1
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Kant S, Saha S, Lloret F, Cano J, Mukherjee R. A tetracobalt(II) cluster with a two vertex truncated dicubane topology endogenously supported by carboxylate-based (2-pyridyl)methylamine ligands: magneto-structural and DFT studies. Dalton Trans 2023; 52:11922-11933. [PMID: 37574905 DOI: 10.1039/d3dt01131c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/15/2023]
Abstract
A reaction between CoCl2 and L3-(CO2-)2 (2 : 1 stoichiometry) in CH3OH affords a discrete complex [CoII4-{L3-(CO2-)2}2(μ3-OCH3)2(CH3OH)2(H2O)2Cl2] (1) [L3-(CO2-)2 = 3-[N-{2-(pyridin-2-yl)methyl}amino]-bis(propionate)]. The structure of 1 reveals two terminal mononuclear CoII{L3-(CO2-)2}Cl units connected by a dimeric CoII2(μ3-OCH3)2(CH3OH)2(H2O) unit present in the centre through two methoxo (μ3-OCH3)- and two carboxylate (μ-1,1-OCO-) bridges affording a tetranuclear coordination cluster of Co(II) with a defective dicubane topology. In 1, Co1 (terminal) has distorted octahedral CoIIN2O3Cl and the central Co2 has CoIIO6 coordination. Such coordination arrangements afford the observed topology. Variable-temperature magnetic studies reveal anti-ferromagnetic coupling in 1. Three magnetic exchange interactions (one anti-ferromagnetic and two ferromagnetic: J1 = +3.3 cm-1 (Co⋯Co 3.176 Å; μ-1,1-OCO- and μ3-OCH3 bridges), J2 = -2.5 cm-1 (Co⋯Co 3.228 Å; μ-1-OCO- and μ3-OCH3 bridges) and J3 = +10.6 cm-1 (Co⋯Co 3.084 Å; two μ3-OCH3 bridges)) have been identified, with the inclusion of the orbital reduction parameter (α = Aκ = 1.38), spin-orbit coupling (λ = -158 cm-1) and axial distortion (energy gap Δ = -975 cm-1 between singlet and doublet levels), rationalized by density functional theory (DFT) calculations.
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Affiliation(s)
- Shashi Kant
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh 208016, India.
- Department of Chemistry, Bhola Prasad Singh College, Bhore, Gopalganj (Jai Prakash University Chapra), Bihar 841426, India
| | - Sayan Saha
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh 208016, India.
| | - Francesc Lloret
- Departament de Química Inorgànica/Instituto de Ciencia Molecular (ICMOL), Universitat de València, Polígono de la Coma, s/n, 46980 Paterna, València, Spain
| | - Joan Cano
- Instituto de Ciencia Molecular/Departament de Química Inorgànica, Universitat de València, C/Catedrático José Beltrán 2, 46980 Paterna, València, Spain.
| | - Rabindranath Mukherjee
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh 208016, India.
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Jeong D, Selverstone Valentine J, Cho J. Bio-inspired mononuclear nonheme metal peroxo complexes: Synthesis, structures and mechanistic studies toward understanding enzymatic reactions. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2023.215021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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3
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Zoumpoulaki M, Schanne G, Delsuc N, Preud'homme H, Quévrain E, Eskenazi N, Gazzah G, Guillot R, Seksik P, Vinh J, Lobinski R, Policar C. Deciphering the Metal Speciation in Low‐Molecular‐Weight Complexes by IMS‐MS: Application to the Detection of Manganese Superoxide Dismutase Mimics in Cell Lysates. Angew Chem Int Ed Engl 2022; 61:e202203066. [DOI: 10.1002/anie.202203066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Indexed: 11/09/2022]
Affiliation(s)
- Martha Zoumpoulaki
- Laboratoire des biomolécules (LBM) Département de chimie École normale supérieure PSL University, Sorbonne Université, CNRS 75005 Paris France
- SMBP ESPCI Paris PSL University, UMR 8249 CNRS France
- Centre de Recherche de Saint-Antoine, INSERM, UMRS 938 Sorbonne University, INSERM 75012 Paris France
| | - Gabrielle Schanne
- Laboratoire des biomolécules (LBM) Département de chimie École normale supérieure PSL University, Sorbonne Université, CNRS 75005 Paris France
- Centre de Recherche de Saint-Antoine, INSERM, UMRS 938 Sorbonne University, INSERM 75012 Paris France
| | - Nicolas Delsuc
- Laboratoire des biomolécules (LBM) Département de chimie École normale supérieure PSL University, Sorbonne Université, CNRS 75005 Paris France
| | | | - Elodie Quévrain
- Laboratoire des biomolécules (LBM) Département de chimie École normale supérieure PSL University, Sorbonne Université, CNRS 75005 Paris France
| | | | - Géraldine Gazzah
- Laboratoire des biomolécules (LBM) Département de chimie École normale supérieure PSL University, Sorbonne Université, CNRS 75005 Paris France
| | - Regis Guillot
- ICMMO UMR CNRS 8182 Université Paris-Saclay 91405 Orsay France
| | - Philippe Seksik
