1
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Savva L, Platts JA. Computational investigation of copper-mediated conformational changes in α-synuclein dimer. Phys Chem Chem Phys 2024; 26:2926-2935. [PMID: 38193190 DOI: 10.1039/d3cp04697d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2024]
Abstract
We report molecular dynamics simulation of dimers of α-synuclein, the peptide closely associated with onset of Parkinson's disease, both as metal-free dimer and with inter-chain bridging provided by Cu(II) ions. Our investigation reveals that the presence of copper-induced inter-chain bridging not only stabilizes α-synuclein dimers, but also leads to enhanced β-sheet formation at critical regions within the N-terminal and NAC regions of the protein. These contacts are larger and longer-lived in the presence of copper, and as a result each peptide chain is more extended and less flexible than in the metal-free dimer. The persistence of these inter-peptide contacts underscores their significance in stabilising the dimers, potentially influencing the aggregation pathway. Moreover, the increased flexibility in the two termini, as well as the absence of persistent contacts in the metal-free dimer, correlates with the presence of amorphous aggregates. This phenomenon is known to mitigate fibrillation, while their absence in the metal-bound dimer suggests an increased propensity to form fibrils in the presence of copper ions.
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Affiliation(s)
- Loizos Savva
- School of Chemistry, Cardiff University, Park Place, Cardiff CF10 3AT, UK.
| | - James A Platts
- School of Chemistry, Cardiff University, Park Place, Cardiff CF10 3AT, UK.
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2
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Kola A, Nencioni F, Valensin D. Bioinorganic Chemistry of Micronutrients Related to Alzheimer's and Parkinson's Diseases. Molecules 2023; 28:5467. [PMID: 37513339 PMCID: PMC10385134 DOI: 10.3390/molecules28145467] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 07/10/2023] [Accepted: 07/13/2023] [Indexed: 07/30/2023] Open
Abstract
Metal ions are fundamental to guarantee the regular physiological activity of the human organism. Similarly, vitamins play a key role in many biological functions of the metabolism, among which are coenzymes, redox mediators, and antioxidants. Due to their importance in the human organism, both metals and vitamins have been extensively studied for their involvement in neurodegenerative diseases (NDs). However, the full potential of the interaction between vitamins and metal ions has not been fully explored by researchers yet, and further investigation on this topic is needed. The aim of this review is to provide an overview of the scientific literature on the implications of vitamins and selected metal ions in two of the most common neurodegenerative diseases, Alzheimer's and Parkinson's disease. Furthermore, vitamin-metal ion interactions are discussed in detail focusing on their bioinorganic chemistry, with the perspective of arousing more interest in this fascinating bioinorganic field.
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Affiliation(s)
| | | | - Daniela Valensin
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Via Aldo Moro 2, 53100 Siena, Italy; (A.K.); (F.N.)
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3
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Savva L, Platts JA. How Cu(II) binding affects structure and dynamics of α-synuclein revealed by molecular dynamics simulations. J Inorg Biochem 2023; 239:112068. [PMID: 36403437 DOI: 10.1016/j.jinorgbio.2022.112068] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 11/08/2022] [Accepted: 11/08/2022] [Indexed: 11/15/2022]
Abstract
We report accelerated molecular dynamics simulations of α-Synuclein and its complex with two Cu(II) ions bound to experimentally determined binding sites. Adding two Cu(II) ions, one bound to the N-terminal region and one to the C-terminus, decreases size and flexibility of the peptide while introducing significant new contacts within and between N-terminus and non-Aβ component (NAC). Cu(II) ions also alter the pattern of secondary structure within the peptide, inducing more and longer-lasting elements of secondary structure such as β-strands and hairpins. Free energy surfaces, obtained from reweighting the accelerated molecular dynamics boost potential, further demonstrate the restriction on size and flexibility that results from binding of copper ions.
