Copper(II/I) complexes of 5-pyridin-2-yl-[1,3]dioxolo[4,5-g]isoquinoline: synthesis, crystal structure, antitumor activity and DNA interaction.


:Three new copper(II) complexes of 5-pyridin-2-yl-[1,3]dioxolo[4,5-g]isoquinoline (PYP), i.e. [Cu₂(PYP)₂Cl₄] (1), [Cu₄(PYP)₄(ClO₄)₂(H₂O)₂](ClO₄)₂·2H₂O (2), and [Cu₂(PYP)2Cl4]n (3), were synthesized and fully characterized. In comparison to free PYP, complexes 1-3 exhibited enhanced cytotoxicity against tested human tumor cell lines BEL-7404, SK-OV-3, A549, A375, MGC-803 and NCI-H460, with IC₅₀ values ranging from 0.31 to 30.76 μM. Complexes 1-3 exhibited lower cytotoxicity to HL-7702 than them to cancer cells. Complex 1 induced apoptotic death of BEL-7404, which involved mitochondria in the process. Caspase-3 activation assay indicated that 1 could be an efficient activator of caspase-3. DNA binding studies by UV-vis, DNA-melting, competitive binding, CD, viscosity measurement and agarose gel electrophoresis, revealed that intercalation might be the most likely binding mode of 1 with DNA.


Eur J Med Chem


Huang KB,Chen ZF,Liu YC,Wang M,Wei JH,Xie XL,Zhang JL,Hu K,Liang H




Has Abstract


2013-01-01 00:00:00












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