51
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Arnon ZA, Pinotsi D, Schmidt M, Gilead S, Guterman T, Sadhanala A, Ahmad S, Levin A, Walther P, Kaminski CF, Fändrich M, Schierle GSK, Adler-Abramovich L, Shimon LJW, Gazit E. Opal-like Multicolor Appearance of Self-Assembled Photonic Array. ACS APPLIED MATERIALS & INTERFACES 2018; 10:20783-20789. [PMID: 29842782 PMCID: PMC6358003 DOI: 10.1021/acsami.8b04912] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Molecular self-assembly of short peptide building blocks leads to the formation of various material architectures that may possess unique physical properties. Recent studies had confirmed the key role of biaromaticity in peptide self-assembly, with the diphenylalanine (FF) structural family as an archetypal model. Another significant direction in the molecular engineering of peptide building blocks is the use of fluorenylmethoxycarbonyl (Fmoc) modification, which promotes the assembly process and may result in nanostructures with distinctive features and macroscopic hydrogel with supramolecular features and nanoscale order. Here, we explored the self-assembly of the protected, noncoded fluorenylmethoxycarbonyl-β,β-diphenyl-Ala-OH (Fmoc-Dip) amino acid. This process results in the formation of elongated needle-like crystals with notable aromatic continuity. By altering the assembly conditions, arrays of spherical particles were formed that exhibit strong light scattering. These arrays display vivid coloration, strongly resembling the appearance of opal gemstones. However, unlike the Rayleigh scattering effect produced by the arrangement of opal, the described optical phenomenon is attributed to Mie scattering. Moreover, by controlling the solution evaporation rate, i.e., the assembly kinetics, we were able to manipulate the resulting coloration. This work demonstrates a bottom-up approach, utilizing self-assembly of a protected amino acid minimal building block, to create arrays of organic, light-scattering colorful surfaces.
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Affiliation(s)
- Zohar A. Arnon
- Department of Molecular Microbiology and Biotechnology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Dorothea Pinotsi
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge CB3 0AS, United Kingdom
| | - Matthias Schmidt
- Institute of Protein Biochemistry, Ulm University, Ulm 89081, Germany
| | - Sharon Gilead
- Department of Molecular Microbiology and Biotechnology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Tom Guterman
- Department of Molecular Microbiology and Biotechnology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Aditya Sadhanala
- Cavendish Laboratory, Department of Physics, University of Cambridge, Cambridge CB3 0HE, United Kingdom
| | - Shahab Ahmad
- Institute for Manufacturing, Department of Engineering, University of Cambridge, Cambridge CB3 0FS, United Kingdom
| | - Aviad Levin
- Department of Molecular Microbiology and Biotechnology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Paul Walther
- Central Facility for Electron Microscopy, Ulm University, Ulm 89081, Germany
| | - Clemens F. Kaminski
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge CB3 0AS, United Kingdom
| | - Marcus Fändrich
- Institute of Protein Biochemistry, Ulm University, Ulm 89081, Germany
| | | | - Lihi Adler-Abramovich
- Department of Oral Biology, The Goldschleger School of Dental Medicine, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Linda J. W. Shimon
- Department of Chemical Research Support, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Ehud Gazit
- Department of Molecular Microbiology and Biotechnology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv 6997801, Israel
- Department of Materials Science and Engineering, Iby and Aladar Fleischman Faculty of Engineering, Tel Aviv University, Tel Aviv 6997801, Israel
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52
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Abstract
The formation of ordered nanostructures by molecular self-assembly of proteins and peptides represents one of the principal directions in nanotechnology. Indeed, polyamides provide superior features as materials with diverse physical properties. A reductionist approach allowed the identification of extremely short peptide sequences, as short as dipeptides, which could form well-ordered amyloid-like β-sheet-rich assemblies comparable to supramolecular structures made of much larger proteins. Some of the peptide assemblies show remarkable mechanical, optical, and electrical characteristics. Another direction of reductionism utilized a natural noncoded amino acid, α-aminoisobutryic acid, to form short superhelical assemblies. The use of this exceptional helix inducer motif allowed the fabrication of single heptad repeats used in various biointerfaces, including their use as surfactants and DNA-binding agents. Two additional directions of the reductionist approach include the use of peptide nucleic acids (PNAs) and coassembly techniques. The diversified accomplishments of the reductionist approach, as well as the exciting future advances it bears, are discussed.
