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Bordoni S, Tarroni R, Monari M, Cerini S, Battaglia F, Micheletti G, Boga C, Drius G. Ru-Controlled Thymine Tautomerization Frozen by a k 1(O)-, k 2(N,O)-Metallacycle: An Experimental and Theoretical Approach. Molecules 2023; 28:molecules28103983. [PMID: 37241724 DOI: 10.3390/molecules28103983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 05/01/2023] [Accepted: 05/04/2023] [Indexed: 05/28/2023] Open
Abstract
The reaction of mer-(Ru(H)2(CO)(PPh3)3) (1) with one equivalent of thymine acetic acid (THAcH) unexpectedly produces the macrocyclic dimer k1(O), k2(N,O)-(Ru(CO)(PPh3)2THAc)2 (4) and, concomitantly, the doubly coordinated species k1(O), k2(O,O)-(Ru(CO)(PPh3)2THAc) (5). The reaction promptly forms a complicated mixture of Ru-coordinated mononuclear species. With the aim of shedding some light in this context, two plausible reaction paths were proposed by attributing the isolated or spectroscopically intercepted intermediates on the basis of DFT-calculated energetic considerations. The cleavage of the sterically demanding equatorial phosphine in the mer-species releases enough energy to enable self-aggregation, producing the stable, symmetric 14-membered binuclear macrocycle of 4. The k1-acetate iminol (C=N-OH) unit of the mer-tautomer k1(O)-(Ru(CO)(PPh3)2(THAc)) (2) likely exhibits a stronger nucleophilic aptitude than the prevalent N(H)-C(O) amido species, thus accomplishing extra stabilization through concomitant k2(N,O)-thymine heteroleptic side-chelation. Furthermore, both the ESI-Ms and IR simulation spectra validated the related dimeric arrangement in solution, in agreement with the X-ray determination of the structure. The latter showed tautomerization to the iminol form. The 1H NMR spectra in chlorinated solvents of the kinetic mixture showed the simultaneous presence of 4 and the doubly coordinated 5, in rather similar amounts. THAcH added in excess preferentially reacts with 2 or trans-k2(O,O)-(RuH(CO)(PPh3)2THAc) (3) rather than attacking the starting Complex 1, promptly forming the species of 5. The proposed reaction paths were inferred by spectroscopically monitoring the intermediate species, for which the results were strongly dependent on the of conditions the reaction (stoichiometry, solvent polarity, time, and the concentration of the mixture). The selected mechanism proved to be more reliable, due to the final dimeric product stereochemistry.
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Affiliation(s)
- Silvia Bordoni
- Department of Industrial Chemistry 'Toso Montanari', Alma Mater Studiorum, Università di Bologna, Viale del Risorgimento 4, 40136 Bologna, Italy
- Health Sciences and Technologies Interdepartmental Center for Industrial Research (CIRI SDV), University of Bologna, 40126 Bologna, Italy
| | - Riccardo Tarroni
- Department of Industrial Chemistry 'Toso Montanari', Alma Mater Studiorum, Università di Bologna, Viale del Risorgimento 4, 40136 Bologna, Italy
| | - Magda Monari
- Department of Chemistry 'Giacomo Ciamician', Alma Mater Studiorum, Università di Bologna, Via Selmi 2, 40126 Bologna, Italy
| | - Stefano Cerini
- Department of Industrial Chemistry 'Toso Montanari', Alma Mater Studiorum, Università di Bologna, Viale del Risorgimento 4, 40136 Bologna, Italy
| | - Fabio Battaglia
- Department of Industrial Chemistry 'Toso Montanari', Alma Mater Studiorum, Università di Bologna, Viale del Risorgimento 4, 40136 Bologna, Italy
| | - Gabriele Micheletti
- Department of Industrial Chemistry 'Toso Montanari', Alma Mater Studiorum, Università di Bologna, Viale del Risorgimento 4, 40136 Bologna, Italy
| | - Carla Boga
- Department of Industrial Chemistry 'Toso Montanari', Alma Mater Studiorum, Università di Bologna, Viale del Risorgimento 4, 40136 Bologna, Italy
