1
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Höfer D, Cseh K, Hejl M, Roller A, Jakupec MA, Galanski MS, Keppler BK. Synthesis, characterization, cytotoxic activity, and 19F NMR spectroscopic investigations of (OC-6-33)-diacetato(ethane-1,2-diamine)bis(3,3,3-trifluoropropanoato)platinum(IV) and its platinum(II) counterpart. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2019.02.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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2
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Deo KM, Sakoff J, Gilbert J, Zhang Y, Aldrich Wright JR. Synthesis, characterisation and potent cytotoxicity of unconventional platinum(iv) complexes with modified lipophilicity. Dalton Trans 2019; 48:17217-17227. [DOI: 10.1039/c9dt03339d] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Platinum(iv) complexes with facile modulation of lipophilicity exhibited nanomolar activity against tested lines. The most potent complexes exhibited 850-fold greater activity than cisplatin against HT29 colon carcinoma with GI50 values of 13 nM.
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Affiliation(s)
- Krishant M. Deo
- Nanoscale Organisation and Dynamics Group
- Western Sydney University
- Campbelltown
- Australia
| | | | | | - Yingjie Zhang
- Australian Nuclear Science and Technology Organisation
- Australia
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3
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Xiao H, Yan L, Dempsey EM, Song W, Qi R, Li W, Huang Y, Jing X, Zhou D, Ding J, Chen X. Recent progress in polymer-based platinum drug delivery systems. Prog Polym Sci 2018. [DOI: 10.1016/j.progpolymsci.2018.07.004] [Citation(s) in RCA: 105] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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4
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Liang S, Han L, Mu W, Jiang D, Hou T, Yin X, Pang X, Yang R, Liu Y, Zhang N. Carboplatin-loaded SMNDs to reduce GSH-mediated platinum resistance for prostate cancer therapy. J Mater Chem B 2018; 6:7004-7014. [DOI: 10.1039/c8tb01721b] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Glutathione (GSH)-mediated drug resistance can strongly weaken the therapeutic efficiency of platinum(ii).
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5
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Sommerfeld NS, Hejl M, Klose MHM, Schreiber-Brynzak E, Bileck A, Meier SM, Gerner C, Jakupec MA, Galanski M, Keppler BK. Low-Generation Polyamidoamine Dendrimers as Drug Carriers for Platinum(IV) Complexes. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201601205] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Nadine S. Sommerfeld
- Institute of Inorganic Chemistry; University of Vienna; Waehringer Strasse 42 1090 Vienna Austria
| | - Michaela Hejl
- Institute of Inorganic Chemistry; University of Vienna; Waehringer Strasse 42 1090 Vienna Austria
| | - Matthias H. M. Klose
- Institute of Inorganic Chemistry; University of Vienna; Waehringer Strasse 42 1090 Vienna Austria
- Research Platform “Translational Cancer Therapy Research”; University of Vienna; Waehringer Strasse 42 1090 Vienna Austria
| | | | - Andrea Bileck
- Institute of Analytical Chemistry; University of Vienna; Waehringer Strasse 38 1090 Vienna Austria
| | - Samuel M. Meier
- Institute of Analytical Chemistry; University of Vienna; Waehringer Strasse 38 1090 Vienna Austria
| | - Christopher Gerner
- Institute of Analytical Chemistry; University of Vienna; Waehringer Strasse 38 1090 Vienna Austria
| | - Michael A. Jakupec
- Institute of Inorganic Chemistry; University of Vienna; Waehringer Strasse 42 1090 Vienna Austria
- Research Platform “Translational Cancer Therapy Research”; University of Vienna; Waehringer Strasse 42 1090 Vienna Austria
| | - Markus Galanski
- Institute of Inorganic Chemistry; University of Vienna; Waehringer Strasse 42 1090 Vienna Austria
| | - Bernhard K. Keppler
- Institute of Inorganic Chemistry; University of Vienna; Waehringer Strasse 42 1090 Vienna Austria
- Research Platform “Translational Cancer Therapy Research”; University of Vienna; Waehringer Strasse 42 1090 Vienna Austria
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6
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Escolà A, Crespo M, López C, Quirante J, Jayaraman A, Polat IH, Badía J, Baldomà L, Cascante M. On the stability and biological behavior of cyclometallated Pt(IV) complexes with halido and aryl ligands in the axial positions. Bioorg Med Chem 2016; 24:5804-5815. [PMID: 27670096 DOI: 10.1016/j.bmc.2016.09.037] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Revised: 09/13/2016] [Accepted: 09/14/2016] [Indexed: 12/22/2022]
Abstract
A series of cyclometallated platinum(IV) compounds (3a, 3a' and 3b') with a meridional [C,N,N'] terdentate ligand, featuring an halido and an aryl group in the axial positions has been evaluated for electrochemical reduction and preliminary biological behavior against a panel of human adenocarcinoma (A-549 lung, HCT-116 colon, and MCF-7 breast) cell lines and the normal bronquial epithelial BEAS-2B cells. Cathodic reduction potentials (shifting from -1.463 to -1.570V) reveal that the platinum(IV) compounds under study would be highly reluctant to be reduced in a biological environment. Actually ascorbic acid was not able to reduce complex 3a', the most prone to be reduced according its reduction potential, over a period of one week. These results suggest an intrinsic activity for the investigated platinum(IV) complexes (3a, 3a' and 3b'), which exhibit a remarkable cytotoxicity effectiveness (with IC50 values in the low micromolar range), even greater than that of cisplatin. The IC50 for A-549 lung cells and clog P values were found to follow the same trend: 3b'>3a'>3a. However, no correlation was observed between reduction potential and in vitro activity. As a representative example, cyclometallated platinum(IV) compound 3a', exercise its antiproliferative activity directly over non-microcytic A-549 lung cancer cells through a mixture of cell cycle arrest (13% arrest at G1 phase and 46% arrest at G2 phase) and apoptosis induction (increase of early apoptosis by 30 times with regard to control). To gain further insights into the mode of action of the investigated platinum(IV) complexes, drug uptake, cathepsin B inhibition and ROS generation were also evaluated. Interestingly an increased ROS generation could be related with the antiproliferative activity of the cyclometallated platinum(IV) series under study in the cisplatin-resistant A-549 lung and HCT-116 cancer cell lines.
