[EN] NITROIMIDAZOLE COMPOUNDS AND THEIR USE IN CANCER THERAPY<br/>[FR] COMPOSÉS DE NITROIMIDAZOLE ET LEUR UTILISATION EN THÉRAPIE ANTICANCÉREUSE
申请人:AUCKLAND UNISERVICES LTD
公开号:WO2014030142A3
公开(公告)日:2014-04-17
Novel nitroimidazole alkylsulfonamides as hypoxic cell radiosensitisers
作者:Muriel Bonnet、Cho Rong Hong、Yongchuan Gu、Robert F. Anderson、William R. Wilson、Frederik B. Pruijn、Jingli Wang、Kevin O. Hicks、Michael P. Hay
DOI:10.1016/j.bmc.2014.02.039
日期:2014.4
A novel class of nitroimidazole alkylsulfonamides have been prepared and evaluated as hypoxia-selective cytotoxins and radiosensitisers. The sulfonamide side chain markedly influences the physicochemical properties of the analogues: lowering aqueous solubility and raising the electron affinity of the nitroimidazole group. The addition of hydroxyl or basic amine groups increased aqueous solubility, with charged amine groups contributing to increased electron affinity. The analogues covered the range of electron affinity for effective radiosensitisation with one-electron reduction potentials ranging from -503 to -342 mV. Cytotoxicity under normoxia or anoxia against a panel of human tumour cell lines was determined using a proliferation assay. 2-Nitroimidazole sulfonamides displayed significant hypoxia-selective cytotoxicity ( 6 to 64-fold), while 4- and 5-nitroimidazole analogues did not display hypoxia-selective cytotoxicity. All analogues sensitised anoxic HCT-116 human colorectal cells to radiation at non-toxic concentrations. 2-Nitroimidazole analogues provided modest sensitisation due to the relatively low concentrations used while several 5-nitroimidazole analogues provided equivalent sensitisation to misonidazole and etanidazole at similar molar concentrations. (C) 2014 Elsevier Ltd. All rights reserved.
作者:Muriel Bonnet、Cho Rong Hong、Way Wua Wong、Lydia P. Liew、Avik Shome、Jingli Wang、Yongchuan Gu、Ralph J. Stevenson、Wen Qi、Robert F. Anderson、Frederik B. Pruijn、William R. Wilson、Stephen M. F. Jamieson、Kevin O. Hicks、Michael P. Hay
DOI:10.1021/acs.jmedchem.7b01678
日期:2018.2.8
document their cytotoxicity and ability to radiosensitize anoxic tumorcells in vitro. We use a phosphate prodrug approach to increase aqueous solubility and to improve tumor drug delivery. A 2-nitroimidazole and a 5-nitroimidazole analogue demonstrated marked tumor radiosensitization in either ex vivo assays of surviving clonogens or tumor regrowth delay.