TY  - JOUR
AU  - Margetić, Aleksandra
AU  - Nikolić, Stefan
AU  - Grgurić-Šipka, Sanja
AU  - Vujčić, Miroslava
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5512
AB  - The interaction of four arene ruthenium complexes [(η6-p-cymene)Ru(Me2dppz)Cl]PF6 (1) with Me2dppz = 11,12-dimethyldipyrido[3,2-a:2′,3′-c]phenazine, [(η6-p-cymene)Ru(aip)Cl]PF6 (2) with aip = 2-(9-anthryl)-1H-imidazo[4,5-f][1,10] phenanthroline), ([(ƞ6-toluene)Ru(ppf)Cl]PF6) (3) and ([(ƞ6-p-cymene)Ru(ppf)Cl]PF6) (4) with ppf = pyrido[2′,3′:5,6] pyrazino[2,3-f][1,10]phenanthroline with calf thymus DNA were investigated. All of four complexes exhibit DNA-binding activity. UV–Vis spectroscopic studies revealed the intrinsic binding constants of the order 104 M−1 of magnitude, indicating non-intercalative mode. Fluorescence quenching analysis showed that all complexes interfere with intercalator ethidium bromide and minor groove binder Hoechst 33258 by a singular non-intercalative mode with extent that differs by two orders of magnitude. Gel electrophoresis results on DNA cleavage assay demonstrated that all complexes produced conformational changes of supercoiled circular plasmid pUC19 in concentration dependent way. The results of fluorescence titration bovine serum albumin by 1, 2, 3 and 4 showed that all complexes significantly quench tryptophan residues fluorescence through a static quenching mechanism. The antimicrobial activity against both Gram-positive and Gram-negative bacteria analyzed. Complex 1 was most active, even on Escherichia coli was more active than positive control compound.
PB  - Springer
T2  - BioMetals
T1  - Interaction of organoruthenium(II)-polypyridyl complexes with DNA and BSA
VL  - 35
IS  - 4
SP  - 813
EP  - 829
DO  - 10.1007/s10534-022-00404-6
ER  - 

@article{
author = "Margetić, Aleksandra and Nikolić, Stefan and Grgurić-Šipka, Sanja and Vujčić, Miroslava",
year = "2022",
abstract = "The interaction of four arene ruthenium complexes [(η6-p-cymene)Ru(Me2dppz)Cl]PF6 (1) with Me2dppz = 11,12-dimethyldipyrido[3,2-a:2′,3′-c]phenazine, [(η6-p-cymene)Ru(aip)Cl]PF6 (2) with aip = 2-(9-anthryl)-1H-imidazo[4,5-f][1,10] phenanthroline), ([(ƞ6-toluene)Ru(ppf)Cl]PF6) (3) and ([(ƞ6-p-cymene)Ru(ppf)Cl]PF6) (4) with ppf = pyrido[2′,3′:5,6] pyrazino[2,3-f][1,10]phenanthroline with calf thymus DNA were investigated. All of four complexes exhibit DNA-binding activity. UV–Vis spectroscopic studies revealed the intrinsic binding constants of the order 104 M−1 of magnitude, indicating non-intercalative mode. Fluorescence quenching analysis showed that all complexes interfere with intercalator ethidium bromide and minor groove binder Hoechst 33258 by a singular non-intercalative mode with extent that differs by two orders of magnitude. Gel electrophoresis results on DNA cleavage assay demonstrated that all complexes produced conformational changes of supercoiled circular plasmid pUC19 in concentration dependent way. The results of fluorescence titration bovine serum albumin by 1, 2, 3 and 4 showed that all complexes significantly quench tryptophan residues fluorescence through a static quenching mechanism. The antimicrobial activity against both Gram-positive and Gram-negative bacteria analyzed. Complex 1 was most active, even on Escherichia coli was more active than positive control compound.",
publisher = "Springer",
journal = "BioMetals",
title = "Interaction of organoruthenium(II)-polypyridyl complexes with DNA and BSA",
volume = "35",
number = "4",
pages = "813-829",
doi = "10.1007/s10534-022-00404-6"
}

Margetić, A., Nikolić, S., Grgurić-Šipka, S.,& Vujčić, M.. (2022). Interaction of organoruthenium(II)-polypyridyl complexes with DNA and BSA. in BioMetals
Springer., 35(4), 813-829.
https://doi.org/10.1007/s10534-022-00404-6

Margetić A, Nikolić S, Grgurić-Šipka S, Vujčić M. Interaction of organoruthenium(II)-polypyridyl complexes with DNA and BSA. in BioMetals. 2022;35(4):813-829.
doi:10.1007/s10534-022-00404-6 .

Margetić, Aleksandra, Nikolić, Stefan, Grgurić-Šipka, Sanja, Vujčić, Miroslava, "Interaction of organoruthenium(II)-polypyridyl complexes with DNA and BSA" in BioMetals, 35, no. 4 (2022):813-829,
https://doi.org/10.1007/s10534-022-00404-6 . .

TY  - JOUR
AU  - Mihajlović-Lalić, Ljiljana E.
AU  - Stanković, Dalibor
AU  - Novaković, Irena
AU  - Grgurić-Šipka, Sanja
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5619
AB  - Three ruthenium-bipyridine complexes (1–3) carrying acetylpyridine ligand unit were synthesized in methanol via the reaction of [RuCl2(bpy)2] with corresponding acetylpyridine (2-, 3-, and 4-acpy). Obtained complexes were characterized by (1H and 13C) NMR and IR spectroscopy, MS spectrometry, UV‒vis spectrophotometry, and cyclic voltammetry. Their structural characterization revealed bidentate coordination mode for 2-acpy while 3- and 4-acpy acted as monodentate ligands. The electrochemical profile of newly synthesized compounds was investigated by cyclic voltammetry which confirmed their electrochemical activity. Voltammetric responses within the −1.20 < Ep < 1.50 V range of potentials were summarized in two major events: Ru(II)→Ru(III) oxidation spotted at app. ΔEp = 0.65 V and successive reductions of bpy units located from ‒0.79 V to 0.47 V (vs. Ag/AgCl (3 M) electrode). The DNA-binding activity of the complexes was evaluated by both UV‒vis spectrophotometry and cyclic voltammetry indicating DNA-intercalation with a slight contribution of electrostatic interactions. Furthermore, antimicrobial activity was tested against bacterial and fungal strains, for which moderate activity was observed. Assessment of in vitro toxicity against freshly hatched nauplii of Artemia salina as well as radical scavenging capacity was evaluated. The test compounds showed neither toxicity nor antioxidant activity.
PB  - Informa UK Limited
T2  - Journal of Coordination Chemistry
T1  - (Electro)chemical and antimicrobial characterization of novel Ru(II) bipyridine complexes with acetylpyridine analogs
VL  - 75
IS  - 7-8
SP  - 1035
EP  - 1049
DO  - 10.1080/00958972.2022.2090247
ER  - 