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Affiliation(s)
- Loizos Savva
- School of Chemistry, Cardiff University, Park Place, Cardiff CF10 3AT, UK
| | - James A Platts
- School of Chemistry, Cardiff University, Park Place, Cardiff CF10 3AT, UK..
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4
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Crossroads between copper ions and amyloid formation in Parkinson's disease. Essays Biochem 2022; 66:977-986. [PMID: 35757906 PMCID: PMC9760422 DOI: 10.1042/ebc20220043] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 06/07/2022] [Accepted: 06/07/2022] [Indexed: 12/25/2022]
Abstract
Copper (Cu) ion dys-homeostasis and α-synclein amyloid deposits are two hallmarks of Parkinson's disease (PD). Here, I will discuss the connections between these features, with a major focus on the role of Cu in the α-synuclein (aS) amyloid formation process. The structurally disordered aS monomer can bind to both redox states of Cu (i.e., oxidized Cu(II) and reduced Cu(I)) with high affinity in vitro. Notably, the presence of Cu(II) (in absence of aS N-terminal acetylation) and Cu(I) (when in complex with the copper chaperone Atox1) modulate aS assembly into β-structured amyloids in opposite directions in vitro. Albeit the link to biological relevance is not fully unraveled, existing observations clearly emphasize the need for more knowledge on this interplay and its consequences to eventually combat destructive reactions that promote PD.
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5
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Bossak-Ahmad K, Bal W, Frączyk T, Drew SC. Ternary Cu 2+ Complexes of Human Serum Albumin and Glycyl-l-histidyl-l-lysine. Inorg Chem 2021; 60:16927-16931. [PMID: 34730942 DOI: 10.1021/acs.inorgchem.1c03084] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Human serum albumin (HSA) and the growth factor glycyl-l-histidyl-l-lysine (GHK) bind Cu2+ as part of their normal functions. GHK is found at its highest concentration in the albumin-rich fraction of plasma, leading to speculation that HSA and GHK form a ternary Cu2+ complex. Although preliminary evidence was presented 40 years ago, the structure and stability of such a complex have remained elusive. Here, we show that two ternary Cu(GHK)NImHSA complexes are formed between GHK and the imino nitrogen (NIm) of His side chains of HSA. We identified His3 as one site of ternary complex formation (conditional binding constant cKCu(GHK)NImHis3Cu(GHK) = 2900 M-1 at pH 7.4), with the second site (cKCu(GHK)NImHisXCu(GHK) = 1700 M-1) likely being supplied by either His128 or His510. Together with the established role of HSA as a molecular shuttle in the blood, these complexes may aid the transport of the exchangeable Cu2+ pool and the functional form of GHK.
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Affiliation(s)
- Karolina Bossak-Ahmad
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw 02-106, Poland
| | - Wojciech Bal
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw 02-106, Poland
| | - Tomasz Frączyk
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw 02-106, Poland
| | - Simon C Drew
- Department of Medicine (Royal Melbourne Hospital), The University of Melbourne, Melbourne, Victoria 3010, Australia
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6
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Ternary Cu(II) Complex with GHK Peptide and Cis-Urocanic Acid as a Potential Physiologically Functional Copper Chelate. Int J Mol Sci 2020; 21:ijms21176190. [PMID: 32867146 PMCID: PMC7503498 DOI: 10.3390/ijms21176190] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 08/19/2020] [Accepted: 08/25/2020] [Indexed: 01/06/2023] Open
Abstract
The tripeptide NH2–Gly–His–Lys–COOH (GHK), cis-urocanic acid (cis-UCA) and Cu(II) ions are physiological constituents of the human body and they co-occur (e.g., in the skin and the plasma). While GHK is known as Cu(II)-binding molecule, we found that urocanic acid also coordinates Cu(II) ions. Furthermore, both ligands create ternary Cu(II) complex being probably physiologically functional species. Regarding the natural concentrations of the studied molecules in some human tissues, together with the affinities reported here, we conclude that the ternary complex [GHK][Cu(II)][cis-urocanic acid] may be partly responsible for biological effects of GHK and urocanic acid described in the literature.
