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Tian Z, Zhao C, Huang T, Yu L, Sun Y, Tao Y, Cao Y, Du R, Lin W, Zeng J. Silkworm Cocoon: Dual Functions as a Traditional Chinese Medicine and the Raw Material of Promising Biocompatible Carriers. Pharmaceuticals (Basel) 2024; 17:817. [PMID: 39065668 PMCID: PMC11279987 DOI: 10.3390/ph17070817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2024] [Revised: 06/17/2024] [Accepted: 06/19/2024] [Indexed: 07/28/2024] Open
Abstract
The silkworm cocoon (SC), both as a traditional Chinese medicine and as the raw material for biocompatible carriers, has been extensively used in the medical and biomedical fields. This review elaborates on the multiple functions of SC, with an in-depth analysis of its chemical composition, biological activities, as well as its applications in modern medicine. The primary chemical components of SC include silk fibroin (SF), silk sericin (SS), and other flavonoid-like bioactive compounds demonstrating various biological effects. These include hypoglycemic, cardioprotective, hypolipidemic, anti-inflammatory, antioxidant, and antimicrobial actions, which highlight its potential therapeutic benefits. Furthermore, the review explores the applications of silk-derived materials in drug delivery systems, tissue engineering, regenerative medicine, and in vitro diagnostics. It also highlights the progression of SC from laboratory research to clinical trials, emphasizing the safety and efficacy of SC-based materials across multiple medical domains. Moreover, we discuss the market products developed from silk proteins, illustrating the transition from traditional uses to contemporary medical applications. This review provides support in understanding the current research status of SC and the further development and application of its derived products.
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Affiliation(s)
- Zhijie Tian
- School of Chemistry & Environmental Engineering, Shanghai Institute of Technology, Shanghai 201418, China;
- NHC Key Laboratory of Reproduction Regulation, Shanghai Engineering Research Center of Reproductive Health Drug and Devices, Shanghai Institute for Biomedical and Pharmaceutical Technologies (SIBPT), Shanghai 200032, China; (C.Z.); (T.H.); (L.Y.); (Y.T.); (Y.C.)
| | - Chuncao Zhao
- NHC Key Laboratory of Reproduction Regulation, Shanghai Engineering Research Center of Reproductive Health Drug and Devices, Shanghai Institute for Biomedical and Pharmaceutical Technologies (SIBPT), Shanghai 200032, China; (C.Z.); (T.H.); (L.Y.); (Y.T.); (Y.C.)
| | - Ting Huang
- NHC Key Laboratory of Reproduction Regulation, Shanghai Engineering Research Center of Reproductive Health Drug and Devices, Shanghai Institute for Biomedical and Pharmaceutical Technologies (SIBPT), Shanghai 200032, China; (C.Z.); (T.H.); (L.Y.); (Y.T.); (Y.C.)
| | - Lining Yu
- NHC Key Laboratory of Reproduction Regulation, Shanghai Engineering Research Center of Reproductive Health Drug and Devices, Shanghai Institute for Biomedical and Pharmaceutical Technologies (SIBPT), Shanghai 200032, China; (C.Z.); (T.H.); (L.Y.); (Y.T.); (Y.C.)
| | - Yijie Sun
- Huadong Hospital Affiliated to Fudan University, Shanghai 200040, China;
| | - Yian Tao
- NHC Key Laboratory of Reproduction Regulation, Shanghai Engineering Research Center of Reproductive Health Drug and Devices, Shanghai Institute for Biomedical and Pharmaceutical Technologies (SIBPT), Shanghai 200032, China; (C.Z.); (T.H.); (L.Y.); (Y.T.); (Y.C.)
| | - Yunfeng Cao
- NHC Key Laboratory of Reproduction Regulation, Shanghai Engineering Research Center of Reproductive Health Drug and Devices, Shanghai Institute for Biomedical and Pharmaceutical Technologies (SIBPT), Shanghai 200032, China; (C.Z.); (T.H.); (L.Y.); (Y.T.); (Y.C.)
| | - Ruofei Du
- Innovation Research Institute of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China;
| | - Wenhui Lin
- School of Chemistry & Environmental Engineering, Shanghai Institute of Technology, Shanghai 201418, China;
| | - Jia Zeng
- NHC Key Laboratory of Reproduction Regulation, Shanghai Engineering Research Center of Reproductive Health Drug and Devices, Shanghai Institute for Biomedical and Pharmaceutical Technologies (SIBPT), Shanghai 200032, China; (C.Z.); (T.H.); (L.Y.); (Y.T.); (Y.C.)
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Weon SH, Na Y, Han J, Lee JW, Kim HJ, Park S, Lee SH. pH-Responsive Cellulose/Silk/Fe 3O 4 Hydrogel Microbeads Designed for Biomedical Applications. Gels 2024; 10:200. [PMID: 38534618 DOI: 10.3390/gels10030200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Revised: 03/10/2024] [Accepted: 03/14/2024] [Indexed: 03/28/2024] Open
Abstract
In this study, cellulose/Fe3O4 hydrogel microbeads were prepared through the sol-gel transition of a solvent-in-oil emulsion using various cellulose-dissolving solvents and soybean oil without surfactants. Particularly, 40% tetrabutylammonium hydroxide (TBAH) and 40% tetrabutylphosphonium hydroxide (TBPH) dissolved cellulose at room temperature and effectively dispersed Fe3O4, forming cellulose/Fe3O4 microbeads with an average diameter of ~15 µm. Additionally, these solvents co-dissolved cellulose and silk, allowing for the manufacture of cellulose/silk/Fe3O4 hydrogel microbeads with altered surface characteristics. Owing to the negatively charged surface characteristics, the adsorption capacity of the cellulose/silk/Fe3O4 microbeads for the cationic dye crystal violet was >10 times higher than that of the cellulose/Fe3O4 microbeads. When prepared with TBAH, the initial adsorption rate of bovine serum albumin (BSA) on the cellulose/silk/Fe3O4 microbeads was 18.1 times higher than that on the cellulose/Fe3O4 microbeads. When preparing TBPH, the equilibrium adsorption capacity of the cellulose/silk/Fe3O4 microbeads for BSA (1.6 g/g) was 8.5 times higher than that of the cellulose/Fe3O4 microbeads. The pH-dependent BSA release from the cellulose/silk/Fe3O4 microbeads prepared with TBPH revealed 6.1-fold slower initial desorption rates and 5.2-fold lower desorption amounts at pH 2.2 than those at pH 7.4. Cytotoxicity tests on the cellulose and cellulose/silk composites regenerated with TBAH and TBPH yielded nontoxic results. Therefore, cellulose/silk/Fe3O4 microbeads are considered suitable pH-responsive supports for orally administered protein pharmaceuticals.
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Affiliation(s)
- Seung Hyeon Weon
- Department of Biological Engineering, Konkuk University, Seoul 05029, Republic of Korea
| | - Yuhyeon Na
- Department of Biological Engineering, Konkuk University, Seoul 05029, Republic of Korea
| | - Jiwoo Han
- Department of Biological Engineering, Konkuk University, Seoul 05029, Republic of Korea
| | - Jeong Woo Lee
- Department of Biological Engineering, Konkuk University, Seoul 05029, Republic of Korea
| | - Hyung Joo Kim
- Department of Biological Engineering, Konkuk University, Seoul 05029, Republic of Korea
| | - Saerom Park
- Department of Biological Engineering, Konkuk University, Seoul 05029, Republic of Korea
| | - Sang Hyun Lee
- Department of Biological Engineering, Konkuk University, Seoul 05029, Republic of Korea
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Yang F, Cai B, Gu H, Wang F. Comparative Investigation on the Structure and Properties of Protein Films from Domestic and Wild Silkworms through Ultrasonic Regeneration. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2023.135255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2023]
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4
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In vitro biological activities of the flexible and virus nanoparticle-decorated silk fibroin-based films. Int J Biol Macromol 2022; 216:437-445. [PMID: 35809668 DOI: 10.1016/j.ijbiomac.2022.07.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 06/26/2022] [Accepted: 07/02/2022] [Indexed: 11/21/2022]
Abstract
Flexible films were prepared from silk fibroin (SF) and gelatin (GA) with a presence of glycerol (Gly), followed by water vapor annealing to achieve water-insoluble matrices. The blended SF/GA/Gly films were chemically conjugated with tobacco mosaic virus (TMV), either native (TMV-wt) or genetically modified with Arg-Gly-Asp (RGD) sequences (TMV-rgd), to improve cellular responses. The attachment and proliferation of L929 cells on TMV-decorated films were improved, possibly due to enhanced surface roughness. The cellular responses were pronounced with TMV-rgd, due to the proper decoration of RGD, which is an integrin recognition motif supporting cell binding. However, the biological results were inconclusive for human primary cells because of an innate slow growth kinetic of the cells. Additionally, the cells on SF/GA/Gly films were greater populated in S and G2/M phase, and the cell cycle arrest was notably increased in the TMV-conjugated group. Our findings revealed that the films modified with TMV were cytocompatible and the cellular responses were significantly enhanced when conjugated with its RGD mutants. The biological analysis on the cellular mechanisms in response to TMV is further required to ensure the safety concern of the biomaterials toward clinical translation.