| | - Giacomo Drius
- Department of Industrial Chemistry 'Toso Montanari', Alma Mater Studiorum, Università di Bologna, Viale del Risorgimento 4, 40136 Bologna, Italy
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2
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Pullen S, Hegmans A, Hiller WG, Platzek A, Freisinger E, Lippert B. On the Heterogeneous Nature of Cisplatin-1-Methyluracil Complexes: Coexistence of Different Aggregation Modes and Partial Loss of NH 3 Ligands as Likely Explanation. ChemistryOpen 2021; 10:28-45. [PMID: 33448132 PMCID: PMC7809254 DOI: 10.1002/open.202000317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 12/10/2020] [Indexed: 11/22/2022] Open
Abstract
The conversion of the 1 : 1-complex of Cisplatin with 1-methyluracil (1MeUH), cis-[Pt(NH3 )2 (1MeU-N3)Cl] (1 a) to the aqua species cis-[Pt(NH3 )2 (1MeU-N3)(OH2 )]+ (1 b), achieved by reaction of 1 a with AgNO3 in water, affords a mixture of compounds, the composition of which strongly depends on sample history. The complexity stems from variations in condensation patterns and partial loss of NH3 ligands. In dilute aqueous solution, 1 a, and dinuclear compounds cis-[(NH3 )2 (1MeU-N3)Pt(μ-OH)Pt(1MeU-N3)(NH3 )2 ]+ (3) as well as head-tail cis-[Pt2 (NH3 )4 (μ-1MeU-N3,O4)2 ]2+ (4) represent the major components. In addition, there are numerous other species present in minor quantities, which differ in metal nuclearity, stoichiometry, stereoisomerism, and Pt oxidation state, as revealed by a combination of 1 H NMR and ESI-MS spectroscopy. Their composition appears not to be the consequence of a unique and repeating coordination pattern of the 1MeU ligand in oligomers but rather the coexistence of distinctly different condensation patterns, which include μ-OH, μ-1MeU, and μ-NH2 bridging and combinations thereof. Consequently, the products obtained should, in total, be defined as a heterogeneous mixture rather than a mixture of oligomers of different sizes. In addition, a N2 complex, [Pt(NH3 )(1MeU)(N2 )]+ appears to be formed in gas phase during the ESI-MS experiment. In the presence of Na+ ions, multimers n of 1 a with n=2, 3, 4 are formed that represent analogues of non-metalated uracil quartets found in tetrastranded RNA.
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Affiliation(s)
- Sonja Pullen
- Fakultät Chemie und Chemische Biologie (CCB)Technische Universität DortmundOtto-Hahn-Str. 644221DortmundGermany
| | - Alexander Hegmans
- Fakultät Chemie und Chemische Biologie (CCB)Technische Universität DortmundOtto-Hahn-Str. 644221DortmundGermany
| | - Wolf G. Hiller
- Fakultät Chemie und Chemische Biologie (CCB)Technische Universität DortmundOtto-Hahn-Str. 644221DortmundGermany
| | - André Platzek
- Fakultät Chemie und Chemische Biologie (CCB)Technische Universität DortmundOtto-Hahn-Str. 644221DortmundGermany
| | - Eva Freisinger
- Fakultät Chemie und Chemische Biologie (CCB)Technische Universität DortmundOtto-Hahn-Str. 644221DortmundGermany
- Department of ChemistryUniversity of ZurichWinterthurerstrasse 1908057ZurichSwitzerland
| | - Bernhard Lippert
- Fakultät Chemie und Chemische Biologie (CCB)Technische Universität DortmundOtto-Hahn-Str. 644221DortmundGermany
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3
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Novohradsky V, Vigueras G, Pracharova J, Cutillas N, Janiak C, Kostrhunova H, Brabec V, Ruiz J, Kasparkova J. Molecular superoxide radical photogeneration in cancer cells by dipyridophenazine iridium(iii) complexes. Inorg Chem Front 2019. [DOI: 10.1039/c9qi00811j] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The switch from Type II to Type I photochemical mechanism by new Ir(iii) complexes for improved PDT of cancer under hypoxia is demonstrated.
