1
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Tan G, Jia T, Qi Z, Lu S. Regenerated Fiber's Ideal Target: Comparable to Natural Fiber. MATERIALS (BASEL, SWITZERLAND) 2024; 17:1834. [PMID: 38673192 PMCID: PMC11050933 DOI: 10.3390/ma17081834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2024] [Revised: 04/12/2024] [Accepted: 04/13/2024] [Indexed: 04/28/2024]
Abstract
The toughness of silk naturally obtained from spiders and silkworms exceeds that of all other natural and man-made fibers. These insects transform aqueous protein feedstocks into mechanically specialized materials, which represents an engineering phenomenon that has developed over millions of years of natural evolution. Silkworms have become a new research hotspot due to the difficulties in collecting spider silk and other challenges. According to continuous research on the natural spinning process of the silkworm, it is possible to divide the main aspects of bionic spinning into two main segments: the solvent and behavior. This work focuses on the various methods currently used for the spinning of artificial silk fibers to replicate natural silk fibers, providing new insights based on changes in the fiber properties and production processes over time.
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Affiliation(s)
| | | | | | - Shenzhou Lu
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China; (G.T.); (T.J.); (Z.Q.)
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2
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Gupta S, Kandasubramanian B. Silk adsorbent for green and efficient removal of methylene blue from wastewater. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024:10.1007/s11356-024-33226-9. [PMID: 38605272 DOI: 10.1007/s11356-024-33226-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Accepted: 04/02/2024] [Indexed: 04/13/2024]
Abstract
Silk, a naturally occurring proteinaceous biopolymer with remarkable adsorbent properties, has been employed in wastewater remediation. The sericin coating, functioning as a protective barrier and rendering fibres impervious to external chemical attacks and preventing their involvement in chemical reactions, was removed using a greener alternative to harness silk as an effective adsorbent. Subsequently, the silk fibres underwent intermittent microwave degumming to extract sericin, and the fibres were utilized for the adsorptive exclusion of the hazardous methylene blue (MB) dye. The comparative batch adsorption studies (kinetics and isotherm) between raw silk fibres and degummed fibres were performed to comprehend the role of degumming on fibre adsorption efficacy by varying operating conditions, including pH, time of contact, initial adsorbate and dosage of adsorbent. The paramount adsorption capacity of raw silk was observed to be 137.08 mg g-1 and 179.14 mg g-1 for degummed silk when adsorbate conc. was 100 ppm. The kinetics of adsorption obeyed pseudo-second order suggesting that the rate controlling step is chemisorptions, and data demonstrated greatest fit to Langmuir isotherm exhibiting mono-layer adsorption. Further, biodegradability was studied by mimicking natural environmental conditions where the raw and degummed silk fibres demonstrated 51% and 53% degradation, respectively, after 180 days. Overall, based on obtained results, this study highlights the suitability of silk as an effective as well as sustainable adsorbent for the exclusion of toxic methylene blue dye from wastewater.
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Affiliation(s)
- Shruti Gupta
- Structural Composites Laboratory, Department of Metallurgical and Materials Engineering, Defence Institute of Advanced Techology (DU), Ministry of Defence, Girinagar, Pune, 411025, Maharashtra, India
| | - Balasubramanian Kandasubramanian
- Structural Composites Laboratory, Department of Metallurgical and Materials Engineering, Defence Institute of Advanced Techology (DU), Ministry of Defence, Girinagar, Pune, 411025, Maharashtra, India.
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3
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Fang C, You Y, Luo F, Li Z, Shen Y, Wang F, Zhang J, Gan RY, Ye Y. Silk Fibroin Encapsulated Icariin Nanoparticles Mitigate Bisphenol A-Induced Spermatogenesis Dysfunction. Adv Healthc Mater 2024; 13:e2302899. [PMID: 37940136 DOI: 10.1002/adhm.202302899] [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: 08/30/2023] [Revised: 10/28/2023] [Indexed: 11/10/2023]
Abstract
Bisphenol A (BPA) is a prevalent endocrine disruptor found in natural environments. Exposure to BPA has been associated with male infertility. The natural phytochemical icariin (ICA) has demonstrated significant promise for the treatment of male infertility. However, its effectiveness is limited due to its low bioavailability, poor water solubility, and insufficient targeting abilities. Herein, novel nanoparticles are generated from the natural silk fibroin, which are used to load ICA. The efficient drug delivery system (ICA-SNPs) result in significantly focused drug distribution to spermatogonium, enhancing the anti-infertility properties of ICA, and can effectively mitigate spermatogenesis dysfunction induced by BPA, control serum sex hormone levels, and enhance testicular ultrastructure. Additionally, the ICA-SNPs restore spermatogenesis dysfunction primarily via the hormone biosynthesis, spermatogonium meiosis process, and glycerophospholipid metabolism.
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Affiliation(s)
- Chunyan Fang
- TCM Regulating Metabolic Diseases Key Laboratory of Sichuan Province, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, 610072, China
- Tea Research Institute, Tea Refining and Innovation Key Laboratory of Sichuan Province, Sichuan Academy of Agricultural Sciences, Chengdu, 610066, China
| | - Yaodong You
- TCM Regulating Metabolic Diseases Key Laboratory of Sichuan Province, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, 610072, China
| | - Fan Luo
- Tea Research Institute, Tea Refining and Innovation Key Laboratory of Sichuan Province, Sichuan Academy of Agricultural Sciences, Chengdu, 610066, China
| | - Zheng Li
- State Key Laboratory of Resource Insects, Key Laboratory for Sericulture Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Sericulture, Textile and Biomass Sciences, Southwest University, Chongqing, 400715, China
| | - Yifeng Shen
- TCM Regulating Metabolic Diseases Key Laboratory of Sichuan Province, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, 610072, China
| | - Fangyue Wang
- TCM Regulating Metabolic Diseases Key Laboratory of Sichuan Province, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, 610072, China
| | - Jingyi Zhang
- TCM Regulating Metabolic Diseases Key Laboratory of Sichuan Province, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, 610072, China
| | - Ren-You Gan
- Principal Scientist, Singapore Institute of Food and Biotechnology Innovation (SIFBI), Agency for Science, Technology and Research (A*STAR), 31 Biopolis Way, Singapore, 138669, Singapore
- Department of Food Science and Technology, National University of Singapore, 2 Science Drive 2, Singapore, 117542, Singapore
| | - Yulong Ye
- Tea Research Institute, Tea Refining and Innovation Key Laboratory of Sichuan Province, Sichuan Academy of Agricultural Sciences, Chengdu, 610066, China
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4
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Dos Santos FV, Siqueira RL, de Morais Ramos L, Yoshioka SA, Branciforti MC, Correa DS. Silk fibroin-derived electrospun materials for biomedical applications: A review. Int J Biol Macromol 2024; 254:127641. [PMID: 37913875 DOI: 10.1016/j.ijbiomac.2023.127641] [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: 07/27/2023] [Revised: 10/14/2023] [Accepted: 10/22/2023] [Indexed: 11/03/2023]
Abstract
Electrospinning is a versatile technique for fabricating polymeric fibers with diameters ranging from micro- to nanoscale, exhibiting multiple morphologies and arrangements. By combining silk fibroin (SF) with synthetic and/or natural polymers, electrospun materials with outstanding biological, chemical, electrical, physical, mechanical, and optical properties can be achieved, fulfilling the evolving biomedical demands. This review highlights the remarkable versatility of SF-derived electrospun materials, specifically focusing on their application in tissue regeneration (including cartilage, cornea, nerves, blood vessels, bones, and skin), disease treatment (such as cancer and diabetes), and the development of controlled drug delivery systems. Additionally, we explore the potential future trends in utilizing these nanofibrous materials for creating intelligent biomaterials, incorporating biosensors and wearable sensors for monitoring human health, and also discuss the bottlenecks for its widespread use. This comprehensive overview illuminates the significant impact and exciting prospects of SF-derived electrospun materials in advancing biomedical research and applications.
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Affiliation(s)
- Francisco Vieira Dos Santos
- Nanotechnology National Laboratory for Agriculture, Embrapa Instrumentação, 13560-970 São Carlos, SP, Brazil; Materials Engineering Department, São Carlos School of Engineering, University of São Paulo, 13563-120 São Carlos, SP, Brazil
| | - Renato Luiz Siqueira
- Materials Engineering Department, Federal University of São Carlos, 13565-905 São Carlos, SP, Brazil
| | - Lucas de Morais Ramos
- São Carlos Institute of Physics, University of São Paulo, 13560-970 São Carlos, SP, Brazil
| | - Sérgio Akinobu Yoshioka
- Laboratory of Biochemistry and Biomaterials, São Carlos Institute of Chemistry, University of São Paulo, 13560-970 São Carlos, SP, Brazil
| | - Márcia Cristina Branciforti
- Materials Engineering Department, São Carlos School of Engineering, University of São Paulo, 13563-120 São Carlos, SP, Brazil
| | - Daniel Souza Correa
- Nanotechnology National Laboratory for Agriculture, Embrapa Instrumentação, 13560-970 São Carlos, SP, Brazil; Materials Engineering Department, São Carlos School of Engineering, University of São Paulo, 13563-120 São Carlos, SP, Brazil.