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Affiliation(s)
- Anna Escolà
- Departament de Química Inorgànica i Orgànica, Secció de Química Inorgànica, Facultat de Química, Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Spain
| | - Margarita Crespo
- Departament de Química Inorgànica i Orgànica, Secció de Química Inorgànica, Facultat de Química, Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Spain; Institut de Biomedicina (IBUB), Universitat de Barcelona, Spain.
| | - Concepción López
- Departament de Química Inorgànica i Orgànica, Secció de Química Inorgànica, Facultat de Química, Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Spain
| | - Josefina Quirante
- Institut de Biomedicina (IBUB), Universitat de Barcelona, Spain; Laboratori de Química Orgànica, Facultat de Farmàcia, Universitat de Barcelona, Av. Joan XXIII, 27-31, 08028 Barcelona, Spain.
| | - Anusha Jayaraman
- Department of Biochemistry and Molecular Biology, Faculty of Biology and IDIBAPS, Unit Associated with CSIC, Diagonal 643, 08028 Barcelona, Spain
| | - Ibrahim H Polat
- Department of Biochemistry and Molecular Biology, Faculty of Biology and IDIBAPS, Unit Associated with CSIC, Diagonal 643, 08028 Barcelona, Spain
| | - Josefa Badía
- Institut de Biomedicina (IBUB), Universitat de Barcelona, Spain; Departament de Bioquímica i Fisiologia, Secció de Bioquímica i Biologia Molecular, Facultat de Farmàcia, Av. Joan XXIII, 27-31, 08028 Barcelona, Spain
| | - Laura Baldomà
- Institut de Biomedicina (IBUB), Universitat de Barcelona, Spain; Departament de Bioquímica i Fisiologia, Secció de Bioquímica i Biologia Molecular, Facultat de Farmàcia, Av. Joan XXIII, 27-31, 08028 Barcelona, Spain
| | - Marta Cascante
- Institut de Biomedicina (IBUB), Universitat de Barcelona, Spain; Department of Biochemistry and Molecular Biology, Faculty of Biology and IDIBAPS, Unit Associated with CSIC, Diagonal 643, 08028 Barcelona, Spain
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7
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Hoffmeister BR, Hejl M, Adib-Razavi MS, Jakupec MA, Galanski M, Keppler BK. Bis- and Tetrakis(carboxylato)platinum(IV) complexes with mixed axial ligands - synthesis, characterization, and cytotoxicity. Chem Biodivers 2016; 12:559-74. [PMID: 25879501 DOI: 10.1002/cbdv.201400291] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2014] [Indexed: 11/06/2022]
Abstract
A series of twelve novel diamminetetrakis(carboxylato)platinum(IV) and 18 novel bis(carboxylato)dichlorido(ethane-1,2-diamine)platinum(IV) complexes with mixed axial carboxylato ligands was synthesized and characterized by multinuclear (1) H-, (13) C-, (15) N-, and (195) Pt-NMR spectroscopy. Their cytotoxic potential was evaluated (by MTT assay) against three human cancer cell lines derived from ovarian teratocarcinoma (CH1/PA-1), lung (A549), and colon carcinoma (SW480). In the cisplatin-sensitive CH1/PA-1 cancer cell line, diamminetetrakis(carboxylato)platinum(IV) complexes showed IC50 values in the low micromolar range, whereas, for the most lipophilic compounds of the bis(carboxylato)dichlorido(ethane-1,2-diamine)platinum(IV) series, IC50 values in the nanomolar range were found.
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Affiliation(s)
- Björn R Hoffmeister
- Institute of Inorganic Chemistry, University of Vienna, Waehringer Strasse 42, AT-1090 Vienna (phone: +43-1-427752600; fax: +43-1-427752680)
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8
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Pichler V, Göschl S, Schreiber-Brynzak E, Jakupec MA, Galanski M, Keppler BK. Influence of reducing agents on the cytotoxic activity of platinum(IV) complexes: induction of G2/M arrest, apoptosis and oxidative stress in A2780 and cisplatin resistant A2780cis cell lines. Metallomics 2016; 7:1078-90. [PMID: 26073554 DOI: 10.1039/c5mt00116a] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The concept of Pt(IV) prodrug design is one advanced strategy to increase the selectivity for cancer cells and to reduce systemic toxicity in comparison to established platinum-based chemotherapy. Pt(IV) complexes are thought to be activated by reduction via physiological reductants, such as ascorbic acid or glutathione. Nevertheless, only few investigations on the link between the reduction rate, which is influenced by the reductant, and the ligand sphere of the Pt(IV) metal centre have been performed so far. Herein, we investigated a set of Pt(IV) compounds with varying rates of reduction with respect to their cytotoxicity and drug accumulation in A2780 and A2780cis ovarian cancer cell lines, their influence on the cell cycle, efficiency of triggering apoptosis, and ability to interfere with plasmid DNA (pUC19). The effects caused by Pt(IV) compounds were compared without or with extracellularly added ascorbic acid and glutathione (or its precursor N-acetylcysteine) to gain understanding of the impact of increased levels of the reductant on the activity of such complexes. Our results demonstrate that reduction is required prior to plasmid interaction. Furthermore, the rate of reduction is crucial for the efficiency of this set of Pt(IV) compounds. The substances that are reduced least likely showed similar performances, whereas the fastest reducing substance was negatively affected by an increased extracellular level of reducing agents, with reduced cytotoxicity and lower efficiency in inducing apoptosis and G2/M arrest. These results confirm the connection between reduction and activity, and prove the strong impact of the reduction site on the activity of Pt(IV) complexes.
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Affiliation(s)
- Verena Pichler
- University of Vienna, Faculty of Chemistry, Institute of Inorganic Chemistry, Waehringer Strasse 42, 1090 Vienna, Austria.
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9
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Dong J, Ren Y, Huo S, Shen S, Xu J, Tian H, Shi T. Reduction of ormaplatin and cis-diamminetetrachloroplatinum(iv) by ascorbic acid and dominant thiols in human plasma: kinetic and mechanistic analyses. Dalton Trans 2016; 45:11326-37. [DOI: 10.1039/c6dt01804a] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reductions of Pt(iv) anticancer prodrugs [Pt(dach)Cl4] (ormaplatin/tetraplatin) and cis-[Pt(NH3)2Cl4] by several dominant reductants in human plasma have been characterized and analyzed kinetically and mechanistically.
