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Rezaei-Sameti M, Iraji Borojeni Z. Interaction of 5-fluorouracil anticancer drug with nucleobases: insight from DFT, TD-DFT, and AIM calculations. J Biomol Struct Dyn 2022:1-12. [PMID: 35866624 DOI: 10.1080/07391102.2022.2099976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
In this study, the interaction of 5-fluorouracil (5FU) drug with adenine (A), guanine(G), cytosine(C), uracil (U), and thymine (T) nucleobases of DNA and RNA are surveyed at the ωB97XD/LANL2DZ, M06-2X/6-31G (d, p), MPW1PWQ1/6-31G(d, p), PBEPBE/6-31(d, p) and ωB97XD/6-31G(d, p) levels of density functional theory (DFT). The considered complexes of 5FU drug with nucleobases are optimized at the above level of theories. Max Force and RMS of optimization criteria are 0.00035 (Ha), and 0.0003 respectively. From optimized structures, the adsorption energy, thermodynamic parameters in gas and solvent media, quantum theory atom in molecule (QTAIM), electron localized function (ELF), and reduced density gradient (RDG) are calculated at ωB97XD/LANL2DZ and M06-2X/6-31G (d, p) level of DFT theory. The QTAIM, ELF, and RDG results confirm that the nature of bonding between 5FU drug with A, C, G, U, and T nucleobases is electrostatic or hydrogen bond type. The adsorption and thermodynamic energy results demonstrate that the interaction of the 5FU drug with C and G nucleobases is stronger than other nucleobases. The results of this study can be suggested the mechanism of interaction of the 5FU drug with nucleobases of DNA and RNA.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Mahdi Rezaei-Sameti
- Department of Applied Chemistry, Faculty of Science, Malayer University, Malayer, Iran
| | - Zohre Iraji Borojeni
- Department of Applied Chemistry, Faculty of Science, Malayer University, Malayer, Iran
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2
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Lioli E, Kollia E, Markaki P, Mitsopoulou CA. Antifungal and antiaflatoxigenic assessment of new Cu(II)-pq complexes against Aspergillus parasiticus, in dark conditions and under visible irradiation. FEMS Microbiol Lett 2021; 368:6415197. [PMID: 34724043 DOI: 10.1093/femsle/fnab136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Accepted: 10/29/2021] [Indexed: 11/14/2022] Open
Abstract
The issue of food contamination by fungi and aflatoxins; constitutes a serious concern not only for human/animal health but also for agriculture and the economy. Aflatoxins are secondary metabolites produced by certain filamentous fungi and contaminate a variety of foodstuffs. In this context, control of fungal growth and aflatoxin contamination appears to be important. The present study aimed to investigate new Cu(I) and Cu(II)-quinoxaline complexes, namely [Cu(2,2´-pq)(NO3)](NO3) (1), [Cu(2,2´-pq)2(NO3)](NO3)·6H2O (2) and [Cu(2,2΄-pq)2](BF4) (3), where 2,2´-pq is 2-(2'-pyridyl quinoxaline), as antifungal agents against Aspergillus parasiticus. All complexes, the ligand and the starting material Cu(NO3)2-3H2O, regardless of the concentration used, caused inhibition of A. parasiticus growth ranged from 8.52 to 33.33%. The fungal growth inhibition was triggered when irradiation in visible (λ > 400 nm) was continuously applied (range 18.36-57.20%). The highest inhibitory activity was exhibited by the complex [Cu(2,2´-pq)2(NO3)](NO3)·6H2O and for this reason, it was selected to be studied for its ability to suppress aflatoxin B1 produced by A. parasiticus. AFB1 production after the irradiation process was found to be suppressed by 25% compared to AFB1 produced in dark conditions.
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Affiliation(s)
- Eutuxia Lioli
- Laboratory of Inorganic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens , Panepistimiopolis Zografou, 15771 Athens, Greece
| | - Eleni Kollia
- Laboratory of Food Chemistry, Department of Chemistry, National and Kapodistrian University of Athens , Panepistimiopolis Zografou, 15784 Athens, Greece
| | - Panagiota Markaki
- Laboratory of Food Chemistry, Department of Chemistry, National and Kapodistrian University of Athens , Panepistimiopolis Zografou, 15784 Athens, Greece
| | - Christiana A Mitsopoulou
- Laboratory of Inorganic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens , Panepistimiopolis Zografou, 15771 Athens, Greece
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3
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Petronijević J, Joksimović N, Milović E, Crnogorac MĐ, Petrović N, Stanojković T, Milivojević D, Janković N. Antitumor activity, DNA and BSA interactions of novel copper(II) complexes with 3,4-dihydro-2(1H)-quinoxalinones. Chem Biol Interact 2021; 348:109647. [PMID: 34520752 DOI: 10.1016/j.cbi.2021.109647] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 07/16/2021] [Accepted: 09/06/2021] [Indexed: 11/30/2022]
Abstract
In order to discover new therapeutically active agents a series of novel copper(II) complexes with 3,4-dihydro-2(1H)-quinoxalinones were synthesized. All complexes were characterized by IR and EPR spectroscopic techniques and examined for their cytotoxic effect on human cancer cell lines HeLa, LS174, A549 and normal fibroblasts (MRC-5). For further examination of the cytotoxic mechanisms of novel complexes, three of them were chosen for analysing their effects on the distribution of HeLa cells in the cell cycle phases. The results of the flow cytometry analysis suggest that tested complexes lead to time-dependent accumulation of the cells in S and G2/M phases. The strongest accumulation effect showed complex 2d after 48 h of incubation. Competitive experiments with ethidium bromide (EB) indicated that tested compound 2d have affinity to displace EB from the EB-DNA complex through intercalation. Also, the binding parameters values for 2d-BSA complex showed that a reversible 2d-BSA complex is formed and ligand 2d can be stored and carried by BSA.