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Affiliation(s)
- Ehud Gazit
- Department of Molecular Microbiology and Biotechnology, Department of Materials Science and Engineering, Tel Aviv University, Tel Aviv 6997801, Israel;
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53
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Makam P, Gazit E. Minimalistic peptide supramolecular co-assembly: expanding the conformational space for nanotechnology. Chem Soc Rev 2018; 47:3406-3420. [PMID: 29498728 PMCID: PMC6338309 DOI: 10.1039/c7cs00827a] [Citation(s) in RCA: 201] [Impact Index Per Article: 33.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Molecular self-assembly is a ubiquitous process in nature and central to bottom-up nanotechnology. In particular, the organization of peptide building blocks into ordered supramolecular structures has gained much interest due to the unique properties of the products, including biocompatibility, chemical and structural diversity, robustness and ease of large-scale synthesis. In addition, peptides, as short as dipeptides, contain all the molecular information needed to spontaneously form well-ordered structures at both the nano- and the micro-scale. Therefore, peptide supramolecular assembly has been effectively utilized to produce novel materials with tailored properties for various applications in the fields of material science, engineering, medicine, and biology. To further expand the conformational space of peptide assemblies in terms of structural and functional complexity, multicomponent (two or more) peptide supramolecular co-assembly has recently evolved as a promising extended approach, similar to the structural diversity of natural sequence-defined biopolymers (proteins) as well as of synthetic covalent co-polymers. The use of this methodology was recently demonstrated in various applications, such as nanostructure physical dimension control, the creation of non-canonical complex topologies, mechanical strength modulation, the design of light harvesting soft materials, fabrication of electrically conducting devices, induced fluorescence, enzymatic catalysis and tissue engineering. In light of these significant advancements in the field of peptide supramolecular co-assembly in the last few years, in this tutorial review, we provide an updated overview and future prospects of this emerging subject.
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Affiliation(s)
- Pandeeswar Makam
- Department of Molecular Microbiology and Biotechnology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv 6997801, Israel.
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54
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Abstract
Self-assembled peptide nanostructures have been increasingly exploited as functional materials for applications in biomedicine and energy. The emergent properties of these nanomaterials determine the applications for which they can be exploited. It has recently been appreciated that nanomaterials composed of multicomponent coassembled peptides often display unique emergent properties that have the potential to dramatically expand the functional utility of peptide-based materials. This review presents recent efforts in the development of multicomponent peptide assemblies. The discussion includes multicomponent assemblies derived from short low molecular weight peptides, peptide amphiphiles, coiled coil peptides, collagen, and β-sheet peptides. The design, structure, emergent properties, and applications for these multicomponent assemblies are presented in order to illustrate the potential of these formulations as sophisticated next-generation bio-inspired materials.
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Affiliation(s)
- Danielle M Raymond
- Department of Chemistry, University of Rochester, Rochester, NY 14627-0216, USA.
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55
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Shimizu T. Self-Assembly of Discrete Organic Nanotubes. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2018. [DOI: 10.1246/bcsj.20170424] [Citation(s) in RCA: 80] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Toshimi Shimizu
- AIST Fellow, National Institute of Advanced Industrial Science and Technology, Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
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56
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Mushnoori S, Schmidt K, Nanda V, Dutt M. Designing phenylalanine-based hybrid biological materials: controlling morphology via molecular composition. Org Biomol Chem 2018; 16:2499-2507. [PMID: 29565077 DOI: 10.1039/c8ob00130h] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Harnessing the self-assembly of peptide sequences has demonstrated great promise in the domain of creating high precision shape-tunable biomaterials. The unique properties of peptides allow for a building block approach to material design. In this study, self-assembly of mixed systems encompassing two peptide sequences with identical hydrophobic regions and distinct polar segments is investigated. The two peptide sequences are diphenylalanine and phenylalanine-asparagine-phenylalanine. The study examines the impact of molecular composition (namely, the total peptide concentration and the relative tripeptide concentration) on the morphology of the self-assembled hybrid biological material. We report a rich polymorphism in the assemblies of these peptides and explain the relationship between the peptide sequence, concentration and the morphology of the supramolecular assembly.
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Affiliation(s)
- Srinivas Mushnoori
- Department of Chemical and Biochemical Engineering, Robert Wood Johnson Medical School, Rutgers The State University of New Jersey, Piscataway, New Jersey, USA.
| | - Kassandra Schmidt
- Department of Biomedical Engineering, Robert Wood Johnson Medical School, Rutgers The State University of New Jersey, Piscataway, New Jersey, USA
| | - Vikas Nanda
- Center for Advanced Biotechnology and Medicine, Robert Wood Johnson Medical School, Rutgers The State University of New Jersey, Piscataway, New Jersey, USA and Department of Biochemistry and Molecular Biology, Robert Wood Johnson Medical School, Rutgers The State University of New Jersey, Piscataway, New Jersey, USA
| | - Meenakshi Dutt
- Department of Chemical and Biochemical Engineering, Robert Wood Johnson Medical School, Rutgers The State University of New Jersey, Piscataway, New Jersey, USA.
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57
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Halperin-Sternfeld M, Ghosh M, Sevostianov R, Grigoriants I, Adler-Abramovich L. Molecular co-assembly as a strategy for synergistic improvement of the mechanical properties of hydrogels. Chem Commun (Camb) 2018; 53:9586-9589. [PMID: 28808707 DOI: 10.1039/c7cc04187j] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Molecular self-assembly is a key direction for the fabrication of advanced materials. Yet, the physical properties of the formed assemblies are limited by the inherent characteristics of the specific building blocks. Here, we have applied a co-assembly approach to synergistically modulate the mechanical properties of peptide hydrogels, thereby forming extremely stable and rigid hydrogels.