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7
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Falcone E, Ahmed IMM, Oliveri V, Bellia F, Vileno B, El Khoury Y, Hellwig P, Faller P, Vecchio G. Acrolein and Copper as Competitive Effectors of α‐Synuclein. Chemistry 2020; 26:1871-1879. [DOI: 10.1002/chem.201904885] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2019] [Indexed: 11/06/2022]
Affiliation(s)
- Enrico Falcone
- Dipartimento di Scienze ChimicheUniversità degli Studi di Catania A. Doria 6 95125 Catania Italy
- Institut de Chimie, UMR 7177CNRSUniversité de Strasbourg 4 Rue Blaise Pascal 67000 Strasbourg France
| | - Ikhlas M. M. Ahmed
- Istituto di CristallografiaConsiglio Nazionale delle Ricerche P. Gaifami 18 95126 Catania Italy
- Dipartimento di Scienze ChimicheUniversità degli Studi di Catania A. Doria 6 95125 Catania Italy
| | - Valentina Oliveri
- Dipartimento di Scienze ChimicheUniversità degli Studi di Catania A. Doria 6 95125 Catania Italy
| | - Francesco Bellia
- Istituto di CristallografiaConsiglio Nazionale delle Ricerche P. Gaifami 18 95126 Catania Italy
| | - Bertrand Vileno
- Institut de Chimie, UMR 7177CNRSUniversité de Strasbourg 4 Rue Blaise Pascal 67000 Strasbourg France
- French EPR Federation of ResearchFédération IR-RPE CNRS 67081 Strasbourg France
| | - Youssef El Khoury
- Laboratoire de bioélectrochimie et spectroscopie, UMR 7140CNRSUniversité de Strasbourg 4 Rue Blaise Pascal 67081 Strasbourg France
| | - Petra Hellwig
- Laboratoire de bioélectrochimie et spectroscopie, UMR 7140CNRSUniversité de Strasbourg 4 Rue Blaise Pascal 67081 Strasbourg France
- Institute for Advanced Study (USIAS)Université de Strasbourg 5 allée du Général Rouvillois 67083 Strasbourg France
| | - Peter Faller
- Institut de Chimie, UMR 7177CNRSUniversité de Strasbourg 4 Rue Blaise Pascal 67000 Strasbourg France
| | - Graziella Vecchio
- Dipartimento di Scienze ChimicheUniversità degli Studi di Catania A. Doria 6 95125 Catania Italy
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8
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Bloch DN, Kolkowska P, Tessari I, Baratto MC, Sinicropi A, Bubacco L, Mangani S, Pozzi C, Valensin D, Miller Y. Fibrils of α-Synuclein Abolish the Affinity of Cu2+-Binding Site to His50 and Induce Hopping of Cu2+ Ions in the Termini. Inorg Chem 2019; 58:10920-10927. [DOI: 10.1021/acs.inorgchem.9b01337] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Daniel N. Bloch
- Department of Chemistry, Ben-Gurion University of the Negev, Be’er Sheva 84105, Israel
- The Ilse Katz Institute for Nanoscale Science & Technology, Ben-Gurion University of the Negev, Be’er Sheva 84105, Israel
| | - Paulina Kolkowska
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Via A. Moro 2, 53100 Siena, Italy
| | - Isabella Tessari
- Department of Biology, University of Padova, Via U. Bassi 58b 35122, Padova, Italy
| | - Maria Camilla Baratto
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Via A. Moro 2, 53100 Siena, Italy
| | - Adalgisa Sinicropi
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Via A. Moro 2, 53100 Siena, Italy
- Italian National Council for Research, Institute for the Chemistry of OrganoMetallic Compounds (CNR-ICCOM), 50019 Sesto Fiorentino, Firenze, Italy
| | - Luigi Bubacco
- Italian National Council for Research, Institute for the Chemistry of OrganoMetallic Compounds (CNR-ICCOM), 50019 Sesto Fiorentino, Firenze, Italy
| | - Stefano Mangani
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Via A. Moro 2, 53100 Siena, Italy
| | - Cecilia Pozzi
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Via A. Moro 2, 53100 Siena, Italy
| | - Daniela Valensin
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Via A. Moro 2, 53100 Siena, Italy
