期刊
JOURNAL OF BIOLOGICAL INORGANIC CHEMISTRY
卷 26, 期 6, 页码 727-740出版社
SPRINGER
DOI: 10.1007/s00775-021-01888-2
关键词
Copper(||); Palladium(||); Cisplatin; DNA interaction; Cleavage; Molecular docking
资金
- CRUE-CSIC
- Springer Nature
The two square-planar coordination compounds interact differently with DNA, with the palladium(II) complex showing stronger binding leading to double strand cleavage, while the copper complex has weaker and concentration dependent binding.
Two square-planar coordination compounds, namely [Cu(CPYA)Cl-2] (1) and [Pd(CPYA)Cl-2] (2), were prepared from the ligand 4-chloro-N-(pyridin-2-ylmethyl)aniline (CPYA) and two chloride salts, and were fully characterized, including by X-ray diffraction. Spectroscopic, electrophoretic and AFM studies revealed that the two isostructural compounds were interacting differently with DNA. In both cases, the initial interaction involves electrostatic contacts of the CPYA ligand in the minor groove (as suggested by molecular docking), but subsequent strong binding occurs with the palladium(II) complex 2, whereas the binding with the copper complex 1 is weaker and concentration dependent. The strong binding of 2 eventually leads to the cleavage of the double strand and the redox activity of 1 allows to oxidatively cleave the biomolecule. Graphic abstract
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