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5
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Lujerdean C, Baci GM, Cucu AA, Dezmirean DS. The Contribution of Silk Fibroin in Biomedical Engineering. INSECTS 2022; 13:286. [PMID: 35323584 PMCID: PMC8950689 DOI: 10.3390/insects13030286] [Citation(s) in RCA: 51] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Revised: 03/07/2022] [Accepted: 03/10/2022] [Indexed: 02/06/2023]
Abstract
Silk fibroin (SF) is a natural protein (biopolymer) extracted from the cocoons of Bombyx mori L. (silkworm). It has many properties of interest in the field of biotechnology, the most important being biodegradability, biocompatibility and robust mechanical strength with high tensile strength. SF is usually dissolved in water-based solvents and can be easily reconstructed into a variety of material formats, including films, mats, hydrogels, and sponges, by various fabrication techniques (spin coating, electrospinning, freeze-drying, and physical or chemical crosslinking). Furthermore, SF is a feasible material used in many biomedical applications, including tissue engineering (3D scaffolds, wounds dressing), cancer therapy (mimicking the tumor microenvironment), controlled drug delivery (SF-based complexes), and bone, eye and skin regeneration. In this review, we describe the structure, composition, general properties, and structure-properties relationship of SF. In addition, the main methods used for ecological extraction and processing of SF that make it a green material are discussed. Lastly, technological advances in the use of SF-based materials are addressed, especially in healthcare applications such as tissue engineering and cancer therapeutics.
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Affiliation(s)
- Cristian Lujerdean
- Faculty of Animal Science and Biotechnology, University of Animal Sciences and Veterinary Medicine Cluj-Napoca, 400372 Cluj-Napoca, Romania; (A.-A.C.); (D.S.D.)
| | - Gabriela-Maria Baci
- Faculty of Animal Science and Biotechnology, University of Animal Sciences and Veterinary Medicine Cluj-Napoca, 400372 Cluj-Napoca, Romania; (A.-A.C.); (D.S.D.)
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Chigama H, Kanetaka H, Furuya M, Yokota K, Kawashita M. Indirect cytotoxicity evaluations of antibacterial raw silk fabric doped with calcium, copper and zinc on fibroblasts and osteoblasts. J Biomater Appl 2022; 36:1417-1426. [PMID: 34984930 DOI: 10.1177/08853282211058941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Antibacterial materials are widely used to prevent hospital-acquired infections. In our previous report, metal (calcium, copper or zinc)-doped raw silk fabrics were shown to possess strong antibacterial activities against Escherichia coli. However, antibacterial materials may occasionally be harmful to the human body; thus, in this study, we investigated the cytotoxicities of extracts from metal-doped raw silk fabrics with respect to fibroblasts and osteoblasts indirectly. Calcium-doped raw silk fabric demonstrated cytocompatibility with fibroblasts. Contrarily, copper- and zinc-doped raw silk fabrics remarkably decreased the cell densities of fibroblasts, indicating their cytotoxic effects. This observation could be attributed to the high concentrations of the released copper or zinc ions. However, calcium-, copper- and zinc-doped raw silk fabrics did not demonstrate any cytotoxic effects on osteoblasts because a high concentration of the serum alleviated the effects of these metal ions released from the fabrics. Thus, calcium-doped raw silk fabric is a promising antibacterial material that does not induce strong cytotoxicity. This study will facilitate the design of materials that are both antibacterial and safe.
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Affiliation(s)
- Hiroki Chigama
- Graduate School of Dentistry, 13101Tohoku University, Sendai, Japan
| | | | - Maiko Furuya
- Graduate School of Dentistry, 13101Tohoku University, Sendai, Japan
| | - Kotone Yokota
- Graduate School of Dentistry, 13101Tohoku University, Sendai, Japan
| | - Masakazu Kawashita
- Institute of Biomaterials and Bioengineering, 13100Tokyo Medical and Dental University, Tokyo, Japan
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Laomeephol C, Vasuratna A, Ratanavaraporn J, Kanokpanont S, Luckanagul JA, Humenik M, Scheibel T, Damrongsakkul S. Impacts of Blended Bombyx mori Silk Fibroin and Recombinant Spider Silk Fibroin Hydrogels on Cell Growth. Polymers (Basel) 2021; 13:4182. [PMID: 34883685 PMCID: PMC8659740 DOI: 10.3390/polym13234182] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 11/23/2021] [Accepted: 11/25/2021] [Indexed: 12/18/2022] Open
Abstract
Binary-blended hydrogels fabricated from Bombyx mori silk fibroin (SF) and recombinant spider silk protein eADF4(C16) were developed and investigated concerning gelation and cellular interactions in vitro. With an increasing concentration of eADF4(C16), the gelation time of SF was shortened from typically one week to less than 48 h depending on the blending ratio. The biological tests with primary cells and two cell lines revealed that the cells cannot adhere and preferably formed cell aggregates on eADF4(C16) hydrogels, due to the polyanionic properties of eADF4(C16). Mixing SF in the blends ameliorated the cellular activities, as the proliferation of L929 fibroblasts and SaOS-2 osteoblast-like cells increased with an increase of SF content. The blended SF:eADF4(C16) hydrogels attained the advantages as well as overcame the limitations of each individual material, underlining the utilization of the hydrogels in several biomedical applications.
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Affiliation(s)
- Chavee Laomeephol
- Biomaterial Engineering for Medical and Health Research Unit, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand
| | - Apichai Vasuratna
- Department of Obstetrics and Gynecology, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand
| | - Juthamas Ratanavaraporn
- Biomaterial Engineering for Medical and Health Research Unit, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand
- Biomedical Engineering Research Center, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand
- Biomedical Engineering Program, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand
| | - Sorada Kanokpanont
- Biomaterial Engineering for Medical and Health Research Unit, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand
- Biomedical Engineering Research Center, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand
- Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand
| | - Jittima Amie Luckanagul
- Biomaterial Engineering for Medical and Health Research Unit, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok 10330, Thailand
| | - Martin Humenik
- Department of Biomaterials, Faculty of Engineering Science, University of Bayreuth, Prof.-Rüdiger-Bormann Str. 1, 95447 Bayreuth, Germany
| | - Thomas Scheibel
- Department of Biomaterials, Faculty of Engineering Science, University of Bayreuth, Prof.-Rüdiger-Bormann Str. 1, 95447 Bayreuth, Germany
| | - Siriporn Damrongsakkul
- Biomaterial Engineering for Medical and Health Research Unit, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand
- Biomedical Engineering Research Center, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand
- Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand
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8
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Deptuch T, Florczak A, Lewandowska A, Leporowska E, Penderecka K, Marszalek A, Mackiewicz A, Dams-Kozlowska H. MS1-type bioengineered spider silk nanoparticles do not exhibit toxicity in an in vivo mouse model. Nanomedicine (Lond) 2021; 16:1553-1565. [PMID: 34165326 DOI: 10.2217/nnm-2021-0029] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Background: Due to factors such as silk sequence, purification, degradation, morphology and functionalization, each silk variant should be individually tested for potential toxicity. Aim: In vivo toxicological evaluation of the previously characterized bioengineered H2.1MS1 spider silk particles that can deliver chemotherapeutics to human epidermal growth factor receptor 2-positive breast cancer. Materials & methods: Silk nanoparticles (H2.1MS1 and control MS1) were administered intravenously to mice, and then the organismal response was assessed. Several parameters of acute and subchronic toxicity were analyzed, including animal mortality and behavior, nanosphere biodistribution, and histopathological analysis of internal organs. Also, the complete blood count, as well as the concentration of biochemical parameters and cytokines in the serum, were examined. Results & conclusion: No toxicity of the systemically administrated silk nanosphere was observed, indicating their potential application in biomedicine.
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Affiliation(s)
- Tomasz Deptuch
- Chair of Medical Biotechnology, Poznan University of Medical Sciences, 15 Garbary St, 61-866, Poznan, Poland.,Department of Diagnostics & Cancer Immunology, Greater Poland Cancer Centre, 15 Garbary St, 61-866, Poznan, Poland
| | - Anna Florczak
- Chair of Medical Biotechnology, Poznan University of Medical Sciences, 15 Garbary St, 61-866, Poznan, Poland.,Department of Diagnostics & Cancer Immunology, Greater Poland Cancer Centre, 15 Garbary St, 61-866, Poznan, Poland
| | - Anna Lewandowska
- Department of Tumor Pathology, Greater Poland Cancer Centre, 15 Garbary St, 61-866, Poznan, Poland.,Department of Tumor Pathology & Prophylaxis, Poznan University of Medical Sciences, 15 Garbary St, 61-866, Poznan, Poland
| | - Ewa Leporowska
- Department of Laboratory Diagnostics, Greater Poland Cancer Centre, 15 Garbary St, 61-866, Poznan, Poland
| | - Karolina Penderecka
- Chair of Medical Biotechnology, Poznan University of Medical Sciences, 15 Garbary St, 61-866, Poznan, Poland.,Department of Diagnostics & Cancer Immunology, Greater Poland Cancer Centre, 15 Garbary St, 61-866, Poznan, Poland
| | - Andrzej Marszalek
- Department of Tumor Pathology, Greater Poland Cancer Centre, 15 Garbary St, 61-866, Poznan, Poland.,Department of Tumor Pathology & Prophylaxis, Poznan University of Medical Sciences, 15 Garbary St, 61-866, Poznan, Poland
| | - Andrzej Mackiewicz
- Chair of Medical Biotechnology, Poznan University of Medical Sciences, 15 Garbary St, 61-866, Poznan, Poland.,Department of Diagnostics & Cancer Immunology, Greater Poland Cancer Centre, 15 Garbary St, 61-866, Poznan, Poland
| | - Hanna Dams-Kozlowska
- Chair of Medical Biotechnology, Poznan University of Medical Sciences, 15 Garbary St, 61-866, Poznan, Poland.,Department of Diagnostics & Cancer Immunology, Greater Poland Cancer Centre, 15 Garbary St, 61-866, Poznan, Poland
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Duangpakdee A, Laomeephol C, Jindatip D, Thongnuek P, Ratanavaraporn J, Damrongsakkul S. Crosslinked Silk Fibroin/Gelatin/Hyaluronan Blends as Scaffolds for Cell-Based Tissue Engineering. Molecules 2021; 26:molecules26113191. [PMID: 34073542 PMCID: PMC8198693 DOI: 10.3390/molecules26113191] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 05/20/2021] [Accepted: 05/21/2021] [Indexed: 11/16/2022] Open
Abstract
3D porous scaffolds fabricated from binary and ternary blends of silk fibroin (SF), gelatin (G), and hyaluronan (HA) and crosslinked by the carbodiimide coupling reaction were developed. Water-stable scaffolds can be obtained after crosslinking, and the SFG and SFGHA samples were stable in cell culture medium up to 10 days. The presence of HA in the scaffolds with appropriate crosslinking conditions greatly enhanced the swellability. The microarchitecture of the freeze-dried scaffolds showed high porosity and interconnectivity. In particular, the pore size was significantly larger with an addition of HA. Biological activities of NIH/3T3 fibroblasts seeded on SFG and SFGHA scaffolds revealed that both scaffolds were able to support cell adhesion and proliferation of a 7-day culture. Furthermore, cell penetration into the scaffolds can be observed due to the interconnected porous structure of the scaffolds and the presence of bioactive materials which could attract the cells and support cell functions. The higher cell number was noticed in the SFGHA samples, possibly due to the HA component and the larger pore size which could improve the microenvironment for fibroblast adhesion, proliferation, and motility. The developed scaffolds from ternary blends showed potential in their application as 3D cell culture substrates in fibroblast-based tissue engineering.
