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Morozkov GV, Abel AS, Lyssenko KA, Roznyatovsky VA, Averin AD, Beletskaya IP, Bessmertnykh-Lemeune A. Ruthenium(II) complexes with phosphonate-substituted phenanthroline ligands as reusable photoredox catalysts. Dalton Trans 2024; 53:535-551. [PMID: 38053435 DOI: 10.1039/d3dt02936k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2023]
Abstract
Ru(II) complexes with polypyridyl ligands (2,2'-bipyridine = bpy, 1,10-phenanthroline = phen) play a central role in the development of photocatalytic organic reactions. In this work, we synthesized four mixed-ligand [Ru(phen)(bpy)2]2+-type complexes (Ru-Pcat-A) bearing two phosphonate substituents P(O)(OH)(OR) (R = H, Et) attached to the phen core at positions 3,8 (Ru-3,8PH and Ru-3,8PHEt) and 4,7 (Ru-4,7PH and Ru-4,7PHEt) of the heterocycle in high yields (87-99%) and characterized them using spectral methods. Single crystal X-ray diffraction was employed to determine the coordination mode of the ditopic phen ligand in Ru-4,7PH. This complex exists as the neutral species and forms a 1D hydrogen-bonded framework in the crystals. The light absorption characteristics were found to be similar for all complexes prepared in this work. However, the emission maxima in aqueous solutions were significantly affected by the substitution of the heterocycle, ranging from 629 nm for Ru-4,7PH to 661 nm for Ru-3,8PHEt. The emission quantum yields in Ar-saturated deionized water showed a strong dependence on the substitution pattern of the phen ligand, with maximal values reaching approximately 0.11 for Ru-4,7PHEt and Ru-4,7PH, which is twice as high as that of the classical [Ru(bpy)3]2+ complex (Ru-bpy). The photocatalytic performance of Ru-Pcat-A was investigated using visible light photoredox catalytic transformations of tertiary amines. With Ru-Pcat-A, we achieved the phosphonylation of N-aryl-1,2,3,4-tetrahydroisoquinolines (THIQs) and cyanation of THIQs and N,N-dimethylaniline in methanol, while a mixture of nitromethane/methanol (1 : 1 v/v) proved to be the optimal solvent for conducting the nitromethylation of THIQs. In the majority of the studied reactions, Ru-4,7PHEt exhibited greater efficiency compared to Ru-bpy, and it could be easily separated from the products using water extraction and reused in the next catalytic cycle. We successfully performed seven consecutive nitromethylation and phosphonylation of N-phenyl-1,2,3,4-tetrahydroisoquinoline using the recycled homogeneous photoredox catalyst.
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Affiliation(s)
- Gleb V Morozkov
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory, 1-3, Moscow 119991, Russian Federation.
| | - Anton S Abel
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory, 1-3, Moscow 119991, Russian Federation.
| | - Konstantin A Lyssenko
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory, 1-3, Moscow 119991, Russian Federation.
- National Research University Higher School of Economics, Miasnitskaya Str. 20, 101000, Moscow, Russian Federation.
| | - Vitaly A Roznyatovsky
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory, 1-3, Moscow 119991, Russian Federation.
| | - Alexei D Averin
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory, 1-3, Moscow 119991, Russian Federation.
| | - Irina P Beletskaya
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory, 1-3, Moscow 119991, Russian Federation.
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninsky Pr. 31, Moscow 119071, Russian Federation
| | - Alla Bessmertnykh-Lemeune
- ENS de Lyon, UMR 5182, CNRS, Université Claude Bernard Lyon 1, Laboratoire de Chimie, 69342 Lyon, France.
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An Integrated Analysis of Mechanistic Insights into Biomolecular Interactions and Molecular Dynamics of Bio-Inspired Cu(II) and Zn(II) Complexes towards DNA/BSA/SARS-CoV-2 3CL pro by Molecular Docking-Based Virtual Screening and FRET Detection. Biomolecules 2022; 12:biom12121883. [PMID: 36551312 PMCID: PMC9775322 DOI: 10.3390/biom12121883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 12/01/2022] [Accepted: 12/08/2022] [Indexed: 12/23/2022] Open
Abstract
Novel constructed bioactive mixed-ligand complexes (1b) [CuII(L)2(phen)] and (2b) [ZnII(L)2(phen)] {where, L = 2-(4-morpholinobenzylideneamino)phenol), phen = 1,10-phenanthroline} have been structurally analysed by various analytical and spectroscopic techniques, including, magnetic moments, thermogravimetric analysis, and X-ray crystallography. Various analytical and spectral measurements assigned showed that all complexes appear to have an octahedral geometry. Agar gel electrophoresis's output demonstrated that the Cu(II) complex (1b) had efficient deoxyribonucleic cleavage and complex (2b) demonstrated the partial cleavage accomplished with an oxidation agent, which generates spreadable OH● through the Fenton type mechanism. The DNA binding constants observed from viscosity, UV-Vis spectral, fluorometric, and electrochemical titrations were in the following sequence: (1b) > (2b) > (HL), which suggests that the complexes (1b-2b) might intercalate DNA, a possibility that is supported by the biothermodynamic measurements. In addition, the observed binding constant results of BSA by electronic absorption and fluorometric titrations indicate that complex (1b) revealed the best binding efficacy as compared to complex (2b) and free ligand. Interestingly, all compounds are found to interact with BSA through a static approach, as further attested by FRET detection. The DFT and molecular docking calculations were also performed to realize the electronic structure, reactivity, and binding capability of all test samples with CT-DNA, BSA, and the SARS-CoV-2 3CLPro, which revealed the binding energies were in a range of -8.1 to -8.9, -7.5 to -10.5 and -6.7--8.8 kcal/mol, respectively. The higher reactivity of the complexes than the free ligand is supported by the FMO theory. Among all the observed data for antioxidant properties against DPPH᛫, ᛫OH, O2-• and NO᛫ free radicals, complex (1a) had the best biological efficacy. The antimicrobial and cytotoxic characteristics of all test compounds have been studied by screening against certain selected microorganisms as well as against A549, HepG2, MCF-7, and NHDF cell lines, respectively. The observed findings revealed that the activity enhances coordination as compared to free ligand via Overtone's and Tweedy's chelation mechanisms. This is especially encouraging given that in every case, the experimental findings and theoretical detections were in perfect accord.
