201
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Wang ZM, Xie SS, Li XM, Wu JJ, Wang XB, Kong LY. Multifunctional 3-Schiff base-4-hydroxycoumarin derivatives with monoamine oxidase inhibition, anti-β-amyloid aggregation, metal chelation, antioxidant and neuroprotection properties against Alzheimer's disease. RSC Adv 2015. [DOI: 10.1039/c5ra13594j] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
These 3-Schiff base-4-hydroxycoumarin derivatives were multifunctional agents with monoamine oxidase inhibition, anti-β-amyloid aggregation, metal chelation, antioxidant and neuroprotection properties against Alzheimer's disease.
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Affiliation(s)
- Zhi-Min Wang
- State Key Laboratory of Natural Medicines
- Department of Natural Medicinal Chemistry
- China Pharmaceutical University
- Nanjing 210009
- People's Republic of China
| | - Sai-Sai Xie
- State Key Laboratory of Natural Medicines
- Department of Natural Medicinal Chemistry
- China Pharmaceutical University
- Nanjing 210009
- People's Republic of China
| | - Xue-Mei Li
- State Key Laboratory of Natural Medicines
- Department of Natural Medicinal Chemistry
- China Pharmaceutical University
- Nanjing 210009
- People's Republic of China
| | - Jia-Jia Wu
- State Key Laboratory of Natural Medicines
- Department of Natural Medicinal Chemistry
- China Pharmaceutical University
- Nanjing 210009
- People's Republic of China
| | - Xiao-Bing Wang
- State Key Laboratory of Natural Medicines
- Department of Natural Medicinal Chemistry
- China Pharmaceutical University
- Nanjing 210009
- People's Republic of China
| | - Ling-Yi Kong
- State Key Laboratory of Natural Medicines
- Department of Natural Medicinal Chemistry
- China Pharmaceutical University
- Nanjing 210009
- People's Republic of China
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202
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Tiwari MK, Kepp KP. Pathogenic properties of Alzheimer's β-amyloid identified from structure–property patient-phenotype correlations. Dalton Trans 2015; 44:2747-54. [DOI: 10.1039/c4dt03122a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Direct correlation of Alzheimer patient data to a spectrum of NMR structures and chemical properties of beta amyloid (Aβ) variants allows identification of conformation-dependent disease properties.
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Affiliation(s)
- Manish K. Tiwari
- Department of Chemistry
- Technical University of Denmark
- Kongens Lyngby 2800
- Denmark
| | - Kasper P. Kepp
- Department of Chemistry
- Technical University of Denmark
- Kongens Lyngby 2800
- Denmark
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203
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Tong H, Lou K, Wang W. Near-infrared fluorescent probes for imaging of amyloid plaques in Alzheimer׳s disease. Acta Pharm Sin B 2015; 5:25-33. [PMID: 26579421 PMCID: PMC4629210 DOI: 10.1016/j.apsb.2014.12.006] [Citation(s) in RCA: 94] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2014] [Revised: 12/08/2014] [Accepted: 12/11/2014] [Indexed: 12/25/2022] Open
Abstract
One of the early pathological hallmarks of Alzheimer׳s disease (AD) is the deposition of amyloid-β (Aβ) plaques in the brain. There has been a tremendous interest in the development of Aβ plaques imaging probes for early diagnosis of AD in the past decades. Optical imaging, particularly near-infrared fluorescence (NIRF) imaging, has emerged as a safe, low cost, real-time, and widely available technique, providing an attractive approach for in vivo detection of Aβ plaques among many different imaging techniques. In this review, we provide a brief overview of the state-of-the-art development of NIRF Aβ probes and their in vitro and in vivo applications with special focus on design strategies and optical, binding, and brain-kinetic properties.
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Key Words
- AD, Alzheimer’s disease
- APP, amyloid peptide precursor
- Ach, acetylcholine
- Alzheimer׳s disease
- Amyloid-β plagues
- Aβ, amyloid-β
- BAP, BODIPY-based Ab imaging probe
- BBB, blood-brain barrier
- Blood-brain barrier
- Cy, cyanine dyes
- Fluorescence probe
- ICG, indocyanine green dyes
- MRI, magnetic resonance imaging
- NIR, near-infrared
- NIRF, near-infrared fluorescence
- Near-infrared fluorescence
- Optical imaging
- PET, positron emission tomography
- ROS, reactive oxygen species
- SPECT, single photon emission computed tomography
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204
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Kim D, Bang JK, Kim SH. Multi-Frequency, Multi-Technique Pulsed EPR Investigation of the Copper Binding Site of Murine Amyloid β Peptide. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201410389] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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205
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Multi-Frequency, Multi-Technique Pulsed EPR Investigation of the Copper Binding Site of Murine Amyloid β Peptide. Angew Chem Int Ed Engl 2014; 54:1561-4. [DOI: 10.1002/anie.201410389] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2014] [Indexed: 11/07/2022]
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206
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DeToma AS, Krishnamoorthy J, Nam Y, Lee HJ, Brender JR, Kochi A, Lee D, Onnis V, Congiu C, Manfredini S, Vertuani S, Balboni G, Ramamoorthy A, Lim MH. Synthetic Flavonoids, Aminoisoflavones: Interaction and Reactivity with Metal-Free and Metal-Associated Amyloid-β Species. Chem Sci 2014; 5:4851-4862. [PMID: 25383163 PMCID: PMC4217218 DOI: 10.1039/c4sc01531b] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Metal ion homeostasis in conjunction with amyloid-β (Aβ) aggregation in the brain has been implicated in Alzheimer's disease (AD) pathogenesis. To uncover the interplay between metal ions and Aβ peptides, synthetic, multifunctional small molecules have been employed to modulate Aβ aggregation in vitro. Naturally occurring flavonoids have emerged as a valuable class of compounds for this purpose due to their ability to modulate both metal-free and metal-induced Aβ aggregation. Although, flavonoids have shown anti-amyloidogenic effects, the structural moieties of flavonoids responsible for such reactivity have not been fully identified. In order to understand the structure-interaction-reactivity relationship within the flavonoid family for metal-free and metal-associated Aβ, we designed, synthesized, and characterized a set of isoflavone derivatives, aminoisoflavones (1-4), that displayed reactivity (i.e., modulation of Aβ aggregation) in vitro. NMR studies revealed a potential binding site for aminoisoflavones between the N-terminal loop and central helix on prefibrillar Aβ different from the non-specific binding observed for other flavonoids. The absence or presence of the catechol group differentiated the binding affinities and enthalpy/entropy balance between aminoisoflavones and Aβ. Furthermore, having a catechol group influenced the binding mode with fibrillar Aβ. Inclusion of additional substituents moderately tuned the impact of aminoisoflavones on Aβ aggregation. Overall, through these studies, we obtained valuable insights on the requirements for parity among metal chelation, intermolecular interactions, and substituent variation for Aβ interaction.