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Affiliation(s)
- Anongnart Duangpakdee
- Biomaterial Engineering for Medical and Health Research Unit, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand; (A.D.); (C.L.); (P.T.); (J.R.)
- Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand
| | - Chavee Laomeephol
- Biomaterial Engineering for Medical and Health Research Unit, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand; (A.D.); (C.L.); (P.T.); (J.R.)
| | - Depicha Jindatip
- Department of Anatomy, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand;
| | - Peerapat Thongnuek
- Biomaterial Engineering for Medical and Health Research Unit, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand; (A.D.); (C.L.); (P.T.); (J.R.)
- Biomedical Engineering Program, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand
- Biomedical Engineering Research Center, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand
| | - Juthamas Ratanavaraporn
- Biomaterial Engineering for Medical and Health Research Unit, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand; (A.D.); (C.L.); (P.T.); (J.R.)
- Biomedical Engineering Program, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand
- Biomedical Engineering Research Center, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand
| | - Siriporn Damrongsakkul
- Biomaterial Engineering for Medical and Health Research Unit, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand; (A.D.); (C.L.); (P.T.); (J.R.)
- Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand
- Biomedical Engineering Program, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand
- Biomedical Engineering Research Center, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand
- Correspondence: ; Tel.: +662-218-6862; Fax: +662-218-6877
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10
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Molinnus D, Drinic A, Iken H, Kröger N, Zinser M, Smeets R, Köpf M, Kopp A, Schöning MJ. Towards a flexible electrochemical biosensor fabricated from biocompatible Bombyx mori silk. Biosens Bioelectron 2021; 183:113204. [PMID: 33836429 DOI: 10.1016/j.bios.2021.113204] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 03/22/2021] [Accepted: 03/24/2021] [Indexed: 12/13/2022]
Abstract
In modern days, there is an increasing relevance of and demand for flexible and biocompatible sensors for in-vivo and epidermal applications. One promising strategy is the implementation of biological (natural) polymers, which offer new opportunities for flexible biosensor devices due to their high biocompatibility and adjustable biodegradability. As a proof-of-concept experiment, a biosensor was fabricated by combining thin- (for Pt working- and counter electrode) and thick-film (for Ag/AgCl quasi-reference electrode) technologies: The biosensor consists of a fully bio-based and biodegradable fibroin substrate derived from silk fibroin of the silkworm Bombyx mori combined with immobilized enzyme glucose oxidase. The flexible glucose biosensor is encapsulated by a biocompatible silicon rubber which is certificated for a safe use onto human skin. Characterization of the sensor set-up is exemplarily demonstrated by glucose measurements in buffer and Ringer's solution, while the stability of the quasi-reference electrode has been investigated versus a commercial Ag/AgCl reference electrode. Repeated bending studies validated the mechanical properties of the electrode structures. The cross-sensitivity of the biosensor against ascorbic acid, noradrenaline and adrenaline was investigated, too. Additionally, biocompatibility and degradation tests of the silk fibroin with and without thin-film platinum electrodes were carried out.
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Affiliation(s)
- Denise Molinnus
- Institute of Nano- and Biotechnologies (INB), FH Aachen, Campus Jülich, Heinrich-Mußmann-Strasse 1, 52428, Jülich, Germany
| | - Aleksander Drinic
- Fibrothelium GmbH, TRIWO Technopark Aachen, Philipsstr. 8, 52068, Aachen, Germany
| | - Heiko Iken
- Institute of Nano- and Biotechnologies (INB), FH Aachen, Campus Jülich, Heinrich-Mußmann-Strasse 1, 52428, Jülich, Germany
| | - Nadja Kröger
- Department of Plastic, Reconstructive and Aesthetic Surgery, University Hospital of Cologne, Kerpener Str. 62, 50937, Cologne, Germany
| | - Max Zinser
- Department of Plastic, Reconstructive and Aesthetic Surgery, University Hospital of Cologne, Kerpener Str. 62, 50937, Cologne, Germany
| | - Ralf Smeets
- Department of Oral and Maxillofacial Surgery, Division of Regenerative Orofacial Medicine, University Medical Center Hamburg-Eppendorf, Martinistraße 52, Hamburg, Germany
| | - Marius Köpf
- Fibrothelium GmbH, TRIWO Technopark Aachen, Philipsstr. 8, 52068, Aachen, Germany
| | - Alexander Kopp
- Fibrothelium GmbH, TRIWO Technopark Aachen, Philipsstr. 8, 52068, Aachen, Germany
| | - Michael J Schöning
- Institute of Nano- and Biotechnologies (INB), FH Aachen, Campus Jülich, Heinrich-Mußmann-Strasse 1, 52428, Jülich, Germany; Forschungszentrum Jülich GmbH, Institute of Biological Information Processing (IBI-3), Wilhelm-Johnen-Strasse 6, 52425, Jülich, Germany.
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11
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Fu J, Li XB, Wang LX, Lv XH, Lu Z, Wang F, Xia Q, Yu L, Li CM. One-Step Dip-Coating-Fabricated Core-Shell Silk Fibroin Rice Paper Fibrous Scaffolds for 3D Tumor Spheroid Formation. ACS APPLIED BIO MATERIALS 2020; 3:7462-7471. [PMID: 35019488 DOI: 10.1021/acsabm.0c00679] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Bioscaffolds are important substrates for supporting three-dimensional (3D) cell cultures. Silk fibroin (SF) is an attractive biomaterial in tissue engineering because of its good biocompatibility and mechanical properties. Electrospinning is one of the most often used approaches to fabricate SF fibrous scaffolds; yet, this technique still faces many challenges, such as low yield, residual organic solvents, limited extensibility of fibers, and a lack of spatial control over pore size. To circumvent these limitations, a core-shell SF on rice paper (SF@RP) fibrous scaffold was fabricated using a mild one-step dip-coating method. The cellulose fiber matrix of RP is the physical basis of the 3D scaffold, whereas the SF coating on the cellulose fiber controls the adhesion/spreading of the cells. The results indicated that by tuning the secondary structure of SF on the surface of a SF@RP scaffold, the cell behavior on SF@RP could be tuned. Tumor spheroids can be formed on SF@RP scaffolds with a dominant random secondary structure, in contrast to cells adhering and spreading on SF@RP scaffolds with a higher ratio of β-sheet secondary structures. Direct culturing of breast cancer MDA-MB-231 and MCF-7, lung cancer A549, prostate cancer DU145, and liver cancer HepG2 cells could spontaneously lead to corresponding tumor spheroids on SF@RP. In addition, the physiological characteristics of HepG2 tumor spheroids were investigated, and the results showed that compared with HepG2 monolayer cells, CYP3A4, CYP1A1, and albumin gene expression levels in HepG2 cell spheres formed on SF@RP scaffolds were significantly higher. Moreover, these spheroids showed higher drug resistance. In summary, these SF@RP scaffolds prepared by the dip-coating method are biocompatible substrates for cell culture, especially for tumor cell spheroid formation.
