1
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Mladenović M, Astolfi R, Tomašević N, Matić S, Božović M, Sapienza F, Ragno R. In Vitro Antioxidant and In Vivo Antigenotoxic Features of a Series of 61 Essential Oils and Quantitative Composition-Activity Relationships Modeled through Machine Learning Algorithms. Antioxidants (Basel) 2023; 12:1815. [PMID: 37891894 PMCID: PMC10604248 DOI: 10.3390/antiox12101815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 09/25/2023] [Accepted: 09/26/2023] [Indexed: 10/29/2023] Open
Abstract
The antioxidant activity of essential oils (EOs) is an important and frequently studied property, yet it is not sufficiently understood in terms of the contribution of EOs mixtures' constituents and biological properties. In this study, a series of 61 commercial EOs were first evaluated as antioxidants in vitro, following as closely as possible the cellular pathways of reactive oxygen species (ROS) generation. Hence, EOs were assessed for the ability either to chelate metal ions, thus interfering with ROS generation within the respiratory chain, or to neutralize 2,2-diphenyl-1-picrylhydrazyl (DPPH•) and lipid peroxide radicals (LOO•), thereby halting lipid peroxidation, as well as to neutralize 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid cation radicals (ABTS•+) and hydroxyl radicals (OH•), thereby preventing the ROS species from damaging DNA nucleotides. Showing noteworthy potencies to neutralize all of the radicals at the ng/mL level, the active EOs were also characterized as protectors of DNA double strands from damage induced by peroxyl radicals (ROO•), emerging from 2,2'-azobis-2-methyl-propanimidamide (AAPH) as a source, and OH•, indicating some genome protectivity and antigenotoxicity effectiveness in vitro. The chemical compositions of the EOs associated with the obtained activities were then analyzed by means of machine learning (ML) classification algorithms to generate quantitative composition-activity relationships (QCARs) models (models published in the AI4EssOil database available online). The QCARs models enabled us to highlight the key features (EOSs' chemical compounds) for exerting the redox potencies and to define the partial dependencies of the features, viz. percentages in the mixture required to exert a given potency. The ML-based models explained either the positive or negative contribution of the most important chemical components: limonene, linalool, carvacrol, eucalyptol, α-pinene, thymol, caryophyllene, p-cymene, eugenol, and chrysanthone. Finally, the most potent EOs in vitro, Ylang-ylang (Cananga odorata (Lam.)) and Ceylon cinnamon peel (Cinnamomum verum J. Presl), were promptly administered in vivo to evaluate the rescue ability against redox damage caused by CCl4, thereby verifying their antioxidant and antigenotoxic properties either in the liver or in the kidney.
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Affiliation(s)
- Milan Mladenović
- Kragujevac Center for Computational Biochemistry, Department of Chemistry, Faculty of Science, University of Kragujevac, Radoja Domanovića 12, P.O. Box 60, 34000 Kragujevac, Serbia;
| | - Roberta Astolfi
- Rome Center for Molecular Design, Department of Drug Chemistry and Technology, Faculty of Pharmacy and Medicine, Rome Sapienza University, P. le A. Moro 5, 00185 Rome, Italy; (R.A.); (F.S.)
| | - Nevena Tomašević
- Kragujevac Center for Computational Biochemistry, Department of Chemistry, Faculty of Science, University of Kragujevac, Radoja Domanovića 12, P.O. Box 60, 34000 Kragujevac, Serbia;
| | - Sanja Matić
- Department of Science, Institute for Information Technologies Kragujevac, University of Kragujevac, Jovana Cvijića bb, 34000 Kragujevac, Serbia;
| | - Mijat Božović
- Faculty of Science and Mathematics, University of Montenegro, Džordža Vašingtona bb, 81000 Podgorica, Montenegro;
| | - Filippo Sapienza
- Rome Center for Molecular Design, Department of Drug Chemistry and Technology, Faculty of Pharmacy and Medicine, Rome Sapienza University, P. le A. Moro 5, 00185 Rome, Italy; (R.A.); (F.S.)
| | - Rino Ragno
- Rome Center for Molecular Design, Department of Drug Chemistry and Technology, Faculty of Pharmacy and Medicine, Rome Sapienza University, P. le A. Moro 5, 00185 Rome, Italy; (R.A.); (F.S.)
