Acta Agriculturae Zhejiangensis ›› 2021, Vol. 33 ›› Issue (11): 2026-2033.DOI: 10.3969/j.issn.1004-1524.2021.11.04

• Animal Science • Previous Articles     Next Articles

Effect of vitamin A on barrier function damage of piglet intestinal epithelial cells induced by soybean 7S globulin

YANG Ju(), DENG Junliang*(), XIA Jiangying, SONG Tianhao, PANG Lianfeng, REN Zhihua   

  1. College of Veterinary Medicine/Key Laboratory of Animal Disease and Human Health of Sichuan Province/Key Laboratory of Environmental Hazards and Animal Diseases of Sichuan Province Colleges and Universities, Sichuan Agriculture University, Chengdu 611130, China
  • Received:2021-01-08 Online:2021-11-25 Published:2021-11-26
  • Contact: DENG Junliang

Abstract:

To explore effect of vitamin A (VA) on barrier function damage of piglet intestinal epithelial cells (IPEC-J2) induced by soybean 7S globulin, took IPEC-J2 as the research object and soybean 7S globulin as the inducing factor, cell viability, trans-epithelial electrical resistance (TEER), permeability of sodium fluorescein, cell membrane integrity related indicators and tight junction protein mRNA expression were assessed. The results showed that 5 mg·mL-1 soybean 7S globulin caused IPEC-J2 viability, TEER, ZO-1, Claudin-1 and Occludin mRNA expression significantly reduced (P<0.01), and permeability of fluorescein sodium, content of alkaline phosphatase (ALP), lactate dehydrogenase (LDH), diamine oxidase (DAO) and intestinal fatty acid binding protein 1 (IFABP1) in the cell culture fluid significantly increased (P<0.01). 0.1 and 1 μmol·L -1 VA could significantly protect cell viability (P<0.01), 0.1-10 μmol·L-1 VA could significantly (P<0.05) alleviate the changes of TEER, fluorescein sodium permeability, cell membrane integrity related indicators and tight junction protein mRNA expression caused by 7S globulin; 10 000 μmol·L-1 VA exacerbated these effects. The results indicated that 0.1-10 μmol·L-1 VA could protect the cell barrier function of IPEC-J2 caused by soybean 7S globulin through protecting cell viability and cell integrity, and affecting expression of tight junction protein mRNA. However, 10 000 μmol·L-1 VA aggravated this damage.

Key words: soybean 7S globulin, vitamin A, piglet intestinal epithelial cell, permeability, tight junction protein

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