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Al-Zaqri N, Salih KSM, Awwadi FF, Alsalme A, Alharthi FA, Alsyahi A, Ali AA, Zarrouk A, Aljohani M, Chetouni A, Warad I. Synthesis, physicochemical, thermal, and XRD/HSA interactions of mixed [Cu(Bipy)(Dipn)](X)2 complexes: DNA binding and molecular docking evaluation. J COORD CHEM 2020. [DOI: 10.1080/00958972.2020.1841898] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Nabil Al-Zaqri
- Department of Chemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
- Department of Chemistry, College of Science, Ibb University, Ibb, Yemen
| | - Kifah S. M. Salih
- Department of Chemistry and Earth Sciences, Qatar University, Doha, Qatar
| | - Firas F. Awwadi
- Chemistry Department, Faculty of Science, The University of Jordan, Amman, Jordan
| | - Ali Alsalme
- Department of Chemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Fahad A. Alharthi
- Department of Chemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Amjad Alsyahi
- Department of Chemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Anas Al Ali
- Department of Chemistry, Science College, An-Najah National University, Nablus, Palestine
| | - Abdelkader Zarrouk
- Laboratory of Materials, Nanotechnology and Environment, Faculty of Sciences, Mohammed V University, Agdal-Rabat, Morocco
| | - Meshari Aljohani
- Department of Chemistry, Faculty of Science, University of Tabuk, Tabuk, Saudi Arabia
| | - Ahmed Chetouni
- Laboratoire de Chimie Analytique Appliquée, Matériaux et Environnement (LC2AME), Faculté des Sciences, Université Mohamed I, Oujda, Morocco
| | - Ismail Warad
- Department of Chemistry and Earth Sciences, Qatar University, Doha, Qatar
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Banerjee S, Selim M, Saha A, Mukherjea KK. Radiation induced DNA damage and its protection by a gadolinium(III) complex: Spectroscopic, molecular docking and gel electrophoretic studies. Int J Biol Macromol 2019; 127:520-528. [PMID: 30633933 DOI: 10.1016/j.ijbiomac.2019.01.031] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Revised: 12/21/2018] [Accepted: 01/07/2019] [Indexed: 12/24/2022]
Abstract
The current work describes the efficacy of an artificially synthesized Gd(III) complex as a potential radioprotecting molecule. The work involves utilization of spectroscopic and electrophoretic techniques to investigate the radioprotecting behavior of the Gd(III) complex. Spectroscopic studies revealed that the complex interacted strongly with DNA while molecular docking studies suggested groove binding through H-bond formation and other non-covalent interactions. The Gd(III) complex was found to impart 94% and 91% protection to irradiatively damaged DNA at radiation doses of 20 and 25 Gy respectively. The protection is believed to occur via radical scavenging mechanism and the antioxidant behavior of the complex suggested a strong radical scavenging property.
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Affiliation(s)
| | - Md Selim
- Department of Chemistry, Vivekananda College, Thakurpukur, Kolkata 700063, India
| | - Abhijit Saha
- UGC-DAE-CSR, Kolkata Centre, Bidhannagar, Kolkata 700098, India
| | - Kalyan K Mukherjea
- Department of Chemistry, Jadavpur University, Kolkata 700032, India; Department of Chemistry, Aliah University, Newtown, Kolkata 700160, India.
