title: Effects of novel alkyl pyridine platinum complexes on apoptosis in Ishikawa endometrial cancer cells.
abstract: The aim of the present study was to examine the impact of a four platinum complexes of formula [Pt2L4(berenil)2]Cl4 where L is 3-ethylpyridine (Pt10), 3-(n-butyl)pyridine (Pt11), 4- ethylpyridine (Pt12) and 4-(t-butyl)pyridine (Pt13) on viability of Ishikawa endometrial cancer cells using the MTT assay and inhibition of [3H]thymidine incorporation into DNA. Our results confirm that compounds Pt10-Pt13 are more potent antiproliferative agents than cisplatin in endometrial cancer cells. Moreover, it was shown that all examined compounds Pt10-Pt13 inhibit collagen biosynthesis in neoplastic cells stronger than cisplatin. Flow cytometric analysis after annexin V-FITC and propidium iodide staining confirmed also that apoptosis was the main response of Ishikawa endometrial cancer cells to Pt10-Pt13 treatment. Our results suggest that apoptosis of Ishikawa endometrial cancer cell lines in the presence of Pt10-Pt13 follows the mitochondrial pathway, with the decrease in mitochondrial membrane potential and activation of caspase 9, as well as by the external pathway with the significant increase in FADD protein expression and caspase 8.
authors: Department of Synthesis and Technology of Drugs, Medical University of Białystok, Kilińskiego 1, Bialystok 15-089, Poland. robert.czarnomysy@umb.edu.pl.
authors: Robert
authors: R
authors: Czarnomysy
authors: Anna
authors: A
authors: Bielawska
authors: Anna
authors: A
authors: Muszyńska
authors: Krzysztof
authors: K
authors: Bielawski
mesh_terms: D000970:Antineoplastic Agents / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology*; D017209:Apoptosis / Q000187:drug effects*; D049109:Cell Proliferation / Q000187:drug effects; D002470:Cell Survival / Q000187:drug effects; D002478:Cells, Cultured; D004305:Dose-Response Relationship, Drug; D004354:Drug Screening Assays, Antitumor; D016889:Endometrial Neoplasms / Q000188:drug therapy* / Q000473:pathology*; D005260:Female; D005347:Fibroblasts / Q000187:drug effects; D006801:Humans; D015394:Molecular Structure; D009944:Organoplatinum Compounds / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology*; D010984:Platinum / Q000737:chemistry*; D011725:Pyridines / Q000737:chemistry*; D013329:Structure-Activity Relationship
chemical_list: D000970:Antineoplastic Agents; D009944:Organoplatinum Compounds; D011725:Pyridines; D010984:Platinum; C023666:pyridine