51
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Malaspina T, Fileti EE, Colherinhas G. Elucidating the stability of bolaamphiphilic polypeptide nanosheets using atomistic molecular dynamics. Phys Chem Chem Phys 2017; 19:31921-31928. [DOI: 10.1039/c7cp06284b] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Atomistic molecular dynamics was employed to characterize bolaamphiphilic polypeptides nanosheets.
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Affiliation(s)
- T. Malaspina
- Instituto de Ciência e Tecnologia
- Universidade Federal de São Paulo
- São José dos Campos
- Brazil
| | - E. E. Fileti
- Instituto de Ciência e Tecnologia
- Universidade Federal de São Paulo
- São José dos Campos
- Brazil
| | - G. Colherinhas
- Departamento de Física
- CEPAE
- Universidade Federal de Goiás
- Goiânia
- Brazil
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52
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Magnotti EL, Hughes SA, Dillard RS, Wang S, Hough L, Karumbamkandathil A, Lian T, Wall JS, Zuo X, Wright ER, Conticello VP. Self-Assembly of an α-Helical Peptide into a Crystalline Two-Dimensional Nanoporous Framework. J Am Chem Soc 2016; 138:16274-16282. [PMID: 27936625 PMCID: PMC5739522 DOI: 10.1021/jacs.6b06592] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Sequence-specific peptides have been demonstrated to self-assemble into structurally defined nanoscale objects including nanofibers, nanotubes, and nanosheets. The latter structures display significant promise for the construction of hybrid materials for functional devices due to their extended planar geometry. Realization of this objective necessitates the ability to control the structural features of the resultant assemblies through the peptide sequence. The design of a amphiphilic peptide, 3FD-IL, is described that comprises two repeats of a canonical 18 amino acid sequence associated with straight α-helical structures. Peptide 3FD-IL displays 3-fold screw symmetry in a helical conformation and self-assembles into nanosheets based on hexagonal packing of helices. Biophysical evidence from TEM, cryo-TEM, SAXS, AFM, and STEM measurements on the 3FD-IL nanosheets support a structural model based on a honeycomb lattice, in which the length of the peptide determines the thickness of the nanosheet and the packing of helices defines the presence of nanoscale channels that permeate the sheet. The honeycomb structure can be rationalized on the basis of geometrical packing frustration in which the channels occupy defect sites that define a periodic superlattice. The resultant 2D materials may have potential as materials for nanoscale transport and controlled release applications.
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Affiliation(s)
| | - Spencer A. Hughes
- Department of Chemistry, Emory University, Atlanta, Georgia 30322, United States
| | - Rebecca S. Dillard
- Department of Pediatrics, Emory University School of Medicine, Children’s Healthcare of Atlanta, Atlanta, Georgia 30322, United States
| | - Shengyuan Wang
- Department of Chemistry, Emory University, Atlanta, Georgia 30322, United States
| | - Lillian Hough
- Department of Chemistry, Emory University, Atlanta, Georgia 30322, United States
| | | | - Tianquan Lian
- Department of Chemistry, Emory University, Atlanta, Georgia 30322, United States
| | - Joseph S. Wall
- Brookhaven National Laboratory, P.O. Box 5000, Upton, New York 11973, United States
| | - Xiaobing Zuo
- X-ray Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439, United States
| | - Elizabeth R. Wright
- Department of Pediatrics, Emory University School of Medicine, Children’s Healthcare of Atlanta, Atlanta, Georgia 30322, United States
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53
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Hamley IW, Hutchinson J, Kirkham S, Castelletto V, Kaur A, Reza M, Ruokolainen J. Nanosheet Formation by an Anionic Surfactant-like Peptide and Modulation of Self-Assembly through Ionic Complexation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:10387-10393. [PMID: 27636825 DOI: 10.1021/acs.langmuir.6b02180] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The surfactant-like peptide (Ala)6-(Asp) (A6D) is shown to self-assemble into ultrathin (3 nm thick) nanosheets in aqueous solution above a critical aggregation concentration. A combination of circular dichroism and FTIR spectroscopy and X-ray diffraction shows that the nanosheets comprise interdigitated bilayers of the peptide with β-sheet conformation. The self-assembly can be modulated by addition of hexamethylenediamine which is expected to interact with the anionic C terminus (and C-terminal D residue) of the peptide. Multiple ordered nanostructures can be accessed depending on the amount of added diamine. Nanosheet and bicontinuous network structures were observed using cryogenic-TEM and small-angle X-ray scattering. Addition of hexamethylenediamine at a sufficiently large molar ratio leads to disruption of the ordered nanostructure and the formation of a solution of A6D-diamine molecular complexes with highly charged end groups. The multiple acid-functionalized nanostructures that are accessible in this system are expected to have many applications in the fabrication of new nanomaterials.
