Title : Poly(ADP-ribose) polymerase-1 inhibition by arsenite promotes the survival of cells with unrepaired DNA lesions induced by UV exposure.

Pub. Date : 2012 May

PMID : 22387748






4 Functional Relationships(s)
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1 Poly(ADP-ribose) polymerase-1 inhibition by arsenite promotes the survival of cells with unrepaired DNA lesions induced by UV exposure. arsenite poly(ADP-ribose) polymerase 1 Homo sapiens
2 We have previously demonstrated that low concentrations of arsenite inhibit poly(ADP-ribose) polymerase (PARP)-1, thus interfering with DNA repair process triggered by UV radiation. arsenite poly(ADP-ribose) polymerase 1 Homo sapiens
3 Notably, knockdown of PARP-1 with small interfering RNA completely abolished the antagonism of arsenite. arsenite poly(ADP-ribose) polymerase 1 Homo sapiens
4 Together, these results suggest that low concentration of arsenite reduces UV-induced apoptosis via inhibiting PARP-1, thus promoting the survival of cells with unrepaired DNA lesions, which may be an important mechanism underlying arsenic cocarcinogenic action. arsenite poly(ADP-ribose) polymerase 1 Homo sapiens