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Nagaraj K, Priyanshi J, Govindasamy C, Sivakumar AS, Kamalesu S, Naman J, Dixitkumar M, Lokhandwala S, Parekh NM, Radha S, Uthra C, Vaishnavi E, Sakthinathan S, Chiu TW, Karuppiah C. Effect of hydrophobicity and size of the ligands on the intercalative binding interactions of some metallo-surfactants containing π-conjugated systems with yeast tRNA. J Biomol Struct Dyn 2024; 42:3949-3957. [PMID: 37254288 DOI: 10.1080/07391102.2023.2216783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Accepted: 05/16/2023] [Indexed: 06/01/2023]
Abstract
The intercalative yeast t-RNA binding behavior of some metallo-surfactant complexes, Co(ip)2(TA)2](ClO4)3 (1) and [Co(dpq)2(TA)2](ClO4)3 (2) where TA = Tetradecylamine (Myristylamine), ip = imidazo[4,5-f][1,10]phenanthroline and dpq = dipyrido[3,2-d:2'-3'-f]quinoxaline containing π-conjugated systems (both below and above critical micelle concentration) have been investigated by means of absorption spectral titration, competitive binding, circular dichroism, cyclic voltammetry, and viscometry measurements. Absorption spectral titration results implicate yeast tRNA has significant effects on the binding behaviors of two surfactant complexes via intercalative mode showed a significant absorption band of hypochromicity with red shift. The intrinsic binding constant values below and above CMC were determined as Kb = 6.12 × 105 M-1, 2.31 × 106 M-1, for complex (1) and 7.23 × 105 M-1, 3.57 × 106 M-1, for complex (2). In both sets of complexes (1) and (2), the complexes bind more strongly to yeast tRNA in the above critical micelle concentration can be hydrophobic and confirm intercalation. Competitive displacement studies confirmed that complexes bind to yeast tRNA via intercalative mode. Cyclic voltammetry studies suggest the increasing amounts of yeast tRNA, the cathodic potential Epc for the two complexes shows a positive shift in peak potential indicated the process of binding via intercalation. These observations were further validated by CD, and hydrodynamic measurements. All these studies suggesting that a surfactant complex binds to yeast tRNA appear to be mainly intercalative because of hydrophobicity due to extending aromaticity of the π system of the ligand and planarity of the complex has a significant effect on tRNA binding affinity increasing in the order of complexes containing ligands ip < dpq.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Karuppiah Nagaraj
- SRICT-Institute of Science and Research, Department of Chemistry, UPL University of Sustainable Technology, Vataria, India
| | - Jigeshkumar Priyanshi
- SRICT-Institute of Science and Research, Department of Chemistry, UPL University of Sustainable Technology, Vataria, India
| | - Chandramohan Govindasamy
- Department of Community Health Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Allur Subramaniyan Sivakumar
- Department of Orthopaedic Surgery, Dongtan Sacred Heart Hospital, Hallym University, College of Medicine, Hwaseong, Republic of Korea
| | - Supramanium Kamalesu
- Department of Chemistry, University of Science, Chandigarh University, Gharuan, India
| | - Jitendrabhai Naman
- SRICT-Institute of Science and Research, Department of Chemistry, UPL University of Sustainable Technology, Vataria, India
| | - Manojkumar Dixitkumar
- SRICT-Institute of Science and Research, Department of Chemistry, UPL University of Sustainable Technology, Vataria, India
| | - Snehal Lokhandwala
- Department of Environmental Science & Technology, UPL University of Sustainable Technology, Vataria, India
| | - Nikhil M Parekh
- SRICT-Institute of Science and Research, Department of Chemistry, UPL University of Sustainable Technology, Vataria, India
| | - Suriyan Radha
- Department of Chemistry, Saiva Bhanu Kshatriya College, Aruppukkottai, India
| | - Chandrabose Uthra
- Department of Microbiology, Bharathidasan University, Tiruchirapalli, India
| | - Ellappan Vaishnavi
- Department of Chemistry, Sri GVG Visalakshi College for Women, Udumalpet, India
| | - Subramanian Sakthinathan
- Department of Materials and Mineral Resources Engineering, National Taipei University of Technology, Taipei, Taiwan, ROC
| | - Te-Wei Chiu
- Department of Materials and Mineral Resources Engineering, National Taipei University of Technology, Taipei, Taiwan, ROC
| | - Chelladurai Karuppiah
- Battery Research Center for Green Energy, Ming Chi University of Technology, New Taipei City, Taiwan, ROC
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Rana M, Fatima A, Siddiqui N, Ahmedi S, Dar SH, Manzoor N, Javed S, Rahisuddin. Carbothioamide Based Pyrazoline Derivative: Synthesis, Single Crystal Structure, DFT/TD-DFT, Hirshfeld Surface Analysis and Biological Studies. Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2022.2112707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Affiliation(s)
- Manish Rana
- Department of Chemistry, Jamia Millia Islamia, New Delhi, India
| | - Aysha Fatima
- S.O.S in Chemistry, Jiwaji University, Gwalior, India
| | | | - Saiema Ahmedi
- Department of Biosciences, Jamia Millia Islamia, New Delhi, India
| | | | - Nikhat Manzoor
- Department of Biosciences, Jamia Millia Islamia, New Delhi, India
| | - Saleem Javed
- Department of Chemistry, Institute of H. Science, Dr. Bhimrao Ambedkar University, Agra, India
| | - Rahisuddin
- Department of Chemistry, Jamia Millia Islamia, New Delhi, India
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3
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Yin H, Cheng F, Liu Z, He C, Yang Y, Wang K. Preparation, characterization, pH titration, and electrochemical properties of an anthracene-bridged binuclear ruthenium complex containing imidazole. J COORD CHEM 2019. [DOI: 10.1080/00958972.2019.1678031] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Hongju Yin
- College of Chemistry and Chemical Engineering, Qujing Normal University, Qujing, China
| | - Feixiang Cheng
- College of Chemistry and Chemical Engineering, Qujing Normal University, Qujing, China
| | - Zining Liu
- College of Chemistry and Chemical Engineering, Qujing Normal University, Qujing, China
| | - Chixian He
- College of Chemistry and Chemical Engineering, Qujing Normal University, Qujing, China
| | - Yuting Yang
- College of Chemistry and Chemical Engineering, Qujing Normal University, Qujing, China
| | - Kezhi Wang
- College of Chemistry, Beijing Normal University, Beijing, China
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4
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Yin HJ, Zhang AG, Gao LH, Zhao H, Wang KZ. DNA groove-binding and acid-base properties of a Ru(II) complex containing anthryl moieties. NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS 2019; 39:592-614. [PMID: 31566116 DOI: 10.1080/15257770.2019.1669804] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
DNA groove binders have been poorly studied as compared to the intercalators. A novel Ru(II) complex of [Ru(aeip)2(Haip)](PF6)2 {Haip = 2-(9-anthryl)-1H-imidazo[4,5-f][1,10]phenanthroline and aeip = 2-(anthracen-9-yl)-1-ethyl-imidazo[4,5-f][1, 10]phenanthroline} is synthesized and characterized by elemental analysis, 1H NMR spectroscopy and mass spectrometry. The complex is evidenced to be a calf-thymus DNA groove binder with a large intrinsic binding constant of 106 M-1 order of magnitude as supported by UV-visible absorption spectral titrations, salt effects, DNA competitive binding with ethidium bromide, DNA melting experiment, DNA viscosity measurements and density functional theory calculations. The acid-base properties of the complex studied by UV-Vis spectrophotometric titrations are reported as well.
