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Int. J. Mol. Sci. 2014, 15(2), 1915-1926; doi:10.3390/ijms15021915
Article

β-Conglycinin Reduces the Tight Junction Occludin and ZO-1 Expression in IPEC-J2

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1,2,* , 1
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1 College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China 2 Key Laboratory of Animal Production, Product Quality and Security, Ministry of Education, Jilin Agricultural University, Changchun 130118, China 3 Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, Changchun 130062, China
* Author to whom correspondence should be addressed.
Received: 24 November 2013 / Revised: 12 January 2014 / Accepted: 20 January 2014 / Published: 27 January 2014
(This article belongs to the Section Biochemistry, Molecular Biology and Biophysics)
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Abstract

Soybean allergy presents a health threat to humans and animals. The mechanism by which food/feed allergen β-conglycinin injures the intestinal barrier has not been well understood. In this study, the changes of epithelial permeability, integrity, metabolic activity, the tight junction (TJ) distribution and expression induced by β-conglycinin were evaluated using IPEC-J2 model. The results showed a significant decrease of trans-epithelial electrical resistance (TEER) (p < 0.001) and metabolic activity (p < 0.001) and a remarkable increase of alkaline phosphatase (AP) activity (p < 0.001) in a dose-dependent manner. The expression levels of tight junction occludin and ZO-1 were decreased (p < 0.05). The reduced fluorescence of targets and change of cellular morphology were recorded. The tight junction occludin and ZO-1 mRNA expression linearly declined with increasing β-conglycinin (p < 0.001).
Keywords: β-conglycinin; intestinal barrier; tight junction; food allergen; IPEC-J2 β-conglycinin; intestinal barrier; tight junction; food allergen; IPEC-J2
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).
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Zhao, Y.; Qin, G.; Han, R.; Wang, J.; Zhang, X.; Liu, D. β-Conglycinin Reduces the Tight Junction Occludin and ZO-1 Expression in IPEC-J2. Int. J. Mol. Sci. 2014, 15, 1915-1926.

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