1
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Gobbo A, Pereira SAP, Biancalana L, Zacchini S, Saraiva MLMFS, Dyson PJ, Marchetti F. Anticancer ruthenium( ii) tris(pyrazolyl)methane complexes with bioactive co-ligands. Dalton Trans 2022; 51:17050-17063. [DOI: 10.1039/d2dt03009h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
New anticancer RuII-tpm complexes are presented, including a synthetic strategy to tether bioactive molecules to the metallic scaffold.
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Affiliation(s)
- Alberto Gobbo
- University of Pisa, Department of Chemistry and Industrial Chemistry, Via G. Moruzzi 13, I-56124 Pisa, Italy
| | - Sarah A. P. Pereira
- LAQV, REQUIMTE, Laboratório de Química Aplicada, Faculdade de Farmácia da Universidade do Porto, Portugal
| | - Lorenzo Biancalana
- University of Pisa, Department of Chemistry and Industrial Chemistry, Via G. Moruzzi 13, I-56124 Pisa, Italy
| | - Stefano Zacchini
- University of Bologna, Department of Industrial Chemistry “Toso Montanari”, Viale Risorgimento 4, I-40136 Bologna, Italy
| | - M. Lúcia M. F. S. Saraiva
- LAQV, REQUIMTE, Laboratório de Química Aplicada, Faculdade de Farmácia da Universidade do Porto, Portugal
| | - Paul J. Dyson
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH 1015, Switzerland
| | - Fabio Marchetti
- University of Pisa, Department of Chemistry and Industrial Chemistry, Via G. Moruzzi 13, I-56124 Pisa, Italy
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2
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Pettinari R, Marchetti F, Tombesi A, Duan F, Zhou L, Messori L, Giacomelli C, Marchetti L, Trincavelli ML, Marzo T, La Mendola D, Balducci G, Alessio E. Ruthenium(II) 1,4,7-trithiacyclononane complexes of curcumin and bisdemethoxycurcumin: Synthesis, characterization, and biological activity. J Inorg Biochem 2021; 218:111387. [PMID: 33721720 DOI: 10.1016/j.jinorgbio.2021.111387] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 01/21/2021] [Accepted: 02/02/2021] [Indexed: 12/29/2022]
Abstract
Two cationic ruthenium(II) 1,4,7-trithiacyclononane ([9]aneS3) complexes of curcumin (curcH) and bisdemethoxycurcumin (bdcurcH), namely [Ru(curc)(dmso-S)([9]aneS3)]Cl (1) and [Ru(bdcurc)(dmso-S)([9]aneS3)]Cl (2) were prepared from the [RuCl2(dmso-S)([9]-aneS3)] precursor and structurally characterized, both in solution and in the solid state by X-ray crystallography. The corresponding PTA complexes [Ru(curc)(PTA)([9]aneS3)]Cl (3) and [Ru(bdcurc)(PTA)([9]aneS3)]Cl (4) have been also synthesized and characterized (PTA = 1,3,5-triaza-7-phosphaadamantane). Bioinorganic studies relying on mass spectrometry were performed on complexes 1-4 to assess their interactions with the model protein lysozyme. Overall, a rather limited reactivity with lysozyme was highlighted accompanied by a modest cytotoxic potency against three representative cancer cell lines. The moderate pharmacological activity is likely connected to the relatively high stability of these complexes.
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Affiliation(s)
- Riccardo Pettinari
- School of Pharmacy, University of Camerino, Via S. Agostino 1, 62032 Camerino, MC, Italy.
| | - Fabio Marchetti
- School of Science and Technology, University of Camerino, Via S. Agostino 1, 62032 Camerino, MC, Italy
| | - Alessia Tombesi
- School of Science and Technology, University of Camerino, Via S. Agostino 1, 62032 Camerino, MC, Italy
| | - Fenghe Duan
- School of Pharmacy, University of Camerino, Via S. Agostino 1, 62032 Camerino, MC, Italy
| | - Liming Zhou
- Henan Provincial Key Laboratory of Surface and Interface Science, Zhengzhou University of Light Industry, Zhengzhou, 450002, PR China
| | - Luigi Messori
- Department of Chemistry, University of Florence, Via della Lastruccia 3-13, Sesto Fiorentino, Florence, Italy
| | - Chiara Giacomelli
- Department of Pharmacy, University of Pisa, Via Bonanno Pisano, 6, 56126, Pisa, Italy
| | - Laura Marchetti
- Department of Pharmacy, University of Pisa, Via Bonanno Pisano, 6, 56126, Pisa, Italy
| | | | - Tiziano Marzo
- Department of Pharmacy, University of Pisa, Via Bonanno Pisano, 6, 56126, Pisa, Italy
| | - Diego La Mendola
- Department of Pharmacy, University of Pisa, Via Bonanno Pisano, 6, 56126, Pisa, Italy
| | - Gabriele Balducci
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, Via L. Giorgieri 1, Trieste, Italy
| | - Enzo Alessio
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, Via L. Giorgieri 1, Trieste, Italy
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3
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Wise DE, Gamble AJ, Arkawazi SW, Walton PH, Galan MC, O'Hagan MP, Hogg KG, Marrison JL, O'Toole PJ, Sparkes HA, Lynam JM, Pringle PG. Cytotoxic ( cis, cis-1,3,5-triaminocyclohexane)ruthenium(II)-diphosphine complexes; evidence for covalent binding and intercalation with DNA. Dalton Trans 2020; 49:15219-15230. [PMID: 33021299 DOI: 10.1039/d0dt02612c] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/21/2024]
Abstract
We report cytotoxic ruthenium(ii) complexes of the general formula [RuCl(cis-tach)(diphosphine)]+ (cis-tach = cis-cis-1,3,5-triaminocyclohexane) that have been characterised by 1H, 13C and 31P{1H} NMR spectroscopy, mass spectrometry, X-ray crystallography and elemental analysis. The kinetics of aquation and stability of the active species have been studied, showing that the chlorido ligand is substituted by water at 298 K with first order rate constants of 10-2-10-3 s-1, ideal for potential clinical use as anti-tumour agents. Strong interactions with biologically relevant duplex and quadruplex DNA models correlate with the activity observed with A549, A2780 and 293T cell lines, and the degree of activity was found to be sensitive to the chelating diphosphine ligand. A label-free ptychographic cell imaging technique recorded cell death processes over 4 days. The Ru(ii) cis-tach diphosphine complexes exhibit anti-proliferative effects, in some cases outperforming cisplatin and other cytotoxic ruthenium complexes.
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Affiliation(s)
- Dan E Wise
- School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK.
| | - Aimee J Gamble
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK.
| | - Sham W Arkawazi
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK.
| | - Paul H Walton
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK.
| | - M Carmen Galan
- School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK.
| | - Michael P O'Hagan
- School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK.
| | - Karen G Hogg
- Imaging and Cytometry Laboratory, Bioscience Technology Facility, Department of Biology, University of York, UK
| | - Joanne L Marrison
- Imaging and Cytometry Laboratory, Bioscience Technology Facility, Department of Biology, University of York, UK
| | - Peter J O'Toole
- Imaging and Cytometry Laboratory, Bioscience Technology Facility, Department of Biology, University of York, UK
| | - Hazel A Sparkes
- School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK.
| | - Jason M Lynam
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK.
| | - Paul G Pringle
- School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK.
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4
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Alberto ME, Mazzone G, Regina C, Russo N, Sicilia E. Theoretical exploration of the photophysical properties of two-component Ru II-porphyrin dyes as promising assemblies for a combined antitumor effect. Dalton Trans 2020; 49:12653-12661. [PMID: 32870211 DOI: 10.1039/d0dt02197k] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Due to the extraordinary success of porphyrins in photodynamic therapy (PDT) and Ru compounds as chemotherapeutics, a series of RuII-porphyrin complexes have recently been synthesized and proposed as promising dual-action therapeutic agents. The results of a careful DFT and TDDFT investigation on four mononuclear pyridyl triphenylporphyrin RuII-arene complexes are herein reported and compared with those obtained for the metal-free derivatives. The investigation aims at shedding light on the modulation of the photophysical properties of the light absorber upon metalation and exploring the hydrolysis process of the RuII-moiety in the presence of the bulky porphyrin unit. Type I and Type II photoreactions were analyzed computing absorption spectra, singlet-triplet energy gaps, spin orbit coupling constants and vertical electron affinity (VEA) along with ionization potentials (VIP) for all the investigated compounds, while the chloride/water exchange reaction kinetics were determined by exploring the first and second aquation reactions of the Ru-moiety. Despite the highly similar photophysical properties displayed by the members of this class of compounds, an analysis of the hydrolysis processes in the dark allows to point out an interesting difference related to the type of pyridylporphyrin isomer and could be a preliminary explanation of the greater phototoxicity experimentally found for 3'-pyridyl substituted compounds.
