1
|
Qin J, Wang Y, Wang T, Wang N, Xu W, Cheng L, Yu W, Yan X, Gao L, Zheng B, Wu B. Anion-Coordination Foldamer-Based Polymer Network: from Molecular Spring to Elastomer. Angew Chem Int Ed Engl 2024; 63:e202400989. [PMID: 38623921 DOI: 10.1002/anie.202400989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Revised: 03/25/2024] [Accepted: 04/15/2024] [Indexed: 04/17/2024]
Abstract
Foldamer is a scaled-down version of coil spring, which can absorb and release energy by conformational change. Here, polymer networks with high density of molecular springs were developed by employing anion-coordination-based foldamers as the monomer. The coiling of the foldamer is controlled by oligo(urea) ligands coordinating to chloride ions; subsequently, the folding and unfolding of foldamer conformations endow the polymer network with excellent energy dissipation and toughness. The mechanical performance of the corresponding polymer networks shows a dramatic increase from P-L2UCl (non-folding), to P-L4UCl (a full turn), and then to P-L6UCl (1.5 turns), in terms of strength (2.62 MPa; 14.26 MPa; 22.93 MPa), elongation at break (70 %; 325 %; 352 %), Young's modulus (2.69 MPa; 63.61 MPa; 141.50 MPa), and toughness (1.12 MJ/m3; 21.39 MJ/m3; 49.62 MJ/m3), respectively, which is also better than those without anion centers and the non-foldamer based counterparts. Moreover, P-L6UCl shows enhanced strength and toughness than most of the molecular-spring based polymer networks. Thus, an effective strategy for designing high-performance anion-coordination-based materials is presented.
Collapse
Affiliation(s)
- Jiangping Qin
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, 710069, Xi'an, P. R. China
| | - Yongming Wang
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, 200240, Shanghai, P. R. China
| | - Tian Wang
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, 710069, Xi'an, P. R. China
| | - Na Wang
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, 710069, Xi'an, P. R. China
| | - Wenhua Xu
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, 710069, Xi'an, P. R. China
| | - Lin Cheng
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, 200240, Shanghai, P. R. China
| | - Wei Yu
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, 200240, Shanghai, P. R. China
| | - Xuzhou Yan
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, 200240, Shanghai, P. R. China
| | - Lingyan Gao
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, 710069, Xi'an, P. R. China
| | - Bo Zheng
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, 710069, Xi'an, P. R. China
| | - Biao Wu
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, 710069, Xi'an, P. R. China
- Key Laboratory of Medicinal Molecule Science and Pharmaceutics Engineering, Ministry of Industry and Information Technology, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, 100081, Beijing, P. R. China
| |
Collapse
|
2
|
Liu J, Wang Y, Huo F, He H. Ionic liquids inhibit the dynamic transition from α -helices to β -sheets in peptides. FUNDAMENTAL RESEARCH 2024; 4:777-784. [PMID: 39156578 PMCID: PMC11330114 DOI: 10.1016/j.fmre.2023.12.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 12/14/2023] [Accepted: 12/15/2023] [Indexed: 08/20/2024] Open
Abstract
Abnormalities in the transition between α-helices and β-sheets (α-β transition) may lead to devastating neurodegenerative diseases, such as Parkinson's syndrome and Alzheimer's disease. Ionic liquids (ILs) are potential drugs for targeted therapies against these diseases because of their excellent bioactivity and designability of ILs. However, the mechanism through which ILs regulate the α-β transition remains unclear. Herein, a combination of GPU-accelerated microsecond molecular dynamics simulations, correlation analysis, and machine learning was used to probe the dynamical α-β transition process induced by ILs of 1-alkyl-3-methylimidazolium chloride ([C n mim]Cl) and its molecular mechanism. Interestingly, the cation of [C n mim]+ in ILs can spontaneously insert into the peptides as free ions (n ≤ 10) and clusters (n ≥ 11). Such insertion can significantly inhibit the α-β, transition and the inhibiting ability for the clusters is more significant than that of free ions, where [C10mim]+ and [C12mim]+ can reduce the maximum β-sheet content of the peptide by 18.5% and 44.9%, respectively. Furthermore, the correlation analysis and machine learning method were used to develop a predictive model accounting for the influencing factors on the α-β transition, which could accurately predict the effect of ILs on the α-β transition. Overall, these quantitative results may not only deepen the understanding of the role of ILs in the α-β transition but also guide the development of the IL-based treatments for related diseases.
Collapse
Affiliation(s)
- Ju Liu
- Beijing Key Laboratory of Ionic Liquids Clean Process, State Key Laboratory of Mesoscience and Engineering, CAS Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yanlei Wang
- Beijing Key Laboratory of Ionic Liquids Clean Process, State Key Laboratory of Mesoscience and Engineering, CAS Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Feng Huo
- Beijing Key Laboratory of Ionic Liquids Clean Process, State Key Laboratory of Mesoscience and Engineering, CAS Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
- Longzihu New Energy Laboratory, Zhengzhou Institute of Emerging Industrial Technology, Henan University, Zhengzhou 450000, China
| | - Hongyan He
- Beijing Key Laboratory of Ionic Liquids Clean Process, State Key Laboratory of Mesoscience and Engineering, CAS Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| |
Collapse
|
3
|
Chen H, Sun Z, Lu K, Liu J, He C, Mao D. Negative Enthalpy Variation Drives Rapid Recovery in Thermoplastic Elastomer. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023:e2311332. [PMID: 38108494 DOI: 10.1002/adma.202311332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2023] [Revised: 12/12/2023] [Indexed: 12/19/2023]
Abstract
The mechanism behind the resilience of polymeric materials, typically attributed to the well-established entropy elasticity, often ignores the contribution of enthalpy variation (ΔH), because it is based on the assumption of an ideal chain. However, this model does not fully account for the reduced resilience of thermoplastic polyurethane (TPU) during long-range deformation, which is mainly caused by the dynamics of physical crosslink networks. Such reduction is undesirable for long-range stretchable TPU considering its wide application range. Therefore, a negative ΔH effect is established in this work to facilitate instant recovery in long-range stretchable TPU, achieved by constructing a reversible interim interface via strain-induced phase separation. Consequently, the newly constructed dual soft segmental TPU shows resilience efficiency exceeding 95%, surpassing many synthetic high-performance TPUs with typical efficiencies below 80%, and comparable to biomaterials. Moreover, a remarkable hysteresis loop with a ratio exceeding 50%, makes it a viable candidate for applications such as artificial ligaments or buffer belts. The research also clarifies structural factors influencing resilience, including the symmetry of the dual soft segments and the content of hard segments, offering valuable insights for the design of highly resilient long-range stretchable elastomers.
Collapse
Affiliation(s)
- Haiming Chen
- Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China
| | - Zaizheng Sun
- Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China
| | - Kai Lu
- Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China
- College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Jinming Liu
- Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China
- Department of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Chaobin He
- Department of Materials Science and Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore, 117575, Singapore
- Institute of Materials Research and Engineering, Agency for Science, Technology, and Research (A*STAR), 2 Fusionopolis Way, Innovis, Singapore, 138634, Singapore
| | - Dongsheng Mao
- Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China
| |
Collapse
|
4
|
Simmons M, Horbelt N, Sverko T, Scoppola E, Jackson DJ, Harrington MJ. Invasive mussels fashion silk-like byssus via mechanical processing of massive horizontally acquired coiled coils. Proc Natl Acad Sci U S A 2023; 120:e2311901120. [PMID: 37983489 PMCID: PMC10691215 DOI: 10.1073/pnas.2311901120] [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: 07/12/2023] [Accepted: 10/11/2023] [Indexed: 11/22/2023] Open
Abstract
Zebra and quagga mussels (Dreissena spp.) are invasive freshwater biofoulers that perpetrate devastating economic and ecological impact. Their success depends on their ability to anchor onto substrates with protein-based fibers known as byssal threads. Yet, compared to other mussel lineages, little is understood about the proteins comprising their fibers or their evolutionary history. Here, we investigated the hierarchical protein structure of Dreissenid byssal threads and the process by which they are fabricated. Unique among bivalves, we found that threads possess a predominantly β-sheet crystalline structure reminiscent of spider silk. Further analysis revealed unexpectedly that the Dreissenid thread protein precursors are mechanoresponsive α-helical proteins that are mechanically processed into β-crystallites during thread formation. Proteomic analysis of the byssus secretory organ and byssus fibers revealed a family of ultrahigh molecular weight (354 to 467 kDa) asparagine-rich (19 to 20%) protein precursors predicted to form α-helical coiled coils. Moreover, several independent lines of evidence indicate that the ancestral predecessor of these proteins was likely acquired via horizontal gene transfer. This chance evolutionary event that transpired at least 12 Mya has endowed Dreissenids with a distinctive and effective fiber formation mechanism, contributing significantly to their success as invasive species and possibly, inspiring new materials design.
