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- W4223553304 abstract "Cells have metabolic flexibility that allows them to adapt to changes in substrate availability. Two highly relevant metabolites are glucose and fatty acids (FA), and hence, glycolysis and fatty acid oxidation (FAO) are key metabolic pathways leading to energy production. Both pathways affect each other, and in the absence of one substrate, metabolic flexibility allows cells to maintain sufficient energy production. Here we show that glucose starvation or sustained pyruvate dehy-drogenase (PDH) activation by dichloroacetate (DCA) induce a large genetic remodeling to pro-pel FAO. The extracellular signal-regulated kinase 5 (ERK5) is a key effector of this multistep metabolic remodeling. First, there is an increase in the lipid transport by expression of low-density lipoprotein receptor-related proteins (LRP), e.g. CD36, LRP1 and others. Second, an increase of the expression of members of the acyl-CoA synthetase long-chain (ACSL) family acti-vates FA. Finally, the expression of the enzymes that catalyze the initial step in each cycle of FAO, i.e. the acyl-CoA dehydrogenases (ACADs), is induced. All of these pathways lead to enhanced cellular FAO. In summary, we show here that different families of enzymes, which are essential to perform FAO, are regulated by the signaling pathway, i.e. MEK5/ERK5, which transduces changes from the environment to genetic adaptations." @default.
- W4223553304 created "2022-04-15" @default.
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- W4223553304 date "2022-04-08" @default.
- W4223553304 modified "2023-09-28" @default.
- W4223553304 title "Glucose Starvation or Pyruvate Dehydrogenase Activation Induce A Broad, ERK5-Mediated, Metabolic Remodeling Leading to Fatty Acid Oxidation" @default.
- W4223553304 doi "https://doi.org/10.20944/preprints202204.0079.v1" @default.
- W4223553304 hasPublicationYear "2022" @default.
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