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Affiliation(s)
- Marta Erminia Alberto
- Department of Chemistry and Chemical Technologies, Università della Calabria, 87036, Arcavacata di Rende, CS, Italy.
| | - Gloria Mazzone
- Department of Chemistry and Chemical Technologies, Università della Calabria, 87036, Arcavacata di Rende, CS, Italy.
| | - Claudia Regina
- Department of Chemistry and Chemical Technologies, Università della Calabria, 87036, Arcavacata di Rende, CS, Italy.
| | - Nino Russo
- Department of Chemistry and Chemical Technologies, Università della Calabria, 87036, Arcavacata di Rende, CS, Italy.
| | - Emilia Sicilia
- Department of Chemistry and Chemical Technologies, Università della Calabria, 87036, Arcavacata di Rende, CS, Italy.
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5
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High-resolution crystal structures of a “half sandwich”-type Ru(II) coordination compound bound to hen egg-white lysozyme and proteinase K. J Biol Inorg Chem 2020; 25:635-645. [DOI: 10.1007/s00775-020-01786-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Accepted: 03/24/2020] [Indexed: 12/29/2022]
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6
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Battistin F, Vidal A, Balducci G, Alessio E. Investigating the reactivity of neutral water-soluble Ru(ii)–PTA carbonyls towards the model imine ligands pyridine and 2,2′-bipyridine. RSC Adv 2020; 10:26717-26727. [PMID: 35515784 PMCID: PMC9055427 DOI: 10.1039/d0ra05898j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Accepted: 07/07/2020] [Indexed: 01/09/2023] Open
Abstract
The reactivity of selected Ru(ii)-PTA carbonyls with potentially labile ligands (i.e. H2O, dmso and/or Cl) towards the model imine ligands pyridine and 2,2′-bipyridine was investigated, yielding several neutral and cationic water-soluble derivatives.
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Affiliation(s)
- Federica Battistin
- Department of Chemical and Pharmaceutical Sciences
- University of Trieste
- 34127 Trieste
- Italy
| | - Alessio Vidal
- Department of Chemical and Pharmaceutical Sciences
- University of Trieste
- 34127 Trieste
- Italy
| | - Gabriele Balducci
- Department of Chemical and Pharmaceutical Sciences
- University of Trieste
- 34127 Trieste
- Italy
| | - Enzo Alessio
- Department of Chemical and Pharmaceutical Sciences
- University of Trieste
- 34127 Trieste
- Italy
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7
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Sian L, Guerriero A, Peruzzini M, Zuccaccia C, Gonsalvi L, Macchioni A. Diffusion NMR Studies on the Self-Aggregation of Ru-Arene CAP Complexes: Evidence for the Formation of H-Bonded Dicationic Species in Acetonitrile. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00703] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Leonardo Sian
- Dipartimento di Chimica, Biologia e Biotecnologie and CIRCC, Università di Perugia, Via Elce di Sotto 8, 06123 Perugia, Italy
| | - Antonella Guerriero
- Consiglio Nazionale delle Ricerche (CNR), Istituto di Chimica dei Composti OrganoMetallici (ICCOM), Via Madonna del Piano 10, 50019 Sesto Fiorentino (Florence), Italy
| | - Maurizio Peruzzini
- Consiglio Nazionale delle Ricerche (CNR), Istituto di Chimica dei Composti OrganoMetallici (ICCOM), Via Madonna del Piano 10, 50019 Sesto Fiorentino (Florence), Italy
- Consiglio Nazionale delle Ricerche (CNR), Dipartimento di Scienze Chimiche e Tecnologia dei Materiali (DSCTM), Via dei Taurini 19, 00185 Rome, Italy
| | - Cristiano Zuccaccia
- Dipartimento di Chimica, Biologia e Biotecnologie and CIRCC, Università di Perugia, Via Elce di Sotto 8, 06123 Perugia, Italy
| | - Luca Gonsalvi
- Consiglio Nazionale delle Ricerche (CNR), Istituto di Chimica dei Composti OrganoMetallici (ICCOM), Via Madonna del Piano 10, 50019 Sesto Fiorentino (Florence), Italy
| | - Alceo Macchioni
- Dipartimento di Chimica, Biologia e Biotecnologie and CIRCC, Università di Perugia, Via Elce di Sotto 8, 06123 Perugia, Italy
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8
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Chemistry and reactivity of ruthenium(II) complexes: DNA/protein binding mode and anticancer activity are related to the complex structure. Coord Chem Rev 2019. [DOI: 10.1016/j.ccr.2019.07.008] [Citation(s) in RCA: 74] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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9
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Ruthenium(II) trithiacyclononane complexes of 7,3′,4′-trihydroxyflavone, chrysin and tectochrysin: Synthesis, characterisation, and cytotoxic evaluation. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2019.01.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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10
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Battistin F, Siegmund D, Balducci G, Alessio E, Metzler-Nolte N. Ru(ii)-Peptide bioconjugates with the cppH linker (cppH = 2-(2'-pyridyl)pyrimidine-4-carboxylic acid): synthesis, structural characterization, and different stereochemical features between organic and aqueous solvents. Dalton Trans 2019; 48:400-414. [PMID: 30285015 DOI: 10.1039/c8dt03575j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Three new Ru(ii) bioconjugates with the C-terminal hexapeptide sequence of neurotensin, RRPYIL, namely trans,cis-RuCl2(CO)2(cppH-RRPYIL-κNp) (7), [Ru([9]aneS3)(cppH-RRPYIL-κNp)(PTA)](Cl)2 (8), and [Ru([9]aneS3)Cl(cppH-RRPYIL-κNp)]Cl (11), where cppH is the asymmetric linker 2-(2'-pyridyl)pyrimidine-4-carboxylic acid, were prepared in pure form and structurally characterized in solution. The cppH linker is capable of forming stereoisomers (i.e. linkage isomers), depending on whether the nitrogen atom ortho (No) or para (Np) to the carboxylate on C4 in the pyrimidine ring binds the metal ion. Thus, one of the aims of this work was to obtain pairs of stereoisomeric conjugates and investigate their biological (anticancer, antibacterial) activity. A thorough NMR characterization clearly indicated that in all cases exclusively Np conjugates were obtained in pure form. In addition, the NMR studies showed that, whereas in DMSO-d6 each conjugate exists as a single species, in D2O two (7) or even three if not four (8 and 11) very similar stable species form (each one corresponding to an individual compound). Similar results were observed for the cppH-RRPYIL ligand alone. Overall, the NMR findings are consistent with the occurrence of a strong intramolecular stacking interaction between the phenol ring of tyrosine and the pyridyl ring of cppH. Such stacking interactions between aromatic rings are expected to be stronger in water. This interaction leads to two stereoisomeric species in the free cppH-RRPYIL ligand and in the bioconjugate 7, and is somehow modulated by the less symmetrical Ru coordination environments in 8 and 11, affording three to four very similar species.
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Affiliation(s)
- Federica Battistin
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, Via Giorgieri 1, 34127 Trieste, Italy.