Collapse
Affiliation(s)
- Miriam Simmons
- Department of Chemistry, McGill University, Montreal, QCH3A 0B8, Canada
| | - Nils Horbelt
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, Potsdam14476, Germany
| | - Tara Sverko
- Department of Chemistry, McGill University, Montreal, QCH3A 0B8, Canada
| | - Ernesto Scoppola
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, Potsdam14476, Germany
| | - Daniel J. Jackson
- Department of Geobiology, Geoscience Center, University of Göttingen, Göttingen37077, Germany
| | | |
Collapse
|
5
|
Miserez A, Yu J, Mohammadi P. Protein-Based Biological Materials: Molecular Design and Artificial Production. Chem Rev 2023; 123:2049-2111. [PMID: 36692900 PMCID: PMC9999432 DOI: 10.1021/acs.chemrev.2c00621] [Citation(s) in RCA: 23] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Polymeric materials produced from fossil fuels have been intimately linked to the development of industrial activities in the 20th century and, consequently, to the transformation of our way of living. While this has brought many benefits, the fabrication and disposal of these materials is bringing enormous sustainable challenges. Thus, materials that are produced in a more sustainable fashion and whose degradation products are harmless to the environment are urgently needed. Natural biopolymers─which can compete with and sometimes surpass the performance of synthetic polymers─provide a great source of inspiration. They are made of natural chemicals, under benign environmental conditions, and their degradation products are harmless. Before these materials can be synthetically replicated, it is essential to elucidate their chemical design and biofabrication. For protein-based materials, this means obtaining the complete sequences of the proteinaceous building blocks, a task that historically took decades of research. Thus, we start this review with a historical perspective on early efforts to obtain the primary sequences of load-bearing proteins, followed by the latest developments in sequencing and proteomic technologies that have greatly accelerated sequencing of extracellular proteins. Next, four main classes of protein materials are presented, namely fibrous materials, bioelastomers exhibiting high reversible deformability, hard bulk materials, and biological adhesives. In each class, we focus on the design at the primary and secondary structure levels and discuss their interplays with the mechanical response. We finally discuss earlier and the latest research to artificially produce protein-based materials using biotechnology and synthetic biology, including current developments by start-up companies to scale-up the production of proteinaceous materials in an economically viable manner.
Collapse
Affiliation(s)
- Ali Miserez
- Center for Sustainable Materials (SusMat), School of Materials Science and Engineering, Nanyang Technological University (NTU), Singapore637553.,School of Biological Sciences, NTU, Singapore637551
| | - Jing Yu
- Center for Sustainable Materials (SusMat), School of Materials Science and Engineering, Nanyang Technological University (NTU), Singapore637553.,Institute for Digital Molecular Analytics and Science (IDMxS), NTU, 50 Nanyang Avenue, Singapore637553
| | - Pezhman Mohammadi
- VTT Technical Research Centre of Finland Ltd., Espoo, UusimaaFI-02044, Finland
| |
Collapse
|
6
|
Tsirigoni AM, Goktas M, Atris Z, Valleriani A, Vila Verde A, Blank KG. Chain Sliding versus β-Sheet Formation upon Shearing Single α-Helical Coiled Coils. Macromol Biosci 2023; 23:e2200563. [PMID: 36861255 DOI: 10.1002/mabi.202200563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 02/20/2023] [Indexed: 03/03/2023]
Abstract
Coiled coils (CCs) are key building blocks of biogenic materials and determine their mechanical response to large deformations. Of particular interest is the observation that CC-based materials display a force-induced transition from α-helices to mechanically stronger β-sheets (αβT). Steered molecular dynamics simulations predict that this αβT requires a minimum, pulling speed-dependent CC length. Here, de novo designed CCs with a length between four to seven heptads are utilized to probe if the transition found in natural CCs can be mimicked with synthetic sequences. Using single-molecule force spectroscopy and molecular dynamics simulations, these CCs are mechanically loaded in shear geometry and their rupture forces and structural responses to the applied load are determined. Simulations at the highest pulling speed (0.01 nm ns-1 ) show the appearance of β-sheet structures for the five- and six-heptad CCs and a concomitant increase in mechanical strength. The αβT is less probable at a lower pulling speed of 0.001 nm ns-1 and is not observed in force spectroscopy experiments. For CCs loaded in shear geometry, the formation of β-sheets competes with interchain sliding. β-sheet formation is only possible in higher-order CC assemblies or in tensile-loading geometries where chain sliding and dissociation are prohibited.
Collapse
Affiliation(s)
- Anna-Maria Tsirigoni
- Max Planck Institute of Colloids and Interfaces, Mechano(bio)chemistry, Am Mühlenberg 1, 14476, Potsdam, Germany.,Max Planck Institute of Colloids and Interfaces, Department of Biomaterials, Am Mühlenberg 1, 14476, Potsdam, Germany
| | - Melis Goktas
- Max Planck Institute of Colloids and Interfaces, Mechano(bio)chemistry, Am Mühlenberg 1, 14476, Potsdam, Germany
| | - Zeynep Atris
- Max Planck Institute of Colloids and Interfaces, Mechano(bio)chemistry, Am Mühlenberg 1, 14476, Potsdam, Germany.,Max Planck Institute of Colloids and Interfaces, Department of Biomaterials, Am Mühlenberg 1, 14476, Potsdam, Germany
| | - Angelo Valleriani
- Max Planck Institute of Colloids and Interfaces, Department of Biomaterials, Am Mühlenberg 1, 14476, Potsdam, Germany
| | - Ana Vila Verde
- University of Duisburg-Essen, Faculty of Physics, Lotharstrasse 1, 47057, Duisburg, Germany
| | - Kerstin G Blank
- Max Planck Institute of Colloids and Interfaces, Mechano(bio)chemistry, Am Mühlenberg 1, 14476, Potsdam, Germany.,Johannes Kepler University Linz, Institute of Experimental Physics, Department of Biomolecular & Selforganizing Matter, Altenberger Strasse 69, Linz, 4040, Austria
| |
Collapse
|
7
|
Softening Effects in Biological Tissues and NiTi Knitwear during Cyclic Loading. MATERIALS 2021; 14:ma14216256. [PMID: 34771782 PMCID: PMC8585136 DOI: 10.3390/ma14216256] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 10/08/2021] [Accepted: 10/12/2021] [Indexed: 11/23/2022]
Abstract
Samples of skin, tendons, muscles, and knitwear composed of NiTi wire are studied by uniaxial cyclic tension and stretching to rupture. The metal knitted mesh behaves similar to a superelastic material when stretched, similar to soft biological tissues. The superelasticity effect was found in NiTi wire, but not in the mesh composed of it. A softening effect similar to biological tissues is observed during the cyclic stretching of the mesh. The mechanical behavior of the NiTi mesh is similar to the biomechanical behavior of biological tissues. The discovered superelastic effects allow developing criteria for the selection and evaluation of mesh materials composed of titanium nickelide for soft tissue reconstructive surgery.
