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Lin B, Xie J, Gao B, He B. Efficient Biosynthetic Fabrication of Spidroins with High Spinning Performance. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2400128. [PMID: 38520721 PMCID: PMC11165546 DOI: 10.1002/advs.202400128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Revised: 03/16/2024] [Indexed: 03/25/2024]
Abstract
The unique 3D structure of spider silk protein (spidroin) determines the excellent mechanical properties of spidroin fiber, but the difficulty of heterologous expression and poor spinning performance of recombinant spider silk protein limit its application. A high-yield low-molecular-weight biomimetic spidroin (Amy-6rep) is obtained by sequence modification, and its excellent spinning performance is verified by electrospinning it for use as a nanogenerator. Amy-6rep increases the highly fibrogenic microcrystalline region in the core repeat region of natural spidroin with limited sequence length and replaces the polyalanine sequence with an amyloid polypeptide through structural similarity. Due to sequence modification, the expression of Amy-6rep increased by ≈200%, and the self-assembly performance of Amy-6rep significantly increased. After electrospinning with Amy-6rep, the nanofibers exhibit good tribopower generation capacity. In this paper, a biomimetic spidroin sequence design with high yield and good spinning performance is reported, and a strategy for electrospinning to produce an artificial nanogenerator is explored.
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Affiliation(s)
- Baoyang Lin
- College of Biotechnology and Pharmaceutical EngineeringSchool of Pharmaceutical SciencesNanjing Tech UniversityNanjing211816China
| | - Jingjun Xie
- College of Biotechnology and Pharmaceutical EngineeringSchool of Pharmaceutical SciencesNanjing Tech UniversityNanjing211816China
| | - Bingbing Gao
- College of Biotechnology and Pharmaceutical EngineeringSchool of Pharmaceutical SciencesNanjing Tech UniversityNanjing211816China
| | - Bingfang He
- College of Biotechnology and Pharmaceutical EngineeringSchool of Pharmaceutical SciencesNanjing Tech UniversityNanjing211816China
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2
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Hofmaier M, Heger JE, Lentz S, Schwarz S, Müller-Buschbaum P, Scheibel T, Fery A, Müller M. Influence of the Sequence Motive Repeating Number on Protein Folding in Spider Silk Protein Films. Biomacromolecules 2023; 24:5707-5721. [PMID: 37934893 DOI: 10.1021/acs.biomac.3c00688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2023]
Abstract
Like multiblock copolymers, spider silk proteins are built of repetitive sequence motives. One prominent repetitive motif is based on the consensus sequence of spidroin 4 of the spider Araneus diadematus ADF4. The number x of the repeating sequence motives (C) determines the molecular weight of the recombinant ADF4-based, engineered spider silk protein denoted as eADF4(Cx). eADF4(Cx) can be used as a model for intrinsically disordered proteins (IDP) and to elucidate their folding. Herein, the influence of the variation of the sequence motive repeating number x (x = 1, 2, 4, 8, 16) on the protein folding within eADF4(Cx) films was investigated. eADF4(Cx) films were cast from 1,1,1,3,3,3-hexafluoropropan-2-ol (HFIP) solutions onto planar silicon model substrates, revealing mainly helical or random coil structure. Upon treatment with methanol vapor (ptm), the formation of crystalline β-sheets was triggered. Dichroic Fourier-transform infrared (FTIR) spectroscopy, circular dichroism, spectroscopic ellipsometry, atomic force microscopy, grazing-incidence small-angle X-ray scattering (GISAXS), grazing-incidence wide-angle X-ray scattering (GIWAXS), and electrokinetic and contact angle measurements were used to get information concerning the secondary structure and folding kinetics, orientation of β-sheets, the ratio of parallel/antiparallel β-sheets, domain sizes and distributions, surface topography, surface potential, hydrophobicity and the film integrity under water. Significant differences in the final β-sheet content, the share of antiparallel β-sheet structures, film integrity, surface potential, and isoelectric points between eADF4(Cx) with x = 1, 2 and eADF4(Cx) with x = 4, 8, 16 gave new insights in the molecular weight-dependent structure formation and film properties of IDP systems. GISAXS and kinetic measurements confirmed a relation between β-sheet crystal growth rate and final β-sheet crystal size. Further, competing effects of reduced diffusibility hindering accelerated crystal growth and enhanced backfolding promoting accelerated crystal growth with increasing molecular weight were discussed.
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Affiliation(s)
- Mirjam Hofmaier
- Institute of Physical Chemistry and Polymer Physics, Leibniz Institute of Polymer Research Dresden (IPF), Dresden 01069, Germany
- Chair of Physical Chemistry of Polymeric Materials, Technical University Dresden (TUD), Dresden 01069, Germany
| | - Julian E Heger
- TUM School of Natural Sciences, Department of Physics, Chair for Functional Materials, Technical University of Munich, Garching 85748, Germany
| | - Sarah Lentz
- Functional Polymer Interfaces Group, University of Bayreuth, Bayreuth 95447, Germany
| | - Simona Schwarz
- Institute of Physical Chemistry and Polymer Physics, Leibniz Institute of Polymer Research Dresden (IPF), Dresden 01069, Germany
| | - Peter Müller-Buschbaum
- TUM School of Natural Sciences, Department of Physics, Chair for Functional Materials, Technical University of Munich, Garching 85748, Germany
- Heinz Maier-Leibnitz Zentrum (MLZ), Technical University of Munich, Garching 85748, Germany
| | - Thomas Scheibel
- Chair of Biomaterials, University of Bayreuth, Bayreuth 95447, Germany
- Bayreuth Center of Colloids and Interfaces (BZKG), University of Bayreuth, Bayreuth 95440, Germany
- Bayreuth Center for Molecular Bioscience (BZMB), University of Bayreuth, Bayreuth 95440, Germany
- Bayreuth Center for Material Science and Engineering (BayMAT), Universität Bayreuth, Bayreuth 95440, Germany
- Bavarian Polymer Institute (BPI), University of Bayreuth, Bayreuth 95440, Germany
| | - Andreas Fery
- Institute of Physical Chemistry and Polymer Physics, Leibniz Institute of Polymer Research Dresden (IPF), Dresden 01069, Germany
- Chair of Physical Chemistry of Polymeric Materials, Technical University Dresden (TUD), Dresden 01069, Germany
| | - Martin Müller
- Institute of Physical Chemistry and Polymer Physics, Leibniz Institute of Polymer Research Dresden (IPF), Dresden 01069, Germany
- Chair of Macromolecular Chemistry, Technical University of Dresden (TUD), Dresden 01062, Germany
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3
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Xie Q, On Lee S, Vissamsetti N, Guo S, Johnson ME, Fried SD. Secretion-Catalyzed Assembly of Protein Biomaterials on a Bacterial Membrane Surface. Angew Chem Int Ed Engl 2023; 62:e202305178. [PMID: 37469298 DOI: 10.1002/anie.202305178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 06/28/2023] [Accepted: 07/18/2023] [Indexed: 07/21/2023]
Abstract
Protein-based biomaterials have played a key role in tissue engineering, and additional exciting applications as self-healing materials and sustainable polymers are emerging. Over the past few decades, recombinant expression and production of various fibrous proteins from microbes have been demonstrated; however, the resulting proteins typically must then be purified and processed by humans to form usable fibers and materials. Here, we show that the Gram-positive bacterium Bacillus subtilis can be programmed to secrete silk through its translocon via an orthogonal signal peptide/peptidase pair. Surprisingly, we discover that this translocation mechanism drives the silk proteins to assemble into fibers spontaneously on the cell surface, in a process we call secretion-catalyzed assembly (SCA). Secreted silk fibers form self-healing hydrogels with minimal processing. Alternatively, the fibers retained on the membrane provide a facile route to create engineered living materials from Bacillus cells. This work provides a blueprint to achieve autonomous assembly of protein biomaterials in useful morphologies directly from microbial factories.
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Affiliation(s)
- Qi Xie
- Department of Chemistry, Johns Hopkins University, 21218, Baltimore, MD, USA
| | - Sea On Lee
- Department of Chemistry, Johns Hopkins University, 21218, Baltimore, MD, USA
| | - Nitya Vissamsetti
- Department of Chemistry, Johns Hopkins University, 21218, Baltimore, MD, USA
| | - Sikao Guo
- T. C. Jenkins Department of Biophysics, Johns Hopkins University, 21218, Baltimore, MD, USA
| | - Margaret E Johnson
- T. C. Jenkins Department of Biophysics, Johns Hopkins University, 21218, Baltimore, MD, USA
| | - Stephen D Fried
- Department of Chemistry, Johns Hopkins University, 21218, Baltimore, MD, USA
- T. C. Jenkins Department of Biophysics, Johns Hopkins University, 21218, Baltimore, MD, USA
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4
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Durán-Rey D, Brito-Pereira R, Ribeiro C, Ribeiro S, Sánchez-Margallo JA, Crisóstomo V, Irastorza I, Silván U, Lanceros-Méndez S, Sánchez-Margallo FM. Development of Silk Fibroin Scaffolds for Vascular Repair. Biomacromolecules 2023; 24:1121-1130. [PMID: 36754364 PMCID: PMC10016106 DOI: 10.1021/acs.biomac.2c01124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 01/05/2023] [Indexed: 02/10/2023]
Abstract
Silk fibroin (SF) is a biocompatible natural protein with excellent mechanical characteristics. SF-based biomaterials can be structured using a number of techniques, allowing the tuning of materials for specific biomedical applications. In this study, SF films, porous membranes, and electrospun membranes were produced using solvent-casting, salt-leaching, and electrospinning methodologies, respectively. SF-based materials were subjected to physicochemical and biological characterizations to determine their suitability for tissue regeneration applications. Mechanical analysis showed stress-strain curves of brittle materials in films and porous membranes, while electrospun membranes featured stress-strain curves typical of ductile materials. All samples showed similar chemical composition, melting transition, hydrophobic behavior, and low cytotoxicity levels, regardless of their architecture. Finally, all of the SF-based materials promote the proliferation of human umbilical vein endothelial cells (HUVECs). These findings demonstrate the different relationship between HUVEC behavior and the SF sample's topography, which can be taken advantage of for the design of vascular implants.
