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[T cell tolerance and autoimmune disease]

S Kobayashi1

  • 1Department of Laboratory Technology, College of Medical Technology, Hokkaido University.

Nihon Rinsho. Japanese Journal of Clinical Medicine
|June 1, 1997
PubMed
Summary

T cell tolerance mechanisms normally prevent autoimmunity. This review explores how these systems can fail, leading to autoimmune diseases, and discusses potential therapeutic interventions.

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Area of Science:

  • Immunology
  • Molecular Biology
  • Autoimmunity

Context:

  • T cell tolerance is crucial for preventing autoimmune diseases.
  • Multiple fail-safe mechanisms maintain T cell tolerance in the thymus and periphery.
  • The breakdown of these tolerance mechanisms remains incompletely understood.

Purpose:

  • To review the molecular mechanisms underlying T cell tolerance breakdown.
  • To discuss the role of Fas/FasL and CTLA-4 in T cell tolerance.
  • To explore the implications for autoimmune disease pathogenesis and therapeutic strategies.

Summary:

  • T cell tolerance involves thymic clonal deletion and peripheral mechanisms like anergy, activation-induced cell death, and suppression.
  • Mutant mice (Fas/FasL, CTLA-4 knockout) offer insights into tolerance breakdown.
  • The precise contribution of these pathways to major autoimmune diseases is still debated.

Impact:

  • Understanding tolerance breakdown is key to developing novel autoimmune disease therapies.
  • Targeting specific molecular pathways may offer new avenues for immune intervention.
  • This review highlights the complexity of maintaining immune homeostasis.

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