Basse, Astrid L.
Isidor, Marie S.
Skjoldborg, Nina B.
Andersen, Elise S.
Pedersen, Steen B.
Hansen, Jacob B.
- Journal Article
Rights / licenseCreative Commons Attribution 4.0 International
Brown adipose tissue takes up large amounts of glucose during cold exposure in mice and humans. Here we report an induction of glucose transporter 1 expression and increased expression of several glycolytic enzymes in brown adipose tissue from cold-exposed mice. Accordingly, these genes were also induced after β-adrenergic activation of cultured brown adipocytes, concomitant with accumulation of hypoxia inducible factor-1α (HIF-1α) protein levels. HIF-1α accumulation was dependent on uncoupling protein 1 and generation of mitochondrial reactive oxygen species. Expression of key glycolytic enzymes was reduced after knockdown of HIF-1α in mature brown adipocytes. Glucose consumption, lactate export and glycolytic capacity were reduced in brown adipocytes depleted of Hif-1α. Finally, we observed a decreased β-adrenergically induced oxygen consumption in Hif-1α knockdown adipocytes cultured in medium with glucose as the only exogenously added fuel. These data suggest that HIF-1α-dependent regulation of glycolysis is necessary for maximum glucose metabolism in brown adipocytes Show more
Journal / seriesScientific Reports
PublisherNature Publishing Group
Organisational unit03819 - Wolfrum, Christian
278373 - 8d827cc1a0eca86e40b03b0d3a25384f (EC)
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