T 细胞子集,激活状态和功能的可复制单细胞注释
Dylan Kotliar1,2,3,4,5, Michelle Curtis1,2,3,4, Ryan Agnew1,2,3,4
1Center for Data Sciences, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA.
Nature methods
|September 3, 2025
概括
这项研究介绍了T-CellAnnoTator (TCAT),一种用于详细分析T细胞的新计算工具. TCAT描述T细胞的状态和功能,有助于预测对癌症免疫疗法的反应.
科学领域:
- 免疫学
- 计算生物学
- 基因组学
背景情况:
- 通过专门的基因表达程序 (GEP) 调节免疫反应.
- 传统的T细胞子集分类 (例如,TH1,TH2,TH17) 被单细胞数据所挑战,揭示了状态的连续性.
- 需要新的分析框架来准确地描述多样化的T细胞群体.
研究的目的:
- 开发和验证T-CellAnnoTator (TCAT),一个用于全面T细胞表征的计算管道.
- 识别和量化与T细胞功能和状态相关的可复制基因表达程序 (GEP).
- 评估TCAT在预测临床结果中的有用性,例如对免疫检查点抑制剂的反应.
主要方法:
- 开发T-CellAnnoTator (TCAT) 管道,用于同时量化预定义的GEP.
- 对包括700个不同组织和疾病背景的700万个T细胞的大规模数据集的分析.
- 确定T细胞激活程序的实验验证.
主要成果:
- 识别46个反映核心T细胞功能的可复制GEP (例如,增殖,细胞毒性,耗尽,效应状态).
- 展示新的T细胞激活程序.
- 在多种瘤类型中预测免疫检查点抑制剂反应的激活GEP.
- 一般化的框架,starCAT,可以在其他细胞类型和组织中进行可复制的注释.
结论:
- TCAT为精确的T细胞表征提供了先进的分析框架,超越了传统的子集定义.
- 已识别的GEP提供了对T细胞异质性和在各种生物环境中的功能的见解.
- TCAT和starCAT是促进免疫学研究和精准医学的宝贵工具,特别是在预测免疫治疗反应方面.
相关概念视频
T Cell Activation and Clonal Selection
4.5K
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...
4.5K
Somatic to iPS Cell Reprogramming
2.3K
Reprogramming alters the gene expression in somatic cells, transforming them into induced pluripotent stem (iPS) cells over several generations. Scientists can reprogram cells by introducing genes for four transcription factors—Oct4, Sox2, Klf4, and c-Myc (OSKM) by viral or non-viral methods. These factors are also known as Yamanaka factors after Shinya Yamanaka, who first generated iPS cells using mouse skin cells. Yamanaka was awarded the Nobel Prize in Physiology or Medicine in 2012...
2.3K
T Cell Types and Functions
1.4K
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...
1.4K
Cells of the Adaptive Immune Response
4.0K
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...
4.0K


