Journal
INORGANICA CHIMICA ACTA
Volume 497, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.ica.2019.119062
Keywords
8-Hydroxyquinoline-5-sulfonic acid; 3d metals complexes; Anti-tumor activity; HeLa; HCT116; MRC-5
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Funding
- Slovak grant agencies [VEGA 1/0148/19, APVV-18-0016]
- Ministry of Education, Science and Technological Development of the Republic of Serbia [III41010, OI173032]
- ASTRA lab within the Operation program Prague Competitiveness [CZ.2.16/3.1.00/24510]
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Five 3d metal [M(H2O)(2)(SQ)](n) complexes, where M is Mn (1), Co (2), Ni (3), Zn (4) and Cu (5), and SQ is the dianion of 8-hydroxyquinoline-5-sulfonic acid have been prepared and characterized by IR spectroscopy and elemental analysis. X-ray structure analysis of 1 and 5 in combination with IR spectroscopy of all five complexes showed that complexes 1-4 are isostructural 2D polymers, while 5 is 1D polymer due to the different bonding character of SQ. Stability of all complexes in DMSO was proved by UV-Vis spectroscopy and for 4 also verified by H-1 and C-13 NMR spectroscopy. Cytotoxic activity tests against cervical carcinoma HeLa, colon carcinoma HCT116 and normal human fibroblast MRC-5 cell lines showed moderate but selective cytotoxicity of all complexes. Complex 1 exhibited highest activity with IC50 = 39.1 and 33.4 mu M, respectively, but is lower than activity of cisplatin (CP) which IC50 = 24.3 and 14.3 mu M, respectively. However, their cytotoxic activity against healthy MRC-5 cells (IC50 > 92 mu M) is much lower than CP (IC50 = 19.7 mu M). Antimicrobial activity of all complexes against 9 strains of pathogenic bacteria, five mould species and two yeast species is negligible.
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