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Hu X, Amin KS, Schneider M, Lim C, Salahub D, Baldauf C. System-Specific Parameter Optimization for Nonpolarizable and Polarizable Force Fields. J Chem Theory Comput 2024; 20:1448-1464. [PMID: 38279917 PMCID: PMC10867808 DOI: 10.1021/acs.jctc.3c01141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 12/04/2023] [Accepted: 12/05/2023] [Indexed: 01/29/2024]
Abstract
The accuracy of classical force fields (FFs) has been shown to be limited for the simulation of cation-protein systems despite their importance in understanding the processes of life. Improvements can result from optimizing the parameters of classical FFs or by extending the FF formulation by terms describing charge transfer (CT) and polarization (POL) effects. In this work, we introduce our implementation of the CTPOL model in OpenMM, which extends the classical additive FF formula by adding CT and POL. Furthermore, we present an open-source parametrization tool, called FFAFFURR, that enables the (system-specific) parametrization of OPLS-AA and CTPOL models. The performance of our workflow was evaluated by its ability to reproduce quantum chemistry energies and by molecular dynamics simulations of a zinc-finger protein.
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Affiliation(s)
- Xiaojuan Hu
- Fritz-Haber-Institut
der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
| | - Kazi S. Amin
- Centre
for Molecular Simulation and Department of Biological Sciences, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
| | - Markus Schneider
- Fritz-Haber-Institut
der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
| | - Carmay Lim
- Institute
of Biomedical Sciences, Academia Sinica, Taipei 115, Taiwan
- Department
of Chemistry, National Tsing Hua University, Hsinchu 300, Taiwan
| | - Dennis Salahub
- Centre
for Molecular Simulation and Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
| | - Carsten Baldauf
- Fritz-Haber-Institut
der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
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2
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Yuan AT, Stillman MJ. Metallothionein-3 and carbonic anhydrase metalation properties with Zn(II) and Cd(II) change as a result of protein-protein interactions. Metallomics 2023; 15:mfad056. [PMID: 37723614 DOI: 10.1093/mtomcs/mfad056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Accepted: 09/06/2023] [Indexed: 09/20/2023]
Abstract
Metallothioneins (MT) are regulators of the metals Zn(II) and Cu(I) and act as antioxidants in many organisms, including in humans. Isoform 3 (MT3) is expressed constitutively in central nervous tissue and has been shown to have additional biological functions, including the inhibition of neuronal growth, the regulation of apoptosis, and cytoskeleton modulation. To facilitate these functions, protein-protein interactions likely occur. These interactions may then impact the metalation status of the MT and the recipient metalloprotein. Using electrospray ionization mass spectrometry and circular dichroism spectroscopy, we report that the interaction between the zinc metalloenzyme, carbonic anhydrase (CA), and MT3, impacts the metalation profiles of both apo-MT3 and apo-CA with Cd(II) and Zn(II). We observe two phases in the metalation of the apo-CA, the first of which is associated with an increased binding affinity of apo-CA for Cd/Zn(II) and the second pathway is associated with apo-CA metalated without a change in binding affinity. The weak interactions that result in this change of binding affinity are not detectable as a protein complex in the ESI-mass spectral data or in the circular dichroism spectra. These unusual metalation properties of apo-CA in the presence of apo-MT3 are evidence of the effects of protein-protein interactions. With adjustment to take into account the interaction of both proteins, we report the complete Cd(II) and Zn(II) binding constants of MT3 under physiological conditions, as well as the pH dependence of these binding pathways.
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Affiliation(s)
- Amelia T Yuan
- Department of Chemistry, University of Western Ontario, 1151 Richmond St., London, Ontario N6A 5B7, Canada
| | - Martin J Stillman
- Department of Chemistry, University of Western Ontario, 1151 Richmond St., London, Ontario N6A 5B7, Canada
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3
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Suh JM, Kim M, Yoo J, Han J, Paulina C, Lim MH. Intercommunication between metal ions and amyloidogenic peptides or proteins in protein misfolding disorders. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2022.214978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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4
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Wang J, Liu J, Du G, An Y, Zhao C, Zeng B. The Influence of Ca 2+ and Zn 2+ on the Amyloid Fibril Formation by β-Casein. Protein Pept Lett 2021; 27:915-922. [PMID: 32186269 DOI: 10.2174/0929866527666200318143533] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2019] [Revised: 01/08/2020] [Accepted: 01/15/2020] [Indexed: 12/22/2022]
Abstract
BACKGROUND The amyloid fibril formation in different tissues or organs is related to amyloidosis. The Ca2+, Zn2+ and heparan sulfate (HS) are important elements and compositions in human body, which play a key role in regulating various physiological activities. Recently, there are increasing evidence suggest that they are closely linked to the amyloid fibril formation. OBJECTIVE The effect of Ca2+ and Zn2+ on the amyloid fibril formation by β-casein was investigated in the absence and presence of HS, which was significantly to explore the relationship between the concentration changes of Ca2+ and Zn2+ and amyloid fibril formation. METHODS In this work, the influence of Ca2+ and Zn2+ on the β-casein fibril formation in the absence and presence of HS was investigated by various methods of Thioflavin T fluorescence assay, transmission electron microscopy and intrinsic fluorescence measure. RESULTS The results demonstrated that Ca2+ and Zn2+ promoted the β-casein fibril formation. The effect of Ca2+ was greater than that of Zn2+. Meanwhile, the both metal ions had stronger effects when β-casein was incubated with HS together. In addition, it was also observed that the microenvironment of β-casein was changed because the intrinsic fluorescence peaks were red-shifted on the influence of Ca2+ and Zn2+. CONCLUSION Ca2+ and Zn2+ were capable of promoting the β-casein fibril formation in the both absence and presence of HS. This work set up the foundation for further researching of the amyloidosis pathogenesis and provided new insight for us to understand relationship between the inflammation and amyloidosis.
