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De Santis E, Alleva S, Minicozzi V, Morante S, Stellato F. Probing the Dynamic Landscape: From Static to Time-Resolved X-Ray Absorption Spectroscopy to Investigate Copper Redox Chemistry in Neurodegenerative Disorders. Chempluschem 2024:e202300712. [PMID: 38526934 DOI: 10.1002/cplu.202300712] [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: 12/01/2023] [Revised: 03/22/2024] [Accepted: 03/25/2024] [Indexed: 03/27/2024]
Abstract
Copper (Cu), with its ability to exist in various oxidation states, notably Cu(I) and Cu(II), plays a crucial role in diverse biological redox reactions. This includes its involvement in pathways associated with oxidative stress in neurodegenerative disorders such as Alzheimer's disease, Parkinson's disease, and Transmissible Spongiform Encephalopathies. This paper offers an overview of X-ray Absorption Spectroscopy (XAS) studies designed to elucidate the interactions between Cu ions and proteins or peptides associated with these neurodegenerative diseases. The emphasis lies on XAS specificity, revealing the local coordination environment, and on its sensitivity to Cu oxidation states. Furthermore, the paper focuses on XAS applications targeting the characterization of intermediate reaction states and explores the opportunities arising from recent advancements in time-resolved XAS at ultrabright synchrotron and Free Electron Laser radiation sources.
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Affiliation(s)
- Emiliano De Santis
- Department of Chemistry-BMC, Uppsala University, Box 576, SE-751 23, Uppsala, Sweden
| | - Stefania Alleva
- Department of Physics, University of Rome, Tor Vergata, Rome, 00133, Italy
- INFN, Rome, Tor Vergata, Rome, 00133, Italy
| | - Velia Minicozzi
- Department of Physics, University of Rome, Tor Vergata, Rome, 00133, Italy
- INFN, Rome, Tor Vergata, Rome, 00133, Italy
| | - Silvia Morante
- Department of Physics, University of Rome, Tor Vergata, Rome, 00133, Italy
- INFN, Rome, Tor Vergata, Rome, 00133, Italy
| | - Francesco Stellato
- Department of Physics, University of Rome, Tor Vergata, Rome, 00133, Italy
- INFN, Rome, Tor Vergata, Rome, 00133, Italy
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2
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Han J. Copper trafficking systems in cells: insights into coordination chemistry and toxicity. Dalton Trans 2023; 52:15277-15296. [PMID: 37702384 DOI: 10.1039/d3dt02166a] [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: 09/14/2023]
Abstract
Transition metal ions, such as copper, are indispensable components in the biological system. Copper ions which primarily exist in two major oxidation states Cu(I) and Cu(II) play crucial roles in various cellular processes including antioxidant defense, biosynthesis of neurotransmitters, and energy metabolism, owing to their inherent redox activity. The disturbance in copper homeostasis can contribute to the development of copper metabolism disorders, cancer, and neurodegenerative diseases, highlighting the significance of understanding the copper trafficking system in cellular environments. This review aims to offer a comprehensive overview of copper homeostatic machinery, with an emphasis on the coordination chemistry of copper transporters and trafficking proteins. While copper chaperones and the corresponding metalloenzymes are thoroughly discussed, we also explore the potential existence of low-molecular-mass metal complexes within cellular systems. Furthermore, we summarize the toxicity mechanisms originating from copper deficiency or accumulation, which include the dysregulation of oxidative stress, signaling pathways, signal transduction, and amyloidosis. This perspective review delves into the current knowledge regarding the intricate aspects of the copper trafficking system, providing valuable insights into potential treatment strategies from the standpoint of bioinorganic chemistry.
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Affiliation(s)
- Jiyeon Han
- Department of Applied Chemistry, University of Seoul, Seoul 02504, Republic of Korea.
