1
|
Ma L, Dong W, Lai E, Wang J. Silk fibroin-based scaffolds for tissue engineering. Front Bioeng Biotechnol 2024; 12:1381838. [PMID: 38737541 PMCID: PMC11084674 DOI: 10.3389/fbioe.2024.1381838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2024] [Accepted: 04/12/2024] [Indexed: 05/14/2024] Open
Abstract
Silk fibroin is an important natural fibrous protein with excellent prospects for tissue engineering applications. With profound studies in recent years, its potential in tissue repair has been developed. A growing body of literature has investigated various fabricating methods of silk fibroin and their application in tissue repair. The purpose of this paper is to trace the latest developments of SF-based scaffolds for tissue engineering. In this review, we first presented the primary and secondary structures of silk fibroin. The processing methods of SF scaffolds were then summarized. Lastly, we examined the contribution of new studies applying SF as scaffolds in tissue regeneration applications. Overall, this review showed the latest progress in the fabrication and utilization of silk fibroin-based scaffolds.
Collapse
Affiliation(s)
- Li Ma
- National Innovation Center for Advanced Medical Devices, Shenzhen, China
| | - Wenyuan Dong
- National Innovation Center for Advanced Medical Devices, Shenzhen, China
| | - Enping Lai
- College of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou, China
| | - Jiamian Wang
- National Innovation Center for Advanced Medical Devices, Shenzhen, China
| |
Collapse
|
2
|
Li X, Li N, Fan Q, Yan K, Zhang Q, Wang D, You R. Silk fibroin scaffolds with stable silk I crystal and tunable properties. Int J Biol Macromol 2023; 248:125910. [PMID: 37479202 DOI: 10.1016/j.ijbiomac.2023.125910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Revised: 07/12/2023] [Accepted: 07/18/2023] [Indexed: 07/23/2023]
Abstract
It is crucial to develop a three-dimensional scaffold with tunable physical properties for the biomedical application of silk fibroin (SF). The crystallization of polymers dictates their bulk properties. The presence of two unique crystal types, silk I and silk II, provides a mechanism for controlling the properties of SF biomaterials. However, it remains challenging to manipulate silk I crystallization. In this study, we demonstrate the stability and tunability of SF scaffolds with silk I structure prepared by a freezing-annealing processing. The porous structure and mechanical properties of the scaffolds can be readily regulated by SF concentration. XRD results show that the typical peaks representing silk I do not shift when subjected to various post-treatments, such as ethanol soaking, heating, water vapor annealing, UV irradiation, and high-temperature/high-pressure, indicating the stability of silk I crystal type. Moreover, the crystallization kinetics can be regulated by changing annealing time. This physical process can regulate the transition from non-crystalline to silk I, in turn controlling the mechanical properties and degradation rate of the SF scaffolds. Our result show that this green, all-aqueous strategy provides new directions for the design of SF-based biomaterials with controllable properties.
Collapse
Affiliation(s)
- Xiufang Li
- Key Laboratory for Textile Fiber and Products of the Ministry of Education, Hubei International Scientifc and Technological Cooperation Base of Intelligent Textile Materials & Application, School of Textile Science and Engineering, Wuhan Textile University, Wuhan 430200, China.
| | - Na Li
- Key Laboratory for Textile Fiber and Products of the Ministry of Education, Hubei International Scientifc and Technological Cooperation Base of Intelligent Textile Materials & Application, School of Textile Science and Engineering, Wuhan Textile University, Wuhan 430200, China
| | - Qunmei Fan
- Key Laboratory for Textile Fiber and Products of the Ministry of Education, Hubei International Scientifc and Technological Cooperation Base of Intelligent Textile Materials & Application, School of Textile Science and Engineering, Wuhan Textile University, Wuhan 430200, China
| | - Kun Yan
- Key Laboratory for Textile Fiber and Products of the Ministry of Education, Hubei International Scientifc and Technological Cooperation Base of Intelligent Textile Materials & Application, School of Textile Science and Engineering, Wuhan Textile University, Wuhan 430200, China
| | - Qiang Zhang
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies, School of Textile Science and Engineering, Wuhan Textile University, Wuhan 430200, China
| | - Dong Wang
- Key Laboratory for Textile Fiber and Products of the Ministry of Education, Hubei International Scientifc and Technological Cooperation Base of Intelligent Textile Materials & Application, School of Textile Science and Engineering, Wuhan Textile University, Wuhan 430200, China.
| | - Renchuan You
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies, School of Textile Science and Engineering, Wuhan Textile University, Wuhan 430200, China.
| |
Collapse
|
3
|
Adsorption, Surface Viscoelasticity, and Foaming Properties of Silk Fibroin at the Air/Water Interface. COLLOIDS AND INTERFACES 2022. [DOI: 10.3390/colloids6030040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Like other proteins, the natural silk fibroin (SF) extracted from domesticated silkworms can adsorb at the air/water interface and stabilize foam due to its amphiphilic character and surface activity. At the interface, the adsorbed SF molecules experience structural reorganization and form water-insoluble viscoelastic films, which protect foam bubbles from coalescence and rupture. The solution conditions, such as protein concentration, pH, and additives, have significant influences on the molecular adsorption, layer thickness, interfacial mechanical strength, and, thus, on the foaming properties of SF. The understanding of the relationship between the interfacial adsorption, surface viscoelasticity, and foaming properties of SF is very important for the design, preparation, and application of SF foams in different fields.
Collapse
|
4
|
Angelova L, Daskalova A, Filipov E, Vila XM, Tomasch J, Avdeev G, Teuschl-Woller AH, Buchvarov I. Optimizing the Surface Structural and Morphological Properties of Silk Thin Films via Ultra-Short Laser Texturing for Creation of Muscle Cell Matrix Model. Polymers (Basel) 2022; 14:polym14132584. [PMID: 35808630 PMCID: PMC9269134 DOI: 10.3390/polym14132584] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 06/21/2022] [Accepted: 06/23/2022] [Indexed: 02/04/2023] Open
Abstract
Temporary scaffolds that mimic the extracellular matrix’s structure and provide a stable substratum for the natural growth of cells are an innovative trend in the field of tissue engineering. The aim of this study is to obtain and design porous 2D fibroin-based cell matrices by femtosecond laser-induced microstructuring for future applications in muscle tissue engineering. Ultra-fast laser treatment is a non-contact method, which generates controlled porosity—the creation of micro/nanostructures on the surface of the biopolymer that can strongly affect cell behavior, while the control over its surface characteristics has the potential of directing the growth of future muscle tissue in the desired direction. The laser structured 2D thin film matrices from silk were characterized by means of SEM, EDX, AFM, FTIR, Micro-Raman, XRD, and 3D-roughness analyses. A WCA evaluation and initial experiments with murine C2C12 myoblasts cells were also performed. The results show that by varying the laser parameters, a different structuring degree can be achieved through the initial lifting and ejection of the material around the area of laser interaction to generate porous channels with varying widths and depths. The proper optimization of the applied laser parameters can significantly improve the bioactive properties of the investigated 2D model of a muscle cell matrix.
Collapse
Affiliation(s)
- Liliya Angelova
- Institute of Electronics, Bulgarian Academy of Sciences, 72 Tzarigradsko Shousse Blvd., 1784 Sofia, Bulgaria; (A.D.); (E.F.)
- Correspondence:
| | - Albena Daskalova
- Institute of Electronics, Bulgarian Academy of Sciences, 72 Tzarigradsko Shousse Blvd., 1784 Sofia, Bulgaria; (A.D.); (E.F.)
| | - Emil Filipov
- Institute of Electronics, Bulgarian Academy of Sciences, 72 Tzarigradsko Shousse Blvd., 1784 Sofia, Bulgaria; (A.D.); (E.F.)
| | - Xavier Monforte Vila
- Department Life Science Engineering, University of Applied Sciences Technikum Wien, Höchstädtplatz 6, 1200 Vienna, Austria; (X.M.V.); (J.T.); (A.H.T.-W.)
- Austrian Cluster for Tissue Regeneration, 1200 Vienna, Austria
| | - Janine Tomasch
- Department Life Science Engineering, University of Applied Sciences Technikum Wien, Höchstädtplatz 6, 1200 Vienna, Austria; (X.M.V.); (J.T.); (A.H.T.-W.)
- Austrian Cluster for Tissue Regeneration, 1200 Vienna, Austria
| | - Georgi Avdeev
- Institute of Physical Chemistry, Bulgarian Academy of Sciences, Akad. G. Bonchev Str., 1113 Sofia, Bulgaria;
| | - Andreas H. Teuschl-Woller
- Department Life Science Engineering, University of Applied Sciences Technikum Wien, Höchstädtplatz 6, 1200 Vienna, Austria; (X.M.V.); (J.T.); (A.H.T.-W.)
