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相关概念视频

T Cell Activation and Clonal Selection01:22

T Cell Activation and Clonal Selection

669
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...
669

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Updated: Jun 6, 2025

Analysis of T-cell Receptor-Induced Calcium Influx in Primary Murine T-cells by Full Spectrum Flow Cytometry
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以T细胞受体为中心的观点对多式单细胞数据分析进行多式单细胞数据分析.

Kerry A Mullan1,2,3, My Ha2,4,5, Sebastiaan Valkiers1,2,3

  • 1Adrem Data Lab, Department of Computer Science, University of Antwerp, Antwerp, Belgium.

Science advances
|November 29, 2024
PubMed
概括

这项研究主张在单细胞分析中采用T细胞受体 (TCR) 首要方法,揭示了当前方法的局限性. 一个TCR-first策略增强T细胞谱的理解,以改善免疫疗法和诊断.

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科学领域:

  • 免疫学 免疫学 免疫学
  • 计算生物学 计算生物学
  • 基因组学就是基因组学.

背景情况:

  • 单细胞分析目前严重依赖于基因表达,低利用T细胞受体 (TCR).
  • 现有的方法在复杂的剧目中对T细胞类型进行准确注释方面存在局限性.
  • 需要一种以TCR为中心的方法,以充分利用T细胞数据在各种疾病背景下.

研究的目的:

  • 提出并验证单细胞T细胞谱分析的TCR-first策略.
  • 通过引入基于半监督或TCR安排的标准来解决无监督细胞类型注释的局限性.
  • 证明这种方法在识别治疗效应和新型T细胞集群方面的有用性.

主要方法:

  • 来自12项跨多种疾病的人类研究的大型T细胞图谱 (500,000个细胞) 的策划.
  • 开发和应用一个半监督的方法或TCR安排强大的细胞类型注释.
  • 使用STEGO.R工具分析与治疗相关的动态和T细胞.

主要成果:

  • 在未经监督的细胞类型注释方法中发现了重要的局限性.
  • 提出了使用TCR安排或半监督学习的更强大的注释标准.
  • 使用TCR-first方法证明了特定于治疗的T细胞动态和具有潜在抗原特异性的新型公共T细胞群的识别.

结论:

  • 对于全面的T细胞谱分析,转向TCR-first方法的范式转变至关重要.
  • 这种策略可以揭示以前基因表达重点方法忽视的关键T细胞特征.
  • "TCR-first"方法对促进免疫疗法和诊断策略的发展具有前景.