Collapse
|
8
|
Soft-hard hybrid covalent-network polymer sponges with super resilience, recoverable energy dissipation and fatigue resistance under large deformation. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 126:112185. [PMID: 34082984 DOI: 10.1016/j.msec.2021.112185] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 05/03/2021] [Accepted: 05/12/2021] [Indexed: 11/20/2022]
Abstract
Energy absorption or dissipation ability has been widely developed in tough hydrogels and 3D nano-structured sponges for a variety of applications. However, fully recoverable energy dissipation and fatigue resistance under large deformation is still challenging yet highly desirable. Polymer network with homogeneous chemical crosslinking structures is an efficient way to construct hydrogels with high resilience and fatigue resistance. Unfortunately, such polymer network usually has poor energy dissipation capability. In this paper, we propose a new approach to build the ability of fully recoverable energy dissipation into covalent-crosslink polymer network by integrating soft and hard chains in a uniform crosslinking network and present the one-pot synthesis method for constructing corresponding polymer sponges by low-temperature phase-separation photopolymerization. The application of such polymer sponges as a tissue engineering scaffold, fabricated by using cyclic acetal units and PEG based monomers in particular is demonstrated. For the first time, we show the feasibility of building a synthetic scaffold with the characteristics of high porosity, super compressibility and resilience, fast recovery, completely recoverable energy dissipation, high fatigue resistance, biodegradability and biocompatibility. Such a scaffold is promising in tissue engineering especially in load-bearing applications.
Collapse
|
9
|
Cera L, Gonzalez GM, Liu Q, Choi S, Chantre CO, Lee J, Gabardi R, Choi MC, Shin K, Parker KK. A bioinspired and hierarchically structured shape-memory material. NATURE MATERIALS 2021; 20:242-249. [PMID: 32868876 DOI: 10.1038/s41563-020-0789-2] [Citation(s) in RCA: 54] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Accepted: 07/29/2020] [Indexed: 06/11/2023]
Abstract
Shape-memory polymeric materials lack long-range molecular order that enables more controlled and efficient actuation mechanisms. Here, we develop a hierarchical structured keratin-based system that has long-range molecular order and shape-memory properties in response to hydration. We explore the metastable reconfiguration of the keratin secondary structure, the transition from α-helix to β-sheet, as an actuation mechanism to design a high-strength shape-memory material that is biocompatible and processable through fibre spinning and three-dimensional (3D) printing. We extract keratin protofibrils from animal hair and subject them to shear stress to induce their self-organization into a nematic phase, which recapitulates the native hierarchical organization of the protein. This self-assembly process can be tuned to create materials with desired anisotropic structuring and responsiveness. Our combination of bottom-up assembly and top-down manufacturing allows for the scalable fabrication of strong and hierarchically structured shape-memory fibres and 3D-printed scaffolds with potential applications in bioengineering and smart textiles.
Collapse
Affiliation(s)
- Luca Cera
- Disease Biophysics Group, John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USA
| | - Grant M Gonzalez
- Disease Biophysics Group, John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USA
| | - Qihan Liu
- Disease Biophysics Group, John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USA
| | - Suji Choi
- Disease Biophysics Group, John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USA
| | - Christophe O Chantre
- Disease Biophysics Group, John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USA
| | - Juncheol Lee
- Department of Bio and Brain Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea
| | - Rudy Gabardi
- Disease Biophysics Group, John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USA
| | - Myung Chul Choi
- Department of Bio and Brain Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea
| | - Kwanwoo Shin
- Department of Chemistry and Institute of Biological Interfaces, Sogang University, Seoul, Korea
| | - Kevin Kit Parker
- Disease Biophysics Group, John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USA.
| |
Collapse
|
10
|
Mechano-responsive hydrogen-bonding array of thermoplastic polyurethane elastomer captures both strength and self-healing. Nat Commun 2021; 12:621. [PMID: 33504800 PMCID: PMC7841158 DOI: 10.1038/s41467-021-20931-z] [Citation(s) in RCA: 77] [Impact Index Per Article: 25.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Accepted: 12/24/2020] [Indexed: 11/29/2022] Open
Abstract
Self-repairable materials strive to emulate curable and resilient biological tissue; however, their performance is currently insufficient for commercialization purposes because mending and toughening are mutually exclusive. Herein, we report a carbonate-type thermoplastic polyurethane elastomer that self-heals at 35 °C and exhibits a tensile strength of 43 MPa; this elastomer is as strong as the soles used in footwear. Distinctively, it has abundant carbonyl groups in soft-segments and is fully amorphous with negligible phase separation due to poor hard-segment stacking. It operates in dual mechano-responsive mode through a reversible disorder-to-order transition of its hydrogen-bonding array; it heals when static and toughens when dynamic. In static mode, non-crystalline hard segments promote the dynamic exchange of disordered carbonyl hydrogen-bonds for self-healing. The amorphous phase forms stiff crystals when stretched through a transition that orders inter-chain hydrogen bonding. The phase and strain fully return to the pre-stressed state after release to repeat the healing process. Self-healing materials strive to emulate curable and resilient biological tissue but their performance is often insufficient for commercial applications because self-healing and toughening are mutually exclusive properties. Here, the authors report a tough and strong carbonate-type thermoplastic polyurethane elastomer that self-heals at ambient temperature.
Collapse
|
11
|
Batys P, Fedorov D, Mohammadi P, Lemetti L, Linder MB, Sammalkorpi M. Self-Assembly of Silk-like Protein into Nanoscale Bicontinuous Networks under Phase-Separation Conditions. Biomacromolecules 2021; 22:690-700. [PMID: 33406825 DOI: 10.1021/acs.biomac.0c01506] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Liquid-liquid phase separation of biomacromolecules is crucial in various inter- and extracellular biological functions. This includes formation of condensates to control, e.g., biochemical reactions and structural assembly. The same phenomenon is also found to be critically important in protein-based high-performance biological materials. Here, we use a well-characterized model triblock protein system to demonstrate the molecular level formation mechanism and structure of its condensate. Large-scale molecular modeling supported by analytical ultracentrifuge characterization combined with our earlier high magnification precision cryo-SEM microscopy imaging leads to deducing that the condensate has a bicontinuous network structure. The bicontinuous network rises from the proteins having a combination of sites with stronger mutual attraction and multiple weakly attractive regions connected by flexible, multiconfigurational linker regions. These attractive sites and regions behave as stickers of varying adhesion strength. For the examined model triblock protein construct, the β-sheet-rich end units are the stronger stickers, while additional weaker stickers, contributing to the condensation affinity, rise from spring-like connections in the flexible middle region of the protein. The combination of stronger and weaker sticker-like connections and the flexible regions between the stickers result in a versatile, liquid-like, self-healing structure. This structure also explains the high flexibility, easy deformability, and diffusion of the proteins, decreasing only 10-100 times in the bicontinuous network formed in the condensate phase in comparison to dilute protein solution. The here demonstrated structure and condensation mechanism of a model triblock protein construct via a combination of the stronger binding regions and the weaker, flexible sacrificial-bond-like network as well as its generalizability via polymer sticker models provide means to not only understand intracellular organization, regulation, and cellular function but also to identify direct control factors for and to enable engineering improved protein and polymer constructs to enhance control of advanced fiber materials, smart liquid biointerfaces, or self-healing matrices for pharmaceutics or bioengineering materials.
Collapse
Affiliation(s)
- Piotr Batys
- Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, PL-30239 Krakow, Poland.,Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, FI-00076 Aalto, Finland
| | - Dmitrii Fedorov
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, FI-00076 Aalto, Finland
| | - Pezhman Mohammadi
- VTT Technical Research Centre of Finland Ltd., FI-02044 Espoo, Finland
| | - Laura Lemetti
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, FI-00076 Aalto, Finland
| | - Markus B Linder
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, FI-00076 Aalto, Finland
| | - Maria Sammalkorpi
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, FI-00076 Aalto, Finland.,Department of Chemistry and Materials Science, School of Chemical Engineering, Aalto University, FI-00076 Aalto, Finland
| |
Collapse
|
12
|
Li Z, Wang J, Li X, Wang Y, Fan LJ, Yang S, Guo M, Li X, Tu Y. Supramolecular and Physically Double-Cross-Linked Network Strategy toward Strong and Tough Elastic Fibers. ACS Macro Lett 2020; 9:1655-1661. [PMID: 35617066 DOI: 10.1021/acsmacrolett.0c00579] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The strength and toughness are two trade-off properties of a material, yet Nature can achieve strong and tough materials by introducing sacrificial bonds into a system. Here, we present a four-component multiblock copolymer (mBCP) approach toward strong and tough elastic fibers, by introducing terpyridine moieties into poly(ether ester) mBCP elastomers. After coordination with Fe(II), supramolecular cross-links are formed within the physically cross-linked thermoplastic elastomers. The toughening elastic fibers with a double-cross-linked network structure show high tensile strength (ca. 300 MPa) and toughness (ca. 100 MJ m-3). In addition, they display excellent resilience with enhanced self-healing properties. Our strategy provides a promising way for the development of strong and tough elastomers by introducing metal-ligand sacrificial bonds into mBCPs elastomers.
