Inducing respiratory complex I impairment elicits an increase in PGC1α in ovarian cancer
Monica De Luise, Manuela Sollazzo, Eleonora Lama, Camelia Alexandra Coadă, Licia Bressi, Maria Iorio, Beatrice Cavina, Luigi D’Angelo, Sara Milioni, Lorena Marchio, Stefano Miglietta, Sara Coluccelli, Greta Tedesco, Anna Ghelli, Silvia Lemma, Anna Myriam Perrone, Ivana Kurelac, Luisa Iommarini, Anna Maria Porcelli & Giuseppe Gasparre
Anticancer strategies aimed at inhibiting Complex I of the mitochondrial respiratory chain are increasingly being attempted in solid tumors, as functional oxidative phosphorylation is vital for cancer cells. Using ovarian cancer as a model, we show that a compensatory response to an energy crisis induced by Complex I genetic ablation or pharmacological inhibition is an increase in the mitochondrial biogenesis master regulator PGC1α, a pleiotropic coactivator of transcription regulating diverse biological processes within the cell. We associate this compensatory response to the increase in PGC1α target gene expression, setting the basis for the comprehension of the molecular pathways triggered by Complex I inhibition that may need attention as drawbacks before these approaches are implemented in ovarian cancer care.
anticancer, PGC 1α, cancer