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Studies on Photocleavage, DNA Binding, Cytotoxicity, and Docking Studies of Ruthenium(II) Mixed Ligand Complexes. J Fluoresc 2016; 26:2119-2132. [DOI: 10.1007/s10895-016-1908-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Accepted: 08/15/2016] [Indexed: 01/13/2023]
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5
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Li A, Liu YH, Yuan LZ, Ma ZY, Zhao CL, Xie CZ, Bao WG, Xu JY. Association of structural modifications with bioactivity in three new copper(II) complexes of Schiff base ligands derived from 5-chlorosalicylaldehyde and amino acids. J Inorg Biochem 2015; 146:52-60. [DOI: 10.1016/j.jinorgbio.2015.02.013] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2014] [Revised: 02/20/2015] [Accepted: 02/20/2015] [Indexed: 12/13/2022]
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D'Souza F, Imahori H. Preface — Special Issue in Honor of Professor Shunichi Fukuzumi. J PORPHYR PHTHALOCYA 2015. [DOI: 10.1142/s1088424615020010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Paul SS, Selim M, Saha A, Mukherjea KK. Synthesis and structural characterization of dioxomolybdenum and dioxotungsten hydroxamato complexes and their function in the protection of radiation induced DNA damage. Dalton Trans 2014; 43:2835-48. [PMID: 24336831 DOI: 10.1039/c3dt52434e] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The synthesis and structural characterization of two novel dioxomolybdenum(VI) (1) and dioxotungsten(VI) (2) complexes with 2-phenylacetylhydroxamic acid (PAHH) [M(O)2(PAH)2] [M = Mo, W] have been accomplished. The dioxomolybdenum(VI) and dioxotungsten(VI) moiety is coordinated by the hydroxamate group (-CONHO(-)) of the 2-phenylacetylhydroxamate (PAH) ligand in a bi-dentate fashion. In both the complexes the PAHH ligand is coordinated through oxygen atoms forming a five membered chelate. The hydrogen atom of N-H of the hydroxamate group is engaged in intermolecular H-bonding with the carbonyl oxygen of another coordinated hydroxamate ligand, thereby forming an extended 1D chain. The ligand as well as both the complexes exhibit the ability to protect from radiation induced damage both in CTDNA as well as in pUC19 plasmid DNA. As the damage to DNA is caused by the radicals generated during radiolysis, its scavenging imparts protection from the damage to DNA. To understand the mechanism of protection, binding affinities of the ligand and the complex with DNA were determined using absorption and emission spectral studies and viscosity measurements, whereby the results indicate that both the complexes and the hydroxamate ligand interact with calf thymus DNA in the minor groove. The intrinsic binding constants, obtained from UV-vis studies, are 7.2 × 10(3) M(-1), 5.2 × 10(4) M(-1) and 1.2 × 10(4) M(-1) for the ligand and complexes 1 and 2 respectively. The Stern-Volmer quenching constants obtained from a luminescence study for both the complexes are 5.6 × 10(4) M(-1) and 1.6 × 10(4) M(-1) respectively. The dioxomolybdenum(VI) complex is found to be a more potent radioprotector compared to the dioxotungsten(VI) complex and the ligand. Radical scavenging chemical studies suggest that the complexes have a greater ability to scavenge both the hydroxyl as well as the superoxide radicals compared to the ligand. The free radical scavenging ability of the ligand and the complexes was further established by EPR spectroscopy using a stable free radical, the DPPH, as a probe. The experimental results of DNA binding are further supported by molecular docking studies.
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Affiliation(s)
- Shiv Shankar Paul
- Department of Chemistry, Jadavpur University, Calcutta, Kolkata-700032, India.
