名称:
Synthesis, characterization, and biological activities of two Cu(II) and Zn(II) complexes with one polyquinoline ligand
摘要:
Two new complexes, [CuLCl]ClO4 (1) and [Zn2L2SO4(H2O)(2)](ClO4)(2) (2) [L = N,N-bis(quinolin-2-ylmethyl) quinolin-8-amine], have been synthesized and structurally characterized. The interactions of two complexes with CT-DNA have been investigated by UV absorption, fluorescence spectroscopy, viscosity measurements and gel electrophoresis under physiological conditions. Results show that the complexes bind to CT-DNA with a moderate intercalative mode and exhibit efficient DNA cleavage activity on UV-A light of 365 nm. Furthermore, two complexes could quench the intrinsic fluorescence of BSA in a static quenching process based on BSA binding experiments. Notably, in vitro cytotoxicity study of two complexes on four human tumor cells lines (7404, HeLa, MCF-7, and HepG-2) indicate that both of them have the potential to act as effective anticancer drugs with low IC50 values. (C) 2014 Elsevier B.V. All rights reserved.