1
|
Puentes-Díaz N, Chaparro D, Reyes-Marquez V, Morales-Morales D, Flores-Gaspar A, Alí-Torres J. Computational Evaluation of the Potential Pharmacological Activity of Salen-Type Ligands in Alzheimer's Disease. J Alzheimers Dis 2024; 99:S383-S396. [PMID: 37483007 DOI: 10.3233/jad-230542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/25/2023]
Abstract
Background Alzheimer's disease (AD) is the most common form of dementia representing from 60% to 70% of the cases globally. It is a multifactorial disease that, among its many pathological characteristics, has been found to provoke the metal ion dysregulation in the brain, along with an increase in the oxidative stress. There is proof that metallic complexes formed by the amyloid-β peptide (Aβ) and extraneuronal copper can catalyze the production of reactive oxygen species, leading to an increase in oxidative stress, promoting neuronal death. Due to this interaction, bioavailable copper has become an important redox active target to consider within the search protocols of multifunctional agents for AD's treatment. Objective In this study, we examined by using bioinformatics and electronic structure calculations the potential application of 44 salen-type copper chelating ligands and 12 further proposed molecules as possible multifunctional agents in the context of AD. Methods The candidates were evaluated by combining bioinformatic tools and electronic structure calculations, which allowed us to classify the molecules as potential antioxidants, redistributor-like compounds, and the newly proposed suppressor mechanism. Results This evaluation demonstrate that salen-type ligands exhibit properties suitable for interfering in the chain of copper-induced oxidative stress reactions present in AD and potential redistributor and suppressor activity for copper ions. Finally, a novel set of plausible candidates is proposed and evaluated. Conclusion According to the evaluated criteria, a subset of 13 salen-type candidates was found to exhibit promissory pharmacological properties in the AD framework and were classified according to three plausible action mechanisms.
Collapse
Affiliation(s)
- Nicolás Puentes-Díaz
- Departamento de Química, Universidad Nacionalde Colombia -Sede Bogotá, Bogotá, Colombia
| | - Diego Chaparro
- Departamento de Química, Universidad Nacionalde Colombia -Sede Bogotá, Bogotá, Colombia
- Departamento de Química, Universidad Militar Nueva Granada, Cajicá, Colombia
| | - Viviana Reyes-Marquez
- Departamentode Ciencias Químico-Biológicas, Universidad de Sonora, Luis Encinas y Rosales S/N, Hermosillo, México
| | - David Morales-Morales
- Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, Ciudad de México, México
| | - Areli Flores-Gaspar
- Departamento de Química, Universidad Militar Nueva Granada, Cajicá, Colombia
| | - Jorge Alí-Torres
- Departamento de Química, Universidad Nacionalde Colombia -Sede Bogotá, Bogotá, Colombia
| |
Collapse
|
2
|
Puentes-Díaz N, Chaparro D, Morales-Morales D, Alí-Torres J, Flores-Gaspar A. Pincer Ligands as Multifunctional Agents for Alzheimer's Copper Dysregulation and Oxidative Stress: A Computational Evaluation. Chempluschem 2023; 88:e202300405. [PMID: 37756039 DOI: 10.1002/cplu.202300405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Revised: 09/22/2023] [Accepted: 09/26/2023] [Indexed: 09/28/2023]
Abstract
Alzheimer's disease (AD) is the most common form of dementia worldwide, affecting millions of people around the globe. AD is characterized by different pathologies being beta-amyloid (Aβ) plaque formation, metal ion dysregulation, and oxidative stress (OS) central topics under investigation. Copper-Aβ complexes have been shown to induce catalytic hydrogen peroxide formation and increase OS in the brain leading to neuronal death. Pincer-type compounds are tridentate ligands that coordinate metals in a planar fashion whose properties can be tuned via group substitutions, giving rise to many possibilities in catalysis and drug discovery. In this work we evaluated the potential pharmaceutical activity of 26 pincer compounds in AD's copper ion-related oxidative stress framework. In this sense, four key aspects were considered: 1) Lipinski's rule of five, 2) blood-brain barrier permeation, 3) standard reduction potential (SRP) of the formed copper complexes, and 4) the ligand's affinity towards copper cations. The evaluation of these criteria was performed by means of bioinformatic tools and electronic structure calculations at the DFT level of theory. Our results suggest that two compounds from this set are potential antioxidant agents, whereas five of them are promissory distributor-like compounds in the context of AD.
Collapse
Affiliation(s)
- Nicolás Puentes-Díaz
- Department of Chemistry, Universidad Nacional de Colombia, Av. Cra. 30 #45-03, Bogotá
| | - Diego Chaparro
- Department of Chemistry, Universidad Nacional de Colombia, Av. Cra. 30 #45-03, Bogotá
- Department of Chemistry, Universidad Militar Nueva Granada, Kilómetro 2, vía Cajicá-Zipaquira, costado oriental, Cajicá, Colombia
| | - David Morales-Morales
- Institute of Chemistry, Universidad Nacional Autónoma de México, Ciudad de México, 04510, Mexico
| | - Jorge Alí-Torres
- Department of Chemistry, Universidad Nacional de Colombia, Av. Cra. 30 #45-03, Bogotá
| | - Areli Flores-Gaspar
- Department of Chemistry, Universidad Militar Nueva Granada, Kilómetro 2, vía Cajicá-Zipaquira, costado oriental, Cajicá, Colombia
| |
Collapse
|
3
|
Falcone E, Hureau C. Redox processes in Cu-binding proteins: the "in-between" states in intrinsically disordered peptides. Chem Soc Rev 2023; 52:6595-6600. [PMID: 37701947 PMCID: PMC10544051 DOI: 10.1039/d3cs00443k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Indexed: 09/14/2023]
Abstract
We report on a concept that some of us first described a decade ago for pure electron transfer [V. Balland, C. Hureau and J.-M. Savéant, Proc. Natl. Acad. Sci. U. S. A., 2010, 107, 17113]. In the present viewpoint, based on more recent results, we refine and extend this "in-between state" concept to explain the formation of reactive oxygen species by copper ions bound to the amyloid-β (Aβ) peptide involved in Alzheimer's disease. In such intrinsically disordered peptides, the Cu coordination is versatile due to the lack of stable folding and the presence of multiple possible binding anchors. Hence, the Cu(I) and Cu(II) ions do impose their favoured sites, with Cu(I) bound in a linear fashion between two His residues and Cu(II) in a square-based pyramid bound to Asp1 amine and carbonyl groups and two His residues in the equatorial plane. Hence a direct electron transfer is prevented and alternatively an in-between state (IBS) mechanism applies, whose description and analysis with respect to other electron transfer processes is the topic of the present viewpoint.