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Affiliation(s)
| | - Gloria Vigueras
- Departamento de Química Inorgánica
- Universidad de Murcia and Institute for Bio-Health Research of Murcia (IMIB-Arrixaca)
- E-30071 Murcia
- Spain
| | - Jitka Pracharova
- Department of Biophysics
- Centre of the Region Hana for Biotechnological and Agricultural Research
- Palacky University
- 783 71 Olomouc
- Czech Republic
| | - Natalia Cutillas
- Departamento de Química Inorgánica
- Universidad de Murcia and Institute for Bio-Health Research of Murcia (IMIB-Arrixaca)
- E-30071 Murcia
- Spain
| | - Christoph Janiak
- Institut für Anorganische Chemie und Strukturchemie
- Heinrich-Heine-Universität Düsseldorf
- 40225 Düsseldorf
- Germany
| | - Hana Kostrhunova
- Czech Academy of Sciences
- Institute of Biophysics
- CZ-61265 Brno
- Czech Republic
| | - Viktor Brabec
- Czech Academy of Sciences
- Institute of Biophysics
- CZ-61265 Brno
- Czech Republic
| | - Jose Ruiz
- Departamento de Química Inorgánica
- Universidad de Murcia and Institute for Bio-Health Research of Murcia (IMIB-Arrixaca)
- E-30071 Murcia
- Spain
| | - Jana Kasparkova
- Czech Academy of Sciences
- Institute of Biophysics
- CZ-61265 Brno
- Czech Republic
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4
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Lippert B, Sanz Miguel PJ. Comparing Pt II - and Pd II -nucleobase coordination chemistry: Why Pd II not always is a good substitute for Pt II. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2017.06.047] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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5
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Pracharova J, Vigueras G, Novohradsky V, Cutillas N, Janiak C, Kostrhunova H, Kasparkova J, Ruiz J, Brabec V. Exploring the Effect of Polypyridyl Ligands on the Anticancer Activity of Phosphorescent Iridium(III) Complexes: From Proteosynthesis Inhibitors to Photodynamic Therapy Agents. Chemistry 2018; 24:4607-4619. [DOI: 10.1002/chem.201705362] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2017] [Indexed: 11/10/2022]
Affiliation(s)
- Jitka Pracharova
- Department of Biophysics, Centre of the Region Hana for, Biotechnological and Agricultural ResearchPalacky University Slechtitelu 27 783 71 Olomouc Czech Republic
| | - Gloria Vigueras
- Departamento de Química InorgánicaUniversidad de Murcia and Institute for Bio-Health Research of, Murcia (IMIB-Arrixaca) 30071 Murcia Spain
| | - Vojtech Novohradsky
- Institute of BiophysicsCzech Academy of Sciences Kralovopolska 135 61265 Brno Czech Republic
| | - Natalia Cutillas
- Departamento de Química InorgánicaUniversidad de Murcia and Institute for Bio-Health Research of, Murcia (IMIB-Arrixaca) 30071 Murcia Spain
| | - Christoph Janiak
- Institut für Anorganische Chemie und StrukturchemieHeinrich-Heine-Universität Düsseldorf Universitätsstr 1 40225 Düsseldorf Germany
| | - Hana Kostrhunova
- Institute of BiophysicsCzech Academy of Sciences Kralovopolska 135 61265 Brno Czech Republic
| | - Jana Kasparkova
- Institute of BiophysicsCzech Academy of Sciences Kralovopolska 135 61265 Brno Czech Republic
| | - José Ruiz
- Departamento de Química InorgánicaUniversidad de Murcia and Institute for Bio-Health Research of, Murcia (IMIB-Arrixaca) 30071 Murcia Spain
| | - Viktor Brabec
- Institute of BiophysicsCzech Academy of Sciences Kralovopolska 135 61265 Brno Czech Republic
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6
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Correa RS, Freire V, Barbosa MIF, Bezerra DP, Bomfim LM, Moreira DRM, Soares MBP, Ellena J, Batista AA. Ru(ii)–thyminate complexes: new metallodrug candidates against tumor cells. NEW J CHEM 2018. [DOI: 10.1039/c7nj04368f] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, we used thymine (HThy) as a ligand to form two new ruthenium(ii) complexes with formula [Ru(PPh3)2(Thy)(bipy)]PF6 (1) and [Ru(Thy)(bipy)(dppb)]PF6 (2).