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Affiliation(s)
- Alaina S. DeToma
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109-1055, USA
| | - Janarthanan Krishnamoorthy
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109-1055, USA
- Biophysics, University of Michigan, Ann Arbor, Michigan 48109-1055, USA
| | - Younwoo Nam
- Life Sciences Institute, University of Michigan, Ann Arbor, Michigan 48109-2216, USA
- Department of Fine Chemistry, Seoul National University of Science and Technology, Seoul, Korea
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 689-798, Korea
| | - Hyuck Jin Lee
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109-1055, USA
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 689-798, Korea
| | - Jeffrey R. Brender
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109-1055, USA
- Biophysics, University of Michigan, Ann Arbor, Michigan 48109-1055, USA
| | - Akiko Kochi
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109-1055, USA
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 689-798, Korea
| | - Dongkuk Lee
- Department of Fine Chemistry, Seoul National University of Science and Technology, Seoul, Korea
| | - Valentina Onnis
- Department of Life Sciences and Biotechnology, University of Ferrara, I-44121 Ferrara, Italy
| | - Cenzo Congiu
- Department of Life Sciences and Biotechnology, University of Ferrara, I-44121 Ferrara, Italy
| | - Stefano Manfredini
- Department of Life and Environment Sciences, Pharmaceutical, Pharmacological and Nutraceutical Sciences Unit, University of Cagliari, I-09124 Cagliari, Italy
| | - Silvia Vertuani
- Department of Life and Environment Sciences, Pharmaceutical, Pharmacological and Nutraceutical Sciences Unit, University of Cagliari, I-09124 Cagliari, Italy
| | - Gianfranco Balboni
- Department of Life Sciences and Biotechnology, University of Ferrara, I-44121 Ferrara, Italy
| | - Ayyalusamy Ramamoorthy
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109-1055, USA
- Biophysics, University of Michigan, Ann Arbor, Michigan 48109-1055, USA
| | - Mi Hee Lim
- Life Sciences Institute, University of Michigan, Ann Arbor, Michigan 48109-2216, USA
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 689-798, Korea
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207
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Jiang N, Li SY, Xie SS, Li ZR, Wang KD, Wang XB, Kong LY. Design, synthesis and evaluation of multifunctional salphen derivatives for the treatment of Alzheimer's disease. Eur J Med Chem 2014; 87:540-51. [DOI: 10.1016/j.ejmech.2014.10.004] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2014] [Revised: 09/28/2014] [Accepted: 10/01/2014] [Indexed: 10/24/2022]
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208
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Xu L, Chen Y, Wang X. Dual effects of familial Alzheimer's disease mutations (D7H, D7N, and H6R) on amyloid β peptide: Correlation dynamics and zinc binding. Proteins 2014; 82:3286-97. [DOI: 10.1002/prot.24669] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2014] [Revised: 07/17/2014] [Accepted: 08/11/2014] [Indexed: 11/11/2022]
Affiliation(s)
- Liang Xu
- School of Chemistry; Dalian University of Technology; Dalian China
| | - Yonggang Chen
- Network and Information Center, Dalian University of Technology; Dalian China
| | - Xiaojuan Wang
- School of Chemical Machinery, Dalian University of Technology; Dalian China
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209
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Kinetics of serotonin oxidation by heme–Aβ relevant to Alzheimer’s disease. J Biol Inorg Chem 2014; 19:1355-65. [DOI: 10.1007/s00775-014-1193-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2014] [Accepted: 09/04/2014] [Indexed: 01/11/2023]
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210
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Lu N, Li J, Tian R, Peng YY. Key Roles for Tyrosine 10 in Aβ–Heme Complexes and Its Relevance to Oxidative Stress. Chem Res Toxicol 2014; 28:365-72. [DOI: 10.1021/tx5003035] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Naihao Lu
- Key Laboratory of Functional Small Organic Molecule,
Ministry of
Education and College of Life Science, ‡Key Laboratory of Green Chemistry,
Jiangxi Province and College of Chemistry and Chemical Engineering, Jiangxi Normal University, 99 Ziyang Road, Nanchang, Jiangxi 330022, China
| | - Jiayu Li
- Key Laboratory of Functional Small Organic Molecule,
Ministry of
Education and College of Life Science, ‡Key Laboratory of Green Chemistry,
Jiangxi Province and College of Chemistry and Chemical Engineering, Jiangxi Normal University, 99 Ziyang Road, Nanchang, Jiangxi 330022, China
| | - Rong Tian
- Key Laboratory of Functional Small Organic Molecule,
Ministry of
Education and College of Life Science, ‡Key Laboratory of Green Chemistry,
Jiangxi Province and College of Chemistry and Chemical Engineering, Jiangxi Normal University, 99 Ziyang Road, Nanchang, Jiangxi 330022, China
| | - Yi-Yuan Peng
- Key Laboratory of Functional Small Organic Molecule,
Ministry of
Education and College of Life Science, ‡Key Laboratory of Green Chemistry,
Jiangxi Province and College of Chemistry and Chemical Engineering, Jiangxi Normal University, 99 Ziyang Road, Nanchang, Jiangxi 330022, China
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211
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Satpati D, Korde A, Sarma HD, Banerjee S. Synthesis and evaluation of a phenylbenzothiazole-based 99mTc(CO)3-radiotracer for possible application in imaging of β-amyloid plaques in Alzheimer’s disease. J Radioanal Nucl Chem 2014. [DOI: 10.1007/s10967-014-3548-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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212
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Synthesis and characterization of 1H-phenanthro[9,10-d]imidazole derivatives as multifunctional agents for treatment of Alzheimer's disease. Biochim Biophys Acta Gen Subj 2014; 1840:2886-903. [DOI: 10.1016/j.bbagen.2014.05.005] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2014] [Revised: 04/25/2014] [Accepted: 05/05/2014] [Indexed: 01/12/2023]
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213
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Lu N, Li J, Tian R, Peng YY. Key roles of Arg(5), Tyr(10) and his residues in Aβ-heme peroxidase: relevance to Alzheimer's disease. Biochem Biophys Res Commun 2014; 452:676-81. [PMID: 25193696 DOI: 10.1016/j.bbrc.2014.08.130] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2014] [Accepted: 08/25/2014] [Indexed: 01/03/2023]
Abstract
Recent reports show that heme binds to amyloid β-peptide (Aβ) in the brain of Alzheimer's disease (AD) patients and forms Aβ-heme complexes, thus leading a pathological feature of AD. However, the important biological relevance to AD etiology, resulting from human Aβ-heme peroxidase formation, was not well characterized. In this study, we used wild-type and mutated human Aβ1-16 peptides and investigated their Aβ-heme peroxidase activities. Our results indicated that both histidine residues (His(13), His(14)) in Aβ1-16 and free histidine enhanced the peroxidase activity of heme, hence His residues were essential in peroxidase activity of Aβ-heme complexes. Moreover, Arg(5) was found to be the key residue in making the Aβ1-16-heme complex as a peroxidase. Under oxidative and nitrative stress conditions, the Aβ1-16-heme complexes caused oxidation and nitration of the Aβ Tyr(10) residue through promoting peroxidase-like reactions. Therefore, these residues (Arg(5), Tyr(10) and His) were pivotal in human Aβ-heme peroxidase activity. However, three of these residues (Arg(5), Tyr(10) and His(13)) identified in this study are all absent in rodents, where rodent Aβ-heme complex lacks peroxidase activity and it does not show AD, implicating the novel significance of these residues as well as human Aβ-heme peroxidase in the pathology of AD.
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Affiliation(s)
- Naihao Lu
- Key Laboratory of Functional Small Organic Molecule, Ministry of Education and College of Life Science, Jiangxi Normal University, 99 Ziyang Road, Nanchang, Jiangxi 330022, China.
| | - Jiayu Li
- Key Laboratory of Green Chemistry, Jiangxi Province and College of Chemistry and Chemical Engineering, Jiangxi Normal University, 99 Ziyang Road, Nanchang, Jiangxi 330022, China
| | - Rong Tian
- Key Laboratory of Green Chemistry, Jiangxi Province and College of Chemistry and Chemical Engineering, Jiangxi Normal University, 99 Ziyang Road, Nanchang, Jiangxi 330022, China
| | - Yi-Yuan Peng
- Key Laboratory of Functional Small Organic Molecule, Ministry of Education and College of Life Science, Jiangxi Normal University, 99 Ziyang Road, Nanchang, Jiangxi 330022, China; Key Laboratory of Green Chemistry, Jiangxi Province and College of Chemistry and Chemical Engineering, Jiangxi Normal University, 99 Ziyang Road, Nanchang, Jiangxi 330022, China.
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214
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Shi H, Kang B, Lee JY. Zn2+ Effect on Structure and Residual Hydrophobicity of Amyloid β-Peptide Monomers. J Phys Chem B 2014; 118:10355-61. [DOI: 10.1021/jp504779m] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Hu Shi
- Department of Chemistry, Sungkyunkwan University, 2066 Seobu-Ro, Jangan-Gu, Suwon 440-746, South Korea
| | - Baotao Kang
- Department of Chemistry, Sungkyunkwan University, 2066 Seobu-Ro, Jangan-Gu, Suwon 440-746, South Korea
| | - Jin Yong Lee
- Department of Chemistry, Sungkyunkwan University, 2066 Seobu-Ro, Jangan-Gu, Suwon 440-746, South Korea
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215
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Savelieff MG, DeToma AS, Derrick JS, Lim MH. The ongoing search for small molecules to study metal-associated amyloid-β species in Alzheimer's disease. Acc Chem Res 2014; 47:2475-82. [PMID: 25080056 DOI: 10.1021/ar500152x] [Citation(s) in RCA: 127] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The development of a cure for Alzheimer's disease (AD) has been impeded by an inability to pinpoint the root cause of this disorder. Although numerous potential pathological factors have been indicated, acting either individually or mutually, the molecular mechanisms leading to disease onset and progression have not been clear. Amyloid-β (Aβ), generated from proteolytic processing of the amyloid precursor protein (APP), and its aggregated forms, particularly oligomers, are suggested as key pathological features in AD-affected brains. Historically, highly concentrated metals are found colocalized within Aβ plaques. Metal binding to Aβ (metal-Aβ) generates/stabilizes potentially toxic Aβ oligomers, and produces reactive oxygen species (ROS) in vitro (redox active metal ions; plausible contribution to oxidative stress). Consequently, clarification of the relationship between Aβ, metal ions, and toxicity, including oxidative stress via metal-Aβ, can lead to a deeper understanding of AD development. To probe the involvement of metal-Aβ in AD pathogenesis, rationally designed and naturally occurring molecules have been examined as chemical tools to target metal-Aβ species, modulate the interaction between the metal and Aβ, and subsequently redirect their aggregation into nontoxic, off-pathway unstructured aggregates. These ligands are also capable of attenuating the generation of redox active metal-Aβ-induced ROS to mitigate oxidative stress. One rational design concept, the incorporation approach, installs a metal binding site into a framework known to interact with Aβ. This approach affords compounds with the simultaneous ability to chelate metal ions and interact with Aβ. Natural products capable of Aβ interaction have been investigated for their influence on metal-induced Aβ aggregation and have inspired the construction of synthetic analogues. Systematic studies of these synthetic or natural molecules could uncover relationships between chemical structures, metal/Aβ/metal-Aβ interactions, and inhibition of Aβ/metal-Aβ reactivity (i.e., aggregation modes of Aβ/metal-Aβ; associated ROS production), suggesting mechanisms to refine the design strategy. Interdisciplinary investigations have demonstrated that the designed molecules and natural products control the aggregation pathways of metal-Aβ species transforming their size/conformation distribution. The aptitude of these molecules to impact metal-Aβ aggregation pathways, either via inhibition of Aβ aggregate formation, most importantly of oligomers, or disaggregation of preformed fibrils, could originate from their formation of complexes with metal-Aβ. Potentially, these molecules could direct metal-Aβ size/conformational states into alternative nontoxic unstructured oligomers, and control the geometry at the Aβ-ligated metal center for limited ROS formation to lessen the overall toxicity induced by metal-Aβ. Complexation between small molecules and Aβ/metal-Aβ has been observed by nuclear magnetic resonance spectroscopy (NMR) and ion mobility-mass spectrometry (IM-MS) pointing to molecular level interactions, validating the design strategy. In addition, these molecules exhibit other attractive properties, such as antioxidant capacity, prevention of ROS production, potential blood-brain barrier (BBB) permeability, and reduction of Aβ-/metal-Aβ-induced cytotoxicity, making them desirable tools for unraveling AD complexity. In this Account, we summarize the recent development of small molecules, via both rational design and the selection and modification of natural products, as tools for investigating metal-Aβ complexes, to advance our understanding of their relation to AD pathology.