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Affiliation(s)
- Michal Halperin-Sternfeld
- Department of Oral Biology, The Goldschleger School of Dental Medicine, Sackler Faculty of Medicine, Tel Aviv University, 69978, Israel.
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58
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Zhao Y, Yang W, Wang D, Wang J, Li Z, Hu X, King S, Rogers S, Lu JR, Xu H. Controlling the Diameters of Nanotubes Self-Assembled from Designed Peptide Bolaphiles. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1703216. [PMID: 29430820 DOI: 10.1002/smll.201703216] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Revised: 12/26/2017] [Indexed: 05/22/2023]
Abstract
Controlling the diameters of nanotubes represents a major challenge in nanostructures self-assembled from templating molecules. Here, two series of bolaform hexapeptides are designed, with Set I consisting of Ac-KI4 K-NH2 , Ac-KI3 NleK-NH2 , Ac-KI3 LK-NH2 and Ac-KI3 TleK-NH2 , and Set II consisting of Ac-KI3 VK-NH2 , Ac-KI2 V2 K-NH2 , Ac-KIV3 K-NH2 and Ac-KV4 K-NH2 . In Set I, substitution for Ile in the C-terminal alters its side-chain branching, but the hydrophobicity is retained. In Set II, the substitution of Val for Ile leads to the decrease of hydrophobicity, but the side-chain β-branching is retained. The peptide bolaphiles tend to form long nanotubes, with the tube shell being composed of a peptide monolayer. Variation in core side-chain branching and hydrophobicity causes a steady shift of peptide nanotube diameters from more than one hundred to several nanometers, thereby achieving a reliable control over the underlying molecular self-assembling processes. Given the structural and functional roles of peptide tubes with varying dimensions in nature and in technological applications, this study exemplifies the predictive templating of nanostructures from short peptide self-assembly.
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Affiliation(s)
- Yurong Zhao
- State Key Laboratory of Heavy Oil Processing and the Centre for Bioengineering and Biotechnology, China University of Petroleum (East China), Changjiang West Road, Qingdao, 266580, China
| | - Wei Yang
- State Key Laboratory of Heavy Oil Processing and the Centre for Bioengineering and Biotechnology, China University of Petroleum (East China), Changjiang West Road, Qingdao, 266580, China
| | - Dong Wang
- State Key Laboratory of Heavy Oil Processing and the Centre for Bioengineering and Biotechnology, China University of Petroleum (East China), Changjiang West Road, Qingdao, 266580, China
| | - Jiqian Wang
- State Key Laboratory of Heavy Oil Processing and the Centre for Bioengineering and Biotechnology, China University of Petroleum (East China), Changjiang West Road, Qingdao, 266580, China
| | - Zongyi Li
- Biological Physics Laboratory, School of Physics and Astronomy, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Xuzhi Hu
- Biological Physics Laboratory, School of Physics and Astronomy, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Stephen King
- ISIS Pulsed Neutron Source, STFC Rutherford Appleton Laboratory, Didcot, Oxon, OX11 0QX, UK
| | - Sarah Rogers
- ISIS Pulsed Neutron Source, STFC Rutherford Appleton Laboratory, Didcot, Oxon, OX11 0QX, UK
| | - Jian R Lu
- Biological Physics Laboratory, School of Physics and Astronomy, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Hai Xu
- State Key Laboratory of Heavy Oil Processing and the Centre for Bioengineering and Biotechnology, China University of Petroleum (East China), Changjiang West Road, Qingdao, 266580, China
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59
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Sasselli IR, Moreira IP, Ulijn RV, Tuttle T. Molecular dynamics simulations reveal disruptive self-assembly in dynamic peptide libraries. Org Biomol Chem 2018; 15:6541-6547. [PMID: 28745772 DOI: 10.1039/c7ob01268c] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
There is significant interest in the use of unmodified self-assembling peptides as building blocks for functional, supramolecular biomaterials. Recently, dynamic peptide libraries (DPLs) have been proposed to select self-assembling materials from dynamically exchanging mixtures of dipeptide inputs in the presence of a nonspecific protease enzyme, where peptide sequences are selected and amplified based on their self-assembling tendencies. It was shown that the results of the DPL of mixed sequences (e.g. starting from a mixture of dileucine, L2, and diphenylalanine, F2) did not give the same outcome as the separate L2 and F2 libraries (which give rise to the formation of F6 and L6), implying that interactions between these sequences could disrupt the self-assembly. In this study, coarse grained molecular dynamics (CG-MD) simulations are used to understand the DPL results for F2, L2 and mixed libraries. CG-MD simulations demonstrate that interactions between precursors can cause the low formation yield of hexapeptides in the mixtures of dipeptides and show that this ability to disrupt is influenced by the concentration of the different species in the DPL. The disrupting self-assembly effect between the species in the DPL is an important effect to take into account in dynamic combinatorial chemistry as it affects the possible discovery of new materials. This work shows that combined computational and experimental screening can be used complementarily and in combination providing a powerful means to discover new supramolecular peptide nanostructures.
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Affiliation(s)
- I R Sasselli
- Department of Pure & Applied Chemistry, WestCHEM, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, UK.
