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Zhu M, Zeng L, Li Z, Wang C, Wu L, Jiang X. Revealing the Nanoarchitectonics of Amyloid β-Aggregation on Two-Dimensional Biomimetic Membranes by Surface-Enhanced Infrared Absorption Spectroscopy. ChemistryOpen 2023; 12:e202200253. [PMID: 36744594 PMCID: PMC9906390 DOI: 10.1002/open.202200253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 01/13/2023] [Indexed: 02/07/2023] Open
Abstract
The in vivo folding of amyloid β (Aβ) is influenced by many factors among which biomembrane interfaces play an important role. Here, using surface-enhanced infrared absorption (SEIRA) spectroscopy and atomic force microscopy (AFM), the adsorption, structure, and morphology of Aβ42 aggregating on different two-dimensional interfaces were investigated. Results show that interfaces facilitate the aggregation of Aβ42 and are conducive to the formation of homogeneous aggregates, while the aggregates vary on different interfaces. On hydrophobic interfaces, strong hydrophobic interactions with the C-terminus of Aβ42 result in the formation of small oligomers with a small proportion of the β-sheet structure. On hydrophilic interfaces, hydrogen-bonding interactions and electrostatic interactions promote the formation of large aggregate particles with β-sheet structure. The hydration repulsion plays an important role in the interaction of Aβ42 with interfaces. These findings help to understand the nature of Aβ42 adsorption and aggregation on the biomembrane interface and the origin of heterogeneity and polymorphism of Aβ42 aggregates.
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Affiliation(s)
- Manyu Zhu
- State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchunJilin130022P. R. China
- School of Applied Chemistry and EngineeringUniversity of Science & Technology of ChinaHefeiAnhui230026P. R. China
| | - Li Zeng
- State Key Laboratory of Environmental Chemistry and EcotoxicologyResearch Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing100085P. R. China
| | - Zihao Li
- State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchunJilin130022P. R. China
- School of Applied Chemistry and EngineeringUniversity of Science & Technology of ChinaHefeiAnhui230026P. R. China
| | - Chen Wang
- State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchunJilin130022P. R. China
- School of Applied Chemistry and EngineeringUniversity of Science & Technology of ChinaHefeiAnhui230026P. R. China
| | - Lie Wu
- State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchunJilin130022P. R. China
| | - Xiue Jiang
- State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchunJilin130022P. R. China
- School of Applied Chemistry and EngineeringUniversity of Science & Technology of ChinaHefeiAnhui230026P. R. China
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Gao G, Zhang T, Zhang W, Luo Z, Zhang Z, Gu Z, Yu L, Mu Q, Sun T. High efficiency and related mechanism of Au(RC) nanoclusters on disaggregating Aβ fibrils. J Colloid Interface Sci 2022; 621:67-76. [PMID: 35452930 DOI: 10.1016/j.jcis.2022.04.085] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 04/03/2022] [Accepted: 04/13/2022] [Indexed: 01/25/2023]
Abstract
Revealing the disaggregating mechanism of amyloids fibrils under nanomaterials action is a key issue for their successful future use in therapy of neurodegenerative and overall amyloid-related diseases. Herein a gold nanocluster stabilized by Arg-Cys dipeptide (Au(RC)NCs) was synthesized to investigate its disaggregation activity toward Aβ fibrils by using Thioflavin-T (ThT) fluorescence assay and atomic force microscopy. It was demonstrated that Au(RC)NCs is very effective in disaggregating preformed Aβ fibrils, and characterized by the ultra-low apparent completely disaggregation concentration at the dose of 10 μg·mL-1. A possible disaggregation mechanism based on Au(RC)NCs triggering the disassembly of Aβ fibrils into a dynamic equilibrium was proposed. The introduction of Au(RC)NCs with appropriate dose (5 μg·mL-1) can trigger the disassemble process of mature Aβ fibrils into a critical state, at this very moment, if there is no more nano-disassembler, destruction of old Aβ fibrils and formation of new Aβ fibrils are thus in permanent dynamic equilibrium; in contrast, if there is more nano-disassembler (>10 μg·mL-1), the dynamic equilibrium prefer to shift to the direction of Aβ further disassembly. Moreover, Au(RC)NCs with dosage over 10 μg·mL-1 exhibited superb protection effect against Aβ-induced cytotoxicity in cell experiments. This study not only proposed a possible disassembly mechanism of amyloids fibrils under nanomaterials action, but also provide Au(RC)NCs as a promising high-effective nano-disassembler to disassemble unwanted amyloid aggregates.
