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Related Experiment Videos

Pathogenesis of ankylosing spondylitis: current concepts.

Judith A Smith1, Elisabeth Märker-Hermann, Robert A Colbert

  • 1Section of Rheumatology and Clinical Immunology, Department of Internal Medicine Dr. Horst Schmidt kliniken GmbH, Aukammallee 39 65191 Wiesbaden, Germany.

Best Practice & Research. Clinical Rheumatology
|June 17, 2006
PubMed
Summary

The human leukocyte antigen B27 (HLA-B27) gene is linked to ankylosing spondylitis, but its exact role in disease pathogenesis is still unclear. Research suggests HLA-B27 may trigger inflammation through various immune responses and protein misfolding.

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Area of Science:

  • Immunology
  • Genetics
  • Rheumatology

Background:

  • The human leukocyte antigen B27 (HLA-B27) gene is a key genetic factor associated with ankylosing spondylitis.
  • Despite decades of research, the precise mechanisms by which HLA-B27 contributes to disease pathogenesis remain incompletely understood.

Purpose of the Study:

  • To review current data and concepts regarding the role of HLA-B27 in the pathogenesis of ankylosing spondylitis.
  • To explore various proposed mechanisms, including immune recognition and endoplasmic reticulum stress.

Main Methods:

  • Review of existing literature and animal model studies.
  • Analysis of patient-derived materials to investigate immune responses.
  • Examination of the impact of HLA-B27 protein misfolding and the unfolded protein response.

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Main Results:

  • Overexpression of HLA-B27 in animal models can induce spondyloarthritis-like inflammatory disease.
  • Both innate and adaptive immune responses, as well as gastrointestinal inflammation, are implicated in disease development.
  • HLA-B27 heavy chain misfolding and subsequent endoplasmic reticulum stress activate the unfolded protein response, offering alternative pathogenic concepts.

Conclusions:

  • The exact role of HLA-B27 in ankylosing spondylitis pathogenesis is still undefined, with multiple potential mechanisms.
  • Emerging concepts focus on protein misfolding, endoplasmic reticulum stress, and the unfolded protein response as key contributors.
  • Further research is needed to elucidate the complex interplay between HLA-B27 and the immune system in driving spondyloarthritis.