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Chen GJ, Wang ZG, Kou YY, Tian JL, Yan SP. Impact of metal on the DNA photo-induced cleavage activity of a family of Phterpy complexes. J Inorg Biochem 2013; 122:49-56. [DOI: 10.1016/j.jinorgbio.2013.01.010] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2012] [Revised: 01/12/2013] [Accepted: 01/16/2013] [Indexed: 10/27/2022]
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Prasad P, Khan I, Sasmal PK, Koley D, Kondaiah P, Chakravarty AR. Planar triazinium cations from vanadyl-mediated ring cyclizations: the thiazole species for efficient nuclear staining and photocytotoxicity. Dalton Trans 2013; 42:4436-49. [DOI: 10.1039/c2dt32810k] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Lahiri D, Majumdar R, Mallick D, Goswami TK, Dighe RR, Chakravarty AR. Remarkable photocytotoxicity in hypoxic HeLa cells by a dipyridophenazine copper(II) Schiff base thiolate. J Inorg Biochem 2011; 105:1086-94. [PMID: 21726772 DOI: 10.1016/j.jinorgbio.2011.05.010] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2011] [Revised: 05/12/2011] [Accepted: 05/18/2011] [Indexed: 12/01/2022]
Abstract
Copper(II) complexes [Cu(satp)(L)] (1-3) of a Schiff base thiolate (salicylidene-2-aminothiophenol, H2satp) and phenanthroline bases (L), viz. 1,10-phenanthroline (phen in 1), dipyrido[3,2-d:2',3'-f]quinoxaline (dpq in 2) and dipyrido[3,2-a:2',3'-c]phenazine (dppz in 3), were prepared, characterized and their anaerobic DNA photocleavage activity and hypoxic photocytotoxicity studied. The redox active complexes show the Cu(II)-Cu(I) couple near -0.5 V for 1 and near 0.0 V vs. SCE (saturated calomel electrode) for 2 and 3. The one-electron paramagnetic complexes (~1.85 μB) are avid DNA binders giving Kb values within 1.0×10(5)-8.0×10(5) M(-1). Thermal melting and viscosity data along with molecular docking calculations suggest DNA groove and/or partial intercalative binding of the complexes. The complexes show anaerobic DNA cleavage activity in red light under argon via type-I pathway, while DNA photocleavage in air proceeds via hydroxyl radical pathway. The DFT (density functional theory) calculations reveal a thyil radical pathway for the anaerobic DNA photocleavage activity and suggest the possibility of generation of a transient copper(I) species due to bond breakage between the copper and sulfur to generate the thyil radical. An oxidation of the copper(I) species is likely by oxygen in an aerobic medium or by the buffer medium in an anaerobic condition. Complex 3 exhibits significant photocytotoxicity in HeLa cells (IC50=8.3(±1.0) μM) in visible light, while showing lower dark toxicity (IC50=17.2(±1.0) μM). A significant reduction in the dark toxicity is observed under hypoxic cellular conditions (IC50=30.0(±1.0) μM in dark), while retaining its photocytotoxicity (IC50=8.0(±1.0) μM).
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Affiliation(s)
- Debojyoti Lahiri
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Sir C. V. Raman Avenue, Bangalore 560012, India
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Ito T, Uchida T, Tanabe K, Yamada H, Nishimoto SI. Photoinduced electron injection into DNA by N-cyclopropyl-1-aminonaphthalene. J Photochem Photobiol A Chem 2011. [DOI: 10.1016/j.jphotochem.2011.01.025] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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12
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Chen GJ, Qiao X, Qiao PQ, Xu GJ, Xu JY, Tian JL, Gu W, Liu X, Yan SP. Synthesis, DNA binding, photo-induced DNA cleavage, cytotoxicity and apoptosis studies of copper(II) complexes. J Inorg Biochem 2011; 105:119-26. [DOI: 10.1016/j.jinorgbio.2010.11.008] [Citation(s) in RCA: 87] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2010] [Revised: 11/06/2010] [Accepted: 11/08/2010] [Indexed: 10/18/2022]
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13
