Synthesis, structural characterization and cell death-inducing effect of novel palladium(II) and platinum(II) saccharinate complexes with 2-(hydroxymethyl)pyridine and 2-(2-hydroxyethyl)pyridine on cancer cells in vitro.
Four palladium(II) and platinum(II) saccharinate (sac) complexes with 2-(hydroxymethyl)pyridine (2-hmpy) and 2-(2-hydroxyethyl)pyridine (2-hepy), namely trans-[Pd(2-hmpy)2(sac)2]·H2O (1), trans-[Pt(2-hmpy)2(sac)2]·3H2O (2), trans-[Pd(2-hepy)2(sac)2] (3) and trans-[Pt(2-hepy)2(sac)2] (4), have been synthesized and characterized by elemental analysis, UV-vis, IR and NMR. Single crystal X-ray analysis reveals that the metal(II) ions in each complex are coordinated by two sac and two 2-hmpy or 2-hepy ligands with a trans arrangement. Anticancer effects of 1-4 were tested against four different cancer cell lines (A549 and PC3 for lung cancer, C6 for glioblastoma, and Hep3B for liver cancer). Cytotoxicity was first screened by the MTT assay and the results were further confirmed by the ATP assay. The mode of cell death was determined by both histological and biochemical methods. Among the metal complexes, complex 2 resulted in relatively stronger anti-growth effect in a dose-dependent manner (3.13-200μM), compared to the others, by inducing apoptosis.
Department of Biology, Faculty of Arts and Sciences, Uludag University, 16059 Bursa, Turkey.
Ferda
F
Ari
Nazlihan
N
Aztopal
Ceyda
C
Icsel
Veysel T
VT
Yilmaz
Emel
E
Guney
Orhan
O
Buyukgungor
Engin
E
Ulukaya
D000970:Antineoplastic Agents / Q000138:chemical synthesis* / Q000737:chemistry / Q000633:toxicity; D017209:Apoptosis / Q000187:drug effects; D053148:Caspase 3 / Q000378:metabolism; D045744:Cell Line, Tumor; D056831:Coordination Complexes / Q000138:chemical synthesis* / Q000737:chemistry / Q000633:toxicity; D018360:Crystallography, X-Ray; D006801:Humans; D007536:Isomerism; D053538:Keratin-18 / Q000378:metabolism; D008968:Molecular Conformation; D010165:Palladium / Q000737:chemistry*; D011725:Pyridines / Q000737:chemistry*; D012439:Saccharin / Q000737:chemistry; D013329:Structure-Activity Relationship
D000970:Antineoplastic Agents; D056831:Coordination Complexes; D053538:Keratin-18; D011725:Pyridines; D010165:Palladium; D053148:Caspase 3; D012439:Saccharin; C023666:pyridine
Apoptosis; Cancer; Cytotoxicity; Palladium(II) and platinum(II) complexes