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Affiliation(s)
- Jia Wang
- Pharmacy College, Jilin University, Changchun, China
| | - Jihua Liu
- Pharmacy College, Jilin University, Changchun, China
| | - Guangguang Du
- Pharmacy College, Jilin University, Changchun, China
| | - Yang An
- Pharmacy College, Jilin University, Changchun, China
| | - Chunfang Zhao
- Pharmacy College, Jilin University, Changchun, China
| | - Baohua Zeng
- Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, China
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5
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Zinc Therapy in Early Alzheimer's Disease: Safety and Potential Therapeutic Efficacy. Biomolecules 2020; 10:biom10081164. [PMID: 32784855 PMCID: PMC7466035 DOI: 10.3390/biom10081164] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2020] [Revised: 07/30/2020] [Accepted: 08/05/2020] [Indexed: 12/17/2022] Open
Abstract
Zinc therapy is normally utilized for treatment of Wilson disease (WD), an inherited condition that is characterized by increased levels of non-ceruloplasmin bound ('free') copper in serum and urine. A subset of patients with Alzheimer's disease (AD) or its prodromal form, known as Mild Cognitive Impairment (MCI), fail to maintain a normal copper metabolic balance and exhibit higher than normal values of non-ceruloplasmin copper. Zinc's action mechanism involves the induction of intestinal cell metallothionein, which blocks copper absorption from the intestinal tract, thus restoring physiological levels of non-ceruloplasmin copper in the body. On this basis, it is employed in WD. Zinc therapy has shown potential beneficial effects in preliminary AD clinical trials, even though the studies have missed their primary endpoints, since they have study design and other important weaknesses. Nevertheless, in the studied AD patients, zinc effectively decreased non-ceruloplasmin copper levels and showed potential for improved cognitive performances with no major side effects. This review discusses zinc therapy safety and the potential therapeutic effects that might be expected on a subset of individuals showing both cognitive complaints and signs of copper imbalance.
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Wong DL, Korkola NC, Stillman MJ. Kinetics of competitive Cd2+ binding pathways: the realistic structure of intrinsically disordered, partially metallated metallothioneins. Metallomics 2019; 11:894-905. [DOI: 10.1039/c8mt00347e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The metallation of metallothionein can proceed via two different intermediate structures: a beaded structure that forms quickly (top) and a slow-forming cluster structure (bottom) before forming the fully metallated two-domain protein.
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Affiliation(s)
- Daisy L. Wong
- Department of Chemistry
- the University of Western Ontario
- Ontario
- Canada
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7
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Khmeleva SA, Radko SP, Kozin SA, Kiseleva YY, Mezentsev YV, Mitkevich VA, Kurbatov LK, Ivanov AS, Makarov AA. Zinc-Mediated Binding of Nucleic Acids to Amyloid-β Aggregates: Role of Histidine Residues. J Alzheimers Dis 2018; 54:809-19. [PMID: 27567853 DOI: 10.3233/jad-160415] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Amyloid-β peptide (Aβ) plays a central role in Alzheimer's disease (AD) pathogenesis. Besides extracellular Aβ, intraneuronal Aβ (iAβ) has been suggested to contribute to AD onset and development. Based on reported in vitro Aβ-DNA interactions and nuclear localization of iAβ, the interference of iAβ with the normal DNA expression has recently been proposed as a plausible pathway by which Aβ can exert neurotoxicity. Employing the sedimentation assay, thioflavin T fluorescence, and dynamic light scattering we have studied effects of zinc ions on binding of RNA and single- and double-stranded DNA molecules to Aβ42 aggregates. It has been found that zinc ions significantly enhance the binding of RNA and DNA molecules to pre-formed β-sheet rich Aβ42 aggregates. Another type of Aβ42 aggregates, the zinc-induced amorphous aggregates, was demonstrated to also bind all types of nucleic acids tested. To evaluate the role of the Aβ metal-binding domain's histidine residues in Aβ-nucleic acid interactions mediated by zinc, Aβ16 mutants with substitutions H6R and H6A-H13A and rat Aβ16 lacking histidine residue 13 were used. The zinc-induced interaction of Aβ16 with DNA was shown to critically depend on histidine residues 6 and 13. However, the inclusion of H6R mutation in Aβ42 peptide did not affect DNA binding to Aβ42 aggregates. Since oxidative and/or nitrosative stresses implicated in AD pathogenesis are known to release zinc ions from metallothioneins in cytoplasm and cell nuclei, our findings suggest that intracellular zinc can be an important player in iAβ-nucleic acid interactions.
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Affiliation(s)
- Svetlana A Khmeleva
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia.,Orekhovich Institute of Biomedical Chemistry, Moscow, Russia
| | - Sergey P Radko
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia.,Orekhovich Institute of Biomedical Chemistry, Moscow, Russia
| | - Sergey A Kozin
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia
| | - Yana Y Kiseleva
- Orekhovich Institute of Biomedical Chemistry, Moscow, Russia
| | | | - Vladimir A Mitkevich
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia
| | | | - Alexis S Ivanov
- Orekhovich Institute of Biomedical Chemistry, Moscow, Russia
| | - Alexander A Makarov
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow, Russia
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8
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Atrián-Blasco E, Santoro A, Pountney DL, Meloni G, Hureau C, Faller P. Chemistry of mammalian metallothioneins and their interaction with amyloidogenic peptides and proteins. Chem Soc Rev 2017; 46:7683-7693. [PMID: 29114657 PMCID: PMC5728347 DOI: 10.1039/c7cs00448f] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Cu and Zn ions are essential in most living beings. Their metabolism is critical for health and mis-metabolism can be lethal. In the last two decades, a large body of evidence has reported the role of copper, zinc and iron, and oxidative stress in several neurodegenerative diseases like Alzheimer's, Parkinson's, prion diseases, etc. To what extent this mis-metabolism is causative or a consequence of these diseases is still a matter of research. In this context metallothioneins (MTs) appear to play a central gate-keeper role in controlling aberrant metal-protein interactions. MTs are small proteins that can bind high amounts of Zn(ii) and Cu(i) ions in metal-cluster arrangements via their cysteine thiolates. Moreover, MTs are well known antioxidants. The present tutorial outlines the chemistry underlying the interconnection between copper(i/ii) and zinc(ii) coordination to amyloidogenic proteins and MTs, and their redox properties in generation and/or silencing reactive oxygen species (overproduced in oxidative stress) and other reactants. These studies have revealed the coordination chemistry involved in neurodegenerative diseases and the interactions between MTs and amyloidogenic protein metal-complexes (like amyloid-β, α-synuclein and prion-protein). Overall, the protective role of MTs in neurodegenerative processes is emerging, serving as a foundation for exploring MT chemistry as inspiration for therapeutic approaches.
