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Gibney A, de Paiva REF, Singh V, Fox R, Thompson D, Hennessy J, Slator C, McKenzie CJ, Johansson P, McKee V, Westerlund F, Kellett A. A Click Chemistry-Based Artificial Metallo-Nuclease. Angew Chem Int Ed Engl 2023; 62:e202305759. [PMID: 37338105 DOI: 10.1002/anie.202305759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 06/14/2023] [Accepted: 06/19/2023] [Indexed: 06/21/2023]
Abstract
Artificial metallo-nucleases (AMNs) are promising DNA damaging drug candidates. Here, we demonstrate how the 1,2,3-triazole linker produced by the Cu-catalysed azide-alkyne cycloaddition (CuAAC) reaction can be directed to build Cu-binding AMN scaffolds. We selected biologically inert reaction partners tris(azidomethyl)mesitylene and ethynyl-thiophene to develop TC-Thio, a bioactive C3 -symmetric ligand in which three thiophene-triazole moieties are positioned around a central mesitylene core. The ligand was characterised by X-ray crystallography and forms multinuclear CuII and CuI complexes identified by mass spectrometry and rationalised by density functional theory (DFT). Upon Cu coordination, CuII -TC-Thio becomes a potent DNA binding and cleaving agent. Mechanistic studies reveal DNA recognition occurs exclusively at the minor groove with subsequent oxidative damage promoted through a superoxide- and peroxide-dependent pathway. Single molecule imaging of DNA isolated from peripheral blood mononuclear cells shows that the complex has comparable activity to the clinical drug temozolomide, causing DNA damage that is recognised by a combination of base excision repair (BER) enzymes.
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Affiliation(s)
- Alex Gibney
- SSPC, the, Science Foundation Ireland Research Centre for Pharmaceuticals, School of Chemical Sciences, Dublin City University, Glasnevin, Dublin 9, Dublin, Ireland
| | - Raphael E F de Paiva
- SSPC, the, Science Foundation Ireland Research Centre for Pharmaceuticals, School of Chemical Sciences, Dublin City University, Glasnevin, Dublin 9, Dublin, Ireland
| | - Vandana Singh
- Department of Life Sciences, Chalmers University of Technology, Gothenburg, Sweden
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Robert Fox
- SSPC, the, Science Foundation Ireland Research Centre for Pharmaceuticals, School of Chemical Sciences, Dublin City University, Glasnevin, Dublin 9, Dublin, Ireland
| | - Damien Thompson
- SSPC, the, Science Foundation Ireland Research Centre for Pharmaceuticals, Department of Physics, University of Limerick, Ireland
| | - Joseph Hennessy
- SSPC, the, Science Foundation Ireland Research Centre for Pharmaceuticals, School of Chemical Sciences, Dublin City University, Glasnevin, Dublin 9, Dublin, Ireland
| | - Creina Slator
- SSPC, the, Science Foundation Ireland Research Centre for Pharmaceuticals, School of Chemical Sciences, Dublin City University, Glasnevin, Dublin 9, Dublin, Ireland
| | - Christine J McKenzie
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, 5230, Odense M, Denmark
| | - Pegah Johansson
- Laboratory of Clinical Chemistry, Sahlgrenska University Hospital Gothenburg, Sweden
- Department of Laboratory Medicine, Institute of Biomedicine, Sahlgrenska Academy at University of Gothenburg, Sweden
| | - Vickie McKee
- SSPC, the, Science Foundation Ireland Research Centre for Pharmaceuticals, School of Chemical Sciences, Dublin City University, Glasnevin, Dublin 9, Dublin, Ireland
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, 5230, Odense M, Denmark
| | - Fredrik Westerlund
- Department of Life Sciences, Chalmers University of Technology, Gothenburg, Sweden
| | - Andrew Kellett
- SSPC, the, Science Foundation Ireland Research Centre for Pharmaceuticals, School of Chemical Sciences, Dublin City University, Glasnevin, Dublin 9, Dublin, Ireland
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de Souza ÍP, de Melo ACC, Rodrigues BL, Bortoluzzi A, Poole S, Molphy Z, McKee V, Kellett A, Fazzi RB, da Costa Ferreira AM, Pereira-Maia EC. Antitumor copper(II) complexes with hydroxyanthraquinones and N,N-heterocyclic ligands. J Inorg Biochem 2023; 241:112121. [PMID: 36696836 DOI: 10.1016/j.jinorgbio.2023.112121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 12/28/2022] [Accepted: 01/02/2023] [Indexed: 01/06/2023]
Abstract
Five ternary copper(II) complexes, [Cu2(phen)2(L1)(ClO4)2] (1), [Cu2(phen)2(L1)(DMSO)2](PF6)2 (2), [Cu2(bpy)2(L1)(ClO4)2(H2O)2] (3), [Cu2(dmp)2(L1)(ClO4)2(H2O)2] (4), and [Cu(phen)(L2)]2(ClO4)2 (5), in which phen = 1,10-phenanthroline, bpy = 2,2'-bipyridine, dmp = 2,9-dimethyl-1,10-phenanthroline, H2L1 = 1,4-dihydroxyanthracene-9,10-dione and HL2 = 1-hydroxyanthracene-9,10-dione, DMSO = dimethylsulfoxide, were synthesized and fully characterized. Complex 2 was obtained through the substitution of perchlorate for DMSO. When two hydroxyquinone groups are present, L1 makes a bridge between two Cu(II) ions, which also bind two nitrogens of the respective diimine ligand. The compounds bind to calf thymus DNA and oxidatively cleave pUC19 DNA according to the following order of activity 1 > 4-5 > 3. Furthermore, complexes 1, 3, 4 and 5 inhibit topoisomerase-I activity and the growth of myelogenous leukemia cells with the IC50 values of 1.13, 10.60, 0.078, and 1.84 μmol L-1, respectively. Complexes 1 and 4 are the most active in cancer cells and in DNA cleavage.
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Affiliation(s)
- Ívina P de Souza
- Departamento de Química, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, 31270-901 Belo Horizonte, MG, Brazil; Departamento de Química, Centro Federal de Educação Tecnológica de Minas Gerais, Avenida Amazonas, 5253, 30421-169 Belo Horizonte, MG, Brazil
| | - Ariane C C de Melo
- Departamento de Química, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, 31270-901 Belo Horizonte, MG, Brazil
| | - Bernardo L Rodrigues
- Departamento de Química, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, 31270-901 Belo Horizonte, MG, Brazil
| | - Adailton Bortoluzzi
- Laboratório de Bioinorgânica e Cristalografia, Universidade Federal de Santa Catarina, Florianópolis, SC 88040-900, Brazil
| | - Simon Poole
- SSPC, the SFI Research Centre for Pharmaceuticals, School of Chemical Science, Dublin City University, Dublin 9, Ireland
| | - Zara Molphy
- SSPC, the SFI Research Centre for Pharmaceuticals, School of Chemical Science, Dublin City University, Dublin 9, Ireland
| | - Vickie McKee
- SSPC, the SFI Research Centre for Pharmaceuticals, School of Chemical Science, Dublin City University, Dublin 9, Ireland; Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark
| | - Andrew Kellett
- SSPC, the SFI Research Centre for Pharmaceuticals, School of Chemical Science, Dublin City University, Dublin 9, Ireland
| | - Rodrigo B Fazzi
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, Avenida Prof. Lineu Prestes, 748, 05508-000 São Paulo, SP, Brazil
| | - Ana M da Costa Ferreira
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, Avenida Prof. Lineu Prestes, 748, 05508-000 São Paulo, SP, Brazil
| | - Elene C Pereira-Maia
- Departamento de Química, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627, 31270-901 Belo Horizonte, MG, Brazil.
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Arellano Reyes RA, Prabhakaran A, Sia RCE, Guthmuller J, Ja KK, Yang T, Dietzek-Ivanšić B, McKee V, Keyes TE. BODIPY-perylene Charge Transfer Compounds: Sensitizers for triplet-triplet annihilation up-conversion. Chemistry 2023; 29:e202300239. [PMID: 36802283 DOI: 10.1002/chem.202300239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Revised: 02/20/2023] [Accepted: 02/21/2023] [Indexed: 02/23/2023]
Abstract
BODIPY heterochromophores asymmetrically substituted with perylene and/or iodine at the 2 and 6 positions were prepared and investigated as sensitizers for triplet-triplet annihilation up conversion (TTA-UC). Single-crystal X-ray crystallographic analyses show that the torsion angle between BODIPY and perylene units lie between 73.54 and 74.51, but they are not orthogonal. Both compounds show intense, charge transfer absorption and emission profiles, confirmed by resonance Raman spectroscopy and consistent with DFT calculations. The emission quantum yield was solvent dependent but emission profile remained characteristic of CT transition across all solvents explored. Both BODIPY derivatives were found to be effective sensitizers of TTA-UC with perylene annihilator in dioxane and DMSO. Intense anti-Stokes emission was observed, and visible by eye from these solvents. Conversely, no TTA-UC was observed from the other solvents explored, including from non-polar solvents such as toluene and hexane that yielded brightest fluorescence from the BODIPY derivatives. In dioxane, the power density plots obtained were strongly consistent with TTA-UC and the power density threshold, the Ith value ( the photon flux at which 50% of ΦTTAUC is achieved), for B2PI was observed to be 2.5x lower than of B2P under optimal conditions, an effect ascribed to the combined influence of spin-orbit charge transfer intersystem crossing (SOCT-ISC) and heavy metal on the triplet state formation for B2PI.