Collapse
Affiliation(s)
- Enrico Falcone
- Institut de Chimie (UMR 7177), Université de Strasbourg, CNRS, Strasbourg, France
- School of Chemistry, University of Nottingham, Nottingham, UK
| | | |
Collapse
|
4
|
Falcone E, Nobili G, Okafor M, Proux O, Rossi G, Morante S, Faller P, Stellato F. Chasing the Elusive "In-Between" State of the Copper-Amyloid β Complex by X-ray Absorption through Partial Thermal Relaxation after Photoreduction. Angew Chem Int Ed Engl 2023; 62:e202217791. [PMID: 36869617 DOI: 10.1002/anie.202217791] [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: 12/02/2022] [Revised: 03/03/2023] [Accepted: 03/03/2023] [Indexed: 03/05/2023]
Abstract
The redox activity of Cu ions bound to the amyloid-β (Aβ) peptide is implicated as a source of oxidative stress in the context of Alzheimer's disease. In order to explain the efficient redox cycling between CuII -Aβ (distorted square-pyramidal) and CuI -Aβ (digonal) resting states, the existence of a low-populated "in-between" state, prone to bind Cu in both oxidation states, has been postulated. Here, we exploited the partial X-ray induced photoreduction at 10 K, followed by a thermal relaxation at 200 K, to trap and characterize by X-ray Absorption Spectroscopy (XAS) a partially reduced Cu-Aβ1-16 species different from the resting states. Remarkably, the XAS spectrum is well-fitted by a previously proposed model of the "in-between" state, hence providing the first direct spectroscopic characterization of an intermediate state. The present approach could be used to explore and identify the catalytic intermediates of other relevant metal complexes.
Collapse
Affiliation(s)
- Enrico Falcone
- Institut de Chimie (UMR 7177), University of Strasbourg, CNRS, 4 Rue Blaise Pascal, 67081, Strasbourg, France
| | - Germano Nobili
- Università di Roma Tor Vergata, Via della Ricerca Scientifica, 00133, Roma, Italy
- INFN, Sezione di Roma Tor Vergata, Via della Ricerca Scientifica, 00133, Roma, Italy
| | - Michael Okafor
- Institut de Chimie (UMR 7177), University of Strasbourg, CNRS, 4 Rue Blaise Pascal, 67081, Strasbourg, France
| | - Olivier Proux
- Observatoire des Sciences de l'Univers de Grenoble, UMS 832 CNRS-Université Grenoble Alpes, 38041, Grenoble, France
| | - Giancarlo Rossi
- Università di Roma Tor Vergata, Via della Ricerca Scientifica, 00133, Roma, Italy
- INFN, Sezione di Roma Tor Vergata, Via della Ricerca Scientifica, 00133, Roma, Italy
- Centro Fermi, Museo Storico della Fisica e Centro Studi e Ricerche Enrico Fermi, Via Panisperna 89a, 00184, Roma, Italy
| | - Silvia Morante
- Università di Roma Tor Vergata, Via della Ricerca Scientifica, 00133, Roma, Italy
- INFN, Sezione di Roma Tor Vergata, Via della Ricerca Scientifica, 00133, Roma, Italy
| | - Peter Faller
- Institut de Chimie (UMR 7177), University of Strasbourg, CNRS, 4 Rue Blaise Pascal, 67081, Strasbourg, France
- Institut Universitaire de France (IUF), 1 rue Descartes, 75231, Paris, France
| | - Francesco Stellato
- Università di Roma Tor Vergata, Via della Ricerca Scientifica, 00133, Roma, Italy
- INFN, Sezione di Roma Tor Vergata, Via della Ricerca Scientifica, 00133, Roma, Italy
| |
Collapse
|
5
|
Puentes-Díaz N, Chaparro D, Morales-Morales D, Flores-Gaspar A, Alí-Torres J. Role of Metal Cations of Copper, Iron, and Aluminum and Multifunctional Ligands in Alzheimer's Disease: Experimental and Computational Insights. ACS OMEGA 2023; 8:4508-4526. [PMID: 36777601 PMCID: PMC9909689 DOI: 10.1021/acsomega.2c06939] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Accepted: 12/30/2022] [Indexed: 05/15/2023]
Abstract
Alzheimer's disease (AD) is the most common form of dementia, affecting millions of people around the world. Even though the causes of AD are not completely understood due to its multifactorial nature, some neuropathological hallmarks of its development have been related to the high concentration of some metal cations. These roles include the participation of these metal cations in the production of reactive oxygen species, which have been involved in neuronal damage. In order to avoid the increment in the oxidative stress, multifunctional ligands used to coordinate these metal cations have been proposed as a possible treatment to AD. In this review, we present the recent advances in experimental and computational works aiming to understand the role of two redox active and essential transition-metal cations (Cu and Fe) and one nonbiological metal (Al) and the recent proposals on the development of multifunctional ligands to stop or revert the damaging effects promoted by these metal cations.
