Journal
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
Volume 19, Issue 7, Pages -Publisher
MDPI
DOI: 10.3390/ijms19071874
Keywords
quinolinyl hydrazine; copper(II) complex; cytotoxicity; apoptosis
Funding
- National Natural Science Foundation of China [81473102, 21431001]
- Natural Science Foundation of Guangxi Province [2012GXNSFDA053005]
- Innovation Project of Guangxi Graduate Education [YCBZ2018033]
- BAGUI Scholar program of Guangxi Province of China
- [IRT_16R15]
- [CMEMR2012-A22]
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Two transition metal complexes with 2-((2-(pyridin-2-yl)hydrazono)methyl)quinolin-8-ol (L), [Cu(L)Cl-2](2) (1) and [Ni(L)Cl-2]center dot CH2Cl2 (2), were synthesized and fully characterized. Complex 1 exhibited high in vitro antitumor activity against SK-OV-3, MGC80-3 and HeLa cells with IC50 values of 3.69 +/- 0.16, 2.60 +/- 0.17, and 3.62 +/- 0.12 mu M, respectively. In addition, complex 1 caused cell arrest in the S phase, which led to the down-regulation of Cdc25 A, Cyclin B, Cyclin A, and CDK2, and the up-regulation of p27, p21, and p53 proteins in MGC80-3 cells. Complex 1 induced MGC80-3 cell apoptosis via a mitochondrial dysfunction pathway, as shown by the significantly decreased level of bcl-2 protein and the loss of Delta psi, as well as increased levels of reactive oxygen species (ROS), intracellular Ca2+, cytochrome C, apaf-1, caspase-3, and caspase-9 proteins in MGC80-3 cells.
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