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Thurber KR, Yau WM, Tycko R. Structure of Amyloid Peptide Ribbons Characterized by Electron Microscopy, Atomic Force Microscopy, and Solid-State Nuclear Magnetic Resonance. J Phys Chem B 2024; 128:1711-1723. [PMID: 38348474 DOI: 10.1021/acs.jpcb.3c07867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2024]
Abstract
Polypeptides often self-assemble to form amyloid fibrils, which contain cross-β structural motifs and are typically 5-15 nm in width and micrometers in length. In many cases, short segments of longer amyloid-forming protein or peptide sequences also form cross-β assemblies but with distinctive ribbon-like morphologies that are characterized by a well-defined thickness (on the order of 5 nm) in one lateral dimension and a variable width (typically 10-100 nm) in the other. Here, we use a novel combination of data from solid-state nuclear magnetic resonance (ssNMR), dark-field transmission electron microscopy (TEM), atomic force microscopy (AFM), and cryogenic electron microscopy (cryoEM) to investigate the structures within amyloid ribbons formed by residues 14-23 and residues 11-25 of the Alzheimer's disease-associated amyloid-β peptide (Aβ14-23 and Aβ11-25). The ssNMR data indicate antiparallel β-sheets with specific registries of intermolecular hydrogen bonds. Mass-per-area values are derived from dark-field TEM data. The ribbon thickness is determined from AFM images. For Aβ14-23 ribbons, averaged cryoEM images show a periodic spacing of β-sheets. The combined data support structures in which the amyloid ribbon growth direction is the direction of intermolecular hydrogen bonds between β-strands, the ribbon thickness corresponds to the width of one β-sheet (i.e., approximately the length of one molecule), and the variable ribbon width is a variable multiple of the thickness of one β-sheet (i.e., a multiple of the repeat distance in a stack of β-sheets). This architecture for a cross-β assembly may generally exist within amyloid ribbons.
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Affiliation(s)
- Kent R Thurber
- Laboratory of Chemical Physics, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland 20892-0520, United States
| | - Wai-Ming Yau
- Laboratory of Chemical Physics, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland 20892-0520, United States
| | - Robert Tycko
- Laboratory of Chemical Physics, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland 20892-0520, United States
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Umesh, Ralhan J, Kumar V, Bhatt H, Nath D, Mavlankar NA, Ghosh HN, Pal A. Thermo-Chemical Cues-Mediated Strategy to Control Peptide Self-Assembly and Charge Transfer Complexation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:2754-2763. [PMID: 38275136 DOI: 10.1021/acs.langmuir.3c03426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2024]
Abstract
Peptide amphiphiles (PAs) are known for their remarkable ability to undergo molecular self-assembly, a process that is highly responsive to the local microenvironment. Herein, we design a pyrene tethered peptide amphiphile Py-VFFAKK, 1 that exhibits pathway-driven self-assembly from metastable nanoparticles to kinetically controlled nanofibers and thermodynamically stable twisted bundles upon modulations in pH, temperature, and chemical cues. The presence of the pyrene moiety ensures donation of the electron to an electron acceptor, namely, 7,7,8,8-tetracyanoquinodimethane (TCNQ), to form a supramolecular charge transfer complex in aqueous solution that was studied in detail with microscopic and spectroscopic techniques. Excitation of the donor species in its excimer state facilitates electron donation to the acceptor moiety, paving away a long-lived charge-separated state that persists for over a nanosecond, as ascertained through transient absorption spectroscopy. Finally, the self-assembled charge transfer complex is explored toward antimicrobial properties with Escherichia coli while maintaining biocompatibility toward L929 mice fibroblast cells.
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Affiliation(s)
- Umesh
- Institute of Nano Science and Technology, Knowledge City, Sector-81, Mohali 140306, Punjab, India
| | - Jahanvi Ralhan
- Institute of Nano Science and Technology, Knowledge City, Sector-81, Mohali 140306, Punjab, India
| | - Vikas Kumar
- Institute of Nano Science and Technology, Knowledge City, Sector-81, Mohali 140306, Punjab, India
| | - Himanshu Bhatt
- Institute of Nano Science and Technology, Knowledge City, Sector-81, Mohali 140306, Punjab, India
| | - Debasish Nath
- Institute of Nano Science and Technology, Knowledge City, Sector-81, Mohali 140306, Punjab, India
| | - Nimisha A Mavlankar
- Institute of Nano Science and Technology, Knowledge City, Sector-81, Mohali 140306, Punjab, India
| | - Hirendra N Ghosh
- School of Chemical Sciences, National Institute of Science Education and Research, Bhubaneswar, Odisha 752050, India
| | - Asish Pal
- Institute of Nano Science and Technology, Knowledge City, Sector-81, Mohali 140306, Punjab, India
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Tian Y, Li J, Wang A, Li Q, Jian H, Bai S. Peptide-Based Optical/Electronic Materials: Assembly and Recent Applications in Biomedicine, Sensing, and Energy Storage. Macromol Biosci 2023; 23:e2300171. [PMID: 37466295 DOI: 10.1002/mabi.202300171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 07/10/2023] [Accepted: 07/16/2023] [Indexed: 07/20/2023]
Abstract
The unique optical and electronic properties of living systems are impressive. Peptide-based supramolecular self-assembly systems attempt to mimic these properties by preparation optical/electronic function materials with specific structure through simple building blocks, rational molecular design, and specific kinetic stimulation. From the perspective of building blocks and assembly strategies, the unique optical and electronic properties of peptide-based nanostructures, including peptides self-assembly and peptides regulate the assembly of external function subunits, are systematically reviewed. Additionally, their applications in biomedicine, sensing, and energy storage are also highlighted. This bioinspired peptide-based function material is one of the hot candidates for the new generation of green intellect materials, with many advantages such as biocompatibility, environmental friendliness, and adjustable morphology.