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Affiliation(s)
- 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)
| | - Alice Santoro
- Biometals and Biology Chemistry, Institut de Chimie (CNRS UMR7177), Université de Strasbourg, 4 rue B. Pascal, 67081 Strasbourg, France
| | - Dean L. Pountney
- Menzies Health Institute Queensland, Griffith University Gold Coast 4222, QLD, Australia
| | - Gabriele Meloni
- Department of Chemistry and Biochemistry, University of Texas at Dallas, 800 W Campbell Road, Richardson, TX 75080-3021, USA
| | - 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)
- University of Strasbourg Institute for Advanced Study (USIAS), Strasbourg, 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
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9
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Mammalian Metallothionein-3: New Functional and Structural Insights. Int J Mol Sci 2017; 18:ijms18061117. [PMID: 28538697 PMCID: PMC5485941 DOI: 10.3390/ijms18061117] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2017] [Revised: 05/12/2017] [Accepted: 05/15/2017] [Indexed: 12/25/2022] Open
Abstract
Metallothionein-3 (MT-3), a member of the mammalian metallothionein (MT) family, is mainly expressed in the central nervous system (CNS). MT-3 possesses a unique neuronal growth inhibitory activity, and the levels of this intra- and extracellularly occurring metalloprotein are markedly diminished in the brain of patients affected by a number of metal-linked neurodegenerative disorders, including Alzheimer’s disease (AD). In these pathologies, the redox cycling of copper, accompanied by the production of reactive oxygen species (ROS), plays a key role in the neuronal toxicity. Although MT-3 shares the metal-thiolate clusters with the well-characterized MT-1 and MT-2, it shows distinct biological, structural and chemical properties. Owing to its anti-oxidant properties and modulator function not only for Zn, but also for Cu in the extra- and intracellular space, MT-3, but not MT-1/MT-2, protects neuronal cells from the toxicity of various Cu(II)-bound amyloids. In recent years, the roles of zinc dynamics and MT-3 function in neurodegeneration are slowly emerging. This short review focuses on the recent developments regarding the chemistry and biology of MT-3.
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10
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Manso Y, Comes G, López-Ramos JC, Belfiore M, Molinero A, Giralt M, Carrasco J, Adlard PA, Bush AI, Delgado-García JM, Hidalgo J. Overexpression of Metallothionein-1 Modulates the Phenotype of the Tg2576 Mouse Model of Alzheimer's Disease. J Alzheimers Dis 2016; 51:81-95. [PMID: 26836194 DOI: 10.3233/jad-151025] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Alzheimer's disease (AD) is the most commonly diagnosed dementia, where signs of neuroinflammation and oxidative stress are prominent. In this study we intend to further characterize the roles of the antioxidant, anti-inflammatory, and heavy metal binding protein, metallothionein-1 (MT-1), by crossing Mt1 overexpressing mice with a well-known mouse model of AD, Tg2576 mice, which express the human amyloid-β protein precursor (hAβPP) with the Swedish K670N/M671L mutations. Mt1 overexpression increased overall perinatal survival, but did not affect significantly hAβPP-induced mortality and weight loss in adult mice. Amyloid plaque burden in ∼14-month-old mice was increased by Mt1 overexpression in the hippocampus but not the cortex. Despite full length hAβPP levels and amyloid plaques being increased by Mt1 overexpression in the hippocampus of both sexes, oligomeric and monomeric forms of Aβ, which may contribute more to toxicity, were decreased in the hippocampus of females and increased in males. Several behavioral traits such as exploration, anxiety, and learning were altered in Tg2576 mice to various degrees depending on the age and the sex. Mt1 overexpression ameliorated the effects of hAβPP on exploration in young females, and potentiated those on anxiety in old males, and seemed to improve the rate of spatial learning (Morris water maze) and the learning elicited by a classical conditioning procedure (eye-blink test). These results clearly suggest that MT-1 may be involved in AD pathogenesis.
