Multi-omics reveals deoxycholic acid modulates bile acid metabolism via the gut microbiota to antagonize carbon tetrachloride-induced chronic liver injury

• Published in: Gut microbes Vol. 16; no. 1; p. 2323236
• Main Authors: Zhang, Li, Zheng, Zhiyi, Huang, Huanhuan, Fu, Ya, Chen, Tianbin, Liu, Can, Yi, Qiang, Lin, Caorui, Zeng, Yongjun, Ou, Qishui, Zeng, Yongbin
• Format: Journal Article
• Language: English
• Published: United States Taylor & Francis 2024; Taylor & Francis Group
• Subjects: Bile Acids and Salts; Carbon Tetrachloride - toxicity; Chronic liver injury; Deoxycholic Acid; Gastrointestinal Microbiome; gut microbiota; inflammation; Interleukin-17; Liver; metabolism; Multiomics; Research Paper; transcriptome; deoxycholic acid; metabolism; inflammation; transcriptome; Chronic liver injury; gut microbiota
• ISSN: 1949-0976; 1949-0984; 1949-0984
• DOI: 10.1080/19490976.2024.2323236

Deoxycholic acid (DCA) serves essential functions in both physiological and pathological liver processes; nevertheless, the relationship among DCA, gut microbiota, and metabolism in chronic liver injury remain insufficiently understood. The primary objective of this study is to elucidate the potential of DCA in ameliorating chronic liver injury and evaluate its regulatory effect on gut microbiota and metabolism via a comprehensive multi-omics approach. Our study found that DCA supplementation caused significant changes in the composition of gut microbiota, which were essential for its antagonistic effect against CCl
-induced chronic liver injury. When gut microbiota was depleted with antibiotics, the observed protective efficacy of DCA against chronic liver injury became noticeably attenuated. Mechanistically, we discovered that DCA regulates the metabolism of bile acids (BAs), including 3-epi DCA, Apo-CA, and its isomers 12-KLCA and 7-KLCA, IHDCA, and DCA, by promoting the growth of
in gut microbiota. This might lead to the inhibition of the IL-17 and TNF inflammatory signaling pathway, thereby effectively countering CCl
-induced chronic liver injury. This study illustrates that the enrichment of
in the gut microbiota, mediated by DCA, enhances the production of secondary bile acids, thereby mitigating chronic liver injury induced by CCl
. The underlying mechanism may involve the inhibition of hepatic IL-17 and TNF signaling pathways. These findings propose a promising approach to alleviate chronic liver injury by modulating both the gut microbiota and bile acids metabolism.