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Affiliation(s)
- Jingran Dong
- College of Chemistry and Environmental Science
- and the MOE Key Laboratory of Medicinal Chemistry and Molecular Diagnostics
- Hebei University
- Baoding 071002
- People's Republic of China
| | - Yanli Ren
- College of Chemistry and Environmental Science
- and the MOE Key Laboratory of Medicinal Chemistry and Molecular Diagnostics
- Hebei University
- Baoding 071002
- People's Republic of China
| | - Shuying Huo
- College of Chemistry and Environmental Science
- and the MOE Key Laboratory of Medicinal Chemistry and Molecular Diagnostics
- Hebei University
- Baoding 071002
- People's Republic of China
| | - Shigang Shen
- College of Chemistry and Environmental Science
- and the MOE Key Laboratory of Medicinal Chemistry and Molecular Diagnostics
- Hebei University
- Baoding 071002
- People's Republic of China
| | - Jianzhong Xu
- College of Chemistry and Environmental Science
- and the MOE Key Laboratory of Medicinal Chemistry and Molecular Diagnostics
- Hebei University
- Baoding 071002
- People's Republic of China
| | - Hongwu Tian
- College of Chemistry and Environmental Science
- and the MOE Key Laboratory of Medicinal Chemistry and Molecular Diagnostics
- Hebei University
- Baoding 071002
- People's Republic of China
| | - Tiesheng Shi
- College of Chemistry and Environmental Science
- and the MOE Key Laboratory of Medicinal Chemistry and Molecular Diagnostics
- Hebei University
- Baoding 071002
- People's Republic of China
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10
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Höfer D, Varbanov HP, Legin A, Jakupec MA, Roller A, Galanski MS, Keppler BK. Tetracarboxylatoplatinum(IV) complexes featuring monodentate leaving groups - A rational approach toward exploiting the platinum(IV) prodrug strategy. J Inorg Biochem 2015; 153:259-271. [PMID: 26365319 DOI: 10.1016/j.jinorgbio.2015.08.018] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Revised: 08/10/2015] [Accepted: 08/20/2015] [Indexed: 01/31/2023]
Abstract
A series of novel symmetrically and unsymmetrically coordinated platinum(IV) complexes with monodentate carboxylato ligands was synthesized. The compounds exhibit a general coordination sphere of [Pt(en)(OCOR)2(OCOR')(OCOR″)], where the carboxylato ligands are represented by acetato and succinic acid monoester ligands. Dicarboxylatoplatinum(II) complexes were synthesized and oxidized symmetrically or unsymmetrically to obtain platinum(IV) complexes, which were subsequently carboxylated with noncyclic anhydrides. The compounds were investigated in detail by elemental analysis, mass spectrometry, infrared and multinuclear ((1)H, (13)C, (15)N, (195)Pt) NMR spectroscopy as well as by X-ray diffraction in some cases. The reduction behavior was followed by NMR spectroscopy, while stability and lipophilicity were examined by analytical reversed phase HPLC measurements. Cytotoxic properties were studied in three human cancer cell lines derived from cisplatin sensitive ovarian teratocarcinoma (CH1/PA-1), cisplatin insensitive colon carcinoma (SW480) and non-small cell lung cancer (A549). Thereby, the most lipophilic (yet water soluble) platinum(IV) complexes showed promising IC50 values in the low micromolar and even nanomolar range, demonstrating the significant advantage of using equatorially coordinated monodentate carboxylato ligands.
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Affiliation(s)
- Doris Höfer
- Institute of Inorganic Chemistry, University of Vienna, Waehringer Strasse 42, A-1090 Vienna, Austria
| | - Hristo P Varbanov
- Institute of Inorganic Chemistry, University of Vienna, Waehringer Strasse 42, A-1090 Vienna, Austria; Institut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015, Lausanne, Switzerland.
| | - Anton Legin
- Institute of Inorganic Chemistry, University of Vienna, Waehringer Strasse 42, A-1090 Vienna, Austria
| | - Michael A Jakupec
- Institute of Inorganic Chemistry, University of Vienna, Waehringer Strasse 42, A-1090 Vienna, Austria; Research Platform "Translational Cancer Therapy Research", University of Vienna, Waehringer Strasse 42, A-1090 Vienna, Austria
| | - Alexander Roller
- Institute of Inorganic Chemistry, University of Vienna, Waehringer Strasse 42, A-1090 Vienna, Austria
| | - Mathea S Galanski
- Institute of Inorganic Chemistry, University of Vienna, Waehringer Strasse 42, A-1090 Vienna, Austria.
| | - Bernhard K Keppler
- Institute of Inorganic Chemistry, University of Vienna, Waehringer Strasse 42, A-1090 Vienna, Austria; Research Platform "Translational Cancer Therapy Research", University of Vienna, Waehringer Strasse 42, A-1090 Vienna, Austria.
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11
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Macias FJ, Deo KM, Pages BJ, Wormell P, Clegg JK, Zhang Y, Li F, Zheng G, Sakoff J, Gilbert J, Aldrich-Wright JR. Synthesis and Analysis of the Structure, Diffusion and Cytotoxicity of Heterocyclic Platinum(IV) Complexes. Chemistry 2015; 21:16990-7001. [PMID: 26439874 DOI: 10.1002/chem.201502159] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2015] [Indexed: 11/10/2022]
Abstract
We have developed six dihydroxidoplatinum(IV) compounds with cytotoxic potential. Each derived from active platinum(II) species, these complexes consist of a heterocyclic ligand (HL) and ancillary ligand (AL) in the form [Pt(HL)(AL)(OH)2](2+), where HL is a methyl-functionalised variant of 1,10-phenanthroline and AL is the S,S or R,R isomer of 1,2-diaminocyclohexane. NMR characterisation and X-ray diffraction studies clearly confirmed the coordination geometry of the octahedral platinum(IV) complexes. The self-stacking of these complexes was determined using pulsed gradient stimulated echo nuclear magnetic resonance. The self-association behaviour of square planar platinum(II) complexes is largely dependent on concentration, whereas platinum(IV) complexes do not aggregate under the same conditions, possibly due to the presence of axial ligands. The cytotoxicity of the most active complex, exhibited in several cell lines, has been retained in the platinum(IV) form.
