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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Mu X, Amouzandeh R, Vogts H, Luallen E, Arzani M. A brief review on the mechanisms and approaches of silk spinning-inspired biofabrication. Front Bioeng Biotechnol 2023; 11:1252499. [PMID: 37744248 PMCID: PMC10512026 DOI: 10.3389/fbioe.2023.1252499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Accepted: 08/22/2023] [Indexed: 09/26/2023] Open
Abstract
Silk spinning, observed in spiders and insects, exhibits a remarkable biological source of inspiration for advanced polymer fabrications. Because of the systems design, silk spinning represents a holistic and circular approach to sustainable polymer fabrication, characterized by renewable resources, ambient and aqueous processing conditions, and fully recyclable "wastes." Also, silk spinning results in structures that are characterized by the combination of monolithic proteinaceous composition and mechanical strength, as well as demonstrate tunable degradation profiles and minimal immunogenicity, thus making it a viable alternative to most synthetic polymers for the development of advanced biomedical devices. However, the fundamental mechanisms of silk spinning remain incompletely understood, thus impeding the efforts to harness the advantageous properties of silk spinning. Here, we present a concise and timely review of several essential features of silk spinning, including the molecular designs of silk proteins and the solvent cues along the spinning apparatus. The solvent cues, including salt ions, pH, and water content, are suggested to direct the hierarchical assembly of silk proteins and thus play a central role in silk spinning. We also discuss several hypotheses on the roles of solvent cues to provide a relatively comprehensive analysis and to identify the current knowledge gap. We then review the state-of-the-art bioinspired fabrications with silk proteins, including fiber spinning and additive approaches/three-dimensional (3D) printing. An emphasis throughout the article is placed on the universal characteristics of silk spinning developed through millions of years of individual evolution pathways in spiders and silkworms. This review serves as a stepping stone for future research endeavors, facilitating the in vitro recapitulation of silk spinning and advancing the field of bioinspired polymer fabrication.
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Affiliation(s)
- Xuan Mu
- Roy J. Carver Department of Biomedical Engineering, College of Engineering, University of Iowa, Iowa City, IA, United States
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3
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Rizzo G, Petrelli V, Sibillano T, De Caro L, Giangregorio MM, Lo Presti M, Omenetto FG, Giannini C, Mastrorilli P, Farinola GM. Raman, WAXS, and Solid-State NMR Characterizations of Regenerated Silk Fibroin Using Lanthanide Ions as Chaotropic Agents. ACS OMEGA 2023; 8:24165-24175. [PMID: 37457447 PMCID: PMC10339335 DOI: 10.1021/acsomega.2c07149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/06/2022] [Accepted: 04/12/2023] [Indexed: 07/18/2023]
Abstract
Bombyx mori silk fibroin (SF) has been reported as a convenient natural material for regenerative medicine, optoelectronics, and many other technological applications. SF owes its unique features to the hierarchical organization of the fibers. Many efforts have been made to set up protocols for dissolution since many applications of SF are based on regenerated solutions and fibers, but chaotropic conditions required to disassemble the packing of the polymer afford solutions with poor crystalline behavior. Our previous research has disclosed a dissolution and regeneration process of highly crystalline fibers involving lanthanide ions as chaotropic agents, demonstrating that each lanthanide has its own unique interaction with SF. Herein, we report elucidation of the structure of Ln-SF fibers by the combined use of Raman spectroscopy, wide-angle X-ray scattering (WAXS), and solid-state NMR techniques. Raman spectra confirmed the coordination of metal ions to SF, WAXS results highlighted the crystalline content of fibers, and solid-state NMR enabled the assessment of different ratios of secondary structures in the protein.