- Austrian Cluster for Tissue Regeneration, 1200 Vienna, Austria
| | - Ivan Buchvarov
- Faculty of Physics, St. Kliment Ohridski University of Sofia, 5 James Bourchier Blvd., 1164 Sofia, Bulgaria;
| |
Collapse
|
5
|
Chemical Modification of Silk Fibroin through Serine Amino Acid Residues. MATERIALS 2022; 15:ma15134399. [PMID: 35806524 PMCID: PMC9267670 DOI: 10.3390/ma15134399] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 06/15/2022] [Accepted: 06/19/2022] [Indexed: 12/12/2022]
Abstract
Silk fibroin (SF) is a natural protein polymer and promising biomaterial. Chemical modifications have attracted growing interest in expanding SF applications. However, the majority of amino acid residues in SF are non-reactive and most of the reactive ones are in the crystalline region. Herein, a modification was conducted to investigate the possibility of direct modification on the surface of natural SF by a reagent with a mild reactivity, the type and quantity of the residues involved in the reactions, and the structural changes upon modification. Infrared spectrum, 1H NMR, titration and amino acid analyses, X-ray diffraction, and hemolysis test were used to analyze the materials. The results showed that sulfonic acid groups were grafted onto SF and the reaction occurred mainly at serine residues through hydroxyl groups. In total, 0.0958 mmol/g of residues participated in the modification with a modification efficiency of 7.6%. Moreover, the crystallinity and the content of β-sheet structure in SF increased upon modification. The modified material had good blood-compatibility. In conclusion, surface modification on native SF through serine residues was practicable and had the advantage of increased β-sheet structure. This will provide an alternative way for the modification of fibroin for the desired application in the biomedical field.
Collapse
|
6
|
Pham DM, Dey S, Katayama A. Activation of extracellular electron network in non-electroactive bacteria by Bombyx mori silk. Int J Biol Macromol 2022; 195:1-11. [PMID: 34871655 DOI: 10.1016/j.ijbiomac.2021.11.190] [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: 08/25/2021] [Revised: 11/18/2021] [Accepted: 11/27/2021] [Indexed: 11/05/2022]
Abstract
Extracellular electron transfer material (EETM) has increasingly attracted attentions for the enhancing effect on multiple microbial reactions. Especially, EETM is known to be essential to activate the energy network in non-electroactive bacteria. It is motivated to find out an EETM which is natural-based, environmentally friendly, and easily produced at large-scale. In this study, Bombyx mori silk is found, for the first time, to function as an EETM by using an EETM-dependent pentachlorophenol (PCP) dechlorinating anaerobic microbial culture. Subsequently, by dividing fibroin fiber into different soluble/insoluble fractions and correlating their EET functions with their structural properties based on various spectroscopic analyses, the β-sheet configuration is suggested as an essential structure supporting the EET function of silk materials. The analyses also suggested the involvement of sulfur-containing amino acids in this function. The EET function is not degraded by boiling or acid/alkaline treatments and the material can be utilized multiple times, although it is susceptible to UV irradiation. Bombyx mori silk also enhance other microbial reactions, including Fe(III)OOH reduction, CO2 reduction to acetate, and nitrogen fixation. This discovery provides a basis for developing biotechnology for environmental remediation, global warming reduction, and biofertilizer production using Bombyx mori silk and its wastes.
Collapse
Affiliation(s)
- Duyen M Pham
- Institute of Materials and Systems for Sustainability, Nagoya University, Nagoya 464-8603, Japan.
| | - Sujan Dey
- Department of Civil Engineering, Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan
| | - Arata Katayama
- Institute of Materials and Systems for Sustainability, Nagoya University, Nagoya 464-8603, Japan; Department of Civil Engineering, Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan.
| |
Collapse
|
7
|
Santos FV, Yoshioka SA, Branciforti MC. Large‐area thin films of silk fibroin prepared by two methods with formic acid as solvent and glycerol as plasticizer. J Appl Polym Sci 2021. [DOI: 10.1002/app.50759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Francisco Vieira Santos
- Department of Materials Engineering, Sao Carlos School of Engineering University of Sao Paulo Sao Carlos Brasil Brazil
| | | | - Marcia Cristina Branciforti
- Department of Materials Engineering, Sao Carlos School of Engineering University of Sao Paulo Sao Carlos Brasil Brazil
| |
Collapse
|
8
|
Yu Y, Yu X, Tian D, Yu A, Wan Y. Thermo-responsive chitosan/silk fibroin/amino-functionalized mesoporous silica hydrogels with strong and elastic characteristics for bone tissue engineering. Int J Biol Macromol 2021; 182:1746-1758. [PMID: 34052276 DOI: 10.1016/j.ijbiomac.2021.05.166] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 05/10/2021] [Accepted: 05/24/2021] [Indexed: 10/21/2022]
Abstract
Amino-functionalized mesoporous silica nanoparticles with radially porous architecture were optimally synthesized, and they were used together with silk fibroin and chitosan to produce a type of covalently crosslinked composite hydrogel using genipin as a crosslinker. The optimally achieved composite gels were found to be thermo-responsive at physiological temperature and pH with well-defined injectability. They were also detected to have mechanically strong and elastic characteristics. In addition, these gels showed the ability to release bioactive Si ions suited to an effective dose range in approximately linear manners for a few weeks. Studies on the cell-gel constructs revealed that the composite gels well supported the growth of seeded MC3T3-E1 cells, and the deposition of matrix components. Results obtained from the detection of alkaline phosphatase activity and the matrix mineralization in the cell-gel constructs confirmed that these composite gels had certain osteogenic capacity. The obtained results suggest that these composite gels have promising potential in bone repair and regeneration.
Collapse
Affiliation(s)
- Yifeng Yu
- Department of Orthopedics Trauma and Microsurgery, Zhongnan Hospital, Wuhan University, Wuhan 430071, PR China
| | - Xiaofeng Yu
- College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, PR China
| | - Danlei Tian
- College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, PR China
| | - Aixi Yu
- Department of Orthopedics Trauma and Microsurgery, Zhongnan Hospital, Wuhan University, Wuhan 430071, PR China.
| | - Ying Wan
- College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, PR China.
| |
Collapse
|
9
|
Hou TC, Jeng SC. Application of Bombyx mori Silk Fibroin Films for Liquid-Crystal Devices. ACS APPLIED BIO MATERIALS 2020; 3:8575-8580. [PMID: 35019628 DOI: 10.1021/acsabm.0c00959] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Biocompatible and biodegradable silk fibroin films show promise as an eco-friendly biomaterial with excellent mechanical, thermal, and optical transparency properties. In contrast, polyimide (PI) films adopted in the liquid-crystal display (LCD) industry for aligning LC molecules are synthesized using toxic chemicals, which are nonrecyclable and nonbiodegradable. In this work, Bombyx mori silk fibroin films are fabricated from the aqueous solution and applied as alignment films for LCDs. The thermal properties of the prepared regenerated silk fibroin materials under different heat treatment temperatures are investigated using differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). The crystallinity of different heat-treated silk fibroin materials is determined by infrared spectroscopy. The silk fibroin film treated at a higher temperature exhibits better thermal stability due to the higher crystallinity of the β-form structure. The LCDs using silk fibroin alignment films show a low pretilt angle of 0.5° and an anchoring energy of ∼10-3 J/m2 similar to those of the conventional polyimide films.
Collapse
|
10
|
The Impact of Composition and Morphology on Ionic Conductivity of Silk/Cellulose Bio-Composites Fabricated from Ionic Liquid and Varying Percentages of Coagulation Agents. Int J Mol Sci 2020; 21:ijms21134695. [PMID: 32630158 PMCID: PMC7370005 DOI: 10.3390/ijms21134695] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Revised: 06/25/2020] [Accepted: 06/29/2020] [Indexed: 12/15/2022] Open
Abstract
Blended biocomposites created from the electrostatic and hydrophobic interactions between polysaccharides and structural proteins exhibit useful and unique properties. However, engineering these biopolymers into applicable forms is challenging due to the coupling of the material’s physicochemical properties to its morphology, and the undertaking that comes with controlling this. In this particular study, numerous properties of the Bombyx mori silk and microcrystalline cellulose biocomposites blended using ionic liquid and regenerated with various coagulation agents were investigated. Specifically, the relationship between the composition of polysaccharide-protein bio-electrolyte membranes and the resulting morphology and ionic conductivity is explored using numerous characterization techniques, including scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), thermal gravimetric analysis (TGA), differential scanning calorimetry (DSC), X-ray scattering, atomic force microscopy (AFM) based nanoindentation, and dielectric relaxation spectroscopy (DRS). The results revealed that when silk is the dominating component in the biocomposite, the ionic conductivity is higher, which also correlates with higher β-sheet content. However, when cellulose becomes the dominating component in the biocomposite, this relationship is not observed; instead, cellulose semicrystallinity and mechanical properties dominate the ionic conduction.
Collapse
|
11
|
Hua J, You H, Li X, You R, Ma L. Cu(II) ion loading in silk fibroin scaffolds with silk I structure. Int J Biol Macromol 2020; 158:275-281. [PMID: 32380100 DOI: 10.1016/j.ijbiomac.2020.04.094] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 03/28/2020] [Accepted: 04/13/2020] [Indexed: 01/06/2023]
Abstract
Metal ions play important roles in the diverse biochemical reactions associated with many cell signalling pathways. The modification of biomaterials with metal ions may offer a promising approach to stimulate cellular activity for improving tissue regeneration. Here, copper ion loading as a potential therapeutic agent in silk fibroin (SF) scaffolds was investigated. Freezing-annealing was used to induce silk I crystallization for forming water-insoluble SF scaffolds. Cu(II) ions were entrapped into SF scaffolds with different ratios by forming silk I crystal networks when copper chloride dihydrate was less than 5.0 wt%, producing water-stable materials. Moreover, it was found that copper ion chelation further enhanced SF stability when a low amount copper chloride was loaded. Increasing copper chloride content weakened silk I crystallization and Cu(II) ion chelation, rendering SF scaffolds unstable in water. Above 5.0 wt% copper chloride dihydrate, silk I crystallization was prevented. Finally, silk I scaffold with 1.5 wt% copper chloride dihydrate showed the strongest water-stability and highest loading efficiency. The results provide valuable data for understanding the effect of metal ions in freezing-induced SF crystallization, and also offer options for preparing novel Cu(II)-functionalized SF scaffolds.
