1
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Margiotta N, Pacifico C, Saltarella T, Natile G, Intini FP. Synthesis and characterization of new platinum(II) complexes with cyclic iminoether-type ligands having the azomethine group out of cycle. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2021.120655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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2
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Brabec V, Hrabina O, Kasparkova J. Cytotoxic platinum coordination compounds. DNA binding agents. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2017.04.013] [Citation(s) in RCA: 77] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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3
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Johnstone TC, Suntharalingam K, Lippard SJ. The Next Generation of Platinum Drugs: Targeted Pt(II) Agents, Nanoparticle Delivery, and Pt(IV) Prodrugs. Chem Rev 2016; 116:3436-86. [PMID: 26865551 PMCID: PMC4792284 DOI: 10.1021/acs.chemrev.5b00597] [Citation(s) in RCA: 1659] [Impact Index Per Article: 207.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The platinum drugs, cisplatin, carboplatin, and oxaliplatin, prevail in the treatment of cancer, but new platinum agents have been very slow to enter the clinic. Recently, however, there has been a surge of activity, based on a great deal of mechanistic information, aimed at developing nonclassical platinum complexes that operate via mechanisms of action distinct from those of the approved drugs. The use of nanodelivery devices has also grown, and many different strategies have been explored to incorporate platinum warheads into nanomedicine constructs. In this Review, we discuss these efforts to create the next generation of platinum anticancer drugs. The introduction provides the reader with a brief overview of the use, development, and mechanism of action of the approved platinum drugs to provide the context in which more recent research has flourished. We then describe approaches that explore nonclassical platinum(II) complexes with trans geometry or with a monofunctional coordination mode, polynuclear platinum(II) compounds, platinum(IV) prodrugs, dual-threat agents, and photoactivatable platinum(IV) complexes. Nanoparticles designed to deliver platinum(IV) complexes will also be discussed, including carbon nanotubes, carbon nanoparticles, gold nanoparticles, quantum dots, upconversion nanoparticles, and polymeric micelles. Additional nanoformulations, including supramolecular self-assembled structures, proteins, peptides, metal-organic frameworks, and coordination polymers, will then be described. Finally, the significant clinical progress made by nanoparticle formulations of platinum(II) agents will be reviewed. We anticipate that such a synthesis of disparate research efforts will not only help to generate new drug development ideas and strategies, but also will reflect our optimism that the next generation of approved platinum cancer drugs is about to arrive.
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Affiliation(s)
- Timothy C Johnstone
- Department of Chemistry, Massachusetts Institute of Technology , Cambridge, Massachusetts 02139, United States
| | | | - Stephen J Lippard
- Department of Chemistry, Massachusetts Institute of Technology , Cambridge, Massachusetts 02139, United States
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4
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Vrana O, Novohradsky V, Medrikova Z, Burdikova J, Stuchlikova O, Kasparkova J, Brabec V. Internalization of Ineffective Platinum Complex in Nanocapsules Renders It Cytotoxic. Chemistry 2016; 22:2728-35. [DOI: 10.1002/chem.201504671] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Indexed: 11/08/2022]
Affiliation(s)
- Oldrich Vrana
- Institute of Biophysics; Academy of Sciences of the Czech Republic, v.v.i.; Kralovopolska 135 612 65 Brno Czech Republic
| | - Vojtech Novohradsky
- Institute of Biophysics; Academy of Sciences of the Czech Republic, v.v.i.; Kralovopolska 135 612 65 Brno Czech Republic
| | - Zdenka Medrikova
- Regional Centre of Advanced Technologies and Materials; Department of Physical Chemistry; Faculty of Science; Palacky University; 17. listopadu 12 77146 Olomouc Czech Republic
| | - Jana Burdikova
- Materials Research Centre; Faculty of Chemistry; Brno University of Technology; Purkynova 118 61200 Brno Czech Republic
| | - Olga Stuchlikova
- Institute of Biophysics; Academy of Sciences of the Czech Republic, v.v.i.; Kralovopolska 135 612 65 Brno Czech Republic
- Department of Biophysics; Faculty of Science; Palacky University; 17. listopadu 12 77146 Olomouc Czech Republic
| | - Jana Kasparkova
- Institute of Biophysics; Academy of Sciences of the Czech Republic, v.v.i.; Kralovopolska 135 612 65 Brno Czech Republic
- Department of Biophysics; Faculty of Science; Palacky University; 17. listopadu 12 77146 Olomouc Czech Republic
| | - Viktor Brabec
- Institute of Biophysics; Academy of Sciences of the Czech Republic, v.v.i.; Kralovopolska 135 612 65 Brno Czech Republic
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5
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Shi H, Cheng Q, Yuan S, Ding X, Liu Y. Human Serum Albumin Conjugated Nanoparticles for pH and Redox-Responsive Delivery of a Prodrug of Cisplatin. Chemistry 2015; 21:16547-54. [PMID: 26405808 DOI: 10.1002/chem.201502756] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2015] [Indexed: 01/21/2023]
Abstract
Platinum anticancer drugs are particularly in need of controlled drug delivery because of their severe side effects. Platinum(IV) agents are designed as prodrugs to reduce the side effects of platinum(II) drugs; however, premature reduction could limit the effect as a prodrug. In this work, a highly biocompatible, pH and redox dual-responsive delivery system is prepared by using hybrid nanoparticles of human serum albumin (HSA) and calcium phosphate (CaP) for the Pt(IV) prodrug of cisplatin. This conjugate is very stable under extracellular conditions, so that it protects the platinum(IV) prodrug in HSA. Upon reaching the acidic and hypoxic environment, the platinum drug is released in its active form and is able to bind to the target DNA. The Pt-HSA/CaP hybrid inhibits the proliferation of various cancer cells more efficiently than cisplatin. Different cell cycle arrests suggest different cellular responses of the Pt(IV) prodrug in the CaP nanocarrier. Interestingly, this delivery system demonstrates enhanced cytotoxicity to tumor cells, but not to normal cells.
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Affiliation(s)
- Hongdong Shi
- CAS Key Laboratory of Soft Matter Chemistry, CAS High Magnetic Field Laboratory, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026 (P.R. China)
| | - Qinqin Cheng
- CAS Key Laboratory of Soft Matter Chemistry, CAS High Magnetic Field Laboratory, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026 (P.R. China)
| | - Siming Yuan
- CAS Key Laboratory of Soft Matter Chemistry, CAS High Magnetic Field Laboratory, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026 (P.R. China)
| | - Xin Ding
- CAS Key Laboratory of Soft Matter Chemistry, CAS High Magnetic Field Laboratory, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026 (P.R. China)
| | - Yangzhong Liu
- CAS Key Laboratory of Soft Matter Chemistry, CAS High Magnetic Field Laboratory, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026 (P.R. China).
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6
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Li C, Ding Y, Cheng L, Zheng Y, Sletten E, Liu Y. Effects of Buffers and pH on the Reaction of a
trans
‐Platinum Complex with 5′‐Guanosine Monophosphate. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201500728] [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]
Affiliation(s)
- Chan Li
- CAS High Magnetic Field Laboratory, Department of Chemistry, University of Science and Technology of China, Hefei Anhui, 230026, P. R. China, http://staff.ustc.edu.cn/~liuyz
- CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China
| | - Yi Ding
- CAS High Magnetic Field Laboratory, Department of Chemistry, University of Science and Technology of China, Hefei Anhui, 230026, P. R. China, http://staff.ustc.edu.cn/~liuyz
| | - Lanjun Cheng
- CAS High Magnetic Field Laboratory, Department of Chemistry, University of Science and Technology of China, Hefei Anhui, 230026, P. R. China, http://staff.ustc.edu.cn/~liuyz
| | - Yuchuan Zheng
- Department of Chemistry, Huangshan University, Huangshan, Anhui 245041, P. R. China
| | - Einar Sletten
- Department of Chemistry, University of Bergen, Allegt. 41, 5007 Bergen, Norway
| | - Yangzhong Liu
- CAS High Magnetic Field Laboratory, Department of Chemistry, University of Science and Technology of China, Hefei Anhui, 230026, P. R. China, http://staff.ustc.edu.cn/~liuyz
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7
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Brabec V, Pracharova J, Novakova O, Gibson D, Kasparkova J. The induction of lysis in lysogenic strains of Escherichia coli by a new antitumor transplatin derivative and its DNA interactions. Dalton Trans 2015; 44:3573-82. [DOI: 10.1039/c4dt02603a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
DNA is the cellular target for antitumor derivatives of transplatin including those containing small aliphatic amino ligands.