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Affiliation(s)
- Giorgio Rizzo
- Dipartimento
di Chimica, Università degli Studi
di Bari Aldo Moro, via Orabona 4, 70125 Bari, Italy
| | | | - Teresa Sibillano
- CNR
IC−Institute of Crystallography, via Amendola 122/O, Bari 70126, Italy
| | - Liberato De Caro
- CNR
IC−Institute of Crystallography, via Amendola 122/O, Bari 70126, Italy
| | - Maria Michela Giangregorio
- Institute
of Nanotechnology, CNR NANOTEC, c/o, Dipartimento di Chimica, Università di Bari, via Orabona 4, 70126 Bari, Italy
| | - Marco Lo Presti
- Silklab,
Department of Biomedical Engineering, Tufts
University, 200 Boston Avenue, Suite 4875, Medford, Massachusetts 02155, United States
| | - Fiorenzo G. Omenetto
- Silklab,
Department of Biomedical Engineering, Tufts
University, 200 Boston Avenue, Suite 4875, Medford, Massachusetts 02155, United States
| | - Cinzia Giannini
- CNR
IC−Institute of Crystallography, via Amendola 122/O, Bari 70126, Italy
| | | | - Gianluca M. Farinola
- Dipartimento
di Chimica, Università degli Studi
di Bari Aldo Moro, via Orabona 4, 70125 Bari, Italy
- Silklab,
Department of Biomedical Engineering, Tufts
University, 200 Boston Avenue, Suite 4875, Medford, Massachusetts 02155, United States
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4
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Giannelli M, Guerrini A, Ballestri M, Aluigi A, Zamboni R, Sotgiu G, Posati T. Bioactive Keratin and Fibroin Nanoparticles: An Overview of Their Preparation Strategies. NANOMATERIALS 2022; 12:nano12091406. [PMID: 35564115 PMCID: PMC9104131 DOI: 10.3390/nano12091406] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 04/13/2022] [Accepted: 04/14/2022] [Indexed: 12/13/2022]
Abstract
In recent years, several studies have focused their attention on the preparation of biocompatible and biodegradable nanocarriers of potential interest in the biomedical field, ranging from drug delivery systems to imaging and diagnosis. In this regard, natural biomolecules—such as proteins—represent an attractive alternative to synthetic polymers or inorganic materials, thanks to their numerous advantages, such as biocompatibility, biodegradability, and low immunogenicity. Among the most interesting proteins, keratin extracted from wool and feathers, as well as fibroin extracted from Bombyx mori cocoons, possess all of the abovementioned features required for biomedical applications. In the present review, we therefore aim to give an overview of the most important and efficient methodologies for obtaining drug-loaded keratin and fibroin nanoparticles, and of their potential for biomedical applications.
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5
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Han Y, Sun L, Wen C, Wang Z, Dai J, Shi L. Flexible conductive silk-PPy hydrogel toward wearable electronic strain sensors. Biomed Mater 2022; 17. [PMID: 35147523 DOI: 10.1088/1748-605x/ac5416] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Accepted: 02/09/2022] [Indexed: 11/11/2022]
Abstract
Conductive hydrogels have been studied as promising materials for the flexible and wearable bioelectronics, because of their unique electrical and mechanical properties. Addition of conducting polymers in biomaterial-based hydrogel matrix is a simple yet effective way to construct hydrogels with good conductivity and flexibility. In this work, a conductive hydrogel composed by a silk hydrogel and a conducting polymer, polypyrrole (PPy), is developed via in-situ polymerization of pyrrole into the silk fibroin network. The silk-PPy hydrogel shows high conductivity (26 S/m), as well as sensitive and fast responses to corresponding conformation changes. Taking advantages of these properties, flexible and wearable strain sensors are proposed for the monitoring of various body movements, which can detect both the large and subtle human motions with good sensitivity, reproducibility and stability. The hybridization of biomaterials and conducting polymers endows the multifunctions of the conductive hydrogels, thus showing considerable potentials in the advancement of the wearable electronics.
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Affiliation(s)
- Yuanyuan Han
- Biomedical Engineering, College of Biology , Hunan University, 27 Tianma Road, Changsha, 410082, CHINA
| | - Lu Sun
- Biomedical Engineering, College of Biology , Hunan University, 27 Tianma Road, Changsha, 410082, CHINA
| | - Chenyu Wen
- Department of Engineering Sciences, Uppsala Universitet, Ångströmlaboratoriet, Lägerhyddsvägen 1, Uppsala, 751 03, SWEDEN
| | - Zhaohui Wang
- Hunan University College of Materials Science and Engineering, 27 Tianma Road, Changsha, Hunan, 410082, CHINA
| | - Jianwu Dai
- Institute of Genetics and Developmental Biology Chinese Academy of Sciences, No 1 West Beichen Road, Chaoyang District, Beijing, 100101, Beijing, 100101, CHINA
| | - Liyang Shi
- Biomedical Engineering, College of Biology , Hunan University, 27 Tianma Road, Changsha, 410082, CHINA
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6
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Liu X, Sun Y, Chen B, Li Y, Zhu P, Wang P, Yan S, Li Y, Yang F, Gu N. Novel magnetic silk fibroin scaffolds with delayed degradation for potential long-distance vascular repair. Bioact Mater 2022; 7:126-143. [PMID: 34466722 PMCID: PMC8379427 DOI: 10.1016/j.bioactmat.2021.04.036] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 04/26/2021] [Accepted: 04/27/2021] [Indexed: 01/09/2023] Open
Abstract
Although with the good biological properties, silk fibroin (SF) is immensely restrained in long-distance vascular defect repair due to its relatively fast degradation and inferior mechanical properties. It is necessary to construct a multifunctional composite scaffold based on SF. In this study, a novel magnetic SF scaffold (MSFCs) was prepared by an improved infiltration method. Compared with SF scaffold (SFC), MSFCs were found to have better crystallinity, magnetocaloric properties, and mechanical strength, which was ascribed to the rational introduction of iron-based magnetic nanoparticles (MNPs). Moreover, in vivo and in vitro experiments demonstrated that the degradation of MSFCs was significantly extended. The mechanism of delayed degradation was correlated with the dual effect that was the newly formed hydrogen bonds between SFC and MNPs and the complexing to tyrosine (Try) to inhibit hydrolase by internal iron atoms. Besides, the β-crystallization of protein in MSFCs was increased with the rise of iron concentration, proving the beneficial effect after MNPS doped. Furthermore, although macrophages could phagocytose the released MNPs, it did not affect their function, and even a reasonable level might cause some cytokines to be upregulated. Finally, in vitro and in vivo studies demonstrated that MSFCs showed excellent biocompatibility and the growth promotion effect on CD34-labeled vascular endothelial cells (VECs). In conclusion, we confirm that the doping of MNPs can significantly reduce the degradation of SFC and thus provide an innovative perspective of multifunctional biocomposites for tissue engineering.