Collapse
Affiliation(s)
- Jinsheng Hua
- Department of Cardiology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230036, China
| | - Haining You
- State Key Laboratory for Hubei New Textile Materials and Advanced Processing Technologies, School of Textile Science and Engineering, Wuhan Textile University, Wuhan 430200, China
| | - Xiufang Li
- State Key Laboratory for Hubei New Textile Materials and Advanced Processing Technologies, School of Textile Science and Engineering, Wuhan Textile University, Wuhan 430200, China
| | - Renchuan You
- State Key Laboratory for Hubei New Textile Materials and Advanced Processing Technologies, School of Textile Science and Engineering, Wuhan Textile University, Wuhan 430200, China.
| | - Likun Ma
- Department of Cardiology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230036, China.
| |
Collapse
|
12
|
Qiao X, Miller R, Schneck E, Sun K. Influence of pH on the surface and foaming properties of aqueous silk fibroin solutions. SOFT MATTER 2020; 16:3695-3704. [PMID: 32227052 DOI: 10.1039/c9sm02372k] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Silk fibroin (SF) adsorbs at the air/water interface, reduces the surface tension, and forms interfacial layers suppressing bubble coalescence and stabilizing foam. Variation of pH alters the inter-molecular interactions of SF in the interfacial layers and thus interfacial network formation, dilatational visco-elasticity and foaming properties. At pH 4, around the isoelectric point, the reduced electrostatic repulsion between the SF molecules results in thicker adsorbed layers, but adsorption rate, foaming rate and foam stability are lower than at pH 3 and pH 7. At the highest pH investigated (pH 7), the small aggregate size and high protein flexibility lead to the formation of more ordered and stable viscoelastic interfacial networks, which are resistant to deformation breakage and generate homogeneous, denser and more stable foams.
Collapse
Affiliation(s)
- Xiuying Qiao
- State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Reinhard Miller
- Max Planck Institute of Colloids and Interfaces, 14476 Potsdam, Germany
| | - Emanuel Schneck
- Max Planck Institute of Colloids and Interfaces, 14476 Potsdam, Germany
| | - Kang Sun
- State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, China.
| |
Collapse
|
13
|
Guan Y, You H, Cai J, Zhang Q, Yan S, You R. Physically crosslinked silk fibroin/hyaluronic acid scaffolds. Carbohydr Polym 2020; 239:116232. [PMID: 32414432 DOI: 10.1016/j.carbpol.2020.116232] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 03/12/2020] [Accepted: 03/27/2020] [Indexed: 12/29/2022]
Abstract
Combining the properties of natural protein and polysaccharide is a promising strategy to generate bioactive biomaterials with controlled structure. Here, a new method of preparing water-insoluble silk fibroin/hyaluronic acid (SF/HA) scaffolds with tunable performances using an all-aqueous process is reported. Freezing-induced assembly was used to form silk I crystallization in the SF/HA blends. Silk I crystallization enhanced the stability of SF/HA scaffolds in water by forming silk I crystal networks to entrap blended HA without chemical cross-linking. Increasing HA content significantly enhanced the flexibility and water binding capacity of porous scaffolds, but high amount of HA reduced the water-stability of porous scaffolds due to insufficient silk I crystal cross-links. The enzymatic degradation behavior of the SF/HA scaffolds was investigated, revealing that the regulation ability of HA in the SF scaffolds. This novel nonchemically cross-linked protein/polysaccharide scaffold may be useful for soft tissue engineering due to excellent biocompatibility and tunable performances.
Collapse
Affiliation(s)
- Yupin Guan
- State Key Laboratory for Hubei New Textile Materials and Advanced Processing Technologies, School of Textile Science and Engineering, Wuhan Textile University, Wuhan, 430200, China
| | - Haining You
- State Key Laboratory for Hubei New Textile Materials and Advanced Processing Technologies, School of Textile Science and Engineering, Wuhan Textile University, Wuhan, 430200, China
| | - Junyi Cai
- State Key Laboratory for Hubei New Textile Materials and Advanced Processing Technologies, School of Textile Science and Engineering, Wuhan Textile University, Wuhan, 430200, China
| | - Qiang Zhang
- State Key Laboratory for Hubei New Textile Materials and Advanced Processing Technologies, School of Textile Science and Engineering, Wuhan Textile University, Wuhan, 430200, China
| | - Shuqin Yan
- State Key Laboratory for Hubei New Textile Materials and Advanced Processing Technologies, School of Textile Science and Engineering, Wuhan Textile University, Wuhan, 430200, China
| | - Renchuan You
- State Key Laboratory for Hubei New Textile Materials and Advanced Processing Technologies, School of Textile Science and Engineering, Wuhan Textile University, Wuhan, 430200, China.
| |
Collapse
|
14
|
Qiao X, Miller R, Schneck E, Sun K. Foaming properties and the dynamics of adsorption and surface rheology of silk fibroin at the air/water interface. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.124553] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
|
15
|
Li X, Fan Q, Zhang Q, Yan S, You R. Freezing-induced silk I crystallization of silk fibroin. CrystEngComm 2020. [DOI: 10.1039/d0ce00360c] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Water-insoluble silk fibroin materials with the silk I structure can be prepared by a simple and green freezing–annealing treatment.
Collapse
Affiliation(s)
- Xiufang Li
- State Key Laboratory for Hubei New Textile Materials and Advanced Processing Technologies
- School of Textile Science and Engineering
- Wuhan Textile University
- Wuhan 430200
- China
| | - Qunmei Fan
- State Key Laboratory for Hubei New Textile Materials and Advanced Processing Technologies
- School of Textile Science and Engineering
- Wuhan Textile University
- Wuhan 430200
- China
| | - Qiang Zhang
- State Key Laboratory for Hubei New Textile Materials and Advanced Processing Technologies
- School of Textile Science and Engineering
- Wuhan Textile University
- Wuhan 430200
- China
| | - Shuqin Yan
- State Key Laboratory for Hubei New Textile Materials and Advanced Processing Technologies
- School of Textile Science and Engineering
- Wuhan Textile University
- Wuhan 430200
- China
| | - Renchuan You
- State Key Laboratory for Hubei New Textile Materials and Advanced Processing Technologies
- School of Textile Science and Engineering
- Wuhan Textile University
- Wuhan 430200
- China
| |
Collapse
|
16
|
Zhang X, Pan Z. Microstructure Transitions and Dry-Wet Spinnability of Silk Fibroin Protein from Waste Silk Quilt. Polymers (Basel) 2019; 11:E1622. [PMID: 31597253 PMCID: PMC6848937 DOI: 10.3390/polym11101622] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 09/26/2019] [Accepted: 10/02/2019] [Indexed: 01/13/2023] Open
Abstract
With excellent biocompatibility and biodegradability, silk fibroin has been developed into many protein materials. For producing regenerated silk fibroin (RSF) fibers, the conformation transition of silk fibroin needs to be thoroughly studied during the spinning process. Since the many silk fabrics that are discarded comprise an increasing waste of resources and increase the pressure on the environment, in this paper, waste silk fiber was recycled in an attempt to prepare regenerated fibroin fiber by dry-wet spinning. Ethanol was the coagulation bath. The rheological properties of all the RSF solutions were investigated to acquire rheology curves and non-Newtonian indexes for spinnability analysis. Four stages of the spinning process were carried out to obtain RSF samples and study their conformation transitions, crystallization, and thermal properties by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction, and differential scanning calorimetry. Quantitative analysis of the FTIR results was performed to obtain specific data regarding the contents of the secondary structures. The results showed that higher concentration spinning solutions had better spinnability. As the spinning process progressed, random coils were gradually converted into β-sheets and crystallization increased. Among the different influencing factors, the ethanol coagulation bath played a leading role in the conformation transitions of silk fibroin.
Collapse
Affiliation(s)
- Xin Zhang
- College of Textile and Clothing Engineering, Soochow University, Suzhou 215021, China.
| | - Zhijuan Pan
- College of Textile and Clothing Engineering, Soochow University, Suzhou 215021, China.
