1
|
Stehle J, Hülsmann M, Godt A, Drescher M, Azarkh M. Evaluation of Copper(II) Transfer between Amyloid-beta Peptides by Relaxation-Induced Dipolar Modulation Enhancement (RIDME). Chemphyschem 2024; 25:e202300928. [PMID: 38285014 DOI: 10.1002/cphc.202300928] [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: 12/11/2023] [Revised: 01/25/2024] [Accepted: 01/26/2024] [Indexed: 01/30/2024]
Abstract
In the brains of Alzheimer's disease patients, fibrillar aggregates containing amyloid-beta (Aβ) peptides are found, along with elevated concentrations of Cu(II) ions. The aggregation pathways of Aβ peptides can be modulated by Cu(II) ions and is determined by the formation and nature of the Cu(II)-Aβ complex. If spin-labeled, the Cu(II)-Aβ complex contains two dipolar coupled paramagnetic centers, the spin label and the Cu(II) ion. Measurement of the dipolar coupling between these paramagnetic centers by relaxation-induced dipolar modulation enhancement (RIDME) allows to monitor the complex formation and thus opens a way to follow the Cu(II) transfer between peptides if a mixture of wild-type and spin-labeled ones is used. We evaluate this approach for a specific Cu(II)-Aβ complex, the aggregation-inert Component II. The kinetics of the Cu(II) transfer can be resolved by performing RIDME in a time-dependent manner. A temporal resolution of seconds has been achieved, with the potential to reach milliseconds, using a rapid-freeze quench device to stop the Cu(II) transfer in solution after defined incubation times.
Collapse
Affiliation(s)
- Juliane Stehle
- Department of Chemistry and Konstanz Research School Chemical Biology, University of Konstanz, Universitätsstr. 10, 78457, Konstanz, Germany
| | - Miriam Hülsmann
- Faculty of Chemistry and Center for Molecular Materials (CM2), Bielefeld University, Universitätsstraße 25, 33615, Bielefeld, Germany
| | - Adelheid Godt
- Faculty of Chemistry and Center for Molecular Materials (CM2), Bielefeld University, Universitätsstraße 25, 33615, Bielefeld, Germany
| | - Malte Drescher
- Department of Chemistry and Konstanz Research School Chemical Biology, University of Konstanz, Universitätsstr. 10, 78457, Konstanz, Germany
| | - Mykhailo Azarkh
- Department of Chemistry and Konstanz Research School Chemical Biology, University of Konstanz, Universitätsstr. 10, 78457, Konstanz, Germany
| |
Collapse
|
2
|
Tian Y, Shang Q, Liang R, Viles JH. Copper(II) Can Kinetically Trap Arctic and Italian Amyloid-β 40 as Toxic Oligomers, Mimicking Cu(II) Binding to Wild-Type Amyloid-β 42: Implications for Familial Alzheimer's Disease. JACS AU 2024; 4:578-591. [PMID: 38425915 PMCID: PMC10900208 DOI: 10.1021/jacsau.3c00687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 01/23/2024] [Accepted: 01/23/2024] [Indexed: 03/02/2024]
Abstract
The self-association of amyloid-β (Aβ) peptide into neurotoxic oligomers is believed to be central to Alzheimer's disease (AD). Copper is known to impact Aβ assembly, while disrupted copper homeostasis impacts phenotype in Alzheimer's models. Here we show the presence of substoichiometric Cu(II) has very different impacts on the assembly of Aβ40 and Aβ42 isoforms. Globally fitting microscopic rate constants for fibril assembly indicates copper will accelerate fibril formation of Aβ40 by increasing primary nucleation, while seeding experiments confirm that elongation and secondary nucleation rates are unaffected by Cu(II). In marked contrast, Cu(II) traps Aβ42 as prefibrillar oligomers and curvilinear protofibrils. Remarkably, the Cu(II) addition to preformed Aβ42 fibrils causes the disassembly of fibrils back to protofibrils and oligomers. The very different behaviors of the two Aβ isoforms are centered around differences in their fibril structures, as highlighted by studies of C-terminally amidated Aβ42. Arctic and Italian familiar mutations also support a key role for fibril structure in the interplay of Cu(II) with Aβ40/42 isoforms. The Cu(II) dependent switch in behavior between nonpathogenic Aβ40 wild-type and Aβ40 Arctic or Italian mutants suggests heightened neurotoxicity may be linked to the impact of physiological Cu(II), which traps these familial mutants as oligomers and curvilinear protofibrils, which cause membrane permeability and Ca(II) cellular influx.
Collapse
Affiliation(s)
- Yao Tian
- School of Biological and Behavioral
Sciences, Queen Mary University of London, London E1 4NS, U.K.
| | - Qi Shang
- School of Biological and Behavioral
Sciences, Queen Mary University of London, London E1 4NS, U.K.
| | - Ruina Liang
- School of Biological and Behavioral
Sciences, Queen Mary University of London, London E1 4NS, U.K.
| | - John H. Viles
- School of Biological and Behavioral
Sciences, Queen Mary University of London, London E1 4NS, U.K.
| |
Collapse
|
3
|
Sementilli A, Rengifo RF, Li W, Stewart AM, Stewart KL, Twahir U, Kim Y, Yue J, Mehta AK, Shearer J, Warncke K, Lynn DG. Engineering Synthetic Electron Transfer Chains from Metallopeptide Membranes. Inorg Chem 2024; 63:2899-2908. [PMID: 38127051 PMCID: PMC10865380 DOI: 10.1021/acs.inorgchem.3c02861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 11/29/2023] [Accepted: 11/30/2023] [Indexed: 12/23/2023]
Abstract
The energetic and geometric features enabling redox chemistry across the copper cupredoxin fold contain key components of electron transfer chains (ETC), which have been extended here by templating the cross-β bilayer assembly of a synthetic nonapeptide, HHQALVFFA-NH2 (K16A), with copper ions. Similar to ETC cupredoxin plastocyanin, these assemblies contain copper sites with blue-shifted (λmax 573 nm) electronic transitions and strongly oxidizing reduction potentials. Electron spin echo envelope modulation and X-ray absorption spectroscopies define square planar Cu(II) sites containing a single His ligand. Restrained molecular dynamics of the cross-β peptide bilayer architecture support metal ion coordination stabilizing the leaflet interface and indicate that the relatively high reduction potential is not simply the result of distorted coordination geometry (entasis). Cyclic voltammetry (CV) supports a charge-hopping mechanism across multiple copper centers placed 10-12 Å apart within the assembled peptide leaflet interface. This metal-templated scaffold accordingly captures the electron shuttle and cupredoxin functionality in a peptide membrane-localized electron transport chain.
Collapse
Affiliation(s)
- Anthony Sementilli
- Departments
of Chemistry, Biology, and Physics, Emory University, Atlanta, Georgia 30322, United States
| | - Rolando F. Rengifo
- Departments
of Chemistry, Biology, and Physics, Emory University, Atlanta, Georgia 30322, United States
| | - Wei Li
- Departments
of Chemistry, Biology, and Physics, Emory University, Atlanta, Georgia 30322, United States
| | - Andrew M. Stewart
- Departments
of Chemistry, Biology, and Physics, Emory University, Atlanta, Georgia 30322, United States
| | - Katie L. Stewart
- Departments
of Chemistry, Biology, and Physics, Emory University, Atlanta, Georgia 30322, United States
| | - Umar Twahir
- Departments
of Chemistry, Biology, and Physics, Emory University, Atlanta, Georgia 30322, United States
| | - Youngsun Kim
- Departments
of Chemistry, Biology, and Physics, Emory University, Atlanta, Georgia 30322, United States
| | - Jipeng Yue
- Departments
of Chemistry, Biology, and Physics, Emory University, Atlanta, Georgia 30322, United States
| | - Anil K. Mehta
- Departments
of Chemistry, Biology, and Physics, Emory University, Atlanta, Georgia 30322, United States
| | - Jason Shearer
- Department
of Chemistry, Trinity University, San Antonio, Texas 78212, United States
| | - Kurt Warncke
- Departments
of Chemistry, Biology, and Physics, Emory University, Atlanta, Georgia 30322, United States
| | - David G. Lynn
- Departments
of Chemistry, Biology, and Physics, Emory University, Atlanta, Georgia 30322, United States
| |
Collapse
|
4
|
Suh JM, Kim M, Yoo J, Han J, Paulina C, Lim MH. Intercommunication between metal ions and amyloidogenic peptides or proteins in protein misfolding disorders. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2022.214978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
|
5
|
Cunliffe G, Lim YT, Chae W, Jung S. Alternative Pharmacological Strategies for the Treatment of Alzheimer's Disease: Focus on Neuromodulator Function. Biomedicines 2022; 10:biomedicines10123064. [PMID: 36551821 PMCID: PMC9776382 DOI: 10.3390/biomedicines10123064] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 11/23/2022] [Accepted: 11/24/2022] [Indexed: 11/30/2022] Open
Abstract
Alzheimer's disease (AD) is a neurodegenerative disorder, comprising 70% of dementia diagnoses worldwide and affecting 1 in 9 people over the age of 65. However, the majority of its treatments, which predominantly target the cholinergic system, remain insufficient at reversing pathology and act simply to slow the inevitable progression of the disease. The most recent neurotransmitter-targeting drug for AD was approved in 2003, strongly suggesting that targeting neurotransmitter systems alone is unlikely to be sufficient, and that research into alternate treatment avenues is urgently required. Neuromodulators are substances released by neurons which influence neurotransmitter release and signal transmission across synapses. Neuromodulators including neuropeptides, hormones, neurotrophins, ATP and metal ions display altered function in AD, which underlies aberrant neuronal activity and pathology. However, research into how the manipulation of neuromodulators may be useful in the treatment of AD is relatively understudied. Combining neuromodulator targeting with more novel methods of drug delivery, such as the use of multi-targeted directed ligands, combinatorial drugs and encapsulated nanoparticle delivery systems, may help to overcome limitations of conventional treatments. These include difficulty crossing the blood-brain-barrier and the exertion of effects on a single target only. This review aims to highlight the ways in which neuromodulator functions are altered in AD and investigate how future therapies targeting such substances, which act upstream to classical neurotransmitter systems, may be of potential therapeutic benefit in the sustained search for more effective treatments.