Collapse
Affiliation(s)
- Nicolás Puentes-Díaz
- Departamento
de Química, Universidad Nacional
de Colombia−Sede Bogotá, Bogotá 11301, Colombia
| | - Diego Chaparro
- Departamento
de Química, Universidad Nacional
de Colombia−Sede Bogotá, Bogotá 11301, Colombia
- Departamento
de Química, Universidad Militar Nueva
Granada, Cajicá 250240, Colombia
| | - David Morales-Morales
- Instituto
de Química, Universidad Nacional Autónoma de México,
Circuito Exterior, Ciudad Universitaria, Ciudad de México 04510, México
| | - Areli Flores-Gaspar
- Departamento
de Química, Universidad Militar Nueva
Granada, Cajicá 250240, Colombia
- Areli Flores-Gaspar − Departamento de Química,
Universidad Militar Nueva
Granada, Cajicá, 250247, Colombia.
| | - Jorge Alí-Torres
- Departamento
de Química, Universidad Nacional
de Colombia−Sede Bogotá, Bogotá 11301, Colombia
- Jorge Alí-Torres − Departamento de Química, Universidad Nacional de
Colombia, Sede Bogotá,11301, Bogotá, Colombia.
| |
Collapse
|
6
|
Arrigoni F, Di Carlo C, Rovetta A, De Gioia L, Zampella G, Bertini L. Superoxide reduction by Cu‐Amyloid Beta peptide complexes. A Density Functional Theory study. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202200245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Federica Arrigoni
- Università degli Studi di Milano-Bicocca: Universita degli Studi di Milano-Bicocca Biotecnology and Biosciences ITALY
| | - Chiara Di Carlo
- Università degli Studi di Milano-Bicocca: Universita degli Studi di Milano-Bicocca Biotecnology and Biosciences ITALY
| | - Alberto Rovetta
- University of Milano–Bicocca University Library: Universita degli Studi di Milano-Bicocca Biotecnology and Biosciences ITALY
| | - Luca De Gioia
- University of Milan–Bicocca: Universita degli Studi di Milano-Bicocca Biotecnology and Biosciences ITALY
| | - Giuseppe Zampella
- University of Milan–Bicocca: Universita degli Studi di Milano-Bicocca Biotecnology and Biosciences ITALY
| | - Luca Bertini
- Universita' degli studi di MIlano-Bicocca Biotecnologie e Bioscienze Piazza della Scienza 2 20127 Milano ITALY
| |
Collapse
|
7
|
Lakey-Beitia J, Burillo AM, Penna GL, Hegde ML, Rao K. Polyphenols as Potential Metal Chelation Compounds Against Alzheimer's Disease. J Alzheimers Dis 2021; 82:S335-S357. [PMID: 32568200 PMCID: PMC7809605 DOI: 10.3233/jad-200185] [Citation(s) in RCA: 59] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Alzheimer's disease (AD) is the most common neurodegenerative disease affecting more than 50 million people worldwide. The pathology of this multifactorial disease is primarily characterized by the formation of amyloid-β (Aβ) aggregates; however, other etiological factors including metal dyshomeostasis, specifically copper (Cu), zinc (Zn), and iron (Fe), play critical role in disease progression. Because these transition metal ions are important for cellular function, their imbalance can cause oxidative stress that leads to cellular death and eventual cognitive decay. Importantly, these transition metal ions can interact with the amyloid-β protein precursor (AβPP) and Aβ42 peptide, affecting Aβ aggregation and increasing its neurotoxicity. Considering how metal dyshomeostasis may substantially contribute to AD, this review discusses polyphenols and the underlying chemical principles that may enable them to act as natural chelators. Furthermore, polyphenols have various therapeutic effects, including antioxidant activity, metal chelation, mitochondrial function, and anti-amyloidogenic activity. These combined therapeutic effects of polyphenols make them strong candidates for a moderate chelation-based therapy for AD.
Collapse
Affiliation(s)
- Johant Lakey-Beitia
- Centre for Biodiversity and Drug Discovery, Instituto de Investigaciones Científicas y Servicios de Alta Tecnología (INDICASAT AIP), Clayton, City of Knowledge, Panama
| | - Andrea M. Burillo
- Centre for Biodiversity and Drug Discovery, Instituto de Investigaciones Científicas y Servicios de Alta Tecnología (INDICASAT AIP), Clayton, City of Knowledge, Panama
| | - Giovanni La Penna
- National Research Council, Institute of Chemistry of Organometallic Compounds, Sesto Fiorentino (FI), Italy
| | - Muralidhar L. Hegde
- Department of Radiation Oncology, Houston Methodist Research Institute, Houston, TX, USA
- Department of Neurosurgery, Center for Neuroregeneration, Houston Methodist Research Institute, Houston, TX, USA
- Weill Medical College of Cornell University, New York, NY, USA
| | - K.S. Rao
- Centre for Neuroscience, Instituto de Investigaciones Científicas y Servicios de Alta Tecnología (INDICASAT AIP), Clayton, City of Knowledge, Panama
- Zhongke Jianlan Medical Institute, Hangzhou, Republic of China
| |
Collapse
|
8
|
Ejaz HW, Wang W, Lang M. Copper Toxicity Links to Pathogenesis of Alzheimer's Disease and Therapeutics Approaches. Int J Mol Sci 2020; 21:E7660. [PMID: 33081348 PMCID: PMC7589751 DOI: 10.3390/ijms21207660] [Citation(s) in RCA: 61] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 09/24/2020] [Accepted: 09/29/2020] [Indexed: 02/07/2023] Open
Abstract
Alzheimer's disease (AD) is an irreversible, age-related progressive neurological disorder, and the most common type of dementia in aged people. Neuropathological lesions of AD are neurofibrillary tangles (NFTs), and senile plaques comprise the accumulated amyloid-beta (Aβ), loaded with metal ions including Cu, Fe, or Zn. Some reports have identified metal dyshomeostasis as a neurotoxic factor of AD, among which Cu ions seem to be a central cationic metal in the formation of plaque and soluble oligomers, and have an essential role in the AD pathology. Cu-Aβ complex catalyzes the generation of reactive oxygen species (ROS) and results in oxidative damage. Several studies have indicated that oxidative stress plays a crucial role in the pathogenesis of AD. The connection of copper levels in AD is still ambiguous, as some researches indicate a Cu deficiency, while others show its higher content in AD, and therefore there is a need to increase and decrease its levels in animal models, respectively, to study which one is the cause. For more than twenty years, many in vitro studies have been devoted to identifying metals' roles in Aβ accumulation, oxidative damage, and neurotoxicity. Towards the end, a short review of the modern therapeutic approach in chelation therapy, with the main focus on Cu ions, is discussed. Despite the lack of strong proofs of clinical advantage so far, the conjecture that using a therapeutic metal chelator is an effective strategy for AD remains popular. However, some recent reports of genetic-regulating copper transporters in AD models have shed light on treating this refractory disease. This review aims to succinctly present a better understanding of Cu ions' current status in several AD features, and some conflicting reports are present herein.
