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- W2958096912 abstract "Ubiquitin-conjugating enzyme E2O (UBE2O) is expressed preferentially in metabolic tissues, but its role in regulating energy homeostasis has yet to be defined. Here we find that UBE2O is markedly upregulated in obese subjects with type 2 diabetes and show that whole-body disruption of Ube2o in mouse models in vivo results in improved metabolic profiles and resistance to high-fat diet–induced (HFD-induced) obesity and metabolic syndrome. With no difference in nutrient intake, Ube2o–/– mice were leaner and expended more energy than WT mice. In addition, hyperinsulinemic-euglycemic clamp studies revealed that Ube2o–/– mice were profoundly insulin sensitive. Through phenotype analysis of HFD mice with muscle-, fat-, or liver–specific knockout of Ube2o, we further identified UBE2O as an essential regulator of glucose and lipid metabolism programs in skeletal muscle, but not in adipose or liver tissue. Mechanistically, UBE2O acted as a ubiquitin ligase and targeted AMPKα2 for ubiquitin-dependent degradation in skeletal muscle; further, muscle-specific heterozygous knockout of Prkaa2 ablated UBE2O-controlled metabolic processes. These results identify the UBE2O/AMPKα2 axis as both a potent regulator of metabolic homeostasis in skeletal muscle and a therapeutic target in the treatment of diabetes and metabolic disorders." @default.
- W2958096912 created "2019-07-23" @default.
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- W2958096912 date "2019-07-11" @default.
- W2958096912 modified "2023-09-24" @default.
- W2958096912 title "A muscle-specific UBE2O/AMPKα2 axis promotes insulin resistance and metabolic syndrome in obesity" @default.
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- W2958096912 doi "https://doi.org/10.1172/jci.insight.128269" @default.
- W2958096912 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6629239" @default.
- W2958096912 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/31292296" @default.
- W2958096912 hasPublicationYear "2019" @default.
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