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Affiliation(s)
- Ian W Hamley
- Department of Chemistry, University of Reading, Whiteknights , Reading RG6 6AD, U.K
| | - Jessica Hutchinson
- Department of Chemistry, University of Reading, Whiteknights , Reading RG6 6AD, U.K
| | - Steven Kirkham
- Department of Chemistry, University of Reading, Whiteknights , Reading RG6 6AD, U.K
| | - Valeria Castelletto
- Department of Chemistry, University of Reading, Whiteknights , Reading RG6 6AD, U.K
| | - Amanpreet Kaur
- Department of Chemistry, University of Reading, Whiteknights , Reading RG6 6AD, U.K
| | - Mehedi Reza
- Department of Applied Physics, Aalto University School of Science , P. O. Box 15100, FI-00076 Aalto, Finland
| | - Janne Ruokolainen
- Department of Applied Physics, Aalto University School of Science , P. O. Box 15100, FI-00076 Aalto, Finland
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54
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Kirkham S, Castelletto V, Hamley IW, Reza M, Ruokolainen J, Hermida-Merino D, Bilalis P, Iatrou H. Self-Assembly of Telechelic Tyrosine End-Capped PEO and Poly(alanine) Polymers in Aqueous Solution. Biomacromolecules 2016; 17:1186-97. [DOI: 10.1021/acs.biomac.6b00023] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Steven Kirkham
- School
of Chemistry, Pharmacy and Food Biosciences, University of Reading, Whiteknights, Reading RG6 6AD, United Kingdom
| | - Valeria Castelletto
- School
of Chemistry, Pharmacy and Food Biosciences, University of Reading, Whiteknights, Reading RG6 6AD, United Kingdom
| | - Ian William Hamley
- School
of Chemistry, Pharmacy and Food Biosciences, University of Reading, Whiteknights, Reading RG6 6AD, United Kingdom
| | - Mehedi Reza
- Department
of Applied Physics, Aalto University School of Science, P.O. Box 15100 FI-00076 Aalto, Finland
| | - Janne Ruokolainen
- Department
of Applied Physics, Aalto University School of Science, P.O. Box 15100 FI-00076 Aalto, Finland
| | | | - Panayiotis Bilalis
- University of Athens, Department of Chemistry, Panepistimiopolis Zografou, 157 71 Athens, Greece
| | - Hermis Iatrou
- University of Athens, Department of Chemistry, Panepistimiopolis Zografou, 157 71 Athens, Greece
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55
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Kirkham S, Hamley IW, Smith AM, Gouveia RM, Connon CJ, Reza M, Ruokolainen J. A self-assembling fluorescent dipeptide conjugate for cell labelling. Colloids Surf B Biointerfaces 2016; 137:104-8. [DOI: 10.1016/j.colsurfb.2015.04.062] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2015] [Revised: 04/27/2015] [Accepted: 04/28/2015] [Indexed: 10/23/2022]
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Two-Dimensional Peptide and Protein Assemblies. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2016; 940:29-60. [PMID: 27677508 DOI: 10.1007/978-3-319-39196-0_3] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Two-dimensional nanoscale assemblies (nanosheets) represent a promising structural platform to arrange molecular and supramolecular substrates with precision for integration into devices. This nanoarchitectonic approach has gained significant traction over the last decade, as a general concept to guide the fabrication of functional nanoscale devices. Sequence-specific biomolecules, e.g., peptides and proteins, may be considered excellent substrates for the fabrication of two-dimensional nanoarchitectonics. Molecular level instructions can be encoded within the sequence of monomers, which allows for control over supramolecular structure if suitable design principles could be elaborated. Due to the complexity of interactions between protomers, the development of principles aimed toward rational design of peptide and protein nanosheets is at a nascent stage. This review discusses the known two-dimensional peptide and protein assemblies to further our understanding of how to control the arrangement of molecules in two-dimensions.