@article{
author = "Mihajlović-Lalić, Ljiljana E. and Stanković, Dalibor and Novaković, Irena and Grgurić-Šipka, Sanja",
year = "2022",
abstract = "Three ruthenium-bipyridine complexes (1–3) carrying acetylpyridine ligand unit were synthesized in methanol via the reaction of [RuCl2(bpy)2] with corresponding acetylpyridine (2-, 3-, and 4-acpy). Obtained complexes were characterized by (1H and 13C) NMR and IR spectroscopy, MS spectrometry, UV‒vis spectrophotometry, and cyclic voltammetry. Their structural characterization revealed bidentate coordination mode for 2-acpy while 3- and 4-acpy acted as monodentate ligands. The electrochemical profile of newly synthesized compounds was investigated by cyclic voltammetry which confirmed their electrochemical activity. Voltammetric responses within the −1.20 < Ep < 1.50 V range of potentials were summarized in two major events: Ru(II)→Ru(III) oxidation spotted at app. ΔEp = 0.65 V and successive reductions of bpy units located from ‒0.79 V to 0.47 V (vs. Ag/AgCl (3 M) electrode). The DNA-binding activity of the complexes was evaluated by both UV‒vis spectrophotometry and cyclic voltammetry indicating DNA-intercalation with a slight contribution of electrostatic interactions. Furthermore, antimicrobial activity was tested against bacterial and fungal strains, for which moderate activity was observed. Assessment of in vitro toxicity against freshly hatched nauplii of Artemia salina as well as radical scavenging capacity was evaluated. The test compounds showed neither toxicity nor antioxidant activity.",
publisher = "Informa UK Limited",
journal = "Journal of Coordination Chemistry",
title = "(Electro)chemical and antimicrobial characterization of novel Ru(II) bipyridine complexes with acetylpyridine analogs",
volume = "75",
number = "7-8",
pages = "1035-1049",
doi = "10.1080/00958972.2022.2090247"
}

Mihajlović-Lalić, L. E., Stanković, D., Novaković, I.,& Grgurić-Šipka, S.. (2022). (Electro)chemical and antimicrobial characterization of novel Ru(II) bipyridine complexes with acetylpyridine analogs. in Journal of Coordination Chemistry
Informa UK Limited., 75(7-8), 1035-1049.
https://doi.org/10.1080/00958972.2022.2090247

Mihajlović-Lalić LE, Stanković D, Novaković I, Grgurić-Šipka S. (Electro)chemical and antimicrobial characterization of novel Ru(II) bipyridine complexes with acetylpyridine analogs. in Journal of Coordination Chemistry. 2022;75(7-8):1035-1049.
doi:10.1080/00958972.2022.2090247 .

Mihajlović-Lalić, Ljiljana E., Stanković, Dalibor, Novaković, Irena, Grgurić-Šipka, Sanja, "(Electro)chemical and antimicrobial characterization of novel Ru(II) bipyridine complexes with acetylpyridine analogs" in Journal of Coordination Chemistry, 75, no. 7-8 (2022):1035-1049,
https://doi.org/10.1080/00958972.2022.2090247 . .

TY  - CONF
AU  - Margetić, Aleksandra
AU  - Nikolić, Stefan
AU  - Mihajlović-Lalić, Ljiljana E.
AU  - Vujčić, Zoran
AU  - Grgurić-Šipka, Sanja
AU  - Vujčić, Miroslava
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5838
AB  - Few studies concerning antibacterial activity of ruthenium complexes have been published but all of them have been performed on small limited number of strains 1,2. In this study complex 1 ([(η6-toluene)Ru(ppf)Cl]PF6) and complex 2 ([(η6-p-cymene)Ru(ppf)Cl]PF6) where ppf is pyrido[2′,3′:5,6]pyrazino[2,3-f][1,10]phenanthrolinewere investigated as antibacterial agents. Previous study proved the cytotoxicity of these compounds 3. The structural difference between 1 and 2 reflected through the presence or absence of isopropyl group onto one of the ligand (toluene), resulted in significant different activity against melanoma cells 3. Five strains of Gram-positive bacteria (C. sporagenes, M. flavus, B. subtilis, S. lutea and S. aureus), and four strains of Gram-negative bacteria (S.
enteritidis, P. vulgaris, P. aeruginosa and E. coli) were used for study of antibacterial activity of 1 and 2. While 2 did not show activity against most strains, complex 1 showed good results against all strains, but the best against Clostridium sporagenes and Proteus vulgaris. The obtained antibacterial activity of the complexes was in accordance with the nuclease activity obtained by plasmid DNA cleavage study. Complex 2 showed higher damaging effect to supercoiled DNA, than complex 1. Minor structural modifications of arene moiety resulted in major difference in activity of the complexes.
PB  - University of Belgrade - Faculty of Chemistry
PB  - Serbian Biochemical Society
C3  - Proceedings - X Conference of Serbian Biochemical Society with international participation, “Biochemical Insights into Molecular Mechanisms”, 24.09.2021. Kragujevac, Serbia, 2021
T1  - Antibacterial activity of polypiridinearene ruthenium(II) complexes
SP  - 85
EP  - 86
UR  - https://hdl.handle.net/21.15107/rcub_cer_5838
ER  - 

@conference{
author = "Margetić, Aleksandra and Nikolić, Stefan and Mihajlović-Lalić, Ljiljana E. and Vujčić, Zoran and Grgurić-Šipka, Sanja and Vujčić, Miroslava",
year = "2021",
abstract = "Few studies concerning antibacterial activity of ruthenium complexes have been published but all of them have been performed on small limited number of strains 1,2. In this study complex 1 ([(η6-toluene)Ru(ppf)Cl]PF6) and complex 2 ([(η6-p-cymene)Ru(ppf)Cl]PF6) where ppf is pyrido[2′,3′:5,6]pyrazino[2,3-f][1,10]phenanthrolinewere investigated as antibacterial agents. Previous study proved the cytotoxicity of these compounds 3. The structural difference between 1 and 2 reflected through the presence or absence of isopropyl group onto one of the ligand (toluene), resulted in significant different activity against melanoma cells 3. Five strains of Gram-positive bacteria (C. sporagenes, M. flavus, B. subtilis, S. lutea and S. aureus), and four strains of Gram-negative bacteria (S.
enteritidis, P. vulgaris, P. aeruginosa and E. coli) were used for study of antibacterial activity of 1 and 2. While 2 did not show activity against most strains, complex 1 showed good results against all strains, but the best against Clostridium sporagenes and Proteus vulgaris. The obtained antibacterial activity of the complexes was in accordance with the nuclease activity obtained by plasmid DNA cleavage study. Complex 2 showed higher damaging effect to supercoiled DNA, than complex 1. Minor structural modifications of arene moiety resulted in major difference in activity of the complexes.",
publisher = "University of Belgrade - Faculty of Chemistry, Serbian Biochemical Society",
journal = "Proceedings - X Conference of Serbian Biochemical Society with international participation, “Biochemical Insights into Molecular Mechanisms”, 24.09.2021. Kragujevac, Serbia, 2021",
title = "Antibacterial activity of polypiridinearene ruthenium(II) complexes",
pages = "85-86",
url = "https://hdl.handle.net/21.15107/rcub_cer_5838"
}

Margetić, A., Nikolić, S., Mihajlović-Lalić, L. E., Vujčić, Z., Grgurić-Šipka, S.,& Vujčić, M.. (2021). Antibacterial activity of polypiridinearene ruthenium(II) complexes. in Proceedings - X Conference of Serbian Biochemical Society with international participation, “Biochemical Insights into Molecular Mechanisms”, 24.09.2021. Kragujevac, Serbia, 2021
University of Belgrade - Faculty of Chemistry., 85-86.
https://hdl.handle.net/21.15107/rcub_cer_5838

Margetić A, Nikolić S, Mihajlović-Lalić LE, Vujčić Z, Grgurić-Šipka S, Vujčić M. Antibacterial activity of polypiridinearene ruthenium(II) complexes. in Proceedings - X Conference of Serbian Biochemical Society with international participation, “Biochemical Insights into Molecular Mechanisms”, 24.09.2021. Kragujevac, Serbia, 2021. 2021;:85-86.
https://hdl.handle.net/21.15107/rcub_cer_5838 .

Margetić, Aleksandra, Nikolić, Stefan, Mihajlović-Lalić, Ljiljana E., Vujčić, Zoran, Grgurić-Šipka, Sanja, Vujčić, Miroslava, "Antibacterial activity of polypiridinearene ruthenium(II) complexes" in Proceedings - X Conference of Serbian Biochemical Society with international participation, “Biochemical Insights into Molecular Mechanisms”, 24.09.2021. Kragujevac, Serbia, 2021 (2021):85-86,
https://hdl.handle.net/21.15107/rcub_cer_5838 .

