101
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Li DD, Tao ZW. Nuclease activity of redox/non-redox active binuclear transition metal mixed-polypyridine complexes: [M2(1,4-tpbd)(diimine)2(H2O)2]4+, M = Zn, Co, Ni, Cd, diimine = phen, bpy, dafo. J COORD CHEM 2013. [DOI: 10.1080/00958972.2013.866655] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Dong-Dong Li
- Tianjin Institute of Medical and Pharmaceutical Sciences, Tianjin, China
| | - Zun-Wei Tao
- Tianjin Institute of Medical and Pharmaceutical Sciences, Tianjin, China
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102
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Feng FM, Cai S, Liu FA, Xie JQ. Studies of DNA-Binding and DNA-Cutting Mechanism of an Azamacrocyclic Cerium Complex with Carboxyl Branch. PROGRESS IN REACTION KINETICS AND MECHANISM 2013. [DOI: 10.3184/146867813x13738207456695] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
An azamacrocyclic compound with a carboxyl branch, 5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclo-tetradecane- N/-acetic acid (L), and its cerium complex were synthesised and characterised. The mode of combination of the cerium complex with DNA was investigated by fluorescence and UV-Vis absorption spectroscopy. The cutting function of the cerium complex towards supercoiled DNA was studied by the gel electrophoresis method. The results show that metal complex can bind to the phosphate group of DNA double helix and promote the hydrolysis of the phosphodiester bond of supercoiled DNA (Form I); under certain conditions, supercoiled form DNA (Form I) was transformed into the nicked form DNA (Form II) under the strong cutting effect of the macrocyclic cerium complex; the cutting is completed by a hydrolysis mechanism.
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Affiliation(s)
- Fa-mei Feng
- College of Chemistry and Pharmaceutical Engineering, Sichuan University of Science and Engineering, Zigong, Sichuan 643000, P.R. China
| | - Shulan Cai
- College of Chemistry and Pharmaceutical Engineering, Sichuan University of Science and Engineering, Zigong, Sichuan 643000, P.R. China
| | - Fu-an Liu
- College of Chemistry and Pharmaceutical Engineering, Sichuan University of Science and Engineering, Zigong, Sichuan 643000, P.R. China
| | - Jia-qing Xie
- College of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing 400054, P.R. China
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103
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Fang M, Wei L, Lin Z, Lu GY. Synthesis and DNA Cleavage Properties of Triazacrown Derivatives. CHINESE J CHEM 2013. [DOI: 10.1002/cjoc.201300699] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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104
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Ito T, Akamatsu K, Takeuchi K, Satani M, Tanabe K, Nishimoto SI. Site-specific DNA oxidation by a dinuclear copper complex containing a photoisomerizable azobenzene ligand. Inorganica Chim Acta 2013. [DOI: 10.1016/j.ica.2013.06.037] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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105
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Hernández-Gil J, Ferrer S, Cabedo N, López-Gresa MP, Castiñeiras A, Lloret F. Two copper complexes from two novel naphthalene-sulfonyl-triazole ligands: Different nuclearity and different DNA binding and cleavage capabilities. J Inorg Biochem 2013; 125:50-63. [DOI: 10.1016/j.jinorgbio.2013.04.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2012] [Revised: 04/12/2013] [Accepted: 04/12/2013] [Indexed: 02/05/2023]
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106
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Chen T, Hu Y, Cen Y, Chu X, Lu Y. A Dual-Emission Fluorescent Nanocomplex of Gold-Cluster-Decorated Silica Particles for Live Cell Imaging of Highly Reactive Oxygen Species. J Am Chem Soc 2013; 135:11595-602. [DOI: 10.1021/ja4035939] [Citation(s) in RCA: 256] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Tingting Chen
- State Key Laboratory
of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical
Engineering, Hunan University, Changsha,
410082, PR China
| | - Yihui Hu
- State Key Laboratory
of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical
Engineering, Hunan University, Changsha,
410082, PR China
| | - Yao Cen
- State Key Laboratory
of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical
Engineering, Hunan University, Changsha,
410082, PR China
| | - Xia Chu
- State Key Laboratory
of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical
Engineering, Hunan University, Changsha,
410082, PR China
| | - Yi Lu
- Department
of Chemistry, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States
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107
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Nose H, Rodgers MT. Energy-Resolved Collision-Induced Dissociation Studies of 2,2'-Bipyridine Complexes of the Late First-Row Divalent Transition-Metal Cations: Determination of the Third-Sequential Binding Energies. Chempluschem 2013; 78:1109-1123. [PMID: 31986729 DOI: 10.1002/cplu.201300156] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2013] [Indexed: 11/08/2022]
Abstract
The third-sequential binding energies of the late first-row divalent transition-metal cations with 2,2'-bipyridine (Bpy) are determined using guided-ion-beam tandem mass spectrometry (GIBMS) techniques. The metal cations investigated include the late first-row divalent transition-metal cations, Fe2+ , Co2+ , Ni2+ , Cu2+ , and Zn2+ . The kinetic-energy-dependent cross sections for collision-induced dissociation (CID) of the M2+ (Bpy)3 complexes are analyzed to extract absolute 0 and 298 K bond dissociation energies (BDEs) for the loss of an intact Bpy ligand. Theoretical electronic structure calculations at the B3LYP, BHandHLYP, and M06 levels of theory are performed to determine stable geometries and sequential BDEs of the M2+ (Bpy)x complexes (x=1-3). BDEs computed using the M06 functional are the largest, BHandHLYP values are intermediate, whereas B3LYP produces the smallest values. Very good agreement between the B3LYP theoretically calculated and threshold collision-induced dissociation experimentally determined BDEs is found, which suggests that the B3LYP functional is capable of accurately describing the binding in these M2+ (Bpy)3 complexes. Periodic trends in the binding of the M2+ (Bpy)x complexes are examined and compared to the analogous complexes with 1,10-phenanthroline (Phen), M2+ (Phen)x . Comparisons are also made to the analogous Bpy complexes, M+ (Bpy)x , with the late first-row monovalent transition-metal cations, Co+ , Ni+ , Cu+ , and Zn+ investigated previously.
