51
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Ma M, Gao N, Li X, Liu Z, Pi Z, Du X, Ren J, Qu X. A Biocompatible Second Near-Infrared Nanozyme for Spatiotemporal and Non-Invasive Attenuation of Amyloid Deposition through Scalp and Skull. ACS NANO 2020; 14:9894-9903. [PMID: 32806077 DOI: 10.1021/acsnano.0c02733] [Citation(s) in RCA: 61] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Phototherapy, such as photodynamic therapy and photothermal therapy, holds great potential for modulation of Alzheimer's β-amyloid (Aβ) self-assembly. Unfortunately, current works for phototherapy of Alzheimer's disease (AD) are just employing either visible or first near-infrared (NIR-I) light with limited tissue penetration, which can not avoid damaging nearby normal tissues of AD patients through the dense skull and scalp. To overcome the shortcomings of AD phototherapy, herein we report an amyloid targeting, N-doped three-dimensional mesoporous carbon nanosphere (KD8@N-MCNs) as a second near-infrared (NIR-II) PTT agent. This makes it possible for photothermal dissociation of Aβ aggregates through the scalp and skull in a NIR-II window without hurting nearby normal tissues. Besides, KD8@N-MCNs have both superoxide dismutase and catalase activities, which can scavenge intracellular superfluous reactive oxygen species and alleviate neuroinflammation in vivo. Furthermore, KD8@N-MCNs efficiently cross the blood-brain barrier owing to the covalently grafted target peptides of KLVFFAED on the nanosphere surface. In vivo studies demonstrate that KD8@N-MCNs decrease Aβ deposits, ameliorate memory deficits, and alleviate neuroinflammation in the 3xTg-AD mouse model. Our work provides a biocompatible and non-invasive way to attenuate AD-associated pathology.
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Affiliation(s)
- Mengmeng Ma
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- University of Science and Technology of China, Hefei, Anhui 230029, China
| | - Nan Gao
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Xuexia Li
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- University of Science and Technology of China, Hefei, Anhui 230029, China
| | - Zhenqi Liu
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- University of Science and Technology of China, Hefei, Anhui 230029, China
| | - Zifeng Pi
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Xiubo Du
- College of Life Sciences and Oceanography, Shenzhen Key Laboratory of Microbial Genetic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Jinsong Ren
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- University of Science and Technology of China, Hefei, Anhui 230029, China
| | - Xiaogang Qu
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- University of Science and Technology of China, Hefei, Anhui 230029, China
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52
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Torra J, Bondia P, Gutierrez-Erlandsson S, Sot B, Flors C. Long-term STED imaging of amyloid fibers with exchangeable Thioflavin T. NANOSCALE 2020; 12:15050-15053. [PMID: 32666991 DOI: 10.1039/d0nr02961k] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
We report the use of the amyloid probe Thioflavin T (ThT) as a specific and exchangeable fluorophore for stimulated emission depletion (STED) super-resolution imaging of amyloid fibers. This method achieves a spatial resolution in the range of 60-70 nm, low image background and increased photostability that enables long-term STED imaging. These results expand the widespread uses of ThT and can be potentially extended to other common amyloid fluorescent probes, providing new tools for the study of amyloid diseases.
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Affiliation(s)
- Joaquim Torra
- Madrid Institute for Advanced Studies in Nanoscience (IMDEA Nanociencia), Madrid, Spain.
| | - Patricia Bondia
- Madrid Institute for Advanced Studies in Nanoscience (IMDEA Nanociencia), Madrid, Spain.
| | | | - Begoña Sot
- Madrid Institute for Advanced Studies in Nanoscience (IMDEA Nanociencia), Madrid, Spain. and Unidad Asociada en Nanobiotecnología (CNB-CSIC-IMDEA Nanociencia), Madrid, Spain
| | - Cristina Flors
- Madrid Institute for Advanced Studies in Nanoscience (IMDEA Nanociencia), Madrid, Spain. and Unidad Asociada en Nanobiotecnología (CNB-CSIC-IMDEA Nanociencia), Madrid, Spain
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53
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Xu Y, Xiao L. Efficient suppression of amyloid-β peptide aggregation and cytotoxicity with photosensitive polymer nanodots. J Mater Chem B 2020; 8:5776-5782. [PMID: 32538407 DOI: 10.1039/d0tb00302f] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The deposition of amyloid plaques resulting from the aggregation of amyloid-β (Aβ) peptides is closely related to Alzheimer's disease (AD). With the development of various therapeutic methods, the oxidative modification of Aβ has emerged as a fascinating noninvasive photo-therapeutic intervention for treating AD by altering the Aβ aggregation tendency. Herein, we report the photo-triggered inhibition of Aβ aggregation and cytotoxicity by utilizing polymer nanodots (Pdots) modified with rose bengal (RB), methylene blue (MB), and riboflavin (RF). Experimental results demonstrate that these functionalized Pdots manifest a superior suppression effect on Aβ aggregation under irradiation. This can be attributed to the formation of reactive oxygen species (ROS) (i.e., singlet oxygen (1O2)), resulting in the oxygenation of Aβ and the change of Aβ aggregation tendency. Especially, RB-Pdots manifest better biocompatibility and higher 1O2 productivity. In a word, this hybridized nanostructure will provide a promising platform for the noninvasive photo-therapeutic treatment of AD in the future.
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Affiliation(s)
- Yueling Xu
- State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Biosensing and Molecular Recognition, College of Chemistry, Nankai University, Tianjin, 300071, China. www.xiaolhlab.cn
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54
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Shao L, Pan Y, Hua B, Xu S, Yu G, Wang M, Liu B, Huang F. Constructing Adaptive Photosensitizers via Supramolecular Modification Based on Pillararene Host–Guest Interactions. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202000338] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Li Shao
- State Key Laboratory of Chemical Engineering Center for Chemistry of High-Performance & Novel Materials Department of Chemistry Zhejiang University Hangzhou 310027 P. R. China
| | - Yutong Pan
- Department of Chemical and Biomolecular Engineering National University of Singapore 4 Engineering Drive 4 117585 Singapore Singapore
| | - Bin Hua
- State Key Laboratory of Chemical Engineering Center for Chemistry of High-Performance & Novel Materials Department of Chemistry Zhejiang University Hangzhou 310027 P. R. China
| | - Shidang Xu
- Department of Chemical and Biomolecular Engineering National University of Singapore 4 Engineering Drive 4 117585 Singapore Singapore
| | - Guocan Yu
- Laboratory of Molecular Imaging and Nanomedicine National Institute of Biomedical Imaging and Bioengineering National Institutes of Health Bethesda MD 20892 USA
| | - Mengbin Wang
- State Key Laboratory of Chemical Engineering Center for Chemistry of High-Performance & Novel Materials Department of Chemistry Zhejiang University Hangzhou 310027 P. R. China
| | - Bin Liu
- Department of Chemical and Biomolecular Engineering National University of Singapore 4 Engineering Drive 4 117585 Singapore Singapore
| | - Feihe Huang
- State Key Laboratory of Chemical Engineering Center for Chemistry of High-Performance & Novel Materials Department of Chemistry Zhejiang University Hangzhou 310027 P. R. China
- Green Catalysis Center and College of Chemistry Zhengzhou University Zhengzhou 450001 P. R. China
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55
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Shao L, Pan Y, Hua B, Xu S, Yu G, Wang M, Liu B, Huang F. Constructing Adaptive Photosensitizers via Supramolecular Modification Based on Pillararene Host-Guest Interactions. Angew Chem Int Ed Engl 2020; 59:11779-11783. [PMID: 32324962 DOI: 10.1002/anie.202000338] [Citation(s) in RCA: 77] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Revised: 04/14/2020] [Indexed: 01/13/2023]
Abstract
In order to promote the development of photodynamic therapy (PDT), undesired side effects like low tumor specificity and the "always-on" phenomenon should be avoided. An effective solution is to construct an adaptive photosensitizer that can be activated to generate reactive oxygen species (ROS) in the tumor microenvironment. Herein, we design and synthesize a supramolecular switch based on a host-guest complex containing a water-soluble pillar[5]arene (WP5) and an AIEgen photosensitizer (G). The formation of the host-guest complex WP5⊃G quenches the fluorescence and inhibits ROS generation of G. Benefitting from the pH-responsiveness of WP5, the binding site between G and WP5 changes in an acidic environment through a shuttle movement. Consequently, fluorescence and ROS generation of the host-guest complex can be switched on at pH 5.0. This work offers a new paradigm for the construction of adaptive photosensitizers by using a supramolecular method.