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Singh SB, Kumbhar AS, Walke G, Kulkarni PP. An insight into the morphology of DNA compaction induced by homobinuclear Ru(II) polypyridyl complexes. J Inorg Biochem 2022; 234:111870. [DOI: 10.1016/j.jinorgbio.2022.111870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 05/13/2022] [Accepted: 05/18/2022] [Indexed: 10/18/2022]
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4
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Grawe GF, Oliveira KM, Leite CM, de Oliveira TD, Honorato J, Ferreira AG, Castellano EE, Cominetti MR, Correa RS, Batista AA. Ruthenium(II)-diphosphine complexes containing acylthiourea ligands are effective against lung and breast cancers. Dalton Trans 2022; 51:1489-1501. [PMID: 34989381 DOI: 10.1039/d1dt02851k] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
We have synthesized and characterized three new ruthenium(II) diphosphine complexes containing an acylthiourea ligand, with the general formula [Ru(DPEPhos)(O,S)(bipy)]PF6, where DPEPhos = bis(2-(diphenylphosphino)phenyl)ether, bipy = 2,2'-bipyridine, and O,S = N,N-dimethyl-N'-(benzoyl)thiourea (1), N,N-dimethyl-N'-(furoyl)thiourea (2), and N,N-dimethyl-N'-(thiophenyl)thiourea (3), by several physicochemical techniques. We evaluated the ruthenium complexes for their cytotoxicity against two human cancer cell lines, A549 (lung) and MDA-MB-231 (breast), and two corresponding lines of non-cancer cells, MRC-5 (lung) and MCF-10A (breast). All the complexes are cytotoxic against the cancer cell lines; the IC50 values lie in the micromolar range (0.07-0.70 μM). Ruthenium complex 1 is more selective (7 times more active) toward lung cancer cells (A549) than toward non-cancer cells (MRC-5) and is 160 times more cytotoxic than cisplatin against A549 cells. Investigations of the mechanism of action of complex 1 in A549 cells demonstrated that it inhibits colony formation and promotes cell cycle arrest in the G1 phase and apoptotic cell death. DNA binding studies revealed that complexes 1-3 interact with the biomolecule via minor grooves. These complexes also interact with human serum albumin (HSA) and have affinity for site I by hydrophobic forces. Therefore, this new class of ruthenium complexes can act as cytotoxic agents, mainly for lung cancer treatment.
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Affiliation(s)
- Gregory F Grawe
- Departamento de Química, Universidade Federal de São Carlos - UFSCar, CP 676, CEP 13561-901, São Carlos, SP, Brazil.
| | - Katia M Oliveira
- Departamento de Química, ICEB, Universidade Federal de Ouro Preto - UFOP, CEP 35400-000, Ouro Preto, MG, Brazil.
| | - Celisnolia M Leite
- Departamento de Química, Universidade Federal de São Carlos - UFSCar, CP 676, CEP 13561-901, São Carlos, SP, Brazil.
| | - Tamires D de Oliveira
- Departamento de Química, Universidade Federal de São Carlos - UFSCar, CP 676, CEP 13561-901, São Carlos, SP, Brazil.
| | - João Honorato
- Departamento de Química, Universidade Federal de São Carlos - UFSCar, CP 676, CEP 13561-901, São Carlos, SP, Brazil.
| | - Antonio G Ferreira
- Departamento de Química, Universidade Federal de São Carlos - UFSCar, CP 676, CEP 13561-901, São Carlos, SP, Brazil.
| | - Eduardo E Castellano
- Instituto de Física de São Carlos, Universidade de São Paulo - USP, CP 369, CEP 13560-970, São Carlos, SP, Brazil
| | - Marcia R Cominetti
- Departamento de Gerontologia, Universidade Federal de São Carlos - UFSCar, CP 676, CEP 13565-905, São Carlos, SP, Brazil
| | - Rodrigo S Correa
- Departamento de Química, ICEB, Universidade Federal de Ouro Preto - UFOP, CEP 35400-000, Ouro Preto, MG, Brazil.
| | - Alzir A Batista
- Departamento de Química, Universidade Federal de São Carlos - UFSCar, CP 676, CEP 13561-901, São Carlos, SP, Brazil. .,Instituto de Química, Universidade Federal de Goiás - UFG, CEP 74690-900, Goiânia, GO, Brazil
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Synthesis, Characterization and Biological Properties of Ruthenium(II) Polypyridyl Complexes Containing 2(1H)-quinolinone-3(1H-imidazo[4,5f][1,10]phenanthrolin-2-yl. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.109260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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6
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Morozkov GV, Abel AS, Filatov MA, Nefedov SE, Roznyatovsky VA, Cheprakov AV, Mitrofanov AY, Ziankou IS, Averin A, Beletskaya IP, Michalak J, Bucher C, Bonneviot L, Bessmertnykh-Lemeune A. Ruthenium(II) complexes with phosphonate-substituted 1,10-phenanthroline ligands: synthesis, characterization and use in organic photocatalysis. Dalton Trans 2022; 51:13612-13630. [DOI: 10.1039/d2dt01364a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ru(II) complexes with polypyridyl ligands play a central role in the development of photocatalytic organic reactions. This work is aimed at the structural modification of such complexes to increase their...
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Bashiri M, Jarrahpour A, Nabavizadeh SM, Karimian S, Rastegari B, Haddadi E, Turos E. Potent antiproliferative active agents: novel bis Schiff bases and bis spiro β-lactams bearing isatin tethered with butylene and phenylene as spacer and DNA/BSA binding behavior as well as studying molecular docking. Med Chem Res 2020. [DOI: 10.1007/s00044-020-02659-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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8
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Kumar P, Kumar S. Copper ion luminescence on/off sensing by a quinoline-appended ruthenium(II)-polypyridyl complex in aqueous media. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127242] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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9
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Bhat SS, S. N, Revankar VK, Lokanath NK, Pinjari RV, Kumbar V, Bhat K. Synthesis, structural characterization and biological properties of cyclometalated iridium( iii) complexes containing [1,2,5]-thiadiazolo-[3,4- f]-[1,10]-phenanthroline. NEW J CHEM 2020. [DOI: 10.1039/d0nj03421e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The iridium(iii) complexes have been structurally characterised and their interaction with DNA, cytotoxicity and cellular uptake have been investigated.
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Affiliation(s)
- Satish S. Bhat
- Department of Chemistry
- Karnatak University
- Dharwad-580003
- India
| | - Naveen S.
- Department of Physics
- Faculty of Engineering & Technology
- Jain (Deemed-to-be University)
- Bangalore 562112
- India
| | | | - N. K. Lokanath
- Department of Studies in Physics
- University of Mysore
- Manasagangotri, Mysuru 570006
- India
| | - Rahul V. Pinjari
- School of Chemical Science
- Swami Ramanand Teerth
- Marathwada University
- Nanded
- India
| | - Vijay Kumbar
- Maratha Mandal's Central Research Laboratory
- Marathamandal Dental College and Research Centre
- Belgaum
- India
| | - Kishore Bhat
- Maratha Mandal's Central Research Laboratory
- Marathamandal Dental College and Research Centre
- Belgaum
- India
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10
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Yuan C, Wang W, Wang J, Li X, Wu YB, Li S, Lu L, Zhu M, Xing S, Fu X. Potent and selective PTP1B inhibition by a platinum(ii) complex: possible implications for a new antitumor strategy. Chem Commun (Camb) 2019; 56:102-105. [PMID: 31793564 DOI: 10.1039/c9cc06972k] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Showing anti-proliferation activity against MCF7 cells better than cisplatin, a platinum(ii) complex, [PtL(DMSO)Cl], was found to potently and selectively inhibit protein tyrosine phosphatase 1B (PTP1B), a putative target for anticancer agents, suggesting a new possible anticancer strategy based on platinum drugs.