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Affiliation(s)
- Holliness Nose
- Department of Chemistry, Wayne State University, Detroit, MI 48202 (USA), Fax: (+1) 313-577-8822
| | - M T Rodgers
- Department of Chemistry, Wayne State University, Detroit, MI 48202 (USA), Fax: (+1) 313-577-8822
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108
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Ma DL, He HZ, Leung KH, Chan DSH, Leung CH. Bioactive Luminescent Transition-Metal Complexes for Biomedical Applications. Angew Chem Int Ed Engl 2013; 52:7666-7682. [DOI: 10.1002/anie.201208414] [Citation(s) in RCA: 293] [Impact Index Per Article: 26.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023]
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109
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Li L, Du K, Wang Y, Jia H, Hou X, Chao H, Ji L. Self-activating nuclease and anticancer activities of copper(II) complexes with aryl-modified 2,6-di(thiazol-2-yl)pyridine. Dalton Trans 2013; 42:11576-88. [PMID: 23843095 DOI: 10.1039/c3dt50395j] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Three mononuclear copper complexes [Cu(PDTP)Cl2] (PDTP = 4-phenyl-2,6-di(thiazole-2-yl)pyridine, CuPDTP), [Cu(ADTP)Cl2] (ADTP = 4-(anthracen-9-yl)-2,6-di(thiazole-2-yl)pyridine, CuADTP) and [Cu(BFDTP)Cl2] (BFDTP = 4-(benzofuran-2-yl)-2,6-di(thiazole-2-yl)pyridine, CuBFDTP) were synthesized and characterized. The X-ray single crystallography results indicated that the Cu(II) ions showed slightly distorted square pyramid coordination environments, and the ligands deviated from ideal planarity in all three compounds. Based on the DNA binding studies, it was demonstrated that these three complexes exhibited weak DNA binding strengths, which were most likely groove binding modes. CuPDTP, CuADTP and CuBFDTP induced efficient DNA cleavage in the dark without the addition of external catalysts (oxidant or reductant). In contrast, in the presence of reducing or oxidizing agents, the nuclease activities increased more than 10-fold. Mechanistic investigations revealed the participation of reactive oxygen species, which can be trapped by ROS radical scavengers and ROS sensors. In the same experimental conditions, the free ligands and CuCl2 did not display any DNA cleaving activity. This result indicates that the complexes, rather than their components, play a significant role in the nuclease reaction process and that DNA cleavage may be initiated in an oxidative pattern. The proposed mechanism was attributed to the in situ activation of molecular oxygen by the oxidation of the copper complexes. In the MTT cytotoxicity studies, the three Cu(II) complexes exhibited an antitumor activity against the HeLa, BEL-7402 and HepG2 tumor cell lines. The HeLa cells treated with Cu(II) complexes demonstrated marked changes in their nuclear morphology, which were detected by Hoechst 33258 nuclear staining and acridine orange/ethidium bromide (AO/EB) staining assays. Nuclear chromatin cleavage also was observed from alkaline single-cell gel electrophoresis (comet assay).
