EPISODE · May 31, 2026 · 22 MIN
1056-纤毛机械力调控神经干细胞静息态的机制
from 聊聊Sci
这篇来自《Neuron》的研究论文揭示了室管膜细胞（EC）纤毛摆动如何通过机械力调节成年神经干细胞（NSC）的静息与激活状态。研究者通过磁珠抗体和磁场技术手段，发现抑制纤毛摆动会迅速触发神经干细胞的激活与蛋白质翻译增强。这种机械感应过程是由神经干细胞上的PKD1/2和TRPM3受体介导的，它们将物理刺激转化为维持干细胞静息所需的钙离子信号。实验证明，缺失这些受体会模拟纤毛停搏的效果导致干细胞异常增殖，而药理学激活TRPM3则能抵消因摆动停止引发的激活。该发现确立了室管膜生态位中机械动力学对脑内干细胞稳态调控的关键作用。References:Bressan C, Gengatharan A, Rodriguez-Aller R, et al. Cilia beating of ependymal cells regulates adult neural stem cell quiescence via mechanical forces mediated by PKD1/2-TRPM3[J]. Neuron, 2026.前往小宇宙评论区与主播互动
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1056-纤毛机械力调控神经干细胞静息态的机制
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