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938-C9orf72基因突变对肌萎缩侧索硬化症中小胶质细胞响应的影响 episode artwork

EPISODE · May 9, 2026 · 19 MIN

938-C9orf72基因突变对肌萎缩侧索硬化症中小胶质细胞响应的影响

from 聊聊Sci

这篇研究通过单细胞测序技术,对比分析了散发性肌萎缩侧索硬化症 (sALS) 与携带 C9orf72 基因突变 (C9-ALS) 患者的神经系统差异。研究证实 C9orf72 基因在小胶质细胞中高度表达,而该基因的致病性扩增会导致其功能缺失。与散发性患者显著的免疫激活状态不同,C9-ALS 小胶质细胞表现出明显的反应迟钝,且伴随内溶酶体通路的代谢功能障碍。这种免疫反应的缺失在人源化小胶质细胞小鼠模型及 iPSC 诱导细胞中得到了进一步验证。此外,研究还揭示了 C9-ALS 患者星形胶质细胞的激活同样受到抑制,并描绘了两类细胞间的信号通讯异常图谱。这些发现表明不同类型的 ALS 在分子细胞层面存在本质区别,为实现精准医疗和患者分流提供了关键依据。 References: Masrori P, Bijnens B, Fumagalli L, et al. C9orf72 hexanucleotide repeat expansions impair microglial response in ALS[J]. Nature Neuroscience, 2025: 1-14. 前往小宇宙评论区与主播互动

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938-C9orf72基因突变对肌萎缩侧索硬化症中小胶质细胞响应的影响

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