925-线粒体代谢调控树突状细胞免疫应答 episode artwork

EPISODE · May 8, 2026 · 20 MIN

925-线粒体代谢调控树突状细胞免疫应答

from 聊聊Sci

该研究揭示了线粒体代谢,特别是电子传递链(ETC),在调节cDC1型树突状细胞免疫反应性中的核心作用。研究发现,cDC1通过高效的氧化磷酸化来维持细胞内的氧化还原与代谢平衡,这不仅为细胞供能,更重要的是维持了关键免疫基因在稳态下的DNA甲基化水平。当复合物III功能受损时,会导致代谢紊乱并诱发DNA高甲基化,从而抑制由PU.1和AP-1转录因子控制的早期刺激响应基因的表达。这种代谢障碍会显著削弱cDC1激活T细胞和产生抗肿瘤免疫的能力,而通过表达替代氧化酶(AOX)恢复电子流或激活TET2去甲基化酶,可以有效修复其功能。总之,该成果证实了线粒体通过精细调控表观遗传状态,使cDC1处于一种随时准备应对免疫挑战的“预激”状态。References:Heras-Murillo I, Mañanes D, Calafell-Segura J, et al. Mitochondrial metabolism regulates the immunogenic responsiveness of dendritic cells[J]. Cell Metabolism, 2026.前往小宇宙评论区与主播互动

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925-线粒体代谢调控树突状细胞免疫应答

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