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Affiliation(s)
- Li Shao
- State Key Laboratory of Chemical Engineering, Center for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou, 310027, P. R. China
| | - Yutong Pan
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, 117585, Singapore, Singapore
| | - Bin Hua
- State Key Laboratory of Chemical Engineering, Center for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou, 310027, P. R. China
| | - Shidang Xu
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, 117585, Singapore, Singapore
| | - Guocan Yu
- Laboratory of Molecular Imaging and Nanomedicine, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Mengbin Wang
- State Key Laboratory of Chemical Engineering, Center for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou, 310027, P. R. China
| | - Bin Liu
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, 117585, Singapore, Singapore
| | - Feihe Huang
- State Key Laboratory of Chemical Engineering, Center for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou, 310027, P. R. China.,Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou, 450001, P. R. China
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56
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Yang J, Liu W, Sun Y, Dong X. LVFFARK-PEG-Stabilized Black Phosphorus Nanosheets Potently Inhibit Amyloid-β Fibrillogenesis. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:1804-1812. [PMID: 32011894 DOI: 10.1021/acs.langmuir.9b03612] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Deposition of amyloid-β (Aβ) aggregates in the brain is a main pathological hallmark of Alzheimer's disease (AD), so inhibition of Aβ aggregation has been considered as a promising strategy for AD prevention and treatment. Black phosphorus (BP) is a 2D nanomaterial with high biocompatibility and unique biodegradability, but its potential application in biomedicine suffers from the rapid degradability and unfunctionability. To overcome the drawbacks and broaden its application, we have herein designed an Aβ inhibitor (LK7)-coupled and polyethylene glycol (PEG)-stabilized BP-based nanosystem. The PEGylated-LK7-BP nanosheets (PEG-LK7@BP) not only exhibited a good stability but also demonstrated a significantly enhanced inhibitory potency on Aβ42 fibrillogenesis in comparison with its counterparts. This elaborately designed PEG-LK7@BP stopped the conformational transition and suppressed the fibrillization of Aβ42, so it could completely rescue cultured cells from the toxicity of Aβ42 (by increasing the cell viability from 72 to 100%) at 100 μg/mL. It is considered that PEG-LK7@BP could bind Aβ species by enhanced electrostatic and hydrophobic interactions and thus efficiently alleviated Aβ-Aβ interactions. Meanwhile, the coupled LK7 on the BP surface formed a high local concentration that enhanced the affinity between the nanosystem and Aβ species. Finally, PEG could improve the stability and dispersibility of the nanoplatform to make it show an increased inhibitory effect on the amyloid formation. Hence, this work proved that PEG-LK7@BP is a promising nanosystem for the development of amyloid inhibitors fighting against AD.
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Affiliation(s)
- Junnan Yang
- Department of Biochemical Engineering and Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology , Tianjin University , Tianjin 300354 , China
| | - Wei Liu
- Department of Biochemical Engineering and Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology , Tianjin University , Tianjin 300354 , China
| | - Yan Sun
- Department of Biochemical Engineering and Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology , Tianjin University , Tianjin 300354 , China
| | - Xiaoyan Dong
- Department of Biochemical Engineering and Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and Technology , Tianjin University , Tianjin 300354 , China
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57
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Armiento V, Spanopoulou A, Kapurniotu A. Peptide-Based Molecular Strategies To Interfere with Protein Misfolding, Aggregation, and Cell Degeneration. Angew Chem Int Ed Engl 2020; 59:3372-3384. [PMID: 31529602 PMCID: PMC7064928 DOI: 10.1002/anie.201906908] [Citation(s) in RCA: 72] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Indexed: 12/31/2022]
Abstract
Protein misfolding into amyloid fibrils is linked to more than 40 as yet incurable cell- and neurodegenerative diseases such as Alzheimer's disease, Parkinson's disease, and type 2 diabetes. So far, however, only one of the numerous anti-amyloid molecules has reached patients. This Minireview gives an overview of molecular strategies and peptide chemistry "tools" to design, develop, and discover peptide-based molecules as anti-amyloid drug candidates. We focus on two major inhibitor rational design strategies: 1) the oldest and most common strategy, based on molecular recognition elements of amyloid self-assembly, and 2) a more recent approach, based on cross-amyloid interactions. We discuss why peptide-based amyloid inhibitors, in particular their advanced generations, can be promising leads or candidates for anti-amyloid drugs as well as valuable tools for deciphering amyloid-mediated cell damage and its link to disease pathogenesis.
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Affiliation(s)
- Valentina Armiento
- Division of Peptide BiochemistryTUM School of Life SciencesTechnische Universität MünchenEmil-Erlenmeyer-Forum 585354FreisingGermany
| | - Anna Spanopoulou
- Division of Peptide BiochemistryTUM School of Life SciencesTechnische Universität MünchenEmil-Erlenmeyer-Forum 585354FreisingGermany
- Current address: Coriolis Pharma Research GmbHFraunhoferstrasse 18B82152PlaneggGermany
| | - Aphrodite Kapurniotu
- Division of Peptide BiochemistryTUM School of Life SciencesTechnische Universität MünchenEmil-Erlenmeyer-Forum 585354FreisingGermany
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58
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Wang C, Qiao Q, Chi W, Chen J, Liu W, Tan D, McKechnie S, Lyu D, Jiang X, Zhou W, Xu N, Zhang Q, Xu Z, Liu X. Quantitative Design of Bright Fluorophores and AIEgens by the Accurate Prediction of Twisted Intramolecular Charge Transfer (TICT). Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201916357] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Chao Wang
- Fluorescence Research GroupSingapore University of Technology and Design 8 Somapah Road Singapore 487372 Singapore
- CAS Key Laboratory of Separation Science for Analytical ChemistryDalian Institute of Chemical PhysicsChinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
| | - Qinglong Qiao
- CAS Key Laboratory of Separation Science for Analytical ChemistryDalian Institute of Chemical PhysicsChinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
| | - Weijie Chi
- Fluorescence Research GroupSingapore University of Technology and Design 8 Somapah Road Singapore 487372 Singapore
| | - Jie Chen
- CAS Key Laboratory of Separation Science for Analytical ChemistryDalian Institute of Chemical PhysicsChinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
| | - Wenjuan Liu
- CAS Key Laboratory of Separation Science for Analytical ChemistryDalian Institute of Chemical PhysicsChinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
| | - Davin Tan
- Fluorescence Research GroupSingapore University of Technology and Design 8 Somapah Road Singapore 487372 Singapore
| | - Scott McKechnie
- Department of PhysicsKings College London London WC2R 2LS UK
| | - Da Lyu
- Department of ChemistryNational University of Singapore 21 Lower Kent Ridge Rd Singapore 119077 Singapore
| | - Xiao‐Fang Jiang
- School of Physics and Telecommunication EngineeringSouth China Normal University Guangzhou 510006 China
| | - Wei Zhou
- CAS Key Laboratory of Separation Science for Analytical ChemistryDalian Institute of Chemical PhysicsChinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
| | - Ning Xu
- CAS Key Laboratory of Separation Science for Analytical ChemistryDalian Institute of Chemical PhysicsChinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
| | - Qisheng Zhang
- MOE Key Laboratory of Macromolecular Synthesis and FunctionalizationDepartment of Polymer Science and EngineeringZhejiang University Hangzhou 310027 China
| | - Zhaochao Xu
- CAS Key Laboratory of Separation Science for Analytical ChemistryDalian Institute of Chemical PhysicsChinese Academy of Sciences 457 Zhongshan Road Dalian 116023 China
| | - Xiaogang Liu
- Fluorescence Research GroupSingapore University of Technology and Design 8 Somapah Road Singapore 487372 Singapore
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59
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Wang C, Qiao Q, Chi W, Chen J, Liu W, Tan D, McKechnie S, Lyu D, Jiang XF, Zhou W, Xu N, Zhang Q, Xu Z, Liu X. Quantitative Design of Bright Fluorophores and AIEgens by the Accurate Prediction of Twisted Intramolecular Charge Transfer (TICT). Angew Chem Int Ed Engl 2020; 59:10160-10172. [PMID: 31943591 DOI: 10.1002/anie.201916357] [Citation(s) in RCA: 85] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Indexed: 01/10/2023]
Abstract
Inhibition of TICT can significantly increase the brightness of fluorescent materials. Accurate prediction of TICT is thus critical for the quantitative design of high-performance fluorophores and AIEgens. TICT of 14 types of popular organic fluorophores were modeled with time-dependent density functional theory (TD-DFT). A reliable and generalizable computational approach for modeling TICT formations was established. To demonstrate the prediction power of our approach, we quantitatively designed a boron dipyrromethene (BODIPY)-based AIEgen which exhibits (almost) barrierless TICT rotations in monomers. Subsequent experiments validated our molecular design and showed that the aggregation of this compound turns on bright emissions with ca. 27-fold fluorescence enhancement, as TICT formation is inhibited in molecular aggregates.
