101
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Käkinen A, Ding F, Chen P, Mortimer M, Kahru A, Ke PC. Interaction of firefly luciferase and silver nanoparticles and its impact on enzyme activity. NANOTECHNOLOGY 2013; 24:345101. [PMID: 23899823 DOI: 10.1088/0957-4484/24/34/345101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
We report on the dose-dependent inhibition of firefly luciferase activity induced by exposure of the enzyme to 20 nm citrate-coated silver nanoparticles (AgNPs). The inhibition mechanism was examined by characterizing the physicochemical properties and biophysical interactions of the enzyme and the AgNPs. Consistently, binding of the enzyme induced an increase in zeta potential from -22 to 6 mV for the AgNPs, triggered a red-shift of 44 nm in the absorbance peak of the AgNPs, and rendered a 'protein corona' of 20 nm in thickness on the nanoparticle surfaces. However, the secondary structures of the enzyme were only marginally affected upon formation of the protein corona, as verified by circular dichroism spectroscopy measurement and multiscale discrete molecular dynamics simulations. Rather, inductively coupled plasma mass spectrometry measurement revealed a significant ion release from the AgNPs. The released silver ions could readily react with the cysteine residues and N-groups of the enzyme to alter the physicochemical environment of their neighboring catalytic site and subsequently impair the enzymatic activity.
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Affiliation(s)
- Aleksandr Käkinen
- Laboratory of Environmental Toxicology, National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, Tallinn 12618, Estonia
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102
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Inhibition behavior on alkaline phosphatase activity, antibacterial and antioxidant activities of ternary methimazole–phenanthroline–copper(II) complex. Inorganica Chim Acta 2013. [DOI: 10.1016/j.ica.2013.05.022] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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103
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Wang F, Yin H, Yue C, Cheng S, Hong M. Syntheses, structural characterization, in vitro cytotoxicities and DNA-binding properties of triphenylantimony di(N-oxy phthalimide) and di(N-oxy succinimide) complexes. J Organomet Chem 2013. [DOI: 10.1016/j.jorganchem.2013.03.046] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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104
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Prakash O, Singh SK, Singh B, Singh RK. Investigation of coordination properties of isolated adenine to copper metal: a systematic spectroscopic and DFT study. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 112:410-416. [PMID: 23694899 DOI: 10.1016/j.saa.2013.04.040] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2013] [Revised: 04/08/2013] [Accepted: 04/10/2013] [Indexed: 06/02/2023]
Abstract
The coordination properties of copper with adenine have been studied by the analyzing the changes in Fourier Transform Infra-red (FTIR) and Raman spectra of adenine and adenine-copper complex. The geometry of adenine and adenine copper complex were optimized and theoretical Infra-red and Raman spectra of the optimized structures were calculated using Density Functional Theory (DFT). During synthesis of adenine-copper complex specific procedure was adopted to attach the Cu atom with particular N-atom of adenine (N9). The results of Raman and DFT confirmed the attachment. The Raman bands at 625, 330 and 230 cm(-1) of adenine-copper complex contain significant contribution of the vibrational motions of Cu metal coordinated to N9 and Cl atoms. The DFT calculations give additional vibrational modes containing the Cu, N9 and N9* atoms, which are not observed in FTIR and Raman spectra. The Raman, IR and DFT study confirm that Cu metal has good binding affinity to the isolated adenine base.
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Affiliation(s)
- Om Prakash
- Department of Physics, Banaras Hindu University, Varanasi 221 005, India
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105
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Rehman S, Ikram M, Khan A, Min S, Azad E, Hofer TS, Mok K, Baker RJ, Blake AJ, Rehman SU. New dicoumarol sodium compound: crystal structure, theoretical study and tumoricidal activity against osteoblast cancer cells. Chem Cent J 2013; 7:110. [PMID: 23819586 PMCID: PMC3716688 DOI: 10.1186/1752-153x-7-110] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2013] [Accepted: 06/13/2013] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Enormous interest had been paid to the coordination chemistry of alkali and alkaline metal ions because of their role inside body viz; their Li(+)/Na(+) exchange inside the cell lead to different diseases like neuropathy, hypertension, microalbuminuria, cardiac and vascular hypertrophy, obesity, and insulin resistance. It has been presumed that alkali metal ions (whether Na(+) or K(+)) coordinated to chelating ligands can cross the hydrophobic cell membrane easily and can function effectively for depolarizing the ion difference. This unique function was utilized for bacterial cell death in which K(+) has been found coordinated valinomycin (antibiotic). RESULTS Distinct sodium adduct (1) with dicoumarol ligand, 4-Hydroxy-3-[(4-hydroxy-2-oxo-4a,8a-dihydro-2H-chromen-3-yl)-phenyl-methyl]-chromen-2-one (L) is isolated from the saturated solution of sodium methoxide. Single crystal X-ray diffraction studies of the adduct reveals that sodium is in the form of cation attached to a methoxide, methanol and a dicoumarol ligand where carbonyl functional groups of the coumarin derivative are acting as bridges. The sodium compound (1) is also characterized by IR, (1)H-NMR, and (13)C{(1)H}-NMR spectroscopic techniques. The composition is confirmed by elemental analysis. DFT study for 1 has been carried out using B3LYP/6-13G calculations which shown the theoretical confirmation of the various bond lengths and bond angles. Both the compounds were studied subsequently for the U2OS tumoricidal activity and it was found that L has LD50 value of 200 μM whereas the sodium analog cytotoxicity did not drop down below 60%. CONCLUSION A sodium analogue (1) with medicinally important dicoumarol ligand (L) has been reported. The crystal structure and DFT study confirm the formation of cationic sodium compound with dicoumarol. The ligand was found more active than the sodium analog attributed to the instability of 1 in solution state. Coumarin compound with sodium was observed to be less cytotoxic than the ligand, its LD50 value never dropped below 60%.
