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N-heterocyclic carbene-metal complexes as bio-organometallic antimicrobial and anticancer drugs, an update (2015–2020). Future Med Chem 2020; 12:2239-2275. [DOI: 10.4155/fmc-2020-0175] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
N-heterocyclic carbenes (NHCs) are organic compounds that typically mimic the chemical properties of phosphines. NHCs have made a significant impact on the field of coordination and organometallic chemistry because they are easy to prepare and handle and because of their versatility and stability. Importantly, the physicochemical properties of NHCs can be easily fine-tuned by simple variation of substituents on the nitrogen atoms. Over the past few years, various NHC–metal complexes have been extensively used as metal-based drug candidates and catalysts (homogeneous or heterogeneous) for various applications. To help assist future work with these compounds, this review provides a thorough review on the latest information involving some biomedical applications of NHC–metal complexes. Specifically, this article focuses on recent advances in the design, synthesis, characterization and biomedical applications (e.g., antimicrobial and anticancer activity) of various NHC–metal complexes (metal: silver, gold, palladium, rhodium, ruthenium, iridium and platinum) covering work published from 2015 to 2020. It is hoped that the promising discoveries to date will help accelerate studies on the encouraging potential of NHC–metal complexes as a class of effective therapeutic agents.
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Gwee EH, Seeger ZL, Appadoo DRT, Wood BR, Izgorodina EI. Influence of DFT Functionals and Solvation Models on the Prediction of Far-Infrared Spectra of Pt-Based Anticancer Drugs: Why Do Different Complexes Require Different Levels of Theory? ACS OMEGA 2019; 4:5254-5269. [PMID: 31459697 PMCID: PMC6649127 DOI: 10.1021/acsomega.8b03455] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Accepted: 02/25/2019] [Indexed: 05/06/2023]
Abstract
Computational modeling was applied to far-infrared (FIR) spectra of Pt-based anticancer drugs to study the hydrolysis of these important molecules. Here, we present a study that investigates the influence of different factors-basis sets on non-Pt atoms, relativistic effective core potentials (RECPs) on the Pt atom, density functional theory (DFT) functionals, and solvation models-on the prediction of FIR spectra of two Pt-based anticancer drugs, cisplatin and carboplatin. Geometry optimizations and frequency calculations were performed with a range of functionals (PBE, PBE0, M06-L, and M06-2X), Dunning's correlation-consisted basis sets (VDZ, VTZ, aVDZ, and aVTZ), RECPs (VDZ-pp, VTZ-pp, aVDZ-pp, and aVTZ-pp), and solvation models (IEFPCM, CPCM, and SMD). The best combination of the basis set/DFT functional/solvation model was identified for each anticancer drug by comparing with experimentally available FIR spectra. Different combinations were established for cisplatin and carboplatin, which was rationalized by means of the partial atomic charge scheme, ChelpG, that was utilized to study the charge transfer between the Pt ion and ligands in both cisplatin and carboplatin.
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Affiliation(s)
- Eunice
S. H. Gwee
- Monash
Computational Chemistry Group, School of Chemistry and Centre for Biospectroscopy,
School of Chemistry, Monash University, 17 Rainforest Walk, Clayton, Victoria 3800, Australia
| | - Zoe L. Seeger
- Monash
Computational Chemistry Group, School of Chemistry and Centre for Biospectroscopy,
School of Chemistry, Monash University, 17 Rainforest Walk, Clayton, Victoria 3800, Australia
| | | | - Bayden R. Wood
- Monash
Computational Chemistry Group, School of Chemistry and Centre for Biospectroscopy,
School of Chemistry, Monash University, 17 Rainforest Walk, Clayton, Victoria 3800, Australia
| | - Ekaterina I. Izgorodina
- Monash
Computational Chemistry Group, School of Chemistry and Centre for Biospectroscopy,
School of Chemistry, Monash University, 17 Rainforest Walk, Clayton, Victoria 3800, Australia
- E-mail:
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Chattopadhyay A, Dey A, Karmakar P, Ray S, Nandi D, Sarkar(Sain) R, Ghosh AK. Mechanistic Aspects of Ligand Substitution on the Cis-Diaqua-Chloro-Tris(Dimethyl Sulfoxide)Ruthenium(II) Complex by Some Sulfur-Containing Bioactive Ligands in Aqueous Medium. PROGRESS IN REACTION KINETICS AND MECHANISM 2018. [DOI: 10.3184/146867818x15319903829191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The synthesis and interactions of the cis-diaqua-chloro-tris(dimethyl sulfoxide)ruthenium(II) complex with selected sulfur-containing ligands such as 2-thiouracil, glutathione and L-cysteine have been studied by UV-Vis spectrophotometry in aqueous medium at pH 4.5. From experimental data it is clear that all three reactions proceed via two steps: the first one being a rate-limiting ligand-dependent replacement of one water molecule, followed by a ligand-independent ring closure step with the expulsion of the second water molecule. The substituted products have been characterised by Job's method, FTIR spectroscopy and electrospray ionisation mass spectrometry. Activation parameters (Δ H≠ and Δ S≠) and thermodynamic parameters (Δ H0 and Δ S0, from the temperature dependence of the outer-sphere association equilibrium constant) are presented. Consistent with the experimental findings, an associative interchange mechanism is proposed.