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Affiliation(s)
- Xin Liu
- State Key Laboratory of Bioelectronics, Jiangsu Key Laboratory for Biomaterials and Devices, School of Biological Science & Medical Engineering, Southeast University, Nanjing, 210096, PR China
| | - Yuxiang Sun
- State Key Laboratory of Bioelectronics, Jiangsu Key Laboratory for Biomaterials and Devices, School of Biological Science & Medical Engineering, Southeast University, Nanjing, 210096, PR China
| | - Bo Chen
- Materials Science and Devices Institute, Suzhou University of Science and Technology, 1 Kerui Road, Suzhou, 215009, PR China
| | - Yan Li
- State Key Laboratory of Bioelectronics, Jiangsu Key Laboratory for Biomaterials and Devices, School of Biological Science & Medical Engineering, Southeast University, Nanjing, 210096, PR China
| | - Peng Zhu
- State Key Laboratory of Quality Research in Chinese Medicines, Macau Institute for Applied Research in Medicine and Health, Macau University of Science and Technology, Macau, 999078, PR China
| | - Peng Wang
- State Key Laboratory of Bioelectronics, Jiangsu Key Laboratory for Biomaterials and Devices, School of Biological Science & Medical Engineering, Southeast University, Nanjing, 210096, PR China
| | - Sen Yan
- State Key Laboratory of Bioelectronics, Jiangsu Key Laboratory for Biomaterials and Devices, School of Biological Science & Medical Engineering, Southeast University, Nanjing, 210096, PR China
| | - Yao Li
- College of Social Sciences, University of Glasgow, Glasgow, G12 8QQ, United Kingdom
| | - Fang Yang
- State Key Laboratory of Bioelectronics, Jiangsu Key Laboratory for Biomaterials and Devices, School of Biological Science & Medical Engineering, Southeast University, Nanjing, 210096, PR China
| | - Ning Gu
- State Key Laboratory of Bioelectronics, Jiangsu Key Laboratory for Biomaterials and Devices, School of Biological Science & Medical Engineering, Southeast University, Nanjing, 210096, PR China
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7
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Lo Presti M, Rizzo G, Farinola GM, Omenetto FG. Bioinspired Biomaterial Composite for All-Water-Based High-Performance Adhesives. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:e2004786. [PMID: 34080324 PMCID: PMC8373158 DOI: 10.1002/advs.202004786] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 03/10/2021] [Indexed: 05/24/2023]
Abstract
The exceptional underwater adhesive properties displayed by aquatic organisms, such as mussels (Mytilus spp.) and barnacles (Cirripedia spp.) have long inspired new approaches to adhesives with a superior performance both in wet and dry environments. Herein, a bioinspired adhesive composite that combines both adhesion mechanisms of mussels and barnacles through a blend of silk, polydopamine, and Fe3+ ions in an entirely organic, nontoxic water-based formulation is presented. This approach seeks to recapitulate the two distinct mechanisms that underpin the adhesion properties of the Mytilus and Cirripedia, with the former secreting sticky proteinaceous filaments called byssus while the latter produces a strong proteic cement to ensure anchoring. The composite shows remarkable adhesive properties both in dry and wet conditions, favorably comparing to synthetic commercial glues and other adhesives based on natural polymers, with performance comparable to the best underwater adhesives with the additional advantage of having an entirely biological composition that requires no synthetic procedures or processing.