- National Engineering Laboratory for Modern Silk, Soochow University, Suzhou 215123, China.
| |
Collapse
|
17
|
Blessing B, Trout C, Morales A, Rybacki K, Love SA, Lamoureux G, O'Malley SM, Hu X, Salas‐de la Cruz D. Morphology and ionic conductivity relationship in silk/cellulose biocomposites. POLYM INT 2019. [DOI: 10.1002/pi.5860] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
| | - Cory Trout
- Computational and Integrative BiologyRutgers University Camden NJ USA
| | | | - Karleena Rybacki
- Center for Computational and Integrative Biology, Rutgers University Camden NJ USA
| | - Stacy A Love
- Center for Computational and Integrative Biology, Rutgers University Camden NJ USA
| | - Guillaume Lamoureux
- Department of ChemistryRutgers University Camden NJ USA
- Center for Computational and Integrative Biology, Rutgers University Camden NJ USA
| | - Sean M O'Malley
- Computational and Integrative BiologyRutgers University Camden NJ USA
- Center for Computational and Integrative Biology, Rutgers University Camden NJ USA
| | - Xiao Hu
- Department of Physics and Astronomy, Department of Biomedical EngineeringRowan University Glassboro NJ USA
| | - David Salas‐de la Cruz
- Department of ChemistryRutgers University Camden NJ USA
- Center for Computational and Integrative Biology, Rutgers University Camden NJ USA
| |
Collapse
|
18
|
McGill M, Holland GP, Kaplan DL. Experimental Methods for Characterizing the Secondary Structure and Thermal Properties of Silk Proteins. Macromol Rapid Commun 2019; 40:e1800390. [PMID: 30073740 PMCID: PMC6425979 DOI: 10.1002/marc.201800390] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2018] [Revised: 06/16/2018] [Indexed: 12/17/2022]
Abstract
Silk proteins are biopolymers produced by spinning organisms that have been studied extensively for applications in materials engineering, regenerative medicine, and devices due to their high tensile strength and extensibility. This remarkable combination of mechanical properties arises from their unique semi-crystalline secondary structure and block copolymer features. The secondary structure of silks is highly sensitive to processing, and can be manipulated to achieve a wide array of material profiles. Studying the secondary structure of silks is therefore critical to understanding the relationship between structure and function, the strength and stability of silk-based materials, and the natural fiber synthesis process employed by spinning organisms. However, silks present unique challenges to structural characterization due to high-molecular-weight protein chains, repetitive sequences, and heterogeneity in intra- and interchain domain sizes. Here, experimental techniques used to study the secondary structure of silks, the information attainable from these techniques, and the limitations associated with them are reviewed. Ultimately, the appropriate utilization of a suite of techniques discussed here will enable detailed characterization of silk-based materials, from studying fundamental processing-structure-function relationships to developing commercially useful quality control assessments.
Collapse
Affiliation(s)
- Meghan McGill
- Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, MA 02155, USA
| | - Gregory P. Holland
- Department of Chemistry and Biochemistry, San Diego State University, 5500 Campanile Drive, San Diego, CA 92182-1030, USA
| | - David L. Kaplan
- Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, MA 02155, USA
| |
Collapse
|
19
|
Cao Y, Uhrich KE. Biodegradable and biocompatible polymers for electronic applications: A review. J BIOACT COMPAT POL 2018. [DOI: 10.1177/0883911518818075] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Yue Cao
- Department of Chemistry, University of California, Riverside, Riverside, CA, USA
| | - Kathryn E Uhrich
- Department of Chemistry, University of California, Riverside, Riverside, CA, USA
| |
Collapse
|
20
|
Magaz A, Roberts AD, Faraji S, Nascimento TRL, Medeiros ES, Zhang W, Greenhalgh RD, Mautner A, Li X, Blaker JJ. Porous, Aligned, and Biomimetic Fibers of Regenerated Silk Fibroin Produced by Solution Blow Spinning. Biomacromolecules 2018; 19:4542-4553. [PMID: 30387602 DOI: 10.1021/acs.biomac.8b01233] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Solution blow spinning (SBS) has emerged as a rapid and scalable technique for the production of polymeric and ceramic materials into micro-/nanofibers. Here, SBS was employed to produce submicrometer fibers of regenerated silk fibroin (RSF) from Bombyx mori (silkworm) cocoons based on formic acid or aqueous systems. Spinning in the presence of vapor permitted the production of fibers from aqueous solutions, and high alignment could be obtained by modifying the SBS setup to give a concentrated channeled airflow. The combination of SBS and a thermally induced phase separation technique (TIPS) resulted in the production of macro-/microporous fibers with 3D interconnected pores. Furthermore, a coaxial SBS system enabled a pH gradient and kosmotropic salts to be applied at the point of fiber formation, mimicking some of the aspects of the natural spinning process, fostering fiber formation by self-assembly of the spinning dope. This scalable and fast production of various types of silk-based fibrous scaffolds could be suitable for a myriad of biomedical applications.
Collapse
Affiliation(s)
- Adrián Magaz
- Bio-Active Materials Group, School of Materials , The University of Manchester , Manchester , United Kingdom.,Institute of Materials Research and Engineering (IMRE) , Agency for Science, Technology and Research (A*STAR) , Singapore
| | - Aled D Roberts
- Bio-Active Materials Group, School of Materials , The University of Manchester , Manchester , United Kingdom
| | - Sheida Faraji
- Bio-Active Materials Group, School of Materials , The University of Manchester , Manchester , United Kingdom
| | - Tatiana R L Nascimento
- Laboratory of Materials and Biosystems, Department of Materials Engineering , Universidade Federal da Paraíba , João Pessoa , Brazil
| | - Eliton S Medeiros
- Laboratory of Materials and Biosystems, Department of Materials Engineering , Universidade Federal da Paraíba , João Pessoa , Brazil
| | - Wenzhao Zhang
- Bio-Active Materials Group, School of Materials , The University of Manchester , Manchester , United Kingdom
| | - Ryan D Greenhalgh
- Bio-Active Materials Group, School of Materials , The University of Manchester , Manchester , United Kingdom
| | - Andreas Mautner
- Polymer and Composite Engineering Group, Institute of Materials Chemistry and Research , University of Vienna , Vienna , Austria
| | - Xu Li
- Institute of Materials Research and Engineering (IMRE) , Agency for Science, Technology and Research (A*STAR) , Singapore.,Department of Chemistry , National University of Singapore , Singapore
| | - Jonny J Blaker
- Bio-Active Materials Group, School of Materials , The University of Manchester , Manchester , United Kingdom
| |
Collapse
|
21
|
Pereira RFP, Zehbe K, Günter C, dos Santos T, Nunes SC, Paz FAA, Silva MM, Granja PL, Taubert A, de Zea Bermudez V. Ionic Liquid-Assisted Synthesis of Mesoporous Silk Fibroin/Silica Hybrids for Biomedical Applications. ACS OMEGA 2018; 3:10811-10822. [PMID: 30320252 PMCID: PMC6173513 DOI: 10.1021/acsomega.8b02051] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/19/2018] [Accepted: 08/24/2018] [Indexed: 06/08/2023]
Abstract
New mesoporous silk fibroin (SF)/silica hybrids were processed via a one-pot soft and energy-efficient sol-gel chemistry and self-assembly from a silica precursor, an acidic or basic catalyst, and the ionic liquid 1-butyl-3-methylimidazolium chloride, acting as both solvent and mesoporosity-inducer. The as-prepared materials were obtained as slightly transparent-opaque, amorphous monoliths, easily transformed into powders, and stable up to ca. 300 °C. Structural data suggest the formation of a hexagonal mesostructure with low range order and apparent surface areas, pore volumes, and pore radii of 205-263 m2 g-1, 0.16-0.19 cm3 g-1, and 1.2-1.6 nm, respectively. In all samples, the dominating conformation of the SF chains is the β-sheet. Cytotoxicity/bioactivity resazurin assays and fluorescence microscopy demonstrate the high viability of MC3T3 pre-osteoblasts to indirect (≥99 ± 9%) and direct (78 ± 2 to 99 ± 13%) contact with the SF/silica materials. Considering their properties and further improvements, these systems are promising candidates to be explored in bone tissue engineering. They also offer excellent prospects as electrolytes for solid-state electrochemical devices, in particular for fuel cells.
Collapse
Affiliation(s)
- Rui F. P. Pereira
- Chemistry
Center, University of Minho, 4710-057 Braga, Portugal
- CQ-VR and Chemistry Department, University of Trás-os-Montes
e Alto Douro, 5000-801 Vila Real, Portugal
| | - Kerstin Zehbe
- Institute
of Chemistry, University of Potsdam, Karl-Liebknecht-Straße 24-25, D-14476 Potsdam, Germany
| | - Christina Günter
- Institute
of Chemistry, University of Potsdam, Karl-Liebknecht-Straße 24-25, D-14476 Potsdam, Germany
| | - Tiago dos Santos
- i3S—Instituto de Investigação
e Inovação
em Saúde and INEB—Instituto de Engenharia Biomédica, Universidade do Porto, 4200-135 Porto, Portugal
| | - Sílvia C. Nunes
- Chemistry
Department and CICS—Health Sciences Research Centre, University of Beira Interior, 6201-001 Covilhã, Portugal
| | - Filipe A. Almeida Paz
- Chemistry
Department, University of Aveiro, CICECO-Aveiro
Institute of Materials, 3810-193 Aveiro, Portugal
| | - Maria M. Silva
- Chemistry
Center, University of Minho, 4710-057 Braga, Portugal
| | - Pedro L. Granja
- i3S—Instituto de Investigação
e Inovação
em Saúde and INEB—Instituto de Engenharia Biomédica, Universidade do Porto, 4200-135 Porto, Portugal
- Instituto
de Ciências Biomédicas Abel Salazar, Universidade do Porto, 4200-465 Porto, Portugal
- Faculdade
de Engenharia, Universidade
do Porto, 4200-465 Porto, Portugal
| | - Andreas Taubert
- Institute
of Chemistry, University of Potsdam, Karl-Liebknecht-Straße 24-25, D-14476 Potsdam, Germany
| | - Verónica de Zea Bermudez
- CQ-VR and Chemistry Department, University of Trás-os-Montes
e Alto Douro, 5000-801 Vila Real, Portugal
| |
Collapse
|
22
|
Li X, Deng G, Ma L, Lu X. Interchain Overlap Affects Formation of Silk Fibroin Secondary Structures on Hydrophobic Polystyrene Surface Detected via Achiral/Chiral Sum Frequency Generation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:9453-9459. [PMID: 29983068 DOI: 10.1021/acs.langmuir.8b01194] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Silk fibroin (SF) has been engineered in the biomedical applications on account of its structural robustness, biocompatibility, and biodegradability. However, in situ study is still lacking with respect to the formation of SF secondary structures at the interface. In this paper, by using methanol as an inducing agent, the formation of SF secondary structures at the polystyrene (PS)/SF solution interfaces was detected with achiral and chiral sum frequency generation (SFG) vibrational spectroscopy. SF solutions with two concentrations above and below the critical overlapping concentration ( C*) of SF (∼1.8 mg/mL) were chosen, namely, 90 and 1 mg/mL. We found that above C*, before adding methanol to the protein solution, no ordered SF secondary structures could be detected at the PS/SF solution interface; oppositely, after adding methanol to the protein solution, ordered SF secondary structure, for example, antiparallel β-sheet, could be formed at the PS/protein solution interface. Below C*, both before and after adding methanol to the SF solution, ordered SF secondary structure such as antiparallel β-sheet could be formed. Besides, the addition of methanol could induce the formation of an extended helical structure, verified by the achiral and chiral characteristic bands. Because C* represents a critical solution concentration above which the SF chains can interact with each other and below which the SF chains are isolated in the solution, this achiral/chiral SFG study emphasizes the importance of the chain-chain interaction or spatial confinement on the formation of the protein secondary structures, which provides an additional dimension for the future study of interfacial protein folding.
