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[Immunoregulation and autoimmunity].

Jean-François Bach1

  • 1INSERM U25, Hôpital Necker, 161, rue de Sèvres, 75743 Paris.

Journal De La Societe De Biologie
|March 21, 2003
PubMed
Summary

Regulatory T cells are crucial for peripheral tolerance and can be classified into two main categories based on their antigen-dependent or independent activation. These distinct regulatory T cell types represent promising therapeutic targets for immune system modulation.

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Revisiting the Hygiene Hypothesis in the Context of Autoimmunity.

Frontiers in immunology·2021

Area of Science:

  • Immunology
  • Cell Biology

Context:

  • Peripheral tolerance is essential for preventing autoimmune diseases and managing immune responses to foreign antigens.
  • Regulatory T cells (Tregs) play a critical role in maintaining this tolerance.
  • Existing research suggests a diverse population of Tregs with varying activation mechanisms.

Purpose:

  • To investigate and classify the different types of regulatory T cells involved in peripheral tolerance.
  • To understand the phenotypes, cytokine dependencies, and activation triggers of these Treg subsets.
  • To identify potential therapeutic targets within the Treg population.

Summary:

  • Regulatory T cells are classified into two categories: those activated independently of deliberate antigen administration (e.g., CD25+ T cells, NKT cells, gamma/delta cells) and those activated exclusively in response to introduced antigens (e.g., Th2 cells, Tr1 cells).
  • This classification is based on the investigation of Treg phenotypes, cytokine requirements, and activation circumstances.
  • Both innate and adaptive immunity-related Treg subsets are identified.

Impact:

  • The identified regulatory T cell subsets offer novel therapeutic targets for immune-related disorders.
  • Understanding Treg heterogeneity can lead to more precise immunomodulatory therapies.
  • This research contributes to the development of targeted treatments for autoimmune diseases and allergies.

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