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2
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Thara C, Korah BK, John BK, Mathew B. One-Pot Synthesized Multifunctional Carbon Nitride Dots for Fluorescent Sensing, Bioimaging, and Selective Cytotoxic Effect on Cancer Cells. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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3
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Banerjee S, Chanakira MN, Hall J, Kerkan A, Dasgupta S, Martin DW. A review on bacterial redox dependent iron transporters and their evolutionary relationship. J Inorg Biochem 2022; 229:111721. [PMID: 35033753 DOI: 10.1016/j.jinorgbio.2022.111721] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Revised: 01/04/2022] [Accepted: 01/06/2022] [Indexed: 02/05/2023]
Abstract
Iron is an essential yet toxic micronutrient and its transport across biological membranes is tightly regulated in all living organisms. One such iron transporter, the Ftr-type permeases, is found in both eukaryotic and prokaryotic cells. These Ftr-type transporters are required for iron transport, predicted to form α-helical transmembrane structures, and conserve two ArgGluxxGlu (x = any amino acid) motifs. In the yeast Ftr transporter (Ftr1p), a ferroxidase (Fet3p) is required for iron transport in an oxidation coupled transport step. None of the bacterial Ftr-type transporters (EfeU and FetM from E. coli; cFtr from Campylobacter jejuni; FtrC from Brucella, Bordetella, and Burkholderia spp.) contain a ferroxidase protein. Bioinformatics report predicted periplasmic EfeO and FtrB (from the EfeUOB and FtrABCD systems) as novel cupredoxins. The Cu2+ binding and the ferrous oxidation properties of these proteins are uncharacterized and the other two bacterial Ftr-systems are expressed without any ferroxidase/cupredoxin, leading to controversy about the mode of function of these transporters. Here, we review published data on Ftr-type transporters to gain insight into their functional diversity. Based on original bioinformatics data presented here evolutionary relations between these systems are presented.
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Affiliation(s)
- Sambuddha Banerjee
- Department of Chemistry, East Carolina University, Greenville, NC 27858, USA.
| | - Mina N Chanakira
- Department of Chemistry, East Carolina University, Greenville, NC 27858, USA
| | - Jonathan Hall
- Department of Chemistry, East Carolina University, Greenville, NC 27858, USA
| | - Alexa Kerkan
- Department of Chemistry, East Carolina University, Greenville, NC 27858, USA
| | - Saumya Dasgupta
- Department of Chemistry, Amity Institute of Applied Sciences, Amity University Kolkata, WB 700135, India
| | - Daniel W Martin
- Department of Microbiology and Immunology, Brody School of Medicine, East Carolina University, Greenville, NC 27834, USA
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4
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Śliwa EI, Nesterov DS, Kirillova MV, Kłak J, Kirillov AM, Smoleński P. A 3D MOF based on Adamantoid Tetracopper(II) and Aminophosphine Oxide Cages: Structural Features and Magnetic and Catalytic Properties. Inorg Chem 2021; 60:9631-9644. [PMID: 34121384 PMCID: PMC8277165 DOI: 10.1021/acs.inorgchem.1c00868] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
This work describes an unexpected generation of a new 3D metal-organic framework (MOF), [Cu4(μ-Cl)6(μ4-O)Cu(OH)2(μ-PTA═O)4]n·2nCl-EtOH·2.5nH2O, from copper(II) chloride and 1,3,5-triaza-7-phosphaadamantane 7-oxide (PTA═O). The obtained product is composed of diamandoid tetracopper(II) [Cu4(μ-Cl)6(μ4-O)] cages and monocopper(II) [Cu(OH)2] units that are assembled, via the diamandoid μ-PTA═O linkers, into an intricate 3D net with an nbo topology. Magnetic susceptibility measurements on this MOF in the temperature range of 1.8-300 K reveal a ferromagnetic interaction (J = +20 cm-1) between the neighboring copper(II) ions. Single-point DFT calculations disclose a strong delocalization of the spin density over the tetranuclear unit. The magnitude of exchange coupling, predicted from the broken-symmetry DFT studies, is in good agreement with the experimental data. This copper(II) compound also acts as an active catalyst for the mild oxidation and carboxylation of alkanes. The present study provides a unique example of an MOF that is assembled from two different types of adamantoid Cu4 and PTA═O cages, thus contributing to widening a diversity of functional metal-organic frameworks.
