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Articles by Zheng-Zheng Li
Total Records ( 1 ) for Zheng-Zheng Li
  Zhen-Hua Liang , Zheng-Zheng Li , Hong-Liang Huang and Yun-Jun Liu
  Two new ruthenium(II) complexes, [Ru(dmp)2(APIP)](ClO4)2 (1) (APIP = 2-(2-aminophenylimidazo[4,5-f][1,10]phenanthroline), dmp = 2,9-dimethyl-1,10-phenanthroline) and [Ru(dmp)2(HAPIP)](ClO4)2 (2) (HAPIP = 2-(2-hydroxyl-5-aminophenyl)imidazo[4,5-f][1,10]phenanthroline), were synthesized and characterized. The DNA-binding properties of these complexes were investigated by absorption titration, viscosity measurements, and photoactivated cleavage. The DNA-binding constants for 1 and 2 have been determined to be 2.3 (± 0.3) x 104 (mol L−1)−1 and 3.3 (± 0.4) x 104 (mol L−1)−1. The results indicate that 1 and 2 interact with DNA through intercalative mode. The cytotoxicities of 1 and 2 were assessed against BEL-7402, HepG-2 and MCF-7 cell lines using standard MTT assay. The apoptosis induced by these complexes was studied with the acridine orange/ethidium bromide staining method. The antioxidant activity on hydroxyl radical was also investigated.
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