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Guo H, Ning Y, Zhang Y, Qin Y, Ren Z, Gu W, Mou J, Zhang M, Liu Z, Zhang Y, Zhang J, Yuan L. Wearable Fiber SPR Respiration Sensor Based on a LiBr-Doped Silk Fibroin Film. ACS Sens 2023; 8:4171-4178. [PMID: 37861795 DOI: 10.1021/acssensors.3c01414] [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] [Indexed: 10/21/2023]
Abstract
Respiration is essential for supporting human body functions. However, a biocompatible fiber respiration sensor has rarely been discussed. In this study, we propose a wearable fiber surface plasmon resonance (SPR) respiration sensor using a LiBr-doped silk fibroin (SF) film. The SPR sensor monitors respiration by responding to airway humidity variation during inhalation and exhalation. We fabricated the SPR respiration sensor by depositing the core of a plastic-clad optical fiber with a gold film and an SF-LiBr composite film. The SF-LiBr composite film can absorb water through the interaction between water molecules and hydrogen bonds linking fibroin chains. Thus, humidity variation can change the SF-LiBr composite film's refractive index (RI), altering the phase-matching condition of the surface plasmon polaritons and shifting the SPR spectral dip. In experiments, we test the effect of the LiBr doping ratio on humidity response and confirm that the SF-22.1 wt % LiBr sensor has balanced performances. The SF-22.1 wt % LiBr sensor has a broad sensing range of 35-99% relative humidity (RH), a reasonable overall sensitivity of -6.5 nm/% RH, a fast response time of 135 ms, a quick recovery time of 150 ms, good reversibility, and good repeatability, which is capable of tracking different respiration states and patterns. Finally, we encapsulate this sensor in a conventional nasal oxygen cannula for wearable respiration monitoring, proving that the sensor is suitable for high-sensitivity, real-time, and accurate respiration monitoring.
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Affiliation(s)
- Huigai Guo
- Key Laboratory of In-Fiber Integrated Optics, Ministry of Education, Harbin Engineering University, Harbin 150001, P. R. China
- Key Laboratory of Photonic Materials and Device Physics for Oceanic Applications, Ministry of Industry and Information Technology of China, Harbin Engineering University, Harbin 150001, P. R. China
- Research Center of Space Optical Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China
| | - Yangang Ning
- Key Laboratory of In-Fiber Integrated Optics, Ministry of Education, Harbin Engineering University, Harbin 150001, P. R. China
- Key Laboratory of Photonic Materials and Device Physics for Oceanic Applications, Ministry of Industry and Information Technology of China, Harbin Engineering University, Harbin 150001, P. R. China
- Research Center of Space Optical Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China
| | - Yu Zhang
- Key Laboratory of In-Fiber Integrated Optics, Ministry of Education, Harbin Engineering University, Harbin 150001, P. R. China
- Key Laboratory of Photonic Materials and Device Physics for Oceanic Applications, Ministry of Industry and Information Technology of China, Harbin Engineering University, Harbin 150001, P. R. China
| | - Yifan Qin
- Key Laboratory of In-Fiber Integrated Optics, Ministry of Education, Harbin Engineering University, Harbin 150001, P. R. China
- Key Laboratory of Photonic Materials and Device Physics for Oceanic Applications, Ministry of Industry and Information Technology of China, Harbin Engineering University, Harbin 150001, P. R. China
| | - Zhuo Ren
- Key Laboratory of In-Fiber Integrated Optics, Ministry of Education, Harbin Engineering University, Harbin 150001, P. R. China
- Key Laboratory of Photonic Materials and Device Physics for Oceanic Applications, Ministry of Industry and Information Technology of China, Harbin Engineering University, Harbin 150001, P. R. China
| | - Wenxuan Gu
- Key Laboratory of In-Fiber Integrated Optics, Ministry of Education, Harbin Engineering University, Harbin 150001, P. R. China
- Key Laboratory of Photonic Materials and Device Physics for Oceanic Applications, Ministry of Industry and Information Technology of China, Harbin Engineering University, Harbin 150001, P. R. China
| | - Jinhua Mou
- Key Laboratory of In-Fiber Integrated Optics, Ministry of Education, Harbin Engineering University, Harbin 150001, P. R. China
- Key Laboratory of Photonic Materials and Device Physics for Oceanic Applications, Ministry of Industry and Information Technology of China, Harbin Engineering University, Harbin 150001, P. R. China