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3
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He L, Ma H, Song W, Zhou Z, Ma C, Zhang H. Arabidopsis COPT1 copper transporter uses a single histidine to regulate transport activity and protein stability. Int J Biol Macromol 2023; 241:124404. [PMID: 37054854 DOI: 10.1016/j.ijbiomac.2023.124404] [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: 02/10/2023] [Revised: 04/03/2023] [Accepted: 04/06/2023] [Indexed: 04/15/2023]
Abstract
Copper acquisition and subsequent delivery to target proteins are essential for many biological processes. However, the cellular levels of this trace element must be controlled because of its potential toxicity. The COPT1 protein rich in potential metal-binding amino acids functions in high affinity copper uptake at the plasma membrane of Arabidopsis cells. The functional role of these putative metal-binding residues is largely unknown. Through truncations and site-directed mutagenesis, we identified His43, a single residue within the extracellular N-terminal domain as absolutely critical for copper uptake of COPT1. Substitution of this residue with leucine, methionine or cysteine almost inactivated transport function of COPT1, implying that His43 fails to serves as a copper ligand in the regulation of COPT1 activity. Deletion of all extracellular N-terminal metal-binding residues completely blocked copper-stimulated degradation but did not alter the subcellular distribution and multimerization of COPT1. Although mutation of His43 to alanine and serine retained the transporter activity in yeast cells, the mutant protein was unstable and degraded in the proteasome in Arabidopsis cells. Our results demonstrate a pivotal role for the extracellular residue His43 in high affinity copper transport activity, and suggest common molecular mechanisms for regulating both metal transport and protein stability of COPT1.
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Affiliation(s)
- Lifei He
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, Tianjin 300387, China
| | - Hanhan Ma
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, Tianjin 300387, China
| | - Wenhua Song
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, Tianjin 300387, China
| | - Zhongle Zhou
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, Tianjin 300387, China
| | - Chunjie Ma
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, Tianjin 300387, China
| | - Haiyan Zhang
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, Tianjin 300387, China.
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4
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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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5
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Bacchella C, Dell'Acqua S, Nicolis S, Monzani E, Casella L. The reactivity of copper complexes with neuronal peptides promoted by catecholamines and its impact on neurodegeneration. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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6
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Roy M, Nath AK, Pal I, Dey SG. Second Sphere Interactions in Amyloidogenic Diseases. Chem Rev 2022; 122:12132-12206. [PMID: 35471949 DOI: 10.1021/acs.chemrev.1c00941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Amyloids are protein aggregates bearing a highly ordered cross β structural motif, which may be functional but are mostly pathogenic. Their formation, deposition in tissues and consequent organ dysfunction is the central event in amyloidogenic diseases. Such protein aggregation may be brought about by conformational changes, and much attention has been directed toward factors like metal binding, post-translational modifications, mutations of protein etc., which eventually affect the reactivity and cytotoxicity of the associated proteins. Over the past decade, a global effort from different groups working on these misfolded/unfolded proteins/peptides has revealed that the amino acid residues in the second coordination sphere of the active sites of amyloidogenic proteins/peptides cause changes in H-bonding pattern or protein-protein interactions, which dramatically alter the structure and reactivity of these proteins/peptides. These second sphere effects not only determine the binding of transition metals and cofactors, which define the pathology of some of these diseases, but also change the mechanism of redox reactions catalyzed by these proteins/peptides and form the basis of oxidative damage associated with these amyloidogenic diseases. The present review seeks to discuss such second sphere modifications and their ramifications in the etiopathology of some representative amyloidogenic diseases like Alzheimer's disease (AD), type 2 diabetes mellitus (T2Dm), Parkinson's disease (PD), Huntington's disease (HD), and prion diseases.
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Affiliation(s)
- Madhuparna Roy
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B, Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Arnab Kumar Nath
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B, Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Ishita Pal
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B, Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Somdatta Ghosh Dey
- School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B, Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
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7
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Rodríguez EE, Ríos A, Trujano-Ortiz LG, Villegas A, Castañeda-Hernández G, Fernández CO, González FJ, Quintanar L. Comparing the copper binding features of alpha and beta synucleins. J Inorg Biochem 2022; 229:111715. [DOI: 10.1016/j.jinorgbio.2022.111715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 12/10/2021] [Accepted: 01/01/2022] [Indexed: 10/19/2022]
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8
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Cukierman DS, Bodnár N, Diniz R, Nagy L, Kállay C, Rey NA. Full Equilibrium Picture in Aqueous Binary and Ternary Systems Involving Copper(II), 1-Methylimidazole-Containing Hydrazonic Ligands, and the 103-112 Human Prion Protein Fragment. Inorg Chem 2021; 61:723-737. [PMID: 34918515 DOI: 10.1021/acs.inorgchem.1c03598] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In this work, we describe two novel 1-methylimidazole N-acylhydyrazonic ligands and their interaction with copper(II) in solution. Binary systems constituted by each of these hydrazones and the metal ion were studied by potentiometric titrations. The magnitude of their affinities for zinc(II) was also determined for the sake of comparison. Additionally, a full evaluation of the copper(II) chelation profile of the new ligands in ternary systems containing a human prion protein fragment was performed. Mixed ligand complexes comprising the HuPrP103-112 fragment, copper(II) ions, and an N-acylhydrazone were characterized by potentiometry, ultraviolet-visible spectroscopy, and circular dichroism. Some of these species were also identified by electrospray ionization mass spectrometry and unequivocally assigned through their isotopic distribution pattern. To the best of our knowledge, this is the first report concerning the stability of ternary complexes involving a hydrazonic metal-protein interaction modulator, copper, and a peptide. The ability of N-acylhydrazones to prevent peptide oxidation was also examined. Both ligands can partially prevent the formation of the doubly oxidized product, a process mediated by copper(II) ions. Oxidative stress is considered an important hallmark of neurodegenerative diseases such as prion-related spongiform encephalopathies. In this context, active intervention with respect to the deleterious copper-catalyzed methionine oxidation could represent an interesting therapeutic approach.