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Affiliation(s)
- Chao Wang
- Fluorescence Research Group, Singapore University of Technology and Design, 8 Somapah Road, Singapore, 487372, Singapore.,CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China
| | - Qinglong Qiao
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China
| | - Weijie Chi
- Fluorescence Research Group, Singapore University of Technology and Design, 8 Somapah Road, Singapore, 487372, Singapore
| | - Jie Chen
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China
| | - Wenjuan Liu
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China
| | - Davin Tan
- Fluorescence Research Group, Singapore University of Technology and Design, 8 Somapah Road, Singapore, 487372, Singapore
| | - Scott McKechnie
- Department of Physics, Kings College London, London, WC2R 2LS, UK
| | - Da Lyu
- Department of Chemistry, National University of Singapore, 21 Lower Kent Ridge Rd, Singapore, 119077, Singapore
| | - Xiao-Fang Jiang
- School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou, 510006, China
| | - Wei Zhou
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China
| | - Ning Xu
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China
| | - Qisheng Zhang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Zhaochao Xu
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China
| | - Xiaogang Liu
- Fluorescence Research Group, Singapore University of Technology and Design, 8 Somapah Road, Singapore, 487372, Singapore
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60
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Wu S, Huang L, Hou Y, Liu X, Kim J, Liang Y, Zhao J, Zhang L, Ji H, Lee M, Huang Z. Catalytically-active porous assembly with dynamic pulsating motion for efficient exchange of products and reagents. Commun Chem 2020; 3:11. [PMID: 36703427 PMCID: PMC9814577 DOI: 10.1038/s42004-020-0259-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Accepted: 01/09/2020] [Indexed: 01/29/2023] Open
Abstract
Despite recent advances in the use of porous materials as efficient heterogeneous catalysts which operate through effectively trapping reagents in a well-defined space, continuously uptaking reagents to substitute products in the cavity for efficient product turnover still remains challenging. Here, a porous catalyst is endowed with 'breathing' characteristics by thermal stimulus, which can enable the efficient exchange of reagents and products through reversible stacking from inflated aromatic hexamers to contracted trimeric macrocycles. The contracted super-hydrophobic tubular interior with pyridine environment exhibits catalytic activity towards a nucleophilic aromatic substitution reaction by promoting interactions between concentrated reagents and active sites. Subsequent expansion facilitates the exchange of products and reagents, which ensures the next reaction. The strategy of mesoporous modification with inflatable transition may provide a new insight for construction of dynamic catalysts.
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Affiliation(s)
- Shanshan Wu
- Fine Chemical Industry Research Institute and PCFM Lab, School of Chemistry, Sun Yat-sen University, Guangzhou, 510275, PR China
| | - Liping Huang
- Fine Chemical Industry Research Institute and PCFM Lab, School of Chemistry, Sun Yat-sen University, Guangzhou, 510275, PR China
| | - Yu Hou
- Fine Chemical Industry Research Institute and PCFM Lab, School of Chemistry, Sun Yat-sen University, Guangzhou, 510275, PR China
| | - Xin Liu
- State Key Laboratory for Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, PR China
| | - Jehan Kim
- Pohang Accelerator Laboratory, Postech, Pohang, Gyeongbuk, Korea
| | - Yongri Liang
- College of Materials Science and Engineering, Beijing Institute of Petrochemical Technology, Beijing, 102617, PR China
| | - Jiong Zhao
- Department of Applied Physics, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
| | - Liwei Zhang
- Fine Chemical Industry Research Institute and PCFM Lab, School of Chemistry, Sun Yat-sen University, Guangzhou, 510275, PR China
| | - Hongbing Ji
- Fine Chemical Industry Research Institute and PCFM Lab, School of Chemistry, Sun Yat-sen University, Guangzhou, 510275, PR China
| | - Myongsoo Lee
- State Key Laboratory for Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, PR China
| | - Zhegang Huang
- Fine Chemical Industry Research Institute and PCFM Lab, School of Chemistry, Sun Yat-sen University, Guangzhou, 510275, PR China.
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61
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Bondia P, Torra J, Tone CM, Sawazaki T, del Valle A, Sot B, Nonell S, Kanai M, Sohma Y, Flors C. Nanoscale View of Amyloid Photodynamic Damage. J Am Chem Soc 2019; 142:922-930. [DOI: 10.1021/jacs.9b10632] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Patricia Bondia
- Madrid Institute for Advanced Studies in Nanoscience (IMDEA Nanociencia), C/Faraday 9, Madrid 28049, Spain
| | - Joaquim Torra
- Madrid Institute for Advanced Studies in Nanoscience (IMDEA Nanociencia), C/Faraday 9, Madrid 28049, Spain
| | - Caterina M. Tone
- Madrid Institute for Advanced Studies in Nanoscience (IMDEA Nanociencia), C/Faraday 9, Madrid 28049, Spain
| | - Taka Sawazaki
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Adrián del Valle
- Madrid Institute for Advanced Studies in Nanoscience (IMDEA Nanociencia), C/Faraday 9, Madrid 28049, Spain
| | - Begoña Sot
- Madrid Institute for Advanced Studies in Nanoscience (IMDEA Nanociencia), C/Faraday 9, Madrid 28049, Spain
| | - Santi Nonell
- Institut Químic de Sarrià, Universitat Ramon Llull, Via Augusta 390, Barcelona 08017, Spain
| | - Motomu Kanai
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Youhei Sohma
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Cristina Flors
- Madrid Institute for Advanced Studies in Nanoscience (IMDEA Nanociencia), C/Faraday 9, Madrid 28049, Spain
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62
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Du Z, Yu D, Du X, Scott P, Ren J, Qu X. Self-triggered click reaction in an Alzheimer's disease model: in situ bifunctional drug synthesis catalyzed by neurotoxic copper accumulated in amyloid-β plaques. Chem Sci 2019; 10:10343-10350. [PMID: 32110322 PMCID: PMC6984331 DOI: 10.1039/c9sc04387j] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2019] [Accepted: 09/14/2019] [Indexed: 12/15/2022] Open
Abstract
Cu is one of the essential elements for life. Its dyshomeostasis has been demonstrated to be closely related to neurodegenerative disorders, such as Alzheimer's disease (AD), which is characterized by amyloid-β (Aβ) aggregation and Cu accumulation. It is a great challenge as to how to take advantage of neurotoxic Cu to fight disease and make it helpful. Herein, we report that the accumulated Cu in Aβ plaques can effectively catalyze an azide-alkyne bioorthogonal cycloaddition reaction for fluorophore activation and drug synthesis in living cells, a transgenic AD model of Caenorhabditis elegans CL2006, and brain slices of triple transgenic AD mice. More importantly, the in situ synthesized bifunctional drug 6 can disassemble Aβ-Cu aggregates by extracting Cu and photo-oxygenating Aβ synergistically, suppressing Aβ-mediated paralysis and diminishing the locomotion defects of the AD model CL2006 strain. Our results demonstrate that taking the accumulated Cu ions in the Aβ plaque for an in situ click reaction can achieve both a self-triggered and self-regulated drug synthesis for AD therapy. To the best of our knowledge, a click reaction catalyzed by local Cu in a physiological environment has not been reported. This work may open up a new avenue for in situ multifunctional drug synthesis by using endogenous neurotoxic metal ions for the treatment of neurodegenerative diseases.
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Affiliation(s)
- Zhi Du
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization , Changchun Institute of Applied Chemistry , Chinese Academy of Sciences , Changchun , Jilin 130022 , China .
- University of Chinese Academy of Sciences , Beijing 100039 , China
| | - Dongqin Yu
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization , Changchun Institute of Applied Chemistry , Chinese Academy of Sciences , Changchun , Jilin 130022 , China .
- University of Science and Technology of China , Hefei , Anhui 230029 , China
| | - Xiubo Du
- College of Life Sciences and Oceanography , Shenzhen Key Laboratory of Microbial Genetic Engineering , Shenzhen University , Shenzhen , 518060 , China
| | - Peter Scott
- Department of Chemistry , University of Warwick , Gibbet Hill Road , Coventry CV4 7AL , UK
| | - Jinsong Ren
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization , Changchun Institute of Applied Chemistry , Chinese Academy of Sciences , Changchun , Jilin 130022 , China .
| | - Xiaogang Qu
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization , Changchun Institute of Applied Chemistry , Chinese Academy of Sciences , Changchun , Jilin 130022 , China .
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63
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Armiento V, Spanopoulou A, Kapurniotu A. Peptid‐basierte molekulare Strategien zum Einsatz bei Proteinfehlfaltung, Proteinaggregation und Zelldegeneration. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201906908] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Valentina Armiento
- Fachgebiet PeptidbiochemieTUM School of Life SciencesTechnische Universität München Emil-Erlenmeyer-Forum 5 85354 Freising Deutschland
| | - Anna Spanopoulou
- Fachgebiet PeptidbiochemieTUM School of Life SciencesTechnische Universität München Emil-Erlenmeyer-Forum 5 85354 Freising Deutschland
- Aktuelle Adresse: Coriolis Pharma Research GmbH Fraunhoferstraße 18B 82152 Planegg Deutschland
| | - Aphrodite Kapurniotu
- Fachgebiet PeptidbiochemieTUM School of Life SciencesTechnische Universität München Emil-Erlenmeyer-Forum 5 85354 Freising Deutschland
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64
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Chen X, Ye F, Luo X, Liu X, Zhao J, Wang S, Zhou Q, Chen G, Wang P. Histidine-Specific Peptide Modification via Visible-Light-Promoted C–H Alkylation. J Am Chem Soc 2019; 141:18230-18237. [DOI: 10.1021/jacs.9b09127] [Citation(s) in RCA: 87] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Xiaoping Chen
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Farong Ye
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Xiaosheng Luo
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Xueyi Liu
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Jie Zhao
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Siyao Wang
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Qingqing Zhou
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Gong Chen
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Ping Wang
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
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65
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Okamoto H, Taniguchi A, Usami S, Taguchi A, Takayama K, Hayashi Y. Inactivation of myostatin by photo-oxygenation using catalyst-functionalized peptides. Chem Commun (Camb) 2019; 55:9108-9111. [PMID: 31298230 DOI: 10.1039/c9cc04368c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Inhibition of myostatin is an attractive treatment for muscular dystrophy and other amyotrophic diseases. A myostatin-binding peptide was functionalized by equipped with an on/off switchable photo-oxygenation catalyst. This peptide induces a selective oxygenation of myostatin under near-infrared light, resulting in inactivation of myostatin. This peptide shows several orders of magnitude greater inhibitory effect than the original peptide.
