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Baicalin Alleviates LPS-Induced Oxidative Stress via NF-κB and Nrf2–HO1 Signaling Pathways in IPEC-J2 Cells

Authors :
Minglong Bao
Mei Liang
Xinyi Sun
Sahar Ghulam Mohyuddin
Shengwei Chen
Jiaying Wen
Yanhong Yong
Xingbin Ma
Zhichao Yu
Xianghong Ju
Xiaoxi Liu
Source :
Frontiers in Veterinary Science, Vol 8 (2022)
Publication Year :
2022
Publisher :
Frontiers Media S.A., 2022.

Abstract

Baicalin is a natural plant extract with anti-inflammatory and anti-oxidant activities. However, the molecular mechanism of baicalin on oxidative stress in IPEC-J2 cells exposed to LPS remains to be unclear. In this study, LPS stimulation significantly increased Toll-like receptor 4, tumor necrosis factor-α, and interleukins (IL-6 and IL-1β) expression in IPEC-J2 cells, and it activated the nuclear factor (NF-κB) expression. While, baicalin exerted anti-inflammatory effects by inhibiting NF-κB signaling pathway. LPS stimulation significantly increased the levels of the oxidative stress marker MDA, inhibited the anti-oxidant enzymes catalase and superoxide dismutase, which were all reversed by baicalin pre-treatment. It was found that baicalin treatment activated the nuclear import of nuclear factor-erythroid 2 related factor 2 (Nrf2) protein, and significantly increased the mRNA and protein expression of its downstream anti-oxidant factors such as heme oxygenase-1 and quinone oxidoreductase-1, which suggested that baicalin exerted anti-oxidant effects by activating the Nrf2-HO1 signaling pathway. Thus, pretreatment with baicalin inhibited LPS - induced oxidative stress and protected the normal physiological function of IPEC-J2 cells via NF-κB and Nrf2–HO1 signaling pathways.

Details

Language :
English
ISSN :
22971769
Volume :
8
Database :
Directory of Open Access Journals
Journal :
Frontiers in Veterinary Science
Publication Type :
Academic Journal
Accession number :
edsdoj.891940370bfc47afbc7bf3db11504278
Document Type :
article
Full Text :
https://doi.org/10.3389/fvets.2021.808233