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Affiliation(s)
| | - Amrutha Prabhakaran
- Dublin City University Faculty of Science and Health, School of Chemical Sciences, IRELAND
| | - Rengel Cane E Sia
- Gdansk University: Uniwersytet Gdanski, Faculty of Applied Physics and Mathematics, POLAND
| | - Julien Guthmuller
- Gdansk University: Uniwersytet Gdanski, Faculty of Applied Physics and Mathematics, POLAND
| | - Keshav Kumar Ja
- IPHT: Leibniz-Institut fur Photonische Technologien, Department Functional Interfaces, GERMANY
| | - Tingxiang Yang
- Leibniz-Institut für Photonische Technologien eV: Leibniz-Institut fur Photonische Technologien eV, Forschungsabteilung Functional Interfaces, GERMANY
| | | | - Vickie McKee
- Dublin City University, School of Chemical Sciences, IRELAND
| | - Tia E Keyes
- Dublin City Universtiy, School of Chemical Sciences, -, 9, Dublin, IRELAND
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Batool M, Gill R, Munawar K, McKee V, Mazhar M. Single source precursor derived ZnO–PbO composite thin films for enhanced photocatalytic activity. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2021.122642] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Chen C, Sommer C, Thisgaard H, McKee V, McKenzie CJ. Facile transmetallation of [SbIII(DOTA)]− renders it unsuitable for medical applications. RSC Adv 2022; 12:5772-5781. [PMID: 35424558 PMCID: PMC8981601 DOI: 10.1039/d2ra00642a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Accepted: 02/04/2022] [Indexed: 12/03/2022] Open
Abstract
The antimony(iii) complex of 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetate (DOTA) has been prepared and its exceptionally low stability observed. The Sb(iii) ion in Na[Sb(DOTA)]·4H2O shows an approximately square antiprismatic coordination geometry that is close to superimposable to the Bi(iii) geometry in [Bi(DOTA)]− in two phases containing this anion, Na[Bi(DOTA)]·4H2O, [H3O][Bi(DOTA)]·H2O for which structures are also described. Interestingly, DOTA itself in [(H6DOTA)]Cl2·4H2O·DMSO shows the same orientation of the N4O4 metal binding cavity reflecting the limited flexibility of DOTA in an octadentate coordination mode. In 8-coordinate complexes it can however accommodate M(iii) ions with rion spanning a relatively wide range from 87 pm (Sc(iii)) to 117 pm (Bi(iii)). The larger Bi3+ ion appears to be the best metal–ligand size match since [Bi(DOTA)]− is associated with greater complex stability. In the solution state, [Sb(DOTA)]− is extremely susceptible to transmetallation by trivalent ions (Sc(iii), Y(iii), Bi(iii)) and, significantly, even by biologically important divalent metal ions (Mg(ii), Ca(ii), Zn(ii)). In all cases just one equivalent is enough to displace most of the Sb(iii). [Sb(DOTA)]− is resistant to hydrolysis; however, since biologically more abundant metal ions easily substitute the antimony, DOTA complexes will not be suitable for deployment for the delivery of the, so far unexploited, theranostic isotope pair 119Sb and 117Sb. The antimony(iii) complex of 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetate (DOTA) has been prepared and its exceptionally low stability observed.![]()
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Affiliation(s)
- Catherine Chen
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark
| | - Charlotte Sommer
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark
| | - Helge Thisgaard
- Department of Nuclear Medicine, Odense University Hospital, Odense, Denmark
- Department of Clinical Research, University of Southern Denmark, Odense, Denmark
| | - Vickie McKee
- School of Chemical Sciences, Dublin City University, Glasnevin, Dublin 9, Ireland
| | - Christine J. McKenzie
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark
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Deville C, Jeppesen HS, McKee V, Lock N. Anion and solvent controlled growth of crystalline and amorphous zinc(ii) coordination polymers and a molecular complex. Dalton Trans 2021; 50:3979-3989. [PMID: 33646221 DOI: 10.1039/d0dt04190d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Controlled bottom-up synthesis of amorphous coordination polymers with tailored metal coordination is a research field in its infancy. In this study, synthesis control was achieved to selectively prepare one-dimensional (1D) crystalline and amorphous zinc(ii)-based coordination polymers and a dimeric molecular compound, all with similar coordination geometry as evidenced by X-ray diffraction and total scattering studies. The compounds were obtained by bottom up self-assembly of Zn(ii) with terephthalate (tph2-) as linker and the enantiopure chelating ligand S-(1,2)-bis(1H-benzimidazol-2-yl)ethanol (L). The solvent and the coordination ability of the precursor zinc salt anion control the crystalline products formed by slow diffusion at room temperature: perchlorate allows isolation of the phase pure crystalline 1D polymer {[Zn(tph)(L)]·H2O·3DMF}n (1·H2O·3DMF, DMF = N,N-dimethylformamide). In contrast, zinc chloride leads to the formation of either a mixture of polymeric 1·H2O·3DMF and a dimeric molecular species [Zn2Cl2(tph)(L)2]·4DMF (2·4DMF), or to the phase pure dimer 2·4DMF, depending on the Zn(ii) : tphH2 stoichiometry. A modified synthesis using zinc nitrate and fast precipitation by base addition results in an amorphous analogue of the 1D polymer (3). Chains of 1·H2O·3DMF pack into a non-porous crystalline material with a surface area of just 6 m2 g-1, while the outer surface area of amorphous polymer 3 is a factor of eight larger. Hence, the amorphous compound provides larger metal site accessibility for potential surface chemical reactions, while maintaining the coordination geometry of the metal sites. The temperature response of crystalline polymer 1·H2O·3DMF was studied using multi-temperature single crystal X-ray diffraction (100-300 K). The a = b axes display normal positive thermal expansion, while the c axis remains constant with increasing temperature due to partial relaxation of the terephthalate linkers and slightly changed geometry within the individual polymer chains.
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Affiliation(s)
- Claire Deville
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, DK-8000 Aarhus C, Denmark
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McKee V, Kose M. Manganese(II) complexes derived from acyclic ligands having flexible alcohol arms: structural chracterization and SOD and catalase mimetic studies. Acta Crystallogr C 2021; 77:100-110. [DOI: 10.1107/s2053229621000395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Accepted: 01/11/2021] [Indexed: 11/10/2022] Open
Abstract
In this work, a series of seven MnII complexes of noncyclic flexible ligands derived from 2,6-diformylpyridine and ethanolamine or alkyl-substituted ethanolamines were prepared and characterized, six structurally by single-crystal X-ray diffraction studies. The complexes are dichlorido{2,2′-[(pyridine-2,6-diyl)bis(nitrilomethanylylidene)]diethanol}manganese(II), [MnCl2(C11H15N3O2)] or [MnCl2(L1)], (2), bis{μ-2,2′-[(pyridine-2,6-diyl)bis(nitrilomethanylylidene)]diethanol}bis[dithiocyanatomanganese(II)], [Mn2(NCS)4(C11H15N3O2)2] or [Mn2(NCS)4(L1)2], (3), chlorido{1,1′-[(pyridine-2,6-diyl)bis(nitrilomethanylylidene)]bis(propan-2-ol)}manganese(II) chloride monohydrate, [MnCl(C13H19N3O2)(H2O)]Cl·H2O or [MnCl(L2)(H2O)]Cl·H2O, (4), {1,1′-[(pyridine-2,6-diyl)bis(nitrilomethanylylidene)]bis(propan-2-ol)}dithiocyanatomanganese(II), [Mn(NCS)2(C13H19N3O2)] or [Mn(NCS)2(L2)], (5), aquadichlorido{2,2′-dimethyl-2,2′-[(pyridine-2,6-diyl)bis(nitrilomethanylylidene)]bis(propan-1-ol)}manganese(II) 0.3-hydrate, [MnCl2(C15H23N3O2)(H2O)]·0.3H2O or [MnCl2(L3)(H2O)]·0.3H2O, (6), (dimethylformamide){2,2′-dimethyl-2,2′-[(pyridine-2,6-diyl)bis(nitrilomethanylylidene)]bis(propan-1-ol)}dithiocyanatomanganese(II), [Mn(NCS)2(C15H23N3O2)(C3H7NO)] or [Mn(NCS)2(L3)(DMF)], (7), and (dimethylformamide){2,2′-[(pyridine-2,6-diyl)bis(nitrilomethanylylidene)]bis(butan-1-ol)}dithiocyanatomanganese(II) dimethylformamide monosolvate, [Mn(NCS)2(C15H23N3O2)(C3H7NO)]·C3H7NO or [Mn(NCS)2(L4)(DMF)]·DMF, (8). The crystal structure of ligand L1 is also reported, but that of (5) is not. All four ligands (L1–L4) have five potential donor atoms in an N3O2 donor set, i.e. three N (pyridine/diimine donors) and two alcohol O atoms, to coordinate the MnII centre. The N3O2 donor set coordinates to the metal centre in a pentagonal planar arrangement; seven-coordinated MnII complexes were obtained via coordination of two auxiliary ligands (anions or water molecules) at the axial positions. However, in some cases, the alcohol O-atom donors remain uncoordinated, resulting in five- or six-coordinated MnII complexes. The structurally characterized complexes were tested for their catalytic scavenging of superoxide and peroxide. The results indicated that the complexes with coordinated exogenous water or chloride ligands showed higher SOD activity than those with exogenous thiocyanate ligands.
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Fantoni NZ, Molphy Z, O'Carroll S, Menounou G, Mitrikas G, Krokidis MG, Chatgilialoglu C, Colleran J, Banasiak A, Clynes M, Roche S, Kelly S, McKee V, Kellett A. Cover Feature: Polypyridyl‐Based Copper Phenanthrene Complexes: Combining Stability with Enhanced DNA Recognition (Chem. Eur. J. 3/2021). Chemistry 2021. [DOI: 10.1002/chem.202003314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Nicoló Zuin Fantoni
- School of Chemical Sciences and National Institute for Cellular, Biotechnology Dublin City University Glasnevin, Dublin 9 Ireland
- Nicolò Zuin Fantoni—Chemistry Research Laboratory University of Oxford 12 Mansfield Road Oxford OX1 3TA UK
| | - Zara Molphy
- School of Chemical Sciences and National Institute for Cellular, Biotechnology Dublin City University Glasnevin, Dublin 9 Ireland
- SSPC, the SFI Research Centre for Pharmaceuticals School of Chemical Sciences Dublin City University Dublin 9 Ireland
| | - Sinéad O'Carroll
- School of Chemical Sciences and National Institute for Cellular, Biotechnology Dublin City University Glasnevin, Dublin 9 Ireland
| | - Georgia Menounou
- Consiglio Nazionale delle Ricerche ISOF Via P. Gobetti 101 40129 Bologna Italy
| | - George Mitrikas
- Institute of Nanoscience and Nanotechnology Demokritos NCSR “Demokritos” Agia Paraskevi Attikis, 153 10 Athens Greece
| | - Marios G. Krokidis
- Institute of Nanoscience and Nanotechnology Demokritos NCSR “Demokritos” Agia Paraskevi Attikis, 153 10 Athens Greece
| | | | - John Colleran
- School of Chemical and Pharmaceutical Sciences TU Dublin Kevin Street Dublin 8 Ireland
- Applied Electrochemistry Group Focas Research Institute TU Dublin Camden Row Dublin 8 Ireland
| | - Anna Banasiak
- Applied Electrochemistry Group Focas Research Institute TU Dublin Camden Row Dublin 8 Ireland
| | - Martin Clynes
- National Institute for Cellular Biotechnology Dublin City University Dublin 9 Ireland
| | - Sandra Roche
- National Institute for Cellular Biotechnology Dublin City University Dublin 9 Ireland
| | - Suainibhe Kelly
- National Institute for Cellular Biotechnology Dublin City University Dublin 9 Ireland
| | - Vickie McKee
- School of Chemical Sciences and National Institute for Cellular, Biotechnology Dublin City University Glasnevin, Dublin 9 Ireland
- Department of Physics, Chemistry and Pharmacy University of Southern Denmark Campusvej 55 5230 Odense M Denmark
| | - Andrew Kellett
- School of Chemical Sciences and National Institute for Cellular, Biotechnology Dublin City University Glasnevin, Dublin 9 Ireland
- SSPC, the SFI Research Centre for Pharmaceuticals School of Chemical Sciences Dublin City University Dublin 9 Ireland
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Hansen LS, Jakobsen VB, McKee V, McKenzie CJ. Cover Feature: Acetylacetonate and Acetate Complexes of Nickel(II) Catalyse the Air Oxidation of Phosphines (Eur. J. Inorg. Chem. 44/2020). Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Line Sofie Hansen
- Department of Physics, Chemistry and Pharmacy University of Southern Denmark Campusvej 55 5230 Odense M Denmark
| | - Vibe Boel Jakobsen
- Department of Physics, Chemistry and Pharmacy University of Southern Denmark Campusvej 55 5230 Odense M Denmark
| | - Vickie McKee
- Department of Physics, Chemistry and Pharmacy University of Southern Denmark Campusvej 55 5230 Odense M Denmark
| | - Christine J. McKenzie
- Department of Physics, Chemistry and Pharmacy University of Southern Denmark Campusvej 55 5230 Odense M Denmark
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Hansen LS, Jakobsen VB, McKee V, McKenzie CJ. Acetylacetonate and Acetate Complexes of Nickel(II) Catalyse the Air Oxidation of Phosphines. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Line Sofie Hansen
- Department of Physics, Chemistry and Pharmacy University of Southern Denmark Campusvej 55 5230 Odense M Denmark
| | - Vibe Boel Jakobsen
- Department of Physics, Chemistry and Pharmacy University of Southern Denmark Campusvej 55 5230 Odense M Denmark
| | - Vickie McKee
- Department of Physics, Chemistry and Pharmacy University of Southern Denmark Campusvej 55 5230 Odense M Denmark
| | - Christine J. McKenzie
- Department of Physics, Chemistry and Pharmacy University of Southern Denmark Campusvej 55 5230 Odense M Denmark
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Lauria T, Slator C, McKee V, Müller M, Stazzoni S, Crisp AL, Carell T, Kellett A. A Click Chemistry Approach to Developing Molecularly Targeted DNA Scissors. Chemistry 2020; 26:16782-16792. [PMID: 32706904 DOI: 10.1002/chem.202002860] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2020] [Revised: 07/23/2020] [Indexed: 12/21/2022]
Abstract
Nucleic acid click chemistry was used to prepare a family of chemically modified triplex forming oligonucleotides (TFOs) for application as a new gene-targeted technology. Azide-bearing phenanthrene ligands-designed to promote triplex stability and copper binding-were 'clicked' to alkyne-modified parallel TFOs. Using this approach, a library of TFO hybrids was prepared and shown to effectively target purine-rich genetic elements in vitro. Several of the hybrids provide significant stabilisation toward melting in parallel triplexes (>20 °C) and DNA damage can be triggered upon copper binding in the presence of added reductant. Therefore, the TFO and 'clicked' ligands work synergistically to provide sequence-selectivity to the copper cutting unit which, in turn, confers high stabilisation to the DNA triplex. To extend the boundaries of this hybrid system further, a click chemistry-based di-copper binding ligand was developed to accommodate designer ancillary ligands such as DPQ and DPPZ. When this ligand was inserted into a TFO, a dramatic improvement in targeted oxidative cleavage is afforded.