- Centre de Recherche de Saint-Antoine, INSERM, UMRS 938 Sorbonne University, INSERM 75012 Paris France
- Gastroenterology Department Saint-Antoine Hospital Sorbonne Université, APHP Paris France
| | - Joelle Vinh
- SMBP ESPCI Paris PSL University, UMR 8249 CNRS France
| | - Ryszard Lobinski
- Universite de Pau, CNRS, E2S, IPREM-UMR5254, Hélioparc 64053 Pau France
- Chair of Analytical Chemistry Warsaw University of Technology, Noakowskiego 3 00-664 Warsaw Poland
| | - Clotilde Policar
- Laboratoire des biomolécules (LBM) Département de chimie École normale supérieure PSL University, Sorbonne Université, CNRS 75005 Paris France
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4
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Deciphering the Metal Speciation in Low‐Molecular‐Weight Complexes by IMS‐MS: Application to the Detection of Manganese Superoxide Dismutase Mimics in Cell Lysates. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202203066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Massie AA, Kostopoulos N, Grotemeyer EN, Noël J, Jackson TA, Anxolabéhère‐Mallart E. Electrochemical Formation and Reactivity of a Mn‐Peroxo Complex Bearing an Amido N5 Ligand. ChemElectroChem 2022. [DOI: 10.1002/celc.202200112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Allyssa A. Massie
- Department of Chemistry University of Kansas 1567 Irving Hill Road Lawrence KS 66045 USA
| | - Nikolaos Kostopoulos
- Université Paris Cité, CNRS, Laboratoire d'Electrochimie Moléculaire F-75013> Paris France
| | | | - Jean‐Marc Noël
- Université Paris Cité, CNRS, ITODYS F-75013 Paris France
| | - Timothy A. Jackson
- Department of Chemistry University of Kansas 1567 Irving Hill Road Lawrence KS 66045 USA
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Evaluation of the compounds commonly known as superoxide dismutase and catalase mimics in cellular models. J Inorg Biochem 2021; 219:111431. [PMID: 33798828 DOI: 10.1016/j.jinorgbio.2021.111431] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Revised: 03/15/2021] [Accepted: 03/15/2021] [Indexed: 12/15/2022]
Abstract
Oxidative stress that results from an imbalance between the concentrations of reactive species (RS) and antioxidant defenses is associated with many pathologies. Superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase are among the key enzymes that maintain the low nanomolar physiological concentrations of superoxide and hydrogen peroxide. The increase in the levels of these species and their progeny could have deleterious effects. In this context, chemists have developed SOD and CAT mimics to supplement them when cells are overwhelmed with oxidative stress. However, the beneficial activity of such molecules in cells depends not only on their intrinsic catalytic activities but also on their stability in biological context, their cell penetration and their cellular localization. We have employed cellular assays to characterize several compounds that possess SOD and CAT activities and have been frequently used in cellular and animal models. We used cellular assays that address SOD and CAT activities of the compounds. Finally, we determined the effect of compounds on the suppression of the inflammation in HT29-MD2 cells challenged by lipopolysaccharide. When the assay requires penetration inside cells, the SOD mimics Mn(III) meso-tetrakis(N-(2'-n-butoxyethyl)pyridinium-2-yl)porphyrin (MnTnBuOE-2-PyP5+) and Mn(II) dichloro[(4aR,13aR,17aR,21aR)-1,2,3,4,4a,5,6,12,13,13a,14,15,16,17,17a,18,19,20,21,21a-eicosahydro-11,7-nitrilo-7Hdibenzo[b,h] [1,4, 7,10] tetraazacycloheptadecine-κN5,κN13,κN18,κN21,κN22] (Imisopasem manganese, M40403, CG4419) were found efficacious at 10 μM, while Mn(II) chloro N-(phenolato)-N,N'-bis[2-(N-methyl-imidazolyl)methyl]-ethane-1,2-diamine (Mn1) requires an incubation at 100 μM. This study thus demonstrates that MnTnBuOE-2-PyP5+, M40403 and Mn1 were efficacious in suppressing inflammatory response in HT29-MD2 cells and such action appears to be related to their ability to enter the cells and modulate reactive oxygen species (ROS) levels.
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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] [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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Manda M, Arora H, Sengupta A, Kant S, Lloret F, Mukherjee R. Dimeric Mn( ii), Co( ii), Ni( ii) and Cu( ii) complexes of a common carboxylate-appended (2-pyridyl)alkylamine ligand: structure, magnetism and DFT study. NEW J CHEM 2021. [DOI: 10.1039/d1nj01150b] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Weak anti- (1) and ferro-magnetic (2–4) interactions are observed in [MII2(L3)2(S)2]2+ (Mn 1, Co 2, Ni 3) (S = MeOH) and Cu 4 (S = none).