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Affiliation(s)
- Sadia Rehman
- Institute of Chemical Sciences, University of Peshawar, Peshawar, Pakistan ; Department of Chemistry, Sarhad University of Science and Information Technology, Peshawar, Pakistan
| | - Muhammad Ikram
- Department of Chemistry, Sarhad University of Science and Information Technology, Peshawar, Pakistan
| | - Ajmal Khan
- Institute of General, Inorganic and Theoretical Chemistry, University of Innsbruck Innrain 80-82, A-6020 Innsbruck, Austria
| | - Soyoung Min
- Trinity Biomedical Sciences Institute (TBSI) School of Biochemistry and Immunology Trinity College, Dublin 2, Ireland
| | - Effat Azad
- Trinity Biomedical Sciences Institute (TBSI) School of Biochemistry and Immunology Trinity College, Dublin 2, Ireland
| | - Thomas S Hofer
- Institute of General, Inorganic and Theoretical Chemistry, University of Innsbruck Innrain 80-82, A-6020 Innsbruck, Austria
| | - Kh Mok
- Trinity Biomedical Sciences Institute (TBSI) School of Biochemistry and Immunology Trinity College, Dublin 2, Ireland
| | - Robert J Baker
- School of Chemistry, University of Dublin Trinity College, Dublin 2, Ireland
| | - Alexander J Blake
- School of Chemistry, The University of Nottingham, Nottingham NG7 2RD, UK
| | - Saeed Ur Rehman
- Institute of Chemical Sciences, University of Peshawar, Peshawar, Pakistan
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106
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Synthesis and in vitro biology of Co(II), Ni(II), Cu(II) and Zinc(II) complexes of functionalized beta-diketone bearing energy buried potential antibacterial and antiviral O,O pharmacophore sites. JOURNAL OF SAUDI CHEMICAL SOCIETY 2013. [DOI: 10.1016/j.jscs.2011.04.004] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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107
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Dholariya HR, Patel KS, Patel JC, Patel KD. Dicoumarol complexes of Cu(II) based on 1,10-phenanthroline: synthesis, X-ray diffraction studies, thermal behavior and biological evaluation. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 108:319-328. [PMID: 23478077 DOI: 10.1016/j.saa.2012.09.096] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2012] [Revised: 08/30/2012] [Accepted: 09/08/2012] [Indexed: 06/01/2023]
Abstract
A series of Cu(II) complexes containing dicoumarol derivatives and 1, 10-phenanthroline have been synthesized. Structural and spectroscopic properties of ligands were studied on the basis of mass spectra, NMR ((1)H and (13)C) spectra, FT-IR spectrophotometry and elemental analysis, while physico-chemical, spectroscopic and thermal properties of mixed ligand complexes have been studied on the basis of infrared spectra, mass spectra, electronic spectra, powder X-ray diffraction, elemental analysis and thermogravimetric analysis. X-ray diffraction study suggested the suitable octahedral geometry for hexa-coordinated state. The kinetic parameters such as order of reaction (n), energy of activation (Ea), entropy (S(*)), pre-exponential factor (A), enthalpy (H(*)) and Gibbs free energy (G(*)) have been calculated using Freeman-Carroll method. Ferric-reducing antioxidant power (FRAP) of all complexes were measured. All the compounds were screened for their antibacterial activity against Escherichia coli, Pseudomonas aeruginosa, Streptococcus pyogenes and Bacillus subtilis, while antifungal activity against Candida albicans and Aspergillus niger have been carried out. Also compounds against Mycobacterium tuberculosis shows clear enhancement in the anti-tubercular activity upon copper complexation.
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Affiliation(s)
- Hitesh R Dholariya
- V.P. & R.P.T.P. Science College, Sardar Patel University, Vallabh Vidyanagar 388 120, Gujarat, India.