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Affiliation(s)
- Viktor Brabec
- Institute of Biophysics
- Academy of Sciences of the Czech Republic
- CZ-61265 Brno
- Czech Republic
| | - Jitka Pracharova
- Department of Biophysics
- Centre of the Region Hana for Biotechnological and Agricultural Research
- Palacky University
- 783 41 Olomouc
- Czech Republic
| | - Olga Novakova
- Institute of Biophysics
- Academy of Sciences of the Czech Republic
- CZ-61265 Brno
- Czech Republic
| | - Dan Gibson
- Institute for Drug Research
- School of Pharmacy
- The Hebrew University
- Jerusalem 91120
- Israel
| | - Jana Kasparkova
- Department of Biophysics
- Faculty of Science
- Palacky University
- CZ-77146 Olomouc
- Czech Republic
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8
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Sinisi M, Gandin V, Saltarella T, Intini FP, Pacifico C, Marzano C, Natile G. Synthesis, characterization, and biological activity of platinum II, III, and IV pivaloamidine complexes. J Biol Inorg Chem 2014; 19:1081-97. [PMID: 24850131 DOI: 10.1007/s00775-014-1146-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2013] [Accepted: 05/03/2014] [Indexed: 11/24/2022]
Abstract
Imino ligands have proven to be able to activate the trans geometry of platinum(II) complexes towards antitumor activity. These ligands, like aromatic N-donor heterocycles, have a planar shape but, different from the latter, have still an H atom on the coordinating nitrogen which can be involved in H-bond formation. Three classes of imino ligands have been extensively investigated: iminoethers (HN=C(R)OR'), ketimines (HN=CRR'), and amidines (HN=C(R)NR'R″). The promising efficacy of the platinum compounds with amidines (activity comparable to that of cisplatin for cis complexes and much greater than that of transplatin for trans complexes) prompted us to extend the investigation to amidine complexes with a bulkier organic residue (R = t-Bu). The tert-butyl group can confer greater affinity for lipophilic environments, thus potentiating the cellular uptake of the compound. In the present study we describe the synthesis and characterization of pivaloamidine complexes of platinum(II), (cis and trans-[PtCl2(NH3){Z-HN=C(t-Bu)NH2}] and cis and trans-[PtCl2{Z-HN=C(t-Bu)NH2}2]), platinum(III) ([Pt2Cl4{HN=C(t-Bu)NH}2(NH3)2]), and platinum(IV) (trans-[PtCl4(NH3){Z-HN=C(t-Bu)NH2}] and trans-[PtCl4{Z-HN=C(t-Bu)NH2}2]). The cytotoxicity of all new Pt complexes was tested toward a panel of cultured cancer cell lines, including cisplatin and multidrug resistant variants. In addition, cellular uptake and DNA binding, perturbations of cell cycle progression, induction of apoptosis, and p53 activation were investigated for the most promising compound trans-[PtCl2(NH3){Z-HN=C(t-Bu)NH2}]. Remarkably, the latter complex was able to overcome both acquired and intrinsic cisplatin resistance.
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Affiliation(s)
- Marilù Sinisi
- Dipartimento di Chimica, University of Bari "Aldo Moro", via E. Orabona 4, 70125, Bari, Italy
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9
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Synthesis, Crystal Structure, and Biological Study of PtIIComplexes with 4-Acyl-5-pyrazolones. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201301479] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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10
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Cheng Q, Shi H, Wang H, Min Y, Wang J, Liu Y. The ligation of aspirin to cisplatin demonstrates significant synergistic effects on tumor cells. Chem Commun (Camb) 2014; 50:7427-30. [DOI: 10.1039/c4cc00419a] [Citation(s) in RCA: 136] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Asplatin, a fusion of aspirin and cisplatin, exhibits significant synergistic-effects on tumor cells and cisplatin-resistant cells.
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Affiliation(s)
- Qinqin Cheng
- CAS Key Laboratory of Soft Matter Chemistry
- CAS High Magnetic Field Laboratory
- Department of Chemistry
- University of Science and Technology of China
- Hefei, China
| | - Hongdong Shi
- CAS Key Laboratory of Soft Matter Chemistry
- CAS High Magnetic Field Laboratory
- Department of Chemistry
- University of Science and Technology of China
- Hefei, China
| | - Hongxia Wang
- School of Life Sciences
- University of Science and Technology of China
- Hefei, China
| | - Yuanzeng Min
- CAS Key Laboratory of Soft Matter Chemistry
- CAS High Magnetic Field Laboratory
- Department of Chemistry
- University of Science and Technology of China
- Hefei, China
| | - Jun Wang
- School of Life Sciences
- University of Science and Technology of China
- Hefei, China
| | - Yangzhong Liu
- CAS Key Laboratory of Soft Matter Chemistry
- CAS High Magnetic Field Laboratory
- Department of Chemistry
- University of Science and Technology of China
- Hefei, China
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11
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Legin AA, Jakupec MA, Bokach NA, Tyan MR, Kukushkin VY, Keppler BK. Guanidine platinum(II) complexes: synthesis, in vitro antitumor activity, and DNA interactions. J Inorg Biochem 2013; 133:33-9. [PMID: 24444821 PMCID: PMC3989059 DOI: 10.1016/j.jinorgbio.2013.12.007] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2013] [Revised: 12/16/2013] [Accepted: 12/16/2013] [Indexed: 11/26/2022]
Abstract
The novel guanidine compounds trans-[Pt(NH2Me)2{NH=C(NHMe)NR}2](Cl)2 (R = NEt2 [7], NC5H10 [8]) (trans-7,8) were synthesized by the nucleophilic addition of methylamine to dialkylcyanamide ligands of the push–pull nitrile complexes trans-[PtCl2(RCN)2] (R = NEt2, NC5H10). In vitro cytotoxicity tests conducted for the entire series of the guanidine complexes, i.e. trans-7,8, the neutral cis- or trans-[PtCl2{NH=C(NH2)R}2] (cis-1–3 and trans-1–3) and the cationic cis- or trans-[Pt(NH3)2{NH=C(NH2)R}2](Cl)2 (cis-4–6 and trans-4–6) (R = NMe2 [1,4], NEt2 [2,5], NC5H10 [3,6]) in two human cancer cell lines, CH1 (ovarian carcinoma) and SW480 (colon cancer), confirmed that the cytotoxicity of several trans-configured (trans-3,6) complexes is higher than that of cis-congeners (cis-3,6). Cellular platinum levels were analyzed by inductively coupled plasma mass spectrometry upon treatment of SW480 cells, revealing a dependence of cellular accumulation on the geometrical isomerism and the steric hindrance of the variable substituent R on the guanidine ligand. DNA interactions of selected guanidine complexes were studied in order to find hints for the possible reasons for their different activities. Changes induced to the electrophoretic mobility of a dsDNA plasmid confirmed the potency of the guanidine complexes (e.g. trans-1,3,5,6 and cis-1,3,4) to significantly alter DNA secondary structure, indicating DNA as a possible critical target of these compounds. A series of guanidine–Pt(II) complexes was extended with two new compounds. Structure–activity relationships were inferred from cell culture studies. New examples of active platinum complexes with trans geometry were identified.