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11
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Bratsos I, Alessio E. The Pivotal Role of Ru-dmso Compounds in the Discovery of Well-Behaved Precursors. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201800469] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Ioannis Bratsos
- Institute of Nanoscience and Nanotechnology (INN); Department of Physical Chemistry; NCSR “DEMOKRITOS”; Aghia Paraskevi Attikis 153 10 Athens Greece
| | - Enzo Alessio
- Department of Chemical and Pharmaceutical Sciences; University of Trieste; Via L. Giorgieri 1 34127 Trieste Italy
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12
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Battistin F, Balducci G, Milani B, Alessio E. Water-Soluble Ruthenium(II) Carbonyls with 1,3,5-Triaza-7-phosphoadamantane. Inorg Chem 2018; 57:6991-7005. [DOI: 10.1021/acs.inorgchem.8b00698] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Federica Battistin
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, Via L. Giorgieri 1, 34127 Trieste, Italy
| | - Gabriele Balducci
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, Via L. Giorgieri 1, 34127 Trieste, Italy
| | - Barbara Milani
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, Via L. Giorgieri 1, 34127 Trieste, Italy
| | - Enzo Alessio
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, Via L. Giorgieri 1, 34127 Trieste, Italy
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13
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Meier-Menches SM, Gerner C, Berger W, Hartinger CG, Keppler BK. Structure-activity relationships for ruthenium and osmium anticancer agents - towards clinical development. Chem Soc Rev 2018; 47:909-928. [PMID: 29170783 DOI: 10.1039/c7cs00332c] [Citation(s) in RCA: 301] [Impact Index Per Article: 50.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Anticancer metallodrugs based on ruthenium and osmium are among the most investigated and advanced non-platinum metallodrugs. Inorganic drug discovery with these agents has undergone considerable advances over the past two decades and has currently two representatives in active clinical trials. As many ruthenium and osmium metallodrugs are prodrugs, a key question to be addressed is how the molecular reactivity of such metal-based therapeutics dictates the selectivity and the type of interaction with molecular targets. Within this frame, this review introduces the field by the examples of the most advanced ruthenium lead structures. Then, global structure-activity relationships are discussed for ruthenium and osmium metallodrugs with respect to in vitro antiproliferative/cytotoxic activity and in vivo tumor-inhibiting properties, as well as pharmacokinetics. Determining and validating global mechanisms of action and molecular targets are still major current challenges. Moreover, significant efforts must be invested in screening in vivo tumor models that mimic human pathophysiology to increase the predictability for successful preclinical and clinical development of ruthenium and osmium metallodrugs.
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Affiliation(s)
- Samuel M Meier-Menches
- University of Vienna, Department of Analytical Chemistry, Waehringer Str. 38, A-1090 Vienna, Austria.
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14
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Pal M, Nandi U, Mukherjee D. Detailed account on activation mechanisms of ruthenium coordination complexes and their role as antineoplastic agents. Eur J Med Chem 2018; 150:419-445. [DOI: 10.1016/j.ejmech.2018.03.015] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Revised: 03/02/2018] [Accepted: 03/03/2018] [Indexed: 10/17/2022]
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15
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Exploration of selected electronic characteristics of half-sandwich organoruthenium(II) β-diketonate complexes. J Mol Model 2018; 24:98. [DOI: 10.1007/s00894-018-3598-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Accepted: 01/26/2018] [Indexed: 12/11/2022]
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16
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Henriques MC, Faustino MAF, Silva AMS, Felgueiras J, Fardilha M, Braga SS. A ruthenium(II)-trithiacyclononane curcuminate complex: Synthesis, characterization, DNA-interaction, and cytotoxic activity. J COORD CHEM 2017. [DOI: 10.1080/00958972.2017.1336232] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
| | | | - Artur M. S. Silva
- Department of Chemistry, QOPNA Research Unit, University of Aveiro, Aveiro, Portugal
| | - Juliana Felgueiras
- Laboratory of Signal Transduction, Institute for Research in Biomedicine, Medical Sciences Department, University of Aveiro, Aveiro, Portugal
| | - Margarida Fardilha
- Laboratory of Signal Transduction, Institute for Research in Biomedicine, Medical Sciences Department, University of Aveiro, Aveiro, Portugal
| | - Susana Santos Braga
- Department of Chemistry, QOPNA Research Unit, University of Aveiro, Aveiro, Portugal
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17
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Lazarević T, Rilak A, Bugarčić ŽD. Platinum, palladium, gold and ruthenium complexes as anticancer agents: Current clinical uses, cytotoxicity studies and future perspectives. Eur J Med Chem 2017; 142:8-31. [PMID: 28442170 DOI: 10.1016/j.ejmech.2017.04.007] [Citation(s) in RCA: 270] [Impact Index Per Article: 38.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Revised: 03/30/2017] [Accepted: 04/03/2017] [Indexed: 11/18/2022]
Abstract
Metallodrugs offer potential for unique mechanism of drug action based on the choice of the metal, its oxidation state, the types and number of coordinated ligands and the coordination geometry. This review illustrates notable recent progress in the field of medicinal bioinorganic chemistry as many new approaches to the design of innovative metal-based anticancer drugs are emerging. Current research addressing the problems associated with platinum drugs has focused on other metal-based therapeutics that have different modes of action and on prodrug and targeting strategies in an effort to diminish the side-effects of cisplatin chemotherapy. Examples of metal compounds and chelating agents currently in clinical use, clinical trials or preclinical development are highlighted.
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Affiliation(s)
- Tatjana Lazarević
- University of Kragujevac, Faculty of Medicine, S. Marković 69, 34000, Kragujevac, Serbia
| | - Ana Rilak
- University of Kragujevac, Faculty of Science, R. Domanovića 12, P. O. Box 60, 34000 Kragujevac, Serbia.
| | - Živadin D Bugarčić
- University of Kragujevac, Faculty of Science, R. Domanovića 12, P. O. Box 60, 34000 Kragujevac, Serbia.
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18
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Aman F, Hanif M, Kubanik M, Ashraf A, Söhnel T, Jamieson SMF, Siddiqui WA, Hartinger CG. Anti-Inflammatory Oxicams as Multi-donor Ligand Systems: pH- and Solvent-Dependent Coordination Modes of Meloxicam and Piroxicam to Ru and Os. Chemistry 2017; 23:4893-4902. [PMID: 28198061 DOI: 10.1002/chem.201700263] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Indexed: 11/11/2022]
Abstract
The nitrogen- and sulfur-containing 1,2-benzothiazines meloxicam and piroxicam are widely used as nonsteroidal anti-inflammatory drugs. Intrigued by the presence of multiple donor atoms and therefore potentially rich coordination chemistry, we prepared a series of organometallic Ru and Os compounds with meloxicam and piroxicam featuring either as mono- or bidentate ligand systems. The choice of the solvent and the pH value was identified as the critical parameter to achieve selectively mono- or bidentate coordination. The coordination modes were confirmed experimentally by NMR spectroscopy and single crystal X-ray diffraction analysis. Using DFT calculations, it was established that complexes in which meloxicam acts as a bidentate N,O donor are energetically more favorable than coordination as O,O and S,O donor systems. Since meloxicam and piroxicam derivatives have shown anticancer activity in the past, we aimed to compare the complexes with mono- and bidentate ligands on their in vitro anticancer activity. However, stability studies revealed that only the latter complexes were stable in [D6 ]DMSO/D2 O (5:95) and therefore no direct comparisons could be made. The meloxicam complexes 1 and 2 showed moderate cytotoxicity, whereas the piroxicam derivatives 5 and 6 were hardly active against the utilized cell lines.
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Affiliation(s)
- Farhana Aman
- School of Chemical Sciences, University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand.,Department of Chemistry, University of Sargodha, Sargodha, 40100, Pakistan
| | - Muhammad Hanif
- School of Chemical Sciences, University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand
| | - Mario Kubanik
- School of Chemical Sciences, University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand
| | - Adnan Ashraf
- School of Chemical Sciences, University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand.,Department of Chemistry, University of Sargodha, Sargodha, 40100, Pakistan
| | - Tilo Söhnel
- School of Chemical Sciences, University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand
| | - Stephen M F Jamieson
- Auckland Cancer Society Research Centre, University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand
| | | | - Christian G Hartinger
- School of Chemical Sciences, University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand
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Ruthenium(II) piano stool coordination compounds with aminomethylphosphanes: Synthesis, characterisation and preliminary biological study in vitro. J Inorg Biochem 2017; 170:178-187. [PMID: 28259056 DOI: 10.1016/j.jinorgbio.2017.02.017] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Revised: 02/15/2017] [Accepted: 02/17/2017] [Indexed: 11/21/2022]
Abstract
Reaction of {[Ru(η6-p-cymene)Cl]2(μ-Cl)2} (1) with aminomethylphosphane derived from morpholine (P{CH2N(CH2CH2)2O}3 (A), PPh2{CH2N(CH2CH2)2O} (B)) or piperazine (P{CH2N(CH2CH2)2NCH2CH3}3 (C), PPh2{CH2N(CH2CH2)2NCH2CH3} (D)) results in four new piano stool ruthenium(II) coordination compounds: [Ru(η6-p-cymene)Cl2(A)] (2A), [Ru(η6-p-cymene)Cl2(B)] (2B), [Ru(η6-p-cymene)Cl2(C)] (2C) and [Ru(η6-p-cymene)Cl2(D)] (2D). Every complex was fully characterized using spectroscopic methods (1H, 13C{1H}, 31P{1H} NMR and ESI-MS), elemental analysis, X-ray single crystal diffraction and DFT calculations. Preliminary studies of in vitro cytotoxicity on the A549 (human lung adenocarcinoma) and MCF7 (human breast adenocarcinoma) cell lines revealed 2A-2D activity in the same order of magnitude as in the case of cisplatin. Additionally, the study confirmed the ability of 2A-2D to interact with DNA helix and transferrin.