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Affiliation(s)
- Marco Lo Presti
- Silklab, Department of Biomedical EngineeringTufts University200 Boston Avenue, Suite 4875MedfordMA02155USA
| | - Giorgio Rizzo
- Dipartimento di ChimicaUniversità degli Studi di Bari Aldo Morovia Orabona 4Bari70126Italy
| | - Gianluca M. Farinola
- Silklab, Department of Biomedical EngineeringTufts University200 Boston Avenue, Suite 4875MedfordMA02155USA
- Dipartimento di ChimicaUniversità degli Studi di Bari Aldo Morovia Orabona 4Bari70126Italy
| | - Fiorenzo G. Omenetto
- Silklab, Department of Biomedical EngineeringTufts University200 Boston Avenue, Suite 4875MedfordMA02155USA
- Laboratory for Living DevicesTufts UniversityMedfordMA02155USA
- Department of Electrical and Computer EngineeringTufts UniversityMedfordMA02155USA
- Department of PhysicsTufts UniversityMedfordMA02155USA
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8
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Choi J, Hasturk O, Mu X, Sahoo JK, Kaplan DL. Silk Hydrogels with Controllable Formation of Dityrosine, 3,4-Dihydroxyphenylalanine, and 3,4-Dihydroxyphenylalanine-Fe 3+ Complexes through Chitosan Particle-Assisted Fenton Reactions. Biomacromolecules 2021; 22:773-787. [PMID: 33405916 DOI: 10.1021/acs.biomac.0c01539] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The oxidation of tyrosine residues of silk fibroin involves the generation of dityrosine and 3,4-dihydroxyphenylalanine (DOPA). However, it remains a challenge to selectively control the reaction pathway to produce dityrosine or DOPA in a selective fashion. Here, silk hydrogels with controllable formation of not only dityrosine and DOPA but also DOPA-Fe3+ complexes within the cross-linked networks were developed. The use of chitosan particles in the Fenton reaction allowed the interaction of Fe3+ ions with silk fibroin to be limited through the adsorption of Fe3+ ions onto chitosan particles by manipulating contact time between the reaction medium and chitosan particles. This led to significant suppression of the premature formation of β-sheet structures that cause steric hindrance to the collisions between tyrosyl radicals and thus enabled higher selectivity toward the formation of dityrosine than DOPA. Remarkably, the addition of ethylenediaminetetraacetic acid (EDTA) to the chitosan particle-assisted Fenton reactions resulted in hydrogels that significantly favored the formation of DOPA over dityrosine due to the increase in the hydroxylation of phenol in the presence of EDTA. Despite the existence of Fe3+-EDTA complexes, Raman spectra indicated the DOPA-Fe3+ complexation in the hydrogels. Mechanistically, the hydrogel networks with small-sized and uniformly distributed β-sheet structures as well as the abundance of DOPA appear to make non-EDTA-chelated Fe3+ ions more accessible to complexation with DOPA. These findings have important implications for understanding the oxidation of tyrosine residues of silk fibroin by metal-catalyzed oxidation systems with potential benefits for future studies on silk protein-based hydrogels capable of generating intrinsic adhesive features as well as for exploring dual-cross-linked silk hydrogels constructed by chemical cross-linking and metal-coordinate complexation.
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Affiliation(s)
- Jaewon Choi
- Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, Massachusetts 02155, United States
| | - Onur Hasturk
- Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, Massachusetts 02155, United States
| | - Xuan Mu
- Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, Massachusetts 02155, United States
| | - Jugal Kishore Sahoo
- Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, Massachusetts 02155, United States
| | - David L Kaplan
- Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, Massachusetts 02155, United States
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9
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Rizzo G, Lo Presti M, Giannini C, Sibillano T, Milella A, Matzeu G, Musio R, Omenetto FG, Farinola GM. Silk Fibroin Processing from CeCl
3
Aqueous Solution: Fibers Regeneration and Doping with Ce(III). MACROMOL CHEM PHYS 2020. [DOI: 10.1002/macp.202000066] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Giorgio Rizzo
- Dipartimento di ChimicaUniversità degli Studi di Bari “Aldo Moro” via Orabona 4 Bari 70126 Italy
| | - Marco Lo Presti
- Dipartimento di ChimicaUniversità degli Studi di Bari “Aldo Moro” via Orabona 4 Bari 70126 Italy
| | - Cinzia Giannini
- CNR IC–Institute of Crystallography via Amendola 122/O Bari 70126 Italy
| | - Teresa Sibillano
- CNR IC–Institute of Crystallography via Amendola 122/O Bari 70126 Italy
| | - Antonella Milella
- Dipartimento di ChimicaUniversità degli Studi di Bari “Aldo Moro” via Orabona 4 Bari 70126 Italy
| | - Giusy Matzeu
- Silklab, Department of Biomedical EngineeringTufts University 4 Colby Street Medford MA 02155 USA
| | - Roberta Musio
- Dipartimento di ChimicaUniversità degli Studi di Bari “Aldo Moro” via Orabona 4 Bari 70126 Italy
| | - Fiorenzo G. Omenetto
- Silklab, Department of Biomedical EngineeringTufts University 4 Colby Street Medford MA 02155 USA
| | - Gianluca M. Farinola
- Dipartimento di ChimicaUniversità degli Studi di Bari “Aldo Moro” via Orabona 4 Bari 70126 Italy
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10
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Choi J, McGill M, Raia NR, Hasturk O, Kaplan DL. Silk Hydrogels Crosslinked by the Fenton Reaction. Adv Healthc Mater 2019; 8:e1900644. [PMID: 31343117 PMCID: PMC6728211 DOI: 10.1002/adhm.201900644] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 07/03/2019] [Indexed: 11/06/2022]
Abstract