Collapse
Affiliation(s)
- Hafza Wajeeha Ejaz
- CAS Center for Excellence in Biotic Interactions, College of Life Science, University of Chinese Academy of Sciences, Yuquan Road 19, Beijing 100049, China;
| | - Wei Wang
- School of Medical and Health Sciences, Edith Cowan University, Perth WA6027, Australia;
| | - Minglin Lang
- CAS Center for Excellence in Biotic Interactions, College of Life Science, University of Chinese Academy of Sciences, Yuquan Road 19, Beijing 100049, China;
- College of Life Science, Agricultural University of Hebei, Baoding 071000, China
| |
Collapse
|
9
|
Arrigoni F, Rizza F, Tisi R, De Gioia L, Zampella G, Bertini L. On the propagation of the OH radical produced by Cu-amyloid beta peptide model complexes. Insight from molecular modelling. Metallomics 2020; 12:1765-1780. [PMID: 33052996 DOI: 10.1039/d0mt00113a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Oxidative stress and metal dyshomeostasis are considered as crucial factors in the pathogenesis of Alzheimer's disease (AD). Indeed, transition metal ions such as Cu(ii) can generate Reactive Oxygen Species (ROS) via O2 Fenton-like reduction, catalyzed by Cu(ii) coordinated to the Amyloid beta (Aβ) peptide. Despite intensive effort, the mechanisms of ROS-induced molecular damage remain poorly understood. In the present paper, we investigate on the basis of molecular modelling computations the mechanism of OH radical propagation toward the Aβ peptide, starting from the end-product of OH radical generation by Cu(ii)·Aβ. We evaluate (i) the OH oxidative capacity, as well as the energetics of the possible Aβ oxidation target residues, by quantum chemistry Density Functional Theory (DFT) on coordination models of Cu(ii)/OH/Aβ and (ii) the motion of the OH˙ approaching the Aβ target residues by classical Molecular Dynamics (MD) on the full peptide Cu(ii)/OH/Aβ(1-16). The results show that the oxidative capacity of OH coordinated Cu(ii)Aβ is significantly lower than that of the free OH radical and that propagation toward Aβ Asp and His residues is favoured over Tyr residues. These results are discussed on the basis of the recent literature on in vitro Aβ metal-catalyzed oxidation and on the possible implications for the AD oxidative stress mechanism.
Collapse
Affiliation(s)
- Federica Arrigoni
- Department of Biotechnologies and Biosciences, University of Milano-Bicocca, Piazza della Scienza 2, 20126 Milan, Italy.
| | | | | | | | | | | |
Collapse
|
10
|
Arrigoni F, Prosdocimi T, Mollica L, De Gioia L, Zampella G, Bertini L. Copper reduction and dioxygen activation in Cu-amyloid beta peptide complexes: insight from molecular modelling. Metallomics 2019; 10:1618-1630. [PMID: 30345437 DOI: 10.1039/c8mt00216a] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Alzheimer's disease (AD) involves a number of factors including an anomalous interaction of copper with the amyloid peptide (Aβ), inducing oxidative stress with radical oxygen species (ROS) production through a three-step cycle in which O2 is gradually reduced to superoxide, oxygen peroxide and finally OH radicals. The purpose of this work has been to investigate the reactivity of 14 different Cu(ii)-Aβ coordination models with the aim of identifying on an energy basis (Density Functional Theory (DFT) and classical Molecular Dynamics (MD)) the redox competent form(s). Accordingly, we have specifically focused on the first three steps of the cycle, i.e. ascorbate binding to Cu(ii), Cu(ii) → Cu(i) reduction and O2 reduction to O2-. Compared to the recent literature, our results broaden the set of possible redox competent metallopeptide forms responsible for ROS production. Indeed, in addition to the three-coordinated species containing one His ligand, a N-terminal amine group and the carboxylate side chain of the Asp1 residue of Aβ already proposed, we found two other Cu-Aβ coordination modes involving two histidines.
Collapse
Affiliation(s)
- Federica Arrigoni
- Department of Biotechnologies and Biosciences, University of Milano-Bicocca, Piazza della Scienza 2, 20126 Milan, Italy.
| | | | | | | | | | | |
Collapse
|
11
|
Strodel B, Coskuner-Weber O. Transition Metal Ion Interactions with Disordered Amyloid-β Peptides in the Pathogenesis of Alzheimer's Disease: Insights from Computational Chemistry Studies. J Chem Inf Model 2019; 59:1782-1805. [PMID: 30933519 DOI: 10.1021/acs.jcim.8b00983] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Monomers and oligomers of the amyloid-β peptide aggregate to form the fibrils found in the brains of Alzheimer's disease patients. These monomers and oligomers are largely disordered and can interact with transition metal ions, affecting the mechanism and kinetics of amyloid-β aggregation. Due to the disordered nature of amyloid-β, its rapid aggregation, as well as solvent and paramagnetic effects, experimental studies face challenges in the characterization of transition metal ions bound to amyloid-β monomers and oligomers. The details of the coordination chemistry between transition metals and amyloid-β obtained from experiments remain debated. Furthermore, the impact of transition metal ion binding on the monomeric or oligomeric amyloid-β structures and dynamics are still poorly understood. Computational chemistry studies can serve as an important complement to experimental studies and can provide additional knowledge on the binding between amyloid-β and transition metal ions. Many research groups conducted first-principles calculations, ab initio molecular dynamics simulations, quantum mechanics/classical mechanics simulations, and classical molecular dynamics simulations for studying the interplay between transition metal ions and amyloid-β monomers and oligomers. This review summarizes the current understanding of transition metal interactions with amyloid-β obtained from computational chemistry studies. We also emphasize the current view of the coordination chemistry between transition metal ions and amyloid-β. This information represents an important foundation for future metal ion chelator and drug design studies aiming to combat Alzheimer's disease.
