Abstract
A vanadium(V) complex, [VO2(tpy)]ClO4 (1, tpy = 2,2′:6′2″-terpyridine), was synthesized and characterized by physicochemical and spectroscopic methods, as well as by single-crystal and powder X-ray diffraction analysis. Complex 1 has a five-coordinate distorted trigonal bipyramidal geometry. The in vitro cytotoxicity of complex 1 was evaluated against cell lines of liver hepatocellular carcinoma HepG-2, cervical cancer HeLa, lung carcinoma A549, osteoma sarcomatosum HOS, hepatocarcinoma BEL-7402 and normal human hepatic cells LO2 by MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) assays. The complex displays excellent antitumor activity against the selected cell lines compared with cisplatin and also exhibits lower cytotoxicity toward LO2 cells. Morphological and staining experiments demonstrated that complex 1 induces BEL-7402 cell apoptosis mediated through reactive oxygen species, DNA fragmentation and decrease in mitochondrial membrane potential. In addition, cell cycle distribution investigations showed that complex 1 inhibits cell growth at the G0/G1 phase.
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Acknowledgements
This work was financially supported by the Natural Science Foundation of Guangdong Province (Nos. 2014A030307015, 2016A030307048), Featured Innovation in Colleges and Universities of Guangdong Province Project (2014KTSCX169) and Shaoguan University.
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Hong, XL., Liu, LJ., Lu, WG. et al. A vanadium(V) terpyridine complex: synthesis, characterization, cytotoxicity in vitro and induction of apoptosis in cancer cells. Transit Met Chem 42, 459–467 (2017). https://doi.org/10.1007/s11243-017-0150-z
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DOI: https://doi.org/10.1007/s11243-017-0150-z