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Affiliation(s)
- Caixia Yuan
- Institute of Molecular Science, Key Laboratory of Chemical Biology and Molecular Engineering of the Education Ministry, Shanxi University, Taiyuan, Shanxi 030006, P. R. China.
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11
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Tris-heteroleptic ruthenium(II) polypyridyl complexes: Synthesis, structural characterization, photophysical, electrochemistry and biological properties. J Inorg Biochem 2019; 203:110903. [PMID: 31683124 DOI: 10.1016/j.jinorgbio.2019.110903] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Revised: 10/14/2019] [Accepted: 10/18/2019] [Indexed: 01/13/2023]
Abstract
Three water-soluble tris-heteroleptic ruthenium(II) polypyridyl complexes [Ru(bpy)(phen)(bpg)]2+ (1), [Ru(bpy)(dppz)(bpg)]2+ (2), and [Ru(phen)(dppz)(bpg)]2+ (3) (where bpy = 2,2'-bipyridine, phen = 1,10-phenanthroline, dppz = dipyrido[3,2-a:2',3'-c] phenazine, bpg = 4b,5,7,7a-tetrahydro-4b,7a-epiminomethanoimino-6H-imidazo[4,5-f] [1,10] phenanthroline-6,13-dione) have been synthesized and characterized. Molecular structures of complexes 1 and 3 are confirmed by single crystal X-ray structure determination. Interaction of complexes 1-3 with DNA is explored by various spectroscopic techniques. The complexes 1-3 show solvent dependent photophysical properties. Complexes 2 and 3 show extensive "molecular light switch" effect for DNA. The complexes 1-3 are low toxic towards HeLa (human cervical cancer) and HL-60 (human promyelocytic leukemia) cell lines. Further, the cellular uptake of complexes 2 and 3 by cells shows that complexes mainly localised on the nucleus of the cells.
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Arora A, Kaushal J, Kumar A, Kumar P, Kumar S. Ruthenium(II)‐Polypyridyl‐Based Sensor Bearing a DPA Unit for Selective Detection of Cu(II) Ion in Aqueous Medium. ChemistrySelect 2019. [DOI: 10.1002/slct.201900682] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Aayushi Arora
- Department of ChemistrySchool of Physical Sciences (SoPS)Doon University Dehradun, Uttarakhand India
| | - Jolly Kaushal
- Department of ChemistrySchool of Physical Sciences (SoPS)Doon University Dehradun, Uttarakhand India
| | - Arun Kumar
- Department of ChemistrySchool of Physical Sciences (SoPS)Doon University Dehradun, Uttarakhand India
| | - Pramod Kumar
- Department of ChemistryMahamana Malviya College Khekra (Baghpat)C.C.S. University Meerut India
| | - Sushil Kumar
- Department of ChemistrySchool of Physical Sciences (SoPS)Doon University Dehradun, Uttarakhand India
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Hydrolysis reaction promotes changes in coordination mode of Ru(II)/acylthiourea organometallic complexes with cytotoxicity against human lung tumor cell lines. J Inorg Biochem 2018; 186:147-156. [DOI: 10.1016/j.jinorgbio.2018.06.007] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Revised: 05/16/2018] [Accepted: 06/11/2018] [Indexed: 01/16/2023]
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14
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Zehra S, Shavez Khan M, Ahmad I, Arjmand F. New tailored substituted benzothiazole Schiff base Cu(II)/Zn(II) antitumor drug entities: effect of substituents on DNA binding profile, antimicrobial and cytotoxic activity. J Biomol Struct Dyn 2018; 37:1863-1879. [DOI: 10.1080/07391102.2018.1467794] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Siffeen Zehra
- Department of Chemistry, Aligarh Muslim University , Aligarh
202002, Uttar Pradesh, India
| | - Mohammad Shavez Khan
- Department of Agricultural Microbiology, Aligarh Muslim University , Aligarh
202002, Uttar Pradesh, India
| | - Iqbal Ahmad
- Department of Agricultural Microbiology, Aligarh Muslim University , Aligarh
202002, Uttar Pradesh, India
| | - Farukh Arjmand
- Department of Chemistry, Aligarh Muslim University , Aligarh
202002, Uttar Pradesh, India
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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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Synthesis and characterization of two new trans palladium (II) complexes containing benzylamine ligand: DNA/BSA interactions, molecular docking and in vitro cytotoxic activity. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2017.02.027] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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17
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Bhat SS, Revankar VK, Pinjari RV, Naveen S, Lokanath NK, Kumbar V, Bhat K, Kokare DG. Phosphorescent cyclometalated iridium(iii) complexes: synthesis, photophysics, DNA interaction, cellular internalization, and cytotoxic activity. NEW J CHEM 2018. [DOI: 10.1039/c8nj03390k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Phosphorescent cyclometalated quinoline-appended iridium(iii) complexes undergo rapid cellular internalization and accumulate throughout the cell.
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Affiliation(s)
- Satish S. Bhat
- Department of Chemistry
- Karnatak University
- Dharwad-580003
- India
| | | | - Rahul V. Pinjari
- School of Chemical Science
- Swami Ramanand Teerth
- Marathwada University
- Nanded
- India
| | - S. Naveen
- Department of Physics
- School of Engineering and Technology
- Jain University
- Bangalore 562112
- India
| | - N. K. Lokanath
- Department of Studies in Physics
- University of Mysore
- Manasagangotri
- India
| | - Vijay Kumbar
- Maratha Mandal's Central Research Laboratory
- Marathamandal Dental College and Research Centre
- Belgaum
- India
| | - Kishore Bhat
- Maratha Mandal's Central Research Laboratory
- Marathamandal Dental College and Research Centre
- Belgaum
- India
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18
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Bhat SS, Revankar VK, Shivalingegowda N, Lokanath NK. A fluorophore-labelled copper complex: crystal structure, hybrid cyclic water-perchlorate cluster and biological properties. ACTA CRYSTALLOGRAPHICA SECTION C-STRUCTURAL CHEMISTRY 2017; 73:710-717. [PMID: 28872069 DOI: 10.1107/s2053229617011639] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Accepted: 08/08/2017] [Indexed: 03/06/2023]
Abstract
A fluorophore-labelled copper(II) complex, aquabis(dimethylformamide-κO)(perchlorato-κO)[2-(quinolin-2-yl)-1,3-oxazolo[4,5-f][1,10]phenanthroline]copper(II) perchlorate monohydrate, [Cu(ClO4)(C22H12N4O)(C3H7NO)2(H2O)]ClO4·H2O, has been synthesized and characterized. A cyclic hydrogen-bonded water-perchlorate anionic cluster, i.e. [(ClO4)2(H2O)2]2-, has been identified within the structure. Each cyclic anionic cluster unit is interconnected by hydrogen bonding to the cation. The cations join into an infinite hydrogen-bonded chain running in the [010] direction. Furthermore, interaction of the complex with calf-thymus DNA (CT-DNA) and cellular localization within the cells was explored. Spectroscopic studies indicate that the compound has a good affinity for DNA and stains the nucleus of the cells.