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Affiliation(s)
- Freddy J Macias
- Nanoscale Organisation and Dynamics Group, Western Sydney University, Campbelltown, NSW 2560 (Australia)
| | - Krishant M Deo
- Nanoscale Organisation and Dynamics Group, Western Sydney University, Campbelltown, NSW 2560 (Australia)
| | - Benjamin J Pages
- Nanoscale Organisation and Dynamics Group, Western Sydney University, Campbelltown, NSW 2560 (Australia)
| | - Paul Wormell
- Nanoscale Organisation and Dynamics Group, Western Sydney University, Campbelltown, NSW 2560 (Australia)
| | - Jack K Clegg
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane St. Lucia, QLD 4072 (Australia)
| | - Yingjie Zhang
- Australian Nuclear Science and Technology Organisation, Kirrawee DC, NSW 2232 (Australia)
| | - Feng Li
- Nanoscale Organisation and Dynamics Group, Western Sydney University, Campbelltown, NSW 2560 (Australia)
| | - Gang Zheng
- Nanoscale Organisation and Dynamics Group, Western Sydney University, Campbelltown, NSW 2560 (Australia)
| | | | - Jayne Gilbert
- Calvary Mater Newcastle, Waratah, NSW 2298 (Australia)
| | - Janice R Aldrich-Wright
- Nanoscale Organisation and Dynamics Group, Western Sydney University, Campbelltown, NSW 2560 (Australia).
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12
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Hoffmeister BR, Hejl M, Jakupec MA, Galanski M, Keppler BK. Bis- and Tris(carboxylato)platinum(IV) Complexes with Mixed Am(m)ine Ligands in thetransPosition Exhibiting Exceptionally High Cytotoxicity. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201403226] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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13
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Varbanov HP, Göschl S, Heffeter P, Theiner S, Roller A, Jensen F, Jakupec MA, Berger W, Galanski M, Keppler BK. A novel class of bis- and tris-chelate diam(m)inebis(dicarboxylato)platinum(IV) complexes as potential anticancer prodrugs. J Med Chem 2014; 57:6751-64. [PMID: 25032896 PMCID: PMC4351917 DOI: 10.1021/jm500791c] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
A novel class of platinum(IV) complexes of the type [Pt(Am)(R(COO)2)2], where Am is a chelating diamine or two monodentate am(m)ine ligands and R(COO)2 is a chelating dicarboxylato moiety, was synthesized. For this purpose, the reaction between the corresponding tetrahydroxidoplatinum(IV) precursors and various dicarboxylic acids, such as oxalic, malonic, 3-methylmalonic, and cyclobutanedicarboxylic acid, was utilized. All new compounds were characterized in detail, using 1D and 2D NMR techniques, ESI-MS, FTIR spectroscopy, elemental analysis, TGA, and X-ray diffraction. Their in vitro cytotoxicity was determined in a panel of human tumor cell lines (CH1, SW480 and A549) by means of the MTT colorimetric assay. Furthermore, the lipophilicity and redox properties of the novel complexes were evaluated in order to better understand their pharmacological behavior. The most promising drug candidate, 4b (Pt(DACH)(mal)2), demonstrated low in vivo toxicity but profound anticancer activity against both the L1210 leukemia and CT-26 colon carcinoma models.
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Affiliation(s)
- Hristo P. Varbanov
- Institute of Inorganic Chemistry, University of Vienna, Waehringer Strasse 42, 1090 Vienna, Austria
| | - Simone Göschl
- Institute of Inorganic Chemistry, University of Vienna, Waehringer Strasse 42, 1090 Vienna, Austria
| | - Petra Heffeter
- Comprehensive Cancer Center and Department of Medicine I, Institute of Cancer Research, Medical University of Vienna, Borschkegasse 8a, 1090 Vienna, Austria
- Research Platform “Translational Cancer Therapy Research”, University of Vienna, Waehringer Strasse 42, 1090 Vienna, Austria
| | - Sarah Theiner
- Institute of Inorganic Chemistry, University of Vienna, Waehringer Strasse 42, 1090 Vienna, Austria
- Research Platform “Translational Cancer Therapy Research”, University of Vienna, Waehringer Strasse 42, 1090 Vienna, Austria
| | - Alexander Roller
- Institute of Inorganic Chemistry, University of Vienna, Waehringer Strasse 42, 1090 Vienna, Austria
| | - Frank Jensen
- Department of Chemistry, University of Aarhus, Langelandgade 140, 8000 Aarhus C, Denmark
| | - Michael A. Jakupec
- Institute of Inorganic Chemistry, University of Vienna, Waehringer Strasse 42, 1090 Vienna, Austria
- Research Platform “Translational Cancer Therapy Research”, University of Vienna, Waehringer Strasse 42, 1090 Vienna, Austria
| | - Walter Berger
- Comprehensive Cancer Center and Department of Medicine I, Institute of Cancer Research, Medical University of Vienna, Borschkegasse 8a, 1090 Vienna, Austria
- Research Platform “Translational Cancer Therapy Research”, University of Vienna, Waehringer Strasse 42, 1090 Vienna, Austria
| | - Markus Galanski
- Institute of Inorganic Chemistry, University of Vienna, Waehringer Strasse 42, 1090 Vienna, Austria
| | - Bernhard K. Keppler
- Institute of Inorganic Chemistry, University of Vienna, Waehringer Strasse 42, 1090 Vienna, Austria
- Research Platform “Translational Cancer Therapy Research”, University of Vienna, Waehringer Strasse 42, 1090 Vienna, Austria
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14
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Sabounchei SJ, Shahriary P, Gholiee Y, Salehzadeh S, Khavasi HR, Chehregani A. Platinum and palladium complexes with 5-methyl-5-(2-pyridyl)-2,4-imidazolidenedione: Synthesis, crystal and molecular structure, theoretical study, and pharmacological investigation. Inorganica Chim Acta 2014. [DOI: 10.1016/j.ica.2013.09.051] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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15
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Pichler V, Göschl S, Meier SM, Roller A, Jakupec MA, Galanski M, Keppler BK. Bulky N(,N)-(di)alkylethane-1,2-diamineplatinum(II) compounds as precursors for generating unsymmetrically substituted platinum(IV) complexes. Inorg Chem 2013; 52:8151-62. [PMID: 23790208 DOI: 10.1021/ic400816g] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Investigations of the influence of bulky groups in the equatorial ligand sphere of platinum(IV) compounds on the complexes' stability and reaction pattern were performed. Four dihydroxidoplatinum(IV) complexes were reacted with anhydrides, cinnamoyl chloride, and n-propyl isocyanate and yielded the symmetric dicarboxylated products or, if steric hindrance was observed, unsymmetrically substituted monocarboxylated analogues. With the aim of raising the steric demand, the following ligands were chosen: N-cyclohexylethane-1,2-diamine, N,N-dimethylethane-1,2-diamine, N,N-diethylethane-1,2-diamine, and N,N-diisopropylethane-1,2-diamine. All of the novel complexes were characterized by electrospray ionization mass spectrometry (ESI-MS), one- and two-dimensional NMR spectroscopy, elemental analysis, and reversed-phase HPLC; complexes B3, C3, C6, and D4 were also analyzed by X-ray diffraction. Additionally, the cytotoxicities of 10 compounds toward the cisplatin-sensitive cell line CH1 and the intrinsically cisplatin-resistant cell lines A549 and SW480 were investigated, and IC50 values down to the nanomolar range were found. To aid in the interpretation of structure-activity relationships, log k(w) values as a measure for the lipophilicity were determined for all of the new complexes, and the rates of reduction of C1, C3, and C4 relative to satraplatin were determined by means of NMR spectroscopy and ESI-MS.