Collapse
Affiliation(s)
- Xu Li
- State Key Laboratory of Bioelectronics, School of Biological Science & Medical Engineering , Southeast University , Nanjing 210096 , Jiangsu Province , P. R. China
| | - Guozhe Deng
- State Key Laboratory of Bioelectronics, School of Biological Science & Medical Engineering , Southeast University , Nanjing 210096 , Jiangsu Province , P. R. China
| | - Liang Ma
- State Key Laboratory of Bioelectronics, School of Biological Science & Medical Engineering , Southeast University , Nanjing 210096 , Jiangsu Province , P. R. China
| | - Xiaolin Lu
- State Key Laboratory of Bioelectronics, School of Biological Science & Medical Engineering , Southeast University , Nanjing 210096 , Jiangsu Province , P. R. China
| |
Collapse
|
23
|
Maleki H, Whitmore L, Hüsing N. Novel multifunctional polymethylsilsesquioxane-silk fibroin aerogel hybrids for environmental and thermal insulation applications. JOURNAL OF MATERIALS CHEMISTRY. A 2018; 6:12598-12612. [PMID: 30713688 PMCID: PMC6333272 DOI: 10.1039/c8ta02821d] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Accepted: 06/08/2018] [Indexed: 05/16/2023]
Abstract
The development of aerogels with improved mechanical properties, to expand their utility in high-performance applications, is still a big challenge. Besides fossil-fuel based polymers that have been extensively utilized as platforms to enhance the mechanical strength of silsesquioxane and silica-based aerogels, using green biopolymers from various sustainable renewable resources are currently drawing significant attention. In this work, we process silk fibroin (SF) proteins, extracted from silkworm cocoons, with organically substituted alkoxysilanes in an entirely aqueous based solution via a successive sol-gel approach, and show for the first time that it is possible to produce homogeneous interpenetrated (IPN) polymethylsilsesquioxane (PMSQ)-SF hybrid aerogel monoliths with significantly improved mechanical properties. Emphasis is given to an improvement of the molecular interaction of the two components (SF biopolymer and PMSQ) using a silane coupling agent and to the design of pore structure. We succeeded in developing a novel class of compressible, light-weight, and hierarchically organized meso-macroporous PMSQ-SF IPN hybrid aerogels by carefully controlling the sol-gel parameters at a molecular level. Typically, these aerogels have a compressive strength (δ max) of up to 14 MPa, together with high flexibility in both compression and bending, compressibility up to 80% strain with very low bulk density (ρ b) of 0.08-0.23 g cm-3. By considering these promising properties, the superhydrophobic/oleophilic PMSQ-SF aerogel hybrids exhibited a high competency for selective absorption of a variety of organic pollutants (absorption capacities ∼500-2600 g g-1 %) from water and acted as a high-performance filter for continuous water/oil separation. Moreover, they have demonstrated impressive thermal insulation performance (λ = 0.032-0.044 W m-1 K-1) with excellent fire retardancy and self-extinguishing capabilities. Therefore, the PMSQ-SF aerogel hybrids would be a new class of open porous material and are expected to further extend the practical applications of this class of porous compounds.
Collapse
Affiliation(s)
- Hajar Maleki
- Chemistry and Physics of Materials , Paris-Lodron University Salzburg , Jakob-Haringer-Strasse 2a , 5020 , Salzburg , Austria .
| | - Lawrence Whitmore
- Chemistry and Physics of Materials , Paris-Lodron University Salzburg , Jakob-Haringer-Strasse 2a , 5020 , Salzburg , Austria .
| | - Nicola Hüsing
- Chemistry and Physics of Materials , Paris-Lodron University Salzburg , Jakob-Haringer-Strasse 2a , 5020 , Salzburg , Austria .
| |
Collapse
|
24
|
Stanton J, Xue Y, Pandher P, Malek L, Brown T, Hu X, Salas-de la Cruz D. Impact of ionic liquid type on the structure, morphology and properties of silk-cellulose biocomposite materials. Int J Biol Macromol 2018; 108:333-341. [DOI: 10.1016/j.ijbiomac.2017.11.137] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Revised: 11/18/2017] [Accepted: 11/21/2017] [Indexed: 02/06/2023]
|
25
|
Maniglio D, Bonani W, Migliaresi C, Motta A. Silk fibroin porous scaffolds by N 2O foaming. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2018; 29:491-506. [PMID: 29297760 DOI: 10.1080/09205063.2018.1423811] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Silk fibroin has acquired increasing interest for biomedical applications, and namely for the fabrication of scaffolds for tissue engineering, because of its highly positive biological interaction and the possibility to adapt the material to several application requirements by adopting different fabrication methods, in order to make films, sponges, fibers, nets or gels with predictable degradation times. For tissue engineering, in most cases porous scaffolds are required, in some cases possibly in situ forming and therefore fabricated in mild body-compatible conditions. In this work, we present a novel one-step method for the preparation of silk fibroin foams starting from water solutions and using low-pressure nitrous oxide gas as foaming agent. This foaming technique allows preparing fibroin porous scaffolds with easily tunable porosity, in mild processing conditions with the use of a relatively inert foaming agent saturating a fibroin water solution, that could be occasionally injected through a thin needle in the implantation site where expansion and foaming would occur. Optimal foaming processing conditions have been investigated, and the prepared foams have been characterized with Fourier Transform Infrared Spectroscopy (FTIR) compressive mechanical and rheological properties measurements, and by scanning electron microscopy and microCT.
Collapse
Affiliation(s)
- Devid Maniglio
- a Department of Industrial Engineering and BIOtech Research Center , University of Trento , Trento , Italy
| | - Walter Bonani
- a Department of Industrial Engineering and BIOtech Research Center , University of Trento , Trento , Italy
| | - Claudio Migliaresi
- a Department of Industrial Engineering and BIOtech Research Center , University of Trento , Trento , Italy
| | - Antonella Motta
- a Department of Industrial Engineering and BIOtech Research Center , University of Trento , Trento , Italy
| |
Collapse
|
26
|
Wan Q, Abrams KJ, Masters RC, Talari ACS, Rehman IU, Claeyssens F, Holland C, Rodenburg C. Mapping Nanostructural Variations in Silk by Secondary Electron Hyperspectral Imaging. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1703510. [PMID: 29116662 DOI: 10.1002/adma.201703510] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Revised: 08/29/2017] [Indexed: 06/07/2023]
Abstract
Nanostructures underpin the excellent properties of silk. Although the bulk nanocomposition of silks is well studied, direct evidence of the spatial variation of nanocrystalline (ordered) and amorphous (disordered) structures remains elusive. Here, secondary electron hyperspectral imaging can be exploited for direct imaging of hierarchical structures in carbon-based materials, which cannot be revealed by any other standard characterization methods. Through applying this technique to silks from domesticated (Bombyx mori) and wild (Antheraea mylitta) silkworms, a variety of previously unseen features are reported, highlighting the local interplay between ordered and disordered structures. This technique is able to differentiate composition on the nanoscale and enables in-depth studies into the relationship between morphology and performance of these complex biopolymer systems.