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Affiliation(s)
- Satish S Bhat
- Department of Chemistry, Karnatak University, Pavate Nagar, Dharwad, Karnataka 580 003, India
| | - Vidyanand K Revankar
- Department of Chemistry, Karnatak University, Pavate Nagar, Dharwad, Karnataka 580 003, India
| | | | - N K Lokanath
- Department of Studies in Physics, University of Mysore, Mysuru, Karnataka 570 006, India
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Singha K, Laha P, Chandra F, Dehury N, Koner AL, Patra S. Long-Lived Polypyridyl Based Mononuclear Ruthenium Complexes: Synthesis, Structure, and Azo Dye Decomposition. Inorg Chem 2017; 56:6489-6498. [PMID: 28509536 DOI: 10.1021/acs.inorgchem.7b00536] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Two mononuclear ruthenium complexes [(bpy)2RuIIL1/L2](ClO4)2 ([1]2+/[2]2+) (bpy-2,2' bipyridine, L1 = 2,3-di(pyridin-2-yl)pyrazino[2,3-f][1,10]phenanthroline) and L2 = 2,3-di(thiophen-2-yl)pyrazino[2,3-f][1,10]phenanthroline have been synthesized. The complexes have been characterized using various analytical techniques. The complex [1]2+ has further been characterized by its single crystal X-ray structure suggesting ruthenium is coordinating through the N donors of phenanthroline end. Theoretical investigation suggests that the HOMOs of both complexes are composed of pyridine and pyrazine unit of ligands L1 and L2 whereas the LUMOs are formed by the contribution of bipyridine units. The low energy bands at ∼480 nm of the complexes can be assigned as MLCT with partial contribution from ligand transitions, whereas the rest are ligand centered. The complexes have shown RuII/RuIII oxidation couples at E1/2 at 1.26 (70 mV) V and 1.28 (62 mV) V for [1]2+ and [2]2+ vs Ag/AgCl, respectively, suggesting no significant role of distal thiophene or pyridine units of the ligands. The complexes are emissive and display solvent dependent emission properties. Both complexes have shown highest emission quantum yield and lifetime in DMSO (ϕ = 0.05 and τavg = 460 ns and λmaxem at 620 nm for [1]2+; ϕ = 0.043 and τavg = 425 ns and λmaxem at 635 nm for [2]2+). Further, the long luminescent lifetime of these complexes has been utilized to generate reactive oxygen species for efficient azo dye decomposition.
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Affiliation(s)
- Koushik Singha
- School of Basic Sciences, Indian Institute of Technology Bhubaneswar , Argul 752050, India
| | - Paltan Laha
- School of Basic Sciences, Indian Institute of Technology Bhubaneswar , Argul 752050, India
| | - Falguni Chandra
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal , Bhopal By-pass Road, Bhauri, Bhopal 462 066, Madhya Pradesh, India
| | - Niranjan Dehury
- School of Basic Sciences, Indian Institute of Technology Bhubaneswar , Argul 752050, India
| | - Apurba L Koner
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal , Bhopal By-pass Road, Bhauri, Bhopal 462 066, Madhya Pradesh, India
| | - Srikanta Patra
- School of Basic Sciences, Indian Institute of Technology Bhubaneswar , Argul 752050, India
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20
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Mandegani Z, Asadi Z, Asadi M, Karbalaei-Heidari HR, Rastegari B. Synthesis, characterization, DNA binding, cleavage activity, cytotoxicity and molecular docking of new nano water-soluble [M(5-CH₂PPh₃-3,4-salpyr)](ClO₄)₂ (M = Ni, Zn) complexes. Dalton Trans 2016; 45:6592-611. [PMID: 26961248 DOI: 10.1039/c5dt04788a] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Some new water soluble complexes [N,N'-bis{5-[(triphenyl phosphonium chloride)-methyl]salicylidine}-3,4-diaminopyridine] M(ii), which are formulated as nano-[Zn(5-CH2PPh3-3,4-salpyr)](ClO4)2 (), [Zn(5-CH2PPh3-3,4-salpyr)](ClO4)2 (), nano-[Ni(5-CH2PPh3-3,4-salpyr)](ClO4)2 (), [Ni(5-CH2PPh3-3,4-salpyr)](ClO4)2 (), and [N,N'-bis{5-[(triphenyl phosphonium chloride)-methyl]salicylidine}-2,3-diaminopyridine]Ni(ii) [Ni(5-CH2PPh3-2,3-salpyr)](ClO4)2 () have been isolated and characterized by elemental analysis, FT-IR, (1)H NMR, (13)C NMR, (31)P NMR, and UV-vis spectroscopy. The morphology and size of the nano complexes were determined using FE-SEM and TEM. In vitro DNA binding studies were investigated by UV-vis absorption spectroscopy, viscosity measurements, CD spectroscopy, cyclic voltammetry, emission spectra and gel electrophoresis, which suggest that the metal complexes act as efficient DNA binders. The absorption spectroscopy of the compounds with DNA reveals that the DNA binding affinity (Kb) has this order: > > > > > Ligand. The metal complexes show DNA binding stronger than the ligand, which is expected due to the nature of the metal. The nano complexes display DNA binding stronger than the other complexes which is related to the effect of size on binding affinity and the Ni(ii) complexes reveal DNA binding stronger than the corresponding Zn(ii) analogues, which is expected due to their z* effect and geometry. The prominent double strand DNA cleavage abilities of compound are observed in the absence of H2O2 with efficiencies of more than 50% even at 70 μM complex concentration. Surprisingly, Zn(ii) complexes (compounds & ) exhibit a higher cytotoxicity (IC50: 7.3 & 10.9 μM at 24 h; IC50: 4.6 & 8.7 μM at 48 h) against human hepatoma (HepG2) and HeLa cell lines than the Ni(ii) complexes (compounds , & ) and 5-fluorouracil as control in spite of their inability to cleave DNA. Finally, DNA binding interactions were performed by docking studies. Density functional theory (DFT) studies were performed using the GAUSSIAN 03 program. The DFT method with B3LYP functional, LANL2DZ basis set for metal centers and 6-311g* for other atoms was used. The synthesized compounds and DNA were simulated by molecular docking to explore more details of the ligands conformation and their orientations in the active site of the receptor.