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Affiliation(s)
- Teresa Lauria
- School of Chemical Sciences and National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin, 9, Ireland
| | - Creina Slator
- School of Chemical Sciences and National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin, 9, Ireland
| | - Vickie McKee
- School of Chemical Sciences and National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin, 9, Ireland.,Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, 5230, Odense M, Denmark
| | - Markus Müller
- Department of Chemistry, Ludwig-Maximilians-Universität, Butenandtstrasse 5-13, 81377, Munich, Germany
| | - Samuele Stazzoni
- Department of Chemistry, Ludwig-Maximilians-Universität, Butenandtstrasse 5-13, 81377, Munich, Germany
| | - Antony L Crisp
- Department of Chemistry, Ludwig-Maximilians-Universität, Butenandtstrasse 5-13, 81377, Munich, Germany
| | - Thomas Carell
- Department of Chemistry, Ludwig-Maximilians-Universität, Butenandtstrasse 5-13, 81377, Munich, Germany
| | - Andrew Kellett
- School of Chemical Sciences and National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin, 9, Ireland.,CÚRAM, Centre for Research in Medical Devices, Dublin City University, Glasnevin, Dublin, 9, Ireland
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12
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Fantoni NZ, Molphy Z, O'Carroll S, Menounou G, Mitrikas G, Krokidis MG, Chatgilialoglu C, Colleran J, Banasiak A, Clynes M, Roche S, Kelly S, McKee V, Kellett A. Polypyridyl-Based Copper Phenanthrene Complexes: Combining Stability with Enhanced DNA Recognition. Chemistry 2020; 27:971-983. [PMID: 32519773 DOI: 10.1002/chem.202001996] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 06/09/2020] [Indexed: 02/06/2023]
Abstract
We report a series of copper(II) artificial metallo-nucleases (AMNs) and demonstrate their DNA damaging properties and in-vitro cytotoxicity against human-derived pancreatic cancer cells. The compounds combine a tris-chelating polypyridyl ligand, di-(2-pycolyl)amine (DPA), and a DNA intercalating phenanthrene unit. Their general formula is Cu-DPA-N,N' (where N,N'=1,10-phenanthroline (Phen), dipyridoquinoxaline (DPQ) or dipyridophenazine (DPPZ)). Characterisation was achieved by X-ray crystallography and continuous-wave EPR (cw-EPR), hyperfine sublevel correlation (HYSCORE) and Davies electron-nuclear double resonance (ENDOR) spectroscopies. The presence of the DPA ligand enhances solution stability and facilitates enhanced DNA recognition with apparent binding constants (Kapp ) rising from 105 to 107 m-1 with increasing extent of planar phenanthrene. Cu-DPA-DPPZ, the complex with greatest DNA binding and intercalation effects, recognises the minor groove of guanine-cytosine (G-C) rich sequences. Oxidative DNA damage also occurs in the minor groove and can be inhibited by superoxide and hydroxyl radical trapping agents. The complexes, particularly Cu-DPA-DPPZ, display promising anticancer activity against human pancreatic tumour cells with in-vitro results surpassing the clinical platinum(II) drug oxaliplatin.
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Affiliation(s)
- Nicoló Zuin Fantoni
- School of Chemical Sciences and National Institute for Cellular, Biotechnology, Dublin City University, Glasnevin, Dublin, 9, Ireland.,Nicolò Zuin Fantoni-Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, UK
| | - Zara Molphy
- School of Chemical Sciences and National Institute for Cellular, Biotechnology, Dublin City University, Glasnevin, Dublin, 9, Ireland.,SSPC, the SFI Research Centre for Pharmaceuticals, School of Chemical Sciences, Dublin City University, Dublin, 9, Ireland
| | - Sinéad O'Carroll
- School of Chemical Sciences and National Institute for Cellular, Biotechnology, Dublin City University, Glasnevin, Dublin, 9, Ireland
| | - Georgia Menounou
- Consiglio Nazionale delle Ricerche, ISOF, Via P. Gobetti 101, 40129, Bologna, Italy
| | - George Mitrikas
- Institute of Nanoscience and Nanotechnology Demokritos, NCSR "Demokritos", Agia Paraskevi Attikis, 153, 10, Athens, Greece
| | - Marios G Krokidis
- Institute of Nanoscience and Nanotechnology Demokritos, NCSR "Demokritos", Agia Paraskevi Attikis, 153, 10, Athens, Greece
| | | | - John Colleran
- School of Chemical and Pharmaceutical Sciences, TU Dublin, Kevin Street, Dublin 8, Ireland.,Applied Electrochemistry Group, Focas Research Institute, TU Dublin, Camden Row, Dublin 8, Ireland
| | - Anna Banasiak
- Applied Electrochemistry Group, Focas Research Institute, TU Dublin, Camden Row, Dublin 8, Ireland
| | - Martin Clynes
- National Institute for Cellular Biotechnology, Dublin City University, Dublin, 9, Ireland
| | - Sandra Roche
- National Institute for Cellular Biotechnology, Dublin City University, Dublin, 9, Ireland
| | - Suainibhe Kelly
- National Institute for Cellular Biotechnology, Dublin City University, Dublin, 9, Ireland
| | - Vickie McKee
- School of Chemical Sciences and National Institute for Cellular, Biotechnology, Dublin City University, Glasnevin, Dublin, 9, Ireland.,Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, 5230, Odense M, Denmark
| | - Andrew Kellett
- School of Chemical Sciences and National Institute for Cellular, Biotechnology, Dublin City University, Glasnevin, Dublin, 9, Ireland.,SSPC, the SFI Research Centre for Pharmaceuticals, School of Chemical Sciences, Dublin City University, Dublin, 9, Ireland
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13
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Munawar K, Mansoor MA, McKee V, Zaharinie T, Mohd Zubir MN, Aspanut Z, Yusof FB, Mazhar M. Optical and photocatalytic properties of biomimetic cauliflowered Ca2Mn3O8–CaO composite thin films. J SOLID STATE CHEM 2020. [DOI: 10.1016/j.jssc.2020.121552] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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14
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Zuin Fantoni N, McGorman B, Molphy Z, Singleton D, Walsh S, El-Sagheer AH, McKee V, Brown T, Kellett A. Development of Gene-Targeted Polypyridyl Triplex-Forming Oligonucleotide Hybrids. Chembiochem 2020; 21:3563-3574. [PMID: 32755000 DOI: 10.1002/cbic.202000408] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 07/30/2020] [Indexed: 02/02/2023]
Abstract
In the field of nucleic acid therapy there is major interest in the development of libraries of DNA-reactive small molecules which are tethered to vectors that recognize and bind specific genes. This approach mimics enzymatic gene editors, such as ZFNs, TALENs and CRISPR-Cas, but overcomes the limitations imposed by the delivery of a large protein endonuclease which is required for DNA cleavage. Here, we introduce a chemistry-based DNA-cleavage system comprising an artificial metallo-nuclease (AMN) that oxidatively cuts DNA, and a triplex-forming oligonucleotide (TFO) that sequence-specifically recognises duplex DNA. The AMN-TFO hybrids coordinate CuII ions to form chimeric catalytic complexes that are programmable - based on the TFO sequence employed - to bind and cut specific DNA sequences. Use of the alkyne-azide cycloaddition click reaction allows scalable and high-throughput generation of hybrid libraries that can be tuned for specific reactivity and gene-of-interest knockout. As a first approach, we demonstrate targeted cleavage of purine-rich sequences, optimisation of the hybrid system to enhance stability, and discrimination between target and off-target sequences. Our results highlight the potential of this approach where the cutting unit, which mimics the endonuclease cleavage machinery, is directly bound to a TFO guide by click chemistry.
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Affiliation(s)
- Nicolò Zuin Fantoni
- School of Chemical Sciences and National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland.,Present address: Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, UK
| | - Bríonna McGorman
- School of Chemical Sciences and National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland
| | - Zara Molphy
- School of Chemical Sciences and National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland.,Synthesis and Solid-State Pharmaceutical Centre, School of Chemical Sciences, Dublin City University, Dublin 9, Ireland
| | - Daniel Singleton
- ATDBio Ltd., School of Chemistry, University of Southampton, Southampton, SO17 1BJ, UK
| | - Sarah Walsh
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, UK.,ATDBio Ltd., Magdalen Centre, Oxford Science Park, Oxford, OX4 4GA, UK
| | - Afaf H El-Sagheer
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, UK.,Chemistry Branch, Department of Science and Mathematics, Faculty of Petroleum and Mining Engineering, Suez University, Suez, 43721, Egypt
| | - Vickie McKee
- School of Chemical Sciences and National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland.,Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, 5230, Odense M, Denmark
| | - Tom Brown
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, UK
| | - Andrew Kellett
- School of Chemical Sciences and National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland.,Synthesis and Solid-State Pharmaceutical Centre, School of Chemical Sciences, Dublin City University, Dublin 9, Ireland
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15
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Deville C, Folkjær M, Reinholdt P, Hvid MS, Lamagni P, Borup K, Sun Z, Lauritsen JV, McKee V, Jensen KMØ, Lock N. Cubes on a string: a series of linear coordination polymers with cubane-like nodes and dicarboxylate linkers. Nanoscale 2020; 12:11601-11611. [PMID: 32432631 DOI: 10.1039/d0nr01503b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A series of semicrystalline and amorphous one-dimensional (1D) polymeric chains consisting of cubane-like CoII4L4 units (L = S-1,2-bis(benzimidazol-2-yl)ethanol) and dicarboxylates were synthesized and characterized by single crystal diffraction and X-ray total scattering. The polycationic chains are composed of [Co4L4(dicarboxylate)]2+ monomeric units, while one molecular dicarboxylate counterion is balancing the charge of each monomer. The linear compound series has five members, and the crystal structures were solved for [Co4L4(tph)](tph) and [Co4L4(ndc)](ndc), where tph = terephthalate and ndc = 2,6-naphthalenedicarboxylate. Partly crystalline compounds were produced by slow assembly at elevated temperature (over days), while the amorphous compounds were formed by fast precipitation (within minutes). Pair distribution function (PDF) analysis based on X-ray total scattering data reveals the presence of the cubane-like entity in both the amorphous and semicrystalline samples. While the powders are non-porous, precipitation is a fast and versatile method to produce compounds with cubane-like centres with moderate surface areas of 17-49 m2 g-1 allowing for surface chemical reactions. The powders have a high concentration of Lewis base sites as verified by their selective adsorption of CO2 over N2. The use of an amorphous cubane-like polymer for the electrocatalytic oxygen evolution reaction was demonstrated.
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Affiliation(s)
- Claire Deville
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, DK-8000 Aarhus C, Denmark
| | - Mads Folkjær
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, DK-8000 Aarhus C, Denmark
| | - Peter Reinholdt
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, DK-5230 Odense M, Denmark
| | - Mathias S Hvid
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, DK-8000 Aarhus C, Denmark
| | - Paolo Lamagni
- Carbon Dioxide Activation Center (CADIAC), Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, DK-8000 Aarhus C, Denmark
| | - Kasper Borup
- Center for Materials Crystallography, Department of Chemistry and iNANO, Aarhus University, Langelandsgade 140, DK-8000 Aarhus C, Denmark
| | - Zhaozong Sun
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, DK-8000 Aarhus C, Denmark
| | - Jeppe Vang Lauritsen
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, DK-8000 Aarhus C, Denmark
| | - Vickie McKee
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, DK-5230 Odense M, Denmark
| | - Kirsten M Ø Jensen
- Department of Chemistry and Nanoscience Center, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
| | - Nina Lock
- Carbon Dioxide Activation Center (CADIAC), Interdisciplinary Nanoscience Center (iNANO) and Dept. of Chemistry, Aarhus University, Gustav Wieds Vej 14, DK-8000 Aarhus C, Denmark.