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Affiliation(s)
- Munirathnam Manda
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741 246, India
| | - Himanshu Arora
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208 016, India
- Department of Chemistry, School of Engineering and Sciences, G.D. Goenka University, Gurugram, Haryana 122103, India
| | - Arunava Sengupta
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208 016, India
- Department of Chemistry, Techno India University, West Bengal, Kolkata 700 091, India
| | - Shashi Kant
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208 016, India
- Department of Chemistry, B. P. S. College Bhore, Gopalganj, Bihar 841426, India
| | - Francesc Lloret
- Departament de Química Inorgànica/Instituto de Ciencia Molecular (ICMOL), Universitat de València, Polígono de la Coma, s/n, 46980 Paterna, València, Spain
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Lee S, Lee GY, Kim CG, Chung TM, Park BK. Heteroleptic manganese compounds as potential precursors for manganese based thin films and nanomaterials. RSC Adv 2020; 10:29659-29667. [PMID: 35518259 PMCID: PMC9056172 DOI: 10.1039/d0ra05225f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Accepted: 08/03/2020] [Indexed: 12/15/2022] Open
Abstract
Heteroleptic manganese compounds, [Mn(tmhd)(TMEDA)Cl]2 (1), [Mn(tmhd)(dmamp)]2 (2), Mn2(tmhd)2(edpa)2(μ-THF) (3), [Mn(dmampea)(NEt2)]2 (4), and Mn(dmampea)(iPr-MeAMD) (5), were synthesized and characterized. Compound 5 was a volatile liquid. Structural analysis revealed that 1-4 were dimers. Compounds 1 and 3, 2, and 4 had distorted octahedral, distorted trigonal-bipyramidal, and distorted tetrahedral geometries around the Mn centers, respectively. Based on thermogravimetric analysis, the residues of 2 and 3 were expected to be MnO and Mn3O4, respectively. According to thermogravimetric analysis, 4 showed a higher residual value, whereas 5 exhibited a lower value than those expected for manganese nitrides.
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Affiliation(s)
- Sunju Lee
- Thin Film Materials Research Center, Korea Research Institute of Chemical Technology (KRICT) 141 Gajeong-Ro, Yuseong-Gu Daejeon 34114 Republic of Korea
| | - Ga Yeon Lee
- Thin Film Materials Research Center, Korea Research Institute of Chemical Technology (KRICT) 141 Gajeong-Ro, Yuseong-Gu Daejeon 34114 Republic of Korea
| | - Chang Gyoun Kim
- Thin Film Materials Research Center, Korea Research Institute of Chemical Technology (KRICT) 141 Gajeong-Ro, Yuseong-Gu Daejeon 34114 Republic of Korea
- Department of Chemical Convergence Materials, University of Science and Technology (UST) 217, Gajeong-Ro, Yuseong-Gu Deajeon 34113 Republic of Korea
| | - Taek-Mo Chung
- Thin Film Materials Research Center, Korea Research Institute of Chemical Technology (KRICT) 141 Gajeong-Ro, Yuseong-Gu Daejeon 34114 Republic of Korea
- Department of Chemical Convergence Materials, University of Science and Technology (UST) 217, Gajeong-Ro, Yuseong-Gu Deajeon 34113 Republic of Korea
| | - Bo Keun Park
- Thin Film Materials Research Center, Korea Research Institute of Chemical Technology (KRICT) 141 Gajeong-Ro, Yuseong-Gu Daejeon 34114 Republic of Korea
- Department of Chemical Convergence Materials, University of Science and Technology (UST) 217, Gajeong-Ro, Yuseong-Gu Deajeon 34113 Republic of Korea
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Frey ST, Ramirez HA, Kaur M, Jasinski JP. Crystal structure of a seven-coordinate manganese(II) complex with tris-(pyridin-2-ylmeth-yl)amine (TMPA). Acta Crystallogr E Crystallogr Commun 2018; 74:1075-1078. [PMID: 30116565 PMCID: PMC6073006 DOI: 10.1107/s2056989018009611] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Accepted: 07/04/2018] [Indexed: 03/11/2023]
Abstract
Structural analysis of (acetato-κ2O,O')(methanol-κO)[tris-(pyridin-2-ylmeth-yl)amine-κ4N,N',N'',N''']manganese(II) tetraphenyl-borate, [Mn(C2H3O2)(C18H18N4)(CH3OH)](C24H20B) or [Mn(TMPA)(Ac)(CH3OH)]BPh4 [TMPA = tris-(pyridin-2-ylmeth-yl)amine, Ac = acetate, BPh4 = tetra-phenyl-borate] by single-crystal X-ray diffraction reveals a complex cation with tetra-dentate coordination of the tripodal TMPA ligand, bidentate coordination of the Ac ligand and monodentate coordination of the methanol ligand to a single MnII center, balanced in charge by the presence of a tetra-phenyl-borate anion. The MnII complex has a distorted penta-gonal-bipyramidal geometry, in which the central amine nitro-gen and two pyridyl N atoms of the TMPA ligand, and two oxygen atoms of the acetate ligand occupy positions in the penta-gonal plane, while the third pyridyl nitro-gen of TMPA and the oxygen from the methanol ligand occupy the axial positions. Within the complex, the acetate O atoms participate in weak C-H⋯O hydrogen-bonding inter-actions with neighboring pyridyl moieties. In the crystal, complexes form dimers by pairs of O-H⋯O hydrogen bonds between the coordinated methanol of one complex and an acetate oxygen of the other, and weak π-stacking inter-actions between pyridine rings. Separate dimers then undergo additional π-stacking inter-actions between the pyridine rings of one moiety and either the pyridine or phenyl rings of another moiety that further stabilize the crystal.