Collapse
Affiliation(s)
- Grace Cunliffe
- Institute of Molecular and Cell Biology (IMCB), Agency for Science, Technology and Research (A*STAR), Singapore 138667, Singapore
- Division of Neuroscience and Experimental Psychology, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester M13 9PL, UK
| | - Yi Tang Lim
- Institute of Molecular and Cell Biology (IMCB), Agency for Science, Technology and Research (A*STAR), Singapore 138667, Singapore
- Faculty of Science, National University of Singapore, Singapore 117546, Singapore
| | - Woori Chae
- Institute of Molecular and Cell Biology (IMCB), Agency for Science, Technology and Research (A*STAR), Singapore 138667, Singapore
- Department of BioNano Technology, Gachon University, 1342 Seongnam-daero, Seongnam-si 13120, Republic of Korea
| | - Sangyong Jung
- Institute of Molecular and Cell Biology (IMCB), Agency for Science, Technology and Research (A*STAR), Singapore 138667, Singapore
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117593, Singapore
| |
Collapse
|
6
|
Xiao M, Xiang W, Chen Y, Peng N, Du X, Lu S, Zuo Y, Li B, Hu Y, Li X. DHA Ameliorates Cognitive Ability, Reduces Amyloid Deposition, and Nerve Fiber Production in Alzheimer’s Disease. Front Nutr 2022; 9:852433. [PMID: 35782939 PMCID: PMC9240638 DOI: 10.3389/fnut.2022.852433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Accepted: 05/30/2022] [Indexed: 11/13/2022] Open
Abstract
BackgroundThe etiology of Alzheimer’s disease (AD) is very complex. Docosahexaenoic acid (DHA) is important in cognitive ability and nervous system development. A limited number of studies have evaluated the efficacy of DHA in the treatment of AD.IntroductionWe detected neurofibrillary tangles (NFT) in the hippocampus and cortex of transgenic mice brain through silver glycine staining. We determined the activity of neurons by staining Nissl bodies, used liquid NMR to detect metabolites in the brain, and functional magnetic resonance imaging results to observe the connection signal value between brain regions.Materials and MethodsWe fed 3-month-old APP/PS1 double transgenic mice with DHA mixed feeds for 4 months to assess the effects of DHA on cognitive ability in AD mice through the Morris water maze and open field tests. To evaluate its effects with AD pathology, continuous feeding was done until the mice reached 9 months of age.ResultsCompared to AD mice, escape latency significantly decreased on the fifth day while swimming speed, target quadrant stay time, and the crossing number of platforms increased by varying degrees after DHA treatment. Brain tissue section staining revealed that DHA significantly reduced Aβ and nerve fibers in the brain of AD mice.ConclusionDHA significantly reduced the deposition of Aβ in the brain and inhibited the production of nerve fibers, thereby increasing cognitive abilities in AD mice. In addition, DHA suppressed blood lipid levels, and restored uric acid and urea levels, implying that DHA is a potential therapeutic option for early AD.
Collapse
Affiliation(s)
- Min Xiao
- College of Life Science and Technology, Huazhong Agricultural University, Wuhan, China
- CABIO Biotech (Wuhan) Co., Ltd., Wuhan, China
| | - Wei Xiang
- CABIO Biotech (Wuhan) Co., Ltd., Wuhan, China
| | - Yashu Chen
- Key Laboratory of Oil Crop Biology and Genetic Breeding, Oil Crops Research Institute, Ministry of Agriculture, Chinese Academy of Agricultural Sciences, Wuhan, China
| | - Nan Peng
- College of Life Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Xiubo Du
- Shenzhen Key Laboratory of Microbial Genetic Engineering, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, China
| | - Shuhuan Lu
- CABIO Biotech (Wuhan) Co., Ltd., Wuhan, China
| | - Yao Zuo
- CABIO Biotech (Wuhan) Co., Ltd., Wuhan, China
| | - Boling Li
- CABIO Biotech (Wuhan) Co., Ltd., Wuhan, China
| | - Yonggang Hu
- College of Life Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Xiangyu Li
- CABIO Biotech (Wuhan) Co., Ltd., Wuhan, China
- *Correspondence: Xiangyu Li,
| |
Collapse
|
7
|
Singh SK, Balendra V, Obaid AA, Esposto J, Tikhonova MA, Gautam NK, Poeggeler B. Copper-Mediated β-Amyloid Toxicity and its Chelation Therapy in Alzheimer's Disease. Metallomics 2022; 14:6554256. [PMID: 35333348 DOI: 10.1093/mtomcs/mfac018] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Accepted: 03/08/2022] [Indexed: 01/10/2023]
Abstract
The link between bio-metals, Alzheimer's disease (AD), and its associated protein, amyloid-β (Aβ) is very complex and one of the most studied aspects currently. Alzheimer's disease, a progressive neurodegenerative disease, is proposed to occurs due to the misfolding and aggregation of Aβ. Dyshomeostasis of metal ions and their interaction with Aβ has largely been implicated in AD. Copper plays a crucial role in amyloid-β toxicity and AD development potentially occurs through direct interaction with the copper-binding motif of APP and different amino acid residues of Aβ. Previous reports suggest that high levels of copper accumulation in the AD brain result in modulation of toxic Aβ peptide levels, implicating the role of copper in the pathophysiology of AD. In this review, we explore the possible mode of copper ion interaction with Aβ which accelerates the kinetics of fibril formation and promote amyloid-β mediated cell toxicity in Alzheimer's disease and the potential use of various copper chelators in the prevention of copper-mediated Aβ toxicity.
Collapse
Affiliation(s)
- Sandeep Kumar Singh
- Indian Scientific Education and Technology Foundation, Lucknow-226002, India
| | - Vyshnavy Balendra
- Saint James School of Medicine, Park Ridge, Illinois, United States of America 60068
| | - Ahmad A Obaid
- Laboratory Medicine Department, Faculty of Applied Medical Sciences, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Josephine Esposto
- Department of Environmental and Life Sciences, Trent University, Peterborough, Ontario, CanadaK9L 0G2
| | - Maria A Tikhonova
- Laboratory of the Experimental Models of Neurodegenerative Processes, Scientific Research Institute of Neurosciences and Medicine; Timakov st., 4, Novosibirsk, 630117, Russia
| | - Naveen Kumar Gautam
- Department of Urology and Renal Transplantation, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Raebareli Road, Lucknow 226014, Uttar Pradesh, India
| | - Burkhard Poeggeler
- Johann-Friedrich-Blumenbach-Institute for Zoology & Anthropology, Faculty of Biology and Psychology, Georg-August-University of Göttingen, Am Türmchen 3,33332 Gütersloh, Germany
| |
Collapse
|
8
|
Sialic Acid Ameliorates Cognitive Deficits by Reducing Amyloid Deposition, Nerve Fiber Production, and Neuronal Apoptosis in a Mice Model of Alzheimer’s Disease. NEUROSCI 2021. [DOI: 10.3390/neurosci3010002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
(1) Background: As a natural carbohydrate, sialic acid (SA) is helpful for brain development, cognitive ability, and the nervous system, but there are few reports about the effect of SA on Alzheimer’s disease (AD). (2) Method: The present study evaluated the effect of SA on cognitive ability, neuronal activity, Aβ formation, and tau hyperphosphorylation in a double transgenic AD (2×Tg-AD) mice model. The 2×Tg-AD mice were randomly divided into four groups: the AD control group, 17 mg/kg SA-treated AD group, 84 mg/kg SA-treated AD group, and 420 mg/kg SA-treated AD group. Mice from all four groups were fed to 7 months of age for the behavioral test and to 9 months of age for the pathological factors investigation. (3) Results: In the Morris water maze, the escape latency significantly decreased on the fifth day in the SA-treated groups. The number of rearing and crossing times in the open field test also increased significantly, compared with the control group. SA treatment significantly reduced amyloid β-peptide (Aβ) and nerve fibers and increased the number of Nissl bodies in the brain of AD mice. (4) Conclusions: SA reduced the neuron damage by reducing Aβ and inhibited tau protein hyperphosphorylation, which improved the cognitive ability and mobility of AD mice.
Collapse
|
9
|
Stefaniak E, Pushie MJ, Vaerewyck C, Corcelli D, Griggs C, Lewis W, Kelley E, Maloney N, Sendzik M, Bal W, Haas KL. Exploration of the Potential Role for Aβ in Delivery of Extracellular Copper to Ctr1. Inorg Chem 2020; 59:16952-16966. [PMID: 33211469 DOI: 10.1021/acs.inorgchem.0c02100] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Amyloid beta (Aβ) peptides are notorious for their involvement in Alzheimer's disease (AD), by virtue of their propensity to aggregate to form oligomers, fibrils, and eventually plaques in the brain. Nevertheless, they appear to be essential for correct neurophysiology on the synaptic level and may have additional functions including antimicrobial activity, sealing the blood-brain barrier, promotion of recovery from brain injury, and even tumor suppression. Aβ peptides are also avid copper chelators, and coincidentally copper is significantly dysregulated in the AD brain. Copper (Cu) is released in significant amounts during calcium signaling at the synaptic membrane. Aβ peptides may have a role in maintaining synaptic Cu homeostasis, including as a scavenger for redox-active Cu and as a chaperone for clearing Cu from the synaptic cleft. Here, we employed the Aβ1-16 and Aβ4-16 peptides as well-established non-aggregating models of major Aβ species in healthy and AD brains, and the Ctr1-14 peptide as a model for the extracellular domain of the human cellular copper transporter protein (Ctr1). With these model peptides and a number of spectroscopic techniques, we investigated whether the Cu complexes of Aβ peptides could provide Ctr1 with either Cu(II) or Cu(I). We found that Aβ1-16 fully and rapidly delivered Cu(II) to Ctr1-14 along the affinity gradient. Such delivery was only partial for the Aβ4-16/Ctr1-14 pair, in agreement with the higher complex stability for the former peptide. Moreover, the reaction was very slow and took ca. 40 h to reach equilibrium under the given experimental conditions. In either case of Cu(II) exchange, no intermediate (ternary) species were present in detectable amounts. In contrast, both Aβ species released Cu(I) to Ctr1-14 rapidly and in a quantitative fashion, but ternary intermediate species were detected in the analysis of XAS data. The results presented here are the first direct evidence of a Cu(I) and Cu(II) transfer between the human Ctr1 and Aβ model peptides. These results are discussed in terms of the fundamental difference between the peptides' Cu(II) complexes (pleiotropic ensemble of open structures of Aβ1-16 vs the rigid closed-ring system of amino-terminal Cu/Ni binding Aβ4-16) and the similarity of their Cu(I) complexes (both anchored at the tandem His13/His14, bis-His motif). These results indicate that Cu(I) may be more feasible than Cu(II) as the cargo for copper clearance from the synaptic cleft by Aβ peptides and its delivery to Ctr1. The arguments in favor of Cu(I) include the fact that cellular Cu export and uptake proteins (ATPase7A/B and Ctr1, respectively) specifically transport Cu(I), the abundance of extracellular ascorbate reducing agent in the brain, and evidence of a potential associative (hand-off) mechanism of Cu(I) transfer that may mirror the mechanisms of intracellular Cu chaperone proteins.