| | - Yifat Miller
- Department of Chemistry, Ben-Gurion University of the Negev, Be’er Sheva 84105, Israel
- The Ilse Katz Institute for Nanoscale Science & Technology, Ben-Gurion University of the Negev, Be’er Sheva 84105, Israel
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9
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Atrián-Blasco E, Gonzalez P, Santoro A, Alies B, Faller P, Hureau C. Cu and Zn coordination to amyloid peptides: From fascinating chemistry to debated pathological relevance. Coord Chem Rev 2018; 375:38-55. [PMID: 30262932 DOI: 10.1016/j.ccr.2018.04.007] [Citation(s) in RCA: 114] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Several diseases share misfolding of different peptides and proteins as a key feature for their development. This is the case of important neurodegenerative diseases such as Alzheimer's and Parkinson's diseases and type II diabetes mellitus. Even more, metal ions such as copper and zinc might play an important role upon interaction with amyloidogenic peptides and proteins, which could impact their aggregation and toxicity abilities. In this review, the different coordination modes proposed for copper and zinc with amyloid-β, α-synuclein and IAPP will be reviewed as well as their impact on the aggregation, and ROS production in the case of copper. In addition, a special focus will be given to the mutations that affect metal binding and lead to familial cases of the diseases. Different modifications of the peptides that have been observed in vivo and could be relevant for the coordination of metal ions are also described.
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Affiliation(s)
- Elena Atrián-Blasco
- 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
| | - Paulina Gonzalez
- Biometals and Biology Chemistry, Institut de Chimie (CNRS UMR7177), Université de Strasbourg, 4 rue B. Pascal, 67081 Strasbourg, France
- University of Strasbourg Institute for Advanced Study (USIAS), Strasbourg, France
| | - Alice Santoro
- Biometals and Biology Chemistry, Institut de Chimie (CNRS UMR7177), Université de Strasbourg, 4 rue B. Pascal, 67081 Strasbourg, France
- University of Strasbourg Institute for Advanced Study (USIAS), Strasbourg, France
| | - Bruno Alies
- Université de Bordeaux, ChemBioPharm INSERM U1212 CNRS UMR 5320, Bordeaux, France
| | - Peter Faller
- Biometals and Biology Chemistry, Institut de Chimie (CNRS UMR7177), Université de Strasbourg, 4 rue B. Pascal, 67081 Strasbourg, France
- University of Strasbourg Institute for Advanced Study (USIAS), Strasbourg, France
| | - 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
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10
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Ramis R, Ortega-Castro J, Vilanova B, Adrover M, Frau J. Copper(II) Binding Sites in N-Terminally Acetylated α-Synuclein: A Theoretical Rationalization. J Phys Chem A 2017; 121:5711-5719. [DOI: 10.1021/acs.jpca.7b03165] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Rafael Ramis
- Departament de Química, Institut Universitari d’Investigació
en Ciències de la Salut (IUNICS), Universitat de les Illes Balears Palma de Mallorca, 07122 Palma, Spain
- Instituto de Investigación Sanitaria de Palma (IdISPA), 07010 Palma, Spain
| | - Joaquín Ortega-Castro
- Departament de Química, Institut Universitari d’Investigació
en Ciències de la Salut (IUNICS), Universitat de les Illes Balears Palma de Mallorca, 07122 Palma, Spain
- Instituto de Investigación Sanitaria de Palma (IdISPA), 07010 Palma, Spain
| | - Bartolomé Vilanova
- Departament de Química, Institut Universitari d’Investigació
en Ciències de la Salut (IUNICS), Universitat de les Illes Balears Palma de Mallorca, 07122 Palma, Spain