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Affiliation(s)
- Animesh Chattopadhyay
- Department of Chemistry, The University of Burdwan, Burdwan 713104, West Bengal, India
| | - Anwesha Dey
- Department of Chemistry, The University of Burdwan, Burdwan 713104, West Bengal, India
| | - Parnajyoti Karmakar
- Government General Degree College at Kalna-1, Muragacha, Medgachi, Burdwan-713405, West Bengal, India
| | - Sumon Ray
- Department of Chemistry, The University of Burdwan, Burdwan 713104, West Bengal, India
| | - Debabrata Nandi
- Department of Chemistry, The University of Burdwan, Burdwan 713104, West Bengal, India
| | - Roshni Sarkar(Sain)
- Department of Chemistry, The University of Burdwan, Burdwan 713104, West Bengal, India
| | - Alak K Ghosh
- Department of Chemistry, The University of Burdwan, Burdwan 713104, West Bengal, India
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Apoptosis in vitro in PC-12 cells induced by an organometallic Ir(III) complex through a ROS-mediated mitochondrial pathway. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2017.07.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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5
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Aderibigbe BA. Polymeric Prodrugs Containing Metal-Based Anticancer Drugs. J Inorg Organomet Polym Mater 2015. [DOI: 10.1007/s10904-015-0220-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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6
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Mondal S, Ray S, Chattopadhyay A, Nandi D, Sarkar (Sain) R, Ghosh AK. Kinetic and Mechanistic Studies on the Interaction of Azide Ion with cis-diaqua-bis(bipyridyl) ruthenium(II) Complex and Hydroxopentaaqua Rhodium(III) complex in Aqueous Medium. PROGRESS IN REACTION KINETICS AND MECHANISM 2014. [DOI: 10.3184/146867814x14043731662864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The interaction of the aqua ligand substitution from cis-diaqua-bis(bipyridyl) ruthenium(II)complex([Ru(bpy)2(H2O)2]2+) and hydroxopentaaqua rhodium(III) complex ([Rh(H2O)5(OH)]+2) by azide has been studied spectrophotometrically as a function of [substrate complex], [ligand] and temperature at pH 4.5 for the first complex and pH 4.3 for the second complex, at constant ionic strength. The substitution reaction for both complexes shows two consecutive steps. Both steps are [ligand]-dependent. The activation parameters for both steps were evaluated. Thermodynamic parameters calculated from the temperature dependence of the outer-sphere association equilibrium constants are also consistent with an associative mode of activation. The products of the reactions have been characterised by IR, and ESI-mass spectroscopic analysis.
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Affiliation(s)
- Subala Mondal
- Department of Chemistry, The University of Burdwan, Burdwan 713104, India
| | - Sumon Ray
- Department of Chemistry, The University of Burdwan, Burdwan 713104, India
| | | | - Debabrata Nandi
- Department of Chemistry, The University of Burdwan, Burdwan 713104, India
| | | | - Alak K Ghosh
- Department of Chemistry, The University of Burdwan, Burdwan 713104, India
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Karmakar P, Ray S, Mandal A, Mondal S, Mallick S, Bera BK, Ghosh AK. Mechanistic and Kinetic Investigations on the Interaction of Model Platinum(II) Complex With Ligands of Biological Significance in Reference to the Antitumor Activity. ACTA ACUST UNITED AC 2013. [DOI: 10.1080/15533174.2013.763272] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
| | - Sumon Ray
- a Department of Chemistry , The University of Burdwan , Burdwan , India
| | - Arup Mandal
- a Department of Chemistry , The University of Burdwan , Burdwan , India
| | - Subala Mondal
- a Department of Chemistry , The University of Burdwan , Burdwan , India
| | - Subhasis Mallick
- a Department of Chemistry , The University of Burdwan , Burdwan , India
| | - Biplab K. Bera
- a Department of Chemistry , The University of Burdwan , Burdwan , India
| | - Alak K. Ghosh
- a Department of Chemistry , The University of Burdwan , Burdwan , India
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Ghosh GK, Misra K, Baskim M, Linert W, Moi SC. Kinetics and Mechanism of the Interaction of Di-μ-hydroxobis(1,10-phenanthroline)dipalladium(II) Perchlorate with Thioglycolic Acid and Glutathione in Aqueous Solution. J SOLUTION CHEM 2013. [DOI: 10.1007/s10953-013-9973-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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9
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Platinum and Palladium Polyamine Complexes as Anticancer Agents: The Structural Factor. ACTA ACUST UNITED AC 2013. [DOI: 10.1155/2013/287353] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Since the introduction of cisplatin to oncology in 1978, Pt(II) and Pd(II) compounds have been intensively studied with a view to develop the improved anticancer agents. Polynuclear polyamine complexes, in particular, have attracted special attention, since they were found to yield DNA adducts not available to conventional drugs (through long-distance intra- and interstrand cross-links) and to often circumvent acquired cisplatin resistance. Moreover, the cytotoxic potency of these polyamine-bridged chelates is strictly regulated by their structural characteristics, which renders this series of compounds worth investigating and their synthesis being carefully tailored in order to develop third-generation drugs coupling an increased spectrum of activity to a lower toxicity. The present paper addresses the latest developments in the design of novel antitumor agents based on platinum and palladium, particularly polynuclear chelates with variable length aliphatic polyamines as bridging ligands, highlighting the close relationship between their structural preferences and cytotoxic ability. In particular, studies by vibrational spectroscopy techniques are emphasised, allowing to elucidate the structure-activity relationships (SARs) ruling anticancer activity.