Collapse
Affiliation(s)
- Ewelina Stefaniak
- Department of Chemistry and Physics, Saint Mary's College, Notre Dame, Indiana 46556, United States.,Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Pawińskiego 5a, 02-106 Warsaw, Poland
| | - M Jake Pushie
- Department of Surgery, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5E5, Canada
| | - Catherine Vaerewyck
- Department of Chemistry and Physics, Saint Mary's College, Notre Dame, Indiana 46556, United States
| | - David Corcelli
- Department of Chemistry and Physics, Saint Mary's College, Notre Dame, Indiana 46556, United States
| | - Chloe Griggs
- Department of Chemistry and Physics, Saint Mary's College, Notre Dame, Indiana 46556, United States
| | - Whitney Lewis
- Department of Chemistry and Physics, Saint Mary's College, Notre Dame, Indiana 46556, United States
| | - Emma Kelley
- Department of Chemistry and Physics, Saint Mary's College, Notre Dame, Indiana 46556, United States
| | - Noreen Maloney
- Department of Chemistry and Physics, Saint Mary's College, Notre Dame, Indiana 46556, United States
| | - Madison Sendzik
- Department of Chemistry and Physics, Saint Mary's College, Notre Dame, Indiana 46556, United States
| | - Wojciech Bal
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Pawińskiego 5a, 02-106 Warsaw, Poland
| | - Kathryn L Haas
- Department of Chemistry and Physics, Saint Mary's College, Notre Dame, Indiana 46556, United States
| |
Collapse
|
10
|
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
|
11
|
Crooks EJ, Irizarry BA, Ziliox M, Kawakami T, Victor T, Xu F, Hojo H, Chiu K, Simmerling C, Van Nostrand WE, Smith SO, Miller LM. Copper stabilizes antiparallel β-sheet fibrils of the amyloid β40 (Aβ40)-Iowa variant. J Biol Chem 2020; 295:8914-8927. [PMID: 32376688 PMCID: PMC7335782 DOI: 10.1074/jbc.ra119.011955] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2019] [Revised: 04/25/2020] [Indexed: 01/05/2023] Open
Abstract
Cerebral amyloid angiopathy (CAA) is a vascular disorder that primarily involves deposition of the 40-residue-long β-amyloid peptide (Aβ40) in and along small blood vessels of the brain. CAA is often associated with Alzheimer's disease (AD), which is characterized by amyloid plaques in the brain parenchyma enriched in the Aβ42 peptide. Several recent studies have suggested a structural origin that underlies the differences between the vascular amyloid deposits in CAA and the parenchymal plaques in AD. We previously have found that amyloid fibrils in vascular amyloid contain antiparallel β-sheet, whereas previous studies by other researchers have reported parallel β-sheet in fibrils from parenchymal amyloid. Using X-ray fluorescence microscopy, here we found that copper strongly co-localizes with vascular amyloid in human sporadic CAA and familial Iowa-type CAA brains compared with control brain blood vessels lacking amyloid deposits. We show that binding of Cu(II) ions to antiparallel fibrils can block the conversion of these fibrils to the more stable parallel, in-register conformation and enhances their ability to serve as templates for seeded growth. These results provide an explanation for how thermodynamically less stable antiparallel fibrils may form amyloid in or on cerebral vessels by using Cu(II) as a structural cofactor.
Collapse
Affiliation(s)
- Elliot J Crooks
- Department of Biochemistry and Cell Biology, Center for Structural Biology, Stony Brook University, Stony Brook, New York, USA
| | - Brandon A Irizarry
- Department of Biochemistry and Cell Biology, Center for Structural Biology, Stony Brook University, Stony Brook, New York, USA
| | - Martine Ziliox
- Department of Biochemistry and Cell Biology, Center for Structural Biology, Stony Brook University, Stony Brook, New York, USA
| | - Toru Kawakami
- Institute for Protein Research, Osaka University, Suita, Osaka, Japan
| | - Tiffany Victor
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York, USA
| | - Feng Xu
- George & Anne Ryan Institute for Neuroscience and Department of Biomedical and Pharmaceutical Sciences, University of Rhode Island, Kingston, Rhode Island, USA
| | - Hironobu Hojo
- Institute for Protein Research, Osaka University, Suita, Osaka, Japan
| | - Kelley Chiu
- Department of Chemistry, Laufer Center for Physical and Quantitative Biology, Stony Brook University, Stony Brook, New York, USA
| | - Carlos Simmerling
- Department of Chemistry, Laufer Center for Physical and Quantitative Biology, Stony Brook University, Stony Brook, New York, USA
| | - William E Van Nostrand
- George & Anne Ryan Institute for Neuroscience and Department of Biomedical and Pharmaceutical Sciences, University of Rhode Island, Kingston, Rhode Island, USA
| | - Steven O Smith
- Department of Biochemistry and Cell Biology, Center for Structural Biology, Stony Brook University, Stony Brook, New York, USA.
| | - Lisa M Miller
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York, USA; Department of Chemistry, Laufer Center for Physical and Quantitative Biology, Stony Brook University, Stony Brook, New York, USA
| |
Collapse
|
12
|
Sasanian N, Bernson D, Horvath I, Wittung-Stafshede P, Esbjörner EK. Redox-Dependent Copper Ion Modulation of Amyloid-β (1-42) Aggregation In Vitro. Biomolecules 2020; 10:E924. [PMID: 32570820 PMCID: PMC7355640 DOI: 10.3390/biom10060924] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 06/12/2020] [Accepted: 06/16/2020] [Indexed: 12/20/2022] Open
Abstract
Plaque deposits composed of amyloid-β (Aβ) fibrils are pathological hallmarks of Alzheimer's disease (AD). Although copper ion dyshomeostasis is apparent in AD brains and copper ions are found co-deposited with Aβ peptides in patients' plaques, the molecular effects of copper ion interactions and redox-state dependence on Aβ aggregation remain elusive. By combining biophysical and theoretical approaches, we here show that Cu2+ (oxidized) and Cu+ (reduced) ions have opposite effects on the assembly kinetics of recombinant Aβ(1-42) into amyloid fibrils in vitro. Cu2+ inhibits both the unseeded and seeded aggregation of Aβ(1-42) at pH 8.0. Using mathematical models to fit the kinetic data, we find that Cu2+ prevents fibril elongation. The Cu2+-mediated inhibition of Aβ aggregation shows the largest effect around pH 6.0 but is lost at pH 5.0, which corresponds to the pH in lysosomes. In contrast to Cu2+, Cu+ ion binding mildly catalyzes the Aβ(1-42) aggregation via a mechanism that accelerates primary nucleation, possibly via the formation of Cu+-bridged Aβ(1-42) dimers. Taken together, our study emphasizes redox-dependent copper ion effects on Aβ(1-42) aggregation and thereby provides further knowledge of putative copper-dependent mechanisms resulting in AD.
Collapse
Affiliation(s)
| | | | | | | | - Elin K. Esbjörner
- Department of Biology and Biological Engineering, Chalmers University of Technology, 412 96 Gothenburg, Sweden; (N.S.); (D.B.); (I.H.); (P.W.-S.)
| |
Collapse
|
13
|
Bacchella C, Nicolis S, Dell'Acqua S, Rizzarelli E, Monzani E, Casella L. Membrane Binding Strongly Affecting the Dopamine Reactivity Induced by Copper Prion and Copper/Amyloid-β (Aβ) Peptides. A Ternary Copper/Aβ/Prion Peptide Complex Stabilized and Solubilized in Sodium Dodecyl Sulfate Micelles. Inorg Chem 2019; 59:900-912. [PMID: 31869218 DOI: 10.1021/acs.inorgchem.9b03153] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The combination between dyshomeostatic levels of catecholamine neurotransmitters and redox-active metals such as copper and iron exacerbates the oxidative stress condition that typically affects neurodegenerative diseases. We report a comparative study of the oxidative reactivity of copper complexes with amyloid-β (Aβ40) and the prion peptide fragment 76-114 (PrP76-114), containing the high-affinity binding site, toward dopamine and 4-methylcatechol, in aqueous buffer and in sodium dodecyl sulfate micelles, as a model membrane environment. The competitive oxidative and covalent modifications undergone by the peptides were also evaluated. The high binding affinity of Cu/peptide to micelles and lipid membranes leads to a strong reduction (Aβ40) and quenching (PrP76-114) of the oxidative efficiency of the binary complexes and to a stabilization and redox silencing of the ternary complex CuII/Aβ40/PrP76-114, which is highly reactive in solution. The results improve our understanding of the pathological and protective effects associated with these complexes, depending on the physiological environment.
