1154-I型干扰素驱动中枢神经系统对β淀粉样蛋白的T细胞应答 episode artwork

EPISODE · Jun 19, 2026 · 21 MIN

1154-I型干扰素驱动中枢神经系统对β淀粉样蛋白的T细胞应答

from 聊聊Sci

这项研究通过对APP23转基因小鼠模型和人类阿尔茨海默病患者脑组织进行单细胞转录组及空间分析,揭示了淀粉样蛋白病理中免疫反应的动态演变。研究发现,随着病情从早期向晚期发展,神经炎症的驱动者由小胶质细胞转变为T细胞,尤其是CD8⁺ T细胞在β-淀粉样蛋白斑块周围显著聚集。一个特定的CD8⁺ T细胞亚群通过表达I型干扰素刺激基因,释放趋化因子CXCL10,从而诱导更多效应T细胞浸润。这些聚集在斑块周边的T细胞呈现出过度激活及随之而来的免疫耗竭特征。该成果强调了适应性免疫系统在神经退行性疾病中的关键作用,并为针对性治疗手段的开发提供了新视角。References:Michel, J.J., Sanghvi, K., Rosenbauer, J. et al. Type I interferon drives T cell responses to amyloid beta in the central nervous system. Nat Commun 17, 3737 (2026). https://doi.org/10.1038/s41467-026-72262-6前往小宇宙评论区与主播互动

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1154-I型干扰素驱动中枢神经系统对β淀粉样蛋白的T细胞应答

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