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Integrated Regulation of Hepatic Lipid and Glucose Metabolism by Adipose Triacylglycerol Lipase and FoxO Proteins.

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Title: Integrated Regulation of Hepatic Lipid and Glucose Metabolism by Adipose Triacylglycerol Lipase and FoxO Proteins.
Author(s): Zhang, W; Bu, SY; Mashek, MT; O-Sullivan, I; Sibai, Z; Khan, SA; Ilkayeva, O; Newgard, CB; Mashek, DG; Unterman, TG
Abstract: Metabolism is a highly integrated process that is coordinately regulated between tissues and within individual cells. FoxO proteins are major targets of insulin action and contribute to the regulation of gluconeogenesis, glycolysis, and lipogenesis in the liver. However, the mechanisms by which FoxO proteins exert these diverse effects in an integrated fashion remain poorly understood. We report that FoxO proteins also exert important effects on intrahepatic lipolysis and fatty acid oxidation via the regulation of adipose triacylglycerol lipase (ATGL), which mediates the first step in lipolysis, and its inhibitor, the G0/S1 switch 2 gene (G0S2). We also find that ATGL-dependent lipolysis plays a critical role in mediating diverse effects of FoxO proteins in the liver, including effects on gluconeogenic, glycolytic, and lipogenic gene expression and metabolism. These results indicate that intrahepatic lipolysis plays a critical role in mediating and integrating the regulation of glucose and lipid metabolism downstream of FoxO proteins.
Issue Date: 2016-04-12
Publisher: Elsevier Inc.
Citation Info: Zhang, W., Bu, S. Y., Mashek, M. T., O-Sullivan, I., Sibai, Z., Khan, S. A., Ilkayeva, O., Newgard, C. B., Mashek, D. G. and Unterman, T. G. Integrated Regulation of Hepatic Lipid and Glucose Metabolism by Adipose Triacylglycerol Lipase and FoxO Proteins. Cell Reports. 2016. 15(2): 349-359. doi: 10.1016/j.celrep.2016.03.021.
Type: Article
Description: This is a copy of an article published in Cell Reports © 2016 Elsevier Publications.
URI: http://hdl.handle.net/10027/20661
ISSN: 2211-1247
Sponsor: This research was supported in part by grants from the Department of Veterans Affairs Merit Review Program (to T.G.U.) and NIH grants DK58398 (to C.B.N.), DK085008 (to D.G.M.), DK059630 (to University of Cincinnati Mouse Metabolic Phenotyping Center), UL1TR000439 (to CASE MMPC), and DK050456 (to Minnesota Obesity Center).
Date Available in INDIGO: 2016-06-01
 

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