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Affiliation(s)
- Daphne S Cukierman
- Department of Chemistry, Pontifical Catholic University of Rio de Janeiro, Rio de Janeiro 22451-900, Brazil
| | - Nikolett Bodnár
- Department of Inorganic and Analytical Chemistry, University of Debrecen, Debrecen 4032, Hungary
| | - Renata Diniz
- Department of Chemistry, ICEx, Federal University of Minas Gerais, Belo Horizonte 31270-901, Brazil
| | - Lajos Nagy
- Department of Applied Chemistry, University of Debrecen, Debrecen 4032, Hungary
| | - Csilla Kállay
- Department of Inorganic and Analytical Chemistry, University of Debrecen, Debrecen 4032, Hungary
| | - Nicolás A Rey
- Department of Chemistry, Pontifical Catholic University of Rio de Janeiro, Rio de Janeiro 22451-900, Brazil
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9
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Crestini A, Santilli F, Martellucci S, Carbone E, Sorice M, Piscopo P, Mattei V. Prions and Neurodegenerative Diseases: A Focus on Alzheimer's Disease. J Alzheimers Dis 2021; 85:503-518. [PMID: 34864675 DOI: 10.3233/jad-215171] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Specific protein misfolding and aggregation are mechanisms underlying various neurodegenerative diseases such as prion disease and Alzheimer's disease (AD). The misfolded proteins are involved in prions, amyloid-β (Aβ), tau, and α-synuclein disorders; they share common structural, biological, and biochemical characteristics, as well as similar mechanisms of aggregation and self-propagation. Pathological features of AD include the appearance of plaques consisting of deposition of protein Aβ and neurofibrillary tangles formed by the hyperphosphorylated tau protein. Although it is not clear how protein aggregation leads to AD, we are learning that the cellular prion protein (PrPC) plays an important role in the pathogenesis of AD. Herein, we first examined the pathogenesis of prion and AD with a focus on the contribution of PrPC to the development of AD. We analyzed the mechanisms that lead to the formation of a high affinity bond between Aβ oligomers (AβOs) and PrPC. Also, we studied the role of PrPC as an AβO receptor that initiates an AβO-induced signal cascade involving mGluR5, Fyn, Pyk2, and eEF2K linking Aβ and tau pathologies, resulting in the death of neurons in the central nervous system. Finally, we have described how the PrPC-AβOs interaction can be used as a new potential therapeutic target for the treatment of PrPC-dependent AD.
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Affiliation(s)
- Alessio Crestini
- Department of Neuroscience, Istituto Superiore di Sanità, Rome, Italy
| | - Francesca Santilli
- Biomedicine and Advanced Technologies Rieti Center, "Sabina Universitas", Rieti, Italy.,Department of Experimental Medicine, "Sapienza" University, Rome, Italy
| | - Stefano Martellucci
- Biomedicine and Advanced Technologies Rieti Center, "Sabina Universitas", Rieti, Italy
| | - Elena Carbone
- Department of Neuroscience, Istituto Superiore di Sanità, Rome, Italy
| | - Maurizio Sorice
- Department of Experimental Medicine, "Sapienza" University, Rome, Italy
| | - Paola Piscopo
- Department of Neuroscience, Istituto Superiore di Sanità, Rome, Italy
| | - Vincenzo Mattei
- Biomedicine and Advanced Technologies Rieti Center, "Sabina Universitas", Rieti, Italy.,Department of Experimental Medicine, "Sapienza" University, Rome, Italy
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10
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Posadas Y, López-Guerrero VE, Segovia J, Perez-Cruz C, Quintanar L. Dissecting the copper bioinorganic chemistry of the functional and pathological roles of the prion protein: Relevance in Alzheimer's disease and cancer. Curr Opin Chem Biol 2021; 66:102098. [PMID: 34768088 DOI: 10.1016/j.cbpa.2021.102098] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 10/05/2021] [Accepted: 10/06/2021] [Indexed: 01/11/2023]
Abstract
The cellular prion protein (PrPC) is a metal-binding biomolecule that can interact with different protein partners involved in pivotal physiological processes, such as neurogenesis and neuronal plasticity. Recent studies profile copper and PrPC as important players in the pathological mechanisms of Alzheimer's disease and cancer. Although the copper-PrPC interaction has been characterized extensively, the role of the metal ion in the physiological and pathological roles of PrPC has been barely explored. In this article, we discuss how copper binding and proteolytic processing may impact the ability of PrPC to recruit protein partners for its functional roles. The importance to dissect the role of copper-PrPC interactions in health and disease is also underscored.