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Affiliation(s)
- Ewelina I Śliwa
- Faculty of Chemistry, University of Wrocław, F. Joliot-Curie 14, 50-383 Wrocław, Poland
| | - Dmytro S Nesterov
- Centro de Química Estrutural and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal
| | - Marina V Kirillova
- Centro de Química Estrutural and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal
| | - Julia Kłak
- Faculty of Chemistry, University of Wrocław, F. Joliot-Curie 14, 50-383 Wrocław, Poland
| | - Alexander M Kirillov
- Centro de Química Estrutural and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal.,Research Institute of Chemistry, Peoples' Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya st., Moscow 117198, Russian Federation
| | - Piotr Smoleński
- Faculty of Chemistry, University of Wrocław, F. Joliot-Curie 14, 50-383 Wrocław, Poland
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5
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Shamir D, Elias I, Albo Y, Meyerstein D, Burg A. ORMOSIL-entrapped copper complex as electrocatalyst for the heterogeneous de-chlorination of alkyl halides. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2019.119225] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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6
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Shamir D, Meyerstein D, Zilbermann I, Burg A, Albo Y, Shames AI, Vainer R, Borojovich EJ, Yardeni G, Kornweitz H, Maimon E. Copper(II) catalyses the reduction of perchlorate by both formaldehyde and by dihydrogen in aqueous solutions. J COORD CHEM 2018. [DOI: 10.1080/00958972.2018.1506114] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Dror Shamir
- Chemistry Department, Nuclear Research Centre Negev, Beer-Sheva, Israel
| | - Dan Meyerstein
- Chemical Sciences Department, Ariel University, Ariel, Israel
- Chemistry Department, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Israel Zilbermann
- Chemistry Department, Nuclear Research Centre Negev, Beer-Sheva, Israel
- Chemistry Department, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Ariela Burg
- Chemical Engineering Department, The Sami Shamoon College of Engineering, Beer-Sheva, Israel
| | - Yael Albo
- Department of Chemical Engineering, Biotechnology and Materials, Ariel University, Ariel, Israel
| | | | - Radion Vainer
- Chemistry Department, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | | | - Guy Yardeni
- Chemistry Department, Nuclear Research Centre Negev, Beer-Sheva, Israel
| | - Haya Kornweitz
- Chemical Sciences Department, Ariel University, Ariel, Israel
| | - Eric Maimon
- Chemistry Department, Nuclear Research Centre Negev, Beer-Sheva, Israel
- Chemistry Department, Ben-Gurion University of the Negev, Beer-Sheva, Israel
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7
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Cheignon C, Jones M, Atrián-Blasco E, Kieffer I, Faller P, Collin F, Hureau C. Identification of key structural features of the elusive Cu-Aβ complex that generates ROS in Alzheimer's disease. Chem Sci 2017; 8:5107-5118. [PMID: 28970897 PMCID: PMC5613283 DOI: 10.1039/c7sc00809k] [Citation(s) in RCA: 92] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Accepted: 04/29/2017] [Indexed: 12/16/2022] Open
Abstract
Oxidative stress is linked to the etiology of Alzheimer's disease (AD), the most common cause of dementia in the elderly. Redox active metal ions such as copper catalyze the production of Reactive Oxygen Species (ROS) when bound to the amyloid-β (Aβ) peptide encountered in AD. We propose that this reaction proceeds through a low-populated Cu-Aβ state, denoted the "catalytic in-between state" (CIBS), which is in equilibrium with the resting state (RS) of both Cu(i)-Aβ and Cu(ii)-Aβ. The nature of this CIBS is investigated in the present work. We report the use of complementary spectroscopic methods (X-ray absorption spectroscopy, EPR and NMR) to characterize the binding of Cu to a wide series of modified peptides in the RS. ROS production by the resulting Cu-peptide complexes was evaluated using fluorescence and UV-vis based methods and led to the identification of the amino acid residues involved in the Cu-Aβ CIBS species. In addition, a possible mechanism by which the ROS are produced is also proposed. These two main results are expected to affect the current vision of the ROS production mechanism by Cu-Aβ but also in other diseases involving amyloidogenic peptides with weakly structured copper binding sites.
