1
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Gómez-Castro CZ, Quintanar L, Vela A. An N-terminal acidic β-sheet domain is responsible for the metal-accumulation properties of amyloid-β protofibrils: a molecular dynamics study. J Biol Inorg Chem 2024; 29:407-425. [PMID: 38811408 PMCID: PMC11186886 DOI: 10.1007/s00775-024-02061-1] [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: 12/20/2023] [Accepted: 04/10/2024] [Indexed: 05/31/2024]
Abstract
The influence of metal ions on the structure of amyloid- β (Aβ) protofibril models was studied through molecular dynamics to explore the molecular mechanisms underlying metal-induced Aβ aggregation relevant in Alzheimer's disease (AD). The models included 36-, 48-, and 188-mers of the Aβ42 sequence and two disease-modifying variants. Primary structural effects were observed at the N-terminal domain, as it became susceptible to the presence of cations. Specially when β-sheets predominate, this motif orients N-terminal acidic residues toward one single face of the β-sheet, resulting in the formation of an acidic region that attracts cations from the media and promotes the folding of the N-terminal region, with implications in amyloid aggregation. The molecular phenotype of the protofibril models based on Aβ variants shows that the AD-causative D7N mutation promotes the formation of N-terminal β-sheets and accumulates more Zn2+, in contrast to the non-amyloidogenic rodent sequence that hinders the β-sheets and is more selective for Na+ over Zn2+ cations. It is proposed that forming an acidic β-sheet domain and accumulating cations is a plausible molecular mechanism connecting the elevated affinity and concentration of metals in Aβ fibrils to their high content of β-sheet structure at the N-terminal sequence.
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Affiliation(s)
- Carlos Z Gómez-Castro
- Conahcyt-Universidad Autónoma del Estado de Hidalgo, Km 4.5 Carr. Pachuca-Tulancingo, Mineral de La Reforma, 42184, Hidalgo, Mexico.
| | - Liliana Quintanar
- Department of Chemistry, Cinvestav, Av. Instituto Politécnico Nacional 2508, CDMX, San Pedro Zacatenco, 07360, Gustavo A. Madero, Mexico.
| | - Alberto Vela
- Department of Chemistry, Cinvestav, Av. Instituto Politécnico Nacional 2508, CDMX, San Pedro Zacatenco, 07360, Gustavo A. Madero, Mexico.
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2
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Martinez Pomier K, Ahmed R, Huang J, Melacini G. Inhibition of toxic metal-alpha synuclein interactions by human serum albumin. Chem Sci 2024; 15:3502-3515. [PMID: 38455030 PMCID: PMC10915811 DOI: 10.1039/d3sc06285f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Accepted: 01/12/2024] [Indexed: 03/09/2024] Open
Abstract
Human serum albumin (HSA), the most abundant protein in plasma and cerebrospinal fluid, not only serves as a crucial carrier of various exogenous and endogenous ligands but also modulates the aggregation of amyloidogenic proteins, including alpha synuclein (αSyn), which is associated with Parkinson's disease and other α-synucleinopathies. HSA decreases αSyn toxicity through the direct binding to monomeric and oligomeric αSyn species. However, it is possible that HSA also sequesters metal ions that otherwise promote aggregation. Cu(ii) ions, for example, enhance αSyn fibrillization in vitro, while also leading to neurotoxicity by generating reactive oxygen species (ROS). However, it is currently unclear if and how HSA affects Cu(ii)-binding to αSyn. Using an integrated set of NMR experiments, we show that HSA is able to chelate Cu(ii) ions from αSyn more efficiently than standard chelators such as EDTA, revealing an unexpected cooperativity between the HSA metal-binding sites. Notably, fatty acid binding to HSA perturbs this cooperativity, thus interfering with the sequestration of Cu(ii) ions from αSyn. We also observed that glycation of HSA diminished Cu(ii)-binding affinity, while largely preserving the degree of cooperativity between the HSA metal-binding sites. Additionally, our results show that Cu(ii)-binding to HSA stabilizes the interactions of HSA with αSyn primarily at two different regions, i.e. the N-terminus, Tyr 39 and the majority of the C-terminus. Our study not only unveils the effect of fatty acid binding and age-related posttranslational modifications, such as glycation, on the neuroprotective mechanisms of HSA, but also highlights the potential of αSyn as a viable NMR-based sensor to investigate HSA-metal interactions.
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Affiliation(s)
| | - Rashik Ahmed
- Department of Chemistry and Chemical Biology, McMaster University ON L8S 4M1 Canada
| | - Jinfeng Huang
- Department of Chemistry and Chemical Biology, McMaster University ON L8S 4M1 Canada
| | - Giuseppe Melacini
- Department of Chemistry and Chemical Biology, McMaster University ON L8S 4M1 Canada
- Department of Biochemistry and Biomedical Sciences, McMaster University Hamilton ON L8S 4M1 Canada
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3
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San Juan JA, Chakarawet K, He Z, Fernandez RL, Stevenson MJ, Harder NHO, Janisse SE, Wang LP, Britt RD, Heffern MC. Copper(II) Affects the Biochemical Behavior of Proinsulin C-peptide by Forming Ternary Complexes with Serum Albumin. J Am Chem Soc 2023. [PMID: 37486968 DOI: 10.1021/jacs.3c04599] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/26/2023]
Abstract
Peptide hormones are essential signaling molecules with therapeutic importance. Identifying regulatory factors that drive their activity gives important insight into their mode of action and clinical development. In this work, we demonstrate the combined impact of Cu(II) and the serum protein albumin on the activity of C-peptide, a 31-mer peptide derived from the same prohormone as insulin. C-peptide exhibits beneficial effects, particularly in diabetic patients, but its clinical use has been hampered by a lack of mechanistic understanding. We show that Cu(II) mediates the formation of ternary complexes between albumin and C-peptide and that the resulting species depend on the order of addition. These ternary complexes notably alter peptide activity, showing differences from the peptide or Cu(II)/peptide complexes alone in redox protection as well as in cellular internalization of the peptide. In standard clinical immunoassays for measuring C-peptide levels, the complexes inflate the quantitation of the peptide, suggesting that such adducts may affect biomarker quantitation. Altogether, our work points to the potential relevance of Cu(II)-linked C-peptide/albumin complexes in the peptide's mechanism of action and application as a biomarker.
