单细胞转录组学揭示了不同成熟阶段和人类胸膜不变天然杀手T细胞的亚系承诺
Kristina Maas-Bauer1,2, Natalie Köhler2,3, Anna-Verena Stell2
1Division of Blood and Marrow Transplantation and Cellular Therapy, Stanford University, Center for Clinical Sciences Research Building, 269 W. Campus Drive, Stanford, CA 94305, United States.
Journal of leukocyte biology
|September 24, 2023
概括
人类不变的自然杀手T细胞在胆髓中成熟,经历不同的阶段. 这项研究揭示了亚系承诺的证据,其中不成熟的细胞类似于iNKT2和成熟的细胞类型iNKT1.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 发展生物学 发展生物学
背景情况:
- 不变的自然杀手T (iNKT) 细胞是罕见的,具有免疫调节功能的异质T细胞.
- 鼠iNKT细胞在胆髓中通过不同的阶段 (iNKT1,iNKT2,iNKT17) 成熟.
- 人类iNKT细胞在胸腺中的分化途径尚不清楚.
研究的目的:
- 定义在胸膜发育期间人类iNKT细胞的成熟阶段.
- 为了评估人类胸膜iNKT细胞的亚系承诺.
- 为了比较人类胸膜iNKT细胞的分化与外围iNKT细胞群.
主要方法:
- 单细胞RNA测序 (scRNA-seq) 的人类Vα24+Vβ11+iNKT细胞从胸细胞.
- 无监督的聚类分析,以识别不同的细胞群.
- 细系定义基因表达的分析.
- 与外围血液iNKT细胞的公开scRNA-seq数据的整合.
主要成果:
- 人体胸膜iNKT细胞呈现异质性,有5个已识别的集群代表不同的成熟阶段.
- 未成熟的群体表现出高基因表达用于发育和增殖,而成熟的群体表现出细胞毒性效应分子.
- 不成熟的主要显示iNKT2签名,更差异化的显示iNKT1签名.
- 两个主要的iNKT子集存在于胸腺和外围,还有额外的未成熟子集,只存在于胸腺.
结论:
- 人体胸膜iNKT细胞经历不同的成熟阶段.
- 证据支持人体胸腺内iNKT细胞的亚系承诺.
- 这些发现为了解人类iNKT细胞发育和异质性提供了一个框架.
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