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Affiliation(s)
- Jelena Petronijević
- University of Kragujevac, Faculty of Science, Department of Chemistry, Radoja Domanovica 12, Kragujevac, Serbia.
| | - Nenad Joksimović
- University of Kragujevac, Faculty of Science, Department of Chemistry, Radoja Domanovica 12, Kragujevac, Serbia
| | - Emilija Milović
- University of Kragujevac, Institute for Information Technologies Kragujevac, Department of Sciences, Jovana Cvijića bb, 34000, Kragujevac, Serbia
| | | | - Nina Petrović
- Laboratory for Radiobiology and Molecular Genetics, Department of Health and Environment, "VINČA" Institute of Nuclear Sciences -National Institute of the Republic of Serbia, University of Belgrade, Mike Petrovica Alasa 12-14, Serbia
| | - Tatjana Stanojković
- Institute for Oncology and Radiology of Serbia, Pasterova 14, 11000, Belgrade, Serbia
| | - Dušan Milivojević
- Laboratory for Radiobiology and Molecular Genetics, Department of Health and Environment, "VINČA" Institute of Nuclear Sciences -National Institute of the Republic of Serbia, University of Belgrade, Mike Petrovica Alasa 12-14, Serbia
| | - Nenad Janković
- University of Kragujevac, Institute for Information Technologies Kragujevac, Department of Sciences, Jovana Cvijića bb, 34000, Kragujevac, Serbia
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Aragoni MC, Arca M, Binda M, Caltagirone C, Lippolis V, Natali D, Podda E, Sampietro M, Pintus A. Platinum diimine-dithiolate complexes as a new class of photoconducting compounds for pristine photodetectors: case study on [Pt(bipy)(Naph-edt)] (bipy = 2,2'-bipyridine; Naph-edt 2- = 2-naphthylethylene-1,2-dithiolate). Dalton Trans 2021; 50:7527-7531. [PMID: 34037042 DOI: 10.1039/d1dt01288f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
The photoconducting properties of platinum diimine-dithiolate complex [Pt(bipy)(Naph-edt)] (1; bipy = 2,2'-bipyridine; Naph-edt2- = 2-naphthylethylene-1,2-dithiolate) were investigated. DFT calculations on a model assembly with four complex units suggest that the high external quantum efficency measured on a prototype photodetector correlates with the intermolecular character of electronic excitations in the visible region.
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Affiliation(s)
- M Carla Aragoni
- Università degli Studi di Cagliari, Dipartimento di Scienze Chimiche e Geologiche, 09042 Monserrato (Cagliari), Italy.
| | - Massimiliano Arca
- Università degli Studi di Cagliari, Dipartimento di Scienze Chimiche e Geologiche, 09042 Monserrato (Cagliari), Italy.
| | - Maddalena Binda
- Center for Nano Science and Technology @Polimi, Istituto Italiano di Tecnologia, Via Pascoli 70/3, 20133 Milano, Italy
| | - Claudia Caltagirone
- Università degli Studi di Cagliari, Dipartimento di Scienze Chimiche e Geologiche, 09042 Monserrato (Cagliari), Italy.
| | - Vito Lippolis
- Università degli Studi di Cagliari, Dipartimento di Scienze Chimiche e Geologiche, 09042 Monserrato (Cagliari), Italy.
| | - Dario Natali
- Center for Nano Science and Technology @Polimi, Istituto Italiano di Tecnologia, Via Pascoli 70/3, 20133 Milano, Italy and Politecnico di Milano, Dipartimento di Elettronica, Informazione e Bioingegneria, Via Ponzio 34/5, 20133 Milano, Italy
| | - Enrico Podda
- Università degli Studi di Cagliari, Dipartimento di Scienze Chimiche e Geologiche, 09042 Monserrato (Cagliari), Italy.
| | - Marco Sampietro
- Center for Nano Science and Technology @Polimi, Istituto Italiano di Tecnologia, Via Pascoli 70/3, 20133 Milano, Italy and Politecnico di Milano, Dipartimento di Elettronica, Informazione e Bioingegneria, Via Ponzio 34/5, 20133 Milano, Italy
| | - Anna Pintus
- Università degli Studi di Cagliari, Dipartimento di Scienze Chimiche e Geologiche, 09042 Monserrato (Cagliari), Italy.
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Balou S, Zarkadoulas A, Koukouvitaki M, Marchiò L, Efthimiadou EK, Mitsopoulou CA. Synthesis, DNA-Binding, Anticancer Evaluation, and Molecular Docking Studies of Bishomoleptic and Trisheteroleptic Ru-Diimine Complexes Bearing 2-(2-Pyridyl)-quinoxaline. Bioinorg Chem Appl 2021; 2021:5599773. [PMID: 34093697 PMCID: PMC8137304 DOI: 10.1155/2021/5599773] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Accepted: 04/21/2021] [Indexed: 11/17/2022] Open
Abstract
Herein, we report the synthesis and characterization of a bishomoleptic and a trisheteroleptic ruthenium (II) polypyridyl complex, namely, [Ru(bpy)2(2, 2'-pq)](PF6)2 (1) and [Ru(bpy) (phen) (2, 2'-pq)](PF6)2 (2), respectively, where bpy = 2,2'-bipyridine, phen = 1,10-phenanthroline, and 2, 2'-pq = 2-(2'-pyridyl)-quinoxaline. The complexes were characterized by elemental analysis, TGA, 1H-NMR, FT-IR, UV-Vis, emission spectroscopy, and electrochemistry. Their structures were confirmed by single-crystal X-ray diffraction analysis. Complexes 1 and 2 were crystalized in orthorhombic, Pbca, and monoclinic, P21/n systems, respectively. Various spectroscopic techniques were employed to investigate the interaction of both complexes with calf thymus DNA (CT-DNA). The experimental data were confirmed by molecular docking studies, employing two different DNA sequences. Both complexes, 1 and 2, bind with DNA via a minor groove mode of binding. MTT experiments revealed that both complexes induce apoptosis of MCF-7 (breast cancer) cells in low concentrations. Confocal microscopy indicated that 2 localizes in the nucleus and internalizes more efficiently in MCF-7 than in HEK-293.