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Affiliation(s)
- Jessica A San Juan
- Department of Chemistry, University of California, Davis, 1 Shields Avenue, Davis, California 95616, United States
| | - Khetpakorn Chakarawet
- Department of Chemistry, University of California, Davis, 1 Shields Avenue, Davis, California 95616, United States
| | - Zhecheng He
- Department of Chemistry, University of California, Davis, 1 Shields Avenue, Davis, California 95616, United States
| | - Rebeca L Fernandez
- Department of Chemistry, University of California, Davis, 1 Shields Avenue, Davis, California 95616, United States
| | - Michael J Stevenson
- Department of Chemistry, University of San Francisco, 2130 Fulton Street, San Francisco, California 94117, United States
| | - Nathaniel H O Harder
- Department of Chemistry, University of California, Davis, 1 Shields Avenue, Davis, California 95616, United States
| | - Samuel E Janisse
- Department of Chemistry, University of California, Davis, 1 Shields Avenue, Davis, California 95616, United States
| | - Lee-Ping Wang
- Department of Chemistry, University of California, Davis, 1 Shields Avenue, Davis, California 95616, United States
| | - R David Britt
- Department of Chemistry, University of California, Davis, 1 Shields Avenue, Davis, California 95616, United States
| | - Marie C Heffern
- Department of Chemistry, University of California, Davis, 1 Shields Avenue, Davis, California 95616, United States
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4
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Li G, Jeon CK, Ma M, Jia Y, Zheng Z, Delafield DG, Lu G, Romanova EV, Sweedler JV, Ruotolo BT, Li L. Site-specific chirality-conferred structural compaction differentially mediates the cytotoxicity of Aβ42. Chem Sci 2023; 14:5936-5944. [PMID: 37293657 PMCID: PMC10246695 DOI: 10.1039/d3sc00678f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Accepted: 05/06/2023] [Indexed: 06/10/2023] Open
Abstract
Growing evidence supports the confident association between distinct amyloid beta (Aβ) isoforms and Alzheimer's Disease (AD) pathogenesis. As such, critical investigations seeking to uncover the translational factors contributing to Aβ toxicity represent a venture of significant value. Herein, we comprehensively assess full-length Aβ42 stereochemistry, with a specific focus on models that consider naturally-occurring isomerization of Asp and Ser residues. We customize various forms of d-isomerized Aβ as natural mimics, ranging from fragments containing a single d residue to full length Aβ42 that includes multiple isomerized residues, systematically evaluating their cytotoxicity against a neuronal cell line. Combining multidimensional ion mobility-mass spectrometry experimental data with replica exchange molecular dynamics simulations, we confirm that co-d-epimerization at Asp and Ser residues within Aβ42 in both N-terminal and core regions effectively reduces its cytotoxicity. We provide evidence that this rescuing effect is associated with the differential and domain-specific compaction and remodeling of Aβ42 secondary structure.
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Affiliation(s)
- Gongyu Li
- State Key Laboratory of Pharmaceutical Chemical Biology, Research Center for Analytical Science and Tianjin Key Laboratory of Biosensing and Molecular Recognition, Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University Tianjin 300071 China
- Haihe Laboratory of Sustainable Chemical Transformations Tianjin 300192 China
| | - Chae Kyung Jeon
- Department of Chemistry, University of Michigan Ann Arbor MI 48109 USA
| | - Min Ma
- School of Pharmacy and Department of Chemistry, University of Wisconsin-Madison 777 Highland Ave. Madison WI 53705 USA
| | - Yifei Jia
- State Key Laboratory of Pharmaceutical Chemical Biology, Research Center for Analytical Science and Tianjin Key Laboratory of Biosensing and Molecular Recognition, Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University Tianjin 300071 China
| | - Zhen Zheng
- School of Pharmacy, Tianjin Medical University Tianjin 300070 China
| | - Daniel G Delafield
- School of Pharmacy and Department of Chemistry, University of Wisconsin-Madison 777 Highland Ave. Madison WI 53705 USA
| | - Gaoyuan Lu
- School of Pharmacy and Department of Chemistry, University of Wisconsin-Madison 777 Highland Ave. Madison WI 53705 USA
| | - Elena V Romanova
- Department of Chemistry and The Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign Urbana Illinois 61801 USA
| | - Jonathan V Sweedler
- Department of Chemistry and The Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign Urbana Illinois 61801 USA
| | - Brandon T Ruotolo
- Department of Chemistry, University of Michigan Ann Arbor MI 48109 USA
| | - Lingjun Li
- School of Pharmacy and Department of Chemistry, University of Wisconsin-Madison 777 Highland Ave. Madison WI 53705 USA
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5
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Wang K, Yang J, Yang X, Guo Q, Nie G. Photoelectrochemical nanoprobe for combined monitoring of Cu2+ and β-amyloid peptide. Microchem J 2022. [DOI: 10.1016/j.microc.2022.107952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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6
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Kou Y, Zhao H, Cui D, Han H, Tong Z. Formaldehyde toxicity in age-related neurological dementia. Ageing Res Rev 2022; 73:101512. [PMID: 34798299 DOI: 10.1016/j.arr.2021.101512] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 11/02/2021] [Accepted: 11/08/2021] [Indexed: 02/02/2023]
Abstract
The primordial small gaseous molecules, such as: NO, CO, H2S and formaldehyde (FA) are present in the brains. Whether FA as well as the other molecules participates in brain functions is unclear. Recently, its pathophysiological functions have been investigated. Notably, under physiological conditions, learning activity induces a transient generation of hippocampal FA, which promotes memory formation by enhancing N-methyl-D-aspartate (NMDA)-currents. However, ageing leads to FA accumulation in brain for the dysregulation of FA metabolism; and excessive FA directly impairs memory by inhibiting NMDA-receptor. Especially, in Alzheimer's disease (AD), amyloid-beta (Aβ) accelerates FA accumulation by inactivating alcohol dehydrogenase-5; in turn, FA promotes Aβ oligomerization, fibrillation and tau hyperphosphorylation. Hence, there is a vicious circle encompassing Aβ assembly and FA generation. Even worse, FA induces Aβ deposition in the extracellular space (ECS), which blocks the medicines (dissolved in the interstitial fluid) flowing into the damaged neurons in the deep cortex. However, phototherapy destroys Aβ deposits in the ECS and restores ISF flow. Coenzyme Q10, which scavenges FA, was shown to ameliorate Aβ-induced AD pathological phenotypes, thus suggesting a causative relation between FA toxicity and AD. These findings suggest that the combination of these two methods is a promising strategy for treating AD.
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7
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Kotuniak R, Bal W. Kinetics of Cu(II) complexation by ATCUN/NTS and related peptides: a gold mine of novel ideas for copper biology. Dalton Trans 2021; 51:14-26. [PMID: 34816848 DOI: 10.1039/d1dt02878b] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Cu(II)-peptide complexes are intensely studied as models for biological peptides and proteins and for their direct importance in copper homeostasis and dyshomeostasis in human diseases. In particular, high-affinity ATCUN/NTS (amino-terminal copper and nickel/N-terminal site) motifs present in proteins and peptides are considered as Cu(II) transport agents for copper delivery to cells. The information on the affinities and structures of such complexes derived from steady-state methods appears to be insufficient to resolve the mechanisms of copper trafficking, while kinetic studies have recently shown promise in explaining them. Stopped-flow experiments of Cu(II) complexation to ATCUN/NTS peptides revealed the presence of reaction steps with rates much slower than the diffusion limit due to the formation of novel intermediate species. Herein, the state of the field in Cu(II)-peptide kinetics is reviewed in the context of physiological data, leading to novel ideas in copper biology, together with the discussion of current methodological issues.
