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[Systemic lupus erythematosus and nucleosome].

Masaya Mukai1

  • 1Division of Rheumatology and Hematology, Department of Medicine, Sapporo City General Hospital.

Nihon Rinsho Men'Eki Gakkai Kaishi = Japanese Journal of Clinical Immunology
|July 5, 2006
PubMed
Summary

Nucleosomes play a key role in systemic lupus erythematosus (SLE) pathogenesis. Elevated nucleosome levels and anti-nucleosome antibodies are linked to SLE activity and kidney damage.

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Area of Science:

  • Immunology
  • Molecular Biology
  • Rheumatology

Context:

  • Systemic lupus erythematosus (SLE) is an autoimmune disease characterized by increased apoptosis.
  • Nucleosomes, complexes of DNA and histones, are released during apoptosis.
  • Elevated nucleosome levels are observed in SLE patients, correlating with disease activity.

Purpose:

  • To review the role of nucleosomes in the pathogenesis of systemic lupus erythematosus (SLE).
  • To explore the diagnostic and activity-marking potential of anti-nucleosome antibodies in SLE.
  • To investigate the contribution of hepatocyte apoptosis to nucleosome release in SLE.

Summary:

  • Nucleosomes are implicated in SLE pathogenesis, with increased levels and immunogenic modifications observed.
  • Anti-nucleosome antibodies are highly specific markers for SLE diagnosis and activity, forming immune complexes that can lead to lupus nephritis.
  • While lymphocyte apoptosis is a primary source, hepatocyte apoptosis may also contribute to nucleosome release in active SLE.

Impact:

  • Highlights nucleosomes and anti-nucleosome antibodies as crucial biomarkers for SLE diagnosis and monitoring.
  • Elucidates the mechanism of lupus nephritis development involving nucleosome-antibody complexes.
  • Suggests potential alternative sources of nucleosomes in SLE, broadening understanding of the disease.

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