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Affiliation(s)
| | | | | | - Mi Hee Lim
- Department
of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 689-798, Korea
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216
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Li M, Howson SE, Dong K, Gao N, Ren J, Scott P, Qu X. Chiral metallohelical complexes enantioselectively target amyloid β for treating Alzheimer's disease. J Am Chem Soc 2014; 136:11655-63. [PMID: 25062433 DOI: 10.1021/ja502789e] [Citation(s) in RCA: 114] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Stereochemistry is a very important issue for the pharmaceutical industry and can determine drug efficacy. The design and synthesis of small molecules, especially chiral molecules, which selectively target and inhibit amyloid-β (Aβ) aggregation, represent valid therapeutic strategies for treatment of Alzheimer's disease (AD). Herein we report that two triple-helical dinuclear metallosupramolecular complexes can act as a novel class of chiral amyloid-β inhibitors. Through targeting α/β-discordant stretches at the early steps of aggregation, these metal complexes can enantioselectively inhibit Aβ aggregation, which is demonstrated using fluorescent living cell-based screening and multiple biophysical and biochemical approaches. To the best of our knowledge, this is the first report of enantioselective inhibition of Aβ aggregation. Intriguingly, as a promising candidate for AD treatment, the chiral metal complex can cross the blood-brain barrier and have superoxide dismutase activity. It is well-known that chiral discrimination is important for understanding chiral drug action. Generally, one enantiomer is pharmaceutically active while the other is inactive or exerts severe side effects. Chiral discrimination should be important for AD treatment. Our work provides new insights into chiral inhibition of Aβ aggregation and opens a new avenue for design and screening of chiral agents as Aβ inhibitors against AD.
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Affiliation(s)
- Meng Li
- Laboratory of Chemical Biology, Division of Biological Inorganic Chemistry, State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences , Changchun, Jilin 130022, China
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217
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Zhu L, Han Y, He C, Huang X, Wang Y. Disaggregation ability of different chelating molecules on copper ion-triggered amyloid fibers. J Phys Chem B 2014; 118:9298-305. [PMID: 25051063 DOI: 10.1021/jp503282m] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Dysfunctional interaction of amyloid-β (Aβ) with excess metal ions is proved to be related to the etiology of Alzheimer's disease (AD). Using metal-binding compounds to reverse metal-triggered Aβ aggregation has become one of the potential therapies for AD. In this study, the ability of a carboxylic acid gemini surfactant (SDUC), a widely used metal chelator (EDTA), and an antifungal drug clioquinol (CQ) in reversing the Cu(2+)-triggered Aβ(1-40) fibers have been systematically studied by using turbidity essay, BCA essay, atomic force microscopy, transmission electron microscopy, and isothermal titration microcalorimetry. The results show that the binding affinity of Cu(2+) with CQ, SDUC, and EDTA is in the order of CQ > EDTA > SDUC, while the disaggregation ability to Cu(2+)-triggered Aβ(1-40) fibers is in the order of CQ > SDUC > EDTA. Therefore, the disaggregation ability of chelators to the Aβ(1-40) fibers does not only depend on the binding affinity of the chelators with Cu(2+). Strong self-assembly ability of SDUC and π-π interaction of the conjugate group of CQ also contributes toward the disaggregation of the Cu(2+)-triggered Aβ(1-40) fibers and result in the formation of mixed small aggregates.
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Affiliation(s)
- Linyi Zhu
- Key Laboratory of Colloid and Interface Science, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, P. R. China
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218
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Xu L, Chen Y, Wang X. Assembly of Amyloid β Peptides in the Presence of Fibril Seeds: One-Pot Coarse-Grained Molecular Dynamics Simulations. J Phys Chem B 2014; 118:9238-46. [DOI: 10.1021/jp505551m] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Liang Xu
- School of Chemistry, ‡Network and Information Center, and §School of Chemical Machinery, Dalian University of Technology, Dalian, China
| | - Yonggang Chen
- School of Chemistry, ‡Network and Information Center, and §School of Chemical Machinery, Dalian University of Technology, Dalian, China
| | - Xiaojuan Wang
- School of Chemistry, ‡Network and Information Center, and §School of Chemical Machinery, Dalian University of Technology, Dalian, China
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219
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Heffern MC, Velasco PT, Matosziuk LM, Coomes JL, Karras C, Ratner MA, Klein WB, Eckermann AL, Meade TJ. Modulation of amyloid-β aggregation by histidine-coordinating Cobalt(III) Schiff base complexes. Chembiochem 2014; 15:1584-9. [PMID: 24961930 PMCID: PMC4166533 DOI: 10.1002/cbic.201402201] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2014] [Indexed: 01/14/2023]
Abstract
Oligomers of the Aβ42 peptide are significant neurotoxins linked to Alzheimer's disease (AD). Histidine (His) residues present at the N terminus of Aβ42 are believed to influence toxicity by either serving as metal-ion binding sites (which promote oligomerization and oxidative damage) or facilitating synaptic binding. Transition metal complexes that bind to these residues and modulate Aβ toxicity have emerged as therapeutic candidates. Cobalt(III) Schiff base complexes (Co-sb) were evaluated for their ability to interact with Aβ peptides. HPLC-MS, NMR, fluorescence, and DFT studies demonstrated that Co-sb complexes could interact with the His residues in a truncated Aβ16 peptide representing the Aβ42 N terminus. Coordination of Co-sb complexes altered the structure of Aβ42 peptides and promoted the formation of large soluble oligomers. Interestingly, this structural perturbation of Aβ correlated to reduced synaptic binding to hippocampal neurons. These results demonstrate the promise of Co-sb complexes in anti-AD therapeutic approaches.
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Affiliation(s)
- Marie C. Heffern
- Departments of Chemistry, Molecular Biosciences, Neurobiology, Biomedical Engineering, and Radiology, Northwestern University, Evanston, IL 60208-3113, USA
| | - Pauline T. Velasco
- Department of Neurobiology, Northwestern University, Evanston, IL 60208-3113, USA
| | - Lauren M. Matosziuk
- Departments of Chemistry, Molecular Biosciences, Neurobiology, Biomedical Engineering, and Radiology, Northwestern University, Evanston, IL 60208-3113, USA
| | - Joseph L. Coomes
- Departments of Chemistry, Molecular Biosciences, Neurobiology, Biomedical Engineering, and Radiology, Northwestern University, Evanston, IL 60208-3113, USA
| | - Constantine Karras
- Departments of Chemistry, Molecular Biosciences, Neurobiology, Biomedical Engineering, and Radiology, Northwestern University, Evanston, IL 60208-3113, USA
| | - Mark A. Ratner
- Department of Chemistry, Northwestern University, Evanston, IL 60208-3113, USA
| | - William B. Klein
- Department of Neurobiology, Northwestern University, Evanston, IL 60208-3113, USA
| | - Amanda L. Eckermann
- Departments of Chemistry, Molecular Biosciences, Neurobiology, Biomedical Engineering, and Radiology, Northwestern University, Evanston, IL 60208-3113, USA
| | - Thomas J. Meade
- Departments of Chemistry, Molecular Biosciences, Neurobiology, Biomedical Engineering, and Radiology, Northwestern University, Evanston, IL 60208-3113, USA
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220
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Gerlei KZ, Yarligan Uysal S. A comparison of l- and d-Asp and Asn α-radicals a case study for atropisomerism. COMPUT THEOR CHEM 2014. [DOI: 10.1016/j.comptc.2014.03.040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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221
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Li M, Zhao C, Duan T, Ren J, Qu X. New insights into Alzheimer's disease amyloid inhibition: nanosized metallo-supramolecular complexes suppress aβ-induced biosynthesis of heme and iron uptake in PC12 cells. Adv Healthc Mater 2014; 3:832-6. [PMID: 24574275 DOI: 10.1002/adhm.201300470] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2013] [Revised: 09/20/2013] [Indexed: 12/12/2022]
Abstract
Nanosized metallo-supramolecular compounds, [Ni2 L3 ](4+) and [Fe2 L3 ](4+) , can not only strongly inhibit Aβ aggregation but also reduce the peroxidase activity of Aβ-heme. Further studies demonstrate that through blocking the heme-binding site, these two compounds can suppress Aβ-induced biosynthesis of heme and iron uptake in PC12 cells. This work provides new insights into molecular mechanisms of Aβ inhibitors on Aβ-mediated neurotoxicity.