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Affiliation(s)
- Yasmina Manso
- Animal Physiology Unit, Department of Cellular Biology, Physiology and Immunology, Faculty of Biosciences Bellaterra, Barcelona, Spain.,Institute of Neurosciences, Universitat Autònoma de Barcelona, Bellaterra, Barcelona, Spain
| | - Gemma Comes
- Animal Physiology Unit, Department of Cellular Biology, Physiology and Immunology, Faculty of Biosciences Bellaterra, Barcelona, Spain.,Institute of Neurosciences, Universitat Autònoma de Barcelona, Bellaterra, Barcelona, Spain
| | | | - Mónica Belfiore
- Animal Physiology Unit, Department of Cellular Biology, Physiology and Immunology, Faculty of Biosciences Bellaterra, Barcelona, Spain.,Institute of Neurosciences, Universitat Autònoma de Barcelona, Bellaterra, Barcelona, Spain
| | - Amalia Molinero
- Animal Physiology Unit, Department of Cellular Biology, Physiology and Immunology, Faculty of Biosciences Bellaterra, Barcelona, Spain.,Institute of Neurosciences, Universitat Autònoma de Barcelona, Bellaterra, Barcelona, Spain
| | - Mercedes Giralt
- Animal Physiology Unit, Department of Cellular Biology, Physiology and Immunology, Faculty of Biosciences Bellaterra, Barcelona, Spain.,Institute of Neurosciences, Universitat Autònoma de Barcelona, Bellaterra, Barcelona, Spain
| | - Javier Carrasco
- Animal Physiology Unit, Department of Cellular Biology, Physiology and Immunology, Faculty of Biosciences Bellaterra, Barcelona, Spain.,Institute of Neurosciences, Universitat Autònoma de Barcelona, Bellaterra, Barcelona, Spain
| | - Paul A Adlard
- The Florey Institute of Neuroscience and Mental Health and The University of Melbourne, Parkville, Victoria, Australia
| | - Ashley I Bush
- The Florey Institute of Neuroscience and Mental Health and The University of Melbourne, Parkville, Victoria, Australia
| | | | - Juan Hidalgo
- Animal Physiology Unit, Department of Cellular Biology, Physiology and Immunology, Faculty of Biosciences Bellaterra, Barcelona, Spain.,Institute of Neurosciences, Universitat Autònoma de Barcelona, Bellaterra, Barcelona, Spain
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11
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Wiloch MZ, Wawrzyniak UE, Ufnalska I, Piotrowski G, Bonna A, Wróblewski W. Redox Activity of Copper(II) Complexes with NSFRY Pentapeptide and Its Analogues. PLoS One 2016; 11:e0160256. [PMID: 27517864 PMCID: PMC4982629 DOI: 10.1371/journal.pone.0160256] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Accepted: 07/15/2016] [Indexed: 11/25/2022] Open
Abstract
The influence of cation-π interactions on the electrochemical properties of copper(II) complexes with synthesized pentapeptide C-terminal fragment of Atrial Natriuretic Factor (ANF) hormone was studied in this work. Molecular modeling performed for Cu(II)-NSFRY-NH2 complex indicated that the cation-π interactions between Tyr and Cu(II), and also between Phe-Arg led to specific conformation defined as peptide box, in which the metal cation is isolated from the solvent by peptide ligand. Voltammetry experiments enabled to compare the redox properties and stability of copper(II) complexes with NSFRY-NH2 and its analogues (namely: NSFRA-NH2, NSFRF-NH2, NSAAY-NH2, NSAAA-NH2, AAAAA-NH2) as well as to evaluate the contribution of individual amino acid residues to these properties. The obtained results led to the conclusion, that cation-π interactions play a crucial role in the effective stabilization of copper(II) complexes with the fragments of ANF peptide hormone and therefore could control the redox processes in other metalloproteins.
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Affiliation(s)
- Magdalena Zofia Wiloch
- Department of Microbioanalytics, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00–664, Warsaw, Poland
| | - Urszula Elżbieta Wawrzyniak
- Department of Microbioanalytics, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00–664, Warsaw, Poland
- * E-mail: ;
| | - Iwona Ufnalska
- Department of Microbioanalytics, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00–664, Warsaw, Poland
| | - Grzegorz Piotrowski
- Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80–308, Gdańsk, Poland
| | - Arkadiusz Bonna
- Department of Biophysics, Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Pawińskiego, 5a, 02–106, Warsaw, Poland
- * E-mail: ;
| | - Wojciech Wróblewski
- Department of Microbioanalytics, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00–664, Warsaw, Poland
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12
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Metals and Neuronal Metal Binding Proteins Implicated in Alzheimer's Disease. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2016; 2016:9812178. [PMID: 26881049 PMCID: PMC4736980 DOI: 10.1155/2016/9812178] [Citation(s) in RCA: 92] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/05/2015] [Accepted: 12/17/2015] [Indexed: 11/18/2022]
Abstract
Alzheimer's disease (AD) is the most prevalent age-related dementia affecting millions of people worldwide. Its main pathological hallmark feature is the formation of insoluble protein deposits of amyloid-β and hyperphosphorylated tau protein into extracellular plaques and intracellular neurofibrillary tangles, respectively. Many of the mechanistic details of this process remain unknown, but a well-established consequence of protein aggregation is synapse dysfunction and neuronal loss in the AD brain. Different pathways including mitochondrial dysfunction, oxidative stress, inflammation, and metal metabolism have been suggested to be implicated in this process. In particular, a body of evidence suggests that neuronal metal ions such as copper, zinc, and iron play important roles in brain function in health and disease states and altered homeostasis and distribution as a common feature across different neurodegenerative diseases and aging. In this focused review, we overview neuronal proteins that are involved in AD and whose metal binding properties may underlie important biochemical and regulatory processes occurring in the brain during the AD pathophysiological process.
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13
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Berthoumieu O, Nguyen PH, Castillo-Frias MPD, Ferre S, Tarus B, Nasica-Labouze J, Noël S, Saurel O, Rampon C, Doig AJ, Derreumaux P, Faller P. Combined experimental and simulation studies suggest a revised mode of action of the anti-Alzheimer disease drug NQ-Trp. Chemistry 2015; 21:12657-66. [PMID: 26179053 DOI: 10.1002/chem.201500888] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2015] [Indexed: 11/09/2022]
Abstract
Inhibition of the aggregation of the monomeric peptide β-amyloid (Aβ) into oligomers is a widely studied therapeutic approach in Alzheimer's disease (AD). Many small molecules have been reported to work in this way, including 1,4-naphthoquinon-2-yl-L-tryptophan (NQ-Trp). NQ-Trp has been reported to inhibit aggregation, to rescue cells from Aβ toxicity, and showed complete phenotypic recovery in an in vivo AD model. In this work we investigated its molecular mechanism by using a combined approach of experimental and theoretical studies, and obtained converging results. NQ-Trp is a relatively weak inhibitor and the fluorescence data obtained by employing the fluorophore widely used to monitor aggregation into fibrils can be misinterpreted due to the inner filter effect. Simulations and NMR experiments showed that NQ-Trp has no specific "binding site"-type interaction with mono- and dimeric Aβ, which could explain its low inhibitory efficiency. This suggests that the reported anti-AD activity of NQ-Trp-type molecules in in vivo models has to involve another mechanism. This study has revealed the potential pitfalls in the development of aggregation inhibitors for amyloidogenic peptides, which are of general interest for all the molecules studied in the context of inhibiting the formation of toxic aggregates.