Collapse
Affiliation(s)
- Chiara Bacchella
- Dipartimento di Chimica , Università di Pavia , Via Taramelli 12 , 27100 Pavia , Italy
| | - Stefania Nicolis
- Dipartimento di Chimica , Università di Pavia , Via Taramelli 12 , 27100 Pavia , Italy
| | - Simone Dell'Acqua
- Dipartimento di Chimica , Università di Pavia , Via Taramelli 12 , 27100 Pavia , Italy
| | - Enrico Rizzarelli
- Istituto di Biostrutture e Bioimmagini , Consiglio Nazionale delle Ricerche , Via P. Gaifami 18 , 95125 Catania , Italy
| | - Enrico Monzani
- Dipartimento di Chimica , Università di Pavia , Via Taramelli 12 , 27100 Pavia , Italy
| | - Luigi Casella
- Dipartimento di Chimica , Università di Pavia , Via Taramelli 12 , 27100 Pavia , Italy
| |
Collapse
|
14
|
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
|
15
|
Hong S, Go YK, Derrick JS, Han S, Kim J, Lim MH, Kim SH. Advanced Electron Paramagnetic Resonance Studies of a Ternary Complex of Copper, Amyloid-β, and a Chemical Regulator. Inorg Chem 2018; 57:12665-12670. [DOI: 10.1021/acs.inorgchem.8b01824] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Sugyeong Hong
- Western Seoul Center, Korea Basic Science Institute, Seoul 03759, Republic of Korea
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Yoo Kyung Go
- Western Seoul Center, Korea Basic Science Institute, Seoul 03759, Republic of Korea
| | - Jeffrey S. Derrick
- Department of Chemistry, Ulsan National Institute of Science and Technology, Ulsan 44919, Republic of Korea
| | - Sanghun Han
- Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Jin Kim
- Western Seoul Center, Korea Basic Science Institute, Seoul 03759, Republic of Korea
| | - Mi Hee Lim
- Department of Chemistry, Korea Advanced Institute of Science and Technology, Daejeon 34141, Republic of Korea
| | - Sun Hee Kim
- Western Seoul Center, Korea Basic Science Institute, Seoul 03759, Republic of Korea
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul 03760, Republic of Korea
| |
Collapse
|
16
|
Atrián-Blasco E, Gonzalez P, Santoro A, Alies B, Faller P, Hureau C. Cu and Zn coordination to amyloid peptides: From fascinating chemistry to debated pathological relevance. Coord Chem Rev 2018; 375:38-55. [PMID: 30262932 DOI: 10.1016/j.ccr.2018.04.007] [Citation(s) in RCA: 114] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Several diseases share misfolding of different peptides and proteins as a key feature for their development. This is the case of important neurodegenerative diseases such as Alzheimer's and Parkinson's diseases and type II diabetes mellitus. Even more, metal ions such as copper and zinc might play an important role upon interaction with amyloidogenic peptides and proteins, which could impact their aggregation and toxicity abilities. In this review, the different coordination modes proposed for copper and zinc with amyloid-β, α-synuclein and IAPP will be reviewed as well as their impact on the aggregation, and ROS production in the case of copper. In addition, a special focus will be given to the mutations that affect metal binding and lead to familial cases of the diseases. Different modifications of the peptides that have been observed in vivo and could be relevant for the coordination of metal ions are also described.
Collapse
Affiliation(s)
- Elena Atrián-Blasco
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 route de Narbonne, BP 44099 31077 Toulouse Cedex 4, France
- University of Toulouse, UPS, INPT, 31077 Toulouse Cedex 4, France
| | - Paulina Gonzalez
- Biometals and Biology Chemistry, Institut de Chimie (CNRS UMR7177), Université de Strasbourg, 4 rue B. Pascal, 67081 Strasbourg, France
- University of Strasbourg Institute for Advanced Study (USIAS), Strasbourg, France
| | - Alice Santoro
- Biometals and Biology Chemistry, Institut de Chimie (CNRS UMR7177), Université de Strasbourg, 4 rue B. Pascal, 67081 Strasbourg, France
- University of Strasbourg Institute for Advanced Study (USIAS), Strasbourg, France
| | - Bruno Alies
- Université de Bordeaux, ChemBioPharm INSERM U1212 CNRS UMR 5320, Bordeaux, France
| | - Peter Faller
- Biometals and Biology Chemistry, Institut de Chimie (CNRS UMR7177), Université de Strasbourg, 4 rue B. Pascal, 67081 Strasbourg, France
- University of Strasbourg Institute for Advanced Study (USIAS), Strasbourg, France
| | - Christelle Hureau
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 route de Narbonne, BP 44099 31077 Toulouse Cedex 4, France
- University of Toulouse, UPS, INPT, 31077 Toulouse Cedex 4, France
| |
Collapse
|
17
|
Coskuner-Weber O. Revisiting Cu(II) Bound Amyloid-β40 and Amyloid-β42 Peptides: Varying Coordination Chemistries. JOURNAL OF THE TURKISH CHEMICAL SOCIETY, SECTION A: CHEMISTRY 2018. [DOI: 10.18596/jotcsa.424144] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
|
18
|
Weng H, Yan B. A Eu(III) doped metal-organic framework conjugated with fluorescein-labeled single-stranded DNA for detection of Cu(II) and sulfide. Anal Chim Acta 2017; 988:89-95. [DOI: 10.1016/j.aca.2017.07.061] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2017] [Revised: 07/24/2017] [Accepted: 07/28/2017] [Indexed: 10/19/2022]
|
19
|
Wineman-Fisher V, Miller Y. Insight into a New Binding Site of Zinc Ions in Fibrillar Amylin. ACS Chem Neurosci 2017; 8:2078-2087. [PMID: 28692245 DOI: 10.1021/acschemneuro.7b00221] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Amylin peptides are secreted together with insulin and zinc ions from pancreatic β-cells. Under unknown conditions, the amylin peptides aggregate to produce oligomers and fibrils, and in some cases Zn2+ ions can bind to amylin peptides to form Zn2+-aggregate complexes. Consequently, these aggregates lead to the death of the β-cells and a decrease in insulin, which is one of the symptoms of type-2 diabetes (T2D). Therefore, it is crucial to investigate the binding sites of the Zn2+ ions in fibrillary amylin. It was previously found by in vitro and simulation studies that Zn2+ ion binds to two or four His residues in the turn domain of fibrillary amylin. In the current study, we present a new Zn2+ binding site in the N-terminus of fibrillary amylin with three different coordination modes. Our simulations showed that Zn2+ ions bind to polymorphic amylin fibrils with a preference to bind to four Cys residues rather than two Cys residues of two neighboring amylin monomers. The new binding site leads to conformational changes, increases the number of polymorphic states, and demonstrates the existence of competition between various binding sites. Our study provides insight into the molecular mechanisms through which Zn2+ ions that play a critical role in amylin aggregation can bind to amylin and promote amylin aggregation in T2D.
Collapse
Affiliation(s)
- Vered Wineman-Fisher
- Department of Chemistry, Ben-Gurion University of the Negev, P.O. Box 653, Be’er Sheva 84105, Israel
- Ilse Katz Institute for Nanoscale Science
and Technology, Ben-Gurion University of the Negev, Be’er Sheva 84105, Israel
| | - Yifat Miller
- Department of Chemistry, Ben-Gurion University of the Negev, P.O. Box 653, Be’er Sheva 84105, Israel
- Ilse Katz Institute for Nanoscale Science
and Technology, Ben-Gurion University of the Negev, Be’er Sheva 84105, Israel
| |
Collapse
|
20
|
Dharmadana D, Reynolds NP, Conn CE, Valéry C. Molecular interactions of amyloid nanofibrils with biological aggregation modifiers: implications for cytotoxicity mechanisms and biomaterial design. Interface Focus 2017; 7:20160160. [PMID: 28630679 PMCID: PMC5474041 DOI: 10.1098/rsfs.2016.0160] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Amyloid nanofibrils are ubiquitous biological protein fibrous aggregates, with a wide range of either toxic or beneficial activities that are relevant to human disease and normal biology. Protein amyloid fibrillization occurs via nucleated polymerization, through non-covalent interactions. As such, protein nanofibril formation is based on a complex interplay between kinetic and thermodynamic factors. The process entails metastable oligomeric species and a highly thermodynamically favoured end state. The kinetics, and the reaction pathway itself, can be influenced by third party moieties, either molecules or surfaces. Specifically, in the biological context, different classes of biomolecules are known to act as catalysts, inhibitors or modifiers of the generic protein fibrillization process. The biological aggregation modifiers reviewed here include lipid membranes of varying composition, glycosaminoglycans and metal ions, with a final word on xenobiotic compounds. The corresponding molecular interactions are critically analysed and placed in the context of the mechanisms of cytotoxicity of the amyloids involved in diverse pathologies and the non-toxicity of functional amyloids (at least towards their biological host). Finally, the utilization of this knowledge towards the design of bio-inspired and biocompatible nanomaterials is explored.
Collapse
Affiliation(s)
- Durga Dharmadana
- School of Health and Biomedical Sciences, Discipline of Pharmaceutical Sciences, RMIT University, Bundoora, Melbourne, Victoria 3083, Australia
- School of Science, College of Science, Engineering and Health, RMIT University, Melbourne, Victoria 3001, Australia
| | - Nicholas P. Reynolds
- ARC Training Centre for Biodevices, Faculty of Science, Engineering and Technology, Swinburne University of Technology, Melbourne, Victoria 3122, Australia
| | - Charlotte E. Conn
- School of Science, College of Science, Engineering and Health, RMIT University, Melbourne, Victoria 3001, Australia
| | - Céline Valéry
- School of Health and Biomedical Sciences, Discipline of Pharmaceutical Sciences, RMIT University, Bundoora, Melbourne, Victoria 3083, Australia
| |
Collapse
|
21
|
Abstract
Aggregation of the amyloid-β (Aβ) peptide is strongly correlated with Alzheimer's disease (AD). Recent research has improved our understanding of the kinetics of amyloid fibril assembly and revealed new details regarding different stages in plaque formation. Presently, interest is turning toward studying this process in a holistic context, focusing on cellular components which interact with the Aβ peptide at various junctures during aggregation, from monomer to cross-β amyloid fibrils. However, even in isolation, a multitude of factors including protein purity, pH, salt content, and agitation affect Aβ fibril formation and deposition, often producing complicated and conflicting results. The failure of numerous inhibitors in clinical trials for AD suggests that a detailed examination of the complex interactions that occur during plaque formation, including binding of carbohydrates, lipids, nucleic acids, and metal ions, is important for understanding the diversity of manifestations of the disease. Unraveling how a variety of key macromolecular modulators interact with the Aβ peptide and change its aggregation properties may provide opportunities for developing therapies. Since no protein acts in isolation, the interplay of these diverse molecules may differentiate disease onset, progression, and severity, and thus are worth careful consideration.