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Affiliation(s)
- Steven T. Frey
- Department of Chemistry, Skidmore College, 815 North Broadway, Saratoga Springs, NY 12866, USA
| | - Hillary A. Ramirez
- Department of Chemistry, Skidmore College, 815 North Broadway, Saratoga Springs, NY 12866, USA
| | - Manpreet Kaur
- Department of Chemistry, Keene State College, 229 Main Street, Keene, NH 03435-2001, USA
| | - Jerry P. Jasinski
- Department of Chemistry, Keene State College, 229 Main Street, Keene, NH 03435-2001, USA
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Conte-Daban A, Ambike V, Guillot R, Delsuc N, Policar C, Hureau C. A Metallo Pro-Drug to Target Cu II in the Context of Alzheimer's Disease. Chemistry 2018; 24:5095-5099. [PMID: 29334419 PMCID: PMC6120673 DOI: 10.1002/chem.201706049] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Indexed: 01/28/2023]
Abstract
Alzheimer's disease and oxidative stress are connected. In the present communication, we report the use of a MnII -based superoxide dismutase (SOD) mimic ([MnII (L)]+ , 1+ ) as a pro-drug candidate to target CuII -associated events, namely, CuII -induced formation of reactive oxygen species (ROS) and modulation of the amyloid-β (Aβ) peptide aggregation. Complex 1+ is able to remove CuII from Aβ, stop ROS and prevent alteration of Aβ aggregation as would do the corresponding free ligand LH. Using 1+ instead of LH in further biological applications would have the double advantage to avoid the cell toxicity of LH and to benefit from its proved SOD-like activity.
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Affiliation(s)
- Amandine Conte-Daban
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 route de Narbonne, BP 44099 31077 Toulouse Cedex 4, France
- Université de Toulouse, UPS, INPT, 31077 Toulouse Cedex 4, France
| | - Vinita Ambike
- Institut de Chimie Moléculaire et des Matériaux d'Orsay, UMR CNRS 8182, Bâtiments 420, Université Paris-Sud 11, Université Paris-Saclay, Rue du doyen Georges Poitou, 91405 Orsay cedex, France
| | - Régis Guillot
- Institut de Chimie Moléculaire et des Matériaux d'Orsay, UMR CNRS 8182, Bâtiments 420, Université Paris-Sud 11, Université Paris-Saclay, Rue du doyen Georges Poitou, 91405 Orsay cedex, France
| | - Nicolas Delsuc
- Laboratoire des Biomolécules, Département de chimie, École normale supérieure, UPMC Univ. Paris 06, CNRS, PSL Research University, 24 rue Lhomond, 75005 Paris, France
- Sorbonne Universités, UPMC Univ. Paris 06, École normale supérieure, CNRS, Laboratoire des Biomolécules (LBM), 75005 Paris, France
| | - Clotilde Policar
- Laboratoire des Biomolécules, Département de chimie, École normale supérieure, UPMC Univ. Paris 06, CNRS, PSL Research University, 24 rue Lhomond, 75005 Paris, France
- Sorbonne Universités, UPMC Univ. Paris 06, École normale supérieure, CNRS, Laboratoire des Biomolécules (LBM), 75005 Paris, France
| | - Christelle Hureau
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 route de Narbonne, BP 44099 31077 Toulouse Cedex 4, France
- Université de Toulouse, UPS, INPT, 31077 Toulouse Cedex 4, France
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12
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Mathieu E, Bernard AS, Delsuc N, Quévrain E, Gazzah G, Lai B, Chain F, Langella P, Bachelet M, Masliah J, Seksik P, Policar C. A Cell-Penetrant Manganese Superoxide Dismutase (MnSOD) Mimic Is Able To Complement MnSOD and Exerts an Antiinflammatory Effect on Cellular and Animal Models of Inflammatory Bowel Diseases. Inorg Chem 2017; 56:2545-2555. [PMID: 28198622 DOI: 10.1021/acs.inorgchem.6b02695] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Inorganic complexes are increasingly used for biological and medicinal applications, and the question of the cell penetration and distribution of metallodrugs is key to understanding their biological activity. Oxidative stress is known to be involved in inflammation and in inflammatory bowel diseases for which antioxidative defenses are weakened. We report here the study of the manganese complex Mn1 mimicking superoxide dismutase (SOD), a protein involved in cell protection against oxidative stress, using an approach in inorganic cellular chemistry combining the investigation of Mn1 intracellular speciation using mass spectrometry and of its quantification and distribution using electron paramagnetic resonance and spatially resolved X-ray fluorescence with evaluation of its biological activity. More precisely, we have looked for and found the MS signature of Mn1 in cell lysates and quantified the overall manganese content. Intestinal epithelial cells activated by bacterial lipopolysaccharide were taken as a cellular model of oxidative stress and inflammation. DNBS-induced colitis in mice was used to investigate Mn1 activity in vivo. Mn1 exerts an intracellular antiinflammatory activity, remains at least partially coordinated, with diffuse distribution over the whole cell, and functionally complements mitochondrial MnSOD.