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Affiliation(s)
- Anton A Legin
- 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
| | - 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.
| | - Nadezhda A Bokach
- Department of Chemistry, Saint Petersburg State University, Universitetsky Pr. 26, 198504 Stary Petergof, Russian Federation
| | - Marina R Tyan
- Department of Chemistry, Saint Petersburg State University, Universitetsky Pr. 26, 198504 Stary Petergof, Russian Federation
| | - Vadim Yu Kukushkin
- Department of Chemistry, Saint Petersburg State University, Universitetsky Pr. 26, 198504 Stary Petergof, Russian Federation
| | - 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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12
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Xu D, Min Y, Cheng Q, Shi H, Wei K, Arnesano F, Natile G, Liu Y. Chemical and cellular investigations of trans-ammine-pyridine-dichlorido-platinum(II), the likely metabolite of the antitumor active cis-diammine-pyridine-chorido-platinum(II). J Inorg Biochem 2013; 129:15-22. [DOI: 10.1016/j.jinorgbio.2013.07.040] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2013] [Revised: 07/30/2013] [Accepted: 07/30/2013] [Indexed: 11/25/2022]
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13
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Wilson JJ, Lippard SJ. Synthetic methods for the preparation of platinum anticancer complexes. Chem Rev 2013; 114:4470-95. [PMID: 24283498 DOI: 10.1021/cr4004314] [Citation(s) in RCA: 487] [Impact Index Per Article: 44.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Justin J Wilson
- Department of Chemistry, Massachusetts Institute of Technology , Cambridge, Massachusetts 02139, United States
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14
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Frybortova M, Novakova O, Stepankova J, Novohradsky V, Gibson D, Kasparkova J, Brabec V. Activation of trans geometry in bifunctional mononuclear platinum complexes by a non-bulky methylamine ligand. J Inorg Biochem 2013; 126:46-54. [PMID: 23770803 DOI: 10.1016/j.jinorgbio.2013.05.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2013] [Revised: 05/23/2013] [Accepted: 05/23/2013] [Indexed: 10/26/2022]
Abstract
In order to shed light on the mechanism that underlies activity of bifunctional mononuclear Pt(II) analogs of transplatin we examined in the present work a DNA binding mode of the analog of transplatin, namely trans-[Pt(CH3NH2)2Cl2], in which NH3 groups were replaced only by a small, non-bulky methylamine ligand. This choice was made because we were interested to reveal the role of the bulkiness of the amines used to substitute NH3 in transplatin to produce antitumor-active Pt(II) drug. The results indicate that trans-[Pt(CH3NH2)2Cl2] forms a markedly higher amount of more distorting intrastrand cross-links than transplatin which forms in DNA preferentially less distorting and persisting monofunctional adducts. Also importantly, the accumulation of trans-[Pt(CH3NH2)2Cl2] in tumor cells was considerably greater than that of transplatin and cisplatin. In addition, the results of the present work demonstrate that the replacement of ammine groups by the non-bulky methylamine ligand in the molecule of ineffective transplatin results in a radical enhancement of its activity in tumor cell lines including cisplatin-resistant tumor cells. Thus, activation of the trans geometry in bifunctional mononuclear Pt(II) complexes can be also accomplished by replacement of ammine groups in transplatin by non-bulky methylamine ligands so that it is not limited only to the replacement by relatively bulky and stereochemically more demanding amino ligands.
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Affiliation(s)
- Michaela Frybortova
- Department of Biophysics, Faculty of Science, Palacky University, 17. listopadu 12, CZ-77146 Olomouc, Czech Republic
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15
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Lando DY, Galyuk EN, Chang CL, Hu CK. Temporal behavior of DNA thermal stability in the presence of platinum compounds. Role of monofunctional and bifunctional adducts. J Inorg Biochem 2012; 117:164-70. [DOI: 10.1016/j.jinorgbio.2012.08.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2012] [Revised: 08/24/2012] [Accepted: 08/28/2012] [Indexed: 10/27/2022]
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16
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Mlcouskova J, Kasparkova J, Suchankova T, Komeda S, Brabec V. DNA conformation and repair of polymeric natural DNA damaged by antitumor azolato-bridged dinuclear PtII complex. J Inorg Biochem 2012; 114:15-23. [DOI: 10.1016/j.jinorgbio.2012.04.015] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2012] [Revised: 04/23/2012] [Accepted: 04/24/2012] [Indexed: 11/17/2022]
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17
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Sinisi M, Intini FP, Natile G. Dependence of the Reduction Products of Platinum(IV) Prodrugs upon the Configuration of the Substrate, Bulk of the Carrier Ligands, and Nature of the Reducing Agent. Inorg Chem 2012; 51:9694-704. [DOI: 10.1021/ic300957v] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Marilù Sinisi
- Dipartimento
Farmaco-Chimico, Università degli Studi di Bari “A. Moro”, Via E.
Orabona 4, 70125 Bari, Italy
| | - Francesco P. Intini
- Dipartimento
Farmaco-Chimico, Università degli Studi di Bari “A. Moro”, Via E.
Orabona 4, 70125 Bari, Italy
| | - Giovanni Natile
- Dipartimento
Farmaco-Chimico, Università degli Studi di Bari “A. Moro”, Via E.
Orabona 4, 70125 Bari, Italy
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18
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Antitumor carboplatin is more toxic in tumor cells when photoactivated: enhanced DNA binding. J Biol Inorg Chem 2012; 17:891-8. [DOI: 10.1007/s00775-012-0906-z] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2012] [Accepted: 05/13/2012] [Indexed: 11/27/2022]
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19
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Olivova R, Kasparkova J, Vrana O, Vojtiskova M, Suchankova T, Novakova O, He W, Guo Z, Brabec V. Unique DNA Binding Mode of Antitumor Trinuclear Tridentate Platinum(II) Compound. Mol Pharm 2011; 8:2368-78. [DOI: 10.1021/mp200298g] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Radana Olivova
- Department of Biophysics, Faculty of Science, Palacky University, 17. listopadu 12, CZ-77146 Olomouc,
Czech Republic
- Institute
of Biophysics, Academy of Sciences of the Czech Republic, v.v.i., Kralovopolska 135, CZ-61265 Brno, Czech Republic
| | - Jana Kasparkova
- Institute
of Biophysics, Academy of Sciences of the Czech Republic, v.v.i., Kralovopolska 135, CZ-61265 Brno, Czech Republic
| | - Oldrich Vrana
- Institute
of Biophysics, Academy of Sciences of the Czech Republic, v.v.i., Kralovopolska 135, CZ-61265 Brno, Czech Republic
| | - Marie Vojtiskova
- Institute
of Biophysics, Academy of Sciences of the Czech Republic, v.v.i., Kralovopolska 135, CZ-61265 Brno, Czech Republic
| | - Tereza Suchankova
- Department of Biophysics, Faculty of Science, Palacky University, 17. listopadu 12, CZ-77146 Olomouc,
Czech Republic
- Institute
of Biophysics, Academy of Sciences of the Czech Republic, v.v.i., Kralovopolska 135, CZ-61265 Brno, Czech Republic
| | - Olga Novakova
- Institute
of Biophysics, Academy of Sciences of the Czech Republic, v.v.i., Kralovopolska 135, CZ-61265 Brno, Czech Republic
| | - Weijiang He
- State Key Laboratory of Coordination
Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, PR China
| | - Zijian Guo
- State Key Laboratory of Coordination
Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, PR China
| | - Viktor Brabec
- Institute
of Biophysics, Academy of Sciences of the Czech Republic, v.v.i., Kralovopolska 135, CZ-61265 Brno, Czech Republic
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20
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Michelin RA, Sgarbossa P, Sbovata SM, Gandin V, Marzano C, Bertani R. Chemistry and biological activity of platinum amidine complexes. ChemMedChem 2011; 6:1172-83. [PMID: 21630470 DOI: 10.1002/cmdc.201100150] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2011] [Revised: 04/26/2011] [Indexed: 01/06/2023]
Abstract
Platinum amidine complexes represent a new class of potential antitumor drugs that contain the imino moiety HN=C(sp(2)) bonded to the platinum center. They can be related to the iminoether derivatives, which were recently shown to be the first Pt(II) compounds with a trans configuration endowed with anticancer activity. The chemical and biological properties of platinum amidine complexes, and more generally of platinum imino derivatives, can be rationally modified through suitable synthetic procedures with the aim of improving their cytotoxicity and antitumor activity. The addition of protic nucleophiles to nitriles coordinated to platinum in various oxidation states can offer a wide variety of complexes with chemical, structural, and physical properties specifically tuned for a more efficacious biological response.