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16
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Nielsen MØ, Lund PB, McKee V, Ravnsbæk D, Warner T, Wegeberg C. On the synthesis and structure of the copper-molybdenum oxide bronzes: Monoclinic Cu2Mo10O30 and orthorhombic CuMo9O26. J SOLID STATE CHEM 2020. [DOI: 10.1016/j.jssc.2020.121259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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17
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Andersen ABA, Pyykkönen A, Jensen HJA, McKee V, Vaara J, Nielsen UG. Remarkable reversal of 13C-NMR assignment in d 1, d 2 compared to d 8, d 9 acetylacetonate complexes: analysis and explanation based on solid-state MAS NMR and computations. Phys Chem Chem Phys 2020; 22:8048-8059. [PMID: 32239061 DOI: 10.1039/d0cp00980f] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
13C solid-state MAS NMR spectra of a series of paramagnetic metal acetylacetonate complexes; [VO(acac)2] (d1, S = ½), [V(acac)3] (d2, S = 1), [Ni(acac)2(H2O)2] (d8, S = 1), and [Cu(acac)2] (d9, S = ½), were assigned using modern NMR shielding calculations. This provided a reliable assignment of the chemical shifts and a qualitative insight into the hyperfine couplings. Our results show a reversal of the isotropic 13C shifts, δiso(13C), for CH3 and CO between the d1 and d2versus the d8 and d9 acetylacetonate complexes. The CH3 shifts change from about -150 ppm (d1,2) to roughly 1000 ppm (d8,9), whereas the CO shifts decrease from 800 ppm to about 150 ppm for d1,2 and d8,9, respectively. This was rationalized by comparison of total spin-density plots and computed contact couplings to those corresponding to singly occupied molecular orbitals (SOMOs). This revealed the interplay between spin delocalization of the SOMOs and spin polarization of the lower-energy MOs, influenced by both the molecular symmetry and the d-electron configuration. A large positive chemical shift results from spin delocalization and spin polarization acting in the same direction, whereas their cancellation corresponds to a small shift. The SOMO(s) for the d8 and d9 complexes are σ-like, implying spin-delocalization on the CH3 and CO groups of the acac ligand, cancelled only for CO by spin polarization. In contrast, the SOMOs of the d1 and d2 systems are π-like and a large CO-shift results from spin polarization, which accounts for the reversed assignment of δiso(13C) for CH3 and CO.
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Affiliation(s)
- Anders B A Andersen
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, DK-5230 Odense, Denmark.
| | - Ari Pyykkönen
- NMR Research Unit, University of Oulu, FI-90014, Finland
| | - Hans Jørgen Aa Jensen
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, DK-5230 Odense, Denmark.
| | - Vickie McKee
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, DK-5230 Odense, Denmark. and School of Chemical Sciences, Dublin City University, Glasnevin, Dublin 9, Ireland
| | - Juha Vaara
- NMR Research Unit, University of Oulu, FI-90014, Finland
| | - Ulla Gro Nielsen
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, DK-5230 Odense, Denmark.
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18
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Sirajuddin M, Ali S, McKee V, Matin A. Synthesis, characterization and biological screenings of 5-coordinated Organotin(IV) complexes based on carboxylate ligand. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.127683] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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19
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Karaoğlu HP, Atsay A, Nar I, McKee V, Koçak MB, Hamuryudan E, Gül A. Near-infrared absorbing π-extended hexadeca substituted phthalocyanines. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.07.086] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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20
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Møller MS, Haag A, McKee V, McKenzie CJ. NO sorption, in-crystal nitrite and nitrate production with arylamine oxidation in gas-solid single crystal to single crystal reactions. Chem Commun (Camb) 2019; 55:10551-10554. [PMID: 31414677 DOI: 10.1039/c9cc05315h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A bridging nitrite and a nitrate counter anion per Co2 site are generated in-crystal and an arylamine group on the ligand scaffold is oxidised to a nitro group when nitric oxide (NO) is chemisorbed by molecular crystals of cobalt complexes.
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Affiliation(s)
- Mads Sondrup Møller
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark.
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21
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Mondal M, Panda M, McKee V, Kerrigan NJ. Asymmetric Synthesis of Tetrahydrofurans through Palladium(0)-Catalyzed [3 + 2]-Cycloaddition of Vinylcyclopropanes with Ketenes. J Org Chem 2019; 84:11983-11991. [DOI: 10.1021/acs.joc.9b01854] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Mukulesh Mondal
- Department of Chemistry, Oakland University, 2200 N. Squirrel Road, Rochester, Michigan 48309-4477, United States
| | - Manashi Panda
- Department of Chemistry, Oakland University, 2200 N. Squirrel Road, Rochester, Michigan 48309-4477, United States
| | - Vickie McKee
- School of Chemical Sciences, Dublin City University, Glasnevin, Dublin 9, Ireland
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark
| | - Nessan J. Kerrigan
- School of Chemical Sciences, Dublin City University, Glasnevin, Dublin 9, Ireland
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22
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Ahmed M, Devereux M, McKee V, McCann M, Rooney AD. ( E)-6,6'-(Diazene-1,2-di-yl)bis-(1,10-phenanthrolin-5-ol) tri-chloro-methane disolvate: a superconjugated ligand. Acta Crystallogr E Crystallogr Commun 2019; 75:1224-1227. [PMID: 31417796 PMCID: PMC6690457 DOI: 10.1107/s205698901900954x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Accepted: 07/02/2019] [Indexed: 12/04/2022]
Abstract
The preparation and structural characterization of the diazo-diphenanthroline compound, (E)-6,6′-(diazene-1,2-diyl)bis(1,10-phenanthrolin-5-ol) are described. The fully conjugated bis-phenanthroline molecule is expected to offer exciting new physical and chemical properties, and should form the basis of novel metal coordination complexes as a consequence of the dual N,N′-1,10-phenanthroline chelating moieties situated on the opposite ends of the molecule. Phenanthroline ligands are important metal-binding molecules which have been extensively researched for applications in both material science and medicinal chemistry. Azobenzene and its derivatives have received significant attention because of their ability to be reversibly switched between the E and Z forms and so could have applications in optical memory and logic devices or as molecular machines. Herein we report the formation and crystal structure of a highly unusual novel diazo-diphenanthroline compound, C24H14N6O2·2CHCl3.
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Affiliation(s)
- Muhib Ahmed
- Department of Chemistry, Maynooth University, Co. Kildare, Ireland
| | - Michael Devereux
- The Centre for Biomimetic & Therapeutic Research, Focas Research Institute, Technological University Dublin, City Campus, Camden Row, Dublin 8, Ireland
| | - Vickie McKee
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Canpusvej 55, 5230 Odense M, Denmark.,School of Chemical Sciences, Dublin City University, Glasnevin, Dublin 9, Ireland
| | - Malachy McCann
- Department of Chemistry, Maynooth University, Co. Kildare, Ireland
| | - A Denise Rooney
- Department of Chemistry, Maynooth University, Co. Kildare, Ireland
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23
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Slator C, Molphy Z, McKee V, Long C, Brown T, Kellett A. Di-copper metallodrugs promote NCI-60 chemotherapy via singlet oxygen and superoxide production with tandem TA/TA and AT/AT oligonucleotide discrimination. Nucleic Acids Res 2019; 46:2733-2750. [PMID: 29474633 PMCID: PMC5888725 DOI: 10.1093/nar/gky105] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Accepted: 02/08/2018] [Indexed: 12/29/2022] Open
Abstract
In order to expand the current repertoire of cancer treatments and to help circumvent limitations associated with resistance, the identification of new metallodrugs with high potency and novel mechanisms of action is of significant importance. Here we present a class of di-copper(II) complex based on the synthetic chemical nuclease [Cu(Phen)2]+ (where Phen = 1,10-phenanthroline) that is selective against solid epithelial cancer cells from the National Cancer Institute's 60 human cell line panel (NCI-60). Two metallodrug leads are studied and in each case two [Cu(Phen)2]+ units are bridged by a dicarboxylate linker but the length and rigidity of the linkers differ distinctly. Both agents catalyze intracellular superoxide (O2•-) and singlet oxygen (1O2) formation with radical species mediating oxidative damage within nuclear DNA in the form of double strand breaks and to the mitochondria in terms of membrane depolarization. The complexes are effective DNA binders and can discriminate AT/AT from TA/TA steps of duplex DNA through induction of distinctive Z-like DNA or by intercalative interactions.
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Affiliation(s)
- Creina Slator
- School of Chemical Sciences and National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland
| | - Zara Molphy
- School of Chemical Sciences and National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland
| | - Vickie McKee
- School of Chemical Sciences and National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland
| | - Conor Long
- School of Chemical Sciences and National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland
| | - Tom Brown
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Oxford OX1 3TA, UK
| | - Andrew Kellett
- School of Chemical Sciences and National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland
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24
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Mahmood K, Akhter Z, Asghar MA, Mirza B, Ismail H, Liaqat F, Kalsoom S, Ashraf AR, Shabbir M, Qayyum MA, McKee V. Synthesis, characterization and biological evaluation of novel benzimidazole derivatives. J Biomol Struct Dyn 2019; 38:1670-1682. [PMID: 31074356 DOI: 10.1080/07391102.2019.1617783] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
In search of achieving less toxic and more potent chemotherapeutics, three novel heterocyclic benzimidazole derivatives: 2-(1H-benzo[d]imidazol-2-yl)-4-chlorophenol (BM1), 4-chloro-2-(6-methyl-1H-benzo[d]imidazol-2-yl)phenol (BM2) and 4-chloro-2-(6-nitro-1H-benzo[d]imidazol-2-yl)phenol (BM3) with DNA-targeting properties, were synthesized and fully characterized by important physicochemical techniques. The DNA binding properties of the compounds were investigated by UV-Visible absorption titrations and thermal denaturation experiments. These molecules exhibited a good binding propensity to fish sperm DNA (FS-DNA), as evident from the high binding constants (Kb) values: 1.9 × 105, 1.39 × 105 and 1.8 × 104 M‒1 for BM1, BM2 and BM3, respectively. Thermal melting studies of DNA further validated the absorption titration results and best interaction was manifested by BM1 with ΔTm = 4.96 °C. The experimental DNA binding results were further validated theoretically by molecular docking study. It was confirmed that the molecules (BM1-BM3) bind to DNA via an intercalative and groove binding mode. The investigations showed a correlation between binding constants and energies obtained experimentally and through molecular docking, indicating a binding preference of benzimidazole derivatives with the minor groove of DNA. BM1 was the preferential candidate for DNA binding because of its flat structure, π-π interactions and less steric hindrance. To complement the DNA interaction, antimicrobial assays (antibacterial & antifungal) were performed. It was observed that compound BM2 showed promising activity against all bacterial strains (Micrococcus luteus, Staphylococcus aureus, Enterobacter aerogenes and Escherichia coli) and fungi (Aspergillus flavus, Aspergillus fumigatus and Fusarium solani), while rest of the compounds were active against selective strains. The MIC values of BM2 were found to be in the range of 12.5 ± 2.2-25 ± 1.5 µg/mL. Thus, the compound BM2 was found to be the effective DNA binding antimicrobial agent. Furthermore, the preliminary cytotoxic properties of synthesized compounds were evaluated by brine shrimps lethality assay to check their nontoxic nature towards healthy normal cells.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Khalid Mahmood
- Department of Chemistry, Quaid-i-Azam University, Islamabad, Pakistan
| | - Zareen Akhter
- Department of Chemistry, Quaid-i-Azam University, Islamabad, Pakistan
| | | | - Bushra Mirza
- Department of Biochemistry, Quaid-i-Azam University, Islamabad, Pakistan
| | - Hammad Ismail
- Department of Biochemistry, University of Gujrat, Gujrat, Pakistan
| | - Faroha Liaqat
- Department of Chemistry, Quaid-i-Azam University, Islamabad, Pakistan
| | - Saima Kalsoom
- Center for Interdisciplinary Research in Basic Sciences (CIRBS), International Islamic University, Islamabad, Pakistan
| | - Ahmad Raza Ashraf
- Department of Chemistry, Quaid-i-Azam University, Islamabad, Pakistan
| | - Muhammad Shabbir
- Department of Chemistry, Quaid-i-Azam University, Islamabad, Pakistan
| | | | - Vickie McKee
- School of Chemical Sciences, Dublin City University, Glasnevin, Ireland
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25
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Vejlegaard K, Wegeberg C, McKee V, Wengel J. Novel conformationally constrained 2'-C-methylribonucleosides: synthesis and incorporation into oligonucleotides. Org Biomol Chem 2019; 16:1312-1321. [PMID: 29392247 DOI: 10.1039/c7ob02663c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Synthesis of two novel conformationally constrained bicyclic ribonucleoside phosphoramidites bearing a 2'-C-methyl substituent has been accomplished. These phosphoramidites were used to incorporate the corresponding 2'-C-methyl nucleotides into oligonucleotides and to study their effects on duplex thermal stability. Whereas the C2'-O4'-linked LNA-type derivative induced severe destabilization of duplexes formed with complementary DNA and RNA, the C3'-O4'-linked derivative induced RNA-selective hybridization with increased affinity relative to that of the unmodified DNA-based probe.