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Affiliation(s)
- Emilie Mathieu
- Département de Chimie, Ecole Normale Superieure, PSL Research University, UPMC Univ Paris 06, CNRS, Laboratoire des Biomolecules (LBM), 24 rue Lhomond, 75005 Paris, France
| | - Anne-Sophie Bernard
- Département de Chimie, Ecole Normale Superieure, PSL Research University, UPMC Univ Paris 06, CNRS, Laboratoire des Biomolecules (LBM), 24 rue Lhomond, 75005 Paris, France
| | - Nicolas Delsuc
- Département de Chimie, Ecole Normale Superieure, PSL Research University, UPMC Univ Paris 06, CNRS, Laboratoire des Biomolecules (LBM), 24 rue Lhomond, 75005 Paris, France
| | - Elodie Quévrain
- Département de Chimie, Ecole Normale Superieure, PSL Research University, UPMC Univ Paris 06, CNRS, Laboratoire des Biomolecules (LBM), 24 rue Lhomond, 75005 Paris, France
| | - Géraldine Gazzah
- Département de Chimie, Ecole Normale Superieure, PSL Research University, UPMC Univ Paris 06, CNRS, Laboratoire des Biomolecules (LBM), 24 rue Lhomond, 75005 Paris, France
| | - Barry Lai
- X-ray Science Division, Argonne National Laboratory (ANL) , Argonne, Illinois 60439, United States
| | - Florian Chain
- Commensal and Probiotics-Host Interactions Laboratory, Micalis Institute, INRA, AgroParisTech, Université Paris-Saclay, F-78350 Jouy-en-Josas, France
| | - Philippe Langella
- Commensal and Probiotics-Host Interactions Laboratory, Micalis Institute, INRA, AgroParisTech, Université Paris-Saclay, F-78350 Jouy-en-Josas, France
| | - Maria Bachelet
- Sorbonne Universites, UPMC Univ Paris 06 - Département de Chimie, Ecole Normale Superieure, PSL Research University - CNRS, INSERM, APHP, INRA, Laboratoire des Biomolecules (LBM), 27 rue de Chaligny, 75012 Paris, France.,Commensal and Probiotics-Host Interactions Laboratory, Micalis Institute, INRA, AgroParisTech, Université Paris-Saclay, F-78350 Jouy-en-Josas, France
| | - Joelle Masliah
- Département de Chimie, Ecole Normale Superieure, PSL Research University, UPMC Univ Paris 06, CNRS, Laboratoire des Biomolecules (LBM), 24 rue Lhomond, 75005 Paris, France.,Sorbonne Universites, UPMC Univ Paris 06 - Département de Chimie, Ecole Normale Superieure, PSL Research University - CNRS, INSERM, APHP, INRA, Laboratoire des Biomolecules (LBM), 27 rue de Chaligny, 75012 Paris, France
| | - Philippe Seksik
- Sorbonne Universites, UPMC Univ Paris 06 - Département de Chimie, Ecole Normale Superieure, PSL Research University - CNRS, INSERM, APHP, INRA, Laboratoire des Biomolecules (LBM), 27 rue de Chaligny, 75012 Paris, France.,Commensal and Probiotics-Host Interactions Laboratory, Micalis Institute, INRA, AgroParisTech, Université Paris-Saclay, F-78350 Jouy-en-Josas, France
| | - Clotilde Policar
- Département de Chimie, Ecole Normale Superieure, PSL Research University, UPMC Univ Paris 06, CNRS, Laboratoire des Biomolecules (LBM), 24 rue Lhomond, 75005 Paris, France
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Ching HV, Kenkel I, Delsuc N, Mathieu E, Ivanović-Burmazović I, Policar C. Bioinspired superoxide-dismutase mimics: The effects of functionalization with cationic polyarginine peptides. J Inorg Biochem 2016; 160:172-9. [DOI: 10.1016/j.jinorgbio.2016.01.025] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Revised: 12/27/2015] [Accepted: 01/25/2016] [Indexed: 10/22/2022]
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15
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Kose M, Goring P, Lucas P, Mckee V. Mono-, di- and tri-nuclear manganese(II) complexes derived from a quinquedentate ligand: Superoxide dismutase and catalase mimetic studies. Inorganica Chim Acta 2015. [DOI: 10.1016/j.ica.2015.07.010] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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16
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Ching HYV, Anxolabéhère-Mallart E, Colmer HE, Costentin C, Dorlet P, Jackson TA, Policar C, Robert M. Electrochemical formation and reactivity of a manganese peroxo complex: acid driven H2O2 generation vs. O–O bond cleavage. Chem Sci 2014. [DOI: 10.1039/c3sc53469c] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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17
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Matuz A, Giorgi M, Speier G, Kaizer J. Structural and functional comparison of manganese-, iron-, cobalt-, nickel-, and copper-containing biomimic quercetinase models. Polyhedron 2013. [DOI: 10.1016/j.poly.2013.07.005] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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18
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Lennartson A, McKenzie CJ. Oxidation of a dinuclear manganese(II) complex to an oxide-bridged dimanganese(IV) complex. Acta Crystallogr C 2012; 68:m347-52. [DOI: 10.1107/s0108270112043296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2012] [Accepted: 10/17/2012] [Indexed: 11/10/2022] Open
Abstract