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Affiliation(s)
- Meng Li
- Laboratory of Chemical Biology; Division of Biological Inorganic Chemistry; State Key Laboratory of Rare Earth Resource Utilization; Changchun Institute of Applied Chemistry; University of Chinese Academy of Sciences, Chinese Academy of Sciences; Changchun Jilin 130022 China
| | - Chuanqi Zhao
- Laboratory of Chemical Biology; Division of Biological Inorganic Chemistry; State Key Laboratory of Rare Earth Resource Utilization; Changchun Institute of Applied Chemistry; University of Chinese Academy of Sciences, Chinese Academy of Sciences; Changchun Jilin 130022 China
| | - Taicheng Duan
- Laboratory of Chemical Biology; Division of Biological Inorganic Chemistry; State Key Laboratory of Rare Earth Resource Utilization; Changchun Institute of Applied Chemistry; University of Chinese Academy of Sciences, Chinese Academy of Sciences; Changchun Jilin 130022 China
- National Analytical Research Center of Electrochemistry & Spectroscopy; Changchun Institute of Applied Chemistry; Chinese Academy of Science; Changchun Jilin 130022 China
| | - Jinsong Ren
- Laboratory of Chemical Biology; Division of Biological Inorganic Chemistry; State Key Laboratory of Rare Earth Resource Utilization; Changchun Institute of Applied Chemistry; University of Chinese Academy of Sciences, Chinese Academy of Sciences; Changchun Jilin 130022 China
| | - Xiaogang Qu
- Laboratory of Chemical Biology; Division of Biological Inorganic Chemistry; State Key Laboratory of Rare Earth Resource Utilization; Changchun Institute of Applied Chemistry; University of Chinese Academy of Sciences, Chinese Academy of Sciences; Changchun Jilin 130022 China
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222
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Selection of Peptide Inhibitors of Soluble Aβ1-42Oligomer Formation by Phage Display. Biosci Biotechnol Biochem 2014; 74:2214-9. [DOI: 10.1271/bbb.100388] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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223
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Inhibition of Aggregation of Amyloid β42 by Arginine-Containing Small Compounds. Biosci Biotechnol Biochem 2014; 76:762-6. [DOI: 10.1271/bbb.110879] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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224
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Yu L, Jiang R, Su Q, Yu H, Yang J. Hippocampal neuronal metal ion imbalance related oxidative stress in a rat model of chronic aluminum exposure and neuroprotection of meloxicam. Behav Brain Funct 2014; 10:6. [PMID: 24618126 PMCID: PMC3995718 DOI: 10.1186/1744-9081-10-6] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2013] [Accepted: 02/28/2014] [Indexed: 01/22/2023] Open
Abstract
Neurodegenerative diseases remain a significant unresolved societal burden afflicting millions of people worldwide. Neurons in the brain are highly sensitive to oxidative stress, which can be induced by metal toxicity. In this paper, a chronic aluminum overload-induced model of neurodegeneration was used to investigate whether metal ions (Al, Fe, Mn, Cu and Zn)-related oxidative stress was involved in neurodegenerative mechanism and to identify the protective action of meloxicam against rat hippocampal neuronal injury. The metal ion contents, activity of superoxide dismutase (SOD), and content of malondialdehyde (MDA) were detected. The results showed that the spatial learning and memory (SLM) function was significantly impaired in chronic aluminum overload rats. Considerable karyopycnosis was observed in hippocampal neurons. The SOD activity was weakened and the MDA content increased both significantly. In the hippocampus, Al, Fe, Mn, Cu, and Zn contents increased by 184.1%, 186.1%, 884.2%, 199.4% and 149.2%, respectively. Meloxicam administration (without Al) had no effect compared with the control group, while meloxicam treatment with aluminum exposure significantly protected rats from SLM function impairment, neuron death, lower SOD activity, higher MDA content and brain metal ion imbalance. Our findings suggest that the cerebral metal ion imbalance-related oxidative stress is involved in mechanism of cerebral injury and neurodegeneration induced by chronic Al overload in rats, and that meloxicam protects neurons by reducing metal ion imbalance-related oxidative stress.
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Affiliation(s)
| | | | | | - Huarong Yu
- Department of Pharmacology, Chongqing Key Laboratory of Biochemistry and Molecular Pharmacology, Medical College Rd, No 1, Chongqing Medical University, Chongqing 400016, P, R, China.
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225
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Arosio P, Vendruscolo M, Dobson CM, Knowles TPJ. Chemical kinetics for drug discovery to combat protein aggregation diseases. Trends Pharmacol Sci 2014; 35:127-35. [PMID: 24560688 DOI: 10.1016/j.tips.2013.12.005] [Citation(s) in RCA: 170] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2013] [Revised: 11/17/2013] [Accepted: 12/12/2013] [Indexed: 12/24/2022]
Abstract
Protein misfolding diseases are becoming increasingly prevalent, yet there are very few effective pharmacological treatments. The onset and progression of these diseases is associated with the aberrant aggregation of normally soluble proteins and peptides into amyloid fibrils. Because genetic and physiological findings suggest that protein aggregation is a key event in pathogenesis, an attractive therapeutic strategy against this class of disorders is the search for compounds able to interfere with this process, in particular by suppressing the formation of soluble toxic oligomeric aggregates. In this review, we discuss how chemical kinetics can contribute to the fundamental understanding of the molecular mechanism of aggregation, and speculate on the implications for the development of therapeutic molecules that inhibit specific steps in the aggregation pathway that are crucial for preventing toxicity.
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Affiliation(s)
- Paolo Arosio
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, UK
| | - Michele Vendruscolo
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, UK
| | - Christopher M Dobson
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, UK
| | - Tuomas P J Knowles
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, UK.
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226
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Drolle E, Hane F, Lee B, Leonenko Z. Atomic force microscopy to study molecular mechanisms of amyloid fibril formation and toxicity in Alzheimer's disease. Drug Metab Rev 2014; 46:207-23. [PMID: 24495298 DOI: 10.3109/03602532.2014.882354] [Citation(s) in RCA: 73] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Alzheimer's disease (AD) is a devastating neurodegenerative disease characterized by dementia and memory loss for which no cure or effective prevention is currently available. Neurodegeneration in AD is linked to formation of amyloid plaques found in brain tissues of Alzheimer's patients during post-mortem examination. Amyloid plaques are composed of amyloid fibrils and small oligomers - insoluble protein aggregates. Although amyloid plaques are found on the neuronal cell surfaces, the mechanism of amyloid toxicity is still not well understood. Currently, it is believed that the cytotoxicity is a result of the nonspecific interaction of small soluble amyloid oligomers (rather than longer fibrils) with the plasma membrane. In recent years, nanotechnology has contributed significantly to understanding the structure and function of lipid membranes and to the study of the molecular mechanisms of membrane-associated diseases. We review the current state of research, including applications of the latest nanotechnology approaches, on the interaction of lipid membranes with the amyloid-β (Aβ) peptide in relation to amyloid toxicity. We discuss the interactions of Aβ with model lipid membranes with a focus to demonstrate that composition, charge and phase of the lipid membrane, as well as lipid domains and rafts, affect the binding of Aβ to the membrane and contribute to toxicity. Understanding the role of the lipid membrane in AD at the nanoscale and molecular level will contribute to the understanding of the molecular mechanism of amyloid toxicity and may aid into the development of novel preventive strategies to combat AD.