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Affiliation(s)
- David Durán-Rey
- Jesús
Usón Minimally Invasive Surgery Centre, Cáceres 10004, Spain
| | - Ricardo Brito-Pereira
- CMEMS-UMinho, University of Minho, 4800-058 Guimarães, Portugal
- LABBELS-Associate
Laboratory, 4710-057 Braga/Guimarães, Portugal
- CF−UM-UP−Physics
Centre of Minho and Porto Universities and LaPMET−Laboratory
of Physics for Materials and Emergent Technologies, University of Minho, 4710-057 Braga, Portugal
- IB-S,
Institute of Science and Innovation for Bio-Sustainability, Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Clarisse Ribeiro
- CF−UM-UP−Physics
Centre of Minho and Porto Universities and LaPMET−Laboratory
of Physics for Materials and Emergent Technologies, University of Minho, 4710-057 Braga, Portugal
| | - Sylvie Ribeiro
- CF−UM-UP−Physics
Centre of Minho and Porto Universities and LaPMET−Laboratory
of Physics for Materials and Emergent Technologies, University of Minho, 4710-057 Braga, Portugal
| | - Juan A. Sánchez-Margallo
- Jesús
Usón Minimally Invasive Surgery Centre, Cáceres 10004, Spain
- RICORS-TERAV
Network, Instituto de Salud Carlos III, Madrid 28029, Spain
| | - Verónica Crisóstomo
- Jesús
Usón Minimally Invasive Surgery Centre, Cáceres 10004, Spain
- Centro
de
Investigación Biomédica en Red de Enfermedades Cardiovasculares
(CIBERCV), Instituto de Salud Carlos III, Madrid 28029, Spain
- RICORS-TERAV
Network, Instituto de Salud Carlos III, Madrid 28029, Spain
| | - Igor Irastorza
- CF−UM-UP−Physics
Centre of Minho and Porto Universities and LaPMET−Laboratory
of Physics for Materials and Emergent Technologies, University of Minho, 4710-057 Braga, Portugal
- Cell
Biology and Histology Department, Faculty
of Medicine, Leioa 48940, Spain
| | - Unai Silván
- BCMaterials,
Basque Center for Materials, Applications
and Nanostructures, UPV/EHU
Science Park, Leioa 48940, Spain
- Ikerbasque,
Basque Foundation for Science, Bilbao 48009, Spain
| | - Senentxu Lanceros-Méndez
- CF−UM-UP−Physics
Centre of Minho and Porto Universities and LaPMET−Laboratory
of Physics for Materials and Emergent Technologies, University of Minho, 4710-057 Braga, Portugal
- BCMaterials,
Basque Center for Materials, Applications
and Nanostructures, UPV/EHU
Science Park, Leioa 48940, Spain
- Ikerbasque,
Basque Foundation for Science, Bilbao 48009, Spain
| | - Francisco M. Sánchez-Margallo
- Jesús
Usón Minimally Invasive Surgery Centre, Cáceres 10004, Spain
- Centro
de
Investigación Biomédica en Red de Enfermedades Cardiovasculares
(CIBERCV), Instituto de Salud Carlos III, Madrid 28029, Spain
- RICORS-TERAV
Network, Instituto de Salud Carlos III, Madrid 28029, Spain
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5
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Hofmaier M, Malanin M, Bittrich E, Lentz S, Urban B, Scheibel T, Fery A, Müller M. β-Sheet Structure Formation within Binary Blends of Two Spider Silk Related Peptides. Biomacromolecules 2023; 24:825-840. [PMID: 36632028 DOI: 10.1021/acs.biomac.2c01266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Intrinsically disordered proteins (IDPs) play an important role in molecular biology and medicine because their induced folding can lead to so-called conformational diseases, where β-amyloids play an important role. Still, the molecular folding process into the different substructures, such as parallel/antiparallel or extended β-sheet/crossed β-sheet is not fully understood. The recombinant spider silk protein eADF4(Cx) consisting of repeating modules C, which are composed of a crystalline (pep-c) and an amorphous peptide sequence (pep-a), can be used as a model system for IDP since it can assemble into similar structures. In this work, blend films of the pep-c and pep-a sequences were investigated to modulate the β-sheet formation by varying the molar fraction of pep-c and pep-a. Dichroic Fourier-transform infrared spectroscopy (FTIR), circular dichroism, spectroscopic ellipsometry, atomic force microscopy, and IR nanospectroscopy were used to examine the secondary structure, the formation of parallel and antiparallel β-sheets, their orientation, and the microscopic roughness and phase formation within peptide blend films upon methanol post-treatment. New insights into the formation of filament-like structures in these silk blend films were obtained. Filament-like structures could be locally assigned to β-sheet-rich structures. Further, the antiparallel or parallel character and the orientation of the formed β-sheets could be clearly determined. Finally, the ideal ratio of pep-a and pep-c sequences found in the fibroin 4 of the major ampullate silk of spiders could also be rationalized by comparing the blend and spider silk protein systems.
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Affiliation(s)
- Mirjam Hofmaier
- Institute of Physical Chemistry and Polymer Physics, Leibniz Institute of Polymer Research Dresden (IPF), Hohe Strasse 6, D-01069Dresden, Germany.,Chair of Physical Chemistry of Polymeric Materials, Technical University Dresden (TUD), D-01069Dresden, Germany
| | - Mikhail Malanin
- Leibniz Institute of Polymer Research Dresden (IPF), Institute of Macromolecular Chemistry, Hohe Strasse 6, D-01069Dresden, Germany
| | - Eva Bittrich
- Leibniz Institute of Polymer Research Dresden (IPF), Institute of Macromolecular Chemistry, Hohe Strasse 6, D-01069Dresden, Germany
| | - Sarah Lentz
- Chair of Biomaterials, University of Bayreuth, Prof.-Rüdiger-Bormann-Str. 1, D-95447Bayreuth, Germany
| | - Birgit Urban
- Institute of Physical Chemistry and Polymer Physics, Leibniz Institute of Polymer Research Dresden (IPF), Hohe Strasse 6, D-01069Dresden, Germany
| | - Thomas Scheibel
- Chair of Biomaterials, University of Bayreuth, Prof.-Rüdiger-Bormann-Str. 1, D-95447Bayreuth, Germany.,Bayreuther Zentrum für Kolloide und Grenzflächen (BZKG), Universität Bayreuth, Universitätsstraße 30, D-95440Bayreuth, Germany.,Bayreuther Zentrum für Molekulare Biowissenschaften (BZMB), Universität Bayreuth, Universitätsstraße 30, D-95440Bayreuth, Germany.,Bayreuther Materialzentrum (BayMAT), Universität Bayreuth, Universitätsstraße 30, D-95440Bayreuth, Germany.,Bayerisches Polymerinstitut (BPI), Universität Bayreuth, Universitätsstraße 30, D-95440Bayreuth, Germany
| | - Andreas Fery
- Institute of Physical Chemistry and Polymer Physics, Leibniz Institute of Polymer Research Dresden (IPF), Hohe Strasse 6, D-01069Dresden, Germany.,Chair of Physical Chemistry of Polymeric Materials, Technical University Dresden (TUD), D-01069Dresden, Germany
| | - Martin Müller
- Institute of Physical Chemistry and Polymer Physics, Leibniz Institute of Polymer Research Dresden (IPF), Hohe Strasse 6, D-01069Dresden, Germany.,Chair of Macromolecular Chemistry, Technical University of Dresden (TUD), Mommsenstraße 4, D-01062Dresden, Germany
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6
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Liu Y, Wang Y, Tong C, Wei G, Ding F, Sun Y. Molecular Insights into the Self-Assembly of Block Copolymer Suckerin Polypeptides into Nanoconfined β-Sheets. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2202642. [PMID: 35901284 PMCID: PMC9420834 DOI: 10.1002/smll.202202642] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Revised: 06/27/2022] [Indexed: 06/15/2023]
Abstract
Suckerin in squid sucker ring teeth is a block-copolymer peptide comprised of two repeating modules-the alanine and histidine-rich M1 and the glycine-rich M2. Suckerin self-assemblies display excellent thermo-plasticity and pH-responsive properties, along with the high biocompatibility, biodegradability, and sustainability. However, the self-assembly mechanism and the detailed role of each module are still elusive, limiting the capability of applying and manipulating such biomaterials. Here, the self-assembly dynamics of the two modules and two minimalist suckerin-mimetic block-copolymers, M1-M2-M1 and M2-M1-M2, in silico is investigated. The simulation results demonstrate that M2 has a stronger self-association but weaker β-sheet propensities than M1. The high self-assembly propensity of M2 allows the minimalist block-copolymer peptides to coalesce with microphase separation, enabling the formation of nanoconfined β-sheets in the matrix formed by M1-M2 contacts. Since these glycine-rich fragments with scatted hydrophobic and aromatic residues are building blocks of many other block-copolymer peptides, the study suggests that these modules function as the "molecular glue" in addition to the flexible linker or spacer to drive the self-assembly and microphase separation. The uncovered molecular insights may help understand the structure and function of suckerin and also aid in the design of functional block-copolymer peptides for nanotechnology and biomedicine applications.
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Affiliation(s)
- Yuying Liu
- Department of Physics, Ningbo University, Ningbo 315211, China
| | - Ying Wang
- Department of Physics, Ningbo University, Ningbo 315211, China
| | - Chaohui Tong
- Department of Physics, Ningbo University, Ningbo 315211, China
| | - Guanghong Wei
- State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai 200433, China
| | - Feng Ding
- Department of Physics and Astronomy, Clemson University, Clemson, SC 29634, USA
| | - Yunxiang Sun
- Department of Physics, Ningbo University, Ningbo 315211, China
- State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai 200433, China
- Department of Physics and Astronomy, Clemson University, Clemson, SC 29634, USA
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7
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Wang Q, McArdle P, Wang SL, Wilmington RL, Xing Z, Greenwood A, Cotten ML, Qazilbash MM, Schniepp HC. Protein secondary structure in spider silk nanofibrils. Nat Commun 2022; 13:4329. [PMID: 35902573 PMCID: PMC9334623 DOI: 10.1038/s41467-022-31883-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Accepted: 07/01/2022] [Indexed: 11/09/2022] Open
Abstract
Nanofibrils play a pivotal role in spider silk and are responsible for many of the impressive properties of this unique natural material. However, little is known about the internal structure of these protein fibrils. We carry out polarized Raman and polarized Fourier-transform infrared spectroscopies on native spider silk nanofibrils and determine the concentrations of six distinct protein secondary structures, including β-sheets, and two types of helical structures, for which we also determine orientation distributions. Our advancements in peak assignments are in full agreement with the published silk vibrational spectroscopy literature. We further corroborate our findings with X-ray diffraction and magic-angle spinning nuclear magnetic resonance experiments. Based on the latter and on polypeptide Raman spectra, we assess the role of key amino acids in different secondary structures. For the recluse spider we develop a highly detailed structural model, featuring seven levels of structural hierarchy. The approaches we develop are directly applicable to other proteinaceous materials. Secondary fibril structure is a key component of the mechanical properties of protein materials like silk, yet, limited information is known about the internal structure of these protein fibrils. Here, the authors report on the use of polarised Raman and FTIR spectroscopy to study silk materials and identify six distinct secondary structures.
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Affiliation(s)
- Qijue Wang
- Department of Applied Science, William & Mary, P.O. Box 8795, Williamsburg, VA, 23187-8795, USA
| | - Patrick McArdle
- Department of Physics, William & Mary, P.O. Box 8795, Williamsburg, VA, 23187-8795, USA
| | - Stephanie L Wang
- Department of Physics, William & Mary, P.O. Box 8795, Williamsburg, VA, 23187-8795, USA
| | - Ryan L Wilmington
- Department of Physics, William & Mary, P.O. Box 8795, Williamsburg, VA, 23187-8795, USA
| | - Zhen Xing
- Department of Physics, William & Mary, P.O. Box 8795, Williamsburg, VA, 23187-8795, USA
| | - Alexander Greenwood
- Department of Applied Science, William & Mary, P.O. Box 8795, Williamsburg, VA, 23187-8795, USA
| | - Myriam L Cotten
- Department of Applied Science, William & Mary, P.O. Box 8795, Williamsburg, VA, 23187-8795, USA
| | - M Mumtaz Qazilbash
- Department of Physics, William & Mary, P.O. Box 8795, Williamsburg, VA, 23187-8795, USA
| | - Hannes C Schniepp
- Department of Applied Science, William & Mary, P.O. Box 8795, Williamsburg, VA, 23187-8795, USA.
