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Title

Stimulatory Response of Celiac Disease Peripheral Blood Mononuclear Cells Induced by RNAi Wheat Lines Differing in Grain Protein Composition

AuthorsSánchez-León, Susana; Giménez, María J. CSIC ORCID; Comino, Isabel; Sousa Martín, Carolina; López-Casado, Miguel Ángel; Torres, María Isabel; Barro Losada, Francisco CSIC ORCID
KeywordsPBMCs
RNAi
Low-gluten wheat
Celiac disease
NCWS
Issue Date2019
PublisherMultidisciplinary Digital Publishing Institute
CitationNutrients 11(12): 2933 (2019)
AbstractWheat gluten proteins are responsible for the bread-making properties of the dough but also for triggering important gastrointestinal disorders. Celiac disease (CD) affects approximately 1% of the population in Western countries. The only treatment available is the strict avoidance of gluten in the diet. Interference RNA (RNAi) is an excellent approach for the down-regulation of genes coding for immunogenic proteins related to celiac disease, providing an alternative for the development of cereals suitable for CD patients. In the present work, we report a comparative study of the stimulatory capacity of seven low-gluten RNAi lines differing in grain gluten and non-gluten protein composition, relevant for CD and other gluten pathologies. Peripheral blood mononuclear cells (PBMCs) of 35 patients with active CD were included in this study to assess the stimulatory response induced by protein extracts from the RNAi lines. Analysis of the proliferative response and interferon-gamma (INF-γ) release of PBMCs demonstrated impaired stimulation in response to all RNAi lines. The lower response was provided by lines with a very low content of α- and γ-gliadins, and low or almost devoid of DQ2.5 and p31–43 α-gliadin epitopes. The non-gluten protein seems not to play a key role in PBMC stimulation.
Description© 2019 by the authors.
Publisher version (URL)https://doi.org/10.3390/nu11122933
URIhttp://hdl.handle.net/10261/197171
DOI10.3390/nu11122933
E-ISSN2072-6643
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