Collapse
Affiliation(s)
- Quan Wan
- Department of Materials Science and Engineering, University of Sheffield, Sir Robert Hadfield Building, Mappin Street, Sheffield, S1 3JD, UK
| | - Kerry J Abrams
- Department of Materials Science and Engineering, University of Sheffield, Sir Robert Hadfield Building, Mappin Street, Sheffield, S1 3JD, UK
| | - Robert C Masters
- Department of Materials Science and Engineering, University of Sheffield, Sir Robert Hadfield Building, Mappin Street, Sheffield, S1 3JD, UK
| | - Abdullah C S Talari
- Department of Materials Science and Engineering, University of Sheffield, Sir Robert Hadfield Building, Mappin Street, Sheffield, S1 3JD, UK
| | - Ihtesham U Rehman
- Department of Materials Science and Engineering, University of Sheffield, Sir Robert Hadfield Building, Mappin Street, Sheffield, S1 3JD, UK
| | - Frederik Claeyssens
- Department of Materials Science and Engineering, University of Sheffield, Sir Robert Hadfield Building, Mappin Street, Sheffield, S1 3JD, UK
| | - Chris Holland
- Department of Materials Science and Engineering, University of Sheffield, Sir Robert Hadfield Building, Mappin Street, Sheffield, S1 3JD, UK
| | - Cornelia Rodenburg
- Department of Materials Science and Engineering, University of Sheffield, Sir Robert Hadfield Building, Mappin Street, Sheffield, S1 3JD, UK
| |
Collapse
|
27
|
Wu X, Wu X, Yang B, Shao M, Feng G. Methanol-Water-Dependent Structural Changes of Regenerated Silk Fibroin Probed Using Terahertz Spectroscopy. APPLIED SPECTROSCOPY 2017; 71:1785-1794. [PMID: 28537487 DOI: 10.1177/0003702817706368] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The mechanism of β-sheet crystallization in silk fibroin remains unclear, due to the incomplete information of protein assembly and structural state. The emerging terahertz (THz) spectroscopy (<10 THz) has been taken as an important tool to detect new aspects of biomolecular structure and is used for the first time to analyze the methanol-water (MeOH) induced structural changes of Bombyx mori silk fibroin. Mid-infrared spectroscopy (IR) and X-ray diffraction (XRD) results show that silk fibroin initially exists in a typical silk I form and reassemble into a predominant silk II (antiparallel β-sheet crystal) structure after MeOH treatment. The samples treated with MeOH-H2O mixed solutions show a predominant silk I structure without any silk-II-related peaks. As the MeOH concentration approaches 40 vol%, the absorbance of the β-sheet-related IR bands and the XRD peaks gradually increase, indicating a formation of β-sheet crystal during this process. THz spectrum shows the absorption capacity below 3 THz as well as the absorbance at 5.1 THz and 7.9 THz is indeed affected by the MeOH-H2O treatment, implying a MeOH-H2O-dependent change of intermolecular H-bonds in silk fibroin. The THz spectrum for silk fibroin gives additional information to the existing studies on the MeOH-H2O induced β-sheet crystallization of silk fibroin, which may help us understanding the structural changes of natural silk.
Collapse
Affiliation(s)
- Xu Wu
- 1 College of Materials and Textile, Zhejiang Sci-Tech University, Hangzhou, China
| | - Xiaodong Wu
- 1 College of Materials and Textile, Zhejiang Sci-Tech University, Hangzhou, China
| | - Bin Yang
- 1 College of Materials and Textile, Zhejiang Sci-Tech University, Hangzhou, China
- 2 Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou, China
| | - Min Shao
- 2 Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou, China
| | - Guojin Feng
- 3 Material Optics and Spectrum Lab, Division of Metrology in Optics and Laser, National Institute of Metrology, Beijing, China
| |
Collapse
|
28
|
Cebe P, Partlow BP, Kaplan DL, Wurm A, Zhuravlev E, Schick C. Silk I and Silk II studied by fast scanning calorimetry. Acta Biomater 2017; 55:323-332. [PMID: 28389368 DOI: 10.1016/j.actbio.2017.04.001] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Revised: 03/13/2017] [Accepted: 04/03/2017] [Indexed: 01/06/2023]
Abstract
Using fast scanning calorimetry (FSC), we investigated the glass transition and crystal melting of samples of B. mori silk fibroin containing Silk I and/or Silk II crystals. Due to the very short residence times at high temperatures during such measurements, thermal decomposition of silk protein can be significantly suppressed. FSC was performed at 2000K/s using the Mettler Flash DSC1 on fibroin films with masses around 130-270ng. Films were prepared with different crystalline fractions (ranging from 0.26 to 0.50) and with different crystal structures (Silk I, Silk II, or mixed) by varying the processing conditions. These included water annealing at different temperatures, exposure to 50%MeOH in water, or autoclaving. The resulting crystal structure was examined using wide angle X-ray scattering. Degree of crystallinity was evaluated from Fourier transform infrared (FTIR) spectroscopy and from analysis of the heat capacity increment at the glass transition temperature. Silk fibroin films prepared by water annealing at 25°C were the least crystalline and had Silk I structure. FTIR and FSC studies showed that films prepared by autoclaving or 50%MeOH exposure were the most crystalline and had Silk II structure. Intermediate crystalline fraction and mixed Silk I/Silk II structures were found in films prepared by water annealing at 37°C. FSC results indicate that Silk II crystals exhibit endotherms of narrower width and have higher mean melting temperature Tm(II)=351±2.6°C, compared to Silk I crystals which melt at Tm(I)=292±3.8°C. Films containing mixed Silk I/Silk II structure showed two clearly separated endothermic peaks. Evidence suggests that the two types of crystals melt separately and do not thermally interconvert on the extremely short time scale (0.065s between onset and end of melting) of the FSC experiment. STATEMENT OF SIGNIFICANCE Silkworm silk is a naturally occurring biomaterial. The fibroin component of silk forms two types of crystals. Silk properties depend upon the amount and type of crystals, and their stability. One measure of stability is crystal melting temperature. Crystals which are more stable have a higher melting temperature. Until now, it has been challenging to study thermal behavior of silk crystals because they degrade at high temperature. To avoid degradation, and study the melting properties of silk biomaterial, we heated silk at a very fast rate of 2000K/s using a special calorimeter. We have shown that the two crystal types have very different melting temperatures, indicating that one crystal type is much more stable than the other.
Collapse
|
29
|
Structural and thermal properties of silk fibroin films obtained from cocoon and waste silk fibers as raw materials. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/j.proeng.2017.07.054] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
|
30
|
Rheological, mechanical and degradable properties of injectable chitosan/silk fibroin/hydroxyapatite/glycerophosphate hydrogels. J Mech Behav Biomed Mater 2016; 64:161-72. [DOI: 10.1016/j.jmbbm.2016.07.007] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Revised: 07/04/2016] [Accepted: 07/06/2016] [Indexed: 11/22/2022]
|
31
|
Smeets R, Vorwig O, Wöltje M, Gaudin R, Luebke AM, Beck-Broichsitter B, Rheinnecker M, Heiland M, Grupp K, Gröbe A, Hanken H. Microvascular stent anastomosis using N-fibroin stents: feasibility, ischemia time, and complications. Oral Surg Oral Med Oral Pathol Oral Radiol 2016; 121:e97-e103. [DOI: 10.1016/j.oooo.2016.01.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2015] [Revised: 01/11/2016] [Accepted: 01/15/2016] [Indexed: 10/22/2022]
|
32
|
Kluge JA, Kahn BT, Brown JE, Omenetto FG, Kaplan DL. Optimizing Molecular Weight of Lyophilized Silk As a Shelf-Stable Source Material. ACS Biomater Sci Eng 2016; 2:595-605. [PMID: 33465861 DOI: 10.1021/acsbiomaterials.5b00556] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Storage of silk proteins in liquid form can lead to excessive waste from premature gelation, thus an alternative storage strategy is proposed using lyophilization to generate soluble and shelf-stable powder formats for on-demand use. Initial solution stability studies highlighted instabilities of higher-molecular-weight silks that could not be resolved by solution modifications such as autoclaving, pH increases, dilution, or combinations thereof. Conversely, shelf-stable lyophilized stock powders of silk fibroin of moderate to low molecular weights were developed that could be fully constituted even after 1 year of storage at elevated temperatures. Increasing dried silk powder loading in aqueous solution facilitated increased silk solution concentrations-here up to 80 mg/mL solubility was demonstrated across a range of formulations. Powders generated from silk solutions with higher-molecular-weight distributions were less soluble than moderate or lower-molecular-weight versions, despite no differences in their solution glass-transition temperatures. Instead, the aggregation and β-sheet content of lyophilized higher molecular weight stock solutions were identified as the cause of the reduced powder solubility by circular dichroism and dynamic light scattering analyses. The solubility and molecular weight profiles of all formulations investigated were preserved after storing the lyophilized materials over 1 year, even at 37 °C. No long-term powder stability behaviors were influenced by the addition of a secondary drying step in the lyophilization procedure, suggesting that this protocol could be scaled without the burden of lengthy process times. Taken together, these findings provide a very flexible and potentially cost-saving approach to producing shelf-stable silk fibroin stock materials based on the use of moderate to lower-molecular-weight lyophilized preparations. This utility is demonstrated with the formation of silk material formats from the stored powders, including films, gels, and salt-leached porous scaffolds. In turn, a more efficient system allowing full resolubilization will enable stockpiling powder for on-demand usage and for deployment of dried silks for application demands in field settings.
Collapse
Affiliation(s)
- Jonathan A Kluge
- Vaxess Technologies, c/o Lab Central, 700 Main Street, Cambridge Massachusetts 02139, United States
| | | | | | | | | |
Collapse
|
33
|
Li AB, Kluge JA, Guziewicz NA, Omenetto FG, Kaplan DL. Silk-based stabilization of biomacromolecules. J Control Release 2015; 219:416-430. [PMID: 26403801 PMCID: PMC4656123 DOI: 10.1016/j.jconrel.2015.09.037] [Citation(s) in RCA: 95] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Accepted: 09/19/2015] [Indexed: 11/26/2022]
Abstract
Silk fibroin is a high molecular weight amphiphilic protein that self-assembles into robust biomaterials with remarkable properties including stabilization of biologicals and tunable release kinetics correlated to processing conditions. Cells, antibiotics,monoclonal antibodies and peptides, among other biologics, have been encapsulated in silk using various processing approaches and material formats. The mechanistic basis for the entrapment and stabilization features, along with insights into the modulation of release of the entrained compounds from silks will be reviewed with a focus on stabilization of bioactive molecules.