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5
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Huang L, Shi J, Zhou W, Zhang Q. Advances in Preparation and Properties of Regenerated Silk Fibroin. Int J Mol Sci 2023; 24:13153. [PMID: 37685960 PMCID: PMC10487664 DOI: 10.3390/ijms241713153] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 08/19/2023] [Accepted: 08/21/2023] [Indexed: 09/10/2023] Open
Abstract
Over the years, silk fibroin (SF) has gained significant attention in various fields, such as biomedicine, tissue engineering, food processing, photochemistry, and biosensing, owing to its remarkable biocompatibility, machinability, and chemical modifiability. The process of obtaining regenerated silk fibroin (RSF) involves degumming, dissolving, dialysis, and centrifugation. RSF can be further fabricated into films, sponges, microspheres, gels, nanofibers, and other forms. It is now understood that the dissolution method selected greatly impacts the molecular weight distribution and structure of RSF, consequently influencing its subsequent processing and application. This study comprehensively explores and summarizes different dissolution methods of SF while examining their effects on the structure and performance of RSF. The findings presented herein aim to provide valuable insights and references for researchers and practitioners interested in utilizing RSF in diverse fields.
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Affiliation(s)
| | | | | | - Qing Zhang
- College of Sericulture, Textile and Biomass Sciences, Southwest University, Chongqing 400715, China
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6
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Wang XR, Meng ZY, Wang XF, Cai WL, Liu K, Wang D. Silk Nanofibril-Palygorskite Composite Membranes for Efficient Removal of Anionic Dyes. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:247. [PMID: 36678001 PMCID: PMC9864787 DOI: 10.3390/nano13020247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 12/27/2022] [Accepted: 01/03/2023] [Indexed: 06/17/2023]
Abstract
To develop membrane materials with good performance for water purification that are green and low cost, this work reports an organic-inorganic composite membrane composed of silk nanofibrils (SNFs) and palygorskite (PGS). To improve the stability of the the composite membrane, genipin was used as a crosslinking agent to induce the conformational transition of SNF chains from random coils to β-sheets, reducing the swelling and hydrolysis of the membrane. The separation performance can be adjusted by tailoring the component ratio of the nanomaterial. The results showed that these membranes can effectively remove anionic dyes from water, and they exhibit excellent water permeability. The SNF-based membrane had strong mechanical and separation properties, and the PGS could tune the structure of composite membranes to enhance their permeability, so this green composite membrane has good prospects in water treatment and purification applications.
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Affiliation(s)
- Xu-rui Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
| | - Zhe-yi Meng
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
| | - Xue-fen Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
| | - Wei-long Cai
- Qingyuan Innovation Laboratory, Quanzhou 362801, China
| | - Ke Liu
- Key Laboratory of Textile Fiber and Products, Ministry of Education, Hubei International Scientific and Technological Cooperation Base of Intelligent Textile Materials and Application, Wuhan Textile University, Wuhan 430200, China
| | - Dong Wang
- Key Laboratory of Textile Fiber and Products, Ministry of Education, Hubei International Scientific and Technological Cooperation Base of Intelligent Textile Materials and Application, Wuhan Textile University, Wuhan 430200, China
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7
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de Brito VP, de Souza Ribeiro MM, Viganó J, de Moraes MA, Veggi PC. Silk Fibroin Hydrogels Incorporated with the Antioxidant Extract of Stryphnodendron adstringens Bark. Polymers (Basel) 2022; 14:polym14224806. [PMID: 36432933 PMCID: PMC9698373 DOI: 10.3390/polym14224806] [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: 10/03/2022] [Revised: 10/31/2022] [Accepted: 11/04/2022] [Indexed: 11/11/2022] Open
Abstract
Barbatimão (Stryphnodendron adstringens) is a Brazilian medicinal plant known for its pharmacological properties, including healing activity related to its phenolic composition, which is chiefly given by tannins. In order to preserve its stability and bioactivity, barbatimão extracts can be incorporated into (bio-)polymeric matrixes, of which silk fibroin stands out due to its versatility and tunable properties. This work aimed to obtain barbatimão bark extract rich in phenolic compounds and evaluate its incorporation in fibroin hydrogels. From the extraction process, it was observed that the PG (propylene glycol) extract presented a higher global yield (X0) and phenolic compounds (TPC) than the ET (ethanol) extract. Furthermore, the antioxidant activity (ORAC and FRAP) was similar between both extracts. Regarding the hydrogels, morphological, chemical, thermal, and mechanical characterizations were performed to understand the influence of the barbatimão extract and the solvent on the fibroin hydrogel properties. As a result, the hydrogels containing the barbatimão PG extract (BT/PG hydrogels) showed the better physical-chemical and structural performance. Therefore, these hydrogels should be further investigated regarding their potential in medical and pharmaceutical applications, especially in wound healing.
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Affiliation(s)
- Vivian P. de Brito
- Department of Chemical Engineering, Institute of Environmental, Chemical and Pharmaceutical Sciences, Federal University of São Paulo, Diadema 09913-030, SP, Brazil
| | - Maurício M. de Souza Ribeiro
- Department of Chemical Engineering, Institute of Environmental, Chemical and Pharmaceutical Sciences, Federal University of São Paulo, Diadema 09913-030, SP, Brazil
| | - Juliane Viganó
- Nature Science Center, Federal University of São Carlos, Rod. Lauri Simões de Barros, Km. 12-SP 189, Buri 18290-000, SP, Brazil
| | - Mariana A. de Moraes
- Department of Chemical Engineering, Institute of Environmental, Chemical and Pharmaceutical Sciences, Federal University of São Paulo, Diadema 09913-030, SP, Brazil
| | - Priscilla C. Veggi
- Department of Chemical Engineering, Institute of Environmental, Chemical and Pharmaceutical Sciences, Federal University of São Paulo, Diadema 09913-030, SP, Brazil
- Correspondence: ; Tel.: +55-11-4044-0500 (ext. 3550)
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8
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Li Z, Cheng G, Zhang Q, Wu W, Zhang Y, Wu B, Liu Z, Tong X, Xiao B, Cheng L, Dai F. PX478-loaded silk fibroin nanoparticles reverse multidrug resistance by inhibiting the hypoxia-inducible factor. Int J Biol Macromol 2022; 222:2309-2317. [DOI: 10.1016/j.ijbiomac.2022.10.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 09/27/2022] [Accepted: 10/04/2022] [Indexed: 11/05/2022]
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9
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Cheng G, Wang X, Wu M, Wu S, Cheng L, Zhang X, Dai F. Insignificant Difference in Biocompatibility of Regenerated Silk Fibroin Prepared with Ternary Reagent Compared with Regenerated Silk Fibroin Prepared with Lithium Bromide. Polymers (Basel) 2022; 14:polym14183903. [PMID: 36146047 PMCID: PMC9502819 DOI: 10.3390/polym14183903] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Revised: 09/11/2022] [Accepted: 09/13/2022] [Indexed: 11/16/2022] Open
Abstract
Bombyx mori silk fibroin (SF) is widely used in the field of biomaterials due to its excellent biocompatibility and mechanical properties. However, SF cannot be used directly in many applications and needs to be dissolved first. Lithium bromide (LiBr) is a traditional solvent which is usually used to dissolve SF. However, LiBr has several limitations, e.g., it is expensive, it is toxic to organisms, and it is environmentally unfriendly. Herein, we investigate the possibility of developing a ternary reagent system that is inexpensive, non-toxic to organisms, and environmentally friendly as an alternative for silk fibroin solubilization. The results confirm that regenerated silk fibroin (RSF) prepared using a ternary reagent has the same morphology and amino acid composition as that prepared using LiBr, but the RSF prepared using a ternary reagent still had a small amount of calcium residue even after long-term dialysis. Further research found that the residual calcium does not cause significant differences in the structure and biological performance of the RSF, such as its cytotoxicity, blood compatibility, and antibacterial properties. Therefore, we believe that ternary reagents are an ideal alternative solvent for dissolving SF.
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Affiliation(s)
- Guotao Cheng
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Sericulture & Textile and Biomass Sciences, Southwest University, Chongqing 400715, China
| | - Xin Wang
- Center for Joint Surgery, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - Mengqiu Wu
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Sericulture & Textile and Biomass Sciences, Southwest University, Chongqing 400715, China
| | - Siyuan Wu
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Sericulture & Textile and Biomass Sciences, Southwest University, Chongqing 400715, China
| | - Lan Cheng
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Sericulture & Textile and Biomass Sciences, Southwest University, Chongqing 400715, China
| | - Xiaoning Zhang
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Sericulture & Textile and Biomass Sciences, Southwest University, Chongqing 400715, China
| | - Fangyin Dai
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Sericulture & Textile and Biomass Sciences, Southwest University, Chongqing 400715, China
- Correspondence:
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10
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Changes in Natural Silk Fibres by Hydration, Tensile Loading and Heating as Studied by 1H NMR: Anisotropy in NMR Relaxation Times. Polymers (Basel) 2022; 14:polym14173665. [PMID: 36080741 PMCID: PMC9460615 DOI: 10.3390/polym14173665] [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: 07/23/2022] [Revised: 08/16/2022] [Accepted: 08/18/2022] [Indexed: 11/17/2022] Open
Abstract
B. mori silkworm natural silk is a fibrous biopolymer with a block copolymer design containing both hydrophobic and hydrophilic regions. Using 1H NMR relaxation, this work studied B. mori natural silk fibres oriented at 0° and 90° to the static magnetic field B0 to clarify how measured NMR parameters reflect the structure and anisotropic properties of hydrated silk fibres. The FTIR method was applied to monitor the changes in the silk I and β-sheet conformations. Unloaded B. mori silk fibres at different hydration levels (HL), the silk threads before and after tensile loading in water, and fibres after a stepped increase in temperature have been explored. NMR data discovered two components in T1 and T2 relaxations for both orientations of silk fibres (0° and 90°). For the slower T2 component, the results showed an obvious anisotropic effect with higher relaxation times for the silk fibres oriented at 90° to B0. The T1 component (water protons, HL = 0.11) was sequentially decreased over a range of fibres: 0° oriented, randomly oriented, silk B. mori cocoon, 90° oriented. The degree of anisotropy in T2 relaxation was decreasing with increasing HL. The T2 in silk threads oriented at 0° and 90° also showed anisotropy in increased HL (to 0.42 g H2O/g dry matter), at tensile loading, and at an increasing temperature towards 320 K. The changes in NMR parameters and different relaxation mechanisms affecting water molecular interactions and silk properties have been discussed. The findings provide new insights relating to the water anisotropy in hydrated Bombyx mori silk fibres at tensile loading and under a changing HL and temperature.