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Affiliation(s)
- Clémence Cheignon
- LCC (Laboratoire de Chimie de Coordination) , CNRS UPR 8241 , 205 route de Narbonne , 31062 Toulouse Cedex 09 , France . ;
- Université de Toulouse , UPS , INPT , 31077 Toulouse , France
- UMR 152 Pharma Dev , Université de Toulouse , IRD , UPS , France
| | - Megan Jones
- LCC (Laboratoire de Chimie de Coordination) , CNRS UPR 8241 , 205 route de Narbonne , 31062 Toulouse Cedex 09 , France . ;
- Université de Toulouse , UPS , INPT , 31077 Toulouse , France
| | - Elena Atrián-Blasco
- LCC (Laboratoire de Chimie de Coordination) , CNRS UPR 8241 , 205 route de Narbonne , 31062 Toulouse Cedex 09 , France . ;
- Université de Toulouse , UPS , INPT , 31077 Toulouse , France
| | - Isabelle Kieffer
- Observatoire des Sciences de l'Univers de Grenoble (OSUG) , CNRS UMS 832 , 414 Rue de la Piscine , 38400 Saint Martin d'Hères , France
- BM30B/FAME , ESRF , The European Synchrotron , 71 Avenue des Martyrs , 38000 Grenoble , France
| | - Peter Faller
- LCC (Laboratoire de Chimie de Coordination) , CNRS UPR 8241 , 205 route de Narbonne , 31062 Toulouse Cedex 09 , France . ;
- Université de Toulouse , UPS , INPT , 31077 Toulouse , France
| | - Fabrice Collin
- LCC (Laboratoire de Chimie de Coordination) , CNRS UPR 8241 , 205 route de Narbonne , 31062 Toulouse Cedex 09 , France . ;
- Université de Toulouse , UPS , INPT , 31077 Toulouse , France
- UMR 152 Pharma Dev , Université de Toulouse , IRD , UPS , France
| | - Christelle Hureau
- LCC (Laboratoire de Chimie de Coordination) , CNRS UPR 8241 , 205 route de Narbonne , 31062 Toulouse Cedex 09 , France . ;
- Université de Toulouse , UPS , INPT , 31077 Toulouse , France
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8
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Pino-Chamorro JÁ, Laricheva YA, Guillamón E, Fernández-Trujillo MJ, Algarra AG, Gushchin AL, Abramov PA, Bustelo E, Llusar R, Sokolov MN, Basallote MG. Kinetics Aspects of the Reversible Assembly of Copper in Heterometallic Mo 3CuS 4 Clusters with 4,4'-Di-tert-butyl-2,2'-bipyridine. Inorg Chem 2016; 55:9912-9922. [PMID: 27673370 DOI: 10.1021/acs.inorgchem.6b01878] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Treatment of the triangular [Mo3S4Cl3(dbbpy)3]Cl cluster ([1]Cl) with CuCl produces a novel tetrametallic cuboidal cluster [Mo3(CuCl)S4Cl3(dbbpy)3][CuCl2] ([2][CuCl2]), whose crystal structure was determined by X-ray diffraction (dbbpy = 4,4'-di-tert-butyl-2,2'-bipyridine). This species, which contains two distinct types of Cu(I), is the first example of a diimine-functionalized heterometallic M3M'S4 cluster. Kinetics studies on both the formation of the cubane from the parent trinuclear cluster and its dissociation after treatment with halides, supported by NMR, electrospray ionization mass spectrometry, cyclic voltammetry, and density functional theory calculations, are provided. On the one hand, the results indicate that addition of Cu(I) to [1]+ is so fast that its kinetics can be monitored only by cryo-stopped flow at -85 °C. On the other hand, the release of the CuCl unit in [2]+ is also a fast process, which is unexpectedly assisted by the CuCl2- counteranion in a process triggered by halide (X-) anions. The whole set of results provide a detailed picture of the assembly-disassembly processes in this kind of cluster. Interconversion between trinuclear M3S4 clusters and their heterometallic M3M'S4 derivatives can be a fast process occurring readily under the conditions employed during reactivity and catalytic studies, so their occurrence is a possibility that must be taken into account in future studies.