Collapse
Affiliation(s)
- Birgit Strodel
- Institute of Complex Systems: Structural Biochemistry (ICS-6) , Forschungszentrum Jülich GmbH , Jülich 52425 , Germany.,Institute of Theoretical and Computational Chemistry , Heinrich Heine University Düsseldorf , Universitätstrasse 1 , Düsseldorf 40225 , Germany
| | - Orkid Coskuner-Weber
- Molecular Biotechnology , Turkish-German University , Sahinkaya Caddesi, No. 86, Beykoz , Istanbul 34820 , Turkey
| |
Collapse
|
12
|
La Penna G, Li MS. Computational models explain how copper binding to amyloid-β peptide oligomers enhances oxidative pathways. Phys Chem Chem Phys 2019; 21:8774-8784. [DOI: 10.1039/c9cp00293f] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Amyloid-β (Aβ) peptides are intrinsically disordered peptides and their aggregation is the major hallmark of Alzheimer's disease (AD) development.
Collapse
Affiliation(s)
- Giovanni La Penna
- National Research Council of Italy (CNR)
- Institute for Chemistry of Organometallic Compounds (ICCOM)
- via Madonna del Piano 10
- 50019 Sesto Fiorentino
- Firenze
| | - Mai Suan Li
- Institute of Physics
- Polish Academy of Sciences
- Al. Lotnikow 32/46
- 02-668 Warsaw
- Poland
| |
Collapse
|
13
|
Pham DQH, Li MS, La Penna G. Copper Binding Induces Polymorphism in Amyloid-β Peptide: Results of Computational Models. J Phys Chem B 2018; 122:7243-7252. [PMID: 29957993 DOI: 10.1021/acs.jpcb.8b03983] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Amyloid-β (Aβ) peptides are intrinsically disordered peptides, and their aggregation is the hallmark of Alzheimer's disease development. The propensity of the Aβ peptide to intermolecular interactions, the latter favoring different types of oligomers and aggregated forms, has been the object of a huge number of studies. Several facts are now established: the presence of large amount of d-block (M) ions (Zn, Cu, and Fe) in the aggregated forms; the 1:1 M/Aβ ratio favors the formation of amorphous aggregates, with an aggregation rate lower than that in the absence of such ions. In particular, statistical models describing the interactions between copper and amyloid peptides are mandatory to explain the relationship between neurodegeneration, copper dyshomeostasis, and overproduction of reactive oxygen species, the latter event occurring with aging. In this work, we show, by replica-exchange molecular dynamics simulations, that a copper ion (Cu2+) bound as in the experimentally observed prevailing coordination enhances the probability of closed structures that hinder the formation of extended intermolecular hydrogen bonds that stabilize fibrillar ordered aggregated forms. On the other hand, this effect enhances the catalytic role of the complex during the lifetime of soluble forms.
Collapse
Affiliation(s)
- Dinh Quoc Huy Pham
- Institute of Physics , Polish Academy of Sciences , Al. Lotnikow 32/46 , 02-668 Warsaw , Poland.,Institute for Computational Science and Technology , 6 Quarter, Linh Trung Ward, Thu Duc District, Ho Chi Minh City 700000 , Vietnam
| | - Mai Suan Li
- Institute of Physics , Polish Academy of Sciences , Al. Lotnikow 32/46 , 02-668 Warsaw , Poland
| | - Giovanni La Penna
- National Research Council Italy (CNR), Institute for Chemistry of Organometallic Compounds (ICCOM) , 50019 Florence , Italy.,Italian Institute for Nuclear Physics (INFN), Section of Roma-Tor Vergata , Rome 00133 , Italy
| |
Collapse
|
14
|
Cheignon C, Tomas M, Bonnefont-Rousselot D, Faller P, Hureau C, Collin F. Oxidative stress and the amyloid beta peptide in Alzheimer's disease. Redox Biol 2018; 14:450-464. [PMID: 29080524 PMCID: PMC5680523 DOI: 10.1016/j.redox.2017.10.014] [Citation(s) in RCA: 1297] [Impact Index Per Article: 216.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Revised: 10/14/2017] [Accepted: 10/17/2017] [Indexed: 01/12/2023] Open
Abstract
Oxidative stress is known to play an important role in the pathogenesis of a number of diseases. In particular, it is linked to the etiology of Alzheimer's disease (AD), an age-related neurodegenerative disease and the most common cause of dementia in the elderly. Histopathological hallmarks of AD are intracellular neurofibrillary tangles and extracellular formation of senile plaques composed of the amyloid-beta peptide (Aβ) in aggregated form along with metal-ions such as copper, iron or zinc. Redox active metal ions, as for example copper, can catalyze the production of Reactive Oxygen Species (ROS) when bound to the amyloid-β (Aβ). The ROS thus produced, in particular the hydroxyl radical which is the most reactive one, may contribute to oxidative damage on both the Aβ peptide itself and on surrounding molecule (proteins, lipids, …). This review highlights the existing link between oxidative stress and AD, and the consequences towards the Aβ peptide and surrounding molecules in terms of oxidative damage. In addition, the implication of metal ions in AD, their interaction with the Aβ peptide and redox properties leading to ROS production are discussed, along with both in vitro and in vivo oxidation of the Aβ peptide, at the molecular level.