| | - Min Zhang
- Key Laboratory of In-Fiber Integrated Optics, Ministry of Education, Harbin Engineering University, Harbin 150001, P. R. China
- Key Laboratory of Photonic Materials and Device Physics for Oceanic Applications, Ministry of Industry and Information Technology of China, Harbin Engineering University, Harbin 150001, P. R. China
- MOE Frontiers Center for Brain Science, State Key Laboratory of Medical Neurobiology, Institutes for Translational Brain Research, Fudan University, Shanghai 200032, P. R. China
| | - Zhihai Liu
- Key Laboratory of In-Fiber Integrated Optics, Ministry of Education, Harbin Engineering University, Harbin 150001, P. R. China
- Key Laboratory of Photonic Materials and Device Physics for Oceanic Applications, Ministry of Industry and Information Technology of China, Harbin Engineering University, Harbin 150001, P. R. China
| | - Yaxun Zhang
- Key Laboratory of In-Fiber Integrated Optics, Ministry of Education, Harbin Engineering University, Harbin 150001, P. R. China
- Key Laboratory of Photonic Materials and Device Physics for Oceanic Applications, Ministry of Industry and Information Technology of China, Harbin Engineering University, Harbin 150001, P. R. China
- Qingdao Innovation and Development Center, Harbin Engineering University, Qingdao 266500, P. R. China
| | - Jianzhong Zhang
- Key Laboratory of In-Fiber Integrated Optics, Ministry of Education, Harbin Engineering University, Harbin 150001, P. R. China
- Key Laboratory of Photonic Materials and Device Physics for Oceanic Applications, Ministry of Industry and Information Technology of China, Harbin Engineering University, Harbin 150001, P. R. China
| | - Libo Yuan
- Photonics Research Center, Guilin University of Electronics Technology, Guilin 541004, P. R. China
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Zou S, Yao X, Shao H, Reis RL, Kundu SC, Zhang Y. Nonmulberry silk fibroin-based biomaterials: Impact on cell behavior regulation and tissue regeneration. Acta Biomater 2022; 153:68-84. [PMID: 36113722 DOI: 10.1016/j.actbio.2022.09.021] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 08/28/2022] [Accepted: 09/08/2022] [Indexed: 11/01/2022]
Abstract
Silk fibroin (SF) is a promising biomaterial due to its good biocompatibility, easy availability, and high mechanical properties. Compared with mulberry silk fibroin (MSF), nonmulberry silk fibroin (NSF) isolated from typical nonmulberry silkworm silk exhibits unique arginine-glycine-aspartic acid (RGD) sequences with favorable cell adhesion enhancing effect. This inherent property probably makes the NSF more suitable for cell culture and tissue regeneration-related applications. Accordingly, various types of NSF-based biomaterials, such as particles, films, fiber mats, and 3D scaffolds, are constructed and their application potential in different biomedical fields is extensively investigated. Based on these promising NSF biomaterials, this review firstly makes a systematical comparison between the molecular structure and properties of MSF and typical NSF and highlights the unique properties of NSF. In addition, we summarize the effective fabrication strategies from degummed nonmulberry silk fibers to regenerated NSF-based biomaterials with controllable formats and their recent application progresses in cell behavior regulation and tissue regeneration. Finally, current challenges and future perspectives for the fabrication and application of NSF-based biomaterials are discussed. Related research and perspectives may provide valuable references for designing and modifying effective NSF-based and other natural biomaterials. STATEMENT OF SIGNIFICANCE: There exist many reviews about mulberry silk fibroin (MSF) biomaterials and their biomedical applications, while that about nonmulberry silk fibroin (NSF) biomaterials is scarce. Compared with MSF, NSF exhibits unique arginine-glycine-aspartic acid sequences with promising cell adhesion enhancing effect, which makes NSF more suitable for cell culture and tissue regeneration related applications. Focusing on these advanced NSF biomaterials, this review has systematically compared the structure and properties of MSF and NSF, and emphasized the unique properties of NSF. Following that, the effective construction strategies for NSF-based biomaterials are summarized, and their recent applications in cell behavior regulations and tissue regenerations are highlighted. Furthermore, current challenges and future perspectives for the fabrication and application of NSF-based biomaterials were discussed.