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Affiliation(s)
- Jingjing Fu
- Institute for Clean Energy & Advanced Materials, School of Materials & Energy, Southwest University, 1 Tiansheng Road, Chongqing 400715, P. R. China
| | - Xiao Bai Li
- Institute for Clean Energy & Advanced Materials, School of Materials & Energy, Southwest University, 1 Tiansheng Road, Chongqing 400715, P. R. China
| | - Lin Xiang Wang
- Institute for Clean Energy & Advanced Materials, School of Materials & Energy, Southwest University, 1 Tiansheng Road, Chongqing 400715, P. R. China
| | - Xiao Hui Lv
- Institute for Clean Energy & Advanced Materials, School of Materials & Energy, Southwest University, 1 Tiansheng Road, Chongqing 400715, P. R. China
| | - Zhisong Lu
- Institute for Clean Energy & Advanced Materials, School of Materials & Energy, Southwest University, 1 Tiansheng Road, Chongqing 400715, P. R. China
| | - Feng Wang
- State Key Laboratory of Silkworm Genome Biology, Southwest University, 1 Tiansheng Road, Chongqing 400715, P. R. China.,Chongqing Engineering and Technology Research Center for Novel Silk Materials, Southwest University, 1 Tiansheng Road, Chongqing 400715, P. R. China
| | - Qingyou Xia
- State Key Laboratory of Silkworm Genome Biology, Southwest University, 1 Tiansheng Road, Chongqing 400715, P. R. China.,Chongqing Engineering and Technology Research Center for Novel Silk Materials, Southwest University, 1 Tiansheng Road, Chongqing 400715, P. R. China
| | - Ling Yu
- Institute for Clean Energy & Advanced Materials, School of Materials & Energy, Southwest University, 1 Tiansheng Road, Chongqing 400715, P. R. China
| | - Chang Ming Li
- Institute for Clean Energy & Advanced Materials, School of Materials & Energy, Southwest University, 1 Tiansheng Road, Chongqing 400715, P. R. China.,Institute of Advanced Cross-field Science, Qingdao University, Qingdao 266071, P. R. China
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12
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Spider Silk Fibroin Protein Heterologously Produced in Rice Seeds Reduce Diabetes and Hypercholesterolemia in Mice. PLANTS 2020; 9:plants9101282. [PMID: 32998453 PMCID: PMC7650732 DOI: 10.3390/plants9101282] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 09/25/2020] [Accepted: 09/26/2020] [Indexed: 11/16/2022]
Abstract
Silk fibroin proteins are biomaterials with diverse applications. These spider and silkworm proteins have specific biological effects when consumed by mammals; in addition to reducing blood pressure and blood glucose and cholesterol levels, they have anti-human immunodeficiency virus activity. In the present study, rice (Oryza sativa) was engineered to produce the C-terminus of the major ampullate spidroin protein from the spider Araneus ventricosus under the control of a Prolamin promoter. Homozygous transgenic rice lines were identified, and the therapeutic effect of this spider silk fibroin protein on the lipid and glucose metabolism was analyzed in a mouse model. Feeding fat-fed mice, the transgenic rice seeds for four weeks reduced serum concentrations of triglycerides, total cholesterol, low-density lipoprotein cholesterol, glutamic oxaloacetic transaminase, and glutamic pyruvic transaminase, and lowered blood glucose levels. This is the first study to investigate the effects of consumption of rice seeds heterologously expressing spider silk fibroin protein in a mammalian model. Our findings suggest that functional foods containing spider silk fibroin protein might be useful as potential pharmaceutical materials for preventing and treating diabetes, hyperlipidemia, and hypercholesterolemia.
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13
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Laomeephol C, Ferreira H, Kanokpanont S, Neves NM, Kobayashi H, Damrongsakkul S. Dual-functional liposomes for curcumin delivery and accelerating silk fibroin hydrogel formation. Int J Pharm 2020; 589:119844. [PMID: 32905796 DOI: 10.1016/j.ijpharm.2020.119844] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 08/14/2020] [Accepted: 08/31/2020] [Indexed: 02/06/2023]
Abstract
The administration of a drug-loaded implantable hydrogel at the tumor site after surgical resection is a viable approach to prevent the local recurrence or metastasis. Dimyristoyl glycerophosphorylglycerol (DMPG)-based liposomes were developed for inducing the rapid gelation of silk fibroin (SF) and delivering an anticancer drug, curcumin. Curcumin was loaded in the liposomes and the stability of curcumin was enhanced. The gelation time of liposome-induced SF hydrogels ranged from 3 min to more than 6 h. The biological activity of liposome-SF hydrogels was evaluated in vitro using L929 fibroblasts and MDA-MB-231 breast cancer cells. The release of curcumin can inhibit the growth of cancer cells. Both cells cultured on the surface of the hydrogels loaded with curcumin displayed low cell survival due to the combination of low cell attachment and cytotoxicity of curcumin. Liposome-SF hydrogels show potential as a sealant administered at the tumor site to eliminate residual cancer cells after tumor removal.
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Affiliation(s)
- Chavee Laomeephol
- Biomedical Engineering Research Center, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand; Biomaterial Engineering for Medical and Health Research Unit, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand; International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Ibaraki, Japan
| | - Helena Ferreira
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark - Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Sorada Kanokpanont
- Biomedical Engineering Research Center, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand; Biomaterial Engineering for Medical and Health Research Unit, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand; Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand
| | - Nuno M Neves
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark - Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Hisatoshi Kobayashi
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Ibaraki, Japan.
| | - Siriporn Damrongsakkul
- Biomedical Engineering Research Center, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand; Biomaterial Engineering for Medical and Health Research Unit, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand; Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand.
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14
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Gupta S, Alrabaiah H, Christophe M, Rahimi-Gorji M, Nadeem S, Bit A. Evaluation of silk-based bioink during pre and post 3D bioprinting: A review. J Biomed Mater Res B Appl Biomater 2020; 109:279-293. [PMID: 32865306 DOI: 10.1002/jbm.b.34699] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 07/15/2020] [Accepted: 07/21/2020] [Indexed: 12/25/2022]
Abstract
During past few decades, the demand for the replacement of damaged organs is increasing consistently. This is due to the advancement in tissue engineering, which opens the possibility of regeneration of damaged organs or tissues into functional parts with the help of 3D bioprinting. Bioprinting technology presents an excellent potential to develop complex structures with precise control over cell suspension and structure. A brief description of different types of 3D bioprinting techniques, including inkjet-based, laser-based, and extrusion-based bioprinting is presented here. Due to innate advantageous features like tunable biodegradability, biocompatibility, elasticity and mechanical robustness, silk has carved a niche in the realm of tissue engineering. In this review article, the focus is to highlight the possible approach of exploring silk as bioink for fabrication of bioprinted implants using 3D bioprinting. This review discusses different type of degumming, dissolution techniques for extraction of proteins from different sources of silk. Different recently reported 3D bioprinting techniques suitable for silk-based bioink are further elaborated. Postprinting characterization of resultant scaffolds are also describe here. However, there is an astounding progress in 3D bioprinting technology, still there is a need to develop further the current bioprinting technology to make it suitable for generation of heterogeneous tissue construct. The possibility of utilizing the adhesive property of sericin to consider it as bioink is elaborated.
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Affiliation(s)
- Sharda Gupta
- Biomedical Engineering Department, National Institute of Technology, Raipur, India
| | - Hussam Alrabaiah
- College of Engineering, Al Ain University, Al Ain, United Arab Emirates.,Department of Mathematics, College of Sciences, Tafila Technical University, At-Tafilah, Jordan
| | - Marquette Christophe
- Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, Université de Lyon, Villeurbanne Cedex, France
| | | | - Sohail Nadeem
- Mathematics and its Applications in Life Sciences Research Group, Ton Duc Thang University, Ho Chi Minh City, Vietnam.,Faculty of Mathematics and Statistics, Ton Duc Thang University, Ho Chi Minh City, Vietnam
| | - Arindam Bit
- Biomedical Engineering Department, National Institute of Technology, Raipur, India
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15
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Ding X, Huang Y, Li X, Liu S, Tian F, Niu X, Chu Z, Chen D, Liu H, Fan Y. Three-dimensional silk fibroin scaffolds incorporated with graphene for bone regeneration. J Biomed Mater Res A 2020; 109:515-523. [PMID: 32506791 DOI: 10.1002/jbm.a.37034] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2019] [Revised: 05/04/2020] [Accepted: 05/10/2020] [Indexed: 12/11/2022]
Abstract
Porous three-dimensional (3D) silk fibroin (SF) scaffolds were widely applied for bone regeneration and showed excellent biocompatibility and biodegradability. Recently graphene was developed for bone scaffolds due to its osteogenic properties. Thus, we combine the SF and graphene to improve the osteogenic properties of SF scaffolds. In our study, we explored the incorporation of SF scaffolds with graphene to develop osteogenic scaffolds capable of accelerating bone formation. The 3D SF scaffolds were fabricated with different contents of graphene (0, 0.5, and 2%). Fluorescence images showed that the graphene nanosheets were homogeneously dispersed in the SF scaffolds. The addition of graphene affected the microarchitecture of the scaffolds. The G/SF scaffolds were cocultured with rat bone marrow-derived mesenchymal stem cells (rBMSCs) for 21 days. The cell morphology and cell proliferation study suggested that 0 and 0.5% G/SF scaffolds displayed good cell proliferation. In addition, immunofluorescent staining (e.g., osteonectin, osteopontin, and osteocalcin) and ALP activities indicated that the osteogenic properties was more actively exhibited on 0.5% G/SF scaffolds compared with the other groups. Our results indicated that SF scaffolds incorporated with graphene could be an appropriate scaffold for bone tissue engineering.