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Affiliation(s)
- Radosław Kotuniak
- Institute of Biochemistry and Biophysics, Polish Academy of Science, Pawińskiego 5a, 02-106 Warsaw, Poland.
| | - Wojciech Bal
- Institute of Biochemistry and Biophysics, Polish Academy of Science, Pawińskiego 5a, 02-106 Warsaw, Poland.
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8
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Fei X, Zhang Y, Mei Y, Yue X, Jiang W, Ai L, Yu Y, Luo H, Li H, Luo W, Yang X, Lyv J, He R, Song W, Tong Z. Degradation of FA reduces Aβ neurotoxicity and Alzheimer-related phenotypes. Mol Psychiatry 2021; 26:5578-5591. [PMID: 33328587 DOI: 10.1038/s41380-020-00929-7] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 09/30/2020] [Accepted: 10/21/2020] [Indexed: 02/05/2023]
Abstract
Dysregulation of formaldehyde (FA) has been implicated in the development of Alzheimer's Disease (AD). Elevated FA levels in Alzheimer's patients and animal models are associated with impaired cognitive functions. However, the exact role of FA in AD remains unknown. We now identified that oxidative demethylation at serine8/26 of amyloid-beta protein (Aβ) induced FA generation and FA cross-linked with the lysine28 residue in the β-turn of Aβ monomer to form Aβ dimers, and then accelerated Aβ oligomerization and fibrillogenesis in vitro. However, Aβ42 mutation in serine8/26, lysine28 abolished Aβ self-aggregation. Furthermore, Aβ inhibited the activity of formaldehyde dehydrogenase (FDH), the enzyme for FA degradation, resulting in FA accumulation. In turn, excess of FA stimulated Aβ aggregation both in vitro and in vivo by increasing the formation of Aβ oligomers and fibrils. We found that degradation of FA by formaldehyde scavenger-NaHSO3 or coenzyme Q10 reduced Aβ aggregation and ameliorated the neurotoxicity, and improved the cognitive performance in APP/PS1 mice. Our study provides evidence that endogenous FA is essential for Aβ self-aggregation and scavenging FA could be an effective strategy for treating AD.
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Affiliation(s)
- Xuechao Fei
- Alzheimer's disease Center, Beijing Institute of Brain Disorders, Laboratory of Brain Disorders, Ministry of Science and Technology, Collaborative Innovation Center for Brain Disorders, Capital Medical University, 100069, Beijing, China
| | - Yun Zhang
- Advanced Innovation Center for Human Brain Protection, National Clinical Research Center for Geriatric Disorders, Xuanwu Hospital, Capital Medical University, 100053, Beijing, China
- Townsend Family Laboratories, Department of Psychiatry, The University of British Columbia, 2255 Wesbrook Mall, Vancouver, BC, V6T 1Z3, Canada
| | - Yufei Mei
- Alzheimer's disease Center, Beijing Institute of Brain Disorders, Laboratory of Brain Disorders, Ministry of Science and Technology, Collaborative Innovation Center for Brain Disorders, Capital Medical University, 100069, Beijing, China
- School of Basic Medical Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Xiangpei Yue
- Alzheimer's disease Center, Beijing Institute of Brain Disorders, Laboratory of Brain Disorders, Ministry of Science and Technology, Collaborative Innovation Center for Brain Disorders, Capital Medical University, 100069, Beijing, China
| | - Wenjing Jiang
- Alzheimer's disease Center, Beijing Institute of Brain Disorders, Laboratory of Brain Disorders, Ministry of Science and Technology, Collaborative Innovation Center for Brain Disorders, Capital Medical University, 100069, Beijing, China
- Center for Cognitive Disorders, Beijing Geriatric Hospital, 100095, Beijing, China
| | - Li Ai
- Alzheimer's disease Center, Beijing Institute of Brain Disorders, Laboratory of Brain Disorders, Ministry of Science and Technology, Collaborative Innovation Center for Brain Disorders, Capital Medical University, 100069, Beijing, China
| | - Yan Yu
- Chinese institute of Rehabilitation Science, China Rehabilitation Research Center, Beijing Key Laboratory of Neural Injury and Rehabilitation, 100068, Beijing, China
| | - Hongjun Luo
- Central Laboratory, Shantou University Medical College, Guangdong, 515041, China
| | - Hui Li
- Central Laboratory, Shantou University Medical College, Guangdong, 515041, China
| | - Wenhong Luo
- Central Laboratory, Shantou University Medical College, Guangdong, 515041, China
| | - Xu Yang
- Section of Environmental Biomedicine, Hubei Key Laboratory of Genetic Regulation and Integrative Biology, College of Life Sciences, Central China Normal University, Wuhan, 430079, China
| | - Jihui Lyv
- Center for Cognitive Disorders, Beijing Geriatric Hospital, 100095, Beijing, China
| | - Rongqiao He
- Alzheimer's disease Center, Beijing Institute of Brain Disorders, Laboratory of Brain Disorders, Ministry of Science and Technology, Collaborative Innovation Center for Brain Disorders, Capital Medical University, 100069, Beijing, China
- State Key Lab of Brain and Cognitive Science and Key Lab of Mental Health, IBP, UCAS, Beijing, China
| | - Weihong Song
- Advanced Innovation Center for Human Brain Protection, National Clinical Research Center for Geriatric Disorders, Xuanwu Hospital, Capital Medical University, 100053, Beijing, China.
- Townsend Family Laboratories, Department of Psychiatry, The University of British Columbia, 2255 Wesbrook Mall, Vancouver, BC, V6T 1Z3, Canada.
| | - Zhiqian Tong
- Alzheimer's disease Center, Beijing Institute of Brain Disorders, Laboratory of Brain Disorders, Ministry of Science and Technology, Collaborative Innovation Center for Brain Disorders, Capital Medical University, 100069, Beijing, China.
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Zhao H, Huang X, Tong Z. Formaldehyde-Crosslinked Nontoxic Aβ Monomers to Form Toxic Aβ Dimers and Aggregates: Pathogenicity and Therapeutic Perspectives. ChemMedChem 2021; 16:3376-3390. [PMID: 34396700 DOI: 10.1002/cmdc.202100428] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 08/14/2021] [Indexed: 01/02/2023]
Abstract
Alzheimer's disease (AD) is characterized by the presence of senile plaques in the brain. However, medicines targeting amyloid-beta (Aβ) have not achieved the expected clinical effects. This review focuses on the formation mechanism of the Aβ dimer (the basic unit of oligomers and fibrils) and its tremendous potential as a drug target. Recently, age-associated formaldehyde and Aβ-derived formaldehyde have been found to crosslink the nontoxic Aβ monomer to form the toxic dimers, oligomers and fibrils. Particularly, Aβ-induced formaldehyde accumulation and formaldehyde-promoted Aβ aggregation form a vicious cycle. Subsequently, formaldehyde initiates Aβ toxicity in both the early-and late-onset AD. These facts also explain why AD drugs targeting only Aβ do not have the desired therapeutic effects. Development of the nanoparticle-based medicines targeting both formaldehyde and Aβ dimer is a promising strategy for improving the drug efficacy by penetrating blood-brain barrier and extracellular space into the cortical neurons in AD patients.
