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Lu J, Zhang Y, Wang YZ, Li YY, Wang R, Zhong YJ, Chen L, Song MW, Shi L, Li L, Li YW. Caffeic acid dimethyl ether alleviates alcohol-induced hepatic steatosis via microRNA-378b-mediated CaMKK2-AMPK pathway. Bioengineered 2022; 13:11122-11136. [PMID: 35481488 PMCID: PMC9208468 DOI: 10.1080/21655979.2022.2060586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Alcoholic liver disease (ALD), with its increasing morbidity and mortality, has seriously and extensively affected the health of people worldwide. Caffeic Acid Dimethyl Ether (CADE) significantly inhibits alcohol-induced hepatic steatosis in vivo through AMP-activated protein kinase (AMPK) pathway, but its in-depth mechanism remains unclear. This work aimed to clarify further mechanism of CADE in improving hepatic lipid accumulation in ALD through the microRNA-378b (miR-378b)-mediated Ca2+/calmodulin-dependent protein kinase kinase 2 (CaMKK2)-AMPK signaling pathway. Here, we reported that the hepatic or serum triglyceride (TG), total cholesterol (TC), alanine aminotransferase (ALT), and aspartate transaminase (AST) levels were sharply escalated by ethanol while prominently decreased by CADE. Ethanol sharply up-regulated miR-378b expression while CADE effectively prevented the elevation of miR-378b in vivo. And treatment of CADE surely increased mRNA and protein expression of CaMKK2 as a kinase of AMPK and reduced lipid accumulation in the livers of alcohol-fed C57BL/6 mice. MiR-378b escalation exacerbated hepatic steatosis and inhibited CaMKK2-AMPK signaling, while miR-378b deficiency alleviated lipid accumulation and activated the CaMKK2 cascade. Furthermore, CADE alleviated the lipid deposition and reversed the disorder of CaMKK2-AMPK signaling pathway induced by miR-378b over-expression. However, knockdown of miR-378b eliminated the beneficial effect of CADE on lipid metabolism. In brief, our results showed that CADE ultimately improved hepatic lipid deposition by regulating the CaMKK2-AMPK signaling pathway through miR-378b.
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Affiliation(s)
- Jun Lu
- College of Pharmacy, Guilin Medical University, Guilin, China
| | - Yan Zhang
- College of Pharmacy, Guilin Medical University, Guilin, China
| | - Ying-Zhao Wang
- College of Pharmacy, Guilin Medical University, Guilin, China
| | - Yuan-Yuan Li
- College of Pharmacy, Guilin Medical University, Guilin, China
| | - Rui Wang
- College of Pharmacy, Guilin Medical University, Guilin, China
| | - Yu-Juan Zhong
- College of Pharmacy, Guilin Medical University, Guilin, China
| | - Li Chen
- College of Pharmacy, Guilin Medical University, Guilin, China
| | - Meng-Wei Song
- College of Pharmacy, Guilin Medical University, Guilin, China
| | - Lin Shi
- College of Pharmacy, Guilin Medical University, Guilin, China
| | - Li Li
- College of Pharmacy, Guilin Medical University, Guilin, China
| | - Yong-Wen Li
- College of Pharmacy, Guilin Medical University, Guilin, China.,Center for Diabetic Systems Medicine, Guangxi Key Laboratory of Excellence, Guilin, China
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