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108
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Prakash J, Kodanko JJ. Metal-based methods for protein inactivation. Curr Opin Chem Biol 2013; 17:197-203. [DOI: 10.1016/j.cbpa.2012.12.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2012] [Revised: 11/29/2012] [Accepted: 12/07/2012] [Indexed: 01/16/2023]
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109
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Inukai N, Kawai T, Yuasa J. Two Distinct Thermal Stabilities of DNA and Enzymatic Activities of DNase I in a Multistep Assembly with Carbazole Ligands: Different Binding Characteristics for Duplex and Quadruplex DNA. Chemistry 2013; 19:5938-47. [DOI: 10.1002/chem.201203461] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2012] [Revised: 01/11/2013] [Indexed: 12/12/2022]
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110
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Ajibade PA, Zulu NH, Oyedeji AO. Synthesis, Characterization, and Antibacterial Studies of Some Metal Complexes of Dialkyl Thiourea: The X-Ray Single Crystal Structure of [CoCl2(detu)2]. ACTA ACUST UNITED AC 2013. [DOI: 10.1080/15533174.2012.741179] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Peter A. Ajibade
- a Department of Chemistry , University of Fort Hare , Alice , South Africa
| | | | - Adebola O. Oyedeji
- b Department of Chemistry and Chemical Technology , Walter Sisulu University , Mthatha , South Africa
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111
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Takashima H, Fukuda M, Nakagaki F, Ogata T, Tsukahara K. Photoinduced Electron-Transfer Reactions of Carbonic Anhydrase Inhibitor Containing Tris(2,2′-bipyridine)ruthenium(II) Analogue. J Phys Chem B 2013; 117:2625-35. [DOI: 10.1021/jp310604w] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Hiroshi Takashima
- Department of Chemistry, Faculty of Science, Nara Women’s University, Nara 630-8506, Japan
| | - Misa Fukuda
- Department of Chemistry, Faculty of Science, Nara Women’s University, Nara 630-8506, Japan
| | - Fumie Nakagaki
- Department of Chemistry, Faculty of Science, Nara Women’s University, Nara 630-8506, Japan
| | - Tomoko Ogata
- Department of Chemistry, Faculty of Science, Nara Women’s University, Nara 630-8506, Japan
| | - Keiichi Tsukahara
- Department of Chemistry, Faculty of Science, Nara Women’s University, Nara 630-8506, Japan
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112
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Manus LM, Holbrook RJ, Atesin TA, Heffern MC, Harney AS, Eckermann AL, Meade TJ. Axial ligand exchange of N-heterocyclic cobalt(III) Schiff base complexes: molecular structure and NMR solution dynamics. Inorg Chem 2013; 52:1069-76. [PMID: 23282130 DOI: 10.1021/ic302379j] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The kinetic and thermodynamic ligand exchange dynamics are important considerations in the rational design of metal-based therapeutics and therefore, require detailed investigation. Co(III) Schiff base complex derivatives of bis(acetylacetone)ethylenediimine [acacen] have been found to be potent enzyme and transcription factor inhibitors. These complexes undergo solution exchange of labile axial ligands. Upon dissociation, Co(III) irreversibly interacts with specific histidine residues of a protein, and consequently alters structure and causes inhibition. To guide the rational design of next generation agents, understanding the mechanism and dynamics of the ligand exchange process is essential. To investigate the lability, pH stability, and axial ligand exchange of these complexes in the absence of proteins, the pD- and temperature-dependent axial ligand substitution dynamics of a series of N-heterocyclic [Co(acacen)(X)(2)](+) complexes [where X = 2-methylimidazole (2MeIm), 4-methylimidazole (4MeIm), ammine (NH(3)), N-methylimidazole (NMeIm), and pyridine (Py)] were characterized by NMR spectroscopy. The pD stability was shown to be closely related to the nature of the axial ligand with the following trend toward aquation: 2MeIm > NH(3) ≫ 4MeIm > Py > Im > NMeIm. Reaction of each [Co(III)(acacen)(X)(2)](+) derivative with 4MeIm showed formation of a mixed ligand Co(III) intermediate via a dissociative ligand exchange mechanism. The stability of the mixed ligand adduct was directly correlated to the pD-dependent stability of the starting Co(III) Schiff base with respect to [Co(acacen)(4MeIm)(2)](+). Crystal structure analysis of the [Co(acacen)(X)(2)](+) derivatives confirmed the trends in stability observed by NMR spectroscopy. Bond distances between the Co(III) and the axial nitrogen atoms were longest in the 2MeIm derivative as a result of distortion in the planar tetradentate ligand, and this was directly correlated to axial ligand lability and propensity toward exchange.