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Affiliation(s)
- Hang Zhao
- Institute of Aging, Key Laboratory of Alzheimer's Disease of Zhejiang Province, School of Mental Health, Wenzhou Medical University, Wenzhou, 325035, China
| | - Xuerong Huang
- Wenzhou Medical University Affiliated Hospital 3, Department of Neurology, Wenzhou, 325200, China
| | - Zhiqian Tong
- Institute of Aging, Key Laboratory of Alzheimer's Disease of Zhejiang Province, School of Mental Health, Wenzhou Medical University, Wenzhou, 325035, China
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10
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Banchelli M, Cascella R, D’Andrea C, La Penna G, Li MS, Machetti F, Matteini P, Pizzanelli S. Probing the Structure of Toxic Amyloid-β Oligomers with Electron Spin Resonance and Molecular Modeling. ACS Chem Neurosci 2021; 12:1150-1161. [PMID: 33724783 PMCID: PMC9284516 DOI: 10.1021/acschemneuro.0c00714] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Structural models of the toxic species involved in the development of Alzheimer's disease are of utmost importance to understand the molecular mechanism and to describe early biomarkers of the disease. Among toxic species, soluble oligomers of amyloid-β (Aβ) peptides are particularly important, because they are responsible for spreading cell damages over brain regions, thus rapidly impairing brain functions. In this work we obtain structural information on a carefully prepared Aβ(1-42) sample, representing a toxic state for cell cultures, by combining electron spin resonance spectroscopy and computational models. We exploited the binding of Cu2+ to Aβ(1-42) and used copper as a probe for estimating Cu-Cu distances in the oligomers by applying double electron-electron resonance (DEER) pulse sequence. The DEER trace of this sample displays a unique feature that fits well with structural models of oligomers formed by Cu-cross-linked peptide dimers. Because Cu is bound to the Aβ(1-42) N-terminus, for the first time structural constraints that are missing in reported studies are provided at physiological conditions for the Aβ N-termini. These constraints suggest the Aβ(1-42) dimer as the building block of soluble oligomers, thus changing the scenario for any kinetic model of Aβ(1-42) aggregation.
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Affiliation(s)
- Martina Banchelli
- National Research Council of Italy, Institute of Applied Physics “Nello Carrara”, Sesto Fiorentino, I-50019 FI, Italy
| | - Roberta Cascella
- University of Florence, Department of Experimental and Clinical Biomedical Sciences, I-50134 Firenze, Italy
| | - Cristiano D’Andrea
- National Research Council of Italy, Institute of Applied Physics “Nello Carrara”, Sesto Fiorentino, I-50019 FI, Italy
| | - Giovanni La Penna
- National Research Council of Italy (CNR), Institute of Chemistry of Organometallic Compounds (ICCOM), Sesto Fiorentino, I-50019 FI, Italy
- National Institute for Nuclear Physics (INFN),
Section of Roma-Tor Vergata, I-00133 Roma, Italy
| | - Mai Suan Li
- 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, 700000 Ho Chi Minh City, Vietnam
| | - Fabrizio Machetti
- National Research Council of Italy (CNR), Institute of Chemistry of Organometallic Compounds (ICCOM), Sesto Fiorentino, I-50019 FI, Italy
- University of Florence, Department of Chemistry “Ugo Schiff”, Sesto Fiorentino, I-50019 FI, Italy
| | - Paolo Matteini
- National Research Council of Italy, Institute of Applied Physics “Nello Carrara”, Sesto Fiorentino, I-50019 FI, Italy
| | - Silvia Pizzanelli
- National Research Council of Italy (CNR), Institute of Chemistry of Organometallic Compounds (ICCOM), I-56124 Pisa, Italy
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11
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Molecular basis for chirality-regulated Aβ self-assembly and receptor recognition revealed by ion mobility-mass spectrometry. Nat Commun 2019; 10:5038. [PMID: 31695027 PMCID: PMC6834639 DOI: 10.1038/s41467-019-12346-8] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2019] [Accepted: 09/02/2019] [Indexed: 12/22/2022] Open
Abstract
Despite extensive efforts on probing the mechanism of Alzheimer’s disease (AD) and enormous investments into AD drug development, the lack of effective disease-modifying therapeutics and the complexity of the AD pathogenesis process suggest a great need for further insights into alternative AD drug targets. Herein, we focus on the chiral effects of truncated amyloid beta (Aβ) and offer further structural and molecular evidence for epitope region-specific, chirality-regulated Aβ fragment self-assembly and its potential impact on receptor-recognition. A multidimensional ion mobility-mass spectrometry (IM-MS) analytical platform and in-solution kinetics analysis reveal the comprehensive structural and molecular basis for differential Aβ fragment chiral chemistry, including the differential and cooperative roles of chiral Aβ N-terminal and C-terminal fragments in receptor recognition. Our method is applicable to many other systems and the results may shed light on the potential development of novel AD therapeutic strategies based on targeting the D-isomerized Aβ, rather than natural L-Aβ. Chiral inversion of amino acids is thought to modulate the structure and function of amyloid beta (Aβ) but these processes are poorly understood. Here, the authors develop an ion mobility-mass spectrometry based approach to study chirality-regulated structural features of Aβ fragments and their influence on receptor recognition.
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12
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Effects of Cu(II) on the aggregation of amyloid-β. J Biol Inorg Chem 2019; 24:1197-1215. [PMID: 31602542 DOI: 10.1007/s00775-019-01727-5] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Accepted: 10/01/2019] [Indexed: 12/27/2022]
Abstract
Aberrant aggregation of the Aβ protein is a hallmark of Alzheimer's disease (AD), but no complete characterization of the molecular level pathogenesis has been achieved. A promising hypothesis is that dysfunction of metal ion homeostasis, and consequently, the undesired interaction of metal ions with Aβ, may be central to the development of AD. Qualitatively, most data indicate that Cu(II) induces rapid self-assembly of both Aβ40 and Aβ42 during the initial phase of the aggregation, while at longer time scales fibrillation may occur, depending on the experimental conditions. For Aβ40 and Cu(II):Aβ ≤ 1, most data imply that low concentration of Aβ40 favors nucleation and rapid fibril elongation, while high concentration of Aβ40 favors formation of amorphous aggregates. However, there are conflicting reports on this issue. For Aβ42 and Cu(II):Aβ ≤ 1, there is consensus that the lag time is extended upon addition of Cu(II). For Cu(II):Aβ > 1, the lag time is increased upon interaction with Cu(II), and in most cases fibrillation is not observed, presumably because Cu(II) occupies a second more solvent-exposed binding site, which is more prone to form metal ion-bridged species and cause rapid formation of non-fibrillar aggregates. The interesting N-terminally truncated Aβ11-40 with high affinity for Cu(II), exhibits delay of fibrillation upon addition of 0.4 eq. Cu(II). In our view, there are still problems achieving reproducible results in this field, and we provide a shortlist of some of the pitfalls. Finally, we propose a consensus model for the effects of Cu(II) on the aggregation kinetics of Aβ.
