组织居民耗尽和记忆CD8+ T细胞具有不同的本体,功能和疾病中的作用
Simone L Park1,2, Mark M Painter3,4, Sasikanth Manne3,4
1Department of Systems Pharmacology and Translational Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA. simone.park@pennmedicine.upenn.edu.
Nature immunology
|December 30, 2025
概括
慢性抗原刺激会产生独特的组织内耗尽的CD8+ T (TR-TEX) 细胞,与记忆 (TRM) 细胞不同. TR-TEX细胞独特地预测患者的免疫检查点阻塞反应.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 慢性疾病的发病因子 慢性疾病的发病因子
背景情况:
- 共同表达居住和疲劳标记的CD8+T细胞与慢性疾病的结果有关.
- 这些细胞,常规组织内存细胞 (TRM) 和耗尽的CD8+ T (TEX) 细胞之间的确切关系仍未确定.
研究的目的:
- 阐明在慢性抗原暴露环境中,组织居民耗尽的TEX (TR-TEX) 细胞与TRM细胞的不同发育途径和功能作用.
- 在免疫检查点阻塞疗法中研究TR-TEX细胞的转录调节和治疗潜力.
主要方法:
- 在慢性抗原刺激下对T细胞种群的比较分析与抗原清除.
- 转录分析,以确定细胞状态特定的调节网络,包括毒素依赖.
- 在体内研究评估T细胞对PD-1通路抑制的反应.
主要成果:
- 慢性抗原刺激产生TR-TEX细胞,这些细胞在转录上与TRM细胞不同,并且需要Tox进行住院编程.
- 在慢性抗原暴露下,TRM细胞可以分化为TEX细胞,但TEX细胞在抗原撤出后不会恢复为TRM细胞.
- TR-TEX细胞的存在选择性地与患者对免疫检查点阻塞的反应相关,而这些细胞,而不是TRM细胞,在体内对PD-1抑制作出反应.
结论:
- TR-TEX和TRM细胞代表发育上不同的CD8+T细胞状态,共享组织居住,但在慢性疾病期间功能不同.
- TR-TEX细胞是疾病控制中的关键参与者,并代表免疫检查点阻塞的潜在生物标志物和治疗标.
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