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Affiliation(s)
- Olivia Berthoumieu
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 route de Narbonne, BP 44099, 31077 Toulouse Cedex 4 (France) and Université de Toulouse, UPS, INPT, 31077 Toulouse Cedex 4 (France)
| | - Phuong H Nguyen
- Laboratoire de Biochimie Théorique, UPR 9080 CNRS, Université Paris Diderot, Sorbonne Paris Cité, IBPC, 13 rue Pierre et Marie Curie, 75005 Paris (France)
| | - Maria P Del Castillo-Frias
- Manchester Institute of Biotechnology, Faculty of Life Sciences, The University of Manchester, 131 Princess Street, Manchester M1 7DN (UK)
| | - Sabrina Ferre
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 route de Narbonne, BP 44099, 31077 Toulouse Cedex 4 (France) and Université de Toulouse, UPS, INPT, 31077 Toulouse Cedex 4 (France)
| | - Bogdan Tarus
- Laboratoire de Biochimie Théorique, UPR 9080 CNRS, Université Paris Diderot, Sorbonne Paris Cité, IBPC, 13 rue Pierre et Marie Curie, 75005 Paris (France)
| | - Jessica Nasica-Labouze
- Laboratoire de Biochimie Théorique, UPR 9080 CNRS, Université Paris Diderot, Sorbonne Paris Cité, IBPC, 13 rue Pierre et Marie Curie, 75005 Paris (France)
| | - Sabrina Noël
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 route de Narbonne, BP 44099, 31077 Toulouse Cedex 4 (France) and Université de Toulouse, UPS, INPT, 31077 Toulouse Cedex 4 (France)
| | - Olivier Saurel
- IPBS Institute of Pharmacology and Structural Biology, Université de Toulouse, UPS, 205 route de Narbonne, 31077 Toulouse (France).,IPBS, UMR 5089, CNRS, 205 route de Narbonne, BP 64182, 31077 Toulouse (France)
| | - Claire Rampon
- Université de Toulouse, UPS, CNRS, Centre de Recherches sur la Cognition, Animale, 118 route de Narbonne, 31062 Toulouse Cedex 4 (France)
| | - Andrew J Doig
- Manchester Institute of Biotechnology, Faculty of Life Sciences, The University of Manchester, 131 Princess Street, Manchester M1 7DN (UK).
| | - Philippe Derreumaux
- Laboratoire de Biochimie Théorique, UPR 9080 CNRS, Université Paris Diderot, Sorbonne Paris Cité, IBPC, 13 rue Pierre et Marie Curie, 75005 Paris (France). .,Institut Universitaire de France, IUF, 103 Boulevard Saint-Michel, 75005 Paris (France).
| | - Peter Faller
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 route de Narbonne, BP 44099, 31077 Toulouse Cedex 4 (France) and Université de Toulouse, UPS, INPT, 31077 Toulouse Cedex 4 (France).
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14
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Blindauer CA. Advances in the molecular understanding of biological zinc transport. Chem Commun (Camb) 2015; 51:4544-63. [DOI: 10.1039/c4cc10174j] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Recognition of the importance of zinc homeostasis for health has driven a surge in structural data on major zinc-transporting proteins.
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15
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Abstract
Mammalian metallothioneins (MTs) comprise a Zn3Cys9 cluster in the β domain and a Zn4Cys11 cluster in the α domain. They play a crucial role in storing and donating Zn(2+) ions to target metalloproteins and have been implicated in several diseases, thus understanding how MTs release Zn(2+) is of widespread interest. In this work, we present a strategy to compute the free energy for releasing Zn(2+) from MTs using a combination of classical molecular dynamics (MD) simulations, quantum-mechanics/molecular-mechanics (QM/MM) minimizations, and continuum dielectric calculations. The methodology is shown to reproduce the experimental observations that (1) the Zn-binding sites do not have equal Zn(2+) affinity and (2) the isolated β domain is thermodynamically less stable and releases Zn(2+) faster with oxidizing agents than the isolated α domain. It was used to compute the free energies for Zn(2+) release from the metal cluster in the absence and presence of the protein matrix (protein architecture and coupled protein-water interactions) to yield the respective disulfide-bonded product. The results show the importance of the protein matrix as well as protein dynamics and coupled conformational changes in accounting for the differential Zn(2+)-releasing propensity of the two domains with oxidizing agents.
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Affiliation(s)
- C Satheesan Babu
- Institute of Biomedical Sciences, Academia Sinica , Taipei 115, Taiwan , R.O.C
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16
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Faller P, Hureau C, La Penna G. Metal ions and intrinsically disordered proteins and peptides: from Cu/Zn amyloid-β to general principles. Acc Chem Res 2014; 47:2252-9. [PMID: 24871565 DOI: 10.1021/ar400293h] [Citation(s) in RCA: 200] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The interaction of d-block metal ions (Cu, Zn, Fe, etc.) with intrinsically disordered proteins (IDPs) has gained interest, partly due to their proposed roles in several diseases, mainly neurodegenerative. A prominent member of IDPs is the peptide amyloid-β (Aβ) that aggregates into metal-enriched amyloid plaques, a hallmark of Alzheimer's disease, in which Cu and Zn are bound to Aβ. IDPs are a class of proteins and peptides that lack a unique 3D structure when the protein is isolated. This disordered structure impacts their interaction with metal ions compared with structured metalloproteins. Metalloproteins either have a preorganized metal binding site or fold upon metal binding, resulting in defined 3D structure with a well-defined metal site. In contrast, for Aβ and likely most of the other IDPs, the affinity for Cu(I/II) and Zn(II) is weaker and the interaction is flexible with different coordination sites present. Coordination of Cu(I/II) with Aβ is very dynamic including fast Cu-exchange reactions (milliseconds or less) that are intrapeptidic between different sites as well as interpeptidic. This highly dynamic metal-IDP interaction has a strong impact on reactivity and potential biological role: (i) Due to the low affinity compared with classical metalloproteins, IDPs likely bind metals only at special places or under special conditions. For Aβ, this is likely in the neurons that expel Zn or Cu into the synapse and upon metal dysregulation occurring in Alzheimer's disease. (ii) Amino acid substitutions (mutations) on noncoordinating residues can change drastically the coordination sphere. (iii) Considering the Cu/Zn-Aβ aberrant interaction, therapeutic strategies can be based on removal of Cu/Zn or precluding their binding to the peptide. The latter is very difficult due to the multitude of metal-binding sites, but the fast koff facilitates removal. (iv) The high flexibility of the Cu-Aβ complex results in different conformations with different redox activity. Only some conformations are able to produce reactive oxygen species. (v) Other, more specific catalysis (like enzymes) is very unlikely for Cu/Zn-Aβ. (vi) The Cu/Zn exchange reactions with Aβ are faster than the aggregation process and can hence have a strong impact on this process. In conclusion, the coordination chemistry is fundamentally different for most of IDPs compared with the classical, structured metalloproteins or with (bio)-inorganic complexes. The dynamics is a key parameter to understand this interaction and its potential biological impact.