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Affiliation(s)
- Hideyuki Okamoto
- Department of Medicinal Chemistry, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, Tokyo 192-0392, Japan.
| | - Atsuhiko Taniguchi
- Department of Medicinal Chemistry, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, Tokyo 192-0392, Japan.
| | - Shoya Usami
- Department of Medicinal Chemistry, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, Tokyo 192-0392, Japan.
| | - Akihiro Taguchi
- Department of Medicinal Chemistry, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, Tokyo 192-0392, Japan.
| | - Kentaro Takayama
- Department of Medicinal Chemistry, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, Tokyo 192-0392, Japan.
| | - Yoshio Hayashi
- Department of Medicinal Chemistry, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, Tokyo 192-0392, Japan.
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66
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Sun H, Lv F, Liu L, Wang S. Reactive Conjugated Polymers for the Modulation of Islet Amyloid Polypeptide Assembly. ACS APPLIED MATERIALS & INTERFACES 2019; 11:22973-22978. [PMID: 31252497 DOI: 10.1021/acsami.9b05247] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Misfolding and abnormal assembly of proteins cause many intractable diseases. The modulation of the assembly process of these proteins could contribute to understanding and controlling amyloid protein aggregation. Previous works focused mainly on the inhibition of the assembly process. To broaden the interaction modality of modulators with proteins for developing new modulators, in this work, we designed and synthesized two reactive poly ( p-phenylene vinylene) polymers, respectively, functionalized with N-hydroxysuccinimide ester (PPV-NHS) and pentafluorophenol ester (PPV-PFP), which exhibited the prevention or co-assembly effect on the aggregation process of islet amyloid polypeptide (IAPP). Cell assays demonstrated that both of the two polymers could effectively eliminate the cytotoxicity of IAPP. Moreover, PPV-NHS also could irreversibly disrupt preformed IAPP fibrils. We envision that PPV-NHS and PPV-PFP might offer a new design method for the modulation of protein assembly.
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Affiliation(s)
- Han Sun
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry , Chinese Academy of Sciences , Beijing 100910 , P. R. China
- College of Chemistry , University of Chinese Academy of Sciences , Beijing 100049 , P. R. China
| | - Fengting Lv
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry , Chinese Academy of Sciences , Beijing 100910 , P. R. China
- College of Chemistry , University of Chinese Academy of Sciences , Beijing 100049 , P. R. China
| | - Libing Liu
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry , Chinese Academy of Sciences , Beijing 100910 , P. R. China
- College of Chemistry , University of Chinese Academy of Sciences , Beijing 100049 , P. R. China
| | - Shu Wang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry , Chinese Academy of Sciences , Beijing 100910 , P. R. China
- College of Chemistry , University of Chinese Academy of Sciences , Beijing 100049 , P. R. China
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67
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Taniguchi A, Sawazaki T, Shimizu Y, Sohma Y, Kanai M. Photophysical properties and application in live cell imaging of B,B-fluoro-perfluoroalkyl BODIPYs. MEDCHEMCOMM 2019; 10:1121-1125. [PMID: 31391884 PMCID: PMC6657624 DOI: 10.1039/c9md00011a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Accepted: 03/15/2019] [Indexed: 11/21/2022]
Abstract
The photophysical properties of newly identified B,B-fluoro-perfluoroalkyl BODIPYs (2 and 3), which possess a fluoro group and a trifluoromethyl or pentafluoroethyl group at the boron center, were investigated. B,B-Fluoro-perfluoroalkyl BODIPYs 2 and 3 exhibited better photophysical/chemical properties than B,B-difluoro-BODIPY 1, as follows: (1) higher photostability both in methanol solvent and in a live cell environment, (2) higher stability against acid degradation, and (3) improved fluorescence signal-to-noise ratios in a cell system. These favorable properties of B,B-fluoro-perfluoroalkyl BODIPYs are likely due to the highly electron-withdrawing nature of the perfluoroalkyl groups on the boron atom, which reduces the reactivity to 1O2 and strengthens the complexation of the dipyrromethene ligands to the boron atom. Thus, B,B-fluoro perfluoroalkyl BODIPYs may be useful functional molecules for various applications.
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Affiliation(s)
- Atsuhiko Taniguchi
- Graduate School of Pharmaceutical Sciences , The University of Tokyo , 7-3-1, Hongo, Bunkyo-ku , Tokyo 113-0033 , Japan . ;
| | - Taka Sawazaki
- Graduate School of Pharmaceutical Sciences , The University of Tokyo , 7-3-1, Hongo, Bunkyo-ku , Tokyo 113-0033 , Japan . ;
| | - Yusuke Shimizu
- Graduate School of Pharmaceutical Sciences , The University of Tokyo , 7-3-1, Hongo, Bunkyo-ku , Tokyo 113-0033 , Japan . ;
| | - Youhei Sohma
- Graduate School of Pharmaceutical Sciences , The University of Tokyo , 7-3-1, Hongo, Bunkyo-ku , Tokyo 113-0033 , Japan . ;
| | - Motomu Kanai
- Graduate School of Pharmaceutical Sciences , The University of Tokyo , 7-3-1, Hongo, Bunkyo-ku , Tokyo 113-0033 , Japan . ;
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68
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Kang J, Nam JS, Lee HJ, Nam G, Rhee HW, Kwon TH, Lim MH. Chemical strategies to modify amyloidogenic peptides using iridium(iii) complexes: coordination and photo-induced oxidation. Chem Sci 2019; 10:6855-6862. [PMID: 31391908 PMCID: PMC6657414 DOI: 10.1039/c9sc00931k] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2019] [Accepted: 06/03/2019] [Indexed: 12/20/2022] Open
Abstract
Effective chemical strategies, i.e., coordination and coordination-/photo-mediated oxidation, are rationally developed towards modification of amyloidogenic peptides and subsequent control of their aggregation and toxicity.
Amyloidogenic peptides are considered central pathological contributors towards neurodegeneration as observed in neurodegenerative disorders [e.g., amyloid-β (Aβ) peptides in Alzheimer's disease (AD)]; however, their roles in the pathologies of such diseases have not been fully elucidated since they are challenging targets to be studied due to their heterogeneous nature and intrinsically disordered structure. Chemical approaches to modify amyloidogenic peptides would be valuable in advancing our molecular-level understanding of their involvement in neurodegeneration. Herein, we report effective chemical strategies for modification of Aβ peptides (i.e., coordination and coordination-/photo-mediated oxidation) implemented by a single Ir(iii) complex in a photo-dependent manner. Such peptide variations can be achieved by our rationally designed Ir(iii) complexes (Ir-Me, Ir-H, Ir-F, and Ir-F2) leading to significantly modulating the aggregation pathways of two main Aβ isoforms, Aβ40 and Aβ42, as well as the production of toxic Aβ species. Overall, we demonstrate chemical tactics for modification of amyloidogenic peptides in an effective and manageable manner utilizing the coordination capacities and photophysical properties of transition metal complexes.
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Affiliation(s)
- Juhye Kang
- Department of Chemistry , Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 34141 , Republic of Korea . .,Department of Chemistry , Ulsan National Institute of Science and Technology (UNIST) , Ulsan 44919 , Republic of Korea .
| | - Jung Seung Nam
- Department of Chemistry , Ulsan National Institute of Science and Technology (UNIST) , Ulsan 44919 , Republic of Korea .
| | - Hyuck Jin Lee
- Department of Chemistry , Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 34141 , Republic of Korea . .,Department of Chemistry Education , Kongju National University , Gongju 32588 , Republic of Korea
| | - Geewoo Nam
- Department of Chemistry , Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 34141 , Republic of Korea . .,Department of Chemistry , Ulsan National Institute of Science and Technology (UNIST) , Ulsan 44919 , Republic of Korea .
| | - Hyun-Woo Rhee
- Department of Chemistry , Seoul National University , Seoul 08826 , Republic of Korea
| | - Tae-Hyuk Kwon
- Department of Chemistry , Ulsan National Institute of Science and Technology (UNIST) , Ulsan 44919 , Republic of Korea .
| | - Mi Hee Lim
- Department of Chemistry , Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 34141 , Republic of Korea .