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60
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Avinash MB, Govindaraju T. Architectonics: Design of Molecular Architecture for Functional Applications. Acc Chem Res 2018; 51:414-426. [PMID: 29364649 DOI: 10.1021/acs.accounts.7b00434] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
The term architectonics has its roots in the architectural and philosophical (as early as 1600s) literature that refers to "the theory of structure" and "the structure of theory", respectively. The concept of architectonics has been adapted to advance the field of molecular self-assembly and termed as molecular architectonics. In essence, the methodology of organizing molecular units in the required and controlled configurations to develop advanced functional systems for materials and biological applications comprises the field of molecular architectonics. This concept of designing noncovalent systems enables to focus on different functional aspects of designer molecules for biological and nonbiological applications and also strengthens our efforts toward the mastery over the art of controlled molecular self-assemblies. Programming complex molecular interactions and assemblies for specific functions has been one of the most challenging tasks in the modern era. Meticulously ordered molecular assemblies can impart remarkable developments in several areas spanning energy, health, and environment. For example, the well-defined nano-, micro-, and macroarchitectures of functional molecules with specific molecular ordering possess potential applications in flexible electronics, photovoltaics, photonic crystals, microreactors, sensors, drug delivery, biomedicine, and superhydrophobic coatings, among others. The functional molecular architectures having unparalleled properties are widely evident in various designs of Nature. By drawing inspirations from Nature, intended molecular architectures can be designed and developed to harvest various functions, as there is an inexhaustible resource and scope. In this Account, we present exquisite designer molecules developed by our group and others with an objective to master the art of molecular recognition and self-assembly for functional applications. We demonstrate the tailor-ability of molecular self-assemblies by employing biomolecules like amino acids and nucleobases as auxiliaries. Naphthalenediimide (NDI), perylenediimide (PDI), and few other molecular systems serve as functional modules. The effects of stereochemistry and minute structural modifications in the molecular designs on the supramolecular interactions, and construction of self-assembled zero-dimensional (OD), one-dimensional (1D), and two-dimensional (2D) nano- and microarchitectures like particles, spheres, cups, bowls, fibers, belts, helical belts, supercoiled helices, sheets, fractals, and honeycomb-like arrays are discussed in extensive detail. Additionally, we present molecular systems that showcase the elegant designs of coassembly, templated assembly, hierarchical assembly, transient self-assembly, chiral denaturation, retentive helical memory, self-replication, supramolecular regulation, supramolecular speciation, supernon linearity, dynamic pathway complexity, supramolecular heterojunction, living supramolecular polymerization, and molecular machines. Finally, we describe the molecular engineering principles learnt over the years that have led to several applications, namely, organic electronics, self-cleaning, high-mechanical strength, and tissue engineering.
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Affiliation(s)
- M. B. Avinash
- Bioorganic Chemistry Laboratory,
New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru 560064, India
| | - Thimmaiah Govindaraju
- Bioorganic Chemistry Laboratory,
New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru 560064, India
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61
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Li X, Fei J, Xu Y, Li D, Yuan T, Li G, Wang C, Li J. A Photoinduced Reversible Phase Transition in a Dipeptide Supramolecular Assembly. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201711547] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Xianbao Li
- Beijing National Laboratory for Molecular Sciences (BNLMS); CAS Key Lab of Colloid; Interface and Chemical Thermodynamics; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 China
- University of Chinese Academy of Sciences; Beijing 100049 China
| | - Jinbo Fei
- Beijing National Laboratory for Molecular Sciences (BNLMS); CAS Key Lab of Colloid; Interface and Chemical Thermodynamics; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 China
| | - Youqian Xu
- Beijing National Laboratory for Molecular Sciences (BNLMS); CAS Key Lab of Colloid; Interface and Chemical Thermodynamics; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 China
- University of Chinese Academy of Sciences; Beijing 100049 China
| | - Dongxiang Li
- College of Chemistry and Molecular Engineering; Qingdao University of Science and Technology; Qingdao 260042 China
| | - Tingting Yuan
- Beijing National Laboratory for Molecular Sciences (BNLMS); CAS Key Lab of Colloid; Interface and Chemical Thermodynamics; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 China
- University of Chinese Academy of Sciences; Beijing 100049 China
| | - Guangle Li
- Beijing National Laboratory for Molecular Sciences (BNLMS); CAS Key Lab of Colloid; Interface and Chemical Thermodynamics; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 China
- University of Chinese Academy of Sciences; Beijing 100049 China
| | - Chenlei Wang
- Beijing National Laboratory for Molecular Sciences (BNLMS); CAS Key Lab of Colloid; Interface and Chemical Thermodynamics; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 China
- University of Chinese Academy of Sciences; Beijing 100049 China
| | - Junbai Li
- Beijing National Laboratory for Molecular Sciences (BNLMS); CAS Key Lab of Colloid; Interface and Chemical Thermodynamics; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 China
- University of Chinese Academy of Sciences; Beijing 100049 China
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62
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Li X, Fei J, Xu Y, Li D, Yuan T, Li G, Wang C, Li J. A Photoinduced Reversible Phase Transition in a Dipeptide Supramolecular Assembly. Angew Chem Int Ed Engl 2018; 57:1903-1907. [PMID: 29280315 DOI: 10.1002/anie.201711547] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Indexed: 12/31/2022]
Abstract
Tunable supramolecular assembly has found various applications in biomedicine, molecular catalysis, optoelectronics, and nanofabrication. Unlike traditional covalent conjugation, non-covalent introduction of a photoswitchable moiety enables reversible photomodulation of non-photosensitive dipeptide supramolecular assembly. Under light illumination, a long-lived photoacid generator releases a proton and mediates the dissociation of dipeptide-based organogel, thereby resulting in sol formation. Under darkness, the photoswitchable moiety entraps a proton, resulting in gel regeneration. Furthermore, accompanying the isothermal recycled gel-sol transition in a spatially controlled manner, renewable patterns are spontaneously fabricated. This new concept of light-controlled phase transition of amino acid-based supramolecular assemblies will open up the possibility of wide applications.