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Affiliation(s)
- Sofia Balou
- Inorganic Chemistry Laboratory, Chemistry Department, National and Kapodistrian University of Athens, Panepistimiopolis, Zografou 157 71, Greece
| | - Athanasios Zarkadoulas
- Inorganic Chemistry Laboratory, Chemistry Department, National and Kapodistrian University of Athens, Panepistimiopolis, Zografou 157 71, Greece
| | - Maria Koukouvitaki
- Inorganic Chemistry Laboratory, Chemistry Department, National and Kapodistrian University of Athens, Panepistimiopolis, Zografou 157 71, Greece
| | - Luciano Marchiò
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale, Università degli Studi Parma, Parco Area delle Scienze 17A, I43124 Parma, Italy
| | - Eleni K. Efthimiadou
- Inorganic Chemistry Laboratory, Chemistry Department, National and Kapodistrian University of Athens, Panepistimiopolis, Zografou 157 71, Greece
| | - Christiana A. Mitsopoulou
- Inorganic Chemistry Laboratory, Chemistry Department, National and Kapodistrian University of Athens, Panepistimiopolis, Zografou 157 71, Greece
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6
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Synthesis, characterization, DNA binding and cytotoxicity studies of two novel Cu(II)-2-(2′-pyridyl) quinoxaline complexes. J Inorg Biochem 2020; 208:111077. [DOI: 10.1016/j.jinorgbio.2020.111077] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2019] [Revised: 03/13/2020] [Accepted: 03/19/2020] [Indexed: 01/01/2023]
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7
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Samiee S, Taghvaeian S. Geometrical structure, electronic and nonlinear optical properties of square-planar heteroleptic complexes containing bypridine and pyrazine dithiolate derivatives as dye-sensitized solar cell: A DFT study. Appl Organomet Chem 2018. [DOI: 10.1002/aoc.4626] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Sepideh Samiee
- Department of Chemistry, Faculty of Science; Shahid Chamran University of Ahvaz; Ahvaz Iran
| | - Samira Taghvaeian
- Department of Chemistry, Faculty of Science; Shahid Chamran University of Ahvaz; Ahvaz Iran
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8
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9
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New silver(I) complex with diazafluorene based ligand: Synthesis, characterization, investigation of in vitro DNA binding and antimicrobial studies. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.03.042] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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10
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Zarkadoulas A, Field MJ, Artero V, Mitsopoulou CA. Proton reduction reaction catalyzed by homoleptic nickel bis-1,2-dithiolate complexes: Experimental and theoretical mechanistic investigations. ChemCatChem 2017; 9:2308-2317. [PMID: 28670348 PMCID: PMC5490785 DOI: 10.1002/cctc.201601399] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Indexed: 01/01/2023]
Abstract
A series of homoleptic monoanionic nickel dithiolene complexes [Ni(bdt)2](NBu4), [Ni(tdt)2](NBu4), and [Ni(mnt)2](NBu4) containing the ligands benzene-1,2-dithiolate (bdt2-), toluene-3,4-dithiolate (tdt2-) and maleonitriledithiolate (mnt2-), respectively, have been employed as electrocatalysts in the hydrogen evolution reaction with trifluoroacetic acid as proton source in acetonitrile. All complexes were active catalysts with TONs reaching 113, 158 and 6 for [Ni(bdt)2](NBu4), [Ni(tdt)2](NBu4), and [Ni(mnt)2](NBu4), respectively. Faradaic yield for hydrogen evolution reaction reaches 88 % for 2- , which also displays the minimal overpotential requirement value (467 mV) within the series. Two pathways for H2 evolution can be hypothesized that differ on on the sequence of protonation and reduction steps. DFT calculations are in agreement with experimental data and indicate that protonation at sulfur follows reduction to the dianion. Hydrogen evolves from the direduced-diprotonated form via a highly distorted nickel hydride intermediate. The effects of acid strength and concentration in the hydrogen-evolving mechanism are also discussed.
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Affiliation(s)
- Athanasios Zarkadoulas
- Inorganic Chemistry Laboratory, Chemistry Department, National and Kapodistrian University of Athens, Panepistimiopolis, Zografou 157 71, Greece
| | - Martin J. Field
- DYNAMO/DYNAMOP, Institut de Biologie Structurale, UMR CNRS/Université Grenoble Alpes/CEA 5075, EPN Campus, 6 rue Jules Horowitz F-38000 Grenoble, France
| | - Vincent Artero
- Laboratory of Chemistry and Biology of Metals, Université Grenoble Alpes, CNRS, CEA, 17 rue des Martyrs, F-38000 Grenoble, France
| | - Christiana A. Mitsopoulou
- Inorganic Chemistry Laboratory, Chemistry Department, National and Kapodistrian University of Athens, Panepistimiopolis, Zografou 157 71, Greece
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11
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Ypsilantis K, Tsolis T, Kourtellaris A, Manos MJ, Plakatouras JC, Garoufis A. Synthesis, reactivity and characterization of Pt(ii) complexes with N,N′ chelating ligands; structure and dimethylsulfoxide reactivity relationship. Dalton Trans 2017; 46:1467-1480. [DOI: 10.1039/c6dt04035g] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Chelated N-heterocycles can be replaced from the coordination sphere of square planar Pt(ii) complexes by DMSO.