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69
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Chung YJ, Lee BI, Park CB. Multifunctional carbon dots as a therapeutic nanoagent for modulating Cu(ii)-mediated β-amyloid aggregation. NANOSCALE 2019; 11:6297-6306. [PMID: 30882825 DOI: 10.1039/c9nr00473d] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The abnormal self-assembly of cerebral β-amyloid (Aβ) peptides into toxic aggregates is a hallmark of Alzheimer's disease (AD). Here, we report on multifunctional carbon dots that can chelate Cu(ii) ions, suppress Aβ aggregation, and photooxygenate Aβ peptides. Copper ions have high relevance to AD pathogenesis, causing Cu(ii)-mediated Aβ aggregation and oxidative damage to neuronal cells. For effective conjugation with Cu(ii)-bound Aβ complexes, we have designed carbon dots that possess nitrogen (N)-containing polyaromatic functionalities on their surface by employing o-phenylenediamine (OPD) as a polymerization precursor. We demonstrate that the polymerized OPD (pOPD)-derived carbon dots exhibit multiple capabilities against Cu(ii)-mediated Aβ aggregation. Furthermore, the pOPD-derived carbon dots exhibited dramatically enhanced absorption and fluorescence upon coordination with Cu(ii) ions and effectively photooxygenated Aβ peptides. The photodynamically modulated Aβ residues lost the propensity to coordinate with Cu(ii) and to assemble into toxic aggregates. This work demonstrates the potential of carbon dots as a multifunctional β-sheet breaker and provides a promising anti-amyloidogenic strategy for future Aβ-targeted AD treatments.
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Affiliation(s)
- You Jung Chung
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 335 Science Road, Daejeon 34141, Republic of Korea.
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70
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Directing curli polymerization with DNA origami nucleators. Nat Commun 2019; 10:1395. [PMID: 30918257 PMCID: PMC6437208 DOI: 10.1038/s41467-019-09369-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Accepted: 03/07/2019] [Indexed: 01/16/2023] Open
Abstract
The physiological or pathological formation of fibrils often relies on molecular-scale nucleators that finely control the kinetics and structural features. However, mechanistic understanding of how protein nucleators mediate fibril formation in cells remains elusive. Here, we develop a CsgB-decorated DNA origami (CB-origami) to mimic protein nucleators in Escherichia coli biofilm that direct curli polymerization. We show that CB-origami directs curli subunit CsgA monomers to form oligomers and then accelerates fibril formation by increasing the proliferation rate of primary pathways. Fibrils grow either out from (departure mode) or towards the nucleators (arrival mode), implying two distinct roles of CsgB: as nucleation sites and as trap sites to capture growing nanofibrils in vicinity. Curli polymerization follows typical stop-and-go dynamics but exhibits a higher instantaneous elongation rate compared with independent fibril growth. This origami nucleator thus provides an in vitro platform for mechanistically probing molecular nucleation and controlling directional fibril polymerization for bionanotechnology.
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71
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Liu W, Dong X, Sun Y. d-Enantiomeric RTHLVFFARK-NH 2: A Potent Multifunctional Decapeptide Inhibiting Cu 2+-Mediated Amyloid β-Protein Aggregation and Remodeling Cu 2+-Mediated Amyloid β Aggregates. ACS Chem Neurosci 2019; 10:1390-1401. [PMID: 30650306 DOI: 10.1021/acschemneuro.8b00440] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Aggregation of amyloid β-protein (Aβ) into β-sheet-rich plaques is a general feature of Alzheimer's disease (AD). Homeostasis dysregulation of Cu2+ mediates Aβ to form high cytotoxic aggregates, which causes cell damage by generation of reactive oxygen species (ROS). To improve the inhibitory potency and explore the multifaceted functions of our previously designed decapeptide, RTHLVFFARK-NH2 (RK10), we have herein reformulated the decapeptide into its d-enantiomer, rk10, and the effects of chirality on Aβ aggregation, Cu2+-mediated Aβ aggregations, and aggregate-remodeling effects were investigated. The results revealed the following: (1) The d-enantiomer presented enhanced inhibitory potency on Aβ fibrillogenesis in comparison to RK10; rk10 and RK10 increased the cell viability from 60% to 91% and 71%, respectively, at an equimolar concentration to Aβ. (2) The enantiomers were chemically equivalent to Cu2+ chelation, ROS suppression and oxidative damage rescue. (3) The d-enantiomer exhibited higher performance to inhibit Cu2+-mediated Aβ aggregation, and more significantly attenuated the cytotoxicity caused by Aβ42-Cu2+ complex than RK10. Cell viability was rescued from 51% to 89% and 74% by coincubating with rk10 and RK10 at 50 μM, respectively. Intracellular ROS levels generated by Aβ42 and Aβ42-Cu2+ species were also remarkably decreased by treating with rk10. (4) The enantiomers could remodel mature Aβ42-Cu2+ aggregates by Cu2+ chelation, and rk10 showed higher performance than RK10, as evidenced by the enhanced cell viability from 57% to 86% by RK10 and to 96% by rk10. The d-enantiomer also showed higher ability than RK10 on protecting the disrupted species from reaggregation. Taken together, D-chiral derivatization of the decapeptide resulted in a potent multifunctional agent in inhibiting Cu2+-mediated Aβ aggregation and remodeling mature Aβ-Cu2+ species. To the best of our knowledge, this is the first investigation on the chirality effect of a multifunctional peptide inhibitor on Cu2+-mediated Aβ aggregation and on the remodeling effect of mature Aβ-Cu2+ aggregates. The work provides new insights into the critical role of chirality in the multifaceted functions of peptide inhibitors against amyloid formation and its toxicity.
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Affiliation(s)
- Wei Liu
- Department of Biochemical Engineering and Key Laboratory of Systems Bioengineering of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300354, China
| | - Xiaoyan Dong
- Department of Biochemical Engineering and Key Laboratory of Systems Bioengineering of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300354, China
| | - Yan Sun
- Department of Biochemical Engineering and Key Laboratory of Systems Bioengineering of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300354, China
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72
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Sohma Y, Kanai M. Development of Artificial Catalysts that Selectively Photooxygenate Pathogenic Amyloid. J SYN ORG CHEM JPN 2019. [DOI: 10.5059/yukigoseikyokaishi.77.246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Youhei Sohma
- Graduate School of Pharmaceutical Sciences, The University of Tokyo
| | - Motomu Kanai
- Graduate School of Pharmaceutical Sciences, The University of Tokyo
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73
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Yu D, Guan Y, Bai F, Du Z, Gao N, Ren J, Qu X. Metal–Organic Frameworks Harness Cu Chelating and Photooxidation Against Amyloid β Aggregation in Vivo. Chemistry 2019; 25:3489-3495. [DOI: 10.1002/chem.201805835] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Revised: 12/30/2018] [Indexed: 12/22/2022]
Affiliation(s)
- Dongqin Yu
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource UtilizationChangchun Institute of Applied Chemistry, Chinese Academy of Sciences Changchun Jilin 130022 P. R. China
- University of Science and Technology of China Hefei Anhui 230026 P. R. China
| | - Yijia Guan
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource UtilizationChangchun Institute of Applied Chemistry, Chinese Academy of Sciences Changchun Jilin 130022 P. R. China
- University of Chinese Academy of Sciences Beijing 100039 P. R. China
| | - Fuquan Bai
- International Joint Research Laboratory of, Nano-Micro Architecture ChemistryInstitute of Theoretical ChemistryJilin University, Changchun Jilin 130021 P. R. China
| | - Zhi Du
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource UtilizationChangchun Institute of Applied Chemistry, Chinese Academy of Sciences Changchun Jilin 130022 P. R. China
- University of Chinese Academy of Sciences Beijing 100039 P. R. China
| | - Nan Gao
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource UtilizationChangchun Institute of Applied Chemistry, Chinese Academy of Sciences Changchun Jilin 130022 P. R. China
| | - Jinsong Ren
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource UtilizationChangchun Institute of Applied Chemistry, Chinese Academy of Sciences Changchun Jilin 130022 P. R. China
| | - Xiaogang Qu
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource UtilizationChangchun Institute of Applied Chemistry, Chinese Academy of Sciences Changchun Jilin 130022 P. R. China
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74
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Lee BI, Chung YJ, Park CB. Photosensitizing materials and platforms for light-triggered modulation of Alzheimer's β-amyloid self-assembly. Biomaterials 2019; 190-191:121-132. [DOI: 10.1016/j.biomaterials.2018.10.043] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Revised: 10/12/2018] [Accepted: 10/28/2018] [Indexed: 12/12/2022]
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75
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Suzuki T, Hori Y, Sawazaki T, Shimizu Y, Nemoto Y, Taniguchi A, Ozawa S, Sohma Y, Kanai M, Tomita T. Photo-oxygenation inhibits tau amyloid formation. Chem Commun (Camb) 2019; 55:6165-6168. [DOI: 10.1039/c9cc01728c] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Amyloid-selective catalytic photo-oxygenation of the tau protein is a possible therapeutic strategy for Alzheimer's disease, via the inhibition of tau fibril formation.