Here, the Fenton reaction is used to prepare silk hydrogels through oxidation of tyrosine residues in silk fibroin, leading to dityrosine crosslinking. At pH 5.7, gelation occurs rapidly within 30 s, and the resultant opaque gels show soft properties with a storage modulus of ≈100 Pa. The addition of ascorbic acid to the Fenton reaction increases the dityrosine bonds in the hydrogels but has little effect on the rheological or mechanical properties. The results indicate that Fe(III) ions significantly interacted with silk fibroin during the Fenton reaction, most likely binding to sites such as tyrosine, glutamate, and aspartate residues, triggering the formation of β-sheet structures that may impede dityrosine bond formation due to steric hindrance. The use of an iron chelator or the operation of the Fenton reaction at pH 9.2 enables control over the interaction of Fe(III) ions with silk fibroin, achieving a hydrogel with improved optical properties and enhanced dityrosine bond formation. Hydrogels prepared by the Fenton reaction are cytocompatible as L929 mouse fibroblasts remain viable and are proliferative when seeded on the hydrogels. The results offer a useful approach to generate chemically crosslinked silk fibroin hydrogels without the use of enzyme-catalyzed reactions for biomedical applications.
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Affiliation(s)
- Jaewon Choi
- Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, MA 02155, USA
| | - Meghan McGill
- Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, MA 02155, USA
| | - Nicole R. Raia
- Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, MA 02155, USA
| | - Onur Hasturk
- Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, MA 02155, USA
| | - David L. Kaplan
- Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, MA 02155, USA
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11
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Disruption of the Metal Ion Environment by EDTA for Silk Formation Affects the Mechanical Properties of Silkworm Silk. Int J Mol Sci 2019; 20:ijms20123026. [PMID: 31234286 PMCID: PMC6627089 DOI: 10.3390/ijms20123026] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 06/16/2019] [Accepted: 06/16/2019] [Indexed: 11/22/2022] Open
Abstract
Silk fiber has become a research focus because of its comprehensive mechanical properties. Metal ions can influence the conformational transition of silk fibroin. Current research is mainly focused on the role of a single ion, rather than the whole metal ion environment. Here, we report the effects of the overall metal ion environment on the secondary structure and mechanical properties of silk fibers after direct injection and feeding of silkworms with EDTA. The metal composition of the hemolymph, silk gland, and silk fiber changed significantly post EDTA treatment. Synchrotron FTIR analysis indicated that the secondary structure of silk fiber after EDTA treatment changed dramatically; particularly, the β-sheets decreased and the β-turns increased. Post EDTA treatment, the silk fiber had significantly decreased strength, Young’s modulus, and toughness as compared with the control groups, while the strain exhibited no obvious change. These changes can be attributed to the change in the metal ion environment in the silk fibroin and sericin in the silk gland. Our investigation provides a new theoretical basis for the natural silk spinning process, and our findings could help develop a method to modify the mechanical properties of silk fiber using metal ions.
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12
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Roohaniesfahani I, Wang J, No YJ, de Candia C, Miao X, Lu Z, Shi J, Kaplan DL, Jiang X, Zreiqat H. Modulatory effect of simultaneously released magnesium, strontium, and silicon ions on injectable silk hydrogels for bone regeneration. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 94:976-987. [PMID: 30423786 DOI: 10.1016/j.msec.2018.10.053] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Revised: 08/08/2018] [Accepted: 10/13/2018] [Indexed: 01/31/2023]
Abstract
Injectable silk hydrogels are ideal carriers of therapeutic agents due to their biocompatibility and low immunogenicity. Injectable silk hydrogels for bone regeneration have been previously developed but often utilize expensive biologics. In this study, we have developed an injectable silk composite incorporated with a triphasic ceramic called MSM-10 (54 Mg2SiO4, 36 Si3Sr5 and 10 MgO (wt%)) capable of simultaneously releasing magnesium, silicon, and strontium ions into its environment. These ions have been previously reported to possess therapeutic effects for bone regeneration. MSM-10 particles were incorporated into the silk hydrogels at various weight percentages [0.1 (SMH-0.1), 0.6 (SMH-0.6), 1 (SMH-1) and 2 (SMH-2)]. The effects of the released ions on the physicochemical and biological properties of the silk hydrogel were comprehensively evaluated. Increased MSM-10 loading was found to hinder the gelation kinetics of the silk hydrogel through the reduction of beta-sheet phase formation, which in turn affected the required sonication time for gelation, compressive strength, force of injection, microstructure and in vitro degradation rate. Primary human osteoblasts seeded on SMH-0.6 demonstrated increased proliferation and early alkaline phosphatase activity, as well as enhanced osteogenic gene expression compared to pure silk hydrogel and SMH-0.1. In vivo results in subcutaneous mouse models showed both decreased fibrous capsule formation and increased number of new blood vessels around the injected SMH-0.1 and SMH-0.6 implants compared to pure silk hydrogels. The results in this study indicate that the ions released from MSM-10 is able to influence the physicochemical and biological properties of silk hydrogels, and SMH-0.6 in particular shows promising properties for bone regeneration.