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11
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Recent Research Progress of Ionic Liquid Dissolving Silks for Biomedicine and Tissue Engineering Applications. Int J Mol Sci 2022; 23:ijms23158706. [PMID: 35955840 PMCID: PMC9369158 DOI: 10.3390/ijms23158706] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2022] [Revised: 07/27/2022] [Accepted: 08/01/2022] [Indexed: 11/22/2022] Open
Abstract
Ionic liquids (ILs) show a bright application prospect in the field of biomedicine and energy materials due to their unique recyclable, modifiability, structure of cation and anion adjustability, as well as excellent physical and chemical properties. Dissolving silk fibroin (SF), from different species silkworm cocoons, with ILs is considered an effective new way to obtain biomaterials with highly enhanced/tailored properties, which can significantly overcome the shortcomings of traditional preparation methods, such as the cumbersome, time-consuming and the organic toxicity caused by manufacture. In this paper, the basic structure and properties of SF and the preparation methods of traditional regenerated SF solution are first introduced. Then, the dissolving mechanism and main influencing factors of ILs for SF are expounded, and the fabrication methods, material structure and properties of SF blending with natural biological protein, inorganic matter, synthetic polymer, carbon nanotube and graphene oxide in the ILs solution system are introduced. Additionally, our work summarizes the biomedicine and tissue engineering applications of silk-based materials dissolved through various ILs. Finally, according to the deficiency of ILs for dissolving SF at a high melting point and expensive cost, their further study and future development trend are prospected.
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12
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Species identification of silks by protein mass spectrometry reveals evidence of wild silk use in antiquity. Sci Rep 2022; 12:4579. [PMID: 35301348 PMCID: PMC8931077 DOI: 10.1038/s41598-022-08167-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Accepted: 02/08/2022] [Indexed: 12/05/2022] Open
Abstract
Silk has been a luxurious commodity throughout modern human history and sericulture has played an important role in ancient global trade as well as technological and cultural developments. Archaeological findings suggest that prior to domestication of the mulberry silkworm (Bombyxmori) silks were obtained from a range of silk-producing moth species with regional specificity. However, investigating the origins of sericulture is difficult as classification of silks by species-type has proved technically challenging. We therefore investigated a range of methods for solubilising modern and archaeological silks and developed a mass spectrometry-based proteomics method that was able to successfully differentiate modern Bombyx,Antheraea, and Samia-produced silks down to the species level. We subsequently analysed archaeological silk materials excavated from the ancient city of Palmyra. Solubilisation behaviour and proteomic analysis provided evidence that the Palmyra silks were constructed from wild silk derived from Antheraeamylitta, the Indian Tasar silkworm. We believe this is the first species-level biochemical evidence that supports archaeological theories about the production and trade of Indian wild silks in antiquity.
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13
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Deng Q, Wang F, Gough CR, Hu X. Tunable microphase-regulated silk fibroin/poly (lactic acid) biocomposite materials generated from ionic liquids. Int J Biol Macromol 2022; 197:55-67. [PMID: 34952094 DOI: 10.1016/j.ijbiomac.2021.12.060] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2021] [Revised: 11/23/2021] [Accepted: 12/09/2021] [Indexed: 12/30/2022]
Abstract
One of the most effective and promising strategies to develop novel biomaterials with unique, tunable structure and physicochemical properties is by creating composite materials that combine synthetic polymers with natural proteins using ionic liquids. In this study, biodegradable poly(d,l-lactic acid) (PDLLA) was blended with silk fibroin (SF) to create biocompatible films using an ionic liquid-based binary solvent system (1-butyl-3-methylimidazolium chloride/N,N-dimethylformamide), which can maintain the molecular weights of the proteins/polymers and encourage intermolecular interactions between the molecules. The effects of varying the ratio of PLA to SF were studied using scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), water contact angle testing, and cytotoxicity analysis as well as enzymatic degradation. Results showed that the composite films were homogeneously blended on the macroscopic scale and exhibited typical fully miscible polymer blend characteristics. By increasing the SF content in the composites, the amounts of β-sheets in the films were significantly increased, allowing for SF to act as a physical crosslinker to maintain the stability of the protein-polymer network. Additionally, SF significantly improved the hydrophilicity and biocompatibility of the material and promoted the self-assembly of micelle structures in the biocomposites. Different topologies in the films also provided beneficial surface morphology for cell adhesion, growth, and proliferation. Overall, this study demonstrated an effective fabrication method for a fine-tuned polymer blends combining synthetic polymer and protein for a wide variety of biomedical and green material applications.
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Affiliation(s)
- Qianqian Deng
- Center of Analysis and Testing, Nanjing Normal University, Nanjing 210023, China; School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China
| | - Fang Wang
- Center of Analysis and Testing, Nanjing Normal University, Nanjing 210023, China; School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China.
| | - Christopher R Gough
- Department of Physics and Astronomy, Rowan University, Glassboro, NJ 08028, USA
| | - Xiao Hu
- Department of Physics and Astronomy, Rowan University, Glassboro, NJ 08028, USA; Department of Biomedical Engineering, Rowan University, Glassboro, NJ 08028, USA; Department of Molecular and Cellular Biosciences, Rowan University, Glassboro, NJ 08028, USA.
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14
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Liu Z, Li S, Yin Z, Zhu Z, Chen L, Tan W, Chen Z. Stabilizing Enzymes in Plasmonic Silk Film for Synergistic Therapy of In Situ SERS Identified Bacteria. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2104576. [PMID: 34989177 PMCID: PMC8867187 DOI: 10.1002/advs.202104576] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 11/08/2021] [Indexed: 05/06/2023]
Abstract
Increasing antibiotic resistance becomes a serious threat to public health. Photothermal therapy (PTT) and antibacterial enzyme-based therapy are promising nonresistant strategies for efficiently killing drug-resistant bacteria. However, the poor thermostability of enzymes in PTT hinders their synergistic therapy. Herein, antibacterial glucose oxidase (GOx) is embedded in a Ag graphitic nanocapsule (Ag@G) arrayed silk film to fabricate a GOx-synergistic PTT system (named silk-GOx-Ag@G, SGA). The SGA system can stabilize GOx by a vitrification process through the restriction of hydrogen bond and rigid β-sheet, and keep the antibacterial activity in the hyperthermal PTT environment. Moreover, the arrayed Ag@G possesses excellent chemical stability due to the protection of graphitic shell, providing stable plasmonic effect for integrating PTT and surface enhanced Raman scattering (SERS) analysis even in the GOx-produced H2 O2 environment. With in situ SERS identification of bacterial intrinsic signals in the mouse wound model, such SGA realizes superior synergistic antibacterial effect on the infected Escherichia coli, Staphylococcus aureus, and methicillin-resistant Staphylococcus aureus in vivo, while without causing significant biotoxicity. This system provides a therapeutic method with low resistance and in situ diagnosis capability for efficiently eliminating bacteria.