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Affiliation(s)
| | - Theodoros Tsolis
- Department of Chemistry
- University of Ioannina
- GR-45110 Ioannina
- Greece
| | | | - Manolis J. Manos
- Department of Chemistry
- University of Ioannina
- GR-45110 Ioannina
- Greece
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12
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Thakor KP, Lunagariya MV, Patel MN. Acetyl pyridine-based palladium(II) compounds as an artificial metallonucleases. J Biomol Struct Dyn 2016; 35:2925-2937. [DOI: 10.1080/07391102.2016.1236748] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Khyati P. Thakor
- Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar, Gujarat 388 120, India
| | - Miral V. Lunagariya
- Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar, Gujarat 388 120, India
| | - Mohan N. Patel
- Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar, Gujarat 388 120, India
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13
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Deepthi TV, Venugopalan P. Synthesis, DNA-binding, and cytotoxic studies on three copper(II) complexes of unsymmetrical synthetic analogues of curcumin. J COORD CHEM 2016. [DOI: 10.1080/00958972.2016.1227973] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- T. V. Deepthi
- Department of Chemistry, Sree Neelakanta Government Sanskrit College (Affiliated to the University of Calicut), Pattambi, Kerala, India
| | - P. Venugopalan
- Department of Chemistry, Sree Neelakanta Government Sanskrit College (Affiliated to the University of Calicut), Pattambi, Kerala, India
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Xue X, Wang J, Si G, Wang C, Zhou S. Synthesis, DNA-binding properties and cytotoxicity evaluation of two copper(II) complexes based on curcumin. TRANSIT METAL CHEM 2016. [DOI: 10.1007/s11243-016-0027-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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15
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El-Asmy HA, Butler IS, Mouhri ZS, Jean-Claude BJ, Emmam M, Mostafa SI. Synthesis, characterization and DNA interaction studies of new complexes containing 2-mercaptobenzothiazole and different dinitrogen or phosphorous aromatic donors. Inorganica Chim Acta 2016. [DOI: 10.1016/j.ica.2015.10.041] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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16
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Rillema DP, Stoyanov SR, Cruz AJ, Nguyen H, Moore C, Huang W, Siam K, Jehan A, KomReddy V. HOMO-LUMO energy gap control in platinum(II) biphenyl complexes containing 2,2'-bipyridine ligands. Dalton Trans 2015; 44:17075-90. [PMID: 26369314 DOI: 10.1039/c5dt01891a] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of platinum(ii) biphenyl 2,2'-bipyridine complexes containing electron-donating and electron-withdrawing moieties on the 4 and 4' positions of the bipyridine ligand exhibit emission from excited states in the 600 nm region of the spectrum upon excitation in the metal-to-ligand charge transfer transition located near 450 nm. These complexes are distorted from planarity based on both single crystal structure determinations and density functional theory (DFT) calculations of isolated molecules in acetonitrile. The DFT also reveals the geometry of the lowest-lying triplet state (LLTS) of each complex that is important for emission behavior. The LLTS are assigned based on the electron spin density distributions and correlated with the singlet excited states to understand the mechanism of electronic excitation and relaxation. Time-dependent DFT calculations are performed to compute the singlet excited state energies of these complexes so as to help interpret their UV-Vis absorption spectra. Computational and experimental results, including absorption and emission energy maxima, electrochemical reduction potentials, LLTS, singlet excited states, and LUMO and HOMO energies, exhibit linear correlations with the Hammett constants for para-substituents σp. These correlations are employed to screen complexes that have not yet been synthesized. The correlation analysis indicates that the electronic structure and the HOMO-LUMO energy gap in Pt(ii) complexes can be effectively controlled using electron-donating and electron-withdrawing moieties covalently bonded to the ligands. The information presented in this paper provides a better understanding of the fundamental electronic and thermodynamic behavior of these complexes and could be used to design systems with specific applications.
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Affiliation(s)
- D Paul Rillema
- Department of Chemistry, Wichita State University, Wichita, KS 67260, USA.
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17
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Pintus A, Aragoni MC, Isaia F, Lippolis V, Lorcy D, Slawin AMZ, Woollins JD, Arca M. On the Role of Chalcogen Donor Atoms in Diimine-Dichalcogenolate PtIISONLO Chromophores: Is It Worth Replacing Sulfur with Selenium? Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201500777] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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18
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Pages BJ, Zhang Y, Li F, Sakoff J, Gilbert J, Aldrich-Wright JR. Cytotoxicity and Structural Analyses of 2,2′-Bipyridine-, 4,4′-Dimethyl-2,2′-bipyridine- and 2-(2′-Pyridyl)quinoxalineplatinum(II) Complexes. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201500754] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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19
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Loganathan R, Ramakrishnan S, Ganeshpandian M, Bhuvanesh NSP, Palaniandavar M, Riyasdeen A, Akbarsha MA. Mixed ligand copper(ii) dicarboxylate complexes: the role of co-ligand hydrophobicity in DNA binding, double-strand DNA cleavage, protein binding and cytotoxicity. Dalton Trans 2015; 44:10210-27. [DOI: 10.1039/c4dt03879g] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Mixed ligand 5,6-dmp and 3,4,7,8-tmp complexes display more prominent cytotoxicity and higher apoptotic inducing ability.
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Affiliation(s)
| | - Sethu Ramakrishnan
- School of Chemistry
- Bharathidasan University
- Tiruchirappalli – 620 024
- India
| | - Mani Ganeshpandian
- School of Chemistry
- Bharathidasan University
- Tiruchirappalli – 620 024
- India
| | | | - Mallayan Palaniandavar
- School of Chemistry
- Bharathidasan University
- Tiruchirappalli – 620 024
- India
- Distinguished Visiting Professor
| | | | - Mohamad Abdulkadhar Akbarsha
- Mahatma Gandhi–Doerenkamp Center for Alternatives to Use of Animals in Life Science Education
- Bharathidasan University
- Tiruchirappalli
- India
- Visiting Professor
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20
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Shabana AA, Butler IS, Gilson DF, Jean-Claude BJ, Mouhri ZS, Mostafa MM, Mostafa SI. Synthesis, characterization, anticancer activity and DNA interaction studies of new 2-aminobenzothiazole complexes; crystal structure and DFT calculations of [Ag(Habt)2]ClO4. Inorganica Chim Acta 2014. [DOI: 10.1016/j.ica.2014.09.018] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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21
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Wang J, Wei D, Jiang B, Liu T, Ni J, Zhou S. Two copper(II) complexes of curcumin derivatives: synthesis, crystal structure and in vitro antitumor activity. TRANSIT METAL CHEM 2014. [DOI: 10.1007/s11243-014-9831-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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22
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Kaplanis M, Stamatakis G, Papakonstantinou VD, Paravatou-Petsotas M, Demopoulos CA, Mitsopoulou CA. Re(I) tricarbonyl complex of 1,10-phenanthroline-5,6-dione: DNA binding, cytotoxicity, anti-inflammatory and anti-coagulant effects towards platelet activating factor. J Inorg Biochem 2014; 135:1-9. [PMID: 24632342 DOI: 10.1016/j.jinorgbio.2014.02.003] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2013] [Revised: 02/05/2014] [Accepted: 02/06/2014] [Indexed: 10/25/2022]
Abstract
The complex fac-[Re(CO)3(phendione)Cl] (1) (where phendione=1,10-phenanthroline-5,6-dione) has been synthesized and fully characterized by UV-visible, FTIR, and NMR techniques. The DNA binding properties of 1 are investigated by UV-spectrophotometric (melting curves), covalent binding assay, CV (cyclic voltammetry), circular dichroism (CD) and viscosity measurements. Experimental data indicate that 1 fits into the major groove without disrupting the helical structure of the B-DNA in contrast to the free phendione which intercalates within the base pairs of DNA. Upon irradiation, complex 1 promotes the cleavage of plasmid pBR322 DNA from supercoiled form I to nicked form II via a proton coupled electron transfer mechanism. This comes as a result of experimental data in anaerobic/aerobic conditions and in the presence of DMSO. The biological activities of 1 and its precursors [Re(CO)5Cl] and phendione are tested towards a series of cancerous cell lines as glioblastoma (T98G), prostate cancer (PC3) and breast cancer (MCF-7) as well as platelet activating factor (PAF)-aggregation. Moreover, all the aforementioned compounds are tested for their ability to modulate PAF-basic metabolic enzyme activities in preparations of rabbit leukolytes. The in vitro experiments indicate that phendione has a better antitumor effect than cisplatin whereas [Re(CO)5Cl] is a better PAF inhibitor than both the phendione ligand and 1. Moreover, for the first time it is indicated that [Re(CO)5Cl], with a IC50 of 17nM is comparable to the widely used PAF receptor antagonists, BN52021 and WEB2170 with IC50 of 30 and 20nM, respectively, whereas 1 affects PAF-catabolism.
