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STIM1介导的NFAT信号与STAT1协同,以控制T-bet表达和T_H1分化

Li Zhong¹, Yin-Hu Wang¹, Sascha Kahlfuss^1,2

¹Department of Pathology, New York University Grossman School of Medicine, New York, NY, USA.

Nature immunology

|February 21, 2025

概括

流体相互作用分子1 (STIM1) 对于T辅助1细胞的分化至关重要. 一个导致免疫缺陷的STIM1突变突出了STIM1-SOCE-NFAT通路.

科学领域:

免疫学免疫学免疫学
分子生物学分子生物学
细胞生物学细胞生物学

背景情况:

流体相互作用分子1 (STIM1) 调节储存运行的入 (SOCE),对T细胞激活至关重要.
对于免疫对抗细胞内病原体至关重要的T辅助1 (Th1) 细胞依赖T-bet (TBX21) 表达.
在Th1细胞分化中SOCE的确切作用仍然不完全理解.

研究的目的:

研究STIM1和SOCE在Th1细胞分化中的作用.
阐明SOCE影响T-bet表达的分子机制.
了解STIM1功能障碍对人类免疫缺陷的影响.

主要方法:

对患有STIM1功能丧失突变的患者的分析.
在T细胞中评估SOCE,NFAT结合和TBX21表达.
在SOCE缺陷细胞中研究细胞因子信号传递,包括IL-12.

主要成果:

一名患有STIM1突变的患者表现出废除的SOCE和免疫缺陷.
SOCE促进NFAT与TBX21增强剂 (CNS-1) 的结合,并与STAT1协同进行TBX21表达.
缺少SOCE的T细胞显示TBX21减少,但IL-12受体表达增加,允许IL-12恢复T-bet水平.

结论:

STIM1-SOCE-NFAT信号通路对于Th1细胞分化至关重要.
Th1差异化取决于细胞因子环境和SOCE状态.
这一途径是适应性免疫的关键组成部分,也是免疫缺陷的潜在目标.

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