Collapse
Affiliation(s)
- Zhikai Li
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Jiabin Wang
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Xiaohong Li
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Ying Wang
- Testing and Analysis Center, Soochow University, Suzhou 215123, China
| | - Li-Juan Fan
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Shuguang Yang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Center for Advanced Low-Dimension Materials, College of Material Science and Engineering, Donghua University, Shanghai 201620, China
| | - Mingyu Guo
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Xiaopeng Li
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, China
| | - Yingfeng Tu
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| |
Collapse
|
13
|
|
14
|
Tunn I, de Léon AS, Blank KG, Harrington MJ. Tuning coiled coil stability with histidine-metal coordination. NANOSCALE 2018; 10:22725-22729. [PMID: 30500033 DOI: 10.1039/c8nr07259k] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Coiled coils (CCs) have emerged as versatile building blocks for the synthesis of nanostructures, drug delivery systems and biomimetic hydrogels. Bioengineering metal coordination sites into the terminal ends of a synthetic coiled coil (CC), we generate a nanoscale biological building block with tunable stability. The reversible coordination of Ni2+ thermodynamically stabilizes the CC, as shown with circular dichroism spectroscopy. Using atomic force microscopy-based single-molecule force spectroscopy, it is further shown that Ni2+-binding reinforces the CC mechanically, increasing the barrier height for dissociation. When used as a dynamic crosslink in polyethyleneglycol-based hydrogels, the single-molecule stability of the CC is directly transferred to the bulk material and determines its viscoelastic properties. This reversibly tunable CC, thus, highlights an effective strategy for rationally engineering the single-molecule properties of biomolecular building blocks, which can be translated to the emergent properties of biomimetic materials, as well as other CC containing molecular assemblies.
Collapse
Affiliation(s)
- Isabell Tunn
- Max Planck Institute of Colloids and Interfaces, Science Park Potsdam-Golm, 14424 Potsdam, Germany.
| | | | | | | |
Collapse
|
15
|
Mohammadi P, Aranko AS, Lemetti L, Cenev Z, Zhou Q, Virtanen S, Landowski CP, Penttilä M, Fischer WJ, Wagermaier W, Linder MB. Phase transitions as intermediate steps in the formation of molecularly engineered protein fibers. Commun Biol 2018; 1:86. [PMID: 30271967 PMCID: PMC6123624 DOI: 10.1038/s42003-018-0090-y] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Accepted: 06/08/2018] [Indexed: 12/19/2022] Open
Abstract
A central concept in molecular bioscience is how structure formation at different length scales is achieved. Here we use spider silk protein as a model to design new recombinant proteins that assemble into fibers. We made proteins with a three-block architecture with folded globular domains at each terminus of a truncated repetitive silk sequence. Aqueous solutions of these engineered proteins undergo liquid-liquid phase separation as an essential pre-assembly step before fibers can form by drawing in air. We show that two different forms of phase separation occur depending on solution conditions, but only one form leads to fiber assembly. Structural variants with one-block or two-block architectures do not lead to fibers. Fibers show strong adhesion to surfaces and self-fusing properties when placed into contact with each other. Our results show a link between protein architecture and phase separation behavior suggesting a general approach for understanding protein assembly from dilute solutions into functional structures.
Collapse
Affiliation(s)
- Pezhman Mohammadi
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, 02150, Espoo, Finland.
| | - A Sesilja Aranko
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, 02150, Espoo, Finland
| | - Laura Lemetti
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, 02150, Espoo, Finland
| | - Zoran Cenev
- Department of Electrical Engineering and Automation, School of Electrical Engineering, Aalto University, 02150, Espoo, Finland
| | - Quan Zhou
- Department of Electrical Engineering and Automation, School of Electrical Engineering, Aalto University, 02150, Espoo, Finland
| | - Salla Virtanen
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, 02150, Espoo, Finland
| | | | - Merja Penttilä
- VTT Technical Research Centre of Finland Ltd., 02150, Espoo, Finland
| | | | - Wolfgang Wagermaier
- Department of Biomaterials, Max Planck Institute of Colloids and Interfaces, 14476, Potsdam, Germany
| | - Markus B Linder
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, 02150, Espoo, Finland.
| |
Collapse
|
16
|
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.
Collapse
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
| |
Collapse
|
17
|
Goktas M, Luo C, Sullan RMA, Bergues-Pupo AE, Lipowsky R, Vila Verde A, Blank KG. Molecular mechanics of coiled coils loaded in the shear geometry. Chem Sci 2018; 9:4610-4621. [PMID: 29899954 PMCID: PMC5969510 DOI: 10.1039/c8sc01037d] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2018] [Accepted: 04/19/2018] [Indexed: 01/25/2023] Open
Abstract
Coiled coils are important nanomechanical building blocks in biological and biomimetic materials. A mechanistic molecular understanding of their structural response to mechanical load is essential for elucidating their role in tissues and for utilizing and tuning these building blocks in materials applications. Using a combination of single-molecule force spectroscopy (SMFS) and steered molecular dynamics (SMD) simulations, we have investigated the mechanics of synthetic heterodimeric coiled coils of different length (3-4 heptads) when loaded in shear geometry. Upon shearing, we observe an initial rise in the force, which is followed by a constant force plateau and ultimately strand separation. The force required for strand separation depends on the coiled coil length and the applied loading rate, suggesting that coiled coil shearing occurs out of equilibrium. This out-of-equilibrium behaviour is determined by a complex structural response which involves helix uncoiling, uncoiling-assisted sliding of the helices relative to each other in the direction of the applied force as well as uncoiling-assisted dissociation perpendicular to the force axis. These processes follow a hierarchy of timescales with helix uncoiling being faster than sliding and sliding being faster than dissociation. In SMFS experiments, strand separation is dominated by uncoiling-assisted dissociation and occurs at forces between 25-45 pN for the shortest 3-heptad coiled coil and between 35-50 pN for the longest 4-heptad coiled coil. These values are highly similar to the forces required for shearing apart short double-stranded DNA oligonucleotides, reinforcing the potential role of coiled coils as nanomechanical building blocks in applications where protein-based structures are desired.
Collapse
Affiliation(s)
- Melis Goktas
- Max Planck Institute of Colloids and Interfaces , Mechano(bio)chemistry , Science Park Potsdam-Golm , 14424 Potsdam , Germany .
| | - Chuanfu Luo
- Max Planck Institute of Colloids and Interfaces , Department of Theory & Bio-Systems , Science Park Potsdam-Golm , 14424 Potsdam , Germany .
| | - Ruby May A Sullan
- Max Planck Institute of Colloids and Interfaces , Mechano(bio)chemistry , Science Park Potsdam-Golm , 14424 Potsdam , Germany .
| | - Ana E Bergues-Pupo
- Max Planck Institute of Colloids and Interfaces , Department of Theory & Bio-Systems , Science Park Potsdam-Golm , 14424 Potsdam , Germany .
| | - Reinhard Lipowsky
- Max Planck Institute of Colloids and Interfaces , Department of Theory & Bio-Systems , Science Park Potsdam-Golm , 14424 Potsdam , Germany .
| | - Ana Vila Verde
- Max Planck Institute of Colloids and Interfaces , Department of Theory & Bio-Systems , Science Park Potsdam-Golm , 14424 Potsdam , Germany .
| | - Kerstin G Blank
- Max Planck Institute of Colloids and Interfaces , Mechano(bio)chemistry , Science Park Potsdam-Golm , 14424 Potsdam , Germany .
| |
Collapse
|
18
|
Minin KA, Zhmurov A, Marx KA, Purohit PK, Barsegov V. Dynamic Transition from α-Helices to β-Sheets in Polypeptide Coiled-Coil Motifs. J Am Chem Soc 2017; 139:16168-16177. [PMID: 29043794 DOI: 10.1021/jacs.7b06883] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We carried out dynamic force manipulations in silico on a variety of coiled-coil protein fragments from myosin, chemotaxis receptor, vimentin, fibrin, and phenylalanine zippers that vary in size and topology of their α-helical packing. When stretched along the superhelical axis, all superhelices show elastic, plastic, and inelastic elongation regimes and undergo a dynamic transition from the α-helices to the β-sheets, which marks the onset of plastic deformation. Using the Abeyaratne-Knowles formulation of phase transitions, we developed a new theoretical methodology to model mechanical and kinetic properties of protein coiled-coils under mechanical nonequilibrium conditions and to map out their energy landscapes. The theory was successfully validated by comparing the simulated and theoretical force-strain spectra. We derived the scaling laws for the elastic force and the force for α-to-β transition, which can be used to understand natural proteins' properties as well as to rationally design novel biomaterials of required mechanical strength with desired balance between stiffness and plasticity.
