Two novel HLA-DQ2.5-restricted gluten T cell epitopes in the DQ2.5-glia-γ4 epitope family.

Abstract:

:Celiac disease is a chronic inflammatory condition of the small intestine caused by aberrant adaptive immune response to gluten protein from wheat and related cereal plants. Over 90% of celiac disease patients carry the HLA-DQ2.5 allotype and HLA-DQ2.5 presents gluten peptides to gluten-reactive CD4+ T cells in celiac disease patients. A large number of HLA-DQ2.5-restricted gluten T cell epitopes have been identified over the years. These epitopes are in general proline-rich and contain at least one glutamic acid residue that is generated from glutamine in the native gluten protein by deamidation. The deamidation is mediated by the enzyme transglutaminase 2 (TG2). It has been shown that the same T cell could recognize several different HLA-DQ2.5-restricted gluten T cell epitopes due to sequence similarities. In this paper, we demonstrate that three T cell clones derived from duodenal biopsies of different celiac disease patients are able to respond to at least five different gluten T cell epitopes within the DQ2.5-glia-γ4 epitope family, including two novel epitopes.

journal_name

Immunogenetics

journal_title

Immunogenetics

authors

Qiao SW,Sollid LM

doi

10.1007/s00251-019-01138-5

subject

Has Abstract

pub_date

2019-11-01 00:00:00

pages

665-667

issue

10

eissn

0093-7711

issn

1432-1211

pii

10.1007/s00251-019-01138-5

journal_volume

71

pub_type

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