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Synthesis, reactivities and anti-cancer properties of ruthenium(II) complexes with a thiaether macrocyclic ligand. Inorganica Chim Acta 2017. [DOI: 10.1016/j.ica.2016.07.050] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Zábojníková T, Cajzl R, Kljun J, Chval Z, Turel I, Burda JV. Interactions of the "piano-stool" [ruthenium(II)(η(6) -arene)(quinolone)Cl](+) complexes with water; DFT computational study. J Comput Chem 2016; 37:1766-80. [PMID: 27185047 DOI: 10.1002/jcc.24373] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2015] [Revised: 02/23/2016] [Accepted: 02/24/2016] [Indexed: 12/12/2022]
Abstract
Full optimizations of stationary points along the reaction coordinate for the hydration of several quinolone Ru(II) half-sandwich complexes were performed in water environment using the B3PW91/6-31+G(d)/PCM/UAKS method. The role of diffuse functions (especially on oxygen) was found crucial for correct geometries along the reaction coordinate. Single-point (SP) calculations were performed at the B3LYP/6-311++G(2df,2pd)/DPCM/saled-UAKS level. In the first part, two possible reaction mechanisms-associative and dissociative were compared. It was found that the dissociative mechanism of the hydration process is kinetically slightly preferred. Another important conclusion concerns the reaction channels. It was found that substitution of chloride ligand (abbreviated in the text as dechlorination reaction) represents energetically and kinetically the most feasible pathway. In the second part the same hydration reaction was explored for reactivity comparison of the Ru(II)-complexes with several derivatives of nalidixic acid: cinoxacin, ofloxacin, and (thio)nalidixic acid. The hydration process is about four orders of magnitude faster in a basic solution compared to neutral/acidic environment with cinoxacin and nalidixic acid as the most reactive complexes in the former and latter environments, respectively. The explored hydration reaction is in all cases endergonic; nevertheless the endergonicity is substantially lower (by ∼6 kcal/mol) in basic environment. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Tereza Zábojníková
- Department of Chemical Physics and Optics, Faculty of Mathematics and Physics, Charles University, Ke Karlovu 3, Prague 2, 121 16, Czech Republic
| | - Radim Cajzl
- Department of Chemical Physics and Optics, Faculty of Mathematics and Physics, Charles University, Ke Karlovu 3, Prague 2, 121 16, Czech Republic
| | - Jakob Kljun
- Faculty of Chemistry and Chemical Technologyn University of Ljubljana, Večna pot 113, Ljubljana, 1000, Slovenia
| | - Zdeněk Chval
- Department of Laboratory Methods and Information Systems, Faculty of Health and Social Studies, University of South Bohemia, J. Boreckého 27, České Budějovice, 370 11, Czech Republic
| | - Iztok Turel
- Faculty of Chemistry and Chemical Technologyn University of Ljubljana, Večna pot 113, Ljubljana, 1000, Slovenia
| | - Jaroslav V Burda
- Department of Chemical Physics and Optics, Faculty of Mathematics and Physics, Charles University, Ke Karlovu 3, Prague 2, 121 16, Czech Republic
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Tracking antitumor metallodrugs: promising agents with the Ru(II)- and Fe(II)-cyclopentadienyl scaffolds. Future Med Chem 2016; 8:527-44. [PMID: 27096164 DOI: 10.4155/fmc.16.7] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Research on the field of metal complexes for the treatment of cancer diseases has attracted increasing interest due to the urgency in finding more efficient and selective treatments. Owing to their wide structural diversity, organometallic complexes appear as potential alternatives to the design of new anticancer candidates. Herein, we review recent progress in our work toward the development of new drugs based on Ru(II)- and Fe(II)-cyclopentadienyl scaffolds. Their design and chemical properties are reviewed and correlated with their biological effects, in particular the key role that coligands play in the overall behavior of the complex.
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Battistin F, Balducci G, Iengo E, Demitri N, Alessio E. Neutral 1,3,5-Triaza-7-phosphaadamantane-Ruthenium(II) Complexes as Precursors for the Preparation of Highly Water-Soluble Derivatives. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600084] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Federica Battistin
- Department of Chemical and Pharmaceutical Sciences; University of Trieste; Via L. Giorgieri 1 34127 Trieste Italy
| | - Gabriele Balducci
- Department of Chemical and Pharmaceutical Sciences; University of Trieste; Via L. Giorgieri 1 34127 Trieste Italy
| | - Elisabetta Iengo
- Department of Chemical and Pharmaceutical Sciences; University of Trieste; Via L. Giorgieri 1 34127 Trieste Italy
| | - Nicola Demitri
- Elettra - Synchrotron Light Source; S.S. 14 Km 163.5, Area Science Park 34149 Basovizza, Trieste Italy
| | - Enzo Alessio
- Department of Chemical and Pharmaceutical Sciences; University of Trieste; Via L. Giorgieri 1 34127 Trieste Italy
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Battistin F, Scaletti F, Balducci G, Pillozzi S, Arcangeli A, Messori L, Alessio E. Water-soluble Ru(II)- and Ru(III)-halide-PTA complexes (PTA=1,3,5-triaza-7-phosphaadamantane): Chemical and biological properties. J Inorg Biochem 2016; 160:180-8. [PMID: 26920229 DOI: 10.1016/j.jinorgbio.2016.02.009] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2015] [Revised: 01/25/2016] [Accepted: 02/10/2016] [Indexed: 11/19/2022]
Abstract
Four structurally related Ru(II)-halide-PTA complexes, of general formula trans- or cis-[Ru(PTA)4X2] (PTA=1,3,5-triaza-7-phosphaadamantane, X=Cl (1, 2), Br (3, 4), were prepared and characterized. Whereas compounds 1 and 2 are known, the corresponding bromo derivatives 3 and 4 are new. The Ru(III)-PTA compound trans-[RuCl4(PTAH)2]Cl (5, PTAH=PTA protonated at one N atom), structurally similar to the well-known Ru(III) anticancer drug candidates (Na)trans-[RuCl4(ind)2] (NKP-1339, ind=indazole) and (Him)trans-[RuCl4(dmso-S)(im)] (NAMI-A, im=imidazole), was also prepared and similarly investigated. Notably, the presence of PTA confers to all complexes an appreciable solubility in aqueous solutions at physiological pH. The chemical behavior of compounds 1-5 in water and in physiological buffer, their interactions with two model proteins - cytochrome c and ribonuclease A - as well as with a single strand oligonucleotide (5'-CGCGCG-3'), and their in vitro cytotoxicity against a human colon cancer cell line (HCT-116) and a myeloid leukemia (FLG 29.1) were investigated. Upon dissolution in the buffer, sequential halide replacement by water molecules was observed for complexes 1-4, with relatively slow kinetics, whereas the Ru(III) complex 5 is more inert. All tested compounds manifested moderate antiproliferative properties, the cis compounds 2 and 4 being slightly more active than the trans ones (1 and 3). Mass spectrometry experiments evidenced that all complexes exhibit a far higher reactivity towards the reference oligonucleotide than towards model proteins. The chemical and biological profiles of compounds 1-5 are compared to those of established ruthenium drug candidates in clinical development.
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Affiliation(s)
- F Battistin
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, Via L. Giorgieri 1, 34127 Trieste, Italy
| | - F Scaletti
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia 3-13, 50019 Sesto Fiorentino, Florence, Italy
| | - G Balducci
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, Via L. Giorgieri 1, 34127 Trieste, Italy
| | - S Pillozzi
- Department of Experimental and Clinical Medicine, University of Florence, Viale G.B. Morgagni 50, 50134, Florence, Italy
| | - A Arcangeli
- Department of Experimental and Clinical Medicine, University of Florence, Viale G.B. Morgagni 50, 50134, Florence, Italy
| | - L Messori
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia 3-13, 50019 Sesto Fiorentino, Florence, Italy.
| | - E Alessio
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, Via L. Giorgieri 1, 34127 Trieste, Italy.
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Murray BS, Babak MV, Hartinger CG, Dyson PJ. The development of RAPTA compounds for the treatment of tumors. Coord Chem Rev 2016. [DOI: 10.1016/j.ccr.2015.06.014] [Citation(s) in RCA: 266] [Impact Index Per Article: 33.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Tripathy SK, De U, Dehury N, Laha P, Panda MK, Kim HS, Patra S. Cyclometallated iridium complexes inducing paraptotic cell death like natural products: synthesis, structure and mechanistic aspects. Dalton Trans 2016; 45:15122-15136. [DOI: 10.1039/c6dt00929h] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Mononuclear cyclometallated iridium complexes of polypyridyl-phenazine based ligands have been synthesized and characterized which display excellent anticancer activity through paraptosis.