Collapse
Affiliation(s)
- Kirill A Minin
- Moscow Institute of Physics and Technology , Dolgoprudny 141701, Russia
| | - Artem Zhmurov
- Moscow Institute of Physics and Technology , Dolgoprudny 141701, Russia
| | - Kenneth A Marx
- Department of Chemistry, University of Massachusetts , Lowell, Massachusetts 01854, United States
| | - Prashant K Purohit
- Department of Mechanical Engineering and Applied Mechanics, University of Pennsylvania , Philadelphia, Pennsylvania 19104, United States
| | - Valeri Barsegov
- Moscow Institute of Physics and Technology , Dolgoprudny 141701, Russia.,Department of Chemistry, University of Massachusetts , Lowell, Massachusetts 01854, United States
| |
Collapse
|
19
|
Fu J, Guerette PA, Pavesi A, Horbelt N, Lim CT, Harrington MJ, Miserez A. Artificial hagfish protein fibers with ultra-high and tunable stiffness. NANOSCALE 2017; 9:12908-12915. [PMID: 28832693 DOI: 10.1039/c7nr02527k] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Stiff fibers are used as reinforcing phases in a wide range of high-performance composite materials. Silk is one of the most widely studied bio-fibers, but alternative materials with specific advantages are also being explored. Among these, native hagfish (Eptatretus stoutii) slime thread is an attractive protein-based polymer. These threads consist of coiled-coil intermediate filaments (IFs) as nano-scale building blocks, which can be transformed into extended β-sheet-containing chains upon draw-processing, resulting in fibers with impressive mechanical performance. Here, we report artificial hagfish threads produced by recombinant protein expression, which were subsequently self-assembled into coiled-coil nanofilaments, concentrated, and processed into β-sheet-rich fibers by a "picking-up" method. These artificial fibers experienced mechanical performance enhancement during draw-processing. We exploited the lysine content to covalently cross-link the draw-processed fibers and obtained moduli values (E) in tension as high as ∼20 GPa, which is stiffer than most reported artificial proteinaceous materials.
Collapse
Affiliation(s)
- Jing Fu
- School of Materials Science and Engineering, Nanyang Technological University (NTU), Singapore 639798
| | | | | | | | | | | | | |
Collapse
|
20
|
Kell DB, Pretorius E. To What Extent Are the Terminal Stages of Sepsis, Septic Shock, Systemic Inflammatory Response Syndrome, and Multiple Organ Dysfunction Syndrome Actually Driven by a Prion/Amyloid Form of Fibrin? Semin Thromb Hemost 2017; 44:224-238. [PMID: 28778104 PMCID: PMC6193370 DOI: 10.1055/s-0037-1604108] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A well-established development of increasing disease severity leads from sepsis through systemic inflammatory response syndrome, septic shock, multiple organ dysfunction syndrome, and cellular and organismal death. Less commonly discussed are the equally well-established coagulopathies that accompany this. We argue that a lipopolysaccharide-initiated (often disseminated intravascular) coagulation is accompanied by a proteolysis of fibrinogen such that formed fibrin is both inflammatory and resistant to fibrinolysis. In particular, we argue that the form of fibrin generated is amyloid in nature because much of its normal α-helical content is transformed to β-sheets, as occurs with other proteins in established amyloidogenic and prion diseases. We hypothesize that these processes of amyloidogenic clotting and the attendant coagulopathies play a role in the passage along the aforementioned pathways to organismal death, and that their inhibition would be of significant therapeutic value, a claim for which there is considerable emerging evidence.
Collapse
Affiliation(s)
- Douglas B Kell
- School of Chemistry, The University of Manchester, Manchester, United Kingdom.,Manchester Institute of Biotechnology, The University of Manchester, Manchester, United Kingdom.,Centre for Synthetic Biology of Fine and Speciality Chemicals, The University of Manchester, Manchester, United Kingdom
| | - Etheresia Pretorius
- Department of Physiological Sciences, Stellenbosch University, Matieland, South Africa
| |
Collapse
|
21
|
Matsukuma D, Sambai T, Otsuka H. UCST-type phase transition driven by protein-derived polypeptide employing gelatin and chitosan. POLYM ADVAN TECHNOL 2017. [DOI: 10.1002/pat.4033] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Daisuke Matsukuma
- Department of Applied Chemistry, Faculty of Science Division I; Tokyo University of Science; 1-3 Kagurazaka, Shinjuku-ku Tokyo 162-8601 Japan
| | - Taketomo Sambai
- Department of Chemical Sciences and Technology, Graduate School of Chemical Science and Technology; Tokyo University of Science; 1-3 Kagurazaka, Shinjuku-ku Tokyo 162-8601 Japan
| | - Hidenori Otsuka
- Department of Applied Chemistry, Faculty of Science Division I; Tokyo University of Science; 1-3 Kagurazaka, Shinjuku-ku Tokyo 162-8601 Japan
- Department of Chemical Sciences and Technology, Graduate School of Chemical Science and Technology; Tokyo University of Science; 1-3 Kagurazaka, Shinjuku-ku Tokyo 162-8601 Japan
| |
Collapse
|
22
|
Loke JJ, Kumar A, Hoon S, Verma C, Miserez A. Hierarchical Assembly of Tough Bioelastomeric Egg Capsules is Mediated by a Bundling Protein. Biomacromolecules 2017; 18:931-942. [PMID: 28196415 DOI: 10.1021/acs.biomac.6b01810] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Marine snail egg capsules are shock-absorbing bioelastomers made from precursor "egg case proteins" (ECPs) that initially lack long-range order. During capsule formation, these proteins self-assemble into coiled-coil filaments that subsequently align into microscopic layers, a multiscale process which is crucial to the capsules' shock-absorbing properties. In this study, we show that the self-assembly of ECPs into their functional capsule material is mediated by a bundling protein that facilitates the aggregation of coiled-coil building blocks and their gelation into a prefinal capsule prior to final stabilization. This low molecular weight bundling protein, termed Pugilina cochlidium Bundling Protein (PcBP), led to gelation of native extracts from gravid snails, whereas crude extracts lacking PcBP did not gelate and remained as a protein solution. Refolding and reconcentration of recombinant PcBP induced bundling and aggregation of ECPs, as evidenced by ECPs oligomerization. We propose that the secretion of PcBP in vivo is a time-specific event during the embryo encapsulation process prior to cross-linking in the ventral pedal gland (VPG). Using molecular dynamics (MD) simulations, we further propose plausible disulfide binding sites stabilizing two PcBP monomers, as well as a polarized surface charge distribution, which we suggest plays an important role in the bundling mechanism. Overall, this study shows that controlled bundling is a key step during the extra-cellular self-assembly of egg capsules, which has previously been overlooked.
