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- A decrease in NAMPT activity impairs basal PARP-1 activity in cytidine deaminase deficient-cells, independently of NAD+
A decrease in NAMPT activity impairs basal PARP-1 activity in cytidine deaminase deficient-cells, independently of NAD+
Authors
Sandra Cunha Silveira, Géraldine Buhagiar-Labarchède, Rosine Onclercq-Delic, Simon Gemble, Elias Bou Samra, Hamza Mameri, Patricia Duchambon, Christelle Machon, Jérôme Guitton, Mounira Amor-Guéret
Abstract
Abstract
Cytidine deaminase (CDA) deficiency causes pyrimidine pool disequilibrium. We previously reported that the excess cellular dC and dCTP resulting from CDA deficiency jeopardizes genome stability, decreasing basal poly(ADP-ribose) polymerase 1 (PARP-1) activity and increasing ultrafine anaphase bridge (UFB) formation. Here, we investigated the mechanism underlying the decrease in PARP-1 activity in CDA-deficient cells. PARP-1 activity is dependent on intracellular NAD