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Affiliation(s)
- Lisa M Manus
- Department of Chemistry, Molecular Biosciences, Neurobiology, Biomedical Engineering, and Radiology, Northwestern University, Evanston, Illinois 60208-3113, United States
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113
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DNA Binding and Cleavage Activities of Na[B(Glu)(OH)2]·2H2O, Na[B(Cit)(OH)2]·2H2O, Li[B(Sal)(OH)2], and Mg[B(Sal)(OH)2]·2H2O Complexes. J CHEM-NY 2013. [DOI: 10.1155/2013/406161] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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114
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Kilpin KJ, Dyson PJ. Enzyme inhibition by metal complexes: concepts, strategies and applications. Chem Sci 2013. [DOI: 10.1039/c3sc22349c] [Citation(s) in RCA: 171] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
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115
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Paliwal PK, Jetti SR, Jain S. Green approach towards the facile synthesis of dihydropyrano(c)chromene and pyrano[2,3-d]pyrimidine derivatives and their biological evaluation. Med Chem Res 2012. [DOI: 10.1007/s00044-012-0288-3] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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116
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Chen S, Xu D, Jiang H, Xi Z, Zhu P, Liu Y. Trans-Platinum/Thiazole Complex Interferes with Sp1 Zinc-Finger Protein. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201206596] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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117
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Chen S, Xu D, Jiang H, Xi Z, Zhu P, Liu Y. Trans-Platinum/Thiazole Complex Interferes with Sp1 Zinc-Finger Protein. Angew Chem Int Ed Engl 2012; 51:12258-62. [DOI: 10.1002/anie.201206596] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2012] [Revised: 09/17/2012] [Indexed: 11/11/2022]
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118
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Synthesis, structure and biological activities of mixed ligand copper(II) and nickel(II) complexes of N′-(1E)-[(5-bromo-2-hydroxyphenyl)methylidene]benzoylhydrazone. Inorganica Chim Acta 2012. [DOI: 10.1016/j.ica.2012.03.040] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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119
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Shi DH, Cao ZL, Liu WW, Xu RB, Zhang N, Gao LL, Zhang Q. Synthesis and Crystal Structures of Schiff Base Nickel(II) Complexes With Biological Activity. ACTA ACUST UNITED AC 2012. [DOI: 10.1080/15533174.2012.680157] [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)
- Da-Hua Shi
- a School of Chemical Engineering , Huaihai Institute of Technology , Lianyungang , P. R. China
- b Jiangsu Key Laboratory of Marine Biotechnology , Huaihai Institute of Technology , Lianyungang , P. R. China
| | - Zhi-Ling Cao
- a School of Chemical Engineering , Huaihai Institute of Technology , Lianyungang , P. R. China
| | - Wei-Wei Liu
- a School of Chemical Engineering , Huaihai Institute of Technology , Lianyungang , P. R. China
| | - Rui-Bo Xu
- a School of Chemical Engineering , Huaihai Institute of Technology , Lianyungang , P. R. China
| | - Na Zhang
- c Department of Chemistry and Chemical Engineering , Liaoning Normal University , Dalian , P. R. China
| | - Liu-Liu Gao
- a School of Chemical Engineering , Huaihai Institute of Technology , Lianyungang , P. R. China
| | - Qian Zhang
- a School of Chemical Engineering , Huaihai Institute of Technology , Lianyungang , P. R. China
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120
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Shi DH, Zhang N, Liu WW, Gao LL, Zhang Q, You ZL. Synthesis, Crystal Structures, and Biological Activity of Cu(II), Mn(III), and Fe(III) Complexes Derived from N,N’-Bis(4-methoxysalicylidene)ethylenediamine. ACTA ACUST UNITED AC 2012. [DOI: 10.1080/15533174.2012.684236] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Da-Hua Shi
- a School of Chemical Engineering , Huaihai Institute of Technology , Lianyungang , P. R. China
- b Jiangsu Key Laboratory of Marine Biotechnology , Huaihai Institute of Technology , Lianyungang , P. R. China
| | - Na Zhang
- c Department of Chemistry , Liaoning Normal University , Dalian , P. R. China
| | - Wei-Wei Liu
- a School of Chemical Engineering , Huaihai Institute of Technology , Lianyungang , P. R. China
| | - Liu-Liu Gao
- a School of Chemical Engineering , Huaihai Institute of Technology , Lianyungang , P. R. China
| | - Qian Zhang
- a School of Chemical Engineering , Huaihai Institute of Technology , Lianyungang , P. R. China
| | - Zhong-Lu You
- c Department of Chemistry , Liaoning Normal University , Dalian , P. R. China