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Affiliation(s)
- Hong-Ju Yin
- Key Laboratory of Radiopharmaceuticals, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing, People's Republic of China.,College of Chemistry and Chemical Engineering, Qujing Normal University, Qujing, China
| | - An-Guo Zhang
- Key Laboratory of Radiopharmaceuticals, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing, People's Republic of China
| | - Li-Hua Gao
- School of Science, Beijing Technology and Business University, Beijing, China
| | - Hua Zhao
- School of Science, Beijing Technology and Business University, Beijing, China
| | - Ke-Zhi Wang
- Key Laboratory of Radiopharmaceuticals, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing, People's Republic of China
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5
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A combined experimental and computational study of a ruthenium(II) polypyridyl complex: Synthesis, characterization, electronic structures and spectral properties. Polyhedron 2018. [DOI: 10.1016/j.poly.2018.06.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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6
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Mardanya S, Mondal D, Baitalik S. Bimetallic Ru(ii) and Os(ii) complexes based on a pyrene-bisimidazole spacer: synthesis, photophysics, electrochemistry and multisignalling DNA binding studies in the near infrared region. Dalton Trans 2018; 46:17010-17024. [PMID: 29184930 DOI: 10.1039/c7dt03355a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
We report in this paper the synthesis, characterization, photophysical and electrochemical properties, and detailed DNA binding affinities of two homobimetallic Ru(ii) and Os(ii) complexes derived from a new bridging ligand consisting of two pyridyl-imidazole coordinating units rigidly coupled with a central pyrene moiety. The structure of the diruthenium complex was confirmed by X-ray crystallography. Both complexes exhibit luminescence at room temperature from their 3MLCT states, with lifetimes of τ1 = 12.6 ns and τ2 = 48.8 ns for the Ru(ii) complex (1) and τ1 = 23.7 ns for the Os(ii) complex (2). For 2, the luminescence maximum stretches to the NIR region, which is suitable for potential biological applications. Both complexes exhibit two successive one-electron reversible metal-centered oxidations in the positive potential window. Computational studies employing DFT and TD-DFT methods were also performed to assign the experimentally observed optical spectral bands in the complexes. The binding affinities of the complexes towards DNA were thoroughly investigated through a variety of techniques, viz. absorption, luminescence, excited state lifetime, circular dichroism, thermal denaturation, viscosity measurement, and relative DNA binding studies using ethidium bromide. Finally, molecular docking studies were also carried out to visualize the modes of interaction between the complexes and DNA.
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Affiliation(s)
- Sourav Mardanya
- Department of Chemistry, Inorganic Chemistry Section, Jadavpur University, Kolkata 700032, India.
| | - Debiprasad Mondal
- Department of Chemistry, Inorganic Chemistry Section, Jadavpur University, Kolkata 700032, India.
| | - Sujoy Baitalik
- Department of Chemistry, Inorganic Chemistry Section, Jadavpur University, Kolkata 700032, India.
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7
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Cation-dependent structural diversity of zinc(II), calcium(II) mono- and binuclear complexes of aryl-imidazo-1,10-phenanthroline derivatives. Inorganica Chim Acta 2016. [DOI: 10.1016/j.ica.2016.02.029] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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8
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Mardanya S, Karmakar S, Mondal D, Baitalik S. Homo- and Heterobimetallic Ruthenium(II) and Osmium(II) Complexes Based on a Pyrene-Biimidazolate Spacer as Efficient DNA-Binding Probes in the Near-Infrared Domain. Inorg Chem 2016; 55:3475-89. [PMID: 27011117 DOI: 10.1021/acs.inorgchem.5b02912] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report in this work a new family of homo- and heterobimetallic complexes of the type [(bpy)2M(Py-Biimz)M'(II)(bpy)2](2+) (M = M' = Ru(II) or Os(II); M = Ru(II) and M' = Os(II)) derived from a pyrenyl-biimidazole-based bridge, 2-imidazolylpyreno[4,5-d]imidazole (Py-BiimzH2). The homobimetallic Ru(II) and Os(II) complexes were found to crystallize in monoclinic form with space group P21/n. All the complexes exhibit strong absorptions throughout the entire UV-vis region and also exhibit luminescence at room temperature. For osmium-containing complexes (2 and 3) both the absorption and emission band stretched up to the NIR region and thus afford more biofriendly conditions for probable applications in infrared imaging and phototherapeutic studies. Detailed luminescence studies indicate that the emission originates from the respective (3)MLCT excited state mainly centered in the [M(bpy)2](2+) moiety of the complexes and is only slightly affected by the pyrene moiety. The bimetallic complexes show two successive one-electron reversible metal-centered oxidations in the positive potential window and several reduction processes in the negative potential window. An efficient intramolecular electronic energy transfer is found to occur from the Ru center to the Os-based component in the heterometallic dyad. The binding studies of the complexes with DNA were thoroughly studied through different spectroscopic techniques such as UV-vis absorption, steady-state and time-resolved emission, circular dichroism, and relative DNA binding study using ethidium bromide. The intercalative mode of binding was suggested to be operative in all cases. Finally, computational studies employing DFT and TD-DFT were also carried out to interpret the experimentally observed absorption and emission bands of the complexes.
