IL-10抑制抗瘤免疫力,并通过PD-L1诱导促进肝转移
Ahmad Mustafa Shiri1, Tao Zhang1, Tanja Bedke1
1Section of Molecular Immunology and Gastroenterology, I. Department of Medicine, University Medical Center Hamburg-Eppendorf, 20246, Hamburg, Germany; Hamburg Center for Translational Immunology (HCTI), University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany.
Journal of hepatology
|December 31, 2023
概括
调节性T细胞 (Tregs) 通过产生IL-10驱动肝转移,该IL-10可在单细胞上调节PD-L1,从而阻碍抗瘤免疫力. 向IL-10可能会改善结直肠癌肝脏转移的免疫疗法.
科学领域:
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
- 癌症转移 癌症转移
背景情况:
- 肝转移很常见,并产生免疫抑制的微环境,降低免疫治疗的疗效.
- 介质素-10 (IL-10) 在转移期间与免疫抑制有关.
研究的目的:
- 研究IL-10在肝转移形成中的作用.
- 确定调节IL-10如何影响体内免疫疗法的疗效.
主要方法:
- 在小鼠中诱导肝转移使用癌细胞或有机体.
- 利用IL-10和IL-10受体α缺乏的小鼠,包括细胞类型特定的缺失.
- 采用了PD-L1缺乏的小鼠和流动细胞测量来分析IL-10对PD-L1.1的影响.
主要成果:
- 针对肝转移的IL-10缺乏或封锁保护小鼠.
- 调节性T细胞 (Tregs) 被确定为肝转移中的IL-10的主要来源.
- IL-10通过Tregs (自细胞) 放大了自身的产生,并在单细胞上诱导了PD-L1,从而损害了CD8+ T细胞的抗瘤活性.
结论:
- 来自Treg的IL-10通过对单细胞PD-L1进行上调来促进肝脏转移,从而抑制抗瘤免疫力.
- 这些发现支持针对IL-10改善结直肠癌肝脏转移的免疫疗法.
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