控研究
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