Bis{μ-2-[bis(pyridin-2-ylmethyl)amino]acetato}bis[diaquamanganese(II)] bis(trifluoromethanesulfonate) monohydrate, [Mn2(C14H14N3O2)2(H2O)4](CF3O3S)2·H2O, (I), and bis{μ-3-[bis(pyridin-2-ylmethyl)amino]propionato}bis[aquamanganese(II)] bis(trifluoromethanesulfonate) dihydrate, [Mn2(C15H16N3O2)2(H2O)2](CF3O3S)2·2H2O, (II), form binuclear seven-coordinate complexes. Oxidation of (II) with ammonium hexanitratocerate(IV), (NH4)2[Ce(NO3)6], gave the oxide-bridged dimanganese(IV) complex di-μ-oxido-bis(bis{3-[bis(pyridin-2-ylmethyl)amino]propionato}manganese(IV)) bis[triaquatetranitratocerate(IV)], [Mn2O2(C15H16N3O2)2][Ce(NO3)4(H2O)3]2, (III). The manganese complexes in (II) and (III) sit on a site of \overline{1} symmetry.
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Volkman J, Nicholas KM. A synthetic quest for tris(imidazolyl) carboxylates and their metal complexes: active site models for quercetin 2,3-dioxygenases and other non-heme redox metalloenzymes. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.02.042] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Bernard AS, Giroud C, Ching HYV, Meunier A, Ambike V, Amatore C, Collignon MG, Lemaître F, Policar C. Evaluation of the anti-oxidant properties of a SOD-mimic Mn-complex in activated macrophages. Dalton Trans 2012; 41:6399-403. [DOI: 10.1039/c2dt12479c] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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21
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Pap JS, Kripli B, Váradi T, Giorgi M, Kaizer J, Speier G. Comparison of the SOD-like activity of hexacoordinate Mn(II), Fe(II) and Ni(II) complexes having isoindoline-based ligands. J Inorg Biochem 2011; 105:911-8. [DOI: 10.1016/j.jinorgbio.2011.01.016] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2010] [Revised: 01/11/2011] [Accepted: 01/31/2011] [Indexed: 11/29/2022]
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22
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Iranzo O. Manganese complexes displaying superoxide dismutase activity: A balance between different factors. Bioorg Chem 2011; 39:73-87. [DOI: 10.1016/j.bioorg.2011.02.001] [Citation(s) in RCA: 115] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2010] [Revised: 02/14/2011] [Accepted: 02/14/2011] [Indexed: 01/05/2023]
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Ghosh K, Tyagi N, Kumar P. Role of carboxamido nitrogen in mononuclear manganese complex: Superoxide scavenging activity and nuclease activity. INORG CHEM COMMUN 2010. [DOI: 10.1016/j.inoche.2009.12.028] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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24
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Gómez V, Corbella M, Font-Bardia M, Calvet T. A μ1,1- or μ1,3-carboxylate bridge makes the difference in the magnetic properties of dinuclear MnII compounds. Dalton Trans 2010; 39:11664-74. [DOI: 10.1039/c0dt00902d] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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25
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Preparation of a new 16-MC-4 structure type that captures Mn(II) in the central cavity. Inorganica Chim Acta 2009. [DOI: 10.1016/j.ica.2008.02.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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26
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Gätjens J, Mullins CS, Kampf JW, Thuéry P, Pecoraro VL. Corroborative cobalt and zinc model compounds of alpha-amino-beta-carboxymuconic-epsilon-semialdehyde decarboxylase (ACMSD). Dalton Trans 2008:51-62. [PMID: 19081971 DOI: 10.1039/b809453e] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
We have synthesised and characterised a series of new Co(II) complexes (1-4, 6, 7) and one new Zn(II) complex (5) employing N(3)- and N(3)O-donor ligands [biap: N,N-bis(2-ethyl-5-methyl-imidazol-4-ylmethyl)amino-propane, KBPZG: potassium N,N-bis(3,5-dimethylpyrazolylmethyl) glycinate, KBPZA: potassium N,N-bis(3,5-dimethylpyrazolylmethyl) alaninate, KB(i)PrPZG: potassium N,N-bis(3,5-di-iso-propylpyrazolylmethyl) glycinate, and KB((t)BuM)PZG: potassium N,N-bis(3-methyl-5-tert-butyl-pyrazolylmethyl)glycinate] as structural models of the metalloenzyme alpha-amino-beta-carboxymuconic-epsilon-semialdehyde decarboxylase (ACMSD). These complexes were characterised by several techniques including X-ray crystallographic analysis, X-band EPR, and mass spectrometry (ESI-MS). The crystal structures of 1, 2, 6,7 revealed that they exist as mononuclear Co(II) complexes with trigonal-bipyramidal geometry in the solid state. Compounds 3 and 5 form infinite polymeric chains of Co(II) or Zn(II) complexes, respectively, linked by the pendant carboxylate arms of the BPZG(-) ligand. By comparing the degree of distortion in the penta-coordinate complexes, defined by the Addison-parameter tau, with the value determined for the five-coordinate centres found in the active site of ACMSD, it could be seen that complexes 5 and 7 are very good matches for the geometry of the zinc(II) centre in monomer A of the native enzyme. All complexes could be seen as model compounds for the active site of the enzyme ACMSD, where the Co(II) complexes reflected the structural flexibility found in case of two histidine (His177 and His228) residues found in the active site of the enzyme.