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8
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Mohammadi P, Zemke F, Wagermaier W, Linder MB. Interfacial Crystallization and Supramolecular Self-Assembly of Spider Silk Inspired Protein at the Water-Air Interface. MATERIALS (BASEL, SWITZERLAND) 2021; 14:4239. [PMID: 34361434 PMCID: PMC8348448 DOI: 10.3390/ma14154239] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 07/26/2021] [Accepted: 07/27/2021] [Indexed: 11/21/2022]
Abstract
Macromolecular assembly into complex morphologies and architectural shapes is an area of fundamental research and technological innovation. In this work, we investigate the self-assembly process of recombinantly produced protein inspired by spider silk (spidroin). To elucidate the first steps of the assembly process, we examined highly concentrated and viscous pendant droplets of this protein in air. We show how the protein self-assembles and crystallizes at the water-air interface into a relatively thick and highly elastic skin. Using time-resolved in situ synchrotron x-ray scattering measurements during the drying process, we showed that the skin evolved to contain a high β-sheet amount over time. We also found that β-sheet formation strongly depended on protein concentration and relative humidity. These had a strong influence not only on the amount, but also on the ordering of these structures during the β-sheet formation process. We also showed how the skin around pendant droplets can serve as a reservoir for attaining liquid-liquid phase separation and coacervation from the dilute protein solution. Essentially, this study shows a new assembly route which could be optimized for the synthesis of new materials from a dilute protein solution and determine the properties of the final products.
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Affiliation(s)
- Pezhman Mohammadi
- VTT Technical Research Centre of Finland Ltd., FI-02044 Espoo, Finland
| | - Fabian Zemke
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, 14476 Potsdam, Germany; (F.Z.); (W.W.)
| | - Wolfgang Wagermaier
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, 14476 Potsdam, Germany; (F.Z.); (W.W.)
| | - Markus B. Linder
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, FI-02150 Espoo, Finland;
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9
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Protein-Engineered Polymers Functionalized with Antimicrobial Peptides for the Development of Active Surfaces. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11125352] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Antibacterial resistance is a major worldwide threat due to the increasing number of infections caused by antibiotic-resistant bacteria with medical devices being a major source of these infections. This suggests the need for new antimicrobial biomaterial designs able to withstand the increasing pressure of antimicrobial resistance. Recombinant protein polymers (rPPs) are an emerging class of nature-inspired biopolymers with unique chemical, physical and biological properties. These polymers can be functionalized with antimicrobial molecules utilizing recombinant DNA technology and then produced in microbial cell factories. In this work, we report the functionalization of rPBPs based on elastin and silk-elastin with different antimicrobial peptides (AMPs). These polymers were produced in Escherichia coli, successfully purified by employing non-chromatographic processes, and used for the production of free-standing films. The antimicrobial activity of the materials was evaluated against Gram-positive and Gram-negative bacteria, and results showed that the polymers demonstrated antimicrobial activity, pointing out the potential of these biopolymers for the development of new advanced antimicrobial materials.
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10
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Oguz O, Candau N, Stoclet G, Simsek E, Kosak Soz C, Yilgor E, Yilgor I, Menceloglu YZ. Geometric Confinement Controls Stiffness, Strength, Extensibility, and Toughness in Poly(urethane–urea) Copolymers. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c00596] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Oguzhan Oguz
- Faculty of Engineering and Natural Sciences, Materials Science and Nano Engineering, Sabanci University, 34956 Orhanli, Tuzla, Istanbul, Turkey
- Integrated Manufacturing Technologies Research and Application Center & Composite Technologies Center of Excellence, Sabanci University, Teknopark Istanbul, 34906 Pendik, Istanbul, Turkey
| | - Nicolas Candau
- Centre Català del Plàstic (CCP), Universitat Politècnica de Catalunya Barcelona Tech (EEBE-UPC), Av. D’Eduard Maristany, 16, Barcelona 08019, Spain
| | - Gregory Stoclet
- CNRS, INRAE, Centrale Lille, UMR 8207 - UMET - Unité Matériaux et Transformations, Univ. Lille, F-59000 Lille, France
| | - Eren Simsek
- Faculty of Engineering and Natural Sciences, Materials Science and Nano Engineering, Sabanci University, 34956 Orhanli, Tuzla, Istanbul, Turkey
| | - Cagla Kosak Soz
- KUYTAM Surface Science and Technology Center, Chemistry Department, Koc University, 34450 Sariyer, Istanbul, Turkey
| | - Emel Yilgor
- KUYTAM Surface Science and Technology Center, Chemistry Department, Koc University, 34450 Sariyer, Istanbul, Turkey
| | - Iskender Yilgor
- KUYTAM Surface Science and Technology Center, Chemistry Department, Koc University, 34450 Sariyer, Istanbul, Turkey
| | - Yusuf Z. Menceloglu
- Faculty of Engineering and Natural Sciences, Materials Science and Nano Engineering, Sabanci University, 34956 Orhanli, Tuzla, Istanbul, Turkey
- Integrated Manufacturing Technologies Research and Application Center & Composite Technologies Center of Excellence, Sabanci University, Teknopark Istanbul, 34906 Pendik, Istanbul, Turkey
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11
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Donets S, Guskova O, Sommer JU. Searching for Aquamelt Behavior among Silklike Biomimetics during Fibrillation under Flow. J Phys Chem B 2021; 125:3238-3250. [PMID: 33750140 DOI: 10.1021/acs.jpcb.1c00647] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
In this paper, we elucidate a generic mechanism behind strain-induced phase transition in aqueous solutions of silk-inspired biomimetics by atomistic molecular dynamics simulations. We show the results of modeling of homopeptides polyglycine Gly30 and polyalanine Ala30 and a heteropeptide (Gly-Ala-Gly-Ala-Gly-Ser)5, i.e., the simplest and yet relevant sequences that could mimic the behavior of natural silk under stress conditions. First, we analyze hydrophobicities of the sequences by calculating the Gibbs free energy of hydration and inspecting the interchain hydrogen bonding and hydration by water. Second, the force-extension profiles are scanned and compared with the results for poly(ethylene oxide), the synthetic polymer for which the aquamelt behavior has been proved recently. Additionally, the conformational transitions of oligopeptides from coiled to extended states are characterized by a generalized order parameter and by the dependence of the solvent-accessible surface area of the chains on applied stretching. Fibrillation itself is surveyed using both the two-dimensional interchain pair correlation function and the SAXS/WAXS patterns for the aggregates formed under stress. These are compared with experimental data found in the literature on fibril structure of silk composite materials doped with oligoalanine peptides. Our results show that tensile stress introduced into aqueous oligopeptide solutions facilitates interchain interactions. The oligopeptides display both a greater resistance to extension as compared to poly(ethylene oxide) and a reduced ability for hydrogen bonding of the stretched chains between oligomers and with water. Fiber formation is proved for all simulated objects, but the most structured one is made of a heteropeptide (Gly-Ala-Gly-Ala-Gly-Ser)5: For this sequence, we obtain the highest degree of the secondary structure motifs in the fiber. We conclude that this is the most promising candidate among considered sequences to find the aquamelt behavior in further experimental studies.
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Affiliation(s)
- Sergii Donets
- Institute Theory of Polymers, Leibniz Institute of Polymer Research Dresden, Hohe Str. 6, 01069 Dresden, Germany
| | - Olga Guskova
- Institute Theory of Polymers, Leibniz Institute of Polymer Research Dresden, Hohe Str. 6, 01069 Dresden, Germany.,Dresden Center for Computational Materials Science (DCMS), Technische Universität Dresden, 01062 Dresden, Germany
| | - Jens-Uwe Sommer
- Institute Theory of Polymers, Leibniz Institute of Polymer Research Dresden, Hohe Str. 6, 01069 Dresden, Germany.,Institute of Theoretical Physics, Technische Universität Dresden, Zellescher Weg 17, 01069 Dresden, Germany
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12
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Sonay AY, Kalyviotis K, Yaganoglu S, Unsal A, Konantz M, Teulon C, Lieberwirth I, Sieber S, Jiang S, Behzadi S, Crespy D, Landfester K, Roke S, Lengerke C, Pantazis P. Biodegradable Harmonophores for Targeted High-Resolution In Vivo Tumor Imaging. ACS NANO 2021; 15:4144-4154. [PMID: 33630589 PMCID: PMC8023799 DOI: 10.1021/acsnano.0c10634] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2020] [Accepted: 02/05/2021] [Indexed: 05/31/2023]
Abstract
Optical imaging probes have played a major role in detecting and monitoring a variety of diseases. In particular, nonlinear optical imaging probes, such as second harmonic generating (SHG) nanoprobes, hold great promise as clinical contrast agents, as they can be imaged with little background signal and unmatched long-term photostability. As their chemical composition often includes transition metals, the use of inorganic SHG nanoprobes can raise long-term health concerns. Ideally, contrast agents for biomedical applications should be degraded in vivo without any long-term toxicological consequences to the organism. Here, we developed biodegradable harmonophores (bioharmonophores) that consist of polymer-encapsulated, self-assembling peptides that generate a strong SHG signal. When functionalized with tumor cell surface markers, these reporters can target single cancer cells with high detection sensitivity in zebrafish embryos in vivo. Thus, bioharmonophores will enable an innovative approach to cancer treatment using targeted high-resolution optical imaging for diagnostics and therapy.
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Affiliation(s)
- Ali Yasin Sonay
- Department
of Biosystems Science and Engineering (D-BSSE), Eidgenössische Technische Hochschule (ETH) Zurich, 4058 Basel, Switzerland
| | - Konstantinos Kalyviotis
- Department
of Bioengineering, Imperial College London, South Kensington Campus, London SW7 2AZ, U.K.
| | - Sine Yaganoglu
- Department
of Biosystems Science and Engineering (D-BSSE), Eidgenössische Technische Hochschule (ETH) Zurich, 4058 Basel, Switzerland
| | - Aysen Unsal
- Department
of Bioengineering, Imperial College London, South Kensington Campus, London SW7 2AZ, U.K.
| | - Martina Konantz
- Department
of Biomedicine, University Hospital Basel
and University of Basel, 4031 Basel, Switzerland
| | - Claire Teulon
- Laboratory
for Fundamental BioPhotonics, Institute of Bioengineering, School
of Engineering, École Polytechnique
Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | | | - Sandro Sieber
- Division
of Pharmaceutical Technology, Department of Pharmaceutical Sciences, University of Basel, 4031 Basel, Switzerland
| | - Shuai Jiang
- Max
Planck Institute for Polymer Research, 55128 Mainz, Germany
| | - Shahed Behzadi
- Max
Planck Institute for Polymer Research, 55128 Mainz, Germany
| | - Daniel Crespy
- Max
Planck Institute for Polymer Research, 55128 Mainz, Germany
- Department
of Materials Science and Engineering, School of Molecular Science
and Engineering, Vidyasirimedhi Institute
of Science and Technology (VISTEC), Rayong 21210, Thailand
| | | | - Sylvie Roke
- Laboratory
for Fundamental BioPhotonics, Institute of Bioengineering, School
of Engineering, École Polytechnique
Fédérale de Lausanne, 1015 Lausanne, Switzerland
- Institute
of Materials Science and Engineering, School of Engineering, École Polytechnique Fédérale
de Lausanne, 1015 Lausanne, Switzerland
- Lausanne
Centre for Ultrafast Science, École
Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - Claudia Lengerke
- Department
of Biomedicine, University Hospital Basel
and University of Basel, 4031 Basel, Switzerland
- Division
of Hematology, University Hospital Basel, 4031 Basel, Switzerland
| | - Periklis Pantazis
- Department
of Biosystems Science and Engineering (D-BSSE), Eidgenössische Technische Hochschule (ETH) Zurich, 4058 Basel, Switzerland
- Department
of Bioengineering, Imperial College London, South Kensington Campus, London SW7 2AZ, U.K.
