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Related Concept Videos

Immunological Memory01:23

Immunological Memory

Immunological memory, a pivotal pillar of the adaptive immune system, is responsible for the body's ability to remember and respond more swiftly and effectively to previously encountered pathogens. This remarkable feature is what makes vaccines so effective in preventing diseases.
What is Immunological Memory?
Immunological memory is an integral function of the immune system that allows it to recognize and react more rapidly and effectively to pathogens previously encountered. This feature is...
Cells of the Adaptive Immune Response01:23

Cells 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...
T Cell Activation and Clonal Selection01:22

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...
Cell-mediated Immune Responses01:40

Cell-mediated Immune Responses

Overview
Vaccines01:21

Vaccines

Vaccines are among the most effective tools in preventive medicine, designed to prepare the immune system to recognize and combat infectious agents. By introducing antigens—substances that the immune system identifies as foreign—vaccines stimulate an adaptive immune response that leads to immunological memory. This immunological memory enables the body to mount a faster and more effective response upon future exposures to the actual pathogen.Vaccines can be categorized based on the type of...
Special Features of Adaptive Immunity01:20

Special Features of Adaptive Immunity

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,...

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Related Experiment Video

Updated: May 31, 2026

Identification of Rare Antigen-Specific T Cells from Mouse Lungs with Peptide:Major Histocompatibility Complex Tetramers
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Identification of Rare Antigen-Specific T Cells from Mouse Lungs with Peptide:Major Histocompatibility Complex Tetramers

Published on: July 19, 2024

Regional and mucosal memory T cells.

Brian S Sheridan1, Leo Lefrançois

  • 1Center for Integrated Immunology and Vaccine Research, Department of Immunology, University of Connecticut Health Center, Farmington, Connecticut, USA. bsheridan@uchc.edu

Nature Immunology
|July 9, 2011
PubMed
Summary

Most memory T cells stay in tissues after infection. Specific programming guides T cells to tissues, creating resident memory for organ-based immunity and defense.

Area of Science:

  • Immunology
  • Cell Biology
  • Tissue-Specific Immunity

Background:

  • Most antigen-specific memory T cells are found in nonlymphoid tissues post-infection.
  • Tissue-specific programming directs T cell migration, fostering tissue-resident memory (TRM) in organs like the gut and skin.
  • TRM cells in barrier tissues and internal organs offer crucial first-line defense.

Purpose of the Study:

  • To define the mechanisms governing the retention and development of tissue-resident memory T cells.
  • To understand how tissue-specific programming influences T cell migration and function.
  • To elucidate factors critical for organ-based immunity.

Main Methods:

  • Analysis of T cell migration patterns post-infection.
  • Investigation of molecular pathways regulating T cell retention in tissues.

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Murine Superficial Lymph Node Surgery
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Murine Superficial Lymph Node Surgery

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  • Study of transforming growth factor-β (TGF-β) and its role in TRM development.

    • Main Results:

    • Tissue-specific programming directs T cells to appropriate nonlymphoid tissues.
    • Transforming growth factor-β (TGF-β) signaling induces CD103 and downregulates CCR7, promoting T cell retention.
    • These mechanisms are vital for establishing protective memory T cell populations in barrier and internal organs.

    Conclusions:

    • Tissue-resident memory T cells are strategically positioned for rapid defense against reinfection.
    • Understanding the regulation of TRM development is key to harnessing organ-based immunity.
    • Targeting these pathways could enhance protective immunity in various organs.