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Affiliation(s)
- Jessica Gätjens
- University of Michigan, Department of Chemistry, Willard H. Dow Laboratories, 930 North University Ave, Ann Arbor, MI 48109, USA
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Scarpellini M, Gätjens J, Martin OJ, Kampf JW, Sherman SE, Pecoraro VL. Modeling the resting state of oxalate oxidase and oxalate decarboxylase enzymes. Inorg Chem 2008; 47:3584-93. [PMID: 18399627 DOI: 10.1021/ic701953g] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In view of the biological and commercial interest in models for Oxalate Decarboxylases (OxDC) and Oxalate Oxidases (OxOx), we have synthesized and characterized three new Mn (II) complexes ( 1- 3) employing N3O-donor amino-carboxylate ligands (TCMA, 1,4,7-triazacyclononane- N-acetic acid; K (i) Pr 2TCMA, potassium 1,4-diisopropyl-1,4,7-triazacyclononane- N-acetate; and KBPZG, potassium N,N-bis(3,5-dimethylpyrazolyl methyl)glycinate). These complexes were characterized by several techniques including X-ray crystallographic analysis, X-band electron paramagnetic resonance (EPR), electrospray ionization mass spectrometry (ESI-MS), and cyclic voltammetry. The crystal structures of 1 and 3 revealed that both form infinite polymeric chains of Mn (II) complexes linked by the pendant carboxylate arms of the TCMA (-) and the BPZG (-) ligands in a syn-antipattern. Complex 2 crystallizes as a mononuclear Mn (II) cation, six-coordinate in a distorted octahedral geometry. Although complexes 1 and 3 crystallize as polymeric chains, all compounds present the same N3O-donor set atoms around the metal center as observed in the crystallographically characterized OxDC and OxOx. Moreover, complex 2 also contains two water molecules coordinated to the Mn center as observed in the active site of OxDC and OxOx. ESI-MS spectrometry, combined with EPR, were useful techniques to establish that complexes 1- 3 are present as mononuclear Mn (II) species in solution. Finally, complexes 1- 3 are able to model the resting state active sites, with special attention focused on complex 2 which provides the first exact first coordination sphere ligand structural model for the resting states of both OxDC and OxOx.
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Affiliation(s)
- Marciela Scarpellini
- Willard H. Dow Laboratories, Department of Chemistry, University of Michigan, 930 North University, Ann Arbor, MI 48109, USA
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Moon D, Kim J, Oh M, Suh BJ, Lah MS. Synthesis and characterization of a bis-μ,η1-carboxylate-bridged dinuclear manganese(II) complex containing a tetradentate tripodal ligand, N-(benzimidazol-2-ylmethyl)iminodiacetic acid. Polyhedron 2008. [DOI: 10.1016/j.poly.2007.09.028] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Ivanović-Burmazović I. Catalytic dismutation vs. reversible binding of superoxide. ADVANCES IN INORGANIC CHEMISTRY 2008. [DOI: 10.1016/s0898-8838(08)00003-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Cisnetti F, Lefèvre AS, Guillot R, Lambert F, Blain G, Anxolabéhère-Mallart E, Policar C. A New Pentadentate Ligand Forms Both a Di- and a Mononuclear MnII Complex: Electrochemical, Spectroscopic and Superoxide Dismutase Activity Studies. Eur J Inorg Chem 2007. [DOI: 10.1002/ejic.200601236] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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31
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Synthesis, structure and magnetic properties of two μ-oxo and thiocyanato-bridged manganese(II)–mercury(II) coordination polymers. Inorganica Chim Acta 2007. [DOI: 10.1016/j.ica.2007.04.043] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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32
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Sen S, Mitra S, Luneau D, Salah El Fallah M, Ribas J. Synthesis, crystal structure and magnetic properties of two new manganese Schiff base complexes [Mn2(L1)2(NCS)2] and [Mn(L2)(N3)(H2O)] [{L1H=C13H10N2O2}; {L2H2=C19H22N2O4}]. Polyhedron 2006. [DOI: 10.1016/j.poly.2006.03.031] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Schepetkin I, Potapov A, Khlebnikov A, Korotkova E, Lukina A, Malovichko G, Kirpotina L, Quinn MT. Decomposition of reactive oxygen species by copper(II) bis(1-pyrazolyl)methane complexes. J Biol Inorg Chem 2006; 11:499-513. [PMID: 16680452 DOI: 10.1007/s00775-006-0101-1] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2005] [Accepted: 03/17/2006] [Indexed: 01/13/2023]
