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  • Title: Knockdown of long non-coding RNA Gm10804 suppresses disorders of hepatic glucose and lipid metabolism in diabetes with non-alcoholic fatty liver disease.
    Author: Li T, Huang X, Yue Z, Meng L, Hu Y.
    Journal: Cell Biochem Funct; 2020 Oct; 38(7):839-846. PubMed ID: 32212193.
    Abstract:
    Deregulated glucose and lipid metabolism are the primary underlying manifestations associated with diabetes mellitus (DM) and non-alcoholic fatty liver disease (NAFLD). This study aims to investigate the role of Gm10804, a novel long non-coding RNA (lncRNA), in regulating hepatic glucose and lipid metabolism in DM complicated with NAFLD (DM-NAFLD). Mouse primary hepatocytes exposed to high glucose (HG) were used as a cell model. A mouse DM-NAFLD model was established by high-energy feeding combined with intraperitoneal injection of streptozotocin. The results showed that Gm10804 expression was upregulated in HG-treated hepatocytes and livers from DM-NAFLD mice. Results in hepatocytes in vitro demonstrated that Gm10804 overexpression aggravated, whereas Gm10804 silencing abrogated HG-induced increase in intracellular triglyceride (TG) content, lipid accumulation and expression of hepatic lipogenic proteins (sterol regulatory element-binding proteins 1-c [SREBP-1c] and fatty acid synthase [FAS]) and enzymes for gluconeogenesis (phosphoenolpyruvate carboxykinase [PEPCK] and glucose-6-phosphatase [G6Pase]). Further in vivo assays showed that lentivirus-mediated hepatic knockdown of Gm10804 alleviated hepatic steatosis and lipid accumulation, and decreased expression of hepatic PEPCK, G6Pase, SREBP-1c and FAS in DM-NAFLD mice. In summary, Gm10804 knockdown attenuates hepatic lipid accumulation by ameliorating disorders of hepatic glucose and lipid metabolism in DM-NAFLD. SIGNIFICANCE OF THE STUDY: We first discovered that Gm10804 knockdown attenuated hepatic lipid accumulation by ameliorating disorders of hepatic glucose and lipid metabolism in DM-NAFLD. These results help to understand the pathogenesis and development of DM-NAFLD and provide some clues for further understanding the regulation of lncRNAs in glucose and lipid metabolism.
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