TY  - JOUR
AU  - Pavlović, Marijana
AU  - Nikolić, Stefan
AU  - Gligorijević, Nevenka
AU  - Dojčinović, Biljana
AU  - Aranđelović, Sandra
AU  - Grgurić-Šipka, Sanja
AU  - Radulović, Siniša
PY  - 2019
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2963
AB  - Three new ruthenium(II)-arene complexes with pyrido[2′,3′:5,6]pyrazino[2,3-f][1, 10]phenanthroline (ppf) of general formula: C1 ([(ƞ 6 -benzene)Ru(ppf)Cl]PF 6 , C2 ([(ƞ 6 -toluene)Ru(ppf)Cl]PF 6 ) and C3 ([(ƞ 6 -p-cymene)Ru(ppf)Cl]PF 6 ) have been synthesized. The structures of complexes were determined by elemental analysis, IR, ESI–MS, as well as with 1 H and 13 C NMR spectroscopy. Cytotoxic activity has been evaluated in three different human neoplastic cell lines (A549, A375, LS 174T) and in one human non-tumor cell line (MRC-5), by the MTT assay. Complexes C1–C3 showed IC 50 values in the micromolar range below 100 µM. Complex C3, carrying ƞ 6 -p-cymene as the arene ligand, exhibited cytoselective activity toward human malignant melanoma A375 cells (IC 50 = 15.8 ± 2.7 µM), and has been selected for further analyses of its biological effects. Drug-accumulation study performed in the A375 cells disclosed that C3 possess lower ability of entering the cells compared to cisplatin and distributes approximately equally in the cytosol and membrane/organelle fraction of cells. Investigations in the 3D model of A375 cells, disclosed different effects of the complex C3 and cisplatin on growth of multicellular tumor spheroids (MCTSs). While the size of cisplatin-treated MCTSs decreased with time, MCTSs treated with C3 continued to growth. Differences in structural organization and biological activity of this type of ruthenium(II)-arene complexes versus cisplatin in A375 malignant melanoma cells pointed out their different modes of action, and necessity for further biological studies and optimizations for potential applications.
PB  - Springer Link
T2  - Journal of Biological Inorganic Chemistry
T1  - New organoruthenium compounds with pyrido[2′,3′:5,6]pyrazino[2,3-f][1, 10]phenanthroline: synthesis, characterization, cytotoxicity, and investigation of mechanism of action
VL  - 24
IS  - 2
SP  - 297
EP  - 310
DO  - 10.1007/s00775-019-01647-4
ER  - 

@article{
author = "Pavlović, Marijana and Nikolić, Stefan and Gligorijević, Nevenka and Dojčinović, Biljana and Aranđelović, Sandra and Grgurić-Šipka, Sanja and Radulović, Siniša",
year = "2019",
abstract = "Three new ruthenium(II)-arene complexes with pyrido[2′,3′:5,6]pyrazino[2,3-f][1, 10]phenanthroline (ppf) of general formula: C1 ([(ƞ 6 -benzene)Ru(ppf)Cl]PF 6 , C2 ([(ƞ 6 -toluene)Ru(ppf)Cl]PF 6 ) and C3 ([(ƞ 6 -p-cymene)Ru(ppf)Cl]PF 6 ) have been synthesized. The structures of complexes were determined by elemental analysis, IR, ESI–MS, as well as with 1 H and 13 C NMR spectroscopy. Cytotoxic activity has been evaluated in three different human neoplastic cell lines (A549, A375, LS 174T) and in one human non-tumor cell line (MRC-5), by the MTT assay. Complexes C1–C3 showed IC 50 values in the micromolar range below 100 µM. Complex C3, carrying ƞ 6 -p-cymene as the arene ligand, exhibited cytoselective activity toward human malignant melanoma A375 cells (IC 50 = 15.8 ± 2.7 µM), and has been selected for further analyses of its biological effects. Drug-accumulation study performed in the A375 cells disclosed that C3 possess lower ability of entering the cells compared to cisplatin and distributes approximately equally in the cytosol and membrane/organelle fraction of cells. Investigations in the 3D model of A375 cells, disclosed different effects of the complex C3 and cisplatin on growth of multicellular tumor spheroids (MCTSs). While the size of cisplatin-treated MCTSs decreased with time, MCTSs treated with C3 continued to growth. Differences in structural organization and biological activity of this type of ruthenium(II)-arene complexes versus cisplatin in A375 malignant melanoma cells pointed out their different modes of action, and necessity for further biological studies and optimizations for potential applications.",
publisher = "Springer Link",
journal = "Journal of Biological Inorganic Chemistry",
title = "New organoruthenium compounds with pyrido[2′,3′:5,6]pyrazino[2,3-f][1, 10]phenanthroline: synthesis, characterization, cytotoxicity, and investigation of mechanism of action",
volume = "24",
number = "2",
pages = "297-310",
doi = "10.1007/s00775-019-01647-4"
}

Pavlović, M., Nikolić, S., Gligorijević, N., Dojčinović, B., Aranđelović, S., Grgurić-Šipka, S.,& Radulović, S.. (2019). New organoruthenium compounds with pyrido[2′,3′:5,6]pyrazino[2,3-f][1, 10]phenanthroline: synthesis, characterization, cytotoxicity, and investigation of mechanism of action. in Journal of Biological Inorganic Chemistry
Springer Link., 24(2), 297-310.
https://doi.org/10.1007/s00775-019-01647-4

Pavlović M, Nikolić S, Gligorijević N, Dojčinović B, Aranđelović S, Grgurić-Šipka S, Radulović S. New organoruthenium compounds with pyrido[2′,3′:5,6]pyrazino[2,3-f][1, 10]phenanthroline: synthesis, characterization, cytotoxicity, and investigation of mechanism of action. in Journal of Biological Inorganic Chemistry. 2019;24(2):297-310.
doi:10.1007/s00775-019-01647-4 .

Pavlović, Marijana, Nikolić, Stefan, Gligorijević, Nevenka, Dojčinović, Biljana, Aranđelović, Sandra, Grgurić-Šipka, Sanja, Radulović, Siniša, "New organoruthenium compounds with pyrido[2′,3′:5,6]pyrazino[2,3-f][1, 10]phenanthroline: synthesis, characterization, cytotoxicity, and investigation of mechanism of action" in Journal of Biological Inorganic Chemistry, 24, no. 2 (2019):297-310,
https://doi.org/10.1007/s00775-019-01647-4 . .

TY  - JOUR
AU  - Nikolić, Stefan
AU  - Grgurić-Šipka, Sanja
AU  - Đorđević, Ivana
AU  - Dahmani, Rahma
AU  - Dekanski, Dragana
AU  - Vidičević, Sašenka
AU  - Tošić, Jelena
AU  - Mitić, Dragana
AU  - Grubišić, Sonja
PY  - 2019
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3259
AB  - In search for antitumor metal-based drugs that would mitigate the severe side-effects of cisplatin, Ru(II) complexes are gaining increasing recent interest. In this work, we report on the synthesis, characterization (1H- and 13C-NMR, FT-IR), and cytotoxicity studies of two new half-sandwich organometallic Ru(II) complexes of the general formula [Ru(η6-arene)(XY)Cl](PF6) where arene = benzene or toluene and XY = bidentates: dipyrido[3,2-a:2′,3′-c]phenazine (dppz) or 2-(9-anthryl)-1H-imidazo[4,5-f][1,10]phenanthroline (aip), which are bound to Ru(II) via two phenanthroline-N atoms in a characteristic “piano-stool” configuration of Ru(II)-arene complexes—as confirmed by vibrational and NMR spectra. In addition, cytotoxic studies were performed for similar half-sandwich organometallic [Ru(η6-p-cymene)(Me2dppz)Cl]PF6 complex (Me2dppz = 11,12-dimethyl-dipyrido[3,2-a:2′,3′-c]phenazine). This study is complemented with elaborate modeling with density functional theory (DFT) calculations, which provided insight into reactive sites of Ru(II) structures, further detailed by molecular docking on the B-DNA dodecamer, which identified binding sites and affinities: most pronounced for the [Ru(η6-benzene)(aip)Cl](PF6) in both A-T and G-C regions of the DNA minor groove. Cytotoxic activity was probed versus tumor cell lines B16, C6, and U251 (B16 mouse melanoma, C6 rat glioma, U251 human glioblastoma) and non-tumor cell line HACAT (HACAT normal human keratinocytes).
PB  - Taylor & Francis
T2  - Journal of Coordination Chemistry
T1  - Half-sandwich ruthenium(II)-arene complexes: synthesis, spectroscopic studies, biological properties, and molecular modeling
VL  - 72
IS  - 1
SP  - 148
EP  - 163
DO  - 10.1080/00958972.2018.1553298
ER  - 

