Cisplatin and its dibromido analogue: a comparison of chemical and biological profiles |
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| Authors: | Tiziano Marzo Gianluca Bartoli Chiara Gabbiani Gennaro Pescitelli Mirko Severi Serena Pillozzi Elena Michelucci Benedetta Fiorini Annarosa Arcangeli Adóracion G Quiroga Luigi Messori |
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| Institution: | 1.Laboratory of Metals in Medicine (MetMed), Department of Chemistry,University of Florence,Sesto Fiorentino,Italy;2.Department of Chemistry and Industrial Chemistry,University of Pisa,Pisa,Italy;3.Department of Experimental and Clinical Medicine,University of Florence,Florence,Italy;4.Department of Chemistry,University of Florence,Sesto Fiorentino,Italy;5.Mass Spectrometry Centre (CISM),University of Florence,Sesto Fiorentino,Italy;6.Department of Inorganic Chemistry,Universidad Autonóma de Madrid,Madrid,Spain |
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| Abstract: | The dibromido analogue of cisplatin, cis-PtBr2(NH3)2 (cisPtBr2 hereafter), has been prepared and characterised. Its solution behaviour in standard phosphate buffer, at pH 7.4, was investigated spectrophotometrically and found to reproduce quite closely that of cisplatin; indeed, progressive sequential release of the two halide ligands typically occurs as in the case of cisplatin, with a roughly similar kinetics. Afterward, patterns of reactivity toward model proteins and standard ctDNA were explored and the nature of the resulting interactions elucidated. The antiproliferative properties were then evaluated in four representative cancer cell lines, namely A549 (human lung cancer), HCT116 (human colon cancer), IGROV-1 (human ovarian cancer) and FLG 29.1 (human acute myeloid leukaemia). Cytotoxic properties in line with those of cisplatin were highlighted. From these studies an overall chemical and biological profile emerges for cisPtBr2 closely matching that of cisplatin; the few slight, but meaningful differences that were underscored might be advantageously exploited for clinical application. |
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