Epitopes described in "A functional and structural basis for TCR cross-reactivity in multiple sclerosis."

Article Authors:Heather L E Lang; Helle Jacobsen; Shinji Ikemizu; Christina Andersson; Karl Harlos; Lars Madsen; Peter Hjorth; Leif Sondergaard; Arne Svejgaard; Kai Wucherpfennig; David I Stuart; John I Bell; E Yvonne Jones; Lars Fugger
Article Title:A functional and structural basis for TCR cross-reactivity in multiple sclerosis.
Reference Detail
Reference ID:1004683
Abstract:The multiple sclerosis (MS)-associated HLA major histocompatibility complex (MHC) class II alleles DRB1*1501, DRB5*0101 and DQB1*0602 are in strong linkage disequilibrium, making it difficult to determine which is the principal MS risk gene. Here we show that together the DRB1 and DRB5 loci may influence susceptibility to MS. We demonstrate that a T cell receptor (TCR) from an MS patient recognized both a DRB1*1501-restricted myelin basic protein (MBP) and DRB5*0101-restricted Epstein-Barr virus (EBV) peptide. Crystal structure determination of the DRB5*0101-EBV peptide complex revealed a marked degree of structural equivalence to the DRB1*1501-MBP peptide complex at the surface presented for TCR recognition. This provides structural evidence for molecular mimicry involving HLA molecules. The structural details suggest an explanation for the preponderance of MHC class II associations in HLA-associated diseases.
Affiliations:Nuffield Department of Clinical Medicine, John Radcliffe Hospital, Headington, Oxford OX3 9DU, UK.
Reference Type:Literature
PubMed ID:12244309
Journal:Nat Immunol
Journal Volume:3
Article Pages:940-3
Journal ISSN:1529-2908
Article Chemical List:HLA-DR Antigens;HLA-DRB1 Chains;HLA-DRB5 Chains;Myelin Basic Protein;Receptors, Antigen, T-Cell, alpha-beta
Article MeSH List:Animals; B-Lymphocytes(cytology; immunology); Cell Line; Cross Reactions; Crystallography, X-Ray; HLA-DR Antigens(chemistry; immunology); HLA-DRB1 Chains; HLA-DRB5 Chains; Herpesvirus 4, Human(immunology); Humans; Mice; Mice, Transgenic; Models, Molecular; Multiple Sclerosis(immunology); Myelin Basic Protein(chemistry; immunology); Protein Structure, Tertiary; Receptors, Antigen, T-Cell, alpha-beta(genetics; immunology)
Curation Last Updated:2014-10-03 20:34:43