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Affiliation(s)
- Lüying Li
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou, P R China
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110
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Sun YG, Li KL, Xu ZH, Lv TY, Wang SJ, You LX, Ding F. Synthesis, characterization, and interaction with DNA of Cu(II) and Zn(II) complexes with 2,2′-bipyridyl-6,6′-dicarboxylic acid. J COORD CHEM 2013. [DOI: 10.1080/00958972.2013.806655] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Ya-Guang Sun
- a Laboratory of Coordination Chemistry, Shenyang University of Chemical Technology , Shenyang , P.R. China
| | - Ke-Long Li
- a Laboratory of Coordination Chemistry, Shenyang University of Chemical Technology , Shenyang , P.R. China
| | - Zhen-He Xu
- a Laboratory of Coordination Chemistry, Shenyang University of Chemical Technology , Shenyang , P.R. China
| | - Tian-Yi Lv
- a Laboratory of Coordination Chemistry, Shenyang University of Chemical Technology , Shenyang , P.R. China
| | - Shu-Ju Wang
- a Laboratory of Coordination Chemistry, Shenyang University of Chemical Technology , Shenyang , P.R. China
| | - Li-Xin You
- a Laboratory of Coordination Chemistry, Shenyang University of Chemical Technology , Shenyang , P.R. China
| | - Fu Ding
- a Laboratory of Coordination Chemistry, Shenyang University of Chemical Technology , Shenyang , P.R. China
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111
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Ma DL, He HZ, Leung KH, Chan DSH, Leung CH. Bioaktive lumineszierende Übergangsmetallkomplexe für biomedizinische Anwendungen. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201208414] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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112
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Panja A. Role of the metal sites of a heterobimetallic trinuclear complex on DNA binding and cleavage activities. J COORD CHEM 2013. [DOI: 10.1080/00958972.2013.801466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Anangamohan Panja
- a Postgraduate Department of Chemistry , Panskura Banamali College , Panskura RS , India
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113
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Zhao Y, Gong T, Yu Z, Zhu S, He W, Ni T, Guo Z. Oxidative DNA cleavage promoted by polynuclear copper complexes bearing iminodiacetate chelator. Inorganica Chim Acta 2013. [DOI: 10.1016/j.ica.2013.01.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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114
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Hernández-Gil J, Ovèjak N, Ferrer S, Lloret F, Castiñeiras A. Novel Hexanuclear Copper(II) Complex Built from a Simple Tetrachelating Triazole Ligand: Synthesis, Structure, and Magnetism. Inorg Chem 2013; 52:2289-91. [DOI: 10.1021/ic3027946] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
| | | | | | | | - A. Castiñeiras
- Departamento de Química Inorgánica, Universidad de Santiago de Compostela, Santiago de Compostela, Spain
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115
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Patel RN, Sondhiya VP, Shukla KK, Patel DK, Singh Y. Synthesis, crystal structure, electrochemical and bioactivities of pyridine-2-carboxylato bridged copper(II) complexes. Polyhedron 2013. [DOI: 10.1016/j.poly.2012.10.027] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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116
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Liu C, Zhu Y, Chen P, Tang M. Theoretical Simulations on Interactions of Mono- and Dinuclear Metallonucleases with DNA. J Phys Chem B 2013; 117:1197-209. [DOI: 10.1021/jp306998f] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Chunmei Liu
- The College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, Henan Province 450001,
PR China
| | - Yanyan Zhu
- The College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, Henan Province 450001,
PR China
| | - Peipei Chen
- The College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, Henan Province 450001,
PR China
| | - Mingsheng Tang
- The College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, Henan Province 450001,
PR China
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117
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Improving nuclease activity of copper(II)-terpyridine complex through solubilizing and charge effects of glycine. J Inorg Biochem 2013; 121:114-20. [PMID: 23376552 DOI: 10.1016/j.jinorgbio.2012.12.018] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2012] [Revised: 12/27/2012] [Accepted: 12/28/2012] [Indexed: 11/22/2022]
Abstract
Copper complexes are potential metallonucleases that may find application in biotechnology and molecular biology. In this study, a ternary copper-terpyridine complex [Cu(ttpy)(Gly)(NO3)](NO3)·H2O (1) (ttpy=4'-p-tolyl-2,2':6,2″-terpyridine) is synthesized and characterized by X-ray crystallography and ESI-MS as an artificial nuclease. Glycine (Gly) is introduced into the complex to enhance the water-solubility and electrostatic affinity for the nucleic acid target. The interaction between complex 1 and DNA has been studied by spectroscopy and gel electrophoresis, using a structural analog [Cu(ttpy)(NO3)2] (2) as the reference. Complex 1 demonstrates an increased DNA binding ability and oxidative cleavage activity towards supercoiled pBR322 DNA as compared with complex 2. The enhanced water-solubility and positive charge of complex 1 may facilitate its access to DNA and formation of hydrogen bonds with the sugar-phosphate backbone. The results indicate that carefully positioned auxiliary groups in a copper complex can significantly affect the substrate binding or activation ability and consequently the nuclease efficiency of the complex.
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118
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Berthet N, Martel-Frachet V, Michel F, Philouze C, Hamman S, Ronot X, Thomas F. Nuclease and anti-proliferative activities of copper(ii) complexes of N3O tripodal ligands involving a sterically hindered phenolate. Dalton Trans 2013; 42:8468-83. [DOI: 10.1039/c3dt32659d] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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119
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Ghosh K, Mohan V, Kumar P, Singh UP. DNA binding, nuclease and superoxide scavenging activity studies on mononuclear cobalt complexes derived from tridentate ligands. Polyhedron 2013. [DOI: 10.1016/j.poly.2012.09.025] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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120