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Affiliation(s)
- Sourav Mardanya
- Department of Chemistry, Inorganic Chemistry Section, Jadavpur University , Kolkata 700032, India
| | - Srikanta Karmakar
- Department of Chemistry, Inorganic Chemistry Section, Jadavpur University , Kolkata 700032, India
| | - Debiprasad Mondal
- Department of Chemistry, Inorganic Chemistry Section, Jadavpur University , Kolkata 700032, India
| | - Sujoy Baitalik
- Department of Chemistry, Inorganic Chemistry Section, Jadavpur University , Kolkata 700032, India
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9
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Liu P, Wu BY, Liu J, Dai YC, Wang YJ, Wang KZ. DNA Binding and Photocleavage Properties, Cellular Uptake and Localization, and in-Vitro Cytotoxicity of Dinuclear Ruthenium(II) Complexes with Varying Lengths in Bridging Alkyl Linkers. Inorg Chem 2016; 55:1412-22. [DOI: 10.1021/acs.inorgchem.5b01934] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ping Liu
- Beijing Key Laboratory of Energy Conversion and Storage Materials,
and Key Laboratory of Radiopharmaceuticals, Ministry of Education,
College of Chemistry, and ‡College of Life Sciences, Beijing Normal University, Beijing 100875, P.R. China
| | - Bao-Yan Wu
- Beijing Key Laboratory of Energy Conversion and Storage Materials,
and Key Laboratory of Radiopharmaceuticals, Ministry of Education,
College of Chemistry, and ‡College of Life Sciences, Beijing Normal University, Beijing 100875, P.R. China
| | - Jin Liu
- Beijing Key Laboratory of Energy Conversion and Storage Materials,
and Key Laboratory of Radiopharmaceuticals, Ministry of Education,
College of Chemistry, and ‡College of Life Sciences, Beijing Normal University, Beijing 100875, P.R. China
| | - Yong-Cheng Dai
- Beijing Key Laboratory of Energy Conversion and Storage Materials,
and Key Laboratory of Radiopharmaceuticals, Ministry of Education,
College of Chemistry, and ‡College of Life Sciences, Beijing Normal University, Beijing 100875, P.R. China
| | - You-Jun Wang
- Beijing Key Laboratory of Energy Conversion and Storage Materials,
and Key Laboratory of Radiopharmaceuticals, Ministry of Education,
College of Chemistry, and ‡College of Life Sciences, Beijing Normal University, Beijing 100875, P.R. China
| | - Ke-Zhi Wang
- Beijing Key Laboratory of Energy Conversion and Storage Materials,
and Key Laboratory of Radiopharmaceuticals, Ministry of Education,
College of Chemistry, and ‡College of Life Sciences, Beijing Normal University, Beijing 100875, P.R. China
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10
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He Y, Shang Y, Liu Y, Zhao S, Liu H. Melting dynamics of short dsDNA chains in saline solutions. SPRINGERPLUS 2015; 4:777. [PMID: 26697287 PMCID: PMC4679706 DOI: 10.1186/s40064-015-1581-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Accepted: 12/02/2015] [Indexed: 11/10/2022]
Abstract
DNA melting has attracted much attention due to its importance in understanding the life-reproduction and metabolism and in the applications of modern DNA-based technologies. While numerous works have been contributed to the determination of melting profiles in diverse environments, the understanding of DNA melting dynamics is still limited. By employing three-site-per-nucleotide (3SPN) double-stranded DNA (dsDNA) model, we here demonstrate the melting dynamics of an isolated short dsDNA under different conditions (different temperatures, ionic concentrations and DNA chain lengths) can be accessed by coarse-grained simulation studies. We particularly show that at dilute ionic concentration the dsDNA, regardless being symmetric or asymmetric, opens at both ends with roughly equal probabilities, while at high ionic concentration the asymmetric dsDNA chain opens at the A-T-rich end. The comparisons of our simulation results to available data are discussed, and overall good agreements have been found.
