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Altmann S, Choroba K, Skonieczna M, Zygadło D, Raczyńska-Szajgin M, Maroń A, Małecki JG, Szłapa-Kula A, Tomczyk M, Ratuszna A, Machura B, Szurko A. Platinum(II) coordination compounds with 4'-pyridyl functionalized 2,2':6',2″-terpyridines as an alternative to enhanced chemotherapy efficacy and reduced side-effects. J Inorg Biochem 2019; 201:110809. [PMID: 31494527 DOI: 10.1016/j.jinorgbio.2019.110809] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Revised: 08/22/2019] [Accepted: 08/24/2019] [Indexed: 10/26/2022]
Abstract
Two platinum(II) coordination compounds, [PtCl(4'-R1-terpy)](SO3CF3) (1) and [PtCl(4'-R2-terpy)](SO3CF3) (2), with 4'-(2-pyridyl)-2,2':6',2″-terpyridine (4'-R1-terpy) or 4'-(3-pyridyl)-2,2':6',2″-terpyridine (4'-R2-terpy) were synthesized and the impact of the pendant pyridyl ring on the structure and cytotoxic activity of Pt(II)-terpyridine complexes was explored. The single-crystal X-ray diffraction analysis confirmed square planar coordination of the cations [PtCl(4'-Rn-terpy)]+. The mode of binding of 1 and 2 to calf thymus DNA was examined by UV-Vis absorption titration, ethidium displacement assay and reaction with 9-ethylguanine, and the mixed covalent-intercalative mode was demonstrated. The cytotoxicity of the Pt(II) complexes against six cancer cell lines and three normal ones was determined using MTS (3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium) assay and compared to cisplatin. The IC50 values for the compound 2 towards the cancer cell lines are in the low micromolar range. Most remarkably, 2 was over 4 times more effective than 1 and cisplatin against non-small lung adenocarcinoma (A549), and its selectivity index was ~60-80 times higher than that for 1 and cisplatin. The mechanisms underlying the loss of viability under treatment of 2 was further investigated including F-actin staining, mitotic index analysis, cytometric cell cycle analysis, Fluorescein isothiocyanate (FITC) -conjugated Annexin V antibody and propidium iodide (PI) staining, measurements of reactive oxygen species (ROS) in cells, analysis of changes in the mitochondrial mass and potential and quantitative real time polymerase chain reaction (qRT-PCR) genes analysis. The compound 2 was found to have a pro-oxidative effect by strong stimulation of cells for the production of reactive oxygen species and cytostatic effect through cell cycle arrest.
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Affiliation(s)
- Sandra Altmann
- Silesia Center for Education and Interdisciplinary Research, 75. Pułku Piechoty 1A, 41-500 Chorzów, Poland; August Chełkowski Institute of Physics, University of Silesia, 75. Pułku Piechoty 1A, 41-500 Chorzów, Poland
| | - Katarzyna Choroba
- Department of Crystallography, Institute of Chemistry, University of Silesia, Szkolna 9, 40-006 Katowice, Poland.
| | - Magdalena Skonieczna
- Systems Engineering Group, Silesian University of Technology, Institute of Automatic Control, Akademicka 16, 44-100 Gliwice, Poland; Biotechnology Centre, Silesian University of Technology, Krzywoustego 8, 44-100 Gliwice, Poland
| | - Dorota Zygadło
- Silesia Center for Education and Interdisciplinary Research, 75. Pułku Piechoty 1A, 41-500 Chorzów, Poland; August Chełkowski Institute of Physics, University of Silesia, 75. Pułku Piechoty 1A, 41-500 Chorzów, Poland
| | - Magdalena Raczyńska-Szajgin
- Silesia Center for Education and Interdisciplinary Research, 75. Pułku Piechoty 1A, 41-500 Chorzów, Poland; August Chełkowski Institute of Physics, University of Silesia, 75. Pułku Piechoty 1A, 41-500 Chorzów, Poland; Department of Biophysics and Morphogenesis of Plants, University of Silesia, Jagiellońska 28, 40-032 Katowice, Poland
| | - Anna Maroń
- Department of Crystallography, Institute of Chemistry, University of Silesia, Szkolna 9, 40-006 Katowice, Poland
| | - Jan Grzegorz Małecki
- Department of Crystallography, Institute of Chemistry, University of Silesia, Szkolna 9, 40-006 Katowice, Poland
| | - Agata Szłapa-Kula
- Department of Crystallography, Institute of Chemistry, University of Silesia, Szkolna 9, 40-006 Katowice, Poland
| | - Mateusz Tomczyk
- Faculty of Chemistry, Silesian University of Technology, Strzody 9, 44-100 Gliwice, Poland
| | - Alicja Ratuszna
- Silesia Center for Education and Interdisciplinary Research, 75. Pułku Piechoty 1A, 41-500 Chorzów, Poland; August Chełkowski Institute of Physics, University of Silesia, 75. Pułku Piechoty 1A, 41-500 Chorzów, Poland
| | - Barbara Machura
- Department of Crystallography, Institute of Chemistry, University of Silesia, Szkolna 9, 40-006 Katowice, Poland
| | - Agnieszka Szurko
- Silesia Center for Education and Interdisciplinary Research, 75. Pułku Piechoty 1A, 41-500 Chorzów, Poland; August Chełkowski Institute of Physics, University of Silesia, 75. Pułku Piechoty 1A, 41-500 Chorzów, Poland.
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Maroń A, Czerwińska K, Machura B, Raposo L, Roma-Rodrigues C, Fernandes AR, Małecki JG, Szlapa-Kula A, Kula S, Krompiec S. Spectroscopy, electrochemistry and antiproliferative properties of Au(iii), Pt(ii) and Cu(ii) complexes bearing modified 2,2′:6′,2′′-terpyridine ligands. Dalton Trans 2018; 47:6444-6463. [DOI: 10.1039/c8dt00558c] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Impact of the metal centre and the substituent incorporated into a terpy framework.
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