Collapse
Affiliation(s)
- Jun Jie Loke
- School of Materials Science and Engineering, Nanyang Technological University (NTU) , Singapore 639798, Singapore.,Centre for Biomimetic Sensor Science (CBSS), NTU , Singapore 637553, Singapore
| | - Akshita Kumar
- Centre for Biomimetic Sensor Science (CBSS), NTU , Singapore 637553, Singapore.,School of Biological Sciences, NTU , Singapore 637551, Singapore
| | - Shawn Hoon
- Molecular Engineering Lab, Biomedical Sciences Institute, Agency for Science Technology and Research (A*STAR) , Singapore 138673, Singapore
| | - Chandra Verma
- School of Biological Sciences, NTU , Singapore 637551, Singapore.,Bioinformatics Institute, A*STAR , 30 Biopolis Street, Singapore 138671, Singapore
| | - Ali Miserez
- School of Materials Science and Engineering, Nanyang Technological University (NTU) , Singapore 639798, Singapore.,Centre for Biomimetic Sensor Science (CBSS), NTU , Singapore 637553, Singapore.,School of Biological Sciences, NTU , Singapore 637551, Singapore
| |
Collapse
|
23
|
Proteins behaving badly. Substoichiometric molecular control and amplification of the initiation and nature of amyloid fibril formation: lessons from and for blood clotting. PROGRESS IN BIOPHYSICS AND MOLECULAR BIOLOGY 2017; 123:16-41. [DOI: 10.1016/j.pbiomolbio.2016.08.006] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2016] [Revised: 08/14/2016] [Accepted: 08/19/2016] [Indexed: 02/08/2023]
|
24
|
Abstract
Coiled coils appear in countless structural contexts, as appendages to small proteins, as parts of multi-domain proteins, and as building blocks of filaments. Although their structure is unpretentious and their basic properties are understood in great detail, the spectrum of functional properties they provide in different proteins has become increasingly complex. This chapter aims to depict this functional spectrum, to identify common themes and their molecular basis, with an emphasis on new insights gained into dynamic aspects.
Collapse
Affiliation(s)
- Marcus D Hartmann
- Max Planck Institute for Developmental Biology, Spemannstraße 35, 72076, Tübingen, Germany.
| |
Collapse
|
25
|
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
| |
Collapse
|
26
|
The assembly of C. elegans lamins into macroscopic fibers. J Mech Behav Biomed Mater 2016; 63:35-43. [DOI: 10.1016/j.jmbbm.2016.05.037] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Revised: 04/23/2016] [Accepted: 05/28/2016] [Indexed: 11/18/2022]
|
27
|
Litvinov RI, Weisel JW. Fibrin mechanical properties and their structural origins. Matrix Biol 2016; 60-61:110-123. [PMID: 27553509 DOI: 10.1016/j.matbio.2016.08.003] [Citation(s) in RCA: 126] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Accepted: 08/11/2016] [Indexed: 02/07/2023]
Abstract
Fibrin is a protein polymer that is essential for hemostasis and thrombosis, wound healing, and several other biological functions and pathological conditions that involve extracellular matrix. In addition to molecular and cellular interactions, fibrin mechanics has been recently shown to underlie clot behavior in the highly dynamic intra- and extravascular environments. Fibrin has both elastic and viscous properties. Perhaps the most remarkable rheological feature of the fibrin network is an extremely high elasticity and stability despite very low protein content. Another important mechanical property that is common to many filamentous protein polymers but not other polymers is stiffening occurring in response to shear, tension, or compression. New data has begun to provide a structural basis for the unique mechanical behavior of fibrin that originates from its complex multi-scale hierarchical structure. The mechanical behavior of the whole fibrin gel is governed largely by the properties of single fibers and their ensembles, including changes in fiber orientation, stretching, bending, and buckling. The properties of individual fibrin fibers are determined by the number and packing arrangements of double-stranded half-staggered protofibrils, which still remain poorly understood. It has also been proposed that forced unfolding of sub-molecular structures, including elongation of flexible and relatively unstructured portions of fibrin molecules, can contribute to fibrin deformations. In spite of a great increase in our knowledge of the structural mechanics of fibrin, much about the mechanisms of fibrin's biological functions remains unknown. Fibrin deformability is not only an essential part of the biomechanics of hemostasis and thrombosis, but also a rapidly developing field of bioengineering that uses fibrin as a versatile biomaterial with exceptional and tunable biochemical and mechanical properties.
Collapse
Affiliation(s)
- Rustem I Litvinov
- Department of Cell and Developmental Biology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104, United States
| | - John W Weisel
- Department of Cell and Developmental Biology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104, United States.
| |
Collapse
|
28
|
Chang Y, Chen PY. Hierarchical structure and mechanical properties of snake (Naja atra) and turtle (Ocadia sinensis) eggshells. Acta Biomater 2016; 31:33-49. [PMID: 26607769 DOI: 10.1016/j.actbio.2015.11.040] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Revised: 11/10/2015] [Accepted: 11/18/2015] [Indexed: 12/29/2022]
Abstract
After hundreds of million years of evolution, natural armors have evolved in various organisms, and has manifested in diverse forms such as eggshells, abalone shells, alligator osteoderms, turtle shells, and fish scales. Eggshells serve as multifunctional shields for successful embryogenesis, such as protection, moisture control and thermal regulation. Unlike calcareous avian eggshells which are brittle and hard, reptilians have leathery eggshells that are tough and flexible. Reptilian eggshells can withstand collision damages when laid in holes and dropped onto each other, and reduce abrasion caused by buried sand. In this study, we investigate structure and mechanical properties of eggshells of Taiwan cobra snake (Naja atra) and Chinese striped-neck turtle (Ocadia sinensis). From Acid Fuchsin Orange G (AFOG) staining and ATR-FTIR examination, we found that both eggshells are mainly composed of keratin. The mechanical properties of demineralized snake and turtle eggshells were evaluated by tensile and fracture tests and show distinctly difference. Turtle eggshells are relatively stiff and rigid, while snake eggshells behave as elastomers, which are highly extensible and reversible. The exceptional deformability (110-230% tensile strain) and toughness of snake eggshells are contributed by the wavy and random arrangement of keratin fibers as well as collagen layers. Multi-scale toughening mechanisms of snake eggshells were observed and elucidated, including crack deflection and twisting, fibers reorientation, sliding and bridging, inter-laminar shear effect, as well as the α-β phase transition of keratin. Inspirations from the structural and mechanical designs of reptilian eggshells may lead to the synthesis of tough, extensible, lightweight composites which could be further applied in the flexible devices, packaging and bio-medical fields. STATEMENT OF SIGNIFICANCE Amniotic eggshells serve as multifunctional shields for successful embryogenesis. The avian eggshells have been extensively studied while there are very few studies on reptilian eggshells and most of them focused on mineralization and embryotic development. For the first time, the hierarchical structure and mechanical properties of snake and turtle eggshells are comprehensively and comparatively studied. Both snake and turtle eggshells are multilayer, hierarchically-structured composites consisting mainly of keratin yet their mechanical behaviors are distinctly different. Turtle eggshells are stiff and rigid, while snake eggshells are highly extensible (>200%) and reversible due to multiple deformation stages, phase transition of keratin and various toughening mechanisms. We believe that this study will make positive scientific impact and interest the broad and multidisciplinary readership.
Collapse
Affiliation(s)
- Yin Chang
- Department of Materials Science and Engineering, National Tsing Hua University, 101, Sec. 2, Kuang-Fu Rd., Hsinchu 30013, Taiwan
| | - Po-Yu Chen
- Department of Materials Science and Engineering, National Tsing Hua University, 101, Sec. 2, Kuang-Fu Rd., Hsinchu 30013, Taiwan.
| |
Collapse
|
29
|
Böni L, Rühs PA, Windhab EJ, Fischer P, Kuster S. Gelation of Soy Milk with Hagfish Exudate Creates a Flocculated and Fibrous Emulsion- and Particle Gel. PLoS One 2016; 11:e0147022. [PMID: 26808048 PMCID: PMC4726539 DOI: 10.1371/journal.pone.0147022] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2015] [Accepted: 12/27/2015] [Indexed: 11/19/2022] Open
Abstract
Hagfish slime is an ultra dilute, elastic and cohesive hydrogel that deploys within milliseconds in cold seawater from a glandularly secreted exudate. The slime is made of long keratin-like fibers and mucin-like glycoproteins that span a network which entraps water and acts as a defense mechanism against predators. Unlike other hydrogels, the slime only confines water physically and is very susceptible to mechanical stress, which makes it unsuitable for many processing operations and potential applications. Despite its huge potential, little work has been done to improve and functionalize the properties of this hydrogel. To address this shortcoming, hagfish exudate was mixed with a soy protein isolate suspension (4% w/v) and with a soy emulsion (commercial soy milk) to form a more stable structure and combine the functionalities of a suspension and emulsion with those of the hydrogel. Hagfish exudate interacted strongly with the soy systems, showing a markedly increased viscoelasticity and water retention. Hagfish mucin was found to induce a depletion and bridging mechanism, which caused the emulsion and suspension to flocculate, making "soy slime", a cohesive and cold-set emulsion- and particle gel. The flocculation network increases viscoelasticity and substantially contributes to liquid retention by entrapping liquid in the additional confinements between aggregated particles and protein fibers. Because the mucin-induced flocculation resembles the salt- or acid-induced flocculation in tofu curd production, the soy slime was cooked for comparison. The cooked soy slime was similar to conventional cooked tofu, but possessed a long-range cohesiveness from the fibers. The fibrous, cold-set, and curd-like structure of the soy slime represents a novel way for a cold coagulation and fiber incorporation into a suspension or emulsion. This mechanism could be used to efficiently gel functionalized emulsions or produce novel tofu-like structured food products.
