First synthesis of an aziridinyl fused pyrrolo[1,2-a]benzimidazole and toxicity evaluation towards normal and breast cancer cell lines
作者:Sarah Bonham、Liz O'Donovan、Michael P. Carty、Fawaz Aldabbagh
DOI:10.1039/c1ob05694h
日期:——
Anionic aromatic ipso-substitution has allowed an aziridine ring to be fused onto pyrrolo[1,2-a]benzimidazole. This diazole analogue of aziridinomitosene, and N-[(aziridinyl)methyl]-1H-benzimidazole are shown to be significantly more cytotoxic towards the human breast cancer cell lines MCF-7 and HCC1937 than towards a human normal fibroblast cell line (GM00637). The aziridinyl fused pyrrolo[1,2-a]benzimidazole is less cytotoxic than the non-ring fused aziridinyl analogue towards all three cell lines. The BRCA1-deficient HCC1937 cells are more sensitive to mitomycin C (MMC) compared to GM00637 and MCF-7 cells. The evidence provided indicates that different pathways may mediate cellular response to benzimidazole-containing aziridine compounds compared to MMC.
阴离子芳香族同位取代使得氮丙啶环与吡咯并[1,2-a]苯并咪唑融合在一起。研究表明,这种氮丙啶咪唑类似物和 N-[(氮丙啶基)甲基]-1H-苯并咪唑对人类乳腺癌细胞系 MCF-7 和 HCC1937 的细胞毒性明显高于人类正常成纤维细胞系(GM00637)。与非环状融合的氮丙啶类似物相比,环状融合的吡咯并[1,2-a]苯并咪唑对所有三种细胞株的细胞毒性都较低。与 GM00637 和 MCF-7 细胞相比,BRCA1 缺陷的 HCC1937 细胞对丝裂霉素 C(MMC)更敏感。所提供的证据表明,与 MMC 相比,不同的途径可能会介导细胞对含苯并咪唑的氮丙啶化合物的反应。