@article{
author = "Nikolić, Stefan and Grgurić-Šipka, Sanja and Đorđević, Ivana and Dahmani, Rahma and Dekanski, Dragana and Vidičević, Sašenka and Tošić, Jelena and Mitić, Dragana and Grubišić, Sonja",
year = "2019",
abstract = "In search for antitumor metal-based drugs that would mitigate the severe side-effects of cisplatin, Ru(II) complexes are gaining increasing recent interest. In this work, we report on the synthesis, characterization (1H- and 13C-NMR, FT-IR), and cytotoxicity studies of two new half-sandwich organometallic Ru(II) complexes of the general formula [Ru(η6-arene)(XY)Cl](PF6) where arene = benzene or toluene and XY = bidentates: dipyrido[3,2-a:2′,3′-c]phenazine (dppz) or 2-(9-anthryl)-1H-imidazo[4,5-f][1,10]phenanthroline (aip), which are bound to Ru(II) via two phenanthroline-N atoms in a characteristic “piano-stool” configuration of Ru(II)-arene complexes—as confirmed by vibrational and NMR spectra. In addition, cytotoxic studies were performed for similar half-sandwich organometallic [Ru(η6-p-cymene)(Me2dppz)Cl]PF6 complex (Me2dppz = 11,12-dimethyl-dipyrido[3,2-a:2′,3′-c]phenazine). This study is complemented with elaborate modeling with density functional theory (DFT) calculations, which provided insight into reactive sites of Ru(II) structures, further detailed by molecular docking on the B-DNA dodecamer, which identified binding sites and affinities: most pronounced for the [Ru(η6-benzene)(aip)Cl](PF6) in both A-T and G-C regions of the DNA minor groove. Cytotoxic activity was probed versus tumor cell lines B16, C6, and U251 (B16 mouse melanoma, C6 rat glioma, U251 human glioblastoma) and non-tumor cell line HACAT (HACAT normal human keratinocytes).",
publisher = "Taylor & Francis",
journal = "Journal of Coordination Chemistry",
title = "Half-sandwich ruthenium(II)-arene complexes: synthesis, spectroscopic studies, biological properties, and molecular modeling",
volume = "72",
number = "1",
pages = "148-163",
doi = "10.1080/00958972.2018.1553298"
}

Nikolić, S., Grgurić-Šipka, S., Đorđević, I., Dahmani, R., Dekanski, D., Vidičević, S., Tošić, J., Mitić, D.,& Grubišić, S.. (2019). Half-sandwich ruthenium(II)-arene complexes: synthesis, spectroscopic studies, biological properties, and molecular modeling. in Journal of Coordination Chemistry
Taylor & Francis., 72(1), 148-163.
https://doi.org/10.1080/00958972.2018.1553298

Nikolić S, Grgurić-Šipka S, Đorđević I, Dahmani R, Dekanski D, Vidičević S, Tošić J, Mitić D, Grubišić S. Half-sandwich ruthenium(II)-arene complexes: synthesis, spectroscopic studies, biological properties, and molecular modeling. in Journal of Coordination Chemistry. 2019;72(1):148-163.
doi:10.1080/00958972.2018.1553298 .

Nikolić, Stefan, Grgurić-Šipka, Sanja, Đorđević, Ivana, Dahmani, Rahma, Dekanski, Dragana, Vidičević, Sašenka, Tošić, Jelena, Mitić, Dragana, Grubišić, Sonja, "Half-sandwich ruthenium(II)-arene complexes: synthesis, spectroscopic studies, biological properties, and molecular modeling" in Journal of Coordination Chemistry, 72, no. 1 (2019):148-163,
https://doi.org/10.1080/00958972.2018.1553298 . .

TY  - JOUR
AU  - Nikolić, Stefan
AU  - Grgurić-Šipka, Sanja
AU  - Đorđević, Ivana
AU  - Dahmani, Rahma
AU  - Dekanski, Dragana
AU  - Vidičević, Sašenka
AU  - Tošić, Jelena
AU  - Mitić, Dragana
AU  - Grubišić, Sonja
PY  - 2019
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3260
AB  - In search for antitumor metal-based drugs that would mitigate the severe side-effects of cisplatin, Ru(II) complexes are gaining increasing recent interest. In this work, we report on the synthesis, characterization (1H- and 13C-NMR, FT-IR), and cytotoxicity studies of two new half-sandwich organometallic Ru(II) complexes of the general formula [Ru(η6-arene)(XY)Cl](PF6) where arene = benzene or toluene and XY = bidentates: dipyrido[3,2-a:2′,3′-c]phenazine (dppz) or 2-(9-anthryl)-1H-imidazo[4,5-f][1,10]phenanthroline (aip), which are bound to Ru(II) via two phenanthroline-N atoms in a characteristic “piano-stool” configuration of Ru(II)-arene complexes—as confirmed by vibrational and NMR spectra. In addition, cytotoxic studies were performed for similar half-sandwich organometallic [Ru(η6-p-cymene)(Me2dppz)Cl]PF6 complex (Me2dppz = 11,12-dimethyl-dipyrido[3,2-a:2′,3′-c]phenazine). This study is complemented with elaborate modeling with density functional theory (DFT) calculations, which provided insight into reactive sites of Ru(II) structures, further detailed by molecular docking on the B-DNA dodecamer, which identified binding sites and affinities: most pronounced for the [Ru(η6-benzene)(aip)Cl](PF6) in both A-T and G-C regions of the DNA minor groove. Cytotoxic activity was probed versus tumor cell lines B16, C6, and U251 (B16 mouse melanoma, C6 rat glioma, U251 human glioblastoma) and non-tumor cell line HACAT (HACAT normal human keratinocytes).
PB  - Taylor & Francis
T2  - Journal of Coordination Chemistry
T1  - Half-sandwich ruthenium(II)-arene complexes: synthesis, spectroscopic studies, biological properties, and molecular modeling
VL  - 72
IS  - 1
SP  - 148
EP  - 163
DO  - 10.1080/00958972.2018.1553298
ER  - 