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Affiliation(s)
- Michael Kaplanis
- Laboratory of Inorganic Chemistry, Faculty of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 157 71 Athens, Greece
| | - George Stamatakis
- Laboratory of Biochemistry, Faculty of Chemistry, National and Kapodistrian University of Athens, Athens 15771, Greece
| | - Vasiliki D Papakonstantinou
- Laboratory of Biochemistry, Faculty of Chemistry, National and Kapodistrian University of Athens, Athens 15771, Greece
| | - Maria Paravatou-Petsotas
- Institute of Nuclear and Radiological Sciences and Technology, Energy and Safety, National Centre for Scientific Research "Demokritos", 15310 Athens, Greece
| | - Constantinos A Demopoulos
- Laboratory of Biochemistry, Faculty of Chemistry, National and Kapodistrian University of Athens, Athens 15771, Greece
| | - Christiana A Mitsopoulou
- Laboratory of Inorganic Chemistry, Faculty of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 157 71 Athens, Greece.
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23
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Pintus A, Aragoni MC, Coles SJ, Coles (née Huth) SL, Isaia F, Lippolis V, Musteti AD, Teixidor F, Viñas C, Arca M. New PtII diimine–dithiolate complexes containing a 1,2-dithiolate-1,2-closo-dicarbadodecarborane: an experimental and theoretical investigation. Dalton Trans 2014; 43:13649-60. [DOI: 10.1039/c4dt01929f] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new class of solvatochromic diimine–dithiolate complexes [Pt(N^N)(dtoc)] (dtoc2− = 1,2-dithiolate-1,2-closo-dicarbadodecaborane) is reported.
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Affiliation(s)
- Anna Pintus
- Dipartimento di Scienze Chimiche e Geologiche
- Università degli Studi di Cagliari
- 09042 Monserrato, Italy
| | - M. Carla Aragoni
- Dipartimento di Scienze Chimiche e Geologiche
- Università degli Studi di Cagliari
- 09042 Monserrato, Italy
| | - Simon J. Coles
- Department of Chemistry
- Faculty of Natural and Environmental Sciences
- University of Southampton
- Southampton SO17 1BJ, UK
| | - Susanne L. Coles (née Huth)
- Department of Chemistry
- Faculty of Natural and Environmental Sciences
- University of Southampton
- Southampton SO17 1BJ, UK
| | - Francesco Isaia
- Dipartimento di Scienze Chimiche e Geologiche
- Università degli Studi di Cagliari
- 09042 Monserrato, Italy
| | - Vito Lippolis
- Dipartimento di Scienze Chimiche e Geologiche
- Università degli Studi di Cagliari
- 09042 Monserrato, Italy
| | - Ana-Daniela Musteti
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC)
- 08193 Bellaterra, Spain
| | - Francesc Teixidor
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC)
- 08193 Bellaterra, Spain
| | - Clara Viñas
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC)
- 08193 Bellaterra, Spain
| | - Massimiliano Arca
- Dipartimento di Scienze Chimiche e Geologiche
- Università degli Studi di Cagliari
- 09042 Monserrato, Italy
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24
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Determination of acetamiprid partial-intercalative binding to DNA by use of spectroscopic, chemometrics, and molecular docking techniques. Anal Bioanal Chem 2013; 405:8871-83. [DOI: 10.1007/s00216-013-7294-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2013] [Revised: 08/05/2013] [Accepted: 08/06/2013] [Indexed: 01/07/2023]
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25
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Koutsouri E, Zarkadoulas A, Makedonas C, Koumbounis C, Paraskevopoulou P, Mitsopoulou CA. Combining photosensitizers: The case of [Cl2Pt(bpym)Re(CO)3Cl] and its dithiolate analogs. Polyhedron 2013. [DOI: 10.1016/j.poly.2012.09.041] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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26
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Shahabadi N, Moghadam NH. Determining the mode of interaction of calf thymus DNA with the drug sumatriptan using voltammetric and spectroscopic techniques. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2012; 99:18-22. [PMID: 23041917 DOI: 10.1016/j.saa.2012.09.022] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2012] [Revised: 08/31/2012] [Accepted: 09/09/2012] [Indexed: 06/01/2023]
Abstract
The interaction of native calf thymus DNA with sumatriptan(1-[3-(2-dimethylaminoethyl)-1H-indol-5-yl]-N-methyl-methanesulfonamide) at physiological pH was studied by spectrophotometry, circular dichroism, voltammetry and viscosimetric techniques. Sumatriptan molecule intercalated between base pairs of DNA, showed by a sharp increase in specific viscosity of DNA. In cyclic voltammetry, decrease of the peak current and positive shift indicated that this drug is able to intercalate between the DNA base pairs. In addition, the drug induced changes in the CD spectrum of CT-DNA, as well as hypochromism changes in its UV-vis spectrum.
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Affiliation(s)
- Nahid Shahabadi
- Department of Chemistry, Faculty of Science, Razi University, Kermanshah, Iran.
