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Reputable Mentor II
Reputable Mentor II
Chow JD, Lawrence RT, Healy ME, Dominy JE, Liao JA, Breen DS, Byrne FL, Kenwood BM, Lackner C, Okutsu S, Mas VR, Caldwell SH, Tomsig JL, Cooney GJ, Puigserver PB, Turner N, James DE, Villén J, Hoehn KL.
Mol Metab. 2014 Mar 12;3(4):419-31. doi: 10.1016/j.molmet.2014.02.004.
Lipid deposition in the liver is associated with metabolic disorders including fatty liver disease, type II diabetes, and hepatocellular cancer. The enzymes acetyl-CoA carboxylase 1 (ACC1) and ACC2 are powerful regulators of hepatic fat storage; therefore, their inhibition is expected to prevent the development of fatty liver. In this study we generated liver-specific ACC1 and ACC2 double knockout (LDKO) mice to determine how the loss of ACC activity affects liver fat metabolism and whole-body physiology. Characterization of LDKO mice revealed unexpected phenotypes of increased hepatic triglyceride and decreased fat oxidation. We also observed that chronic ACC inhibition led to hyper-acetylation of proteins in the extra-mitochondrial space. In sum, these data reveal the existence of a compensatory pathway that protects hepatic fat stores when ACC enzymes are inhibited. Furthermore, we identified an important role for ACC enzymes in the regulation of protein acetylation in the extra-mitochondrial space.

http://www.sciencedirect.com/science/article/pii/S2212877814000453
University of Virginia, University of Washington, Harvard Medical School, Medical University Graz, Garvan Institute of Medical Research, University of New South Wales
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