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Affiliation(s)
- Rino A Michelin
- Department of Chemical Processes of Engineering, Padova University, Via F. Marzolo 9, 35131 Padova, Italy
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Westendorf AF, Zerzankova L, Salassa L, Sadler PJ, Brabec V, Bednarski PJ. Influence of pyridine versus piperidine ligands on the chemical, DNA binding and cytotoxic properties of light activated trans,trans,trans-[Pt(N3)2(OH)2(NH3)(L)]. J Inorg Biochem 2011; 105:652-62. [DOI: 10.1016/j.jinorgbio.2011.01.003] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2010] [Revised: 01/03/2011] [Accepted: 01/07/2011] [Indexed: 12/21/2022]
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Alberto ME, Russo N. Methionineligand selectively promotes monofunctional adducts between trans-EE platinum anticancer drug and guanine DNA base. Chem Commun (Camb) 2011; 47:887-9. [DOI: 10.1039/c0cc03605f] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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23
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Kostrhunova H, Vrana O, Suchankova T, Gibson D, Kasparkova J, Brabec V. Different Features of the DNA Binding Mode of Antitumor cis-Amminedichlorido(cyclohexylamine)platinum(II) (JM118) and Cisplatin in Vitro. Chem Res Toxicol 2010; 23:1833-42. [DOI: 10.1021/tx1002904] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Hana Kostrhunova
- Institute of Biophysics, Academy of Sciences of the Czech Republic, v.v.i., CZ-61265 Brno, Czech Republic, Department of Experimental Physics, Faculty of Sciences, Palacky University, 17. listopadu 12, 77146 Olomouc, Czech Republic, and Department of Medicinal Chemistry and Natural Products, School of Pharmacy, The Hebrew University of Jerusalem, Jerusalem 91120, Israel
| | - Oldrich Vrana
- Institute of Biophysics, Academy of Sciences of the Czech Republic, v.v.i., CZ-61265 Brno, Czech Republic, Department of Experimental Physics, Faculty of Sciences, Palacky University, 17. listopadu 12, 77146 Olomouc, Czech Republic, and Department of Medicinal Chemistry and Natural Products, School of Pharmacy, The Hebrew University of Jerusalem, Jerusalem 91120, Israel
| | - Tereza Suchankova
- Institute of Biophysics, Academy of Sciences of the Czech Republic, v.v.i., CZ-61265 Brno, Czech Republic, Department of Experimental Physics, Faculty of Sciences, Palacky University, 17. listopadu 12, 77146 Olomouc, Czech Republic, and Department of Medicinal Chemistry and Natural Products, School of Pharmacy, The Hebrew University of Jerusalem, Jerusalem 91120, Israel
| | - Dan Gibson
- Institute of Biophysics, Academy of Sciences of the Czech Republic, v.v.i., CZ-61265 Brno, Czech Republic, Department of Experimental Physics, Faculty of Sciences, Palacky University, 17. listopadu 12, 77146 Olomouc, Czech Republic, and Department of Medicinal Chemistry and Natural Products, School of Pharmacy, The Hebrew University of Jerusalem, Jerusalem 91120, Israel
| | - Jana Kasparkova
- Institute of Biophysics, Academy of Sciences of the Czech Republic, v.v.i., CZ-61265 Brno, Czech Republic, Department of Experimental Physics, Faculty of Sciences, Palacky University, 17. listopadu 12, 77146 Olomouc, Czech Republic, and Department of Medicinal Chemistry and Natural Products, School of Pharmacy, The Hebrew University of Jerusalem, Jerusalem 91120, Israel
| | - Viktor Brabec
- Institute of Biophysics, Academy of Sciences of the Czech Republic, v.v.i., CZ-61265 Brno, Czech Republic, Department of Experimental Physics, Faculty of Sciences, Palacky University, 17. listopadu 12, 77146 Olomouc, Czech Republic, and Department of Medicinal Chemistry and Natural Products, School of Pharmacy, The Hebrew University of Jerusalem, Jerusalem 91120, Israel
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Li C, Li Z, Sletten E, Arnesano F, Losacco M, Natile G, Liu Y. Methionine Can Favor DNA Platination bytrans-Coordinated Platinum Antitumor Drugs. Angew Chem Int Ed Engl 2009; 48:8497-500. [DOI: 10.1002/anie.200902948] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Li C, Li Z, Sletten E, Arnesano F, Losacco M, Natile G, Liu Y. Methionine Can Favor DNA Platination bytrans-Coordinated Platinum Antitumor Drugs. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200902948] [Citation(s) in RCA: 7] [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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Abstract
Substitution of NH(3) by a range of amines in trans-[PtCl(2)(NH(3))(2)] produces compounds with cytotoxicity significantly improved over the parent transplatin and in many cases equivalent to that of cisplatin. This microreview summarizes the chemistry and biology of trans-platinum compounds containing principally planar amines and succinctly reviews the current status of anticancer relevance of the trans-platinum geometry. The nature of bifunctional DNA adducts (intrastrand, interstrand) is remarkably dependent on the nature of the amine. Further, the stability of monofunctional adducts allows for competitive production of DNA-protein crosslinks and overall the results suggest that the trans-platinum chemotype may offer significant potential for design of selective DNA-protein crosslinking agents. A subset of proteins known to bind to DNA modified by trans-platinum is that comprised of zinc fingers - model studies show the potential for formation of heteronuclear thiolate-bridged species as precedent for zinc displacement from the biomolecule.
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Affiliation(s)
- Sheena M Aris
- Department of Chemistry, Virginia Commonwealth University 1001 W. Main St., Richmond VA 23284-2006
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Cytotoxic trans-oriented iminoether platinum complexes – Kinetics of binding to DNA oligonucleotides determined by 15N NMR spectroscopy. Inorganica Chim Acta 2009. [DOI: 10.1016/j.ica.2008.01.041] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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28
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Brancolini G, Di Felice R. Electronic Properties of Metal-Modified DNA Base Pairs. J Phys Chem B 2008; 112:14281-90. [DOI: 10.1021/jp806419t] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Giorgia Brancolini
- National Research Center on nanoStructures and bioSystems at Surfaces (S3) of INFM-CNR, Via Campi 213/A, 41100 Modena, Italy
| | - Rosa Di Felice
- National Research Center on nanoStructures and bioSystems at Surfaces (S3) of INFM-CNR, Via Campi 213/A, 41100 Modena, Italy
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Intini FP, Pellicani RZ, Boccarelli A, Sasanelli R, Coluccia M, Natile G. Synthesis, Characterization, and In Vitro Antitumor Activity of New Amidineplatinum(II) Complexes Obtained by Addition of Ammonia to Coordinated Acetonitrile. Eur J Inorg Chem 2008. [DOI: 10.1002/ejic.200800632] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Mackay FS, Woods JA, Heringová P, Kašpárková J, Pizarro AM, Moggach SA, Parsons S, Brabec V, Sadler PJ. A potent cytotoxic photoactivated platinum complex. Proc Natl Acad Sci U S A 2007; 104:20743-8. [PMID: 18093923 PMCID: PMC2410072 DOI: 10.1073/pnas.0707742105] [Citation(s) in RCA: 256] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2007] [Indexed: 12/13/2022] Open
Abstract
We show by x-ray crystallography that the complex trans, trans, trans-[Pt(N(3))(2)(OH)(2)(NH(3))(py)] (1) contains an octahedral Pt(IV) center with almost linear azido ligands. Complex 1 is remarkably stable in the dark, even in the presence of cellular reducing agents such as glutathione, but readily undergoes photoinduced ligand substitution and photoreduction reactions. When 1 is photoactivated in cells, it is highly toxic: 13-80 x more cytotoxic than the Pt(II) anticancer drug cisplatin, and ca. 15 x more cytotoxic toward cisplatin-resistant human ovarian cancer cells. Cisplatin targets DNA, and DNA platination levels induced in HaCaT skin cells by 1 were similar to those of cisplatin. However, cisplatin forms mainly intrastrand cis diguanine cross-links on DNA between neighboring nucleotides, whereas photoactivated complex 1 rapidly forms unusual trans azido/guanine, and then trans diguanine Pt(II) adducts, which are probably mainly intrastrand cross-links between two guanines separated by a third base. DNA interstrand and DNA-protein cross-links were also detected. Importantly, DNA repair synthesis on plasmid DNA platinated by photoactivated 1 was markedly lower than for cisplatin or its isomer transplatin (an inactive complex). Single-cell electrophoresis experiments also demonstrated that the DNA damage is different from that induced by cisplatin or transplatin. Cell death is not solely dependent on activation of the caspase 3 pathway, and, in contrast to cisplatin, p53 protein did not accumulate in cells after photosensitization of 1. The trans diazido Pt(IV) complex 1 therefore has remarkable properties and is a candidate for use in photoactivated cancer chemotherapy.