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Affiliation(s)
- Yichen He
- State Key Laboratory of Chemical Engineering and Department of Chemistry, East China University of Science and Technology, Shanghai, 200237 China
| | - Yazhuo Shang
- State Key Laboratory of Chemical Engineering and Department of Chemistry, East China University of Science and Technology, Shanghai, 200237 China
| | - Yu Liu
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237 China
| | - Shuangliang Zhao
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237 China
| | - Honglai Liu
- State Key Laboratory of Chemical Engineering and Department of Chemistry, East China University of Science and Technology, Shanghai, 200237 China
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11
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Liu XW, Shu JS, Xiao Y, Shen YM, Zhang SB, Lu JL. DNA binding, photocleavage behavior, and topoisomerase I inhibitory activity of Ru(II) complexes incorporating an asymmetric phenazine-type ligand. J COORD CHEM 2015. [DOI: 10.1080/00958972.2015.1057132] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Xue-Wen Liu
- College of Chemistry and Chemical Engineering, Hunan University of Arts and Science, ChangDe, PR China
| | - Jun-Shi Shu
- College of Chemistry and Chemical Engineering, Hunan University of Arts and Science, ChangDe, PR China
| | - Yang Xiao
- College of Chemistry and Chemical Engineering, Hunan University of Arts and Science, ChangDe, PR China
| | - You-Ming Shen
- College of Chemistry and Chemical Engineering, Hunan University of Arts and Science, ChangDe, PR China
| | - Song-Bai Zhang
- College of Chemistry and Chemical Engineering, Hunan University of Arts and Science, ChangDe, PR China
| | - Ji-Lin Lu
- College of Chemistry and Chemical Engineering, Hunan University of Arts and Science, ChangDe, PR China
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12
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Harvey DJ. Analysis of carbohydrates and glycoconjugates by matrix-assisted laser desorption/ionization mass spectrometry: an update for 2009-2010. MASS SPECTROMETRY REVIEWS 2015; 34:268-422. [PMID: 24863367 PMCID: PMC7168572 DOI: 10.1002/mas.21411] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2013] [Revised: 07/16/2013] [Accepted: 07/16/2013] [Indexed: 05/07/2023]
Abstract
This review is the sixth update of the original article published in 1999 on the application of MALDI mass spectrometry to the analysis of carbohydrates and glycoconjugates and brings coverage of the literature to the end of 2010. General aspects such as theory of the MALDI process, matrices, derivatization, MALDI imaging, arrays and fragmentation are covered in the first part of the review and applications to various structural typed constitutes the remainder. The main groups of compound that are discussed in this section are oligo and polysaccharides, glycoproteins, glycolipids, glycosides and biopharmaceuticals. Many of these applications are presented in tabular form. Also discussed are medical and industrial applications of the technique, studies of enzyme reactions and applications to chemical synthesis.
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Affiliation(s)
- David J. Harvey
- Department of BiochemistryOxford Glycobiology InstituteUniversity of OxfordOxfordOX1 3QUUK
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13
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Liu XW, Shen YM, Li ZX, Zhong X, Chen YD, Zhang SB. Study on DNA binding behavior and light switch effect of new coumarin-derived Ru(II) complexes. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 149:150-156. [PMID: 25956327 DOI: 10.1016/j.saa.2015.04.063] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2014] [Revised: 04/15/2015] [Accepted: 04/21/2015] [Indexed: 06/04/2023]
Abstract
A new ligand mhcip (mhcip=2-(4-methyl-7-hydroxyl-8-coumarinyl)imidazo[4,5-f]-[1,10]phenanthroline) and its ruthenium complexes, [Ru(L)2mhcip](2+) (L=bpy (2,2'-bipyridine), phen (1,10-phenanthroline)), have been synthesized and characterized. The introduction of coumarin ring may play an important role in the strong fluorescence of the complexes. Intercalative binding mode between both complexes and CT-DNA was determined by UV-visible spectroscopy, fluorescence spectroscopy and viscosity measurements. The two complexes show efficient DNA photocleavage under irradiation at 365 nm. The cycling of light switch off and on has been achieved for both complexes through the introduction of Cu(2+) and EDTA in the absence or presence of DNA.
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Affiliation(s)
- Xue-Wen Liu
- College of Chemistry and Chemical Engineering, Hunan University of Arts and Science, ChangDe 415000, PR China.
| | - You-Ming Shen
- College of Chemistry and Chemical Engineering, Hunan University of Arts and Science, ChangDe 415000, PR China.
| | - Zhi-Xin Li
- College of Chemistry and Chemical Engineering, Hunan University of Arts and Science, ChangDe 415000, PR China
| | - Xiao Zhong
- College of Chemistry and Chemical Engineering, Hunan University of Arts and Science, ChangDe 415000, PR China
| | - Yuan-Dao Chen
- College of Chemistry and Chemical Engineering, Hunan University of Arts and Science, ChangDe 415000, PR China
| | - Song-Bai Zhang
- College of Chemistry and Chemical Engineering, Hunan University of Arts and Science, ChangDe 415000, PR China
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14
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Liu X, Li Z, Hu X, Zhang S, Lu J. DNA interaction and photocleavage properties of Ru (II) complexes [Ru(bpy)₂(pibi)]²⁺ and [Ru(phen)₂(pibi)]²⁺. NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS 2015; 33:519-35. [PMID: 25009987 DOI: 10.1080/15257770.2014.900183] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
A new asymmetry ligand pibi (pibi = 2-(pyridine-2-yl)-1-H-imidazo[4,5-f]benzo[d]imidazolone) and its ruthenium complexes with [Ru(L)2(pibi)](2+) (L = bpy (2, 2'-bipyridine), phen (1, 10-phenanthroline)), have been synthesized and characterized. The binding of two complexes with calf thymus DNA has been investigated by spectroscopic and viscosity measurement. The results indicate that both complexes can bind to CT-DNA through intercalative mode. Under irradiation at 365 nm, both complexes can partly promote the photocleavage of plasmid pBR322DNA. The low singlet oxygen generation abilities of the two complexes may be the factor for the low DNA photocleavage abilities.