Collapse
Affiliation(s)
- Katie L Stewart
- Astbury Centre for Structural Molecular Biology, School of Molecular and Cellular Biology, University of Leeds, Leeds, LS2 9JT, UK.
| | - Sheena E Radford
- Astbury Centre for Structural Molecular Biology, School of Molecular and Cellular Biology, University of Leeds, Leeds, LS2 9JT, UK.
| |
Collapse
|
22
|
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]
|
23
|
Zhao J, Ma B, Nussinov R. Compilation and Analysis of Enzymes, Engineered Antibodies, and Nanoparticles Designed to Interfere with Amyloid-β Aggregation. Isr J Chem 2016. [DOI: 10.1002/ijch.201600093] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jun Zhao
- Cancer and Inflammation Program; National Cancer Institute; Frederick Maryland 21702 USA
| | - Buyong Ma
- Basic Science Program; Leidos Biomedical Research, Inc.; Cancer and Inflammation Program; National Cancer Institute; Frederick Maryland 21702 USA
| | - Ruth Nussinov
- Basic Science Program; Leidos Biomedical Research, Inc.; Cancer and Inflammation Program; National Cancer Institute; Frederick Maryland 21702 USA
- Sackler Institute of Molecular Medicine; Department of Human Genetics and Molecular Medicine; Sackler School of Medicine; Tel Aviv University; Tel Aviv 69978 Israel
| |
Collapse
|
24
|
Coskuner O. Divalent copper ion bound amyloid-β(40) and amyloid-β(42) alloforms are less preferred than divalent zinc ion bound amyloid-β(40) and amyloid-β(42) alloforms. J Biol Inorg Chem 2016; 21:957-973. [DOI: 10.1007/s00775-016-1392-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2016] [Accepted: 08/31/2016] [Indexed: 12/25/2022]
|
25
|
Ginotra YP, Ramteke SN, Walke GR, Rapole S, Kulkarni PP. Histidine availability is decisive in ROS-mediated cytotoxicity of copper complexes of Aβ1–16 peptide. Free Radic Res 2016; 50:405-13. [DOI: 10.3109/10715762.2015.1133907] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
26
|
Metals and Neuronal Metal Binding Proteins Implicated in Alzheimer's Disease. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2016; 2016:9812178. [PMID: 26881049 PMCID: PMC4736980 DOI: 10.1155/2016/9812178] [Citation(s) in RCA: 92] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/05/2015] [Accepted: 12/17/2015] [Indexed: 11/18/2022]
Abstract
Alzheimer's disease (AD) is the most prevalent age-related dementia affecting millions of people worldwide. Its main pathological hallmark feature is the formation of insoluble protein deposits of amyloid-β and hyperphosphorylated tau protein into extracellular plaques and intracellular neurofibrillary tangles, respectively. Many of the mechanistic details of this process remain unknown, but a well-established consequence of protein aggregation is synapse dysfunction and neuronal loss in the AD brain. Different pathways including mitochondrial dysfunction, oxidative stress, inflammation, and metal metabolism have been suggested to be implicated in this process. In particular, a body of evidence suggests that neuronal metal ions such as copper, zinc, and iron play important roles in brain function in health and disease states and altered homeostasis and distribution as a common feature across different neurodegenerative diseases and aging. In this focused review, we overview neuronal proteins that are involved in AD and whose metal binding properties may underlie important biochemical and regulatory processes occurring in the brain during the AD pathophysiological process.
Collapse
|
27
|
Wineman-Fisher V, Miller Y. Effect of Zn2+ ions on the assembly of amylin oligomers: insight into the molecular mechanisms. Phys Chem Chem Phys 2016; 18:21590-9. [DOI: 10.1039/c6cp04105a] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
High and low concentrations of Zn2+ ions decrease the polymorphism of amylin oligomers and do not affect their cross β-beta structures.
Collapse
Affiliation(s)
- Vered Wineman-Fisher
- Department of Chemistry
- Ben-Gurion University of the Negev
- Be'er Sheva 84105
- Israel
- Ilse Katz Institute for Nanoscale Science and Technology
| | - Yifat Miller
- Department of Chemistry
- Ben-Gurion University of the Negev
- Be'er Sheva 84105
- Israel
- Ilse Katz Institute for Nanoscale Science and Technology
| |
Collapse
|
28
|
Di Natale G, Sinopoli A, Grenács Á, Sanna D, Sóvágó I, Pappalardo G. Copper(ii) coordination properties of the Aβ(1–16)2 peptidomimetic: experimental evidence of intermolecular macrochelate complex species in the Aβ dimer. NEW J CHEM 2016. [DOI: 10.1039/c6nj02354a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The coordination features of the copper(ii) complexes with a Aβ(1–16)2 dimeric model are reported for the first time.
Collapse
Affiliation(s)
| | - Alessandro Sinopoli
- PhD Program in Translational Biomedicine
- University of Catania
- 95125 Catania
- Italy
| | - Ágnes Grenács
- Department of Inorganic and Analytical Chemistry
- University of Debrecen
- Hungary
| | - Daniele Sanna
- CNR Institute of Biomolecular Chemistry
- 07040 Sassari
- Italy
| | - Imre Sóvágó
- Department of Inorganic and Analytical Chemistry
- University of Debrecen
- Hungary
| | | |
Collapse
|
29
|
Hevroni BL, Major DT, Dixit M, Mhashal AR, Das S, Fischer B. Nucleoside-2′,3′/3′,5′-bis(thio)phosphate antioxidants are also capable of disassembly of amyloid beta42-Zn(ii)/Cu(ii) aggregates via Zn(ii)/Cu(ii)-chelation. Org Biomol Chem 2016; 14:4640-53. [DOI: 10.1039/c6ob00613b] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Nucleoside-2′,3′/3′,5′-bis(thio)phosphate antioxidants were identified as efficient agents of disassembly of Aβ42-Zn(ii)/Cu(ii) aggregates by M(ii)-chelation, thus making promising scaffolds for new Alzheimer's disease therapeutics.
Collapse
Affiliation(s)
| | - Dan Thomas Major
- Lise Meitner-Minerva Center of Computational Quantum Chemistry
- Bar-Ilan University
- Ramat-Gan 52900
- Israel
| | - Mudit Dixit
- Lise Meitner-Minerva Center of Computational Quantum Chemistry
- Bar-Ilan University
- Ramat-Gan 52900
- Israel
| | - Anil Ranu Mhashal
- Lise Meitner-Minerva Center of Computational Quantum Chemistry
- Bar-Ilan University
- Ramat-Gan 52900
- Israel
| | - Susanta Das
- Lise Meitner-Minerva Center of Computational Quantum Chemistry
- Bar-Ilan University
- Ramat-Gan 52900
- Israel
| | - Bilha Fischer
- Department of Chemistry
- Bar-Ilan University
- Ramat-Gan 52900
- Israel
| |
Collapse
|
30
|
De Santis E, Minicozzi V, Proux O, Rossi G, Silva KI, Lawless MJ, Stellato F, Saxena S, Morante S. Cu(II)-Zn(II) Cross-Modulation in Amyloid-Beta Peptide Binding: An X-ray Absorption Spectroscopy Study. J Phys Chem B 2015; 119:15813-20. [PMID: 26646533 DOI: 10.1021/acs.jpcb.5b10264] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In this work we analyze at a structural level the mechanism by which Cu(II) and Zn(II) ions compete for binding to the Aβ peptides that is involved in the etiology of Alzheimer's disease. We collected X-ray absorption spectroscopy data on samples containing Aβ with Cu and Zn at different concentration ratios. We show that the order in which metals are added to the peptide solution matters and that, when Zn is added first, it prevents Cu from binding. On the contrary, when Cu is added first, it does not (completely) prevent Zn binding to Aβ peptides. Our analysis suggests that Cu and Zn ions are coordinated to different numbers of histidine residues depending on the [ion]:[peptide] concentration ratio.