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Affiliation(s)
- Kim Vejlegaard
- Biomolecular Nanoscale Engineering Center, Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, DK-5230 Odense M, Denmark. jwe@sdu
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26
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Abstract
Herein we provide an accessible account of molecular methods to probe inorganic–nucleic acid interactions. Techniques are described using copper(ii) and platinum(ii) complexes prepared in our laboratories.
The binding of small molecule metallodrugs to discrete regions of nucleic acids is an important branch of medicinal chemistry and the nature of these interactions, allied with sequence selectivity, forms part of the backbone of modern medicinal inorganic chemistry research. In this tutorial review we describe a range of molecular methods currently employed within our laboratories to explore novel metallodrug–DNA interactions. At the outset, an introduction to DNA from a structural perspective is provided along with descriptions of non-covalent DNA recognition focusing on intercalation, insertion, and phosphate binding. Molecular methods, described from a non-expert perspective, to identify non-covalent and pre-associative nucleic acid recognition are then demonstrated using a variety of techniques including direct (non-optical) and indirect (optical) methods. Direct methods include: X-ray crystallography; NMR spectroscopy; mass spectrometry; and viscosity while indirect approaches detail: competitive inhibition experiments; fluorescence and absorbance spectroscopy; circular dichroism; and electrophoresis-based techniques. For each method described we provide an overview of the technique, a detailed examination of results obtained and relevant follow-on of advanced biophysical/analytical techniques. To achieve this, a selection of relevant copper(ii) and platinum(ii) complexes developed within our laboratories are discussed and are compared, where possible, to classical DNA binding agents. Applying these molecular methods enables us to determine structure–activity factors important to rational metallodrug design. In many cases, combinations of molecular methods are required to comprehensively elucidate new metallodrug–DNA interactions and, from a drug discovery perspective, coupling this data with cellular responses helps to inform understanding of how metallodrug–DNA binding interactions manifest cytotoxic action.
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Affiliation(s)
- Andrew Kellett
- School of Chemical Sciences and the National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland.
| | - Zara Molphy
- School of Chemical Sciences and the National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland.
| | - Creina Slator
- School of Chemical Sciences and the National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland.
| | - Vickie McKee
- School of Chemical Sciences and the National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland. and Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark
| | - Nicholas P Farrell
- Department of Chemistry, Virginia Commonwealth University, Richmond, VA 23284-2006, USA.
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Zuin Fantoni N, Molphy Z, Slator C, Menounou G, Toniolo G, Mitrikas G, McKee V, Chatgilialoglu C, Kellett A. Frontispiece: Polypyridyl‐Based Copper Phenanthrene Complexes: A New Type of Stabilized Artificial Chemical Nuclease. Chemistry 2019. [DOI: 10.1002/chem.201980162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Nicoló Zuin Fantoni
- School of Chemical Sciences and National Institute for Cellular, BiotechnologyDublin City University 9 Glasnevin, Dublin Ireland
| | - Zara Molphy
- School of Chemical Sciences and National Institute for Cellular, BiotechnologyDublin City University 9 Glasnevin, Dublin Ireland
| | - Creina Slator
- School of Chemical Sciences and National Institute for Cellular, BiotechnologyDublin City University 9 Glasnevin, Dublin Ireland
| | - Georgia Menounou
- ISOF-CNR Area della Ricerca di Bologna Via P. Gobetti 101 40129 Bologna Italy
| | - Gianluca Toniolo
- Institute of Nanoscience and Nanotechnology, N.C.S.R. Demokritos Agia Paraskevi Attikis P.O. Box 60037 15341 Athens Greece
| | - George Mitrikas
- Institute of Nanoscience and Nanotechnology, N.C.S.R. Demokritos Agia Paraskevi Attikis P.O. Box 60037 15341 Athens Greece
| | - Vickie McKee
- School of Chemical Sciences and National Institute for Cellular, BiotechnologyDublin City University 9 Glasnevin, Dublin Ireland
- Department of Physics, Chemistry and PharmacyUniversity of Southern Denmark Campusvej 55 5230 Odense M Denmark
| | - Chryssostomos Chatgilialoglu
- ISOF-CNR Area della Ricerca di Bologna Via P. Gobetti 101 40129 Bologna Italy
- Institute of Nanoscience and Nanotechnology, N.C.S.R. Demokritos Agia Paraskevi Attikis P.O. Box 60037 15341 Athens Greece
| | - Andrew Kellett
- School of Chemical Sciences and National Institute for Cellular, BiotechnologyDublin City University 9 Glasnevin, Dublin Ireland
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Wegeberg C, Nielsen D, Mossin S, Abrahams BF, McKee V, McKenzie CJ. Reversible and Vapochromic Chemisorption of Ammonia by a Copper(II) Coordination Polymer. Aust J Chem 2019. [DOI: 10.1071/ch19264] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The single crystal X-ray structure determination of {[Cu(tpt)(o-phthalate)]·31/3(C2H2Cl4)}n (tpt=2,4,6-tri-4-pyridyl-1,3,5-triazine, C2H2Cl4=1,1,2,2-tetrachloroethane=TCE) shows a 3D network in which CuII centres are linked by 3-connecting tpt ligands with the topology of a 12,3 net. CuII centres are further linked by o-phthalate dianions. The copper coordination geometry is square pyramidal, with o-phthalate oxygen donors trans to each other in the basal plane and the remaining positions taken by the pyridines of three linking tpt units. The solvent accessible void space is ~65%. The pale blue-green crystalline desolvate, obtained by heating to 200°C or washing the TCE solvate with acetone is formulated as [Cu(tpt)(o-phthalate)]n. Powder X-ray diffraction and electron paramagnetic resonance spectroscopy show that the crystal structure and the CuII geometry changes upon desolvation. The crystalline desolvated phase sorbs two equivalents of ammonia per copper ion. The adduct, mauve [Cu(tpt)(o-phthalate)(NH3)2]n, shows reasonable crystallinity and is stable up to ~150°C under ambient conditions before the reversible desorption (minimum 10 cycles) of the guest ammonia. The colour change and high desorption temperature, along with changes in g values, is suggestive of chemisorption in two steps with Cu–ammine bonding in the loaded phase.
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Mondal M, Panda M, Davis NW, McKee V, Kerrigan NJ. Asymmetric synthesis of cyclopentanones through dual Lewis acid-catalysed [3+2]-cycloaddition of donor–acceptor cyclopropanes with ketenes. Chem Commun (Camb) 2019; 55:13558-13561. [DOI: 10.1039/c9cc07477e] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A dual Lewis acid system promotes the formal [3+2]-cycloaddition of enantioenriched donor–acceptor cyclopropanes with ketenes to afford cyclopentanones.
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Affiliation(s)
| | | | | | - Vickie McKee
- School of Chemical Sciences
- Dublin City University
- Dublin 9
- Ireland
- Department of Physics
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Mansoor M, McKee V, Yusof F, Lim S, Zubir M, Ming H, Mazhar M. Lanthanum–titanium oxide composite from a single molecular cluster: Non-enzymatic mesoporous electrochemical nitrite ion sensor. Polyhedron 2018. [DOI: 10.1016/j.poly.2018.09.045] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Zuin Fantoni N, Molphy Z, Slator C, Menounou G, Toniolo G, Mitrikas G, McKee V, Chatgilialoglu C, Kellett A. Polypyridyl‐Based Copper Phenanthrene Complexes: A New Type of Stabilized Artificial Chemical Nuclease. Chemistry 2018; 25:221-237. [DOI: 10.1002/chem.201804084] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Indexed: 11/09/2022]
Affiliation(s)
- Nicoló Zuin Fantoni
- School of Chemical Sciences and National Institute for Cellular, BiotechnologyDublin City University 9 Glasnevin, Dublin Ireland
| | - Zara Molphy
- School of Chemical Sciences and National Institute for Cellular, BiotechnologyDublin City University 9 Glasnevin, Dublin Ireland
| | - Creina Slator
- School of Chemical Sciences and National Institute for Cellular, BiotechnologyDublin City University 9 Glasnevin, Dublin Ireland
| | - Georgia Menounou
- ISOF-CNR Area della Ricerca di Bologna Via P. Gobetti 101 40129 Bologna Italy
| | - Gianluca Toniolo
- Institute of Nanoscience and Nanotechnology, N.C.S.R. Demokritos Agia Paraskevi Attikis P.O. Box 60037, 15341 Athens Greece
| | - George Mitrikas
- Institute of Nanoscience and Nanotechnology, N.C.S.R. Demokritos Agia Paraskevi Attikis P.O. Box 60037, 15341 Athens Greece
| | - Vickie McKee
- School of Chemical Sciences and National Institute for Cellular, BiotechnologyDublin City University 9 Glasnevin, Dublin Ireland
- Department of Physics, Chemistry and PharmacyUniversity of Southern Denmark Campusvej 55 5230 Odense M Denmark
| | - Chryssostomos Chatgilialoglu
- ISOF-CNR Area della Ricerca di Bologna Via P. Gobetti 101 40129 Bologna Italy
- Institute of Nanoscience and Nanotechnology, N.C.S.R. Demokritos Agia Paraskevi Attikis P.O. Box 60037, 15341 Athens Greece
| | - Andrew Kellett
- School of Chemical Sciences and National Institute for Cellular, BiotechnologyDublin City University 9 Glasnevin, Dublin Ireland
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Jakobsen V, Viganor L, Blanco-Fernández A, Howe O, Devereux M, McKenzie CJ, McKee V. Tetrameric and polymeric silver complexes of the omeprazole scaffold; synthesis, structure, in vitro and in vivo antimicrobial activities and DNA interaction. J Inorg Biochem 2018; 186:317-328. [PMID: 30025225 DOI: 10.1016/j.jinorgbio.2018.05.018] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 03/21/2018] [Accepted: 05/26/2018] [Indexed: 10/14/2022]
Abstract
Two complexes [AgI(pmtbH)]4 (1) and {[Ag4(pmtbH)4(NO3)4·2X}n (2) (where pmtbH is 2-[(2-pyridinylmethyl)thio]-1H-benzimidazole and X is H2O or MeOH) were synthesised and structurally characterised. Complex 2 showed therapeutic potential against Candida albicans, Escherichia coli, Staphylococcus aureus and Pseudomonas aeruginosa but complex 1 did not show significant activity in vitro. Further in vivo studies using larvae of the insect Galleria mellonella indicated that complex 2 significantly stimulates the immune system and that pre-treatment with the complex offers appreciable protection against all three bacteria. Real-time flow cytometry data support the observed antimicrobial profile of complex 2 and suggest the antimicrobial response may be linked to a form of bacterial programmed cell death (PCD). Complex 2 was found to interact with DNA in the bacterial and fungal cells but it did not cleave plasmid DNA isolated from the three bacteria.