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Affiliation(s)
- Suman Kumar Tripathy
- School of Basic Sciences
- Indian Institute of Technology Bhubaneswar
- Bhubaneswar-751007
- India
| | - Umasankar De
- Division of Toxicology
- School of Pharmacy
- Sungkyunkwan University
- Gyeonggi-do
- Republic of Korea
| | - Niranjan Dehury
- School of Basic Sciences
- Indian Institute of Technology Bhubaneswar
- Bhubaneswar-751007
- India
| | - Paltan Laha
- School of Basic Sciences
- Indian Institute of Technology Bhubaneswar
- Bhubaneswar-751007
- India
| | - Manas Kumar Panda
- National Institute for Interdisciplinary Science and Technology (NIIST)
- Thiruvananthapuram – 695 019
- India
| | - Hyung Sik Kim
- Division of Toxicology
- School of Pharmacy
- Sungkyunkwan University
- Gyeonggi-do
- Republic of Korea
| | - Srikanta Patra
- School of Basic Sciences
- Indian Institute of Technology Bhubaneswar
- Bhubaneswar-751007
- India
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Jiang C, Aiken GR, Hsu-Kim H. Effects of Natural Organic Matter Properties on the Dissolution Kinetics of Zinc Oxide Nanoparticles. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2015; 49:11476-11484. [PMID: 26355264 DOI: 10.1021/acs.est.5b02406] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The dissolution of zinc oxide (ZnO) nanoparticles (NPs) is a key step of controlling their environmental fate, bioavailability, and toxicity. Rates of dissolution often depend upon factors such as interactions of NPs with natural organic matter (NOM). We examined the effects of 16 different NOM isolates on the dissolution kinetics of ZnO NPs in buffered potassium chloride solution using anodic stripping voltammetry to directly measure dissolved zinc concentrations. The observed dissolution rate constants (kobs) and dissolved zinc concentrations at equilibrium increased linearly with NOM concentration (from 0 to 40 mg C L(-1)) for Suwannee River humic and fulvic acids and Pony Lake fulvic acid. When dissolution rates were compared for the 16 NOM isolates, kobs was positively correlated with certain properties of NOM, including specific ultraviolet absorbance (SUVA), aromatic and carbonyl carbon contents, and molecular weight. Dissolution rate constants were negatively correlated to hydrogen/carbon ratio and aliphatic carbon content. The observed correlations indicate that aromatic carbon content is a key factor in determining the rate of NOM-promoted dissolution of ZnO NPs. The findings of this study facilitate a better understanding of the fate of ZnO NPs in organic-rich aquatic environments and highlight SUVA as a facile and useful indicator of NOM interactions with metal-based nanoparticles.
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Affiliation(s)
- Chuanjia Jiang
- Department of Civil and Environmental Engineering, Duke University , Durham, North Carolina 27708, United States
| | - George R Aiken
- U.S. Geological Survey, Boulder, Colorado 80303, United States
| | - Heileen Hsu-Kim
- Department of Civil and Environmental Engineering, Duke University , Durham, North Carolina 27708, United States
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Mari C, Pierroz V, Ferrari S, Gasser G. Combination of Ru(ii) complexes and light: new frontiers in cancer therapy. Chem Sci 2015; 6:2660-2686. [PMID: 29308166 PMCID: PMC5639435 DOI: 10.1039/c4sc03759f] [Citation(s) in RCA: 436] [Impact Index Per Article: 48.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2014] [Accepted: 01/13/2015] [Indexed: 12/22/2022] Open
Abstract
The synergistic action of light, oxygen and a photosensitizer (PS) has found applications for decades in medicine under the name of photodynamic therapy (PDT) for the treatment of skin diseases and, more recently, for the treatment of cancer. However, of the thirteen PSs currently approved for the treatment of cancer over more than 10 countries, only two contain a metal ion. This fact is rather surprising considering that nowadays around 50% of conventional chemotherapies involve the use of cisplatin and other platinum-containing drugs. In this perspective article, we review the opportunities brought by the use of Ru(ii) complexes as PSs in PDT. In addition, we also present the recent achievements in the application of Ru(ii) complexes in photoactivated chemotherapy (PACT). In this strategy, the presence of oxygen is not required to achieve cell toxicity. This is of significance since tumors are generally hypoxic. Importantly, this perspective article focuses particularly on the Ru(ii) complexes for which an in vitro biological evaluation has been performed and the mechanism of action (partially) unveiled.
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Affiliation(s)
- Cristina Mari
- Department of Chemistry , University of Zurich , Winterthurerstrasse 190 , CH-8057 Zurich , Switzerland . ; http://www.gassergroup.com ; ; Tel: +41 44 635 4630
| | - Vanessa Pierroz
- Department of Chemistry , University of Zurich , Winterthurerstrasse 190 , CH-8057 Zurich , Switzerland . ; http://www.gassergroup.com ; ; Tel: +41 44 635 4630
- Institute of Molecular Cancer Research , University of Zurich , Winterthurerstrasse 190 , CH-8057 Zurich , Switzerland
| | - Stefano Ferrari
- Institute of Molecular Cancer Research , University of Zurich , Winterthurerstrasse 190 , CH-8057 Zurich , Switzerland
| | - Gilles Gasser
- Department of Chemistry , University of Zurich , Winterthurerstrasse 190 , CH-8057 Zurich , Switzerland . ; http://www.gassergroup.com ; ; Tel: +41 44 635 4630
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Rilak A, Puchta R, Bugarčić ŽD. Mechanism of the reactions of ruthenium(II) polypyridyl complexes with thiourea, sulfur-containing amino acids and nitrogen-containing heterocycles. Polyhedron 2015. [DOI: 10.1016/j.poly.2015.02.030] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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do Nascimento RR, Lima FCDA, Gonçalves MB, Errico LA, Rentería M, Petrilli HM. Metal coordination study at Ag and Cd sites in crown thioether complexes through DFT calculations and hyperfine parameters. J Mol Model 2015; 21:97. [PMID: 25814377 DOI: 10.1007/s00894-015-2642-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2015] [Accepted: 03/09/2015] [Indexed: 10/23/2022]
Abstract
Structural and electronic properties of [C12H24S6X], [C13H26S6OX], and [C14H28S6OX] (X: Ag(+), Cd(2+)) crown thioether complexes were investigated within the framework of the density functional theory (DFT) using the projector augmented wave (PAW) method. The theoretical results were compared with time-differential perturbed γ-γ angular correlations (TDPAC) experiments reported in the literature using the (111)Ag→(111)Cd probe. In the case of X=Ag(+), a refinement of the structure was performed and the predicted equilibrium structures compared with available X-ray diffraction experimental data. Structural distortions induced by replacing Ag(+) with Cd(2+) were investigated as well as the electric-field gradient (EFG) tensor at the Cd(2+) sites. Our results suggest that the EFG at Cd(2+) sites corresponds to the Ag(+) coordination sphere structure, i.e., before the structural relaxations of the molecule with X=Cd(2+) are completed. The results are discussed in terms of the characteristics of the TDPAC (111)Ag→(111)Cd probe and the time window of the measurement, and provide an interesting tool with which to probe molecular relaxations.
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Affiliation(s)
- Rafael R do Nascimento
- Instituto de Física, Universidade de São Paulo, Rua do Matão Travessa R, Nr.187, Cidade Universitária, CP 66318, 05508-090, São Paulo, Brazil
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Abstract
Ruthenium compounds are highly regarded as potential drug candidates. The compounds offer the potential of reduced toxicity and can be tolerated in vivo. The various oxidation states, different mechanism of action, and the ligand substitution kinetics of ruthenium compounds give them advantages over platinum-based complexes, thereby making them suitable for use in biological applications. Several studies have focused attention on the interaction between active ruthenium complexes and their possible biological targets. In this paper, we review several ruthenium compounds which reportedly possess promising cytotoxic profiles: from the discovery of highly active compounds imidazolium [trans-tetrachloro(dmso)(imidazole)ruthenate(III)] (NAMI-A), indazolium [trans-tetrachlorobis(1H-indazole)ruthenate(III)](KP1019), and sodium trans-[tetrachloridobis(1H-indazole)ruthenate(III)] (NKP-1339) to the recent work based on both inorganic and organometallic ruthenium(II) compounds. Half-sandwich organometallic ruthenium complexes offer the opportunity of derivatization at the arene moiety, while the three remaining coordination sites on the metal centre can be functionalised with various coordination groups of various monoligands. It is clear from the review that these mononuclear ruthenium(II) compounds represent a strongly emerging field of research that will soon culminate into several ruthenium based antitumor agents.