@article{
author = "Nikolić, Stefan and Grgurić-Šipka, Sanja and Đorđević, Ivana and Dahmani, Rahma and Dekanski, Dragana and Vidičević, Sašenka and Tošić, Jelena and Mitić, Dragana and Grubišić, Sonja",
year = "2019",
abstract = "In search for antitumor metal-based drugs that would mitigate the severe side-effects of cisplatin, Ru(II) complexes are gaining increasing recent interest. In this work, we report on the synthesis, characterization (1H- and 13C-NMR, FT-IR), and cytotoxicity studies of two new half-sandwich organometallic Ru(II) complexes of the general formula [Ru(η6-arene)(XY)Cl](PF6) where arene = benzene or toluene and XY = bidentates: dipyrido[3,2-a:2′,3′-c]phenazine (dppz) or 2-(9-anthryl)-1H-imidazo[4,5-f][1,10]phenanthroline (aip), which are bound to Ru(II) via two phenanthroline-N atoms in a characteristic “piano-stool” configuration of Ru(II)-arene complexes—as confirmed by vibrational and NMR spectra. In addition, cytotoxic studies were performed for similar half-sandwich organometallic [Ru(η6-p-cymene)(Me2dppz)Cl]PF6 complex (Me2dppz = 11,12-dimethyl-dipyrido[3,2-a:2′,3′-c]phenazine). This study is complemented with elaborate modeling with density functional theory (DFT) calculations, which provided insight into reactive sites of Ru(II) structures, further detailed by molecular docking on the B-DNA dodecamer, which identified binding sites and affinities: most pronounced for the [Ru(η6-benzene)(aip)Cl](PF6) in both A-T and G-C regions of the DNA minor groove. Cytotoxic activity was probed versus tumor cell lines B16, C6, and U251 (B16 mouse melanoma, C6 rat glioma, U251 human glioblastoma) and non-tumor cell line HACAT (HACAT normal human keratinocytes).",
publisher = "Taylor & Francis",
journal = "Journal of Coordination Chemistry",
title = "Half-sandwich ruthenium(II)-arene complexes: synthesis, spectroscopic studies, biological properties, and molecular modeling",
volume = "72",
number = "1",
pages = "148-163",
doi = "10.1080/00958972.2018.1553298"
}

Nikolić, S., Grgurić-Šipka, S., Đorđević, I., Dahmani, R., Dekanski, D., Vidičević, S., Tošić, J., Mitić, D.,& Grubišić, S.. (2019). Half-sandwich ruthenium(II)-arene complexes: synthesis, spectroscopic studies, biological properties, and molecular modeling. in Journal of Coordination Chemistry
Taylor & Francis., 72(1), 148-163.
https://doi.org/10.1080/00958972.2018.1553298

Nikolić S, Grgurić-Šipka S, Đorđević I, Dahmani R, Dekanski D, Vidičević S, Tošić J, Mitić D, Grubišić S. Half-sandwich ruthenium(II)-arene complexes: synthesis, spectroscopic studies, biological properties, and molecular modeling. in Journal of Coordination Chemistry. 2019;72(1):148-163.
doi:10.1080/00958972.2018.1553298 .

Nikolić, Stefan, Grgurić-Šipka, Sanja, Đorđević, Ivana, Dahmani, Rahma, Dekanski, Dragana, Vidičević, Sašenka, Tošić, Jelena, Mitić, Dragana, Grubišić, Sonja, "Half-sandwich ruthenium(II)-arene complexes: synthesis, spectroscopic studies, biological properties, and molecular modeling" in Journal of Coordination Chemistry, 72, no. 1 (2019):148-163,
https://doi.org/10.1080/00958972.2018.1553298 . .

TY  - JOUR
AU  - Ljubijankić, N.
AU  - Stanković, M.
AU  - Tešević, Vele
AU  - Grgurić-Šipka, Sanja
AU  - Jadranin, Milka
AU  - Begić, Sabina
AU  - Šabanović, E.
PY  - 2018
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2407
AB  - This study evaluates the genotoxic potential of two Ru(III) complexes with thiosemicarbazone based ligands. The complexes were tested for in vitro protective effect on chromosome aberrations in peripheral human lymphocytes using the cytokinesis block micronucleus (CBMN) assay at concentrations 1.5; 3.7 and 7.4 μg/mL. The cell culture treated with the tested complexes, at 3.7 μg/mL concentration, decreased a frequency of micronucleus for 37% and 32%, when compared with the control cell cultures. At concentration of 7.4 (1.5) μg/mL of this complexes exhibited slightly lower effect of micronucleus for 30% (35%) and 27% (29%), when compared with the control cell cultures.
PB  - Rasayan Journal of Chemistry, c/o Dr. Pratima Sharma
T2  - Rasayan Journal of Chemistry
T1  - Cytokinesis block micronucleus assay in human lymphocytes after exposure to Ru(III) thiosemicarbazone complexes in vitro
VL  - 11
IS  - 2
SP  - 647
EP  - 652
DO  - 10.31788/RJC.2018.1123004
ER  - 

@article{
author = "Ljubijankić, N. and Stanković, M. and Tešević, Vele and Grgurić-Šipka, Sanja and Jadranin, Milka and Begić, Sabina and Šabanović, E.",
year = "2018",
abstract = "This study evaluates the genotoxic potential of two Ru(III) complexes with thiosemicarbazone based ligands. The complexes were tested for in vitro protective effect on chromosome aberrations in peripheral human lymphocytes using the cytokinesis block micronucleus (CBMN) assay at concentrations 1.5; 3.7 and 7.4 μg/mL. The cell culture treated with the tested complexes, at 3.7 μg/mL concentration, decreased a frequency of micronucleus for 37% and 32%, when compared with the control cell cultures. At concentration of 7.4 (1.5) μg/mL of this complexes exhibited slightly lower effect of micronucleus for 30% (35%) and 27% (29%), when compared with the control cell cultures.",
publisher = "Rasayan Journal of Chemistry, c/o Dr. Pratima Sharma",
journal = "Rasayan Journal of Chemistry",
title = "Cytokinesis block micronucleus assay in human lymphocytes after exposure to Ru(III) thiosemicarbazone complexes in vitro",
volume = "11",
number = "2",
pages = "647-652",
doi = "10.31788/RJC.2018.1123004"
}

Ljubijankić, N., Stanković, M., Tešević, V., Grgurić-Šipka, S., Jadranin, M., Begić, S.,& Šabanović, E.. (2018). Cytokinesis block micronucleus assay in human lymphocytes after exposure to Ru(III) thiosemicarbazone complexes in vitro. in Rasayan Journal of Chemistry
Rasayan Journal of Chemistry, c/o Dr. Pratima Sharma., 11(2), 647-652.
https://doi.org/10.31788/RJC.2018.1123004

Ljubijankić N, Stanković M, Tešević V, Grgurić-Šipka S, Jadranin M, Begić S, Šabanović E. Cytokinesis block micronucleus assay in human lymphocytes after exposure to Ru(III) thiosemicarbazone complexes in vitro. in Rasayan Journal of Chemistry. 2018;11(2):647-652.
doi:10.31788/RJC.2018.1123004 .

Ljubijankić, N., Stanković, M., Tešević, Vele, Grgurić-Šipka, Sanja, Jadranin, Milka, Begić, Sabina, Šabanović, E., "Cytokinesis block micronucleus assay in human lymphocytes after exposure to Ru(III) thiosemicarbazone complexes in vitro" in Rasayan Journal of Chemistry, 11, no. 2 (2018):647-652,
https://doi.org/10.31788/RJC.2018.1123004 . .