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One pot synthesis of Cu(II) 2,2′-bipyridyl complexes of 5-hydroxy-hydurilic acid and alloxanic acid: Synthesis, crystal structure, chemical nuclease activity and cytotoxicity. J Inorg Biochem 2011; 105:256-67. [DOI: 10.1016/j.jinorgbio.2010.11.006] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2010] [Revised: 11/04/2010] [Accepted: 11/05/2010] [Indexed: 11/22/2022]
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14
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Prasad P, Khan I, Sasmal PK, Koley D, Kondaiah P, Chakravarty AR. Planar triazinium cations from VO2+-assisted ring cyclizations: a remarkably efficient thiazole species for nuclear staining, PDT and anaerobic photocleavage of DNA. Chem Commun (Camb) 2011; 47:3954-6. [DOI: 10.1039/c0cc05386d] [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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15
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Doherty MD, Grills DC, Muckerman JT, Polyansky DE, Fujita E. Toward more efficient photochemical CO2 reduction: Use of scCO2 or photogenerated hydrides. Coord Chem Rev 2010. [DOI: 10.1016/j.ccr.2009.12.013] [Citation(s) in RCA: 127] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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16
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Saha S, Majumdar R, Dighe RR, Chakravarty AR. Enhanced photodynamic effect of cobalt(III) dipyridophenazine complex on thyrotropin receptor expressing HEK293 cells. Metallomics 2010; 2:754-65. [PMID: 21072367 DOI: 10.1039/c0mt00028k] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Ternary cobalt(III) complexes [CoL(B)] (1-3) of a trianionic tetradentate phenolate-based ligand (L) and phenanthroline bases (B), viz. 1,10-phenanthroline (phen in 1), dipyridoquinoxaline (dpq in 2) and dipyridophenazine (dppz in 3) are synthesized, characterized from X-ray crystallographic, analytical and spectral techniques, and their utility in photodynamic therapy (PDT) of thyroid diseases caused by TSH receptor dysfunction is probed. The complexes display a visible spectral band within the PDT spectral window at ~690 nm. Photodynamic potential was estimated through DNA cleavage activity of the dpq and dppz complexes in UV-A light of 365 nm and red light of 676 nm. The reactions proceed via the hydroxyl radical pathway. The complexes retain their DNA photocleavage activity in red light under anaerobic conditions, a situation normally prevails in hypoxic tumor core. Investigation into the photocytotoxic potential of these complexes showed that the dppz complex 3 is approximately 4-fold more active in the HEK293 cells expressing human thyrotropin receptor (HEK293-hTSHR) than in the parental cell line and has an insignificant effect on an unrelated human cervical carcinoma cell line (HeLa). Photoexcitation of complex 3 in HEK293-hTSHR cells leads to damage hTSHR as evidenced from the decrease in cAMP formation both in absence and presence of hTSH and decrease in the TSHR immunofluorescence with a concomitant cytoplasmic translocation of the membrane protein, cadherin. The involvement of hTSHR is evidenced from the ability of complex 3 to bind to the extracellular domain of hTSHR (hTSHR-ECD) with a K(d) value of 81 nM and from the photocleavage of hTSHR-ECD.
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Affiliation(s)
- Sounik Saha
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore, Karnataka, India
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Lahiri D, Majumdar R, Patra AK, Chakravarty AR. Anaerobic DNA cleavage in red light by dicopper(II) complexes on disulphide bond activation. J CHEM SCI 2010. [DOI: 10.1007/s12039-010-0037-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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18
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Cohen BW, Polyansky DE, Zong R, Zhou H, Ouk T, Cabelli DE, Thummel RP, Fujita E. Differences of pH-Dependent Mechanisms on Generation of Hydride Donors using Ru(II) Complexes Containing Geometric Isomers of NAD+ Model Ligands: NMR and Radiolysis Studies in Aqueous Solution. Inorg Chem 2010; 49:8034-44. [DOI: 10.1021/ic101098v] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Brian W. Cohen