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Affiliation(s)
- Guanbin Gao
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, China.
| | - Ting Zhang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, China
| | - Wenkang Zhang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, China
| | - Zhuoying Luo
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, China
| | - Zijun Zhang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, China
| | - Zhenhua Gu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, China
| | - Liangchong Yu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, China
| | - Qinxue Mu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, China
| | - Taolei Sun
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, China; School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, China.
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Recent progress of vibrational spectroscopic study on the interfacial structure of biomimetic membranes. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 2021. [DOI: 10.1016/j.cjac.2021.06.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Tian M, Shen L. Self-Coiling of Single-Stranded Protofibrils into Rings: A Pathway of Alzheimer's β-Peptide Amyloidosis on Lipid Membranes. ACS Macro Lett 2020; 9:813-818. [PMID: 35648531 DOI: 10.1021/acsmacrolett.0c00262] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
An amyloidosis pathway of Alzheimer's β-peptide Aβ40 on lipid membranes, the self-coiling of single-stranded protofibrils into thermodynamically stable ring structures, is uncovered. Distinct from Aβ amyloid structures reported previously, the coiled rings observed here exhibit a narrow distribution of diameters centered at ∼170 nm and their circumference thicknesses increase as a longer single-stranded protofibril wraps around the ring, indicating the coaxial loop-by-loop winding of individual protofibrils. Such self-coiling is dominated by elastic properties of the flexible protofibrils subject to thermal fluctuations and surface interactions, as supported by an entropic elasticity model from polymer physics concepts. This work not only provides insights into the fundamental physics of Alzheimer's β-peptide amyloidosis but also is useful for designing amyloid filament materials.
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Affiliation(s)
- Mengting Tian
- School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, China
| | - Lei Shen
- School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, China
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Macroscopic Chiral Recognition by Calix[4]arene‐Based Host–Guest Interactions. Chemistry 2018; 24:15502-15506. [DOI: 10.1002/chem.201803564] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Revised: 07/30/2018] [Indexed: 01/12/2023]
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Li C, Qin R, Liu R, Miao S, Yang P. Functional amyloid materials at surfaces/interfaces. Biomater Sci 2018; 6:462-472. [PMID: 29435550 DOI: 10.1039/c7bm01124e] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
With the development of nanotechnology, functional amyloid materials are drawing increasing attention, and numerous remarkable applications are emerging. Amyloids, defined as a class of supramolecular assemblies of misfolded proteins or peptides into β-sheet fibrils, have evolved in many new respects and offer abundant chemical/biological functions. These proteinaceous micro/nano-structures provide excellent biocompatibility, rich phase behaviours, strong mechanical properties, and stability at interfaces not only in nature but also in functional materials, displaying versatile interactions with surfaces/interfaces that have been widely adopted in bioadhesion, synthetic biology, and composites. Overall, functional amyloids at surfaces/interfaces have excellent potential applications in next-generation biotechnology and biomaterials.
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Affiliation(s)
- Chen Li
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Xi'an 710119, China.
