Title : Low concentration of arsenite exacerbates UVR-induced DNA strand breaks by inhibiting PARP-1 activity.

Pub. Date : 2008 Oct 1

PMID : 18619636






7 Functional Relationships(s)
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Protein Name
Organism
1 Low concentration of arsenite exacerbates UVR-induced DNA strand breaks by inhibiting PARP-1 activity. arsenite poly(ADP-ribose) polymerase 1 Homo sapiens
2 Further studies showed that 2 microM arsenite effectively inhibited PARP-1 activity. arsenite poly(ADP-ribose) polymerase 1 Homo sapiens
3 Zinc supplementation of arsenite-treated cells restored PARP-1 activity and significantly diminished the exacerbating effect of arsenite on UVR-induced DNA strand breaks. arsenite poly(ADP-ribose) polymerase 1 Homo sapiens
4 Combination treatments of arsenite with PARP-1 inhibitor 3-aminobenzamide or PARP-1 siRNA demonstrate that PARP-1 is the target of arsenite. arsenite poly(ADP-ribose) polymerase 1 Homo sapiens
5 Combination treatments of arsenite with PARP-1 inhibitor 3-aminobenzamide or PARP-1 siRNA demonstrate that PARP-1 is the target of arsenite. arsenite poly(ADP-ribose) polymerase 1 Homo sapiens
6 Combination treatments of arsenite with PARP-1 inhibitor 3-aminobenzamide or PARP-1 siRNA demonstrate that PARP-1 is the target of arsenite. arsenite poly(ADP-ribose) polymerase 1 Homo sapiens
7 Together, these findings show that arsenite at low concentration exacerbates UVR-induced DNA strand breaks by inhibiting PARP-1 activity, which may represent an important mechanism underlying the co-carcinogenicity of arsenic. arsenite poly(ADP-ribose) polymerase 1 Homo sapiens