- Chemistry Department, Brookhaven National Laboratory, Upton, New York 11973-5000
| | - Dmitry E. Polyansky
- Chemistry Department, Brookhaven National Laboratory, Upton, New York 11973-5000
| | - Ruifa Zong
- Department of Chemistry, University of Houston, Houston, Texas 77204-5003
| | - Hui Zhou
- Department of Chemistry, University of Houston, Houston, Texas 77204-5003
| | - Theany Ouk
- Department of Chemistry, University of Houston, Houston, Texas 77204-5003
| | - Diane E. Cabelli
- Chemistry Department, Brookhaven National Laboratory, Upton, New York 11973-5000
| | | | - Etsuko Fujita
- Chemistry Department, Brookhaven National Laboratory, Upton, New York 11973-5000
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Lahiri D, Bhowmick T, Banik B, Railkar R, Ramakumar S, Dighe RR, Chakravarty AR. Photocytotoxic and anaerobic DNA cleavage activity of binuclear 3,3′-dithiodipropionic acid cobalt(II) complexes having phenanthroline bases. Polyhedron 2010. [DOI: 10.1016/j.poly.2010.05.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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20
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Tanaka M, Elias B, Barton JK. DNA-mediated electron transfer in naphthalene-modified oligonucleotides. J Org Chem 2010; 75:2423-8. [PMID: 20297784 PMCID: PMC2879047 DOI: 10.1021/jo1000862] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Naphthalene-modified oligonucleotides have been synthesized and characterized with respect to electron transfer chemistry. Using the Sonogashira coupling reaction, naphthalene can be covalently anchored onto a modified uridine through an ethynyl linkage. This tethering allows for effective electronic coupling with the DNA bases, resulting in a significant red shift of the absorption bands of the naphthalenic chromophore. Modification with this chromophore does not appear to affect the overall stability and structure of the DNA. Upon selective irradiation of the naphthalene moiety at 340 nm, photoreduction of a distal electron trap, 5-bromouridine, embedded in the DNA base stack occurs. This DNA-mediated reduction from a distance was found to be significantly more efficient with substitution of 5-bromouridine toward the 5'-end than toward the 3'-end. These results support a general preference for electron transfer through DNA toward the 5'-end, irrespective of the donor. In addition, differences in efficiency of photoreduction through intrastrand and interstrand pathways are observed. For DNA-mediated reduction, as with DNA-mediated oxidation, significant differences in the charge transfer reaction are apparent that depend upon subtle differences in coupling into the DNA base stack.
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Affiliation(s)
| | | | - Jacqueline K. Barton
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California
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Szyperska A, Rak J, Leszczynski J, Li X, Ko YJ, Wang H, Bowen KH. Low-Energy-Barrier Proton Transfer Induced by Electron Attachment to the Guanine⋅⋅⋅Cytosine Base Pair. Chemphyschem 2010; 11:880-8. [DOI: 10.1002/cphc.200900810] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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22
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Lahiri D, Roy S, Saha S, Majumdar R, Dighe RR, Chakravarty AR. Anaerobic DNA cleavage activity in red light and photocytotoxicity of (pyridine-2-thiol)cobalt(iii) complexes of phenanthroline bases. Dalton Trans 2010; 39:1807-16. [DOI: 10.1039/b917860k] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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23