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Affiliation(s)
- Rodrigo S. Correa
- Departamento de Química
- Universidade Federal de São Carlos – UFSCar
- Rodovia Washington Luís KM 235
- CP 676
- São Carlos
| | - Vitória Freire
- Departamento de Química
- Universidade Federal de São Carlos – UFSCar
- Rodovia Washington Luís KM 235
- CP 676
- São Carlos
| | | | - Daniel P. Bezerra
- Centro de Pesquisas Gonçalo Moniz
- Fundação Oswaldo Cruz (CPqGM-FIOCRUZ-BA)
- Salvador
- Brazil
| | - Larissa M. Bomfim
- Centro de Pesquisas Gonçalo Moniz
- Fundação Oswaldo Cruz (CPqGM-FIOCRUZ-BA)
- Salvador
- Brazil
| | - Diogo R. M. Moreira
- Centro de Pesquisas Gonçalo Moniz
- Fundação Oswaldo Cruz (CPqGM-FIOCRUZ-BA)
- Salvador
- Brazil
| | - Milena B. P. Soares
- Centro de Pesquisas Gonçalo Moniz
- Fundação Oswaldo Cruz (CPqGM-FIOCRUZ-BA)
- Salvador
- Brazil
- Centro de Biotecnologia e Terapia Celular
| | - Javier Ellena
- Departamento de Física e Informática
- Instituto de Física de São Carlos
- Universidade de São Paulo
- CP 369
- São Carlos
| | - Alzir A. Batista
- Departamento de Química
- Universidade Federal de São Carlos – UFSCar
- Rodovia Washington Luís KM 235
- CP 676
- São Carlos
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7
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Taherpour S, Golubev O, Lönnberg T. On the feasibility of recognition of nucleic acid sequences by metal-ion-carrying oligonucleotides. Inorganica Chim Acta 2016. [DOI: 10.1016/j.ica.2016.01.025] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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8
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Yellol J, Pérez SA, Buceta A, Yellol G, Donaire A, Szumlas P, Bednarski PJ, Makhloufi G, Janiak C, Espinosa A, Ruiz J. Novel C,N-Cyclometalated Benzimidazole Ruthenium(II) and Iridium(III) Complexes as Antitumor and Antiangiogenic Agents: A Structure-Activity Relationship Study. J Med Chem 2015; 58:7310-27. [PMID: 26313136 DOI: 10.1021/acs.jmedchem.5b01194] [Citation(s) in RCA: 110] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A series of novel C,N-cyclometalated benzimidazole ruthenium(II) and iridium(III) complexes of the types [(η(6)-p-cymene)RuCl(κ(2)-N,C-L)] and [(η(5)-C5Me5)IrCl(κ(2)-N,C-L)] (HL = methyl 1-butyl-2-arylbenzimidazolecarboxylate) with varying substituents (H, Me, F, CF3, MeO, NO2, and Ph) in the R4 position of the phenyl ring of 2-phenylbenzimidazole chelating ligand of the ruthenium (3a-g) and iridium complexes (4a-g) have been prepared. The cytotoxic activity of the new ruthenium(II) and iridium(III) compounds has been evaluated in a panel of cell lines (A2780, A2780cisR, A427, 5637, LCLC, SISO, and HT29) in order to investigate structure-activity relationships. Phenyl substitution at the R4 position shows increased potency in both Ru and Ir complexes (3g and 4g, respectively) as compared to their parent compounds (3a and 4a) in all cell lines. In general, ruthenium complexes are more active than the corresponding iridium complexes. The new ruthenium and iridium compounds increased caspase-3 activity in A2780 cells, as shown for 3a,d and 4a,d. Compound 4g is able to increase the production of ROS in A2780 cells. Furthermore, all the new compounds are able to overcome the cisplatin resistance in A2780cisR cells. In addition, some of the metal complexes effectively inhibit angiogenesis in the human umbilical vein endothelial cell line EA.hy926 at 0.5 μM, the ruthenium derivatives 3g (Ph) and 3d (CF3) being the best performers. QC calculations performed on some ruthenium model complexes showed only moderate or slight electron depletion at the phenyl ring of the C,N-cyclometalated ligand and the chlorine atom on increasing the electron withdrawing effect of the R substituent.
