线粒体的再分配组织了免疫抑制瘤生态系统
Azusa Terasaki1, Alexis T Weiner1, Yuhao Tan2
1Department of Pathology, Stanford University, Stanford, CA 94305, USA.
bioRxiv : the preprint server for biology
|November 26, 2025
概括
癌细胞通过与免疫细胞共享线粒体来维持瘤生长,并重新编程它们以抑制抗瘤反应. 破坏这种线粒体交换会损害瘤的进展和免疫力.
科学领域:
- 在瘤学瘤学.
- 细胞生物学 细胞生物学
- 免疫学 免疫学 免疫学
背景情况:
- 瘤微环境通常具有敌对的条件,限制细胞呼吸.
- 线粒体代谢对于瘤生长和免疫抑制细胞功能至关重要.
研究的目的:
- 为了研究瘤生态系统如何保持线粒体输出,尽管敌对的条件.
- 阐明细胞间线粒体再分配在癌症中的作用.
主要方法:
- 利用线粒体记者系统来追踪线粒体.
- 分析了癌细胞与宿主衍生的线粒体和免疫细胞的相互作用.
主要成果:
- 癌细胞作为细胞间线粒体再分配的枢纽,进口和转发线粒体.
- 线粒体再分配将免疫细胞重新编程成抑制状态 (中性粒细胞,巨细胞,CD4+ T细胞),但会导致CD8+ T细胞耗尽.
- 在癌细胞中,进口的线粒体促进生物合成输出和器官修复.
结论:
- 癌细胞调节线粒体的再分配,以增强其代谢弹性并抑制抗瘤免疫力.
- 破坏线粒体再分配会导致免疫抑制瘤生态系统崩,并阻碍瘤生长.
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