Epigallocatechin‐3‐gallate activates the AMP‐activated protein kinase signaling pathway to reduce lipid accumulation in canine hepatocytes
- 22 June 2020
- journal article
- research article
- Published by Wiley in Journal of Cellular Physiology
- Vol. 236 (1), 405-416
- https://doi.org/10.1002/jcp.29869
Abstract
Epigallocatechin‐3‐gallate (EGCG) plays a crucial role in hepatic lipid metabolism. However, the underlying regulatory mechanism of hepatic lipid metabolism by EGCG in canine is unclear. Primary canine hepatocytes were treated with EGCG (0.01, 0.1, or 1 μM) and BML‐275 (an AMP‐activated protein kinase [AMPK] inhibitor) to study the effects of EGCG on the gene and protein expressions associated with AMPK signaling pathway. Data showed that treatment with EGCG had greater activation of AMPK, as well as greater expression levels and transcriptional activity of peroxisome proliferator activated receptor‐α (PPARα) along with upregulated messenger RNA (mRNA) abundance and protein abundance of PPARα‐target genes. EGCG decreased the expression levels and transcriptional activity of sterol regulatory element‐binding protein 1c (SREBP‐1c) along with downregulated mRNA abundance and protein abundance of SREBP‐1c target genes. Of particular interest, exogenous BML‐275 could reduce or eliminate the effects of EGCG on lipid metabolism in canine hepatocytes. Furthermore, the content of triglyceride was significantly decreased in the EGCG‐treated groups. These results suggest that EGCG might be a potential agent in preventing high‐fat diet‐induced lipid accumulation in small animals.Funding Information
- National Key Research and Development Program of China (2016YFD0501009)
- the Postdoctoral Science Fund of Anhui Province (2016B117)
- the University Collaborative Innovation Program of Anhui Province (GXXT-2019-013)
- Anhui Agricultural University College Students Innovation and Entrepreneurship Training Program Innovative Training Project Foundation (201910364034)
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