TY  - JOUR
AU  - Nikolić, Stefan
AU  - Opsenica, Dejan
AU  - Filipović, Vuk
AU  - Dojčinović, Biljana
AU  - Arandelovic, Sandra
AU  - Radulovic, Singa
AU  - Grgurić-Šipka, Sanja
PY  - 2015
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1618
AB  - Two p-cymenerutheniumchlorido complexes with thiourea derivative of 7-chloroquinoline (C1) and pyridine-3-imidazole (C2) were synthesized starting from [(eta(6)-p-cymene)RuCl2](2) and corresponding ligands. The structures of complexes were determined with elemental analysis and IR, ESIMS, H-1 and C-13{H-1} NMR, and 2D H-1-N-15 correlation NMR spectroscopy. Cytotoxic activities examined by the MTT assay were performed in five human neoplastic cell lines (HeLa, K562, A549, MDA-MB-231, EA.hy926) and one nontumor human fetal lung fibroblast cell line (MRC-5). Tested complexes exhibited low micromolar activities with IC50 in the range 11.03-56.45 mu M, while ligands L1 and L2 were significantly less active. Complex C1 showed cytoselective activity toward the K562 cell line (IC50 = 11.03 +/- 1.39 mu M) and was 3 times less active against the nontumor MRC-5 cell line. Flow cytometry analysis indicated that complexes C1 and C2 after 24 h treatment caused a concentration-dependent increase of the apoptotic sub-G1 fraction (up to 18.4%), comparable to cis-diamminedichloridoplatinum(II) (cisplatin, CDDP), although without other substantial alterations of the cell cycle. A drug-accumulation and DNA-binding study performed by ICP-MS in the K562 cell line revealed that complex C1 had a high intracellular uptake (1.38 mu g Ru/10 (6) cells), which significantly exceeded the intracellular uptake levels of CDDP (0.29 mu g Pt/10 (6) cells) and C2 (0.08 mu g Ru/10 (6) cells). However, both ruthenium complexes C1 and C2 bind to cellular DNA less efficiently in comparison to CDDP. The structure-activity relationship clearly suggested that introduction of a 7-chloroquinoline moiety in the ruthenium(II)-p-cymene complex significantly contributed to the intracellular uptake of C1 and higher cytotoxicity and cytoselectivity.
PB  - American Chemical Society (ACS)
T2  - Organometallics
T1  - Strong in Vitro Cytotoxic Potential of New Ruthenium-Cymene Complexes
VL  - 34
IS  - 14
SP  - 3464
EP  - 3473
DO  - 10.1021/acs.organomet.5b00041
ER  - 

@article{
author = "Nikolić, Stefan and Opsenica, Dejan and Filipović, Vuk and Dojčinović, Biljana and Arandelovic, Sandra and Radulovic, Singa and Grgurić-Šipka, Sanja",
year = "2015",
abstract = "Two p-cymenerutheniumchlorido complexes with thiourea derivative of 7-chloroquinoline (C1) and pyridine-3-imidazole (C2) were synthesized starting from [(eta(6)-p-cymene)RuCl2](2) and corresponding ligands. The structures of complexes were determined with elemental analysis and IR, ESIMS, H-1 and C-13{H-1} NMR, and 2D H-1-N-15 correlation NMR spectroscopy. Cytotoxic activities examined by the MTT assay were performed in five human neoplastic cell lines (HeLa, K562, A549, MDA-MB-231, EA.hy926) and one nontumor human fetal lung fibroblast cell line (MRC-5). Tested complexes exhibited low micromolar activities with IC50 in the range 11.03-56.45 mu M, while ligands L1 and L2 were significantly less active. Complex C1 showed cytoselective activity toward the K562 cell line (IC50 = 11.03 +/- 1.39 mu M) and was 3 times less active against the nontumor MRC-5 cell line. Flow cytometry analysis indicated that complexes C1 and C2 after 24 h treatment caused a concentration-dependent increase of the apoptotic sub-G1 fraction (up to 18.4%), comparable to cis-diamminedichloridoplatinum(II) (cisplatin, CDDP), although without other substantial alterations of the cell cycle. A drug-accumulation and DNA-binding study performed by ICP-MS in the K562 cell line revealed that complex C1 had a high intracellular uptake (1.38 mu g Ru/10 (6) cells), which significantly exceeded the intracellular uptake levels of CDDP (0.29 mu g Pt/10 (6) cells) and C2 (0.08 mu g Ru/10 (6) cells). However, both ruthenium complexes C1 and C2 bind to cellular DNA less efficiently in comparison to CDDP. The structure-activity relationship clearly suggested that introduction of a 7-chloroquinoline moiety in the ruthenium(II)-p-cymene complex significantly contributed to the intracellular uptake of C1 and higher cytotoxicity and cytoselectivity.",
publisher = "American Chemical Society (ACS)",
journal = "Organometallics",
title = "Strong in Vitro Cytotoxic Potential of New Ruthenium-Cymene Complexes",
volume = "34",
number = "14",
pages = "3464-3473",
doi = "10.1021/acs.organomet.5b00041"
}

Nikolić, S., Opsenica, D., Filipović, V., Dojčinović, B., Arandelovic, S., Radulovic, S.,& Grgurić-Šipka, S.. (2015). Strong in Vitro Cytotoxic Potential of New Ruthenium-Cymene Complexes. in Organometallics
American Chemical Society (ACS)., 34(14), 3464-3473.
https://doi.org/10.1021/acs.organomet.5b00041

Nikolić S, Opsenica D, Filipović V, Dojčinović B, Arandelovic S, Radulovic S, Grgurić-Šipka S. Strong in Vitro Cytotoxic Potential of New Ruthenium-Cymene Complexes. in Organometallics. 2015;34(14):3464-3473.
doi:10.1021/acs.organomet.5b00041 .

Nikolić, Stefan, Opsenica, Dejan, Filipović, Vuk, Dojčinović, Biljana, Arandelovic, Sandra, Radulovic, Singa, Grgurić-Šipka, Sanja, "Strong in Vitro Cytotoxic Potential of New Ruthenium-Cymene Complexes" in Organometallics, 34, no. 14 (2015):3464-3473,
https://doi.org/10.1021/acs.organomet.5b00041 . .

TY  - JOUR
AU  - Zmejkovski, Bojana
AU  - Savic, Aleksandar
AU  - Poljarevic, Jelena
AU  - Pantelić, Nebojša Đ.
AU  - Arandelovic, Sandra
AU  - Radulovic, Sinisa
AU  - Grgurić-Šipka, Sanja
AU  - Kaluđerović, Goran N.
AU  - Sabo, Tibor
PY  - 2014
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1442
AB  - Six palladium(II) complexes with (S,S)-R(2)edda-type esters ((S,S)-R2edda-type; (S,S)-eddch = (S,S)-ethylenediamine-N,N'-di-2-(3-cyclohexyl)propanoate, R = Me, Et, n-Pr, 1-3; (S,S)-pddch = (S,S)-propylenediamine-N,N'-di-2-(3-cyclohexyl)propanoate, R = Et, n-Pr, 4, 5; and (S,S)-eddip = (S,S)-ethylenediamne-N,N'-di-2-propanoate, R = i-Am, 6) were synthesized, characterized by IR, NMR spectroscopy, ESI-MS and elemental analysis. DFT calculations indicate that in case of 1-4, the most stable isomers are with (S,S)- and (R,S)-configuration of nitrogen atoms, but for complex 6 (R,R)- and (R,S)-N,N'-configured isomers. Furthermore, complex 5 was obtained as (S,S)-N,N' configured isomer. Cytotoxicity study was performed against human cervical adenocarcinoma (HeLa), human alveolar basal adenocarcinoma (A549) and non-cancerous human fetal lung fibroblast (MRC-5) cell lines using colorimetric MTT assay. From the investigated palladium(II) complexes 2, 3 and 5 exhibited highest cytotoxic potential against HeLa (IC50: 28.5 +/- 3.9, 29.5 +/- 1.3 and 34.3 +/- 3.2, respectively).
PB  - Oxford : Pergamon-Elsevier Science Ltd
T2  - Polyhedron
T1  - Synthesis, characterization and in vitro antitumor activity of new palladium(II) complexes with (S,S)-R(2)edda-type esters
VL  - 80
SP  - 106
EP  - 111
DO  - 10.1016/j.poly.2014.02.026
ER  - 