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57
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Adamcik J, Sánchez-Ferrer A, Ait-Bouziad N, Reynolds NP, Lashuel HA, Mezzenga R. Microtubule-Binding R3 Fragment from Tau Self-Assembles into Giant Multistranded Amyloid Ribbons. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201508968] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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58
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Adamcik J, Sánchez-Ferrer A, Ait-Bouziad N, Reynolds NP, Lashuel HA, Mezzenga R. Microtubule-Binding R3 Fragment from Tau Self-Assembles into Giant Multistranded Amyloid Ribbons. Angew Chem Int Ed Engl 2015; 55:618-22. [DOI: 10.1002/anie.201508968] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2015] [Revised: 11/07/2015] [Indexed: 11/06/2022]
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59
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da Silva ER, Walter MNM, Reza M, Castelletto V, Ruokolainen J, Connon CJ, Alves WA, Hamley IW. Self-Assembled Arginine-Capped Peptide Bolaamphiphile Nanosheets for Cell Culture and Controlled Wettability Surfaces. Biomacromolecules 2015; 16:3180-90. [DOI: 10.1021/acs.biomac.5b00820] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Emerson Rodrigo da Silva
- Centro
de Ciências Naturais e Humanas, Universidade Federal do ABC, Santo André 09210-580, Brazil
- Department
of Chemistry, University of Reading, Whiteknights, Reading RG6 6AD, United Kingdom
| | - Merlin Nathaniel Mark Walter
- Institute
of Genetic Medicine, Newcastle University, International Centre for Life, Central Parkway, Newcastle upon Tyne NE1 3BZ, United Kingdom
| | - Mehedi Reza
- Department
of Applied Physics, Aalto University School of Science, P.O. Box 15100, FI-00076 Aalto, Finland
| | - Valeria Castelletto
- Department
of Chemistry, University of Reading, Whiteknights, Reading RG6 6AD, United Kingdom
| | - Janne Ruokolainen
- Department
of Applied Physics, Aalto University School of Science, P.O. Box 15100, FI-00076 Aalto, Finland
| | - Che John Connon
- Institute
of Genetic Medicine, Newcastle University, International Centre for Life, Central Parkway, Newcastle upon Tyne NE1 3BZ, United Kingdom
| | - Wendel Andrade Alves
- Centro
de Ciências Naturais e Humanas, Universidade Federal do ABC, Santo André 09210-580, Brazil
| | - Ian William Hamley
- Department
of Chemistry, University of Reading, Whiteknights, Reading RG6 6AD, United Kingdom
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60
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Jiang T, Vail OA, Jiang Z, Zuo X, Conticello VP. Rational Design of Multilayer Collagen Nanosheets with Compositional and Structural Control. J Am Chem Soc 2015; 137:7793-802. [DOI: 10.1021/jacs.5b03326] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tao Jiang
- Department
of Chemistry, Emory University, Atlanta, Georgia 30322, United States
| | - Owen A. Vail
- School
of Physics, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Zhigang Jiang
- School
of Physics, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Xiaobing Zuo
- X-ray
Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439, United States
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61