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Affiliation(s)
- XueWen Liu
- a College of Chemistry and Chemical Engineering , Hunan University of Arts and Science , ChangDe , P.R. China
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15
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Mardanya S, Karmakar S, Maity D, Baitalik S. Ruthenium(II) and Osmium(II) Mixed Chelates Based on Pyrenyl–Pyridylimidazole and 2,2′-Bipyridine Ligands as Efficient DNA Intercalators and Anion Sensors. Inorg Chem 2014; 54:513-26. [DOI: 10.1021/ic502271k] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Sourav Mardanya
- Department of Chemistry,
Inorganic Chemistry Section, Jadavpur University, Kolkata 700032, India
| | - Srikanta Karmakar
- Department of Chemistry,
Inorganic Chemistry Section, Jadavpur University, Kolkata 700032, India
| | - Dinesh Maity
- Department of Chemistry,
Inorganic Chemistry Section, Jadavpur University, Kolkata 700032, India
| | - Sujoy Baitalik
- Department of Chemistry,
Inorganic Chemistry Section, Jadavpur University, Kolkata 700032, India
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16
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Zheng ZB, Kang SY, Yi X, Zhang N, Wang KZ. Off–on–off pH luminescence switching and DNA binding properties of a free terpyridine-appended ruthenium complex. J Inorg Biochem 2014; 141:70-78. [DOI: 10.1016/j.jinorgbio.2014.08.010] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2014] [Revised: 08/22/2014] [Accepted: 08/24/2014] [Indexed: 01/09/2023]
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17
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Zheng ZB, Wu YQ, Wang KZ, Li F. pH luminescence switching, dihydrogen phosphate sensing, and cellular uptake of a heterobimetallic ruthenium(II)-rhenium(I) complex. Dalton Trans 2014; 43:3273-84. [PMID: 24356444 DOI: 10.1039/c3dt52568f] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
A new heterobimetallic ruthenium(II)-rhenium(I) complex of [Ru(bpy)2(HL)Re(CO)3Cl](ClO4)2·6H2O (RuHLRe) {bpy = 2,2'-bipyridine and HL = 2-(4-(2,6-di(pyridin-2-yl)pyridin-4-yl)phenyl)-1H-imidazo[4,5-f][1,10]phenanthroline} was synthesised and characterised by elemental analysis, proton nuclear magnetic resonance spectroscopy, and mass spectrometry. The ground- and excited-state acid-base properties of RuHLRe were studied using UV-Vis absorption spectrophotometric and spectrofluorimetric titrations in a 100 : 1 (v/v) Britton-Robinson buffer-CH3CN solution combined with luminescence lifetime measurements. The complex exhibited two-step separate protonation-deprotonation processes in both the ground and excited states. The complex acted as pH-induced "off-on-off" luminescence switches (I(on)/I(off) = 31.0 and 14.6), with one of the switching actions being driven by pH variations over the physiological pH range (5.3-8.0). Importantly, cellular imaging and cytotoxicity experiments demonstrated that RuHLRe rapidly and selectively illuminated the membrane of HeLa cells over fixed cells and exhibited reduced cytotoxicity at the imaging concentration compared to the Re(I)-free parent Ru(II) complex. In addition, RuHLRe acted as an efficient "turn on" emission sensor for H2PO4(-) and "turn off" emission sensor for F(-) and OAc(-).
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Affiliation(s)
- Ze-Bao Zheng
- College of Chemistry, Beijing Normal University, Beijing Key Laboratory of Energy Conversion and Storage Materials, Beijing 100875, P.R. China
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Zhang S, Ding Y, Wei H. Ruthenium polypyridine complexes combined with oligonucleotides for bioanalysis: a review. Molecules 2014; 19:11933-87. [PMID: 25116805 PMCID: PMC6271144 DOI: 10.3390/molecules190811933] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2014] [Revised: 07/17/2014] [Accepted: 07/28/2014] [Indexed: 02/01/2023] Open
Abstract
Ruthenium complexes are among the most interesting coordination complexes and they have attracted great attention over the past decades due to their appealing biological, catalytic, electronic and optical properties. Ruthenium complexes have found a unique niche in bioanalysis, as demonstrated by the substantial progress made in the field. In this review, the applications of ruthenium complexes coordinated with polypyridine ligands (and analogues) in bioanalysis are discussed. Three main detection methods based on electrochemistry, electrochemiluminescence, and photoluminscence are covered. The important targets, including DNA and other biologically important targets, are detected by specific biorecognition with the corresponding oligonucleotides as the biorecognition elements (i.e., DNA is probed by its complementary strand and other targets are detected by functional nucleic acids, respectively). Selected examples are provided and thoroughly discussed to highlight the substantial progress made so far. Finally, a brief summary with perspectives is included.
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Affiliation(s)
- Shuyu Zhang
- Department of Biomedical Engineering, College of Engineering and Applied Sciences, Nanjing University, Nanjing 210093, China.
| | - Yubin Ding
- Department of Biomedical Engineering, College of Engineering and Applied Sciences, Nanjing University, Nanjing 210093, China.
| | - Hui Wei
- Department of Biomedical Engineering, College of Engineering and Applied Sciences, Nanjing University, Nanjing 210093, China.
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Pulimamidi RR, Nomula R, Pallepogu R, Shaik H. Picolinic acid based Cu(II) complexes with heterocyclic bases – Crystal structure, DNA binding and cleavage studies. Eur J Med Chem 2014; 79:117-27. [DOI: 10.1016/j.ejmech.2014.03.084] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2013] [Revised: 01/27/2014] [Accepted: 03/31/2014] [Indexed: 11/29/2022]
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20
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Cheng F, Tang N, Chen J, Chen G. Luminescent pH sensor of a novel imidazole-containing hexanuclear Ru(II) polypyridyl complex. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 114:159-163. [PMID: 23770503 DOI: 10.1016/j.saa.2013.05.059] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2013] [Revised: 04/25/2013] [Accepted: 05/11/2013] [Indexed: 06/02/2023]
Abstract
Hexapodal ligand H6L containing imidazole rings has been prepared by the reaction of 1,10-phenanthroline-5,6-dione with 1,2,3,4,5,6-hexakis[(3-formylphenoxy)methyl]benzene. The Ru(II) polypyridyl complex [{Ru(bpy)2}6(μ6-H6L)](PF6)12 (bpy=2,2'-bipyridine) has been synthesized by the reaction of Ru(bpy)2Cl2·2H2O with ligand H6L. The pH effects on the UV-vis absorption and emission spectra of the complex have been studied. The ground- and excited-state ionization constants of the acid-base equilibria have been calculated according to the absorbance and emission data. The complex acts as an off-on-off luminescent pH sensor through two successive deprotonation processes of imidazole rings, with a maximum on-off ratio of 5 in buffer solution.
