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相关概念视频

T Cell Types and Functions01:24

T Cell Types and Functions

963
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...
963
T Cell Activation and Clonal Selection01:22

T Cell Activation and Clonal Selection

691
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...
691
Cells of the Adaptive Immune Response01:23

Cells of the Adaptive Immune Response

972
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...
972

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相关实验视频

Updated: Jun 14, 2025

Phenotypic and Functional Analysis of Activated Regulatory T Cells Isolated from Chronic Lymphocytic Choriomeningitis Virus-infected Mice
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效应器内存类型调节性T细胞表现出表型和功能不稳定性.

Désirée Jacqueline Wendering1,2, Leila Amini3,4, Stephan Schlickeiser1,5

  • 1Berlin Institute of Health (BIH) at Charité-Universitätsmedizin Berlin, BIH Center for Regenerative Therapies (BCRT), Development of Biomarkers and Regenerative Therapies, Augustenburger Platz 1, 13353 Berlin, Germany.

Science advances
|September 4, 2024
PubMed
概括

识别特定的调节性T细胞 (Treg) 子集对于开发稳定,有效的细胞疗法至关重要. 不同于效应记忆类型的早期差异化的Treg群体,显示出对免疫障碍治疗的卓越功能和稳定性.

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科学领域:

  • 免疫学 免疫学 免疫学
  • 细胞疗法细胞疗法
  • 基因组医学是基因组医学.

背景情况:

  • 调节性T细胞 (Treg) 对于免疫平衡至关重要,并对免疫疾病具有治疗潜力.
  • 在CAR技术和基因编辑方面的进步提供了增强的Treg特异性和功能.
  • 由于杂质和功能不稳定,确保基因编辑Treg产品的安全性和稳定性仍然存在挑战.

研究的目的:

  • 调查不同Treg子集的特性和稳定性.
  • 确定适合开发安全有效的细胞疗法的Treg子集.
  • 优化稳定的Treg细胞产品的制造工艺.

主要方法:

  • 对Treg子集命运,表观基因组稳定性,转录组,TCR谱和活体功能进行分析.
  • 在后制造过程中对Treg子集的评估.
  • 在制造之前,特定的Treg子集的耗尽.

主要成果:

  • 每个Treg亚组都在血统稳定性,表观遗传学,表面标记,TCR多样性和转录学方面表现出独特的特征.
  • 早期分化记忆Treg子集,包括一个新的幼稚型记忆Treg群体,与晚期分化效应记忆Treg细胞相比,表现出优越的调节功能,增殖和表观基因组稳定性.
  • 稳定,功能性的Treg产品的高产量是通过排除效应器内存类Treg子集来实现的.

结论:

  • 在细胞产物中保持血统稳定性,Treg子集的组成至关重要.
  • 早期分化的Treg子集由于其增强的稳定性和功能,更适合于治疗应用.
  • 削减特定的Treg子集可以提高基于Treg的细胞疗法的质量和疗效.