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Pellach M, Atsmon-Raz Y, Simonovsky E, Gottlieb H, Jacoby G, Beck R, Adler-Abramovich L, Miller Y, Gazit E. Spontaneous structural transition in phospholipid-inspired aromatic phosphopeptide nanostructures. ACS NANO 2015; 9:4085-4095. [PMID: 25802000 DOI: 10.1021/acsnano.5b00133] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Phospholipid membranes could be considered a prime example of the ability of nature to produce complex yet ordered structures, by spontaneous and efficient self-assembly. Inspired by the unique properties and architecture of phospholipids, we designed simple amphiphilic decapeptides, intended to fold in the center of the peptide sequence, with a phosphorylated serine "head" located within a central turn segment, and two hydrophobic "tails". The molecular design also included the integration of the diphenylalanine motif, previously shown to facilitate self-assembly and increase nanostructure stability. Secondary structure analysis of the peptides indeed indicated the presence of stabilized conformations in solution, with a central turn connecting two hydrophobic "tails", and interactions between the hydrophobic strands. The mechanisms of assembly into supramolecular structures involved structural transitions between different morphologies, which occurred over several hours, leading to the formation of distinctive nanostructures, including half-elliptical nanosheets and curved tapes. The phosphopeptide building blocks appear to self-assemble via a particular combination of aromatic, hydrophobic and ionic interactions, as well as hydrogen bonding, as demonstrated by proposed constructed simulated models of the peptides and self-assembled nanostructures. Molecular dynamics simulations also gave insight into mechanisms of structural transitions of the nanostructures at a molecular level. Because of the biocompatibility of peptides, the phosphopeptide assemblies allow for expansion of the library of biomolecular nanostructures available for future design and application of biomedical devices.
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Affiliation(s)
- Michal Pellach
- †Department of Molecular Microbiology and Biotechnology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv 69978, Israel
| | - Yoav Atsmon-Raz
- ‡Department of Chemistry, Ben-Gurion University of the Negev, Be'er Sheva 84105, Israel
- §Ilse Katz Institute for Nanoscale Science and Technology, Ben-Gurion University of the Negev, Be'er Sheva 84105, Israel
| | - Eyal Simonovsky
- ‡Department of Chemistry, Ben-Gurion University of the Negev, Be'er Sheva 84105, Israel
- §Ilse Katz Institute for Nanoscale Science and Technology, Ben-Gurion University of the Negev, Be'er Sheva 84105, Israel
| | - Hugo Gottlieb
- ⊥Department of Chemistry, Bar-Ilan University, Ramat Gan 52900, Israel
| | - Guy Jacoby
- ∥The Raymond and Beverly Sackler School of Physics and Astronomy, Tel-Aviv University, Tel-Aviv 69978, Israel
| | - Roy Beck
- ∥The Raymond and Beverly Sackler School of Physics and Astronomy, Tel-Aviv University, Tel-Aviv 69978, Israel
| | - Lihi Adler-Abramovich
- †Department of Molecular Microbiology and Biotechnology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv 69978, Israel
| | - Yifat Miller
- ‡Department of Chemistry, Ben-Gurion University of the Negev, Be'er Sheva 84105, Israel
- §Ilse Katz Institute for Nanoscale Science and Technology, Ben-Gurion University of the Negev, Be'er Sheva 84105, Israel
| | - Ehud Gazit
- †Department of Molecular Microbiology and Biotechnology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv 69978, Israel
- #Department of Materials Science and Engineering Iby and Aladar Fleischman Faculty of Engineering, Tel Aviv University, Tel Aviv 69978, Israel
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62
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63
