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Deprecated: Implicit conversion from float 300.79999999999995 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Sci+Rep 2018 ; 8 (ä): ä Nephropedia Template TP
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P31?43, an undigested gliadin peptide, mimics and enhances the innate immune response to viruses and interferes with endocytic trafficking: a role in celiac disease #MMPMID30018339
Nanayakkara M; Lania G; Maglio M; Auricchio R; De Musis C; Discepolo V; Miele E; Jabri B; Troncone R; Auricchio S; Barone MV
Sci Rep 2018[]; 8 (ä): ä PMID30018339show ga
Celiac disease (CD) is an autoimmune disease characterized by inflammation of the intestinal mucosa due to an immune response to wheat gliadins. Some gliadin peptides are resistant to intestinal digestion (e.g., A-gliadin P31?43) and induce a stress/innate immune response, but the reason why they are dangerous in the intestines of patients with CD is unknown. In the present study, P31?43 activated IFN-?, a mediator of the innate immune response in CD, in the intestine of subjects with CD and an enterocyte cell line, CaCo-2. P31?43 cooperated with a viral ligand to activate the TLR7 pathway by interfering with endocytic trafficking. Based on these results, the vesicular pathway regulates the innate/inflammatory response to viral ligands and bioactive dietary peptides. Suggesting that together with viral infections, alimentary proteins able to mimic and potentiate the innate immune response to viruses, can trigger an autoimmune disease such as CD.