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Affiliation(s)
- Verena Pichler
- Institute of Inorganic Chemistry, University of Vienna, Währinger Straße 42, A-1090 Vienna, Austria
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16
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Banfic J, Adib-Razavi MS, Galanski M, Keppler BK. Platinum(IV) Complexes Featuring Axial (1, 4-13C2)Succinato Ligands - Synthesis, Characterization, and Preliminary Investigations in Cancer Cell Lysates. Z Anorg Allg Chem 2013. [DOI: 10.1002/zaac.201300058] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Hoffmeister BR, Adib-Razavi MS, Jakupec MA, Galanski M, Keppler BK. Diamminetetrakis(carboxylato)platinum(IV) complexes--synthesis, characterization, and cytotoxicity. Chem Biodivers 2013; 9:1840-8. [PMID: 22976974 PMCID: PMC3499686 DOI: 10.1002/cbdv.201200019] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
A series of eight novel diamminetetrakis(carboxylato)platinum(IV) complexes was synthesized and characterized by multinuclear 1H-, 13C-, 15N-, and 195Pt-NMR spectroscopy. Their antiproliferative potency was evaluated in three human cancer cell lines representing ovarian (CH1), lung (A549), and colon carcinoma (SW480). In cisplatin-sensitive CH1 cancer cells, cytotoxicity was found in the low micromolar range, whereas, in inherently cisplatin-resistant A549 and SW480 cells, the activity was very low or negligible. Astonishingly, raise in lipophilicity of the complexes, as found in the case of cisplatin analogs, did not result in a significant enhancement of the cytotoxic effect.
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Affiliation(s)
- Björn R Hoffmeister
- University of Vienna, Institute of Inorganic Chemistry, Währinger Strasse 42, AT-1090 Vienna
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18
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Ameta RK, Singh M, Kale RK. Synthesis and structure–activity relationship of benzylamine supported platinum(iv) complexes. NEW J CHEM 2013. [DOI: 10.1039/c3nj41141a] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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19
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Pichler V, Heffeter P, Valiahdi SM, Kowol CR, Egger A, Berger W, Jakupec MA, Galanski M, Keppler BK. Unsymmetric mono- and dinuclear platinum(IV) complexes featuring an ethylene glycol moiety: synthesis, characterization, and biological activity. J Med Chem 2012. [PMID: 23194425 DOI: 10.1021/jm301645g] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Eight novel mononuclear and two dinuclear platinum(IV) complexes were synthesized and characterized by elemental analysis, one- and two-dimensional NMR spectroscopy, mass spectrometry, and reversed-phase HPLC (log k(w)) and in one case by X-ray diffraction. Cytotoxicity of the compounds was studied in three human cancer cell lines (CH1, SW480, and A549) by means of the MTT assay, featuring IC(50) values to the low micromolar range. Furthermore a selected set of compounds was investigated in additional cancer cell lines (P31 and P31/cis, A2780 and A2780/cis, SW1573, 2R120, and 2R160) with regard to their resistance patterns, offering a distinctly different scheme compared to cisplatin. To gain further insights into the mode of action, drug uptake, DNA synthesis inhibition, cell cycle effects, and induction of apoptosis were determined for two characteristic substances.
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Affiliation(s)
- Verena Pichler
- Institute of Inorganic Chemistry, University of Vienna, Waehringer Strasse 42, A-1090 Vienna, Austria
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20
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Song H, Wang R, Xiao H, Cai H, Zhang W, Xie Z, Huang Y, Jing X, Liu T. A cross-linked polymeric micellar delivery system for cisplatin(IV) complex. Eur J Pharm Biopharm 2012; 83:63-75. [PMID: 23046872 DOI: 10.1016/j.ejpb.2012.09.004] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2012] [Revised: 09/09/2012] [Accepted: 09/10/2012] [Indexed: 10/27/2022]
Abstract
A polymeric cisplatin(IV) prodrug in the form of cross-linked micelles (M(Pt(IV)) was prepared by first constructing MPEG-b-PCL-b-PLL micelles and then attaching a cisplatin(IV) complex with two axial succinic moieties to the lysine residues of the carrier polymer in aqueous medium. The micelles obtained were characterized by TEM, DLS, and zeta potential measurement. Their in vitro release experiments were carried out at pH 7.4 and 5.0 or in the presence of 5mM sodium ascorbate (NaAsc). Results showed that the micelles were sensitive to both acidic hydrolysis and mild reducing agents; in the presence of 5mM NaAsc, cisplatin(II) was directly released and the released cisplatin(II) could chelate with nucleobases; the micelles displayed comparable cytotoxicities to cisplatin; and the micelles were much more efficiently internalized by the cells than cisplatin(II) and cisplatin(IV) counterparts. Moreover, in vivo study showed accumulation of more Pt species in the tumor site and lower systematic toxicity compared to free cisplatin(II) and cisplatin(IV). This polymeric prodrug of cisplatin is expected to be used more for future study and applications.