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Affiliation(s)
- Fiona S. Mackay
- *School of Chemistry, University of Edinburgh, West Mains Road, Edinburgh EH9 3JJ, United Kingdom
| | - Julie A. Woods
- Photobiology Unit, Department of Dermatology, University of Dundee, Ninewells Hospital and Medical School, Dundee DD1 9SY, United Kingdom
| | - Pavla Heringová
- Institute of Biophysics, Academy of Sciences of the Czech Republic, Královopolská 135, CZ-61265 Brno, Czech Republic; and
| | - Jana Kašpárková
- Institute of Biophysics, Academy of Sciences of the Czech Republic, Královopolská 135, CZ-61265 Brno, Czech Republic; and
| | - Ana M. Pizarro
- *School of Chemistry, University of Edinburgh, West Mains Road, Edinburgh EH9 3JJ, United Kingdom
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, United Kingdom
| | - Stephen A. Moggach
- *School of Chemistry, University of Edinburgh, West Mains Road, Edinburgh EH9 3JJ, United Kingdom
| | - Simon Parsons
- *School of Chemistry, University of Edinburgh, West Mains Road, Edinburgh EH9 3JJ, United Kingdom
| | - Viktor Brabec
- Institute of Biophysics, Academy of Sciences of the Czech Republic, Královopolská 135, CZ-61265 Brno, Czech Republic; and
| | - Peter J. Sadler
- *School of Chemistry, University of Edinburgh, West Mains Road, Edinburgh EH9 3JJ, United Kingdom
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, United Kingdom
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32
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Sbovata SM, Bettio F, Mozzon M, Bertani R, Venzo A, Benetollo F, Michelin RA, Gandin V, Marzano C. Cisplatinum and Transplatinum Complexes with Benzyliminoether Ligands; Synthesis, Characterization, Structure−Activity Relationships, and In Vitro and In Vivo Antitumor Efficacy. J Med Chem 2007; 50:4775-84. [PMID: 17713897 DOI: 10.1021/jm070426p] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
New benzyliminoether derivatives [PtCl2{N(H)=C(OMe)CH2Ph}2] of cis (1a, 1b) and trans (2a, 2b) geometry were prepared and characterized by means of elemental analysis, multinuclear NMR and FT-IR techniques, and X-ray crystallography; this latter was carried out for 1b. The cytotoxic properties of these new platinum(II) complexes were evaluated in terms of cell growth inhibition against a panel of different types of human cancer cell lines. cis-[PtCl2{E-N(H)=C(OMe)CH2Ph}2] (1a) was significantly more potent than cisplatin against all tumor cell lines tested, showing IC50 values from about 2- to 17-fold lower than the reference compound. Chemosensitivity tests performed on cisplatin-sensitive and -resistant cell lines have demonstrated that complex 1a is able to overcome cisplatin resistance. Analyzing the mechanism by which complex 1a led to cell death, we have found that it induced apoptosis in a dose-dependent manner, accompanied by the activation of caspase-3. The in vivo studies carried out using two transplantable tumor models (L1210 leukemia and Lewis lung carcinoma) showed that derivative 1a induced a remarkable antitumor activity in both tumor models, as measured by prolonged survival and reduced tumor mass compared to control groups.
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Affiliation(s)
- Silvia Mazzega Sbovata
- Department of Chemical Processes of Engineering, University of Padova, Via F. Marzolo 9, 35131 Padova, Italy
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Sasanelli R, Boccarelli A, Giordano D, Laforgia M, Arnesano F, Natile G, Cardellicchio C, Capozzi MAM, Coluccia M. Platinum complexes can inhibit matrix metalloproteinase activity: platinum-diethyl[(methylsulfinyl)methyl]phosphonate complexes as inhibitors of matrix metalloproteinases 2, 3, 9, and 12. J Med Chem 2007; 50:3434-41. [PMID: 17583333 DOI: 10.1021/jm061435l] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Platinum complexes able to inhibit matrix metalloproteinases (MMPs) through a noncompetitive mechanism are reported for the first time in this study. [PtCl2(SMP)] and [Pt(dimethylmalonato)(SMP)], characterized by the bisphosphonate-analogue ligand diethyl[(methylsulfinyl)methyl]phosphonate (SMP), are slight inhibitors of MMP-2 (IC50 = 258 +/- 38 and 123 +/- 14 microM, respectively) but markedly inhibit MMP-9 (IC50 = 35.5 +/- 6 and 17 +/- 4 microM), MMP-3 (IC50 = 5.3 +/- 2.9 and 4.4 +/- 2.2 microM), and MMP-12 (IC50 = 10.8 +/- 3 and 6.2 +/- 1.8 microM). In contrast, cisplatin, carboplatin, and the SMP ligand are inactive, and the bisphosphonate clodronate shows a broad-spectrum inhibitory activity in the high micromolar range (mean IC50 > 200 microM). These results, along with mechanistic investigations (DNA interaction and tumor cell growth inhibition), demonstrate that ligand modifications of platinum compounds can be exploited to target also biological substrates distinct from DNA.
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Affiliation(s)
- Rossella Sasanelli
- Dipartimento di Scienze Biomediche e Oncologia Umana, Università di Bari, 70124 Bari, Italy
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34
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Brabec V, Christofis P, Slámová M, Kostrhunová H, Nováková O, Najajreh Y, Gibson D, Kaspárková J. DNA interactions of new cytotoxic tetrafunctional dinuclear platinum complex trans,trans-[{PtCl2(NH3)}2(piperazine)]. Biochem Pharmacol 2007; 73:1887-900. [PMID: 17400194 DOI: 10.1016/j.bcp.2007.03.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2007] [Revised: 02/09/2007] [Accepted: 03/02/2007] [Indexed: 11/28/2022]
Abstract
A new tetrafunctional dinuclear platinum complex trans,trans-[{PtCl2(NH3)}2(piperazine)] with sterically rigid linking group was designed, synthesized and characterized. In this novel molecule, the DNA-binding features of two classes of the platinum compounds with proven antitumor activity are combined, namely trans oriented bifunctional mononuclear platinum complexes with a heterocyclic ligand and polynuclear platinum complexes. DNA-binding mode of this new complex was analyzed by various methods of molecular biology and biophysics. The complex coordinates DNA in a unique way and interstrand and intrastrand cross-links are the predominant lesions formed in DNA in cell-free media and in absence of proteins. An intriguing aspect of trans,trans-[{PtCl2(NH3)}2(piperazine)] is that, using a semi-rigid linker, interstrand cross-linking is diminished relative to other dinuclear platinum complexes with flexible linking groups and lesions that span several base pairs, such as tri- and tetrafunctional adducts, become unlikely. In addition, in contrast to the inability of trans,trans-[{PtCl2(NH3)}2(piperazine)] to cross-link two DNA duplexes, the results of the present work convincingly demonstrate that this dinuclear platinum complex forms specific DNA lesions which can efficiently cross-link proteins to DNA. The results substantiate the view that trans,trans-[{PtCl2(NH3)}2(piperazine)] or its analogues could be used as a tool for studies of DNA properties and their interactions or as a potential antitumor agent. The latter view is also corroborated by the observation that trans,trans-[{PtCl2(NH3)}2(piperazine)] is a more effective cytotoxic agent than cisplatin against human tumor ovarian cell lines.
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Affiliation(s)
- Viktor Brabec
- Institute of Biophysics, Academy of Sciences of the Czech Republic, Kralovopolska 135, CZ-61265 Brno, Czech Republic
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35
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Marzano C, Sbovata SM, Bettio F, Michelin RA, Seraglia R, Kiss T, Venzo A, Bertani R. Solution behaviour and biological activity of bisamidine complexes of platinum(II). J Biol Inorg Chem 2007; 12:477-93. [PMID: 17211629 DOI: 10.1007/s00775-006-0202-x] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2006] [Accepted: 12/03/2006] [Indexed: 11/25/2022]
Abstract
A series of platinum(II) amidine complexes were previously prepared with the aim of obtaining a new class of platinum-based antitumour drugs. This series includes compounds of the type cis--[PtCl2{Z-HN=C(NHMe)Me}2] and trans-[PtCl2{Z-HN=C(NHMe)Me}2] (1, 2), cis-[PtCl2{E-HN=C(NMe2)Me}2] and trans-[PtCl2{E-HN=C(NMe2)Me}2] (3, 4), cis-[PtCl2{Z-HN=C(NHMe)Ph}2] and trans-[PtCl2{Z-HN=C(NHMe)Ph}2] (5, 6), and cis-[PtCl2{HN=C(NMe2)Ph}2] and trans-[PtCl2{HN=C(NMe2)Ph}2] (7, 8). The reactions with dimethyl sulfoxide were studied for complexes 5-8; the formation of cationic species containing coordinated dimethyl sulfoxide was demonstrated by NMR experiments and electrospray ionization mass spectrometry. In this work, the amidine platinum(II) complexes were tested for their in vitro cytotoxicity on a panel of various human cancer cell lines. The results indicate that the benzamidine complex 8 was the most effective derivative also circumventing acquired cisplatin resistance as demonstrated by chemosensitivity tests performed on cisplatin-sensitive and cisplatin-resistant cell lines. The studies concerning the cellular DNA damage on both parental chemosensitive and resistant sublines suggest for the new trans-amidine complex a different mechanism of action compared with that exhibited by cisplatin.