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Affiliation(s)
- Zhangkun Liu
- Molecular Science and Biomedicine LaboratoryState Key Laboratory of Chemo/Biosensing and ChemometricsCollege of Chemistry and Chemical EngineeringCollege of BiologyAptamer Engineering Center of Hunan ProvinceHunan UniversityChangsha410082China
| | - Shengkai Li
- Molecular Science and Biomedicine LaboratoryState Key Laboratory of Chemo/Biosensing and ChemometricsCollege of Chemistry and Chemical EngineeringCollege of BiologyAptamer Engineering Center of Hunan ProvinceHunan UniversityChangsha410082China
| | - Zhiwei Yin
- Molecular Science and Biomedicine LaboratoryState Key Laboratory of Chemo/Biosensing and ChemometricsCollege of Chemistry and Chemical EngineeringCollege of BiologyAptamer Engineering Center of Hunan ProvinceHunan UniversityChangsha410082China
| | - Zhaotian Zhu
- Molecular Science and Biomedicine LaboratoryState Key Laboratory of Chemo/Biosensing and ChemometricsCollege of Chemistry and Chemical EngineeringCollege of BiologyAptamer Engineering Center of Hunan ProvinceHunan UniversityChangsha410082China
| | - Long Chen
- Faculty of Science and TechnologyUniversity of MacauTaipaMacau999078China
| | - Weihong Tan
- Molecular Science and Biomedicine LaboratoryState Key Laboratory of Chemo/Biosensing and ChemometricsCollege of Chemistry and Chemical EngineeringCollege of BiologyAptamer Engineering Center of Hunan ProvinceHunan UniversityChangsha410082China
- The Cancer Hospital of the University of Chinese Academy of Sciences (Zhejiang Cancer Hospital)Institute of Basic Medicine and CancerChinese Academy of SciencesHangzhou310022China
| | - Zhuo Chen
- Molecular Science and Biomedicine LaboratoryState Key Laboratory of Chemo/Biosensing and ChemometricsCollege of Chemistry and Chemical EngineeringCollege of BiologyAptamer Engineering Center of Hunan ProvinceHunan UniversityChangsha410082China
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15
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Structural stability of biofilms produced from silkworm cocoon fibers. JOURNAL OF THE SERBIAN CHEMICAL SOCIETY 2022. [DOI: 10.2298/jsc210611054f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Biofilms were obtained from cocoons of the silkworm, Bombyx mori, involving the removal of sericin, extraction and solubilization of fibroin fibers, dialysis of fibroin dispersions and preparation of biofilms by the casting process. Biofilm transparency was verified by UV?Vis spectroscopy and thermal stability by thermogravimetric/differential scanning calorimetry (TG/DSC). Soon after preparation, the solidification of the fibroin solution prepared from the cocoons and extracted by the Ajisawa method was monitored until the biofilm stabilized, using attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR) as a function of time. The results showed that there was a change in the conformation from the silk I structure (?-helix) to silk II (?-sheet). In order to improve the characterization of the biofilms obtained by the Ajisawa method and LiBr solubilization of fibroin fibers, Raman spectroscopy was used to verify the stabilization of the different possible molecular conformations for the fibers in these materials, by comparison with the cocoon spectra and those of the solid (freeze-dried precipitated by dialysis for 72 h. By comparing the Raman spectra of the biofilms in terms of the intensities of the broadened band characteristic of amide I, it was possible to assess the conformational changes in both materials based on the possible transitions between ?-sheet conformations and flexible ?-helix and ?-turn structures. The results showed a dispersion of these conformations in the biofilms generated and in the solid freeze-dried hydrogel spectrum, and the ?-sheet conformation was found to be predominant. The TG and DSC curves showed that the materials with higher ?-sheet content exhibited higher thermal stability. Thus, the data obtained further elucidated the properties of these materials that are widely used in various processes.
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Sammi A, Divya, Mahapatra S, Kumar R, Chandra P. Nano-Bio-engineered Silk Matrix based Devices for Molecular Bioanalysis. Biotechnol Bioeng 2021; 119:784-806. [PMID: 34958139 DOI: 10.1002/bit.28021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 12/05/2021] [Accepted: 12/21/2021] [Indexed: 11/08/2022]
Abstract
Silk is a fibrous protein, has been a part of human lives for centuries and was used as suture and textile material. Silk is mainly produced by members of certain arthropods such as spiders, butterflies, mites, and moths. However, recent technological advances have revolutionized silk as a biomaterial for various applications ranging from heat sensors to robust fibers. The biocompatibility, mechanical resilience, and biodegradability of the material make it a suitable candidate for biomaterials. Silk can also be easily converted into several morphological forms, including fibers, films, sponges, and hydrogels. Provided these abilities, silk have received excellent traction from scientists worldwide for various developments, one of them being its use as a bio-sensor. The diversity of silk materials offers various options, giving scientists the freedom to choose from and personalize them as per their needs. In this review, we foremost look upon the composition, production, properties, and various morphologies of silk. The numerous applications of silk and its derivatives for fabricating biosensors to detect small molecules, macromolecules, and cells have been explored comprehensively. Also, the data from various globally developed sensors using silk have been described into organized tables for each category of molecules, along with their important analytical details. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Aditi Sammi
- Laboratory of Bio-Physio Sensors and Nanobioengineering, School of Biochemical Engineering, Indian Institute of Technology (BHU) Varanasi, Varanasi, Uttar Pradesh, 221005, India
| | - Divya
- Laboratory of Bio-Physio Sensors and Nanobioengineering, School of Biochemical Engineering, Indian Institute of Technology (BHU) Varanasi, Varanasi, Uttar Pradesh, 221005, India
| | - Supratim Mahapatra
- Laboratory of Bio-Physio Sensors and Nanobioengineering, School of Biochemical Engineering, Indian Institute of Technology (BHU) Varanasi, Varanasi, Uttar Pradesh, 221005, India
| | - Rahul Kumar
- Laboratory of Bio-Physio Sensors and Nanobioengineering, School of Biochemical Engineering, Indian Institute of Technology (BHU) Varanasi, Varanasi, Uttar Pradesh, 221005, India
| | - Pranjal Chandra
- Laboratory of Bio-Physio Sensors and Nanobioengineering, School of Biochemical Engineering, Indian Institute of Technology (BHU) Varanasi, Varanasi, Uttar Pradesh, 221005, India
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17
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Enzymatically Crosslinked In Situ Synthesized Silk/Gelatin/Calcium Phosphate Hydrogels for Drug Delivery. MATERIALS 2021; 14:ma14237191. [PMID: 34885345 PMCID: PMC8658330 DOI: 10.3390/ma14237191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 11/15/2021] [Accepted: 11/22/2021] [Indexed: 11/17/2022]
Abstract
Our research focuses on combining the valuable properties of silk fibroin (SF) and calcium phosphate (CaP). SF is a natural protein with an easily modifiable structure; CaP is a mineral found in the human body. Most of the new age biocomposites lack interaction between organic/inorganic phase, thus SF/CaP composite could not only mimic the natural bone, but could also be used to make drug delivery systems as well, which can ensure both healing and regeneration. CaP was synthesized in situ in SF at different pH values, and then crosslinked with gelatin (G), horseradish peroxide (HRP), and hydrogen peroxide (H2O2). In addition, dexamethasone phosphate (DEX) was incorporated in the hydrogel and drug delivery kinetics was studied. Hydrogel made at pH 10.0 was found to have the highest gel fraction 110.24%, swelling degree 956.32%, and sustained drug delivery for 72 h. The highest cell viability was observed for the hydrogel, which contained brushite (pH 6)-512.43%.
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18
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Yang Z, Zhang J. Bioinspired Radiative Cooling Structure with Randomly Stacked Fibers for Efficient All-Day Passive Cooling. ACS APPLIED MATERIALS & INTERFACES 2021; 13:43387-43395. [PMID: 34468118 DOI: 10.1021/acsami.1c12267] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Without the help of compression-based cooling systems, natural creatures have to make use of other things to decrease their body temperature to survive under thermally harsh conditions. This work finds that the silkworm cocoon of Bombyx mori protects pupae from the rapid temperature fluctuations via the randomly stacked silk fibers, which possess high solar reflectance and thermal emittance for thermal regulation. Inspired by this microstructure, the melt-blown polypropylene (MB-PP) with randomly stacked fibers is fabricated by a large-scale melt-blown fabrication method. For enhancing the thermal emittance of MB-PP, the surface-modified MB-PP (SMB-PP) is obtained by constructing the poly(dimethylsiloxane) film on the MB-PP. As the reason for its high solar reflectance (∼95%) and thermal emittance (∼0.82), the SMB-PP displays subambient temperature drops of 4 °C in the daytime and 5 °C in the nighttime, respectively. Moreover, building energy simulation indicates that the SMB-PP could save ∼132 GJ (∼58.1% of the baseline energy consumption) for 1 year in the contiguous United States. Overall, the bioinspired structures offer a novel pathway out of cooling buildings, showing great promising application prospects in zero-energy buildings.
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Affiliation(s)
- Zhangbin Yang
- College of Materials Science & Engineering, Nanjing Tech University, Nanjing 211816, China
- Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing 211816, China
| | - Jun Zhang
- College of Materials Science & Engineering, Nanjing Tech University, Nanjing 211816, China
- Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing 211816, China
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19
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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
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20
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Mann A, Lydon F, Tighe BJ, Suzuki S, Chirila TV. A study of the permeation and water-structuring behavioural properties of PEG modified hydrated silk fibroin membranes. Biomed Phys Eng Express 2021; 7. [PMID: 33930887 DOI: 10.1088/2057-1976/abfd82] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Accepted: 04/30/2021] [Indexed: 12/19/2022]
Abstract
The potential of naturally occurring substances as a source of biomedical materials is well-recognised and is being increasingly exploited. Silk fibroin membranes derived fromBombyx morisilk cocoons exemplify this, for example as substrata for the growth of ocular cells with the aim of generating biomaterial-cell constructs for tissue engineering. This study investigated the transport properties of selected silk fibroin membranes under conditions that allowed equilibrium hydration of the membranes to be maintained. The behaviour of natural fibroin membranes was compared with fibroin membranes that have been chemically modified with poly(ethylene glycol). The permeation of the smaller hydrated sodium ion was higher than that of the hydrated calcium ion for all three ethanol treated membranes investigated. The PEG and HRP-modified C membrane, which had the highest water content at 59.6 ± 1.5% exhibited the highest permeation of the three membranes at 95.7 ± 2.8 × 10-8cm2s-1compared with 17.9 ± 0.9 × 10-8cm2s-1and 8.7 ± 1.7 × 10-8cm2s-1for membranes A and B respectively for the NaCl permeant. Poly(ethylene glycol) was used to increase permeability while exploiting the crosslinking capabilities of horseradish peroxidase to increase the compressive strength of the membrane. Importantly, we have established that the permeation behaviour of water-soluble permeants with hydrated radii in the sub-nanometer range is analogous to that of conventional hydrogel polymers.