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76
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Wang T, Zhang L, Wang J, Feng Y, Xu E, Mao X, Liu L. Evaluation of the photo-degradation of Alzheimer's amyloid fibrils with a label-free approach. Chem Commun (Camb) 2018; 54:13084-13087. [PMID: 30394470 PMCID: PMC6404227 DOI: 10.1039/c8cc07164k] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Degradation of amyloid-β (Aβ) aggregates has been considered as an attractive therapeutic and preventive strategy against Alzheimer's disease (AD). However, an in situ, real-time, and label-free technique is still lacking to understand the degradation process of Aβ aggregates. In this work, we developed a novel method to quantitatively evaluate the degradation of Aβ fibrils by photoactive meso-tetra(4-sulfonatophenyl)porphyrin under UV irradiation with quartz crystal microbalance (QCM).
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Affiliation(s)
- Tianke Wang
- Institute for Advanced Materials, Jiangsu University, China.
| | - Liwei Zhang
- Institute for Advanced Materials, Jiangsu University, China.
| | - Jie Wang
- Institute for Advanced Materials, Jiangsu University, China.
| | - Yonghai Feng
- Institute for Advanced Materials, Jiangsu University, China.
| | - Enquan Xu
- Institute for Cell Engineering, Department of Neurology, Johns Hopkins University School of Medicine, Baltimore,
| | - Xiaobo Mao
- Institute for Cell Engineering, Department of Neurology, Johns Hopkins University School of Medicine, Baltimore,
| | - Lei Liu
- Institute for Advanced Materials, Jiangsu University, China.
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77
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Bottecchia C, Noël T. Photocatalytic Modification of Amino Acids, Peptides, and Proteins. Chemistry 2018; 25:26-42. [PMID: 30063101 PMCID: PMC6348373 DOI: 10.1002/chem.201803074] [Citation(s) in RCA: 128] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Revised: 07/27/2018] [Indexed: 02/06/2023]
Abstract
In the last decade, visible‐light photoredox catalysis has emerged as a powerful strategy to enable novel transformations in organic synthesis. Owing to mild reaction conditions (i.e., room temperature, use of visible light) and high functional‐group tolerance, photoredox catalysis could represent an ideal strategy for chemoselective biomolecule modification. Indeed, a recent trend in photoredox catalysis is its application to the development of novel methodologies for amino acid modification. Herein, an up‐to‐date overview of photocatalytic methodologies for the modification of single amino acids, peptides, and proteins is provided. The advantages offered by photoredox catalysis and its suitability in the development of novel biocompatible methodologies are described. In addition, a brief consideration of the current limitations of photocatalytic approaches, as well as future challenges to be addressed, are discussed.
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Affiliation(s)
- Cecilia Bottecchia
- Department of Chemical Engineering and Chemistry, Micro Flow Chemistry and Process Technology, Eindhoven University of Technology, De Rondom 70 (STO 1.37), 5612 AP, Eindhoven, The Netherlands
| | - Timothy Noël
- Department of Chemical Engineering and Chemistry, Micro Flow Chemistry and Process Technology, Eindhoven University of Technology, De Rondom 70 (STO 1.37), 5612 AP, Eindhoven, The Netherlands
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78
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Wang J, Fan Y, Tan Y, Zhao X, Zhang Y, Cheng C, Yang M. Porphyrinic Metal-Organic Framework PCN-224 Nanoparticles for Near-Infrared-Induced Attenuation of Aggregation and Neurotoxicity of Alzheimer's Amyloid-β Peptide. ACS APPLIED MATERIALS & INTERFACES 2018; 10:36615-36621. [PMID: 30338980 DOI: 10.1021/acsami.8b15452] [Citation(s) in RCA: 76] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The aberrant aggregation of amyloid-β peptide (Aβ) in the brain has been considered as the major pathological hallmark of Alzheimer's diseases (AD). Inhibition of Aβ aggregation is considered as an attractive therapeutic intervention for alleviating amyloid-associated neurotoxicity. Here, we report the near-infrared light (NIR)-induced suppression of Aβ aggregation and reduction of Aβ-induced cytotoxicity via porphyrinic metal-organic framework (MOF) PCN-224 nanoparticles. PCN-224 nanoparticles are hydrothermally synthesized by coordinating tetra-kis(4-carboxyphenyl)porphyrin (TCPP) ligands with zirconium. The PCN-224 nanoparticles show high photo-oxygenation efficiency, good biocompatibility, and high stability. The study reveals that the porphyrinic MOF-based nanoprobe activated by NIR light could successfully inhibit self-assembly of monomeric Aβ into a β-sheet-rich structure. Furthermore, photoexcited PCN-224 nanoparticles also significantly reduce Aβ-induced cytotoxicity under NIR irradiation.
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Affiliation(s)
- Jiuhai Wang
- Department of Biomedical Engineering , The Hong Kong Polytechnic University , Hong Kong SAR , China
| | - Yadi Fan
- Department of Biomedical Engineering , The Hong Kong Polytechnic University , Hong Kong SAR , China
| | - Youhua Tan
- Department of Biomedical Engineering , The Hong Kong Polytechnic University , Hong Kong SAR , China
| | - Xin Zhao
- Department of Biomedical Engineering , The Hong Kong Polytechnic University , Hong Kong SAR , China
| | - Yu Zhang
- Department of Mechanical and Automotive Engineering , Royal Melbourne Institute of Technology University , Melbourne , Victoria 3000 , Australia
| | - Changming Cheng
- Department of Biomedical Engineering , The Hong Kong Polytechnic University , Hong Kong SAR , China
| | - Mo Yang
- Department of Biomedical Engineering , The Hong Kong Polytechnic University , Hong Kong SAR , China
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79
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Leshem G, Richman M, Lisniansky E, Antman-Passig M, Habashi M, Gräslund A, Wärmländer SKTS, Rahimipour S. Photoactive chlorin e6 is a multifunctional modulator of amyloid-β aggregation and toxicity via specific interactions with its histidine residues. Chem Sci 2018; 10:208-217. [PMID: 30713632 PMCID: PMC6333166 DOI: 10.1039/c8sc01992d] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Accepted: 10/03/2018] [Indexed: 11/23/2022] Open
Abstract
Photoactive chlorin e6 selectively damage the histidine residues of amyloid-β and reduce its aggregation and toxicity even in the presence of Cu ions.
The self-assembly of Aβ to β-sheet-rich neurotoxic oligomers is a main pathological event leading to Alzheimer's disease (AD). Selective targeting of Aβ oligomers without affecting other functional proteins is therefore an attractive approach to prevent the disease and its progression. In this study, we report that photodynamic treatment of Aβ in the presence of catalytic amounts of chlorin e6 can selectively damage Aβ and inhibit its aggregation and toxicity. Chlorin e6 also reversed the amyloid aggregation process in the dark by binding its soluble and low molecular weight oligomers, as shown by thioflavin T (ThT) fluorescence and photoinduced cross-linking of unmodified protein (PICUP) methods. Using HSQC NMR spectroscopy, ThT assays, amino acid analysis, SDS/PAGE, and EPR spectroscopy, we show that catalytic amounts of photoexcited chlorin e6 selectively damage the Aβ histidine residues H6, H13, and H14, and induce Aβ cross-linking by generating singlet oxygen. In contrast, photoexcited chlorin e6 was unable to cross-link ubiquitin and α-synuclein, demonstrating its high selectivity for Aβ. By binding to the Aβ histidine residues, catalytic amounts of chlorin e6 can also inhibit the Cu2+-induced aggregation and toxicity in darkness, while at stoichiometric amounts it acts as a chelator to reduce the amount of free Cu2+. This study demonstrates the great potential of chlorin e6 as a multifunctional agent for treatment of AD, and shows that the three N-terminal Aβ histidine residues are a suitable target for Aβ-specific drugs.
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Affiliation(s)
- Guy Leshem
- Department of Chemistry , Bar-Ilan University , Ramat-Gan 5290002 , Israel .
| | - Michal Richman
- Department of Chemistry , Bar-Ilan University , Ramat-Gan 5290002 , Israel .
| | - Elvira Lisniansky
- Department of Chemistry , Bar-Ilan University , Ramat-Gan 5290002 , Israel .
| | - Merav Antman-Passig
- Department of Chemistry , Bar-Ilan University , Ramat-Gan 5290002 , Israel .
| | - Maram Habashi
- Department of Chemistry , Bar-Ilan University , Ramat-Gan 5290002 , Israel .
| | - Astrid Gräslund
- Department of Biochemistry and Biophysics , Arrhenius Laboratories , Stockholm University , S-106 91 Stockholm , Sweden .
| | - Sebastian K T S Wärmländer
- Department of Biochemistry and Biophysics , Arrhenius Laboratories , Stockholm University , S-106 91 Stockholm , Sweden .
| | - Shai Rahimipour
- Department of Chemistry , Bar-Ilan University , Ramat-Gan 5290002 , Israel .
