抗原特异性断层CD8+ T细胞包括独特的效应器记忆和组织内存细胞
Shweta Mahajan1,2, Aria Alexander1,2, Zachary Koenig1,2
1Immunology Graduate Program, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA.
JCI insight
|September 8, 2023
概括
孕产妇的CD8+ T细胞包括独特的组织内存细胞 (Trm) 和共享效应记忆细胞 (Tem). 胎儿特异的Trm细胞表现出抑制和细胞毒性,挑战了在母胎界面抑制胎儿反应的概念.
科学领域:
- 免疫学 免疫学 免疫学
- 生殖免疫学 生殖免疫学
- 母胎界面免疫学 母胎界面免疫学
背景情况:
- 母亲的CD8+ T细胞在母胎界面平衡免疫力和耐受性.
- 果性CD8+ T细胞是具有混合功能状态的分化记忆细胞.
- 抗原特异性和十足的CD8+T细胞功能之间的关系尚不清楚.
- 在决定中,独特的组织居民记忆T细胞 (Trm) 与共享效应体记忆T细胞 (Tem) 的存在是未知的.
研究的目的:
- 描述人体细胞中CD8+ T细胞的不同种群的特征.
- 根据抗原特异性,研究状CD8+T细胞的功能表型.
- 为了确定CD8+ T细胞是否包括独特的Trm种群或共享的Tem种群.
主要方法:
- 使用高维流细胞测量来分析来自母亲的决定性和外围血液中的CD8+T细胞.
- 根据它们对各种标记物的表达,将叶和血液CD8+T细胞种群进行了比较.
- 评估了功能特征,包括激活,抑制和细胞毒性.
主要成果:
- 两种Tem种群被确定为血液和决定之间共享的.
- 发现了9个独特的Trm星团,是唯一的决定,被发现.
- 胎儿和病毒特异的状CD8+Trm细胞表现出类似的抑制和细胞毒性.
- 在胎儿特异性和病毒特异性Trm细胞之间的激活,抑制或细胞毒性分子的表达中没有观察到显著的差异.
结论:
- 人类的决定体内含有独特的Trm CD8+ T细胞种群,与外周血液Tem细胞不同.
- 胚胎抗原特异性CD8+Trm细胞可以表现出细胞毒性和抑制功能.
- 这些发现表明,并非所有的胎儿特异性免疫反应都被抑制在母胎界面.
- 了解状CD8+T细胞的特异性和居住性对于理解胎盘炎症和先天性感染至关重要.
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