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Affiliation(s)
- C Marzano
- Department of Pharmaceutical Sciences, University of Padova, Via F. Marzolo 5, 35131, Padua, Italy
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36
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Heringova P, Woods J, Mackay FS, Kasparkova J, Sadler PJ, Brabec V. Transplatin Is Cytotoxic When Photoactivated: Enhanced Formation of DNA Cross-Links. J Med Chem 2006; 49:7792-8. [PMID: 17181161 DOI: 10.1021/jm0606692] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
It is well-known that although cisplatin, [cis-[PtCl2(NH3)2], is an anticancer drug, its isomer transplatin is not cytotoxic. Here we show that transplatin is almost as cytotoxic as cisplatin when treated cells (human keratinocytes HaCaT and ovarian cancer A2780 cells) are irradiated with UVA light (50 min, 1.77 mW cm-2). Chemical studies show that light activates both chloride ligands of transplatin, and experiments on pSP73 plasmid DNA and a 23 base-pair DNA duplex show that irradiation can greatly enhance formation of interstrand cross-links and of DNA-protein cross-links (which are not formed in the dark). Comet assays showed that UVA irradiation of transplatin-treated cells resulted in an increased inhibition of H2O2-induced DNA migration, supporting the conclusion that the cytotoxicity of photoactivated transplatin is mainly due to formation of DNA interstrand and DNA-protein cross-links.
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Affiliation(s)
- Pavla Heringova
- Institute of Biophysics, Academy of Sciences of the Czech Republic, Královopolská 135, CZ-61265 Brno, Czech Republic
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Kaspárková J, Nováková O, Vrána O, Intini F, Natile G, Brabec V. Molecular Aspects of Antitumor Effects of a New Platinum(IV) Drug. Mol Pharmacol 2006; 70:1708-19. [PMID: 16896071 DOI: 10.1124/mol.106.027730] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The new platinum(IV) complex cis,trans,cis-[PtCl(2)(CH(3)COO)(2)-(NH(3))(1-adamantylamine)] [adamplatin(IV)] seems promising for the perspective application in therapy of corresponding tumors. It is therefore of great interest to understand details of mechanisms underlying its biological efficacy. Cellular uptake of the drug, alterations in the target DNA induced by platinum drugs along with processing of platinum-induced damage to DNA and drug inactivation by sulfur-containing compounds belong to major pharmacological factors affecting antitumor effects of platinum compounds. We examined in the present work the significance of these factors in the mechanism of antitumor effects of adamplatin(IV) and compared the results with those of the parallel studies performed with "conventional" cisplatin. The results show that deactivation of adamplatin(IV) by sulfur-containing compounds (such as glutathione or metallothioneins) is likely to play a less significant role in the mechanism of resistance of tumor cells to adamplatin(IV) in contrast to the role of these reactions in the effects of cisplatin. Moreover, the treatment of tumor cells with adamplatin(IV) does not result in DNA modifications that would be markedly different from those produced by cisplatin. In contrast, the effects of other factors, such as enhanced accumulation of the drug in cells, strong inhibition of DNA polymerization by these adducts, lowered DNA repair, and DNA-protein cross-linking are different from the effects of these factors in the mechanism underlying activity of cisplatin. Hence, the differences between effects of adamplatin(IV) and cisplatin observed in the present work on molecular level may help understand the unique activity of adamplatin(IV).
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Affiliation(s)
- Jana Kaspárková
- Institute of Biophysics, Academy of Sciences of the Czech Republic, Kralovopolska 135, CZ-61265 Brno, Czech Republic
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Gao X, Wang X, Ding J, Lin L, Li Y, Guo Z. Antitumor active monofunctional platinum(II) complexes: Synthesis, structural characterization and reactivity towards biomolecules. INORG CHEM COMMUN 2006. [DOI: 10.1016/j.inoche.2006.04.011] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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39
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Petrlova J, Potesil D, Zehnalek J, Sures B, Adam V, Trnkova L, Kizek R. Cisplatin electrochemical biosensor. Electrochim Acta 2006. [DOI: 10.1016/j.electacta.2006.03.077] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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40
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Ramos-Lima FJ, Vrána O, Quiroga AG, Navarro-Ranninger C, Halámiková A, Rybnícková H, Hejmalová L, Brabec V. Structural characterization, DNA interactions, and cytotoxicity of new transplatin analogues containing one aliphatic and one planar heterocyclic amine ligand. J Med Chem 2006; 49:2640-51. [PMID: 16610807 DOI: 10.1021/jm0602514] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We report in the present work new analogues of clinically ineffective transplatin in which one ammine group was replaced by aliphatic and the other by a planar heterocyclic ligand, namely trans-[PtCl(2)(isopropylamine)(3-(hydroxymethyl)-pyridine)], 1, and trans-[PtCl(2)(isopropylamine)(4-(hydroxymethyl)-pyridine)], 2. The new compounds, in comparison with parent transplatin, exhibit radically enhanced activity in tumor cell lines both sensitive and in particular resistant to cisplatin. Concomitantly, the DNA binding mode of 1 and 2 compared to parent transplatin and other antitumor analogues of transplatin in which only one ammine group was replaced is also different. The results also suggest that the reactions of glutathione and metallothionein-2 with compounds 1 and 2 do not play a crucial role in their overall biological effects. In addition, the monofunctional adducts of 1 and 2 are quenched by glutathione considerably less than the adducts of transplatin, which may potentiate cytotoxic effects of these new platinum complexes.
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Affiliation(s)
- Francisco J Ramos-Lima
- Institute of Biophysics, Academy of Sciences of the Czech Republic, CZ-61265 Brno, Czech Republic
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41
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Boccarelli A, Giordano D, Natile G, Coluccia M. Differential processing of antitumour-active and antitumour-inactive trans platinum compounds by SKOV-3 ovarian cancer cells. Biochem Pharmacol 2006; 72:280-92. [PMID: 16765322 DOI: 10.1016/j.bcp.2006.04.021] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2005] [Revised: 04/10/2006] [Accepted: 04/18/2006] [Indexed: 11/21/2022]
Abstract
In order to compare the mechanistic properties of the antitumour-active trans platinum complex trans-[PtCl(2){Z-HN=C(OMe)Me}(NH(3))] (trans-Z) and of the antitumour-inactive isomer of cisplatin trans-[PtCl(2)(NH(3))(2)] (trans-DDP), the differential processing of the two compounds by SKOV-3 ovarian cancer cells has been investigated. trans-Z and trans-DDP enter cells with the same efficacy, but trans-Z shows a two-fold higher affinity for cellular DNA. The treatment with trans-DDP IC(50) determines an initial and transient cytostatic effect, paralleled by a moderate increase of apoptosis and by sequential and reversible arrests in S and G(2)/M phases of cell-cycle. In contrast, trans-Z IC(50) determines an initial cytotoxic effect, a more persistent and marked increase of apoptosis, and a more marked and prolonged arrest in S and G(2)/M phases of the cell-cycle. Treatment-induced gene expression modifications indicate that phenotypic effects of trans-DDP are driven by an initial and transient up-regulation of some genes related to cell-cycle checkpoint and arrest networks, whereas the more dramatic phenotypic effects of trans-Z are driven by a persistent up-regulation of more numerous genes involved in cell-cycle checkpoint and arrest networks, and in genome stability and DNA repair. Therefore, molecular and cellular events have been identified which are produced by trans-Z but not by trans-DDP, and which likely represent the mechanistic basis of antitumour activity of trans-Z in the SKOV-3 system.
