Synthesis, Cytotoxicity, and DNA Interactions of New Cisplatin Analogues Containing Substituted Benzimidazole Ligands


Gumus F., EREN G. , AÇIK L. , ÇELEBİ KESKİN A., Ozturk F., Yilmaz S., ...Daha Fazla

JOURNAL OF MEDICINAL CHEMISTRY, cilt.52, sa.5, ss.1345-1357, 2009 (SCI İndekslerine Giren Dergi) identifier identifier identifier

  • Cilt numarası: 52 Konu: 5
  • Basım Tarihi: 2009
  • Doi Numarası: 10.1021/jm8000983
  • Dergi Adı: JOURNAL OF MEDICINAL CHEMISTRY
  • Sayfa Sayıları: ss.1345-1357

Özet

Six new platinum(II) complexes with 1-H or methyl-2-chloromethyl or acetoxymethyl or 2'-hydroxyethylbenzimidazole carrier ligands were synthesized and evaluated for their reactivity against model nucleophile I-, cellular uptake, and in vitro anti proliferative activities against the human MCF-7 breast and HeLa cervix cancer cell lines. The effect of the compounds on pBR322 plasmid DNA was studied by gel electrophoretic mobility measurements. Flow cytometric analysis was also carried out to study the effect of representative compounds 1 and 2, bearing 2-chloromethyl or -acetoxymethylbenzimidazole carrier ligands, on the cell cycle distribution of MCF-7 and HeLa cells, respectively. In general, it was found that Pt(II) complexes were less cytotoxic than cisplatin and were comparable to carboplatin. The results of the plasmid DNA interaction and the restriction studies suggest that changing the chemical structure of the benzimidazole ligands may modulate DNA binding mode and the sequence selectivity. Compounds I and 2 had no significant effect on the cell cycle profile of the cells used. However, Compound 2 induced a significant increase in the SubG1 cell population at a concentration of 20 mu M.