Genes, structures and function of T lymphocyte antigen receptors
M Kronenberg1, B Malissen2, H N Eisen3
1Division of Biology, California Institute of Technology, Pasadena, CA 91125, USA.
Immunology Today
|October 8, 2014
Summary
Recent advances have significantly expanded our understanding of T-cell receptor genes. New data integrates structural, genetic, and immunological properties of T lymphocytes.
Area of Science:
- Immunology
- Genetics
- Structural Biology
Background:
- T-cell receptors (TCRs) are crucial for adaptive immunity.
- Recent advancements have greatly increased knowledge of TCR genes.
Purpose of the Study:
- To integrate recent structural and genetic data on T-cell receptor genes.
- To correlate genetic and structural findings with T lymphocyte immunological properties.
Main Methods:
- Data presented at a recent European Molecular Biology Organization (EMBO) workshop.
- Integration of existing structural, genetic, and immunological data.
Main Results:
- Significant expansion in the knowledge of genes encoding T-cell receptors.
- Initial steps towards integrating diverse datasets concerning T-cell receptors.
Conclusions:
- The field of T-cell receptor genetics and structure is rapidly evolving.
- Further integration of structural, genetic, and functional data is essential for understanding T lymphocyte immunology.
Related Concept Videos
Diversity of Antigen Receptors
2.1K
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...
2.1K
T Cell Activation and Clonal Selection
13.5K
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...
13.5K
T Cell Types and Functions
3.1K
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...
3.1K
Special Features of Adaptive Immunity
3.5K
The adaptive immune system, a crucial component of the overall immune response, offers a highly specialized defense against pathogens. It involves specific cell types and features, enabling it to combat infections effectively and efficiently.
The primary cell types involved in adaptive immunity are T cells and B cells. Each type has a unique role in defending the body against pathogens. T cells are responsible for cell-mediated immunity. They identify and eliminate infected cells directly,...
The primary cell types involved in adaptive immunity are T cells and B cells. Each type has a unique role in defending the body against pathogens. T cells are responsible for cell-mediated immunity. They identify and eliminate infected cells directly,...
3.5K
Cells of the Adaptive Immune Response
6.7K
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...
6.7K
B Cell Activation and Differentiation
14.2K
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...
14.2K