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13
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Effects of high hydrostatic pressure (HHP) on protein structure and digestibility of red abalone (Haliotis rufescens) muscle. INNOV FOOD SCI EMERG 2020. [DOI: 10.1016/j.ifset.2019.102282] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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14
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Heat-induced changes in microstructure of spray-dried plant protein isolates and its implications on in vitro gastric digestion. Lebensm Wiss Technol 2020. [DOI: 10.1016/j.lwt.2019.108795] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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15
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Reizabal A, Correia DM, Costa CM, Perez-Alvarez L, Vilas-Vilela JL, Lanceros-Méndez S. Silk Fibroin Bending Actuators as an Approach Toward Natural Polymer Based Active Materials. ACS APPLIED MATERIALS & INTERFACES 2019; 11:30197-30206. [PMID: 31330104 DOI: 10.1021/acsami.9b07533] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
This work reports on the development of ionic liquid (IL)/silk fibroin (SF) composite films as electroactive polymers actuators. Different contents (20, 40, and 60% wt) of 1-butyl-3-methylimidazolium tricyanomethanide ([Bmim][C(CN3)]) and choline dihydrogen phosphate ([Ch][DHP]) ILs were incorporated into the SF polymer matrix. Due to IL-SF interactions, morphological changes such as globule-like nanostructures are induced in the samples. High concentrations of IL promote SF β-sheet formation above 65%. Further, an increase in the thermal stability of the SF was observed through the incorporation of [Bmim][C(CN3)]. IL type and content allow tuning of the electrical response as well as achieving bending actuation. [Bmim][C(CN3)]/SF samples allow bending responses up to 0.5 at an applied voltage of 3 V. In conclusion, this work demonstrates the ability of IL/SF composites to act as electroactive polymer actuators and opens new perspectives in the application of natural resources for smart materials.
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Affiliation(s)
- Ander Reizabal
- BCMaterials, Basque Center for Materials, Applications and Nanostructures , UPV/EHU Science Park , 48940 Leioa , Spain
- Macromolecular Chemistry Research Group (LABQUIMAC), Department of Physical Chemistry, Faculty of Science and Technology , University of the Basque Country (UPV/EHU) , 48940 Leioa , Spain
| | - Daniela M Correia
- Department of Chemistry and CQ-VR , Universidade de Trás-os-Montes e Alto Douro , 5000-801 Vila Real , Portugal
- Center of Physics , University of Minho , 4710-058 Braga , Portugal
| | - Carlos M Costa
- Center of Physics , University of Minho , 4710-058 Braga , Portugal
- Center of Chemist , University of Minho , 4710-058 Braga , Portugal
| | - Leyre Perez-Alvarez
- BCMaterials, Basque Center for Materials, Applications and Nanostructures , UPV/EHU Science Park , 48940 Leioa , Spain
- Macromolecular Chemistry Research Group (LABQUIMAC), Department of Physical Chemistry, Faculty of Science and Technology , University of the Basque Country (UPV/EHU) , 48940 Leioa , Spain
| | - José L Vilas-Vilela
- BCMaterials, Basque Center for Materials, Applications and Nanostructures , UPV/EHU Science Park , 48940 Leioa , Spain
- Macromolecular Chemistry Research Group (LABQUIMAC), Department of Physical Chemistry, Faculty of Science and Technology , University of the Basque Country (UPV/EHU) , 48940 Leioa , Spain
| | - S Lanceros-Méndez
- BCMaterials, Basque Center for Materials, Applications and Nanostructures , UPV/EHU Science Park , 48940 Leioa , Spain
- Ikerbasque , Basque Foundation for Science , 48013 Bilbao , Spain
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16
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Tinajero‐Díaz E, Martínez de Ilarduya A, Muñoz‐Guerra S. Block and Graft Copolymers Made of 16‐Membered Macrolactones and
l
‐Alanine: A Comparative Study. MACROMOL CHEM PHYS 2019. [DOI: 10.1002/macp.201900214] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Ernesto Tinajero‐Díaz
- Dr. E. Tinajero‐Díaz, Dr. A. Martínez de Ilarduya, Prof. S. Muñoz‐Guerra Universitat Politècnica de Catalunya ETSEIB, Av. Diagonal 647 08028 Barcelona Spain
| | - Antxon Martínez de Ilarduya
- Dr. E. Tinajero‐Díaz, Dr. A. Martínez de Ilarduya, Prof. S. Muñoz‐Guerra Universitat Politècnica de Catalunya ETSEIB, Av. Diagonal 647 08028 Barcelona Spain
| | - Sebastián Muñoz‐Guerra
- Dr. E. Tinajero‐Díaz, Dr. A. Martínez de Ilarduya, Prof. S. Muñoz‐Guerra Universitat Politècnica de Catalunya ETSEIB, Av. Diagonal 647 08028 Barcelona Spain
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17
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Periodic introduction of aromatic units in polypeptides via chemoenzymatic polymerization to yield specific secondary structures with high thermal stability. Polym J 2019. [DOI: 10.1038/s41428-019-0242-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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18
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Reizabal A, Gonçalves S, Brito-Pereira R, Costa P, Costa CM, Pérez-Álvarez L, Vilas-Vilela JL, Lanceros-Méndez S. Optimized silk fibroin piezoresistive nanocomposites for pressure sensing applications based on natural polymers. NANOSCALE ADVANCES 2019; 1:2284-2292. [PMID: 36131973 PMCID: PMC9417311 DOI: 10.1039/c8na00417j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Accepted: 04/22/2019] [Indexed: 05/22/2023]
Abstract
Environmental issues promote the development of sensors based on natural polymers which are becoming an area of increasing interest. Piezoresistive sensors based on silk fibroin with carbon nanotubes (CNTs) as fillers were produced by solvent-casting in order to tune their electrical conductivity and electromechanical responses. It is shown that the carbonaceous fillers are well dispersed in the polymer matrix and the thermal and mechanical properties are independent of the CNT content. On the other hand, the inclusion of CNTs reduces the β-sheet content of silk fibroin and the electrical properties of the composite strongly depend on the filler content, the percolation threshold being around 1 wt% CNTs. The piezoresistive response demonstrates good reproducibility during cyclic loading without hysteresis with a piezoresistive sensitivity of ∼4 MPa-1, regardless of the CNT content. Overall, the results confirm that polymer composites based on natural polymers exhibit excellent piezoresistive responses, also demonstrated by the implementation and testing of a pressure sensor with the corresponding readout electronics. Thus, it is shown that natural polymers such as silk fibroin will allow the development of a new generation of multifunctional force and deformation sensors.
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Affiliation(s)
- Ander Reizabal
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park 48940 Leioa Spain
- Macromolecular Chemistry Research Group (LABQUIMAC), Dept. of Physical Chemistry, Faculty of Science and Technology, University of the Basque Country (UPV/EHU) Spain
| | - Sérgio Gonçalves
- Center of Physics, University of Minho 4710-058 Braga Portugal
- Centro ALGORITMI, University of Minho, Campus de Azurém 4800-058 Guimarães Portugal
- EngageLab, University of Minho 4810-453 Guimarães Portugal
| | | | - Pedro Costa
- Center of Physics, University of Minho 4710-058 Braga Portugal
- Institute for Polymers and Composites IPC/i3N, University of Minho 4800-058 Guimarães Portugal
| | - Carlos M Costa
- Center of Physics, University of Minho 4710-058 Braga Portugal
- Center of Chemistry, University of Minho 4710-058 Braga Portugal
| | - Leyre Pérez-Álvarez
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park 48940 Leioa Spain
- Macromolecular Chemistry Research Group (LABQUIMAC), Dept. of Physical Chemistry, Faculty of Science and Technology, University of the Basque Country (UPV/EHU) Spain
| | - Jose Luis Vilas-Vilela
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park 48940 Leioa Spain
- Macromolecular Chemistry Research Group (LABQUIMAC), Dept. of Physical Chemistry, Faculty of Science and Technology, University of the Basque Country (UPV/EHU) Spain
| | - Senentxu Lanceros-Méndez
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park 48940 Leioa Spain
- Ikerbasque, Basque Foundation for Science 48013 Bilbao Spain
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19
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Nanostructured, Self-Assembled Spider Silk Materials for Biomedical Applications. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1174:187-221. [PMID: 31713200 DOI: 10.1007/978-981-13-9791-2_6] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The extraordinary mechanical properties of spider silk fibers result from the interplay of composition, structure and self-assembly of spider silk proteins (spidroins). Genetic approaches enabled the biotechnological production of recombinant spidroins which have been employed to unravel the self-assembly and spinning process. Various processing conditions allowed to explore non-natural morphologies including nanofibrils, particles, capsules, hydrogels, films or foams. Recombinant spider silk proteins and materials made thereof can be utilized for biomedical applications, such as drug delivery, tissue engineering or 3D-biomanufacturing.
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20
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Holland C, Numata K, Rnjak‐Kovacina J, Seib FP. The Biomedical Use of Silk: Past, Present, Future. Adv Healthc Mater 2019; 8:e1800465. [PMID: 30238637 DOI: 10.1002/adhm.201800465] [Citation(s) in RCA: 381] [Impact Index Per Article: 76.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2018] [Revised: 08/04/2018] [Indexed: 11/07/2022]
Abstract
Humans have long appreciated silk for its lustrous appeal and remarkable physical properties, yet as the mysteries of silk are unraveled, it becomes clear that this outstanding biopolymer is more than a high-tech fiber. This progress report provides a critical but detailed insight into the biomedical use of silk. This journey begins with a historical perspective of silk and its uses, including the long-standing desire to reverse engineer silk. Selected silk structure-function relationships are then examined to appreciate past and current silk challenges. From this, biocompatibility and biodegradation are reviewed with a specific focus of silk performance in humans. The current clinical uses of silk (e.g., sutures, surgical meshes, and fabrics) are discussed, as well as clinical trials (e.g., wound healing, tissue engineering) and emerging biomedical applications of silk across selected formats, such as silk solution, films, scaffolds, electrospun materials, hydrogels, and particles. The journey finishes with a look at the roadmap of next-generation recombinant silks, especially the development pipeline of this new industry for clinical use.
