Treg-γδ T 细胞轴在肝癌发生过程中决定性变态
Qing Liang1, Qian Zhang1, Wei Zhang2
1State Key Laboratory of Vaccines for Infectious Diseases, Xiang An Biomedicine Laboratory, Cancer Research Center, School of Medicine, Faculty of Medicine and Life Sciences, Xiamen University, Xiamen, Fujian, China.
Nature communications
|February 11, 2026
概括
男性性激素驱动肝癌 (HCC) 中的调节性T细胞 (Treg) 积累. 雄激素促进Treg招募并抑制抗瘤免疫力,特别是影响马三角T细胞,导致男性HCC的免疫逃避.
科学领域:
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
- 内分泌学 在内分泌学.
背景情况:
- 肝细胞癌 (HCC) 在发病率和死亡率上表现出性质变态.
- 性激素与肝癌发病中男性占主导地位有关.
- 调节性T细胞 (Tregs) 在瘤微环境中的免疫抑制中起着至关重要的作用.
研究的目的:
- 调查性二态性在调节性T细胞 (Treg) 透在肝细胞癌 (HCC) 中的作用.
- 阐明性激素影响Treg招募和HCC中的功能机制.
- 了解Tregs如何调节HCC中的抗瘤免疫反应.
主要方法:
- 在雄性和雌性HCC小鼠模型和患者中对Treg种群的比较分析.
- 研究雄激素信号通路,包括NFκB激活和Ccl2促进体结合.
- 在Treg招聘中评估Ccl2-Ccr2轴.
- 对Treg介导的γδT细胞和CD8+T细胞抑制的评估.
- 对缺氧诱导的细胞外囊泡 (EV) -S100a4分泌物的分析及其对γδ T细胞激活的影响.
主要成果:
- 在男性的HCC瘤中,与女性相比,Tregs的丰富度显著更高.
- 雄激素激活NFκB通路,增强Ccl2的产生,并通过Ccl2-Ccr2轴促进Treg的招募.
- Tregs主要通过抑制 γδ T 细胞而不是 CD8+ T 细胞来抑制抗瘤免疫力.
- 缺氧诱导含有S100a4的Treg衍生的EVs,这在表观遗传上抑制了γδT细胞激活.
结论:
- 在HCC中的性二态性包括由雄激素信号驱动的性别特异性Treg透.
- 依赖于雄激素的Ccl2生产通过抑制γδT细胞活性来促进免疫逃避.
- 受低氧和EVs影响的Treg介导的γδT细胞抑制是男性HCC免疫逃避的关键机制.
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