EPISODE · Jul 22, 2026 · 25 MIN
1316-Arc介导细胞外囊泡转运Tau蛋白的研究
from 聊聊Sci
这项研究揭示了神经元基因 Arc 在阿尔茨海默病中介导 Tau 蛋白 跨细胞传播的关键机制。研究发现,Arc 蛋白能通过直接的分子相互作用,将致病性 Tau 蛋白 包装进细胞外囊泡(EVs)中并释放到胞外。实验证明,缺失 Arc 会显著阻碍 Tau 在神经元间的传递,并导致有毒蛋白在原细胞内堆积,从而加剧早期细胞死亡。这种基于病毒样衣壳形成的转运机制,在小鼠模型和人类患者脑部样本中均得到了验证。该发现不仅解释了 Tau 蛋白 病理扩散的分子路径,也为开发防治相关神经退行性疾病的新疗法提供了重要靶点。References:Tyagi M, de Hoog E, Grega M, et al. Arc mediates intercellular tau transmission via extracellular vesicles[J]. Cell, 2026.前往小宇宙评论区与主播互动
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1316-Arc介导细胞外囊泡转运Tau蛋白的研究
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