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121
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Khalil MM, Mahmoud R, Moussa M. The determination of the stability constants of complexes of 1,2,4-triazoles and biologically relevant ligands with M(II) by potentiometric titration in aqueous solution. J COORD CHEM 2012. [DOI: 10.1080/00958972.2012.689292] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Mohamed Magdy Khalil
- a Department of Chemistry, Faculty of Science , Beni-Suef University , Beni-Suef , Egypt
| | - Rehab Mahmoud
- a Department of Chemistry, Faculty of Science , Beni-Suef University , Beni-Suef , Egypt
| | - Mahmoud Moussa
- a Department of Chemistry, Faculty of Science , Beni-Suef University , Beni-Suef , Egypt
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122
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Shahabadi N, Nemati L. DNA Interaction Studies of a Platinum(II) Complex Containing l-Histidine and 1,10-Phenanthroline Ligands. DNA Cell Biol 2012; 31:883-90. [DOI: 10.1089/dna.2011.1465] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Nahid Shahabadi
- Department of Chemistry, Faculty of Science, Razi University, Kermanshah, Iran
| | - Leila Nemati
- Department of Chemistry, Faculty of Science, Razi University, Kermanshah, Iran
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123
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Synthesis, structures, and urease inhibitory activities of oxovanadium(V) complexes with Schiff bases. Inorganica Chim Acta 2012. [DOI: 10.1016/j.ica.2011.11.039] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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124
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Sathyadevi P, Krishnamoorthy P, Jayanthi E, Butorac RR, Cowley AH, Dharmaraj N. Studies on the effect of metal ions of hydrazone complexes on interaction with nucleic acids, bovine serum albumin and antioxidant properties. Inorganica Chim Acta 2012. [DOI: 10.1016/j.ica.2011.11.033] [Citation(s) in RCA: 101] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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125
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Nishat N, Rasool R, Parveen S, Manisha, Khan SA. Antimicrobial Polychelates: Synthesis and Characterization of Transition Metal Chelated Barbituric Acid–Formaldehyde Resin. INT J POLYM MATER PO 2012. [DOI: 10.1080/00914037.2011.584226] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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126
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Das SP, Ankireddy SR, Boruah JJ, Islam NS. Synthesis and characterization of peroxotungsten(vi) complexes bound to water soluble macromolecules and their interaction with acid and alkaline phosphatases. RSC Adv 2012. [DOI: 10.1039/c2ra20358h] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
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127
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Grasso G, Giuffrida ML, Rizzarelli E. Metallostasis and amyloid β-degrading enzymes. Metallomics 2012; 4:937-49. [DOI: 10.1039/c2mt20105d] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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128
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Synthesis and Characterization of Thermally Stable and Biologically Active Metal-Based Schiff Base Polymer. J Inorg Organomet Polym Mater 2011. [DOI: 10.1007/s10904-011-9592-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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129
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130
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Novel platinum(II) and palladium(II) complexes of thiosemicarbazones derived from 5-substitutedthiophene-2-carboxaldehydes and their antiviral and cytotoxic activities. Eur J Med Chem 2011; 46:5616-24. [PMID: 21993152 PMCID: PMC7126824 DOI: 10.1016/j.ejmech.2011.09.031] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2011] [Revised: 09/16/2011] [Accepted: 09/20/2011] [Indexed: 11/29/2022]
Abstract
A series of thiosemicarbazones and their platinum(II) and palladium(II) complexes have been synthesized. The chemical structures of ligands and their complexes were characterized by UV–Vis, IR, 1H NMR, 13C NMR, MS spectra, elemental analysis and TGA. The antiviral and cytotoxic activities of all compounds have been tested. Results of broad antiviral evaluation showed that none of the compounds evaluated endowed with anti-DNA or -RNA virus activity at subtoxic concentrations except for the palladium complex 1b. This compound exhibited slightly selective inhibition against cytomegalovirus. The platinum complex 4a exhibited the best cytostatic activities against human cervix carcinoma. Ligands 2, 4 and 5 showed cytostatic potential. The palladium complexes were in general less cytostatic than the corresponding platinum complexes or unliganded congeners.