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Affiliation(s)
- Feixiang Cheng
- College of Chemistry and Chemical Engineering, Qujing Normal University, Qujing 655011, PR China.
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21
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Chen X, Xue LX, Ju CC, Wang KZ. The effects of linear assembly of two carbazole groups on acid-base and DNA-binding properties of a ruthenium(II) complex. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 111:196-203. [PMID: 23639737 DOI: 10.1016/j.saa.2013.04.017] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2013] [Revised: 03/24/2013] [Accepted: 04/01/2013] [Indexed: 06/02/2023]
Abstract
A novel Ru(II) complex of [Ru(bpy)2(Hbcpip)](ClO4)2 {where bpy=2,2-bipyridine, Hbcpip=2-(4-(9H-3,9'-bicarbazol-9-yl)phenyl)-1H-imidazo[4,5-f][1,10]phenanthroline} is synthesized and characterized. Calf-thymus DNA-binding properties of the complex were studied by UV-vis absorption and luminescence titrations, steady-state emission quenching by [Fe(CN)6](4-), DNA competitive binding with ethidium bromide, thermal denaturation and DNA viscosity measurements. The results indicate that the complex partially intercalated into the DNA with a binding constant of (5.5±1.4)×10(5) M(-1) in buffered 50 mM NaCl. The acid-base properties of the complex were also studied by UV-visible and luminescence spectrophotometric pH titrations, and ground- and excited-state acidity ionization constant values were derived.
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Affiliation(s)
- Xi Chen
- College of Chemistry and Beijing Key Laboratory of Energy Conversion and Storage Materials, Beijing Normal University, Beijing 100875, China
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22
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Luo JS, Zhang YY, Liu ZD, Tian YP. N, N-Diphenyl-4-(1 H-pyrrolo[1,2- f][1,10]phenanthrolin-2-yl)aniline ethanol monosolvate. Acta Crystallogr Sect E Struct Rep Online 2013; 69:o675-6. [PMID: 23723836 PMCID: PMC3647870 DOI: 10.1107/s1600536813008477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2013] [Accepted: 03/27/2013] [Indexed: 11/23/2022]
Abstract
The title compound, C32H21N4·C2H5OH, crystallized as an ethanol monosolvate. In the molecule of this phenanthroline derivative, the pyridine rings are almost coplanar, making a dihedral angle of 1.54 (13)°. The triphenylamine group, introduced as an electron donor, shows a propeller-type structure, and the dihedral angles between the benzene rings are 68.71 11), 63.92 (16) and 70.81 (15)°. In the crystal, the phenanthroline molecules are linked via the solvent molecule by N—H⋯O, O—H⋯N and C—H⋯O hydrogen bonds, leading to the formation of zigzag chains propagating along [010]. These chains are linked via C—H⋯N hydrogen bonds, forming undulating two-dimensional networks extending in the a- and b-axis directions.
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23
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Reddy PR, Shilpa A. 2-Hydroxynaphthalene-1-carbaldehyde- and 2-(aminomethyl)pyridine-based Schiff base Cu(II) complexes for DNA binding and cleavage. Chem Biodivers 2013; 9:2262-81. [PMID: 23081926 DOI: 10.1002/cbdv.201200049] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Three mononuclear Cu(II) complexes, [CuCl(naph-pa)] (1), [Cu(bipy)(naph-pa)]Cl (2), and [Cu(naph-pa)(phen)]Cl (3) ((naph-pa)=Schiff base derived from the condensation of 2-hydroxynaphthalene-1-carbaldehyde and 2-picolylamine (=2-(aminomethyl)pyridine), bipy=2,2'-bypiridine, and phen=1,10-phenanthroline) were synthesized and characterized. Complex 1 exhibits square-planar geometry, and 2 and 3 exhibit square pyramidal geometry, where Schiff base and bipy/phen act as NNO and as NN donor ligands, respectively. CT (Calf thymus)-DNA-binding studies revealed that the complexes bind through intercalative mode and show good binding propensity (intrinsic binding constant K(b): 0.98×10(5), 2.22×10(5), and 2.67×10(5) M(-1) for 1-3, resp.). The oxidative and hydrolytic DNA-cleavage activity of these complexes has been studied by gel electrophoresis: all the complexes displayed chemical nuclease activity in the presence and absence of H(2)O(2). From the kinetic experiments, hydrolytic DNA cleavage rate constants were determined as 2.48, 3.32, and 4.10 h(-1) for 1-3, respectively. It amounts to (0.68-1.14)×10(8)-fold rate enhancement compared to non-catalyzed DNA cleavage, which is impressive. The complexes display binding and cleavage propensity to DNA in the order of 3>2>1.