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Affiliation(s)
- Xianbao Li
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Lab of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Jinbo Fei
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Lab of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Youqian Xu
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Lab of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Dongxiang Li
- College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao, 260042, China
| | - Tingting Yuan
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Lab of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Guangle Li
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Lab of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Chenlei Wang
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Lab of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Junbai Li
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Lab of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
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63
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Abstract
Semiconductors are central to the modern electronics and optics industries. Conventional semiconductive materials bear inherent limitations, especially in emerging fields such as interfacing with biological systems and bottom-up fabrication. A promising candidate for bioinspired and durable nanoscale semiconductors is the family of self-assembled nanostructures comprising short peptides. The highly ordered and directional intermolecular π-π interactions and hydrogen-bonding network allow the formation of quantum confined structures within the peptide self-assemblies, thus decreasing the band gaps of the superstructures into semiconductor regions. As a result of the diverse architectures and ease of modification of peptide self-assemblies, their semiconductivity can be readily tuned, doped, and functionalized. Therefore, this family of electroactive supramolecular materials may bridge the gap between the inorganic semiconductor world and biological systems.
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Affiliation(s)
- Kai Tao
- Department of Molecular Microbiology and Biotechnology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Pandeeswar Makam
- Department of Molecular Microbiology and Biotechnology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Ruth Aizen
- Department of Molecular Microbiology and Biotechnology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Ehud Gazit
- Department of Molecular Microbiology and Biotechnology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv 6997801, Israel.
- Department of Materials Science and Engineering, Iby and Aladar Fleischman Faculty of Engineering, Tel Aviv University, Tel Aviv 6997801, Israel
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64
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Tong L, Wang Z, Xia C, Yang Y, Yuan S, Sun D, Xin X. Self-Assembly of Peptide-Polyoxometalate Hybrid Sub-Micrometer Spheres for Photocatalytic Degradation of Methylene Blue. J Phys Chem B 2017; 121:10566-10573. [DOI: 10.1021/acs.jpcb.7b07100] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Lu Tong
- National
Engineering Technology Research Center for Colloidal Materials, Shandong University, Jinan, 250100, P. R. China
| | - Zhi Wang
- Key
Lab for Colloid and Interface Chemistry of Education Ministry, School
of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, P. R. China
| | - Congxin Xia
- National
Engineering Technology Research Center for Colloidal Materials, Shandong University, Jinan, 250100, P. R. China
| | - Yingjie Yang
- National
Engineering Technology Research Center for Colloidal Materials, Shandong University, Jinan, 250100, P. R. China
| | - Shiling Yuan
- Key
Lab for Colloid and Interface Chemistry of Education Ministry, School
of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, P. R. China
| | - Di Sun
- Key
Lab for Colloid and Interface Chemistry of Education Ministry, School
of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, P. R. China
| | - Xia Xin
- National
Engineering Technology Research Center for Colloidal Materials, Shandong University, Jinan, 250100, P. R. China
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65
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Wang J, Yuan C, Han Y, Wang Y, Liu X, Zhang S, Yan X. Trace Water as Prominent Factor to Induce Peptide Self-Assembly: Dynamic Evolution and Governing Interactions in Ionic Liquids. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2017; 13:1702175. [PMID: 28976074 DOI: 10.1002/smll.201702175] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Revised: 08/12/2017] [Indexed: 05/22/2023]
Abstract
The interaction between water and biomolecules including peptides is of critical importance for forming high-level architectures and triggering life's functions. However, the bulk aqueous environment has limitations in detecting the kinetics and mechanisms of peptide self-assembly, especially relating to interactions of trace water. With ionic liquids (ILs) as a nonconventional medium, herein, it is discovered that trace amounts of water play a decisive role in triggering self-assembly of a biologically derived dipeptide. ILs provide a suitable nonaqueous environment, enabling us to mediate water content and follow the dynamic evolution of peptide self-assembly. The trace water is found to be involved in the assembly process of dipeptide, especially leading to the formation of stable noncovalent dipeptide oligomers in the early stage of nucleation, as evident by both experimental studies and theoretical simulations. The thermodynamics of the growth process is mainly governed by a synergistic effect of hydrophobic interaction and hydrogen bonds. Each step of assembly presents a different trend in thermodynamic energy. The dynamic evolution of assembly process can be efficiently mediated by changing trace water content. The decisive role of trace water in triggering and mediating self-assembly of biomolecules provides a new perspective in understanding supramolecular chemistry and molecular self-organization in biology.