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Affiliation(s)
- Vibe Jakobsen
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark
| | - Livia Viganor
- The Centre for Biomimetic and Therapeutic Research, FOCAS Research Institute, Dublin Institute of Technology, Camden Row, Dublin 8, Ireland
| | - Alfonso Blanco-Fernández
- UCD-Conway Institute of Biomolecular & Biomedical Research, University College Dublin, Dublin, Ireland
| | - Orla Howe
- The Centre for Biomimetic and Therapeutic Research, FOCAS Research Institute, Dublin Institute of Technology, Camden Row, Dublin 8, Ireland
| | - Michael Devereux
- The Centre for Biomimetic and Therapeutic Research, FOCAS Research Institute, Dublin Institute of Technology, Camden Row, Dublin 8, Ireland
| | - Christine J McKenzie
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark
| | - Vickie McKee
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark.
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Ashraf AR, Akhter Z, Simon LC, McKee V, Castel CD. Synthesis of polyimides from α,αʹ-bis(3-aminophenoxy)-p-xylene: Spectroscopic, single crystal XRD and thermal studies. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2018.01.098] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Stefanou V, Matiadis D, Tsironis D, Igglessi-Markopoulou O, McKee V, Markopoulos J. Synthesis and single crystal X-ray diffraction studies of coumarin-based Zn(II) and Mn(II) complexes, involving supramolecular interactions. Polyhedron 2018. [DOI: 10.1016/j.poly.2017.12.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Sirajuddin M, McKee V, Tariq M, Ali S. Newly designed organotin(IV) carboxylates with peptide linkage: Synthesis, structural elucidation, physicochemical characterizations and pharmacological investigations. Eur J Med Chem 2018; 143:1903-1918. [DOI: 10.1016/j.ejmech.2017.11.001] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Revised: 10/18/2017] [Accepted: 11/01/2017] [Indexed: 12/16/2022]
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Shabbir M, Akhter Z, Ahmad I, Ahmed S, Bolte M, McKee V. Synthesis and bioelectrochemical behavior of aromatic amines. Bioorg Chem 2017; 75:224-234. [PMID: 29017065 DOI: 10.1016/j.bioorg.2017.10.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2017] [Revised: 09/21/2017] [Accepted: 10/02/2017] [Indexed: 01/20/2023]
Abstract
Four aromatic amines 1-amino-4-phenoxybenzene (A1), 4-(4-aminophenyloxy) biphenyl (A2), 1-(4-aminophenoxy) naphthalene (A3) and 2-(4-aminophenoxy) naphthalene (A4) were synthesized and characterized by elemental, spectroscopic (FTIR, NMR), mass spectrometric and single crystal X-ray diffraction methods. The compounds crystallized in monoclinic crystal system with space group P21. Intermolecular hydrogen bonds were observed between the amine group and amine/ether acceptors of neighboring molecules. Electrochemical investigations were done using cyclic voltammetry (CV), square wave voltammetry (SWV) and differential pulse voltammetry (DPV). CV studies showed that oxidation of aromatic amines takes place at about 0.9 V (vs. Ag/AgCl) and the electron transfer (ET) process has irreversible nature. After first scan reactive intermediate were generated electrochemically and some other cathodic and anodic peaks also appeared in the succeeding scans. DPV study revealed that ET process is accompanied by one electron. DNA binding study of aromatic amines was performed by CV and UV-visible spectroscopy. These investigations revealed groove binding mode of interaction of aromatic amines with DNA.
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Affiliation(s)
- Muhammad Shabbir
- Department of Chemistry, Quaid-i-Azam University, Islamabad 45320, Pakistan
| | - Zareen Akhter
- Department of Chemistry, Quaid-i-Azam University, Islamabad 45320, Pakistan.
| | - Iqbal Ahmad
- Department of Chemistry, Allama Iqbal Open University, Islamabad 44000, Pakistan
| | - Safeer Ahmed
- Department of Chemistry, Quaid-i-Azam University, Islamabad 45320, Pakistan.
| | - Michael Bolte
- Institut für Anorganische Chemie, J.W. Goethe-Universität Frankfurt, Max-Von-Laue-Strasse 7, Frankfurt/Main 60438, Germany
| | - Vickie McKee
- School of Chemical Sciences, Dublin City University, Glasnevin, Dublin 9, Ireland
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Shabbir M, Ahmad I, Ismail H, Ahmed S, McKee V, Akhter Z, Mirza B. Pharmacological, electrochemical and drug–DNA interaction aspects of tridentate Schiff bases and their triphenylphosphine nickel(II) complexes. Polyhedron 2017. [DOI: 10.1016/j.poly.2017.05.046] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Kose M, Duman SE, McKee V, Akyol I, Kurtoglu M. Hydrogen bond directed 1D to 3D structures of square-planar Ni(II) complexes and their antimicrobial studies. Inorganica Chim Acta 2017. [DOI: 10.1016/j.ica.2017.04.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Shabbir M, Akhter Z, Ahmad I, Ahmed S, McKee V, Ismail H, Mirza B. Copper (II) complexes bearing ether based ON donor bidentate Schiff bases: Synthesis, characterization, biological and electrochemical investigations. Polyhedron 2017. [DOI: 10.1016/j.poly.2016.12.039] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Sawyer T, Nelson MJ, McKee V, Bowers MT, Meggitt C, Baxt SK, Washington D, Saladino L, Lehman EP, Brewer C, Locke SC, Abernethy A, Gilliss CL, Granger BB. Implementing Electronic Tablet-Based Education of Acute Care Patients. Crit Care Nurse 2017; 36:60-70. [PMID: 26830181 DOI: 10.4037/ccn2016541] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
Poor education-related discharge preparedness for patients with heart failure is believed to be a major cause of avoidable rehospitalizations. Technology-based applications offer innovative educational approaches that may improve educational readiness for patients in both inpatient and outpatient settings; however, a number of challenges exist when implementing electronic devices in the clinical setting. Implementation challenges include processes for "on-boarding" staff, mediating risks of cross-contamination with patients' device use, and selling the value to staff and health system leaders to secure the investment in software, hardware, and system support infrastructure. Strategies to address these challenges are poorly described in the literature. The purpose of this article is to present a staff development program designed to overcome challenges in implementing an electronic, tablet-based education program for patients with heart failure.
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Affiliation(s)
- Tenita Sawyer
- Tenita Sawyer is a clinical nurse at the Duke Heart Center, Duke University Health System, Durham, North Carolina.Monica J. Nelson is a nurse at the University of North Carolina at Chapel Hill School of Nursing, Chapel Hill, North Carolina.Vickie McKee is a clinical nurse at the Duke Heart Center, Duke University Health System.Margaret T. Bowers is an assistant professor at the Duke University School of Nursing and Duke University Health System, Durham, North Carolina.Corilin Meggitt is a nurse at the Duke University School of Nursing.Sarah K. Baxt is a nurse at the Duke University School of Nursing.Delphine Washington is nurse manager, education, cardiology nursing, Duke Heart Center, Duke University Health System.Louise Saladino is clinical operations director, cardiology nursing, Duke Heart Center, Duke University Health System.E. Philip Lehman IV is a fellow in cardiovascular disease at the Department of Medicine, Duke University School of Medicine, Durham, North Carolina.Cheryl Brewer is manager of clinical trials operations and project management, Duke Cancer Care Research Program/Center for Learning Health Care, Duke Clinical Research Institute, Durham, North Carolina.Susan C. Locke is senior scientist and project leader at the Center for Learning Health Care, Duke Clinical Research Institute.Amy Abernethy is director of the Duke Center for Learning Health Care and a professor in the Duke University Department of Medicine and School of Nursing.Catherine L. Gilliss is dean of the Duke University School of Nursing.Bradi B. Granger is director of the Duke Heart Center Nursing Research Program and an associate professor in the Duke University School of Nursing
| | - Monica J Nelson
- Tenita Sawyer is a clinical nurse at the Duke Heart Center, Duke University Health System, Durham, North Carolina.Monica J. Nelson is a nurse at the University of North Carolina at Chapel Hill School of Nursing, Chapel Hill, North Carolina.Vickie McKee is a clinical nurse at the Duke Heart Center, Duke University Health System.Margaret T. Bowers is an assistant professor at the Duke University School of Nursing and Duke University Health System, Durham, North Carolina.Corilin Meggitt is a nurse at the Duke University School of Nursing.Sarah K. Baxt is a nurse at the Duke University School of Nursing.Delphine Washington is nurse manager, education, cardiology nursing, Duke Heart Center, Duke University Health System.Louise Saladino is clinical operations director, cardiology nursing, Duke Heart Center, Duke University Health System.E. Philip Lehman IV is a fellow in cardiovascular disease at the Department of Medicine, Duke University School of Medicine, Durham, North Carolina.Cheryl Brewer is manager of clinical trials operations and project management, Duke Cancer Care Research Program/Center for Learning Health Care, Duke Clinical Research Institute, Durham, North Carolina.Susan C. Locke is senior scientist and project leader at the Center for Learning Health Care, Duke Clinical Research Institute.Amy Abernethy is director of the Duke Center for Learning Health Care and a professor in the Duke University Department of Medicine and School of Nursing.Catherine L. Gilliss is dean of the Duke University School of Nursing.Bradi B. Granger is director of the Duke Heart Center Nursing Research Program and an associate professor in the Duke University School of Nursing
| | - Vickie McKee
- Tenita Sawyer is a clinical nurse at the Duke Heart Center, Duke University Health System, Durham, North Carolina.Monica J. Nelson is a nurse at the University of North Carolina at Chapel Hill School of Nursing, Chapel Hill, North Carolina.Vickie McKee is a clinical nurse at the Duke Heart Center, Duke University Health System.Margaret T. Bowers is an assistant professor at the Duke University School of Nursing and Duke University Health System, Durham, North Carolina.Corilin Meggitt is a nurse at the Duke University School of Nursing.Sarah K. Baxt is a nurse at the Duke University School of Nursing.Delphine Washington is nurse manager, education, cardiology nursing, Duke Heart Center, Duke University Health System.Louise Saladino is clinical operations director, cardiology nursing, Duke Heart Center, Duke University Health System.E. Philip Lehman IV is a fellow in cardiovascular disease at the Department of Medicine, Duke University School of Medicine, Durham, North Carolina.Cheryl Brewer is manager of clinical trials operations and project management, Duke Cancer Care Research Program/Center for Learning Health Care, Duke Clinical Research Institute, Durham, North Carolina.Susan C. Locke is senior scientist and project leader at the Center for Learning Health Care, Duke Clinical Research Institute.Amy Abernethy is director of the Duke Center for Learning Health Care and a professor in the Duke University Department of Medicine and School of Nursing.Catherine L. Gilliss is dean of the Duke University School of Nursing.Bradi B. Granger is director of the Duke Heart Center Nursing Research Program and an associate professor in the Duke University School of Nursing
| | - Margaret T Bowers
- Tenita Sawyer is a clinical nurse at the Duke Heart Center, Duke University Health System, Durham, North Carolina.Monica J. Nelson is a nurse at the University of North Carolina at Chapel Hill School of Nursing, Chapel Hill, North Carolina.Vickie McKee is a clinical nurse at the Duke Heart Center, Duke University Health System.Margaret T. Bowers is an assistant professor at the Duke University School of Nursing and Duke University Health System, Durham, North Carolina.Corilin Meggitt is a nurse at the Duke University School of Nursing.Sarah K. Baxt is a nurse at the Duke University School of Nursing.Delphine Washington is nurse manager, education, cardiology nursing, Duke Heart Center, Duke University Health System.Louise Saladino is clinical operations director, cardiology nursing, Duke Heart Center, Duke University Health System.E. Philip Lehman IV is a fellow in cardiovascular disease at the Department of Medicine, Duke University School of Medicine, Durham, North Carolina.Cheryl Brewer is manager of clinical trials operations and project management, Duke Cancer Care Research Program/Center for Learning Health Care, Duke Clinical Research Institute, Durham, North Carolina.Susan C. Locke is senior scientist and project leader at the Center for Learning Health Care, Duke Clinical Research Institute.Amy Abernethy is director of the Duke Center for Learning Health Care and a professor in the Duke University Department of Medicine and School of Nursing.Catherine L. Gilliss is dean of the Duke University School of Nursing.Bradi B. Granger is director of the Duke Heart Center Nursing Research Program and an associate professor in the Duke University School of Nursing
| | - Corilin Meggitt
- Tenita Sawyer is a clinical nurse at the Duke Heart Center, Duke University Health System, Durham, North Carolina.Monica J. Nelson is a nurse at the University of North Carolina at Chapel Hill School of Nursing, Chapel Hill, North Carolina.Vickie McKee is a clinical nurse at the Duke Heart Center, Duke University Health System.Margaret T. Bowers is an assistant professor at the Duke University School of Nursing and Duke University Health System, Durham, North Carolina.Corilin Meggitt is a nurse at the Duke University School of Nursing.Sarah K. Baxt is a nurse at the Duke University School of Nursing.Delphine Washington is nurse manager, education, cardiology nursing, Duke Heart Center, Duke University Health System.Louise Saladino is clinical operations director, cardiology nursing, Duke Heart Center, Duke University Health System.E. Philip Lehman IV is a fellow in cardiovascular disease at the Department of Medicine, Duke University School of Medicine, Durham, North Carolina.Cheryl Brewer is manager of clinical trials operations and project management, Duke Cancer Care Research Program/Center for Learning Health Care, Duke Clinical Research Institute, Durham, North Carolina.Susan C. Locke is senior scientist and project leader at the Center for Learning Health Care, Duke Clinical Research Institute.Amy Abernethy is director of the Duke Center for Learning Health Care and a professor in the Duke University Department of Medicine and School of Nursing.Catherine L. Gilliss is dean of the Duke University School of Nursing.Bradi B. Granger is director of the Duke Heart Center Nursing Research Program and an associate professor in the Duke University School of Nursing
| | - Sarah K Baxt
