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- W2000533294 abstract "CD is unique among the HLA-associated diseases since (a) the disease-promoting agent (gliadin) is known and (b) the disease is precipitated mainly in individuals carrying a particular cis- or trans-encoded HLA-DQ heterodimer; i.e., DQ(alpha 1*0501, beta 1*0201). Further, a preponderance of gliadin-specific T cells derived from the small intestinal mucosa of CD patients are restricted by this DQ heterodimer. T-cell recognition of gliadin peptides presented by the DQ(alpha 1*0501, beta 1*0201) heterodimer may thus be of importance in CD. Here we report that a T-cell clone from a patient with CD recognizes a synthetic alpha-gliadin peptide, when presented by the cis- or trans-encoded CD-associated DQ(alpha 1*0501, beta 1*0201) heterodimer. The minimal peptide recognized by the T-cell clone corresponds to residues 31-47 of alpha-gliadin, which is included in the part of alpha-gliadin previously shown to have disease-promoting activity. When testing analogue peptides derived from other alpha-gliadin sequences, one peptide differing by one amino acid was recognized by the T-cell clone, whereas the other peptide differing by two amino acids was not recognized. Our findings demonstrate that the CD-associated DQ(alpha 1*0501, beta 1*0201) heterodimer may serve as an antigen-presenting molecule to T cells for certain gliadin peptides." @default.
- W2000533294 created "2016-06-24" @default.
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- W2000533294 date "1994-04-01" @default.
- W2000533294 modified "2023-09-27" @default.
- W2000533294 title "T cells recognize a peptide derived from α-gliadin presented by the celiac disease-associated HLA-DQ (α1∗0501, β1∗0201) heterodimer" @default.
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- W2000533294 doi "https://doi.org/10.1016/0198-8859(94)90267-4" @default.
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