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Affiliation(s)
- Aisling Mann
- Biomaterials Research Unit, Chemical Engineering and Applied Chemistry, College of Engineering and Physical Sciences, Aston University, Birmingham, B4 7ET, United Kingdom
| | - Fiona Lydon
- Biomaterials Research Unit, Chemical Engineering and Applied Chemistry, College of Engineering and Physical Sciences, Aston University, Birmingham, B4 7ET, United Kingdom
| | - Brian J Tighe
- Biomaterials Research Unit, Chemical Engineering and Applied Chemistry, College of Engineering and Physical Sciences, Aston University, Birmingham, B4 7ET, United Kingdom
| | - Shuko Suzuki
- Queensland Eye Institute, South Brisbane, Queensland 4101, Australia
| | - Traian V Chirila
- Queensland Eye Institute, South Brisbane, Queensland 4101, Australia.,Science & Engineering Faculty, Queensland University of Technology, Brisbane, Queensland 4001, Australia.,Faculty of Medicine, University of Queensland, Herston, Queensland 4029, Australia.,Australian Institute for Bioengineering and Nanotechnology, University of Queensland, St Lucia, Queensland 4072, Australia.,Faculty of Science, University of Western Australia, Crawley, Western Australia 6009, Australia
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21
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Wang HY, Zhang YQ, Wei ZG. Dissolution and processing of silk fibroin for materials science. Crit Rev Biotechnol 2021; 41:406-424. [PMID: 33749463 DOI: 10.1080/07388551.2020.1853030] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
In recent decades, silk fibroin (SF) from silkworm Bombyx mori has been extensively researched and applied in several fields, including: cosmetics, biomedicine and biomaterials. The dissolution and regeneration of SF fibers is the key and prerequisite step for the application of silk protein-based materials. Various solvents and dissolving systems have been reported to dissolve SF fibers. However, the dissolution process directly affects the characteristics of SF and particularly impacts the mechanical properties of the resulting silk biomaterials in subsequent processing. The purpose of this review is to summarize the common solvents, the dissolution methods for silk protein, the properties of the resulting SF protein. The suitable use of SF dissolved in the corresponding solvent was also briefly introduced. Recent applications of SF in various biomaterials are also discussed.
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Affiliation(s)
- Hai-Yan Wang
- Silk Biotechnology Laboratory, School of Biology and Basic Medical Sciences, Soochow University, Suzhou, China
| | - Yu-Qing Zhang
- Silk Biotechnology Laboratory, School of Biology and Basic Medical Sciences, Soochow University, Suzhou, China
| | - Zheng-Guo Wei
- Silk Biotechnology Laboratory, School of Biology and Basic Medical Sciences, Soochow University, Suzhou, China
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22
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Farokhi M, Aleemardani M, Solouk A, Mirzadeh H, Teuschl AH, Redl H. Crosslinking strategies for silk fibroin hydrogels: promising biomedical materials. Biomed Mater 2021; 16:022004. [PMID: 33594992 DOI: 10.1088/1748-605x/abb615] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Due to their strong biomimetic potential, silk fibroin (SF) hydrogels are impressive candidates for tissue engineering, due to their tunable mechanical properties, biocompatibility, low immunotoxicity, controllable biodegradability, and a remarkable capacity for biomaterial modification and the realization of a specific molecular structure. The fundamental chemical and physical structure of SF allows its structure to be altered using various crosslinking strategies. The established crosslinking methods enable the formation of three-dimensional (3D) networks under physiological conditions. There are different chemical and physical crosslinking mechanisms available for the generation of SF hydrogels (SFHs). These methods, either chemical or physical, change the structure of SF and improve its mechanical stability, although each method has its advantages and disadvantages. While chemical crosslinking agents guarantee the mechanical strength of SFH through the generation of covalent bonds, they could cause some toxicity, and their usage is not compatible with a cell-friendly technology. On the other hand, physical crosslinking approaches have been implemented in the absence of chemical solvents by the induction of β-sheet conformation in the SF structure. Unfortunately, it is not easy to control the shape and properties of SFHs when using this method. The current review discusses the different crosslinking mechanisms of SFH in detail, in order to support the development of engineered SFHs for biomedical applications.
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Affiliation(s)
- Maryam Farokhi
- Biomedical Engineering Department, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran. Maryam Farokhi and Mina Aleemardani contributed equally
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23
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Characterization of undegraded and degraded silk fibroin and its significant impact on the properties of the resulting silk biomaterials. Int J Biol Macromol 2021; 176:578-588. [PMID: 33607133 DOI: 10.1016/j.ijbiomac.2021.02.100] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 02/01/2021] [Accepted: 02/13/2021] [Indexed: 01/26/2023]
Abstract
The silk fibroin (SF) regeneration process significantly affects the resulting biomaterials, unfortunately, there has been insufficient study regarding the most suitable regeneration method for SF. In this study, we prepared undegraded SF (uSF) and degraded SF (dSF) by common regeneration methods and studied their difference in detail. The results demonstrated that the degradation degree of SF peptide chain had little influence on the secondary structure and thermal stability of SF materials. While, uSF solution showed higher viscosity and surface tension than dSF solution. The uSF membrane (uSFM) could be elongated approximately 134%, 1.6 times the degraded SF membrane (dSFM). SEM implied that both uSF and dSF existed in aqueous solution as micelles with a diameter of approximately 30 nm. dSF could directly form SF nanoparticles (dSFNPs) when poured into acetone while uSF could only form nanoparticles (uSFNP) with the addition of SDS. Glucose oxidase embedded into dSFM and dSFNP showed high catalytic activities, but uSFNP demonstrated nearly no activity. In addition, the dSFM was more appropriate for L929 cell culture. Considering the obvious difference between the two SF proteins, our results are significant in guiding the application of appropriate SF proteins in tissue engineering materials, bioactive materials, bioink, etc.
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24
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Zhang Q, Peng B, Zhao Y, Li C, Zhu S, Shi K, Zhou Z, Zhang X, Liu M, Pan J. Flexible CoFeB/Silk Films for Biocompatible RF/Microwave Applications. ACS APPLIED MATERIALS & INTERFACES 2020; 12:51654-51661. [PMID: 33141550 DOI: 10.1021/acsami.0c15530] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Aiming to realize the integration of signal processing with the human body, wearable and implantable radio frequency (RF)/microwave devices are rapidly developed. However, the insufficiency in skin commonality and biocompatibility brings up challenges in making such devices. In this study, an ultra-flexible and biocompatible CoFeB/silk film is developed potentially for on-skin and implantable RF/microwave applications. Moreover, the CoFeB/silk films present controllable dissolvability in aqueous solutions and exhibit great potentials in applications for environmentally friendly disposable devices. A strain-tunable bandstop filter based on the CoFeB/silk film was fabricated, which exhibited a large frequency tunability of 3 GHz and ability in monitoring the finger-joints' motions. This concept and method of combining ferromagnetic materials with the biocompatible substrate offers a novel pathway for wearable/implantable applications.
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Affiliation(s)
- Qi Zhang
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, PR China
| | - Bin Peng
- Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China
| | - Yanan Zhao
- Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China
| | - Chunlei Li
- Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China
| | - Shukai Zhu
- Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China
| | - Keqing Shi
- Department of Intensive Care, Precision Medicine Center Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, PR China
| | - Ziyao Zhou
- Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China
| | - Xiaohui Zhang
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, PR China
| | - Ming Liu
- Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China
| | - Jingye Pan
- Department of Intensive Care, Precision Medicine Center Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, PR China
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25
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Silk fibroin/collagen 3D scaffolds loaded with TiO2 nanoparticles for skin tissue regeneration. Polym Bull (Berl) 2020. [DOI: 10.1007/s00289-020-03475-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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26
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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.
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27
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Parushuram N, Ranjana R, Narayana B, Mahendra M, Sangappa Y. Facile fabrication of silk fibroin microparticles: their characterization and potential adsorption study. J DISPER SCI TECHNOL 2020. [DOI: 10.1080/01932691.2020.1774383] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- N. Parushuram
- Department of Studies in Physics, Mangalore University, Mangalore, Karnataka, India
| | - R. Ranjana
- Department of Studies in Physics, Mangalore University, Mangalore, Karnataka, India
| | - B. Narayana
- Department of Studies in Chemistry, Mangalore University, Mangalore, Karnataka, India
| | - M. Mahendra
- Department of Studies in Physics, University of Mysore, Mysore, Karnataka, India
| | - Y. Sangappa
- Department of Studies in Physics, Mangalore University, Mangalore, Karnataka, India
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28
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Yao Y, Allardyce BJ, Rajkhowa R, Hegh D, Sutti A, Subianto S, Gupta S, Rana S, Greenhill S, Venkatesh S, Wang X, Razal JM. Improving the Tensile Properties of Wet Spun Silk Fibers Using Rapid Bayesian Algorithm. ACS Biomater Sci Eng 2020; 6:3197-3207. [DOI: 10.1021/acsbiomaterials.0c00156] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Ya Yao
- Deakin University, Institute for Frontier Materials, Geelong, Victoria, Australia 3216
| | | | - Rangam Rajkhowa
- Deakin University, Institute for Frontier Materials, Geelong, Victoria, Australia 3216
| | - Dylan Hegh
- Deakin University, Institute for Frontier Materials, Geelong, Victoria, Australia 3216
| | - Alessandra Sutti
- Deakin University, Institute for Frontier Materials, Geelong, Victoria, Australia 3216
| | - Surya Subianto
- Deakin University, Institute for Frontier Materials, Geelong, Victoria, Australia 3216
| | - Sunil Gupta
- Deakin University, Applied Artificial Intelligence Institute (A2I2), Geelong, Victoria, Australia 3216
| | - Santu Rana
- Deakin University, Applied Artificial Intelligence Institute (A2I2), Geelong, Victoria, Australia 3216
| | - S. Greenhill
- Deakin University, Applied Artificial Intelligence Institute (A2I2), Geelong, Victoria, Australia 3216
| | - Svetha Venkatesh
- Deakin University, Applied Artificial Intelligence Institute (A2I2), Geelong, Victoria, Australia 3216
| | - Xungai Wang
- Deakin University, Institute for Frontier Materials, Geelong, Victoria, Australia 3216
| | - Joselito M. Razal
- Deakin University, Institute for Frontier Materials, Geelong, Victoria, Australia 3216
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29
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Abstract
Silk is a natural polymer sourced mainly from spiders and silkworms. Due to its biocompatibility, biodegradability, and mechanical properties, it has been heavily investigated for biomedical applications. It can be processed into a number of formats, such as scaffolds, films, and nanoparticles. Common methods of production create constructs with limited complexity. 3D printing allows silk to be printed into more intricate designs, increasing its potential applications. Extrusion and inkjet printing are the primary ways silk has been 3D printed, though other methods are beginning to be investigated. Silk has been integrated into bioink with other polymers, both natural and synthetic. The addition of silk is primarily done to offer more desirable viscosity characteristics and mechanical properties for printing. Silk-based bioinks have been used to fabricate medical devices and tissues. This article discusses recent research and printing parameters important for 3D printing with silk.