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Affiliation(s)
- Haiqin Song
- Department of Colorectal and Anal Surgery, China-Japan Union Hospital of Jilin University, Changchun, People's Republic of China
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21
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Xiao H, Li W, Qi R, Yan L, Wang R, Liu S, Zheng Y, Xie Z, Huang Y, Jing X. Co-delivery of daunomycin and oxaliplatin by biodegradable polymers for safer and more efficacious combination therapy. J Control Release 2012; 163:304-14. [PMID: 22698937 DOI: 10.1016/j.jconrel.2012.06.004] [Citation(s) in RCA: 92] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2012] [Accepted: 06/03/2012] [Indexed: 10/28/2022]
Abstract
An oxaliplatin pro-drug (Oxa(IV)-COOH) with an axial carboxyl group was synthesized and conjugated to biodegradable polymers with pendant hydroxyl groups to prepare polymer-Oxa(IV) conjugates. A hydrophobic anthracycline-based drug, daunorubicin (DRB) was conjugated to similar biodegradable polymers with carboxyl groups to synthesize polymer-DRB conjugates. The two drug conjugates have the similar polymer backbone and are amphiphilic; thus, they can co-assemble into composite micelles. In the composite micelles, the polymer-Oxa(IV) conjugates can release clinically widely used water soluble anticancer drug oxaliplatin (Oxa(II)) upon reduction, while polymer-DRB conjugate is thought to release DRB via acid hydrolysis in the cancer cells. In this way, combination of the hydrophilic platinum drug Oxa(II) and hydrophobic drug DRB can be realized by delivering them in one platform. Moreover, the composite micelles showed reduced systematic toxicity and greater synergistic effect than combination of small molecules of the two anticancer drugs both in vitro and in vivo; thus, this polymer based combination therapy can be useful in future clinic application.
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Affiliation(s)
- Haihua Xiao
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of China
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22
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Varbanov HP, Valiahdi SM, Kowol CR, Jakupec MA, Galanski M, Keppler BK. Novel tetracarboxylatoplatinum(iv) complexes as carboplatin prodrugs. Dalton Trans 2012; 41:14404-14415. [DOI: 10.1039/c2dt31366a] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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23
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Varbanov H, Valiahdi SM, Legin AA, Jakupec MA, Roller A, Galanski MS, Keppler BK. Synthesis and characterization of novel bis(carboxylato)dichloridobis(ethylamine)platinum(IV) complexes with higher cytotoxicity than cisplatin. Eur J Med Chem 2011; 46:5456-64. [PMID: 21940073 PMCID: PMC3206992 DOI: 10.1016/j.ejmech.2011.09.006] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2011] [Revised: 07/22/2011] [Accepted: 09/04/2011] [Indexed: 11/17/2022]
Abstract
A series of six novel bis(carboxylato)dichloridobis(ethylamine)platinum(IV) complexes was synthesized and characterized in detail by elemental analysis, FT-IR, ESI-MS, HPLC, multinuclear (1H, 13C, 15N, 195Pt) NMR spectroscopy and in one case by X-ray diffraction. Cytotoxic properties of the complexes were evaluated in four human tumor cell lines originating from ovarian carcinoma (CH1 and SK-OV-3), colon carcinoma (SW480) and non-small cell lung cancer (A549) by means of the MTT colorimetrical assay. In addition, their octanol/water partition coefficients (log P values) were determined. Remarkably the most active (and also most lipophilic) compounds, having 4-propyloxy-4-oxobutanoato and 4-(2-propyloxy)-4-oxobutanoato axial ligands, showed IC50 values down to the low nanomolar range.
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24
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Djinovic VM, Galanski M, Arion VB, Keppler BK. Synthesis and structures of novel 1-methylcytosinato-bridged (ethylenediamine)platinum(ii) and platinum(iii) dinuclear complexes. Dalton Trans 2010; 39:3633-43. [DOI: 10.1039/b926133h] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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25
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Haeubl M, Reith LM, Gruber B, Karner U, Müller N, Knör G, Schoefberger W. DNA interactions and photocatalytic strand cleavage by artificial nucleases based on water-soluble gold(III) porphyrins. J Biol Inorg Chem 2009; 14:1037-52. [PMID: 19471974 DOI: 10.1007/s00775-009-0547-z] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2009] [Accepted: 05/04/2009] [Indexed: 11/28/2022]
Abstract
The novel gold porphyrin complex (5,10,15-tris(N-methylpyridinium-4-yl)-20-(1-pyrenyl)-porphyrinato)gold(III) chloride, [Au(III)(TMPy3Pyr1P)]Cl4, was prepared and characterized by optical spectroscopy, high-resolution nuclear magnetic resonance (NMR), and electrospray mass spectrometry. This cationic multichromophore compound exhibits excellent water solubility and does not form aggregates under physiological conditions. Binding interactions of this complex and related model compounds with nucleic acid substrates have been studied and characterized by NMR and circular dichroism spectroscopy. The photoreactivity of [Au(III)(TMPy3Pyr1P)]Cl4 was investigated under anaerobic and aerobic conditions in the presence of an excess of purine nucleoside, guanosine, and plasmid DNA. Photocatalytic oxidative degradation of guanosine and the change from supercoiled to circular plasmid DNA upon monochromatic irradiation and polychromatic blue-light exposure with a maximum at 420 nm was explored. The potential of the novel water-soluble cationic metallointercalator complex [Au(III)(TMPy3Pyr1P)]Cl4 to serve as a catalytic photonuclease for the cleavage of DNA has been demonstrated.
