相关实验视频

Updated: May 21, 2025

Generation of Human Chimeric Antigen Receptor Regulatory T Cells

Generation of Human Chimeric Antigen Receptor Regulatory T Cells

Published on: January 3, 2025

调控性T细胞的T细胞受体精确编辑对于乳病的调控性T细胞

Raphaël Porret¹, Ana Alcaraz-Serna¹, Benjamin Peter²

¹Division of Immunology and Allergy, Lausanne University Hospital and University of Lausanne, Lausanne CH-1005, Switzerland.

Science translational medicine

|March 19, 2025

概括

针对质表位体的工程调节性T细胞 (Tregs) 显示出对乳病治疗的希望. 这些对质有反应的Tregs在临床前模型中抑制了免疫反应,为严格的无质饮食提供了潜在的替代方案.

科学领域:

免疫学免疫学免疫学
胃肠病学胃肠病学
细胞疗法细胞疗法

背景情况:

结核病是一种对质敏感的肠病,与HLA-DQ2.5.5强烈相关.
目前的管理仅依赖终身无质饮食,缺乏替代疗法.
调节性T细胞 (Tregs) 在自身免疫性疾病中被探索其治疗潜力.

研究的目的:

为了研究工程化质反应性调节性T细胞 (Tregs) 对乳病的治疗潜力.
为了生成和评估HLA-DQ2.5-受限的CD4+工程T效应细胞 (Teffs) 和Tregs.
在临床前模型中评估这些工程细胞的体内疗效.

主要方法:

通过同源导向的修复替换正型T细胞受体 (TCR),以创建工程T细胞.
产生针对免疫主导的质表位特异性HLA-DQ2.5-受限CD4+Teffs和Tregs的质反应性HLA-DQ2.5.
使用HLA-DQ2.5转基因小鼠的体内实验,包括口服谷蛋白挑战和细胞迁移研究.

主要成果:

确定了特定于去化质表位体 (DQ2.5-glia-α1a和DQ2.5-glia-α2) 的精选TCR.
工程Teff在口服接触质后迁移到肠道.
工程Tregs证明了抗原特异性旁观者抑制质反应性Teff增殖和迁移.

结论:

质反应工程Tregs表现出强大的抑制功能.
这些发现表明,工程Tregs对乳病具有治疗潜力.
抗原特异性激活对于工程Tregs的抑制疗效至关重要.

更多相关视频

Generation of Induced Regulatory T Cells from Primary Human Naïve and Memory T Cells

Generation of Induced Regulatory T Cells from Primary Human Naïve and Memory T Cells

Published on: April 16, 2012

Adenoviral Transduction of Naive CD4 T Cells to Study Treg Differentiation

Adenoviral Transduction of Naive CD4 T Cells to Study Treg Differentiation

Published on: August 13, 2013

相关概念视频

T Cell Activation and Clonal Selection

T Cell Activation and Clonal Selection

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...

T Cell Types and Functions

T Cell Types and Functions

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...