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13
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Siotto M, Squitti R. Copper imbalance in Alzheimer’s disease: Overview of the exchangeable copper component in plasma and the intriguing role albumin plays. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2018.05.020] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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14
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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
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15
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Zhang K, Bai Y, Feng C, Ning G, Ni H, Yu W, Zhao K, Wang B, Hu P. Synthesis and characterization of new H-shaped triphenylene discotic room-temperature liquid crystal tetramers by a copper-free click reaction. NEW J CHEM 2018. [DOI: 10.1039/c7nj02695a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of new H-shaped triphenylene discotic liquid crystal tetramers has been designed and synthesized using a copper-free [3+2] cycloaddition reaction.
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Affiliation(s)
- Kan Zhang
- College of Chemistry and Materials Science
- Sichuan Normal University
- Chengdu
- P. R. China
| | - Yuefeng Bai
- College of Chemistry and Materials Science
- Sichuan Normal University
- Chengdu
- P. R. China
| | - Chun Feng
- College of Chemistry and Materials Science
- Sichuan Normal University
- Chengdu
- P. R. China
| | - Guanghui Ning
- College of Chemistry and Materials Science
- Sichuan Normal University
- Chengdu
- P. R. China
| | - Hailiang Ni
- College of Chemistry and Materials Science
- Sichuan Normal University
- Chengdu
- P. R. China
| | - Wenhao Yu
- College of Chemistry and Materials Science
- Sichuan Normal University
- Chengdu
- P. R. China
| | - Keqing Zhao
- College of Chemistry and Materials Science
- Sichuan Normal University
- Chengdu
- P. R. China
| | - Biqin Wang
- College of Chemistry and Materials Science
- Sichuan Normal University
- Chengdu
- P. R. China
| | - Ping Hu
- College of Chemistry and Materials Science
- Sichuan Normal University
- Chengdu
- P. R. China
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16
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The Efficacy and Pharmacological Mechanism of Zn 7MT3 to Protect against Alzheimer's Disease. Sci Rep 2017; 7:13763. [PMID: 29061973 PMCID: PMC5653791 DOI: 10.1038/s41598-017-12800-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Accepted: 09/15/2017] [Indexed: 11/13/2022] Open
Abstract
Alzheimer’s disease (AD) is one of the leading causes of death for people over 65 years. Worse still, no completely effective therapeutic agent is available so far. One important pathological hallmark of AD is accumulated amyloid-β (Aβ) plaques with dysregulated metal homeostasis. Human metallothionin 3 (MT3), a regulator of metal homeostasis, is downregulated at least 30% in AD brain. So far, some in vitro studies demonstrated its multiple functions related to AD. However, it is a great pity that systematic in vivo studies of MT3 on AD model animals are still a blank so far. In this study, we treated APP/PS1 mice with sustained drug release of Zn7MT3 directly to the central nervous system, and investigated the role and molecular mechanism of Zn7MT3 to protect against AD mice systematically. The results demonstrated that Zn7MT3 can significantly ameliorate cognitive deficits, regulate metal homeostasis, abolish Aβ plaque load, and reduce oxidative stress. Additionally, it has been confirmed that MT3 is penetrable to the blood brain barrier of AD mice. All these results support that Zn7MT3 is an effective AD suppressing agent and has potential for applications in Alzheimer’s disease therapy.
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17
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Branch T, Barahona M, Dodson CA, Ying L. Kinetic Analysis Reveals the Identity of Aβ-Metal Complex Responsible for the Initial Aggregation of Aβ in the Synapse. ACS Chem Neurosci 2017. [PMID: 28621929 PMCID: PMC5609119 DOI: 10.1021/acschemneuro.7b00121] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
![]()
The
mechanism of Aβ aggregation in the absence of metal ions
is well established, yet the role that Zn2+ and Cu2+, the two most studied metal ions, released during neurotransmission,
paly in promoting Aβ aggregation in the vicinity of neuronal
synapses remains elusive. Here we report the kinetics of Zn2+ binding to Aβ and Zn2+/Cu2+ binding
to Aβ-Cu to form ternary complexes under near physiological
conditions (nM Aβ, μM metal ions). We find that these
reactions are several orders of magnitude slower than Cu2+ binding to Aβ. Coupled reaction-diffusion simulations of the
interactions of synaptically released metal ions with Aβ show
that up to a third of Aβ is Cu2+-bound under repetitive
metal ion release, while any other Aβ-metal complexes (including
Aβ-Zn) are insignificant. We therefore conclude that Zn2+ is unlikely to play an important role in the very early
stages (i.e., dimer formation) of Aβ aggregation, contrary to
a widely held view in the subject. We propose that targeting the specific
interactions between Cu2+ and Aβ may be a viable
option in drug development efforts for early stages of AD.
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Affiliation(s)
- Thomas Branch
- Institute of Chemical Biology, ‡Department of Chemistry, §Department of Mathematics, and ∥National Heart
and Lung Institute, Imperial College London, London SW7 2AZ, United Kingdom
| | - Mauricio Barahona
- Institute of Chemical Biology, ‡Department of Chemistry, §Department of Mathematics, and ∥National Heart
and Lung Institute, Imperial College London, London SW7 2AZ, United Kingdom
| | - Charlotte A. Dodson
- Institute of Chemical Biology, ‡Department of Chemistry, §Department of Mathematics, and ∥National Heart
and Lung Institute, Imperial College London, London SW7 2AZ, United Kingdom
| | - Liming Ying
- Institute of Chemical Biology, ‡Department of Chemistry, §Department of Mathematics, and ∥National Heart
and Lung Institute, Imperial College London, London SW7 2AZ, United Kingdom
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18
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Drew SC. The Case for Abandoning Therapeutic Chelation of Copper Ions in Alzheimer's Disease. Front Neurosci 2017; 11:317. [PMID: 28626387 PMCID: PMC5455140 DOI: 10.3389/fnins.2017.00317] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Accepted: 05/18/2017] [Indexed: 12/26/2022] Open
Abstract
The "therapeutic chelation" approach to treating Alzheimer's disease (AD) evolved from the metals hypothesis, with the premise that small molecules can be designed to prevent transition metal-induced amyloid deposition and oxidative stress within the AD brain. Over more than 20 years, countless in vitro studies have been devoted to characterizing metal binding, its effect on Aβ aggregation, ROS production, and in vitro toxicity. Despite a lack of evidence for any clinical benefit, the conjecture that therapeutic chelation is an effective approach for treating AD remains widespread. Here, the author plays the devil's advocate, questioning the experimental evidence, the dogma, and the value of therapeutic chelation, with a major focus on copper ions.