Collapse
Affiliation(s)
- Adrian B Li
- Department of Chemical and Biological Engineering, Tufts University, 4 Colby Street, Medford, MA 02155, USA
| | - Jonathan A Kluge
- Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, MA 02155, USA
| | - Nicholas A Guziewicz
- Drug Product Technologies, Amgen, 1 Amgen Center Drive, Thousand Oaks, CA 91320, USA
| | - Fiorenzo G Omenetto
- Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, MA 02155, USA
| | - David L Kaplan
- Department of Chemical and Biological Engineering, Tufts University, 4 Colby Street, Medford, MA 02155, USA; Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, MA 02155, USA.
| |
Collapse
|
34
|
Asakura T, Okushita K, Williamson MP. Analysis of the Structure of Bombyx mori Silk Fibroin by NMR. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b00160] [Citation(s) in RCA: 134] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Tetsuo Asakura
- Department
of Biotechnology, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588, Japan
- Institute for
Molecular Science, 38 Nishigo-Naka, Myodaiji, Okazaki 444-8585, Japan
| | - Keiko Okushita
- Department
of Biotechnology, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588, Japan
| | - Mike P. Williamson
- Department
of Molecular Biology and Biotechnology, University of Sheffield, Firth Court,
Western Bank, Sheffield S10 2TN, U.K
| |
Collapse
|
35
|
Bai S, Zhang X, Lu Q, Sheng W, Liu L, Dong B, Kaplan DL, Zhu H. Reversible hydrogel-solution system of silk with high beta-sheet content. Biomacromolecules 2014; 15:3044-51. [PMID: 25056606 PMCID: PMC4130251 DOI: 10.1021/bm500662z] [Citation(s) in RCA: 87] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2014] [Revised: 07/05/2014] [Indexed: 01/06/2023]
Abstract
Silkworm silk has been widely used as a textile fiber, as biomaterials and in optically functional materials due to its extraordinary properties. The β-sheet-rich natural nanofiber units of about 10-50 nm in diameter are often considered the origin of these properties, yet it remains unclear how silk self-assembles into these hierarchical structures. A new system composed of β-sheet-rich silk nanofibers about 10-20 nm in diameter is reported here, where these nanofibers formed into "flowing hydrogels" at 0.5-2% solutions and could be transformed back into the solution state at lower concentrations, even with a high β-sheet content. This is in contrast with other silk processed materials, where significant β-sheet content negates reversibility between solution and solid states. These fibers are formed by regulating the self-assembly process of silk in aqueous solution, which changes the distribution of negative charges while still supporting β-sheet formation in the structures. Mechanistically, there appears to be a shift toward negative charges along the outside of the silk nanofibers in our present study, resulting in a higher zeta potential (above -50 mV) than previous silk materials which tend to be below -30 mV. The higher negative charge on silk nanofibers resulted in electrostatic repulsion strong enough to negate further assembly of the nanofibers. Changing silk concentration changed the balance between hydrophobic interactions and electrostatic repulsion of β-sheet-rich silk nanofibers, resulting in reversible hydrogel-solution transitions. Furthermore, the silk nanofibers could be disassembled into shorter fibers and even nanoparticles upon ultrasonic treatment following the transition from hydrogel to solution due to the increased dispersion of hydrophobic smaller particles, without the loss of β-sheet content, and with retention of the ability to transition between hydrogel and solution states through reversion to longer nanofibers during self-assembly. These reversible solution-hydrogel transitions were tunable with ultrasonic intensity, time, or temperature.
Collapse
Affiliation(s)
- Shumeng Bai
- National
Engineering Laboratory for Modern Silk & Collaborative Innovation
Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, People’s Republic
of China
| | - Xiuli Zhang
- National
Engineering Laboratory for Modern Silk & Collaborative Innovation
Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, People’s Republic
of China
| | - Qiang Lu
- National
Engineering Laboratory for Modern Silk & Collaborative Innovation
Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, People’s Republic
of China
- Jiangsu
Province Key Laboratory of Stem Cell Research, Medical College, Soochow University, Suzhou 215006, People’s
Republic of China
| | - Weiqin Sheng
- National
Engineering Laboratory for Modern Silk & Collaborative Innovation
Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, People’s Republic
of China
| | - Lijie Liu
- National
Engineering Laboratory for Modern Silk & Collaborative Innovation
Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, People’s Republic
of China
| | - Boju Dong
- National
Engineering Laboratory for Modern Silk & Collaborative Innovation
Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, People’s Republic
of China
| | - David L. Kaplan
- National
Engineering Laboratory for Modern Silk & Collaborative Innovation
Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, People’s Republic
of China
- Department
of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155, United States
| | - Hesun Zhu
- Research
Center of Materials Science, Beijing Institute
of Technology, Beijing, 100081, People’s Republic of China
| |
Collapse
|
36
|
Lin Y, Xia X, Wang M, Wang Q, An B, Tao H, Xu Q, Omenetto F, Kaplan DL. Genetically programmable thermoresponsive plasmonic gold/silk-elastin protein core/shell nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:4406-4414. [PMID: 24712906 PMCID: PMC4002124 DOI: 10.1021/la403559t] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2013] [Revised: 03/23/2014] [Indexed: 05/29/2023]
Abstract
The design and development of future molecular photonic/electronic systems pose the challenge of integrating functional molecular building blocks in a controlled, tunable, and reproducible manner. The modular nature and fidelity of the biosynthesis method provides a unique chemistry approach to one-pot synthesis of environmental factor-responsive chimeric proteins capable of energy conversion between the desired forms. In this work, facile tuning of dynamic thermal response in plasmonic nanoparticles was facilitated by genetic engineering of the structure, size, and self-assembly of the shell silk-elastin-like protein polymers (SELPs). Recombinant DNA techniques were implemented to synthesize a new family of SELPs, S4E8Gs, with amino acid repeats of [(GVGVP)4(GGGVP)(GVGVP)3(GAGAGS)4] and tunable molecular weight. The temperature-reversible conformational switching between the hydrophilic random coils and the hydrophobic β-turns in the elastin blocks were programmed to between 50 and 60 °C by site-specific glycine mutation, as confirmed by variable-temperature proton NMR and circular dichroism (CD) spectroscopy, to trigger the nanoparticle aggregation. The dynamic self-aggregation/disaggregation of the Au-SELPs nanoparticles was regulated in size and pattern by the β-sheet-forming, thermally stable silk blocks, as revealed by transmission electron microscopy (TEM) and dynamic light scattering (DLS). The thermally reversible, shell dimension dependent, interparticle plasmon coupling was investigated by both variable-temperature UV-vis spectroscopy and finite-difference time-domain (FDTD)-based simulations. Good agreement between the calculated and measured spectra sheds light on design and synthesis of responsive plasmonic nanostructures by independently tuning the refractive index and size of the SELPs through genetic engineering.
Collapse
Affiliation(s)
- Yinan Lin
- Department
of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, Massachusetts 02155, United States
| | - Xiaoxia Xia
- Department
of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, Massachusetts 02155, United States
- State
Key Laboratory of Microbial Metabolism, School of Life Sciences and
Biotechnology, Shanghai Jiaotong University, 800 Dong-chuan Road, Shanghai 200240, China
| | - Ming Wang
- Department
of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, Massachusetts 02155, United States
| | - Qianrui Wang
- Department
of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, Massachusetts 02155, United States
| | - Bo An
- Department
of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, Massachusetts 02155, United States
| | - Hu Tao
- Department
of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, Massachusetts 02155, United States
| | - Qiaobing Xu
- Department
of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, Massachusetts 02155, United States
| | - Fiorenzo Omenetto
- Department
of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, Massachusetts 02155, United States
| | - David L. Kaplan
- Department
of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, Massachusetts 02155, United States
| |
Collapse
|
37
|
The Silk I and Lamella Structures of (Ala-Gly)15 as the Model of Bombyx mori Silk Fibroin Studied with Solid State NMR. BIOTECHNOLOGY OF SILK 2014. [DOI: 10.1007/978-94-007-7119-2_3] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
|
38
|
Gil ES, Park SH, Hu X, Cebe P, Kaplan DL. Impact of Sterilization on the Enzymatic Degradation and Mechanical Properties of Silk Biomaterials. Macromol Biosci 2013; 14:257-69. [DOI: 10.1002/mabi.201300321] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2013] [Revised: 08/15/2013] [Indexed: 12/24/2022]
Affiliation(s)
- Eun Seok Gil
- Department of Biomedical Engineering; Tufts University; 4 Colby St. Medford 02155 MA USA
| | - Sang-Hyug Park
- Department of Biomedical Engineering; Tufts University; 4 Colby St. Medford 02155 MA USA
- Department of Biomedical Engineering; Jungwon University; Goesan-eup Chungbuk Korea
| | - Xiao Hu
- Department of Biomedical Engineering; Tufts University; 4 Colby St. Medford 02155 MA USA
- Department of Physics & Astronomy; and Department of Biomedical Engineering and Sciences; Rowan University; Glassboro NJ 08028 USA
| | - Peggy Cebe
- Department of Biomedical Engineering; Tufts University; 4 Colby St. Medford 02155 MA USA
- Department of Physics and Astronomy; Tufts University; 4 Colby St. Medford 02155 MA USA
| | - David L. Kaplan
- Department of Biomedical Engineering; Tufts University; 4 Colby St. Medford 02155 MA USA
| |
Collapse
|
39
|
|
40
|
Abstract
In this study, regenerated Bombyx Mori (B. Mori ) silk fibroin from two aqueous solvents was analyzed for structural deviations. Results from Fourier transform infrared spectroscopy (FTIR) and Wide angle x-ray diffraction (WAXD) implied great alteration in the secondary structure, crystallinity and molecular weight due to the regeneration process.