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Affiliation(s)
- Jyoti Yellol
- Departamento de Química Inorgánica and Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia and Institute for Bio-Health Research of Murcia IMIB-Arrixaca , E-30071 Murcia, Spain
| | - Sergio A Pérez
- Departamento de Química Inorgánica and Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia and Institute for Bio-Health Research of Murcia IMIB-Arrixaca , E-30071 Murcia, Spain
| | - Alicia Buceta
- Departamento de Química Inorgánica and Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia and Institute for Bio-Health Research of Murcia IMIB-Arrixaca , E-30071 Murcia, Spain
| | - Gorakh Yellol
- Departamento de Química Inorgánica and Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia and Institute for Bio-Health Research of Murcia IMIB-Arrixaca , E-30071 Murcia, Spain
| | - Antonio Donaire
- Departamento de Química Inorgánica and Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia and Institute for Bio-Health Research of Murcia IMIB-Arrixaca , E-30071 Murcia, Spain
| | - Piotr Szumlas
- Pharmaceutical and Medicinal Chemistry, Institut für Pharmazie, EMA-University of Greifswald , D-17487 Greifswald, Germany
| | - Patrick J Bednarski
- Pharmaceutical and Medicinal Chemistry, Institut für Pharmazie, EMA-University of Greifswald , D-17487 Greifswald, Germany
| | - Gamall Makhloufi
- Institut für Anorganische Chemie und Strukturchemie, Heinrich-Heine-Universität Düsseldorf , Universitätsstrasse 1, D-40225 Düsseldorf, Germany
| | - Christoph Janiak
- Institut für Anorganische Chemie und Strukturchemie, Heinrich-Heine-Universität Düsseldorf , Universitätsstrasse 1, D-40225 Düsseldorf, Germany
| | - Arturo Espinosa
- Departamento de Química Orgánica, Universidad de Murcia , E-30071 Murcia, Spain
| | - José Ruiz
- Departamento de Química Inorgánica and Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia and Institute for Bio-Health Research of Murcia IMIB-Arrixaca , E-30071 Murcia, Spain
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9
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Zamora A, Pérez SA, Rodríguez V, Janiak C, Yellol GS, Ruiz J. Dual Antitumor and Antiangiogenic Activity of Organoplatinum(II) Complexes. J Med Chem 2015; 58:1320-36. [DOI: 10.1021/jm501662b] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Ana Zamora
- Departamento
de Química Inorgánica and Regional Campus of International
Excellence “Campus Mare Nostrum“, Universidad de Murcia, and Institute for Bio-Health Research of Murcia (IMIB-Arrixaca), E-30071 Murcia, Spain
| | - Sergio A. Pérez
- Departamento
de Química Inorgánica and Regional Campus of International
Excellence “Campus Mare Nostrum“, Universidad de Murcia, and Institute for Bio-Health Research of Murcia (IMIB-Arrixaca), E-30071 Murcia, Spain
| | - Venancio Rodríguez
- Departamento
de Química Inorgánica and Regional Campus of International
Excellence “Campus Mare Nostrum“, Universidad de Murcia, and Institute for Bio-Health Research of Murcia (IMIB-Arrixaca), E-30071 Murcia, Spain
| | - Christoph Janiak
- Institut
für Anorganische Chemie und Strukturchemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstrasse 1, D-40225 Düsseldorf, Germany
| | - Gorakh S. Yellol
- Departamento
de Química Inorgánica and Regional Campus of International
Excellence “Campus Mare Nostrum“, Universidad de Murcia, and Institute for Bio-Health Research of Murcia (IMIB-Arrixaca), E-30071 Murcia, Spain
| | - José Ruiz
- Departamento
de Química Inorgánica and Regional Campus of International
Excellence “Campus Mare Nostrum“, Universidad de Murcia, and Institute for Bio-Health Research of Murcia (IMIB-Arrixaca), E-30071 Murcia, Spain
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10
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Cutillas N, Martínez A, Yellol GS, Rodríguez V, Zamora A, Pedreño M, Donaire A, Janiak C, Ruiz J. Anticancer C,N-cycloplatinated(II) complexes containing fluorinated phosphine ligands: synthesis, structural characterization, and biological activity. Inorg Chem 2013; 52:13529-35. [PMID: 24229419 DOI: 10.1021/ic401973k] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
A series of potent C,N-cycloplatinated(II) phosphine antitumor complexes containing fluorous substituents in the cyclometalated or the ancillary phosphine ligands [Pt(C-N)(PR3)Cl] or both have been synthesized and characterized. The crystal structure of [Pt(dmba){P(C6H4CF3-p)3}Cl]·2CH2Cl2 (dmba = dimethylaminomethyl)phenyl) has been established by X-ray diffraction. Values of IC50 of the new platinum complexes were calculated toward a panel of human tumor cell lines representative of ovarian (A2780 and A2780cisR) and breast cancers (T47D). Complexes containing P(C6H4CF3-p)3 as ancillary ligand (with a bulky and electronegative CF3 substituent in para position) were the most cytotoxic compounds in all the tested cancer cell lines. In some cases, the IC50 values were 16-fold smaller than that of cisplatin and 11-fold smaller than the non-fluorous analogue [Pt(dmba)(PPh3)Cl]. On the other hand, very low resistance factors (RF) in A2780cisR (cisplatin-resistant ovarian carcinoma) at 48 h were observed (RF ≈ 1) for most of the new compounds. Analysis of cell cycle was done for the three more active compounds in A2780. They arrest cell growth in G0/G1 phase in contrast to cisplatin (S phase) with a high incidence of late-stage apoptosis. They are also good cathepsin B inhibitors (an enzyme implicated in a number of cancer related events).