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Hernández-Gil J, Ferrer S, Salvador E, Calvo J, Garcia-España E, Mareque-Rivas JC. A dinucleating ligand which promotes DNA cleavage with one and without a transition metal ion. Chem Commun (Camb) 2013; 49:3655-7. [DOI: 10.1039/c3cc39067e] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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121
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González-Álvarez M, Pascual-Álvarez A, del Castillo Agudo L, Castiñeiras A, Liu-González M, Borrás J, Alzuet-Piña G. Mixed-ligand copper(ii)–sulfonamide complexes: effect of the sulfonamide derivative on DNA binding, DNA cleavage, genotoxicity and anticancer activity. Dalton Trans 2013; 42:10244-59. [DOI: 10.1039/c3dt50416f] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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122
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Nakamura Y, Taruno Y, Sugimoto M, Kitamura Y, Seng HL, Kong SM, Ng CH, Chikira M. The DNA binding site specificity and antiproliferative property of ternary Pt(ii) and Zn(ii) complexes of phenanthroline and N,N′-ethylenediaminediacetic acid. Dalton Trans 2013; 42:3337-45. [DOI: 10.1039/c2dt32709k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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123
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Sun J, Yan Y, Sun S, Shu X, Zhu C, Zhu J. DNA binding and reactivity assays based on in-frame protein expression. Chem Sci 2013. [DOI: 10.1039/c2sc21464d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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124
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de Almeida VR, Xavier FR, Osório REHMB, Bessa LM, Schilling EL, Costa TG, Bortolotto T, Cavalett A, Castro FAV, Vilhena F, Alves OC, Terenzi H, Eleutherio ECA, Pereira MD, Haase W, Tomkowicz Z, Szpoganicz B, Bortoluzzi AJ, Neves A. In vitro and in vivo activity of a new unsymmetrical dinuclear copper complex containing a derivative ligand of 1,4,7-triazacyclononane: catalytic promiscuity of [Cu2(L)Cl3]. Dalton Trans 2013; 42:7059-73. [DOI: 10.1039/c3dt33046j] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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125
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Novel tetranuclear distorted open-cubane copper complex containing oximate bridges: Synthesis, crystal structure, DNA binding and cleavage activity. Inorganica Chim Acta 2012. [DOI: 10.1016/j.ica.2012.03.042] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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126
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Hernández-Gil J, Ferrer S, Castiñeiras A, Lloret F. A Unique Discrete Tetranuclear Cu′–Cu(N-N)2Cu–Cu′ Copper(II) Complex, Built from a μ3-1,2,4-Triazolato-μ-carboxylato Ligand, as an Effective DNA Cleavage Agent. Inorg Chem 2012; 51:9809-19. [DOI: 10.1021/ic301168k] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Javier Hernández-Gil
- Departament de Química
Inorgànica, Universitat de València, Vicent Andrés Estellés s/n, 46100-Burjassot, Valencia,
Spain
| | - Sacramento Ferrer
- Departament de Química
Inorgànica, Universitat de València, Vicent Andrés Estellés s/n, 46100-Burjassot, Valencia,
Spain
| | - Alfonso Castiñeiras
- Departamento
de
Química Inorgánica, Universidad de Santiago de Compostela, Campus Universitario Sur,
E-15782 Santiago de Compostela, Spain
| | - Francesc Lloret
- Institut de Ciència
Molecular, Universitat de València, Catedràtic José Beltrán 2, 46980-Paterna,
Valencia, Spain
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127
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Wang ZG, Kou YY, Lu J, Gao CY, Tian JL, Yan SP. Synthesis, magnetic properties, DNA binding and cleavage activity of a new oxalato bridged copper(II) complex. Appl Organomet Chem 2012. [DOI: 10.1002/aoc.2889] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | - Ying-ying Kou
- Department of Chemistry; Nankai University; Tianjin; 300071; People's Republic of China
| | | | | | | | - Shi-ping Yan
- Department of Chemistry; Nankai University; Tianjin; 300071; People's Republic of China
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128
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Manikandamathavan VM, Rajapandian V, Freddy AJ, Weyhermüller T, Subramanian V, Nair BU. Effect of coordinated ligands on antiproliferative activity and DNA cleavage property of three mononuclear Cu(II)-terpyridine complexes. Eur J Med Chem 2012; 57:449-58. [PMID: 22846797 DOI: 10.1016/j.ejmech.2012.06.039] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2012] [Revised: 06/15/2012] [Accepted: 06/20/2012] [Indexed: 01/18/2023]
Abstract
Three mononuclear copper(II) complexes, [Cu(tpy)Cl(2)] 1, [Cu(tpy)(NO(3))(2)(H(2)O)] 2 and [Cu(Ptpy)Cl(2)]·H(2)O·HCl 3 have been synthesised and characterized by various spectroscopic techniques and single crystal X-ray diffraction. Complexes 1 and 3 have five coordinate geometry in solid state, whereas complex 2 has six coordinate geometry. Mass spectral and EPR evidence suggest that in solution all the three complexes exist predominantly as a four coordinate species. Molecular modelling and DNA cleavage studies indicate that complexes 1 and 2 are DNA minor groove binders, whereas 3 is an intercalator. All the three complexes show nuclease activity in the presence of hydrogen peroxide. The three complexes have been found to be cytotoxic towards A549 lung adenocarcinoma cells.
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Affiliation(s)
- Verasuntharam M Manikandamathavan
- Chemical Laboratory, Central Leather Research Institute, Council of Scientific and Industrial Research, Adyar, Chennai 600 020, India
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129
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Abstract
The development of synthetic agents able to hydrolytically cleave DNA with high efficiency and selectivity is still a fascinating challenge. Over the years, many examples have been reported reproducing part of the behaviour of the corresponding natural enzymes. Eventually, even the possibility to apply such systems to the manipulation of DNA of higher organisms has been demonstrated. However, efficiency of enzymes is still unrivalled. This feature article discusses the progress reported toward the realization of synthetic nucleases with particular attention to the comprehension of the reaction mechanisms and to the strategies that need to be addressed to obtain more efficient systems.
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Affiliation(s)
- Fabrizio Mancin
- Dipartimento di Scienze Chimiche, Università di Padova, via Marzolo 1, I -35131 Padova, Italy.