Collapse
Affiliation(s)
- C 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
| | - M Tomas
- 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
| | - D Bonnefont-Rousselot
- Department of Metabolic Biochemistry, La Pitié Salpêtrière-Charles Foix University Hospital (AP-HP), Paris, France; Department of Biochemistry, Faculty of Pharmacy, Paris Descartes University, Paris, France; CNRS UMR8258 - INSERM U1022, Faculty of Pharmacy, Paris Descartes University, Paris, France
| | - P Faller
- Biometals and Biology Chemistry, Institut de Chimie (CNRS UMR 7177), University of Strasbourg, 4 rue B. Pascal, 67081 Strasbourg Cedex, France
| | - C 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
| | - F 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.
| |
Collapse
|
15
|
La Penna G, Li MS. Towards High-Throughput Modelling of Copper Reactivity Induced by Structural Disorder in Amyloid Peptides. Chemistry 2018; 24:5259-5270. [DOI: 10.1002/chem.201704654] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2017] [Indexed: 12/26/2022]
Affiliation(s)
- Giovanni La Penna
- National Research Council (CNR); Institute for Chemistry of Organometallic Compounds (ICCOM); via Madonna del Piano 10 50019 Sesto Fiorentino, Firenze Italy
| | - Mai Suan Li
- Polish Academy of Sciences; Institute of Physics; al. Lotników 32/46 02-668 Warsaw Poland
- Institute for Computational Science and Technology, SBI Building, Quang Trung Software City, Tan Chanh Hiep Ward, District 12; Ho Chi Minh City Vietnam
| |
Collapse
|
16
|
Fica-Contreras SM, Shuster SO, Durfee ND, Bowe GJK, Henning NJ, Hill SA, Vrla GD, Stillman DR, Suralik KM, Sandwick RK, Choi S. Glycation of Lys-16 and Arg-5 in amyloid-β and the presence of Cu 2+ play a major role in the oxidative stress mechanism of Alzheimer's disease. J Biol Inorg Chem 2017; 22:1211-1222. [PMID: 29038915 DOI: 10.1007/s00775-017-1497-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2017] [Accepted: 10/09/2017] [Indexed: 01/21/2023]
Abstract
Extensive research has linked the amyloid-beta (Aβ) peptide to neurological dysfunction in Alzheimer's disease (AD). Insoluble Aβ plaques in the AD patient brain contain high concentrations of advanced glycation end-products (AGEs) as well as transition metal ions. This research elucidated the roles of Aβ, sugars, and Cu2+ in the oxidative stress mechanism of AD at the molecular level. Mass spectral (MS) analysis of the reactions of Aβ with two representative sugars, ribose-5-phosphate (R5P) and methylglyoxal (MG), revealed Lys-16 and Arg-5 as the primary glycation sites. Quantitative analysis of superoxide [Formula: see text] production by a cyt c assay showed that Lys-16 generated four times as much [Formula: see text] as Arg-5. Lys-16 and Arg-5 in Aβ1-40 are both adjacent to histidine residues, which are suggested to catalyze glycation. Additionally, Lys-16 is close to the central hydrophobic core (Leu-17-Ala-21) and to His-13, both of which are known to lower the pKa of the residue, leading to increased deprotonation of the amine and an enhanced glycation reactivity compared to Arg-5. Gel electrophoresis results indicated that all three components of AD plaques-Aβ1-40, sugars, and Cu2+-are necessary for DNA damage. It is concluded that the glycation of Aβ1-40 with sugars generates significant amounts of [Formula: see text], owing to the rapid glycation of Lys-16 and Arg-5. In the presence of Cu2+, [Formula: see text] converts to hydroxyl radical (HO·), the source of oxidative stress in AD.
Collapse
Affiliation(s)
| | - Sydney O Shuster
- Department of Chemistry and Biochemistry, Middlebury College, Middlebury, VT, 05753, USA
| | - Nathaniel D Durfee
- Department of Chemistry and Biochemistry, Middlebury College, Middlebury, VT, 05753, USA
| | - Gregory J K Bowe
- Department of Chemistry and Biochemistry, Middlebury College, Middlebury, VT, 05753, USA
| | - Nathaniel J Henning
- Department of Chemistry and Biochemistry, Middlebury College, Middlebury, VT, 05753, USA
| | - Staci A Hill
- Department of Chemistry and Biochemistry, Middlebury College, Middlebury, VT, 05753, USA
| | - Geoffrey D Vrla
- Department of Chemistry and Biochemistry, Middlebury College, Middlebury, VT, 05753, USA
| | - David R Stillman
- Department of Chemistry and Biochemistry, Middlebury College, Middlebury, VT, 05753, USA
| | - Kelly M Suralik
- Department of Chemistry and Biochemistry, Middlebury College, Middlebury, VT, 05753, USA
| | - Roger K Sandwick
- Department of Chemistry and Biochemistry, Middlebury College, Middlebury, VT, 05753, USA
| | - Sunhee Choi
- Department of Chemistry and Biochemistry, Middlebury College, Middlebury, VT, 05753, USA.
| |
Collapse
|
17
|
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.
Collapse
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
| |
Collapse
|
18
|
Yang J, Zhang X, Zhu Y, Lenczowski E, Tian Y, Yang J, Zhang C, Hardt M, Qiao C, Tanzi RE, Moore A, Ye H, Ran C. The double-edged role of copper in the fate of amyloid beta in the presence of anti-oxidants. Chem Sci 2017; 8:6155-6164. [PMID: 28989646 PMCID: PMC5627602 DOI: 10.1039/c7sc01787a] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Accepted: 06/19/2017] [Indexed: 12/13/2022] Open
Abstract
The biological fate of amyloid beta (Aβ) species is a fundamental question in Alzheimer's disease (AD) pathogenesis. The competition between clearance and aggregation of Aβs is critical for the onset of AD. Copper has been widely considered to be an inducer of harmful crosslinking of Aβs, and an important triggering factor for the onset of AD. In this report, however, we present data to show that copper can also be an inducer of Aβ degradation in the presence of a large excess of well-known intrinsic (such as dopamine) or extrinsic (such as vitamin C) anti-oxidants. The degraded fragments were identified using SDS-Page gels, and validated via nanoLC-MS/MS. A tentative mechanism for the degradation was proposed and validated with model peptides. In addition, we performed electrophysiological analysis to investigate the synaptic functions in brain slices, and found that in the presence of a significant excess of vitamin C, Cu(ii) could prevent an Aβ-induced deficit in synaptic transmission in the hippocampus. Collectively, our evidence strongly indicated that a proper combination of copper and anti-oxidants might have a positive effect on the prevention of AD. This double-edged function of copper in AD has been largely overlooked in the past. We believe that our report is very important for fully understanding the function of copper in AD pathology.