@article{
author = "Zmejkovski, Bojana and Savic, Aleksandar and Poljarevic, Jelena and Pantelić, Nebojša Đ. and Arandelovic, Sandra and Radulovic, Sinisa and Grgurić-Šipka, Sanja and Kaluđerović, Goran N. and Sabo, Tibor",
year = "2014",
abstract = "Six palladium(II) complexes with (S,S)-R(2)edda-type esters ((S,S)-R2edda-type; (S,S)-eddch = (S,S)-ethylenediamine-N,N'-di-2-(3-cyclohexyl)propanoate, R = Me, Et, n-Pr, 1-3; (S,S)-pddch = (S,S)-propylenediamine-N,N'-di-2-(3-cyclohexyl)propanoate, R = Et, n-Pr, 4, 5; and (S,S)-eddip = (S,S)-ethylenediamne-N,N'-di-2-propanoate, R = i-Am, 6) were synthesized, characterized by IR, NMR spectroscopy, ESI-MS and elemental analysis. DFT calculations indicate that in case of 1-4, the most stable isomers are with (S,S)- and (R,S)-configuration of nitrogen atoms, but for complex 6 (R,R)- and (R,S)-N,N'-configured isomers. Furthermore, complex 5 was obtained as (S,S)-N,N' configured isomer. Cytotoxicity study was performed against human cervical adenocarcinoma (HeLa), human alveolar basal adenocarcinoma (A549) and non-cancerous human fetal lung fibroblast (MRC-5) cell lines using colorimetric MTT assay. From the investigated palladium(II) complexes 2, 3 and 5 exhibited highest cytotoxic potential against HeLa (IC50: 28.5 +/- 3.9, 29.5 +/- 1.3 and 34.3 +/- 3.2, respectively).",
publisher = "Oxford : Pergamon-Elsevier Science Ltd",
journal = "Polyhedron",
title = "Synthesis, characterization and in vitro antitumor activity of new palladium(II) complexes with (S,S)-R(2)edda-type esters",
volume = "80",
pages = "106-111",
doi = "10.1016/j.poly.2014.02.026"
}

Zmejkovski, B., Savic, A., Poljarevic, J., Pantelić, N. Đ., Arandelovic, S., Radulovic, S., Grgurić-Šipka, S., Kaluđerović, G. N.,& Sabo, T.. (2014). Synthesis, characterization and in vitro antitumor activity of new palladium(II) complexes with (S,S)-R(2)edda-type esters. in Polyhedron
Oxford : Pergamon-Elsevier Science Ltd., 80, 106-111.
https://doi.org/10.1016/j.poly.2014.02.026

Zmejkovski B, Savic A, Poljarevic J, Pantelić NĐ, Arandelovic S, Radulovic S, Grgurić-Šipka S, Kaluđerović GN, Sabo T. Synthesis, characterization and in vitro antitumor activity of new palladium(II) complexes with (S,S)-R(2)edda-type esters. in Polyhedron. 2014;80:106-111.
doi:10.1016/j.poly.2014.02.026 .

Zmejkovski, Bojana, Savic, Aleksandar, Poljarevic, Jelena, Pantelić, Nebojša Đ., Arandelovic, Sandra, Radulovic, Sinisa, Grgurić-Šipka, Sanja, Kaluđerović, Goran N., Sabo, Tibor, "Synthesis, characterization and in vitro antitumor activity of new palladium(II) complexes with (S,S)-R(2)edda-type esters" in Polyhedron, 80 (2014):106-111,
https://doi.org/10.1016/j.poly.2014.02.026 . .

TY  - JOUR
AU  - Savic, Aleksandar
AU  - Filipovic, Lana
AU  - Arandelovic, Sandra
AU  - Dojčinović, Biljana
AU  - Radulovic, Sinisa
AU  - Sabo, Tibor
AU  - Grgurić-Šipka, Sanja
PY  - 2014
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1593
AB  - Novel Pt(II) complexes of general formula [PtI2(L1-3)], (C1-C3): where L1-3 are isobutyl, n-pentyl and isopentyl esters of (S,S)-1,3-propanediamine-N,N'-di-2-(3-cyclohexyl)propanoic acid has been synthesized and characterized by elemental analysis, UV/Vis, IR, (H-1, C-13 and HSQC, Pt) NMR spectroscopy and ESI mass spectrometry. Spectroscopic data and computational studies have shown the usual square planar coordination geometry of synthesized complexes, with coordination of ligands via nitrogen donor atoms. The cytotoxic activity of novel ligands and corresponding complexes were investigated on a palette of different cells line. Complexes C1-C3 exhibited activity comparable to cisplatin, with IC50 values (04) ranging from 4.6 +/- 0.6 to 17.2 +/- 2, and showed the highest potential in HeLa, LS-174 and EA.hy.926 cells. Ligands L1-L3 exhibited two- to four-times less activity than corresponding complexes. Analysis of the mode of action in HeLa cells, by ICP-MS study, showed markedly higher intracellular accumulation and DNA binding affinity of C1-C3 versus cisplatin, after 4 h and 20 h post-treatment. Annexin-V-FITC assay, flow cytometry and fluorescence microscopy study demonstrated occurrence of cell death through both apoptotic and necrotic changes. Tested complexes, at corresponding IC50 concentrations, caused considerable "sub-G1" peak, without other substantial alterations of cell cycle, while only Cl induced higher level of phosphatidylserine externalization (11.7%), comparing to ligand L1 (4.9%) and cisplatin (8.4%). Structure-activity comparison indicated variations of C1-C3 cytotoxicity, related to the drug/ligand lipophilicity (C log P value), while intracellular platinum content and DNA platination increased on increase of length and branching of ester chain, in sequence: Cl (isobutyl)  LT  C2 (n-pentyl)  LT  C3 (isopentyl).
PB  - Elsevier France-Editions Scientifiques Medicales Elsevier, Paris
T2  - European Journal of Medicinal Chemistry
T1  - Synthesis, characterization and cytotoxic activity of novel platinum(II) iodido complexes
VL  - 82
SP  - 372
EP  - 384
DO  - 10.1016/j.ejmech.2014.05.060
ER  - 

@article{
author = "Savic, Aleksandar and Filipovic, Lana and Arandelovic, Sandra and Dojčinović, Biljana and Radulovic, Sinisa and Sabo, Tibor and Grgurić-Šipka, Sanja",
year = "2014",
abstract = "Novel Pt(II) complexes of general formula [PtI2(L1-3)], (C1-C3): where L1-3 are isobutyl, n-pentyl and isopentyl esters of (S,S)-1,3-propanediamine-N,N'-di-2-(3-cyclohexyl)propanoic acid has been synthesized and characterized by elemental analysis, UV/Vis, IR, (H-1, C-13 and HSQC, Pt) NMR spectroscopy and ESI mass spectrometry. Spectroscopic data and computational studies have shown the usual square planar coordination geometry of synthesized complexes, with coordination of ligands via nitrogen donor atoms. The cytotoxic activity of novel ligands and corresponding complexes were investigated on a palette of different cells line. Complexes C1-C3 exhibited activity comparable to cisplatin, with IC50 values (04) ranging from 4.6 +/- 0.6 to 17.2 +/- 2, and showed the highest potential in HeLa, LS-174 and EA.hy.926 cells. Ligands L1-L3 exhibited two- to four-times less activity than corresponding complexes. Analysis of the mode of action in HeLa cells, by ICP-MS study, showed markedly higher intracellular accumulation and DNA binding affinity of C1-C3 versus cisplatin, after 4 h and 20 h post-treatment. Annexin-V-FITC assay, flow cytometry and fluorescence microscopy study demonstrated occurrence of cell death through both apoptotic and necrotic changes. Tested complexes, at corresponding IC50 concentrations, caused considerable "sub-G1" peak, without other substantial alterations of cell cycle, while only Cl induced higher level of phosphatidylserine externalization (11.7%), comparing to ligand L1 (4.9%) and cisplatin (8.4%). Structure-activity comparison indicated variations of C1-C3 cytotoxicity, related to the drug/ligand lipophilicity (C log P value), while intracellular platinum content and DNA platination increased on increase of length and branching of ester chain, in sequence: Cl (isobutyl)  LT  C2 (n-pentyl)  LT  C3 (isopentyl).",
publisher = "Elsevier France-Editions Scientifiques Medicales Elsevier, Paris",
journal = "European Journal of Medicinal Chemistry",
title = "Synthesis, characterization and cytotoxic activity of novel platinum(II) iodido complexes",
volume = "82",
pages = "372-384",
doi = "10.1016/j.ejmech.2014.05.060"
}