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130
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Nelson KE, Ihms HE, Mazumdar D, Bruesehoff PJ, Lu Y. The importance of peripheral sequences in determining the metal selectivity of an in vitro-selected Co(2+) -dependent DNAzyme. Chembiochem 2012; 13:381-91. [PMID: 22250000 PMCID: PMC3299816 DOI: 10.1002/cbic.201100724] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2011] [Indexed: 11/12/2022]
Abstract
DNAzymes are catalytically active DNA molecules that use metal cofactors for their enzymatic functions. While a growing number of DNAzymes with diverse functions and metal selectivities have been reported, the relationships between metal ion selectivity, conserved sequences and structures responsible for selectivity remain to be elucidated. To address this issue, we report biochemical assays of a family of previously reported in vitro selected DNAzymes. This family includes the clone 11 DNAzyme, which was isolated by positive and negative selection, and the clone 18 DNAzyme, which was isolated by positive selection alone. The clone 11 DNAzyme has a higher selectivity for Co(2+) over Pb(2+) compared with clone 18. The reasons for this difference are explored here through phylogenetic comparison, mutational analysis and stepwise truncation. A novel DNAzyme truncation method incorporated a nick in the middle of the DNAzyme to allow for truncation close to the nicked site while preserving peripheral sequences at both ends of the DNAzyme. The results demonstrate that peripheral sequences within the substrate binding arms, most notably the stem loop, loop II, are sufficient to restore its selectivity for Co(2+) over Pb(2+) to levels observed in clone 11. A comparison of these sequences' secondary structures and Co(2+) selectivities suggested that metastable structures affect metal ion selectivity. The Co(2+) selectivity of the clone 11 DNAzyme showed that the metal ion binding and selectivities of small, in vitro selected DNAzymes may be more complex than previously appreciated, and that clone 11 may be more similar to larger ribozymes than to other small DNAzymes in its structural complexity and behavior. These factors should be taken into account when metal-ion selectivity is required in rationally designed DNAzymes and DNAzyme-based biosensors.
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Affiliation(s)
- Kevin E. Nelson
- Department of Biochemistry, University of Illinois, 600 South Mathews Avenue, Urbana, IL 61801 (USA)
- Department of Pediatrics, Primary Children’s Medical Center, University of Utah, 100 North Mario Capecchi Drive, Salt Lake City, UT 84113 (USA)
| | - Hannah E. Ihms
- Department of Chemistry, University of Illinois, A322 Chemical and Life Sciences Laboratory, MC-712, Box 8–6, 600 South Mathews Avenue, Urbana, IL 61801 (USA)
| | - Debapriya Mazumdar
- Department of Chemistry, University of Illinois, A322 Chemical and Life Sciences Laboratory, MC-712, Box 8–6, 600 South Mathews Avenue, Urbana, IL 61801 (USA)
| | - Peter J. Bruesehoff
- Department of Chemistry, University of Illinois, A322 Chemical and Life Sciences Laboratory, MC-712, Box 8–6, 600 South Mathews Avenue, Urbana, IL 61801 (USA)
| | - Yi Lu
- Department of Biochemistry, University of Illinois, 600 South Mathews Avenue, Urbana, IL 61801 (USA)
- Department of Chemistry, University of Illinois, A322 Chemical and Life Sciences Laboratory, MC-712, Box 8–6, 600 South Mathews Avenue, Urbana, IL 61801 (USA)
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131
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Xie Z, Yu Z, Chen Y, Lu G, Guo Z, He W. DNA cleavage behavior of a new p-xylyl spaced bisCu(BPA)Cl2 complex: the steric effect of a bulky p-xylyl-derived spacer. NEW J CHEM 2012. [DOI: 10.1039/c1nj20793h] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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132
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Prisecaru A, Devereux M, Barron N, McCann M, Colleran J, Casey A, McKee V, Kellett A. Potent oxidative DNA cleavage by the di-copper cytotoxin: [Cu2(μ-terephthalate)(1,10-phen)4]2+. Chem Commun (Camb) 2012; 48:6906-8. [DOI: 10.1039/c2cc31023f] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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133
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Wei L, Shao Y, Zhou M, Hu HW, Lu GY. Synthesis and enhanced DNA cleavage activities of bis-tacnorthoamide derivatives. Org Biomol Chem 2012; 10:8484-92. [DOI: 10.1039/c2ob25743b] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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134
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Krishnamoorthy P, Sathyadevi P, Muthiah PT, Dharmaraj N. Nickel and cobalt complexes of benzoic acid (2-hydroxy-benzylidene)-hydrazide ligand: synthesis, structure and comparative in vitro evaluations of biological perspectives. RSC Adv 2012. [DOI: 10.1039/c2ra20597a] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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135
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He Y, Lu Y. Metal-ion-dependent folding of a uranyl-specific DNAzyme: insight into function from fluorescence resonance energy transfer studies. Chemistry 2011; 17:13732-42. [PMID: 22052817 DOI: 10.1002/chem.201100352] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2011] [Revised: 07/25/2011] [Indexed: 01/28/2023]
Abstract
Fluorescence resonance energy transfer (FRET) has been used to study the global folding of an uranyl (UO(2)(2+))-specific 39E DNAzyme in the presence of Mg(2+), Zn(2+), Pb(2+), or UO(2)(2+). At pH 5.5 and physiological ionic strength (100 mM Na(+)), two of the three stems in this DNAzyme folded into a compact structure in the presence of Mg(2+) or Zn(2+). However, no folding occurred in the presence of Pb(2+) or UO(2)(2+); this is analogous to the "lock-and-key" catalysis mode first observed in the Pb(2+)-specific 8-17 DNAzyme. However, Mg(2+) and Zn(2+) exert different effects on the 8-17 and 39E DNAzymes. Whereas Mg(2+) or Zn(2+)-dependent folding promoted 8-17 DNAzyme activity, the 39E DNAzyme folding induced by Mg(2+) or Zn(2+) inhibited UO(2)(2+)-specific activity. Group IIA series of metal ions (Mg(2+), Ca(2+), Sr(2+)) also caused global folding of the 39E DNAzyme, for which the apparent binding affinity between these metal ions and the DNAzyme decreases as the ionic radius of the metal ions increases. Because the ionic radius of Sr(2+) (1.12 Å) is comparable to that of Pb(2+) (1.20 Å), but contrary to Pb(2+), Sr(2+) induces the DNAzyme to fold under identical conditions, ionic size alone cannot account for the unique folding behaviors induced by Pb(2+) and UO(2)(2+). Under low ionic strength (30 mM Na(+)), all four metal ions (Mg(2+), Zn(2+), Pb(2+), and UO(2)(2+)), caused 39E DNAzyme folding, suggesting that metal ions can neutralize the negative charge of DNA-backbone phosphates in addition to playing specific catalytic roles. Mg(2+) at low (<2 mM) concentration promoted UO(2)(2+)-specific activity, whereas Mg(2+) at high (>2 mM) concentration inhibited the UO(2)(2+)-specific activity. Therefore, the lock-and-key mode of DNAzymes depends on ionic strength, and the 39E DNAzyme is in the lock-and-key mode only at ionic strengths of 100 mM or greater.
