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Related Concept Videos

Cells of the Adaptive Immune Response01:23

Cells of the Adaptive Immune Response

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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...
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T Cell Types and Functions01:24

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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.
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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.
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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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Lymphoid Cells and Tissues01:18

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Lymphoid cells and tissues are integral to the immune system, which is crucial in maintaining our body's defense against harmful pathogens. They form the building blocks of lymphoid organs, which include the spleen, thymus, and lymph nodes.
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Related Experiment Video

Updated: Apr 26, 2026

Generation of Induced Regulatory T Cells from Primary Human Na&#239;ve and Memory T Cells
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Organ-specific and memory treg cells: specificity, development, function, and maintenance.

Iris K Gratz1, Daniel J Campbell2

  • 1Department of Molecular Biology, University of Salzburg , Salzburg , Austria ; Department of Dermatology, University of California San Francisco , San Francisco, CA , USA ; Division of Molecular Dermatology and EB House Austria, Department of Dermatology, Paracelsus Medical University , Salzburg , Austria.

Frontiers in Immunology
|August 1, 2014
PubMed
Summary

Foxp3(+) regulatory T cells (Treg cells) are crucial for immune balance, preventing autoimmunity and controlling responses to harmless antigens. This review explores Treg cell diversity and their role in maintaining tolerance and regulatory memory.

Keywords:
Foxp3T cell homeostasisimmune memoryimmune toleranceregulatory T cells

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Area of Science:

  • Immunology
  • Cell Biology

Background:

  • Foxp3(+) regulatory T cells (Treg cells) are vital for immune homeostasis, maintaining self-tolerance and suppressing immune responses.
  • Dysregulation of Treg cells is implicated in autoimmune diseases, chronic infections, and cancer.
  • Emerging evidence reveals Treg cells comprise diverse subsets with specialized functions and origins.

Purpose of the Study:

  • To review the heterogeneity of Treg cell populations.
  • To explore the signals that drive Treg cell differentiation and specialization.
  • To discuss the mechanisms by which Treg cells establish organ-specific and systemic tolerance, including regulatory memory.

Main Methods:

  • This is a review article, synthesizing findings from recent studies.
  • Key concepts discussed include Treg cell phenotypes, functions, developmental origins, and tissue tropism.
  • Mechanisms of tolerance induction and the concept of regulatory memory are examined.

Main Results:

  • Treg cells are not a monolithic population but a diverse group of specialized subsets.
  • Distinct signals influence the differentiation and function of these Treg subsets.
  • Treg cells employ complex mechanisms to achieve tolerance and develop regulatory memory.

Conclusions:

  • Understanding Treg cell diversity is critical for comprehending immune regulation.
  • Targeting specific Treg subsets may offer therapeutic strategies for immune-mediated diseases.
  • The concept of regulatory memory in Treg cells opens new avenues for immunological research.