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131
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Wojciechowska A, Kochel A, Komorowska M. Synthesis, crystal structure and spectroscopy studies of a novel five-coordinated Zn(II) ion complex with l-tyrosine and imidazole. Polyhedron 2011. [DOI: 10.1016/j.poly.2011.05.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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132
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Boruah JJ, Kalita D, Das SP, Paul S, Islam NS. Polymer-Anchored Peroxo Compounds of Vanadium(V) and Molybdenum(VI): Synthesis, Stability, and Their Activities with Alkaline Phosphatase and Catalase. Inorg Chem 2011; 50:8046-62. [DOI: 10.1021/ic200368g] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Jeena Jyoti Boruah
- Department of Chemical Sciences, Tezpur University, Tezpur 784028, Assam, India
| | - Diganta Kalita
- Department of Chemical Sciences, Tezpur University, Tezpur 784028, Assam, India
| | - Siva Prasad Das
- Department of Chemical Sciences, Tezpur University, Tezpur 784028, Assam, India
| | - Saurav Paul
- Department of Chemical Sciences, Tezpur University, Tezpur 784028, Assam, India
| | - Nashreen S. Islam
- Department of Chemical Sciences, Tezpur University, Tezpur 784028, Assam, India
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133
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Nishat N, Rasool R, Parveen S, Khan SA. New antimicrobial agents: The synthesis of Schiff base polymers containing transition metals and their characterization and applications. J Appl Polym Sci 2011. [DOI: 10.1002/app.34100] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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134
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Chohan ZH, Iqbal MS, Aftab SK, Rauf A. Antibacterial dimeric copper(II) complexes with chromone-derived compounds. J Enzyme Inhib Med Chem 2011; 27:223-31. [PMID: 21699463 DOI: 10.3109/14756366.2011.585135] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
A new series of six chromone-derived compounds and their Cu(II) complexes have been synthesized and characterized by their physical, spectral and analytical data. The ligands and their Cu(II) complexes were screened for their in vitro antibacterial activity against four Gram-negative (Escherichia coli, Pseudomonas aeruginosa, Salmonella typhi, Shigella flexneri) and two Gram-positive (Bacillus subtilis, Staphylococcus aureus) bacterial strains by agar-well diffusion method. The ligands were found to exhibit either no or low-to-moderate activities against one or more bacterial species whereas, the Cu(II) complexes exhibited moderate-to-high activity. The ligands which were inactive before complexation became active upon complexation with the Cu(II) metal ion and less active became more active.
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Affiliation(s)
- Zahid H Chohan
- Department of Chemistry, Bahauddin Zakariya University, Multan, Pakistan.
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135
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Yang X, Cai L, Peng Y, Li H, Chen RF, Shen RF. Effects of Al(III) and nano-Al13 species on malate dehydrogenase activity. SENSORS 2011; 11:5740-53. [PMID: 22163924 PMCID: PMC3231464 DOI: 10.3390/s110605740] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/25/2011] [Revised: 05/12/2011] [Accepted: 05/20/2011] [Indexed: 12/03/2022]
Abstract
The effects of different aluminum species on malate dehydrogenase (MDH) activity were investigated by monitoring amperometric i-t curves for the oxidation of NADH at low overpotential using a functionalized multi-wall nanotube (MWNT) modified glass carbon electrode (GCE). The results showed that Al(III) and Al13 can activate the enzymatic activity of MDH, and the activation reaches maximum levels as the Al(III) and Al13 concentration increase. Our study also found that the effects of Al(III) and Al13 on the activity of MDH depended on the pH value and aluminum speciation. Electrochemical and circular dichroism spectra methods were applied to study the effects of nano-sized aluminum compounds on biomolecules.
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Affiliation(s)
- Xiaodi Yang
- Jiangsu Key Laboratory of Biofunctional Materials, Laboratory of Electrochemistry, College of Chemistry and Material Science, Nanjing Normal University, Nanjing 210097, China; E-Mails: (X.Y.); (L.C.); (H.L.)
| | - Ling Cai
- Jiangsu Key Laboratory of Biofunctional Materials, Laboratory of Electrochemistry, College of Chemistry and Material Science, Nanjing Normal University, Nanjing 210097, China; E-Mails: (X.Y.); (L.C.); (H.L.)
| | - Yu Peng
- Jiangsu Key Laboratory of Biofunctional Materials, Laboratory of Electrochemistry, College of Chemistry and Material Science, Nanjing Normal University, Nanjing 210097, China; E-Mails: (X.Y.); (L.C.); (H.L.)
| | - Huihui Li
- Jiangsu Key Laboratory of Biofunctional Materials, Laboratory of Electrochemistry, College of Chemistry and Material Science, Nanjing Normal University, Nanjing 210097, China; E-Mails: (X.Y.); (L.C.); (H.L.)
| | - Rong Fu Chen
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; E-Mail: (R.F.S.)
| | - Ren Fang Shen
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China; E-Mail: (R.F.S.)
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +86-25-86881563; Fax: +86-25-86881000
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136
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Krishnamoorthy P, Sathyadevi P, Cowley AH, Butorac RR, Dharmaraj N. Evaluation of DNA binding, DNA cleavage, protein binding and in vitro cytotoxic activities of bivalent transition metal hydrazone complexes. Eur J Med Chem 2011; 46:3376-87. [PMID: 21600679 DOI: 10.1016/j.ejmech.2011.05.001] [Citation(s) in RCA: 241] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2011] [Revised: 04/25/2011] [Accepted: 05/02/2011] [Indexed: 11/18/2022]
Abstract
Divalent Co, Ni and Cu hydrazone complexes containing [N'-(phenyl(pyridine-2-yl)methylidene) benzohydrazide] ligand were synthesised and characterised. Interactions of these complexes with DNA revealed an intercalative mode of binding between them. Further, all the hydrazone chelates showed moderate ability to cleave pUC19 DNA. Synchronous fluorescence spectra proved that the interaction of metal complexes with bovine serum albumin (BSA) resulted in a conformational change of the latter. Assay on the cytotoxicity of the above complexes against HeLa tumor cells and NIH 3T3 normal cells revealed that the complexes are toxic only against tumor cells but not to normal cells. In all the biological assays, the complex with copper ion as the metal center showed enhanced activities than the other two.
