1208-KAT7介导的小胶质细胞线粒体免疫与阿尔茨海默病 episode artwork

EPISODE · Jun 30, 2026 · 22 MIN

1208-KAT7介导的小胶质细胞线粒体免疫与阿尔茨海默病

from 聊聊Sci

这项研究揭示了KAT7蛋白通过表观遗传机制驱动阿尔茨海默病(AD)病理进程的新机理。研究发现,在患者及模型小鼠的小胶质细胞中,KAT7表达显著升高,并通过增强H3K14ac乙酰化水平激活Cmpk2基因的转录。这一过程加速了线粒体DNA(mtDNA)的合成与释放,进而触发cGAS-STING等免疫通路,维持神经炎症环境。实验证明,特异性剔除小胶质细胞中的Kat7或使用小分子抑制剂WM-3835,能有效减少β-淀粉样蛋白(Aβ)沉积。此外,抑制该靶点还成功修复了小鼠的突触可塑性,并显著改善了其认知障碍。该发现为针对表观遗传-线粒体免疫轴开发阿尔茨海默病新疗法提供了重要依据。References:Liu Y, Ye Y, Fan M, et al. Epigenetic control of microglial mitochondrial immunity by KAT7 drives Alzheimer’s disease pathogenesis[J]. Neuron, 2026.前往小宇宙评论区与主播互动

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1208-KAT7介导的小胶质细胞线粒体免疫与阿尔茨海默病

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