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Affiliation(s)
- Angelina Boccarelli
- Department Biomedical Sciences and Human Oncology, University of Bari, Piazza Giulio Cesare 11, 70124 Bari, Italy
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42
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Stehlíková K, Kaspárková J, Nováková O, Martínez A, Moreno V, Brabec V. Recognition of DNA modified by trans-[PtClNH(4-hydroxymethylpyridine)] by tumor suppressor protein p53 and character of DNA adducts of this cytotoxic complex. FEBS J 2006; 273:301-14. [PMID: 16403018 DOI: 10.1111/j.1742-4658.2005.05061.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
trans-[PtCl(2)NH(3)(4-Hydroxymethylpyridine)] (trans-PtHMP) is an analogue of clinically ineffective transplatin, which is cytotoxic in the human leukemia cancer cell line. As DNA is a major pharmacological target of antitumor platinum compounds, modifications of DNA by trans-PtHMP and recognition of these modifications by active tumor suppressor protein p53 were studied in cell-free media using the methods of molecular biology and biophysics. Our results demonstrate that the replacement of the NH(3) group in transplatin by the 4-hydroxymethylpyridine ligand affects the character of DNA adducts of parent transplatin. The binding of trans-PtHMP is slower, although equally sequence-specific. This platinum complex also forms on double-stranded DNA stable intrastrand and interstrand cross-links, which distort DNA conformation in a unique way. The most pronounced conformational alterations are associated with a local DNA unwinding, which was considerably higher than those produced by other bifunctional platinum compounds. DNA adducts of trans-PtHMP also reduce the affinity of the p53 protein to its consensus DNA sequence. Thus, downstream effects modulated by recognition and binding of p53 protein to DNA distorted by trans-PtHMP and transplatin are not likely to be the same. It has been suggested that these different effects may contribute to different antitumor effects of these two transplatinum compounds.
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Affiliation(s)
- Kristýna Stehlíková
- Institute of Biophysics, Academy of Sciences of the Czech Republic, Brno, Czech Republic
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Brabec V, Kasparkova J. Modifications of DNA by platinum complexes. Relation to resistance of tumors to platinum antitumor drugs. Drug Resist Updat 2005; 8:131-46. [PMID: 15894512 DOI: 10.1016/j.drup.2005.04.006] [Citation(s) in RCA: 301] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2005] [Revised: 04/11/2005] [Accepted: 04/11/2005] [Indexed: 11/26/2022]
Abstract
The importance of platinum drugs in cancer chemotherapy is underscored by the clinical success of cisplatin [cis-diamminedichloroplatinum(II)] and its analogues and by clinical trials of other, less toxic platinum complexes that are active against resistant tumors. The antitumor effect of platinum complexes is believed to result from their ability to form various types of adducts with DNA. Nevertheless, drug resistance can occur by several ways: increased drug efflux, drug inactivation, alterations in drug target, processing of drug-induced damage, and evasion of apoptosis. This review focuses on mechanisms of resistance and sensitivity of tumors to conventional cisplatin associated with DNA modifications. We also discuss molecular mechanisms underlying resistance and sensitivity of tumors to the new platinum compounds synthesized with the goal to overcome resistance of tumors to established platinum drugs. Importantly, a number of new platinum compounds were designed to test the hypothesis that there is a correlation between the extent of resistance of tumors to these agents and their ability to induce a certain kind of damage or conformational change in DNA. Hence, information on DNA-binding modes, as well as recognition and repair of DNA damage is discussed, since this information may be exploited for improved structure-activity relationships.
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Affiliation(s)
- Viktor Brabec
- Institute of Biophysics, Academy of Sciences of the Czech Republic, Kralovopolska 135, CZ-61265 Brno, Czech Republic.
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Najajreh Y, Kasparkova J, Marini V, Gibson D, Brabec V. Structural characterization and DNA interactions of new cytotoxic transplatin analogues containing one planar and one nonplanar heterocyclic amine ligand. J Biol Inorg Chem 2005; 10:722-31. [PMID: 16208494 DOI: 10.1007/s00775-005-0024-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2005] [Accepted: 07/19/2005] [Indexed: 10/25/2022]
Abstract
trans-Diaminedicholoroplatinum(II) complexes with one planar and one non-planar heterocyclic amine ligand were designed as new potential antitumor drugs. The X-ray crystallographic structures of trans-[PtCl2(4-picoline)(piperidine)] and trans-[PtCl2(4-picoline)(piperazine)].HCl revealed that the piperidine and piperazine ligands bind to the platinum through the equatorial position and that the ligands adopt the chair conformation. The nonplatinated amine of the piperazine can form hydrogen bonds with atoms that are approximately 7.5 A away from the Pt binding site. DNA is considered a major pharmacological target of platinum compounds. Hence, to expand the database correlating structural features of platinum compounds and DNA distortions induced by these compounds, which may facilitate identification of more effective anticancer platinum drugs, we describe the DNA binding mode in a cell-free medium of trans-[PtCl2(4-picoline)(piperidine)] and trans-[PtCl2(4-picoline)(piperazine)].HCl. Interestingly, the overall impact of the replacement of the second ammine group in transplatin by the heterocyclic ligands appears to change the character of the global conformational changes induced in DNA towards that induced by cisplatin. The clinical ineffectiveness of the parent transplatin has been proposed to be also associated with its reduced capability to form bifunctional adducts in double-helical DNA. The results of the present work support the view that replacement of both ammine groups of transplatin by heterocyclic ligands enhances cytotoxicity probably due to the marked enhancement of the stability of intrastrand cross-links in double-helical DNA.
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Affiliation(s)
- Yousef Najajreh
- Department of Medicinal Chemistry and Natural Products, School of Pharmacy, The Hebrew University of Jerusalem, P.O.Box 12065, Jerusalem, 91120, Israel
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Iijima H, Patrzyc HB, Dawidzik JB, Budzinski EE, Cheng HC, Freund HG, Box HC. Measurement of DNA adducts in cells exposed to cisplatin. Anal Biochem 2004; 333:65-71. [PMID: 15351281 DOI: 10.1016/j.ab.2004.06.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2004] [Indexed: 10/26/2022]
Abstract
The two main cisplatin-induced DNA lesions, G--G and A--G, have been measured in cells exposed to the drug. (G--G and A--G denote the intrastrand bifunctional adducts formed between adjacent purine bases.) It has proven feasible, using liquid chromatography-tandem mass spectrometry (LC-MS/MS), observe the G--G and A--G lesions in mouse fibroblast cells exposed for 1 h to a 120 microM concentration of cisplatin. After extraction of the DNA from the cells, the lesions were enzymatically isolated from the DNA in the form of modified dinucleoside monophosphates with the phosphodiester bond intact. MS/MS detection of the modified dinucleoside monophosphates in the negative ion mode manifests two transitions; from the negative ion to the loss of one NH(3) group and from the ion less one NH(3) group to the loss of both NH(3) groups. The multiple reaction monitoring capability of LC-MS/MS was used to measure the three most abundant isotopes of the two main lesions for both transitions of each lesion (i.e., 12 MS/MS values in toto). Ion currents could be detected for all 12 pairs of MS/MS values in the DNA from exposed cells. Although this protocol results in some overlap of MS/MS values between the two lesions, a slight difference in elution times clearly distinguishes between them.