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Babak MV, Meier SM, Huber KVM, Reynisson J, Legin AA, Jakupec MA, Roller A, Stukalov A, Gridling M, Bennett KL, Colinge J, Berger W, Dyson PJ, Superti-Furga G, Keppler BK, Hartinger CG. Target profiling of an antimetastatic RAPTA agent by chemical proteomics: relevance to the mode of action. Chem Sci 2015; 6:2449-2456. [PMID: 29308157 PMCID: PMC5647740 DOI: 10.1039/c4sc03905j] [Citation(s) in RCA: 109] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Accepted: 02/09/2015] [Indexed: 12/24/2022] Open
Abstract
The RAPTA pharmacophore was linked to beads to identify its biomolecular targets in cancer cells.
The clinical development of anticancer metallodrugs is often hindered by the elusive nature of their molecular targets. To identify the molecular targets of an antimetastatic ruthenium organometallic complex based on 1,3,5-triaza-7-phosphaadamantane (RAPTA), we employed a chemical proteomic approach. The approach combines the design of an affinity probe featuring the pharmacophore with mass-spectrometry-based analysis of interacting proteins found in cancer cell lysates. The comparison of data sets obtained for cell lysates from cancer cells before and after treatment with a competitive binder suggests that RAPTA interacts with a number of cancer-related proteins, which may be responsible for the antiangiogenic and antimetastatic activity of RAPTA complexes. Notably, the proteins identified include the cytokines midkine, pleiotrophin and fibroblast growth factor-binding protein 3. We also detected guanine nucleotide-binding protein-like 3 and FAM32A, which is in line with the hypothesis that the antiproliferative activity of RAPTA compounds is due to induction of a G2/M arrest and histone proteins identified earlier as potential targets.
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Affiliation(s)
- Maria V Babak
- School of Chemical Sciences , University of Auckland , Private Bag 92019 , Auckland 1142 , New Zealand . .,Institute of Inorganic Chemistry , University of Vienna , Waehringer Str. 42 , A-1090 Vienna , Austria
| | - Samuel M Meier
- Institute of Analytical Chemistry , University of Vienna , Waehringer Str. 38 , A-1090 Vienna , Austria
| | - Kilian V M Huber
- CeMM Research Center for Molecular Medicine , Lazarettgasse 14, AKH BT 25.3 , A-1090 Vienna , Austria
| | - Jóhannes Reynisson
- School of Chemical Sciences , University of Auckland , Private Bag 92019 , Auckland 1142 , New Zealand .
| | - Anton A Legin
- Institute of Inorganic Chemistry , University of Vienna , Waehringer Str. 42 , A-1090 Vienna , Austria
| | - Michael A Jakupec
- Institute of Inorganic Chemistry , University of Vienna , Waehringer Str. 42 , A-1090 Vienna , Austria
| | - Alexander Roller
- Institute of Inorganic Chemistry , University of Vienna , Waehringer Str. 42 , A-1090 Vienna , Austria
| | - Alexey Stukalov
- CeMM Research Center for Molecular Medicine , Lazarettgasse 14, AKH BT 25.3 , A-1090 Vienna , Austria
| | - Manuela Gridling
- CeMM Research Center for Molecular Medicine , Lazarettgasse 14, AKH BT 25.3 , A-1090 Vienna , Austria
| | - Keiryn L Bennett
- CeMM Research Center for Molecular Medicine , Lazarettgasse 14, AKH BT 25.3 , A-1090 Vienna , Austria
| | - Jacques Colinge
- CeMM Research Center for Molecular Medicine , Lazarettgasse 14, AKH BT 25.3 , A-1090 Vienna , Austria
| | - Walter Berger
- Department of Medicine I , Institute of Cancer Research , Medical University Vienna , Borschkegasse 8a , A-1090 Vienna , Austria
| | - Paul J Dyson
- Institut des Sciences et Ingénierie Chimiques , Ecole Polytechnique Fédérale de Lausanne (EPFL) , CH-1015 Lausanne , Switzerland
| | - Giulio Superti-Furga
- CeMM Research Center for Molecular Medicine , Lazarettgasse 14, AKH BT 25.3 , A-1090 Vienna , Austria
| | - Bernhard K Keppler
- Institute of Inorganic Chemistry , University of Vienna , Waehringer Str. 42 , A-1090 Vienna , Austria
| | - Christian G Hartinger
- School of Chemical Sciences , University of Auckland , Private Bag 92019 , Auckland 1142 , New Zealand .
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Traven K, Sinreih M, Stojan J, Seršen S, Kljun J, Bezenšek J, Stanovnik B, Turel I, Rižner TL. Ruthenium complexes as inhibitors of the aldo-keto reductases AKR1C1-1C3. Chem Biol Interact 2014; 234:349-59. [PMID: 25446855 DOI: 10.1016/j.cbi.2014.11.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2014] [Revised: 10/22/2014] [Accepted: 11/07/2014] [Indexed: 11/16/2022]
Abstract
The human aldo-keto reductases (AKRs) from the 1C subfamily are important targets for the development of new drugs. In this study, we have investigated the possible interactions between the recombinant AKR1C enzymes AKR1C1-AKR1C3 and ruthenium(II) complexes; in particular, we were interested in the potential inhibitory actions. Five novel ruthenium complexes (1a, 1b, 2a, 2b, 2c), two precursor ruthenium compounds (P1, P2), and three ligands (a, b, c) were prepared and included in this study. Two different types of novel ruthenium(II) complexes were synthesized. First, bearing the sulphur macrocycle [9]aneS3, S-bonded dimethylsulphoxide (dmso-S), and an N,N-donor ligand, with the general formula of [Ru([9]aneS3)(dmso)(N,N-ligand)](PF6)2 (1a, 1b), and second, with the general formula of [(η(6)-p-cymene)RuCl(N,N-ligand)]Cl (2a, 2b, 2c). All of these synthesized compounds were characterized by high-resolution NMR spectroscopy, X-ray crystallography (compounds a, b, c, 1a, 1b) and other standard physicochemical methods. To evaluate the potential inhibitory actions of these compounds on the AKR1C enzymes, we followed enzymatically catalyzed oxidation of the substrate 1-acenaphthenol by NAD(+) in the absence and presence of various micromolar concentrations of the individual compounds. Among 10 compounds, one ruthenium complex (2b) and two precursor ruthenium compounds (P1, P2) inhibited all three AKR1C enzymes, and one ruthenium complex (2a) inhibited only AKR1C3. Ligands a, b and c revealed no inhibition of the AKR1C enzymes. All four of the active compounds showed multiple binding with the AKR1C enzymes that was characterized by an initial instantaneous inhibition followed by a slow quasi-irreversible step. To the best of our knowledge, this is the first study that has examined interactions between these AKR1C enzymes and ruthenium(II) complexes.
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Affiliation(s)
- Katja Traven
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Aškerčeva 5, SI-1000 Ljubljana, Slovenia
| | - Maša Sinreih
- Institute of Biochemistry, Faculty of Medicine, University of Ljubljana, Vrazov trg 2, SI-1000 Ljubljana, Slovenia
| | - Jure Stojan
- Institute of Biochemistry, Faculty of Medicine, University of Ljubljana, Vrazov trg 2, SI-1000 Ljubljana, Slovenia
| | - Sara Seršen
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Aškerčeva 5, SI-1000 Ljubljana, Slovenia
| | - Jakob Kljun
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Aškerčeva 5, SI-1000 Ljubljana, Slovenia
| | - Jure Bezenšek
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Aškerčeva 5, SI-1000 Ljubljana, Slovenia
| | - Branko Stanovnik
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Aškerčeva 5, SI-1000 Ljubljana, Slovenia
| | - Iztok Turel
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Aškerčeva 5, SI-1000 Ljubljana, Slovenia.
| | - Tea Lanišnik Rižner
- Institute of Biochemistry, Faculty of Medicine, University of Ljubljana, Vrazov trg 2, SI-1000 Ljubljana, Slovenia.