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Karmakar P, Ray S, Nandi D, Mandal A, Mondal S, Mallick S, Bera BK, Ghosh AK. Kinetic Studies on Interaction of Platinum(II) Complexes with an ‘S’ Containing Ligand in Aqueous Medium. J SOLUTION CHEM 2013. [DOI: 10.1007/s10953-013-9969-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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11
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Kinetic studies on substitution of cis-diaqua-chloro-tris-(dimethyl sulphoxide)-ruthenium(II) complex with some dipeptides in aqueous medium. J CHEM SCI 2012. [DOI: 10.1007/s12039-012-0274-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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12
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Bera BK, Mondal S, Mallick S, Mandal A, Karmakar P, Ghosh AK. Kinetic Study of the Interaction of Three Glycine-Containing Dipeptides with Hydroxopentaaquarhodium(III) Ion in Aqueous Medium. J SOLUTION CHEM 2012. [DOI: 10.1007/s10953-012-9828-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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13
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Mallick S, Mandal A, Bera BK, Karmakar P, Mondal S, Ghosh AK. Kinetic and Mechanistic Study of the Interaction of Diethyldithiocarbamate Anion with Diaquaethylenediamineplatinum(Ii) Ion in Aqueous Medium. PROGRESS IN REACTION KINETICS AND MECHANISM 2012. [DOI: 10.3184/146867812x13242290723273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The interaction of diethyldithiocarbamate (Et2DTC) with diaquaethylenediamineplatinum(II) has been studied spectrophotometrically in aqueous medium as a function of [substrate complex], [ligand], temperature and pH at constant ionic strength. The reaction proceeds via rapid outer-sphere association complex formation followed by two consecutive steps: the first is ligand dependent and second is assigned to intramolecular ring closure. The low enthalpy and negative entropy of activation indicate an associative mode of activation for both steps.
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Affiliation(s)
- Subhasis Mallick
- Department of Chemistry, The University of Burdwan, Burdwan-713104, West Bengal, India
| | - Arup Mandal
- Department of Chemistry, The University of Burdwan, Burdwan-713104, West Bengal, India
| | - Biplab K. Bera
- Department of Chemistry, The University of Burdwan, Burdwan-713104, West Bengal, India
| | - Pamajyoti Karmakar
- Department of Chemistry, The University of Burdwan, Burdwan-713104, West Bengal, India
| | - Subala Mondal
- Department of Chemistry, The University of Burdwan, Burdwan-713104, West Bengal, India
| | - Alak K Ghosh
- Department of Chemistry, The University of Burdwan, Burdwan-713104, West Bengal, India
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14
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Mallick S, Mondal S, Mandal A, Bera BK, Karmakar P, Ghosh AK. Kinetic study of the interaction of three glycine-containing dipeptides with diaquaethylenediamineplatinum(II) in aqueous medium. INT J CHEM KINET 2011. [DOI: 10.1002/kin.20577] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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15
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Karmakar P, Mallick S, Mondal S, Bera BK, Mandal A, Mukhopadhyay SK, Ghosh AK. Kinetics and mechanism of the interaction of adenosine with cis-diaqua(cis-1,2-diaminocyclohexane)platinum(II) perchlorate in aqueous medium. INT J CHEM KINET 2011. [DOI: 10.1002/kin.20549] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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16
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Patil S, Dietrich K, Deally A, Gleeson B, Müller-Bunz H, Paradisi F, Tacke M. Synthesis, Cytotoxicity and Antibacterial Studies of Novel Symmetrically and Nonsymmetrically 4-(Methoxycarbonyl)benzyl-Substituted N-Heterocyclic Carbene-Silver Acetate Complexes. Helv Chim Acta 2010. [DOI: 10.1002/hlca.201000310] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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17
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Mechanistic aspects of ligand substitution on cis-diaqua(cis-1,2-diaminocyclohexane)platinum(II) by Glycine-l-Leucine. TRANSIT METAL CHEM 2010. [DOI: 10.1007/s11243-010-9411-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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18
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Karmakar P, Bera BK, Barik KL, Mukhopadhyay SK, Ghosh AK. Kinetics and mechanism of the interaction of DL-penicillamine with cis-diaqua(cis-1,2-diaminocyclohexane)platinum(II) perchlorate in aqueous medium. J COORD CHEM 2010. [DOI: 10.1080/00958972.2010.498910] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Parnajyoti Karmakar
- a Department of Chemistry , The University of Burdwan , Burdwan–713104, West Bengal, India
| | - Biplab K. Bera
- a Department of Chemistry , The University of Burdwan , Burdwan–713104, West Bengal, India
| | - Kanai L. Barik
- b Department of Paediatrics , Burdwan Medical College , Burdwan–713104, West Bengal, India
| | - Sudip K. Mukhopadhyay
- c Department of Chemistry , Asansol B.B. College , Asansol–713303, West Bengal, India
| | - Alak K. Ghosh
- a Department of Chemistry , The University of Burdwan , Burdwan–713104, West Bengal, India