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Affiliation(s)
- Xili Ding
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, China
| | - Yan Huang
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, China
| | - Xiaoming Li
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, China
| | - Suting Liu
- Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, Beijing University of Chemical Technology, Beijing, China
| | - Feng Tian
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, China
| | - Xufeng Niu
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, China
| | - Zhaowei Chu
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, China
| | - Diansheng Chen
- Robot Institute, School of Mechanical Engineering and Automation, Beihang University, Beijing, China
| | - Haifeng Liu
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, China
| | - Yubo Fan
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, China
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16
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Zhang T, Du L, Zhao J, Ding J, Zhang P, Wang L, Xu B. Biomimetic angle-ply multi-lamellar scaffold for annulus fibrosus tissue engineering. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2020; 31:67. [PMID: 32705351 DOI: 10.1007/s10856-020-06404-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2019] [Revised: 05/21/2020] [Accepted: 07/12/2020] [Indexed: 06/11/2023]
Abstract
Constructing a biomimetic scaffold that replicates the complex architecture of intervertebral disc annulus fibrosus (AF) remains a major goal in AF tissue engineering. In this study, a biomimetic angle-ply multi-lamellar polycaprolactone/silk fibroin (PCL/SF) AF scaffold was fabricated. Wet-spinning was used to obtain aligned PCL/SF microfiber sheets, and these were excised into strips with microfibers aligned at +30° or -30° relative to the strip long axis. This was followed by stacking two strips with opposing fiber alignment and wrapping them concentrically around a mandrel. Our results demonstrated that the scaffold possessed spatial structure and mechanical properties comparable to natural AF. The scaffold supported rabbit AF cells adhesion, proliferation, infiltration and guided oriented growth and extracellular matrix deposition. In conclusion, our angle-ply multi-lamellar scaffold offers a potential solution for AF replacement therapy and warrants further attention in future investigations.
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Affiliation(s)
- Tongxing Zhang
- Tianjin Medical University, Tianjin, PR China
- Department of Spine Surgery, Tianjin Hospital, Tianjin, PR China
| | - Lilong Du
- Tianjin Medical University, Tianjin, PR China
- Department of Spine Surgery, Tianjin Hospital, Tianjin, PR China
| | | | - Ji Ding
- Tianjin Medical University, Tianjin, PR China
- Department of Spine Surgery, Tianjin Hospital, Tianjin, PR China
| | - Peng Zhang
- Tianjin Medical University, Tianjin, PR China
| | - Lianyong Wang
- The Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences, Nankai University, Tianjin, 300071, PR China
| | - Baoshan Xu
- Tianjin Medical University, Tianjin, PR China.
- Department of Spine Surgery, Tianjin Hospital, Tianjin, PR China.
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17
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Silk fibroin for skin injury repair: Where do things stand? Adv Drug Deliv Rev 2020; 153:28-53. [PMID: 31678360 DOI: 10.1016/j.addr.2019.09.003] [Citation(s) in RCA: 119] [Impact Index Per Article: 29.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 09/12/2019] [Accepted: 09/26/2019] [Indexed: 12/29/2022]
Abstract
Several synthetic and natural materials are used in soft tissue engineering and regenerative medicine with varying degrees of success. Among them, silkworm silk protein fibroin, a naturally occurring protein-based biomaterial, exhibits many promising characteristics such as biocompatibility, controllable biodegradability, tunable mechanical properties, aqueous preparation, minimal inflammation in host tissue, low cost and ease of use. Silk fibroin is often used alone or in combination with other materials in various formats and is also a promising delivery system for bioactive compounds as part of such repair scenarios. These properties make silk fibroin an excellent biomaterial for skin tissue engineering and repair applications. This review focuses on the promising characteristics and recent advances in the use of silk fibroin for skin wound healing and/or soft-tissue repair applications. The benefits and limitations of silk fibroin as a scaffolding biomaterial in this context are also discussed. STATEMENT OF SIGNIFICANCE: Silk protein fibroin is a natural biomaterial with important biological and mechanical properties for soft tissue engineering applications. Silk fibroin is obtained from silkworms and can be purified using alkali or enzyme based degumming (removal of glue protein sericin) procedures. Fibroin is used alone or in combination with other materials in different scaffold forms, such as nanofibrous mats, hydrogels, sponges or films tailored for specific applications. The investigations carried out using silk fibroin or its blends in skin tissue engineering have increased dramatically in recent years due to the advantages of this unique biomaterial. This review focuses on the promising characteristics of silk fibroin for skin wound healing and/or soft-tissue repair applications.
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18
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Janani G, Kumar M, Chouhan D, Moses JC, Gangrade A, Bhattacharjee S, Mandal BB. Insight into Silk-Based Biomaterials: From Physicochemical Attributes to Recent Biomedical Applications. ACS APPLIED BIO MATERIALS 2019; 2:5460-5491. [DOI: 10.1021/acsabm.9b00576] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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19
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Chen G, Su Y, Cai Y, He L, Yang G. Comparative transcriptomic analysis reveals beneficial effect of dietary mulberry leaves on the muscle quality of finishing pigs. Vet Med Sci 2019; 5:526-535. [PMID: 31486291 PMCID: PMC6868455 DOI: 10.1002/vms3.187] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Background The aim of this study was to investigate the effect of dietary mulberry leaves on the transcriptome profiles of finishing pigs. RNA‐Seq was used to identify differentially expressed genes (DEGs) in the longissimus dorsi of 56 pigs fed either a traditional diet or diets supplemented with 3%, 6% or 9% mulberry leaf powder, and both gene ontology (GO) function and Kyoto encyclopedia of genes and genomes (KEGG) pathway enrichment analyses were performed. Furthermore, protein–protein interaction (PPI) network and the subnet module analysis were used to identify genes with beneficial potential, and quantitative real‐time polymerase chain reaction (qRT‐PCR) was used to validate the expression patterns revealed by RNA‐Seq. Results Pigs fed with the 6% mulberry diet exhibited greater average daily gain, lower water loss and lower shear force than the control group and yielded 531 DEGs, including 271 and 260 upregulated and downregulated genes, respectively. Function analysis revealed that the DEGs were significantly enriched in functions related to muscle growth and development. Furthermore, several genes (i.e. ACOT4, ECHS1, HACD1, NPR1, ADCY2, MGLL and IRS1) were enriched in a KEGG pathway that was associated with fatty acid metabolism, and in the PPI subnet module, four of eight node genes, namely TNNC1, MYL3, TCAP and TNNT1, were associated with muscle formation and development. The upregulation of these genes, including TNNC1, TNNT1 and MYL3, was confirmed by qRT‐PCR. Conclusions Dietary mulberry leaves (6%) may improve the muscle quality of pigs by modulating the expression of several key genes, such as TNNC1, MYL3 and TNNT1. The study was aimed to explain the effect of the inclusion of mulberry in the diet of pigs on transcriptome profiling. The inclusion of mulberry in the diet might be helpful in muscle formation and development of pigs by modulating the expression levels of three genes including TNNC1, MYL3 and TNNT1![]()
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Affiliation(s)
- Guoshun Chen
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China
| | - Yingyu Su
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China
| | - Yu Cai
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China
| | - Lianghong He
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China
| | - Gang Yang
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, China
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20
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Pasternak G, Yang Y, Santos BB, Brunello F, Hanczyc MM, Motta A. Regenerated silk fibroin membranes as separators for transparent microbial fuel cells. Bioelectrochemistry 2018; 126:146-155. [PMID: 30597451 DOI: 10.1016/j.bioelechem.2018.12.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Revised: 12/10/2018] [Accepted: 12/12/2018] [Indexed: 12/17/2022]
Abstract
In recent years novel applications of bioelectrochemical systems are exemplified by phototrophic biocathodes, biocompatible enzymatic fuel cells and biodegradable microbial fuel cells (MFCs). Herein, transparent silk fibroin membranes (SFM) with various fibroin content (2%, 4% and 8%) were synthesised and employed as separators in MFCs and compared with standard cation exchange membranes (CEM) as a control. The highest real-time power performance of thin-film SFM was reached by 2%-SFM separators: 25.7 ± 7.4 μW, which corresponds to 68% of the performance of the CEM separators (37.7 ± 3.1 μW). Similarly, 2%-SFM revealed the highest coulombic efficiency of 6.65 ± 1.90%, 74% of the CEM efficiency. Current for 2%-SFM reached 0.25 ± 0.03 mA (86% of CEM control). Decrease of power output was observed after 23 days for 8% and 4% and was a consequence of deterioration of SFMs, determined by physical, chemical and biological studies. This is the first time that economical and transparent silk fibroin polymers were successfully employed in MFCs.
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Affiliation(s)
- Grzegorz Pasternak
- Laboratory for Artificial Biology, Centre for Integrative Biology, University of Trento, Polo Scientifico e Tecnologico Fabio Ferrari, Polo B, Via Sommarive 9, 38123 Povo TN, Italy; Faculty of Chemistry, Wrocław University of Technology, Wyb. Wyspiańskiego 27, 50-370 Wrocław, Poland.
