title: Synthesis and characterization of a novel Pd(II) complex with the condensation product of 2-(diphenylphosphino)benzaldehyde and ethyl hydrazinoacetate. Cytotoxic activity of the synthesized complex and related Pd(II) and Pt(II) complexes.
abstract: A new palladium(II) complex 1 of the condensation product of 2-(diphenylphosphino)benzaldehyde (dpba) and ethyl hydrazinoacetate (etha) was synthesized and characterized by elemental analyses, IR, and (1)H NMR spectroscopy. The bound ligand is a bidentate (PN chromophore), the remaining two coordination places being occupied by chloride ions in overall square planar geometry. The cytotoxic activity of the complex 1 and two related Pd(II) and Pt(II) complexes 2 and 3 was tested against a panel of four tumor cell lines. The activity of the complexes was similar to that of cisplatin, the most widely used metal-based antitumor drug. It is important to notice that complexes 2 and 3 were active to cisplatin-resistant U2-OS/Pt cells. Cell cycle alteration investigation, apoptotic assay and gelatin zymography in relation to invasion and metastasis of tumor cells, were performed with all the investigated complexes on Human cervix carcinoma (HeLa) cells. The results suggest that 1 has a similar effect to cisplatin, inducing apoptosis followed by arrest of cells in S phase of cell cycle, while 2 and 3 induce apoptosis without significant perturbations of cell cycle distribution.
authors.affiliation: Laboratory for Experimental Pharmacology, Institute for Oncology and Radiology of Serbia, 11000 Belgrade, Serbia and Montenegro.
authors.forename: Nevenka
authors.initials: N
authors.lastname: Malesević
authors.forename: Tatjana
authors.initials: T
authors.lastname: Srdić
authors.forename: Sinisa
authors.initials: S
authors.lastname: Radulović
authors.forename: Dusan
authors.initials: D
authors.lastname: Sladić
authors.forename: Vesna
authors.initials: V
authors.lastname: Radulović
authors.forename: Ilija
authors.initials: I
authors.lastname: Brceski
authors.forename: Katarina
authors.initials: K
authors.lastname: Andelković
mesh_terms: D000818:Animals; D017209:Apoptosis / Q000187:drug effects; D001547:Benzaldehydes / Q000138:chemical synthesis / Q000737:chemistry*; D002453:Cell Cycle / Q000187:drug effects; D045744:Cell Line, Tumor; D002465:Cell Movement / Q000187:drug effects; D004305:Dose-Response Relationship, Drug; D005434:Flow Cytometry; D005780:Gelatin / Q000737:chemistry / Q000378:metabolism; D005998:Glycine / Q000031:analogs & derivatives* / Q000138:chemical synthesis / Q000737:chemistry; D006367:HeLa Cells; D006801:Humans; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology; D010165:Palladium / Q000737:chemistry*; D010984:Platinum / Q000737:chemistry*
chemical_list: D001547:Benzaldehydes; D009942:Organometallic Compounds; C063864:hydrazinoacetic acid; D010984:Platinum; D010165:Palladium; D005780:Gelatin; C032175:benzaldehyde; D005998:Glycine