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Bera BK, Mallick S, Mandal A, Karmakar P, Datta AK, Ghosh AK. Kinetics and mechanism of the reaction of hydroxopentaaquarhodium(III) ion with l-Arginine in aqueous solution. TRANSIT METAL CHEM 2010. [DOI: 10.1007/s11243-010-9361-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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20
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Khokhar AR, Deng Y. Synthesis and Characterization of Platinum(II) and Platinum(IV) Complexes Containing R-(-)-Cyclohexylethylamine. J COORD CHEM 2009. [DOI: 10.1080/00958979209409209] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Abdul R. Khokhar
- a Department of Medical Oncology, Box 52 , The University of Texas , M. D. Anderson Cancer Center, Houston , Texas , 77030 , USA
| | - Yuanjian Deng
- a Department of Medical Oncology, Box 52 , The University of Texas , M. D. Anderson Cancer Center, Houston , Texas , 77030 , USA
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Mukhopadhyay SK. Kinetics and mechanism of aqua ligand substitution from cis-diaqua(cis-1,2-diaminocyclohexane)platinum(II)perchlorate by diethyldithiocarbamate anion in aqueous medium. TRANSIT METAL CHEM 2008. [DOI: 10.1007/s11243-008-9105-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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22
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Kinetic and mechanistic studies on the interaction between glycylglycine and cis-diaqua-bis-(bipyridine)-ruthenium(II) complex in aqueous medium. TRANSIT METAL CHEM 2007. [DOI: 10.1007/s11243-006-0152-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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23
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Singh RV, Biyala MK. Structural Studies with Antimicrobial and Antifertility Activity of a Monofunctional Bidentate Ligand with its Boron(III), Palladium(II), and Platinum(II) Complexes. PHOSPHORUS SULFUR 2007. [DOI: 10.1080/10426500500330869] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- R. V. Singh
- a Department of Chemistry , University of Rajasthan , Jaipur , India
| | - M. K. Biyala
- a Department of Chemistry , University of Rajasthan , Jaipur , India
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González-Vadillo AM, Alvarez-Valdés A, Moneo V, Blanco F, Díaz RG, Carnero A, Navarro-Ranninger C. Structure-activity relationship of new trans-platinum(II) and (IV) complexes with cyclohexylamine. Interference with cell cycle progression and induction of cell death. J Inorg Biochem 2006; 101:551-8. [PMID: 17257684 DOI: 10.1016/j.jinorgbio.2006.11.015] [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: 10/04/2006] [Revised: 11/21/2006] [Accepted: 11/22/2006] [Indexed: 10/23/2022]
Abstract
The new trans-Pt complexes, derived from trans-[PtCl2(amine)(dimethylamine)] and trans-[PtCl2(OH)2(amine)(dimethylamine)], were synthesized and characterized studying the structure-activity relationship and testing their antiproliferative activity. Their evaluation as cytotoxic agents towards different cancer and normal cell lines is presented. These compounds are active in a panel of tumor cell lines at low micromolar range. Compounds seems to be more active in tumoral than in normal primary human cell lines. Cytotoxic activity is closely related to the amine ligand. Cyclohexylamine ligand was the most active among the amine-ligands tested. Cytotoxic activity correlates with an increase in annexin V positive cells indicating an apoptotic effect of the compounds. Mechanistically, the antitumor activity correlates with a blockade of the cell cycle in S phase and a complete abolishment of G2/M checkpoint arrest suggesting physical interaction of compound with DNA inhibiting S phase transition.
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Affiliation(s)
- Ana M González-Vadillo
- Departamento de Química Inorgánica, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain
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Khan SRA, Khokhar AR. Synthesis and Characterization of New CIS-1,4-Diaminocyclohexane and Piperidine Platinum(II) Complexes Containing Disubstituted Sulfide Groups. J COORD CHEM 2006. [DOI: 10.1080/00958970008055138] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- S. Rounaq Ali Khan
- a Department of Clinical Investigation, Box 52 , The University of Texas M. D. Anderson Cancer Center , 1515 Holcombe Boulevard, Houston, TX, 77030, USA
| | - Abdul R. Khokhar
- a Department of Clinical Investigation, Box 52 , The University of Texas M. D. Anderson Cancer Center , 1515 Holcombe Boulevard, Houston, TX, 77030, USA
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Kinetics and mechanism of the interaction of thioglycolic acid with [(H2O)(tap)2RuORu(tap)2(H2O)]2+ ion at physiological pH. TRANSIT METAL CHEM 2006. [DOI: 10.1007/s11243-006-0083-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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27
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Dodoff NI, Trendafilova NS. CONFORMATIONAL ANALYSIS OF 1,l′-(METHYLPHOSPHINYLIDENE): BIS(METHANAMINE) AND ITS PLATINUM(II) COMPLEX. PHOSPHORUS SULFUR 2006. [DOI: 10.1080/10426509708031568] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Nicolay I. Dodoff
- a Institute of Molecular Biology, Bulgarian Academy of Sciences , Acad. G. Bonchev Street, Block 21, 1113 , Sofia , Bulgaria
