BNC-105 - CAS 945771-74-4
Catalog number: 945771-74-4
Category: Inhibitor
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BNC105 is a novel compound being developed by Bionomics as a Vascular Disrupting Agent (VDA) for treatment of cancer. VDAs are drugs that disrupt the blood vessels that nourish tumours. BNC105 acts as a tubulin polymerization inhibitor and displays 80-fold higher potency against endothelial cells than that of CA4P. CA4P is a VDA currently under evaluation in phase III clinical trials. BNC105 is more potent and offers a wider therapeutic window. CA4P produces 90% vascular disruption at its no observed adverse event level (NOAEL), whereas BNC105 causes 95% vascular disruption at 1/8th of its NOAEL. Tissue distribution analysis of BNC105 in tumor-bearing mice showed that while the drug is cleared from all tissues 24 hours after administration, it is still present at high concentrations within the solid tumor mass. Furthermore, BNC105 treatment causes tumor regressions with complete tumor clearance in 20% of treated animals.
white solid powder
BCN-105; BCN105; BCN 105.
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Current Developer:
Bionomics, Inc.
1.Clinical, pharmacodynamic, and pharmacokinetic evaluation of BNC105P: a phase I trial of a novel vascular disrupting agent and inhibitor of cancer cell proliferation.
Rischin D1, Bibby DC, Chong G, Kremmidiotis G, Leske AF, Matthews CA, Wong SS, Rosen MA, Desai J. Clin Cancer Res. 2011 Aug 1;17(15):5152-60. doi: 10.1158/1078-0432.CCR-11-0937. Epub 2011 Jun 20.
PURPOSE: To determine the recommended phase II dose and evaluate the safety and toxicity profile and pharmacokinetic (PK) and pharmacodynamic (PD) effects of BNC105P, an inhibitor of tubulin polymerization that has vascular disrupting and antiproliferative effects.
2.Discovery of 7-hydroxy-6-methoxy-2-methyl-3-(3,4,5-trimethoxybenzoyl)benzo[b]furan (BNC105), a tubulin polymerization inhibitor with potent antiproliferative and tumor vascular disrupting properties.
Flynn BL1, Gill GS, Grobelny DW, Chaplin JH, Paul D, Leske AF, Lavranos TC, Chalmers DK, Charman SA, Kostewicz E, Shackleford DM, Morizzi J, Hamel E, Jung MK, Kremmidiotis G. J Med Chem. 2011 Sep 8;54(17):6014-27. doi: 10.1021/jm200454y. Epub 2011 Aug 5.
A structure-activity relationship (SAR) guided design of novel tubulin polymerization inhibitors has resulted in a series of benzo[b]furans with exceptional potency toward cancer cells and activated endothelial cells. The potency of early lead compounds has been substantially improved through the synergistic effect of introducing a conformational bias and additional hydrogen bond donor to the pharmacophore. Screening of a focused library of potent tubulin polymerization inhibitors for selectivity against cancer cells and activated endothelial cells over quiescent endothelial cells has afforded 7-hydroxy-6-methoxy-2-methyl-3-(3,4,5-trimethoxybenzoyl)benzo[b]furan (BNC105, 8) as a potent and selective antiproliferative. Because of poor solubility, 8 is administered as its disodium phosphate ester prodrug 9 (BNC105P), which is rapidly cleaved in vivo to return the active 8. 9 exhibits both superior vascular disrupting and tumor growth inhibitory properties compared with the benchmark agent combretastatin A-4 disodium phosphate 5 (CA4P).
3.The vascular disrupting agent BNC105 potentiates the efficacy of VEGF and mTOR inhibitors in renal and breast cancer.
Inglis DJ1, Lavranos TC, Beaumont DM, Leske AF, Brown CK, Hall AJ, Kremmidiotis G. Cancer Biol Ther. 2014;15(11):1552-60. doi: 10.4161/15384047.2014.956605.
BNC105 is a tubulin targeting compound that selectively disrupts vasculature within solid tumors. The severe tumor hypoxia and necrosis that ensues translates to short term tumor growth inhibition. We sought to identify the molecular and cellular events activated following BNC105 treatment that drives tumor recovery. We investigated tumor adaptation to BNC105-induced hypoxia in animal models of breast and renal cancer. HIF-1α and GLUT-1 were found to be strongly upregulated by BNC105 as was the VEGF signaling axis. Phosphorylation of mTOR, 4E-BP-1 and elF2α were upregulated, consistent with increased protein synthesis and increased expression of VEGF-A. We sought to investigate the potential therapeutic utility of combining BNC105 with agents targeting VEGF and mTOR signaling. Bevacizumab and pazopanib target the VEGF axis and have been approved for first line use in renal cancer. Everolimus targets mTOR and is currently approved in second line therapy of renal and particular breast cancers.
4.BNC105: a novel tubulin polymerization inhibitor that selectively disrupts tumor vasculature and displays single-agent antitumor efficacy.
Kremmidiotis G1, Leske AF, Lavranos TC, Beaumont D, Gasic J, Hall A, O'Callaghan M, Matthews CA, Flynn B. Mol Cancer Ther. 2010 Jun;9(6):1562-73. doi: 10.1158/1535-7163.MCT-09-0815. Epub 2010 Jun 1.
Vascular disruption agents (VDA) cause occlusion of tumor vasculature, resulting in hypoxia-driven tumor cell necrosis. Tumor vascular disruption is a therapeutic strategy of great potential; however, VDAs currently under development display a narrow therapeutic margin, with cardiovascular toxicity posing a dose-limiting obstacle. Discovery of new VDAs, which display a wider therapeutic margin, may allow attainment of improved clinical outcomes. To identify such compounds, we used an in vitro selectivity screening approach that exploits the fact that tumor endothelial cells are in a constant state of activation and angiogenesis and do not undergo senescence. Our effort yielded the compound BNC105. This compound acts as a tubulin polymerization inhibitor and displays 80-fold higher potency against endothelial cells that are actively proliferating or are engaged in the formation of in vitro capillaries compared with nonproliferating endothelial cells or endothelium found in stable capillaries.
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CAS 945771-74-4 BNC-105

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