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Affiliation(s)
- Natalia Cutillas
- Departamento de Química Inorgánica and Regional Campus of International Excellence "Campus Mare Nostrum", Universidad de Murcia and Instituto Murciano de Investigación Biosanitaria (IMIB) , E-30071 Murcia, Spain
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11
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Esteruelas MA, García-Raboso J, Oliván M, Oñate E. N–H and N–C Bond Activation of Pyrimidinic Nucleobases and Nucleosides Promoted by an Osmium Polyhydride. Inorg Chem 2012; 51:5975-84. [DOI: 10.1021/ic300639j] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Miguel A. Esteruelas
- Departamento
de Química Inorgánica-Instituto de Síntesis Química
y Catálisis Homogénea (ISQCH), Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
| | - Jorge García-Raboso
- Departamento
de Química Inorgánica-Instituto de Síntesis Química
y Catálisis Homogénea (ISQCH), Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
| | - Montserrat Oliván
- Departamento
de Química Inorgánica-Instituto de Síntesis Química
y Catálisis Homogénea (ISQCH), Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
| | - Enrique Oñate
- Departamento
de Química Inorgánica-Instituto de Síntesis Química
y Catálisis Homogénea (ISQCH), Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
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12
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Megger DA, Megger N, Müller J. Metal-mediated base pairs in nucleic acids with purine- and pyrimidine-derived nucleosides. Met Ions Life Sci 2012; 10:295-317. [PMID: 22210344 DOI: 10.1007/978-94-007-2172-2_11] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Metal-mediated base pairs are transition metal complexes formed from complementary nucleosides within nucleic acid double helices. Instead of relying on hydrogen bonds, they are stabilized by coordinative bonds. The nucleosides acting as ligands do not necessarily have to be artificial. In fact, several examples are known of naturally occurring nucleobases (e.g., thymine, cytosine) capable of forming stable metal-mediated base pairs that are highly selective towards certain metal ions. This chapter provides a comprehensive overview of metal-mediated base pairs formed from natural nucleosides or from closely related artificial nucleosides that are pyrimidine or purine derivatives. It addresses the different strategies that lead to the development of these base pairs. The article focuses on structural models for metal-mediated base pairs, their experimental characterization within a nucleic acid, and on their possible applications.
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13
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Caballero AB, Maclaren JK, Rodríguez-Diéguez A, Vidal I, Dobado JA, Salas JM, Janiak C. Dinuclear silver(i) complexes for the design of metal–ligand networks based on triazolopyrimidines. Dalton Trans 2011; 40:11845-55. [DOI: 10.1039/c1dt10603a] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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14
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Blank F, Scherer H, Ruiz J, Rodríguez V, Janiak C. Palladium(ii) complexes with pentafluorophenyl ligands: structures, C6F5 fluxionality by 2D-NMR studies and pre-catalysts for the vinyl addition polymerization of norbornene. Dalton Trans 2010; 39:3609-19. [DOI: 10.1039/b925674a] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Ruiz J, Rodríguez V, de Haro C, Espinosa A, Pérez J, Janiak C. New 7-azaindole palladium and platinum complexes: crystal structures and theoretical calculations. In vitro anticancer activity of the platinum compounds. Dalton Trans 2010; 39:3290-301. [DOI: 10.1039/b920854b] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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van der Wijst T, Fonseca Guerra C, Swart M, Bickelhaupt F, Lippert B. Rare Tautomers of 1-Methyluracil and 1-Methylthymine: Tuning Relative Stabilities through Coordination to PtIIComplexes. Chemistry 2009; 15:209-18. [DOI: 10.1002/chem.200801476] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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Ruiz