| | - Natasha S. Trendafilova
- b Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences , Acad. G. Bonchev Street, Block 11, 1113 , Sofia , Bulgaria
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Shamsuddin S, Khokhar AR. SYNTHESIS AND CRYSTAL STRUCTURE OF A NEW ANTITUMOR AGENT: [Pt(cis-1,4-DIAMINOCYCLOHEXANE)(1,1-CYCLOBUTANEDICARBOXYLATE)]. J COORD CHEM 2006. [DOI: 10.1080/00958979408024265] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- S. Shamsuddin
- a Department of Clinical Investigation , The University of Texas M.D. Anderson Cancer Center , Houston , Texas , 77030
| | - Abdul R. Khokhar
- a Department of Clinical Investigation , The University of Texas M.D. Anderson Cancer Center , Houston , Texas , 77030
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Mukherjee A, De Krishna. A Kinetic and Mechanistic Study on Substitution of Aqua Ligands from cis-diaqua-bis-(bipyridyl)-ruthenium(II) Complex by Thiosemicarbazide in Aqueous Medium. TRANSIT METAL CHEM 2005. [DOI: 10.1007/s11243-005-4828-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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30
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Mukhopadhyay SK, Ghosh AK. Kinetic and mechanistic studies on the interaction of thymidine with the hydroxopentaaquarhodium(III) ion. TRANSIT METAL CHEM 2005. [DOI: 10.1007/s11243-004-1909-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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31
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Bera SK, Chandra SK, De GS. Kinetics of substitution of aqua ligands fromcis-diaqua (ethylenediamine)platinum(II) perchlorate byL-asparagine in aqueous medium. INT J CHEM KINET 2003. [DOI: 10.1002/kin.10114] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Samochocka K, Fokt I, Anulewicz-Ostrowska R, Przewloka T, Mazurek AP, Fuks L, Lewandowski W, Kozerski L, Bocian W, Bednarek E, Lewandowska H, Sitkowski J, Priebe W. Platinum(ii) and palladium(ii) complexes with methyl 3,4-diamino-2,3,4,6-tetradeoxy-α-l-lyxo-hexopyranoside. Dalton Trans 2003. [DOI: 10.1039/b212681h] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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33
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Monsù Scolaro L, Mazzaglia A, Romeo A, Romeo R. Synthetic procedures to monomethyl-platinum(II) complexes containing nitrogen ligands of biological relevance. J Inorg Biochem 2002; 91:237-45. [PMID: 12121781 DOI: 10.1016/s0162-0134(02)00389-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The complex trans-bis(dimethylsulfoxide)chloromethylplatinum(II) (1) is fairly soluble in water, where it undergoes multiple equilibria involving the formation of geometrically distinct [Pt(H(2)O)(DMSO)Cl(CH(3))] aqua-species. On reacting an aqueous solution of 1 with monodentate nitrogen donor ligands L, such as pyridines or amines, two well distinct patterns of behavior can be recognized: (i) a single stage fast substitution of one DMSO by the entering ligand, yielding a complex of the type trans(C,N)-[Pt(DMSO)(L)Cl(CH(3))] which contains four different groups coordinated to the metal and which undergoes a slow conversion into its cis-isomer, (ii) a double substitution affording cationic complex ions of the type cis-[Pt(L)(2)(DMSO)(CH(3))](+). When this latter reaction is carried out using sterically hindered ligands, slow rotation of the bulk ligand around the Pt[bond]N bond allows for the identification of head-to-head and head-to-tail rotamers in solution, through (1)H NMR spectrometry. The addition of chloride anion to 1 leads to the anionic species cis-[Pt(DMSO)Cl(2)(CH(3))](-), where a molecule of DMSO still remains coordinated to the metal center, despite its quite fast rate of ligand exchange (k(exch) with free DMSO=12+/-1 s(-1)). The reaction of complex 1 with bidentate ligands, such as ethylenediamine (en) or simple amino acids, leads to the cationic species [Pt(en)(DMSO)(CH(3))](+) or to the neutral [Pt(DMSO)(N[bond]O)(CH(3))], (where N[bond]-O[double bond]GlyO(-), AlaO(-)).
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Affiliation(s)
- Luigi Monsù Scolaro
- Dipartimento di Chimica Inorganica, Chimica Analitica e Chimica Fisica, Universitá di Messina, and Istituto per lo Studio dei Materiali Nanostrutturati (ISMN-CNR), Sezione di Messina, Italy.
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34
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Yang P, Meng XL, Yue LJ, Wei YB. Study on the amount of binding of anti-tumor metal complexes to different target sites of dGMP using trans-[en(2)Os(eta2-H(2))(CF(3)SO(3))](CF(3)SO(3)) in a competitive mode. J Inorg Biochem 2002; 89:248-54. [PMID: 12062129 DOI: 10.1016/s0162-0134(02)00380-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
In order to investigate the binding sites and the amount of binding of a number of anti-tumor metal complexes (cisplatin, Cp(2)TiCl(2) and (CH(3))(2)SnCl(2)) to target molecule DNA mononucleotides in aqueous solution, a 1H NMR recognition probe, trans-[en(2)Os(eta2-H(2))(CF(3)SO(3))](CF(3)SO(3)), was used in a competitive mode. The minimum percentages of binding of anti-tumor metal complexes to different sites of dGMP were also determined.
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Affiliation(s)
- Pin Yang
- Institute of Molecular Science, Shanxi University, Taiyuan 030006, PR China.
