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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...

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Updated: Jun 24, 2025

T and B Cell Receptor Immune Repertoire Analysis using Next-generation Sequencing

T and B Cell Receptor Immune Repertoire Analysis using Next-generation Sequencing

Published on: January 12, 2021

Exploring T Cell Receptor Repertoires in Myocardial Diseases.

DiyaaElDin Ashour^1,2, Kenz Le Gouge³, Peter P Rainer^4,5,6

¹Department of Internal Medicine I (D.A., G.C.R.), University Hospital Würzburg, Germany.

Circulation Research

|June 6, 2024

Summary

Adaptive immune responses targeting the heart are triggered by cardiac injury. Studying T cell receptors (TCRs) in myocardial diseases offers insights into disease mechanisms and potential diagnostic tools.

Keywords:

T-lymphocytes antigens heart failure inflammation myocardium

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Last Updated: Jun 24, 2025

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Published on: January 12, 2021

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Published on: August 1, 2014

Area of Science:

Immunology
Cardiology
Molecular Biology

Background:

Adaptive immunity, involving B and T lymphocytes, plays a role in cardiac injury.
These lymphocytes recognize specific antigens via unique adaptive immune receptors.
The diversity of these receptors, like T cell receptors (TCRs), is vast, presenting challenges in analysis.

Purpose of the Study:

To review the generation of TCRs in the context of myocardial diseases.
To discuss emerging tools for studying TCR repertoires.
To explore the potential of TCR repertoire analysis in understanding cardiac pathophysiology and diagnostics.

Main Methods:

Review of experimental and clinical evidence on adaptive immunity in cardiac injury.
Discussion of TCR generation mechanisms.
Overview of current and emerging tools for TCR repertoire analysis.

Main Results:

Adaptive immune mechanisms are activated by cardiac injury and influence disease progression.
TCR repertoire diversity is immense, enabling specific immune responses.
Exploring TCR repertoires can deepen understanding of myocardial diseases.

Conclusions:

TCR repertoire analysis is a promising avenue for understanding myocardial pathophysiology.
TCR repertoire studies may lead to novel diagnostic tools for cardiac conditions.