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MHC class II proteins and disease: a structural perspective.

E Yvonne Jones1, Lars Fugger, Jack L Strominger

  • 1Division of Structural Biology, The Henry Wellcome Building for Genomic Medicine, The University of Oxford, Roosevelt Drive, Oxford, OX3 7BN, UK. yvonne@strubi.ox.ac.uk

Nature Reviews. Immunology
|March 25, 2006
PubMed
Summary

Major histocompatibility complex (MHC) class II molecules are key to adaptive immunity and implicated in autoimmune diseases like type 1 diabetes. Crystal structures reveal how sequence variations in MHC class II influence disease susceptibility.

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Area of Science:

  • Immunology
  • Structural Biology
  • Genetics

Background:

  • MHC class II molecules present peptides to CD4+ T helper cells, crucial for adaptive immunity.
  • Genetic and epidemiological studies link MHC class II to autoimmune disease pathogenesis, notably type 1 diabetes.
  • Specific MHC class II alleles are significant genetic risk factors for autoimmune disorders.

Purpose of the Study:

  • To explore the role of MHC class II structure in autoimmune disease susceptibility.
  • To understand how sequence polymorphisms in MHC class II contribute to disease.

Main Methods:

  • Analysis of crystal structures of MHC class II molecules.
  • Investigating the molecular mechanisms underlying disease association.

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Main Results:

  • Structural insights into peptide binding and T-cell receptor interaction.
  • Elucidation of how sequence variations affect MHC class II function and disease risk.

Conclusions:

  • MHC class II crystal structures provide critical understanding of autoimmune disease mechanisms.
  • Sequence polymorphisms in MHC class II are directly linked to disease susceptibility through structural pathways.