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35
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Asara JM, Hess JS, Lozada E, Dunbar KR, Allison J. Evidence for Binding of Dirhodium Bis-Acetate Units to Adjacent GG and AA Sites on Single-Stranded DNA. J Am Chem Soc 1999. [DOI: 10.1021/ja992800j] [Citation(s) in RCA: 72] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- John M. Asara
- Contribution from the Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, and The Cancer Center, Michigan State University, East Lansing, Michigan 48824
| | - Jennifer S. Hess
- Contribution from the Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, and The Cancer Center, Michigan State University, East Lansing, Michigan 48824
| | - Elizabeth Lozada
- Contribution from the Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, and The Cancer Center, Michigan State University, East Lansing, Michigan 48824
| | - Kim R. Dunbar
- Contribution from the Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, and The Cancer Center, Michigan State University, East Lansing, Michigan 48824
| | - John Allison
- Contribution from the Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, and The Cancer Center, Michigan State University, East Lansing, Michigan 48824
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36
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Studies of molecular recognition mechanism in supramolecular system of ruthenium(II) polypyridyl complexes and DNA. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 1999. [DOI: 10.1016/s0928-4931(99)00105-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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37
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38
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Yam VWW, Lo KKW. Recent advances in utilization of transition metal complexes and lanthanides as diagnostic tools. Coord Chem Rev 1999. [DOI: 10.1016/s0010-8545(98)00262-8] [Citation(s) in RCA: 224] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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39
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Prater ME, Mindiola DJ, Ouyang X, Dunbar KR. A quadruply-bonded dirhenium complex bridged by two N1/N6 adenate ligands. INORG CHEM COMMUN 1998. [DOI: 10.1016/s1387-7003(98)00127-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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40
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Zhao G, Lin H, Yu P, Sun H, Zhu S, Chen Y. Comparison of the mode of action of a dinuclear platinum complex containing a pyridine derivative with its monomeric analog. Chem Biol Interact 1998; 116:19-29. [PMID: 9877198 DOI: 10.1016/s0009-2797(98)00074-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
The DNA binding and interstrand cross-linking properties of the dinuclear platinum complex [¿cis-Pt(NH3)2Cl¿2bpsu](NO3)2 (bpsu is 4,4'-dipyridyl sulfide) (II) and the mononuclear complex [cis-Pt(NH3)2Cl(4-methylpyridine)]NO3 (I) were compared with those of [¿cis-Pt(NH3)2Cl¿2H2N(CH2)4NH2](NO3)2 (III) in order to understand the mode of action of complexes I and II. Both compound I and compound II caused significantly different changes of conformation in poly(dG-dC) x poly(dG-dC) than compound III did. Studies of DNA binding, interstrand cross-linking and fluorescence assay suggest that compound I monofunctionally binds to DNA and compound II bifunctionally binds to DNA, that the dinuclear platinum complex II more efficiently interacts with DNA compared to its monomeric analog, and that platinum I and II complexes both interact with DNA in a non-intercalative mode. All the results indicate that the mode of action of the dinuclear complex II is different from that of the mononuclear complex I.
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Affiliation(s)
- G Zhao
- Department of Chemistry, Nankai University, Tianjin, PR China
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41
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Cafeo G, Lo Passo C, MonsùScolaro L, Pernice I, Romeo R. Synthesis of binuclear platinum(II) organometallic complexes as potential cross-linking reagents. Inorganica Chim Acta 1998. [DOI: 10.1016/s0020-1693(97)06080-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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42
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González VM, Pérez JM, Alonso C. The berenil ligand directs the DNA binding of the cytotoxic drug Pt-berenil. J Inorg Biochem 1997; 68:283-7. [PMID: 9397576 DOI: 10.1016/s0162-0134(97)00111-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
To determine the affinity towards DNA sequences of novel antitumor drugs in comparison with their parental compounds may lead to the design of new analogous drugs with improved antitumor activity. Thus, the affinities of Pt-berenil towards different DNA sites relative to cis-DDP and berenil drugs were analysed using DNase I footprinting and restriction endonuclease analysis. The data show that the Pt-berenil drug inhibits the cutting activity of Hind III enzyme to the same extent as the berenil ligand. In contrast, inhibition by Pt-berenil of the cutting activity of Bam HI enzyme is significantly lower than that of cis-DDP. These results indicate that although the cis-Pt(II) centres of Pt-berenil maintain certain affinity toward G + C regions, which are the main binding sequences of cis-DDP, however, the berenil ligand seems to direct the Pt-berenil molecule towards A + T regions, which are the binding sequences preferred by berenil. In fact, 1H- and 195Pt-NMR spectra of Pt-berenil:nucleoside complexes show that Pt-berenil not only covalently binds to N7 of guanosine but also to N1/N7 of adenosine.