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Affiliation(s)
- Juan Wang
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China
- Center for Mesoscience, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China
| | - Chengqian Yuan
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China
- Center for Mesoscience, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China
| | - Yuchun Han
- Key Laboratory of Colloid and Interface Science, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Yilin Wang
- Key Laboratory of Colloid and Interface Science, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Xiaomin Liu
- Center for Mesoscience, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China
- Beijing Key Laboratory of Ionic Liquids Clean Process, State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China
| | - Suojiang Zhang
- Center for Mesoscience, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China
- Beijing Key Laboratory of Ionic Liquids Clean Process, State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China
| | - Xuehai Yan
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China
- Center for Mesoscience, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China
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66
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Yin Z, Wu F, Zheng Z, Kaplan DL, Kundu SC, Lu S. Self-Assembling Silk-Based Nanofibers with Hierarchical Structures. ACS Biomater Sci Eng 2017; 3:2617-2627. [DOI: 10.1021/acsbiomaterials.7b00442] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Zhuping Yin
- National
Engineering Laboratory for Modern Silk, College of Textile and Clothing
Engineering, Soochow University, Suzhou 215123, China
| | - Feng Wu
- National
Engineering Laboratory for Modern Silk, College of Textile and Clothing
Engineering, Soochow University, Suzhou 215123, China
| | - Zhaozhu Zheng
- National
Engineering Laboratory for Modern Silk, College of Textile and Clothing
Engineering, Soochow University, Suzhou 215123, China
| | - David L. Kaplan
- National
Engineering Laboratory for Modern Silk, College of Textile and Clothing
Engineering, Soochow University, Suzhou 215123, China
- Department
of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155, United States
| | - Subhas C. Kundu
- 3Bs
Research Group, Headquarters of the European Institute of Excellence
on Tissue Engineering and Regenerative Medicine, University of Minho, AvePark, 4805-017 Barco, Guimarãdes, Portugal
| | - Shenzhou Lu
- National
Engineering Laboratory for Modern Silk, College of Textile and Clothing
Engineering, Soochow University, Suzhou 215123, China
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67
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Wei G, Su Z, Reynolds NP, Arosio P, Hamley IW, Gazit E, Mezzenga R. Self-assembling peptide and protein amyloids: from structure to tailored function in nanotechnology. Chem Soc Rev 2017; 46:4661-4708. [PMID: 28530745 PMCID: PMC6364806 DOI: 10.1039/c6cs00542j] [Citation(s) in RCA: 531] [Impact Index Per Article: 75.9] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Self-assembled peptide and protein amyloid nanostructures have traditionally been considered only as pathological aggregates implicated in human neurodegenerative diseases. In more recent times, these nanostructures have found interesting applications as advanced materials in biomedicine, tissue engineering, renewable energy, environmental science, nanotechnology and material science, to name only a few fields. In all these applications, the final function depends on: (i) the specific mechanisms of protein aggregation, (ii) the hierarchical structure of the protein and peptide amyloids from the atomistic to mesoscopic length scales and (iii) the physical properties of the amyloids in the context of their surrounding environment (biological or artificial). In this review, we will discuss recent progress made in the field of functional and artificial amyloids and highlight connections between protein/peptide folding, unfolding and aggregation mechanisms, with the resulting amyloid structure and functionality. We also highlight current advances in the design and synthesis of amyloid-based biological and functional materials and identify new potential fields in which amyloid-based structures promise new breakthroughs.
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Affiliation(s)
- Gang Wei
- Faculty of Production Engineering, University of Bremen, Bremen,
Germany
| | - Zhiqiang Su
- State Key Laboratory of Chemical Resource Engineering, Beijing
University of Chemical Technology, China
| | - Nicholas P. Reynolds
- ARC Training Centre for Biodevices, Swinburne University of
Technology, Melbourne, Australia
| | - Paolo Arosio
- Department of Chemistry and Applied Biosciences, ETH-Zurich,
Switzerland
| | | | - Ehud Gazit
- Faculty of Life Sciences, Tel Aviv University, Israel
| | - Raffaele Mezzenga
- Department of Health Science and Technology, ETH-Zurich,
Switzerland
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68
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Nagy-Smith K, Beltramo PJ, Moore E, Tycko R, Furst EM, Schneider JP. Molecular, Local, and Network-Level Basis for the Enhanced Stiffness of Hydrogel Networks Formed from Coassembled Racemic Peptides: Predictions from Pauling and Corey. ACS CENTRAL SCIENCE 2017; 3:586-597. [PMID: 28691070 PMCID: PMC5492410 DOI: 10.1021/acscentsci.7b00115] [Citation(s) in RCA: 85] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Indexed: 05/20/2023]
Abstract
Hydrogels prepared from self-assembling peptides are promising materials for medical applications, and using both l- and d-peptide isomers in a gel's formulation provides an intuitive way to control the proteolytic degradation of an implanted material. In the course of developing gels for delivery applications, we discovered that a racemic mixture of the mirror-image β-hairpin peptides, named MAX1 and DMAX1, provides a fibrillar hydrogel that is four times more rigid than gels formed by either peptide alone-a puzzling observation. Herein, we use transmission electron microscopy, small angle neutron scattering, solid state NMR, diffusing wave, infrared, and fluorescence spectroscopies, and modeling to determine the molecular basis for the increased mechanical rigidity of the racemic gel. We find that enantiomeric peptides coassemble in an alternating fashion along the fibril long axis, forming an extended heterochiral pleat-like β-sheet, a structure predicted by Pauling and Corey in 1953. Hydrogen bonding between enantiomers within the sheet dictates the placement of hydrophobic valine side chains in the fibrils' dry interior in a manner that allows the formation of nested hydrophobic interactions between enantiomers, interactions not accessible within enantiomerically pure fibrils. Importantly, this unique molecular arrangement of valine side chains maximizes inter-residue contacts within the core of the fibrils resulting in their local stiffening, which in turn, gives rise to the significant increase in bulk mechanical rigidity observed for the racemic hydrogel.