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Affiliation(s)
- Shengzhi Zou
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative Medicine, College of Materials Science and Engineering, Donghua University, Shanghai 201620, People's Republic of China
| | - Xiang Yao
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative Medicine, College of Materials Science and Engineering, Donghua University, Shanghai 201620, People's Republic of China
| | - Huili Shao
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative Medicine, College of Materials Science and Engineering, Donghua University, Shanghai 201620, People's Republic of China
| | - Rui L Reis
- I3Bs-Research Institute on Biomaterials, Biodegradables and Biomimetics, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, University of Minho, Barco, Guimarães 4805-017, Portugal
| | - Subhas C Kundu
- I3Bs-Research Institute on Biomaterials, Biodegradables and Biomimetics, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, University of Minho, Barco, Guimarães 4805-017, Portugal
| | - Yaopeng Zhang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative Medicine, College of Materials Science and Engineering, Donghua University, Shanghai 201620, People's Republic of China.
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Huang Y, Xie H, Fang W, Zou Z, Fu Z. Silk fibroin directs the formation of monetite nanocrystals and their assembly into hierarchical composites. J Mater Chem B 2021; 9:9136-9141. [PMID: 34693962 DOI: 10.1039/d1tb01821c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Natural biominerals are usually composite materials produced through mineralization of inorganic crystals within an organic matrix. Silk fibroin is known to be capable of directing the nucleation and growth of hydroxyapatite crystals. Here, we used silk films as the substrate to induce the mineralization of calcium phosphate. We show that the silk fibroin in solution could induce the formation of monetite crystals with a hierarchical structure, which are assembled by well aligned single crystals of monetite. In addition, we show that silk fibroins are incorporated inside the crystals. Therefore, the self-assembly of silk fibroin during the crystallization process is critical for the formation of such hierarchical structures.
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Affiliation(s)
- Ying Huang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China.
| | - Hao Xie
- School of Chemistry, Chemical Engineering, and Life Science, Wuhan University of Technology, Wuhan, 430070, China.
| | - Weijian Fang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China.
| | - Zhaoyong Zou
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China.
| | - Zhengyi Fu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China.
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Composition and in silico structural analysis of fibroin from liquid silk of non-mulberry silkworm Antheraea assamensis. Int J Biol Macromol 2020; 163:1947-1958. [PMID: 32910960 DOI: 10.1016/j.ijbiomac.2020.08.232] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 08/28/2020] [Accepted: 08/29/2020] [Indexed: 11/24/2022]
Abstract
Silk is spun from the liquid precursor known as liquid silk secreted from the posterior part and stored in the silk gland lumen with occurrence of many momentary events. The liquid silk in the silk gland is transformed to the spun silk fibre. In this study the elucidation of the protein components of liquid silk from the posterior part of the silk gland (PSG) of saturniid silkworm Antheraea assamensis along with its structural characterization has been reported. The 3D model of the N-terminal amorphous portion with some repeat crystalline motifs (19-255) of core protein fibroin has also been constructed. 1D and 2D electrophoresis revealed the homo-dimeric structure of the silk protein. Secondary structure analysis by Circular dichroism, FTIR spectroscopy showed α helical structural component as predominant conformation in the liquid silk. The crystalline structure investigated through X ray diffraction (XRD) analysis also revealed the presence of less ordered amorphous α helical conformation in the liquid silk. The 3D structural model proposed of the residues from 19 to 255 has revealed structural stability throughout the molecular dynamics simulation process. This study will provide the detailed structural information and in silico analysis of the core protein present in the liquid silk of PSG.