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Affiliation(s)
- Chris Holland
- Department of Materials Science and Engineering The University of Sheffield Sir Robert Hadfield Building, Mappin Street Sheffield South Yorkshire S1 3JD UK
| | - Keiji Numata
- Biomacromolecules Research Team RIKEN Center for Sustainable Resource Science 2‐1 Hirosawa Wako Saitama 351‐0198 Japan
| | - Jelena Rnjak‐Kovacina
- Graduate School of Biomedical Engineering The University of New South Wales Sydney NSW 2052 Australia
| | - F. Philipp Seib
- Leibniz Institute of Polymer Research Dresden Max Bergmann Center of Biomaterials Dresden Dresden 01069 Germany
- Strathclyde Institute of Pharmacy and Biomedical Sciences University of Strathclyde Glasgow G4 0RE UK
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21
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Muiznieks LD, Sharpe S, Pomès R, Keeley FW. Role of Liquid–Liquid Phase Separation in Assembly of Elastin and Other Extracellular Matrix Proteins. J Mol Biol 2018; 430:4741-4753. [DOI: 10.1016/j.jmb.2018.06.010] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 05/29/2018] [Accepted: 06/01/2018] [Indexed: 10/14/2022]
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22
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Tinoco A, Gonçalves J, Silva C, Loureiro A, Gomes AC, Cavaco-Paulo A, Ribeiro A. Keratin-based particles for protection and restoration of hair properties. Int J Cosmet Sci 2018; 40:408-419. [DOI: 10.1111/ics.12483] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Accepted: 07/23/2018] [Indexed: 01/17/2023]
Affiliation(s)
- A. Tinoco
- CEB-Centre of Biological Engineering; University of Minho; Campus of Gualtar 4710-057 Braga Portugal
| | - J. Gonçalves
- CEB-Centre of Biological Engineering; University of Minho; Campus of Gualtar 4710-057 Braga Portugal
| | - C. Silva
- CEB-Centre of Biological Engineering; University of Minho; Campus of Gualtar 4710-057 Braga Portugal
| | - A. Loureiro
- CEB-Centre of Biological Engineering; University of Minho; Campus of Gualtar 4710-057 Braga Portugal
| | - A. C. Gomes
- Centre of Molecular and Environmental Biology (CBMA); Department of Biology; University of Minho; Campus of Gualtar 4710-057 Braga Portugal
| | - A. Cavaco-Paulo
- CEB-Centre of Biological Engineering; University of Minho; Campus of Gualtar 4710-057 Braga Portugal
| | - A. Ribeiro
- CEB-Centre of Biological Engineering; University of Minho; Campus of Gualtar 4710-057 Braga Portugal
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23
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Zhou Z, Zhang S, Cao Y, Marelli B, Xia X, Tao TH. Engineering the Future of Silk Materials through Advanced Manufacturing. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1706983. [PMID: 29956397 DOI: 10.1002/adma.201706983] [Citation(s) in RCA: 76] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Revised: 02/19/2018] [Indexed: 05/05/2023]
Abstract
Silk is a natural fiber renowned for its outstanding mechanical properties that have enabled the manufacturing of ultralight and ultrastrong textiles. Recent advances in silk processing and manufacturing have underpinned a re-interpretation of silk from textiles to technological materials. Here, it is argued that silk materials-optimized by selective pressure to work in the environment at the biotic-abiotic interface-can be harnessed by human micro- and nanomanufacturing technology to impart new functionalities and opportunities. A critical overview of recent progress in silk technology is presented with emphasis on high-tech applications enabled by recent innovations in multilevel modifications, multiscale manufacturing, and multimodal characterization of silk materials. These advances have enabled successful demonstrations of silk materials across several disciplines, including tissue engineering, drug delivery, implantable medical devices, and biodissolvable/degradable devices.
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Affiliation(s)
- Zhitao Zhou
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, 200050, China
- School of Graduate Study, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Shaoqing Zhang
- Department of Mechanical Engineering, the University of Texas at Austin, Austin, TX, 78712, USA
| | - Yunteng Cao
- Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139-4307, USA
| | - Benedetto Marelli
- Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139-4307, USA
| | - Xiaoxia Xia
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Tiger H Tao
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, 200050, China
- School of Graduate Study, University of Chinese Academy of Sciences, Beijing, 100049, China
- Department of Mechanical Engineering, the University of Texas at Austin, Austin, TX, 78712, USA
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24
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Tsuchiya K, Numata K. Chemoenzymatic synthesis of polypeptides containing the unnatural amino acid 2-aminoisobutyric acid. Chem Commun (Camb) 2018; 53:7318-7321. [PMID: 28485427 DOI: 10.1039/c7cc03095a] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Polypeptides containing 2-aminoisobutyric acid (Aib) units as an unnatural amino acid residue were synthesized by papain-catalyzed chemoenzymatic polymerization of a tripeptide ethyl ester l-Ala-Aib-l-Ala-OEt in an aqueous medium. The Aib-containing polypeptide adopted an α-helix conformation in both the solid and solution phases, which was induced by the periodic Aib residue.
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Affiliation(s)
- Kousuke Tsuchiya
- Enzyme Research Team, Biomass Engineering Research Division, RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
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25
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Tsuchiya K, Ishii T, Masunaga H, Numata K. Spider dragline silk composite films doped with linear and telechelic polyalanine: Effect of polyalanine on the structure and mechanical properties. Sci Rep 2018; 8:3654. [PMID: 29483536 PMCID: PMC5827030 DOI: 10.1038/s41598-018-21970-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Accepted: 02/13/2018] [Indexed: 12/14/2022] Open
Abstract
Spider dragline silks have attracted intensive attention as eco-friendly tough materials because of their excellent mechanical property and biomass-based origin. Composite films based on a recombinant spider dragline silk protein (ADF3) from Araneus diadematus were prepared by doping with linear or telechelic poly(L-alanine) (L- or T-polyA, respectively) as a reinforcing agent. Higher tensile strength and toughness of the composite films were achieved with the addition of polyA compared with the tensile strength and toughness of the silk-only film. The difference in the reinforcing behavior between L- and T-polyA was associated with their primary structures, which were revealed by wide angle X-ray diffraction analysis. L-polyA showed a tendency to aggregate in the composite films and induce crystallization of the inherent silk β-sheet to afford rigid but brittle films. By contrast, T-polyA dispersion in the composite films led to the formation of β-sheet crystal of both T-polyA and the inherent silk, which imparted high strength and toughness to the silk films.
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Affiliation(s)
- Kousuke Tsuchiya
- Enzyme Research Team, RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako-shi, Saitama, 351-0198, Japan.
| | - Takaoki Ishii
- Enzyme Research Team, RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako-shi, Saitama, 351-0198, Japan
| | - Hiroyasu Masunaga
- Japan Synchrotron Radiation Research Institute, 1-1-1, Kouto, Sayo-cho, Sayo-gun, Hyogo, 679-5198, Japan
| | - Keiji Numata
- Enzyme Research Team, RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako-shi, Saitama, 351-0198, Japan.
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26
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Jastrzebska K, Florczak A, Kucharczyk K, Lin Y, Wang Q, Mackiewicz A, Kaplan DL, Dams-Kozlowska H. Delivery of chemotherapeutics using spheres made of bioengineered spider silks derived from MaSp1 and MaSp2 proteins. Nanomedicine (Lond) 2018; 13:439-454. [PMID: 29338625 PMCID: PMC5810845 DOI: 10.2217/nnm-2017-0276] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Accepted: 12/11/2017] [Indexed: 01/16/2023] Open
Abstract
AIM Analysis of the properties and chemotherapeutics delivery potential of spheres made of bioengineered spider silks MS1 and MS2. MATERIALS & METHODS MS1 and MS2 derived from Nephila clavipes dragline silks - MaSp1 and MaSp2, respectively - formed spheres that were compared in terms of physicochemical properties, cytotoxicity and loading/release of chemotherapeutics. RESULTS MS2 spheres were more dispersed, smaller, of solid core, of higher beta-sheet structure content, and of opposite (negative) charge than MS1 spheres. Preloaded MS2 showed greater applicability for mitoxantrone, while postloaded for etoposide delivery compared with MS1 spheres. However, MS1 spheres were a better choice for doxorubicin delivery than MS2. CONCLUSION Bioengineered silks can be tailored to develop a system with optimal drug loading and release properties.
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Affiliation(s)
- Katarzyna Jastrzebska
- Chair of Medical Biotechnology, Poznan University of Medical Sciences, 61–688 Poznan, Poland
- NanoBioMedical Centre, Adam Mickiewicz University, 61–614 Poznan, Poland
| | - Anna Florczak
- Chair of Medical Biotechnology, Poznan University of Medical Sciences, 61–688 Poznan, Poland
- NanoBioMedical Centre, Adam Mickiewicz University, 61–614 Poznan, Poland
| | - Kamil Kucharczyk
- Chair of Medical Biotechnology, Poznan University of Medical Sciences, 61–688 Poznan, Poland
| | - Yinnan Lin
- Biomedical Engineering Department, Tufts University, Medford, MA 02155, USA
| | - Qin Wang
- Biomedical Engineering Department, Tufts University, Medford, MA 02155, USA
| | - Andrzej Mackiewicz
- Chair of Medical Biotechnology, Poznan University of Medical Sciences, 61–688 Poznan, Poland
- BioContract Sp. z o.o., 61-051 Poznan, Poland
- Department of Diagnostics & Cancer Immunology, Greater Poland Cancer Centre, 61–688 Poznan, Poland
| | - David L Kaplan
- Biomedical Engineering Department, Tufts University, Medford, MA 02155, USA
| | - Hanna Dams-Kozlowska
- Chair of Medical Biotechnology, Poznan University of Medical Sciences, 61–688 Poznan, Poland
- Department of Diagnostics & Cancer Immunology, Greater Poland Cancer Centre, 61–688 Poznan, Poland
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27
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Anton AM, Heidebrecht A, Mahmood N, Beiner M, Scheibel T, Kremer F. Foundation of the Outstanding Toughness in Biomimetic and Natural Spider Silk. Biomacromolecules 2017; 18:3954-3962. [DOI: 10.1021/acs.biomac.7b00990] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Arthur Markus Anton
- Peter
Debye Institute for Soft Matter Physics, Leipzig University, Linnéstr. 5, D-04103 Leipzig, Germany
| | - Aniela Heidebrecht
- Department
for Biomaterials, Faculty of Engineering Science, University of Bayreuth, Universitätsstr. 30, D-95440 Bayreuth, Germany
| | - Nasir Mahmood
- Institute
of Chemistry, Martin Luther University Halle Wittenberg, Heinrich-Damerow-Str.
4, D-06120 Halle
(Saale), Germany
| | - Mario Beiner
- Institute
of Chemistry, Martin Luther University Halle Wittenberg, Heinrich-Damerow-Str.
4, D-06120 Halle
(Saale), Germany
- Fraunhofer Institute for Microstructure of Materials and Systems IMWS, Walter Hülse Str. 1, D-06120 Halle (Saale), Germany
| | - Thomas Scheibel
- Department
for Biomaterials, Faculty of Engineering Science, University of Bayreuth, Universitätsstr. 30, D-95440 Bayreuth, Germany
- Research
Center for Bio Macromolecules (BIOmac), University of Bayreuth, Universitätsstr. 30, D-95440 Bayreuth, Germany
- Bayreuth
Center for Colloids and Interfaces (BZKG), University of Bayreuth, Universitätsstr. 30, D-95440 Bayreuth, Germany
- Bayreuth
Center for Molecular Biosciences (BZMB), University of Bayreuth, Universitätsstr. 30, D-95440 Bayreuth, Germany
- Bayreuth
Center for Material Science and Engineering (BayMAT), University of Bayreuth, Universitätsstr. 30, D-95440 Bayreuth, Germany
| | - Friedrich Kremer
- Peter
Debye Institute for Soft Matter Physics, Leipzig University, Linnéstr. 5, D-04103 Leipzig, Germany
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28
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Jacobsen MM, Tokareva OS, Ebrahimi D, Huang W, Ling S, Dinjaski N, Li D, Simon M, Staii C, Buehler MJ, Kaplan DL, Wong JY. Effect of Terminal Modification on the Molecular Assembly and Mechanical Properties of Protein-Based Block Copolymers. Macromol Biosci 2017; 17:10.1002/mabi.201700095. [PMID: 28665510 PMCID: PMC5600892 DOI: 10.1002/mabi.201700095] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Revised: 05/03/2017] [Indexed: 01/13/2023]
Abstract
Accurate prediction and validation of the assembly of bioinspired peptide sequences into fibers with defined mechanical characteristics would aid significantly in designing and creating materials with desired properties. This process may also be utilized to provide insight into how the molecular architecture of many natural protein fibers is assembled. In this work, computational modeling and experimentation are used in tandem to determine how peptide terminal modification affects a fiber-forming core domain. Modeling shows that increased terminal molecular weight and hydrophilicity improve peptide chain alignment under shearing conditions and promote consolidation of semicrystalline domains. Mechanical analysis shows acute improvements to strength and elasticity, but significantly reduced extensibility and overall toughness. These results highlight an important entropic function that terminal domains of fiber-forming peptides exhibit as chain alignment promoters, which ultimately has notable consequences on the mechanical behavior of the final fiber products.