Collapse
Affiliation(s)
- Lukas Böni
- Food Process Engineering Group, Institute of Food, Nutrition and Health, ETH Zürich, 8092 Zürich, Switzerland
| | - Patrick A. Rühs
- Complex Materials Group, Department of Materials, ETH Zürich, 8093 Zürich, Switzerland
| | - Erich J. Windhab
- Food Process Engineering Group, Institute of Food, Nutrition and Health, ETH Zürich, 8092 Zürich, Switzerland
| | - Peter Fischer
- Food Process Engineering Group, Institute of Food, Nutrition and Health, ETH Zürich, 8092 Zürich, Switzerland
| | - Simon Kuster
- Food Process Engineering Group, Institute of Food, Nutrition and Health, ETH Zürich, 8092 Zürich, Switzerland
| |
Collapse
|
30
|
Abstract
Vascular smooth muscle (VSM; see Table 1 for a list of abbreviations) is a heterogeneous biomaterial comprised of cells and extracellular matrix. By surrounding tubes of endothelial cells, VSM forms a regulated network, the vasculature, through which oxygenated blood supplies specialized organs, permitting the development of large multicellular organisms. VSM cells, the engine of the vasculature, house a set of regulated nanomotors that permit rapid stress-development, sustained stress-maintenance and vessel constriction. Viscoelastic materials within, surrounding and attached to VSM cells, comprised largely of polymeric proteins with complex mechanical characteristics, assist the engine with countering loads imposed by the heart pump, and with control of relengthening after constriction. The complexity of this smart material can be reduced by classical mechanical studies combined with circuit modeling using spring and dashpot elements. Evaluation of the mechanical characteristics of VSM requires a more complete understanding of the mechanics and regulation of its biochemical parts, and ultimately, an understanding of how these parts work together to form the machinery of the vascular tree. Current molecular studies provide detailed mechanical data about single polymeric molecules, revealing viscoelasticity and plasticity at the protein domain level, the unique biological slip-catch bond, and a regulated two-step actomyosin power stroke. At the tissue level, new insight into acutely dynamic stress-strain behavior reveals smooth muscle to exhibit adaptive plasticity. At its core, physiology aims to describe the complex interactions of molecular systems, clarifying structure-function relationships and regulation of biological machines. The intent of this review is to provide a comprehensive presentation of one biomachine, VSM.
Collapse
Affiliation(s)
- Paul H Ratz
- Department of Biochemistry and Molecular Biology, Virginia Commonwealth University, Richmond, Virginia, USA
| |
Collapse
|
31
|
Fu J, Guerette PA, Miserez A. Self-Assembly of Recombinant Hagfish Thread Keratins Amenable to a Strain-Induced α-Helix to β-Sheet Transition. Biomacromolecules 2015; 16:2327-39. [PMID: 26102237 DOI: 10.1021/acs.biomac.5b00552] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Hagfish slime threads are assembled from protein-based bundles of intermediate filaments (IFs) that undergo a strain-induced α-helical coiled-coil to β-sheet transition. Draw processing of native fibers enables the creation of mechanically tuned materials, and under optimized conditions this process results in mechanical properties similar to spider dragline silk. In this study, we develop the foundation for the engineering of biomimetic recombinant hagfish thread keratin (TK)-based materials. The two protein constituents from the hagfish Eptatretus stoutii thread, named EsTKα and EsTKγ, were expressed in Escherichia coli and purified. Individual (rec)EsTKs and mixtures thereof were subjected to stepwise dialysis to evaluate their protein solubility, folding, and self-assembly propensities. Conditions were identified that resulted in the self-assembly of coiled-coil rich IF-like filaments, as determined by circular dichroism (CD) and transmission electron microscopy (TEM). Rheology experiments indicated that the concentrated filaments assembled into gel-like networks exhibiting a rheological response reminiscent to that of IFs. Notably, the self-assembled filaments underwent an α-helical coiled-coil to β-sheet transition when subjected to oscillatory shear, thus mimicking the critical characteristic responsible for mechanical strengthening of native hagfish threads. We propose that our data establish the foundation to create robust and tunable recombinant TK-based materials whose mechanical properties are controlled by a strain-induced α-helical coiled-coil to β-sheet transition.
Collapse
Affiliation(s)
- Jing Fu
- †School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798
| | - Paul A Guerette
- †School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798.,‡Energy Research Institute at Nanyang Technological University (ERI@N), 50 Nanyang Drive, Singapore, 637553
| | - Ali Miserez
- †School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798.,§School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive Singapore 637551
| |
Collapse
|
32
|
Quinlan RA, Bromley EH, Pohl E. A silk purse from a sow's ear-bioinspired materials based on α-helical coiled coils. Curr Opin Cell Biol 2015; 32:131-7. [PMID: 25638492 DOI: 10.1016/j.ceb.2014.12.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2014] [Revised: 12/30/2014] [Accepted: 12/31/2014] [Indexed: 11/28/2022]
Abstract
This past few years have heralded remarkable times for intermediate filaments with new revelations of their structural properties that has included the first crystallographic-based model of vimentin to build on the experimental data of intra-filament interactions determined by chemical cross-linking. Now with these and other advances on their assembly, their biomechanical and their cell biological properties outlined in this review, the exploitation of the biomechanical and structural properties of intermediate filaments, their nanocomposites and biomimetic derivatives in the biomedical and private sectors has started.
Collapse
Affiliation(s)
- Roy A Quinlan
- School of Biological and Biomedical Sciences, The University of Durham, Stockton Road, Durham DH1 3LE, UK; Biophysical Sciences Institute, The University of Durham, Stockton Road, Durham DH1 3LE, UK.
| | - Elizabeth H Bromley
- Biophysical Sciences Institute, The University of Durham, Stockton Road, Durham DH1 3LE, UK; Department of Physics, The University of Durham, Stockton Road, Durham DH1 3LE, UK
| | - Ehmke Pohl
- School of Biological and Biomedical Sciences, The University of Durham, Stockton Road, Durham DH1 3LE, UK; Biophysical Sciences Institute, The University of Durham, Stockton Road, Durham DH1 3LE, UK; Department of Chemistry, The University of Durham, Stockton Road, Durham DH1 3LE, UK
| |
Collapse
|
33
|
Fu T, Guerette PA, Tan RYT, Zhao H, Schefer L, Mezzenga R, Miserez A. Biomimetic self-assembly of recombinant marine snail egg capsule proteins into structural coiled-coil units. J Mater Chem B 2015; 3:2671-2684. [DOI: 10.1039/c4tb01434k] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
We report on the biomimetic production of shock-absorbing proteins from marine snail egg capsules and their self-assembly into coiled-coil filaments.