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80
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Du Z, Gao N, Wang X, Ren J, Qu X. Near-Infrared Switchable Fullerene-Based Synergy Therapy for Alzheimer's Disease. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1801852. [PMID: 30028575 DOI: 10.1002/smll.201801852] [Citation(s) in RCA: 83] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Revised: 06/12/2018] [Indexed: 05/28/2023]
Abstract
C60 has a special dual function; it can act as both a powerful reactive oxygen species (ROS) producer under UV or visible light and an ROS scavenger in the dark. However, ROS has double-edged effects in living systems. It is still a great challenge for biomedical application to switch and adjust the two opposite properties of C60 in one system. Herein, UCNP@C60 -pep (UCNP: upconversion nanoparticle, pep: Aβ-target peptide KLVFF) is designed as a near-infrared-switchable nanoplatform for synergy therapy of Alzheimer's disease (AD). Under near-infrared (NIR) light, the Aβ-targeting hybrid nanoparticles produce ROS and result in Aβ photooxygenation, which can hinder Aβ aggregation and mitigate the attendant cytotoxicity. In the dark, UCNP@C60 -pep shows protective effects against the increased oxidative stress. The ROS-generating and ROS-quenching abilities of UCNP@C60 -pep are both beneficial for decreasing Aβ-induced neurotoxicity and extending the longevity of the commonly used transgenic AD model Caenorhabditis elegans CL2006. Moreover, UCNP@C60-pep can also be used for upconversion luminescence (UCL) and magnetic resonance imaging (MRI), which has benefits for "image-guided therapy." This study may offer a new perspective for the biological applications of C60 .
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Affiliation(s)
- Zhi Du
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Jilin, Changchun, 130022, China
- University of Chinese Academy of Sciences, Beijing, 100039, China
| | - Nan Gao
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Jilin, Changchun, 130022, China
| | - Xiaohui Wang
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Jilin, Changchun, 130022, China
| | - Jinsong Ren
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Jilin, Changchun, 130022, China
| | - Xiaogang Qu
- Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Jilin, Changchun, 130022, China
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81
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Hasunuma N, Kawakami M, Hiramatsu H, Nakabayashi T. Preparation and photo-induced activities of water-soluble amyloid β-C 60 complexes. RSC Adv 2018; 8:17847-17853. [PMID: 35542080 PMCID: PMC9080474 DOI: 10.1039/c8ra02789g] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2018] [Accepted: 05/04/2018] [Indexed: 01/06/2023] Open
Abstract
We have shown that fullerene (C60) becomes soluble in water by mixing fullerene and amyloid β peptide (Aβ40) whose fibril structures are considered to be associated with Alzheimer's disease. The water-solubility of fullerene arises from the generation of a nanosized complex between fullerene and the monomer species of Aβ40 (Aβ40-C60). The prepared Aβ40-C60 exhibits photo-induced activity with visible light to induce the inhibition of Aβ40 fibrillation and the cytotoxicity for cultured HeLa cells. The observed photo-induced phenomena result from the generation of singlet oxygen via photoexcitation, inducing oxidative damage to Aβ40 and HeLa cells. The oxidized Aβ40 following photoexcitation of Aβ40-C60 was confirmed by mass spectrometry.
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Affiliation(s)
- Naoki Hasunuma
- Graduate School of Pharmaceutical Sciences, Tohoku University Sendai 980-8578 Japan
| | - Masahiro Kawakami
- Graduate School of Pharmaceutical Sciences, Tohoku University Sendai 980-8578 Japan
| | - Hirotsugu Hiramatsu
- Department of Applied Chemistry and Institute of Molecular Science, National Chiao Tung University 1001, Ta-Hsueh Road Hsinchu 30010 Taiwan
| | - Takakazu Nakabayashi
- Graduate School of Pharmaceutical Sciences, Tohoku University Sendai 980-8578 Japan
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82
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83
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Ni J, Taniguchi A, Ozawa S, Hori Y, Kuninobu Y, Saito T, Saido TC, Tomita T, Sohma Y, Kanai M. Near-Infrared Photoactivatable Oxygenation Catalysts of Amyloid Peptide. Chem 2018. [DOI: 10.1016/j.chempr.2018.02.008] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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84
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Gao J, Li J, Geng WC, Chen FY, Duan X, Zheng Z, Ding D, Guo DS. Biomarker Displacement Activation: A General Host–Guest Strategy for Targeted Phototheranostics in Vivo. J Am Chem Soc 2018; 140:4945-4953. [DOI: 10.1021/jacs.8b02331] [Citation(s) in RCA: 162] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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85
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Son G, Lee BI, Chung YJ, Park CB. Light-triggered dissociation of self-assembled β-amyloid aggregates into small, nontoxic fragments by ruthenium (II) complex. Acta Biomater 2018; 67:147-155. [PMID: 29221856 DOI: 10.1016/j.actbio.2017.11.048] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2017] [Revised: 11/16/2017] [Accepted: 11/28/2017] [Indexed: 10/18/2022]
Abstract
The self-assembly of β-amyloid (Aβ) peptides into highly stable plaques is a major hallmark of Alzheimer's disease. Here, we report visible light-driven dissociation of β-sheet-rich Aβ aggregates into small, nontoxic fragments using ruthenium (II) complex {[Ru(bpy)3]2+} that functions as a highly sensitive, biocompatible, photoresponsive anti-Aβ agent. According to our multiple analyses using thioflavin T, bicinchoninic acid, dynamic light scattering, atomic force microscopy, circular dichroism, and Fourier transform infrared spectroscopy, [Ru(bpy)3]2+ successfully disassembled Aβ aggregates by destabilizing the β-sheet secondary structure under illumination of white light-emitting diode light. We validated that photoexcited [Ru(bpy)3]2+ causes oxidative damages of Aβ peptides, resulting in the dissociation of Aβ aggregates. The efficacy of [Ru(bpy)3]2+ is attributed to reactive oxygen species, such as singlet oxygen, generated from [Ru(bpy)3]2+ that absorbed photon energy in the visible range. Furthermore, photoexcited [Ru(bpy)3]2+ strongly inhibited the self-assembly of Aβ monomers even at concentrations as low as 1 nM and reduced the cytotoxicity of Aβ aggregates. STATEMENT OF SIGNIFICANCE Alzheimer's disease is the most common progressive neurodegenerative disease, affecting more than 13% of the population over age 65. Over the last decades, researchers have focused on understanding the mechanism of amyloid formation, the hallmark of various amyloid diseases including Alzheimer's and Parkinson's. In this paper, we successfully demonstrate the dissociation of β-Amyloid (Aβ) aggregates into small, less-amyloidic fragments by photoexcited [Ru(bpy)3]2+ through destabilization of β-sheet secondary structure. We validated the light-triggered dissociation of amyloid structure using multiple analytical tools. Furthermore, we confirmed that photoexcited [Ru(bpy)3]2+ reduces cytotoxicity of Aβ aggregates. Our work should open a new horizon in the study of Alzheimer's amyloid aggregation by showing the potential of photoexcited dye molecules as an alternative therapeutic strategy for treating Alzheimer's disease in future.
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86
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Taniguchi A. [Amyloid-selective Photooxygenation toward Treatment for Amyloid Diseases]. YAKUGAKU ZASSHI 2018; 138:47-53. [PMID: 29311465 DOI: 10.1248/yakushi.17-00186-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Amyloid proteins and peptides form aggregates which lead to amyloid diseases. For example, Alzheimer's disease-related amyloid β (Aβ) forms oligomers, protofibrils, and amyloid fibrils, which exhibit neurotoxicity. Controlling the aggregation and toxicity of Aβ would be a therapeutic strategy for the treatment of Alzheimer's disease. Recently, we have investigated an artificial oxygenative modification (chemical introduction of oxygen atoms) of amyloid proteins using a photocatalyst, which attenuated the aggregation potency and toxicity of these proteins. The oxygenation of Aβ1-42 was efficiently induced using a riboflavin catalyst (1). The oxygenated Aβ was less aggregative and cytotoxic than native Aβ. The oxygenated Aβ also showed inhibitory activity against aggregation and the onset of toxicity of native Aβ. Flavin catalyst 2, bearing an Aβ-binding peptide, allowed the selective oxygenation of Aβ even in the presence of living cells, due to its Aβ-affinity. Furthermore, "On/Off" switchable photooxygenation catalysts 3 and 4, which can sense a higher-order amyloid structure (i.e., cross-β-sheet structure), were developed based on the amyloid fluorescence probe thioflavin-T. The photo-excited catalysts generated singlet oxygens to induce oxygenation when binding to the amyloid structure ("On"). In contrast, the free catalysts, without binding to the amyloid structure, produced no singlet oxygen, even if photo-excited ("Off"). This "On/Off" switchable function enabled highly Aβ-selective oxygenation. Catalyst 3 was successfully used for the selective oxygenation of other amyloid proteins and peptides. These findings suggest that amyloid-selective oxygenation could provide a versatile system in developing effective new treatments for amyloid diseases.
