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Immunological Memory01:23

Immunological Memory

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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...
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T Cell Activation and Clonal Selection01:22

T Cell Activation and Clonal Selection

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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.
Naive T cells that have not yet encountered an antigen express two primary CD...
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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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Cell-mediated Immune Responses01:40

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T Cell Types and Functions01:24

T Cell Types and Functions

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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.
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
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Special Features of Adaptive Immunity01:20

Special Features of Adaptive Immunity

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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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Updated: Jul 2, 2025

Transduction and Expansion of Primary T Cells in Nine Days with Maintenance of Central Memory Phenotype
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Durable CD4+ T cell immunity: cherchez la stem.

Erik P Hughes1, Amber R Syage1, Dean Tantin1

  • 1Department of Pathology, University of Utah School of Medicine, Salt Lake City, UT 84112, USA; Huntsman Cancer Institute, University of Utah School of Medicine, Salt Lake City, UT 84112, USA.

Trends in Immunology
|February 22, 2024
PubMed
Summary
This summary is machine-generated.

This study proposes using established stem cell properties to better understand

Keywords:
CD4(+) T cellsantitumor immunityautoimmunityimmune memory

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Area of Science:

  • Immunology
  • Stem Cell Biology

Background:

  • Mammalian stem cells are crucial for development and tissue repair.
  • The term 'stem-like' is increasingly applied to T cells, but definitions vary.
  • This ambiguity complicates the interpretation of T cell functions in immunity and disease.

Purpose of the Study:

  • To establish a framework for evaluating 'stem-like' T cells.
  • To compare properties of stem cells with those of 'stem-like' CD4+ T cell populations.

Main Methods:

  • Review of established stem cell characteristics.
  • Comparative analysis of stem cell properties against literature describing 'stem-like' T cells.

Main Results:

  • Widely accepted stem cell properties were outlined.
  • These properties were systematically compared to diverse 'stem-like' CD4+ T cell populations described in scientific literature.

Conclusions:

  • Applying stem cell frameworks can organize and clarify the study of 'stem-like' T cells.
  • This approach aids in understanding T cell roles in infection, antitumor immunity, and autoimmunity.