γ-Mangostin Ameliorates Free Fatty Acid-Induced Lipid Accumulation via the SIRT1/LKB1/AMPK Pathway in HepG2 and L02 Cells
- PMID: 31674780
- DOI: 10.1021/acs.jafc.9b05632
γ-Mangostin Ameliorates Free Fatty Acid-Induced Lipid Accumulation via the SIRT1/LKB1/AMPK Pathway in HepG2 and L02 Cells
Abstract
Lipid accumulation is a typical characteristic of nonalcoholic fatty liver disease (NAFLD). The inhibition of lipid accumulation is regarded as a potential treatment for NAFLD. In this study, we investigated the effects of γ-mangostin or α-mangostin on lipid accumulation in a cell model. Analysis of the inhibitory effects of γ-mangostin on lipid accumulation revealed that it downregulated NAFLD-related biochemical parameters and stimulated the SIRT1/LKB1/AMPK pathway. Consequently, it suppressed lipid synthesis and enhanced fatty acid oxidation. Moreover, we demonstrated that the blockage of AMP-activated protein kinase (AMPK) by the pharmacological inhibitor Compound C abrogated the promoting effect of AMPK. Similar results were also observed for α-mangostin. The effects of α-mangostin on lipid accumulation were inferior to those of γ-mangostin. The differences in CPT1A activity might be originated from their different chemical structures. Our results suggested that γ-mangostin and α-mangostin can be exploited as potential candidates for NAFLD treatment.
Keywords: Compound C; nonalcoholic fatty liver disease (NAFLD); the AMPK pathway; α-mangostin; γ-mangostin.
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