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Affiliation(s)
- Peter Faller
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 route de Narbonne, BP 44099, Toulouse F-31077 Cedex 4, France
- Université de Toulouse, UPS, INPT, Toulouse F-31077 Cedex 4, France
| | - Christelle Hureau
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 route de Narbonne, BP 44099, Toulouse F-31077 Cedex 4, France
- Université de Toulouse, UPS, INPT, Toulouse F-31077 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, I-50019 Sesto Fiorentino, Firenze, Italy
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17
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McCord MC, Aizenman E. The role of intracellular zinc release in aging, oxidative stress, and Alzheimer's disease. Front Aging Neurosci 2014; 6:77. [PMID: 24860495 PMCID: PMC4028997 DOI: 10.3389/fnagi.2014.00077] [Citation(s) in RCA: 100] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2013] [Accepted: 04/02/2014] [Indexed: 01/26/2023] Open
Abstract
Brain aging is marked by structural, chemical, and genetic changes leading to cognitive decline and impaired neural functioning. Further, aging itself is also a risk factor for a number of neurodegenerative disorders, most notably Alzheimer’s disease (AD). Many of the pathological changes associated with aging and aging-related disorders have been attributed in part to increased and unregulated production of reactive oxygen species (ROS) in the brain. ROS are produced as a physiological byproduct of various cellular processes, and are normally detoxified by enzymes and antioxidants to help maintain neuronal homeostasis. However, cellular injury can cause excessive ROS production, triggering a state of oxidative stress that can lead to neuronal cell death. ROS and intracellular zinc are intimately related, as ROS production can lead to oxidation of proteins that normally bind the metal, thereby causing the liberation of zinc in cytoplasmic compartments. Similarly, not only can zinc impair mitochondrial function, leading to excess ROS production, but it can also activate a variety of extra-mitochondrial ROS-generating signaling cascades. As such, numerous accounts of oxidative neuronal injury by ROS-producing sources appear to also require zinc. We suggest that zinc deregulation is a common, perhaps ubiquitous component of injurious oxidative processes in neurons. This review summarizes current findings on zinc dyshomeostasis-driven signaling cascades in oxidative stress and age-related neurodegeneration, with a focus on AD, in order to highlight the critical role of the intracellular liberation of the metal during oxidative neuronal injury.
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Affiliation(s)
- Meghan C McCord
- Department of Neurobiology, University of Pittsburgh School of Medicine Pittsburgh, PA, USA
| | - Elias Aizenman
- Department of Neurobiology, University of Pittsburgh School of Medicine Pittsburgh, PA, USA
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18
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Du X, Li H, Wang Z, Qiu S, Liu Q, Ni J. Selenoprotein P and selenoprotein M block Zn2+ -mediated Aβ42 aggregation and toxicity. Metallomics 2014; 5:861-70. [PMID: 23652332 DOI: 10.1039/c3mt20282h] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Aggregation and cytotoxicity of the amyloid-β (Aβ) peptide with transition metal ions in neuronal cells have been suggested to be involved in the progression of Alzheimer's disease (AD). A therapeutic strategy to combat this incurable disease is to design chemical agents to target metal-Aβ species. Selenoproteins are a group of special proteins that contain the 21st amino acid Sec in their sequence. Due to the presence of Sec, studies of this group of proteins are basically focused on their roles in regulating redox potential and scavenging reactive oxygen species. Here, we reported that the His-rich domain of selenoprotein P (SelP-H) and the Sec-to-Cys mutant selenoprotein M (SelM') are capable of binding transition metal ions and modulating the Zn(2+)-mediated Aβ aggregation, ROS production and neurotoxicity. SelM' (U48C) and SelP-H were found to coordinate 0.5 and 2 molar equivalents of Zn(2+)/Cd(2+) with micromolar and submicromolar affinities, respectively. Metal binding induced the structural changes in SelP-H and SelM' according to the circular dichorism spectra. Zn(2+) binding to Aβ42 almost completely suppressed Aβ42 fibrillization, which could be significantly restored by SelP-H and SelM', as observed by thioflavin T (ThT) fluorescence and transmission electron microscopy (TEM). Interestingly, both SelP-H and SelM' inhibited Zn(2+)-Aβ42-induced neurotoxicity and the intracellular ROS production in living cells. These studies suggest that SelP and SelM may play certain roles in regulating redox balance as well as metal homeostasis.