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Affiliation(s)
- Megan K DeBari
- Material Science and Engineering Department, Carnegie Mellon University, Pittsburgh, PA, USA
| | - Mia N Keyser
- Biomedical Engineering Department, Carnegie Mellon University, Pittsburgh, PA, USA
| | - Michelle A Bai
- Biomedical Engineering Department, Carnegie Mellon University, Pittsburgh, PA, USA
| | - Rosalyn D Abbott
- Biomedical Engineering Department, Carnegie Mellon University, Pittsburgh, PA, USA
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Li Z, Song J, Zhang J, Hao K, Liu L, Wu B, Zheng X, Xiao B, Tong X, Dai F. Topical application of silk fibroin-based hydrogel in preventing hypertrophic scars. Colloids Surf B Biointerfaces 2019; 186:110735. [PMID: 31865120 DOI: 10.1016/j.colsurfb.2019.110735] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 12/02/2019] [Accepted: 12/15/2019] [Indexed: 01/10/2023]
Abstract
Current medications for the treatment of hypertrophic scars suffer from bottlenecks of limited therapeutic efficacy and a slow recovery rate. Silk fibroin (SF) has gained attention for its ability to promote wound healing in burns and cutaneous wounds, but its therapeutic effects against hypertrophic scar have not been thoroughly investigated. We prepared SF-based hydrogels (SFHs) with various SF concentrations (1.5 %, 3 %, and 6 %) and characterized their physicochemical properties. Cell experiments showed that these SFHs had favorable biocompatibility in vitro. Further animal experiments in rabbits revealed that the SFH (3 %)-treated group achieved scars on their ears that were thinner and significantly lighter in color compared with the negative control group. Moreover, treatment with SFHs reduced the density and led to the orderly arrangement of collagen fibers. It was found that the therapeutic effects of SFHs were attributed to the reduced expression levels of α-smooth muscle actin. These results are the first to demonstrate that SFH can be exploited as an effective therapeutic agent for the treatment of hypertrophic scars.
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Affiliation(s)
- Zheng Li
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory for Sericulture Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Biotechnology, Southwest University, Chongqing 400716, China
| | - Jiangbo Song
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory for Sericulture Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Biotechnology, Southwest University, Chongqing 400716, China
| | - Jianfei Zhang
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory for Sericulture Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Biotechnology, Southwest University, Chongqing 400716, China
| | - Kaige Hao
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory for Sericulture Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Biotechnology, Southwest University, Chongqing 400716, China
| | - Lian Liu
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory for Sericulture Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Biotechnology, Southwest University, Chongqing 400716, China
| | - Baiqing Wu
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory for Sericulture Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Biotechnology, Southwest University, Chongqing 400716, China
| | - Xinyue Zheng
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory for Sericulture Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Biotechnology, Southwest University, Chongqing 400716, China
| | - Bo Xiao
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory for Sericulture Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Biotechnology, Southwest University, Chongqing 400716, China
| | - Xiaoling Tong
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory for Sericulture Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Biotechnology, Southwest University, Chongqing 400716, China
| | - Fangyin Dai
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory for Sericulture Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Biotechnology, Southwest University, Chongqing 400716, China.
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Brif A, Laity P, Claeyssens F, Holland C. Dynamic Photo-cross-linking of Native Silk Enables Macroscale Patterning at a Microscale Resolution. ACS Biomater Sci Eng 2019; 6:705-714. [DOI: 10.1021/acsbiomaterials.9b00993] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Anastasia Brif
- Department of Materials Science and Engineering, University of Sheffield, Sir Robert Hadfield Building, Mappin Street, Sheffield, S1 3JD, U.K
- Department of Materials Science and Engineering, Kroto Research Institute, University of Sheffield, Broad Lane, Sheffield S3 7HQ, U.K
| | - Peter Laity
- Department of Materials Science and Engineering, University of Sheffield, Sir Robert Hadfield Building, Mappin Street, Sheffield, S1 3JD, U.K
| | - Frederik Claeyssens
- Department of Materials Science and Engineering, Kroto Research Institute, University of Sheffield, Broad Lane, Sheffield S3 7HQ, U.K
| | - Chris Holland
- Department of Materials Science and Engineering, University of Sheffield, Sir Robert Hadfield Building, Mappin Street, Sheffield, S1 3JD, U.K
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Yang K, Yazawa K, Tsuchiya K, Numata K, Guan J. Molecular Interactions and Toughening Mechanisms in Silk Fibroin–Epoxy Resin Blend Films. Biomacromolecules 2019; 20:2295-2304. [DOI: 10.1021/acs.biomac.9b00260] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Kang Yang
- International Research Center for Advanced Structural and Biomaterials, School of Materials Science and Engineering, Beihang University, Beijing 100191, China
- Biomacromolecules Research Team, RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan
| | - Kenjiro Yazawa
- Biomacromolecules Research Team, RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan
| | - Kousuke Tsuchiya
- Biomacromolecules Research Team, RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan
| | - Keiji Numata
- Biomacromolecules Research Team, RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan
| | - Juan Guan
- International Research Center for Advanced Structural and Biomaterials, School of Materials Science and Engineering, Beihang University, Beijing 100191, China
- Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing 100083, China
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Karimi S, Moradipour P, Azandaryani AH, Arkan E. Amphotericin-B and vancomycin-loaded chitosan nanofiber for antifungal and antibacterial application. BRAZ J PHARM SCI 2019. [DOI: 10.1590/s2175-97902019000117115] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Affiliation(s)
| | | | | | - Elham Arkan
- Kermanshah University of Medical Sciences, Iran
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35
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Li S, Chen C, Zhang D, Zhang X, Sun B, Lv S. Microwave-assisted fast and efficient dissolution of silkworm silk for constructing fibroin-based biomaterials. Chem Eng Sci 2018. [DOI: 10.1016/j.ces.2018.06.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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Susanin AI, Sashina ES, Zakharov VV, Zaborski M, Kashirskii DA. Conformational Transitions of Silk Fibroin in Solutions under the Action of Ultrasound. RUSS J APPL CHEM+ 2018. [DOI: 10.1134/s1070427218070194] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Callaway KA, Xue Y, Altimari V, Jiang G, Hu X. Comparative Investigation of Thermal and Structural Behavior in Renewably Sourced Composite Films of Even-Even Nylons (610 and 1010) with Silk Fibroin. Polymers (Basel) 2018; 10:E1029. [PMID: 30960954 PMCID: PMC6403926 DOI: 10.3390/polym10091029] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2018] [Revised: 09/10/2018] [Accepted: 09/14/2018] [Indexed: 01/12/2023] Open
Abstract
As the average life expectancy continues to increase, so does the need for resorbable materials designed to treat, augment, or replace components and functions of the body. Naturally occurring biopolymers such as silks are already attractive candidates due to natural abundance and high biocompatibility accompanied by physical properties which are easily modulated through blending with another polymer. In this paper, the authors report on the fabrication of biocomposite materials made from binary blends of Bombyx mori silk fibroin (SF) protein and renewably sourced low molecular weight nylon 610 and high molecular weight nylon 1010. Films were characterized using scanning electron microscopy (SEM), Fourier-transform infrared (FTIR) spectroscopy, differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). Results of this study demonstrated that enhanced structural and thermal properties were achievable in composite films SF-N610/N1010 due to their chemical similarity and the possible formation of hydrogen bonds between nylon and silk molecular chains. This study provides useful insight into the sustainable design of functional composite materials for biomedical and green technologies.
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Affiliation(s)
- Kayla A Callaway
- Department of Physics & Astronomy, Rowan University, Glassboro, NJ 08028, USA.
| | - Ye Xue
- Department of Biomedical Engineering, Rowan University, Glassboro, NJ 08028, USA.
| | - Vincent Altimari
- Department of Physics & Astronomy, Rowan University, Glassboro, NJ 08028, USA.
| | - Guoxiang Jiang
- Department of Physics & Astronomy, Rowan University, Glassboro, NJ 08028, USA.
| | - Xiao Hu
- Department of Physics & Astronomy, Rowan University, Glassboro, NJ 08028, USA.
- Department of Biomedical Engineering, Rowan University, Glassboro, NJ 08028, USA.