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Affiliation(s)
- Zeinab Mandegani
- Department of Chemistry, Faculty of Sciences, Shiraz University, Shiraz 71454, Iran.
| | - Zahra Asadi
- Department of Chemistry, Faculty of Sciences, Shiraz University, Shiraz 71454, Iran.
| | - Mozaffar Asadi
- Department of Chemistry, Faculty of Sciences, Shiraz University, Shiraz 71454, Iran.
| | - Hamid Reza Karbalaei-Heidari
- Molecular Biotechnology Laboratory, Department of Biology, Faculty of Sciences, Shiraz University, PO Box 71467-13565, Shiraz 71454, Iran
| | - Banafsheh Rastegari
- Molecular Biotechnology Laboratory, Department of Biology, Faculty of Sciences, Shiraz University, PO Box 71467-13565, Shiraz 71454, Iran
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21
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Bhat SS, Revankar VK, Khan A, Pinjari RV, Necas M. Luminescent Ruthenium(II) Polypyridyl Complexes as Nonviral Carriers for DNA Delivery. Chem Asian J 2016; 12:254-264. [DOI: 10.1002/asia.201601515] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Indexed: 11/07/2022]
Affiliation(s)
- Satish S. Bhat
- Department of Chemistry; Karnatak University; Dharwad 580003 Karnataka India
| | | | - Ayesha Khan
- Department of Chemistry; Savitribhai Phule University of Pune; Pune 411007 Maharashtra India
| | - Rahul V. Pinjari
- School of Chemical Science; Swami Ramanand Teerth Marathwada University; Nanded 431606 Maharashtra India
| | - Marek Necas
- Department of Chemistry; Masaryk University; Kotlarska 2 61137 Brno Czech Republic
- Central European Institute of Technology (CEITEC); Masaryk University; Kamenice 5 62500 Brno Czech Republic
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22
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Kinetics of photoinduced electron transfer reactions of ruthenium(II) complexes and phenols, tyrosine, N-acetyl-tyrosine and tryptophan in aqueous solutions measured with modulated fluorescence spectroscopy. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2016; 166:28-34. [PMID: 27855305 DOI: 10.1016/j.jphotobiol.2016.11.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Accepted: 11/05/2016] [Indexed: 11/22/2022]
Abstract
Photooxidation kinetics of phenol, 1-naphthol, 2-naphthol, tyrosine (TyrOH) and N-acetyl-tyrosine (AcTyrOH), tryptophan (TrpH) by ruthenium(II) polypyridyl complexes: [Ru(bpy)3]Cl2 (1), [Ru(phen)3]Cl2 (2), [Ru(bpy)(phen)(bpg)]Cl2 (3), and [Ru(dpq)2(bxbg)]Cl2 (4) where bpy is 2,2'-bipyridine, phen - 1,10-phenanthroline, bpg - bipyridine-glycoluril, dpq - dipyrido[3,2-d:2',3'-f]quinoxaline, and bxbg - bis(o-xylene)bipyridine-glycoluril are investigated. Rate constants have been measured by steady-state luminescence and phase-modulation fluorometry in aqueous solutions at different pH's. The rates for the oxidation of the phenols and phenolic aromatic amino acids spreads over a wide range from 4.2×106 to 6.8×109M-1s-1, depending on pH and the nature of solutes. At pH>pKa of the quenchers, the presence of reactive species (PhO-) in the alkaline solutions is accounted for the rapid ET rates. In the pH range between 4 and 10 (pH<pKa), the ETPT mechanism becomes dominate and the rate constants are relatively low. It reveals that the important parameters that influence the quenching reaction rates, others than the driving forces ∆G0 are the steric and hydrophobic interactions arising from the structure of the compounds. This is clearly seen in the case of photoreaction between the Ru(phen)32+ complex and AcTyrOH. Phen ligands and acetyl group cause a steric effect, but strengthen the hydrophobic interactions and thus promote the quenching process. The pH-dependent equation of the observed rate constant for PhOH/AcTyrOH oxidation is expressed as a sum of rates for its protonated, neutral and deprotonated forms.
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23
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Rane LB, Kate AN, Ramteke SN, Shravage BV, Kulkarni PP, Kumbhar AA. Fluorescent zinc(ii) complexes for gene delivery and simultaneous monitoring of protein expression. Dalton Trans 2016; 45:16984-16996. [PMID: 27711702 DOI: 10.1039/c6dt02871c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Two new zinc(ii) complexes, [Zn(l-His)(NIP)]+(1) and [Zn(acac)2(NIP)](2) (where NIP is 2-(naphthalen-1-yl)-1H-imidazo[4,5-f][1,10]phenanthroline, acac = acetyl acetone), have been synthesized and characterized by elemental analysis, UV-vis, fluorescence, IR, 1H NMR and electron spray ionization mass spectroscopies. Gel retardation assay, atomic force microscopy and dynamic light scattering studies show that 1 and 2 can induce the condensation of circular plasmid pBR322 DNA into nanometer size particles under ambient conditions. Treatment of 2 with 5 mM EDTA restored 30% of the supercoiled form of DNA, revealing partial reversibility of DNA condensation. The in vitro transfection experiment demonstrates that the complexes can be used to deliver pCMV-tdTomato-N1 plasmid which expresses red fluorescent protein. The confocal studies show that the fluorescent nature of complexes is advantageous for visualizing the intracellular delivery of metal complexes as well as transfection efficiency using two distinct emission windows.
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Affiliation(s)
- Lalita B Rane
- Department of Chemistry, Savitribai Phule Pune University, Pune - 411007, India.
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24
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Vyas NA, Ramteke SN, Kumbhar AS, Kulkarni PP, Jani V, Sonawane UB, Joshi RR, Joshi B, Erxleben A. Ruthenium(II) polypyridyl complexes with hydrophobic ancillary ligand as Aβ aggregation inhibitors. Eur J Med Chem 2016; 121:793-802. [PMID: 27406812 DOI: 10.1016/j.ejmech.2016.06.038] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2015] [Revised: 06/15/2016] [Accepted: 06/20/2016] [Indexed: 11/28/2022]
Abstract
The synthesis, spectral and electrochemical characterization of the complexes of the type [Ru(NN)2(txbg)](2+) where NN is 2,2'-bipyridine (bpy) (1), 1,10-phenanthroline (phen) (2), dipyrido [3,2-d:2',3f] quinoxaline (dpq) (3), and dipyrido[3,2-a:2',3'-c]phenazine (dppz) (4) which incorporate the tetra-xylene bipyridine glycoluril (txbg) as the ancillary ligand are described in detail. Crystal structures of ligand txbg and complex 2 were solved by single crystal X-ray diffraction. Thioflavin T (ThT) fluorescence and Transmission Electron Microscopy (TEM) results indicated that at micromolar concentration all complexes exhibit significant potential of Aβ aggregation inhibition, while the ligand txbg displayed weak activity towards Aβ aggregation. Complex 1 showed relatively low inhibition (70%) while complexes 2-4 inhibited nearly 100% Aβ aggregation after 240 h of incubation. The similar potential of complexes 2-4 and absence of any trend in their activity with the planarity of polypyridyl ligands suggests there is no marked effect of planarity of coligands on their inhibitory potential. Further studies on acetylcholinesterase (AChE) inhibition indicated very weak activity of these complexes against AChE. Detailed interactions of Aβ with both ligand and complex 2 have been studied by molecular modeling. Complex 2 showed interactions involving all three polypyridyl ligands with hydrophobic region of Aβ. Furthermore, the toxicity of these complexes towards human neuroblastoma cells was evaluated by MTT assay and except complex 4, the complexes displayed very low toxicity.