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Affiliation(s)
- Iman Roohaniesfahani
- Biomaterials and Tissue Engineering Research Unit, School of AMME, Faculty of Engineering and IT, University of Sydney, Sydney, Australia.
| | - Jie Wang
- Department of Prosthodontics, Oral Bioengineering and Regenerative Medicine Lab, Ninth People's Hospital Affiliated to Shanghai Jiao Tong University, School of Medicine, Shanghai, China
| | - Young Jung No
- Biomaterials and Tissue Engineering Research Unit, School of AMME, Faculty of Engineering and IT, University of Sydney, Sydney, Australia
| | - Christian de Candia
- Biomaterials and Tissue Engineering Research Unit, School of AMME, Faculty of Engineering and IT, University of Sydney, Sydney, Australia
| | - Xinchao Miao
- Department of Prosthodontics, Oral Bioengineering and Regenerative Medicine Lab, Ninth People's Hospital Affiliated to Shanghai Jiao Tong University, School of Medicine, Shanghai, China
| | - Zufu Lu
- Biomaterials and Tissue Engineering Research Unit, School of AMME, Faculty of Engineering and IT, University of Sydney, Sydney, Australia
| | - Jeffrey Shi
- School of Chemical and Biomolecular Engineering, Faculty of Engineering and IT, University of Sydney, Sydney, Australia
| | - David L Kaplan
- Department of Biomedical Engineering, Tufts University, Medford, MA 02155, USA
| | - Xinquan Jiang
- Department of Prosthodontics, Oral Bioengineering and Regenerative Medicine Lab, Ninth People's Hospital Affiliated to Shanghai Jiao Tong University, School of Medicine, Shanghai, China.
| | - Hala Zreiqat
- Biomaterials and Tissue Engineering Research Unit, School of AMME, Faculty of Engineering and IT, University of Sydney, Sydney, Australia.
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13
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Kavkler K, Pucić I, Zalar P, Demšar A, Mihaljević B. Is it safe to irradiate historic silk textile against fungi? Radiat Phys Chem Oxf Engl 1993 2018. [DOI: 10.1016/j.radphyschem.2018.04.030] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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14
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Zeng Y, Peng Z, Wang B, Hu Z, Wan J, Zhou Y. Application of Electron Paramagnetic Resonance and Solid-state 13C Nuclear Magnetic Resonance of Cross-polarization/Magic Angle Spinning to Study Enzymatic Degradation of Silk Fabrics. ANAL SCI 2017; 33:579-583. [PMID: 28496061 DOI: 10.2116/analsci.33.579] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The enzymatic degradation of silk by protease XIV has been investigated by using scanning electron microscopy (SEM), Fourier transfer infrared spectroscopy (FTIR), solid-state 13C nuclear magnetic resonance of cross-polarization/magic angle spinning (13C CP/MAS solid state NMR) and electron paramagnetic resonance (EPR). Micro-morphology of protease XIV aged samples showed that microfilaments were stripped out from the surface of silk fibers. The results of FTIR and 13C CP/MAS solid-state NMR indicated that the enzymatic degradation process could be divided into two stages. The EPR spectra indicated that the enzymatic degradation process was related to the free radical with the g-factor value of 2.0043. We also proposed that at the first degradation stage, the free radicals were apt to lose activities due to the loose structure of the non-crystalline region; at the second degradation stage, the free radicals produced in the crystalline region tended to be stored.