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27
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A perspective on solar energy conversion and water photosplitting by dithiolene complexes. Coord Chem Rev 2012. [DOI: 10.1016/j.ccr.2012.04.016] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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28
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Shahabadi N, Hadidi S. Spectroscopic studies on the interaction of calf thymus DNA with the drug levetiracetam. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2012; 96:278-283. [PMID: 22698844 DOI: 10.1016/j.saa.2012.05.045] [Citation(s) in RCA: 92] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/29/2012] [Revised: 05/09/2012] [Accepted: 05/17/2012] [Indexed: 06/01/2023]
Abstract
The interaction of native calf thymus DNA with the drug levetiracetam (LV) has been investigated by absorption, emission, circular dichroism, melting temperature (T(m)) curves and viscosity studies. Spectrophotometric studies of the interaction of levetiracetam with DNA have shown that it can binds to CT-DNA and the DNA binding constant (K(b)=(4.9±0.2)×10(3) M(-1)) is comparable to groove binding drugs. Competitive fluorimetric studies with hoechst 33258 have shown that levetiracetam exhibit the ability to displace the DNA-bound hoechst 33258 indicating that it binds to DNA in strong competition with hoechst 33258 for the groove binding. Furthermore, the drug induces detectable changes in the CD spectrum of CT-DNA as well as changes in its viscosity. The values of melting temperature (T(m)) of DNA-methylene blue (MB) complex and LV-DNA-MB complex were determined. Finally, all of the experimental results prove that the minor groove binding must be predominant.
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Affiliation(s)
- Nahid Shahabadi
- Department of Chemistry, Faculty of Science, Razi University, Kermanshah, Iran.
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29
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Shahabadi N, Fatahi P. DNA Interaction Studies of a Copper (II) Complex Containing an Antiviral Drug, Valacyclovir: The Effect of Metal Center on the Mode of Binding. DNA Cell Biol 2012; 31:1328-34. [DOI: 10.1089/dna.2011.1592] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Nahid Shahabadi
- Department of Chemistry, Faculty of Science, Razi University, Kermanshah, Iran
| | - Parvin Fatahi
- Department of Chemistry, Faculty of Science, Razi University, Kermanshah, Iran
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30
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Pintus A, Aragoni MC, Bellec N, Devillanova FA, Lorcy D, Isaia F, Lippolis V, Randall RAM, Roisnel T, Slawin AMZ, Woollins JD, Arca M. Structure-Property Relationships in PtII Diimine-Dithiolate Nonlinear Optical Chromophores Based on Arylethylene-1,2-dithiolate and 2-Thioxothiazoline-4,5-dithiolate. Eur J Inorg Chem 2012. [DOI: 10.1002/ejic.201200346] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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31
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Gao E, Lin L, Liu L, Zhu M, Wang B, Gao X. Two new palladium(ii) complexes: synthesis, characterization and their interaction with HeLa cells. Dalton Trans 2012; 41:11187-94. [DOI: 10.1039/c2dt30990d] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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32
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Vyas KM, Joshi RG, Jadeja RN, Prabha CR, Gupta VK. Synthesis, spectroscopic characterization and DNA nuclease activity of Cu(II) complexes derived from pyrazolone based NSO-donor Schiff base ligands. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2011; 84:256-268. [PMID: 21993257 DOI: 10.1016/j.saa.2011.09.039] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2011] [Revised: 09/02/2011] [Accepted: 09/14/2011] [Indexed: 05/31/2023]
Abstract
Two neutral mononuclear Cu(II) complexes have been prepared in EtOH using Schiff bases derived from 4-toluoyl pyrazolone and thiosemicarbazide. Both the ligands have been characterized on the basis of elemental analysis, IR, (1)H NMR, (13)C NMR and mass spectral data. The molecular geometry of one of these ligands has been determined by single crystal X-ray study. It reveals that these ligands exist in amine-one tautomeric form in the solid state. Microanalytical data, Cu-estimation, molar conductivity, magnetic measurements, IR, UV-Visible, FAB-Mass, TG-DTA data and ESR spectral studies were used to confirm the structures of the complexes. Electronic absorption and IR spectra of the complexes suggest a square-planar geometry around the central metal ion. The interaction of complexes with pET30a plasmid DNA was investigated by spectroscopic measurements. Results suggest that the copper complexes bind to DNA via an intercalative mode and can quench the fluorescence intensity of EB bound to DNA. The interaction between the complexes and DNA has also been investigated by agarose gel electrophoresis, interestingly, we found that the copper(II) complexes can cleave circular plasmid DNA to nicked and linear forms.
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Affiliation(s)
- Komal M Vyas
- Department of Chemistry, Faculty of Science, The MS University of Baroda, Vadodara 390002, India
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33
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Shahabadi N, Mohammadi S, Alizadeh R. DNA Interaction Studies of a New Platinum(II) Complex Containing Different Aromatic Dinitrogen Ligands. Bioinorg Chem Appl 2011; 2011:429241. [PMID: 22216016 PMCID: PMC3246310 DOI: 10.1155/2011/429241] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2011] [Revised: 09/12/2011] [Accepted: 09/13/2011] [Indexed: 11/17/2022] Open
Abstract
A new mononuclear Pt(II) complex, [Pt(DMP)(DIP)]Cl(2).H(2)O, in which DMP is 4,4-dimethyl-2,2-bipyridine and DIP is 4,7-diphenyl-1,10-phenantroline, has been synthesized and characterized by physicochemical and spectroscopic methods. The binding interaction of this complex with calf thymus DNA (CT-DNA) was investigated using fluorimetry, spectrophotometry, circular dichroism, viscosimetry and cyclic voltametry (CV). UV-VIS spectrum showed 4 nm bathochromic shift of the absorption band at 280 nm along with significant hypochromicity for the absorption band of the complex. The intrnisic binding constant (K(b) = 2 × 10(4) M(-1)) is more in keeping with intercalators and suggests this binding mode. The viscosity measurements showed that the complex-DNA interaction can be hydrophobic and confirm intercalation. Moreover, the complex induced detectable changes in the CD spectrum of CT-DNA. The fluorescence studies revealed that the probable quenching mechanism of fluorescence of the complex by CT-DNA is static quenching. The thermodynamic parameters (ΔH > 0 and ΔS > 0) showed that main interaction with hydrogenic forces occurred that is intercalation mode. Also, CV results confirm this mode because, with increasing the CT-DNA concentration, shift to higher potential was observed.