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Intini FP, Boccarelli A, Francia VC, Pacifico C, Sivo MF, Natile G, Giordano D, De Rinaldis P, Coluccia M. Platinum complexes with imino ethers or cyclic ligands mimicking imino ethers: synthesis, in vitro antitumour activity, and DNA interaction properties. J Biol Inorg Chem 2004; 9:768-80. [PMID: 15241660 DOI: 10.1007/s00775-004-0572-x] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2004] [Accepted: 06/14/2004] [Indexed: 11/25/2022]
Abstract
Both trans- and cis-[PtCl(2)(NH(3))(L)] compounds have been synthesized, L representing either the imino ether HN=C(OMe)Me having a Z or E configuration at the C=N double bond, or the cyclic ligands N = C(OMe)CH2CH2CH2 and N = C(Me)OCH2CH2 (compounds 1-4 for trans geometry and 5-8 for cis geometry, respectively). The cyclic ligands mimic the imino ether ligands but, differently from imino ethers, cannot undergo change of configuration. In a panel of human tumor cells, trans compounds inhibit growth much more than transplatin. Moreover, compound 1 in most cases is less active than 2, and 1 and 2 are less active than 3 and 4, respectively. For cis compounds with imino ethers, the activity is reduced (5) or unaffected (6) with respect to cisplatin. Moreover, unlike trans compounds, substitution of cyclic ligands (7,8) for imino ethers (5,6) generally decreases the activity. This determines, for compounds with cyclic ligands, an unusual inversion of the cis geometry requirement for activity of platinum(II) species. Importantly,1-4 and 5-8 partially circumvent the multifocal cisplatin resistance of A2780cisR cells, and 1-4 also overcome resistance from reduced uptake of 41McisR cells. DNA interaction regioselectivity of 1-4 and 5-8 is not substantially modified with respect to transplatin and cisplatin. However, both imino ethers and cyclic ligands slow down the DNA interstrand cross-link reaction, ( E)-HN=C(OMe)Me and N = C(Me)OCH2CH2 decreasing also its extent. Therefore, DNA interaction of 1-4 and 5-8 appears to be characterized by persistent monoadducts (1-4), and by monoadducts and/or intrastrand cross-links structurally different from those of cisplatin (5-8). This study demonstrates that ligand configuration modulates the activity of both trans and cis compounds, and supports the development of platinum drugs based on their coordination chemistry to combat cisplatin resistance.
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Affiliation(s)
- Francesco P Intini
- Dipartimento Farmaco-Chimico, University of Bari, via E. Orabona 4, 70125 Bari, Italy
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Novakova O, Kasparkova J, Malina J, Natile G, Brabec V. DNA-protein cross-linking by trans-[PtCl(2)(E-iminoether)(2)]. A concept for activation of the trans geometry in platinum antitumor complexes. Nucleic Acids Res 2004; 31:6450-60. [PMID: 14602903 PMCID: PMC275558 DOI: 10.1093/nar/gkg863] [Citation(s) in RCA: 88] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The structure-pharmacological activity relationships generally accepted for antitumor platinum compounds stressed the necessity for the cis-[PtX(2)(amine)(2)] structure while the trans-[PtX(2)(amine)(2)] structure was considered inactive. However, more recently, several trans-platinum complexes have been identified which are potently toxic, antitumor-active and demonstrate activity distinct from that of conventional cisplatin (cis-[PtCl(2)(NH(3))(2)]). We have shown in the previous report that the replacement of ammine ligands by iminoether in transplatin (trans-[PtCl(2)(NH(3))(2)]) results in a marked enhancement of its cytotoxicity so that it is more cytotoxic than its cis congener and exhibits significant antitumor activity, including activity in cisplatin-resistant tumor cells. In addition, we have also shown previously that this new trans compound (trans-[PtCl(2)(E-iminoether)(2)]) forms mainly monofunctional adducts at guanine residues on DNA, which is generally accepted to be the cellular target of platinum drugs. In order to shed light on the mechanism underlying the antitumor activity of trans-[PtCl(2)(E-iminoether)(2)] we examined oligodeoxyribonucleotide duplexes containing a single, site-specific, monofunctional adduct of this transplatin analog by the methods of molecular biophysics. The results indicate that major monofunctional adducts of trans-[PtCl(2)(E-iminoether)(2)] locally distort DNA, bend the DNA axis by 21 degrees toward the minor groove, are not recognized by HMGB1 proteins and are readily removed from DNA by nucleotide excision repair (NER). In addition, the monofunctional adducts of trans-[PtCl(2)(E-iminoether)(2)] readily cross-link proteins, which markedly enhances the efficiency of this adduct to terminate DNA polymerization by DNA polymerases in vitro and to inhibit removal of this adduct from DNA by NER. It is suggested that DNA-protein ternary cross-links produced by trans-[PtCl(2)(E-iminoether)(2)] could persist considerably longer than the non-cross-linked monofunctional adducts, which would potentiate toxicity of this antitumor platinum compound toward tumor cells sensitive to this drug. Thus, trans-[PtCl(2)(E-iminoether)(2)] represents a quite new class of platinum antitumor drugs in which activation of trans geometry is associated with an increased efficiency to form DNA-protein ternary cross-links thereby acting by a different mechanism from 'classical' cisplatin and its analogs.
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Affiliation(s)
- Olga Novakova
- Institute of Biophysics, Academy of Sciences of the Czech Republic, CZ-61265 Brno
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Prokop R, Kasparkova J, Novakova O, Marini V, Pizarro AM, Navarro-Ranninger C, Brabec V. DNA interactions of new antitumor platinum complexes with trans geometry activated by a 2-metylbutylamine or sec-butylamine ligand. Biochem Pharmacol 2004; 67:1097-109. [PMID: 15006546 DOI: 10.1016/j.bcp.2003.11.001] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2003] [Accepted: 11/03/2003] [Indexed: 11/26/2022]
Abstract
The global modification of mammalian and plasmid DNAs by novel platinum compounds, trans-[PtCl(2)(NH(3))(Am)], where Am=2 -methylbutylamine or sec-butylamine was investigated in cell-free media using various biochemical and biophysical methods. These modifications were analyzed in the context of the activity of these new compounds in several tumor cell lines including those resistant to antitumor cis-diamminedichloroplatinum(II) (cisplatin). The results showed that the replacement of one amine group by 2-methylbutylamine or sec-butylamine ligand in clinically ineffective trans-diamminedichloroplatinum(II) (transplatin) resulted in a radical enhancement of its activity in tumor cell lines so that they are more cytotoxic than cisplatin and exhibited significant antitumor activity including activity in cisplatin-resistant tumor cells. Importantly, this replacement also markedly altered DNA binding mode of transplatin and reduced the efficiency of repair systems to remove the adducts of the new analogues from DNA. The results support the view that one strategy to activate trans geometry in bifunctional platinum(II) compounds including circumvention of resistance to cisplatin may consist in a chemical modification of the ineffective transplatin which results in an increased efficiency to form DNA interstrand cross-links.
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Affiliation(s)
- Radim Prokop
- Institute of Biophysics, Academy of Sciences of the Czech Republic, CZ-61265 Brno, Czech Republic.
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Zhang J, Wang X, Tu C, Lin J, Ding J, Lin L, Wang Z, He C, Yan C, You X, Guo Z. Monofunctional platinum complexes showing potent cytotoxicity against human liver carcinoma cell line BEL-7402. J Med Chem 2003; 46:3502-7. [PMID: 12877588 DOI: 10.1021/jm020593j] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Three novel Pt(II) complexes [PtL(1)'Cl] I (L(1)' = glycine-N'-8-quinolylamide), [PtL(2)'Cl] II (L(2)' = l-alanine-N'-8-quinolylamide), and [PtL(3)Cl] III [L(3) = N-(tert-butoxycarbonyl)-l-methionine-N'-8-quinolylamide] have been synthesized and characterized. The crystal structure of complexes II and III showed that the ligands are three-coordinated with only one Cl(-) as the leaving group. Complex II crystallized in the monoclinic system with space group P2(1), a = 9.502(2) A, b = 4.724(1) A, c = 14.800(3) A, while complex III crystallized in the orthorhombic system with space group P2(1)2(1)2(1), a = 5.441(1) A, b = 12.978(3) A, c = 29.438(6) A. These complexes have been tested against a wide range of tumor cell lines including BEL-7402, HCT-116, SPC-A4, MOLT-4, P388, HL-60, A-549, SGC-7901, MKN-28, and HO-8910. Complex III is highly cytotoxic against the HCT-116 (IC(50) = 0.38 microM), SPC-A4 (IC(50) = 0.43 microM), BEL-7402 (IC(50) = 0.43 microM), and MOLT-4 (IC(50) = 0.61 microM) cell lines. The cell line most sensitive to III is human liver carcinoma cell line BEL-7402, which has a response rate of 75.1% at 6.6 x 10(-7) M, nearly 6 times higher than that of cisplatin.
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Affiliation(s)
- Junyong Zhang
- State Key Laboratory of Coordination Chemistry, Coordination Chemistry Institute, Nanjing University, Nanjing 210093, P. R. China
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