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Affiliation(s)
- Nilima A Vyas
- Department of Chemistry, Savitribai Phule Pune University, Pune, 411007, India
| | | | - Avinash S Kumbhar
- Department of Chemistry, Savitribai Phule Pune University, Pune, 411007, India.
| | | | - Vinod Jani
- Bioinformatics Group, Centre for Development of Advanced Computing (C-DAC), Savitribai Phule Pune University, Pune, 411007, India
| | - Uddhavesh B Sonawane
- Bioinformatics Group, Centre for Development of Advanced Computing (C-DAC), Savitribai Phule Pune University, Pune, 411007, India
| | - Rajendra R Joshi
- Bioinformatics Group, Centre for Development of Advanced Computing (C-DAC), Savitribai Phule Pune University, Pune, 411007, India
| | - Bimba Joshi
- Bioprospecting, Agharkar Research Institute, Pune, 411004, India
| | - Andrea Erxleben
- School of Chemistry, National University of Ireland, Galway, Ireland
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25
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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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26
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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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27
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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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28
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Benabdelouahab Y, Muñoz-Moreno L, Frik M, de la Cueva-Alique I, El Amrani MA, Contel M, Bajo AM, Cuenca T, Royo E. Hydrogen bonding and anticancer properties of water-soluble chiral p-cymene Ru(II) compounds with amino-oxime ligands. Eur J Inorg Chem 2015; 2015:2295-2307. [PMID: 27175101 DOI: 10.1002/ejic.201500097] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The investigation of the hydrogen-bonding effect on the aggregation tendency of ruthenium compounds [(η6-p-cymene)Ru(κNHR,κNOH)Cl]Cl (R = Ph (1a), Bn (1b)) and [(η6-p-cymene)Ru(κ2NH(2-pic),κNOH)][PF6]2 (1c), [(η6-p-cymene)Ru(κNHBn,κNO)Cl] (2b) and [(η6-p-cymene)Ru(κNBn,κ2NO)] (3b), has been performed by means of concentration dependence 1H NMR chemical shifts and DOSY experiments. The synthesis and full characterization of new compounds 1c, [(η6-p-cymene)Ru(κNPh,κ2NO)] (3a) and 3b are also reported. The effect of the water soluble ruthenium complexes 1a-1c on cytotoxicity, cell adhesion and cell migration of the androgen-independent prostate cancer PC3 cells have been assessed by MTT, adhesion to type-I-collagen and recovery of monolayer wounds assays, respectively. Interactions of 1a-1c with DNA and human serum albumin have also been studied. Altogether, the properties reported herein suggest that ruthenium compounds 1a-1c have considerable potential as anticancer agents against advanced prostate cancer.
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Affiliation(s)
- Yosra Benabdelouahab
- Departamento de Química Orgánica y Química Inorgánica, Facultad de Química, Biología y Ciencias Ambientales, Universidad de Alcalá, 28871 Alcalá de Henares, Madrid, Spain
| | - Laura Muñoz-Moreno
- Department of Systems Biology, Faculty of Medicine and Health Sciences, Universidad de Alcalá, 28871 Alcalá de Henares, Madrid, Spain
| | - Malgorzata Frik
- Department of Chemistry, Brooklyn College, The City University of New York, Brooklyn, New York, 11210, United States; Chemistry PhD Program, The Graduate Center, The City University of New York, 365 Fifth Avenue, New York, NY 10016, United States
| | - Isabel de la Cueva-Alique
- Departamento de Química Orgánica y Química Inorgánica, Facultad de Química, Biología y Ciencias Ambientales, Universidad de Alcalá, 28871 Alcalá de Henares, Madrid, Spain
| | - Mohammed Amin El Amrani
- Université Abdelmalek Essaâdi, Faculté des Sciences, Departement de Chimie- Laboratoire de Chimie Organique Appliquée. Mhannech II, B.P : 2121 Tétouan, Morocco
| | - María Contel
- Department of Chemistry, Brooklyn College, The City University of New York, Brooklyn, New York, 11210, United States; Chemistry PhD Program, The Graduate Center, The City University of New York, 365 Fifth Avenue, New York, NY 10016, United States
| | - Ana M Bajo
- Department of Systems Biology, Faculty of Medicine and Health Sciences, Universidad de Alcalá, 28871 Alcalá de Henares, Madrid, Spain
| | - Tomás Cuenca
- Departamento de Química Orgánica y Química Inorgánica, Facultad de Química, Biología y Ciencias Ambientales, Universidad de Alcalá, 28871 Alcalá de Henares, Madrid, Spain
| | - Eva Royo
- Departamento de Química Orgánica y Química Inorgánica, Facultad de Química, Biología y Ciencias Ambientales, Universidad de Alcalá, 28871 Alcalá de Henares, Madrid, Spain
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29
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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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30
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Bhat SS, Revankar VK, Khan A, Butcher RJ, Thatipamula K. Supramolecular architecture and photophysical and biological properties of ruthenium(ii) polypyridyl complexes. NEW J CHEM 2015. [DOI: 10.1039/c4nj02394c] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A two-dimensional cyclic hybrid water–chloride anionic network has been structurally characterized in a metal–organic matrix. DNA interactions and the cytotoxicity of ruthenium(ii) complexes have been studied.
