皮肤内存T细胞健身需要在皮肤中遇到抗原
Eric S Weiss1,2, Toshiro Hirai3,4, Haiyue Li1,2
1Department of Dermatology, University of Pittsburgh, Pittsburgh, United States.
eLife
|December 30, 2025
概括
皮肤中的组织内存T细胞 (TRM) 在发育过程中遇到抗原时更好地持续存在. 这种局部抗原体验减少了它们对TGFβ的依赖,并促进了增殖,增强了免疫防御.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 皮肤病学 皮肤病学
背景情况:
- CD8+组织内存T细胞 (TRM) 对于组织防御至关重要.
- TRM持久性依赖于自克林TGFβ,由角质细胞整合素激活.
- 在TRM发育期间遇到的局部抗原会影响它们的持久性和功能.
研究的目的:
- 调查表皮中的局部抗原体验如何影响TRM分化和持久性.
- 阐明在局部抗原暴露后增强TRM适应性的基础分子机制.
主要方法:
- 单细胞RNA测序 (scRNA-seq) 的表皮TRM.
- 对TRM扩散和差异化标记物的分析.
- 研究TGFβ受体III (TGFβRIII) 在TRM功能中的作用.
主要成果:
- 与先前局部抗原体验的表皮TRM与旁观者相比显示了增强的分化特征.
- 这些抗原经验的TRM在回忆时表现出增加的增殖,这取决于最初的抗原亲和力.
- 当地抗原暴露导致TGFβRIII的差异表达,增强TGFβ结合力.
- 选择性切除TGFβRIII损害了抗原经验TRM的增强持久性.
结论:
- 在TRM分化过程中,表皮中的抗原驱动的T细胞受体 (TCR) 信号建立了一个更持久和增殖的TRM群体.
- 这一过程涉及TGFβ信号的减少要求和TGFβRIII的升级调节.
- 当地抗原体验显著提高了表皮TRM健康和保护能力.
相关概念视频
Cells of the Adaptive Immune Response
8.4K
The T and B lymphocytes of the adaptive immune system develop from common lymphoid progenitor cells in the bone marrow. These progenitors give rise to precursors that eventually develop into both T and B lymphocytes. As these precursors mature, they gain the ability to detect and respond to foreign antigens in the body, a process known as immunocompetence. Additionally, these precursors acquire self-tolerance, a process that ensures they do not react to self-antigens. This intricate system...
8.4K
Immunological Memory
14.9K
Immunological memory, a pivotal pillar of the adaptive immune system, is responsible for the body's ability to remember and respond more swiftly and effectively to previously encountered pathogens. This remarkable feature is what makes vaccines so effective in preventing diseases.
What is Immunological Memory?
Immunological memory is an integral function of the immune system that allows it to recognize and react more rapidly and effectively to pathogens previously encountered. This feature...
What is Immunological Memory?
Immunological memory is an integral function of the immune system that allows it to recognize and react more rapidly and effectively to pathogens previously encountered. This feature...
14.9K
Cell-mediated Immune Responses
83.3K
Overview
83.3K
T Cell Activation and Clonal Selection
14.5K
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...
14.5K
Diversity of Antigen Receptors
1.3K
Antigen receptors are essential components of the immune system crucial in defending the body against foreign invaders. These receptors are present on the surface of B and T cells, enabling them to recognize antigens and mount an appropriate immune response.
Before encountering any antigen, lymphocytes express these receptors. On B cells, the antigen receptor is a membrane-bound antibody molecule called BCR; on T cells, it is a T cell receptor or TCR. B and T cell receptors are composed of two...
Before encountering any antigen, lymphocytes express these receptors. On B cells, the antigen receptor is a membrane-bound antibody molecule called BCR; on T cells, it is a T cell receptor or TCR. B and T cell receptors are composed of two...
1.3K
Special Features of Adaptive Immunity
2.8K
The adaptive immune system, a crucial component of the overall immune response, offers a highly specialized defense against pathogens. It involves specific cell types and features, enabling it to combat infections effectively and efficiently.
The primary cell types involved in adaptive immunity are T cells and B cells. Each type has a unique role in defending the body against pathogens. T cells are responsible for cell-mediated immunity. They identify and eliminate infected cells directly,...
The primary cell types involved in adaptive immunity are T cells and B cells. Each type has a unique role in defending the body against pathogens. T cells are responsible for cell-mediated immunity. They identify and eliminate infected cells directly,...
2.8K