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Affiliation(s)
- Jose Ángel Pino-Chamorro
- Departamento de Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica, Facultad de Ciencias, and Instituto de Biomoléculas, INBIO, Universidad de Cádiz , Avda. República Saharahui s/n, Puerto Real, 11510 Cádiz, Spain
| | - Yuliya A Laricheva
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences , 630090 Novosibirsk, Russia
| | - Eva Guillamón
- Dept. de Química Física i Analítica, Universitat Jaume I , Av. Sos Baynat s/n, 12071 Castelló, Spain
| | - M Jesús Fernández-Trujillo
- Departamento de Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica, Facultad de Ciencias, and Instituto de Biomoléculas, INBIO, Universidad de Cádiz , Avda. República Saharahui s/n, Puerto Real, 11510 Cádiz, Spain
| | - Andrés G Algarra
- Departamento de Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica, Facultad de Ciencias, and Instituto de Biomoléculas, INBIO, Universidad de Cádiz , Avda. República Saharahui s/n, Puerto Real, 11510 Cádiz, Spain
| | - Artem L Gushchin
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences , 630090 Novosibirsk, Russia.,Dept. de Química Física i Analítica, Universitat Jaume I , Av. Sos Baynat s/n, 12071 Castelló, Spain.,Novosibirsk State University , 630090 Novosibirsk, Russia
| | - Pavel A Abramov
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences , 630090 Novosibirsk, Russia.,Dept. de Química Física i Analítica, Universitat Jaume I , Av. Sos Baynat s/n, 12071 Castelló, Spain.,Novosibirsk State University , 630090 Novosibirsk, Russia
| | - Emilio Bustelo
- Departamento de Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica, Facultad de Ciencias, and Instituto de Biomoléculas, INBIO, Universidad de Cádiz , Avda. República Saharahui s/n, Puerto Real, 11510 Cádiz, Spain
| | - Rosa Llusar
- Dept. de Química Física i Analítica, Universitat Jaume I , Av. Sos Baynat s/n, 12071 Castelló, Spain
| | - Maxim N Sokolov
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences , 630090 Novosibirsk, Russia.,Novosibirsk State University , 630090 Novosibirsk, Russia
| | - Manuel G Basallote
- Departamento de Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica, Facultad de Ciencias, and Instituto de Biomoléculas, INBIO, Universidad de Cádiz , Avda. República Saharahui s/n, Puerto Real, 11510 Cádiz, Spain
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9
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Reybier K, Ayala S, Alies B, Rodrigues JV, Bustos Rodriguez S, La Penna G, Collin F, Gomes CM, Hureau C, Faller P. Free Superoxide is an Intermediate in the Production of H2O2 by Copper(I)-Aβ Peptide and O2. Angew Chem Int Ed Engl 2015; 55:1085-9. [PMID: 26629876 DOI: 10.1002/anie.201508597] [Citation(s) in RCA: 78] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Indexed: 11/06/2022]
Abstract
Oxidative stress is considered as an important factor and an early event in the etiology of Alzheimer's disease (AD). Cu bound to the peptide amyloid-β (Aβ) is found in AD brains, and Cu-Aβ could contribute to this oxidative stress, as it is able to produce in vitro H2O2 and HO˙ in the presence of oxygen and biological reducing agents such as ascorbate. The mechanism of Cu-Aβ-catalyzed H2O2 production is however not known, although it was proposed that H2O2 is directly formed from O2 via a 2-electron process. Here, we implement an electrochemical setup and use the specificity of superoxide dismutase-1 (SOD1) to show, for the first time, that H2O2 production by Cu-Aβ in the presence of ascorbate occurs mainly via a free O2˙(-) intermediate. This finding radically changes the view on the catalytic mechanism of H2O2 production by Cu-Aβ, and opens the possibility that Cu-Aβ-catalyzed O2˙(-) contributes to oxidative stress in AD, and hence may be of interest.
