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Related Concept Videos

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.
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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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Cytotoxic T Cells-mediated Immune Response01:27

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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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B Cell Activation and Differentiation01:24

B Cell Activation and Differentiation

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The adaptive immune response, a sophisticated defense mechanism, relies on the activation and differentiation of B lymphocytes, or B cells. These processes enable our bodies to mount a tailored response against specific pathogens such as bacteria, free virus particles, toxins, and parasites.
When naive B cells encounter a specific antigen that can bind to the B cell receptor (BCR) on their surface, they undergo sensitization to respond to the antigen's presence. Sensitization begins with...
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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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Special Features of Adaptive Immunity01:20

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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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Isolation and Ex Vivo Culture of Vδ1+CD4+γδ T Cells, an Extrathymic αβT-cell Progenitor

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Development and function of γδ T cells.

Igor Bychkov1, David L Wiest1

  • 1Nuclear Dynamics and Cancer Program, Fox Chase Cancer Center, Philadelphia, PA, United States.

International Review of Cell and Molecular Biology
|October 29, 2025
PubMed
Summary
This summary is machine-generated.

Gamma delta T (γδ T) cells, though discovered 40 years ago, are now recognized for their crucial roles in host defense, tissue integrity, and cancer treatment, bridging innate and adaptive immunity.

Keywords:
AutoimmunityCancerDevelopmentFunctionTherapyγδ T cells

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Area of Science:

  • Immunology
  • Cell Biology
  • Host Defense

Background:

  • The role of alpha beta T (αβ T) cells in host defense is well-established, while the functions of gamma delta T (γδ T) cells have been less understood despite their discovery ~40 years ago.
  • Historically, γδ T cells were overlooked due to their small numbers in immune organs, leading to diminished research interest.
  • Recent research has highlighted the significant and diverse roles of γδ T cells in human health and disease.

Purpose of the Study:

  • To review the recent advancements in understanding the multifaceted roles of γδ T cells.
  • To explore how γδ T cells contribute to both promoting health and causing disease.
  • To discuss the emerging applications of γδ T cells in cancer therapy.

Main Methods:

  • Literature review of recent immunological research.
  • Analysis of studies investigating γδ T cell functions in homeostasis, pathogen resistance, and disease.
  • Examination of preclinical and clinical data on γδ T cell-based cancer treatments.

Main Results:

  • γδ T cells are crucial for tissue homeostasis, integrity, and pathogen resistance, acting at the interface of innate and adaptive immunity.
  • These cells can both protect against and contribute to disease pathogenesis.
  • γδ T cells show promise as a novel therapeutic strategy for cancer treatment.

Conclusions:

  • γδ T cells play a central role in human health and disease, with functions extending beyond pathogen resistance.
  • Their unique position in the immune system makes them critical regulators of tissue health.
  • Exploiting γδ T cells offers a promising avenue for developing more effective cancer immunotherapies.