The anti-angiogenic compound dimethyl fumarate inhibits the serine synthesis pathway and increases glycolysis in endothelial cells
Ocana, M. C.; Yang, C.; Bernal, M.; Martinez-Poveda, B.; Vu, H. S.; Cardenas, C.; DeBerardinis, R. J.; Quesada, A. R.; Medina, M. A.
Show abstract
A pathological and persistent angiogenesis is observed in several diseases like retinopathies, diabetes, psoriasis and cancer. Dimethyl fumarate, an ester from the Krebs cycle intermediate fumarate, is approved as a drug for the treatment of psoriasis and multiple sclerosis, and its anti-angiogenic activity has been reported in vitro and in vivo. However, it is not known whether dimethyl fumarate is able to modulate endothelial cell metabolism, considered an essential feature for the angiogenic switch. By means of different experimental approximations, including proteomics, isotope tracing and metabolomics experimental approaches, in this work we studied the possible role of dimethyl fumarate in endothelial cell energetic metabolism. We demonstrate for the first time that dimethyl fumarate promotes glycolysis and diminishes cell respiration, which could be a consequence of a down-regulation of serine and glycine synthesis through inhibition of PHGDH activity in endothelial cells. This new target can open a new field of study regarding the mechanism of action of dimethyl fumarate.
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