Abstract
Inhibition of the growth of LoVo human colon adenocarcinoma and MiaPaCa pancreatic cancer cell lines by two new organometallic ruthenium(II) complexes of general formula [Ru(eta(5)-C(5)H(5))(PP) L][CF(3)SO(3)], where PP is 1,2-bis(diphenylphosphino)ethane and L is 1,3,5-triazine (Tzn) 1 or PP is 2x triphenylphosphine and L is pyridazine (Pyd) 2 has been investigated. Crystal structures of compounds 1 and 2 were determined by X-ray diffraction studies. Atomic force microscopy (AFM) images suggest different mechanisms of interaction with the plasmid pBR322 DNA; while the mode of binding of compound 1 could be intercalation between base pairs of DNA, compound 2 might be involved in a covalent bond formation with N from the purine base.
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