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Affiliation(s)
- Yajie Tian
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Jieling Li
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Anhe Wang
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Qi Li
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Honglei Jian
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Shuo Bai
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, P. R. China
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Bricha S, Côté-Cyr M, Tremblay T, Nguyen PT, St-Louis P, Giguère D, Archambault D, Bourgault S. Synthetic Multicomponent Nanovaccines Based on the Molecular Co-assembly of β-Peptides Protect against Influenza A Virus. ACS Infect Dis 2023; 9:1232-1244. [PMID: 37200051 DOI: 10.1021/acsinfecdis.2c00610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Peptides with the ability to self-assemble into nanoparticles have emerged as an attractive strategy to design antigen delivery platforms for subunit vaccines. While toll-like receptor (TLR) agonists are promising immunostimulants, their use as soluble agents is limited by their rapid clearance and off-target inflammation. Herein, we harnessed molecular co-assembly to prepare multicomponent cross-β-sheet peptide nanofilaments exposing an antigenic epitope derived from the influenza A virus and a TLR agonist. The TLR7 agonist imiquimod and the TLR9 agonist CpG were respectively functionalized on the assemblies by means of an orthogonal pre- or post-assembly conjugation strategy. The nanofilaments were readily uptaken by dendritic cells, and the TLR agonists retained their activity. Multicomponent nanovaccines induced a robust epitope-specific immune response and completely protected immunized mice from a lethal influenza A virus inoculation. This versatile bottom-up approach is promising for the preparation of synthetic vaccines with customized magnitude and polarization of the immune responses.
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Affiliation(s)
- Salma Bricha
- Department of Chemistry, Université du Québec à Montréal, C.P.8888, Succursale Centre-Ville, Montréal H3C 3P8, Canada
- Department of Biological Sciences, Université du Québec à Montréal, C.P.8888, Succursale Centre-Ville, Montréal H3C 3P8, Canada
- Quebec Network for Research on Protein Function, Engineering and Applications (PROTEO), Québec H3C 3P8, Canada
- The Swine and Poultry Infectious Diseases Research Centre (CRIPA), Saint-Hyacinthe J2S 2M2, Canada
- The Center of Excellence in Research on Orphan Diseases─Fondation Courtois (CERMO-FC), Montréal H3C 3P8, Canada
| | - Mélanie Côté-Cyr
- Department of Chemistry, Université du Québec à Montréal, C.P.8888, Succursale Centre-Ville, Montréal H3C 3P8, Canada
- Quebec Network for Research on Protein Function, Engineering and Applications (PROTEO), Québec H3C 3P8, Canada
- The Swine and Poultry Infectious Diseases Research Centre (CRIPA), Saint-Hyacinthe J2S 2M2, Canada
- The Center of Excellence in Research on Orphan Diseases─Fondation Courtois (CERMO-FC), Montréal H3C 3P8, Canada
| | - Thomas Tremblay
- Quebec Network for Research on Protein Function, Engineering and Applications (PROTEO), Québec H3C 3P8, Canada
- Department of Chemistry, Université Laval, 1045 Av. De la Médecine, Québec City QC G1V 0A6, Canada
| | - Phuong Trang Nguyen
- Department of Chemistry, Université du Québec à Montréal, C.P.8888, Succursale Centre-Ville, Montréal H3C 3P8, Canada
- Quebec Network for Research on Protein Function, Engineering and Applications (PROTEO), Québec H3C 3P8, Canada
- The Swine and Poultry Infectious Diseases Research Centre (CRIPA), Saint-Hyacinthe J2S 2M2, Canada
- The Center of Excellence in Research on Orphan Diseases─Fondation Courtois (CERMO-FC), Montréal H3C 3P8, Canada
| | - Philippe St-Louis
- Department of Biological Sciences, Université du Québec à Montréal, C.P.8888, Succursale Centre-Ville, Montréal H3C 3P8, Canada
- The Swine and Poultry Infectious Diseases Research Centre (CRIPA), Saint-Hyacinthe J2S 2M2, Canada
- The Center of Excellence in Research on Orphan Diseases─Fondation Courtois (CERMO-FC), Montréal H3C 3P8, Canada
| | - Denis Giguère
- Quebec Network for Research on Protein Function, Engineering and Applications (PROTEO), Québec H3C 3P8, Canada
- Department of Chemistry, Université Laval, 1045 Av. De la Médecine, Québec City QC G1V 0A6, Canada
| | - Denis Archambault
- Department of Biological Sciences, Université du Québec à Montréal, C.P.8888, Succursale Centre-Ville, Montréal H3C 3P8, Canada
- The Swine and Poultry Infectious Diseases Research Centre (CRIPA), Saint-Hyacinthe J2S 2M2, Canada
- The Center of Excellence in Research on Orphan Diseases─Fondation Courtois (CERMO-FC), Montréal H3C 3P8, Canada
| | - Steve Bourgault
- Department of Chemistry, Université du Québec à Montréal, C.P.8888, Succursale Centre-Ville, Montréal H3C 3P8, Canada
- Quebec Network for Research on Protein Function, Engineering and Applications (PROTEO), Québec H3C 3P8, Canada
- The Swine and Poultry Infectious Diseases Research Centre (CRIPA), Saint-Hyacinthe J2S 2M2, Canada
- The Center of Excellence in Research on Orphan Diseases─Fondation Courtois (CERMO-FC), Montréal H3C 3P8, Canada
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