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36
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Musetti C, Spagnul C, Mion G, Da Ros S, Gianferrara T, Sissi C. DNA Targeting by Cationic Porphyrin–Ruthenium(II) Conjugates. Chempluschem 2014. [DOI: 10.1002/cplu.201402275] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Caterina Musetti
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, v. Marzolo 5, 35131 Padova (Italy)
- present address: Glaxo Smith Kline, 1250 S. Collegeville Road, Collegeville, PA 19426 (USA)
| | - Cinzia Spagnul
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, p.le Europa 1, 34127 Trieste (Italy)
| | - Giuliana Mion
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, p.le Europa 1, 34127 Trieste (Italy)
| | - Sivia Da Ros
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, v. Marzolo 5, 35131 Padova (Italy)
| | - Teresa Gianferrara
- Department of Chemical and Pharmaceutical Sciences, University of Trieste, p.le Europa 1, 34127 Trieste (Italy)
| | - Claudia Sissi
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, v. Marzolo 5, 35131 Padova (Italy)
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Moret S, Dyson PJ, Laurenczy G. Direct synthesis of formic acid from carbon dioxide by hydrogenation in acidic media. Nat Commun 2014; 5:4017. [PMID: 24886955 PMCID: PMC4059918 DOI: 10.1038/ncomms5017] [Citation(s) in RCA: 349] [Impact Index Per Article: 34.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2014] [Accepted: 04/30/2014] [Indexed: 12/25/2022] Open
Abstract
The chemical transformation of carbon dioxide into useful products becomes increasingly important as CO2 levels in the atmosphere continue to rise as a consequence of human activities. In this article we describe the direct hydrogenation of CO2 into formic acid using a homogeneous ruthenium catalyst, in aqueous solution and in dimethyl sulphoxide (DMSO), without any additives. In water, at 40 °C, 0.2 M formic acid can be obtained under 200 bar, however, in DMSO the same catalyst affords 1.9 M formic acid. In both solvents the catalysts can be reused multiple times without a decrease in activity. Worldwide demand for formic acid continues to grow, especially in the context of a renewable energy hydrogen carrier, and its production from CO2 without base, via the direct catalytic carbon dioxide hydrogenation, is considerably more sustainable than the existing routes.
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Affiliation(s)
- Séverine Moret
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Paul J. Dyson
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Gábor Laurenczy
- Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
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38
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Rilak A, Bratsos I, Zangrando E, Kljun J, Turel I, Bugarčić ŽD, Alessio E. New water-soluble ruthenium(II) terpyridine complexes for anticancer activity: synthesis, characterization, activation kinetics, and interaction with guanine derivatives. Inorg Chem 2014; 53:6113-26. [PMID: 24884156 DOI: 10.1021/ic5005215] [Citation(s) in RCA: 72] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
With the aim of assessing whether ruthenium(II) compounds with meridional geometry might be utilized as potential antitumor agents, a series of new, water-soluble, monofunctional ruthenium(II) complexes of the general formula mer-[Ru(L3)(N-N)X][Y]n (where L3 = 2,2':6',2″-terpyridine (tpy) or 4'-chloro-2,2':6',2″-terpyridine (Cl-tpy), N-N = 1,2-diaminoethane (en), 1,2-diaminocyclohexane (dach), or 2,2'-bipyridine (bpy); X = Cl or dmso-S; Y = Cl, PF6, or CF3SO3; n = 1 or 2, depending on the nature of X) were synthesized. All complexes were fully characterized by elemental analysis and spectroscopic techniques (IR, UV/visible, and 1D and 2D NMR), and for three of them, i.e., [Ru(Cl-tpy)(bpy)Cl][Cl] (3Cl), [Ru(Cl-tpy)(en)(dmso-S)][Y]2 [Y = PF6 (6PF6), CF3SO3 (6OTf)] and [Ru(Cl-tpy)(bpy)(dmso-S)][CF3SO3]2 (8OTf), the X-ray structure was also determined. The new terpyridine complexes, with the exception of 8, are well soluble in water (>25 mg/mL). (1)H and (31)P NMR spectroscopy studies performed on the three selected complexes [Ru(Cl-tpy)(N-N)Cl](+) [N-N = en (1), dach (2), and bpy (3)] demonstrated that, after hydrolysis of the Cl ligand, they are capable of interacting with guanine derivatives [i.e., 9-methylguanine (9MeG) or guanosine-5'-monophosphate (5'-GMP)] through N7, forming monofunctional adducts with rates and extents that depend strongly on the nature of N-N: 1 ≈ 2 ≫ 3. In addition, compound 1 shows high selectivity toward 5'-GMP compared to adenosine-5'-monophosphate (5'-AMP), in a competition experiment. Quantitative kinetic investigations on 1 and 2 were performed by means of UV/visible spectroscopy. Overall, the complexes with bidentate aliphatic diamines proved to be superior to those with bpy in terms of solubility and reactivity (i.e., release of Cl(-) and capability to bind guanine derivatives). Contrary to the chlorido compounds, the corresponding dmso derivatives proved to be inert (viz., they do not release the monodentate ligand) in aqueous media.
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Affiliation(s)
- Ana Rilak
- Faculty of Science, University of Kragujevac , R. Domanovića 12, P.O. Box 60, 34000 Kragujevac, Serbia
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Iengo E, Demitri N, Balducci G, Alessio E. An irresolute linker: separation, and structural and spectroscopic characterization of the two linkage isomers of a Ru(ii)-(2-(2′-pyridyl)pyrimidine-4-carboxylic acid) complex. Dalton Trans 2014; 43:12160-3. [DOI: 10.1039/c4dt01282h] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
For the first time the two linkage isomers of a Ru(ii) complex with 2-(2′-pyridyl)pyrimidine-4-carboxylic acid (cppH) have been fully characterized individually, both in solution and in the solid state.
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Affiliation(s)
- E. Iengo
- Dipartimento di Scienze Chimiche e Farmaceutiche
- Università di Trieste
- 34127 Trieste, Italy
| | - N. Demitri
- Elettra – Sincrotrone Trieste
- Trieste, Italy
| | - G. Balducci
- Dipartimento di Scienze Chimiche e Farmaceutiche
- Università di Trieste
- 34127 Trieste, Italy
| | - E. Alessio
- Dipartimento di Scienze Chimiche e Farmaceutiche
- Università di Trieste
- 34127 Trieste, Italy
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40
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García-Fernández A, Díez J, Gamasa MP, Lastra E. 1,3-Dipolar Cycloaddition Reactions of Neutral and Cationic Hydridotris(pyrazolyl)borate-Ruthenium(II) Azido Complexes. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201301298] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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41
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Finazzi I, Bratsos I, Gianferrara T, Bergamo A, Demitri N, Balducci G, Alessio E. Photolabile RuIIHalf-Sandwich Complexes Suitable for Developing “Caged” Compounds: Chemical Investigation and Unexpected Dinuclear Species with Bridging Diamine Ligands. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201300792] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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42
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Kljun J, Bratsos I, Alessio E, Psomas G, Repnik U, Butinar M, Turk B, Turel I. New uses for old drugs: attempts to convert quinolone antibacterials into potential anticancer agents containing ruthenium. Inorg Chem 2013; 52:9039-52. [PMID: 23886077 DOI: 10.1021/ic401220x] [Citation(s) in RCA: 96] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Continuing the study of the physicochemical and biological properties of ruthenium-quinolone adducts, four novel complexes with the general formula [Ru([9]aneS3)(dmso-κS)(quinolonato-κ(2)O,O)](PF6), containing the quinolones levofloxacin (1), nalidixic acid (2), oxolinic acid (3), and cinoxacin (4), were prepared and characterized in solid state as well as in solution. Contrary to their organoruthenium analogues, these complexes are generally relatively stable in aqueous solution as substitution of the dimethylsulfoxide (dmso) ligand is slow and not quantitative, and a minor release of the quinolonato ligand is observed only in the case of 4. The complexes bind to serum proteins displaying relatively high binding constants. DNA binding was studied using UV-vis spectroscopy, cyclic voltammetry, and performing viscosity measurements of CT DNA solutions in the presence of complexes 1-4. These experiments show that the ruthenium complexes interact with DNA via intercalation. Possible electrostatic interactions occur in the case of compound 4, which also shows the most pronounced rate of hydrolysis. Compounds 2 and 4 also exhibit a weak inhibition of cathepsins B and S, which are involved in the progression of a number of diseases, including cancer. Furthermore, complex 2 displayed moderate cytotoxicity when tested on the HeLa cell line.