| | - Yuejiao Yang
- Department of Industrial Engineering and BIOtech Research Center, University of Trento, via Sommarive 9, 38123 Trento, Italy
| | - Bruno Bosquiroli Santos
- Laboratory for Artificial Biology, Centre for Integrative Biology, University of Trento, Polo Scientifico e Tecnologico Fabio Ferrari, Polo B, Via Sommarive 9, 38123 Povo TN, Italy; Engineering School of Lorena, University of São Paulo, 12-602-810 Lorena, SP, Brazil
| | - Federico Brunello
- Laboratory for Artificial Biology, Centre for Integrative Biology, University of Trento, Polo Scientifico e Tecnologico Fabio Ferrari, Polo B, Via Sommarive 9, 38123 Povo TN, Italy
| | - Martin M Hanczyc
- Laboratory for Artificial Biology, Centre for Integrative Biology, University of Trento, Polo Scientifico e Tecnologico Fabio Ferrari, Polo B, Via Sommarive 9, 38123 Povo TN, Italy; Chemical and Biological Engineering, University of New Mexico, USA
| | - Antonella Motta
- Department of Industrial Engineering and BIOtech Research Center, University of Trento, via Sommarive 9, 38123 Trento, Italy
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21
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DeBari MK, Abbott RD. Microscopic considerations for optimizing silk biomaterials. WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY 2018; 11:e1534. [DOI: 10.1002/wnan.1534] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Revised: 05/15/2018] [Accepted: 05/26/2018] [Indexed: 12/11/2022]
Affiliation(s)
- Megan K. DeBari
- Materials Science and Engineering Department Carnegie Mellon University Pittsburgh Pennsylvania
| | - Rosalyn D. Abbott
- Biomedical Engineering Department Carnegie Mellon University Pittsburgh Pennsylvania
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22
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Deptuch T, Dams-Kozlowska H. Silk Materials Functionalized via Genetic Engineering for Biomedical Applications. MATERIALS (BASEL, SWITZERLAND) 2017; 10:E1417. [PMID: 29231863 PMCID: PMC5744352 DOI: 10.3390/ma10121417] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Revised: 12/04/2017] [Accepted: 12/06/2017] [Indexed: 12/21/2022]
Abstract
The great mechanical properties, biocompatibility and biodegradability of silk-based materials make them applicable to the biomedical field. Genetic engineering enables the construction of synthetic equivalents of natural silks. Knowledge about the relationship between the structure and function of silk proteins enables the design of bioengineered silks that can serve as the foundation of new biomaterials. Furthermore, in order to better address the needs of modern biomedicine, genetic engineering can be used to obtain silk-based materials with new functionalities. Sequences encoding new peptides or domains can be added to the sequences encoding the silk proteins. The expression of one cDNA fragment indicates that each silk molecule is related to a functional fragment. This review summarizes the proposed genetic functionalization of silk-based materials that can be potentially useful for biomedical applications.
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Affiliation(s)
- Tomasz Deptuch
- Department of Cancer Immunology, Chair of Medical Biotechnology, Poznan University of Medical Sciences, 61-688 Poznan, Poland.
- Department of Diagnostics and Cancer Immunology, Greater Poland Cancer Centre, 61-688 Poznan, Poland.
| | - Hanna Dams-Kozlowska
- Department of Cancer Immunology, Chair of Medical Biotechnology, Poznan University of Medical Sciences, 61-688 Poznan, Poland.
- Department of Diagnostics and Cancer Immunology, Greater Poland Cancer Centre, 61-688 Poznan, Poland.
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23
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Bradner SA, Partlow BP, Cebe P, Omenetto FG, Kaplan DL. Fabrication of elastomeric silk fibers. Biopolymers 2017; 107:10.1002/bip.23030. [PMID: 28555880 PMCID: PMC5524596 DOI: 10.1002/bip.23030] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Revised: 05/21/2017] [Accepted: 05/22/2017] [Indexed: 12/26/2022]
Abstract
Methods to generate fibers from hydrogels, with control over mechanical properties, fiber diameter, and crystallinity, while retaining cytocompatibility and degradability, would expand options for biomaterials. Here, we exploited features of silk fibroin protein for the formation of tunable silk hydrogel fibers. The biological, chemical, and morphological features inherent to silk were combined with elastomeric properties gained through enzymatic crosslinking of the protein. Postprocessing via methanol and autoclaving provided tunable control of fiber features. Mechanical, optical, and chemical analyses demonstrated control of fiber properties by exploiting the physical cross-links, and generating double network hydrogels consisting of chemical and physical cross-links. Structure and chemical analyses revealed crystallinity from 30 to 50%, modulus from 0.5 to 4 MPa, and ultimate strength 1-5 MPa depending on the processing method. Fabrication and postprocessing combined provided fibers with extensibility from 100 to 400% ultimate strain. Fibers strained to 100% exhibited fourth order birefringence, revealing macroscopic orientation driven by chain mobility. The physical cross-links were influenced in part by the drying rate of fabricated materials, where bound water, packing density, and microstructural homogeneity influenced cross-linking efficiency. The ability to generate robust and versatile hydrogel microfibers is desirable for bottom-up assembly of biological tissues and for broader biomaterial applications.
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Affiliation(s)
- Sarah A Bradner
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts
| | - Benjamin P Partlow
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts
| | - Peggy Cebe
- Department of Physics and Astronomy, Tufts University, Medford, Massachusetts
| | - Fiorenzo G Omenetto
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts
| | - David L Kaplan
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts
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24
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Kuhbier JW, Coger V, Mueller J, Liebsch C, Schlottmann F, Bucan V, Vogt PM, Strauss S. Influence of direct or indirect contact for the cytotoxicity and blood compatibility of spider silk. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2017; 28:127. [PMID: 28721663 DOI: 10.1007/s10856-017-5936-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Accepted: 06/21/2017] [Indexed: 05/26/2023]
Abstract
Spider silk became one of the most-researched biomaterials in the last years due to its unique mechanical strength and most favourable chemical composition for tissue engineering purposes. However, standardized analysis of cytocompatibility is missing. Therefore, the aim of this study was to investigate hemolysis, cytotoxicity of native spider silk as well as influences on the cell culture medium. Changes of cell culture medium composition, osmolarity as well as glucose and lactate content were determined via ELISA measurement. Possible hemolysis and cytotoxicity in vitro of spider silk were performed via measurement of hemoglobin release of human red blood cells or relative metabolic activity of L929 fibroblasts, respectively, according to international standard procedures. In ELISA measurement, no significant changes in medium composition could be found in this study. Spider silk was not hemolytic in direct and indirect testing. However, a borderline cytotoxicity according to definitions was found in indirect cytotoxicity testing. Nevertheless, in direct cytotoxicity testing, relative metabolic activity measurement revealed that spider silk is not cytotoxic under these conditions. This is the first study to conduct standardized tests regarding cytotoxicity and hemolysis of native spider silk, which might be considered inert in cell culture. As neither hemolysis nor cytotoxicity was found in direct contact in standardized procedures, safety in biomedical applications may be assumed. The indirect cytotoxicity seems to play a minor role in vivo. However, a borderline toxicity was revealed, suggesting potential leachables not yet identified. Displays one of the weaving frames used in this study after seeding with the single drop technique described herein.
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Affiliation(s)
- J W Kuhbier
- Department of Plastic, Aesthetic, Hand and Reconstructive Surgery, Medical School Hannover, Carl-Neuberg-Strasse 1, Hannover, 30625, Germany.
| | - V Coger
- Department of Plastic, Aesthetic, Hand and Reconstructive Surgery, Medical School Hannover, Carl-Neuberg-Strasse 1, Hannover, 30625, Germany
| | - J Mueller
- Department of Plastic, Aesthetic, Hand and Reconstructive Surgery, Medical School Hannover, Carl-Neuberg-Strasse 1, Hannover, 30625, Germany
| | - C Liebsch
- Department of Plastic, Aesthetic, Hand and Reconstructive Surgery, Medical School Hannover, Carl-Neuberg-Strasse 1, Hannover, 30625, Germany
| | - F Schlottmann
- Department of Plastic, Aesthetic, Hand and Reconstructive Surgery, Medical School Hannover, Carl-Neuberg-Strasse 1, Hannover, 30625, Germany
| | - V Bucan
- Department of Plastic, Aesthetic, Hand and Reconstructive Surgery, Medical School Hannover, Carl-Neuberg-Strasse 1, Hannover, 30625, Germany
| | - P M Vogt
- Department of Plastic, Aesthetic, Hand and Reconstructive Surgery, Medical School Hannover, Carl-Neuberg-Strasse 1, Hannover, 30625, Germany
| | - S Strauss
- Department of Plastic, Aesthetic, Hand and Reconstructive Surgery, Medical School Hannover, Carl-Neuberg-Strasse 1, Hannover, 30625, Germany
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25
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Jo YY, Kim SG, Kwon KJ, Kweon H, Chae WS, Yang WG, Lee EY, Seok H. Silk Fibroin-Alginate-Hydroxyapatite Composite Particles in Bone Tissue Engineering Applications In Vivo. Int J Mol Sci 2017; 18:ijms18040858. [PMID: 28420224 PMCID: PMC5412440 DOI: 10.3390/ijms18040858] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Revised: 03/28/2017] [Accepted: 04/13/2017] [Indexed: 12/20/2022] Open
Abstract
The aim of this study was to evaluate the in vivo bone regeneration capability of alginate (AL), AL/hydroxyapatite (HA), and AL/HA/silk fibroin (SF) composites. Forty Sprague Dawley rats were used for the animal experiments. Central calvarial bone (diameter: 8.0 mm) defects were grafted with AL, AL/HA, or AL/HA/SF. New bone formation was evaluated by histomorphometric analysis. To demonstrate the immunocompatibility of each group, the level of tumor necrosis factor (TNF)-α expression was studied by immunohistochemistry (IHC) and quantitative reverse transcription polymerase chain reaction (qRT-PCR) at eight weeks post implantation. Additionally, osteogenic markers, such as fibroblast growth factor (FGF)-23, osteoprotegerin (OPG), and Runt-related transcription factor (Runx2) were evaluated by qPCR or IHC at eight weeks post implantation. The AL/HA/SF group showed significantly higher new bone formation than did the control group (p = 0.044) and the AL group (p = 0.035) at four weeks post implantation. Additionally, the AL/HA/SF group showed lower relative TNF-α mRNA levels and higher FGF-23 mRNA levels than the other groups did at eight weeks post implantation. IHC results demonstrated that the AL/HA/SF group had lower TNF-α expression and higher OPG and Runx2 expression at eight weeks post implantation. Additionally, no evidence of the inflammatory reaction or giant cell formation was observed around the residual graft material. We concluded that the AL/HA/SF composite could be effective as a scaffold for bone tissue engineering.