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Affiliation(s)
- Yanahi Posadas
- Department of Chemistry, Center for Research and Advanced Studies (Cinvestav), Mexico City, 07350, Mexico; Department of Pharmacology, Center for Research and Advanced Studies (Cinvestav), Mexico City, 07350, Mexico
| | - Victor E López-Guerrero
- Department of Chemistry, Center for Research and Advanced Studies (Cinvestav), Mexico City, 07350, Mexico; Department of Physiology, Biophysics and Neurosciences, Center for Research and Advanced Studies (Cinvestav), Mexico City, 07350, Mexico
| | - José Segovia
- Department of Physiology, Biophysics and Neurosciences, Center for Research and Advanced Studies (Cinvestav), Mexico City, 07350, Mexico
| | - Claudia Perez-Cruz
- Department of Pharmacology, Center for Research and Advanced Studies (Cinvestav), Mexico City, 07350, Mexico
| | - Liliana Quintanar
- Department of Chemistry, Center for Research and Advanced Studies (Cinvestav), Mexico City, 07350, Mexico.
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11
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Prion Protein in Stem Cells: A Lipid Raft Component Involved in the Cellular Differentiation Process. Int J Mol Sci 2020; 21:ijms21114168. [PMID: 32545192 PMCID: PMC7312503 DOI: 10.3390/ijms21114168] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2020] [Revised: 06/08/2020] [Accepted: 06/09/2020] [Indexed: 12/13/2022] Open
Abstract
The prion protein (PrP) is an enigmatic molecule with a pleiotropic effect on different cell types; it is localized stably in lipid raft microdomains and it is able to recruit downstream signal transduction pathways by its interaction with various biochemical partners. Since its discovery, this lipid raft component has been involved in several functions, although most of the publications focused on the pathological role of the protein. Recent studies report a key role of cellular prion protein (PrPC) in physiological processes, including cellular differentiation. Indeed, the PrPC, whose expression is modulated according to the cell differentiation degree, appears to be part of the multimolecular signaling pathways of the neuronal differentiation process. In this review, we aim to summarize the main findings that report the link between PrPC and stem cells.
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12
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Bacchella C, Nicolis S, Dell'Acqua S, Rizzarelli E, Monzani E, Casella L. Membrane Binding Strongly Affecting the Dopamine Reactivity Induced by Copper Prion and Copper/Amyloid-β (Aβ) Peptides. A Ternary Copper/Aβ/Prion Peptide Complex Stabilized and Solubilized in Sodium Dodecyl Sulfate Micelles. Inorg Chem 2019; 59:900-912. [PMID: 31869218 DOI: 10.1021/acs.inorgchem.9b03153] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The combination between dyshomeostatic levels of catecholamine neurotransmitters and redox-active metals such as copper and iron exacerbates the oxidative stress condition that typically affects neurodegenerative diseases. We report a comparative study of the oxidative reactivity of copper complexes with amyloid-β (Aβ40) and the prion peptide fragment 76-114 (PrP76-114), containing the high-affinity binding site, toward dopamine and 4-methylcatechol, in aqueous buffer and in sodium dodecyl sulfate micelles, as a model membrane environment. The competitive oxidative and covalent modifications undergone by the peptides were also evaluated. The high binding affinity of Cu/peptide to micelles and lipid membranes leads to a strong reduction (Aβ40) and quenching (PrP76-114) of the oxidative efficiency of the binary complexes and to a stabilization and redox silencing of the ternary complex CuII/Aβ40/PrP76-114, which is highly reactive in solution. The results improve our understanding of the pathological and protective effects associated with these complexes, depending on the physiological environment.