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24
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Yuan CL, Zhang AG, Zheng ZB, Wang KZ. The effects of structural variations of thiophene-containing Ru(II) complexes on the acid–base and DNA binding properties. J Biomol Struct Dyn 2013; 31:316-30. [DOI: 10.1080/07391102.2012.698238] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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25
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Zhao XL, Li ZS, Zheng ZB, Zhang AG, Wang KZ. pH luminescence switch, DNA binding and photocleavage, and cytotoxicity of a dinuclear ruthenium complex. Dalton Trans 2013; 42:5764-77. [DOI: 10.1039/c3dt33116d] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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26
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Cheng F, Chen J, Wang F, Tang N, Hou N, Chen G. Synthesis, characterization, and pH-induced luminescence switching of two trinuclear Ru(II) polypyridyl complexes containing imidazole. TRANSIT METAL CHEM 2012. [DOI: 10.1007/s11243-012-9604-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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27
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Zhao XL, Ma YZ, Wang KZ. Synthesis, pH-induced “on–off–on” luminescence switching, and partially intercalative DNA-binding and DNA photocleavage properties of an β-d-allopyranoside-grafted ruthenium(II) complex. J Inorg Biochem 2012; 113:66-76. [DOI: 10.1016/j.jinorgbio.2012.03.010] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2012] [Revised: 03/28/2012] [Accepted: 03/29/2012] [Indexed: 11/15/2022]
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28
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Liu XW, Chen YD, Li L. Synthesis, DNA-binding, and photocleavage properties of Ru(II) complexes containing dppz-based ligand. J COORD CHEM 2012. [DOI: 10.1080/00958972.2012.710749] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Xue-Wen Liu
- a College of Chemistry and Chemical Engineering, Hunan University of Arts and Science , ChangDe 415000 , P.R. China
- b Key Lab of Environment-Friendly Chemistry and Application in Ministry of Education , Xiangtan University , Xiangtan 411105 , P.R. China
| | - Yuan-Dao Chen
- a College of Chemistry and Chemical Engineering, Hunan University of Arts and Science , ChangDe 415000 , P.R. China
- b Key Lab of Environment-Friendly Chemistry and Application in Ministry of Education , Xiangtan University , Xiangtan 411105 , P.R. China
| | - Lin Li
- a College of Chemistry and Chemical Engineering, Hunan University of Arts and Science , ChangDe 415000 , P.R. China
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29
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Xu HH, Tao X, Li YQ, Shen YZ, Wei YH. Synthesis and characterization of a series of transition metal polypyridyl complexes and the pH-induced luminescence switch of Zn(II) and Ru(II) complexes. Polyhedron 2012. [DOI: 10.1016/j.poly.2011.11.049] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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30
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Zhang AG, Zhang YZ, Duan ZM, Wang KZ, Wei HB, Bian ZQ, Huang CH. Dual Molecular Light Switches for pH and DNA Based on a Novel Ru(II) Complex. A Non-Intercalating Ru(II) Complex for DNA Molecular Light Switch. Inorg Chem 2011; 50:6425-36. [DOI: 10.1021/ic102126m] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- An-Guo Zhang
- College of Chemistry, Beijing Normal University, Beijing 100875, P.R. China
| | - You-Zhuan Zhang
- College of Chemistry, Beijing Normal University, Beijing 100875, P.R. China
| | - Zhi-Ming Duan
- College of Chemistry, Beijing Normal University, Beijing 100875, P.R. China
| | - Ke-Zhi Wang
- College of Chemistry, Beijing Normal University, Beijing 100875, P.R. China
| | - Hui-Bo Wei
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
| | - Zu-Qiang Bian
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
| | - Chun-Hui Huang
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
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31
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32
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Zhang AG, Yang HX, Wang KZ. The Effects of Grafting of 2-Pyridyl to [Ru(bpy)2(Hpip)]2+on Acid-Base and DNA-Binding Properties: Experimental and DFT Studies. J Biomol Struct Dyn 2011; 28:955-68. [DOI: 10.1080/07391102.2011.10508621] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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33
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Chen YM, Zhang AG, Wang KZ. Cyclometalated iridium(III) complex of 6-hydroxydipyrido[3,2-a:2′,3′-c]phenazine: synthesis, and acid-base and avid DNA binding properties. Appl Organomet Chem 2011. [DOI: 10.1002/aoc.1796] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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34
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Synthesis, spectrophotometric pH titrations and DNA binding properties of a cyclometalated iridium(III) complex of tetrapyrido[3,2-a:2′,3′-c:3″,2″-h:2‴,3‴-j]phenazine. J Organomet Chem 2011. [DOI: 10.1016/j.jorganchem.2010.12.013] [Citation(s) in RCA: 20] [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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35
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Cheng F, Chen J, Wang F, Tang N, Chen L. “Off-on-off” Fluorescence pH Switch of Three Trinuclear RuII Complexes Containing Imidazole Rings. Z Anorg Allg Chem 2011. [DOI: 10.1002/zaac.201000450] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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36
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pH effects on optical and DNA binding properties of a thiophene-containing ruthenium(II) complex. Inorganica Chim Acta 2011. [DOI: 10.1016/j.ica.2011.01.039] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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37
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Ju CC, Zhang AG, Yuan CL, Zhao XL, Wang KZ. The interesting DNA-binding properties of three novel dinuclear Ru(II) complexes with varied lengths of flexible bridges. J Inorg Biochem 2011; 105:435-43. [DOI: 10.1016/j.jinorgbio.2010.12.004] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2010] [Revised: 12/11/2010] [Accepted: 12/14/2010] [Indexed: 10/18/2022]
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38
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Luo H, Wang ZP, Zhang AG, Wang KZ. Synthesis, and Acid–Base and DNA-Binding Properties of a Thiophen-Appended Ruthenium Complex. Aust J Chem 2011. [DOI: 10.1071/ch10316] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
2-(5-Phenylthiophen-2-yl)-1H-imidazo[4,5-f][1,10]phenanthroline (Hptip) and its RuII complex [Ru(bpy)2(Hptip)](PF6)2 (where bpy = 2,2′-bipyridine) have been synthesized and characterized by elemental analysis, 1H NMR spectroscopy, and mass spectrometry. The acid–base properties of the complex were studied by UV-visible and luminescence spectrophotometric pH titrations, and ground- and excited-state acidity ionization constants were derived. The DNA-binding properties of [Ru(bpy)2(Hptip)](PF6)2 were also investigated by means of UV-vis and emission spectroscopy, salt effects, steady-state emission quenching by [Fe(CN)6]4–, DNA competitive binding with ethidium bromide, DNA melting experiments, and viscosity measurements. Density functional theoretical calculations were also carried out in order to understand the DNA binding properties.