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Affiliation(s)
- Ying He
- Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
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136
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Wang Y, Zhu Y, Wang Y, Chen G. Structural analysis of zinc-finger (TTK) + [Cu(BPA)]2+ /[Cu(IDB)]2+ + DNA complexes: an investigation by molecular dynamics simulation. J Mol Recognit 2011; 24:981-94. [PMID: 22038805 DOI: 10.1002/jmr.1146] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
In the present study, the molecular dynamics simulation technique is employed to investigate the hydrogen abstraction possibility from sugar of DNA in two designed complexes of copper-based chemical nuclease [Cu(BPA)](2+) bis(2-pyridylmethyl) amine (BPA) or [Cu(IDB)](2+) N,N-bis(2-benzimidazolylmethyl) amine (IDB) bound to the zinc finger protein Tramtrack (TTK). The simulated results show that each of the designed complexes can form a stable conformation within 30 ns of simulation time with the substrate OOH(-) and an 18-base pair (bp) DNA segment and is located in the major groove of the DNA segment. The active terminal O atom of the OOH(-) substrate is found in close proximity to the target C2'H, C3'H, C4'H or C5'H proton of the DNA in TTK + [Cu(BPA)OOH](+) + DNA or TTK + [Cu(IDB)OOH](+) + DNA complex, which is crucial to propose the hydrogen abstraction possibility that is responsible for the DNA cleavage. The positions of copper-based chemical nucleases bound to TTK may substantially influence the hydrogen abstraction possibility. The structures and sizes of ligands in copper-based nucleases are also found to have influence on the order of difficulty of the hydrogen abstraction from the sugars of DNA.
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Affiliation(s)
- Yaru Wang
- College of Chemistry, Beijing Normal University, Beijing, 100875, China
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137
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Panja A, Matsuo T, Nagao S, Hirota S. DNA Cleavage by the Photocontrolled Cooperation of ZnII Centers in an Azobenzene-Linked Dizinc Complex. Inorg Chem 2011; 50:11437-45. [DOI: 10.1021/ic201244y] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Anangamohan Panja
- Graduate School of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama,
Ikoma, Nara 630-0192, Japan
| | - Takashi Matsuo
- Graduate School of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama,
Ikoma, Nara 630-0192, Japan
| | - Satoshi Nagao
- Graduate School of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama,
Ikoma, Nara 630-0192, Japan
| | - Shun Hirota
- Graduate School of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama,
Ikoma, Nara 630-0192, Japan
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138
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139
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Oxidative DNA Damage Induced by a Copper(II)1,10-PhenanthrolineL-Serine Complex in the Presence of Rutin. Chem Biodivers 2011; 8:1333-43. [DOI: 10.1002/cbdv.201000308] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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140
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Aiba Y, Sumaoka J, Komiyama M. Artificial DNA cutters for DNA manipulation and genome engineering. Chem Soc Rev 2011; 40:5657-68. [PMID: 21566825 DOI: 10.1039/c1cs15039a] [Citation(s) in RCA: 121] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
This tutorial review provides recent developments in artificial cutters for site-selective scission of DNA with the focus on chemistry-based DNA cutters. They are useful tools for molecular biology and biotechnology, since their site-selectivity of scission is much higher than that of naturally occurring restriction enzymes and also their scission site is freely chosen. In order to prepare these cutters, a DNA-cutting molecule is combined with a sequence-recognizing molecule in a covalent or non-covalent way. At targeted sites in single-stranded and double-stranded DNAs, the scission occurs via either oxidative cleavage of nucleotides or hydrolysis of phosphodiester linkages. Among many successful examples, an artificial restriction DNA cutter, prepared from Ce(iv)/EDTA and pseudo-complementary peptide nucleic acid, hydrolyzed double-stranded DNA at the target site. The scission site and scission specificity are determined simply in terms of the Watson-Crick rule so that even the whole genome of human beings was selectively cut at one predetermined site. Consistently, homologous recombination in human cells was successfully promoted by this tool. For the purpose of comparison, protein-based DNA cutters (e.g., zinc finger nucleases) are also briefly described. The potential applications of these cutters and their future aspects are discussed.