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Chen GJ, Qiao X, Tian JL, Xu JY, Gu W, Liu X, Yan SP. Synthesis, DNA binding, photo-induced DNA cleavage and cytotoxicity studies of europium(iii) complexes. Dalton Trans 2010; 39:10637-43. [DOI: 10.1039/c0dt00718h] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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Kawashima T, Ohkubo K, Fukuzumi S. Photoinduced DNA cleavage by formation of ROS from oxygen with a neurotransmitter and aromatic amino acids. Org Biomol Chem 2010; 8:994-6. [DOI: 10.1039/b924560j] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Lahiri D, Bhowmick T, Pathak B, Shameema O, Patra AK, Ramakumar S, Chakravarty AR. Anaerobic photocleavage of DNA in red light by dicopper(II) complexes of 3,3'-dithiodipropionic acid. Inorg Chem 2009; 48:339-49. [PMID: 19055345 DOI: 10.1021/ic800806j] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Binuclear copper(II) complexes [{(phen)Cu(II)}(2)(mu-dtdp)(2)] (1), [{(dpq)Cu(II)}(2)(mu-dtdp)(2)] (2), [{(phen)Cu(II)}(2)(mu-az)(2)] (3), and [{(dpq)Cu(II)}(2)(mu-az)(2)] (4) and a zinc(II) complex [{(phen)Zn(II)}(2)(mu-dtdp)(2)] (5), having 3,3'-dithiodipropionic acid (H(2)dtdp), azelaic acid (nonanedioic acid), 1,10-phenanthroline (phen), and dipyrido[3,2-d:2',3'-f]quinoxaline (dpq), were prepared and characterized by physicochemical methods. Complex 1 has been structurally characterized by X-ray crystallography. The complexes have each metal center bound to a chelating phenanthroline base and two bridging carboxylate ligands giving a square-planar MN(2)O(2) coordination geometry. The molecular structure of complex 1 shows two sterically constrained disulfide moieties of the dtdp ligands. The complexes show good binding propensity to calf thymus DNA in the major groove. The photoinduced DNA cleavage activity of the complexes has been studied using 365 nm UV light and 647.1 nm and >750 nm red light under both aerobic and anaerobic conditions. The phen complex 1, having dtdp ligand, cleaves supercoiled (SC) DNA to its nicked circular (NC) form. The dpq analogue 2 shows formation of a significant quantity of linear DNA resulting from double-strand breaks (dsb) in air. Mechanistic studies reveal the involvement of HO(*) and (1)O(2) as the reactive species under an aerobic medium. The dsb of DNA is rationalized from the docking studies on 2, showing a close proximity of two photosensitizers, namely, the disulfide moiety of dtdp and the quinoxaline ring of dpq to the complementary strands of DNA. The copper(II) complexes of the dtdp ligand cleave SC DNA to its NC form upon exposure to UV or red light under an argon atmosphere. An enhancement of the DNA cleavage activity under argon has been observed upon increasing the concentration of the DMF solvent in the DMF-Tris buffer medium. Theoretical studies suggest the possibility of sulfide anion radical formation from a copper(II)-bound dtdp ligand in >750 nm red light, which further cleaves the DNA. The copper(II) azelate complexes are inactive under similar reaction conditions. The azelate complex of the dpq ligand cleaves DNA in air following the (1)O(2) pathway. The zinc(II) complex of the dtdp ligand (5) does not show any photoinduced DNA cleavage activity in red light.
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Affiliation(s)
- Debojyoti Lahiri
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
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Influence of inclusion complexation with β-cyclodextrin on the photostability of selected imidazoline-derived drugs. J INCL PHENOM MACRO 2008. [DOI: 10.1007/s10847-008-9493-6] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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27
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Brzhevskaya ON, Degtyarev EN, Zhuravleva TS, Zubkov AS, Klimenko IV, Sheksheev EM, Nedelina OS. Dissociative photoelectron capture as a model for low-energy electron accepting in biochemical reactions. DOKL BIOCHEM BIOPHYS 2008; 420:119-23. [DOI: 10.1134/s160767290803006x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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28
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Polyansky DE, Cabelli D, Muckerman JT, Fukushima T, Tanaka K, Fujita E. Mechanism of Hydride Donor Generation Using a Ru(II) Complex Containing an NAD+ Model Ligand: Pulse and Steady-State Radiolysis Studies. Inorg Chem 2008; 47:3958-68. [DOI: 10.1021/ic702139n] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Dmitry E. Polyansky
