title: DNA interaction and antiproliferative behavior of the water soluble platinum supramolecular squares [(en)Pt(N-N)]4(NO3)8 (en=ethylenediamine, N-N=4,4'-bipyridine or 1,4-bis(4-pyridyl)tetrafluorobenzene).
abstract: The interaction with DNA of two water soluble platinum supramolecular squares [(en)Pt(N-N)]4(NO3)8 (en=ethylenediamine, N-N=1,4-bis(4-pyridyl)tetrafluorobenzene, compound 1, N-N=4,4'-bipyridine, compound 2) has been studied by circular dichroism, electrophoretic mobility and atomic force microscopy. the two complexes drastically modify the second and tertiary structures of DNA, but compound 2 does it strongly due probably to its smaller size by comparison with compound 1 and its more suitable structural features for intercalation between base pairs. The two supramolecular squares were assayed against the HL-60 tumor cell line for 24 and 72 h. The IC50 values for 24 h are smaller than that of cisplatin for this time, however for 72 h the IC50 have higher values being the corresponding to compound 2 comparable to that of cisplatin. Apoptotic assays were also carried out for the compounds 1 and 2 against the tumor cell line.
authors.affiliation: Departament de Química Inorgànica, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain.
authors.forename: Mounia
authors.initials: M
authors.lastname: Mounir
authors.forename: Julia
authors.initials: J
authors.lastname: Lorenzo
authors.forename: Montserrat
authors.initials: M
authors.lastname: Ferrer
authors.forename: Maria J
authors.initials: MJ
authors.lastname: Prieto
authors.forename: Oriol
authors.initials: O
authors.lastname: Rossell
authors.forename: Francesc X
authors.initials: FX
authors.lastname: Avilès
authors.forename: Virtudes
authors.initials: V
authors.lastname: Moreno
mesh_terms: D000970:Antineoplastic Agents / Q000737:chemistry* / Q000494:pharmacology; D045744:Cell Line, Tumor; D049109:Cell Proliferation / Q000187:drug effects; D002942:Circular Dichroism; D004247:DNA / Q000737:chemistry*; D004347:Drug Interactions; D004586:Electrophoresis; D006801:Humans; D020128:Inhibitory Concentration 50; D018625:Microscopy, Atomic Force; D009944:Organoplatinum Compounds / Q000737:chemistry* / Q000494:pharmacology
chemical_list: D000970:Antineoplastic Agents; D009944:Organoplatinum Compounds; D004247:DNA