EPISODE · Aug 31, 2026 · 17 MIN
1519-神经系统通信的第四支柱：隧道纳米管
from 聊聊Sci
这篇综述文章探讨了隧道纳米管 (TNTs) 这一新兴的脑连接机制，将其视为除突触、间隙连接和体液信号外的“第四大支柱”。这些由肌动蛋白组成的超细管道能在远距离细胞间建立直接的细胞质交换，支持线粒体、溶酶体及各种分子的运输。研究表明，TNTs 在大脑发育、代谢支持和免疫监测中发挥着生理作用，但也可被病毒和致病蛋白利用进行病理扩散。作者指出，TNTs 构成了神经网络中动态且可诱导的连接层，在压力环境下能通过资源再分配维持稳态。尽管目前在活体鉴定和分子标记方面仍面临挑战，但该领域的发展正促使人们重新审视神经系统的组织模式。这种新型通信方式可能为神经退行性疾病的治疗提供从“细胞自主”转向“网络集成”的全新视角。References:Budinger D, Heneka M T. Tunneling nanotubes in the nervous system: The fourth pillar of brain connectivity[J]. Neuron, 2026.前往小宇宙评论区与主播互动
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1519-神经系统通信的第四支柱：隧道纳米管
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