Modified tetrahalogenated benzimidazoles with CK2 inhibitory activity are active against human prostate cancer cells LNCaP in vitro
摘要:
A series of novel CK2 inhibitors, tetrahalogenated benzimidazoles carrying an aminoalkylamino group at position 2, has been prepared by nucleophilic substitution of the respective 2,4,5,6,7-pentabromobenzimidazoles and 2-bromo-4,5,6,7-tetraiodobenzimidazoles. The new derivatives as well as some previously obtained tetrahalogenobenzimidazoles, including 4,5,6,7-tetrabromobenzimidazole (TBI) and 4,5,6,7-tetraiodobenzimidazole (TIBI), were evaluated for activity against the hormone-sensitive human prostate cancer cell line LNCaP. The activity of 2-aminoalkylamino derivatives was notably higher (LD50 4.75-9.37 mu M) than that of TBI and TIBI (LD50 approximate to 20 mu M). The determination of the LD50 value identified the 2-aminoethylamino-4,5,6,7-tetraiodobenzimidazole with an additional methyl group at position 1 (6) as the most efficient compound (LD50: 4.75 +/- 1.02 mu M). Interestingly, there was no clear correlation between cell viability and apoptosis induction indicating additional cell death mechanisms. (C) 2012 Elsevier Ltd. All rights reserved.
Modified tetrahalogenated benzimidazoles with CK2 inhibitory activity are active against human prostate cancer cells LNCaP in vitro
作者:Carolin C. Schneider、Sabine Kartarius、Mathias Montenarh、Andrzej Orzeszko、Zygmunt Kazimierczuk
DOI:10.1016/j.bmc.2012.05.038
日期:2012.7
A series of novel CK2 inhibitors, tetrahalogenated benzimidazoles carrying an aminoalkylamino group at position 2, has been prepared by nucleophilic substitution of the respective 2,4,5,6,7-pentabromobenzimidazoles and 2-bromo-4,5,6,7-tetraiodobenzimidazoles. The new derivatives as well as some previously obtained tetrahalogenobenzimidazoles, including 4,5,6,7-tetrabromobenzimidazole (TBI) and 4,5,6,7-tetraiodobenzimidazole (TIBI), were evaluated for activity against the hormone-sensitive human prostate cancer cell line LNCaP. The activity of 2-aminoalkylamino derivatives was notably higher (LD50 4.75-9.37 mu M) than that of TBI and TIBI (LD50 approximate to 20 mu M). The determination of the LD50 value identified the 2-aminoethylamino-4,5,6,7-tetraiodobenzimidazole with an additional methyl group at position 1 (6) as the most efficient compound (LD50: 4.75 +/- 1.02 mu M). Interestingly, there was no clear correlation between cell viability and apoptosis induction indicating additional cell death mechanisms. (C) 2012 Elsevier Ltd. All rights reserved.