- Chemistry Department, Brookhaven National Laboratory, Upton, New York 11973-5000, and Institute for Molecular Science, 5-1 Higashiyama, Myodaiji, Okazaki, Aichi 444-8787, Japan
| | - Diane Cabelli
- Chemistry Department, Brookhaven National Laboratory, Upton, New York 11973-5000, and Institute for Molecular Science, 5-1 Higashiyama, Myodaiji, Okazaki, Aichi 444-8787, Japan
| | - James T. Muckerman
- Chemistry Department, Brookhaven National Laboratory, Upton, New York 11973-5000, and Institute for Molecular Science, 5-1 Higashiyama, Myodaiji, Okazaki, Aichi 444-8787, Japan
| | - Takashi Fukushima
- Chemistry Department, Brookhaven National Laboratory, Upton, New York 11973-5000, and Institute for Molecular Science, 5-1 Higashiyama, Myodaiji, Okazaki, Aichi 444-8787, Japan
| | - Koji Tanaka
- Chemistry Department, Brookhaven National Laboratory, Upton, New York 11973-5000, and Institute for Molecular Science, 5-1 Higashiyama, Myodaiji, Okazaki, Aichi 444-8787, Japan
| | - Etsuko Fujita
- Chemistry Department, Brookhaven National Laboratory, Upton, New York 11973-5000, and Institute for Molecular Science, 5-1 Higashiyama, Myodaiji, Okazaki, Aichi 444-8787, Japan
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Fukuzumi S, Ohkubo K, Zheng X, Chen Y, Pandey RK, Zhan R, Kadish KM. Metal Bacteriochlorins Which Act as Dual Singlet Oxygen and Superoxide Generators. J Phys Chem B 2008; 112:2738-46. [DOI: 10.1021/jp0766757] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Shunichi Fukuzumi
- Department of Material and Life Science, Graduate School of Engineering, Osaka University, SORST, Japan Science and Technology Agency (JST), Suita, Osaka 565-0871, Japan, Chemistry Division, Photodynamic Therapy Center, Roswell Park Cancer Institute (RPCI), Buffalo, New York 14263, Department of Nuclear Medicine, Roswell Park Cancer Institute, Buffalo, New York 14263, Department of Chemistry, University of Houston, Houston, Texas 77204-5003
| | - Kei Ohkubo
- Department of Material and Life Science, Graduate School of Engineering, Osaka University, SORST, Japan Science and Technology Agency (JST), Suita, Osaka 565-0871, Japan, Chemistry Division, Photodynamic Therapy Center, Roswell Park Cancer Institute (RPCI), Buffalo, New York 14263, Department of Nuclear Medicine, Roswell Park Cancer Institute, Buffalo, New York 14263, Department of Chemistry, University of Houston, Houston, Texas 77204-5003
| | - Xiang Zheng
- Department of Material and Life Science, Graduate School of Engineering, Osaka University, SORST, Japan Science and Technology Agency (JST), Suita, Osaka 565-0871, Japan, Chemistry Division, Photodynamic Therapy Center, Roswell Park Cancer Institute (RPCI), Buffalo, New York 14263, Department of Nuclear Medicine, Roswell Park Cancer Institute, Buffalo, New York 14263, Department of Chemistry, University of Houston, Houston, Texas 77204-5003
| | - Yihui Chen
- Department of Material and Life Science, Graduate School of Engineering, Osaka University, SORST, Japan Science and Technology Agency (JST), Suita, Osaka 565-0871, Japan, Chemistry Division, Photodynamic Therapy Center, Roswell Park Cancer Institute (RPCI), Buffalo, New York 14263, Department of Nuclear Medicine, Roswell Park Cancer Institute, Buffalo, New York 14263, Department of Chemistry, University of Houston, Houston, Texas 77204-5003
| | - Ravindra K. Pandey
- Department of Material and Life Science, Graduate School of Engineering, Osaka University, SORST, Japan Science and Technology Agency (JST), Suita, Osaka 565-0871, Japan, Chemistry Division, Photodynamic Therapy Center, Roswell Park Cancer Institute (RPCI), Buffalo, New York 14263, Department of Nuclear Medicine, Roswell Park Cancer Institute, Buffalo, New York 14263, Department of Chemistry, University of Houston, Houston, Texas 77204-5003
| | - Riqiang Zhan
- Department of Material and Life Science, Graduate School of Engineering, Osaka University, SORST, Japan Science and Technology Agency (JST), Suita, Osaka 565-0871, Japan, Chemistry Division, Photodynamic Therapy Center, Roswell Park Cancer Institute (RPCI), Buffalo, New York 14263, Department of Nuclear Medicine, Roswell Park Cancer Institute, Buffalo, New York 14263, Department of Chemistry, University of Houston, Houston, Texas 77204-5003
