在分裂前的TCF1下降决定了长期的CD8 T细胞命运.
Natalie R Favret1, Maider Astorkia2,3, Melissa M Wolf1
1Department of Medicine, Division of Hematology and Oncology, Department of Pathology, Microbiology, and Immunology, Vanderbilt School of Medicine, Nashville, TN, USA.
bioRxiv : the preprint server for biology
|November 24, 2025
概括
T细胞因子1 (TCF1) 在CD8 T细胞分裂之前迅速下降,然后反弹,影响长期的效应细胞命运. 这种动态调节作为免疫反应的关键检查点.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 分子生物学分子生物学
背景情况:
- T细胞因子1 (TCF1) 对于T细胞的发育和分化至关重要.
- 在效应T细胞分化过程中,TCF1的下调.
- 在细胞周期进入前的T细胞原始化过程中TCF1的作用以前是未知的.
研究的目的:
- 研究TCF1在CD8T细胞激活的早期阶段的作用和动态.
- 了解TCF1调控如何影响T细胞命运决定.
主要方法:
- 在抗原接触后的小鼠和人类CD8T细胞中分析TCF1表达动态.
- 转录和表观遗传分析以确定TCF1-调节的途径.
- 通过siRNA介导的TCF1敲击来评估功能后果.
主要成果:
- 在抗原接触后的几个小时内,TCF1的表达迅速下调,在细胞循环进入之前.
- 在细胞循环进入时,TCF1水平会反弹,然后随着增殖而下降.
- 在TCF1分裂前的下降幅度受到TCR信号和细胞因子的影响,调节长期效应和记忆细胞命运.
- 通过TCF1调节的染色质重塑迅速发生,激活了效应和炎症通路.
- 在分裂之前过渡的TCF1下调会诱导长期的效应细胞倾斜.
结论:
- TCF1的动态预分裂调节是一种控制CD8T细胞命运承诺的新机制.
- TCF1作为一个关键的检查点,调节感染,癌症和自身免疫的T细胞反应.
相关概念视频
T Cell Activation and Clonal Selection
14.6K
T cells are integral to our adaptive immune system, recognizing and effectively responding to foreign antigens. T cell activation and clonal selection are pivotal in orchestrating this immune response. This article elucidates these mechanisms, detailing the roles of cluster of differentiation (CD) markers, major histocompatibility complex (MHC) molecules, costimulatory signals, and the process of clonal selection.
Naive T cells that have not yet encountered an antigen express two primary CD...
Naive T cells that have not yet encountered an antigen express two primary CD...
14.6K
T Cell Types and Functions
2.1K
When T cells with CD4 markers are activated, they give rise to two types of effector cells: helper T cells and regulatory T cells. Meanwhile, T cells with CD8 markers differentiate into effector cytotoxic T cells. The differentiation of CD4 T cells into helper T cell subsets, such as Th1, Th2, and Th17 cells, is dependent on the antigen type, antigen-presenting cell, and regulatory cytokines.
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
2.1K