Collapse
Affiliation(s)
- Emiliano De Santis
- Department of Physics and INFN, University of Rome , Tor Vergata, Rome 00133, Italy
| | - Velia Minicozzi
- Department of Physics and INFN, University of Rome , Tor Vergata, Rome 00133, Italy
| | - Olivier Proux
- Observatoire des Sciences de l'Univers de Grenoble , Grenoble 38400, France
| | - Giancarlo Rossi
- Department of Physics and INFN, University of Rome , Tor Vergata, Rome 00133, Italy.,Centro Fermi , Rome 00184, Italy
| | - K Ishara Silva
- Department of Chemistry, University of Pittsburgh , Pittsburgh, Pennsylvania 15260, United States
| | - Matthew J Lawless
- Department of Chemistry, University of Pittsburgh , Pittsburgh, Pennsylvania 15260, United States
| | - Francesco Stellato
- Department of Physics and INFN, University of Rome , Tor Vergata, Rome 00133, Italy
| | - Sunil Saxena
- Department of Chemistry, University of Pittsburgh , Pittsburgh, Pennsylvania 15260, United States
| | - Silvia Morante
- Department of Physics and INFN, University of Rome , Tor Vergata, Rome 00133, Italy
| |
Collapse
|
31
|
Electrochemical quantification of the Alzheimer’s disease amyloid-β (1–40) using amyloid-β fibrillization promoting peptide. SENSING AND BIO-SENSING RESEARCH 2015. [DOI: 10.1016/j.sbsr.2015.09.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
|
32
|
Derrick JS, Kerr RA, Nam Y, Oh SB, Lee HJ, Earnest KG, Suh N, Peck KL, Ozbil M, Korshavn KJ, Ramamoorthy A, Prabhakar R, Merino EJ, Shearer J, Lee JY, Ruotolo BT, Lim MH. A Redox-Active, Compact Molecule for Cross-Linking Amyloidogenic Peptides into Nontoxic, Off-Pathway Aggregates: In Vitro and In Vivo Efficacy and Molecular Mechanisms. J Am Chem Soc 2015; 137:14785-97. [PMID: 26575890 PMCID: PMC4758209 DOI: 10.1021/jacs.5b10043] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Chemical reagents targeting and controlling amyloidogenic peptides have received much attention for helping identify their roles in the pathogenesis of protein-misfolding disorders. Herein, we report a novel strategy for redirecting amyloidogenic peptides into nontoxic, off-pathway aggregates, which utilizes redox properties of a small molecule (DMPD, N,N-dimethyl-p-phenylenediamine) to trigger covalent adduct formation with the peptide. In addition, for the first time, biochemical, biophysical, and molecular dynamics simulation studies have been performed to demonstrate a mechanistic understanding for such an interaction between a small molecule (DMPD) and amyloid-β (Aβ) and its subsequent anti-amyloidogenic activity, which, upon its transformation, generates ligand-peptide adducts via primary amine-dependent intramolecular cross-linking correlated with structural compaction. Furthermore, in vivo efficacy of DMPD toward amyloid pathology and cognitive impairment was evaluated employing 5xFAD mice of Alzheimer's disease (AD). Such a small molecule (DMPD) is indicated to noticeably reduce the overall cerebral amyloid load of soluble Aβ forms and amyloid deposits as well as significantly improve cognitive defects in the AD mouse model. Overall, our in vitro and in vivo studies of DMPD toward Aβ with the first molecular-level mechanistic investigations present the feasibility of developing new, innovative approaches that employ redox-active compounds without the structural complexity as next-generation chemical tools for amyloid management.
Collapse
Affiliation(s)
- Jeffrey S. Derrick
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Korea
| | - Richard A. Kerr
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Younwoo Nam
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Korea
| | - Shin Bi Oh
- Asan Institute for Life Sciences, Asan Medical Center, Seoul 05505, Korea
| | - Hyuck Jin Lee
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Korea
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Kaylin G. Earnest
- Department of Chemistry, University of Cincinnati, Cincinnati, Ohio 45221, United States
| | - Nayoung Suh
- Asan Institute for Life Sciences, Asan Medical Center, Seoul 05505, Korea
| | - Kristy L. Peck
- Department of Chemistry, University of Nevada, Reno 89557, United States
| | - Mehmet Ozbil
- Department of Chemistry, University of Miami, Coral Gables, Florida 33146, United States
| | - Kyle J. Korshavn
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Ayyalusamy Ramamoorthy
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
- Biophysics, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Rajeev Prabhakar
- Department of Chemistry, University of Miami, Coral Gables, Florida 33146, United States
| | - Edward J. Merino
- Department of Chemistry, University of Cincinnati, Cincinnati, Ohio 45221, United States
| | - Jason Shearer
- Department of Chemistry, University of Nevada, Reno 89557, United States
| | - Joo-Yong Lee
- Asan Institute for Life Sciences, Asan Medical Center, Seoul 05505, Korea
- Department of Convergence Medicine, University of Ulsan College of Medicine, Seoul 05505, Korea
| | - Brandon T. Ruotolo
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Mi Hee Lim
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Korea
| |
Collapse
|
33
|
Barritt JD, Viles JH. Truncated Amyloid-β(11-40/42) from Alzheimer Disease Binds Cu2+ with a Femtomolar Affinity and Influences Fiber Assembly. J Biol Chem 2015; 290:27791-802. [PMID: 26408196 DOI: 10.1074/jbc.m115.684084] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2015] [Indexed: 01/05/2023] Open
Abstract
Alzheimer disease coincides with the formation of extracellular amyloid plaques composed of the amyloid-β (Aβ) peptide. Aβ is typically 40 residues long (Aβ(1-40)) but can have variable C and N termini. Naturally occurring N-terminally truncated Aβ(11-40/42) is found in the cerebrospinal fluid and has a similar abundance to Aβ(1-42), constituting one-fifth of the plaque load. Based on its specific N-terminal sequence we hypothesized that truncated Aβ(11-40/42) would have an elevated affinity for Cu(2+). Various spectroscopic techniques, complemented with transmission electron microscopy, were used to determine the properties of the Cu(2+)-Aβ(11-40/42) interaction and how Cu(2+) influences amyloid fiber formation. We show that Cu(2+)-Aβ(11-40) forms a tetragonal complex with a 34 ± 5 fm dissociation constant at pH 7.4. This affinity is 3 orders of magnitude tighter than Cu(2+) binding to Aβ(1-40/42) and more than an order of magnitude tighter than that of serum albumin, the extracellular Cu(2+) transport protein. Furthermore, Aβ(11-40/42) forms fibers twice as fast as Aβ(1-40) with a very different morphology, forming bundles of very short amyloid rods. Substoichiometric Cu(2+) drastically perturbs Aβ(11-40/42) assembly, stabilizing much longer fibers. The very tight fm affinity of Cu(2+) for Aβ(11-40/42) explains the high levels of Cu(2+) observed in Alzheimer disease plaques.
Collapse
Affiliation(s)
- Joseph D Barritt
- From the School of Biological and Chemical Sciences, Queen Mary, University of London, Mile End Road, London E1 4NS, United Kingdom
| | - John H Viles
- From the School of Biological and Chemical Sciences, Queen Mary, University of London, Mile End Road, London E1 4NS, United Kingdom
| |
Collapse
|
34
|
Lu N, Li J, Gao Z. Key roles of Tyr 10 in Cu bound Aβ complexes and its relevance to Alzheimer's disease. Arch Biochem Biophys 2015; 584:1-9. [PMID: 26247837 DOI: 10.1016/j.abb.2015.07.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2015] [Accepted: 07/08/2015] [Indexed: 11/26/2022]
Abstract
Recent studies show that the accumulation of redox-active Cu mediates the aggregation of amyloid β-peptide (Aβ) and conspicuous oxidative damage to the brain in Alzheimer's disease (AD). However, the key roles for Tyr 10 in Aβ-Cu(II) complex and its potential biological relevance to AD etiology under oxidative stress, were not stressed enough. Interestingly, our results indicated that Aβ40 (not Aβ16)-Cu(II) complex showed obviously enhanced peroxidase activity than free Cu(II). Although Tyr 10 was not the residue binding Cu(II), the mutation of Tyr 10 residue in Aβ40 decreased the peroxidase activity of Aβ40-Cu(II) complex, and the mutation of Tyr 10 could inhibit Aβ40 aggregation. Under oxidative and nitrative stress conditions, the Aβ-Cu(II) complex caused oxidation and nitration of the Aβ Tyr 10 residue through peroxidase-like reactions, where the formation of Cu(I) and hydroxyl radical (OH) was proposed as a chemical mechanism. We also showed that, when Aβ40 aggregates were bound to Cu(II), they retained peroxidase-like activity. Therefore, Tyr 10 residue is pivotal in Aβ-Cu(II) complex and shows important relevance to oxidative stress, implicating the novel significance of Tyr 10 residue as well as Aβ-Cu(II) complex in the pathology of AD.
Collapse
Affiliation(s)
- Naihao Lu
- Key Laboratory of Functional Small Organic Molecule, Ministry of Education, Key Laboratory of Green Chemistry, Jiangxi Province and College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, China.
| | - Jiayu Li
- Key Laboratory of Functional Small Organic Molecule, Ministry of Education, Key Laboratory of Green Chemistry, Jiangxi Province and College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, China
| | - Zhonghong Gao
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
| |
Collapse
|
35
|
Liu N, Huang H, Dou QP, Liu J. Inhibition of 19S proteasome-associated deubiquitinases by metal-containing compounds. Oncoscience 2015; 2:457-66. [PMID: 26097878 PMCID: PMC4468331 DOI: 10.18632/oncoscience.167] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2014] [Accepted: 05/24/2015] [Indexed: 12/31/2022] Open
Abstract
Copper and gold complexes have clinical activity in several diseases including cancer. Recently, we have reported that the anti-cancer activity of copper (II) pyrithione CuPT and gold (I) complex auranofin is associated with targeting the 19S proteasome-associated deubiquitinases (DUBs), UCHL5 and USP14. Here we discuss metal DUB inhibitors in treating cancer and other diseases. (from Editor). Several copper and gold complexes have clinical activity in treating some human diseases including cancer. Recently, we have reported that the anti-cancer activity of copper (II) pyrithione CuPT and gold (I) complex auranofin is tightly associated with their ability to target and inhibit the 19S proteasome-associated deubiquitinases (DUBs), UCHL5 and USP14. In this article we review small molecule inhibitors of DUBs and 19S proteasome-associated DUBs. We then describe and discuss the ubique nature of CuPT and auranofin, which is inhibition of 19S proteasome-associated UCHL5 and USP14. We finally suggest the potential to develop novel, specific metal-based DUB inhibitors for treating cancer and other diseases.