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Affiliation(s)
- Yuichiro Aiba
- Research Center for Advanced Science and Technology, The University of Tokyo, Tokyo, 153-8904, Japan
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141
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Tjioe L, Meininger A, Joshi T, Spiccia L, Graham B. Efficient Plasmid DNA Cleavage by Copper(II) Complexes of 1,4,7-Triazacyclononane Ligands Featuring Xylyl-Linked Guanidinium Groups. Inorg Chem 2011; 50:4327-39. [DOI: 10.1021/ic102301n] [Citation(s) in RCA: 114] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Linda Tjioe
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
| | - Anja Meininger
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
| | - Tanmaya Joshi
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
| | - Leone Spiccia
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
| | - Bim Graham
- Medicinal Chemistry and Drug Action, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
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142
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Ramakrishnan S, Suresh E, Riyasdeen A, Akbarsha MA, Palaniandavar M. DNA binding, prominent DNA cleavage and efficient anticancer activities of tris(diimine)iron(II) complexes. Dalton Trans 2011; 40:3524-36. [PMID: 21369607 DOI: 10.1039/c0dt00466a] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The complexes rac-[Fe(diimine)(3)](ClO(4))(2)1-4, where diimine = 2,2'-bipyridine (bpy) 1, 1,10-phenanthroline (phen) 2, 5,6-dimethyl-1,10-phenanthroline (5,6-dmp) 3 and dipyrido[3,2-d:2',3'-f]quinoxaline (dpq) 4, have been isolated, characterized and their interaction with calf thymus DNA studied by using a host of physical methods. The X-ray crystal structure of rac-[Fe(5,6-dmp)(3)](ClO(4))(2)3 has been determined and the packing diagram shows the presence of two enantiomeric forms of the complex cations in the same unit cell. The structures of 1-4 in solution have also been studied using UV-Visible, Cyclic Voltammetry and ESI-MS data and all data available suggests that they retain their solid state structures even in solution. The absorption spectral titrations of the iron(ii) complexes with CT DNA reveal that the DNA binding affinities of the complexes vary in the order, 4 (K(b): 9.0 × 10(3)) > 2 (6.8 × 10(3)) > 3 (4. 8 × 10(3)) > 1 (2.9 × 10(3) M(-1)). The DNA interaction of dpq complex (4) involves partial insertion of the extended phen ring in between the DNA base pairs, which is deeper than that of phen (2). The 5,6-dmp (3) complex is involved in groove binding in the major groove of DNA. The lower DNA binding affinity of 1 is due to electrostatic interaction of the cationic complexes with exterior phosphates of DNA. The EthBr displacement assay and DNA viscosity study support these DNA binding modes and the above trend in DNA binding affinities. The complexes of 1 and 2 show induced CD (ICD) upon interaction with CT DNA while 3 and 4 bound to DNA exhibit inversion in the positive band with the helicity band showing very small changes, which implies that 3 and 4 bind enantiopreferentially to DNA. The DNA cleavage abilities of 1-4 have been observed at 10 μM concentration of complexes in the presence of 100 μM H(2)O(2) and the DNA cleavage efficiency (> 90%) follows the order 3 > 1 > 2 > 4. The anticancer activity of 1-4 against human breast cancer cell line (MCF-7) has also been studied. The IC(50) values of the complexes at different incubation time intervals of 24 and 48 h follow the order, 3 (0.8, 0.6) < 4 (20.0, 17.0) < 2 (28.0, 22.0) < 1 (32.0, 29.0 μM). Interestingly, 3 exhibits anticancer activity more potent than 1, 2 and 4 and cisplatin for both 24 and 48 h. It induces cell death both through apoptosis and necrosis mechanisms, as revealed by morphological assessment data obtained by using AO/EB and Hoechst 33258 fluorescence staining methods.
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Affiliation(s)
- Sethu Ramakrishnan
- Center for Bioinorganic Chemistry, School of Chemistry, Bharathidasan University, Tiruchirappalli, 620 024, Tamilnadu, India
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143
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Hernández-Gil J, Ferrer Llusar S, Maldonado CR, Mareque-Rivas JC. Synergy between quantum dots and 1,10-phenanthroline-copper(II) complex towards cleaving DNA. Chem Commun (Camb) 2011; 47:2955-7. [PMID: 21240449 DOI: 10.1039/c0cc04163g] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
We have found that the DNA cleaving activity of quantum dots and 1,10-phenanthroline-Cu(II) complex is significantly enhanced when they are combined.