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Affiliation(s)
- Yuan Zeng
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University.,Institute of Textile Conservation, Zhejiang Sci-Tech University
| | - Zhiqin Peng
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University.,Institute of Textile Conservation, Zhejiang Sci-Tech University
| | - Bing Wang
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University.,Institute of Textile Conservation, Zhejiang Sci-Tech University
| | - Zhiwen Hu
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University.,Institute of Textile Conservation, Zhejiang Sci-Tech University
| | - Junmin Wan
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University.,Institute of Textile Conservation, Zhejiang Sci-Tech University
| | - Yang Zhou
- China National Silk Museum.,Key Scientific Research Base of Textile Conservation, State Administration for Cultural Heritage
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15
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Callone E, Dirè S, Hu X, Motta A. Processing Influence on Molecular Assembling and Structural Conformations in Silk Fibroin: Elucidation by Solid-State NMR. ACS Biomater Sci Eng 2016; 2:758-767. [DOI: 10.1021/acsbiomaterials.5b00507] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | - Xiao Hu
- Department of Physics & Astronomy, Biomedical & Translational Sciences, Biomedical Engineering, Rowan University, 201 Mullica Hill Road, Glassboro 08028, New Jersey, United States
| | - Antonella Motta
- BIOtech
Research Center, University of Trento, Via delle Regole 101, 38123 Mattarello, Trentino, Italy
- Trento
Unit, European Institute of Excellence on Tissue Engineering and Regenerative Medicine, Trento, Italy
- Trento Research
Unit, INSTM, Trento, Italy
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16
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Dubey P, Murab S, Karmakar S, Chowdhury PK, Ghosh S. Modulation of Self-Assembly Process of Fibroin: An Insight for Regulating the Conformation of Silk Biomaterials. Biomacromolecules 2015; 16:3936-44. [PMID: 26575529 DOI: 10.1021/acs.biomac.5b01258] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Controlling the mechanism of self-assembly in proteins has emerged as a potent tool for various biomedical applications. Silk fibroin self-assembly consists of gradual conformational transition from random coil to β-sheet structure. In this work we elucidated the intermediate secondary conformation in the presence of Ca(2+) ions during fibroin self-assembly. The interaction of fibroin and calcium ions resulted in a predominantly α-helical intermediate conformation, which was maintained to certain extent even in the final conformation as illustrated by circular dichroism and attenuated total reflectance-Fourier transform infrared spectroscopy. Further, to elucidate the mechanism behind this interaction molecular modeling of the N-terminal region of fibroin with Ca(2+) ions was performed. Negatively charged glutamate and aspartate amino acids play a key role in the electrostatic interaction with positively charged calcium ions. Therefore, insights about modulation of self-assembly mechanism of fibroin could potentially be utilized to develop silk-based biomaterials consisting of the desired secondary conformation.
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Affiliation(s)
- Priyanka Dubey
- Department of Textile Technology and ‡Department of Chemistry, Indian Institute of Technology Delhi , Hauz Khas, New Delhi 110016, India
| | - Sumit Murab
- Department of Textile Technology and ‡Department of Chemistry, Indian Institute of Technology Delhi , Hauz Khas, New Delhi 110016, India
| | - Sandip Karmakar
- Department of Textile Technology and ‡Department of Chemistry, Indian Institute of Technology Delhi , Hauz Khas, New Delhi 110016, India
| | - Pramit K Chowdhury
- Department of Textile Technology and ‡Department of Chemistry, Indian Institute of Technology Delhi , Hauz Khas, New Delhi 110016, India
| | - Sourabh Ghosh
- Department of Textile Technology and ‡Department of Chemistry, Indian Institute of Technology Delhi , Hauz Khas, New Delhi 110016, India
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17
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Xu L, Tu S, Chen C, Zhao J, Zhang Y, Zhou P. Effect of EGCG On Fe(III)-induced conformational transition of silk fibroin, a model of protein related to neurodegenerative diseases. Biopolymers 2015; 105:100-107. [DOI: 10.1002/bip.22752] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2015] [Revised: 09/30/2015] [Accepted: 10/09/2015] [Indexed: 01/13/2023]
Affiliation(s)
- Lihui Xu
- Department of Macromolecular Science, State Key Laboratory of Molecular Engineering of Polymers; Fudan University; Shanghai 200433 China
| | - Sidong Tu
- Department of Macromolecular Science, State Key Laboratory of Molecular Engineering of Polymers; Fudan University; Shanghai 200433 China
| | - Congheng Chen
- Department of Macromolecular Science, State Key Laboratory of Molecular Engineering of Polymers; Fudan University; Shanghai 200433 China
| | - Juan Zhao
- Department of Macromolecular Science, State Key Laboratory of Molecular Engineering of Polymers; Fudan University; Shanghai 200433 China
| | - Yuan Zhang
- Department of Medicine; St Vincent's Hospital, the University of Melbourne; Fitzroy Victoria 3065 Australia
| | - Ping Zhou
- Department of Macromolecular Science, State Key Laboratory of Molecular Engineering of Polymers; Fudan University; Shanghai 200433 China
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18
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Tian Y, Jiang X, Chen X, Shao Z, Yang W. Doxorubicin-loaded magnetic silk fibroin nanoparticles for targeted therapy of multidrug-resistant cancer. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:7393-8. [PMID: 25238148 DOI: 10.1002/adma.201403562] [Citation(s) in RCA: 160] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2014] [Indexed: 05/21/2023]
Abstract
A strategy to prepare doxorubicin-loaded magnetic silk fibroin nanoparticles is presented. The nanoparticles serve as a nanometer-scale drug-delivery system in the chemotherapy of multidrug-resistant cancer under the guidance of a magnetic field. The magnetic tumor-targeting ability broadens the range of biomedical applications of silk fibroin, and the nanoparticle-assisted preparation strategy is useful for the advancement of other biomacromolecule-based materials.