- Instituto de Investigación Sanitaria de Palma (IdISPA), 07010 Palma, Spain
| | - Miquel Adrover
- Departament de Química, Institut Universitari d’Investigació
en Ciències de la Salut (IUNICS), Universitat de les Illes Balears Palma de Mallorca, 07122 Palma, Spain
- Instituto de Investigación Sanitaria de Palma (IdISPA), 07010 Palma, Spain
| | - Juan Frau
- Departament de Química, Institut Universitari d’Investigació
en Ciències de la Salut (IUNICS), Universitat de les Illes Balears Palma de Mallorca, 07122 Palma, Spain
- Instituto de Investigación Sanitaria de Palma (IdISPA), 07010 Palma, Spain
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11
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Karas JA, Sani MA, Separovic F. Chemical Synthesis and Characterization of an Equinatoxin II(1-85) Analogue. Molecules 2017; 22:E559. [PMID: 28358312 PMCID: PMC6153748 DOI: 10.3390/molecules22040559] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Revised: 03/29/2017] [Accepted: 03/29/2017] [Indexed: 11/17/2022] Open
Abstract
The chemical synthesis of an 85 residue analogue of the pore-forming protein, Equinatoxin II (EqtII), was achieved. Peptide precursors with over 40 residues were assembled by solid phase synthesis. The EqtII(1-46) fragment was modified to the reactive C-terminal thioester and native chemical ligation was performed with the A47C mutated EqtII(47-85) peptide to form the EqtII(1-85) analogue. Circular dichroism spectroscopy indicated that the N-terminal domain of EqtII(1-46) and EqtII(1-85) maintains predominantly an α-helical structure in solution and also in the presence of lipid micelles. This demonstrates the feasibility of assembling the full 179 residue protein EqtII via chemical means. Site-specific isotopic labels could be incorporated for structural studies in membranes by solid-state NMR spectroscopy.
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Affiliation(s)
- John A Karas
- School of Chemistry, Bio21 Institute, University of Melbourne, Melbourne, VIC 3010, Australia.
| | - Marc-Antoine Sani
- School of Chemistry, Bio21 Institute, University of Melbourne, Melbourne, VIC 3010, Australia.
| | - Frances Separovic
- School of Chemistry, Bio21 Institute, University of Melbourne, Melbourne, VIC 3010, Australia.
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12
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van Diggelen F, Tepper AWJW, Apetri MM, Otzen DE. α-Synuclein Oligomers: A Study in Diversity. Isr J Chem 2016. [DOI: 10.1002/ijch.201600116] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Femke van Diggelen
- Crossbeta Biosciences; Padualaan 8 3584CH Utrecht The Netherlands
- Interdisciplinary Nanoscience Centre (iNANO); Aarhus University; Gustav Wieds Vej 14 8000C Aarhus Denmark
| | | | | | - Daniel E. Otzen
- Interdisciplinary Nanoscience Centre (iNANO); Aarhus University; Gustav Wieds Vej 14 8000C Aarhus Denmark
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13
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Hecel A, De Ricco R, Valensin D. Influence of membrane environments and copper ions on the structural features of amyloidogenic proteins correlated to neurodegeneration. Coord Chem Rev 2016. [DOI: 10.1016/j.ccr.2016.06.018] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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14
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Coordination and redox properties of copper interaction with α-synuclein. J Inorg Biochem 2016; 163:292-300. [DOI: 10.1016/j.jinorgbio.2016.04.012] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Revised: 03/11/2016] [Accepted: 04/04/2016] [Indexed: 11/23/2022]
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15