Collapse
Affiliation(s)
- Jing Yang
- Molecular Imaging Laboratory , MGH/MIT/HMS Athinoula A. Martinos Center for Biomedical Imaging , Department of Radiology , Massachusetts General Hospital , Harvard Medical School , Room 2301, Building 149, Charlestown , Boston , Massachusetts 02129 , USA . .,College of Pharmaceutical Sciences , Soochow University , Suzhou , 215006 , China
| | - Xueli Zhang
- Molecular Imaging Laboratory , MGH/MIT/HMS Athinoula A. Martinos Center for Biomedical Imaging , Department of Radiology , Massachusetts General Hospital , Harvard Medical School , Room 2301, Building 149, Charlestown , Boston , Massachusetts 02129 , USA . .,Center for Drug Discovery , School of Pharmacy , China Pharmaceutical University , Nanjing , 210009 , China
| | - Yiying Zhu
- Department of Applied Oral Sciences , The Forsyth Institute , Cambridge , MA 02142 , USA
| | - Emily Lenczowski
- Department of Biology , Loyola University Chicago , Chicago , IL 60660 , USA .
| | - Yanli Tian
- Molecular Imaging Laboratory , MGH/MIT/HMS Athinoula A. Martinos Center for Biomedical Imaging , Department of Radiology , Massachusetts General Hospital , Harvard Medical School , Room 2301, Building 149, Charlestown , Boston , Massachusetts 02129 , USA . .,Department of Parasitology , Zhongshan School of Medicine , Sun Yat-Sen University , Guangzhou , 510080 , China
| | - Jian Yang
- Molecular Imaging Laboratory , MGH/MIT/HMS Athinoula A. Martinos Center for Biomedical Imaging , Department of Radiology , Massachusetts General Hospital , Harvard Medical School , Room 2301, Building 149, Charlestown , Boston , Massachusetts 02129 , USA . .,Center for Drug Discovery , School of Pharmacy , China Pharmaceutical University , Nanjing , 210009 , China
| | - Can Zhang
- Alzheimer's Disease Research Unit , Department of Neurology , Massachusetts General Hospital , Building 114 , Charlestown , Massachusetts 02129 , USA
| | - Markus Hardt
- Department of Applied Oral Sciences , The Forsyth Institute , Cambridge , MA 02142 , USA
| | - Chunhua Qiao
- College of Pharmaceutical Sciences , Soochow University , Suzhou , 215006 , China
| | - Rudolph E Tanzi
- Alzheimer's Disease Research Unit , Department of Neurology , Massachusetts General Hospital , Building 114 , Charlestown , Massachusetts 02129 , USA
| | - Anna Moore
- Molecular Imaging Laboratory , MGH/MIT/HMS Athinoula A. Martinos Center for Biomedical Imaging , Department of Radiology , Massachusetts General Hospital , Harvard Medical School , Room 2301, Building 149, Charlestown , Boston , Massachusetts 02129 , USA .
| | - Hui Ye
- Department of Biology , Loyola University Chicago , Chicago , IL 60660 , USA .
| | - Chongzhao Ran
- Molecular Imaging Laboratory , MGH/MIT/HMS Athinoula A. Martinos Center for Biomedical Imaging , Department of Radiology , Massachusetts General Hospital , Harvard Medical School , Room 2301, Building 149, Charlestown , Boston , Massachusetts 02129 , USA .
| |
Collapse
|
19
|
Challenges in studying the structures of metal-amyloid oligomers related to type 2 diabetes, Parkinson's disease, and Alzheimer's disease. Coord Chem Rev 2016. [DOI: 10.1016/j.ccr.2016.04.010] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
|
20
|
Stability of transient Cu+Aβ (1–16) species and influence of coordination and peptide configuration on superoxide formation. Theor Chem Acc 2016. [DOI: 10.1007/s00214-016-1836-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
|
21
|
Reybier K, Ayala S, Alies B, Rodrigues JV, Bustos Rodriguez S, La Penna G, Collin F, Gomes CM, Hureau C, Faller P. Free Superoxide is an Intermediate in the Production of H2O2 by Copper(I)-Aβ Peptide and O2. Angew Chem Int Ed Engl 2015; 55:1085-9. [PMID: 26629876 DOI: 10.1002/anie.201508597] [Citation(s) in RCA: 78] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Indexed: 11/06/2022]
Abstract
Oxidative stress is considered as an important factor and an early event in the etiology of Alzheimer's disease (AD). Cu bound to the peptide amyloid-β (Aβ) is found in AD brains, and Cu-Aβ could contribute to this oxidative stress, as it is able to produce in vitro H2O2 and HO˙ in the presence of oxygen and biological reducing agents such as ascorbate. The mechanism of Cu-Aβ-catalyzed H2O2 production is however not known, although it was proposed that H2O2 is directly formed from O2 via a 2-electron process. Here, we implement an electrochemical setup and use the specificity of superoxide dismutase-1 (SOD1) to show, for the first time, that H2O2 production by Cu-Aβ in the presence of ascorbate occurs mainly via a free O2˙(-) intermediate. This finding radically changes the view on the catalytic mechanism of H2O2 production by Cu-Aβ, and opens the possibility that Cu-Aβ-catalyzed O2˙(-) contributes to oxidative stress in AD, and hence may be of interest.