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Affiliation(s)
- You-Young Jo
- Sericultural & Apicultural Materials Division, National Institute of Agricultural Science, Wanju 55365, Korea.
| | - Seong-Gon Kim
- Department of Oral and Maxillofacial Surgery, Gangneung-Wonju National University, Gangneung 25457, Korea.
| | - Kwang-Jun Kwon
- Department of Oral and Maxillofacial Surgery, Gangneung-Wonju National University, Gangneung 25457, Korea.
| | - HaeYong Kweon
- Sericultural & Apicultural Materials Division, National Institute of Agricultural Science, Wanju 55365, Korea.
| | - Weon-Sik Chae
- Analysis Research Division, Daegu Center, Korea Basic Science Institute, Daegu 41566, Korea.
| | - Won-Geun Yang
- Analysis Research Division, Daegu Center, Korea Basic Science Institute, Daegu 41566, Korea.
| | - Eun-Young Lee
- Department of Oral and Maxillofacial Surgery, Chungbuk National University College of Medicine, Cheongju 28644, Korea.
- Department of Oral and Maxillofacial Surgery, Chungbuk National University Hospital, Cheongju 28644, Korea.
| | - Hyun Seok
- Department of Oral and Maxillofacial Surgery, Gangneung-Wonju National University, Gangneung 25457, Korea.
- Department of Oral and Maxillofacial Surgery, Chungbuk National University Hospital, Cheongju 28644, Korea.
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26
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Li X, Zhang Q, Ye D, Zhang J, Guo Y, You R, Yan S, Li M, Qu J. Fabrication and characterization of electrospun PCL/Antheraea pernyisilk fibroin nanofibrous scaffolds. POLYM ENG SCI 2016. [DOI: 10.1002/pen.24402] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Xiufang Li
- National Engineering Laboratory for Advanced Yarn and Fabric Formation and Clean Production, College of Textile Science and Engineering; Wuhan Textile University; Wuhan 430200 China
| | - Qiang Zhang
- National Engineering Laboratory for Advanced Yarn and Fabric Formation and Clean Production, College of Textile Science and Engineering; Wuhan Textile University; Wuhan 430200 China
| | - Dezhan Ye
- National Engineering Laboratory for Advanced Yarn and Fabric Formation and Clean Production, College of Textile Science and Engineering; Wuhan Textile University; Wuhan 430200 China
| | - Jie Zhang
- National Engineering Laboratory for Advanced Yarn and Fabric Formation and Clean Production, College of Textile Science and Engineering; Wuhan Textile University; Wuhan 430200 China
| | - Yuhang Guo
- National Engineering Laboratory for Advanced Yarn and Fabric Formation and Clean Production, College of Textile Science and Engineering; Wuhan Textile University; Wuhan 430200 China
| | - Renchuan You
- National Engineering Laboratory for Advanced Yarn and Fabric Formation and Clean Production, College of Textile Science and Engineering; Wuhan Textile University; Wuhan 430200 China
| | - Shuqin Yan
- National Engineering Laboratory for Advanced Yarn and Fabric Formation and Clean Production, College of Textile Science and Engineering; Wuhan Textile University; Wuhan 430200 China
| | - Mingzhong Li
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering; Soochow University; No. 199 Ren'ai Road, Industrial Park Suzhou 215123 China
| | - Jing Qu
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering; Soochow University; No. 199 Ren'ai Road, Industrial Park Suzhou 215123 China
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27
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Panda N, Bissoyi A, Pramanik K, Biswas A. Development of novel electrospun nanofibrous scaffold from P. ricini and A. mylitta silk fibroin blend with improved surface and biological properties. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 48:521-32. [DOI: 10.1016/j.msec.2014.12.010] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2014] [Revised: 10/12/2014] [Accepted: 12/04/2014] [Indexed: 11/30/2022]
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28
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Chamberlain LM, Holt-Casper D, Gonzalez-Juarrero M, Grainger DW. Extended culture of macrophages from different sources and maturation results in a common M2 phenotype. J Biomed Mater Res A 2015; 103:2864-74. [PMID: 25684281 DOI: 10.1002/jbm.a.35415] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2014] [Revised: 12/12/2014] [Accepted: 01/20/2015] [Indexed: 01/13/2023]
Abstract
Inflammatory responses to biomaterials heavily influence the environment surrounding implanted devices, often producing foreign-body reactions. The macrophage is a key immunomodulatory cell type consistently associated with implanted biomaterials and routinely used in short-term in vitro cell studies of biomaterials aiming to reproduce host responses. Inconsistencies within these studies, including differently sourced cells, different durations of culture, and assessment of different activation markers, lead to many conflicting results in vitro that confound consistency and conclusions. We hypothesize that different experimentally popular monocyte-macrophage cell types have intrinsic in vitro culture-specific differences that yield conflicting results. Recent studies demonstrate changes in cultured macrophage cytokine expression over time, leading to the hypothesis that changes in macrophage phenotype also occur in response to extended culture. Here, macrophage cells of different transformed and primary-derived origins were cultured for 21 days on model polymer biomaterials. Cell type-based differences in morphology and cytokine/chemokine expression as well as changes in cell surface biomarkers associated with differentiation stage, activation state, and adhesion were compared. Results reflect consistent macrophage development toward an M2 phenotype via up-regulation of the macrophage mannose receptor for all cell types following 21-day extended culture. Significantly, implanted biomaterials experiencing the foreign-body response and encapsulation in vivo often elicit a shift toward an analogous M2 macrophage phenotype. In vitro "default" of macrophage cultures, regardless of lineage, to this M2 state in the presence of biomaterials at long culture periods is not recognized, but has important implications to in vitro modeling of in vivo host response.
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Affiliation(s)
- Lisa M Chamberlain
- Cell and Molecular Biology Program, Colorado State University, Fort Collins, Colorado, 80523.,Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, Salt Lake City, Utah, 84112-5820
| | - Dolly Holt-Casper
- Department of Bioengineering, University of Utah, Salt Lake City, Utah, 84112-5820
| | - Mercedes Gonzalez-Juarrero
- Cell and Molecular Biology Program, Colorado State University, Fort Collins, Colorado, 80523.,Department of Microbiology, Immunology, and Pathology, Colorado State University, Fort Collins, Colorado, 80523
| | - David W Grainger
- Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, Salt Lake City, Utah, 84112-5820.,Department of Bioengineering, University of Utah, Salt Lake City, Utah, 84112-5820
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29
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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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30
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Neo PY, Tan DJA, Shi P, Toh SL, Goh JCH. Enhancing analysis of cells and proteins by fluorescence imaging on silk-based biomaterials: modulating the autofluorescence of silk. Tissue Eng Part C Methods 2014; 21:218-28. [PMID: 25050876 DOI: 10.1089/ten.tec.2014.0209] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Silk is a versatile and established biomaterial for various tissue engineering purposes. However, it also exhibits strong autofluorescence signals-thereby hindering fluorescence imaging analysis of cells and proteins on silk-derived biomaterials. Sudan Black B (SB) is a lysochrome dye commonly used to stain lipids in histology. It has also been reported to be able to quench autofluorescence of tissues in histology and has been tested on artificial biomedical polymers in recent years. It was hypothesized that SB would exert similar quenching effects on silk, modulating the autofluorescence signals, and thereby enabling improved imaging analysis of cells and molecules of interests. The quenching effect of SB on the intrinsic fluorescence properties of silk and on commercial fluorescent dyes were first investigated in this study. SB was then incorporated into typical fluorescence-based staining protocols to study its effectiveness in improving fluorescence-based imaging of the cells and proteins residing with the silk-based biomaterials. Silk processed into various forms of biomaterials (e.g., films, sponges, fibers, and electrospun mats) was seeded with cells and cultured in vitro. At sacrificial time points, specimens were harvested, fixed, and prepared for fluorescence staining. SB, available commercially as a powder, was dissolved in 70% ethanol (0.3% [w/v]) to form staining solutions. SB treatment was introduced at the last step of typical immunofluorescence staining protocols for 15-120 min. For actin staining protocols by phalloidin toxin, SB staining solutions were added before and after permeabilization with Triton-X for 15-30 min. Results showed that ideal SB treatment duration is about 15 min. Apart from being able to suppress the autofluorescence of silk, this treatment duration was also not too long to adversely affect the fluorescent labeling probes used. The relative improvement brought about by SB treatment was most evident in the blue and green emission wavelengths compared with the red emission wavelength. This study has showed that the use of SB is a cost and time effective approach to enhance fluorescence-based imaging analyses of cell-seeded silk biomaterials, which otherwise would have been hindered by the unmodulated autofluorescence signals.