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Drew SC. Probing the quaternary structure of metal-bridged peptide oligomers. J Inorg Biochem 2016; 158:30-34. [DOI: 10.1016/j.jinorgbio.2016.01.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2015] [Revised: 12/17/2015] [Accepted: 01/07/2016] [Indexed: 11/27/2022]
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16
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Pedersen JT, Chen SW, Borg CB, Ness S, Bahl JM, Heegaard NHH, Dobson CM, Hemmingsen L, Cremades N, Teilum K. Amyloid-β and α-Synuclein Decrease the Level of Metal-Catalyzed Reactive Oxygen Species by Radical Scavenging and Redox Silencing. J Am Chem Soc 2016; 138:3966-9. [PMID: 26967463 PMCID: PMC4827876 DOI: 10.1021/jacs.5b13577] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
![]()
The formation of
reactive oxygen species (ROS) is linked to the
pathogenesis of neurodegenerative diseases. Here we have investigated
the effect of soluble and aggregated amyloid-β (Aβ) and
α-synuclein (αS), associated with Alzheimer’s and
Parkinson’s diseases, respectively, on the Cu2+-catalyzed
formation of ROS in vitro in the presence of a biological
reductant. We find that the levels of ROS, and the rate by which ROS
is generated, are significantly reduced when Cu2+ is bound
to Aβ or αS, particularly when they are in their oligomeric
or fibrillar forms. This effect is attributed to a combination of
radical scavenging and redox silencing mechanisms. Our findings suggest
that the increase in ROS associated with the accumulation of aggregated
Aβ or αS does not result from a particularly ROS-active
form of these peptides, but rather from either a local increase of
Cu2+ and other ROS-active metal ions in the aggregates
or as a downstream consequence of the formation of the pathological
amyloid structures.
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Affiliation(s)
| | - Serene W Chen
- Department of Chemistry, University of Cambridge , Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Christian B Borg
- Department of Biology, University of Copenhagen , 2200 Copenhagen, Denmark
| | - Samuel Ness
- Department of Chemistry, University of Cambridge , Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Justyna M Bahl
- Department of Autoimmunology and Biomarkers, Statens Serum Institut , 2300 Copenhagen, Denmark.,Department of Clinical Biochemistry, Clinical Institute, Odense University Hospital, University of Southern Denmark , 5000 Odense, Denmark
| | - Niels H H Heegaard
- Department of Autoimmunology and Biomarkers, Statens Serum Institut , 2300 Copenhagen, Denmark.,Department of Clinical Biochemistry, Clinical Institute, Odense University Hospital, University of Southern Denmark , 5000 Odense, Denmark
| | - Christopher M Dobson
- Department of Chemistry, University of Cambridge , Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | | | - Nunilo Cremades
- Department of Chemistry, University of Cambridge , Lensfield Road, Cambridge CB2 1EW, United Kingdom.,Biocomputation and Complex Systems Physics Institute (BIFI)-Joint Unit BIFI-IQFR (CSIC), University of Zaragoza , 50018 Zaragoza, Spain
| | - Kaare Teilum
- Department of Biology, University of Copenhagen , 2200 Copenhagen, Denmark
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17
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Ji K, Zhao Y, Yu T, Wang Z, Gong H, Yang X, Liu Y, Huang K. Inhibition effects of tanshinone on the aggregation of α-synuclein. Food Funct 2016; 7:409-16. [DOI: 10.1039/c5fo00664c] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Bioactive tanshinone compounds inhibit the aggregation of α-synuclein and extend the life span of aC. elegansmodel of Parkinson's disease.
