测量人类初级T细胞对抗原的识别,这些T细胞具有选择的正位素交换TCRs
Vanessa Mühlgrabner1, Angelika Plach1, Johannes Holler1
1Medical University of Vienna, Center for Pathophysiology, Infectiology and Immunology, Institute for Hygiene and Applied Immunology, Vienna, Austria.
Methods in cell biology
|February 7, 2025
概括
本研究介绍了一种使用支持脂质双层 (SLBs) 的定量成像平台,用于分析T细胞抗原受体 (TCR) 参与和信号传递. 这种方法可以精确监测T细胞对治疗开发的反应.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 生物物理学的生物物理.
背景情况:
- 了解T细胞抗原识别对于管理传染病,癌症,自身免疫和器官移植排斥至关重要.
- 开发有效的基于T细胞的疗法需要精确的方法来监测T细胞的反应.
- 目前的方法可能缺乏对T细胞相互作用的详细分析所需的定量分辨率.
研究的目的:
- 介绍和详细介绍一个定量成像平台,用于分析T细胞抗原识别.
- 为了使T细胞抗原受体 (TCR) 参与和信号的单细胞水平分析.
- 为了促进在定义的抗原呈现条件下对T细胞反应的定量比较.
主要方法:
- 使用平面玻璃支的脂质双层 (SLB) 作为替代抗原呈现细胞系统.
- 具有特定抗原 (带载的HLA),粘附分子 (ICAM-1) 和共刺激分子 (B7-1) 的功能化SLB.
- 采用定量成像来记录和分析表达患者衍生TCR的T细胞中的突触抗原参与和信号.
主要成果:
- 证明了SLB平台在单细胞水平上定量测量T细胞相互作用的能力.
- 能够对抗原参与动态和相关信号响应进行详细分析.
- 为T细胞激活在不同抗原密度的定量比较提供了一个框架.
结论:
- 使用SLB开发的定量成像平台为研究T细胞抗原识别提供了强大的工具.
- 该平台支持基于T细胞的免疫疗法的合理设计和开发.
- 它提供了一种高分辨率的方法,用于监测T细胞在各种健康和疾病环境中的反应.
更多相关视频
相关概念视频
T Cell Activation and Clonal Selection
633
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...
633
Diversity of Antigen Receptors
492
Antigen receptors are essential components of the immune system crucial in defending the body against foreign invaders. These receptors are present on the surface of B and T cells, enabling them to recognize antigens and mount an appropriate immune response.
Before encountering any antigen, lymphocytes express these receptors. On B cells, the antigen receptor is a membrane-bound antibody molecule called BCR; on T cells, it is a T cell receptor or TCR. B and T cell receptors are composed of two...
Before encountering any antigen, lymphocytes express these receptors. On B cells, the antigen receptor is a membrane-bound antibody molecule called BCR; on T cells, it is a T cell receptor or TCR. B and T cell receptors are composed of two...
492
Antigens Involved in Adaptive Immunity
441
An antigen is any substance the immune system identifies as foreign and potentially harmful to the body, prompting an immune response. Antigens have two functional properties: immunogenicity and reactivity. Immunogenicity is the ability of an antigen to stimulate a specific immune response. At the same time, reactivity describes the antigen's ability to react with the cells and antibodies produced in response to it.
Complete Antigens
Complete antigens possess both immunogenicity and...
Complete Antigens
Complete antigens possess both immunogenicity and...
441
Cell-mediated Immune Responses
66.7K
Overview
66.7K
Cytotoxic T Cells-mediated Immune Response
832
Cytotoxic T cells are a vital component of the immune system. They have the remarkable ability to identify and target antigens on infected or abnormal cells. These antigens often originate from intracellular pathogens such as viruses or abnormal proteins cancer cells produce.
Immunological surveillance is the ability of immune cells to monitor and eliminate infected cells with intracellular pathogens, neoplastically transformed cells, and cells with non-self antigens. Cytotoxic T cells and NK...
Immunological surveillance is the ability of immune cells to monitor and eliminate infected cells with intracellular pathogens, neoplastically transformed cells, and cells with non-self antigens. Cytotoxic T cells and NK...
832
Antigen Presenting Cells
1.7K
The immune system is a complex network of cells and molecules that protects the body from foreign invaders. T cells, a type of white blood cell, play a crucial role in this process. They recognize and attack foreign substances, such as pathogens, that enter the body.
T cells require the help of antigen-presenting cells (APCs), which process foreign antigens into smaller fragments that can be recognized by T cells. These APCs are highly specialized cells that efficiently internalize antigens...
T cells require the help of antigen-presenting cells (APCs), which process foreign antigens into smaller fragments that can be recognized by T cells. These APCs are highly specialized cells that efficiently internalize antigens...
1.7K