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Affiliation(s)
- Martin Haeubl
- Institut für Organische Chemie, Johannes Kepler Universität Linz (JKU), Altenberger Str. 69, 4040 Linz, Austria
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26
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Gaballa AS, Schmidt H, Wagner C, Steinborn D. Structure and characterization of platinum(II) and platinum(IV) complexes with protonated nucleobase ligands. Inorganica Chim Acta 2008. [DOI: 10.1016/j.ica.2007.10.023] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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27
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Reisner E, Arion VB, Keppler BK, Pombeiro AJ. Electron-transfer activated metal-based anticancer drugs. Inorganica Chim Acta 2008. [DOI: 10.1016/j.ica.2006.12.005] [Citation(s) in RCA: 124] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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28
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Choi S, Vastag L, Larrabee YC, Personick ML, Schaberg KB, Fowler BJ, Sandwick RK, Rawji G. Importance of platinum(II)-assisted platinum(IV) substitution for the oxidation of guanosine derivatives by platinum(IV) complexes. Inorg Chem 2008; 47:1352-60. [PMID: 18220340 DOI: 10.1021/ic701868b] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Guanosine derivatives with a nucleophilic group at the 5' position (G-5') are oxidized by the Pt (IV) complex Pt( d, l)(1,2-(NH 2) 2C 6H 10)Cl 4 ([Pt (IV)(dach)Cl 4]). The overall redox reaction is autocatalytic, consisting of the Pt (II)-catalyzed Pt (IV) substitution and two-electron transfer between Pt (IV) and the bound G-5'. In this paper, we extend the study to improve understanding of the redox reaction, particularly the substitution step. The [Pt (II)(NH 3) 2(CBDCA-O,O')] (CBDCA = cyclobutane-1,1-dicarboxylate) complex effectively accelerates the reactions of [Pt (IV)(dach)Cl 4] with 5'-dGMP and with cGMP, indicating that the Pt (II) complex does not need to be a Pt (IV) analogue to accelerate the substitution. Liquid chromatography/mass spectroscopy (LC/MS) analysis showed that the [Pt (IV)(dach)Cl 4]/[Pt (II)(NH 3) 2(CBDCA-O,O')]/cGMP reaction mixture contained two Pt (IV)cGMP adducts, [Pt (IV)(NH 3) 2(cGMP)(Cl)(CBDCA-O,O')] and [Pt (IV)(dach)(cGMP)Cl 3]. The LC/MS studies also indicated that the trans, cis-[Pt (IV)(dach)( (37)Cl) 2( (35)Cl) 2]/[Pt (II)(en)( (35)Cl) 2]/9-EtG mixture contained two Pt (IV)-9-EtG adducts, [Pt (IV)(en)(9-EtG)( (37)Cl)( (35)Cl) 2] and [Pt (IV)(dach)(9-EtG)( (37)Cl)( (35)Cl) 2]. These Pt (IV)G products are predicted by the Basolo-Pearson (BP) Pt (II)-catalyzed Pt (IV)-substitution scheme. The substitution can be envisioned as an oxidative addition reaction of the planar Pt (II) complex where the entering ligand G and the chloro ligand from the axial position of the Pt (IV) complex are added to Pt (II) in the axial positions. From the point of view of reactant Pt (IV), an axial chloro ligand is thought to be substituted by the entering ligand G. The Pt (IV) complexes without halo axial ligands such as trans, cis-[Pt(en)(OH) 2Cl 2], trans, cis-[Pt(en)(OCOCF 3) 2Cl 2], and cis, trans, cis-[Pt(NH 3)(C 6H 11NH 2)(OCOCH 3) 2Cl 2] ([Pt (IV)(a,cha)(OCOCH 3) 2Cl 2], satraplatin) did not react with 5'-dGMP. The bromo complex, [Pt (IV)(en)Br 4], showed a significantly faster substitution rate than the chloro complexes, [Pt (IV)(en)Cl 4] and [Pt (IV)(dach)Cl 4]. The results indicate that the axial halo ligands are essential for substitution and the Pt (IV) complexes with larger axial halo ligands have faster rates. When the Pt (IV) complexes with different carrier ligands were compared, the substitution rates increased in the order [Pt (IV)(dach)Cl 4] < [Pt (IV)(en)Cl 4] < [Pt (IV)(NH 3) 2Cl 4], which is in reverse order to the carrier ligand size. These axial and carrier ligand effects on the substitution rates are consistent with the BP mechanism. Larger axial halo ligands can form a better bridging ligand, which facilitates the electron-transfer process from the Pt (II) to Pt (IV) center. Smaller carrier ligands exert less steric hindrance for the bridge formation.
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Affiliation(s)
- Sunhee Choi
- Department of Chemistry and Biochemistry, Middlebury College, Middlebury, VT 05753, USA.
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29
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Timerbaev AR, Hartinger CG, Aleksenko SS, Keppler BK. Interactions of antitumor metallodrugs with serum proteins: advances in characterization using modern analytical methodology. Chem Rev 2007; 106:2224-48. [PMID: 16771448 DOI: 10.1021/cr040704h] [Citation(s) in RCA: 523] [Impact Index Per Article: 30.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Andrei R Timerbaev
- Institute of Inorganic Chemistry, University of Vienna, Währinger Strasse 42, A-1090 Vienna, Austria
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30
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Gómez K, González G, Martínez M, Mendoza C, Sienra B. Absence of phosphate hydrolysis in the nucleotide substitution reaction on cis-[Co(H2O)2(cyclen)]3+ at physiological pH: Importance of hydrogen-bonding and conjugate base-catalysis. Polyhedron 2006. [DOI: 10.1016/j.poly.2006.06.041] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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31
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Łakomska I, Golankiewicz B, Wietrzyk J, Pełczyńska M, Nasulewicz A, Opolski A, Sitkowski J, Kozerski L, Szłyk E. Synthesis, spectroscopical characterization and the biological activity in vitro of new platinum(II) complexes with imidazo[1,5-a]-1,3,5-triazine derivatives and dimethylsulfoxide. Inorganica Chim Acta 2005. [DOI: 10.1016/j.ica.2004.12.033] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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32
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Teleb SM. Spectroscopic studies on Co(II) and Cu(II) complexes of 6-amino-1-methyl-5-nitrosouracil and its 6-methylamine derivative. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2004; 60:3093-3100. [PMID: 15477149 DOI: 10.1016/j.saa.2004.01.032] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2003] [Accepted: 01/23/2004] [Indexed: 05/24/2023]
Abstract
Four complexes are obtained during the reactions of 6-amino-1-methyl-5-nitrosouracil and its 6-methylamine derivative with Co(II) and Cu(II) ions. Theses complexes were characterized through their elemental, thermal analysis, infrared and 1H NMR spectroscopes. The obtained results indicate that, the exocyclic oxygen and nitrogen atoms are the most probable binding sites rather than ring nitrogen atoms. For cobalt complexes, the two pyrimidine bases act as bidentate ligands in the anionic form with the dissociation of iminic or N3 proton depending upon the nature of substituents on the pyrimidine ring. For copper complexes, the pyrimidine bases interact in the neutral form as monodentate ligands. Octahedral geometries are proposed for all of these complexes.