J, Cutillas N, Villa MD, López G, Espinosa A, Bautista D. N1-Coordination in palladium(II) and platinum(II) complexes with 9-methylhypoxanthine: crystal structures and theoretical calculations. Dalton Trans 2009:9637-44. [DOI: 10.1039/b915427b] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Ruiz J, Rodríguez V, Cutillas N, López G, Bautista D. Acetonimine and 4-imino-2-methylpentan-2-amino platinum(II) complexes: synthesis and in vitro antitumor activity. Inorg Chem 2008; 47:10025-36. [PMID: 18844342 DOI: 10.1021/ic8012359] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The reaction of [Pt(dmba)(PPh3)Cl] [where dmba = N,C-chelating 2-(dimethylaminomethyl)phenyl] with aqueous ammonia in acetone in the presence of AgClO4 gives the acetonimine complex [Pt(dmba)(PPh3)(NH=CMe2)]ClO4 (1). The reaction of [Pt(dmba)(DMSO)Cl] with aqueous ammonia in acetone in the presence of AgClO4 gives a mixture of [Pt(dmba)(NH=CMe2)2]ClO4 (2) and [Pt(dmba)(imam)]ClO4 (3a) (where imam = 4-imino-2-methylpentan-2-amino). [Pt(dmba)(DMSO)Cl] reacts with [Ag(NH=CMe2)2]ClO4 in a 1:1 molar ratio to give [Pt(dmba)(DMSO)(NH=CMe2)]ClO4 (4). The reaction of [Pt(dmba)(DMSO)Cl] with 20% aqueous ammonia in acetone at 70 degrees C in the presence of KOH gives [Pt(dmba)(CH2COMe)(NH=CMe2)] (5), whereas the reaction of [Pt(dmba)(DMSO)Cl] with 20% aqueous ammonia in acetone in the absence of KOH gives [Pt(dmba)(imam)]Cl (3b). The reaction of [NBu4]2[Pt2(C6F5)4(mu-Cl)2] with [Ag(NH=CMe2)2]ClO4 in a 1:2 molar ratio produces cis-[Pt(C6F5)2(NH=CMe2)2] (6). The crystal structures of 1 x 2 Me2CO, 2, 3a, 5, and 6 have been determined. Values of IC50 were calculated for the new platinum complexes against a panel of human tumor cell lines representative of ovarian (A2780 and A2780 cisR) and breast cancers (T47D). At 48 h incubation time complexes 1, 4, and 5 show very low resistance factors against an A2780 cell line which has acquired resistance to cisplatin. 1, 4, and 5 were more active than cisplatin in T47D (up to 30-fold in some cases). The DNA adduct formation of 1, 4, and 5 was followed by circular dichroism and electrophoretic mobility.
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Affiliation(s)
- José Ruiz
- Departamento de Quimica Inorganica and S.U.I.C., Edificio S.A.C.E., Universidad de Murcia, E-30071-Murcia, Spain.
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Ruiz J, Lorenzo J, Vicente C, López G, María López-de-Luzuriaga J, Monge M, Avilés FX, Bautista D, Moreno V, Laguna A. New palladium(II) and platinum(II) complexes with 9-aminoacridine: structures, luminiscence, theoretical calculations, and antitumor activity. Inorg Chem 2008; 47:6990-7001. [PMID: 18593114 DOI: 10.1021/ic800589m] [Citation(s) in RCA: 84] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The new complexes [Pd(dmba)( N10-9AA)(PPh 3)]ClO 4 ( 1), [Pt(dmba)( N9-9AA)(PPh 3)]ClO 4 ( 2), [Pd(dmba)( N10-9AA)Cl] ( 3), and [Pd(C 6F 5)( N10-9AA)(PPh 3)Cl] ( 4) (9-AA = 9-aminoacridine; dmba = N,C-chelating 2-(dimethylaminomethyl)phenyl) have been prepared. The crystal structures have been established by X-ray diffraction. In complex 2, an anagostic C-H...Pt interaction is observed. All complexes are luminescent in the solid state at room temperature, showing important differences between the palladium and platinum complexes. Complex 2 shows two structured emission bands at high and low energies in the solid state, and the lifetimes are in agreement with excited states of triplet parentage. Density functional theory and time-dependent density functional theory calculations for complex 2 have been done. Values of IC 50 were also calculated for the new complexes 1- 4 against the tumor cell line HL-60. All of the new complexes were more active than cisplatin (up to 30-fold in some cases). The DNA adduct formation of the new complexes synthesized was followed by circular dichroism and electrophoretic mobility. Atomic force microscopy images of the modifications caused by the complexes on plasmid DNA pB R322 were also obtained.
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Affiliation(s)
- José Ruiz
- Departamento de Quimica Inorganica, Universidad de Murcia, E-30071 Murcia, Spain.