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Affiliation(s)
- Elizabeth Drolle
- Department of Biology, University of Waterloo , Waterloo, ON , Canada
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227
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Du X, Li H, Wang Z, Qiu S, Liu Q, Ni J. Selenoprotein P and selenoprotein M block Zn2+ -mediated Aβ42 aggregation and toxicity. Metallomics 2014; 5:861-70. [PMID: 23652332 DOI: 10.1039/c3mt20282h] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Aggregation and cytotoxicity of the amyloid-β (Aβ) peptide with transition metal ions in neuronal cells have been suggested to be involved in the progression of Alzheimer's disease (AD). A therapeutic strategy to combat this incurable disease is to design chemical agents to target metal-Aβ species. Selenoproteins are a group of special proteins that contain the 21st amino acid Sec in their sequence. Due to the presence of Sec, studies of this group of proteins are basically focused on their roles in regulating redox potential and scavenging reactive oxygen species. Here, we reported that the His-rich domain of selenoprotein P (SelP-H) and the Sec-to-Cys mutant selenoprotein M (SelM') are capable of binding transition metal ions and modulating the Zn(2+)-mediated Aβ aggregation, ROS production and neurotoxicity. SelM' (U48C) and SelP-H were found to coordinate 0.5 and 2 molar equivalents of Zn(2+)/Cd(2+) with micromolar and submicromolar affinities, respectively. Metal binding induced the structural changes in SelP-H and SelM' according to the circular dichorism spectra. Zn(2+) binding to Aβ42 almost completely suppressed Aβ42 fibrillization, which could be significantly restored by SelP-H and SelM', as observed by thioflavin T (ThT) fluorescence and transmission electron microscopy (TEM). Interestingly, both SelP-H and SelM' inhibited Zn(2+)-Aβ42-induced neurotoxicity and the intracellular ROS production in living cells. These studies suggest that SelP and SelM may play certain roles in regulating redox balance as well as metal homeostasis.
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Affiliation(s)
- Xiubo Du
- College of Life Sciences, Shenzhen Key Laboratory of Microbial Genetic Engineering, Shenzhen University, Shenzhen, China
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228
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Effect of metals on kinetic pathways of amyloid-β aggregation. Biomolecules 2014; 4:101-16. [PMID: 24970207 PMCID: PMC4030978 DOI: 10.3390/biom4010101] [Citation(s) in RCA: 84] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2013] [Revised: 01/04/2014] [Accepted: 01/07/2014] [Indexed: 12/22/2022] Open
Abstract
Metal ions, including copper and zinc, have been implicated in the pathogenesis of Alzheimer’s disease through a variety of mechanisms including increased amyloid-β affinity and redox effects. Recent reports have demonstrated that the amyloid-β monomer does not necessarily travel through a definitive intermediary en-route to a stable amyloid fibril structure. Rather, amyloid-β misfolding may follow a variety of pathways resulting in a fibrillar end-product or a variety of oligomeric end-products with a diversity of structures and sizes. The presence of metal ions has been demonstrated to alter the kinetic pathway of the amyloid-β peptide which may lead to more toxic oligomeric end-products. In this work, we review the contemporary literature supporting the hypothesis that metal ions alter the reaction pathway of amyloid-β misfolding leading to more neurotoxic species.
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229
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Yang L, Chen Q, Liu Y, Zhang J, Sun D, Zhou Y, Liu J. Se/Ru nanoparticles as inhibitors of metal-induced Aβ aggregation in Alzheimer's disease. J Mater Chem B 2014; 2:1977-1987. [DOI: 10.1039/c3tb21586e] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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230
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Arosio P, Cukalevski R, Frohm B, Knowles TPJ, Linse S. Quantification of the Concentration of Aβ42 Propagons during the Lag Phase by an Amyloid Chain Reaction Assay. J Am Chem Soc 2013; 136:219-25. [DOI: 10.1021/ja408765u] [Citation(s) in RCA: 100] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Paolo Arosio
- Department
of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, United Kingdom
| | - Risto Cukalevski
- Department
of Biochemistry and Structural Biology, Lund University, P. O. Box 124, SE221 00 Lund, Sweden
| | - Birgitta Frohm
- Department
of Biochemistry and Structural Biology, Lund University, P. O. Box 124, SE221 00 Lund, Sweden
| | - Tuomas P. J. Knowles
- Department
of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, United Kingdom
| | - Sara Linse
- Department
of Biochemistry and Structural Biology, Lund University, P. O. Box 124, SE221 00 Lund, Sweden
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231
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Tena-Solsona M, Miravet JF, Escuder B. Tetrapeptidic Molecular Hydrogels: Self-assembly and Co-aggregation with Amyloid Fragment Aβ1-40. Chemistry 2013; 20:1023-31. [DOI: 10.1002/chem.201302651] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2013] [Indexed: 12/21/2022]
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232
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Savelieff MG, Liu Y, Senthamarai RRP, Korshavn KJ, Lee HJ, Ramamoorthy A, Lim MH. A small molecule that displays marked reactivity toward copper- versus zinc-amyloid-β implicated in Alzheimer's disease. Chem Commun (Camb) 2013; 50:5301-3. [PMID: 24326305 DOI: 10.1039/c3cc48473d] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Alzheimer's disease (AD) is a complex, multifactorial, neurodegenerative disease that poses tremendous difficulties in pinpointing its precise etiology. A toolkit, which specifically targets and modulates suggested key players, may elucidate their roles in disease onset and progression. We report high-resolution insights on the activity of a small molecule (L2-NO) which exhibits reactivity toward Cu(II)-amyloid-β (Aβ) over Zn(II)-Aβ.
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Affiliation(s)
- Masha G Savelieff
- Life Sciences Institute, University of Michigan, Ann Arbor, MI 48109, USA
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233
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Martins AF, Morfin JF, Geraldes CFGC, Tóth É. Gd3+ complexes conjugated to Pittsburgh compound B: potential MRI markers of β-amyloid plaques. J Biol Inorg Chem 2013; 19:281-95. [DOI: 10.1007/s00775-013-1055-8] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2013] [Accepted: 10/09/2013] [Indexed: 11/29/2022]
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234
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Xu L, Wang X, Wang X. Effects of Zn2+ binding on the structural and dynamic properties of amyloid β peptide associated with Alzheimer's disease: Asp1 or Glu11? ACS Chem Neurosci 2013; 4:1458-68. [PMID: 23947440 DOI: 10.1021/cn4001445] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Extensive experimental and computational studies have suggested that multiple Zn(2+) binding modes in amyloid β (Aβ) peptides could exist simultaneously. However, consistent results have not been obtained for the effects of Zn(2+) binding on Aβ structure, dynamics, and kinetics in particular. Some key questions such as why it is so difficult to distinguish the polymorphic states of metal ions binding to Aβ and what the underlying rationale is, necessitate elucidation. In this work, two 3N1O Zn(2+) binding modes were constructed with three histidines (His(6), His(13), and His(14)), and Asp(1)/Glu(11) of Aβ40 coordinated to Zn(2+). Results from molecular dynamics simulations reveal that the conformational ensembles of different Zn(2+)-Aβ40 complexes are nonoverlapping. The formation of turn structure and, especially, the salt bridge between Glu(22)/Asp(23) and Lys(28) is dependent on specific Zn(2+) binding mode. Agreement with available NMR observations of secondary and tertiary structures could be better achieved if the two simulation results are considered together. The free energy landscape constructed by combining both conformations of Aβ40 indicates that transitions between distinct Aβ40 conformations thar are ready for Zn(2+) binding could be possible in aqueous solution. Markov state model analyses reveal the complex network of conformational space of Aβ40 modeulated by Zn(2+) binding, suggesting various misfolding pathways. The binding free energies evaluated using a combination of quantum mechanics calculations and the MM/3D-RISM method suggest that Glu(11) is the preferred oxygen ligand of Zn(2+). However, such preference is dependent on the relative populations of different conformations with specific Zn(2+) binding modes, and therefore could be shifted when experimental or simulation conditions are altered.