- Tenita Sawyer is a clinical nurse at the Duke Heart Center, Duke University Health System, Durham, North Carolina.Monica J. Nelson is a nurse at the University of North Carolina at Chapel Hill School of Nursing, Chapel Hill, North Carolina.Vickie McKee is a clinical nurse at the Duke Heart Center, Duke University Health System.Margaret T. Bowers is an assistant professor at the Duke University School of Nursing and Duke University Health System, Durham, North Carolina.Corilin Meggitt is a nurse at the Duke University School of Nursing.Sarah K. Baxt is a nurse at the Duke University School of Nursing.Delphine Washington is nurse manager, education, cardiology nursing, Duke Heart Center, Duke University Health System.Louise Saladino is clinical operations director, cardiology nursing, Duke Heart Center, Duke University Health System.E. Philip Lehman IV is a fellow in cardiovascular disease at the Department of Medicine, Duke University School of Medicine, Durham, North Carolina.Cheryl Brewer is manager of clinical trials operations and project management, Duke Cancer Care Research Program/Center for Learning Health Care, Duke Clinical Research Institute, Durham, North Carolina.Susan C. Locke is senior scientist and project leader at the Center for Learning Health Care, Duke Clinical Research Institute.Amy Abernethy is director of the Duke Center for Learning Health Care and a professor in the Duke University Department of Medicine and School of Nursing.Catherine L. Gilliss is dean of the Duke University School of Nursing.Bradi B. Granger is director of the Duke Heart Center Nursing Research Program and an associate professor in the Duke University School of Nursing
| | - Delphine Washington
- Tenita Sawyer is a clinical nurse at the Duke Heart Center, Duke University Health System, Durham, North Carolina.Monica J. Nelson is a nurse at the University of North Carolina at Chapel Hill School of Nursing, Chapel Hill, North Carolina.Vickie McKee is a clinical nurse at the Duke Heart Center, Duke University Health System.Margaret T. Bowers is an assistant professor at the Duke University School of Nursing and Duke University Health System, Durham, North Carolina.Corilin Meggitt is a nurse at the Duke University School of Nursing.Sarah K. Baxt is a nurse at the Duke University School of Nursing.Delphine Washington is nurse manager, education, cardiology nursing, Duke Heart Center, Duke University Health System.Louise Saladino is clinical operations director, cardiology nursing, Duke Heart Center, Duke University Health System.E. Philip Lehman IV is a fellow in cardiovascular disease at the Department of Medicine, Duke University School of Medicine, Durham, North Carolina.Cheryl Brewer is manager of clinical trials operations and project management, Duke Cancer Care Research Program/Center for Learning Health Care, Duke Clinical Research Institute, Durham, North Carolina.Susan C. Locke is senior scientist and project leader at the Center for Learning Health Care, Duke Clinical Research Institute.Amy Abernethy is director of the Duke Center for Learning Health Care and a professor in the Duke University Department of Medicine and School of Nursing.Catherine L. Gilliss is dean of the Duke University School of Nursing.Bradi B. Granger is director of the Duke Heart Center Nursing Research Program and an associate professor in the Duke University School of Nursing
| | - Louise Saladino
- Tenita Sawyer is a clinical nurse at the Duke Heart Center, Duke University Health System, Durham, North Carolina.Monica J. Nelson is a nurse at the University of North Carolina at Chapel Hill School of Nursing, Chapel Hill, North Carolina.Vickie McKee is a clinical nurse at the Duke Heart Center, Duke University Health System.Margaret T. Bowers is an assistant professor at the Duke University School of Nursing and Duke University Health System, Durham, North Carolina.Corilin Meggitt is a nurse at the Duke University School of Nursing.Sarah K. Baxt is a nurse at the Duke University School of Nursing.Delphine Washington is nurse manager, education, cardiology nursing, Duke Heart Center, Duke University Health System.Louise Saladino is clinical operations director, cardiology nursing, Duke Heart Center, Duke University Health System.E. Philip Lehman IV is a fellow in cardiovascular disease at the Department of Medicine, Duke University School of Medicine, Durham, North Carolina.Cheryl Brewer is manager of clinical trials operations and project management, Duke Cancer Care Research Program/Center for Learning Health Care, Duke Clinical Research Institute, Durham, North Carolina.Susan C. Locke is senior scientist and project leader at the Center for Learning Health Care, Duke Clinical Research Institute.Amy Abernethy is director of the Duke Center for Learning Health Care and a professor in the Duke University Department of Medicine and School of Nursing.Catherine L. Gilliss is dean of the Duke University School of Nursing.Bradi B. Granger is director of the Duke Heart Center Nursing Research Program and an associate professor in the Duke University School of Nursing
| | - E Philip Lehman
- Tenita Sawyer is a clinical nurse at the Duke Heart Center, Duke University Health System, Durham, North Carolina.Monica J. Nelson is a nurse at the University of North Carolina at Chapel Hill School of Nursing, Chapel Hill, North Carolina.Vickie McKee is a clinical nurse at the Duke Heart Center, Duke University Health System.Margaret T. Bowers is an assistant professor at the Duke University School of Nursing and Duke University Health System, Durham, North Carolina.Corilin Meggitt is a nurse at the Duke University School of Nursing.Sarah K. Baxt is a nurse at the Duke University School of Nursing.Delphine Washington is nurse manager, education, cardiology nursing, Duke Heart Center, Duke University Health System.Louise Saladino is clinical operations director, cardiology nursing, Duke Heart Center, Duke University Health System.E. Philip Lehman IV is a fellow in cardiovascular disease at the Department of Medicine, Duke University School of Medicine, Durham, North Carolina.Cheryl Brewer is manager of clinical trials operations and project management, Duke Cancer Care Research Program/Center for Learning Health Care, Duke Clinical Research Institute, Durham, North Carolina.Susan C. Locke is senior scientist and project leader at the Center for Learning Health Care, Duke Clinical Research Institute.Amy Abernethy is director of the Duke Center for Learning Health Care and a professor in the Duke University Department of Medicine and School of Nursing.Catherine L. Gilliss is dean of the Duke University School of Nursing.Bradi B. Granger is director of the Duke Heart Center Nursing Research Program and an associate professor in the Duke University School of Nursing
| | - Cheryl Brewer
- Tenita Sawyer is a clinical nurse at the Duke Heart Center, Duke University Health System, Durham, North Carolina.Monica J. Nelson is a nurse at the University of North Carolina at Chapel Hill School of Nursing, Chapel Hill, North Carolina.Vickie McKee is a clinical nurse at the Duke Heart Center, Duke University Health System.Margaret T. Bowers is an assistant professor at the Duke University School of Nursing and Duke University Health System, Durham, North Carolina.Corilin Meggitt is a nurse at the Duke University School of Nursing.Sarah K. Baxt is a nurse at the Duke University School of Nursing.Delphine Washington is nurse manager, education, cardiology nursing, Duke Heart Center, Duke University Health System.Louise Saladino is clinical operations director, cardiology nursing, Duke Heart Center, Duke University Health System.E. Philip Lehman IV is a fellow in cardiovascular disease at the Department of Medicine, Duke University School of Medicine, Durham, North Carolina.Cheryl Brewer is manager of clinical trials operations and project management, Duke Cancer Care Research Program/Center for Learning Health Care, Duke Clinical Research Institute, Durham, North Carolina.Susan C. Locke is senior scientist and project leader at the Center for Learning Health Care, Duke Clinical Research Institute.Amy Abernethy is director of the Duke Center for Learning Health Care and a professor in the Duke University Department of Medicine and School of Nursing.Catherine L. Gilliss is dean of the Duke University School of Nursing.Bradi B. Granger is director of the Duke Heart Center Nursing Research Program and an associate professor in the Duke University School of Nursing
| | - Susan C Locke
- Tenita Sawyer is a clinical nurse at the Duke Heart Center, Duke University Health System, Durham, North Carolina.Monica J. Nelson is a nurse at the University of North Carolina at Chapel Hill School of Nursing, Chapel Hill, North Carolina.Vickie McKee is a clinical nurse at the Duke Heart Center, Duke University Health System.Margaret T. Bowers is an assistant professor at the Duke University School of Nursing and Duke University Health System, Durham, North Carolina.Corilin Meggitt is a nurse at the Duke University School of Nursing.Sarah K. Baxt is a nurse at the Duke University School of Nursing.Delphine Washington is nurse manager, education, cardiology nursing, Duke Heart Center, Duke University Health System.Louise Saladino is clinical operations director, cardiology nursing, Duke Heart Center, Duke University Health System.E. Philip Lehman IV is a fellow in cardiovascular disease at the Department of Medicine, Duke University School of Medicine, Durham, North Carolina.Cheryl Brewer is manager of clinical trials operations and project management, Duke Cancer Care Research Program/Center for Learning Health Care, Duke Clinical Research Institute, Durham, North Carolina.Susan C. Locke is senior scientist and project leader at the Center for Learning Health Care, Duke Clinical Research Institute.Amy Abernethy is director of the Duke Center for Learning Health Care and a professor in the Duke University Department of Medicine and School of Nursing.Catherine L. Gilliss is dean of the Duke University School of Nursing.Bradi B. Granger is director of the Duke Heart Center Nursing Research Program and an associate professor in the Duke University School of Nursing
| | - Amy Abernethy
- Tenita Sawyer is a clinical nurse at the Duke Heart Center, Duke University Health System, Durham, North Carolina.Monica J. Nelson is a nurse at the University of North Carolina at Chapel Hill School of Nursing, Chapel Hill, North Carolina.Vickie McKee is a clinical nurse at the Duke Heart Center, Duke University Health System.Margaret T. Bowers is an assistant professor at the Duke University School of Nursing and Duke University Health System, Durham, North Carolina.Corilin Meggitt is a nurse at the Duke University School of Nursing.Sarah K. Baxt is a nurse at the Duke University School of Nursing.Delphine Washington is nurse manager, education, cardiology nursing, Duke Heart Center, Duke University Health System.Louise Saladino is clinical operations director, cardiology nursing, Duke Heart Center, Duke University Health System.E. Philip Lehman IV is a fellow in cardiovascular disease at the Department of Medicine, Duke University School of Medicine, Durham, North Carolina.Cheryl Brewer is manager of clinical trials operations and project management, Duke Cancer Care Research Program/Center for Learning Health Care, Duke Clinical Research Institute, Durham, North Carolina.Susan C. Locke is senior scientist and project leader at the Center for Learning Health Care, Duke Clinical Research Institute.Amy Abernethy is director of the Duke Center for Learning Health Care and a professor in the Duke University Department of Medicine and School of Nursing.Catherine L. Gilliss is dean of the Duke University School of Nursing.Bradi B. Granger is director of the Duke Heart Center Nursing Research Program and an associate professor in the Duke University School of Nursing
| | - Catherine L Gilliss
- Tenita Sawyer is a clinical nurse at the Duke Heart Center, Duke University Health System, Durham, North Carolina.Monica J. Nelson is a nurse at the University of North Carolina at Chapel Hill School of Nursing, Chapel Hill, North Carolina.Vickie McKee is a clinical nurse at the Duke Heart Center, Duke University Health System.Margaret T. Bowers is an assistant professor at the Duke University School of Nursing and Duke University Health System, Durham, North Carolina.Corilin Meggitt is a nurse at the Duke University School of Nursing.Sarah K. Baxt is a nurse at the Duke University School of Nursing.Delphine Washington is nurse manager, education, cardiology nursing, Duke Heart Center, Duke University Health System.Louise Saladino is clinical operations director, cardiology nursing, Duke Heart Center, Duke University Health System.E. Philip Lehman IV is a fellow in cardiovascular disease at the Department of Medicine, Duke University School of Medicine, Durham, North Carolina.Cheryl Brewer is manager of clinical trials operations and project management, Duke Cancer Care Research Program/Center for Learning Health Care, Duke Clinical Research Institute, Durham, North Carolina.Susan C. Locke is senior scientist and project leader at the Center for Learning Health Care, Duke Clinical Research Institute.Amy Abernethy is director of the Duke Center for Learning Health Care and a professor in the Duke University Department of Medicine and School of Nursing.Catherine L. Gilliss is dean of the Duke University School of Nursing.Bradi B. Granger is director of the Duke Heart Center Nursing Research Program and an associate professor in the Duke University School of Nursing
| | - Bradi B Granger
- Tenita Sawyer is a clinical nurse at the Duke Heart Center, Duke University Health System, Durham, North Carolina.Monica J. Nelson is a nurse at the University of North Carolina at Chapel Hill School of Nursing, Chapel Hill, North Carolina.Vickie McKee is a clinical nurse at the Duke Heart Center, Duke University Health System.Margaret T. Bowers is an assistant professor at the Duke University School of Nursing and Duke University Health System, Durham, North Carolina.Corilin Meggitt is a nurse at the Duke University School of Nursing.Sarah K. Baxt is a nurse at the Duke University School of Nursing.Delphine Washington is nurse manager, education, cardiology nursing, Duke Heart Center, Duke University Health System.Louise Saladino is clinical operations director, cardiology nursing, Duke Heart Center, Duke University Health System.E. Philip Lehman IV is a fellow in cardiovascular disease at the Department of Medicine, Duke University School of Medicine, Durham, North Carolina.Cheryl Brewer is manager of clinical trials operations and project management, Duke Cancer Care Research Program/Center for Learning Health Care, Duke Clinical Research Institute, Durham, North Carolina.Susan C. Locke is senior scientist and project leader at the Center for Learning Health Care, Duke Clinical Research Institute.Amy Abernethy is director of the Duke Center for Learning Health Care and a professor in the Duke University Department of Medicine and School of Nursing.Catherine L. Gilliss is dean of the Duke University School of Nursing.Bradi B. Granger is director of the Duke Heart Center Nursing Research Program and an associate professor in the Duke University School of Nursing.