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Affiliation(s)
- Simon C. Drew
- Department of Medicine, Royal Melbourne Hospital, University of MelbourneMelbourne, VIC, Australia
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19
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Xie B, Liu F, Dong X, Wang Y, Liu XM, Sun Y. Modulation effect of acidulated human serum albumin on Cu 2+ -mediated amyloid β-protein aggregation and cytotoxicity under a mildly acidic condition. J Inorg Biochem 2017; 171:67-75. [DOI: 10.1016/j.jinorgbio.2017.03.009] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2016] [Revised: 02/10/2017] [Accepted: 03/19/2017] [Indexed: 12/31/2022]
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20
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Atamas N, Bardik V, Bannikova A, Grishina O, Lugovskoi E, Lavoryk S, Makogonenko Y, Korolovych V, Nerukh D, Paschenko V. The effect of water dynamics on conformation changes of albumin in pre-denaturation state: photon correlation spectroscopy and simulation. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.01.017] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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21
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Ionophoric polyphenols selectively bind Cu2+, display potent antioxidant and anti-amyloidogenic properties, and are non-toxic toward Tetrahymena thermophila. Bioorg Med Chem 2016; 24:3657-70. [DOI: 10.1016/j.bmc.2016.06.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2016] [Revised: 05/30/2016] [Accepted: 06/03/2016] [Indexed: 01/07/2023]
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22
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Mirats A, Alí-Torres J, Rodríguez-Santiago L, Sodupe M, La Penna G. Dioxygen activation in the Cu-amyloid β complex. Phys Chem Chem Phys 2016; 17:27270-4. [PMID: 26427541 DOI: 10.1039/c5cp04025f] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
We investigate, by means of density-functional theory, the binding of dioxygen to Cu(I)-amyloid β (Aβ), one of the first steps in the oxidation of ascorbate by dioxygen. Cu, Aβ, ascorbate and dioxygen are all present in the synapse during neurodegeneration, when the above species can trigger an irreversible oxidative stress inducing the eventual death of neurons. The binding of dioxygen to Cu(I) is possible and its role in dioxygen activation of Cu ligands and of residues in the first coordination sphere is described in atomic detail. Dioxygen is activated when a micro-environment suitable for a square-planar Cu(2+) coordination is present and a negatively charged group like Asp 1 carboxylate takes part in the Cu coordination anti to O2.
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Affiliation(s)
- Andrea Mirats
- Departament de Química, Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain.
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23
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Frączyk T, Zawisza IA, Goch W, Stefaniak E, Drew SC, Bal W. On the ability of CuAβ1-x peptides to form ternary complexes: Neurotransmitter glutamate is a competitor while not a ternary partner. J Inorg Biochem 2016; 158:5-10. [PMID: 26970944 DOI: 10.1016/j.jinorgbio.2016.02.035] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Revised: 02/23/2016] [Accepted: 02/28/2016] [Indexed: 01/21/2023]
Abstract
In the light of conflicting reports on the ability of copper(II) complexes of amyloid beta (Aβ) peptides to form ternary complexes with small molecules co-present in the biological milieu, we performed a study of coordination equilibria in the system containing Cu(II) ions, the Aβ1-16 peptide, glutamic acid and 4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid (2-[4-(2-hydroxyethyl)piperazin-1-yl]ethanesulfonic acid, HEPES) buffer. Using potentiometry, isothermal titration calorimetry (ITC), UV-visible spectroscopy and EPR, we concluded that glutamic acid was not able to form such a ternary complex, but can efficiently compete for the Cu(II) ion with the Aβ peptide at Glu concentrations relevant for the synaptic cleft. We also found that the literature constants for Cu(II) complexes with Glu were overestimated, but this effect was partially compensated by the formation of a ternary Cu(Glu)(HEPES) complex. Our results indicate that small molecules co-present with Cu(II) ions and Aβ peptides in the synaptic cleft are not very likely to enhance Cu(II)/Aβ interactions, but instead should be considered as a Cu(II) buffering system that may help prevent these interactions and participate in Cu(II) clearance from the synaptic cleft.
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Affiliation(s)
- Tomasz Frączyk
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Pawińskiego 5a, 02-106 Warsaw, Poland
| | - Izabela A Zawisza
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Pawińskiego 5a, 02-106 Warsaw, Poland
| | - Wojciech Goch
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Pawińskiego 5a, 02-106 Warsaw, Poland
| | - Ewelina Stefaniak
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Pawińskiego 5a, 02-106 Warsaw, Poland
| | - Simon C Drew
- Florey Department of Neuroscience and Mental Health, The University of Melbourne, Victoria, 3010, Australia
| | - Wojciech Bal
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Pawińskiego 5a, 02-106 Warsaw, Poland.
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24
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Wang C, Cheng F, Xu L, Jia L. HSA targets multiple Aβ42 species and inhibits the seeding-mediated aggregation and cytotoxicity of Aβ42 aggregates. RSC Adv 2016. [DOI: 10.1039/c6ra14590f] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
HSA inhibits Aβ42 fibrillation and cytotoxicity through interfering with different stages of Aβ42 fibrillation and targeting different Aβ42 intermediate aggregates.
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Affiliation(s)
- Conggang Wang
- School of Life Science and Biotechnology
- Dalian University of Technology
- Dalian 116023
- P. R. China
| | - Fang Cheng
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian 116023
- P. R. China
| | - Li Xu
- School of Life Science and Biotechnology
- Dalian University of Technology
- Dalian 116023
- P. R. China
| | - Lingyun Jia
- School of Life Science and Biotechnology
- Dalian University of Technology
- Dalian 116023
- P. R. China
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25
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Yue Y, Liu J, Liu R, Sun Y, Li X, Fan J. The binding affinity of phthalate plasticizers-protein revealed by spectroscopic techniques and molecular modeling. Food Chem Toxicol 2014; 71:244-53. [DOI: 10.1016/j.fct.2014.06.022] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2014] [Accepted: 06/23/2014] [Indexed: 11/26/2022]
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26
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Castellanos MM, Colina CM. Molecular Dynamics Simulations of Human Serum Albumin and Role of Disulfide Bonds. J Phys Chem B 2013; 117:11895-905. [DOI: 10.1021/jp402994r] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Maria Monica Castellanos
- Department of Materials Science
and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Coray M. Colina
- Department of Materials Science
and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
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27
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Binding of transition metal ions to albumin: sites, affinities and rates. Biochim Biophys Acta Gen Subj 2013; 1830:5444-55. [PMID: 23811338 DOI: 10.1016/j.bbagen.2013.06.018] [Citation(s) in RCA: 319] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2013] [Revised: 06/14/2013] [Accepted: 06/17/2013] [Indexed: 01/13/2023]
Abstract
BACKGROUND Serum albumin is the most abundant protein in the blood and cerebrospinal fluid and plays a fundamental role in the distribution of essential transition metal ions in the human body. Human serum albumin (HSA) is an important physiological transporter of the essential metal ions Cu(2+), and Zn(2+) in the bloodstream. Its binding of metals like Ni(2+), Co(2+), or Cd(2+) can occur in vivo, but is only of toxicological relevance. Moreover, HSA is one of the main targets and hence most studied binding protein for metallodrugs based on complexes with Au, Pt and V. SCOPE OF REVIEW We discuss i) the four metal-binding sites so far described on HSA, their localization and metal preference, ii) the binding of the metal ions mentioned above, i.e. their stability constants and association/dissociation rates, their coordination chemistry and their selectivity versus the four binding sites iii) the methodology applied to study issues of items i and ii and iv) oligopeptide models of the N-terminal binding site. MAJOR CONCLUSIONS Albumin has four partially selective metal binding sites with well-defined metal preferences. It is an important regulator of the blood transport of physiological Cu(II) and Zn(II) and toxic Ni(II) and Cd(II). It is also an important target for metal-based drugs containing Pt(II), V(IV)O, and Au(I). GENERAL SIGNIFICANCE The thorough understanding of metal binding properties of serum albumin, including the competition of various metal ions for specific binding sites is important for biomedical issues, such as new disease markers and design of metal-based drugs. This article is part of a Special Issue entitled Serum Albumin.