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Affiliation(s)
- Ye Tian
- 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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19
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Sagnella A, Chieco C, Di Virgilio N, Toffanin S, Posati T, Pistone A, Bonetti S, Muccini M, Ruani G, Benfenati V, Rossi F, Zamboni R. Bio-doping of regenerated silk fibroin solution and films: a green route for biomanufacturing. RSC Adv 2014. [DOI: 10.1039/c4ra04622f] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Optically active silk fibroin films could be successfully obtained by biodoping, i.e. from cocoons of Bombyx mori fed with a rhodamine B-added diet.
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Affiliation(s)
- A. Sagnella
- Laboratorio di Micro e Submicro Tecnologie abilitanti dell'Emilia-Romagna (MIST ER)
- I-40129 Bologna, Italy
| | - C. Chieco
- Consiglio Nazionale delle Ricerche-Istituto di Biometeorologia (CNR-IBIMET)
- 40129 Bologna, Italy
| | - N. Di Virgilio
- Consiglio Nazionale delle Ricerche-Istituto di Biometeorologia (CNR-IBIMET)
- 40129 Bologna, Italy
| | - S. Toffanin
- Consiglio Nazionale delle Ricerche-Istituto per lo Studio dei Materiali Nanostrutturati (CNR-ISMN)
- 40129 Bologna, Italy
| | - T. Posati
- Laboratorio di Micro e Submicro Tecnologie abilitanti dell'Emilia-Romagna (MIST ER)
- I-40129 Bologna, Italy
| | - A. Pistone
- Consiglio Nazionale delle Ricerche – Istituto per la Sintesi Organica e la Fotoreattività (CNR-ISOF)
- 40129 Bologna, Italy
| | - S. Bonetti
- Consiglio Nazionale delle Ricerche-Istituto per lo Studio dei Materiali Nanostrutturati (CNR-ISMN)
- 40129 Bologna, Italy
| | - M. Muccini
- Consiglio Nazionale delle Ricerche-Istituto per lo Studio dei Materiali Nanostrutturati (CNR-ISMN)
- 40129 Bologna, Italy
| | - G. Ruani
- Consiglio Nazionale delle Ricerche-Istituto per lo Studio dei Materiali Nanostrutturati (CNR-ISMN)
- 40129 Bologna, Italy
| | - V. Benfenati
- Consiglio Nazionale delle Ricerche – Istituto per la Sintesi Organica e la Fotoreattività (CNR-ISOF)
- 40129 Bologna, Italy
| | - F. Rossi
- Consiglio Nazionale delle Ricerche-Istituto di Biometeorologia (CNR-IBIMET)
- 40129 Bologna, Italy
| | - R. Zamboni
- Consiglio Nazionale delle Ricerche – Istituto per la Sintesi Organica e la Fotoreattività (CNR-ISOF)
- 40129 Bologna, Italy
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20
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Dang Q, Lu S, Yu S, Sun P, Yuan Z. Silk Fibroin/Montmorillonite Nanocomposites: Effect of pH on the Conformational Transition and Clay Dispersion. Biomacromolecules 2010; 11:1796-801. [DOI: 10.1021/bm1002398] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Qinqin Dang
- Key Laboratory of Functional Polymer Materials, Ministry of Education, Institute of Polymer Chemistry and College of Chemistry, Nankai University, Tianjin, 300071, People's Republic of China
| | - Shoudong Lu
- Key Laboratory of Functional Polymer Materials, Ministry of Education, Institute of Polymer Chemistry and College of Chemistry, Nankai University, Tianjin, 300071, People's Republic of China
| | - Shen Yu
- Key Laboratory of Functional Polymer Materials, Ministry of Education, Institute of Polymer Chemistry and College of Chemistry, Nankai University, Tianjin, 300071, People's Republic of China
| | - Pingchuan Sun
- Key Laboratory of Functional Polymer Materials, Ministry of Education, Institute of Polymer Chemistry and College of Chemistry, Nankai University, Tianjin, 300071, People's Republic of China
| | - Zhi Yuan
- Key Laboratory of Functional Polymer Materials, Ministry of Education, Institute of Polymer Chemistry and College of Chemistry, Nankai University, Tianjin, 300071, People's Republic of China
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21
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Wilaiwan S, Chirapha B, Yaowalak S, Prasong S. Screening of Some Elements in Different Silk Cocoon Varieties. ACTA ACUST UNITED AC 2010. [DOI: 10.3923/jas.2010.575.579] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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