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Hamley IW, Kirkham S, Dehsorkhi A, Castelletto V, Adamcik J, Mezzenga R, Ruokolainen J, Mazzuca C, Gatto E, Venanzi M, Placidi E, Bilalis P, Iatrou H. Self-Assembly of a Model Peptide Incorporating a Hexa-Histidine Sequence Attached to an Oligo-Alanine Sequence, and Binding to Gold NTA/Nickel Nanoparticles. Biomacromolecules 2014; 15:3412-20. [DOI: 10.1021/bm500950c] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Ian W. Hamley
- Department of Chemistry, University of Reading, Whiteknights, Reading RG6 6AD, United Kingdom
| | - Steven Kirkham
- Department of Chemistry, University of Reading, Whiteknights, Reading RG6 6AD, United Kingdom
| | - Ashkan Dehsorkhi
- Department of Chemistry, University of Reading, Whiteknights, Reading RG6 6AD, United Kingdom
| | - Valeria Castelletto
- Department of Chemistry, University of Reading, Whiteknights, Reading RG6 6AD, United Kingdom
| | - Jozef Adamcik
- Food and Soft Materials Science, ETH Zürich, Schmelzbergstrasse 9, 8092 Zürich, Switzerland
| | - Raffaele Mezzenga
- Food and Soft Materials Science, ETH Zürich, Schmelzbergstrasse 9, 8092 Zürich, Switzerland
| | - Janne Ruokolainen
- Department
of Applied Physics, Aalto University School of Science, P.O. Box 15100, FI-00076 Aalto, Finland
| | - Claudia Mazzuca
- Department of Chemical Sciences
and Technologies, University of Rome “Tor Vergata”, Via
Ricerca Scientifica 1, 00133 Rome, Italy
| | - Emanuela Gatto
- Department of Chemical Sciences
and Technologies, University of Rome “Tor Vergata”, Via
Ricerca Scientifica 1, 00133 Rome, Italy
| | - Mariano Venanzi
- Department of Chemical Sciences
and Technologies, University of Rome “Tor Vergata”, Via
Ricerca Scientifica 1, 00133 Rome, Italy
| | - Ernesto Placidi
- Institute of Structure of
Matter, CNR, Department of Physics, University of Rome “Tor Vergata”, 00133 Rome, Italy
| | - Panayiotis Bilalis
- University of Athens, Department of Chemistry, Panepistimiopolis Zografou, 157 71 Athens, Greece
| | - Hermis Iatrou
- University of Athens, Department of Chemistry, Panepistimiopolis Zografou, 157 71 Athens, Greece
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64
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Eakins GL, Gallaher JK, Keyzers RA, Falber A, Webb JEA, Laos A, Tidhar Y, Weissman H, Rybtchinski B, Thordarson P, Hodgkiss JM. Thermodynamic factors impacting the peptide-driven self-assembly of perylene diimide nanofibers. J Phys Chem B 2014; 118:8642-51. [PMID: 24950450 DOI: 10.1021/jp504564s] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Synthetic peptides offer enormous potential to encode the assembly of molecular electronic components, provided that the complex range of interactions is distilled into simple design rules. Here, we report a spectroscopic investigation of aggregation in an extensive series of peptide-perylene diiimide conjugates designed to interrogate the effect of structural variations. By fitting different contributions to temperature dependent optical absorption spectra, we quantify both the thermodynamics and the nature of aggregation for peptides by incrementally varying hydrophobicity, charge density, length, as well as asymmetric substitution with a hexyl chain, and stereocenter inversion. We find that coarse effects like hydrophobicity and hexyl substitution have the greatest impact on aggregation thermodynamics, which are separated into enthalpic and entropic contributions. Moreover, significant peptide packing effects are resolved via stereocenter inversion studies, particularly when examining the nature of aggregates formed and the coupling between π electronic orbitals. Our results develop a quantitative framework for establishing structure-function relationships that will underpin the design of self-assembling peptide electronic materials.