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Affiliation(s)
- P Krishnamoorthy
- Department of Chemistry, Bharathiar University, Coimbatore 641 046, India
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137
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You ZL, Cui YM, Ma YP, Wang C, Zhou XS, Li K. Synthesis, characterization and urease inhibitory activity of oxovanadium(V) complexes with similar Schiff bases. INORG CHEM COMMUN 2011. [DOI: 10.1016/j.inoche.2011.01.038] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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138
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Čajan M, Trávníček Z. Structural (X-ray), spectral (FT-IR and Raman) and quantum chemical investigations of a series of 6-benzylaminopurine derivatives. J Mol Struct 2011. [DOI: 10.1016/j.molstruc.2011.03.049] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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139
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Prakash J, Kodanko JJ. Selective Inactivation of Serine Proteases by Nonheme Iron Complexes. Inorg Chem 2011; 50:3934-45. [DOI: 10.1021/ic102320j] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Jai Prakash
- Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, Michigan 48202, United States
| | - Jeremy J. Kodanko
- Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, Michigan 48202, United States
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140
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Mahajan S, Singh B, Sharma M, Sheikh HN, Kalsotra BL. Diperoxo Complexes of Vanadium(V) Containing Mannich Base Ligands. CHINESE J CHEM 2011. [DOI: 10.1002/cjoc.201190060] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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141
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Maurya MR, Bisht M, Kumar A, Kuznetsov ML, Avecilla F, Pessoa JC. Synthesis, characterization, reactivity and catalytic activity of oxidovanadium(iv), oxidovanadium(v) and dioxidovanadium(v) complexes of benzimidazole modified ligands. Dalton Trans 2011; 40:6968-83. [DOI: 10.1039/c1dt10261c] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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142
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Man BYW, Chan HM, Leung CH, Chan DSH, Bai LP, Jiang ZH, Li HW, Ma DL. Group 9 metal-based inhibitors of β-amyloid (1–40) fibrillation as potential therapeutic agents for Alzheimer's disease. Chem Sci 2011. [DOI: 10.1039/c0sc00636j] [Citation(s) in RCA: 109] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
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143
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Mathew V, Keshavayya J, Vaidya VP, Khan MHM. Triazoles as complexing agents: synthesis, characterization and pharmacological activities of copper complexes of 4-amino-3-mercapto-5-substituted aryl-1,2,4-triazoles. J COORD CHEM 2010. [DOI: 10.1080/00958970801950615] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Vinod Mathew
- a Acharya & B. M. Reddy College of Pharmacy , Bangalore-560 090, Karnataka, India
| | - J. Keshavayya
- b School of Studies in Chemistry , Kuvempu University , Jnana Sahayadri, Shankaraghatta – 577 451, Shimoga, Karnataka, India
| | - V. P. Vaidya
- b School of Studies in Chemistry , Kuvempu University , Jnana Sahayadri, Shankaraghatta – 577 451, Shimoga, Karnataka, India
| | - M. H. Moinuddin Khan
- c Department of Chemistry , J.N.N. College of Engineering , Shimoga, Karnataka, India
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144
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Poth KJ, Guminski AD, Thomas GP, Leo PJ, Jabbar IA, Saunders NA. Cisplatin treatment induces a transient increase in tumorigenic potential associated with high interleukin-6 expression in head and neck squamous cell carcinoma. Mol Cancer Ther 2010; 9:2430-9. [PMID: 20682658 DOI: 10.1158/1535-7163.mct-10-0258] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Head and neck squamous cell carcinoma (HNSCC) is characterized by the 5-year survival rate of approximately 50%. Despite aggressive surgical, radiation, and chemotherapeutic interventions, 30% to 40% of patients die from the development of recurrent or disseminated disease that is resistant to chemotherapy. As a model of recurrence, we examined the effects of cisplatin on the ability of head and neck cancer cells to initiate tumors in a xenotransplant model. HNSCC cells were treated in vitro with cisplatin at a concentration that elicited >99% cytotoxicity and assessed for tumorigenic potential in nonobese diabetic/severe combined immunodeficient mice. HNSCC cells that survived cisplatin treatment formed tumors in nonobese diabetic/severe combined immunodeficient mice more efficiently than nontreated cells. Cisplatin-resistant cells were characterized using clonal analysis, in vivo imaging, and transcriptomic profiling. Preliminary functional assessment of a gene, interleukin-6 (IL-6), highly upregulated in cisplatin-treated cells was carried out using clonogenicity and tumorigenicity assays. We show that cisplatin-induced IL-6 expression can contribute to the increase in tumorigenic potential of head and neck cancer cells but does not contribute to cisplatin resistance. Finally, through clonal analysis, we show that cisplatin-induced IL-6 expression and cisplatin-induced tumorigenicity are stochastically derived. We report that cisplatin treatment of head and neck cancer cells results in a transient accumulation of cisplatin-resistant, small, and IL-6-positive cells that are highly tumorigenic. These data also suggest that therapies that reduce IL-6 action may reduce recurrence rates and/or increase disease-free survival times in head and neck cancer patients, and thus, IL-6 represents a promising new target in HNSCC treatment.