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Affiliation(s)
- Said M Teleb
- Chemistry Department, Faculty of Science, Zagazig University, Egypt.
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33
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Łakomska I, Szłyk E, Sitkowski J, Kozerski L, Wietrzyk J, Pełczyńska M, Nasulewicz A, Opolski A. Multinuclear NMR spectroscopy and antitumor activity of novel platinum(II) complexes with 5,7-disubstituted-1,2,4-triazolo[1,5- a ]pyrimidines. J Inorg Biochem 2004; 98:167-72. [PMID: 14659646 DOI: 10.1016/j.jinorgbio.2003.09.001] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Novel platinum(II) complexes with 5,7-disubstituted-1,2,4-triazolo[1,5-a]pyrimidines have been synthesized and characterized by infrared and multinuclear magnetic resonance spectroscopic techniques (1H, 13C, 15N, 195Pt). The complexes are of two types: [PtCl2(L)2] and [PtCl2(NH3)(L)], where L=5,7-diphenyl-1,2,4-triazolo[1,5-a]pyrimidine (dptp) and 5,7-ditertbutyl-1,2,4-triazolo[1,5-a]pyrimidine (dbtp). Significant 15N NMR upfield shifts (92-95 ppm) were observed for N(3) atom indicating this nitrogen atom as a coordination site. The molecular structure suggest that Pt(II) ion has the square planar geometry with N(3) bonded 5,7-disubstituted-1,2,4-triazolo[1,5-a]pyrimidines, N-bonded second ligand (NH3 for cis-[PtCl2(NH3)(L)] or, respectively, 5,7-disubstituted-1,2,4-triazolo[1,5-a]pyrimidines for cis-[PtCl2L2]) and two cis chloride anions. The antiproliferative activity in vitro of complexes (1-4) have been tested against the cells of four human cell lines: SW707 rectal adenocarcinoma, A549 non-small cell lung carcinoma, T47D breast cancer and HCV29T bladder cancer. The results indicate a moderate antiproliferative activity of (4) against the cells of rectal, breast and bladder cancer and a marked and selective cytotoxic effect of (1-3) against the cells of all studied human cancer lines.
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Affiliation(s)
- Iwona Łakomska
- Department of Chemistry, Nicholas Copernicus University, Gagarina 7, Toruń 87-100, Poland.
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Jakupec MA, Galanski MS, Keppler BK. Tumour-inhibiting platinum complexes--state of the art and future perspectives. Rev Physiol Biochem Pharmacol 2003; 146:1-54. [PMID: 12605304 DOI: 10.1007/s10254-002-0001-x] [Citation(s) in RCA: 308] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Thirty years after the onset of the first clinical studies with cisplatin, the development of antineoplastic platinum drugs continues to be a productive field of research. This article reviews the current preclinical and clinical status, including a discussion of the molecular basis for the activity of the parent drug cisplatin and platinum drugs of the second and third generation, in particular their interaction with DNA. Further emphasis is laid on the development of third generation platinum drugs with activity in cisplatin-resistant tumours, particularly on chelates containing 1,2-diaminocyclohexane (DACH) and on the promising and more recently evolving field of non-classic ( trans- and multinuclear) platinum complexes. The development of oral platinum drugs and drug targeting strategies using liposomes, polymers or low-molecular-weight carriers in order to improve the therapeutic index of platinum chemotherapy are also covered.
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Affiliation(s)
- M A Jakupec
- Institute of Inorganic Chemistry, University of Vienna, Währinger Strasse 42, 1090, Vienna, Austria
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35
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36
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Szłyk E, Łakomska I, Kobe J, Surdykowski A, Głowiak T, Sitkowski J. The bonding of ribavirin to platinum(II) ion. Polyhedron 2002. [DOI: 10.1016/s0277-5387(02)01103-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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37
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Davies MS, Wong PN, Battle AR, Haddad G, McKeage MJ, Hambley TW. Examination of the effects of oxidation and ring closure on the cytotoxicities of the platinum complexes of N-(2-hydroxyethyl)ethane-1,2-diamine and ethane-1,2-diamine-N,N'-diacetic acid. J Inorg Biochem 2002; 91:205-11. [PMID: 12121777 DOI: 10.1016/s0162-0134(02)00376-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The crystal structures, electrochemical properties and cytotoxicities of platinum(II) and platinum(IV) complexes of the multidentate ligands N-(2-hydroxyethyl)ethane-1,2-diamine (NNOH) and ethane-1,2-diamine-N,N'-diacetic acid (H(2)enda) are reported. In the platinum(II) state the NNOH and H(2)enda ligands act as bidentate ligands, coordinating through the two amine groups with the hydroxyethyl and carboxylate groups remaining uncoordinated. Oxidation with hydrogen peroxide followed by refluxing yields the ring closed Pt(IV) complexes in which the NNOH and H(2)enda ligands are deprotonated and coordinate via the two amine groups and either the deprotonated alcohol group in the case of NNO or both carboxylato groups in the case of enda. The platinum(IV) complex of NNO is 2- to 5-fold more active against a panel of cisplatin sensitive and resistant human tumour cell lines than is the platinum(II) complex, whereas in the case of enda, the reverse is true. Ring closure to occupy both axial sites apparently leads to deactivation of platinum(IV) complexes, but a single closure does not necessarily do so.
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Affiliation(s)
- Murray S Davies
- Centre for Heavy Metals Research, School of Chemistry, University of Sydney, Sydney NSW 2006, Australia
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Maruyama K, Mishima Y, Minagawa K, Motonaka J. Electrochemical and DNA-binding properties of dipyridophenazine complexes of osmium(II). J Electroanal Chem (Lausanne) 2001. [DOI: 10.1016/s0022-0728(01)00549-6] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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