Synonym: BSI-201, NSC-746045, IND-71677
Iniparib (BSI-201) is a potent small-molecule Poly(ADP-ribose) polymerase (PARP1) inhibitor for cancer treatment. Poly(ADP-ribose) polymerase (PARP) is a critical DNA repair enzyme involved in DNA single-strand break repair via the base excision repair pathway. PARP1 is activated by DNA damage. BSI-201 was the first putative PARP inhibitor to commence phase III clinical trials. Iniparib (BSI-201) produces rapid apoptosis in various cancer cell lines with IC50 values ranging from 40-128 μM and is not toxic in Syrian hamsters at doses as high as 200 mg/kg. BSI-201 was well tolerated and there were no changes in blood counts at the end of treatment. Antitumor activity of Iniparib (BSI-201) was confirmed by Caspace-3 and TUNEL staining of OVCAR-3 tumors. The combination of Iniparib and topotecan produced significant antitumor activity (P<0.001) and increased the percentage of complete tumor regression compared with topotecan alone. In addition, PARP-1 inhibitor BSI-201 may exhibit direct antineoplastic activity against cancers defective in DNA repair.
|Body Surface Area (m2)||0.007||0.025||0.15||0.05||0.02||0.5|
|Animal A (mg/kg) = Animal B (mg/kg) multiplied by||Animal B Km|
|Animal A Km|
For example, to modify the dose of resveratrol used for a mouse (22.4 mg/kg) to a dose based on the BSA for a rat, multiply 22.4 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for resveratrol of 11.2 mg/kg.
|Solubility||DMSO 50 mg/mL|
Differential effects of poly(ADP-ribose) polymerase inhibition on DNA break repair in human cells are revealed with Epstein-Barr virus.
Ma W, et al. Proc Natl Acad Sci U S A. 2012 Apr 24;109(17):6590-5. PMID: 22493268.
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