Impact of Endoplasmic Reticulum Stress Signaling on Intestinal Barrier Function in Pigs: A Review

  • JIN Yuhang ,
  • JIA Hai ,
  • WANG Renjie ,
  • WU Zhenlong
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  • College of Animal Science and Technology, China Agricultural University, Beijing 100193, China

Received date: 2020-10-31

  Online published: 2021-06-10

Abstract

The endoplasmic reticulum is the main site for the modification, folding, and processing of newly synthesized proteins in the mammalian cells. Accumulation of unfolded or misfolded proteins in the endoplasmic reticulum lumen in response to various stimuli can activate the endoplasmic reticulum (ER) stress signaling to restore intestinal homeostasis by reducing the synthesis of proteins or promoting the folding capacity. Therefore, the endoplasmic reticulum stress signallng is an adaptive response of cells to unfavorable external environment. In response to severe endoplasmic reticulum stress, apoptosis is activated to eliminate unfolded or misfolded proteins. Recent studies have shown that intestinal barrier dysfunction in weanling piglets is accompanied by upregulation of proteins implicated in unfolded protein response. Supplementation with amino acid or other additions can restore intestinal epithelial barrier function by regulating proteins implicated in the endoplasmic reticulum stress signaling. In this article, we summarized recent studies on the intestinal health of piglets, especially these associated with ER stress, which might advance our understanding of mechanisms related to the dysfunction of mucosal barrier in piglets.

Cite this article

JIN Yuhang , JIA Hai , WANG Renjie , WU Zhenlong . Impact of Endoplasmic Reticulum Stress Signaling on Intestinal Barrier Function in Pigs: A Review[J]. Chinese Journal of Animal Nutrition, 2021 , 33(6) : 3072 -3080 . DOI: 10.3969/j.issn.1006-267x.2021.06.009

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