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Related Experiment Videos

TNF, apoptosis and autoimmunity: a common thread?

B Beutler1, F Bazzoni

  • 1Howard Hughes Medical Institute, University of Texas Southwestern Medical Center at Dallas 75235-9050, USA. beutler@howie.swmed.edu

Blood Cells, Molecules & Diseases
|July 1, 1998
PubMed
Summary
This summary is machine-generated.

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Defects in apoptosis, a form of programmed cell death, may underlie many autoimmune diseases. Overproduction of tumor necrosis factor (TNF) and related cytokines due to these defects could drive conditions like rheumatoid arthritis.

Area of Science:

  • Immunology
  • Cell Biology
  • Pathophysiology

Background:

  • Tumor necrosis factor (TNF) family cytokines mediate apoptosis via specific receptors and signaling pathways.
  • Autoimmune diseases, such as those involving Fas ligand or receptor mutations, are linked to apoptosis defects.
  • Existing research highlights the role of apoptosis in immune system regulation.

Purpose of the Study:

  • To explore the hypothesis that primary defects in apoptosis contribute to the pathogenesis of autoimmune diseases.
  • To investigate the potential role of dysregulated apoptosis in the overproduction of pro-apoptotic cytokines like TNF.
  • To examine the implications of these mechanisms in complex autoimmune disorders.

Main Methods:

  • Review of current literature on apoptosis, TNF family cytokines, and autoimmune disease mechanisms.

Related Experiment Videos

  • Analysis of signaling pathways involved in TNF-mediated apoptosis.
  • Correlation of apoptosis defects with clinical manifestations in autoimmune conditions.

    • Main Results:

    • Apoptosis defects are implicated in at least one known autoimmune disease.
    • A hypothesis is proposed that widespread apoptosis defects may cause reflexive overproduction of TNF and other pro-apoptotic cytokines.
    • This dysregulation may contribute to the pathology of autoimmune diseases like rheumatoid arthritis and Crohn disease.

    Conclusions:

    • Primary defects in apoptosis are a potential unifying mechanism for many autoimmune diseases.
    • Overproduction of TNF and related cytokines resulting from apoptosis defects may cause significant collateral damage.
    • Targeting TNF is a validated therapeutic strategy, supporting the role of these cytokines in disease pathogenesis.