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Slator C, Molphy Z, McKee V, Kellett A. Triggering autophagic cell death with a di-manganese(II) developmental therapeutic. Redox Biol 2017; 12:150-161. [PMID: 28236767 PMCID: PMC5328722 DOI: 10.1016/j.redox.2017.01.024] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Revised: 01/07/2017] [Accepted: 01/11/2017] [Indexed: 12/16/2022] Open
Abstract
There is an unmet need for novel metal-based chemotherapeutics with alternative modes of action compared to clinical agents such as cisplatin and metallo-bleomycin. Recent attention in this field has focused on designing intracellular ROS-mediators as powerful cytotoxins of human cancers and identifying potentially unique toxic mechanisms underpinning their utility. Herein, we report the developmental di-manganese(II) therapeutic [Mn2(μ-oda)(phen)4(H2O)2][Mn2(μ-oda)(phen)4(oda)2]·4H2O (Mn-Oda) induces autophagy-promoted apoptosis in human ovarian cancer cells (SKOV3). The complex was initially identified to intercalate DNA by topoisomerase I unwinding and circular dichroism spectroscopy. Intracellular DNA damage, detected by γH2AX and the COMET assay, however, is not linked to direct Mn-Oda free radical generation, but is instead mediated through the promotion of intracellular reactive oxygen species (ROS) leading to autophagic vacuole formation and downstream nuclear degradation. To elucidate the cytotoxic profile of Mn-Oda, a wide range of biomarkers specific to apoptosis and autophagy including caspase release, mitochondrial membrane integrity, fluorogenic probe localisation, and cell cycle analysis were employed. Through these techniques, the activity of Mn-Oda was compared directly to i.) the pro-apoptotic clinical anticancer drug doxorubicin, ii.) the multimodal histone deacetylase inhibitor suberoyanilide hydroxamic acid, and iii.) the autophagy inducer rapamycin. In conjunction with ROS-specific trapping agents and established inhibitors of autophagy, we have identified autophagy-induction linked to mitochondrial superoxide production, with confocal image analysis of SKOV3 cells further supporting autophagosome formation.
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Affiliation(s)
- Creina Slator
- School of Chemical Sciences and National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland
| | - Zara Molphy
- School of Chemical Sciences and National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland
| | - Vickie McKee
- School of Chemical Sciences and National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland
| | - Andrew Kellett
- School of Chemical Sciences and National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland.
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Abstract
The oxime-dipyridyl ligand on a copper complex is slowly oxygenated at the benzylic C–H bond in air.
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Affiliation(s)
- Claire Deville
- Department of Physics
- Chemistry and Pharmacy
- University of Southern Denmark
- 5230 Odense M
- Denmark
| | - Vickie McKee
- Department of Physics
- Chemistry and Pharmacy
- University of Southern Denmark
- 5230 Odense M
- Denmark
| | - Christine J. McKenzie
- Department of Physics
- Chemistry and Pharmacy
- University of Southern Denmark
- 5230 Odense M
- Denmark
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McStay N, Molphy Z, Coughlan A, Cafolla A, McKee V, Gathergood N, Kellett A. C 3-symmetric opioid scaffolds are pH-responsive DNA condensation agents. Nucleic Acids Res 2016; 45:527-540. [PMID: 27899572 PMCID: PMC5314759 DOI: 10.1093/nar/gkw1097] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Revised: 10/11/2016] [Accepted: 10/27/2016] [Indexed: 01/28/2023] Open
Abstract
Herein we report the synthesis of tripodal C3-symmetric opioid scaffolds as high-affinity condensation agents of duplex DNA. Condensation was achieved on both supercoiled and canonical B-DNA structures and identified by agarose electrophoresis, viscosity, turbidity and atomic force microscopy (AFM) measurements. Structurally, the requirement of a tris-opioid scaffold for condensation is demonstrated as both di- (C2-symmetric) and mono-substituted (C1-symmetric) mesitylene-linked opioid derivatives poorly coordinate dsDNA. Condensation, observed by toroidal and globule AFM aggregation, arises from surface-binding ionic interactions between protonated, cationic, tertiary amine groups on the opioid skeleton and the phosphate nucleic acid backbone. Indeed, by converting the 6-hydroxyl group of C3-morphine (MC3) to methoxy substituents in C3-heterocodeine (HC3) and C3-oripavine (OC3) molecules, dsDNA compaction is retained thus negating the possibility of phosphate—hydroxyl surface-binding. Tripodal opioid condensation was identified as pH dependent and strongly influenced by ionic strength with further evidence of cationic amine-phosphate backbone coordination arising from thermal melting analysis and circular dichroism spectroscopy, with compaction also witnessed on synthetic dsDNA co-polymers poly[d(A-T)2] and poly[d(G-C)2]. On-chip microfluidic analysis of DNA condensed by C3-agents provided concentration-dependent protection (inhibition) to site-selective excision by type II restriction enzymes: BamHI, HindIII, SalI and EcoRI, but not to the endonuclease DNase I.
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Affiliation(s)
- Natasha McStay
- School of Chemical Sciences and National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland
| | - Zara Molphy
- School of Chemical Sciences and National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland
| | - Alan Coughlan
- School of Chemical Sciences and National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland
| | - Attilio Cafolla
- School of Physical Sciences, Dublin City University, Glasnevin, Dublin 9, Ireland
| | - Vickie McKee
- School of Chemical Sciences and National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland
| | - Nicholas Gathergood
- Department of Chemistry, Tallinn University of Technology, Akadeemia tee 15, 12618 Tallinn, Estonia
| | - Andrew Kellett
- School of Chemical Sciences and National Institute for Cellular Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland
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Kose M, Hepokur C, Karakas D, McKee V, Kurtoglu M. Structural, computational and cytotoxic studies of square planar copper(II) complexes derived from dicyandiamide. Polyhedron 2016. [DOI: 10.1016/j.poly.2016.07.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Shabbir M, Akhter Z, Ahmad I, Ahmed S, Shafiq M, Mirza B, McKee V, Munawar KS, Ashraf AR. Schiff base triphenylphosphine palladium (II) complexes: Synthesis, structural elucidation, electrochemical and biological evaluation. J Mol Struct 2016. [DOI: 10.1016/j.molstruc.2016.04.003] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Köse M, Ceyhan G, Güngör SA, Purtaş S, McKee V. Structural characterisation and photoluminescence of a pyridine–diimine compound. J STRUCT CHEM+ 2016. [DOI: 10.1134/s0022476615070161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Deville C, Padamati SK, Sundberg J, McKee V, Browne WR, McKenzie CJ. Cover Picture: O 2
Activation and Double CH Oxidation by a Mononuclear Manganese(II) Complex (Angew. Chem. Int. Ed. 2/2016). Angew Chem Int Ed Engl 2016. [DOI: 10.1002/anie.201510984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Deville C, Padamati SK, Sundberg J, McKee V, Browne WR, McKenzie CJ. Titelbild: O 2
Activation and Double CH Oxidation by a Mononuclear Manganese(II) Complex (Angew. Chem. 2/2016). Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201510984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Wegeberg C, McKee V, McKenzie CJ. A coordinatively flexible hexadentate ligand gives structurally isomeric complexesM2(L)X3(M= Cu, Zn;X= Br, Cl). Acta Crystallogr C Struct Chem 2016; 72:68-74. [DOI: 10.1107/s2053229615023773] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Accepted: 12/10/2015] [Indexed: 11/10/2022]
Abstract
Polypyridyl multidentate ligands based on ethylenediamine backbones are important metal-binding agents with applications in biomimetics and homogeneous catalysis. The seemingly hexadentate tpena ligand [systematic name:N,N,N′-tris(pyridin-2-ylmethyl)ethylenediamine-N′-acetate] reacts with zinc chloride and zinc bromide to form trichlorido[μ-N,N,N′-tris(pyridin-2-ylmethyl)ethylenediamine-N′-acetato]dizinc(II), [Zn2(C22H24N5O2)Cl3], and tribromido[μ-N,N,N′-tris(pyridin-2-ylmethyl)ethylenediamine-N′-acetato]dizinc(II), [Zn2Br3(C22H24N5O2)]. One ZnIIion shows the anticipated N5O coordination in an irregular six-coordinate site and is linked by ananticarboxylate bridge to a tetrahedral ZnX3(X= Cl or Br) unit. In contrast, the CuIIions in aquatribromido[μ-N,N,N′-tris(pyridin-2-ylmethyl)ethylenediamine-N′-acetato]dicopper(II)–tribromido[μ-N,N,N′-tris(pyridin-2-ylmethyl)ethylenediamine-N′-acetato]dicopper(II)–water (1/1/6.5) [Cu2Br3(C22H24N5O2)][Cu2Br3(C22H24N5O2)(H2O)]·6.5H2O, occupy two tpena-chelated sites, one a trigonal bipyramidal N3Cl2site and the other a square-planar N2OCl site. In all three cases, electrospray ionization mass spectra were dominated by a misleading ion assignable to [M(tpena)]+(M= Zn2+and Cu2+).
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