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Gliadin intake induces oxidative-stress responses in Caenorhabditis elegans.

Abstract：

:Clinical attention to gluten-related disorders, such as celiac disease and nonceliac gluten sensitivity, is on the rise. However, identifying the pathophysiological mechanisms of gluten-related disorders remains elusive. Gliadin, a component of gluten, is known to play a major role in gluten toxicity. Caenorhabditis elegans has been widely used as the predominant experimental animal model to study toxicity and stress response in biomedical research. We investigated the stress response induced by gliadin intake in C. elegans to evaluate its toxicity and found brood size, body bending, and pumping rates to be significantly altered in response to gliadin. Notably, reactive oxygen species (ROS) production and Pgst-4::GFP transgene expression, an indicator of the oxidative-stress response, were significantly increased after gliadin intake. Reduced pumping rates were most likely caused by gliadin-induced oxidative stress, since pumping rates in oxidative stress-sensitive mev-1 mutants were more severely reduced than in oxidative stress-resistant daf-2 mutants following gliadin intake. Our results indicated that gluten/gliadin intake in C. elegans triggered ROS production and induced an oxidative stress response that reduced pumping rates and decreased brood size. We suggest C. elegans to be a useful model system for studying gluten/gliadin toxicity.

journal_name

Biochem Biophys Res Commun

journal_title

Biochemical and biophysical research communications

authors

Lim SD,Min H,Youn E,Kawasaki I,Shim YH

doi

10.1016/j.bbrc.2018.08.002

subject

Has Abstract

pub_date

2018-09-10 00:00:00

pages

2139-2145

issue

3

eissn

0006-291X

issn

1090-2104

pii

S0006-291X(18)31675-9

journal_volume

503

pub_type

杂志文章

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