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Affiliation(s)
- Galen L Eakins
- MacDiarmid Institute for Advanced Materials and Nanotechnology, ‡School of Chemical and Physical Sciences, Victoria University of Wellington , P.O. Box 600, Wellington 6012, New Zealand
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65
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Dehsorkhi A, Castelletto V, Hamley IW. Self-assembling amphiphilic peptides. J Pept Sci 2014; 20:453-67. [PMID: 24729276 PMCID: PMC4237179 DOI: 10.1002/psc.2633] [Citation(s) in RCA: 272] [Impact Index Per Article: 27.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2014] [Revised: 02/27/2014] [Accepted: 03/04/2014] [Indexed: 01/08/2023]
Abstract
The self-assembly of several classes of amphiphilic peptides is reviewed, and selected applications are discussed. We discuss recent work on the self-assembly of lipopeptides, surfactant-like peptides and amyloid peptides derived from the amyloid-β peptide. The influence of environmental variables such as pH and temperature on aggregate nanostructure is discussed. Enzyme-induced remodelling due to peptide cleavage and nanostructure control through photocleavage or photo-cross-linking are also considered. Lastly, selected applications of amphiphilic peptides in biomedicine and materials science are outlined.
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Affiliation(s)
- Ashkan Dehsorkhi
- Department of Chemistry, University of ReadingWhiteknights, Reading, RG6 6AD, UK
| | - Valeria Castelletto
- Department of Chemistry, University of ReadingWhiteknights, Reading, RG6 6AD, UK
| | - Ian W Hamley
- Department of Chemistry, University of ReadingWhiteknights, Reading, RG6 6AD, UK
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66
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67
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Abstract
The self-assembly of different classes of peptide, including cyclic peptides, amyloid peptides and surfactant-like peptides into nanotube structures is reviewed. The modes of self-assembly are discussed. Additionally, applications in bionanotechnology and synthetic materials science are summarized.
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Affiliation(s)
- Ian W Hamley
- Department of Chemistry, University of Reading, Whiteknights, Reading, RG6 6AD (UK).
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68
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Jiang T, Xu C, Liu Y, Liu Z, Wall JS, Zuo X, Lian T, Salaita K, Ni C, Pochan D, Conticello VP. Structurally defined nanoscale sheets from self-assembly of collagen-mimetic peptides. J Am Chem Soc 2014; 136:4300-8. [PMID: 24571053 DOI: 10.1021/ja412867z] [Citation(s) in RCA: 107] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
We report the design of two collagen-mimetic peptide sequences, NSI and NSII, that self-assemble into structurally defined nanoscale sheets. The underlying structure of these nanosheets can be understood in terms of the layered packing of collagen triple helices in two dimensions. These nanosheet assemblies represent a novel morphology for collagen-based materials, which, on the basis of their defined structure, may be envisioned as potentially biocompatible platforms for controlled presentation of chemical functionality at the nanoscale. The molecularly programmed self-assembly of peptides NSI and NSII into nanosheets suggests that sequence-specific macromolecules offer significant promise as design elements for two-dimensional (2D) assemblies. This investigation provides a design rubric for fabrication of structurally defined, peptide-based nanosheets using the principles of solution-based self-assembly facilitated through complementary electrostatic interactions.