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Affiliation(s)
- Nahid Shahabadi
- Department of Inorganic Chemistry, Faculty of Chemistry, Razi University, Kermanshah 74155, Iran
| | - Somaye Mohammadi
- Department of Inorganic Chemistry, Faculty of Chemistry, Razi University, Kermanshah 74155, Iran
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34
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Pilia L, Espa D, Barsella A, Fort A, Makedonas C, Marchiò L, Mercuri ML, Serpe A, Mitsopoulou CA, Deplano P. Combined experimental and theoretical study on redox-active d8 metal dithione-dithiolato complexes showing molecular second-order nonlinear optical activity. Inorg Chem 2011; 50:10015-27. [PMID: 21939192 DOI: 10.1021/ic2007765] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Synthesis, characterization, NLO properties, and theoretical studies of the mixed-ligand dithiolene complexes of the nickel triad [M(II)(Bz(2)pipdt)(mnt)] (Bz(2)pipdt = 1,4-dibenzyl-piperazine-3,2-dithione, mnt = maleonitriledithiolato, M(II) = Ni, 1, Pd, 2, Pt, 3) are reported. Molecular structural characterization of 1-3 points out that four sulfur atoms are in a slightly distorted square-planar geometry. While the M-S bond distances are only slightly different, comparison of the C-C and C-S bonds in the C(2)S(2)MS(2)C(2) core allows us to point out a significant difference between the C-C and the C-S distances in Bz(2)pipdt and mnt. These findings suggest assigning a dithiolato character to mnt (pull ligand) and a dithione one (push ligand) to Bz(2)pipdt. Cyclic voltammetry of 1-3 exhibits two reversible reduction waves and a broad irreversible oxidation wave. These complexes are characterized in the visible region by a peak of moderately strong intensity, which undergoes negative solvatochromism. The molecular quadratic optical nonlinearities were determined by the EFISH technique, which provided the following values μβ(λ) (10(-48) esu) = -1436 (1), -1450 (2), and -1950 (3) converted in μβ(0) (10(-48) esu) = -463 (1), -684 (2), and -822 (3), showing that these complexes exhibit large negative second-order polarizabilities whose values depend on the metal, being highest for the Pt compound. DFT and TD-DFT calculations on 1-3 allow us to correlate geometries and electronic structures. Moreover, the first molecular hyperpolarizabilities have been calculated, and the results obtained support that the most appealing candidate as a second-order NLO chromophore is the platinum compound. This is due to (i) the most extensive mixture of the dithione/metal/dithiolato orbitals, (ii) the influence of the electric field of the solvent on the frontier orbitals that maximizes the difference in dipole moments between the excited and the ground state, and (iii) the largest oscillator strength in the platinum case vs nickel and palladium ones.
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Affiliation(s)
- Luca Pilia
- Dipartimento di Chimica Inorganica ed Analitica, Università di Cagliari, I-09042 Monserrato (Cagliari) Italy
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35
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Gao C, Ma X, Lu J, Wang Z, Tian J, Yan S. Synthesis, structure, DNA binding, and cleavage activity of two copper(II) complexes. J COORD CHEM 2011. [DOI: 10.1080/00958972.2011.587514] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Chunyan Gao
- a Department of Chemistry , Nankai University , Tianjin 300071, China
| | - Xiaofang Ma
- a Department of Chemistry , Nankai University , Tianjin 300071, China
- b Basic Medical College, Zhengzhou University , Zhengzhou 450001, China
| | - Jing Lu
- a Department of Chemistry , Nankai University , Tianjin 300071, China
| | - Zhigang Wang
- a Department of Chemistry , Nankai University , Tianjin 300071, China
| | - Jinlei Tian
- a Department of Chemistry , Nankai University , Tianjin 300071, China
| | - Shiping Yan
- a Department of Chemistry , Nankai University , Tianjin 300071, China
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36
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Lazarides T, McCormick TM, Wilson KC, Lee S, McCamant DW, Eisenberg R. Sensitizing the Sensitizer: The Synthesis and Photophysical Study of Bodipy−Pt(II)(diimine)(dithiolate) Conjugates. J Am Chem Soc 2010; 133:350-64. [DOI: 10.1021/ja1070366] [Citation(s) in RCA: 118] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Theodore Lazarides
- Department of Chemistry, University of Rochester, Rochester, New York 14627, United States
| | - Theresa M. McCormick
- Department of Chemistry, University of Rochester, Rochester, New York 14627, United States
| | - Kristina C. Wilson
- Department of Chemistry, University of Rochester, Rochester, New York 14627, United States
| | - Soohyun Lee
- Department of Chemistry, University of Rochester, Rochester, New York 14627, United States
| | - David W. McCamant
- Department of Chemistry, University of Rochester, Rochester, New York 14627, United States
| | - Richard Eisenberg
- Department of Chemistry, University of Rochester, Rochester, New York 14627, United States
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37
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Wang P, Leung CH, Ma DL, Yan SC, Che CM. Structure-based design of platinum(II) complexes as c-myc oncogene down-regulators and luminescent probes for G-quadruplex DNA. Chemistry 2010; 16:6900-11. [PMID: 20437426 DOI: 10.1002/chem.201000167] [Citation(s) in RCA: 100] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A series of platinum(II) complexes with tridentate ligands was synthesized and their interactions with G-quadruplex DNA within the c-myc gene promoter were evaluated. Complex 1, which has a flat planar 2,6-bis(benzimidazol-2-yl)pyridine (bzimpy) scaffold, was found to stabilize the c-myc G-quadruplex structure in a cell-free system. An in silico G-quadruplex DNA model has been constructed for structure-based virtual screening to develop new Pt(II)-based complexes with superior inhibitory activities. By using complex 1 as the initial structure for hit-to-lead optimization, bzimpy and related 2,6-bis(pyrazol-3-yl)pyridine (dPzPy) scaffolds containing amine side-chains emerge as the top candidates. Six of the top-scoring complexes were synthesized and their interactions with c-myc G-quadruplex DNA have been investigated. The results revealed that all of the complexes have the ability to stabilize the c-myc G-quadruplex. Complex 3 a ([Pt(II)L2R](+); L2=2,6-bis[1-(3-piperidinepropyl)-1H-enzo[d]imidazol-2-yl]pyridine, R=Cl) displayed the strongest inhibition in a cell-free system (IC(50)=2.2 microM) and was 3.3-fold more potent than that of 1. Complexes 3 a and 4 a ([Pt(II)L3R](+); L3=2,6-bis[1-(3-morpholinopropyl)-1H-pyrazol-3-yl]pyridine, R=Cl) were found to effectively inhibit c-myc gene expression in human hepatocarcinoma cells with IC(50) values of approximately 17 microM, whereas initial hit 1 displayed no significant effect on gene expression at concentrations up to 50 microM. Complexes 3 a and 4 a have a strong preference for G-quadruplex DNA over duplex DNA, as revealed by competition dialysis experiments and absorption titration; 3 a and 4 a bind G-quadruplex DNA with binding constants (K) of approximately 10(6)-10(7) dm(3) mol(-1), which are at least an order of magnitude higher than the K values for duplex DNA. NMR spectroscopic titration experiments and molecular modeling showed that 4 a binds c-myc G-quadruplex DNA through an external end-stacking mode at the 3'-terminal face of the G-quadruplex. Intriguingly, binding of c-myc G-quadruplex DNA by 3 b is accompanied by an increase of up to 38-fold in photoluminescence intensity at lambda(max)=622 nm.