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Affiliation(s)
- V M González
- Centro de Biología Molecular Severo Ochoa (CSIC-UAM), Facultad de Ciencias, Universidad Autónoma de Madrid, Spain
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43
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[trans-en2Os (ŋ-H2)]2 + as an1H NMR probe for the coordination of some anticancer metal complexes to deoxyguanotide. ACTA ACUST UNITED AC 1997. [DOI: 10.1007/bf02875425] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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44
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Zamora F, Gonz�lez VM, P�rez JM, Masaguer JR, Alonso C, Navarro-Ranninger C. Palladium(II) 4,5-Diphenylimidazole Cyclometalated Complexes: DNA Interaction. Appl Organomet Chem 1997. [DOI: 10.1002/(sici)1099-0739(199706)11:6<491::aid-aoc602>3.0.co;2-f] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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45
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Butour JL, Wimmer S, Wimmer F, Castan P. Palladium(II) compounds with potential antitumour properties and their platinum analogues: a comparative study of the reaction of some orotic acid derivatives with DNA in vitro. Chem Biol Interact 1997; 104:165-78. [PMID: 9212782 DOI: 10.1016/s0009-2797(97)00022-7] [Citation(s) in RCA: 89] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Ethidium bromide was used to study perturbations induced in salmon sperm DNA complexed with a series of platinum and palladium compounds obtained from chloro and orotic acid derivatives as leaving ligands. The antitumoral activity of these compounds against Sarcoma 180 cells grafted intraperitoneally into mice is correlated with their capacity to interact with DNA in vitro and to perturb its secondary structure. Nevertheless, among these compounds, [Pt(Dach)(3-methyl-orot)] and [Pt(Dach)(5-fluoro-orot)] do not interact with DNA in vitro and are inactive against Sarcoma 180 cells. This lack of activity originates from the fact that strong chelating properties of the ligand prevent hydrolysis of the compounds which are unable to give rise to aquo species which are the reactive ones. On the other hand, the interaction with DNA is not the only prerequisite in order that a compound be active towards tumour cells. In fact, cis-[Pd(NH3)2Cl2] and cis[Pd(Dach)Cl2] are not antitumoral. It is well known that the former undergoes an inactive trans-conformation and that the two compounds hydrolyse very fast assuming that they interact in vivo with a lot of molecules particularly proteins preventing them to reach the DNA, their pharmacological target. By contrast, [Pd(Dach)(3-methyl-orot)] (T/C = 267%) and [Pd(Dach)(5-fluoro-orot)] (T/C = 270%) display significant antitumour activity.
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Affiliation(s)
- J L Butour
- Institut de Pharmacologie et de Biologie Structurale du CNRS, Toulouse, France
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46
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Gebel T, Lantzsch H, Plessow K, Dunkelberg H. Genotoxicity of platinum and palladium compounds in human and bacterial cells. Mutat Res 1997; 389:183-90. [PMID: 9093382 DOI: 10.1016/s1383-5718(96)00145-3] [Citation(s) in RCA: 91] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Platinum and palladium belong to the group of platinum elements and thus share many chemical properties. Platinum coordination complexes are known to be carcinogenic and genotoxic in mammalian and bacterial cells. However, little is known about palladium genotoxicity. This study compares and evaluates the genotoxic potential of selected platinum and palladium metal salts in mammalian and bacterial cells using the cytokinesis-block micronucleus test (MNT) with human lymphocytes and the bacterial SOS chromotest. Carboplatin, cisplatin(II), transplantin(II), PtCl4(IV), and K2PtCl4(II) caused a significantly elevated genotoxicity in the MNT and the SOS chromotest. The platinum compounds PtCl2(II) and K2PtCl6(IV), and the divalent palladium salts PdCl2(II), K2PdCl4(II), Pd(NH3)2J2(II), Pd(NH3)4Cl2(II), and transpalladium(II) were not genotoxic in the MNT nor in the SOS chromotest. Therefore, evidence for palladium genotoxicity seems to be low in mammalian and bacterial cells.
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Affiliation(s)
- T Gebel
- Medical Institute of General Hygiene and Environmental Health, University of Goettinger, Germany
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47
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Sadiq MF, Zaghal MH. Mutagenic activity of rhodium(III) complexes with 2,2′-biquinoline and 2-(2′-pyridyl)quinoline. Polyhedron 1997. [DOI: 10.1016/s0277-5387(96)00437-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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48
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Pérez JM, González VM, Fuertes MA, Alonso C. Modification of the recognition of restriction sites of plasmid DNA by the antitumor drug Pt-pentamidine. Biochem Pharmacol 1996; 52:851-6. [PMID: 8781502 DOI: 10.1016/0006-2952(96)00351-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The rate of binding of the antineoplastic drugs Pt-pentamidine [(cis-PtCl2)3(pentamidine)3][PtCl4]2 and cis-DDP [cis-diamminedichloroplatimum(II)] to pUC8 DNA, as well as the effect of the binding of these platinum compounds on the cutting effectiveness of Bam HI, Hind III, and Sal I restriction endonucleases, were determined by flameless atomic absorption spectroscopy and gel electrophoresis, respectively. The results show that covalent DNA platination is 12% to 22% lower in DNA: Pt-pentamidine complexes than in DNA: cis-DDP at the same molar rate of platinum/nucleotide, and the number of Pt-pentamidine molecules bound to DNA is significantly lower in Pt-pentamidine: DNA complexes than in cis-DDP: DNA complexes. Although both compounds inhibit Bam HI cleavage of pUC8 DNA, Pt-pentamidine does not prevent the cutting activity of Hind III, in contrast with cis-DDP. Neither cis-DDP nor Pt-pentamidine inhibits the cutting activity of Sal I, whose recognition sequence neighbors the Bam HI and Hind III sites.
