1197-核蛋白质组揭示MAP1B调控脑发育与疾病 episode artwork

EPISODE · Jun 28, 2026 · 18 MIN

1197-核蛋白质组揭示MAP1B调控脑发育与疾病

from 聊聊Sci

这篇研究文章揭示了神经干细胞 (NSCs) 细胞核内存在丰富的细胞骨架蛋白,并重点探讨了微管相关蛋白 1B (MAP1B) 在大脑发育中的双重调控作用。研究发现,MAP1B 能在细胞质与细胞核之间穿梭:其在细胞质中促进神经元分化,而在细胞核内则通过与 BAF 染色质重塑复合物结合来维持干细胞状态。实验表明,抑制 MAP1B 会导致神经干细胞分化减缓,并产生一种具有迁移和发育缺陷的异常神经元群体,这与人类脑室旁异位症 (PH) 的病理特征高度相似。此外,研究证实与疾病相关的 MAP1B 突变会导致其在核内异常富集,进而干扰正常的皮层定位。该发现重新定义了细胞骨架蛋白的功能范畴,证明其能直接参与转录调控并决定细胞命运,为理解神经发育障碍的病因提供了全新视角。References:Merino F, Miranda L, Kumar A, et al. Nuclear proteome reveals microtubule-associated protein regulating fate and disease[J]. Cell, 2026.前往小宇宙评论区与主播互动

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1197-核蛋白质组揭示MAP1B调控脑发育与疾病

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