Rucaparib monocamsylate

• CAT Number: I013450
• CAS Number: 1859053-21-6
• Molecular Formula: C29H34FN3O5S
• Molecular Weight: 555.66
• Purity: ≥95%
• Synonyms: [(1S,4R)-7,7-dimethyl-2-oxo-1-bicyclo[2.2.1]heptanyl]methanesulfonic acid;6-fluoro-2-[4-(methylaminomethyl)phenyl]-3,10-diazatricyclo[6.4.1.04,13]trideca-1,4,6,8(13)-tetraen-9-one
• InChI: InChI=1S/C19H18FN3O.C10H16O4S/c1-21-10-11-2-4-12(5-3-11)18-14-6-7-22-19(24)15-8-13(20)9-16(23-18)17(14)15;1-9(2)7-3-4-10(9,8(11)5-7)6-15(12,13)14/h2-5,8-9,21,23H,6-7,10H2,1H3,(H,22,24);7H,3-6H2,1-2H3,(H,12,13,14)/t;7-,10-/m.1/s1
• InChIKey: INBJJAFXHQQSRW-STOWLHSFSA-N
• SMILES: CC1(C2CCC1(C(=O)C2)CS(=O)(=O)O)C.CNCC1=CC=C(C=C1)C2=C3CCNC(=O)C4=C3C(=CC(=C4)F)N2

Rucaparib (AG014699) monocamsylate is an orally active, potent inhibitor of PARP proteins (PARP-1, PARP-2 and PARP-3) with a Ki of 1.4 nM for PARP1. Rucaparib monocamsylate is a modest hexose-6-phosphate dehydrogenase (H6PD) inhibitor. Rucaparib monocamsylate has the potential for castration-resistant prostate cancer (CRPC) research[1][2][3][4].
Rucaparib (AG014699) monocamsylate is a possible N-demethylation metabolite of AG14644[1].
Rucaparib (0.1, 1, 10, 100 μM; 24 hours) monocamsylate is cytotoxic and has the LC50 being 5 μM in Capan-1 (BRCA2 mutant) cells and only 100 nM in MX-1 (BRCA1 mutant) cells[2].
The radio-sensitization by Rucaparib monocamsylate is due to downstream inhibition of activation of NF-κB, and is independent of SSB repair inhibition. Rucaparib monocamsylate can target NF-κB activated by DNA damage and overcome toxicity observed with classical NF-κB inhibitors without compromising other vital inflammatory functions[5].
Rucaparib monocamsylate inhibits PARP-1 activity by 97.1% at a concentration of 1 μM in permeabilised D283Med cells[6].
Rucaparib (AG014699) monocamsylate and AG14584 significantly increase Temozolomide toxicity. Rucaparib (1 mg/kg) monocamsylate significantly increases Temozolomide-induced body weight loss. Rucaparib (0.1 mg/kg) monocamsylate results in a 50% increase in the temozolomide-induced tumor growth delay[1].
Rucaparib (10 mg/kg for i.p. or 50, 150 mg/kg for p.o.; daily for 5 days per week for 6 weeks) monocamsylate significantly inhibits the growth of the tumor, and there is one complete tumor regression and two persistent partial regressions[2].
Rucaparib (150 mg/kg; p.o.; once per week for 6 weeks or three times per week for 6 weeks) monocamsylate has greatest antitumor effect with three complete regressions[2].
Rucaparib monocamsylate enhances the antitumor activity of temozolomide and indicates complete and sustained tumor regression in NB1691 and SHSY5Y xenografts[6].

Reference

[1]. Thomas HD, et al. Preclinical selection of a novel poly(ADP-ribose) polymerase inhibitor for clinical trial. Mol Cancer Ther, 2007, 6(3), 945-956.
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[2]. J Murray, et al. Tumour cell retention of rucaparib, sustained PARP inhibition and efficacy of weekly as well as daily schedules. Br J Cancer. 2014 Apr 15;110(8):1977-84.
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[3]. Matt Shirley, et al. Rucaparib: A Review in Ovarian Cancer. Target Oncol. 2019 Apr;14(2):237-246.
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[4]. Jianneng Li, et al. Hexose-6-phosphate dehydrogenase blockade reverses prostate cancer drug resistance in xenograft models by glucocorticoid inactivation. Sci Transl Med. 2021 May 26;13(595):eabe8226.
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[5]. Hunter JE, et al. NF-κB mediates radio-sensitization by the PARP-1 inhibitor, AG-014699. Oncogene, 2012, 31(2), 251-264.
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[6]. Daniel RA, et al. Inhibition of poly(ADP-ribose) polymerase-1 enhances temozolomide and topotecan activity against childhood neuroblastoma. Clin Cancer Res, 2009, 15(4), 1241-1249.
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