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28
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Zawisza I, Rózga M, Bal W. Affinity of copper and zinc ions to proteins and peptides related to neurodegenerative conditions (Aβ, APP, α-synuclein, PrP). Coord Chem Rev 2012. [DOI: 10.1016/j.ccr.2012.03.012] [Citation(s) in RCA: 87] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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29
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Structural approaches to probing metal interaction with proteins. J Inorg Biochem 2012; 115:138-47. [DOI: 10.1016/j.jinorgbio.2012.02.015] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2011] [Revised: 02/02/2012] [Accepted: 02/20/2012] [Indexed: 12/13/2022]
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30
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Eskici G, Axelsen PH. Copper and Oxidative Stress in the Pathogenesis of Alzheimer’s Disease. Biochemistry 2012; 51:6289-311. [DOI: 10.1021/bi3006169] [Citation(s) in RCA: 204] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Gözde Eskici
- Departments of Pharmacology, Biochemistry and Biophysics,
and Medicine, University of Pennsylvania, Perelman School of Medicine, Philadelphia, Pennsylvania 19104, United
States
| | - Paul H. Axelsen
- Departments of Pharmacology, Biochemistry and Biophysics,
and Medicine, University of Pennsylvania, Perelman School of Medicine, Philadelphia, Pennsylvania 19104, United
States
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31
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Pramanik D, Sengupta K, Mukherjee S, Dey SG, Dey A. Self-Assembled Monolayers of Aβ peptides on Au Electrodes: An Artificial Platform for Probing the Reactivity of Redox Active Metals and Cofactors Relevant to Alzheimer’s Disease. J Am Chem Soc 2012; 134:12180-9. [DOI: 10.1021/ja303930f] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Debajyoti Pramanik
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, Jadavpur,
Kolkata, India, 700032
| | - Kushal Sengupta
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, Jadavpur,
Kolkata, India, 700032
| | - Soumya Mukherjee
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, Jadavpur,
Kolkata, India, 700032
| | - Somdatta Ghosh Dey
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, Jadavpur,
Kolkata, India, 700032
| | - Abhishek Dey
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, Jadavpur,
Kolkata, India, 700032
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32
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The human tripeptide GHK-Cu in prevention of oxidative stress and degenerative conditions of aging: implications for cognitive health. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2012; 2012:324832. [PMID: 22666519 PMCID: PMC3359723 DOI: 10.1155/2012/324832] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/13/2012] [Accepted: 02/27/2012] [Indexed: 11/25/2022]
Abstract
Oxidative stress, disrupted copper homeostasis, and neuroinflammation due to overproduction of proinflammatory cytokines are considered leading causative factors in development of age-associated neurodegenerative conditions. Recently, a new mechanism of aging—detrimental epigenetic modifications—has emerged. Thus, compounds that possess antioxidant, anti-inflammatory activity as well as compounds capable of restoring copper balance and proper gene functioning may be able to prevent age-associated cognitive decline and ward off many common neurodegenerative conditions. The aim of this paper is to bring attention to a compound with a long history of safe use in wound healing and antiaging skin care. The human tripeptide GHK was discovered in 1973 as an activity in human albumin that caused old human liver tissue to synthesize proteins like younger tissue. It has high affinity for copper ions and easily forms a copper complex or GHK-Cu. In addition, GHK possesses a plethora of other regenerative and protective actions including antioxidant, anti-inflammatory, and wound healing properties. Recent studies revealed its ability to up- and downregulate a large number of human genes including those that are critical for neuronal development and maintenance. We propose GHK tripeptide as a possible therapeutic agent against age-associated neurodegeneration and cognitive decline.
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33
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Sacco C, Skowronsky RA, Gade S, Kenney JM, Spuches AM. Calorimetric investigation of copper(II) binding to Aβ peptides: thermodynamics of coordination plasticity. J Biol Inorg Chem 2012; 17:531-41. [DOI: 10.1007/s00775-012-0874-3] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2011] [Accepted: 01/04/2012] [Indexed: 10/14/2022]
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34
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Li M, Liu Z, Ren J, Qu X. Inhibition of metal-induced amyloid aggregation using light-responsive magnetic nanoparticle prochelator conjugates. Chem Sci 2012. [DOI: 10.1039/c1sc00631b] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
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35
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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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36
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Roberts BR, Ryan TM, Bush AI, Masters CL, Duce JA. The role of metallobiology and amyloid-β peptides in Alzheimer’s disease. J Neurochem 2011; 120 Suppl 1:149-166. [DOI: 10.1111/j.1471-4159.2011.07500.x] [Citation(s) in RCA: 199] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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37
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Trapaidze A, Hureau C, Bal W, Winterhalter M, Faller P. Thermodynamic study of Cu2+ binding to the DAHK and GHK peptides by isothermal titration calorimetry (ITC) with the weaker competitor glycine. J Biol Inorg Chem 2011; 17:37-47. [DOI: 10.1007/s00775-011-0824-5] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2011] [Accepted: 07/21/2011] [Indexed: 10/17/2022]
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38
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Duce JA, Bush AI, Adlard PA. Role of amyloid-β–metal interactions in Alzheimer’s disease. FUTURE NEUROLOGY 2011. [DOI: 10.2217/fnl.11.43] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
There is an evolving field of metallobiology that has begun to describe a key role for bioavailable metals (particularly copper, zinc and iron) in the pathogenesis of Alzheimer’s disease (AD). In particular, there is an apparent failure in metal ion homeostasis, potentially caused by a pathological mislocalization of the metals in the brain, which appears to be an obligatory step in both the precipitation and potentiation of the disease. A number of both preclinical and clinical studies have also provided a strong burden of proof that normalizing metal ion homeostasis represents a valid therapeutic target, and may indeed represent the first disease-modifying strategy for AD. The role of metals in the pathophysiology of AD will be discussed in this article.