Collapse
Affiliation(s)
- Tianpei Fu
- School of Material Science and Engineering
- Nanyang Technological University (NTU)
- Singapore
- Center for Biomimetic Sensor Science
- NTU
| | - Paul A. Guerette
- School of Material Science and Engineering
- Nanyang Technological University (NTU)
- Singapore
- Center for Biomimetic Sensor Science
- NTU
| | - Raymond Y. T. Tan
- School of Material Science and Engineering
- Nanyang Technological University (NTU)
- Singapore
| | - Hua Zhao
- Institute of Chemical and Engineering Sciences (ICES)
- Agency for Science, Technology, and Research (A*Star)
- Singapore
| | - Larissa Schefer
- Department of Health Sciences and Technology
- Swiss Federal Institute of Technology in Zurich (ETHZ)
- 8092 Zürich
- Switzerland
| | - Raffaele Mezzenga
- Department of Health Sciences and Technology
- Swiss Federal Institute of Technology in Zurich (ETHZ)
- 8092 Zürich
- Switzerland
| | - Ali Miserez
- School of Material Science and Engineering
- Nanyang Technological University (NTU)
- Singapore
- Center for Biomimetic Sensor Science
- NTU
| |
Collapse
|
34
|
Miserez A, Weaver JC, Chaudhuri O. Biological materials and molecular biomimetics – filling up the empty soft materials space for tissue engineering applications. J Mater Chem B 2015; 3:13-24. [DOI: 10.1039/c4tb01267d] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The discovery and molecular (genetic) characterization of novel biological materials offers great potential to expand the range of soft materials used for biomedical applications.
Collapse
Affiliation(s)
- Ali Miserez
- School of Materials Science and Engineering
- Nanyang Technological University
- Singapore
- School of Biological Sciences
- Nanyang Technological University
| | - James C. Weaver
- Wyss Institute for Biologically Inspired Engineering
- Harvard University
- Cambridge
- USA
| | - Ovijit Chaudhuri
- Department of Mechanical Engineering
- Stanford University
- Stanford
- USA
| |
Collapse
|
35
|
Degtyar E, Harrington MJ, Politi Y, Fratzl P. Die Bedeutung von Metallionen für die mechanischen Eigenschaften von Biomaterialien auf Proteinbasis. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201404272] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
|
36
|
Degtyar E, Harrington MJ, Politi Y, Fratzl P. The Mechanical Role of Metal Ions in Biogenic Protein-Based Materials. Angew Chem Int Ed Engl 2014; 53:12026-44. [DOI: 10.1002/anie.201404272] [Citation(s) in RCA: 168] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Indexed: 12/23/2022]
|
37
|
Zhao X. Multi-scale multi-mechanism design of tough hydrogels: building dissipation into stretchy networks. SOFT MATTER 2014; 10:672-87. [PMID: 24834901 PMCID: PMC4040255 DOI: 10.1039/c3sm52272e] [Citation(s) in RCA: 605] [Impact Index Per Article: 60.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
As swollen polymer networks in water, hydrogels are usually brittle. However, hydrogels with high toughness play critical roles in many plant and animal tissues as well as in diverse engineering applications. Here we review the intrinsic mechanisms of a wide variety of tough hydrogels developed over the past few decades. We show that tough hydrogels generally possess mechanisms to dissipate substantial mechanical energy but still maintain high elasticity under deformation. The integrations and interactions of different mechanisms for dissipating energy and maintaining elasticity are essential to the design of tough hydrogels. A matrix that combines various mechanisms is constructed for the first time to guide the design of next-generation tough hydrogels. We further highlight that a particularly promising strategy for the design is to implement multiple mechanisms across multiple length scales into nano-, micro-, meso-, and macro-structures of hydrogels.
Collapse
Affiliation(s)
- Xuanhe Zhao
- Soft Active Materials Laboratory, Department of Mechanical Engineering and Materials Science, Duke University, Durham, North Carolina 27708, USA.
| |
Collapse
|
38
|
Wasko SS, Tay GZ, Schwaighofer A, Nowak C, Waite JH, Miserez A. Structural proteins from whelk egg capsule with long range elasticity associated with a solid-state phase transition. Biomacromolecules 2014; 15:30-42. [PMID: 24350603 DOI: 10.1021/bm401598z] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
The robust, proteinaceous egg capsules of marine prosobranch gastropods (genus Busycotypus ) exhibit unique biomechanical properties such as high elastic strain recovery and elastic energy dissipation capability. Capsule material possesses long-range extensibility that is fully recoverable and is the result of a secondary structure phase transition from α-helical coiled-coil to extended β-sheet rather than of entropic (rubber) elasticity. We report here the characterization of the precursor proteins that make up this material. Three different proteins have been purified and analyzed, and complete protein sequences deduced from messenger ribonucleic acid (mRNA) transcripts. Circular dichroism (CD) and Fourier transform infrared (FTIR) spectroscopy indicate that the proteins are strongly α-helical in solution and primary sequence analysis suggests that these proteins have a propensity to form coiled-coils. This is in agreement with previous wide-angle X-ray scattering (WAXS) and solid-state Raman spectroscopic analysis of mature egg capsules.
Collapse
Affiliation(s)
- S Scott Wasko
- Biomolecular Sciences and Engineering Program, University of California , Santa Barbara, California 93106, United States
| | | | | | | | | | | |
Collapse
|
39
|
Pan H, Zhang Y, Shao H, Hu X, Li X, Tian F, Wang J. Nanoconfined crystallites toughen artificial silk. J Mater Chem B 2014; 2:1408-1414. [DOI: 10.1039/c3tb21148g] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
40
|
Guerette PA, Z. Tay G, Hoon S, Loke JJ, Hermawan AF, Schmitt CNZ, Harrington MJ, Masic A, Karunaratne A, Gupta HS, Tan KS, Schwaighofer A, Nowak C, Miserez A. Integrative and comparative analysis of coiled-coil based marine snail egg cases – a model for biomimetic elastomers. Biomater Sci 2014; 2:710-722. [DOI: 10.1039/c3bm60264h] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
|
41
|
Song Y, Jian X, Pan Y, Wang B, Huo W, Liu A, Lv W, He W. Length evolution of helical micro/nano-scale structures. RSC Adv 2014. [DOI: 10.1039/c4ra03452j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
A geometric model for describing the kinetic growth of helical structures is derived and the correlation between helix length with parameters including height, pitch and radius is evaluated.
Collapse
Affiliation(s)
- Yuanqiang Song
- School of Energy Science and Engineering
- University of Electronic Science and Technology of China (UESTC)
- Chengdu, PR China
| | - Xian Jian
- School of Energy Science and Engineering
- University of Electronic Science and Technology of China (UESTC)
- Chengdu, PR China
| | - Yu Pan
- School of Energy Science and Engineering
- University of Electronic Science and Technology of China (UESTC)
- Chengdu, PR China
| | - Bo Wang
- School of Mathematics
- University of Electronic Science and Technology of China (UESTC)
- Chengdu, PR China
| | - Weirong Huo
- School of Energy Science and Engineering
- University of Electronic Science and Technology of China (UESTC)
- Chengdu, PR China
| | - Aifang Liu
- School of Energy Science and Engineering
- University of Electronic Science and Technology of China (UESTC)
- Chengdu, PR China
| | - Weiqiang Lv
- School of Energy Science and Engineering
- University of Electronic Science and Technology of China (UESTC)
- Chengdu, PR China
| | - Weidong He
- School of Energy Science and Engineering
- University of Electronic Science and Technology of China (UESTC)
- Chengdu, PR China
- Interdisciplinary Program in Materials Science
- Vanderbilt University
| |
Collapse
|
42
|
Accelerating the design of biomimetic materials by integrating RNA-seq with proteomics and materials science. Nat Biotechnol 2013; 31:908-15. [DOI: 10.1038/nbt.2671] [Citation(s) in RCA: 145] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2013] [Accepted: 07/22/2013] [Indexed: 01/19/2023]
|
43
|
Pinto SJ, Shadwick RE. Material and structural properties of fin whale (Balaenoptera physalus) Zwischensubstanz. J Morphol 2013; 274:947-55. [DOI: 10.1002/jmor.20154] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2012] [Revised: 02/07/2013] [Accepted: 03/03/2013] [Indexed: 11/07/2022]
Affiliation(s)
- Sheldon J.D. Pinto
- Department of Zoology; University of British Columbia; 6270 University Blvd.; Vancouver; British Columbia; V6T 1Z4; Canada
| | - Robert E. Shadwick
- Department of Zoology; University of British Columbia; 6270 University Blvd.; Vancouver; British Columbia; V6T 1Z4; Canada
| |
Collapse
|