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Ruiz J, Villa MD, Cutillas N, López G, Haro CD, Bautista D, Moreno V, Valencia L. Palladium(II) and Platinum(II) Organometallic Complexes with 4,7-dihydro-5-methyl-7-oxo[1,2,4]triazolo[1,5-a]pyrimidine. Antitumor Activity of the Platinum Compounds. Inorg Chem 2008; 47:4490-505. [DOI: 10.1021/ic701873b] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- José Ruiz
- Departamento de Química Inorgánica,
Universidad de Murcia, E-30071- Murcia, Spain,
- S.U.I.C., Edificio S.A.C.E., Universidad de Murcia,
E-30071-Murcia, Spain,
- Department de Química Inorgànica,
Universitat de Barcelona, Martí i Franquès 1-11, E-08028
Barcelona, Spain, and
- Departamento de Química Inorgánica,
Universidad de Santiago de Compostela, Avda. de las Ciencias s/n,
E-15782 Santiago de Compostela, Spain
| | - María Dolores Villa
- Departamento de Química Inorgánica,
Universidad de Murcia, E-30071- Murcia, Spain,
- S.U.I.C., Edificio S.A.C.E., Universidad de Murcia,
E-30071-Murcia, Spain,
- Department de Química Inorgànica,
Universitat de Barcelona, Martí i Franquès 1-11, E-08028
Barcelona, Spain, and
- Departamento de Química Inorgánica,
Universidad de Santiago de Compostela, Avda. de las Ciencias s/n,
E-15782 Santiago de Compostela, Spain
| | - Natalia Cutillas
- Departamento de Química Inorgánica,
Universidad de Murcia, E-30071- Murcia, Spain,
- S.U.I.C., Edificio S.A.C.E., Universidad de Murcia,
E-30071-Murcia, Spain,
- Department de Química Inorgànica,
Universitat de Barcelona, Martí i Franquès 1-11, E-08028
Barcelona, Spain, and
- Departamento de Química Inorgánica,
Universidad de Santiago de Compostela, Avda. de las Ciencias s/n,
E-15782 Santiago de Compostela, Spain
| | - Gregorio López
- Departamento de Química Inorgánica,
Universidad de Murcia, E-30071- Murcia, Spain,
- S.U.I.C., Edificio S.A.C.E., Universidad de Murcia,
E-30071-Murcia, Spain,
- Department de Química Inorgànica,
Universitat de Barcelona, Martí i Franquès 1-11, E-08028
Barcelona, Spain, and
- Departamento de Química Inorgánica,
Universidad de Santiago de Compostela, Avda. de las Ciencias s/n,
E-15782 Santiago de Compostela, Spain
| | - Concepción de Haro
- Departamento de Química Inorgánica,
Universidad de Murcia, E-30071- Murcia, Spain,
- S.U.I.C., Edificio S.A.C.E., Universidad de Murcia,
E-30071-Murcia, Spain,
- Department de Química Inorgànica,
Universitat de Barcelona, Martí i Franquès 1-11, E-08028
Barcelona, Spain, and
- Departamento de Química Inorgánica,
Universidad de Santiago de Compostela, Avda. de las Ciencias s/n,
E-15782 Santiago de Compostela, Spain
| | - Delia Bautista
- Departamento de Química Inorgánica,
Universidad de Murcia, E-30071- Murcia, Spain,
- S.U.I.C., Edificio S.A.C.E., Universidad de Murcia,
E-30071-Murcia, Spain,
- Department de Química Inorgànica,
Universitat de Barcelona, Martí i Franquès 1-11, E-08028
Barcelona, Spain, and
- Departamento de Química Inorgánica,
Universidad de Santiago de Compostela, Avda. de las Ciencias s/n,
E-15782 Santiago de Compostela, Spain
| | - Virtudes Moreno
- Departamento de Química Inorgánica,
Universidad de Murcia, E-30071- Murcia, Spain,
- S.U.I.C., Edificio S.A.C.E., Universidad de Murcia,
E-30071-Murcia, Spain,
- Department de Química Inorgànica,
Universitat de Barcelona, Martí i Franquès 1-11, E-08028
Barcelona, Spain, and
- Departamento de Química Inorgánica,
Universidad de Santiago de Compostela, Avda. de las Ciencias s/n,
E-15782 Santiago de Compostela, Spain
| | - Laura Valencia
- Departamento de Química Inorgánica,
Universidad de Murcia, E-30071- Murcia, Spain,
- S.U.I.C., Edificio S.A.C.E., Universidad de Murcia,
E-30071-Murcia, Spain,
- Department de Química Inorgànica,
Universitat de Barcelona, Martí i Franquès 1-11, E-08028
Barcelona, Spain, and
- Departamento de Química Inorgánica,
Universidad de Santiago de Compostela, Avda. de las Ciencias s/n,
E-15782 Santiago de Compostela, Spain
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