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Affiliation(s)
- James A Duce
- The Mental Health Research Institute, 155 Oak Street, Parkville, Victoria 3052, Australia
- Center for Neuroscience, The University of Melbourne, Victoria 3010, Australia
| | - Ashley I Bush
- The Mental Health Research Institute, 155 Oak Street, Parkville, Victoria 3052, Australia
- Department of Pathology, The University of Melbourne, Victoria 3010, Australia
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39
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Déjugnat C, Diat O, Zemb T. Surfactin Self-Assembles into Direct and Reverse Aggregates in Equilibrium and Performs Selective Metal Cation Extraction. Chemphyschem 2011; 12:2138-44. [DOI: 10.1002/cphc.201100094] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2011] [Indexed: 11/06/2022]
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40
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Travaglia A, Arena G, Fattorusso R, Isernia C, La Mendola D, Malgieri G, Nicoletti VG, Rizzarelli E. The Inorganic Perspective of Nerve Growth Factor: Interactions of Cu
2+
and Zn
2+
with the N‐Terminus Fragment of Nerve Growth Factor Encompassing the Recognition Domain of the TrkA Receptor. Chemistry 2011; 17:3726-38. [DOI: 10.1002/chem.201002294] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2010] [Revised: 10/15/2010] [Indexed: 12/27/2022]
Affiliation(s)
- Alessio Travaglia
- Dipartimento di Scienze Chimiche, Università degli Studi di Catania, Viale Andrea Doria 6, 95125 Catania (Italy)
| | - Giuseppe Arena
- Dipartimento di Scienze Chimiche, Università degli Studi di Catania, Viale Andrea Doria 6, 95125 Catania (Italy)
| | - Roberto Fattorusso
- Dipartimento di Scienze Ambientali, Seconda Università di Napoli, Via Vivaldi 43, 81100 Caserta (Italy)
| | - Carla Isernia
- Dipartimento di Scienze Ambientali, Seconda Università di Napoli, Via Vivaldi 43, 81100 Caserta (Italy)
| | - Diego La Mendola
- Istituto di Biostrutture e Bioimmagini‐CNR c/o Dipartimento di Scienze Chimiche, Viale Andrea Doria 6, 95125 Catania (Italy), Fax: (+39) 095‐337678
| | - Gaetano Malgieri
- Dipartimento di Scienze Ambientali, Seconda Università di Napoli, Via Vivaldi 43, 81100 Caserta (Italy)
| | - Vincenzo G. Nicoletti
- Dipartimento di Scienze Chimiche, Università degli Studi di Catania, Viale Andrea Doria 6, 95125 Catania (Italy)
| | - Enrico Rizzarelli
- Dipartimento di Scienze Chimiche, Università degli Studi di Catania, Viale Andrea Doria 6, 95125 Catania (Italy)
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Bandyopadhyay S, Huang X, Lahiri DK, Rogers JT. Novel drug targets based on metallobiology of Alzheimer's disease. Expert Opin Ther Targets 2011; 14:1177-97. [PMID: 20942746 DOI: 10.1517/14728222.2010.525352] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
IMPORTANCE OF THE FIELD Increased localization of Zn, Fe, Cu and Al within the senile plaques (SP) exacerbates amyloid beta (Aβ)-mediated oxidative damage, and acts as catalyst for Aβ aggregation in Alzheimer's disease (AD). Thus, disruption of aberrant metal-peptide interactions via chelation therapy holds considerable promise as a rational therapeutic strategy against Alzheimer's amyloid pathogenesis. AREAS COVERED IN THIS REVIEW The complexities of metal-induced genesis of SP are reviewed. The recent advances in the molecular mechanism of action of metal chelating agents are discussed with critical assessment of their potential to become drugs. WHAT THE READER WILL GAIN Taking into consideration the interaction of metals with the metal-responsive elements on the Alzheimer's amyloid precursor protein (APP), readers will gain understanding of several points to bear in mind when developing a screening campaign for AD-therapeutics. TAKE HOME MESSAGE A functional iron-responsive element (IRE) RNA stem loop in the 5' untranslated region (UTR) of the APP transcript regulates neural APP translation. Desferrioxamine, clioquinol, tetrathiolmolybdate, dimercaptopropanol, VK-28, and natural antioxidants, such as curcumin and ginko biloba need critical evaluation as AD therapeutics. There is a necessity for novel screens (related to metallobiology) to identify therapeutics effective in AD.
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Grasso G, Pietropaolo A, Spoto G, Pappalardo G, Tundo GR, Ciaccio C, Coletta M, Rizzarelli E. Copper(I) and Copper(II) Inhibit Aβ Peptides Proteolysis by Insulin-Degrading Enzyme Differently: Implications for Metallostasis Alteration in Alzheimer’s Disease. Chemistry 2011; 17:2752-62. [DOI: 10.1002/chem.201002809] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2010] [Indexed: 02/02/2023]
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Tõugu V, Tiiman A, Palumaa P. Interactions of Zn(ii) and Cu(ii) ions with Alzheimer's amyloid-beta peptide. Metal ion binding, contribution to fibrillization and toxicity. Metallomics 2011; 3:250-61. [DOI: 10.1039/c0mt00073f] [Citation(s) in RCA: 176] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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Gau BC, Chen H, Zhang Y, Gross ML. Sulfate radical anion as a new reagent for fast photochemical oxidation of proteins. Anal Chem 2010; 82:7821-7. [PMID: 20738105 PMCID: PMC2939269 DOI: 10.1021/ac101760y] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The focus is to expand the original design of fast photochemical oxidation of proteins (FPOP) and introduce SO(4)(-•), generated by 248 nm homolysis of low millimolar levels of persulfate, as a radical reactant in protein footprinting. FPOP is a chemical approach to footprinting proteins and protein complexes by "snapshot" reaction with free radicals. The radical used until now is the OH radical, and it provides a measure of residue-resolved solvent accessibility of the native protein. We show that FPOP can accommodate other reagents, increasing its versatility. The new persulfate FPOP system is a potent, nonspecific, and tunable footprinting method; 3-5 times less persulfate is needed to give the same global levels of modification as seen with OH radicals. Although solvent-exposed His and Tyr residues are more reactive with SO(4)(-•) than with (•)OH, oxidation of apomyoglobin and calmodulin shows that (•)OH probes smaller accessible areas than SO(4)(-•), with the possible exception of histidine. His64, an axial ligand in the heme-binding pocket of apomyoglobin, is substantially up-labeled by SO(4)(-•) relative to (•)OH. Nevertheless, the kinds of modification and residue selectivity for both reagent radicals are strikingly similar. Thus, the choice of these reagents relies on the physical properties, particularly the membrane permeability, of the radical precursors.
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Affiliation(s)
- Brian C. Gau
- Washington University in St. Louis, St. Louis, Missouri 63130
| | - Hao Chen
- Ohio University, Athens, OH 45701
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