Correlation of enhanced 6-mercaptopurine cytotoxicity with increased phosphoribosylpyrophosphate levels in Chinese hamster ovary cells treated with 3-aminobenzamide.


3-Aminobenzamide (3AB) has been used widely to inhibit the nuclear enzyme poly(ADP-ribose) polymerase (EC and study the involvement of poly(ADP-ribose) synthesis in DNA repair and other cellular functions. 3AB (3 mM) potentiates the cytotoxicity of 6-mercaptopurine (MP) and azathioprine in CHO-K1 cells with dose enhancement factors at 10% survival… (More)


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