Collapse
Affiliation(s)
- Ningning Liu
- State Key Lab of Respiratory Disease, Protein Modification and Degradation Lab, Department of Pathophysiology, Guangzhou Medical University, Guangdong, China ; Guangzhou Research Institute of Cardiovascular Disease, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, People's Republic of China
| | - Hongbiao Huang
- State Key Lab of Respiratory Disease, Protein Modification and Degradation Lab, Department of Pathophysiology, Guangzhou Medical University, Guangdong, China
| | - Q Ping Dou
- State Key Lab of Respiratory Disease, Protein Modification and Degradation Lab, Department of Pathophysiology, Guangzhou Medical University, Guangdong, China ; The Molecular Therapeutics Program, Barbara Ann Karmanos Cancer Institute, and Departments of Oncology, Pharmacology and Pathology, School of Medicine, Wayne State University, Detroit, Michigan, USA
| | - Jinbao Liu
- State Key Lab of Respiratory Disease, Protein Modification and Degradation Lab, Department of Pathophysiology, Guangzhou Medical University, Guangdong, China
| |
Collapse
|
36
|
Evidence of two oxidation states of copper during aggregation of hen egg white lysozyme (HEWL). Int J Biol Macromol 2015; 76:1-9. [DOI: 10.1016/j.ijbiomac.2015.02.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2014] [Revised: 02/13/2015] [Accepted: 02/13/2015] [Indexed: 11/18/2022]
|
37
|
Cu2+ accentuates distinct misfolding of Aβ(1–40) and Aβ(1–42) peptides, and potentiates membrane disruption. Biochem J 2015; 466:233-42. [DOI: 10.1042/bj20141168] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Cu2+ homoeostasis has been linked to Alzheimer's disease. We demonstrate that Cu2+ causes oligomer and protofibril formation for Aβ(1–42) only, and promotes membrane disruption. Differences in synaptic toxicity of Aβ(1–42) and Aβ(1–40) may be enhanced by the presence of Cu2+.
Collapse
|
38
|
Walke GR, Rapole S, Kulkarni PP. Cisplatin inhibits the formation of a reactive intermediate during copper-catalyzed oxidation of amyloid β peptide. Inorg Chem 2014; 53:10003-5. [PMID: 25237806 DOI: 10.1021/ic5007764] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Cisplatin was studied for its effect on the copper-catalyzed oxidation of amyloid β (Aβ) peptide. The interaction of cisplatin with Aβ1-16 in the presence of Cu(II) was investigated using cyclic voltammetry and mass spectrometry. The positive shift in the E1/2 value of Aβ1-16-Cu(II) suggests that the interaction of cisplatin alters the copper-binding properties of Aβ1-16. The mass spectrometry data show complete inhibition of copper-catalyzed decarboxylation/deamination of the Asp1 residue of Aβ1-16, while there is a significant decrease in copper-catalyzed oxidation of Aβ1-16 in the presence of cisplatin. Overall, our results provide a novel mode by which cisplatin inhibits copper-catalyzed oxidation of Aβ. These findings may lead to the design of better platinum complexes to treat oxidative stress in Alzheimer's disease and other related neurological disorders.
Collapse
Affiliation(s)
- Gulshan R Walke
- Biometry and Nutrition Group, Agharkar Research Institute , Pune, India
| | | | | |
Collapse
|
39
|
Gomez-Castro CZ, Vela A, Quintanar L, Grande-Aztatzi R, Mineva T, Goursot A. Insights into the oxygen-based ligand of the low pH component of the Cu(2+)-amyloid-β complex. J Phys Chem B 2014; 118:10052-64. [PMID: 25090035 DOI: 10.1021/jp5047529] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In spite of significant experimental effort dedicated to the study of Cu(2+) binding to the amyloid beta (Aβ) peptide, involved in Alzheimer's disease, the nature of the oxygen-based ligand in the low pH component of the Cu(2+)-Aβ(1-16) complex is still under debate. This study reports density-functional-theory-based calculations that explore the potential energy surface of Cu(2+) complexes including N and O ligands at the N-terminus of the Aβ peptide, with a focus on evaluating the role of Asp1 carboxylate in copper coordination. Model conformers including 3, 6, and 17 amino acids have been used to systematically study several aspects of the Cu(2+)-coordination such as the Asp1 side chain conformation, local peptide backbone geometry, electrostatic and/or hydrogen bond interactions, and number and availability of Cu(2+) ligands. Our results show that the Asp1 peptide carbonyl binds to Cu(2+) only if the coordination number is less than four. In contrast, if four ligands are available, the most stable structures include the Asp1 carboxylate in equatorial position instead of the Asp1 carbonyl group. The two lowest energy Cu(2+)-Aβ(1-17) models involve Asp1 COO(-), the N-terminus, and His6 and His14 as equatorial ligands, with either a carbonyl or a water molecule in the axial position. These models are in good agreement with experimental data reported for component I of the Cu(2+)-Aβ(1-16) complex, including EXAFS- and X-ray-derived Cu(2+)-ligand distances, Cu(2+) EPR parameters, and (14)N and (13)C superhyperfine couplings. Our results suggest that at low pH, Cu(2+)-Aβ species with Asp1 carboxylate equatorial coordination coexist with species coordinating the Asp1 carbonyl. Understanding the bonding mechanism in these species is relevant to gain a deeper insight on the molecular processes involving copper-amyloid-β complexes, such as aggregation and redox activity.
Collapse
Affiliation(s)
- Carlos Z Gomez-Castro
- Departamento de Química, Cinvestav , Avenida Instituto Politécnico Nacional 2508, México D.F. 07360, México
| | | | | | | | | | | |
Collapse
|
40
|
Streltsov VA, Chandana Epa V, James SA, Churches QI, Caine JM, Kenche VB, Barnham KJ. Structural insights into the interaction of platinum-based inhibitors with the Alzheimer's disease amyloid-β peptide. Chem Commun (Camb) 2014; 49:11364-6. [PMID: 24161993 DOI: 10.1039/c3cc47326k] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Extended X-ray absorption fine structure spectroscopy, mass spectrometry, dynamic light scattering and density functional theory are combined to derive structural models for the interaction of neurotoxicity-ablating platinum-based compounds with the amyloid-β peptide.
Collapse
Affiliation(s)
- Victor A Streltsov
- CSIRO Materials Science & Engineering and Preventative-Health Flagship, Parkville, Victoria 3052, Australia.
| | | | | | | | | | | | | |
Collapse
|
41
|
Wong BX, Hung YH, Bush AI, Duce JA. Metals and cholesterol: two sides of the same coin in Alzheimer's disease pathology. Front Aging Neurosci 2014; 6:91. [PMID: 24860500 PMCID: PMC4030154 DOI: 10.3389/fnagi.2014.00091] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Accepted: 04/28/2014] [Indexed: 11/13/2022] Open
Abstract
Alzheimer's disease (AD) is a multifactorial neurodegenerative disease. It begins years prior to the onset of clinical symptoms, such as memory loss and cognitive decline. Pathological hallmarks of AD include the accumulation of β-amyloid in plaques and hyperphosphorylated tau in neurofibrillary tangles. Copper, iron, and zinc are abnormally accumulated and distributed in the aging brain. These metal ions can adversely contribute to the progression of AD. Dysregulation of cholesterol metabolism has also been implicated in the development of AD pathology. To date, large bodies of research have been carried out independently to elucidate the role of metals or cholesterol on AD pathology. Interestingly, metals and cholesterol affect parallel molecular and biochemical pathways involved in AD pathology. The possible links between metal dyshomeostasis and altered brain cholesterol metabolism in AD are reviewed.
Collapse
Affiliation(s)
- Bruce X Wong
- Oxidation Biology Unit, The Florey Institute of Neuroscience and Mental Health, The University of Melbourne Parkville, VIC, Australia
| | - Ya Hui Hung
- Oxidation Biology Unit, The Florey Institute of Neuroscience and Mental Health, The University of Melbourne Parkville, VIC, Australia
| | - Ashley I Bush
- Oxidation Biology Unit, The Florey Institute of Neuroscience and Mental Health, The University of Melbourne Parkville, VIC, Australia
| | - James A Duce
- Oxidation Biology Unit, The Florey Institute of Neuroscience and Mental Health, The University of Melbourne Parkville, VIC, Australia ; School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds Leeds, North Yorkshire, UK
| |
Collapse
|
42
|
Parthasarathy S, Yoo B, McElheny D, Tay W, Ishii Y. Capturing a reactive state of amyloid aggregates: NMR-based characterization of copper-bound Alzheimer disease amyloid β-fibrils in a redox cycle. J Biol Chem 2014; 289:9998-10010. [PMID: 24523414 DOI: 10.1074/jbc.m113.511345] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
The interaction of redox-active copper ions with misfolded amyloid β (Aβ) is linked to production of reactive oxygen species (ROS), which has been associated with oxidative stress and neuronal damages in Alzheimer disease. Despite intensive studies, it is still not conclusive how the interaction of Cu(+)/Cu(2+) with Aβ aggregates leads to ROS production even at the in vitro level. In this study, we examined the interaction between Cu(+)/Cu(2+) and Aβ fibrils by solid-state NMR (SSNMR) and other spectroscopic methods. Our photometric studies confirmed the production of ~60 μM hydrogen peroxide (H2O2) from a solution of 20 μM Cu(2+) ions in complex with Aβ(1-40) in fibrils ([Cu(2+)]/[Aβ] = 0.4) within 2 h of incubation after addition of biological reducing agent ascorbate at the physiological concentration (~1 mM). Furthermore, SSNMR (1)H T1 measurements demonstrated that during ROS production the conversion of paramagnetic Cu(2+) into diamagnetic Cu(+) occurs while the reactive Cu(+) ions remain bound to the amyloid fibrils. The results also suggest that O2 is required for rapid recycling of Cu(+) bound to Aβ back to Cu(2+), which allows for continuous production of H2O2. Both (13)C and (15)N SSNMR results show that Cu(+) coordinates to Aβ(1-40) fibrils primarily through the side chain Nδ of both His-13 and His-14, suggesting major rearrangements from the Cu(2+) coordination via Nε in the redox cycle. (13)C SSNMR chemical shift analysis suggests that the overall Aβ conformations are largely unaffected by Cu(+) binding. These results present crucial site-specific evidence of how the full-length Aβ in amyloid fibrils offers catalytic Cu(+) centers.
Collapse
|
43
|
Young TR, Kirchner A, Wedd AG, Xiao Z. An integrated study of the affinities of the Aβ16 peptide for Cu(i) and Cu(ii): implications for the catalytic production of reactive oxygen species. Metallomics 2014; 6:505-17. [DOI: 10.1039/c4mt00001c] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Affinities of Aβ16 peptide and several selected variants for Cu(i) and Cu(ii) were determined with new probes and correlated to their binding modes and abilities in promoting ROS generation.
