Prolyl endopeptidase-degraded low immunoreactive wheat flour attenuates immune responses in Caco-2 intestinal cells and gluten-sensitized BALB/c mice.

Mohan Kumar, B. V. and Vijaykrishnaraj, M. and Kurrey, N. K. and Vijay Sukhdeo, Shinde and Prabhasankar, P. (2019) Prolyl endopeptidase-degraded low immunoreactive wheat flour attenuates immune responses in Caco-2 intestinal cells and gluten-sensitized BALB/c mice. Food and Chemical Toxicology, 129. pp. 466-475.

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Abstract

Targeted degrading Aspergillus niger-derived prolyl endopeptidase (AN-PEP) is promising in gluten hydrolysis because it specifically cleaves the proline-rich sites in gluten. The current study aims to understand the safety aspects of AN-PEP hydrolysed low immunoreactive wheat flours by testing immune responses using cell line and animal models. In the AN-PEP hydrolysed wheat flour (AN-PEP HWF) gliadin extract, there was no increase in the levels of zonulin-1 (Zo-1) and pro-inflammatory cytokines (IL-6 and IL-8) but a significant increase was noted in the control wheat flour (CWF) gliadin-treated Caco-2 cells. The Zo-1 localization in Caco-2 cells was significantly noted in the reacted positive fluorescence cells that were treated with the control wheat flour. Further, a safety evaluation of HWF was carried out in gluten-sensitized BALB/c mice. Mouse anti-gliadin (IgG, IgA and IgE) antibodies were significantly generated in the CWF treated animals rather than the AN-PEP HWF groups. The serum pro-inflammatory (IL-1β, IL-4, IL-6, IL-15, TNF-α and IFN-γ) markers were observed in significant levels in CWF challenged mice and a similar trend was observed in ex-vivo splenocyte cells. A small intestine histopathological sectioning revealed that there are no abnormalities or structural changes in AN-PEP HWF challenged mice.

Item Type:	Article
Uncontrolled Keywords:	Gluten Gliadin Immunofluorescence AN-PEP Caco-2 BALB/C mice
Subjects:	600 Technology > 08 Food technology > 21 Cereals > 04 Wheat
Divisions:	Dept. of Biochemistry Flour Milling Bakery and Confectionary Technology
Depositing User:	Food Sci. & Technol. Information Services
Date Deposited:	23 Nov 2020 10:56
Last Modified:	23 Nov 2020 10:56
URI:	http://ir.cftri.res.in/id/eprint/14619

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