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Hao X, Wang X, Yang W, Ran J, Ni F, Tong T, Dai W, Zheng L, Shen X, Tong H. Comparisons of the restoring and reinforcement effects of carboxymethyl chitosan-silk fibroin (Bombyx Mori/Antheraea Yamamai/Tussah) on aged historic silk. Int J Biol Macromol 2018; 124:71-79. [PMID: 30471393 DOI: 10.1016/j.ijbiomac.2018.11.203] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 11/20/2018] [Accepted: 11/20/2018] [Indexed: 12/22/2022]
Abstract
This work presents the results of the reinforcement effects of regenerated silk fibroin solutions (SF) of Bombyx-Mori, Antheraea-Yamamai and Tussah on aged historic silk. Furthermore, Carboxymethyl-chitosan (CMC) was utilized as reinforcement and antibacterial filler to further improving the mechanical properties and antibacterial effects. To clarify the rationale behind this process, comprehensive characterization was applied, and a speculative explanation was provided. The results showed that Bombyx-mori and Tussah have better restoring effects than Antheraea-yamamai. CMC has good compatibility to the SF, and the addition of CMC has significantly contributed to the improvement the mechanical properties and thermal stability of the restored silk, which is due to the formation of chemical bonding, strong hydrogen bonding and the construction of polymer network structure. The enhancement of crystallinity and reduction of β-turns structure indicate that the micro-defects in the crystallization zone of the aged silk has been restored, and the ordered arrangement in the long-range ordered structure has been improved within a certain range. It was found that the CMC acted as antifungal agents when introduced on the aged historic silk, reducing the growth of Aspergillus niger, Aspergillus flavus and Paecilomyces variotii to a certain extent, which were commonly found in storage areas of libraries.
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Affiliation(s)
- Xinying Hao
- Key Laboratory of Analytical Chemistry for Biology and Medicine, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China; Archaeology Research Center of Science and Technology, Wuhan University, Wuhan 430072, China
| | - Xin Wang
- Key Laboratory of Analytical Chemistry for Biology and Medicine, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China; Archaeology Research Center of Science and Technology, Wuhan University, Wuhan 430072, China
| | - Weimei Yang
- Huazhong Univ Sci & Technol, Tongji Med Coll, Tongji Hosp, Wuhan 430030, Hubei, China
| | - Jiabing Ran
- Key Laboratory of Analytical Chemistry for Biology and Medicine, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Fangfang Ni
- Key Laboratory of Analytical Chemistry for Biology and Medicine, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Tong Tong
- Centre of Cultural Material Conservation, The University of Melbourne, Parkville, VIC 3010, Australia; Archaeology Research Center of Science and Technology, Wuhan University, Wuhan 430072, China
| | - Wei Dai
- Key Laboratory of Analytical Chemistry for Biology and Medicine, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Lingyue Zheng
- Key Laboratory of Analytical Chemistry for Biology and Medicine, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Xinyu Shen
- Key Laboratory of Analytical Chemistry for Biology and Medicine, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Hua Tong
- Key Laboratory of Analytical Chemistry for Biology and Medicine, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China; Archaeology Research Center of Science and Technology, Wuhan University, Wuhan 430072, China.
