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Zhang, Juan; Terán, Graciela; Popa, Mihaela; Madapura, Harsha; Ladds, Marcus James Graeme Watson; Lianoudaki, Danai; Grünler, Jacob; Arsenian-Henriksson, Marie; McCormack, Emmet; Rottenberg, Martin Enrique; Catrina, Sergiu-Bogdan; Laín, Sonia; Darekar, Suhas
iScience, 05/2021, Letnik: 24, Številka: 5Journal Article
Dihydroorotate dehydrogenase (DHODH) is essential for the de novo synthesis of pyrimidine ribonucleotides, and as such, its inhibitors have been long used to treat autoimmune diseases and are in clinical trials for cancer and viral infections. Interestingly, DHODH is located in the inner mitochondrial membrane and contributes to provide ubiquinol to the respiratory chain. Thus, DHODH provides the link between nucleotide metabolism and mitochondrial function. Here we show that pharmacological inhibition of DHODH reduces mitochondrial respiration, promotes glycolysis, and enhances GLUT4 translocation to the cytoplasmic membrane and that by activating tumor suppressor p53, increases the expression of GDF15, a cytokine that reduces appetite and prolongs lifespan. In addition, similar to the antidiabetic drug metformin, we observed that in db/db mice, DHODH inhibitors elevate levels of circulating GDF15 and reduce food intake. Further analysis using this model for obesity-induced diabetes revealed that DHODH inhibitors delay pancreatic β cell death and improve metabolic balance. Display omitted •DHODH inhibitors impair respiration and increase glycolysis.•They promote the expression and secretion of GDF15 in a p53-dependent manner.•In hyperphagic db/db mice, DHODH inhibitors increase circulating GDF15.•They protect pancreatic β cells and improve glucose balance in these mice. Biological sciences ; Physiology ; Cellular physiology ; Endocrinology ; Diabetology
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in: SICRIS
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