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Affiliation(s)
- Chiara Bacchella
- Dipartimento di Chimica , Università di Pavia , Via Taramelli 12 , 27100 Pavia , Italy
| | - Stefania Nicolis
- Dipartimento di Chimica , Università di Pavia , Via Taramelli 12 , 27100 Pavia , Italy
| | - Simone Dell'Acqua
- Dipartimento di Chimica , Università di Pavia , Via Taramelli 12 , 27100 Pavia , Italy
| | - Enrico Rizzarelli
- Istituto di Biostrutture e Bioimmagini , Consiglio Nazionale delle Ricerche , Via P. Gaifami 18 , 95125 Catania , Italy
| | - Enrico Monzani
- Dipartimento di Chimica , Università di Pavia , Via Taramelli 12 , 27100 Pavia , Italy
| | - Luigi Casella
- Dipartimento di Chimica , Università di Pavia , Via Taramelli 12 , 27100 Pavia , Italy
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13
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Quantitative prediction of electronic absorption spectra of copper(II)-bioligand systems: Validation and applications. J Inorg Biochem 2019; 204:110953. [PMID: 31816442 DOI: 10.1016/j.jinorgbio.2019.110953] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Revised: 11/21/2019] [Accepted: 11/25/2019] [Indexed: 02/06/2023]
Abstract
The visible region of the electronic absorption spectra of Cu(II) complexes was studied by time-dependent density functional theory (TD-DFT). The performance of twelve functionals in the prediction of absorption maxima (λmax) was tested on eleven compounds with different geometry, donors and charge. The ranking of the functionals for λmax was determined in terms of mean absolute percent deviation (MAPD) and standard deviation (SD) and it is as follows: BHandHLYP > M06 ≫ CAM-B3LYP ≫ MPW1PW91 ~ B1LYP ~ BLYP > HSE06 ~ B3LYP > B3P86 ~ ω-B97x-D ≫ TPSSh ≫ M06-2X (MAPD) and BHandHLYP > M06 ~ HSE06 > ω-B97x-D ~ CAM-B3LYP ~ MPW1PW91 > B1LYP ~ B3LYP > B3P86 > BLYP ≫ TPSSh ≫ M06-2X (SD). With BHandHLYP functional the MAPD is 3.1% and SD is 2.3%, while with M06 the MAPD is 3.7% and SD is 3.7%. The protocol validated in the first step of the study was applied to: i) calculate the number of transitions in the spectra and relate them to the geometry of Cu(II) species; ii) determine the coordination of axial water(s); iii) predict the electronic spectra of the systems where Cu(II) is bound to human serum albumin (HSA) and to the regions 94-97 and 108-112 of prion protein (PrP). The results indicate that the proposed computational protocol allows a successful prediction of the electronic spectra of Cu(II) species and to relate an experimental spectrum to a specific structure.
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14
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Structural Determinants of the Prion Protein N-Terminus and Its Adducts with Copper Ions. Int J Mol Sci 2018; 20:ijms20010018. [PMID: 30577569 PMCID: PMC6337743 DOI: 10.3390/ijms20010018] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 12/17/2018] [Accepted: 12/18/2018] [Indexed: 12/24/2022] Open
Abstract
The N-terminus of the prion protein is a large intrinsically disordered region encompassing approximately 125 amino acids. In this paper, we review its structural and functional properties, with a particular emphasis on its binding to copper ions. The latter is exploited by the region’s conformational flexibility to yield a variety of biological functions. Disease-linked mutations and proteolytic processing of the protein can impact its copper-binding properties, with important structural and functional implications, both in health and disease progression.
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15
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Sánchez-López C, Rivillas-Acevedo L, Cruz-Vásquez O, Quintanar L. Methionine 109 plays a key role in Cu(II) binding to His111 in the 92–115 fragment of the human prion protein. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2017.09.046] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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16
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Dell'Acqua S, Bacchella C, Monzani E, Nicolis S, Di Natale G, Rizzarelli E, Casella L. Prion Peptides Are Extremely Sensitive to Copper Induced Oxidative Stress. Inorg Chem 2017; 56:11317-11325. [PMID: 28846410 DOI: 10.1021/acs.inorgchem.7b01757] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Copper(II) binding to prion peptides does not prevent Cu redox cycling and formation of reactive oxygen species (ROS) in the presence of reducing agents. The toxic effects of these species are exacerbated in the presence of catecholamines, indicating that dysfunction of catecholamine vesicular sequestration or recovery after synaptic release is a dangerous amplifier of Cu induced oxidative stress. Cu bound to prion peptides including the high affinity site involving histidines adjacent to the octarepeats exhibits marked catalytic activity toward dopamine and 4-methylcatechol. The resulting quinone oxidation products undergo parallel oligomerization and endogenous peptide modification yielding catechol adducts at the histidine binding ligands. These modifications add to the more common oxidation of Met and His residues produced by ROS. Derivatization of Cu-prion peptides is much faster than that undergone by Cu-β-amyloid and Cu-α-synuclein complexes in the same conditions.