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Affiliation(s)
- Kim J Poth
- Diamantina Institute, The University of Queensland, Princess Alexandra Hospital, Ipswich Road, Brisbane, Queensland, Australia
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145
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N,N-dimethylbiguanide complexes displaying low cytotoxicity as potential large spectrum antimicrobial agents. Eur J Med Chem 2010; 45:3027-34. [DOI: 10.1016/j.ejmech.2010.03.033] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2009] [Revised: 01/28/2010] [Accepted: 03/23/2010] [Indexed: 11/19/2022]
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146
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Some new biologically active metal-based sulfonamide. Eur J Med Chem 2010; 45:2893-901. [DOI: 10.1016/j.ejmech.2010.03.014] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2010] [Revised: 03/09/2010] [Accepted: 03/10/2010] [Indexed: 11/21/2022]
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147
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Effect of the axial ligands on the structure and reactivity of tin verdoheme in the ring opening process. Inorganica Chim Acta 2010. [DOI: 10.1016/j.ica.2009.12.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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148
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Olar R, Badea M, Marinescu D, Chifiriuc CM, Bleotu C, Grecu MN, Iorgulescu EE, Bucur M, Lazar V, Finaru A. Prospects for new antimicrobials based on N,N-dimethylbiguanide complexes as effective agents on both planktonic and adhered microbial strains. Eur J Med Chem 2010; 45:2868-75. [PMID: 20363535 DOI: 10.1016/j.ejmech.2010.03.009] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2009] [Revised: 03/08/2010] [Accepted: 03/09/2010] [Indexed: 11/19/2022]
Abstract
Metal-free N,N-dimethylbiguanidium acetate and novel complexes M(DMBG)(2)(CH(3)COO)(2).nH(2)O (M: Mn(II), Ni(II), Cu(II) and Zn(II)) were screened for their antimicrobial properties against Gram-positive (Bacillus subtilis, Listeria monocytogenes, Staphylococcus aureus), Gram-negative (Klebsiella pneumoniae, Escherichia coli, Pseudomonas aeruginosa) bacteria and fungal (Candida albicans) strains. The ability of compounds to inhibit the microbial adherence ability to the inert substratum as well as their cytotoxicity was also assessed. Our results are demonstrating that some of the tested compounds are exhibiting potent antimicrobial activity accompanied by low cytotoxicity on HeLa cells. The complexes were characterized using microanalytical, IR, EPR, (1)H NMR as well as UV-vis methods. The redox behaviour of complexes was investigated by cyclic voltammetry. The new derivative (HDMBG)(CH(3)COO) crystallizes in the monoclinic P2(1)/n space group as X-ray single-crystal data indicate.
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Affiliation(s)
- Rodica Olar
- Department of Inorganic Chemistry, University of Bucharest, 90-92 Panduri St., 050663 Bucharest, Romania.
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149
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Development of antimicrobial aminoacid-modified bisphenol-A formaldehyde resin and its transition-metal complexes. Polym Bull (Berl) 2010. [DOI: 10.1007/s00289-009-0154-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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150
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Arnesano F, Boccarelli A, Cornacchia D, Nushi F, Sasanelli R, Coluccia M, Natile G. Mechanistic insight into the inhibition of matrix metalloproteinases by platinum substrates. J Med Chem 2009; 52:7847-55. [PMID: 19757821 DOI: 10.1021/jm900845t] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Platinum compounds are among the most used DNA-damaging anticancer drugs, however they can also be tailored to target biological substrates different from DNA, for instance enzymes involved in cancer progression. We recently reported that some platinum complexes with three labile ligands inhibit matrix metalloproteinase activity in a selective way. We have now extended the investigation to a series of platinum complexes having three chlorido or one chlorido and a dimethylmalonato leaving ligands. All compounds are strong inhibitors of MMP-3 by a noncompetitive mechanism, while platinum drugs in clinical use are not. Structural investigations reveal that the platinum substrate only loses two labile ligands, which are replaced by an imidazole nitrogen of His224 and a hydroxyl group, while it retains one chlorido ligand. A chlorido and a hydroxyl group are also present in the zinc complex inhibitor of carboxypeptidase A, whose active site has strong analogies with that of MMP-3.
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Affiliation(s)
- Fabio Arnesano
- Dipartimento Farmaco-Chimico, University of Bari A Moro, Via Edoardo Orabona 4, 70125 Bari, Italy
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