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Affiliation(s)
- Katelyn Nagy-Smith
- Chemical
Biology Laboratory, National Cancer Institute, Frederick, Maryland 21702, United States
- Department of Chemistry and Biochemistry and Department of Chemical
and Biomolecular
Engineering, University of Delaware, Newark, Delaware 19716, United States
| | - Peter J. Beltramo
- Department of Chemistry and Biochemistry and Department of Chemical
and Biomolecular
Engineering, University of Delaware, Newark, Delaware 19716, United States
| | - Eric Moore
- 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
| | - Eric M. Furst
- Department of Chemistry and Biochemistry and Department of Chemical
and Biomolecular
Engineering, University of Delaware, Newark, Delaware 19716, United States
| | - Joel P. Schneider
- Chemical
Biology Laboratory, National Cancer Institute, Frederick, Maryland 21702, United States
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69
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Chen KH, Corro KA, Le SP, Nowick JS. X-ray Crystallographic Structure of a Giant Double-Walled Peptide Nanotube Formed by a Macrocyclic β-Sheet Containing Aβ16–22. J Am Chem Soc 2017; 139:8102-8105. [DOI: 10.1021/jacs.7b03890] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kevin H. Chen
- Department of Chemistry, University of California, Irvine, Irvine, California 92697-2025, United States
| | - Kelsey A. Corro
- Department of Chemistry, University of California, Irvine, Irvine, California 92697-2025, United States
| | - Stephanie P. Le
- Department of Chemistry, University of California, Irvine, Irvine, California 92697-2025, United States
| | - James S. Nowick
- Department of Chemistry, University of California, Irvine, Irvine, California 92697-2025, United States
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70
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Liu X, Fei J, Wang A, Cui W, Zhu P, Li J. Transformation of Dipeptide-Based Organogels into Chiral Crystals by Cryogenic Treatment. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201612024] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Xingcen Liu
- Beijing National Laboratory for Molecular Sciences (BNLMS); CAS Key Lab of Colloid, Interface and Chemical Thermodynamics; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 China
- University of Chinese Academy of Sciences; Beijing 100049 China
| | - Jinbo Fei
- Beijing National Laboratory for Molecular Sciences (BNLMS); CAS Key Lab of Colloid, Interface and Chemical Thermodynamics; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 China
| | - Anhe Wang
- State Key Laboratory of Biochemical Engineering; Institute of Process Engineering; Chinese Academy of Sciences; Beijing 100190 China
| | - Wei Cui
- Beijing National Laboratory for Molecular Sciences (BNLMS); CAS Key Lab of Colloid, Interface and Chemical Thermodynamics; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 China
| | - Pengli Zhu
- Shenzhen Institutes of Advanced Technology; Chinese Academy of Sciences; Shenzhen 518055 China
| | - Junbai Li
- Beijing National Laboratory for Molecular Sciences (BNLMS); CAS Key Lab of Colloid, Interface and Chemical Thermodynamics; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 China
- University of Chinese Academy of Sciences; Beijing 100049 China
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71
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Liu X, Fei J, Wang A, Cui W, Zhu P, Li J. Transformation of Dipeptide-Based Organogels into Chiral Crystals by Cryogenic Treatment. Angew Chem Int Ed Engl 2017; 56:2660-2663. [PMID: 28140492 DOI: 10.1002/anie.201612024] [Citation(s) in RCA: 83] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2016] [Indexed: 12/22/2022]
Abstract
Controlled molecular assembly is an important approach for the synthesis of single-component materials with diverse functions. Unlike traditional heat treatment or solvent modulation, cryogenic treatment at 77 K enabled the tunable transition of a self-assembled diphenylalanine organogel into a hexagonal crystal. Under these conditions, the assembled molecules undergo an internal rearrangement in the solid state to form a well-defined chiral crystal structure. Moreover, these assemblies exhibit enhanced emission. This strategy for the synthesis of single-component supramolecular assemblies can create new functions by manipulating phase transitions.
