肺组织内存T细胞通过IL-10调节先天性免疫来优化保护
Alexander Y Yang1, Julia Davis-Porada1,2, Daniel H Paik2
1Department of Microbiology and Immunology, Columbia University Irving Medical Center, New York, NY, USA.
The Journal of experimental medicine
|October 13, 2025
概括
肺部的组织内存T细胞 (TRM) 在二次流感感染期间减轻炎症. 这些TRM细胞产生IL-10,它调节巨细胞的反应并限制肺损伤.
科学领域:
- 免疫学 免疫学 免疫学
- 呼吸系统医学 呼吸系统医学
- 传染性疾病 传染性疾病
背景情况:
- 呼吸道病毒感染诱导肺组织内存T细胞 (TRM) 进行增强的保护.
- 肺部TRM调节二次免疫反应的确切机制尚未完全理解.
研究的目的:
- 研究肺TRM在调节二次流感感染期间巨细胞反应中的作用.
- 阐明TRM细胞产生的IL-10在调节炎症和组织损伤方面的贡献.
主要方法:
- 采用了异型亚型流感感染的小鼠模型.
- 采用了T细胞枯竭实验和IL-10信号抑制.
- 分析了巨细胞两极分化和炎症性细胞因子的产生.
- 分离和特征的人类流感特异性TRM细胞.
主要成果:
- 肺部TRM细胞被确定为二次感染期间的主要IL-10早期生产者.
- 抑制IL-10信号传递导致了巨细胞介导炎症,发病率和肺病理的增加.
- 肺TRM直接调节了肺巨细胞的反应和两极分化.
- 通过肺内存CD8+T细胞,IL-10增强了IFN-γ的产生.
- 人类TRM细胞表现出类似的IL-10表达和增强的效应器功能.
结论:
- 肺部TRM在二次流感反应中起着双重作用:增加病毒清除和抑制炎症.
- 由TRM产生的IL-10对于减轻巨细胞驱动的炎症和限制组织损伤至关重要.
- 这些发现凸显了TRM介导的IL-10作为肺部保护性免疫的关键调节者.
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