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Affiliation(s)
- Karine Reybier
- University of Toulouse, UPS; UMR 152 PHARMA-DEV, 118 route de Narbonne, 31062, Toulouse cedex 9, France. .,IRD, UMR 152, 31062, Toulouse cedex 9, France.
| | - Sara Ayala
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 route de Narbonne, BP 44099, 31077, Toulouse Cedex 4, France.,University of Toulouse, UPS, INPT, 31077, Toulouse Cedex 4, France
| | - Bruno Alies
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 route de Narbonne, BP 44099, 31077, Toulouse Cedex 4, France.,University of Toulouse, UPS, INPT, 31077, Toulouse Cedex 4, France
| | - João V Rodrigues
- Instituto Tecnologia Química e Biológica, Universidade Nova de Lisboa, Oeiras, Portugal.,Harvard University, Department of Chemistry and Chemical Biology, Cambridge, MA, USA
| | - Susana Bustos Rodriguez
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 route de Narbonne, BP 44099, 31077, Toulouse Cedex 4, France.,University of Toulouse, UPS, INPT, 31077, Toulouse Cedex 4, France
| | - Giovanni La Penna
- CNR - National Research Council of Italy, ICCOM - Institute for Chemistry of Organo-Metallic Compounds, via Madonna del Piano 10, 50019 Sesto Fiorentino, Firenze, Italy
| | - Fabrice Collin
- University of Toulouse, UPS; UMR 152 PHARMA-DEV, 118 route de Narbonne, 31062, Toulouse cedex 9, France.,IRD, UMR 152, 31062, Toulouse cedex 9, France.,CNRS, LCC (Laboratoire de Chimie de Coordination), 205 route de Narbonne, BP 44099, 31077, Toulouse Cedex 4, France.,University of Toulouse, UPS, INPT, 31077, Toulouse Cedex 4, France
| | - Cláudio M Gomes
- Instituto Tecnologia Química e Biológica, Universidade Nova de Lisboa, Oeiras, Portugal.,Faculdade de Ciências, Biosystems and Integrative Sciences Institute, Department of Chemistry and Biochemistry, Universidade de Lisboa, Campo Grande, Lisboa, Portugal
| | - Christelle Hureau
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 route de Narbonne, BP 44099, 31077, Toulouse Cedex 4, France.,University of Toulouse, UPS, INPT, 31077, Toulouse Cedex 4, France
| | - Peter Faller
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 route de Narbonne, BP 44099, 31077, Toulouse Cedex 4, France. .,University of Toulouse, UPS, INPT, 31077, Toulouse Cedex 4, France. .,Institute de Chimie (UMR 7177), 4 rue B. Pascal, 67081, Strasbourg, France.