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Kim SR, Kwak W, Kim H, Caetano-Anolles K, Kim KY, Kim SB, Choi KH, Kim SW, Hwang JS, Kim M, Kim I, Goo TW, Park SW. Genome sequence of the Japanese oak silk moth, Antheraea yamamai: the first draft genome in the family Saturniidae. Gigascience 2018; 7:1-11. [PMID: 29186418 PMCID: PMC5774507 DOI: 10.1093/gigascience/gix113] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2017] [Accepted: 11/16/2017] [Indexed: 12/11/2022] Open
Abstract
Background Antheraea yamamai, also known as the Japanese oak silk moth, is a wild species of silk moth. Silk produced by A. yamamai, referred to as tensan silk, shows different characteristics such as thickness, compressive elasticity, and chemical resistance compared with common silk produced from the domesticated silkworm, Bombyx mori. Its unique characteristics have led to its use in many research fields including biotechnology and medical science, and the scientific as well as economic importance of the wild silk moth continues to gradually increase. However, no genomic information for the wild silk moth, including A. yamamai, is currently available. Findings In order to construct the A. yamamai genome, a total of 147G base pairs using Illumina and Pacbio sequencing platforms were generated, providing 210-fold coverage based on the 700-Mb estimated genome size of A. yamamai. The assembled genome of A. yamamai was 656 Mb (>2 kb) with 3675 scaffolds, and the N50 length of assembly was 739 Kb with a 34.07% GC ratio. Identified repeat elements covered 37.33% of the total genome, and the completeness of the constructed genome assembly was estimated to be 96.7% by Benchmarking Universal Single-Copy Orthologs v2 analysis. A total of 15 481 genes were identified using Evidence Modeler based on the gene prediction results obtained from 3 different methods (ab initio, RNA-seq-based, known-gene-based) and manual curation. Conclusions Here we present the genome sequence of A. yamamai, the first genome sequence of the wild silk moth. These results provide valuable genomic information, which will help enrich our understanding of the molecular mechanisms relating to not only specific phenotypes such as wild silk itself but also the genomic evolution of Saturniidae.
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Affiliation(s)
- Seong-Ryul Kim
- Department of Agricultural Biology, National Academy of Agricultural Science, Rural Development Administration, 166, Nongsaengmyeong-ro, Iseo-myeon, Wanju_Gun, Jeollabuk-do, 55365, Republic of Korea
| | - Woori Kwak
- C&K Genomics, Main Bldg. #420, SNU Research Park, Gwanak-ro 1, Gwanak gu, Seoul, 08826, Republic of Korea
| | - Hyaekang Kim
- Department of Agricultural Biotechnology and Research Institute of Agriculture and Life Sciences, Seoul National University, Gwanak-ro 1, Gwanak gu, Seoul, 08826, Republic of Korea
| | - Kelsey Caetano-Anolles
- Department of Agricultural Biotechnology and Research Institute of Agriculture and Life Sciences, Seoul National University, Gwanak-ro 1, Gwanak gu, Seoul, 08826, Republic of Korea
| | - Kee-Young Kim
- Department of Agricultural Biology, National Academy of Agricultural Science, Rural Development Administration, 166, Nongsaengmyeong-ro, Iseo-myeon, Wanju_Gun, Jeollabuk-do, 55365, Republic of Korea
| | - Su-Bae Kim
- Department of Agricultural Biology, National Academy of Agricultural Science, Rural Development Administration, 166, Nongsaengmyeong-ro, Iseo-myeon, Wanju_Gun, Jeollabuk-do, 55365, Republic of Korea
| | - Kwang-Ho Choi
- Department of Agricultural Biology, National Academy of Agricultural Science, Rural Development Administration, 166, Nongsaengmyeong-ro, Iseo-myeon, Wanju_Gun, Jeollabuk-do, 55365, Republic of Korea
| | - Seong-Wan Kim
- Department of Agricultural Biology, National Academy of Agricultural Science, Rural Development Administration, 166, Nongsaengmyeong-ro, Iseo-myeon, Wanju_Gun, Jeollabuk-do, 55365, Republic of Korea
| | - Jae-Sam Hwang
- Department of Agricultural Biology, National Academy of Agricultural Science, Rural Development Administration, 166, Nongsaengmyeong-ro, Iseo-myeon, Wanju_Gun, Jeollabuk-do, 55365, Republic of Korea
| | - Minjee Kim
- College of Agriculture and Life Sciences, Chonnam National University, Yongbong-ro 77, Buk-gu, Gwangju, 61186, Republic of Korea
| | - Iksoo Kim
- College of Agriculture and Life Sciences, Chonnam National University, Yongbong-ro 77, Buk-gu, Gwangju, 61186, Republic of Korea
| | - Tae-Won Goo
- Department of Biochemistry, Dongguk University College of Medicine, Gyeongju-si, Gyeongsangbuk-do, 38066, Republic of Korea
| | - Seung-Won Park
- Department of Biotechnology, Catholic University of Daegu, Hayang-ro 13-13, Hayang-eup, Gyeongsan-si, Gyeongsangbuk-do, 38430, Republic of Korea
