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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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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.
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Author Spotlight: Achieving High-Purity In Vitro Differentiation of Th17 Cells Using Cytokine Concentration Modulation
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TH17 cell immune adaptation.

Theodora Agalioti1, Filippo Cortesi1, Nicola Gagliani2

  • 1Department of General, Visceral and Thoracic Surgery, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany.

Current Opinion in Immunology
|May 12, 2023
PubMed
Summary
This summary is machine-generated.

T helper 17 (TH17) cell plasticity, or environmental immune adaptation, is crucial for tissue homeostasis. Dysregulation of TH17 cell adaptability contributes to inflammatory diseases and cancer.

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Area of Science:

  • Immunology
  • Cellular Biology
  • Molecular Mechanisms

Background:

  • T helper 17 (TH17) cells are critical for maintaining tissue homeostasis at mucosal barriers.
  • Their functional plasticity, termed environmental immune adaptation, allows them to shift between pro-inflammatory and anti-inflammatory states based on the microenvironment.
  • This adaptability is essential for immune responses but can lead to pathology if dysregulated.

Purpose of the Study:

  • To summarize the role of TH17 cell plasticity in inflammatory diseases and cancer.
  • To review recent discoveries and ongoing controversies regarding the mechanisms controlling TH17 cell adaptability.
  • To highlight the significance of environmental immune adaptation in immune-mediated conditions.

Main Methods:

  • Literature review and synthesis of current research on TH17 cell plasticity.
  • Analysis of molecular, transcriptional, and metabolic mechanisms governing TH17 cell adaptation.
  • Discussion of the implications of TH17 cell dysfunction in disease pathogenesis.

Main Results:

  • TH17 cell plasticity is a key determinant of immune responses at mucosal sites.
  • Environmental factors significantly influence TH17 cell function, impacting tissue homeostasis.
  • Disruptions in TH17 cell adaptation are linked to immune-mediated inflammatory diseases and cancer development.

Conclusions:

  • Understanding TH17 cell environmental immune adaptation is vital for comprehending inflammatory diseases and cancer.
  • Further research into the complex molecular and metabolic mechanisms controlling TH17 cell plasticity is warranted.
  • Targeting TH17 cell adaptability may offer therapeutic strategies for immune-related pathologies.