向调节性T细胞赋予抗原特异性:对正在进行移植临床开发的细胞制剂进行比较分析
Ada Sera Kurt1, Paula Ruiz1, Emmanuelle Landmann1
1Department of Inflammation Biology, Institute of Liver Studies, School of Immunology and Microbial Sciences, James Black Centre, King's College London, London, UK.
概括
具有异抗原特异性的工程调节T细胞 (Tregs) 增强了移植耐受性. 与其他Treg产品相比,化学抗原受体 (CAR) -Tregs在体外和体内表现出优异的免疫抑制功能.
科学领域:
- 免疫学 免疫学 免疫学
- 移植免疫学 移植免疫学
- 细胞疗法是一种细胞疗法.
背景情况:
- 调节性T细胞 (Tregs) 对免疫耐受性至关重要.
- 工程Tregs的抗原特异性旨在提高它们在移植中的有效性.
- 目前的临床策略包括捐赠者抗原反应性 (DAR) Tregs,共刺激阻断 (CSB) -Tregs和仿制抗原受体 (CAR) -Tregs.
研究的目的:
- 为了比较三种制造的Treg产品 (DAR Tregs,CSB-Tregs,CAR-Tregs) 在体外和体内相对强度.
- 评估类抗原特异性对Treg功能和免疫抑制能力的影响.
主要方法:
- 在体外评估Treg前体频率和免疫抑制性质.
- 在体内评估使用移植对宿主疾病的小鼠模型.
- 将Treg产品与多克隆Tregs进行比较.
主要成果:
- 这三种制造策略都增加了与多克隆Tregs相比,全活性Tregs的频率.
- 全活性Treg频率的增加与体外免疫抑制性质相关.
- 在移植与宿主疾病模型中,CAR-Tregs表现出最强的细胞对细胞抑制效应,并使接受者存活时间显著延长.
结论:
- 抗原特异性Treg产品,特别是CAR-Tregs,显示出增强的免疫抑制功效.
- 这些发现对解释正在进行的移植临床试验有影响.
- 抗原活性程度与Treg免疫抑制功能直接相关.
相关概念视频
Cell-mediated Immune Responses
67.8K
Overview
67.8K
T Cell Activation and Clonal Selection
686
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...
686
Tissue Transplantation
343
Tissue transplantation is a significant medical procedure involving the transfer of cells, tissues, or organs from a donor to a recipient, with the primary aim of restoring lost functions. This procedure is crucial in treating a broad spectrum of diseases, including kidney diseases, liver failure, heart disease, and certain types of cancers.
The Biology of Tissue Transplantation
The biology of tissue transplantation hinges on the Major Histocompatibility Complex (MHC) molecules. These molecules...
The Biology of Tissue Transplantation
The biology of tissue transplantation hinges on the Major Histocompatibility Complex (MHC) molecules. These molecules...
343