- Department of Molecular and Cellular Biosciences, Rowan University, Glassboro, NJ 08028, USA.
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Thai silk fibroin gelation process enhancing by monohydric and polyhydric alcohols. Int J Biol Macromol 2018; 118:1726-1735. [PMID: 30017976 DOI: 10.1016/j.ijbiomac.2018.07.017] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Revised: 07/04/2018] [Accepted: 07/05/2018] [Indexed: 02/06/2023]
Abstract
Silk fibroin hydrogel is an interesting natural material in various biomedical applications. However, the self-assembled gelation takes a long time. In this work, different alcohol types are used as gelation enhancers for aqueous silk fibroin solution. Monohydric alcohols having carbon chain length from C1 to C4 and polyhydric alcohols with the number of mono- to tri- hydroxyl groups were used as the enhancers which are effective for rapid gelation. The addition of monohydric alcohol distinctively reduced the gelation time, comparing to the polyhydric alcohol. The gelation process is directly dependent on the polarity of alcohol and hydrophobicity. The alcohol mediated gelation imparts strong viscoelastic property and enhanced compressive modulus of resulting hydrogels. This is due to the effective formation of self-assembled beta sheet network of the silk fibroin chains facilitates the gelation process.
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Fan L, Li JL, Cai Z, Wang X. Creating Biomimetic Anisotropic Architectures with Co-Aligned Nanofibers and Macrochannels by Manipulating Ice Crystallization. ACS NANO 2018; 12:5780-5790. [PMID: 29846058 DOI: 10.1021/acsnano.8b01648] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
The continuous evolution of tissue engineering scaffolds has been driven by the desire to recapitulate structural features and functions of the natural extracellular matrix (ECM). However, it is still an extreme challenge to create a three-dimensional (3D) scaffold with both aligned nanofibers and aligned interconnected macrochannels to mimic the ECM of anisotropic tissues. Here, we develop a facile strategy to create such a scaffold composed of oriented nanofibers and interconnected macrochannels in the same direction, with various natural polymers typically used for tissue regeneration. The orientation of nanofibers and interconnected macrochannels can be easily tuned by manipulating ice crystallization. The scaffold demonstrates both structural and functional features similar to the natural ECM of anisotropic tissues. Taking silk fibroin as an example, the scaffold with radially oriented nanofibers and interconnected macrochannels is more efficient for capturing cells and promoting the growth of both nonadherent embryonic dorsal root ganglion neurons (DRGs) and adherent human umbilical vein endothelial cells (HUVECs) compared to the widely used scaffold types. Interestingly, DRGs and neurites on the SF scaffold demonstrate a 3D growth mode similar to that of natural nerve tissues. Furthermore, the coaligned nanofibers and macrochannels of the scaffold can direct HUVECs to assemble into blood vessel-like structures and their collagen deposition in their arrangement direction. The strategy could inspire the design and development of multifunctional 3D scaffolds with desirable structural features for engineering different tissues.
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Affiliation(s)
- Linpeng Fan
- Institute for Frontier Materials , Deakin University , Geelong , Victoria 3216 , Australia
| | - Jing-Liang Li
- Institute for Frontier Materials , Deakin University , Geelong , Victoria 3216 , Australia
| | - Zengxiao Cai
- Institute for Frontier Materials , Deakin University , Geelong , Victoria 3216 , Australia
| | - Xungai Wang
- Institute for Frontier Materials , Deakin University , Geelong , Victoria 3216 , Australia
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Zhou B, Zhou Q, Wang P, Yuan J, Yu Y, Deng C, Wang Q, Fan X. HRP-mediated graft polymerization of acrylic acid onto silk fibroins and in situ biomimetic mineralization. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2018; 29:72. [PMID: 29796746 DOI: 10.1007/s10856-018-6084-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Accepted: 05/04/2018] [Indexed: 06/08/2023]
Abstract
Silk fibroin (SF) can be extensively utilized in biomedical areas owing to its appreciable bioactivity. In this study, biocompatible composites of SF and hydroxyapatite (HAp) were fabricated through in situ biomimetic mineralization process. Graft copolymerization of acrylic acid (AA) onto SF was conducted by using the catalytic system of acetylacetone (ACAC), hydrogen peroxide (H2O2) and horseradish peroxidase (HRP), for enhancing the deposition of apatite onto the fibroin chains. Subsequently, biomimetic mineralization of the prepared fibroin-based membrane was performed in Ca/P solutions to synthesize the organized SF/HAp composites. The efficacies of graft copolymerization and biomimetic mineralization were evaluated by means of ATR-FTIR, GPC, EDS-Mapping, XRD and others. The results denoted that AA was successfully graft-copolymerized with fibroin and formed the copolymer of silk fibroin-graft-polyacrylic acid (SF-g-PAA), and the grafting percentage (GP) and grafting efficiency (GE) under the optimal condition reached to 23.2% and 29.4%, respectively. More mineral phases were detected on the surface of SF-g-PAA membrane after mineralization process when compared to that of the untreated fibroin membrane, companying with an improved mechanical property. According to MG-63 cell viability and fluorescent adhesion assays, the mineralized SF-g-PAA composite showed satisfactory biocompatibility and exceptional adhesive effects as well. The synthetized composite of SF-g-PAA/HAp can be potentially applied in the fields of bone tissue engineering.
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Affiliation(s)
- Buguang Zhou
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, Jiangnan University, Wuxi, 214122, People's Republic of China
| | - Qian Zhou
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, Jiangnan University, Wuxi, 214122, People's Republic of China
| | - Ping Wang
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, Jiangnan University, Wuxi, 214122, People's Republic of China.
| | - Jiugang Yuan
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, Jiangnan University, Wuxi, 214122, People's Republic of China
| | - Yuanyuan Yu
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, Jiangnan University, Wuxi, 214122, People's Republic of China
| | - Chao Deng
- Wuxi Medical School, Jiangnan University, Wuxi, 214122, People's Republic of China
| | - Qiang Wang
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, Jiangnan University, Wuxi, 214122, People's Republic of China
| | - Xuerong Fan
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, Jiangnan University, Wuxi, 214122, People's Republic of China
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Panico A, Paladini F, Pollini M. Development of regenerative and flexible fibroin‐based wound dressings. J Biomed Mater Res B Appl Biomater 2018; 107:7-18. [DOI: 10.1002/jbm.b.34090] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Revised: 12/12/2017] [Accepted: 01/28/2018] [Indexed: 12/16/2022]
Affiliation(s)
- Angelica Panico
- Department of Engineering for InnovationUniversity of SalentoLecce Italy
| | - Federica Paladini
- Department of Engineering for InnovationUniversity of SalentoLecce Italy
- Caresilk S.r.l.s., Via Monteroni c/o Technological District DHITECHLecce, Italy
- CNR NANOTEC‐Institute of Nanotechnology c/o Campus EcotekneLecce Italy
| | - Mauro Pollini
- Department of Engineering for InnovationUniversity of SalentoLecce Italy
- Caresilk S.r.l.s., Via Monteroni c/o Technological District DHITECHLecce, Italy
- CNR NANOTEC‐Institute of Nanotechnology c/o Campus EcotekneLecce Italy
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Zhang C, Shao H, Luo J, Hu X, Zhang Y. Structure and interaction of silk fibroin and graphene oxide in concentrated solution under shear. Int J Biol Macromol 2018; 107:2590-2597. [DOI: 10.1016/j.ijbiomac.2017.10.142] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Revised: 10/05/2017] [Accepted: 10/23/2017] [Indexed: 02/06/2023]
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Yoshioka T, Hata T, Kojima K, Nakazawa Y, Kameda T. Fabrication Scheme for Obtaining Transparent, Flexible, and Water-Insoluble Silk Films from Apparently Dissolved Silk-Gland Fibroin of Bombyx mori Silkworm. ACS Biomater Sci Eng 2017; 3:3207-3214. [DOI: 10.1021/acsbiomaterials.7b00602] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Taiyo Yoshioka
- Silk
Materials Research Unit, National Agriculture and Food Research Organization (NARO), 1-2 Ohwashi, Tsukuba, Ibaraki 305-8634, Japan
| | - Tamako Hata
- Silk
Materials Research Unit, National Agriculture and Food Research Organization (NARO), 1-2 Ohwashi, Tsukuba, Ibaraki 305-8634, Japan
| | - Katsura Kojima
- Silk
Materials Research Unit, National Agriculture and Food Research Organization (NARO), 1-2 Ohwashi, Tsukuba, Ibaraki 305-8634, Japan
| | - Yasumoto Nakazawa
- Division
of Biotechnology and Life Science, Graduate School of Engineering, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588, Japan
| | - Tsunenori Kameda
- Silk
Materials Research Unit, National Agriculture and Food Research Organization (NARO), 1-2 Ohwashi, Tsukuba, Ibaraki 305-8634, Japan
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Bhattacharjee P, Kundu B, Naskar D, Kim HW, Maiti TK, Bhattacharya D, Kundu SC. Silk scaffolds in bone tissue engineering: An overview. Acta Biomater 2017; 63:1-17. [PMID: 28941652 DOI: 10.1016/j.actbio.2017.09.027] [Citation(s) in RCA: 173] [Impact Index Per Article: 24.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Revised: 08/26/2017] [Accepted: 09/19/2017] [Indexed: 12/17/2022]
Abstract
Bone tissue plays multiple roles in our day-to-day functionality. The frequency of accidental bone damage and disorder is increasing worldwide. Moreover, as the world population continues to grow, the percentage of the elderly population continues to grow, which results in an increased number of bone degenerative diseases. This increased elderly population pushes the need for artificial bone implants that specifically employ biocompatible materials. A vast body of literature is available on the use of silk in bone tissue engineering. The current work presents an overview of this literature from materials and fabrication perspective. As silk is an easy-to-process biopolymer; this allows silk-based biomaterials to be molded into diverse forms and architectures, which further affects the degradability. This makes silk-based scaffolds suitable for treating a variety of bone reconstruction and regeneration objectives. Silk surfaces offer active sites that aid the mineralization and/or bonding of bioactive molecules that facilitate bone regeneration. Silk has also been blended with a variety of polymers and minerals to enhance its advantageous properties or introduce new ones. Several successful works, both in vitro and in vivo, have been reported using silk-based scaffolds to regenerate bone tissues or other parts of the skeletal system such as cartilage and ligament. A growing trend is observed toward the use of mineralized and nanofibrous scaffolds along with the development of technology that allows to control scaffold architecture, its biodegradability and the sustained releasing property of scaffolds. Further development of silk-based scaffolds for bone tissue engineering, taking them up to and beyond the stage of human trials, is hoped to be achieved in the near future through a cross-disciplinary coalition of tissue engineers, material scientists and manufacturing engineers. STATEMENT OF SIGNIFICANCE The state-of-art of silk biomaterials in bone tissue engineering, covering their wide applications as cell scaffolding matrices to micro-nano carriers for delivering bone growth factors and therapeutic molecules to diseased or damaged sites to facilitate bone regeneration, is emphasized here. The review rationalizes that the choice of silk protein as a biomaterial is not only because of its natural polymeric nature, mechanical robustness, flexibility and wide range of cell compatibility but also because of its ability to template the growth of hydroxyapatite, the chief inorganic component of bone mineral matrix, resulting in improved osteointegration. The discussion extends to the role of inorganic ions such as Si and Ca as matrix components in combination with silk to influence bone regrowth. The effect of ions or growth factor-loaded vehicle incorporation into regenerative matrix, nanotopography is also considered.