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Affiliation(s)
- Liang Xu
- School of
Chemistry, ‡State Key Laboratory of Fine Chemicals, §School of
Chemical Machinery, ∥Department of Engineering Mechanics, ⊥State
Key Laboratory of Structural Analyses for Industrial Equipment, Dalian University of Technology, Dalian 116023, China
| | - Xiaojuan Wang
- School of
Chemistry, ‡State Key Laboratory of Fine Chemicals, §School of
Chemical Machinery, ∥Department of Engineering Mechanics, ⊥State
Key Laboratory of Structural Analyses for Industrial Equipment, Dalian University of Technology, Dalian 116023, China
| | - Xicheng Wang
- School of
Chemistry, ‡State Key Laboratory of Fine Chemicals, §School of
Chemical Machinery, ∥Department of Engineering Mechanics, ⊥State
Key Laboratory of Structural Analyses for Industrial Equipment, Dalian University of Technology, Dalian 116023, China
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235
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Nicolis S, Monzani E, Pezzella A, Ascenzi P, Sbardella D, Casella L. Neuroglobin Modification by Reactive Quinone Species. Chem Res Toxicol 2013; 26:1821-31. [DOI: 10.1021/tx4001896] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Stefania Nicolis
- Dipartimento
di Chimica, Università di Pavia, Via Taramelli 12, 27100 Pavia, Italy
| | - Enrico Monzani
- Dipartimento
di Chimica, Università di Pavia, Via Taramelli 12, 27100 Pavia, Italy
| | - Alessandro Pezzella
- Dipartimento
di Scienze Chimiche, Università di Napoli ‘Federico II’, Via Cintia 4, 80126 Napoli, Italy
| | - Paolo Ascenzi
- Laboratorio
Interdipartimentale di Microscopia Elettronica, Università Roma Tre, Via della Vasca Navale 79, 00146 Roma, Italy
| | - Diego Sbardella
- Dipartimento
di Scienze Cliniche e Medicina Traslazionale, Università di Roma ‘Tor Vergata’, Via Montpellier 1, 00133 Roma, Italy
- Consorzio Interuniversitario per la Ricerca sulla Chimica dei Metalli nei Sistemi Biologici, Via C. Ulpiani
27, 70126 Bari, Italy
| | - Luigi Casella
- Dipartimento
di Chimica, Università di Pavia, Via Taramelli 12, 27100 Pavia, Italy
- Consorzio Interuniversitario per la Ricerca sulla Chimica dei Metalli nei Sistemi Biologici, Via C. Ulpiani
27, 70126 Bari, Italy
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236
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Gerlei KZ, Jákli I, Szőri M, Jensen SJK, Viskolcz B, Csizmadia IG, Perczel A. Atropisomerism of the Asn α radicals revealed by Ramachandran surface topology. J Phys Chem B 2013; 117:12402-9. [PMID: 24015919 DOI: 10.1021/jp4070906] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
C radicals are typically trigonal planar and thus achiral, regardless of whether they originate from a chiral or an achiral C-atom (e.g., C-H + (•)OH → C• + H2O). Oxidative stress could initiate radical formation in proteins when, for example, the H-atom is abstracted from the Cα-carbon of an amino acid residue. Electronic structure calculations show that such a radical remains achiral when formed from the achiral Gly, or the chiral but small Ala residues. However, when longer side-chain containing proteogenic amino acid residues are studied (e.g., Asn), they provide radicals of axis chirality, which in turn leads to atropisomerism observed for the first time for peptides. The two enantiomeric extended backbone structures, •βL and •βD, interconvert via a pair of enantiotopic reaction paths, monitored on a 4D Ramachandran surface, with two distinct transition states of very different Gibbs-free energies: 37.4 and 67.7 kJ/mol, respectively. This discovery requires the reassessment of our understanding on radical formation and their conformational and stereochemical behavior. Furthermore, the atropisomerism of proteogenic amino acid residues should affect our understanding on radicals in biological systems and, thus, reframes the role of the D-residues as markers of molecular aging.
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Affiliation(s)
- Klára Z Gerlei
- Department of Chemical Informatics, Faculty of Education, University of Szeged , 6726 Szeged, Hungary
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237
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Pramanik D, Mukherjee S, Dey SG. Apomyoglobin Sequesters Heme from Heme Bound Aβ Peptides. Inorg Chem 2013; 52:10929-35. [DOI: 10.1021/ic401771j] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Debajyoti Pramanik
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata, India 700032
| | - Soumya Mukherjee
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata, India 700032
| | - Somdatta Ghosh Dey
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata, India 700032
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238
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Lorrio S, Romero A, González-Lafuente L, Lajarín-Cuesta R, Martínez-Sanz FJ, Estrada M, Samadi A, Marco-Contelles J, Rodríguez-Franco MI, Villarroya M, López MG, de los Ríos C. PP2A ligand ITH12246 protects against memory impairment and focal cerebral ischemia in mice. ACS Chem Neurosci 2013; 4:1267-77. [PMID: 23763493 DOI: 10.1021/cn400050p] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
ITH12246 (ethyl 5-amino-2-methyl-6,7,8,9-tetrahydrobenzo[b][1,8]naphthyridine-3-carboxylate) is a 1,8-naphthyridine described to feature an interesting neuroprotective profile in in vitro models of Alzheimer's disease. These effects were proposed to be due in part to a regulatory action on protein phosphatase 2A inhibition, as it prevented binding of its inhibitor okadaic acid. We decided to investigate the pharmacological properties of ITH12246, evaluating its ability to counteract the memory impairment evoked by scopolamine, a muscarinic antagonist described to promote memory loss, as well as to reduce the infarct volume in mice suffering phototrombosis. Prior to conducting these experiments, we confirmed its in vitro neuroprotective activity against both oxidative stress and Ca(2+) overload-derived excitotoxicity, using SH-SY5Y neuroblastoma cells and rat hippocampal slices. Using a predictive model of blood-brain barrier crossing, it seems that the passage of ITH12246 is not hindered. Its potential hepatotoxicity was observed only at very high concentrations, from 0.1 mM. ITH12246, at the concentration of 10 mg/kg i.p., was able to improve the memory index of mice treated with scopolamine, from 0.22 to 0.35, in a similar fashion to the well-known Alzheimer's disease drug galantamine 2.5 mg/kg. On the other hand, ITH12246, at the concentration of 2.5 mg/kg, reduced the phototrombosis-triggered infarct volume by 67%. In the same experimental conditions, 15 mg/kg melatonin, used as control standard, reduced the infarct volume by 30%. All of these findings allow us to consider ITH12246 as a new potential drug for the treatment of neurodegenerative diseases, which would act as a multifactorial neuroprotectant.
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Affiliation(s)
- Silvia Lorrio
- Instituto Teófilo Hernando and Departamento de Farmacología
y Terapéutica, Facultad de Medicina, Universidad Autónoma de Madrid, C/Arzobispo Morcillo, 4,
28029 Madrid, Spain
| | - Alejandro Romero
- Departamento de Toxicología y Farmacología,
Facultad de Veterinaria, Universidad Complutense de Madrid, Avda. Puerta del Hierro, s/n, 28040 Madrid, Spain
| | - Laura González-Lafuente
- Instituto de Investigación Sanitaria,
Servicio de Farmacología Clínica, Hospital Universitario de la Princesa, C/Diego de León,
62, 28006 Madrid, Spain
- Instituto Teófilo Hernando and Departamento de Farmacología
y Terapéutica, Facultad de Medicina, Universidad Autónoma de Madrid, C/Arzobispo Morcillo, 4,
28029 Madrid, Spain
| | - Rocío Lajarín-Cuesta
- Instituto Teófilo Hernando and Departamento de Farmacología
y Terapéutica, Facultad de Medicina, Universidad Autónoma de Madrid, C/Arzobispo Morcillo, 4,
28029 Madrid, Spain
| | - Francisco J. Martínez-Sanz
- Instituto Teófilo Hernando and Departamento de Farmacología
y Terapéutica, Facultad de Medicina, Universidad Autónoma de Madrid, C/Arzobispo Morcillo, 4,
28029 Madrid, Spain
| | - Martín Estrada
- Instituto de Química Médica (IQM, CSIC),
C/Juan de la Cierva, 3, 28006 Madrid, Spain
| | - Abdelouahid Samadi
- Laboratorio de Química Médica (IQOG, CSIC), C/Juan de la Cierva, 3,
28006 Madrid, Spain
| | - Jose Marco-Contelles
- Laboratorio de Química Médica (IQOG, CSIC), C/Juan de la Cierva, 3,
28006 Madrid, Spain
| | | | - Mercedes Villarroya
- Instituto de Investigación Sanitaria,
Servicio de Farmacología Clínica, Hospital Universitario de la Princesa, C/Diego de León,
62, 28006 Madrid, Spain
- Instituto Teófilo Hernando and Departamento de Farmacología
y Terapéutica, Facultad de Medicina, Universidad Autónoma de Madrid, C/Arzobispo Morcillo, 4,
28029 Madrid, Spain
| | - Manuela G. López
- Instituto de Investigación Sanitaria,
Servicio de Farmacología Clínica, Hospital Universitario de la Princesa, C/Diego de León,
62, 28006 Madrid, Spain
- Instituto Teófilo Hernando and Departamento de Farmacología
y Terapéutica, Facultad de Medicina, Universidad Autónoma de Madrid, C/Arzobispo Morcillo, 4,
28029 Madrid, Spain
| | - Cristóbal de los Ríos
- Instituto de Investigación Sanitaria,
Servicio de Farmacología Clínica, Hospital Universitario de la Princesa, C/Diego de León,
62, 28006 Madrid, Spain
- Instituto Teófilo Hernando and Departamento de Farmacología
y Terapéutica, Facultad de Medicina, Universidad Autónoma de Madrid, C/Arzobispo Morcillo, 4,
28029 Madrid, Spain
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239
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Characterization of the polymorphic states of copper(II)-bound Aβ(1-16) peptides by computational simulations. J Comput Chem 2013; 34:2524-36. [DOI: 10.1002/jcc.23416] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2013] [Revised: 07/23/2013] [Accepted: 08/01/2013] [Indexed: 01/07/2023]
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240
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Liu Y, Kochi A, Pithadia AS, Lee S, Nam Y, Beck MW, He X, Lee D, Lim MH. Tuning Reactivity of Diphenylpropynone Derivatives with Metal-Associated Amyloid-β Species via Structural Modifications. Inorg Chem 2013; 52:8121-30. [DOI: 10.1021/ic400851w] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
| | | | | | | | - Younwoo Nam
- Department of Fine Chemistry, Seoul National University of Science and Technology, Seoul 139-743, Korea
| | | | | | - Dongkuk Lee
- Department of Fine Chemistry, Seoul National University of Science and Technology, Seoul 139-743, Korea
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241
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Frigori RB, Rizzi LG, Alves NA. Microcanonical thermostatistics of coarse-grained proteins with amyloidogenic propensity. J Chem Phys 2013; 138:015102. [PMID: 23298062 DOI: 10.1063/1.4773007] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
The formation of fibrillar aggregates seems to be a common characteristic of polypeptide chains, although the observation of these aggregates may depend on appropriate experimental conditions. Partially folded intermediates seem to have an important role in the generation of protein aggregates, and a mechanism for this fibril formation considers that these intermediates also correspond to metastable states with respect to the fibrillar ones. Here, using a coarse-grained (CG) off-lattice model, we carry out a comparative analysis of the thermodynamic aspects characterizing the folding transition with respect to the propensity for aggregation of four different systems: two isoforms of the amyloid β-protein, the Src SH3 domain, and the human prion proteins (hPrP). Microcanonical analysis of the data obtained from replica exchange method is conducted to evaluate the free-energy barrier and latent heat in these models. The simulations of the amyloid β isoforms and Src SH3 domain indicated that the folding process described by this CG model is related to a negative specific heat, a phenomenon that can only be verified in the microcanonical ensemble in first-order phase transitions. The CG simulation of the hPrP heteropolymer yielded a continuous folding transition. The absence of a free-energy barrier and latent heat favors the presence of partially unfolded conformations, and in this context, this thermodynamic aspect could explain the reason why the hPrP heteropolymer is more aggregation-prone than the other heteropolymers considered in this study. We introduced the hydrophobic radius of gyration as an order parameter and found that it can be used to obtain reliable information about the hydrophobic packing and the transition temperatures in the folding process.
