NDLI: Iron(iii) and nickel(ii) complexes as potential anticancer agents: synthesis, physicochemical and structural properties, cytotoxic activity and DNA interactions

Content Provider	Royal Society of Chemistry (RSC)
Author	Erdem-Kuruca, Serap Bal-Demirci, Tülay Özdemir, Namık Akgün-Dar, Kadriye Congur, Gulsah Varol, Başak Ülküseven, Bahri Erdem, Arzum
Copyright Year	2015
Abstract	Template reactions of 2-hydroxy-R-benzaldehyde-S-methylisothiosemicarbazones (R = 3-methoxy or 4-hydroxy) with the corresponding aldehydes in the presence of FeCl3 and NiCl2 yielded N1,N4-disalicylidene chelate complexes. The compounds were characterized by means of elemental and spectroscopic methods. The structure of complex 1 was determined by X-ray single crystal diffraction. Crystal data (Mo Kα; 296 K) are as follows: monoclinic space group P21/c, a = 12.9857(8) Å, b = 7.8019(4) Å, c = 19.1976(12) Å, β = 101.655(5)°, Z = 4. Cytotoxic effects of the compounds were evaluated by the MTT assay in K562 leukemia, ECV304 endothelial and normal mononuclear cells, and DNA fragmentation analysis using the diphenylamine reaction was performed. The DNA binding capacity of thiosemicarbazones at IC50 and different concentrations was investigated. The DNA fragmentation percentage of compound treated cells was higher than that of non-treated control cells but was higher for compound 3 (84%) compared to the others. The interaction of compounds 1–4 and DNA was investigated voltammetrically by using nucleic acid modified electrodes after the double stranded fish sperm DNA (fsDNA), or poly(dA)·poly(dT), was immobilized onto the surface of pencil graphite electrodes (PGEs). Accordingly, the oxidation signals of DNA bases, guanine and adenine, were measured by using differential pulse voltammetry (DPV). The changes in the signals of guanine and adenine were evaluated before and after the interaction process. The results indicated that compound 3 was cytotoxic at very low concentrations in K562 leukemia cells unlike other cells and that could damage the DNA double stranded form, specifically the adenine base. Therefore, it may have a selective antileukemic effect and drug potential.
Starting Page	5643
Ending Page	5653
Page Count	11
File Format	HTM / HTML PDF
ISSN	11440546
Volume Number	39
Issue Number	7
Journal	New Journal of Chemistry
DOI	10.1039/c5nj00594a
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Mo Monoclinic crystal system Neutron diffraction Leukemia Cytotoxicity MTT Diphenylamine MTT assay Guanine X-ray crystallography K562 cells Carboxylic acid DNA fragmentation IC50 Semicarbazone Methoxy group Space group Differential pulse voltammetry Adenine Endothelium Spermatozoon DNA Graphite Group N Nickel(II) chloride
Content Type	Text
Resource Type	Article
Subject	Chemistry Materials Chemistry Catalysis

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