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Affiliation(s)
- Satish S. Bhat
- Department of Chemistry
- Karnatak University
- Dharwad-580003
- India
| | | | - Ayesha Khan
- Department of Chemistry
- University of Pune
- Pune-411007
- India
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31
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Busto N, Martínez-Alonso M, Leal JM, Rodríguez AM, Domínguez F, Acuña MI, Espino G, García B. Monomer–Dimer Divergent Behavior toward DNA in a Half-Sandwich Ruthenium(II) Aqua Complex. Antiproliferative Biphasic Activity. Organometallics 2014. [DOI: 10.1021/om5011275] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Natalia Busto
- Departamento
de Química, Facultad de Ciencias, Universidad de Burgos, Plaza Misael Bañuelos s/n, 09001, Burgos, Spain
| | - Marta Martínez-Alonso
- Departamento
de Química, Facultad de Ciencias, Universidad de Burgos, Plaza Misael Bañuelos s/n, 09001, Burgos, Spain
| | - José M. Leal
- Departamento
de Química, Facultad de Ciencias, Universidad de Burgos, Plaza Misael Bañuelos s/n, 09001, Burgos, Spain
| | - Ana M. Rodríguez
- Departamento
de Química Inorgánica, Orgánica y Bioquímica,
Facultad de Químicas, Universidad de Castilla-La Mancha, Avenida Camilo J. Cela 10, 13071, Ciudad Real, Spain
| | - Fernando Domínguez
- CIMUS, Universidad de Santiago de Compostela, Avenida Barcelona s/n, 15782, Santiago de Compostela, Spain
| | - M Isabel Acuña
- CIMUS, Universidad de Santiago de Compostela, Avenida Barcelona s/n, 15782, Santiago de Compostela, Spain
| | - Gustavo Espino
- Departamento
de Química, Facultad de Ciencias, Universidad de Burgos, Plaza Misael Bañuelos s/n, 09001, Burgos, Spain
| | - Begoña García
- Departamento
de Química, Facultad de Ciencias, Universidad de Burgos, Plaza Misael Bañuelos s/n, 09001, Burgos, Spain
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32
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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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33
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Bao FF, Xu XX, Zhou W, Pang CY, Li Z, Gu ZG. Enantioselective DNA condensation induced by heptameric lanthanum helical supramolecular enantiomers. J Inorg Biochem 2014; 138:73-80. [DOI: 10.1016/j.jinorgbio.2014.05.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2014] [Revised: 04/30/2014] [Accepted: 05/01/2014] [Indexed: 10/25/2022]
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34
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Abdel Aziz AA, Elbadawy HA. Spectral, electrochemical, thermal, DNA binding ability, antioxidant and antibacterial studies of novel Ru(III) Schiff base complexes. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 124:404-415. [PMID: 24508879 DOI: 10.1016/j.saa.2014.01.050] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2013] [Revised: 12/21/2013] [Accepted: 01/08/2014] [Indexed: 06/03/2023]
Abstract
Four new air stable low spin Ru(III) complexes of the type [Ru(L(1-4))(H2O)2]Cl have been synthesized, where L=dianion of the tetradentate Schiff base ligands namely N,N'bis(salicylaldehyde)4,5-dimethy-l,2-phenylendiammine (L(1)H2), N,N'bis(salicylaldehyde)4,5-dichloro 1,2-phenylendiammine (L(2)H2), N,N'bis(o-vanillin)4,5-dimethy-1,2-phenylendiammine (L(3)H2) and N,N'bis(o-vanillin)4,5-dichloro-1,2-phenylendiammine (L(4)H2). The complexes have been fully characterized by elemental analysis, infrared spectroscopy, electronic spectroscopy, magnetic susceptibility and electron spin resonance spectroscopy. Elemental analyses and spectroscopic data have been showed that, the stoichiometries of complexes were 1:1 with an octahedral geometry for all the complexes. Thermal analysis measurements indicated that the complexes have good thermal stability. The redox behavior of the complexes has been investigated by the cyclic voltammetric technique. The interaction of these complexes with calf thymus DNA (CT-DNA) was explored by different techniques which revealed that the complexes could bind to CT-DNA through an intercalative mode. Furthermore, the antioxidant activity of the Ru(III) complexes against superoxide and hydroxyl radicals was evaluated by using spectrophotometer methods in vitro. The experiments on antioxidant activity show that the complexes were found to possess potent antioxidant activity. Additionally, as a potential application the antibacterial activity of the complexes was assessed by testing their effect on the growth of various strains of bacteria.
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Affiliation(s)
- Ayman A Abdel Aziz
- Department of Chemistry, Faculty of Science, University of Tabuk, Tabuk 71421, Saudi Arabia; Department of Chemistry, Faculty of Science, Ain Shams University, Cairo 11566, Egypt.
| | - Hemmat A Elbadawy
- Department of Chemistry, Faculty of Science, University of Tabuk, Tabuk 71421, Saudi Arabia; Department of Chemistry, Faculty of Science, Alexandria University, Alexandria 21641, Egypt
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35
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Vyas NA, Bhat SS, Kumbhar AS, Sonawane UB, Jani V, Joshi RR, Ramteke SN, Kulkarni PP, Joshi B. Ruthenium(II) polypyridyl complex as inhibitor of acetylcholinesterase and Aβ aggregation. Eur J Med Chem 2014; 75:375-81. [DOI: 10.1016/j.ejmech.2014.01.052] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2013] [Revised: 12/04/2013] [Accepted: 01/17/2014] [Indexed: 10/25/2022]
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36
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Kaplanis M, Stamatakis G, Papakonstantinou VD, Paravatou-Petsotas M, Demopoulos CA, Mitsopoulou CA. Re(I) tricarbonyl complex of 1,10-phenanthroline-5,6-dione: DNA binding, cytotoxicity, anti-inflammatory and anti-coagulant effects towards platelet activating factor. J Inorg Biochem 2014; 135:1-9. [PMID: 24632342 DOI: 10.1016/j.jinorgbio.2014.02.003] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2013] [Revised: 02/05/2014] [Accepted: 02/06/2014] [Indexed: 10/25/2022]
Abstract
The complex fac-[Re(CO)3(phendione)Cl] (1) (where phendione=1,10-phenanthroline-5,6-dione) has been synthesized and fully characterized by UV-visible, FTIR, and NMR techniques. The DNA binding properties of 1 are investigated by UV-spectrophotometric (melting curves), covalent binding assay, CV (cyclic voltammetry), circular dichroism (CD) and viscosity measurements. Experimental data indicate that 1 fits into the major groove without disrupting the helical structure of the B-DNA in contrast to the free phendione which intercalates within the base pairs of DNA. Upon irradiation, complex 1 promotes the cleavage of plasmid pBR322 DNA from supercoiled form I to nicked form II via a proton coupled electron transfer mechanism. This comes as a result of experimental data in anaerobic/aerobic conditions and in the presence of DMSO. The biological activities of 1 and its precursors [Re(CO)5Cl] and phendione are tested towards a series of cancerous cell lines as glioblastoma (T98G), prostate cancer (PC3) and breast cancer (MCF-7) as well as platelet activating factor (PAF)-aggregation. Moreover, all the aforementioned compounds are tested for their ability to modulate PAF-basic metabolic enzyme activities in preparations of rabbit leukolytes. The in vitro experiments indicate that phendione has a better antitumor effect than cisplatin whereas [Re(CO)5Cl] is a better PAF inhibitor than both the phendione ligand and 1. Moreover, for the first time it is indicated that [Re(CO)5Cl], with a IC50 of 17nM is comparable to the widely used PAF receptor antagonists, BN52021 and WEB2170 with IC50 of 30 and 20nM, respectively, whereas 1 affects PAF-catabolism.
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Affiliation(s)
- Michael Kaplanis
- Laboratory of Inorganic Chemistry, Faculty of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 157 71 Athens, Greece
| | - George Stamatakis
- Laboratory of Biochemistry, Faculty of Chemistry, National and Kapodistrian University of Athens, Athens 15771, Greece
| | - Vasiliki D Papakonstantinou
- Laboratory of Biochemistry, Faculty of Chemistry, National and Kapodistrian University of Athens, Athens 15771, Greece
| | - Maria Paravatou-Petsotas
- Institute of Nuclear and Radiological Sciences and Technology, Energy and Safety, National Centre for Scientific Research "Demokritos", 15310 Athens, Greece
| | - Constantinos A Demopoulos
- Laboratory of Biochemistry, Faculty of Chemistry, National and Kapodistrian University of Athens, Athens 15771, Greece
| | - Christiana A Mitsopoulou
- Laboratory of Inorganic Chemistry, Faculty of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 157 71 Athens, Greece.