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Affiliation(s)
- Rafael B Frigori
- Departamento de Física, FFCLRP, Universidade de São Paulo, Avenida Bandeirantes, 3900, 14040-901, Ribeirão Preto, SP, Brazil.
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242
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Ye W, Wang W, Jiang C, Yu Q, Chen H. Molecular dynamics simulations of amyloid fibrils: an in silico approach. Acta Biochim Biophys Sin (Shanghai) 2013; 45:503-8. [PMID: 23532062 DOI: 10.1093/abbs/gmt026] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Amyloid fibrils play causal roles in the pathogenesis of amyloid-related degenerative diseases such as Alzheimer's disease, type II diabetes mellitus, and the prion-related transmissible spongiform encephalopathies. The mechanism of fibril formation and protein aggregation is still hotly debated and remains an important open question in order to develop therapeutic method of these diseases. However, traditional molecular biological and crystallographic experiments could hardly observe atomic details and aggregation process. Molecular dynamics (MD) simulations could provide explanations for experimental results and detailed pathway of protein aggregation. In this review, we focus on the applications of MD simulations on several amyloidogenic protein systems. Furthermore, MD simulations could help us to understand the mechanism of amyloid aggregation and how to design the inhibitors.
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Affiliation(s)
- Wei Ye
- State Key Laboratory of Microbial Metabolism, Department of Bioinformatics and Biostatistics, College of Life Sciences and Biotechnology, Shanghai Jiaotong University, Shanghai 200240, China
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243
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Liu L, Zhao F, Ma F, Zhang L, Yang S, Xia N. Electrochemical detection of β-amyloid peptides on electrode covered with N-terminus-specific antibody based on electrocatalytic O2 reduction by Aβ(1-16)-heme-modified gold nanoparticles. Biosens Bioelectron 2013; 49:231-5. [PMID: 23770394 DOI: 10.1016/j.bios.2013.05.028] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2013] [Revised: 05/17/2013] [Accepted: 05/20/2013] [Indexed: 10/26/2022]
Abstract
β-Amyloid (Aβ) peptides are believed to be important for the diagnosis and prognosis of Alzheimer's disease (AD) serving as reliable molecular biomarkers. In this work, we reported a simple and sensitive electrochemical strategy for the detection of total Aβ peptides using gold nanoparticles modified with Aβ(1-16)-heme (denoted as Aβ(1-16)-heme-AuNPs). Monoclonal antibody (mAb) specific to the common N-terminus of Aβ was immobilized onto gold electrode for the capture of Aβ(1-16)-heme-AuNPs. The anchored Aβ(1-16)-heme-AuNPs showed strong electrocatalytic O2 reduction. Pre-incubation of the mAb-covered electrode with native Aβ decreased the amount of Aβ(1-16)-heme-AuNPs immobilized onto the electrode, resulting in the decrease of the reduction current of O2 to H2O2. The competitive assay is sensitive and selective to Aβ peptides. The voltammetric responses were found to be proportional to the concentrations of Aβ ranging from 0.02 to 1.50nM, and a detection limit of 10 pM was achieved. To demonstrate the viability of the method for the analysis of Aβ in real sample, artificial cerebrospinal fluid (aCSF) containing Aβ(1-40), Aβ(1-42) and Aβ(1-16) was tested. We believe that the method would offer a useful means for quantifying Aβ in a biological matrix, and be valuable in the design of new types of electrochemical biosensors for the detection of peptides and proteins.
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Affiliation(s)
- Lin Liu
- College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang, Henan 455000, People's Republic of China.
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244
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Savelieff MG, Lee S, Liu Y, Lim MH. Untangling amyloid-β, tau, and metals in Alzheimer's disease. ACS Chem Biol 2013; 8:856-65. [PMID: 23506614 DOI: 10.1021/cb400080f] [Citation(s) in RCA: 287] [Impact Index Per Article: 26.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Protein misfolding and metal ion dyshomeostasis are believed to underlie numerous neurodegenerative diseases, including Alzheimer's disease (AD). The pathological hallmark of AD is accumulation of misfolded amyloid-β (Aβ) peptides and hyperphosphorylated tau (ptau) proteins in the brain. Since AD etiology remains unclear, several hypotheses have emerged to elucidate its pathological pathways. The amyloid cascade hypothesis, a leading hypothesis for AD development, advocates Aβ as the principal culprit. Additionally, evidence suggests that tau may contribute to AD pathology. Aβ and tau have also been shown to impact each other's pathology either directly or indirectly. Furthermore, metal ion dyshomeostasis is associated with these misfolded proteins. Metal interactions with Aβ and tau/ptau also influence their aggregation properties and neurotoxicity. Herein, we present current understanding on the roles of Aβ, tau, and metal ions, placing equal emphasis on each of these proposed features, as well as their inter-relationships in AD pathogenesis.
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Affiliation(s)
- Masha G. Savelieff
- Life
Sciences Institute and ‡Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109,
United States
| | - Sanghyun Lee
- Life
Sciences Institute and ‡Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109,
United States
| | - Yuzhong Liu
- Life
Sciences Institute and ‡Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109,
United States
| | - Mi Hee Lim
- Life
Sciences Institute and ‡Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109,
United States
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245
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Xu L, Shan S, Wang X. Single Point Mutation Alters the Microstate Dynamics of Amyloid β-Protein Aβ42 as Revealed by Dihedral Dynamics Analyses. J Phys Chem B 2013; 117:6206-16. [DOI: 10.1021/jp403288b] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Liang Xu
- School of Chemistry, Dalian University of Technology, Dalian 116023, China
| | - Shengsheng Shan
- School of Chemistry, Dalian University of Technology, Dalian 116023, China
| | - Xicheng Wang
- Department of Engineering Mechanics,
State Key Laboratory of Structural Analyses for Industrial Equipment, Dalian University of Technology, Dalian 116023, China
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246
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Martins AF, Morfin JF, Kubíčková A, Kubíček V, Buron F, Suzenet F, Salerno M, Lazar AN, Duyckaerts C, Arlicot N, Guilloteau D, Geraldes CFGC, Tóth É. PiB-Conjugated, Metal-Based Imaging Probes: Multimodal Approaches for the Visualization of β-Amyloid Plaques. ACS Med Chem Lett 2013; 4:436-40. [PMID: 24900692 DOI: 10.1021/ml400042w] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2013] [Accepted: 04/14/2013] [Indexed: 01/19/2023] Open
Abstract
In an effort toward the visualization of β-amyloid plaques by in vivo imaging techniques, we have conjugated an optimized derivative of the Pittsburgh compound B (PiB), a well-established marker of Aβ plaques, to DO3A-monoamide that is capable of forming stable, noncharged complexes with different trivalent metal ions including Gd(3+) for MRI and (111)In(3+) for SPECT applications. Proton relaxivity measurements evidenced binding of Gd(DO3A-PiB) to the amyloid peptide Aβ1-40 and to human serum albumin, resulting in a two- and four-fold relaxivity increase, respectively. Ex vivo immunohistochemical studies showed that the DO3A-PiB complexes selectively target Aβ plaques on Alzheimer's disease human brain tissue. Ex vivo biodistribution data obtained for the (111)In-analogue pointed to a moderate blood-brain barrier (BBB) penetration in adult male Swiss mice (without amyloid deposits) with 0.36% ID/g in the cortex at 2 min postinjection.