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Affiliation(s)
- Matthew M Jacobsen
- Department of Biomedical Engineering, Boston University, Boston, MA, 02215, USA
| | - Olena S Tokareva
- Department of Biomedical Engineering, Tufts University, Medford, MA, 02155, USA
| | - Davoud Ebrahimi
- Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Wenwen Huang
- Department of Biomedical Engineering, Tufts University, Medford, MA, 02155, USA
| | - Shengjie Ling
- Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Nina Dinjaski
- Department of Biomedical Engineering, Tufts University, Medford, MA, 02155, USA
| | - David Li
- Department of Biomedical Engineering, Boston University, Boston, MA, 02215, USA
| | - Marc Simon
- Department of Physics and Astronomy, Center for Nanoscopic Physics, Tufts University, Medford, MA, 02155, USA
| | - Cristian Staii
- Department of Physics and Astronomy, Center for Nanoscopic Physics, Tufts University, Medford, MA, 02155, USA
| | - Markus J Buehler
- Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - David L Kaplan
- Department of Biomedical Engineering, Tufts University, Medford, MA, 02155, USA
| | - Joyce Y Wong
- Department of Biomedical Engineering, Boston University, Boston, MA, 02215, USA
- Division of Materials Science and Engineering, Boston University, Boston, MA, 02215, USA
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29
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Tsuchiya K, Numata K. Chemical Synthesis of Multiblock Copolypeptides Inspired by Spider Dragline Silk Proteins. ACS Macro Lett 2017; 6:103-106. [PMID: 35632900 DOI: 10.1021/acsmacrolett.7b00006] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Novel multiblock polypeptides with a structure similar to the unique sequence observed in spider silk proteins (spidroins) were synthesized via a two-step chemical synthesis method, that is, chemoenzymatic polymerization, using papain followed by postpolycondensation. Two types of polypeptide fragments were prepared by chemoenzymatic polymerization: polyalanine as a hard block, which forms β-sheets in the spider silk fibers, and poly(glycine-random-leucine) as a soft block. These two fragments were ligated by postpolycondensation using polyphosphoric acid as a condensing agent. Wide-angle X-ray diffraction (WAXD) and IR measurements revealed that the resulting multiblock polypeptides formed an antiparallel β-sheet structure with a degree of crystallinity similar to that of spider silk, which resulted in a fibrous morphology. This work provides the first example of a synthetic multiblock polypeptide mimicking the secondary structures of spider silk.
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Affiliation(s)
- Kousuke Tsuchiya
- Enzyme Research Team, RIKEN
Center for
Sustainable Resource Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Keiji Numata
- Enzyme Research Team, RIKEN
Center for
Sustainable Resource Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
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30
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Pereira AM, Machado R, da Costa A, Ribeiro A, Collins T, Gomes AC, Leonor IB, Kaplan DL, Reis RL, Casal M. Silk-based biomaterials functionalized with fibronectin type II promotes cell adhesion. Acta Biomater 2017; 47:50-59. [PMID: 27713086 DOI: 10.1016/j.actbio.2016.10.002] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Revised: 09/20/2016] [Accepted: 10/02/2016] [Indexed: 12/13/2022]
Abstract
The objective of this work was to exploit the fibronectin type II (FNII) module from human matrix metalloproteinase-2 as a functional domain for the development of silk-based biopolymer blends that display enhanced cell adhesion properties. The DNA sequence of spider dragline silk protein (6mer) was genetically fused with the FNII coding sequence and expressed in Escherichia coli. The chimeric protein 6mer+FNII was purified by non-chromatographic methods. Films prepared from 6mer+FNII by solvent casting promoted only limited cell adhesion of human skin fibroblasts. However, the performance of the material in terms of cell adhesion was significantly improved when 6mer+FNII was combined with a silk-elastin-like protein in a concentration-dependent behavior. With this work we describe a novel class of biopolymer that promote cell adhesion and potentially useful as biomaterials for tissue engineering and regenerative medicine. STATEMENT OF SIGNIFICANCE This work reports the development of biocompatible silk-based composites with enhanced cell adhesion properties suitable for biomedical applications in regenerative medicine. The biocomposites were produced by combining a genetically engineered silk-elastin-like protein with a genetically engineered spider-silk-based polypeptide carrying the three domains of the fibronectin type II module from human metalloproteinase-2. These composites were processed into free-standing films by solvent casting and characterized for their biological behavior. To our knowledge this is the first report of the exploitation of all three FNII domains as a functional domain for the development of bioinspired materials with improved biological performance. The present study highlights the potential of using genetically engineered protein-based composites as a platform for the development of new bioinspired biomaterials.
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31
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Muiznieks LD, Keeley FW. Biomechanical Design of Elastic Protein Biomaterials: A Balance of Protein Structure and Conformational Disorder. ACS Biomater Sci Eng 2016; 3:661-679. [DOI: 10.1021/acsbiomaterials.6b00469] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Lisa D. Muiznieks
- Molecular
Structure and Function Program, Research Institute, The Hospital for Sick Children, 686 Bay Street, Toronto, Ontario, Canada M5G 0A4
| | - Fred W. Keeley
- Molecular
Structure and Function Program, Research Institute, The Hospital for Sick Children, 686 Bay Street, Toronto, Ontario, Canada M5G 0A4
- Department
of Biochemistry and Department of Laboratory Medicine and Pathobiology, 1 King’s College Circle, University of Toronto, Toronto, Ontario, Canada M5S 1A8
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32
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Doblhofer E, Schmid J, Rieß M, Daab M, Suntinger M, Habel C, Bargel H, Hugenschmidt C, Rosenfeldt S, Breu J, Scheibel T. Structural Insights into Water-Based Spider Silk Protein-Nanoclay Composites with Excellent Gas and Water Vapor Barrier Properties. ACS APPLIED MATERIALS & INTERFACES 2016; 8:25535-25543. [PMID: 27603150 DOI: 10.1021/acsami.6b08287] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Nature reveals a great variety of inorganic-organic composite materials exhibiting good mechanical properties, high thermal and chemical stability, and good barrier properties. One class of natural bio-nanocomposites, e.g. found in mussel shells, comprises protein matrices with layered inorganic fillers. Inspired by such natural bio-nanocomposites, the cationic recombinant spider silk protein eADF4(κ16) was processed together with the synthetic layered silicate sodium hectorite in an all-aqueous setup. Drop-casting of this bio-nanocomposite resulted in a thermally and chemically stable film reflecting a one-dimensional crystal. Surprisingly, this bio-nanocomposite coating was, though produced in an all-aqueous process, completely water insoluble. Analyzing the structural details showed a low inner free volume due to the well-oriented self-assembly/alignment of the spider silk proteins on the nanoclay surface, yielding high oxygen and water vapor barrier properties. The here demonstrated properties in combination with good biocompatibility qualify this new bio-nanocomposite to be used in packaging applications.
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Affiliation(s)
| | | | | | | | | | | | | | - Christoph Hugenschmidt
- FRM II und Physik-Department E21, Technische Universität München , James-Franck-Straße 1, Garching D-85748, Germany
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33
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Tsuchiya K, Numata K. Papain-Catalyzed Chemoenzymatic Synthesis of Telechelic Polypeptides Using Bis(Leucine Ethyl Ester) Initiator. Macromol Biosci 2016; 16:1001-8. [DOI: 10.1002/mabi.201600005] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Revised: 01/27/2016] [Indexed: 11/09/2022]
Affiliation(s)
- Kousuke Tsuchiya
- Enzyme Research Team; Biomass Engineering Research Division; RIKEN Center for Sustainable Resource Science; 2-1 Hirosawa Wako, Saitama 351-0198 Japan
| | - Keiji Numata
- Enzyme Research Team; Biomass Engineering Research Division; RIKEN Center for Sustainable Resource Science; 2-1 Hirosawa Wako, Saitama 351-0198 Japan
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34
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Vanhalle M, Corneillie S, Smet M, Van Puyvelde P, Goderis B. Poly(alanine): Structure and Stability of the d and l-Enantiomers. Biomacromolecules 2015; 17:183-91. [DOI: 10.1021/acs.biomac.5b01301] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Maja Vanhalle
- Polymer
Chemistry and Materials, Department of Chemistry, KU Leuven, Celestijnenlaan
200F, Leuven, 3001, Belgium
| | - Stijn Corneillie
- Polymer
Chemistry and Materials, Department of Chemistry, KU Leuven, Celestijnenlaan
200F, Leuven, 3001, Belgium
| | - Mario Smet
- Polymer
Chemistry and Materials, Department of Chemistry, KU Leuven, Celestijnenlaan
200F, Leuven, 3001, Belgium
| | - Peter Van Puyvelde
- Soft
Matter, Applied Rheology and Technology, Department of Chemical Engineering, KU Leuven, Celestijnenlaan 200F, Leuven, 3001, Belgium
| | - Bart Goderis
- Polymer
Chemistry and Materials, Department of Chemistry, KU Leuven, Celestijnenlaan
200F, Leuven, 3001, Belgium
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35
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Ebrahimi D, Tokareva O, Rim NG, Wong JY, Kaplan DL, Buehler MJ. Silk-Its Mysteries, How It Is Made, and How It Is Used. ACS Biomater Sci Eng 2015; 1:864-876. [PMID: 27398402 PMCID: PMC4936833 DOI: 10.1021/acsbiomaterials.5b00152] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
This article reviews fundamental and applied aspects of silk-one of Nature's most intriguing materials in terms of its strength, toughness, and biological role-in its various forms, from protein molecules to webs and cocoons, in the context of mechanical and biological properties. A central question that will be explored is how the bridging of scales and the emergence of hierarchical structures are critical elements in achieving novel material properties, and how this knowledge can be explored in the design of synthetic materials. We review how the function of a material system at the macroscale can be derived from the interplay of fundamental molecular building blocks. Moreover, guidelines and approaches to current experimental and computational designs in the field of synthetic silklike materials are provided to assist the materials science community in engineering customized finetuned biomaterials for biomedical applications.
