PMID- 23063329 OWN - NLM STAT- MEDLINE DCOM- 20121227 LR - 20121022 IS - 1097-4180 (Electronic) IS - 1074-7613 (Linking) VI - 37 IP - 4 DP - 2012 Oct 19 TI - Biased T cell receptor usage directed against human leukocyte antigen DQ8-restricted gliadin peptides is associated with celiac disease. PG - 611-21 LID - S1074-7613(12)00419-0 [pii] LID - 10.1016/j.immuni.2012.07.013 [doi] AB - Celiac disease is a human leukocyte antigen (HLA)-DQ2- and/or DQ8-associated T cell-mediated disorder that is induced by dietary gluten. Although it is established how gluten peptides bind HLA-DQ8 and HLA-DQ2, it is unclear how such peptide-HLA complexes are engaged by the T cell receptor (TCR), a recognition event that triggers disease pathology. We show that biased TCR usage (TRBV9( *)01) underpins the recognition of HLA-DQ8-alpha-I-gliadin. The structure of a prototypical TRBV9( *)01-TCR-HLA-DQ8-alpha-I-gliadin complex shows that the TCR docks centrally above HLA-DQ8-alpha-I-gliadin, in which all complementarity-determining region-beta (CDRbeta) loops interact with the gliadin peptide. Mutagenesis at the TRBV9( *)01-TCR-HLA-DQ8-alpha-I-gliadin interface provides an energetic basis for the Vbeta bias. Moreover, CDR3 diversity accounts for TRBV9( *)01(+) TCRs exhibiting differing reactivities toward the gliadin epitopes at various deamidation states. Accordingly, biased TCR usage is an important factor in the pathogenesis of DQ8-mediated celiac disease. CI - Copyright (c) 2012 Elsevier Inc. All rights reserved. FAU - Broughton, Sophie E AU - Broughton SE AD - The Department of Biochemistry and Molecular Biology, School of Biomedical Sciences, Monash University, Clayton, Victoria, Australia. FAU - Petersen, Jan AU - Petersen J FAU - Theodossis, Alex AU - Theodossis A FAU - Scally, Stephen W AU - Scally SW FAU - Loh, Khai Lee AU - Loh KL FAU - Thompson, Allan AU - Thompson A FAU - van Bergen, Jeroen AU - van Bergen J FAU - Kooy-Winkelaar, Yvonne AU - Kooy-Winkelaar Y FAU - Henderson, Kate N AU - Henderson KN FAU - Beddoe, Travis AU - Beddoe T FAU - Tye-Din, Jason A AU - Tye-Din JA FAU - Mannering, Stuart I AU - Mannering SI FAU - Purcell, Anthony W AU - Purcell AW FAU - McCluskey, James AU - McCluskey J FAU - Anderson, Robert P AU - Anderson RP FAU - Koning, Frits AU - Koning F FAU - Reid, Hugh H AU - Reid HH FAU - Rossjohn, Jamie AU - Rossjohn J LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20121011 PL - United States TA - Immunity JT - Immunity JID - 9432918 RN - 0 (Epitopes, T-Lymphocyte) RN - 0 (HLA-DQ Antigens) RN - 0 (HLA-DQ8 antigen) RN - 0 (Peptide Fragments) RN - 0 (Receptors, Antigen, T-Cell) RN - 9007-90-3 (Gliadin) SB - IM MH - Amino Acid Sequence MH - Celiac Disease/*immunology MH - Epitopes, T-Lymphocyte/immunology MH - Gliadin/*immunology MH - HLA-DQ Antigens/chemistry/*immunology MH - Humans MH - Models, Molecular MH - Molecular Sequence Data MH - Peptide Fragments/immunology MH - Protein Interaction Domains and Motifs MH - Receptors, Antigen, T-Cell/chemistry/*immunology EDAT- 2012/10/16 06:00 MHDA- 2012/12/28 06:00 CRDT- 2012/10/16 06:00 PHST- 2011/08/17 00:00 [received] PHST- 2012/07/10 00:00 [accepted] PHST- 2012/10/16 06:00 [entrez] PHST- 2012/10/16 06:00 [pubmed] PHST- 2012/12/28 06:00 [medline] AID - S1074-7613(12)00419-0 [pii] AID - 10.1016/j.immuni.2012.07.013 [doi] PST - ppublish SO - Immunity. 2012 Oct 19;37(4):611-21. doi: 10.1016/j.immuni.2012.07.013. Epub 2012 Oct 11.