Article (Scientific journals)
Gallic acid mitigates LPS-induced inflammatory response via suppressing NF-κB signalling pathway in IPEC-J2 cells.
Cai, Long; Wei, Zixi; Zhao, Xuemei et al.
2022In Journal of Animal Physiology and Animal Nutrition, 106 (5), p. 1000 - 1008
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Keywords :
IPEC-J2 cells; LPS; anti-inflammation; barrier function; gallic acid; Lipopolysaccharides; NF-kappa B; Occludin; Tight Junction Proteins; Gallic Acid; Animals; Epithelial Cells; Gallic Acid/metabolism; Gallic Acid/pharmacology; Intestinal Mucosa; Occludin/genetics; Swine; Tight Junction Proteins/metabolism; Lipopolysaccharides/toxicity; NF-kappa B/genetics; NF-kappa B/metabolism; Food Animals; Animal Science and Zoology
Abstract :
[en] Gallic acid is a phenolic compound that exhibits antibacterial, antioxidative and anti-inflammatory functions. In a previous study, we found that dietary supplementation with gallic acid decreased incidence of diarrhoea and protected intestinal integrity in weaning piglets. However, the underlying mechanism remains unclear. Here, a pig intestinal epithelial cell line (IPEC-J2) was used as an in vitro model to explore the antioxidant and anti-inflammatory capacity of gallic acid. IPEC-J2 cells were stimulated with hydrogen peroxide (H2 O2 ) and lipopolysaccharide (LPS) to establish oxidative and inflammatory models, respectively. Results showed that H2 O2 significantly decreased catalase (CAT) secretion and CAT mRNA abundance in the cells (p < 0.05), while pretreatment with gallic acid did not prevent the decrease in CAT expression induced by H2 O2 . However, gallic acid pretreatment mitigated the increased expression of the tumour necrosis factor-α and interleukin-8 genes caused by LPS in IPEC-J2 cells (p < 0.05). In addition, pretreatment with gallic acid significantly suppressed phosphorylation of NF-κB and IκBα in LPS-stimulated IPEC-J2 cells. Moreover, LPS stimulation decreased the protein abundance of zona occludens 1 (ZO-1) and occludin, while pretreatment with gallic acid preserved expression level of tight junction proteins ZO-1 and occludin in LPS-stimulated IPEC-J2 cells (p < 0.05). In conclusion, gallic acid may mitigate LPS-induced inflammatory responses by inhibiting the NF-κB signalling pathway, exerting positive effects on the barrier function of IPEC-J2 cells.
Disciplines :
Agriculture & agronomy
Author, co-author :
Cai, Long ;  Key Laboratory of Feed Biotechnology of Ministry of Agriculture and Rural Affairs, Institute of Feed Research, Chinese Academy of Agricultural Sciences, Beijing, China
Wei, Zixi  ;  Université de Liège - ULiège > TERRA Research Centre ; Key Laboratory of Feed Biotechnology of Ministry of Agriculture and Rural Affairs, Institute of Feed Research, Chinese Academy of Agricultural Sciences, Beijing, China
Zhao, Xuemei ;  Université de Liège - ULiège > TERRA Research Centre ; Key Laboratory of Feed Biotechnology of Ministry of Agriculture and Rural Affairs, Institute of Feed Research, Chinese Academy of Agricultural Sciences, Beijing, China
Li, Yanpin;  Key Laboratory of Feed Biotechnology of Ministry of Agriculture and Rural Affairs, Institute of Feed Research, Chinese Academy of Agricultural Sciences, Beijing, China
Li, Xilong;  Key Laboratory of Feed Biotechnology of Ministry of Agriculture and Rural Affairs, Institute of Feed Research, Chinese Academy of Agricultural Sciences, Beijing, China
Jiang, Xianren ;  Key Laboratory of Feed Biotechnology of Ministry of Agriculture and Rural Affairs, Institute of Feed Research, Chinese Academy of Agricultural Sciences, Beijing, China
 These authors have contributed equally to this work.
Language :
English
Title :
Gallic acid mitigates LPS-induced inflammatory response via suppressing NF-κB signalling pathway in IPEC-J2 cells.
Publication date :
September 2022
Journal title :
Journal of Animal Physiology and Animal Nutrition
ISSN :
0931-2439
eISSN :
1439-0396
Publisher :
John Wiley and Sons Inc, Germany
Volume :
106
Issue :
5
Pages :
1000 - 1008
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
CAAS - Chinese Academy of Agricultural Sciences [CN]
Funding text :
This work was financially supported by the National Key Research and Development Program of China (2018YFD0500600), the Beijing Natural Science Foundation (6174049), and the Elite Youth Program of Chinese Academy of Agricultural Sciences (to X.L. Li).
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