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Elsevier, Journal of Inorganic Biochemistry, 8(104), p. 815-819, 2010

DOI: 10.1016/j.jinorgbio.2010.03.011

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Substituted 9-aminoacridine-4-carboxamides tethered to platinum(II)diamine complexes: Chemistry, cytotoxicity and DNA sequence selectivity

This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

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Abstract

Three platinum complexes in which substituted (7-OMe, 9-NH2; 7-F, 9-NH2; and 7-H, 9-NH(CH2)2OH) 9-aminoacridine-4-carboxamides were tethered to a platinum(II)diamine moiety were synthesised and characterised at the chemical and biological level. These variants showed a decrease in cytotoxicity, as measured by IC50 values in HeLa cells, when compared with the parent 7-H, 9-NH2 compound. The 7-F and 9-NH(CH2)2OH substituents gave rise to a small decrease in cytotoxicity, and the 7-OMe substituent resulted in a larger decrease in cytotoxicity. Their binding to purified pUC19 plasmid DNA was investigated and it was found that the addition of 7-F, 9-NH(CH2)2OH and especially the 7-OMe substituents, resulted in reduced DNA binding. This correlated well with the IC50 cytotoxicity values. However, the DNA sequence selectivity was unaffected by the addition of these moieties. © 2010 Elsevier Inc.