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Jiang P, Ran J, Yan P, Zheng L, Shen X, Tong H. Rational design of a high-strength bone scaffold platform based on in situ hybridization of bacterial cellulose/nano-hydroxyapatite framework and silk fibroin reinforcing phase. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2017; 29:107-124. [DOI: 10.1080/09205063.2017.1403149] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Pei Jiang
- Key Laboratory of Analytical Chemistry for Biology and Medicine, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, China
| | - Jiabing Ran
- Key Laboratory of Analytical Chemistry for Biology and Medicine, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, China
| | - Pan Yan
- Key Laboratory of Analytical Chemistry for Biology and Medicine, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, China
| | - Lingyue Zheng
- Key Laboratory of Analytical Chemistry for Biology and Medicine, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, China
| | - Xinyu Shen
- Key Laboratory of Analytical Chemistry for Biology and Medicine, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, China
| | - Hua Tong
- Key Laboratory of Analytical Chemistry for Biology and Medicine, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, China
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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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Bhardwaj N, Rajkhowa R, Wang X, Devi D. Milled non-mulberry silk fibroin microparticles as biomaterial for biomedical applications. Int J Biol Macromol 2015; 81:31-40. [DOI: 10.1016/j.ijbiomac.2015.07.049] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Revised: 07/23/2015] [Accepted: 07/24/2015] [Indexed: 01/15/2023]
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10
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Numata K, Sato R, Yazawa K, Hikima T, Masunaga H. Crystal structure and physical properties of Antheraea yamamai silk fibers: Long poly(alanine) sequences are partially in the crystalline region. POLYMER 2015. [DOI: 10.1016/j.polymer.2015.09.025] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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11
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Terada D, Yokoyama Y, Hattori S, Kobayashi H, Tamada Y. The outermost surface properties of silk fibroin films reflect ethanol-treatment conditions used in biomaterial preparation. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 58:119-26. [PMID: 26478294 DOI: 10.1016/j.msec.2015.07.041] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2015] [Revised: 06/16/2015] [Accepted: 07/22/2015] [Indexed: 11/28/2022]
Abstract
Silk fibroin has attracted interest as a biomaterial, given its many excellent properties. Cell attachment to silk substrates is usually weaker than to standard culture dishes, and cells cultured on silk films or hydrogels typically form spheroids and micro-aggregates. However, too little is known about the higher order structures and behavior of fibroin under different conditions to explain the features of silk fibroin as a culture substrate. For instance, different biomaterial surfaces, with distinct effects on cell culture, can be achieved by varying the conditions of crystallization by alcohol immersion. Here, we show that treatment of fibroin film with <80% ethanol results in a jelly-like, hydrated hydrogel as the outermost surface layer; fibroblasts preferably aggregate, rather than attach individually to such a hydrogel surface, and therefore aggregate into spheroids. In contrast, a fibroin film treated with >90% ethanol has a harder surface than the <80% ethanol-treated fibroin, to which individual cells prefer to attach (and then expand on the surface), rather than to aggregate. We discuss the influence of alcohol concentration on the surface properties, based on surface analysis of the films. The surface analysis involved assessment of static and dynamic contact angles, zeta potential, changes in crystallinity and microscopic morphology of electrospun fibers, and texture changes of the outermost surface at a nanometer-scale captured by a scanning probe microscope.
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Affiliation(s)
- Dohiko Terada
- Toyama Industrial Technology Center, Futagami-cho 150, Takaoka, Toyama, Japan
| | - Yoshiyuki Yokoyama
- Toyama Industrial Technology Center, Futagami-cho 150, Takaoka, Toyama, Japan
| | - Shinya Hattori
- National Institute for Materials Science, Sengen 1-2-1, Tsukuba, Ibaraki, Japan
| | - Hisatoshi Kobayashi
- National Institute for Materials Science, Sengen 1-2-1, Tsukuba, Ibaraki, Japan
| | - Yasushi Tamada
- National Institute of Agrobiological Sciences, Ohwashi 1-2, Tsukuba, Ibaraki, Japan.
