Related Experiment Video
Updated: Jul 4, 2026
10:31
Real-time Live Imaging of T-cell Signaling Complex Formation
Published on: June 23, 2013
Systems biology of T cell activation
1Institute of Molecular and Clinical Immunology, Otto-von-Guericke University, Leipziger Strasse 44, 39120 Magdeburg, Germany. Jon.Lindquist@med.ovgu.de
Ernst Schering Foundation Symposium Proceedings
|May 31, 2008
Summary
T lymphocytes are crucial for adaptive immunity, distinguishing pathogens to mount effective responses. Understanding T cell activation pathways is key to treating autoimmune diseases and developing new therapies.
Area of Science:
- Immunology
- Cellular Biology
- Pathogen Response
Background:
- T lymphocytes orchestrate adaptive immunity against pathogens.
- Cytotoxic T cells eliminate infected cells; helper T cells support antibody production and cytokine signaling.
- Dysregulated T cell activation underlies autoimmune disorders.
Purpose of the Study:
- To elucidate T cell antigen discrimination mechanisms.
- To understand the organization of T cell signaling pathways.
- To identify novel therapeutic targets for immune-related diseases.
Main Methods:
- Investigated T cell activation signaling pathways.
- Analyzed T cell antigen recognition processes.
- Examined the regulation of immune response outcomes.
Main Results:
- Detailed the complex signaling networks governing T cell activation.
- Highlighted the critical role of signal organization in immune specificity.
- Identified potential points of intervention for immune dysregulation.
Conclusions:
- Enhanced comprehension of T cell function is vital for addressing autoimmunity.
- Targeting T cell signaling pathways offers promise for novel therapeutic strategies.
- Further research into T cell discrimination can advance treatment options.
Related Concept Videos
01:22T 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...
Naive T cells that have not yet encountered an antigen express two primary CD...
01:24B Cell Activation and Differentiation
The adaptive immune response, a sophisticated defense mechanism, relies on the activation and differentiation of B lymphocytes, or B cells. These processes enable our bodies to mount a tailored response against specific pathogens such as bacteria, free virus particles, toxins, and parasites.
When naive B cells encounter a specific antigen that can bind to the B cell receptor (BCR) on their surface, they undergo sensitization to respond to the antigen's presence. Sensitization begins with...
When naive B cells encounter a specific antigen that can bind to the B cell receptor (BCR) on their surface, they undergo sensitization to respond to the antigen's presence. Sensitization begins with...
01:24T 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...
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
01:23Cells of the Adaptive Immune Response
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...
01:40Cell-mediated Immune Responses
Overview
01:22Antigen Presenting Cells
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...