Collapse
|
41
|
Muthumanickkam A, Subramanian S, Goweri M, Sofi Beaula W, Ganesh V. Comparative study on eri silk and mulberry silk fibroin scaffolds for biomedical applications. IRANIAN POLYMER JOURNAL 2013. [DOI: 10.1007/s13726-012-0113-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
42
|
Kim HJ, Park SH, Durham J, Gimble JM, Kaplan DL, Dragoo JL. In vitro chondrogenic differentiation of human adipose-derived stem cells with silk scaffolds. J Tissue Eng 2012; 3:2041731412466405. [PMID: 23316274 PMCID: PMC3540700 DOI: 10.1177/2041731412466405] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Human adipose-derived stem cells have shown chondrogenic differentiation potential in cartilage tissue engineering in combination with natural and synthetic biomaterials. In the present study, we hypothesized that porous aqueous-derived silk protein scaffolds would be suitable for chondrogenic differentiation of human adipose-derived stem cells. Human adipose-derived stem cells were cultured up to 6 weeks, and cell proliferation and chondrogenic differentiation were investigated and compared with those in conventional micromass culture. Cell proliferation, glycosaminoglycan, and collagen levels in aqueous-derived silk scaffolds were significantly higher than in micromass culture. Transcript levels of SOX9 and type II collagen were also upregulated in the cell-silk constructs at 6 weeks. Histological examination revealed that the pores of the silk scaffolds were filled with cells uniformly distributed. In addition, chondrocyte-specific lacunae formation was evident and distributed in the both groups. The results suggest the biodegradable and biocompatible three-dimensional aqueous-derived silk scaffolds provided an improved environment for chondrogenic differentiation compared to micromass culture.
Collapse
Affiliation(s)
- Hyeon Joo Kim
- Department of Orthopaedic Surgery, Stanford University School of Medicine, Palo Alto, CA, USA
| | | | | | | | | | | |
Collapse
|
43
|
Silva MF, de Moraes MA, Nogueira GM, Rodas ACD, Higa OZ, Beppu MM. Glycerin and ethanol as additives on silk fibroin films: Insoluble and malleable films. J Appl Polym Sci 2012. [DOI: 10.1002/app.38139] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
44
|
Zhang H, Li LL, Dai FY, Zhang HH, Ni B, Zhou W, Yang X, Wu YZ. Preparation and characterization of silk fibroin as a biomaterial with potential for drug delivery. J Transl Med 2012; 10:117. [PMID: 22676291 PMCID: PMC3538618 DOI: 10.1186/1479-5876-10-117] [Citation(s) in RCA: 82] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2012] [Accepted: 05/21/2012] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Degummed silk fibroin from Bombyx mori (silkworm) has potential carrier capabilities for drug delivery in humans; however, the processing methods have yet to be comparatively analyzed to determine the differential effects on the silk protein properties, including crystalline structure and activity. METHODS In this study, we treated degummed silk with four kinds of calcium-alcohol solutions, and performed secondary structure measurements and enzyme activity test to distinguish the differences between the regenerated fibroins and degummed silk fibroin. RESULTS Gel electrophoresis analysis revealed that Ca(NO3)2-methanol, Ca(NO3)2-ethanol, or CaCl2-methanol treatments produced more lower molecular weights of silk fibroin than CaCl2-ethanol. X-ray diffraction and Fourier-transform infrared spectroscopy showed that CaCl2-ethanol produced a crystalline structure with more silk I (α-form, type II β-turn), while the other treatments produced more silk II (β-form, anti-parallel β-pleated sheet). Solid-State 13C cross polarization and magic angle spinning-nuclear magnetic resonance measurements suggested that regenerated fibroins from CaCl2-ethanol were nearly identical to degummed silk fibroin, while the other treatments produced fibroins with significantly different chemical shifts. Finally, enzyme activity test indicated that silk fibroins from CaCl2-ethanol had higher activity when linked to a known chemotherapeutic drug, L-asparaginase, than the fibroins from other treatments. CONCLUSIONS Collectively, these results suggest that the CaCl2-ethanol processing method produces silk fibroin with biomaterial properties that are appropriate for drug delivery.
Collapse
Affiliation(s)
- Hao Zhang
- Institute of Immunology Third Military Medical University, Chongqing, 400038, Peoples Republic of China
| | - Ling-ling Li
- Biochemistry engineering department, Chongqing Industry & Trade Polytechnic, Chongqing, 408000, Peoples Republic of China
| | - Fang-yin Dai
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, 400715, Peoples Republic of China
| | - Hao-hao Zhang
- Institute of Immunology Third Military Medical University, Chongqing, 400038, Peoples Republic of China
| | - Bing Ni
- Institute of Immunology Third Military Medical University, Chongqing, 400038, Peoples Republic of China
| | - Wei Zhou
- Institute of Immunology Third Military Medical University, Chongqing, 400038, Peoples Republic of China
| | - Xia Yang
- Institute of Immunology Third Military Medical University, Chongqing, 400038, Peoples Republic of China
| | - Yu-zhang Wu
- Institute of Immunology Third Military Medical University, Chongqing, 400038, Peoples Republic of China
| |
Collapse
|
45
|
Lee OJ, Lee JM, Kim JH, Kim J, Kweon H, Jo YY, Park CH. Biodegradation behavior of silk fibroin membranes in repairing tympanic membrane perforations. J Biomed Mater Res A 2012; 100:2018-26. [DOI: 10.1002/jbm.a.33308] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2011] [Revised: 09/06/2011] [Accepted: 10/21/2011] [Indexed: 11/07/2022]
|
46
|
Rao JW, Ouyang LQ, Jia XL, Quan DP, Xu YB. THE FABRICATION AND CHARACTERIZATION OF 3D POROUS SERICIN/FIBROIN BLENDED SCAFFOLDS. BIOMEDICAL ENGINEERING-APPLICATIONS BASIS COMMUNICATIONS 2012. [DOI: 10.4015/s1016237211002311] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Objective: To explore how to fabricate the three-dimensional (3D) porous sericin/fibroin blended scaffolds for the first time. Methods: The 3D porous sericin/fibroin blended scaffolds were fabricated by salt leaching method, its morphology was observed by scanning electron microscopy (SEM), its structure was characterized by Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD), its mechanical property was characterized by resistance to mechanical compression and rebound/compressed ratio, protease XIV was used to tested its degradation in vitro, MTT assay was used to quantitatively analyze the PC12 cells' viability co cultured with its extraction fluid. Results: Varying the ratios of sericin/fibroin and the particle sizes of granular NaCl used in the process, leads to the control of morphological and functional properties of the scaffolds. The 3D porous sericin/fibroin blended scaffolds had homogeneous and interconnected pores which controlled by the particle sizes of granular NaCl , shared similar crystal structure of β-sheet with the natural silk, importantly, and had excellent mechanical properties. MTT assay results showed that the sericin/fibroin blended scaffolds also had good biocompatibility. Conclusion: The 3D porous sericin/fibroin blended scaffolds provide useful properties as control of pore size, degradability, excellent mechanical property, and good biocompatibility, which substantiated the potential of it for use in tissue engineering applications.
Collapse
Affiliation(s)
- Jian-Wei Rao
- Department of Plastic and Reconstruction Surgery, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510080, China
| | - Liang-Qi Ouyang
- Institute of Polymer Science, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, China
| | - Xian-lei Jia
- Department of Plastic and Reconstruction Surgery, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510080, China
| | - Da-Ping Quan
- Institute of Polymer Science, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, China
| | - Yang-Bin Xu
- Department of Plastic and Reconstruction Surgery, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510080, China
| |
Collapse
|
47
|
Feng XX, Guo YH, Chen JY, Zhang JC. Nano-TiO2 induced secondary structural transition of silk fibroin studied by two-dimensional Fourier-transform infrared correlation spectroscopy and Raman spectroscopy. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2012; 18:1443-56. [DOI: 10.1163/156856207782246786] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Xin-Xing Feng
- a The State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, P. R. China; The Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Zhejiang Sci-Tech University, Hangzhou 310018, P. R. China
| | - Yu-Hai Guo
- b The Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Zhejiang Sci-Tech University, Hangzhou 310018, P. R. China
| | - Jian-Yong Chen
- c The Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Zhejiang Sci-Tech University, Hangzhou 310018, P. R. China
| | - Jian-Chun Zhang
- d The State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, P. R. China; The Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Zhejiang Sci-Tech University, Hangzhou 310018, P. R. China
| |
Collapse
|
48
|
Rapidly dissolving fibroin microneedles for transdermal drug delivery. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2011. [DOI: 10.1016/j.msec.2011.06.010] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
49
|
Zhang F, Zhang H, Zuo B, Zhang X. Preparation and characterization of electrospun silk fibroin nanofiber with addition of 1-ethyl-3-(3-dimethylarainopropyl) carbodiimide. POLYMER SCIENCE SERIES A 2011. [DOI: 10.1134/s0965545x1105004x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
|
50
|
|