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Affiliation(s)
- Tao Jiang
- Department of Chemistry, Emory University , Atlanta, Georgia 30322
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69
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Castelletto V, Hamley IW, Segarra-Maset MD, Gumbau CB, Miravet JF, Escuder B, Seitsonen J, Ruokolainen J. Tuning chelation by the surfactant-like peptide A6H using predetermined pH values. Biomacromolecules 2014; 15:591-8. [PMID: 24369761 PMCID: PMC3922418 DOI: 10.1021/bm401640j] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2013] [Revised: 12/21/2013] [Indexed: 12/17/2022]
Abstract
We examine the self-assembly of a peptide A6H comprising a hexa-alanine sequence A6 with a histidine (H) "head group", which chelates Zn(2+) cations. We study the self-assembly of A6H and binding of Zn(2+) ions in ZnCl2 solutions, under acidic and neutral conditions. A6H self-assembles into nanotapes held together by a β-sheet structure in acidic aqueous solutions. By dissolving A6H in acidic ZnCl2 solutions, the carbonyl oxygen atoms in A6H chelate the Zn(2+) ions and allow for β-sheet formation at lower concentrations, consequently reducing the onset concentration for nanotape formation. A6H mixed with water or ZnCl2 solutions under neutral conditions produces short sheets or pseudocrystalline tapes, respectively. The imidazole ring of A6H chelates Zn(2+) ions in neutral solutions. The internal structure of nanosheets and pseudocrystalline sheets in neutral solutions is similar to the internal structure of A6H nanotapes in acidic solutions. Our results show that it is possible to induce dramatic changes in the self-assembly and chelation sites of A6H by changing the pH of the solution. However, it is likely that the amphiphilic nature of A6H determines the internal structure of the self-assembled aggregates independent from changes in chelation.
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Affiliation(s)
- V Castelletto
- School of Chemistry, Food Science and Pharmacy, University of Reading , Whiteknights, Reading RG6 6AD, United Kingdom
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70
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Castelletto V, Gouveia RJ, Connon CJ, Hamley IW, Seitsonen J, Ruokolainen J, Longo E, Siligardi G. Influence of elastase on alanine-rich peptide hydrogels. Biomater Sci 2014; 2:867-874. [DOI: 10.1039/c4bm00001c] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The self-assembly of the alanine-rich amphiphilic peptides Lys(Ala)6Lys (KA6K) and Lys(Ala)6Glu (KA6E) with homotelechelic or heterotelechelic charged termini respectively has been investigated in aqueous solution. The latter forms enzyme-degradable hydrogels.
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Affiliation(s)
- V. Castelletto
- School of Chemistry
- Food Biosciences and Pharmacy
- University of Reading
- Reading RG6 6AD, UK
| | - R. J. Gouveia
- School of Chemistry
- Food Biosciences and Pharmacy
- University of Reading
- Reading RG6 6AD, UK
| | - C. J. Connon
- School of Chemistry
- Food Biosciences and Pharmacy
- University of Reading
- Reading RG6 6AD, UK
| | - I. W. Hamley
- School of Chemistry
- Food Biosciences and Pharmacy
- University of Reading
- Reading RG6 6AD, UK
| | - J. Seitsonen
- Department of Applied Physics
- Aalto University School of Science
- FI-00076 Aalto, Finland
| | - J. Ruokolainen
- Department of Applied Physics
- Aalto University School of Science
- FI-00076 Aalto, Finland
| | - E. Longo
- Diamond Light Source Ltd
- Harwell Science and Innovation campus
- Didcot, UK
| | - G. Siligardi
- Diamond Light Source Ltd
- Harwell Science and Innovation campus
- Didcot, UK
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71
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Castelletto V, Gouveia RM, Connon CJ, Hamley IW, Seitsonen J, Nykänen A, Ruokolainen J. Alanine-rich amphiphilic peptide containing the RGD cell adhesion motif: a coating material for human fibroblast attachment and culture. Biomater Sci 2013; 2:362-369. [PMID: 32481862 DOI: 10.1039/c3bm60232j] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
We studied the self-assembly of peptide A6RGD (A: alanine, R: arginine, G: glycine, D: aspartic acid) in water, and the use of A6RGD substrates as coatings to promote the attachment of human cornea stromal fibroblasts (hCSFs). The self-assembled motif of A6RGD was shown to depend on the peptide concentration in water, where both vesicle and fibril formation were observed. Oligomers were detected for 0.7 wt% A6RGD, which evolved into short peptide fibres at 1.0 wt% A6RGD, while a co-existence of vesicles and long peptide fibres was revealed for 2-15 wt% A6RGD. A6RGD vesicle walls were shown to have a multilayer structure built out of highly interdigitated A6 units, while A6RGD fibres were based on β-sheet assemblies. Changes in the self-assembly motif with concentration were reflected in the cell culture assay results. Films dried from 0.1-1.0 wt% A6RGD solutions allowed hCSFs to attach and significantly enhanced cell proliferation relative to the control. In contrast, films dried from 2.5 wt% A6RGD solutions were toxic to hCSFs.