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Affiliation(s)
- Javier Hernández-Gil
- Departament de Química Inorgànica, Facultat de Farmàcia, Universitat de València, 46100-Burjassot, Valencia, Spain
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144
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Wang L, Ye Y, Lykourinou V, Angerhofer A, Ming LJ, Zhao Y. Metal Complexes of a Multidentate Cyclophosphazene with Imidazole-Containing Side Chains for Hydrolyses of Phosphoesters - Bimolecular vs. Intramolecular Dinuclear Pathway. Eur J Inorg Chem 2011. [DOI: 10.1002/ejic.201000668] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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145
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Kellett A, O'Connor M, McCann M, McNamara M, Lynch P, Rosair G, McKee V, Creaven B, Walsh M, McClean S, Foltyn A, O'Shea D, Howe O, Devereux M. Bis-phenanthroline copper(ii) phthalate complexes are potent in vitro antitumour agents with ‘self-activating’ metallo-nuclease and DNA binding properties. Dalton Trans 2011; 40:1024-7. [DOI: 10.1039/c0dt01607a] [Citation(s) in RCA: 81] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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146
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Chen J, Ren X, Le X, Feng X. Synthesis, Characterization and Nuclease Activity of Ternary Copper(II) Complexes Containing Dipyrido[3,2-a:2′,3′-c]-phenazine and L-α-Amino Acids. CHINESE J CHEM 2010. [DOI: 10.1002/cjoc.201090360] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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147
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Li Q, Browne WR, Roelfes G. Photoenhanced oxidative DNA cleavage with non-heme iron(II) complexes. Inorg Chem 2010; 49:11009-17. [PMID: 21058672 DOI: 10.1021/ic1014785] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
The DNA cleavage activity of iron(II) complexes of a series of monotopic pentadentate N,N-bis(2-pyridylmethyl)-N-bis(2-pyridyl)methylamine (N4Py)-derived ligands (1-5) was investigated under laser irradiation at 473, 400.8, and 355 nm in the absence of a reducing agent and compared to that under ambient lighting. A significant increase in activity was observed under laser irradiation, which is dependent on the structural characteristics of the complexes and the wavelength and power of irradiation. Under photoirradiation at 355 nm, direct double-stand DNA cleavage activity was observed with Fe(II)-1 and Fe(II)-3-5, and a 56-fold increase in the single-strand cleavage activity was observed with Fe(II)-2. Mechanistic investigations revealed that O(2)(•-), (1)O(2), and OH(•) contribute to the photoenhanced DNA cleavage activity, and that their relative contribution is dependent on the wavelength. It is proposed that the origin of the increase in activity is the photoenhanced formation of an Fe(III)OOH intermediate as the active species or precursor.
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Affiliation(s)
- Qian Li
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747AG Groningen, The Netherlands
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148
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Yue H, Zhu Y, Wang Y, Chen G. Investigation and improvement of DNA cleavage models of polyamide + Cu(II) nuclease + OOH- ligands bound to DNA. BMC STRUCTURAL BIOLOGY 2010; 10:35. [PMID: 20950488 PMCID: PMC2984560 DOI: 10.1186/1472-6807-10-35] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/21/2010] [Accepted: 10/17/2010] [Indexed: 11/10/2022]
Abstract
Background Copper nucleases as a famous class of artificial metallonucleases have attracted considerable interest in relation to their diverse potentials not only as therapeutic agents but also in genomic researches. Copper nucleases present high efficient oxidative cleavage of DNA, in which DNA strand scission occurs generally after hydrogen atom abstracted from a sugar moiety. In order to achieve the selective cleavage of DNA sequences by copper nucleases, the DNA specific recognition agents of the Dervan-type hairpin and cyclic polyamides can be considered as proper carriers of copper nucleases. Investigation of the DNA cleavage selectivity of copper nucleases assisted by the hairpin and cyclic polyamides at the molecular level has not yet been elucidated. Results We carried out a series of molecular dynamics simulations for the nuclease [Cu(BPA)]2+ or [Cu(IDB)]2+ bound to the hairpin/cyclic polyamide and associated with DNA to investigate the selective DNA cleavage properties of Cu(II)-based artificial nucleases. The simulated results demonstrate that the DNA cleavage selectivity of the two nucleases assisted by the hairpin polyamide is improved efficiently. The [Cu(BPA)]2+ or [Cu(IDB)]2+ nuclease with a substrate OOH- bound to the hairpin polyamide can be stably located at the minor groove of DNA, and possibly abstracts H atom from the sugar of DNA. However, the DNA cleavage properties of the two nucleases assisted by the cyclic polyamide are significantly poor due to the rigidity of linking region between the cyclic polyamide and nuclease. With introduction of the flexible linker -CH2CH2CH2NH2, the modified cyclic polyamide can assist the two copper nucleases to improve the selective DNA cleavage properties efficiently. Conclusion A flexible linker and a proper binding site of the polyamide-type recognition agents play an important role in improving the DNA cleavage selectivity of copper nucleases. Current investigations provide an insight into the DNA cleavage specificities of chemical nucleases assisted by an appropriate nucleic acid recognition agent.
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Affiliation(s)
- Hongwei Yue
- College of Chemistry, Beijing Normal University, Beijing100875, China
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149
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Efficient syntheses of artificial nucleases containing mono-, di- and tri-[12]aneN3 ligating units through click chemistry. INORG CHEM COMMUN 2010. [DOI: 10.1016/j.inoche.2010.06.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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150
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Wang JT, Zheng XH, Ji LN, Mao ZW. High nuclease activity of a copper(II)-bipyridyl complex containing cytosine pendants. J COORD CHEM 2010. [DOI: 10.1080/00958972.2010.492216] [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]
Affiliation(s)
- Jin-Tao Wang
- a MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-Sen University , Guangzhou 510275, P.R. China
| | - Xiao-Hui Zheng
- a MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-Sen University , Guangzhou 510275, P.R. China
| | - Liang-Nian Ji
- a MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-Sen University , Guangzhou 510275, P.R. China
| | - Zong-Wan Mao
- a MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-Sen University , Guangzhou 510275, P.R. China
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