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Lin YC, Li C, Fakhraai Z. Kinetics of Surface-Mediated Fibrillization of Amyloid-β (12-28) Peptides. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:4665-4672. [PMID: 29584444 DOI: 10.1021/acs.langmuir.7b02744] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Surfaces or interfaces are considered to be key factors in facilitating the formation of amyloid fibrils under physiological conditions. In this report, we study the kinetics of the surface-mediated fibrillization (SMF) of an amyloid-β fragment (Aβ12-28) on mica. We employ a spin-coating-based drying procedure to control the exposure time of the substrate to a low-concentration peptide solution and then monitor the fibril growth as a function of time via atomic force microscopy (AFM). The evolution of surface-mediated fibril growth is quantitatively characterized in terms of the length histogram of imaged fibrils and their surface concentration. A two-dimensional (2D) kinetic model is proposed to numerically simulate the length evolution of surface-mediated fibrils by assuming a diffusion-limited aggregation (DLA) process along with size-dependent rate constants. We find that both monomer and fibril diffusion on the surface are required to obtain length histograms as a function of time that resemble those observed in experiments. The best-fit simulated data can accurately describe the key features of experimental length histograms and suggests that the mobility of loosely bound amyloid species is crucial in regulating the kinetics of SMF. We determine that the mobility exponent for the size dependence of the DLA rate constants is α = 0.55 ± 0.05, which suggests that the diffusion of loosely bound surface fibrils roughly depends on the inverse of the square root of their size. These studies elucidate the influence of deposition rate and surface diffusion on the formation of amyloid fibrils through SMF. The method used here can be broadly adopted to study the diffusion and aggregation of peptides or proteins on various surfaces to investigate the role of chemical interactions in two-dimensional fibril formation and diffusion.
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Affiliation(s)
- Yi-Chih Lin
- Department of Chemistry , University of Pennsylvania , 231 South 34th Street , Philadelphia , Pennsylvania 19104-6323 , United States
| | - Chen Li
- Department of Chemistry , University of Pennsylvania , 231 South 34th Street , Philadelphia , Pennsylvania 19104-6323 , United States
| | - Zahra Fakhraai
- Department of Chemistry , University of Pennsylvania , 231 South 34th Street , Philadelphia , Pennsylvania 19104-6323 , United States
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Bonhommeau S, Lecomte S. Tip-Enhanced Raman Spectroscopy: A Tool for Nanoscale Chemical and Structural Characterization of Biomolecules. Chemphyschem 2017; 19:8-18. [DOI: 10.1002/cphc.201701067] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2017] [Revised: 11/04/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Sébastien Bonhommeau
- University of Bordeaux; Institut des Sciences Moléculaires; CNRS UMR 5255; 351 cours de la Libération 33405 Talence cedex France
| | - Sophie Lecomte
- University of Bordeaux; Institut de Chimie et Biologie des Membranes et des Nano-objets; CNRS UMR 5248; Allée Geoffroy Saint Hilaire 33600 Pessac France
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Lin YC, Repollet-Pedrosa MH, Ferrie JJ, Petersson EJ, Fakhraai Z. Potential Artifacts in Sample Preparation Methods Used for Imaging Amyloid Oligomers and Protofibrils due to Surface-Mediated Fibril Formation. J Phys Chem B 2017; 121:2534-2542. [PMID: 28266853 DOI: 10.1021/acs.jpcb.6b12560] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Accurate imaging of nanometer-sized structures and morphologies is essential to characterizing amyloid species formed at various stages of amyloid aggregation. In this article, we examine the effect of different drying procedures on the final morphology of surface-mediated fibrils formed during the incubation period, which may then be mistaken as oligomers or protofibrils intentionally formed in solution for a particular study. Atomic force microscopy results show that some artifacts, such as globules, flakelike structures, and even micrometer-long fibrils, can be produced under various drying conditions. We also demonstrate that one can prevent drying artifacts by using an appropriate spin-coating procedure to dry amyloid samples. This procedure can bypass the wetting/dewetting transition of the liquid layer during the drying process and preserve the structure of interest on the substrate without generating drying artifacts.
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Affiliation(s)
- Yi-Chih Lin
- Department of Chemistry, University of Pennsylvania , 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323, United States
| | - Milton H Repollet-Pedrosa
- Department of Chemistry, University of Wisconsin at Madison , 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - John J Ferrie
- Department of Chemistry, University of Pennsylvania , 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323, United States
| | - E James Petersson
- Department of Chemistry, University of Pennsylvania , 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323, United States
| | - Zahra Fakhraai
- Department of Chemistry, University of Pennsylvania , 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323, United States
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