| Autor: |
Corral E; Leiden Institute of Chemistry, Gorlaeus Laboratories, Leiden University, P.O. Box 9502, 2300 RA, Leiden, The Netherlands., Hotze AC, den Dulk H, Leczkowska A, Rodger A, Hannon MJ, Reedijk J |
| Jazyk: |
angličtina |
| Zdroj: |
Journal of biological inorganic chemistry : JBIC : a publication of the Society of Biological Inorganic Chemistry [J Biol Inorg Chem] 2009 Mar; Vol. 14 (3), pp. 439-48. Date of Electronic Publication: 2008 Dec 16. |
| DOI: |
10.1007/s00775-008-0460-x |
| Abstrakt: |
Various interaction modes between a group of six ruthenium polypyridyl complexes and DNA have been studied using a number of spectroscopic techniques. Five mononuclear species were selected with formula [Ru(tpy)L(1)L(2)]((2-n)+), and one closely related dinuclear cation of formula [{Ru(apy)(tpy)}(2){mu-H(2)N(CH(2))(6)NH(2)}](4+). The ligand tpy is 2,2':6',2''-terpyridine and the ligand L(1) is a bidentate ligand, namely, apy (2,2'-azobispyridine), 2-phenylazopyridine, or 2-phenylpyridinylmethylene amine. The ligand L(2) is a labile monodentate ligand, being Cl(-), H(2)O, or CH(3)CN. All six species containing a labile L(2) were found to be able to coordinate to the DNA model base 9-ethylguanine by (1)H NMR and mass spectrometry. The dinuclear cationic species, which has no positions available for coordination to a DNA base, was studied for comparison purposes. The interactions between a selection of four representative complexes and calf-thymus DNA were studied by circular and linear dichroism. To explore a possible relation between DNA-binding ability and toxicity, all compounds were screened for anticancer activity in a variety of cancer cell lines, showing in some cases an activity which is comparable to that of cisplatin. Comparison of the details of the compound structures, their DNA binding, and their toxicity allows the exploration of structure-activity relationships that might be used to guide optimization of the activity of agents of this class of compounds. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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