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Affiliation(s)
- Xiubo Du
- College of Life Sciences, Shenzhen Key Laboratory of Microbial Genetic Engineering, Shenzhen University, Shenzhen, China
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19
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Greenough MA, Camakaris J, Bush AI. Metal dyshomeostasis and oxidative stress in Alzheimer’s disease. Neurochem Int 2013; 62:540-55. [DOI: 10.1016/j.neuint.2012.08.014] [Citation(s) in RCA: 266] [Impact Index Per Article: 24.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2012] [Revised: 08/13/2012] [Accepted: 08/30/2012] [Indexed: 01/21/2023]
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20
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Manso Y, Carrasco J, Comes G, Meloni G, Adlard PA, Bush AI, Vašák M, Hidalgo J. Characterization of the role of metallothionein-3 in an animal model of Alzheimer's disease. Cell Mol Life Sci 2012; 69:3683-700. [PMID: 22722772 PMCID: PMC11114720 DOI: 10.1007/s00018-012-1047-9] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2012] [Revised: 05/21/2012] [Accepted: 05/31/2012] [Indexed: 01/02/2023]
Abstract
Among the dementias, Alzheimer's disease (AD) is the most commonly diagnosed, but there are still no effective drugs available for its treatment. It has been suggested that metallothionein-3 (MT-3) could be somehow involved in the etiology of AD, and in fact very promising results have been found in in vitro studies, but the role of MT-3 in vivo needs further analysis. In this study, we analyzed the role of MT-3 in a mouse model of AD, Tg2576 mice, which overexpress human Amyloid Precursor Protein (hAPP) with the Swedish mutation. MT-3 deficiency partially rescued the APP-induced mortality of females, and mildly affected APP-induced changes in behavior assessed in the hole-board and plus-maze tests in a gender-dependent manner. Amyloid plaque burden and/or hAPP expression were decreased in the cortex and hippocampus of MT-3-deficient females. Interestingly, exogenously administered Zn(7)MT-3 increased soluble Aβ40 and Aβ42 and amyloid plaques and gliosis, particularly in the cortex, and changed several behavioral traits (increased deambulation and exploration and decreased anxiety). These results highlight that the control of the endogenous production and/or action of MT-3 could represent a powerful therapeutic target in AD.
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Affiliation(s)
- Yasmina Manso
- Unidad de Fisiología Animal, Departamento de Biología Celular, Fisiología e Inmunología, Facultad de Biociencias, Universidad Autónoma de Barcelona, Edificio C, Bellaterra, 08193 Barcelona, Spain
- Institute of Neurosciences, Universitat Autònoma de Barcelona, Bellaterra, 08193 Barcelona, Spain
| | - Javier Carrasco
- Unidad de Fisiología Animal, Departamento de Biología Celular, Fisiología e Inmunología, Facultad de Biociencias, Universidad Autónoma de Barcelona, Edificio C, Bellaterra, 08193 Barcelona, Spain
| | - Gemma Comes
- Unidad de Fisiología Animal, Departamento de Biología Celular, Fisiología e Inmunología, Facultad de Biociencias, Universidad Autónoma de Barcelona, Edificio C, Bellaterra, 08193 Barcelona, Spain
- Institute of Neurosciences, Universitat Autònoma de Barcelona, Bellaterra, 08193 Barcelona, Spain
| | - Gabriele Meloni
- Department of Biochemistry, University of Zürich, 8057 Zurich, Switzerland
- Present Address: Division of Chemistry and Chemical Engineering, Howard Hughes Medical Institute, California Institute of Technology, Pasadena, CA 91125 USA
| | - Paul A. Adlard
- Oxidation Biology Laboratory, The Mental Health Research Institute, The University of Melbourne, Parkville, VIC 3052 Australia
- Synaptic Neurobiology Laboratory, The Mental Health Research Institute, The University of Melbourne, Parkville, VIC 3052 Australia
| | - Ashley I. Bush
- Synaptic Neurobiology Laboratory, The Mental Health Research Institute, The University of Melbourne, Parkville, VIC 3052 Australia
| | - Milan Vašák
- Department of Biochemistry, University of Zürich, 8057 Zurich, Switzerland
| | - Juan Hidalgo
- Unidad de Fisiología Animal, Departamento de Biología Celular, Fisiología e Inmunología, Facultad de Biociencias, Universidad Autónoma de Barcelona, Edificio C, Bellaterra, 08193 Barcelona, Spain
- Institute of Neurosciences, Universitat Autònoma de Barcelona, Bellaterra, 08193 Barcelona, Spain
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21
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Copper, zinc and iron in neurodegenerative diseases (Alzheimer's, Parkinson's and prion diseases). Coord Chem Rev 2012. [DOI: 10.1016/j.ccr.2012.03.013] [Citation(s) in RCA: 306] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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22
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Babula P, Masarik M, Adam V, Eckschlager T, Stiborova M, Trnkova L, Skutkova H, Provaznik I, Hubalek J, Kizek R. Mammalian metallothioneins: properties and functions. Metallomics 2012; 4:739-50. [PMID: 22791193 DOI: 10.1039/c2mt20081c] [Citation(s) in RCA: 179] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Metallothioneins (MT) are a family of ubiquitous proteins, whose role is still discussed in numerous papers, but their affinity to some metal ions is undisputable. These cysteine-rich proteins are connected with antioxidant activity and protective effects on biomolecules against free radicals, especially reactive oxygen species. In this review, the connection between zinc(II) ions, reactive oxygen species, heavy metal ions and metallothioneins is demonstrated with respect to effect of these proteins on cell proliferation and a possible negative role in resistance to heavy metal-based and non-heavy metal-based drugs.