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Affiliation(s)
- Jakob Kljun
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Aškerčeva 5, SI-1000 Ljubljana, Slovenia
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Silva TFS, Smoleński P, Martins LMDRS, Guedes da Silva MFC, Fernandes AR, Luis D, Silva A, Santos S, Borralho PM, Rodrigues CMP, Pombeiro AJL. Cobalt and Zinc Compounds Bearing 1,10-Phenanthroline-5,6-dione or 1,3,5-Triaza-7-phosphaadamantane Derivatives - Synthesis, Characterization, Cytotoxicity, and Cell Selectivity Studies. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201300197] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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44
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Gamble AJ, Lynam JM, Thatcher RJ, Walton PH, Whitwood AC. cis-1,3,5-Triaminocyclohexane as a facially capping ligand for ruthenium(II). Inorg Chem 2013; 52:4517-27. [PMID: 23517123 DOI: 10.1021/ic302819j] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Reaction of cis-[RuCl2(DMSO-S)3(DMSO-O)] with cis-1,3,5-triaminocyclohexane (tach) results in the formation of [RuCl(tach)(DMSO-S)2]Cl, a valuable precursor for a wide range of other tach-containing Ru complexes. Reaction of [RuCl(tach)(DMSO-S)2]Cl with the chelating nitrogen-based ligands (N-N = bipyridine, phenanthroline, and ethylenediamine) affords [Ru(N-N)(DMSO-S)2(tach)][Cl]2. A similar reaction between [RuCl(tach)(DMSO-S)]Cl with the chelating phosphorus-based ligands (P-P = dppm, dppe, dppp, dppb, dppv, and dppben) leads to the formation of [RuCl(P-P)(tach)]Cl. The structures of 10 examples of the tach-containing complexes have been determined by single crystal X-ray diffraction. An examination of the structural metrics obtained from these studies indicates that the tach ligand is a strong sigma donor. In addition, the presence of the NH2 groups in the tach ligand allow for participation in hydrogen bonding further modulating the coordinative properties of the ligand.
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Affiliation(s)
- Aimee J Gamble
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK
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45
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Martins LMDRS, Alegria ECBA, Smoleński P, Kuznetsov ML, Pombeiro AJL. Oxorhenium complexes bearing the water-soluble tris(pyrazol-1-yl)methanesulfonate, 1,3,5-triaza-7-phosphaadamantane, or related ligands, as catalysts for Baeyer-Villiger oxidation of ketones. Inorg Chem 2013; 52:4534-46. [PMID: 23534942 DOI: 10.1021/ic400024r] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
New rhenium(VII or III) complexes [ReO3(PTA)2][ReO4] (1) (PTA = 1,3,5-triaza-7-phosphaadamantane), [ReO3(mPTA)][ReO4]I (2) (mPTA = N-methyl-1,3,5-triaza-7-phosphaadamantane cation), [ReO3(HMT)2][ReO4] (3) (HMT = hexamethylenetetramine), [ReO3(η(2)-Tpm)(PTA)][ReO4] (4) [Tpm = hydrotris(pyrazol-1-yl)methane, HC(pz)3, pz = pyrazolyl], [ReO3(Hpz)(HMT)][ReO4] (5) (Hpz = pyrazole), [ReO(Tpms)(HMT)] (6) [Tpms = tris(pyrazol-1-yl)methanesulfonate, O3SC(pz)3(-)] and [ReCl2{N2C(O)Ph}(PTA)3] (7) have been prepared from the Re(VII) oxide Re2O7 (1-6) or, in the case of 7, by ligand exchange from the benzoyldiazenido complex [ReCl2{N2C(O)Ph}(Hpz)(PPh3)2], and characterized by IR and NMR spectroscopies, elemental analysis and electrochemical properties. Theoretical calculations at the density functional theory (DFT) level of theory indicated that the coordination of PTA to both Re(III) and Re(VII) centers by the P atom is preferable compared to the coordination by the N atom. This is interpreted in terms of the Re-PTA bond energy and hard-soft acid-base theory. The oxo-rhenium complexes 1-6 act as selective catalysts for the Baeyer-Villiger oxidation of cyclic and linear ketones (e.g., 2-methylcyclohexanone, 2-methylcyclopentanone, cyclohexanone, cyclopentanone, cyclobutanone, and 3,3-dimethyl-2-butanone or pinacolone) to the corresponding lactones or esters, in the presence of aqueous H2O2. The effects of a variety of factors are studied toward the optimization of the process.
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Affiliation(s)
- Luísa M D R S Martins
- Chemical Engeneering Departamental Area, Instituto Superior de Engenharia de Lisboa (ISEL), R. Conselheiro Emídio Navarro, 1959-007 Lisboa, Portugal.
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46
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Madureira J, Santos TM. Solution and solid-state spectroscopic characterization of chloro dimethylsulfoxide polythioether ruthenium(II) complexes, complemented with DFT calculations in the gas phase. J COORD CHEM 2013. [DOI: 10.1080/00958972.2013.770846] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- João Madureira
- a Departamento de Química e CICECO , Universidade de Aveiro , Aveiro , Portugal
- b Department of Chemistry , Virginia Commonwealth University , Richmond , VA , USA
| | - Teresa M. Santos
- a Departamento de Química e CICECO , Universidade de Aveiro , Aveiro , Portugal
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Smoleński P, Kirillova MV, Guedes da Silva MFC, Pombeiro AJL. Isomerisation and controlled condensation in an aqueous medium of allyl alcohol catalysed by new water-soluble rhodium complexes with 1,3,5-triaza-7-phosphaadamantane (PTA). Dalton Trans 2013; 42:10867-74. [DOI: 10.1039/c3dt50992c] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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48
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Ferrer Í, Rich J, Fontrodona X, Rodríguez M, Romero I. Ru(ii) complexes containing dmso and pyrazolyl ligands as catalysts for nitrile hydration in environmentally friendly media. Dalton Trans 2013; 42:13461-9. [DOI: 10.1039/c3dt51580j] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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49
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Ragazzon G, Bratsos I, Alessio E, Salassa L, Habtemariam A, McQuitty RJ, Clarkson GJ, Sadler PJ. Design of photoactivatable metallodrugs: Selective and rapid light-induced ligand dissociation from half-sandwich [Ru([9]aneS3)(N–N′)(py)]2+ complexes. Inorganica Chim Acta 2012. [DOI: 10.1016/j.ica.2012.06.031] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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50
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Rilak A, Bratsos I, Zangrando E, Kljun J, Turel I, Bugarčić ŽD, Alessio E. Factors that influence the antiproliferative activity of half sandwich Ru(II)-[9]aneS3 coordination compounds: activation kinetics and interaction with guanine derivatives. Dalton Trans 2012; 41:11608-18. [PMID: 22903512 DOI: 10.1039/c2dt31225e] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Half sandwich Ru(II)-[9]aneS3 complexes ([9]aneS3 = 1,4,7-trithiacyclononane) are being studied for their antiproliferative activity. We investigated here the activation kinetics of three such complexes, namely [Ru([9]aneS3)(en)Cl](PF(6)) (1), [Ru([9]aneS3)(bpy)Cl](PF(6)) (2) and [Ru([9]aneS3)(pic)Cl] (3) (en = 1,2-diaminoethane, pic = picolinate), and their interaction with DNA model bases. The aim of the study was to assess how they are affected by the nature and charge of the chelating ligand. The model reactions of 1-3 with the guanine derivatives 9-methylguanine (9MeG), guanosine (Guo), and guanosine 5'-monophosphate (5'-GMP) were studied by NMR spectroscopy. All reactions lead, although with different rates and to different extents, to the formation of monofunctional adducts with the guanine derivatives N7-bonded to the Ru center. Two products, the complexes [Ru([9]aneS3)(en)(9MeG-N7)](PF(6))(2) (4) and [Ru([9]aneS3)(pic)(9MeG-N7)](PF(6)) (10), were structurally characterized also by X-ray crystallography. The structure of 4 is stabilized by strong intramolecular H-bonding between an NH of en and the carbonyl O6 of 9MeG. The kinetics of aquation and anation of complexes 2 and 3, as well as the kinetics and the mechanism of the reaction of complexes 1-3 with the biologically more relevant 5'-GMP ligand were studied by UV-Vis spectroscopy. The rate of the reaction of 1-3 with 5'-GMP depends on the nature of the chelating ligand rather than on the charge of the complex, decreasing in the order 3≈2 > 1. The measured enthalpies and entropies of activation (ΔH(≠) > 0, ΔS(≠) < 0) support an associative mechanism for the substitution process.
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Affiliation(s)
- Ana Rilak
- Faculty of Science, University of Kragujevac, R. Domanovića 12, P. O. Box 60, 34000 Kragujevac, Serbia
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