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39
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Liu XW, Shen YM, Lu JL, Chen YD, Li L, Zhang DS. Synthesis, DNA-binding and photocleavage of "light switch" complexes [Ru(bpy)2(pyip)]2+ and [Ru(phen)2(pyip)]2+. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2010; 77:522-527. [PMID: 20634127 DOI: 10.1016/j.saa.2010.06.030] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2010] [Revised: 06/04/2010] [Accepted: 06/17/2010] [Indexed: 05/29/2023]
Abstract
Two novel Ru(II) complexes [Ru(bpy)(2)(pyip)](2+)1 and [Ru(phen)(2)(pyip)](2+)2 (bpy=2,2'-bipyridine; phen=1,10-phenanthroline; pyip=2-(pyridine-2-yl)imidazo-[4,5-f][1,10]-phenanthroline), have been synthesized and characterized by elemental analysis, ES-MS, (1)H NMR, UV-Vis. The DNA-binding behaviors of both complexes were studied by spectroscopic methods and viscosity measurements. The results indicate that the two complexes can bind to CT-DNA in an intercalative mode, and also show that these two Ru(II) complexes can promote the photocleavage of pBR322 DNA. In addition, In the presence of Co(2+), the emission of DNA-[Ru(L)(2)pyip](2+) can be quenched, which exhibited the DNA "light switch" properties.
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Affiliation(s)
- Xue-Wen Liu
- College of Chemistry and Chemical Engineering, Hunan University of Arts and Science, ChangDe 415000, PR China.
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40
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Yang HX, Liu YJ, Zhao L, Wang KZ. Highly selective acetate optical sensing of a ruthenium(II) complex carrying imidazole and indole groups. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2010; 76:146-149. [PMID: 20378395 DOI: 10.1016/j.saa.2010.03.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2009] [Revised: 03/06/2010] [Accepted: 03/11/2010] [Indexed: 05/29/2023]
Abstract
The effects of addition of F(-), Cl(-), Br(-), I(-), NO(3)(-), H(2)PO(4)(-), and OAc(-) on the UV-vis and emission spectra of Ru(II) complex [Ru(bpy)(2)(H(2)iip)](ClO(4))(2) {bpy=2,2'-bipyridyl, H(2)iip=2-indole-3-yl-imidazole[4,5-f][1,10]-phenanthroline} in dimethyl sulfone were studied. The Ru(II) complex was evidenced to be a highly selective optical sensor for OAc(-). Addition of OAc(-) elicited a distinct change in color from yellow to light orange which can be detected by naked-eye, and an almost vanished emission of the Ru(II) complex at a much lower concentration of OAc(-) than those of the other anions.
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Affiliation(s)
- Huai-Xia Yang
- Pharmacy College, Henan University of Traditional Chinese Medicine, Zhengzhou 450008, China
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41
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Reddy KL, Reddy YHK, Satyanarayana S. DNA-binding and photocleavage properties of Ru(II) polypyridyl complexes with DNA and their toxicity studies on eukaryotic microorganisms. NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS 2010; 28:953-68. [PMID: 20183564 DOI: 10.1080/15257770903307060] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Four Ru(II) polypyridyl complexes, [Ru(bpy)(2)(7-NO(2)-dppz)](2+), [Ru(bpy)(2)(7-CH(3)-dppz)](2+), [Ru(phen)(2)(7-NO(2)-dppz)](2+), and [Ru(phen)(2)(7-CH(3)-dppz)](2+) (bpy = 2,2'-bipyridine, phen = 1,10-phenanthroline), (7-Nitro-dppz = 7-Nitro dipyrido[3,2-a:2'-3'-c]phenazine, 7-CH(3)-dppz = 7-Methyl dipyrido[3,2-a:2'-3'-c]phenazine), have been synthesized and characterized by IR, UV, elemental analysis, (1)H NMR, (13)C-NMR, and mass spectroscopy. The DNA-binding properties of the four complexes were investigated by spectroscopic and viscosity measurements. The results suggest that all four complexes bind to DNA via an intercalative mode. Under irradiation at 365 nm, all four complexes were found to promote the photocleavage of plasmid pBR 322 DNA. Toxicological effects of the selected complexes were performed on industrially important yeasts (eukaryotic microorganisms).
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42
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Cheng F, Tang N, Chen J, Wang F, Chen L. A new family of trinuclear Ru(II) polypyridyl complexes acting as pH-induced fluorescence switch. INORG CHEM COMMUN 2010. [DOI: 10.1016/j.inoche.2010.03.040] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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43
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Lakshmipraba J, Arunachalam S. Studies on the interactions of polymer-anchored copper(II) complexes with tRNA. TRANSIT METAL CHEM 2010. [DOI: 10.1007/s11243-010-9352-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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44
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Fan SH, Zhang AG, Ju CC, Gao LH, Wang KZ. A Triphenylamine-Grafted Imidazo[4,5-f][1,10]phenanthroline Ruthenium(II) Complex: Acid−Base and Photoelectric Properties. Inorg Chem 2010; 49:3752-63. [DOI: 10.1021/ic902100v] [Citation(s) in RCA: 79] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Su-Hua Fan
- College of Chemistry, Beijing Normal University, Beijing 100875, People’s Republic of China
| | - An-Guo Zhang
- College of Chemistry, Beijing Normal University, Beijing 100875, People’s Republic of China
| | - Chuan-Chuan Ju
- College of Chemistry, Beijing Normal University, Beijing 100875, People’s Republic of China
| | - Li-Hua Gao
- College of Chemistry and Environmental Engineering, Beijing Technology and Business University, Beijing 100037, People’s Republic of China
| | - Ke-Zhi Wang
- College of Chemistry, Beijing Normal University, Beijing 100875, People’s Republic of China
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