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Affiliation(s)
- Ping Wang
- Department of Chemistry and Open Laboratory of Chemical Biology of the Institute of Molecular Technology for Drug Discovery and Synthesis, The University of Hong Kong, Pokfulam Road, Hong Kong, PR China
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38
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Mitsopoulou CA. Identifying of charge-transfer transitions and reactive centers in M(diimine)(dithiolate) complexes by DFT techniques. Coord Chem Rev 2010. [DOI: 10.1016/j.ccr.2009.12.035] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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39
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Synthesis, Characterization, DNA Binding, and Photocleavage Activity of Oxorhenium (V) Complexes with alpha-Diimine and Quinoxaline Ligands. Bioinorg Chem Appl 2010:973742. [PMID: 20634990 PMCID: PMC2902146 DOI: 10.1155/2010/973742] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2010] [Accepted: 04/01/2010] [Indexed: 11/18/2022] Open
Abstract
The complex [ReOCl3pq] (1) (where pq = 2-(2′pyridyl)quinoxaline) has been synthesized and fully characterized by UV-Vis, FTIR, 1 and 2D NMR, and cyclic voltammetry (CV). The DNA-binding properties of the complex 1 as well as of the compounds [ReOCl3bpy] (2), [ReOCl3phen] (3), and pq (4) were investigated by UV-spectrophotometric (melting curves), CV (cyclic voltammetry), and viscosity measurements. Experimental data suggest that complex 1 intercalates into the DNA base pairs. Upon irradiation, complex 1 was found to promote the cleavage of plasmid pBR 322 DNA from supercoiled form I to nicked form II. The mechanism of the DNA cleavage by complex 1 was also investigated.
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40
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Marqués-Gallego P, Gamiz-Gonzalez MA, Fortea-Pérez FR, Lutz M, Spek AL, Pevec A, Kozlevčar B, Reedijk J. Quinoxaline-2-carboxamide as a carrier ligand in two new platinum(ii) compounds: Synthesis, crystal structure, cytotoxic activity and DNA interaction. Dalton Trans 2010; 39:5152-8. [DOI: 10.1039/c001158d] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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41
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Shahabadi N, Kashanian S, Purfoulad M. DNA interaction studies of a platinum(II) complex, PtCl(2)(NN) (NN=4,7-dimethyl-1,10-phenanthroline), using different instrumental methods. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2009; 72:757-761. [PMID: 19119061 DOI: 10.1016/j.saa.2008.11.022] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2008] [Revised: 09/22/2008] [Accepted: 11/15/2008] [Indexed: 05/27/2023]
Abstract
The Pt(II) complex, PtCl(2)(4,7-Me(2)phen) (4,7-Me(2)phen=chelating dinitrogen ligand: 4,7-dimethyl-1,10-phenanthroline) was synthesized and characterized by spectroscopic ((1)H, (13)C NMR) and elemental analysis techniques. Binding interaction of this complex with calf thymus (CT) DNA has been investigated by emission, absorption, circular dichroism, viscosity and DNA thermal denaturation studies. The complex displays significant binding properties to the CT DNA. In fluorimeteric studies, the binding mode of complex with CT DNA was studied by using methylene blue as a fluoresce probe. As evidenced by the increasing fluorescence of methylene blue-DNA solutions in presence of increasing amount of complex, PtCl(2)(NN) complex is able to displace the methylene blue intercalated into DNA completely as to indicate intercalation. Furthermore, mentioned complex induces detectable changes in the CD spectrum of CT-DNA, an increase in T(m) value, and an increase in its viscosity. The experimental results showed that Pt(II) complex bound to DNA by an intercalative mode of binding.
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42
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Raman N, Sakthivel A, Rajasekaran K. Design, structural elucidation, DNA interaction and antimicrobial activities of metal complexes containing tetraazamacrocyclic Schiff bases. J COORD CHEM 2009. [DOI: 10.1080/00958970802687554] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- N. Raman
- a Research Department of Chemistry , VHNSN College , Virudhunagar, Tamil Nadu, India
| | - A. Sakthivel
- a Research Department of Chemistry , VHNSN College , Virudhunagar, Tamil Nadu, India
| | - K. Rajasekaran
- a Research Department of Chemistry , VHNSN College , Virudhunagar, Tamil Nadu, India
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Naue JA, Toma SH, Bonacin JA, Araki K, Toma HE. Probing the binding of tetraplatinum(pyridyl)porphyrin complexes to DNA by means of surface plasmon resonance. J Inorg Biochem 2009; 103:182-9. [DOI: 10.1016/j.jinorgbio.2008.10.005] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2008] [Revised: 09/26/2008] [Accepted: 10/06/2008] [Indexed: 10/21/2022]
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Veroni I, Mitsopoulou CA, Lahoz FJ. Synthesis, spectroscopic properties and crystal structure of mononuclear tricarbonylrhenium(I) chloride complexes carrying 6-functionalised quinoxalines. J Organomet Chem 2008. [DOI: 10.1016/j.jorganchem.2008.04.035] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Konidaris KF, Perlepes SP, Aromi G, Teat SJ, Escuer A, Manessi-Zoupa E. First use of 1,4-dihydro-2,3-quinoxalinedione in the chemistry of coordination polymers: A 3D copper(II) complex containing the 2,3-dioxyquinoxalinate(−2) ligand in a novel coordination mode. INORG CHEM COMMUN 2008. [DOI: 10.1016/j.inoche.2007.11.017] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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