组织内存 CD8 T 细胞多样性被空间时间刻印
Miguel Reina-Campos1,2, Alexander Monell1,3, Amir Ferry1
1School of Biological Sciences, Department of Molecular Biology, University of California, San Diego, La Jolla, CA, USA.
Nature
|January 22, 2025
概括
显著的小肠形成组织内存CD8 T (TRM) 细胞多样性. 上层囊含有差异化的TRM细胞,而下层囊含有类似TRM细胞,显示出位置驱动的免疫细胞专业化.
科学领域:
- 免疫学
- 细胞生物学
- 系统生物学
背景情况:
- 组织内存 CD8 T (TRM) 细胞对于屏障部位的免疫是至关重要的.
- 在小肠中,TRM细胞存在于不同的子群体中,具有不同的效应器功能和记忆潜力.
- 这种TRM细胞异质性的起源在很大程度上是未知的.
研究的目的:
- 调查不同的组织是否驱动小肠TRM细胞的表型异质性.
- 阐明TRM细胞分化和空间组织的分子机制.
- 开发研究组织免疫网络和T细胞命运规范的框架.
主要方法:
- 人类小肠样本的空间转录.
- 一个急性系统性病毒感染的小鼠模型.
- 聚合光学编码的基因干扰,用于高通量功能分析.
- 在单个转录分辨率下分析空间分布和基因表达的计算方法.
主要成果:
- 确定了两种不同的TRM细胞状态:上的TRM细胞和下的TRM细胞.
- 证明肠道结构中的区域化信号,包括体受体相互作用和细胞因子梯度,调解这种空间分离.
- 显示阻断特定的信号通路 (TGFβ,CXCL9/10) 影响TRM细胞命运与解剖划分一致.
结论:
- 小肠内不同的解剖是TRM细胞表型多样性的关键驱动因素.
- 免疫细胞的位置和功能状态基本上是交织在一起的,早期的命运规范受当地微环境的影响.
- 这项研究为了解组织内免疫细胞的动态和专业化提供了一个新的框架.
相关概念视频
T Cell Activation and Clonal Selection
645
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...
645
Cells of the Adaptive Immune Response
947
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...
947
Immunological Memory
522
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...
522