Collapse
Affiliation(s)
- Karine Reybier
- University of Toulouse, UPS; UMR 152 PHARMA-DEV, 118 route de Narbonne, 31062, Toulouse cedex 9, France. .,IRD, UMR 152, 31062, Toulouse cedex 9, France.
| | - Sara Ayala
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 route de Narbonne, BP 44099, 31077, Toulouse Cedex 4, France.,University of Toulouse, UPS, INPT, 31077, Toulouse Cedex 4, France
| | - Bruno Alies
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 route de Narbonne, BP 44099, 31077, Toulouse Cedex 4, France.,University of Toulouse, UPS, INPT, 31077, Toulouse Cedex 4, France
| | - João V Rodrigues
- Instituto Tecnologia Química e Biológica, Universidade Nova de Lisboa, Oeiras, Portugal.,Harvard University, Department of Chemistry and Chemical Biology, Cambridge, MA, USA
| | - Susana Bustos Rodriguez
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 route de Narbonne, BP 44099, 31077, Toulouse Cedex 4, France.,University of Toulouse, UPS, INPT, 31077, Toulouse Cedex 4, France
| | - Giovanni La Penna
- CNR - National Research Council of Italy, ICCOM - Institute for Chemistry of Organo-Metallic Compounds, via Madonna del Piano 10, 50019 Sesto Fiorentino, Firenze, Italy
| | - Fabrice Collin
- University of Toulouse, UPS; UMR 152 PHARMA-DEV, 118 route de Narbonne, 31062, Toulouse cedex 9, France.,IRD, UMR 152, 31062, Toulouse cedex 9, France.,CNRS, LCC (Laboratoire de Chimie de Coordination), 205 route de Narbonne, BP 44099, 31077, Toulouse Cedex 4, France.,University of Toulouse, UPS, INPT, 31077, Toulouse Cedex 4, France
| | - Cláudio M Gomes
- Instituto Tecnologia Química e Biológica, Universidade Nova de Lisboa, Oeiras, Portugal.,Faculdade de Ciências, Biosystems and Integrative Sciences Institute, Department of Chemistry and Biochemistry, Universidade de Lisboa, Campo Grande, Lisboa, Portugal
| | - Christelle Hureau
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 route de Narbonne, BP 44099, 31077, Toulouse Cedex 4, France.,University of Toulouse, UPS, INPT, 31077, Toulouse Cedex 4, France
| | - Peter Faller
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 route de Narbonne, BP 44099, 31077, Toulouse Cedex 4, France. .,University of Toulouse, UPS, INPT, 31077, Toulouse Cedex 4, France. .,Institute de Chimie (UMR 7177), 4 rue B. Pascal, 67081, Strasbourg, France.
| |
Collapse
|
22
|
Reybier K, Ayala S, Alies B, Rodrigues JV, Bustos Rodriguez S, La Penna G, Collin F, Gomes CM, Hureau C, Faller P. Free Superoxide is an Intermediate in the Production of H
2
O
2
by Copper(I)‐Aβ Peptide and O
2. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201508597] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Karine Reybier
- University of Toulouse, UPS; UMR 152 PHARMA-DEV 118 route de Narbonne 31062 Toulouse cedex 9 France
- IRD, UMR 152 31062 Toulouse cedex 9 France
| | - Sara Ayala
- CNRS, LCC (Laboratoire de Chimie de Coordination) 205 route de Narbonne, BP 44099 31077 Toulouse Cedex 4 France
- University of Toulouse, UPS, INPT 31077 Toulouse Cedex 4 France
| | - Bruno Alies
- CNRS, LCC (Laboratoire de Chimie de Coordination) 205 route de Narbonne, BP 44099 31077 Toulouse Cedex 4 France
- University of Toulouse, UPS, INPT 31077 Toulouse Cedex 4 France
| | - João V. Rodrigues
- Instituto Tecnologia Química e Biológica Universidade Nova de Lisboa Oeiras Portugal
- Harvard University Department of Chemistry and Chemical Biology Cambridge MA USA
| | - Susana Bustos Rodriguez
- CNRS, LCC (Laboratoire de Chimie de Coordination) 205 route de Narbonne, BP 44099 31077 Toulouse Cedex 4 France
- University of Toulouse, UPS, INPT 31077 Toulouse Cedex 4 France
| | - Giovanni La Penna
- CNR – National Research Council of Italy ICCOM – Institute for Chemistry of Organo-Metallic Compounds via Madonna del Piano 10 50019 Sesto Fiorentino Firenze Italy
| | - Fabrice Collin
- University of Toulouse, UPS; UMR 152 PHARMA-DEV 118 route de Narbonne 31062 Toulouse cedex 9 France
- IRD, UMR 152 31062 Toulouse cedex 9 France
- CNRS, LCC (Laboratoire de Chimie de Coordination) 205 route de Narbonne, BP 44099 31077 Toulouse Cedex 4 France
- University of Toulouse, UPS, INPT 31077 Toulouse Cedex 4 France
| | - Cláudio M. Gomes
- Instituto Tecnologia Química e Biológica Universidade Nova de Lisboa Oeiras Portugal
- Faculdade de Ciências, Biosystems and Integrative Sciences Institute Department of Chemistry and Biochemistry Universidade de Lisboa, Campo Grande Lisboa Portugal
| | - Christelle Hureau
- CNRS, LCC (Laboratoire de Chimie de Coordination) 205 route de Narbonne, BP 44099 31077 Toulouse Cedex 4 France
- University of Toulouse, UPS, INPT 31077 Toulouse Cedex 4 France
| | - Peter Faller
- CNRS, LCC (Laboratoire de Chimie de Coordination) 205 route de Narbonne, BP 44099 31077 Toulouse Cedex 4 France
- University of Toulouse, UPS, INPT 31077 Toulouse Cedex 4 France
- Institute de Chimie (UMR 7177) 4 rue B. Pascal 67081 Strasbourg France
| |
Collapse
|