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Affiliation(s)
- Xingcen Liu
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Lab of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Jinbo Fei
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Lab of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Anhe Wang
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China
| | - Wei Cui
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Lab of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Pengli Zhu
- Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Junbai Li
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Lab of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
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72
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Pizzi A, Lascialfari L, Demitri N, Bertolani A, Maiolo D, Carretti E, Metrangolo P. Halogen bonding modulates hydrogel formation from Fmoc amino acids. CrystEngComm 2017. [DOI: 10.1039/c7ce00031f] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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73
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Ji M, Daniels B, Shieh A, Modarelli DA, Parquette JR. Controlling the length of self-assembled nanotubes by sonication followed by polymer wrapping. Chem Commun (Camb) 2017; 53:12806-12809. [PMID: 29143056 DOI: 10.1039/c7cc07418b] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
In this work, we report that sonication, followed by polymer-wrapping, is an effective strategy to reduce the length of self-assembled nanotubes and suspend their propensity to self-heal into their elongated precursors.
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Affiliation(s)
- Mingyang Ji
- Department of Chemistry
- The Ohio State University
- Ohio 43210
- USA
| | - Brian Daniels
- Department of Chemistry
- The Ohio State University
- Ohio 43210
- USA
| | - Aileen Shieh
- Department of Chemistry
- The Ohio State University
- Ohio 43210
- USA
| | - David A. Modarelli
- Department of Chemistry and The Center for Laser and Optical Spectroscopy
- Knight Chemical Laboratory
- The University of Akron
- Akron
- USA
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74
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Medini K, West B, Williams DE, Brimble MA, Gerrard JA. MALDI-imaging enables direct observation of kinetic and thermodynamic products of mixed peptide fiber assembly. Chem Commun (Camb) 2017; 53:1715-1718. [DOI: 10.1039/c6cc10146a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first use of MALDI-imaging, as a snapshot tool to characterize multicomponent self-assembling peptide fibers.
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Affiliation(s)
- Karima Medini
- School of Chemical Sciences
- Auckland University
- Auckland 1010
- New Zealand
- MacDiarmid Institute for Advanced Materials and Nanotechnology
| | - Brandi West
- School of Biological Sciences
- Auckland University
- Auckland 1010
- New Zealand
| | - David E. Williams
- School of Chemical Sciences
- Auckland University
- Auckland 1010
- New Zealand
- MacDiarmid Institute for Advanced Materials and Nanotechnology
| | - Margaret A. Brimble
- School of Chemical Sciences
- Auckland University
- Auckland 1010
- New Zealand
- MacDiarmid Institute for Advanced Materials and Nanotechnology
| | - Juliet A. Gerrard
- School of Chemical Sciences
- Auckland University
- Auckland 1010
- New Zealand
- MacDiarmid Institute for Advanced Materials and Nanotechnology
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75
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Creasey RCG, Louzao I, Arnon ZA, Marco P, Adler-Abramovich L, Roberts CJ, Gazit E, Tendler SJB. Disruption of diphenylalanine assembly by a Boc-modified variant. SOFT MATTER 2016; 12:9451-9457. [PMID: 27841428 DOI: 10.1039/c6sm01770c] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Peptide-based biomaterials are key to the future of diagnostics and therapy, promoting applications such as tissue scaffolds and drug delivery vehicles. To realise the full potential of the peptide systems, control and optimisation of material properties are essential. Here we investigated the co-assembly of the minimal amyloid motif peptide, diphenylalanine (FF), and its tert-butoxycarbonyl (Boc)-modified derivative. Using Atomic Force Microscopy, we demonstrated that the co-assembled fibers are less rigid and show a curvier morphology. We propose that the Boc-modification of FF disrupts the hydrogen bond packing of adjacent N-termini, as supported by Fourier transform infrared and fluorescence spectroscopic data. Such rationally modified co-assemblies offer chemical functionality for after-assembly modification and controllable surface properties for tissue engineering scaffolds, along with tunable morphological vs. mechanical properties.
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Affiliation(s)
| | - Iria Louzao
- School of Pharmacy, University of Nottingham, NG7 2RD Nottingham, UK
| | - Zohar A Arnon
- Department for Molecular Microbiology and Biotechnology, Tel Aviv University, 6997801 Tel Aviv, Israel
| | - Pini Marco
- Department for Molecular Microbiology and Biotechnology, Tel Aviv University, 6997801 Tel Aviv, Israel
| | - Lihi Adler-Abramovich
- Department of Oral Biology, The Goldschleger School of Dental Medicine, Sackler Faculty of Medicine, Tel Aviv University, 6997801 Tel Aviv, Israel
| | - Clive J Roberts
- School of Pharmacy, University of Nottingham, NG7 2RD Nottingham, UK
| | - Ehud Gazit
- Department for Molecular Microbiology and Biotechnology, Tel Aviv University, 6997801 Tel Aviv, Israel
| | - Saul J B Tendler
- School of Pharmacy, University of Nottingham, NG7 2RD Nottingham, UK
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