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Affiliation(s)
- Petr Babula
- Central European Institute of Technology, Brno University of Technology, Technicka 3058/10, CZ-616 00 Brno, Czech Republic
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23
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Pedersen JT, Hureau C, Hemmingsen L, Heegaard NHH, Østergaard J, Vašák M, Faller P. Rapid Exchange of Metal between Zn7–Metallothionein-3 and Amyloid-β Peptide Promotes Amyloid-Related Structural Changes. Biochemistry 2012; 51:1697-706. [DOI: 10.1021/bi201774z] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Jeppe T. Pedersen
- Department
of Chemistry, Faculty of Science, University of Copenhagen,
Universitetsparken 5, DK-2100 Copenhagen, Denmark
- CNRS, LCC (Laboratoire
de Chimie de Coordination), 205, route de Narbonne, F-31077 Toulouse,
France, and Université de Toulouse, UPS, INPT, LCC, F-31077 Toulouse, France
- Department of Pharmaceutics and Analytical Chemistry,
Faculty of Pharmaceutical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark
| | - Christelle Hureau
- CNRS, LCC (Laboratoire
de Chimie de Coordination), 205, route de Narbonne, F-31077 Toulouse,
France, and Université de Toulouse, UPS, INPT, LCC, F-31077 Toulouse, France
| | - Lars Hemmingsen
- Department
of Chemistry, Faculty of Science, University of Copenhagen,
Universitetsparken 5, DK-2100 Copenhagen, Denmark
| | - Niels H. H. Heegaard
- Department of Clinical Biochemistry and Immunology, Statens Serum Institut, Artillerivej 5, DK-2300 Copenhagen,
Denmark
| | - Jesper Østergaard
- Department of Pharmaceutics and Analytical Chemistry,
Faculty of Pharmaceutical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark
| | - Milan Vašák
- Department of Biochemistry, University of Zürich, Winterthurerstrasse 190,
8057 Zurich, Switzerland
| | - Peter Faller
- CNRS, LCC (Laboratoire
de Chimie de Coordination), 205, route de Narbonne, F-31077 Toulouse,
France, and Université de Toulouse, UPS, INPT, LCC, F-31077 Toulouse, France
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24
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Alies B, Solari PL, Hureau C, Faller P. Dynamics of ZnII Binding as a Key Feature in the Formation of Amyloid Fibrils by Aβ11-28. Inorg Chem 2011; 51:701-8. [DOI: 10.1021/ic202247m] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Bruno Alies
- Laboratoire
de Chimie de Coordination
(LCC), CNRS, 205 route de Narbonne, 31077
Toulouse, France
- LCC, Université de Toulouse, UPS, INPT, 31077 Toulouse, France
| | - Pier-Lorenzo Solari
- Synchrotron SOLEIL, L’Orme des merisiers BP48, Saint-Aubin, F-91192 Gif-Sur-Yvette
Cedex, France
| | - Christelle Hureau
- Laboratoire
de Chimie de Coordination
(LCC), CNRS, 205 route de Narbonne, 31077
Toulouse, France
- LCC, Université de Toulouse, UPS, INPT, 31077 Toulouse, France
| | - Peter Faller
- Laboratoire
de Chimie de Coordination
(LCC), CNRS, 205 route de Narbonne, 31077
Toulouse, France
- LCC, Université de Toulouse, UPS, INPT, 31077 Toulouse, France
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25
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Maret W. New perspectives of zinc coordination environments in proteins. J Inorg Biochem 2011; 111:110-6. [PMID: 22196021 DOI: 10.1016/j.jinorgbio.2011.11.018] [Citation(s) in RCA: 124] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2011] [Revised: 10/21/2011] [Accepted: 11/08/2011] [Indexed: 11/24/2022]
Abstract
Zinc is more widely used as a cofactor in proteins than any other transition metal ion. In addition to catalytic and structural functions, zinc(II) ions have a role in information transfer and cellular control. They bind transiently when proteins regulate zinc concentrations and re-distribute zinc and when proteins are regulated by zinc. Transient zinc-binding sites employ the same donors of amino acid side chains as catalytic and structural sites but differ in their coordination chemistry that can modulate zinc affinities over at least ten orders of magnitude. Redox activity of the cysteine ligands, multiple binding modes of the oxygen, sulfur and nitrogen donors, and protein conformational changes induce coordination dynamics in zinc sites and zinc ion mobility. Functional annotations of the remarkable variation of coordination environments in zinc proteomes need to consider how the primary coordination spheres interact with protein structure and dynamics, and the adaptation of coordination properties to the biological context in extracellular, cellular, or subcellular locations.
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Affiliation(s)
- Wolfgang Maret
- Metal Metabolism Group, Diabetes and Nutritional Sciences Division, School of Medicine, King's College London, London, UK
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26
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Metallothionein and brain inflammation. J Biol Inorg Chem 2011; 16:1103-13. [PMID: 21678079 DOI: 10.1007/s00775-011-0802-y] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2011] [Accepted: 06/02/2011] [Indexed: 10/18/2022]
Abstract
Since the seminal discoveries of Bert Vallee regarding zinc and metallothioneins (MTs) more than 50 years ago, thousands of studies have been published concerning this fascinating story. One of the most active areas of research is the involvement of these proteins in the inflammatory response in general, and in neuroinflammation in particular. We describe the general aspects of the inflammatory response, highlighting the essential role of the major cytokine interleukin-6, and review briefly the expression and function of MTs in the central nervous system in the context of neuroinflammation. Particular attention is paid to the Tg2576 Alzheimer disease mouse model and the preliminary results obtained in mice into which human Zn(7)MT-2A was injected, which suggest a reversal of the behavioral deficits while enhancing amyloid plaque load and gliosis.
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27
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Vašák M, Meloni G. Chemistry and biology of mammalian metallothioneins. J Biol Inorg Chem 2011; 16:1067-78. [PMID: 21647776 DOI: 10.1007/s00775-011-0799-2] [Citation(s) in RCA: 197] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2011] [Accepted: 05/12/2011] [Indexed: 10/18/2022]
Abstract
Metallothioneins (MTs) are a class of ubiquitously occurring low molecular mass, cysteine- and metal-rich proteins containing sulfur-based metal clusters formed with Zn(II), Cd(II), and Cu(I) ions. In mammals, four distinct MT isoforms designated MT-1 through MT-4 exist. The first discovered MT-1/MT-2 are widely expressed isoforms, whose biosynthesis is inducible by a wide range of stimuli, including metals, drugs, and inflammatory mediators. In contrast, MT-3 and MT-4 are noninducible proteins, with their expression primarily confined to the central nervous system and certain squamous epithelia, respectively. MT-1 through MT-3 have been reported to be secreted, suggesting that they may play different biological roles in the intracellular and extracellular space. Recent reports established that these isoforms play an important protective role in brain injury and metal-linked neurodegenerative diseases. In the postgenomic era, it is becoming increasingly clear that MTs fulfill multiple functions, including the involvement in zinc and copper homeostasis, protection against heavy metal toxicity, and oxidative damage. All mammalian MTs are monomeric proteins, containing two metal-thiolate clusters. In this review, after a brief summary of the historical milestones of the MT-1/MT-2 research, the recent advances in the structure, chemistry, and biological function of MT-3 and MT-4 are discussed.
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Affiliation(s)
- Milan Vašák
- Department of Biochemistry, University of Zurich, Zurich, Switzerland.
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