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Related Experiment Videos

Antigen processing gene polymorphisms in HLA-DR2 multiple sclerosis

R Liblau1, P M van Endert, M Sandberg-Wollheim

  • 1Department of Microbiology and Immunology, Stanford University School of Medicine, CA 94305.

Neurology
|June 1, 1993
PubMed
Summary
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This study investigated if genes for antigen processing play a role in multiple sclerosis (MS) susceptibility. Researchers found no evidence linking these specific genes to MS in HLA-DR2 positive individuals.

Area of Science:

  • Immunogenetics
  • Neuroimmunology
  • Molecular Genetics

Background:

  • The human leukocyte antigen (HLA) class II region is strongly associated with multiple sclerosis (MS) susceptibility.
  • The precise MS susceptibility locus within the HLA class II region remains unidentified.
  • Newly cloned antigen processing genes within the HLA class II region warrant investigation for their role in MS.

Purpose of the Study:

  • To investigate the potential role of large multifunctional protease (LMP) 2 and 7, and transporter associated with antigen processing (TAP) 1 and 2 gene polymorphisms in conferring susceptibility to MS.
  • To determine if specific restriction fragment length polymorphism (RFLP) patterns or coding sequence variants in these antigen processing genes are associated with MS in HLA-DR2 positive individuals.

Main Methods:

Related Experiment Videos

  • Employed restriction fragment length polymorphism (RFLP) and sequence-specific oligonucleotide analysis.
  • Genotyped polymorphisms in the large multifunctional protease (LMP) 2 and 7 genes.
  • Genotyped polymorphisms in the transporter associated with antigen processing (TAP) 1 and 2 genes.
  • Studied 60 HLA-DR2 positive MS patients and 60 HLA-DR2 positive healthy controls.

    • Main Results:

    • No specific or preferential RFLP patterns were found in the MS patient group compared to controls.
    • No significant coding sequence variants in LMP 2, LMP 7, TAP 1, or TAP 2 genes were identified in MS patients.
    • The study found no association between the investigated antigen processing gene polymorphisms and MS susceptibility in the studied cohort.

    Conclusions:

    • The findings do not support a role for the investigated large multifunctional protease (LMP) and transporter associated with antigen processing (TAP) genes in multiple sclerosis susceptibility.
    • Further research may be needed to explore other candidate genes within or outside the HLA class II region for their contribution to MS pathogenesis.