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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...

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.
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Cytotoxic T Cells-mediated Immune Response

Cytotoxic T Cells-mediated Immune Response

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...

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Updated: Jan 9, 2026

Phenotypic and Functional Analysis of Activated Regulatory T Cells Isolated from Chronic Lymphocytic Choriomeningitis Virus-infected Mice

Phenotypic and Functional Analysis of Activated Regulatory T Cells Isolated from Chronic Lymphocytic Choriomeningitis Virus-infected Mice

Published on: June 22, 2016

CD8+ Regulatory T Cells.

Veena K Vuttaradhi^1,2, Clotilde M Vermelle³, John Y Choi^4,5

¹Department of Cancer Immunology and Virology, Dana-Farber Cancer Institute, Boston, Massachusetts, USA;

Annual Review of Immunology

|December 5, 2025

Summary

This summary is machine-generated.

CD8+ regulatory T cells (Tregs) are crucial for immune tolerance. This review highlights their development, function, and potential for immunotherapy in autoimmune diseases and cancers.

Keywords:

HLA-E Helios KIR Ly49 Qa-1 multiple sclerosis self-tolerance

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

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Published on: April 16, 2012

Area of Science:

Immunology
Cellular Biology
Medical Research

Background:

Immune tolerance relies on suppressive pathways, with CD4+ regulatory T cells (Tregs) extensively studied.
The role of CD8+ Tregs in self-tolerance remains less understood.
Understanding regulatory T cell subsets is key to advancing immunology.

Purpose of the Study:

To review recent findings on CD8+ regulatory T cell development and function.
To explore the potential clinical applications of CD8+ Tregs.
To highlight CD8+ Tregs recognizing self-peptides associated with MHC-Ib products.

Main Methods:

Review of recent literature on CD8+ regulatory T cells.
Analysis of T cell receptor repertoire and thymic differentiation.
Investigation of CD8+ Treg suppression mechanisms.

Main Results:

Focus on CD8+ Tregs expressing Ly49/KIR coinhibitory receptors.
Summary of thymic differentiation and suppression mechanisms.
Identification of human counterparts to these CD8+ Tregs.

Conclusions:

CD8+ Tregs represent a significant regulatory subset with implications for immune tolerance.
Potential for CD8+ Treg-dependent immunotherapy in autoimmune diseases and cancers.
Further research into CD8+ Tregs can unlock novel therapeutic strategies.