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37
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Singh R, Afzal M, Zaki M, Ahmad M, Tabassum S, Bharadwaj PK. Synthesis, structure elucidation and DFT studies of a new coumarin-derived Zn( ii) complex: in vitro DNA/HSA binding profile and pBR322 cleavage pathway. RSC Adv 2014; 4:43504-43515. [DOI: 10.1039/c4ra05637j] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/12/2023] Open
Abstract
A new mononuclear coumarin-derived Zn(ii) complex was designed and synthesized, and its interactions with DNA and protein were analyzed.
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Affiliation(s)
- Ruchi Singh
- Department of Chemistry
- Indian Institute of Technology Kanpur
- , India
| | - Mohd. Afzal
- Department of Chemistry
- Aligarh Muslim University
- , India
| | - Mehvash Zaki
- Department of Chemistry
- Aligarh Muslim University
- , India
| | - Musheer Ahmad
- Department of Chemistry
- Indian Institute of Technology Kanpur
- , India
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38
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Ruthenium (II) complexes containing a new asymmetric ligand: DNA interaction, photocleavage and topoisomerase I inhibition. J Organomet Chem 2013. [DOI: 10.1016/j.jorganchem.2013.01.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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39
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Liu XW, Chen ZG, Li L, Chen YD, Lu JL, Zhang DS. DNA-binding, photocleavage studies of ruthenium(II) complexes with 2-(2-quinolinyl) imidazo[4,5-f][1,10]phenanthroline. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 102:142-149. [PMID: 23220529 DOI: 10.1016/j.saa.2012.10.025] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2012] [Revised: 09/29/2012] [Accepted: 10/12/2012] [Indexed: 06/01/2023]
Abstract
Two new ruthenium complexes with [Ru(L)(2)(qip)](2+) (L=bpy (2,2'- bipyridine), phen (1,10-phenanthroline); qip=2-(2-quinolinyl)imidazo[4,5-f][1,10]phenanthroline), have been synthesized and characterized by elemental analysis, ES-MS, (1)H NMR. The binding properties of two complexes towards CT-DNA were investigated by various optical methods and viscosity measurements. The experiment results suggested that both Ru(II) complexes can intercalate into DNA base pairs. Strong quenching in emission intensity of two Ru(II) complexes were observed upon addition of Ag(+) in the absence and presence of CT-DNA. Furthermore, the two complexes can promote cleavage of pBR322 DNA under irradiation at 365 nm, and complex 2 exhibits a stronger DNA-photocleavage efficiency than complex 1. The mechanism of DNA cleavage suggests that singlet oxygen ((1)O(2)) is likely to be the cleaving agent.
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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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Sathiya Kamatchi T, Chitrapriya N, Kim SK, Fronczek FR, Natarajan K. Influence of carboxylic acid functionalities in ruthenium (II) polypyridyl complexes on DNA binding, cytotoxicity and antioxidant activity: Synthesis, structure and in vitro anticancer activity. Eur J Med Chem 2013; 59:253-64. [DOI: 10.1016/j.ejmech.2012.11.024] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2012] [Revised: 10/22/2012] [Accepted: 11/17/2012] [Indexed: 11/17/2022]
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41
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Bhat SS, Kumbhar AS, Kumbhar AA, Khan A. Efficient DNA Condensation Induced by Ruthenium(II) Complexes of a Bipyridine-Functionalized Molecular Clip Ligand. Chemistry 2012; 18:16383-92. [DOI: 10.1002/chem.201200407] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2012] [Revised: 06/28/2012] [Indexed: 12/16/2022]
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42
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Crystal Structures, Interactions with Biomacromolecules and Anticancer Activities of Mn(II), Ni(II), Cu(II) Complexes of Demethylcantharate and 2-Aminopyridine. J Fluoresc 2012; 22:1395-406. [DOI: 10.1007/s10895-012-1078-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2011] [Accepted: 06/11/2012] [Indexed: 10/28/2022]
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43
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Liu XW, Chen YD, Li L, Lu JL, Zhang DS. DNA-binding and photocleavage studies of ruthenium(II) complexes containing asymmetric intercalative ligand. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2012; 86:554-561. [PMID: 22137749 DOI: 10.1016/j.saa.2011.11.014] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2011] [Revised: 11/01/2011] [Accepted: 11/09/2011] [Indexed: 05/31/2023]
Abstract
A novel asymmetric ligand 2-(pyridine-2-yl)-1-H-imidazo[4,5-i]dibenzo[2,3-a:2',3'-c]phenazine (pidbp) and its ruthenium complexes [Ru(L)(2)(pidbp)](2+) (L=bpy (2, 2'- bipyridine), phen (1, 10 - phenanthroline)), have been synthesized and characterized by elemental analysis, ES-MS, (1)H NMR. Various methods support the conclusion that both Ru(II) complexes can intercalate into DNA base pairs. Complex [Ru(bpy)(2)(pidbp)](2+)4 exhibits its DNA "molecular light switch" properties. Furthermore, the two complexes are efficient DNA-photocleavers under irradiation at 365 nm, and complex 5 exhibits a stronger DNA-photocleavage efficiency than complex 4. The mechanism of DNA cleavage is an oxidative process by generating singlet oxygen.
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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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44
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Liu XW, Li L, Lu JL, Chen YD, Zhang DS. Synthesis, DNA-binding, and photocleavage studies of ruthenium(II) complexes with an asymmetric ligand. J COORD CHEM 2011. [DOI: 10.1080/00958972.2011.639364] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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
| | - Lin Li
- a College of Chemistry and Chemical Engineering, Hunan University of Arts and Science , ChangDe 415000 , P.R. China
| | - Ji-Lin Lu
- a College of Chemistry and Chemical Engineering, Hunan University of Arts and Science , ChangDe 415000 , 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
| | - Da-Shun Zhang
- a College of Chemistry and Chemical Engineering, Hunan University of Arts and Science , ChangDe 415000 , P.R. China
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45
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Samy NA, Alexander V. New star-shaped trinuclear Ru(ii) polypyridine complexes of imidazo[4,5-f][1,10]phenanthroline derivatives: syntheses, characterization, photophysical and electrochemical properties. Dalton Trans 2011; 40:8630-42. [DOI: 10.1039/c1dt10811e] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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46
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Bhat SS, Kumbhar AS, Kumbhar AA, Khan A, Lönnecke P, Hey-Hawkins E. Ruthenium(ii) polypyridyl complexes as carriers for DNA delivery. Chem Commun (Camb) 2011; 47:11068-70. [DOI: 10.1039/c1cc13863d] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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47
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Islam MN, Kumbhar AA, Kumbhar AS, Zeller M, Butcher RJ, Dusane MB, Joshi BN. Bis(maltolato)vanadium(III)-Polypyridyl Complexes: Synthesis, Characterization, DNA Cleavage, and Insulin Mimetic Activity. Inorg Chem 2010; 49:8237-46. [DOI: 10.1021/ic9025359] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | | | | | - Matthias Zeller
- Department of Chemistry, Youngstown State University, Youngstown, Ohio 44555
| | | | - Menakshi Bhat Dusane
- Institute of Bioinformatics and Biotechnology, University of Pune, Pune-411007, India
| | - Bimba N. Joshi
- Institute of Bioinformatics and Biotechnology, University of Pune, Pune-411007, India
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