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Affiliation(s)
- André F. Martins
- Centre de Biophysique Moléculaire, CNRS, Rue Charles Sadron, 45071 Orléans Cedex
2, France
- Department of
Life Sciences,
Center of Neurosciences and Cell Biology (CNC), and Coimbra Chemistry
Center, University of Coimbra, Portugal
| | - Jean-François Morfin
- Centre de Biophysique Moléculaire, CNRS, Rue Charles Sadron, 45071 Orléans Cedex
2, France
| | - Anna Kubíčková
- Centre de Biophysique Moléculaire, CNRS, Rue Charles Sadron, 45071 Orléans Cedex
2, France
- Department of Analytical Chemistry, Charles University in Prague, Albertov 2030, 12840
Prague, Czech Republic
| | - Vojtěch Kubíček
- Centre de Biophysique Moléculaire, CNRS, Rue Charles Sadron, 45071 Orléans Cedex
2, France
| | - Frédéric Buron
- Institut de Chimie Organique
et Analytique, UMR 7311 CNRS/Université d’Orléans, rue de Chartres, 45067 Orléans, France
| | - Franck Suzenet
- Institut de Chimie Organique
et Analytique, UMR 7311 CNRS/Université d’Orléans, rue de Chartres, 45067 Orléans, France
| | - Milena Salerno
- Laboratoire CSPBAT, CNRS UMR
7244, UFR-SMBH, Université Paris 13, 74 rue Marcel Cachin, 93017 Bobigny, France
| | - Adina N. Lazar
- Centre de Recherche de l’Institut
du Cerveau et de la Moelle, CNRS UMR7225, INSERM, UMR975 and UPMC, Hôpital de la Pitié-Salpêtrière 47, Bd de l’Hôpital 75013 Paris, France
| | - Charles Duyckaerts
- Centre de Recherche de l’Institut
du Cerveau et de la Moelle, CNRS UMR7225, INSERM, UMR975 and UPMC, Hôpital de la Pitié-Salpêtrière 47, Bd de l’Hôpital 75013 Paris, France
| | - Nicolas Arlicot
- Inserm, U930, Université François Rabelais de Tours, CHRU de Tours, 37044
Tours Cedex 9, France
| | - Denis Guilloteau
- Inserm, U930, Université François Rabelais de Tours, CHRU de Tours, 37044
Tours Cedex 9, France
| | - Carlos F. G. C. Geraldes
- Department of
Life Sciences,
Center of Neurosciences and Cell Biology (CNC), and Coimbra Chemistry
Center, University of Coimbra, Portugal
| | - Éva Tóth
- Centre de Biophysique Moléculaire, CNRS, Rue Charles Sadron, 45071 Orléans Cedex
2, France
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247
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Xu L, Wang X, Wang X. Characterization of the internal dynamics and conformational space of zinc-bound amyloid β peptides by replica-exchange molecular dynamics simulations. EUROPEAN BIOPHYSICS JOURNAL: EBJ 2013; 42:575-86. [DOI: 10.1007/s00249-013-0906-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2013] [Revised: 04/07/2013] [Accepted: 04/12/2013] [Indexed: 12/26/2022]
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248
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Mukherjee S, Dey SG. Heme Bound Amylin: Spectroscopic Characterization, Reactivity, and Relevance to Type 2 Diabetes. Inorg Chem 2013; 52:5226-35. [DOI: 10.1021/ic4001413] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Soumya Mukherjee
- Department of Inorganic
Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata, India 700032
| | - Somdatta Ghosh Dey
- Department of Inorganic
Chemistry, Indian Association for the Cultivation of Science, Jadavpur, Kolkata, India 700032
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249
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Zhou Y, Wang J, Liu L, Wang R, Lai X, Xu M. Interaction between amyloid-β peptide and heme probed by electrochemistry and atomic force microscopy. ACS Chem Neurosci 2013; 4:535-9. [PMID: 23590249 DOI: 10.1021/cn300231q] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Heme binds to amyloid β-peptide (Aβ) in the brain of Alzheimer's disease (AD) patients, thus forming Aβ-heme complexes and leading the characteristic pathological features of AD. The interaction between heme and Aβ might have important biological relevance to AD etiology. In this work, the electrochemical performances of heme after incubation with Aβ1-42, Aβ fragments, and mutated Aβ were systematically investigated using cyclic voltammetry and differential pulse voltammetry. Our results indicated that His13 and His14 were possible binding sites, and Aβ bound two molecules of heme with a binding constant of K(a1) = 7.27 × 10(6) M(-1) (n(1) = 1.5) and K(a2) = 2.89 × 10(6) M(-1) (n(1) = 1.8). Detailed analysis with atomic force microscopy (AFM) of Aβ1-42 in the absence or presence of heme under the same incubation conditions showed that heme inhibited the formation of Aβ fibrils. According to results of the spectroscopic characterization, Arg5 was the key residue in making the heme-Aβ1-42 complex as a peroxidase.
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Affiliation(s)
- Yanli Zhou
- Henan University Key Laboratory of
Nanobiological Analytical Chemistry, Department of Chemistry and Chemical
Engineering, Shangqiu Normal University, Shangqiu 476000, China
| | - Jing Wang
- Henan University Key Laboratory of
Nanobiological Analytical Chemistry, Department of Chemistry and Chemical
Engineering, Shangqiu Normal University, Shangqiu 476000, China
| | - Lantao Liu
- Henan University Key Laboratory of
Nanobiological Analytical Chemistry, Department of Chemistry and Chemical
Engineering, Shangqiu Normal University, Shangqiu 476000, China
| | - Rongrong Wang
- Henan University Key Laboratory of
Nanobiological Analytical Chemistry, Department of Chemistry and Chemical
Engineering, Shangqiu Normal University, Shangqiu 476000, China
| | - Xinhe Lai
- Henan University Key Laboratory of
Nanobiological Analytical Chemistry, Department of Chemistry and Chemical
Engineering, Shangqiu Normal University, Shangqiu 476000, China
| | - Maotian Xu
- Henan University Key Laboratory of
Nanobiological Analytical Chemistry, Department of Chemistry and Chemical
Engineering, Shangqiu Normal University, Shangqiu 476000, China
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250
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Hane F, Tran G, Attwood SJ, Leonenko Z. Cu(2+) affects amyloid-β (1-42) aggregation by increasing peptide-peptide binding forces. PLoS One 2013; 8:e59005. [PMID: 23536847 PMCID: PMC3594192 DOI: 10.1371/journal.pone.0059005] [Citation(s) in RCA: 87] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2012] [Accepted: 02/04/2013] [Indexed: 11/19/2022] Open
Abstract
The link between metals, Alzheimer's disease (AD) and its implicated protein, amyloid-β (Aβ), is complex and highly studied. AD is believed to occur as a result of the misfolding and aggregation of Aβ. The dyshomeostasis of metal ions and their propensity to interact with Aβ has also been implicated in AD. In this work, we use single molecule atomic force spectroscopy to measure the rupture force required to dissociate two Aβ (1–42) peptides in the presence of copper ions, Cu2+. In addition, we use atomic force microscopy to resolve the aggregation of Aβ formed. Previous research has shown that metal ions decrease the lag time associated with Aβ aggregation. We show that with the addition of copper ions the unbinding force increases notably. This suggests that the reduction of lag time associated with Aβ aggregation occurs on a single molecule level as a result of an increase in binding forces during the very initial interactions between two Aβ peptides. We attribute these results to copper ions acting as a bridge between the two peptide molecules, increasing the stability of the peptide-peptide complex.
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Affiliation(s)
- Francis Hane
- Department of Biology, University of Waterloo, Waterloo, Ontario, Canada
| | - Gary Tran
- Department of Biology, University of Waterloo, Waterloo, Ontario, Canada
| | - Simon J. Attwood
- Department of Physics and Astronomy, University of Waterloo, Waterloo, Ontario, Canada
| | - Zoya Leonenko
- Department of Biology, University of Waterloo, Waterloo, Ontario, Canada
- Department of Physics and Astronomy, University of Waterloo, Waterloo, Ontario, Canada
- * E-mail:
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