Savic, A., Filipovic, L., Arandelovic, S., Dojčinović, B., Radulovic, S., Sabo, T.,& Grgurić-Šipka, S.. (2014). Synthesis, characterization and cytotoxic activity of novel platinum(II) iodido complexes. in European Journal of Medicinal Chemistry
Elsevier France-Editions Scientifiques Medicales Elsevier, Paris., 82, 372-384.
https://doi.org/10.1016/j.ejmech.2014.05.060

Savic A, Filipovic L, Arandelovic S, Dojčinović B, Radulovic S, Sabo T, Grgurić-Šipka S. Synthesis, characterization and cytotoxic activity of novel platinum(II) iodido complexes. in European Journal of Medicinal Chemistry. 2014;82:372-384.
doi:10.1016/j.ejmech.2014.05.060 .

Savic, Aleksandar, Filipovic, Lana, Arandelovic, Sandra, Dojčinović, Biljana, Radulovic, Sinisa, Sabo, Tibor, Grgurić-Šipka, Sanja, "Synthesis, characterization and cytotoxic activity of novel platinum(II) iodido complexes" in European Journal of Medicinal Chemistry, 82 (2014):372-384,
https://doi.org/10.1016/j.ejmech.2014.05.060 . .

TY  - JOUR
AU  - Grgurić-Šipka, Sanja
AU  - Ivanovic, Ivanka
AU  - Rakic, Gordana
AU  - Todorović, Nina
AU  - Gligorijević, Nevenka
AU  - Radulovic, Sinisa
AU  - Arion, Vladimir B.
AU  - Keppler, Bernhard K.
AU  - Tešić, Živoslav
PY  - 2010
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/646
AB  - Ruthenium(II)-arene complexes of general formulae [(eta(6)-p-cymene)Ru(L1-3)Cl-2], where L1-3 is 3-acetylpyridine (1), 4-acetylpyridine (2) and 2-amino-5-chloropyridine (3), Correspondingly, [(eta(6)-p-cymene)Ru(HL4,5)Cl-2], where HL4 and HL5 are respectively isonicotinic acid (4) and nicotinic acid (5) and [(eta(6)-p-cymene)Ru(HL6-9)Cl], where H2L6-9 represent 2,3-pyridinedicarboxylic acid (6), 2,4-pyidinedicarboxylic acid (7), 2,5-pyridinedicarboxylic acid (8) and 2,6-pyridinedicarboxylic acid (9), were prepared by the reaction of (eta(6)-p-cymene)(2)RuCl2](2) (10) with the corresponding ligand in 1:2 molar ratio in isopropanol. The complexes were characterized by elemental analysis, mass spectrometry, IR and NMR spectroscopies. According to these data the molecules adopt the usual "three-leg piano-stool" geometry which is common for this type of complexes. The structures of I and 7 were determined by X-ray crystallography. The complexes revealed low antiproliferative activity in six investigated tumor cell lines (HeLa, B16, FemX, MDA-MB-361, MDA-MB-453 and LS-174). The reaction of 6 with 9-methyladenine was studied by H-1 NMR, H-1, H-1 COSY and H-1, H-1 NOESY spectroscopy.
PB  - Elsevier France-Editions Scientifiques Medicales Elsevier, Issy-Les-Moulineaux
T2  - European Journal of Medicinal Chemistry
T1  - Ruthenium(II)-arene complexes with functionalized pyridines: Synthesis, characterization and cytotoxic activity
VL  - 45
IS  - 3
SP  - 1051
EP  - 1058
DO  - 10.1016/j.ejmech.2009.11.055
ER  - 

@article{
author = "Grgurić-Šipka, Sanja and Ivanovic, Ivanka and Rakic, Gordana and Todorović, Nina and Gligorijević, Nevenka and Radulovic, Sinisa and Arion, Vladimir B. and Keppler, Bernhard K. and Tešić, Živoslav",
year = "2010",
abstract = "Ruthenium(II)-arene complexes of general formulae [(eta(6)-p-cymene)Ru(L1-3)Cl-2], where L1-3 is 3-acetylpyridine (1), 4-acetylpyridine (2) and 2-amino-5-chloropyridine (3), Correspondingly, [(eta(6)-p-cymene)Ru(HL4,5)Cl-2], where HL4 and HL5 are respectively isonicotinic acid (4) and nicotinic acid (5) and [(eta(6)-p-cymene)Ru(HL6-9)Cl], where H2L6-9 represent 2,3-pyridinedicarboxylic acid (6), 2,4-pyidinedicarboxylic acid (7), 2,5-pyridinedicarboxylic acid (8) and 2,6-pyridinedicarboxylic acid (9), were prepared by the reaction of (eta(6)-p-cymene)(2)RuCl2](2) (10) with the corresponding ligand in 1:2 molar ratio in isopropanol. The complexes were characterized by elemental analysis, mass spectrometry, IR and NMR spectroscopies. According to these data the molecules adopt the usual "three-leg piano-stool" geometry which is common for this type of complexes. The structures of I and 7 were determined by X-ray crystallography. The complexes revealed low antiproliferative activity in six investigated tumor cell lines (HeLa, B16, FemX, MDA-MB-361, MDA-MB-453 and LS-174). The reaction of 6 with 9-methyladenine was studied by H-1 NMR, H-1, H-1 COSY and H-1, H-1 NOESY spectroscopy.",
publisher = "Elsevier France-Editions Scientifiques Medicales Elsevier, Issy-Les-Moulineaux",
journal = "European Journal of Medicinal Chemistry",
title = "Ruthenium(II)-arene complexes with functionalized pyridines: Synthesis, characterization and cytotoxic activity",
volume = "45",
number = "3",
pages = "1051-1058",
doi = "10.1016/j.ejmech.2009.11.055"
}

Grgurić-Šipka, S., Ivanovic, I., Rakic, G., Todorović, N., Gligorijević, N., Radulovic, S., Arion, V. B., Keppler, B. K.,& Tešić, Ž.. (2010). Ruthenium(II)-arene complexes with functionalized pyridines: Synthesis, characterization and cytotoxic activity. in European Journal of Medicinal Chemistry
Elsevier France-Editions Scientifiques Medicales Elsevier, Issy-Les-Moulineaux., 45(3), 1051-1058.
https://doi.org/10.1016/j.ejmech.2009.11.055

Grgurić-Šipka S, Ivanovic I, Rakic G, Todorović N, Gligorijević N, Radulovic S, Arion VB, Keppler BK, Tešić Ž. Ruthenium(II)-arene complexes with functionalized pyridines: Synthesis, characterization and cytotoxic activity. in European Journal of Medicinal Chemistry. 2010;45(3):1051-1058.
doi:10.1016/j.ejmech.2009.11.055 .

Grgurić-Šipka, Sanja, Ivanovic, Ivanka, Rakic, Gordana, Todorović, Nina, Gligorijević, Nevenka, Radulovic, Sinisa, Arion, Vladimir B., Keppler, Bernhard K., Tešić, Živoslav, "Ruthenium(II)-arene complexes with functionalized pyridines: Synthesis, characterization and cytotoxic activity" in European Journal of Medicinal Chemistry, 45, no. 3 (2010):1051-1058,
https://doi.org/10.1016/j.ejmech.2009.11.055 . .