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10
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Reybier K, Ayala S, Alies B, Rodrigues JV, Bustos Rodriguez S, La Penna G, Collin F, Gomes CM, Hureau C, Faller P. Free Superoxide is an Intermediate in the Production of H
2
O
2
by Copper(I)‐Aβ Peptide and O
2. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201508597] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Karine Reybier
- University of Toulouse, UPS; UMR 152 PHARMA-DEV 118 route de Narbonne 31062 Toulouse cedex 9 France
- IRD, UMR 152 31062 Toulouse cedex 9 France
| | - Sara Ayala
- CNRS, LCC (Laboratoire de Chimie de Coordination) 205 route de Narbonne, BP 44099 31077 Toulouse Cedex 4 France
- University of Toulouse, UPS, INPT 31077 Toulouse Cedex 4 France
| | - Bruno Alies
- CNRS, LCC (Laboratoire de Chimie de Coordination) 205 route de Narbonne, BP 44099 31077 Toulouse Cedex 4 France
- University of Toulouse, UPS, INPT 31077 Toulouse Cedex 4 France
| | - João V. Rodrigues
- Instituto Tecnologia Química e Biológica Universidade Nova de Lisboa Oeiras Portugal
- Harvard University Department of Chemistry and Chemical Biology Cambridge MA USA
| | - Susana Bustos Rodriguez
- CNRS, LCC (Laboratoire de Chimie de Coordination) 205 route de Narbonne, BP 44099 31077 Toulouse Cedex 4 France
- University of Toulouse, UPS, INPT 31077 Toulouse Cedex 4 France
| | - Giovanni La Penna
- CNR – National Research Council of Italy ICCOM – Institute for Chemistry of Organo-Metallic Compounds via Madonna del Piano 10 50019 Sesto Fiorentino Firenze Italy
| | - Fabrice Collin
- University of Toulouse, UPS; UMR 152 PHARMA-DEV 118 route de Narbonne 31062 Toulouse cedex 9 France
- IRD, UMR 152 31062 Toulouse cedex 9 France
- CNRS, LCC (Laboratoire de Chimie de Coordination) 205 route de Narbonne, BP 44099 31077 Toulouse Cedex 4 France
- University of Toulouse, UPS, INPT 31077 Toulouse Cedex 4 France
| | - Cláudio M. Gomes
- Instituto Tecnologia Química e Biológica Universidade Nova de Lisboa Oeiras Portugal
- Faculdade de Ciências, Biosystems and Integrative Sciences Institute Department of Chemistry and Biochemistry Universidade de Lisboa, Campo Grande Lisboa Portugal
| | - Christelle Hureau
- CNRS, LCC (Laboratoire de Chimie de Coordination) 205 route de Narbonne, BP 44099 31077 Toulouse Cedex 4 France
- University of Toulouse, UPS, INPT 31077 Toulouse Cedex 4 France
| | - Peter Faller
- CNRS, LCC (Laboratoire de Chimie de Coordination) 205 route de Narbonne, BP 44099 31077 Toulouse Cedex 4 France
- University of Toulouse, UPS, INPT 31077 Toulouse Cedex 4 France
- Institute de Chimie (UMR 7177) 4 rue B. Pascal 67081 Strasbourg France
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11
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Gromov OI, Golubeva EN, Zhidomirov GM, Mel’nikov MY. Compounds with the copper(II)-carbon bond: EPR spectroscopy and quantum chemistry. DOKLADY PHYSICAL CHEMISTRY 2013. [DOI: 10.1134/s0012501613050011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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12
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Burg A, Wolfer Y, Kornweitz H, Shenar-Jackson L, Masarwa A, Meyerstein D. The Cu(I) catalyzed Meerwein reaction in aqueous solutions proceeds via a radical mechanism. The effect of several ligands. Dalton Trans 2013; 42:4985-93. [PMID: 23389299 DOI: 10.1039/c3dt32573c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The effect of the ligands 2,5,8,11-tetramethyl-2,5,8,11-tetraaza-dodecane and fumarate on the mechanism and kinetics of the Cu(I) catalyzed Meerwein reaction was studied. The results point out that initially the Cu(I) ion binds to the aromatic ring with the diazo substituent. This reaction is followed by a redox process involving N2 loss and the formation of an aryl radical, R˙. The following kinetics depends on the nature of the ligand, its effect on the redox potential and the steric hindrance it induces on the central copper ion. Clearly the ligand 2,5,8,11-tetramethyl-2,5,8,11-tetraaza-dodecane does not form an optimal catalyst with Cu(I) while it does for the Ullmann reaction.
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Affiliation(s)
- Ariela Burg
- Chemical Engineering Department, Sami Shamoon College, Beer-Sheva, Israel.
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13
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Golubeva EN, Zubanova EM, Zhidomirov GM. The nature of Cu-C bond and copper oxidation state in chloroorganocuprates [CuClnCH3]2−n. J PHYS ORG CHEM 2013. [DOI: 10.1002/poc.3093] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Elena N. Golubeva
- Chemistry Department; Lomonosov Moscow State University; Leninskie Gory 1-3; Moscow; Russia
| | - Ekaterina M. Zubanova
- Chemistry Department; Lomonosov Moscow State University; Leninskie Gory 1-3; Moscow; Russia
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