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Affiliation(s)
- Davoud Ebrahimi
- Laboratory for Atomistic and Molecular Mechanics, Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Olena Tokareva
- Laboratory for Atomistic and Molecular Mechanics, Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155, United States
| | - Nae Gyune Rim
- Department of Biomedical Engineering, Boston University, Boston, Massachusetts 02215, United States
| | - Joyce Y. Wong
- Department of Biomedical Engineering, Boston University, Boston, Massachusetts 02215, United States
- Division of Materials Science and Engineering, Boston University, Boston, Massachusetts 02215, United States
| | - David L. Kaplan
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155, United States
| | - Markus J. Buehler
- Laboratory for Atomistic and Molecular Mechanics, Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
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36
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To spin or not to spin: spider silk fibers and more. Appl Microbiol Biotechnol 2015; 99:9361-80. [DOI: 10.1007/s00253-015-6948-8] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2015] [Revised: 08/16/2015] [Accepted: 08/20/2015] [Indexed: 12/18/2022]
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37
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Lin S, Ryu S, Tokareva O, Gronau G, Jacobsen MM, Huang W, Rizzo DJ, Li D, Staii C, Pugno NM, Wong JY, Kaplan DL, Buehler MJ. Predictive modelling-based design and experiments for synthesis and spinning of bioinspired silk fibres. Nat Commun 2015; 6:6892. [PMID: 26017575 PMCID: PMC4996357 DOI: 10.1038/ncomms7892] [Citation(s) in RCA: 78] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2014] [Accepted: 03/10/2015] [Indexed: 11/08/2022] Open
Abstract
Scalable computational modelling tools are required to guide the rational design of complex hierarchical materials with predictable functions. Here, we utilize mesoscopic modelling, integrated with genetic block copolymer synthesis and bioinspired spinning process, to demonstrate de novo materials design that incorporates chemistry, processing and material characterization. We find that intermediate hydrophobic/hydrophilic block ratios observed in natural spider silks and longer chain lengths lead to outstanding silk fibre formation. This design by nature is based on the optimal combination of protein solubility, self-assembled aggregate size and polymer network topology. The original homogeneous network structure becomes heterogeneous after spinning, enhancing the anisotropic network connectivity along the shear flow direction. Extending beyond the classical polymer theory, with insights from the percolation network model, we illustrate the direct proportionality between network conductance and fibre Young's modulus. This integrated approach provides a general path towards de novo functional network materials with enhanced mechanical properties and beyond (optical, electrical or thermal) as we have experimentally verified.
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Affiliation(s)
- Shangchao Lin
- Laboratory for Atomistic and Molecular Mechanics (LAMM), Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
- Department of Mechanical Engineering, Materials Science and Engineering Program, Florida State University, Tallahassee, Florida 32310, USA
| | - Seunghwa Ryu
- Laboratory for Atomistic and Molecular Mechanics (LAMM), Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-338, Korea
| | - Olena Tokareva
- Laboratory for Atomistic and Molecular Mechanics (LAMM), Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155, USA
| | - Greta Gronau
- Laboratory for Atomistic and Molecular Mechanics (LAMM), Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
- Institute for Particle Technology, Technische Universitat Braunschweig, Braunschweig 38104, Germany
| | - Matthew M Jacobsen
- Department of Biomedical Engineering and Division of Materials Science and Engineering, Boston University, Boston, Massachusetts 02215, USA
| | - Wenwen Huang
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155, USA
| | - Daniel J Rizzo
- Department of Physics and Astronomy, Center for Nanoscopic Physics, Tufts University, Medford, Massachusetts 02155, USA
| | - David Li
- Department of Biomedical Engineering and Division of Materials Science and Engineering, Boston University, Boston, Massachusetts 02215, USA
| | - Cristian Staii
- Department of Physics and Astronomy, Center for Nanoscopic Physics, Tufts University, Medford, Massachusetts 02155, USA
| | - Nicola M Pugno
- Laboratory of Bio-Inspired and Graphene Nanomechanics, Department of Civil, Environmental and Mechanical Engineering, University of Trento, Via Mesiano 77, I-38123 Trento, Italy
- Centre for Materials and Microsystems, Fondazione Bruno Kessler, Via Sommarive 18, I-38123 Trento, Italy
- School of Engineering and Materials Science, Queen Mary University of London, Mile End Road, London E1 4NS, UK
| | - Joyce Y Wong
- Department of Biomedical Engineering and Division of Materials Science and Engineering, Boston University, Boston, Massachusetts 02215, USA
| | - David L Kaplan
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155, USA
| | - Markus J Buehler
- Laboratory for Atomistic and Molecular Mechanics (LAMM), Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
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38
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Ferreira AV, Volkov V, Abreu AS, Azoia N, Botelho CM, Cavaco‐Paulo A. Orange IV stabilizes silk fibroin microemulsions. Eng Life Sci 2015. [DOI: 10.1002/elsc.201400190] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Affiliation(s)
- Ana V. Ferreira
- Centre of Biological Engineering (CEB)University of Minho Braga Portugal
| | - Vadim Volkov
- Centre of Biological Engineering (CEB)University of Minho Braga Portugal
| | - Ana S. Abreu
- Centre of Biological Engineering (CEB)University of Minho Braga Portugal
| | - Nuno Azoia
- Centre of Biological Engineering (CEB)University of Minho Braga Portugal
| | - Cláudia M. Botelho
- Centre of Biological Engineering (CEB)University of Minho Braga Portugal
| | - Artur Cavaco‐Paulo
- Centre of Biological Engineering (CEB)University of Minho Braga Portugal
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39
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Zhou S, Huang W, Belton DJ, Simmons LO, Perry CC, Wang X, Kaplan DL. Control of silicification by genetically engineered fusion proteins: silk-silica binding peptides. Acta Biomater 2015; 15:173-80. [PMID: 25462851 DOI: 10.1016/j.actbio.2014.10.040] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2014] [Revised: 10/26/2014] [Accepted: 10/29/2014] [Indexed: 11/18/2022]
Abstract
In the present study, an artificial spider silk gene, 6mer, derived from the consensus sequence of Nephila clavipes dragline silk gene, was fused with different silica-binding peptides (SiBPs), A1, A3 and R5, to study the impact of the fusion protein sequence chemistry on silica formation and the ability to generate a silk-silica composite in two different bioinspired silicification systems: solution-solution and solution-solid. Condensed silica nanoscale particles (600-800 nm) were formed in the presence of the recombinant silk and chimeras, which were smaller than those formed by 15mer-SiBP chimeras, revealing that the molecular weight of the silk domain correlated to the sizes of the condensed silica particles in the solution system. In addition, the chimeras (6mer-A1/A3/R5) produced smaller condensed silica particles than the control (6mer), revealing that the silica particle size formed in the solution system is controlled by the size of protein assemblies in solution. In the solution-solid interface system, silicification reactions were performed on the surface of films fabricated from the recombinant silk proteins and chimeras and then treated to induce β-sheet formation. A higher density of condensed silica formed on the films containing the lowest β-sheet content while the films with the highest β-sheet content precipitated the lowest density of silica, revealing an inverse correlation between the β-sheet secondary structure and the silica content formed on the films. Intriguingly, the 6mer-A3 showed the highest rate of silica condensation but the lowest density of silica deposition on the films, compared with 6mer-A1 and -R5, revealing antagonistic crosstalk between the silk and the SiBP domains in terms of protein assembly. These findings offer a path forward in the tailoring of biopolymer-silica composites for biomaterial related needs.
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Affiliation(s)
- Shun Zhou
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, PR China; Department of Biomedical Engineering, Tufts University, Medford, MA 02155, USA
| | - Wenwen Huang
- Department of Biomedical Engineering, Tufts University, Medford, MA 02155, USA
| | - David J Belton
- Biomolecular and Materials Interface Research Group, Interdisciplinary Biomedical Research Centre, School of Science and Technology, Nottingham Trent University, Clifton Lane, Nottingham NG11 8NS, UK
| | - Leo O Simmons
- Department of Biochemistry and Molecular Biology, University of Massachusetts, Amherst, MA 01003, USA
| | - Carole C Perry
- Biomolecular and Materials Interface Research Group, Interdisciplinary Biomedical Research Centre, School of Science and Technology, Nottingham Trent University, Clifton Lane, Nottingham NG11 8NS, UK
| | - Xiaoqin Wang
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, PR China; Department of Biomedical Engineering, Tufts University, Medford, MA 02155, USA
| | - David L Kaplan
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, PR China; Department of Biomedical Engineering, Tufts University, Medford, MA 02155, USA.
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40
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Hardy JG, Amend MN, Geissler S, Lynch VM, Schmidt CE. Peptide-directed assembly of functional supramolecular polymers for biomedical applications: electroactive molecular tongue-twisters (oligoalanine–oligoaniline–oligoalanine) for electrochemically enhanced drug delivery. J Mater Chem B 2015; 3:5005-5009. [DOI: 10.1039/c5tb00106d] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report the preparation and characterization of films of electroactive supramolecular polymers based on non-electroactive oligoalanines and electroactive oligoanilines.
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Affiliation(s)
- John G. Hardy
- Department of Biomedical Engineering
- The University of Texas at Austin
- Austin
- USA
- J. Crayton Pruitt Family Department of Biomedical Engineering
| | - Megan N. Amend
- J. Crayton Pruitt Family Department of Biomedical Engineering
- University of Florida
- Gainesville
- USA
| | - Sydney Geissler
- Department of Biomedical Engineering
- The University of Texas at Austin
- Austin
- USA
- J. Crayton Pruitt Family Department of Biomedical Engineering
| | - Vincent M. Lynch
- Department of Chemistry
- The University of Texas at Austin
- Austin
- USA
| | - Christine E. Schmidt
- Department of Biomedical Engineering
- The University of Texas at Austin
- Austin
- USA
- J. Crayton Pruitt Family Department of Biomedical Engineering
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41
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Tokareva OS, Glettig DL, Abbott RD, Kaplan DL. Multifunctional spider silk polymers for gene delivery to human mesenchymal stem cells. J Biomed Mater Res B Appl Biomater 2014; 103:1390-401. [PMID: 25399785 DOI: 10.1002/jbm.b.33322] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2014] [Revised: 08/26/2014] [Accepted: 10/26/2014] [Indexed: 12/29/2022]
Abstract
Non-viral gene delivery systems are important transport vehicles that can be safe and effective alternatives to currently available viral systems. A new family of multifunctional spider silk-based gene carriers was bioengineered and found capable of targeting human mesenchymal stem cells (hMSCs). These carriers successfully delivered DNA to the nucleus of these mammalian cells. The presence of specific functional sequences in the recombinant proteins, such as a nuclear localization sequence (NLS) of the large tumor (T) antigen of the Simian virus 40 (SV40 ), an hMSC high affinity binding peptide (HAB), and a translocation motif (TLM) of the hepatitis-B virus surface protein (PreS2), and their roles in mitigation and enhancement of gene transfection efficiency towards hMSCs were characterized. The results demonstrate that these bioengineered spider silk proteins serve as effective carriers, without the well-known complications associated with viral delivery systems.
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Affiliation(s)
- Olena S Tokareva
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts, 02155
| | - Dean L Glettig
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts, 02155
| | - Rosalyn D Abbott
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts, 02155
| | - David L Kaplan
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts, 02155
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42
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Tucker CL, Jones JA, Bringhurst HN, Copeland CG, Addison JB, Weber WS, Mou Q, Yarger JL, Lewis RV. Mechanical and physical properties of recombinant spider silk films using organic and aqueous solvents. Biomacromolecules 2014; 15:3158-70. [PMID: 25030809 PMCID: PMC4130237 DOI: 10.1021/bm5007823] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
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Spider
silk has exceptional mechanical and biocompatibility properties.
The goal of this study was optimization of the mechanical properties
of synthetic spider silk thin films made from synthetic forms of MaSp1
and MaSp2, which compose the dragline silk of Nephila
clavipes. We increased the mechanical stress of MaSp1
and 2 films solubilized in both HFIP and water by adding glutaraldehyde
and then stretching them in an alcohol based stretch bath. This resulted
in stresses as high as 206 MPa and elongations up to 35%, which is
4× higher than the as-poured controls. Films were analyzed using
NMR, XRD, and Raman, which showed that the secondary structure after
solubilization and film formation in as-poured films is mainly a helical
conformation. After the post-pour stretch in a methanol/water bath,
the MaSp proteins in both the HFIP and water-based films formed aligned
β-sheets similar to those in spider silk fibers.