Abstract
Two bis(1-pyrazolyl)alkane ligands, bis(3,5-dimethyl-1-pyrazolyl)methane and bis(4-iodo-3,5-dimethyl-1-pyrazolyl)methane, and their copper(II) complexes, bis(3,5-dimethyl-1-pyrazolyl)methanedinitratocopper(II) [CuL1(NO3)2] and bis(4-iodo-3,5-dimethyl-1-pyrazolyl)methanedinitratocopper(II) [CuL2(NO3)2] x 2H2O, were prepared. Physiochemical properties of the copper(II) complexes were studied by spectroscopic (UV-vis, IR, EPR) techniques and cyclic voltammetry. Spectroscopic analysis revealed a 1:1 stoichiometry of ligand:copper(II) ion and a bidentate coordination mode for the nitrate ions in both of the complexes. According to experimental and theoretical ab initio data, the copper(II) ion is located in an octahedral hexacoordinated environment. Both complexes were able to catalyze the dismutation of superoxide anion (O2*-) (pH 7.5) and decomposition of H2O2 (pH 7.5) and peroxynitrite (pH 10.9). In addition, both complexes exhibited superoxide dismutase (SOD) like activity toward extracellular and intracellular reactive oxygen species produced by activated human neutrophils in whole blood. Thus, these complexes represent useful SOD mimetics with a broad range of antioxidant activity toward a variety of reactive oxidants.
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Affiliation(s)
- Igor Schepetkin
- Department of Veterinary Molecular Biology, Montana State University, Bozeman, MT 59717, USA
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A 3D Manganese Coordination Polymer [Mn3(IMDC)2(H2O)4] Constructed from [Mn2(IMDC)2(H2O)2] Layers and [Mn(H2O)2] Pillars (IMDC = 4,5-imidazoledicarboxylate). Eur J Inorg Chem 2006. [DOI: 10.1002/ejic.200500883] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Durot S, Policar C, Cisnetti F, Lambert F, Renault JP, Pelosi G, Blain G, Korri-Youssoufi H, Mahy JP. Series of Mn Complexes Based onN-Centered Ligands and Superoxide - Reactivity in an Anhydrous Medium and SOD-Like Activity in an Aqueous Medium Correlated to MnII/MnIII Redox Potentials. Eur J Inorg Chem 2005. [DOI: 10.1002/ejic.200400835] [Citation(s) in RCA: 89] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Durot S, Lambert F, Renault JP, Policar C. A Pulse Radiolysis Study of Catalytic Superoxide Radical Dismutation by a Manganese(II) Complex with an N-Tripodal Ligand. Eur J Inorg Chem 2005. [DOI: 10.1002/ejic.200400834] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Hydrothermal synthesis and crystal structure of a novel 2-D polymeric manganese (II) complex with mixed ligands. TRANSIT METAL CHEM 2005. [DOI: 10.1007/s11243-004-4578-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Bellot F, Hardré R, Pelosi G, Thérisod M, Policar C. Superoxide dismutase-like activity of cobalt(ii) complexes based on a sugar platform. Chem Commun (Camb) 2005:5414-6. [PMID: 16261231 DOI: 10.1039/b508893c] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A SOD-like activity evaluated by a modified McCord-Fridovich test was evidenced for two Co(II) complexes built from "glycoligands" using a sugar platform derived from d-galactose and D-galactal and functionalized by three 2-picolyl groups.
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Affiliation(s)
- François Bellot
- Laboratoire de Chimie Bio-organique et Bio-inorganique, UMR8124, Bâtiment 420, Université Paris XI, F-91405 Orsay Cedex, France
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Li QX, Luo QH, Li YZ, Pan ZQ, Shen MC. Studies on Manganese(II) Complexes ofN-Benzimidazole-Functionalized 1,4,7-Triazacyclononane: Crystal Structures, Properties and Combined Superoxide Dismutase and Catalase Functions. Eur J Inorg Chem 2004. [DOI: 10.1002/ejic.200400157] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Baffert C, Romero I, Pécaut J, Llobet A, Deronzier A, Collomb MN. Synthesis and structural characterization of five-, six-, and seven-coordinate mononuclear manganese(II) complexes with N-tridentate ligands. Inorganica Chim Acta 2004. [DOI: 10.1016/j.ica.2004.05.023] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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