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Affiliation(s)
- V Castelletto
- School of Chemistry, Food Science and Pharmacy, University of Reading, Whiteknights, Reading RG6 6AD, UK.
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72
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Dehsorkhi A, Castelletto V, Hamley IW, Seitsonen J, Ruokolainen J. Interaction between a cationic surfactant-like peptide and lipid vesicles and its relationship to antimicrobial activity. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:14246-53. [PMID: 24156610 PMCID: PMC3836358 DOI: 10.1021/la403447u] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2013] [Revised: 10/22/2013] [Indexed: 05/21/2023]
Abstract
We investigate the properties of an antimicrobial surfactant-like peptide (Ala)6(Arg), A6R, containing a cationic headgroup. The interaction of this peptide with zwitterionic (DPPC) lipid vesicles is investigated using a range of microscopic, X-ray scattering, spectroscopic, and calorimetric methods. The β-sheet structure adopted by A6R is disrupted in the presence of DPPC. A strong effect on the small-angle X-ray scattering profile is observed: the Bragg peaks from the DPPC bilayers in the vesicle walls are eliminated in the presence of A6R and only bilayer form factor peaks are observed. All of these observations point to the interaction of A6R with DPPC bilayers. These studies provide insight into interactions between a model cationic peptide and vesicles, relevant to understanding the action of antimicrobial peptides on lipid membranes. Notably, peptide A6R exhibits antimicrobial activity without membrane lysis.
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Affiliation(s)
- Ashkan Dehsorkhi
- School of Chemistry, Pharmacy and Food Biosciences, University of Reading , Whiteknights, Reading, RG6 6AD, United Kingdom
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73
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Middleton DA, Madine J, Castelletto V, Hamley IW. Insights into the molecular architecture of a peptide nanotube using FTIR and solid-state NMR spectroscopic measurements on an aligned sample. Angew Chem Int Ed Engl 2013; 52:10537-40. [PMID: 23955926 PMCID: PMC4672711 DOI: 10.1002/anie.201301960] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2013] [Indexed: 11/05/2022]
Abstract
Queuing up: Molecular orientation within macroscopically aligned nanotubes of the peptide AAAAAAK can be studied by solid-state NMR and IR spectroscopy. Line shape analysis of the NMR spectra indicates that the peptide N-H bonds are tilted 65-70° relative to the nanotube long axis. Re-evaluation of earlier X-ray fiber diffraction data suggests that the peptide molecules are hydrogen-bonded in a helical arrangement along the nanotube axis.
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Affiliation(s)
- David A Middleton
- Institute of Integrative Biology, University of Liverpool, Crown Street, Liverpool L69 7ZB (UK).
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74
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Middleton DA, Madine J, Castelletto V, Hamley IW. Insights into the Molecular Architecture of a Peptide Nanotube Using FTIR and Solid-State NMR Spectroscopic Measurements on an Aligned Sample. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201301960] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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75
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Mazza M, Patel A, Pons R, Bussy C, Kostarelos K. Peptide nanofibres as molecular transporters: from self-assembly to in vivo degradation. Faraday Discuss 2013; 166:181-94. [DOI: 10.1039/c3fd00100h] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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76
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Castelletto V, Gouveia RM, Connon CJ, Hamley IW. New RGD-peptide amphiphile mixtures containing a negatively charged diluent. Faraday Discuss 2013; 166:381-97. [DOI: 10.1039/c3fd00064h] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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