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Huang Y, Bailey K, Wang S, Feng X. Silk fibroin films for potential applications in controlled release. REACT FUNCT POLYM 2017. [DOI: 10.1016/j.reactfunctpolym.2017.05.007] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Su D, Yao M, Liu J, Zhong Y, Chen X, Shao Z. Enhancing Mechanical Properties of Silk Fibroin Hydrogel through Restricting the Growth of β-Sheet Domains. ACS APPLIED MATERIALS & INTERFACES 2017; 9:17489-17498. [PMID: 28470062 DOI: 10.1021/acsami.7b04623] [Citation(s) in RCA: 153] [Impact Index Per Article: 21.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Usually, regenerated silk fibroin (RSF) hydrogels cross-linked by chemical agents such as horseradish peroxide (HRP)/H2O2 perform elastic properties, while display unsatisfactory strength for practical applications especially as load-bearing materials, and inadequate stability when incubated in a simulated in vivo environment. Here, the RSF hydrogel with both excellent strength and elasticity was prepared by inducing the conformation transition from random coil to β-sheet in a restricted RSF network precross-linked by HRP/H2O2. Such "dual-networked" hydrogels, regarding the one with 10 wt % RSF (Mw: 220 kDa) as a representative, show around 100% elongation, as well as the compressive modulus and tensile modulus up to 3.0 and 2.5 MPa respectively, which are much higher than those of physically cross-linked natural polymer hydrogels (commonly within 0.01-0.1 MPa at the similar solid content). It has been shown that the enhanced comprehensive mechanical properties of RSF hydrogels derive from the formation of small-sized and uniformly distributed β-sheet domains in the hydrogel during the conformation transition of RSF whose size is limited by the first network formed by cross-linkers with HRP/H2O2. Importantly, the tough RSF hydrogel changes the normally weak recognition of various RSF hydrogels and holds a great potential to be the material in biomedical field because it seems to be very promising regarding its biocompatibility, biodegradability, etc.
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Affiliation(s)
- Dihan Su
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science and Laboratory of Advanced Materials, Fudan University , Shanghai 200433, P.R. China
| | - Meng Yao
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science and Laboratory of Advanced Materials, Fudan University , Shanghai 200433, P.R. China
| | - Jie Liu
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science and Laboratory of Advanced Materials, Fudan University , Shanghai 200433, P.R. China
| | - Yiming Zhong
- Fuels and Energy Technology Institute & Department of Chemical Engineering, Curtin University , Perth, Western Australia 6102, Australia
| | - Xin Chen
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science and Laboratory of Advanced Materials, Fudan University , Shanghai 200433, P.R. China
| | - Zhengzhong Shao
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science and Laboratory of Advanced Materials, Fudan University , Shanghai 200433, P.R. China
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Wang Q, Wang C, Zhang M, Jian M, Zhang Y. Feeding Single-Walled Carbon Nanotubes or Graphene to Silkworms for Reinforced Silk Fibers. NANO LETTERS 2016; 16:6695-6700. [PMID: 27623222 DOI: 10.1021/acs.nanolett.6b03597] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Silkworm silk is gaining significant attention from both the textile industry and research society because of its outstanding mechanical properties and lustrous appearance. The possibility of creating tougher silks attracts particular research interest. Carbon nanotubes and graphene are widely studied for their use as reinforcement. In this work, we report mechanically enhanced silk directly collected by feeding Bombyx mori larval silkworms with single-walled carbon nanotubes (SWNTs) and graphene. We found that parts of the fed carbon nanomaterials were incorporated into the as-spun silk fibers, whereas the others went into the excrement of silkworms. Spectroscopy study indicated that nanocarbon additions hindered the conformation transition of silk fibroin from random coil and α-helix to β-sheet, which may contribute to increased elongation at break and toughness modules. We further investigated the pyrolysis of modified silk, and a highly developed graphitic structure with obviously enhanced electrical conductivity was obtained through the introduction of SWNTs and graphene. The successful generation of these SWNT- or graphene-embedded silks by in vivo feeding is expected to open up possibilities for the large-scale production of high-strength silk fibers.
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Affiliation(s)
- Qi Wang
- Department of Chemistry and Center for Nano and Micro Mechanics, Tsinghua University , Beijing 100084, PR China
| | - Chunya Wang
- Department of Chemistry and Center for Nano and Micro Mechanics, Tsinghua University , Beijing 100084, PR China
| | - Mingchao Zhang
- Department of Chemistry and Center for Nano and Micro Mechanics, Tsinghua University , Beijing 100084, PR China
| | - Muqiang Jian
- Department of Chemistry and Center for Nano and Micro Mechanics, Tsinghua University , Beijing 100084, PR China
| | - Yingying Zhang
- Department of Chemistry and Center for Nano and Micro Mechanics, Tsinghua University , Beijing 100084, PR China
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48
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Pillai MM, Gopinathan J, Indumathi B, Manjoosha YR, Santosh Sahanand K, Dinakar Rai BK, Selvakumar R, Bhattacharyya A. Silk–PVA Hybrid Nanofibrous Scaffolds for Enhanced Primary Human Meniscal Cell Proliferation. J Membr Biol 2016; 249:813-822. [DOI: 10.1007/s00232-016-9932-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2016] [Accepted: 09/29/2016] [Indexed: 10/20/2022]
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Narayanan S, Gokuldas M. Influence of organic solvents on the structural and thermal characteristics of silk protein from the web of Orthaga exvinacea Hampson ( Lepidoptera: Pyralidae). J Chem Biol 2016; 9:121-125. [PMID: 27698949 DOI: 10.1007/s12154-016-0158-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Accepted: 08/12/2016] [Indexed: 11/30/2022] Open
Abstract
The silk protein from the web of Orthaga exvinacea was isolated, purified, and casted into films. This film was treated separately with methanol, acetone, ethyl acetate, and isopropyl alcohol in 50 % concentration for about 30 min. The treated films were thus dried in a desiccator and subjected to FTIR and TG-DTA analysis. The structural studies revealed that the organic solvents induce conformatory changes in the protein film, especially the most sensitive amide I (1650 cm-1) band. This band had shifted to lower wavenumber (1633-1636 cm-1). Furthermore, the conformatory characteristics associated with amide I band also changed from random coil to β-sheet. Generally, β-sheet contributes strength to the protein film. Among the treated films, film treated with acetone showed much thermal stability. Moreover, the film treated with methanol had shown two different temperatures of maximum degradation. It is concluded that in addition to β-sheet content, various other factors such as various processing conditions and structural organization of protein may influence the stability of the films.
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Affiliation(s)
- Sajitha Narayanan
- Insect Physiology and Biochemistry Laboratory, Department of Zoology, University of Calicut, Kerala, India 673 635
| | - Mankadath Gokuldas
- Insect Physiology and Biochemistry Laboratory, Department of Zoology, University of Calicut, Kerala, India 673 635
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Ngo HT, Bechtold T. Sorption behavior of reactive dyed labelled fibroin on fibrous substrates. J Appl Polym Sci 2016. [DOI: 10.1002/app.43880] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Ha-Thanh Ngo
- Research Institute of Textile Chemistry and Textile Physics; Faculty of Chemistry and Pharmacy; Leopold Franzens-Univeristy of Innsbruck; Hoechsterstraße 73 Dornbirn A-6850 Austria
| | - Thomas Bechtold
- Research Institute of Textile Chemistry and Textile Physics; Faculty of Chemistry and Pharmacy; Leopold Franzens-Univeristy of Innsbruck; Hoechsterstraße 73 Dornbirn A-6850 Austria
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