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Affiliation(s)
- Chauncey L Tucker
- Departments of †Biological Engineering and ‡Biology, Utah State University , Logan, Utah 84322, United States
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43
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Tokareva OS, Lin S, Jacobsen MM, Huang W, Rizzo D, Li D, Simon M, Staii C, Cebe P, Wong JY, Buehler MJ, Kaplan DL. Effect of sequence features on assembly of spider silk block copolymers. J Struct Biol 2014; 186:412-9. [PMID: 24613991 PMCID: PMC4040161 DOI: 10.1016/j.jsb.2014.03.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2013] [Revised: 03/01/2014] [Accepted: 03/03/2014] [Indexed: 11/29/2022]
Abstract
Bioengineered spider silk block copolymers were studied to understand the effect of protein chain length and sequence chemistry on the formation of secondary structure and materials assembly. Using a combination of in vitro protein design and assembly studies, we demonstrate that silk block copolymers possessing multiple repetitive units self-assemble into lamellar microstructures. Additionally, the study provides insights into the assembly behavior of spider silk block copolymers in concentrated salt solutions.
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Affiliation(s)
- Olena S Tokareva
- Department of Biomedical Engineering, Tufts University, Medford, MA 02155, USA
| | - Shangchao Lin
- Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Matthew M Jacobsen
- Department of Biomedical Engineering, Division of Materials Science and Engineering, Boston University, Boston, MA 02215, USA
| | - Wenwen Huang
- Department of Biomedical Engineering, Tufts University, Medford, MA 02155, USA; Department of Physics and Astronomy, Center for Nanoscopic Physics, Tufts University, Medford, MA 02155, USA
| | - Daniel Rizzo
- Department of Physics and Astronomy, Center for Nanoscopic Physics, Tufts University, Medford, MA 02155, USA
| | - David Li
- Department of Biomedical Engineering, Division of Materials Science and Engineering, Boston University, Boston, MA 02215, USA
| | - Marc Simon
- Department of Physics and Astronomy, Center for Nanoscopic Physics, Tufts University, Medford, MA 02155, USA
| | - Cristian Staii
- Department of Physics and Astronomy, Center for Nanoscopic Physics, Tufts University, Medford, MA 02155, USA
| | - Peggy Cebe
- Department of Physics and Astronomy, Center for Nanoscopic Physics, Tufts University, Medford, MA 02155, USA
| | - Joyce Y Wong
- Department of Biomedical Engineering, Division of Materials Science and Engineering, Boston University, Boston, MA 02215, USA
| | - Markus J Buehler
- Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - David L Kaplan
- Department of Biomedical Engineering, Tufts University, Medford, MA 02155, USA.
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44
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Humenik M, Magdeburg M, Scheibel T. Influence of repeat numbers on self-assembly rates of repetitive recombinant spider silk proteins. J Struct Biol 2014; 186:431-7. [DOI: 10.1016/j.jsb.2014.03.010] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2014] [Revised: 03/11/2014] [Accepted: 03/12/2014] [Indexed: 12/11/2022]
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45
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Krishnaji ST, Huang W, Cebe P, Kaplan DL. Influence of Solution Parameters on Phase Diagram of Recombinant Spider Silk-Like Block Copolymers. MACROMOL CHEM PHYS 2014. [DOI: 10.1002/macp.201400135] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Sreevidhya Tarakkad Krishnaji
- Department of Chemistry; Tufts University; Medford MA 02155 USA
- Department of Biomedical Engineering; Tufts University; Medford MA 02155 USA
| | - Wenwen Huang
- Department of Physics & Astronomy; Center for Nanoscopic Physics, Tufts University; Medford MA 02155 USA
| | - Peggy Cebe
- Department of Physics & Astronomy; Center for Nanoscopic Physics, Tufts University; Medford MA 02155 USA
| | - David L. Kaplan
- Department of Chemistry; Tufts University; Medford MA 02155 USA
- Department of Biomedical Engineering; Tufts University; Medford MA 02155 USA
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46
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Bacinello D, Garanger E, Taton D, Tam KC, Lecommandoux S. Enzyme-Degradable Self-Assembled Nanostructures from Polymer–Peptide Hybrids. Biomacromolecules 2014; 15:1882-8. [DOI: 10.1021/bm500296n] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Daniel Bacinello
- Université de Bordeaux, LCPO, UMR 5629, F-33600 Pessac, France
- CNRS, LCPO, UMR 5629, F-33600 Pessac, France
- Department
of Chemical Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo N2L 3G1, Canada
| | - Elisabeth Garanger
- Université de Bordeaux, LCPO, UMR 5629, F-33600 Pessac, France
- CNRS, LCPO, UMR 5629, F-33600 Pessac, France
- Institut Européen de Chimie et Biologie (IECB), F-33600 Pessac, France
| | - Daniel Taton
- Université de Bordeaux, LCPO, UMR 5629, F-33600 Pessac, France
- CNRS, LCPO, UMR 5629, F-33600 Pessac, France
| | - Kam Chiu Tam
- Department
of Chemical Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo N2L 3G1, Canada
| | - Sébastien Lecommandoux
- Université de Bordeaux, LCPO, UMR 5629, F-33600 Pessac, France
- CNRS, LCPO, UMR 5629, F-33600 Pessac, France
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47
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Addison JB, Weber WS, Mou Q, Ashton NN, Stewart RJ, Holland GP, Yarger JL. Reversible assembly of β-sheet nanocrystals within caddisfly silk. Biomacromolecules 2014; 15:1269-75. [PMID: 24576204 DOI: 10.1021/bm401822p] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Nuclear magnetic resonance (NMR) and X-ray diffraction (XRD) experiments reveal the structural importance of divalent cation-phosphate complexes in the formation of β-sheet nanocrystals from phosphorylated serine-rich regions within aquatic silk from caddisfly larvae of the species Hesperophyla consimilis. Wide angle XRD data on native caddisfly silk show that the silk contains a significant crystalline component with a repetitive orthorhombic unit cell aligned along the fiber axis with dimensions of 5.9 Å × 23.2 Å × 17.3 Å. These nanocrystalline domains depend on multivalent cations, which can be removed through chelation with ethylenediaminetetraacetic acid (EDTA). A comparison of wide angle X-ray diffraction data before and after EDTA treatment reveals that the integrated peak area of reflections corresponding to the nanocrystalline regions decreases by 15-25% while that of the amorphous background reflections increases by 20%, indicating a partial loss of crystallinity. (31)P solid-state NMR data on native caddisfly silk also show that the phosphorylated serine-rich motifs transform from a rigid environment to one that is highly mobile and water-solvated after treatment with EDTA. The removal of divalent cations through exchange and chelation has therefore caused a collapse of the β-sheet structure. However, NMR results show that the rigid phosphorus environment is mostly recovered after the silk is re-treated with calcium. The (31)P spin-lattice (T1) relaxation times were measured at 7.6 ± 3.1 and 1 ± 0.5 s for this calcium-recovered sample and the native silk sample, respectively. The shorter (31)P T1 relaxation times measured for the native silk sample are attributed to the presence of paramagnetic iron that is stripped away during EDTA chelation treatment and replaced with diamagnetic calcium.
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Affiliation(s)
- J Bennett Addison
- Department of Chemistry and Biochemistry, Arizona State University , Tempe, Arizona 85287-1604, United States
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48
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Yu Q, Xu S, Zhang H, Gu L, Xu Y, Ko F. Structure-property relationship of regenerated spider silk protein nano/microfibrous scaffold fabricated by electrospinning. J Biomed Mater Res A 2013; 102:3828-37. [DOI: 10.1002/jbm.a.35051] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2013] [Revised: 11/22/2013] [Accepted: 11/27/2013] [Indexed: 11/10/2022]
Affiliation(s)
- Qiaozhen Yu
- College of Materials and Textile Engineering, Zhejiang Experimental Center of Materials and Textile Engineering, Jiaxing University; Jiaxing Zhejiang 314001 People's Republic of China
| | - Shuiling Xu
- College of Medicine, Jiaxing Key Lab of Medical Molecular Biology, Jiaxing University; Jiaxing Zhejiang 314001 People's Republic of China
| | - Hong Zhang
- The first Affiliated Hospital of Chengdu Medical College; Chengdu Sicuan 610500 People's Republic of China
| | - Li Gu
- College of Materials and Textile Engineering, Zhejiang Experimental Center of Materials and Textile Engineering, Jiaxing University; Jiaxing Zhejiang 314001 People's Republic of China
| | - Yepei Xu
- College of Materials and Textile Engineering, Zhejiang Experimental Center of Materials and Textile Engineering, Jiaxing University; Jiaxing Zhejiang 314001 People's Republic of China
| | - Frank Ko
- Department of Materials Engineering; The University of British Columbia; Vancouver B.C. V6T 1Z4 Canada
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49
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Tokareva O, Michalczechen-Lacerda VA, Rech EL, Kaplan DL. Recombinant DNA production of spider silk proteins. Microb Biotechnol 2013; 6:651-63. [PMID: 24119078 PMCID: PMC3815454 DOI: 10.1111/1751-7915.12081] [Citation(s) in RCA: 105] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2013] [Revised: 07/31/2013] [Accepted: 08/01/2013] [Indexed: 11/27/2022] Open
Abstract
Spider dragline silk is considered to be the toughest biopolymer on Earth due to an extraordinary combination of strength and elasticity. Moreover, silks are biocompatible and biodegradable protein-based materials. Recent advances in genetic engineering make it possible to produce recombinant silks in heterologous hosts, opening up opportunities for large-scale production of recombinant silks for various biomedical and material science applications. We review the current strategies to produce recombinant spider silks.
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Affiliation(s)
- Olena Tokareva
- Department of Biomedical Engineering, Tufts UniversityMedford, MA, 02155, USA
| | - Valquíria A Michalczechen-Lacerda
- Department of Cell Biology, Campus Universitario Darcy Ribeiro, Institute of Biology, University of BrasiliaBrasilia, DF, 70910-900, Brazil
| | - Elíbio L Rech
- Embrapa Genetics Resources and Biotechnology, Biotechnology UnitParque Estação Biológica PqEB W5 Norte, Brasilia, 70770-900, DF, Brazil
| | - David L Kaplan
- Department of Biomedical Engineering, Tufts UniversityMedford, MA, 02155, USA
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50
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Tokareva O, Jacobsen M, Buehler M, Wong J, Kaplan DL. Structure-function-property-design interplay in biopolymers: spider silk. Acta Biomater 2013; 10:1612-26. [PMID: 23962644 DOI: 10.1016/j.actbio.2013.08.020] [Citation(s) in RCA: 146] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2013] [Revised: 08/06/2013] [Accepted: 08/12/2013] [Indexed: 11/17/2022]
Abstract
Spider silks have been a focus of research for almost two decades due to their outstanding mechanical and biophysical properties. Recent advances in genetic engineering have led to the synthesis of recombinant spider silks, thus helping to unravel a fundamental understanding of structure-function-property relationships. The relationships between molecular composition, secondary structures and mechanical properties found in different types of spider silks are described, along with a discussion of artificial spinning of these proteins and their bioapplications, including the role of silks in biomineralization and fabrication of biomaterials with controlled properties.
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Affiliation(s)
- Olena Tokareva
- Department of Biomedical Engineering, Tufts University, Medford, MA 02155, USA
| | - Matthew Jacobsen
- Department of Biomedical Engineering, Boston University, Boston, MA 02215, USA
| | - Markus Buehler
- Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Joyce Wong
- Department of Biomedical Engineering, Boston University, Boston, MA 02215, USA
| | - David L Kaplan
- Department of Biomedical Engineering, Tufts University, Medford, MA 02155, USA.
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