Collapse
Affiliation(s)
- Tessa R. Young
- The Bio21 Molecular Science and Biotechnology Institute
- The University of Melbourne
- Victoria 3010, Australia
- School of Chemistry
- The University of Melbourne
| | - Angie Kirchner
- The Bio21 Molecular Science and Biotechnology Institute
- The University of Melbourne
- Victoria 3010, Australia
- School of Chemistry
- The University of Melbourne
| | - Anthony G. Wedd
- The Bio21 Molecular Science and Biotechnology Institute
- The University of Melbourne
- Victoria 3010, Australia
- School of Chemistry
- The University of Melbourne
| | - Zhiguang Xiao
- The Bio21 Molecular Science and Biotechnology Institute
- The University of Melbourne
- Victoria 3010, Australia
- School of Chemistry
- The University of Melbourne
| |
Collapse
|
44
|
Giacovazzi R, Ciofini I, Rao L, Amatore C, Adamo C. Copper–amyloid-β complex may catalyze peroxynitrite production in brain: evidence from molecular modeling. Phys Chem Chem Phys 2014; 16:10169-74. [DOI: 10.1039/c3cp54839b] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The facile occurrence of an Aβ-catalyzed generation of peroxynitrite in the brain, alternative to H2O2-route, is proposed on the basis of QM/MM calculations.
Collapse
Affiliation(s)
- Roberto Giacovazzi
- Laboratoire d'Electrochimie
- Chimie des Interfaces et Modélisation pour l'Energie
- CNRS UMR-7575
- Ecole Nationale Supérieure de Chimie de Paris - Chimie-ParisTech
- F-75231 Paris Cedex 05, France
| | - Ilaria Ciofini
- Laboratoire PASTEUR
- Ecole Normale Supérieure CNRS UMR-8640
- F-75231 Paris Cedex 05, France
| | - Li Rao
- Laboratoire PASTEUR
- Ecole Normale Supérieure CNRS UMR-8640
- F-75231 Paris Cedex 05, France
| | - Christian Amatore
- Laboratoire d'Electrochimie
- Chimie des Interfaces et Modélisation pour l'Energie
- CNRS UMR-7575
- Ecole Nationale Supérieure de Chimie de Paris - Chimie-ParisTech
- F-75231 Paris Cedex 05, France
| | - Carlo Adamo
- Laboratoire PASTEUR
- Ecole Normale Supérieure CNRS UMR-8640
- F-75231 Paris Cedex 05, France
- Institut Universitaire de France
- 103 Boulevard Saint Michel
| |
Collapse
|
45
|
Silva KI, Saxena S. Zn(II) ions substantially perturb Cu(II) ion coordination in amyloid-β at physiological pH. J Phys Chem B 2013; 117:9386-94. [PMID: 23841511 DOI: 10.1021/jp406067n] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The interaction of Cu(II) and Zn(II) ions with amyloid-β (Aβ) plays an important role in the etiology of Alzheimer's disease. We describe the use of electron spin resonance (ESR) to measure metal-binding competition between Cu(II) and Zn(II) in amyloid-β at physiological pH. Continuous wave ESR measurements show that the affinity of Cu(II) toward Aβ(1-16) is significantly higher than that of Zn(II) at physiological pH. Importantly, of the two known Cu(II) coordination modes in Aβ, component I and component II, Zn(II) displaces Cu(II) only from component I. Our results indicate that at excess amounts of Zn(II) component II becomes the most dominant coordination mode. This observation is important as Aβ aggregates in the brain contain a high Zn(II) ion concentration. In order to determine details of the metal ion competition, electron spin echo envelope modulation experiments were carried out on Aβ variants that were systematically (15)N labeled. In the presence of Zn(II), most peptides use His 14 as an equatorial ligand to bind Cu(II) ions. Interestingly, Zn(II) ions completely substitute Cu(II) ions that are simultaneously coordinated to His 6 and His 13. Furthermore, in the presence of Zn(II), the proportion of Cu(II) ions that are simultaneously coordinated to His 13 and His 14 is increased. On the basis of our results we suggest that His 13 plays a critical role in modulating the morphology of Aβ aggregates.
Collapse
Affiliation(s)
- K Ishara Silva
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA
| | | |
Collapse
|
46
|
Pandey NK, Ghosh S, Nagy NV, Dasgupta S. Fibrillation of human serum albumin shows nonspecific coordination on stoichiometric increment of Copper(II). J Biomol Struct Dyn 2013; 32:1366-78. [DOI: 10.1080/07391102.2013.819300] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
|
47
|
Faller P, Hureau C, Berthoumieu O. Role of metal ions in the self-assembly of the Alzheimer's amyloid-β peptide. Inorg Chem 2013; 52:12193-206. [PMID: 23607830 DOI: 10.1021/ic4003059] [Citation(s) in RCA: 256] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Aggregation of amyloid-β (Aβ) by self-assembly into oligomers or amyloids is a central event in Alzheimer's disease. Coordination of transition-metal ions, mainly copper and zinc, to Aβ occurs in vivo and modulates the aggregation process. A survey of the impact of Cu(II) and Zn(II) on the aggregation of Aβ reveals some general trends: (i) Zn(II) and Cu(II) at high micromolar concentrations and/or in a large superstoichiometric ratio compared to Aβ have a tendency to promote amorphous aggregations (precipitation) over the ordered formation of fibrillar amyloids by self-assembly; (ii) metal ions affect the kinetics of Aβ aggregations, with the most significant impact on the nucleation phase; (iii) the impact is metal-specific; (iv) Cu(II) and Zn(II) affect the concentrations and/or the types of aggregation intermediates formed; (v) the binding of metal ions changes both the structure and the charge of Aβ. The decrease in the overall charge at physiological pH increases the overall driving force for aggregation but may favor more precipitation over fibrillation, whereas the induced structural changes seem more relevant for the amyloid formation.
Collapse
Affiliation(s)
- Peter Faller
- CNRS, LCC (Laboratoire de Chimie de Coordination) , 205 route de Narbonne, BP 44099, F-31077 Toulouse Cedex 4, France
| | | | | |
Collapse
|
48
|
Jiang D, Zhang L, Grant GPG, Dudzik CG, Chen S, Patel S, Hao Y, Millhauser GL, Zhou F. The elevated copper binding strength of amyloid-β aggregates allows the sequestration of copper from albumin: a pathway to accumulation of copper in senile plaques. Biochemistry 2013; 52:547-56. [PMID: 23237523 DOI: 10.1021/bi301053h] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Copper coexists with amyloid-β (Aβ) peptides at a high concentration in the senile plaques of Alzheimer's disease (AD) patients and has been linked to oxidative damage associated with AD pathology. However, the origin of copper and the driving force behind its accumulation are unknown. We designed a sensitive fluorescent probe, Aβ(1-16)(Y10W), by substituting the tyrosine residue at position 10 in the hydrophilic domain of Aβ(1-42) with tryptophan. Upon mixing Cu(II), Aβ(1-16)(Y10W), and aliquots of Aβ(1-42) taken from samples incubated for different lengths of time, we found that the Cu(II) binding strength of aggregated Aβ(1-42) has been elevated by more than 2 orders of magnitude with respect to that of monomeric Aβ(1-42). Electron paramagnetic spectroscopic measurements revealed that the Aβ(1-42) aggregates, unlike their monomeric form, can seize copper from human serum albumin, an abundant copper-containing protein in brain and cerebrospinal fluid. The significantly elevated binding strength of the Aβ(1-42) aggregates can be rationalized by a Cu(II) coordination sphere constituted by three histidines from two adjacent Aβ(1-42) molecules. Our work demonstrates that the copper binding affinity of Aβ(1-42) is dependent on its aggregation state and provides new insight into how and why senile plaques accumulate copper in vivo.
Collapse
Affiliation(s)
- Dianlu Jiang
- Department of Chemistry and Biochemistry, California State University, Los Angeles, Los Angeles, CA 90032, USA
| | | | | | | | | | | | | | | | | |
Collapse
|
49
|
Alies B, Renaglia E, Rózga M, Bal W, Faller P, Hureau C. Cu(II) Affinity for the Alzheimer’s Peptide: Tyrosine Fluorescence Studies Revisited. Anal Chem 2013; 85:1501-8. [DOI: 10.1021/ac302629u] [Citation(s) in RCA: 124] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Bruno Alies
- CNRS, LCC (Laboratoire de Chimie de Coordination),
205 Route de Narbonne,
BP 44099, F-31077 Toulouse, Cedex 4, France
- Université de Toulouse, UPS, INPT, LCC, F-31077 Toulouse, France
| | - Emelyne Renaglia
- CNRS, LCC (Laboratoire de Chimie de Coordination),
205 Route de Narbonne,
BP 44099, F-31077 Toulouse, Cedex 4, France
- Université de Toulouse, UPS, INPT, LCC, F-31077 Toulouse, France
| | - Malgorzata Rózga
- Institute of Biochemistry and
Biophysics, Polish Academy of Sciences,
Pawińskiego 5A, 02-106 Warsaw, Poland
| | - Wojciech Bal
- Institute of Biochemistry and
Biophysics, Polish Academy of Sciences,
Pawińskiego 5A, 02-106 Warsaw, Poland
| | - Peter Faller
- CNRS, LCC (Laboratoire de Chimie de Coordination),
205 Route de Narbonne,
BP 44099, F-31077 Toulouse, Cedex 4, France
- Université de Toulouse, UPS, INPT, LCC, F-31077 Toulouse, France
| | - Christelle Hureau
- CNRS, LCC (Laboratoire de Chimie de Coordination),
205 Route de Narbonne,
BP 44099, F-31077 Toulouse, Cedex 4, France
- Université de Toulouse, UPS, INPT, LCC, F-31077 Toulouse, France
| |
Collapse
|
50
|
Valiente-Gabioud AA, Torres-Monserrat V, Molina-Rubino L, Binolfi A, Griesinger C, Fernández CO. Structural basis behind the interaction of Zn2+ with the protein α-synuclein and the Aβ peptide: A comparative analysis. J Inorg Biochem 2012; 117:334-41. [DOI: 10.1016/j.jinorgbio.2012.06.011] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2012] [Revised: 06/22/2012] [Accepted: 06/22/2012] [Indexed: 11/25/2022]
|