| | - Karl M. Kadish
- Department of Material and Life Science, Graduate School of Engineering, Osaka University, SORST, Japan Science and Technology Agency (JST), Suita, Osaka 565-0871, Japan, Chemistry Division, Photodynamic Therapy Center, Roswell Park Cancer Institute (RPCI), Buffalo, New York 14263, Department of Nuclear Medicine, Roswell Park Cancer Institute, Buffalo, New York 14263, Department of Chemistry, University of Houston, Houston, Texas 77204-5003
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Elias B, Shao F, Barton JK. Charge migration along the DNA duplex: hole versus electron transport. J Am Chem Soc 2008; 130:1152-3. [PMID: 18183988 DOI: 10.1021/ja710358p] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Benjamin Elias
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, USA
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Roy M, Pathak B, Patra AK, Jemmis ED, Nethaji M, Chakravarty AR. New Insights into the Visible-Light-Induced DNA Cleavage Activity of Dipyridoquinoxaline Complexes of Bivalent 3d-Metal Ions. Inorg Chem 2007; 46:11122-32. [DOI: 10.1021/ic701450a] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Mithun Roy
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - Biswarup Pathak
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - Ashis K. Patra
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - Eluvathingal D. Jemmis
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - Munirathinam Nethaji
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - Akhil R. Chakravarty
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
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Liang X, Chen G, Zhang X, Liu S, Li G. Study of UVA irradiation on hemoglobin in the presence of NADH. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2007; 90:53-6. [PMID: 18086531 DOI: 10.1016/j.jphotobiol.2007.11.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2007] [Revised: 11/03/2007] [Accepted: 11/03/2007] [Indexed: 11/16/2022]
Abstract
Reduction of ferric methemoglobin (metHb) to its ferrous form is observed by short-time ultraviolet A (UVA) irradiation of metHb together with nicotinamide adenine dinucleotide (NADH). And, severely structural destruction of metHb occurs when long-time UVA irradiation is exerted. However, neither reduction nor destruction can be observed in the absence of NADH under otherwise the same experimental conditions. Accordingly, the O2-binding ability of the protein increases by short-time UVA irradiation of metHb together with NADH, which corresponds with the reduction of metHb, while it decreases by long-time UVA irradiation, which corresponds with the structural destruction. Besides, it is found that the reduction reaction and the conformational destruction proceed more rapidly with higher concentrations of NADH.
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Affiliation(s)
- Xiaoqiang Liang
- School of Life Science and Shanghai Key Laboratory of Bio-Energy Crops, Shanghai University, Shanghai 200444, PR China
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Polyansky D, Cabelli D, Muckerman JT, Fujita E, Koizumi TA, Fukushima T, Wada T, Tanaka K. Photochemical and radiolytic production of an organic hydride donor with a Ru(II) complex containing an NAD+ model ligand. Angew Chem Int Ed Engl 2007; 46:4169-72. [PMID: 17450514 DOI: 10.1002/anie.200700304] [Citation(s) in RCA: 83] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Dmitry Polyansky
- Chemistry Department, Brookhaven National Laboratory, Upton, NY 11973-5000, USA
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Polyansky D, Cabelli D, Muckerman J, Fujita E, Koizumi TA, Fukushima T, Wada T, Tanaka K. Photochemical and Radiolytic Production of an Organic Hydride Donor with a RuII Complex Containing an NAD+ Model Ligand. Angew Chem Int Ed Engl 2007. [DOI: 10.1002/ange.200700304] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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