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Affiliation(s)
- Kaige Ji
- Tongji School of Pharmacy
- Huazhong University of Science and Technology
- Wuhan
- China
| | - Yudan Zhao
- Tongji School of Pharmacy
- Huazhong University of Science and Technology
- Wuhan
- China
| | - Tianhong Yu
- Tongji School of Pharmacy
- Huazhong University of Science and Technology
- Wuhan
- China
| | - Zhuoyi Wang
- Tongji School of Pharmacy
- Huazhong University of Science and Technology
- Wuhan
- China
| | - Hao Gong
- Tongji School of Pharmacy
- Huazhong University of Science and Technology
- Wuhan
- China
| | - Xin Yang
- Tongji School of Pharmacy
- Huazhong University of Science and Technology
- Wuhan
- China
| | - Yang Liu
- Synergy Innovation Center of Biological Peptide Antidiabetics of Hubei Province
- School of Life Science
- Wuchang University of Technology
- Wuhan
- China
| | - Kun Huang
- Tongji School of Pharmacy
- Huazhong University of Science and Technology
- Wuhan
- China
- Center for Biomedicine Research
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18
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D'Ambrosi N, Rossi L. Copper at synapse: Release, binding and modulation of neurotransmission. Neurochem Int 2015; 90:36-45. [PMID: 26187063 DOI: 10.1016/j.neuint.2015.07.006] [Citation(s) in RCA: 123] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2015] [Revised: 06/30/2015] [Accepted: 07/10/2015] [Indexed: 10/23/2022]
Abstract
Over the last decade, a piece of the research studying copper role in biological systems was devoted to unravelling a still elusive, but extremely intriguing, aspect that is the involvement of copper in synaptic function. These studies were prompted to provide a rationale to the finding that copper is released in the synaptic cleft upon depolarization. The copper pump ATP7A, which mutations are responsible for diseases with a prominent neurodegenerative component, seems to play a pivotal role in the release of copper at synapses. Furthermore, it was found that, when in the synaptic cleft, copper can control, directly or indirectly, the activity of the neurotransmitter receptors (NMDA, AMPA, GABA, P2X receptors), thus affecting excitability. In turn, neurotransmission can affect copper trafficking and delivery in neuronal cells. Furthermore, it was reported that copper can also modulate synaptic vesicles trafficking and the interaction between proteins of the secretory pathways. Interestingly, proteins with a still unclear role in neuronal system though associated with the pathogenesis of neurodegenerative diseases (the amyloid precursor protein, APP, the prion protein, PrP, α-synuclein, α-syn) show copper-binding domains. They may act as copper buffer at synapses and participate in the interplay between copper and the neurotransmitters receptors. Given that copper dysmetabolism occurs in several diseases affecting central and peripheral nervous system, the findings on the contribution of copper in synaptic transmission, beside its more consolidate role as a neuronal enzymes cofactor, may open new insights for therapy interventions.
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Affiliation(s)
- Nadia D'Ambrosi
- Institute of Anatomy and Cell Biology, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Luisa Rossi
- Department of Biology, University of Rome Tor Vergata, Rome, Italy.
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Faggi E, Gavara R, Bolte M, Fajarí L, Juliá L, Rodríguez L, Alfonso I. Copper(ii) complexes of macrocyclic and open-chain pseudopeptidic ligands: synthesis, characterization and interaction with dicarboxylates. Dalton Trans 2015; 44:12700-10. [DOI: 10.1039/c5dt01496d] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cu(ii) complexes of pseudopeptides interact with very similar dicarboxylates of biological interest (malate and aspartate) affording strikingly different outcomes.
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Affiliation(s)
- Enrico Faggi
- Departamento de Química Biológica y Modelización Molecular
- IQAC–CSIC
- E-08034 Barcelona
- Spain
| | - Raquel Gavara
- Departament de Química Inorgànica
- Universitat de Barcelona
- 08028 Barcelona
- Spain
| | - Michael Bolte
- Institut für Anorganische Chemie
- J.-W.-Goethe-Universität
- D-60438 Frankfurt/Main
- Germany
| | - Lluís Fajarí
- Departamento de Química Biológica y Modelización Molecular
- IQAC–CSIC
- E-08034 Barcelona
- Spain
| | - Luís Juliá
- Departamento de Química Biológica y Modelización Molecular
- IQAC–CSIC
- E-08034 Barcelona
- Spain
| | - Laura Rodríguez
- Departament de Química Inorgànica
- Universitat de Barcelona
- 08028 Barcelona
- Spain
| | - Ignacio Alfonso
- Departamento de Química Biológica y Modelización Molecular
- IQAC–CSIC
- E-08034 Barcelona
- Spain
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