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Affiliation(s)
- Simone Dell'Acqua
- Dipartimento di Chimica, Università di Pavia , Via Taramelli 12, 27100 Pavia, Italy
| | - Chiara Bacchella
- Dipartimento di Chimica, Università di Pavia , Via Taramelli 12, 27100 Pavia, Italy
| | - Enrico Monzani
- Dipartimento di Chimica, Università di Pavia , Via Taramelli 12, 27100 Pavia, Italy
| | - Stefania Nicolis
- Dipartimento di Chimica, Università di Pavia , Via Taramelli 12, 27100 Pavia, Italy
| | - Giuseppe Di Natale
- Istituto di Biostrutture e Bioimmagini, Consiglio Nazionale delle Ricerche , Via P. Gaifami 18, Catania, Italy
| | - Enrico Rizzarelli
- Istituto di Biostrutture e Bioimmagini, Consiglio Nazionale delle Ricerche , Via P. Gaifami 18, Catania, Italy
| | - Luigi Casella
- Dipartimento di Chimica, Università di Pavia , Via Taramelli 12, 27100 Pavia, Italy
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17
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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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18
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Cowley RE, Cirera J, Qayyum MF, Rokhsana D, Hedman B, Hodgson KO, Dooley DM, Solomon EI. Structure of the Reduced Copper Active Site in Preprocessed Galactose Oxidase: Ligand Tuning for One-Electron O 2 Activation in Cofactor Biogenesis. J Am Chem Soc 2016; 138:13219-13229. [PMID: 27626829 DOI: 10.1021/jacs.6b05792] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Galactose oxidase (GO) is a copper-dependent enzyme that accomplishes 2e- substrate oxidation by pairing a single copper with an unusual cysteinylated tyrosine (Cys-Tyr) redox cofactor. Previous studies have demonstrated that the post-translational biogenesis of Cys-Tyr is copper- and O2-dependent, resulting in a self-processing enzyme system. To investigate the mechanism of cofactor biogenesis in GO, the active-site structure of Cu(I)-loaded GO was determined using X-ray absorption near edge structure (XANES) and extended X-ray absorption fine structure (EXAFS) spectroscopy, and density-functional theory (DFT) calculations were performed on this model. Our results show that the active-site tyrosine lowers the Cu potential to enable the thermodynamically unfavorable 1e- reduction of O2, and the resulting Cu(II)-O2•- is activated toward H atom abstraction from cysteine. The final step of biogenesis is a concerted reaction involving coordinated Tyr ring deprotonation where Cu(II) coordination enables formation of the Cys-Tyr cross-link. These spectroscopic and computational results highlight the role of the Cu(I) in enabling O2 activation by 1e- and the role of the resulting Cu(II) in enabling substrate activation for biogenesis.
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Affiliation(s)
- Ryan E Cowley
- Department of Chemistry, Stanford University , Stanford, California 94305, United States
| | - Jordi Cirera
- Department of Chemistry, Stanford University , Stanford, California 94305, United States
| | - Munzarin F Qayyum
- Department of Chemistry, Stanford University , Stanford, California 94305, United States
| | - Dalia Rokhsana
- Department of Chemistry and Biochemistry, Montana State University , Bozeman, Montana 59717, United States
| | - Britt Hedman
- Department of Chemistry, Stanford University , Stanford, California 94305, United States.,Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Stanford University , Menlo Park, California 94025, United States
| | - Keith O Hodgson
- Department of Chemistry, Stanford University , Stanford, California 94305, United States.,Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Stanford University , Menlo Park, California 94025, United States
| | - David M Dooley
- Department of Chemistry and Biochemistry, Montana State University , Bozeman, Montana 59717, United States.,University of Rhode Island , Kingston, Rhode Island 02881, United States
| | - Edward I Solomon
- Department of Chemistry, Stanford University , Stanford, California 94305, United States.,Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Stanford University , Menlo Park, California 94025, United States
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