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Protective effect and mechanism insight of purified Antarctic krill phospholipids against mice ulcerative colitis combined with bioinformatics |
Rong Huang, Jiaxu Yao, Li Zhou, Xiang Li, Jinrui Zhu, Yueqi Hu, Jikai Liu |
National Demonstration Center for Experimental Ethnopharmacology Education, School of Pharmaceutical Sciences, South-Central MinZu University, Wuhan, 430074, People's Republic of China |
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Abstract Antarctic krill oil is functional oil and has a complex phospholipids composition that poses difficulties in elucidating its effect mechanism on ulcerative colitis (UC). The mechanism of UC action was studied by bioinformatics, and the therapeutic effect of Antarctic krill phospholipids (APL) on dextran sulfate sodium (DSS)-induced colitis mice was verified. GO functional enrichment analysis uncovered an enrichment of these genes in the regulation of cell-cell adhesion, membrane region, signaling receptor activator activity, and cytokine activity. Meanwhile, the KEGG results revealed the genes were enriched in the TNF signaling pathway, pathogenic Escherichia coli infection, inflammatory bowel disease and tight junction. Animal experiments showed that APL treatment alleviated the UC symptoms and reduced inflammatory damage. Meanwhile, the expressions of the tight junction (TJ) proteins, ZO-1 and occludin, were restored, and the levels of IL-6 and TNF-α were reduced. Moreover, Firmicutes/Bacteroidetes ratio in the intestinal microbiota was regulated, and the contents of short-chain fatty acids metabolites were raised. These findings would provide an insight for the beneficial effects of APL and dietary therapy strategies for UC.
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Keywords
Ulcerative colitis
Krill phospholipids
Bioinformatics analysis
Tight junction protein
Intestinal microbiota
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Fund:This work received supports from the National Natural Science Foundation of China (3150152, 21502239) and the Fundamental Research Funds for the Central Universities, South-Central MinZu University (CZY19032, CZQ21017). |
Corresponding Authors:
Li Zhou,E-mail:zhou2018@scuec.edu.cn;Jikai Liu,E-mail:liujikai@mail.scuec.edu.cn
E-mail: zhou2018@scuec.edu.cn;liujikai@mail.scuec.edu.cn
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Issue Date: 18 May 2023
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