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Affiliation(s)
- J M Pérez
- Centro de Biología Molecular Severo Ochoa (CSIC-UAM), Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco, Spain
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49
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Navarro-Ranninger C, López-Solera I, González VM, Pérez JM, Alvarez-Valdés A, Martín A, Raithby PR, Masaguer JR, Alonso C. Cyclometalated Complexes of Platinum and Palladium with N-(4-Chlorophenyl)-α-benzoylbenzylideneamine. In Vitro Cytostatic Activity, DNA Modification, and Interstrand Cross-Link Studies. Inorg Chem 1996. [DOI: 10.1021/ic960050y] [Citation(s) in RCA: 121] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Carmen Navarro-Ranninger
- Departamento de Química Inorgánica and Centro de Biología Molecular “Severo Ochoa”, Facultad de Ciencias, Universidad Autónoma de Madrid, 28049-Madrid, Spain, and Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
| | - Isabel López-Solera
- Departamento de Química Inorgánica and Centro de Biología Molecular “Severo Ochoa”, Facultad de Ciencias, Universidad Autónoma de Madrid, 28049-Madrid, Spain, and Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
| | - Víctor M. González
- Departamento de Química Inorgánica and Centro de Biología Molecular “Severo Ochoa”, Facultad de Ciencias, Universidad Autónoma de Madrid, 28049-Madrid, Spain, and Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
| | - José M. Pérez
- Departamento de Química Inorgánica and Centro de Biología Molecular “Severo Ochoa”, Facultad de Ciencias, Universidad Autónoma de Madrid, 28049-Madrid, Spain, and Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
| | - Amparo Alvarez-Valdés
- Departamento de Química Inorgánica and Centro de Biología Molecular “Severo Ochoa”, Facultad de Ciencias, Universidad Autónoma de Madrid, 28049-Madrid, Spain, and Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
| | - Avelino Martín
- Departamento de Química Inorgánica and Centro de Biología Molecular “Severo Ochoa”, Facultad de Ciencias, Universidad Autónoma de Madrid, 28049-Madrid, Spain, and Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
| | - Paul R. Raithby
- Departamento de Química Inorgánica and Centro de Biología Molecular “Severo Ochoa”, Facultad de Ciencias, Universidad Autónoma de Madrid, 28049-Madrid, Spain, and Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
| | - José R. Masaguer
- Departamento de Química Inorgánica and Centro de Biología Molecular “Severo Ochoa”, Facultad de Ciencias, Universidad Autónoma de Madrid, 28049-Madrid, Spain, and Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
| | - Carlos Alonso
- Departamento de Química Inorgánica and Centro de Biología Molecular “Severo Ochoa”, Facultad de Ciencias, Universidad Autónoma de Madrid, 28049-Madrid, Spain, and Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
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50
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Kratochwil NA, Zabel M, Range KJ, Bednarski PJ. Synthesis and X-ray crystal structure of trans,cis-[Pt(OAc)2I2(en)]: a novel type of cisplatin analog that can be photolyzed by visible light to DNA-binding and cytotoxic species in vitro. J Med Chem 1996; 39:2499-507. [PMID: 8691447 DOI: 10.1021/jm9509105] [Citation(s) in RCA: 82] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
An original approach intended to facilitate the intratumoral activation of Pt(IV) diamines by illumination with visible light to form photolysis products that irreversibly bind to DNA and are cytotoxic to human cancer cells is reported. The novel Pt(IV) complex trans,cis-[Pt(OAc)2I2-(en)] was prepared by the acetylation of trans,cis-[Pt(OH)2I2(en)] with acetic anhydride in CH2-Cl2; trans,cis-[Pt(OH)2I2(en)] was synthesized by oxidation of [PtI2(en)] with 30% aqueous H2O2. trans,cis-[Pt(OAc)2I2(en)] crystallized from methanol as deep-red needles with a = 9.029(4) A, b = 11.443(2) A, c = 12.822(2) A, beta = 95.48(3) degrees, monoclinic space group Cc, and Z = 4. The conformation of the acetato groups around the O-Pt-O axis deviated significantly from the conformation of the acetato groups in the X-ray crystal structure reported for the cis-dichloro analog, which may explain the very different aqueous solubilities of the two compounds. trans,-cis-[Pt(OAc)2I2(en)] and trans,cis-[Pt(OH)2I2(en)] displayed broad ligand-to-metal charge-transfer bands centered at lambda = 389 and 384 nm, respectively (epsilon = 1372 and 1425 M-1 cm-1, respectively), with tailing out to ca. 550 nm. When trans,cis-[Pt(OAc)2I2(en)] was incubated with calf thymus DNA in the absence of light, no covalent binding of Pt to DNA was measurable after 6 h; however, irradiation with light of wavelengths > 375 nm resulted in 63 +/- 13% of the platinum being covalently bound to DNA after 6 h, suggesting that a photoreduction to Pt(II) species took place. Although trans,cis-[Pt(OH)2I2(en)] was also labile to visible light, only 10 +/- 2% DNA platination was observed after 6 h of illumination; however, covalent binding of Pt to DNA took place quantitatively when a reducing agent such as glutathione was added to the photolyzed incubations. These results provide evidence that the photolysis of the trans-dihydroxo analog resulted predominately in the substitution of the iodide ligands for water rather than a reduction of Pt(IV) to Pt(II). When protected from light, trans,cis-[Pt(OAc)2I2-(en)] and trans,cis-[Pt(OH)2I2(en)], both at a concentration of 10 microM, had half-lives of 6.6 +/- 0.5 and 46.8 +/- 8.8 h, respectively, at 37 degrees C in Eagle's minimum essential medium (EMEM) containing 5% fetal calf serum. When irradiated with light lambda(irr) > 375 nm, the half-lives were decreased by 24- and 53-fold for the diacetato- and dihydroxoplatinum(IV) complexes, respectively. Compared to the "dark" control, the in vitro treatment of TCCSUP human bladder cancer cells with trans,cis-[Pt(OAc)2I2(en)] resulted in 35% greater growth inhibitory activity when during the first 1.5 h of drug exposure the cells were irradiated with light lambda irr > 375 nm. The photolysis of trans,cis-[Pt(OH)2I2(en)] with visible light resulted in a 22% enhancement of antiproliferative activity.
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