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Affiliation(s)
- Atsuhiko Taniguchi
- Graduate School of Pharmaceutical Sciences, The University of Tokyo.,Japan Science and Technology Agency (JST), ERATO, Kanai Life Science Catalysis Project
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87
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Sato S, Tsushima M, Nakamura H. Target-protein-selective inactivation and labelling using an oxidative catalyst. Org Biomol Chem 2018; 16:6168-6179. [DOI: 10.1039/c8ob01484a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Reactive oxygen species (ROS) and radical species generated by oxidative single-electron transfer (SET) catalysts induce local environmental oxidative reactions, resulting in protein inactivation and labelling in proximity to the catalysts.
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Affiliation(s)
- Shinichi Sato
- Laboratory for Chemistry and Life Science
- Institute of Innovative Research
- Tokyo Institute of Technology
- Yokohama
- Japan
| | - Michihiko Tsushima
- Laboratory for Chemistry and Life Science
- Institute of Innovative Research
- Tokyo Institute of Technology
- Yokohama
- Japan
| | - Hiroyuki Nakamura
- Laboratory for Chemistry and Life Science
- Institute of Innovative Research
- Tokyo Institute of Technology
- Yokohama
- Japan
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88
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Chung YJ, Kim K, Lee BI, Park CB. Carbon Nanodot-Sensitized Modulation of Alzheimer's β-Amyloid Self-Assembly, Disassembly, and Toxicity. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2017; 13:1700983. [PMID: 28714246 DOI: 10.1002/smll.201700983] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2017] [Revised: 06/02/2017] [Indexed: 05/28/2023]
Abstract
The self-assembly of amyloidogenic peptides into β-sheet-rich aggregates is a general feature of many neurodegenerative diseases, including Alzheimer's disease, which signifies the need for the effective attenuation of amyloid aggregation toward alleviating amyloid-associated neurotoxicity. This study reports that photoluminescent carbon nanodots (CDs) can effectively suppress Alzheimer's β-amyloid (Aβ) self-assembly and function as a β-sheet breaker disintegrating preformed Aβ aggregates. This study synthesizes CDs using ammonium citrate through one-pot hydrothermal treatment and passivates their surface with branched polyethylenimine (bPEI). The bPEI-coated CDs (bPEI@CDs) exhibit hydrophilic and cationic surface characteristics, which interact with the negatively charged residues of Aβ peptides, suppressing the aggregation of Aβ peptides. Under light illumination, bPEI@CDs display a more pronounced effect on Aβ aggregation and on the dissociation of β-sheet-rich assemblies through the generation of reactive oxygen species from photoactivated bPEI@CDs. The light-triggered attenuation effect of Aβ aggregation using a series of experiments, including photochemical and microscopic analysis, is verified. Furthermore, the cell viability test confirms the ability of photoactivated bPEI@CDs for the suppression of Aβ-mediated cytotoxicity, indicating bPEI@CDs' potency as an effective anti-Aβ neurotoxin agent.
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Affiliation(s)
- You Jung Chung
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Kayoung Kim
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Byung Il Lee
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Chan Beum Park
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
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89
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Luo Y, Wang Y, Chen S, Wang N, Qi Y, Zhang X, Yang M, Huang Y, Li M, Yu J, Luo D, Lu Z. Facile Access to Twisted Intramolecular Charge-Transfer Fluorogens Bearing Highly Pretwisted Donor-Acceptor Systems Together with Readily Fine-Tuned Charge-Transfer Characters. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2017; 13:1604113. [PMID: 28387442 DOI: 10.1002/smll.201604113] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Revised: 02/21/2017] [Indexed: 06/07/2023]
Abstract
Twisted intramolecular charge-transfer (TICT) fluorogens bearing highly pretwisted geometries and readily-fine-tuned charge-transfer characters are quite promising sensor and electroluminescence (EL) materials. In this study, by using 4-aryloxy-1,8-naphthalimide derivatives as the molecular framework, it is demonstrated for the first time that a CO bond could serve as the central bond to construct new TICT D-A systems. Photophysical and quantum chemical studies confirm that rotation around central CO bonds is responsible for the formation of a stable TICT state in these compounds. More importantly, owing to the structural adjustability of the aryl moiety and the strong steric interactions between the naphthalimide and the aryl ring systems, these compounds can display readily-fine-tuned TICT characters, hence exhibiting an adjustable solvent polarity threshold for aggregation-induced emission (AIE) activity, and could be AIE-active even in less-polar toluene and nonpolar cyclohexane. Furthermore, these compounds could possess highly-pretwisted ground-state geometries, hence could show good EL performance. The findings reveal a facile but effective molecular constructive strategy for versatile, high-performance optoelectronic TICT compounds.
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Affiliation(s)
- Yanju Luo
- College of Chemistry, Sichuan University, Chengdu, 610064, P. R. China
| | - Yan Wang
- Key Laboratory of Magnetic Resonance in Biological Systems, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, 430071, P. R. China
| | - Shiqi Chen
- College of Chemistry, Sichuan University, Chengdu, 610064, P. R. China
| | - Ning Wang
- College of Chemistry, Sichuan University, Chengdu, 610064, P. R. China
| | - Yige Qi
- School of Optoelectronic Information, University of Electronic Science and Technology of China College of Chemistry, Chengdu, 610054, P. R. China
| | - Xiaogen Zhang
- College of Chemistry, Sichuan University, Chengdu, 610064, P. R. China
| | - Minghui Yang
- Key Laboratory of Magnetic Resonance in Biological Systems, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, 430071, P. R. China
| | - Yan Huang
- College of Chemistry, Sichuan University, Chengdu, 610064, P. R. China
| | - Ming Li
- College of Chemistry, Sichuan University, Chengdu, 610064, P. R. China
| | - Junsheng Yu
- School of Optoelectronic Information, University of Electronic Science and Technology of China College of Chemistry, Chengdu, 610054, P. R. China
| | - Daibing Luo
- Analytical and Testing Center, Sichuan University, Chengdu, 610064, P. R. China
| | - Zhiyun Lu
- College of Chemistry, Sichuan University, Chengdu, 610064, P. R. China
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90
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Kang J, Lee SJC, Nam JS, Lee HJ, Kang MG, Korshavn KJ, Kim HT, Cho J, Ramamoorthy A, Rhee HW, Kwon TH, Lim MH. An Iridium(III) Complex as a Photoactivatable Tool for Oxidation of Amyloidogenic Peptides with Subsequent Modulation of Peptide Aggregation. Chemistry 2017; 23:1645-1653. [PMID: 27862428 DOI: 10.1002/chem.201604751] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Indexed: 02/03/2023]
Abstract
Aggregates of amyloidogenic peptides are involved in the pathogenesis of several degenerative disorders. Herein, an iridium(III) complex, Ir-1, is reported as a chemical tool for oxidizing amyloidogenic peptides upon photoactivation and subsequently modulating their aggregation pathways. Ir-1 was rationally designed based on multiple characteristics, including 1) photoproperties leading to excitation by low-energy radiation; 2) generation of reactive oxygen species responsible for peptide oxidation upon photoactivation under mild conditions; and 3) relatively easy incorporation of a ligand on the IrIII center for specific interactions with amyloidogenic peptides. Biochemical and biophysical investigations illuminate that the oxidation of representative amyloidogenic peptides (i.e., amyloid-β, α-synuclein, and human islet amyloid polypeptide) is promoted by light-activated Ir-1, which alters the conformations and aggregation pathways of the peptides. Additionally, their potential oxidation sites are identified as methionine, histidine, or tyrosine residues. Overall, our studies on Ir-1 demonstrate the feasibility of devising metal complexes as chemical tools suitable for elucidating the nature of amyloidogenic peptides at the molecular level, as well as controlling their aggregation.
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Affiliation(s)
- Juhye Kang
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Shin Jung C Lee
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Jung Seung Nam
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Hyuck Jin Lee
- School of Life Sciences, UNIST, Ulsan, 44919, Republic of Korea
| | - Myeong-Gyun Kang
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Kyle J Korshavn
- Department of Chemistry, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Hyun-Tak Kim
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Jaeheung Cho
- Department of Emerging Materials Science, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu, 42988, Republic of Korea
| | - Ayyalusamy Ramamoorthy
- Department of Chemistry, University of Michigan, Ann Arbor, MI, 48109, USA.,Biophysics, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Hyun-Woo Rhee
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Tae-Hyuk Kwon
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Mi Hee Lim
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
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91
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Montenegro J, Phipps RJ. Highlights from the 52nd EUCHEM conference on stereochemistry, Bürgenstock, Switzerland, May 2017. Chem Commun (Camb) 2017; 53:9960-9966. [DOI: 10.1039/c7cc90258a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The strong wind that was blowing in Brunnen on the 4th of May 2017 was prophetic of the storm of ideas and creativity that would later fall over the participants of the 52nd edition of the Bürgenstock conference.
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Affiliation(s)
- Javier Montenegro
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS) and Departamento de Química Orgánica
- Universidade de Santiago de Compostela
- 15782 Santiago de Compostela
- Spain
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