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You R, Xu Y, Liu Y, Li X, Li M. Comparison of the
in vitro
and
in vivo
degradations of silk fibroin scaffolds from mulberry and nonmulberry silkworms. Biomed Mater 2014; 10:015003. [DOI: 10.1088/1748-6041/10/1/015003] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Kambe Y, Sutherland TD, Kameda T. Recombinant production and film properties of full-length hornet silk proteins. Acta Biomater 2014; 10:3590-8. [PMID: 24862540 DOI: 10.1016/j.actbio.2014.05.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Revised: 05/01/2014] [Accepted: 05/15/2014] [Indexed: 12/12/2022]
Abstract
Full-length versions of the four main components of silk cocoons of Vespa simillima hornets, Vssilk1-4, were produced as recombinant proteins in Escherichia coli. In shake flasks, the recombinant Vssilk proteins yielded 160-330mg recombinant proteinl(-1). Films generated from solutions of single Vssilk proteins had a secondary structure similar to that of films generated from native hornet silk. The films made from individual recombinant hornet silk proteins had similar or enhanced mechanical performance compared with films generated from native hornet silk, possibly reflecting the homogeneity of the recombinant proteins. The pH-dependent changes in zeta (ζ) potential of each Vssilk film were measured, and isoelectric points (pI) of Vssilk1-4 were determined as 8.9, 9.1, 5.0 and 4.2, respectively. The pI of native hornet silk, a combination of the four Vssilk proteins, was 4.7, a value similar to that of Bombyx mori silkworm silk. Films generated from Vssilk1 and 2 had net positive charge under physiological conditions and showed significantly higher cell adhesion activity. It is proposed that recombinant hornet silk is a valuable new material with potential for cell culture applications.
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Kar S, Talukdar S, Pal S, Nayak S, Paranjape P, Kundu SC. Silk gland fibroin from indian muga silkworm Antheraea assama as potential biomaterial. Tissue Eng Regen Med 2013. [DOI: 10.1007/s13770-012-0008-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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Incorporation of Exogenous RGD Peptide and Inter-Species Blending as Strategies for Enhancing Human Corneal Limbal Epithelial Cell Growth on Bombyx mori Silk Fibroin Membranes. J Funct Biomater 2013; 4:74-88. [PMID: 24955953 PMCID: PMC4030899 DOI: 10.3390/jfb4020074] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2013] [Revised: 05/06/2013] [Accepted: 05/06/2013] [Indexed: 01/26/2023] Open
Abstract
While fibroin isolated from the cocoons of domesticated silkworm Bombyx mori supports growth of human corneal limbal epithelial (HLE) cells, the mechanism of cell attachment remains unclear. In the present study we sought to enhance the attachment of HLE cells to membranes of Bombyx mori silk fibroin (BMSF) through surface functionalization with an arginine-glycine-aspartic acid (RGD)-containing peptide. Moreover, we have examined the response of HLE cells to BMSF when blended with the fibroin produced by a wild silkworm, Antheraea pernyi, which is known to contain RGD sequences within its primary structure. A procedure to isolate A. pernyi silk fibroin (APSF) from the cocoons was established, and blends of the two fibroins were prepared at five different BMSF/APSF ratios. In another experiment, BMSF surface was modified by binding chemically the GRGDSPC peptide using a water-soluble carbodiimide. Primary HLE were grown in the absence of serum on membranes made of BMSF, APSF, and their blends, as well as on RGD-modified BMSF. There was no statistically significant enhancing effect on the cell attachment due to the RGD presence. This suggests that the adhesion through RGD ligands may have a complex mechanism, and the investigated strategies are of limited value unless the factors contributing to this mechanism become better known.
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Wen X, Peng X, Fu H, Dong Y, Han K, Su J, Wang Z, Wang R, Pan X, Huang L, Wu C. Preparation and in vitro evaluation of silk fibroin microspheres produced by a novel ultra-fine particle processing system. Int J Pharm 2011; 416:195-201. [DOI: 10.1016/j.ijpharm.2011.06.041] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2011] [Revised: 05/29/2011] [Accepted: 06/23/2011] [Indexed: 11/25/2022]
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