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J Inorg Biochem ; 231: 111773, 2022 06.
Article in English | MEDLINE | ID: mdl-35279446

ABSTRACT

Four Pt(II) complexes of the general formula [Pt(L)(5,6-epoxy-1,10-phen)], where L is an anion of either malonic acid (mal, Pt1), 2-methylmalonic acid (Me-mal, Pt2), 2,2-dimethylmalonic acid (Me2-mal, Pt3) or 1,1-cyclobutanedicarboxylic acid (CBDCA, Pt4) and 5,6-epoxy-1,10-phen is 5,6-epoxy-5,6-dihydro-1,10-phenanthroline, were synthesized and characterized by elemental microanalysis and different spectroscopic techniques. The crystal structure of anhydrous Pt3 complex was determined by single crystal X-ray diffraction. The in vitro anticancer activity of the platinum(II) complexes was investigated in human and murine cancer cell lines as well as in a normal murine cell line by MTT assay. The results show that the investigated platinum(II) complexes exhibit potent cytotoxic activity against murine breast carcinoma cells (4T1), human (HCT116) and murine (CT26) colorectal carcinoma cells. The Pt3 complex shows stronger selectivity against cancer cells compared to other platinum(II) complexes tested and thus exhibits beneficial antitumor activity, mainly by inducing apoptosis and inhibiting cell proliferation and migration. The Pt3 complex also exhibits significant in vivo antitumor activity in the orthotopical 4T1 tumor model without detected liver, kidney, lung, and heart toxicity. All the results indicate that these novel platinum(II) complexes have good antitumor activity on breast and colorectal cancer and have the potential to become possible candidates for cancer treatment.


Subject(s)
Antineoplastic Agents , Coordination Complexes , Animals , Antineoplastic Agents/chemistry , Cell Line, Tumor , Coordination Complexes/chemistry , Drug Screening Assays, Antitumor , Humans , Malonates/pharmacology , Mice , Platinum/chemistry , Platinum/pharmacology
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