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Affiliation(s)
- Puay Yong Neo
- 1 Department of Biomedical Engineering, Faculty of Engineering, National University of Singapore , Singapore , Singapore
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31
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Patterson JL, Arenas-Gamboa AM, Wang TY, Hsiao HC, Howell DW, Pellois JP, Rice-Ficht A, Bondos SE. Materials composed of theDrosophilaHox protein Ultrabithorax are biocompatible and nonimmunogenic. J Biomed Mater Res A 2014; 103:1546-53. [DOI: 10.1002/jbm.a.35295] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2013] [Revised: 06/25/2014] [Accepted: 07/23/2014] [Indexed: 12/23/2022]
Affiliation(s)
- Jan L. Patterson
- Department of Molecular and Cellular Medicine; Texas A&M Health Science Center; College Station Texas 77843
| | - Angela M. Arenas-Gamboa
- Department of Molecular and Cellular Medicine; Texas A&M Health Science Center; College Station Texas 77843
| | - Ting-Yi Wang
- Department of Biochemistry and Biophysics; Texas A&M University; College Station Texas 77843
| | - Hao-Ching Hsiao
- Department of Molecular and Cellular Medicine; Texas A&M Health Science Center; College Station Texas 77843
| | - David W. Howell
- Department of Molecular and Cellular Medicine; Texas A&M Health Science Center; College Station Texas 77843
| | - Jean-Philippe Pellois
- Department of Biochemistry and Biophysics; Texas A&M University; College Station Texas 77843
| | - Allison Rice-Ficht
- Department of Biochemistry and Biophysics; Texas A&M University; College Station Texas 77843
| | - Sarah E. Bondos
- Department of Molecular and Cellular Medicine; Texas A&M Health Science Center; College Station Texas 77843
- Department of Biochemistry and Cell Biology; Rice University; Houston Texas 77005
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32
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Lee MJ, Park JB, Kim HH, Ki CS, Park SY, Kim HJ, Park YH. Surface coating of hydroxyapatite on silk nanofiber through biomineralization using ten times concentrated simulated body fluid and the evaluation for bone regeneration. Macromol Res 2014. [DOI: 10.1007/s13233-014-2114-x] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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33
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Germershaus O, Werner V, Kutscher M, Meinel L. Deciphering the mechanism of protein interaction with silk fibroin for drug delivery systems. Biomaterials 2014; 35:3427-34. [DOI: 10.1016/j.biomaterials.2013.12.083] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2013] [Accepted: 12/22/2013] [Indexed: 12/24/2022]
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34
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35
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Hogerheyde TA, Suzuki S, Stephenson SA, Richardson NA, Chirila TV, Harkin DG, Bray LJ. Assessment of freestanding membranes prepared from Antheraea pernyi silk fibroin as a potential vehicle for corneal epithelial cell transplantation. Biomed Mater 2014; 9:025016. [PMID: 24565906 DOI: 10.1088/1748-6041/9/2/025016] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Freestanding membranes created from Bombyx mori silk fibroin (BMSF) offer a potential vehicle for corneal cell transplantation since they are transparent and support the growth of human corneal epithelial (HCE) cells. Fibroin derived from the wild silkworm Antheraea pernyi (APSF) might provide a superior material by virtue of containing putative cell-attachment sites that are absent from BMSF. Thus we have investigated the feasibility of producing transparent, freestanding membranes from APSF and have analysed the behaviour of HCE cells on this material. No significant differences in cell numbers or phenotype were observed in short term HCE cell cultures established on either fibroin. Production of transparent freestanding APSF membranes, however, proved to be problematic as cast solutions of APSF were more prone to becoming opaque, displayed significantly lower permeability and were more brittle than BMSF-membranes. Cultures of HCE cells established on either membrane developed a normal stratified morphology with cytokeratin pair 3/12 being immuno-localized to the superficial layers. We conclude that while it is feasible to produce transparent freestanding membranes from APSF, the technical difficulties associated with this biomaterial, along with an absence of enhanced cell growth, currently favour the continued development of BMSF as a preferred vehicle for corneal cell transplantation. Nevertheless, it remains possible that refinement of techniques for processing APSF might yet lead to improvements in the handling properties and performance of this material.
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Affiliation(s)
- Thomas A Hogerheyde
- School of Biomedical Sciences, Faculty of Health, Queensland University of Technology, Brisbane, Queensland 4001, Australia. Institute of Health and Biomedical Innovation, Queensland University of Technology, Kelvin Grove, Queensland 4059, Australia. Queensland Eye Institute, South Brisbane, Queensland 4101, Australia
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36
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Silk-Cocoon Matrix Immobilized Lipase Catalyzed Transesterification of Sunflower Oil for Production of Biodiesel. ACTA ACUST UNITED AC 2014. [DOI: 10.1155/2014/868535] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Biodiesel from sunflower oil using lipase chemically immobilized on silk-cocoon matrix in a packed-bed bioreactor was investigated. The immobilization was demonstrated by field-emission scanning electron microscopy and activity study. The lipase loading was 738.74 U (~0.01 g lipase powder)/g-lipase-immobilized matrix. The Km (Michaelis-Menten constant) of the free and the immobilized lipase was 451.26 μM and 257.26 μM, respectively. Low Km value of the immobilized lipase is attributed to the hydrophobic nature of the matrix that facilitated the substrate diffusion to the enzyme surface. The biodiesel yield of 81.62% was obtained at 48 hours reaction time, 6 : 1 methanol : oil ratio (v/v), and 30°C. The immobilized lipase showed high operational stability at 30°C. The substrate conversion was only marginally decreased till third cycle (each of 48 hours duration) of the reaction since less than even 5% of the original activity was decreased in each of the second and third cycle. The findings demonstrated the potential of the silk-cocoon as lipase immobilization matrix for industrial production of biodiesel.
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37
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Kundu B, Kurland NE, Bano S, Patra C, Engel FB, Yadavalli VK, Kundu SC. Silk proteins for biomedical applications: Bioengineering perspectives. Prog Polym Sci 2014. [DOI: 10.1016/j.progpolymsci.2013.09.002] [Citation(s) in RCA: 297] [Impact Index Per Article: 29.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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38
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Levin B, Rajkhowa R, Redmond SL, Atlas MD. Grafts in myringoplasty: utilizing a silk fibroin scaffold as a novel device. Expert Rev Med Devices 2014; 6:653-64. [DOI: 10.1586/erd.09.47] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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39
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Walker J, Shadanbaz S, Woodfield TBF, Staiger MP, Dias GJ. The
in vitro
and
in vivo
evaluation of the biocompatibility of Mg alloys. Biomed Mater 2013; 9:015006. [DOI: 10.1088/1748-6041/9/1/015006] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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40
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Silva SS, Popa EG, Gomes ME, Oliveira MB, Nayak S, Subia B, Mano JF, Kundu SC, Reis RL. Silk hydrogels from non-mulberry and mulberry silkworm cocoons processed with ionic liquids. Acta Biomater 2013; 9:8972-82. [PMID: 23845228 DOI: 10.1016/j.actbio.2013.06.044] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2013] [Revised: 06/21/2013] [Accepted: 06/26/2013] [Indexed: 12/17/2022]
Abstract
Matrices based on silk fibroin from the non-mulberry silkworm Antheraea mylitta and the mulberry silkworm Bombyx mori have demonstrated good applicability in regenerative medicine. However, the cocoons of A. mylitta are underutilized in part due to their lack of solubility in traditional organic solvents. Therefore, the present work investigates the solubilization and processing of degummed fibers obtained from the cocoons of both silkworm species into hydrogels using ionic liquids (ILs). The developed hydrogels exhibited a rubbery consistency, viscoelastic behavior and rapid degradation in the presence of protease XIV. Scanning electron and confocal microscopy images suggest that human adipose stem cells (hASCs) are able to adhere to and migrate at different levels within the hydrogel structures. Moreover, the MTS assay demonstrated the maintenance of cell metabolic activity for up to 28 days, while DNA quantification showed that hASCs were able to proliferate on the seeded hydrogels. The findings indicate that complete IL removal from the fabricated hydrogels results in a positive hASCs cellular response. Thus the present approach provides a unique opportunity to broaden the processability and application of silk fibroin obtained from A. mylitta cocoons for regenerative medicine, namely cartilage regeneration.
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41
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Kazemimostaghim M, Rajkhowa R, Tsuzuki T, Wang X. Ultrafine silk powder from biocompatible surfactant-assisted milling. POWDER TECHNOL 2013. [DOI: 10.1016/j.powtec.2013.08.028] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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42
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Tamayol A, Akbari M, Annabi N, Paul A, Khademhosseini A, Juncker D. Fiber-based tissue engineering: Progress, challenges, and opportunities. Biotechnol Adv 2013; 31:669-87. [PMID: 23195284 PMCID: PMC3631569 DOI: 10.1016/j.biotechadv.2012.11.007] [Citation(s) in RCA: 271] [Impact Index Per Article: 24.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2012] [Revised: 11/16/2012] [Accepted: 11/19/2012] [Indexed: 12/28/2022]
Abstract
Tissue engineering aims to improve the function of diseased or damaged organs by creating biological substitutes. To fabricate a functional tissue, the engineered construct should mimic the physiological environment including its structural, topographical, and mechanical properties. Moreover, the construct should facilitate nutrients and oxygen diffusion as well as removal of metabolic waste during tissue regeneration. In the last decade, fiber-based techniques such as weaving, knitting, braiding, as well as electrospinning, and direct writing have emerged as promising platforms for making 3D tissue constructs that can address the abovementioned challenges. Here, we critically review the techniques used to form cell-free and cell-laden fibers and to assemble them into scaffolds. We compare their mechanical properties, morphological features and biological activity. We discuss current challenges and future opportunities of fiber-based tissue engineering (FBTE) for use in research and clinical practice.
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Affiliation(s)
- Ali Tamayol
- Biomedical Engineering Department, McGill University, Montreal, H3A 0G1, Canada
| | - Mohsen Akbari
- Biomedical Engineering Department, McGill University, Montreal, H3A 0G1, Canada
| | - Nasim Annabi
- Center for Biomedical Engineering, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Cambridge, MA 02139, USA
- Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute ofTechnology, Cambridge, MA 02139, USA
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Cambridge, Massachusetts 02139, USA
| | - Arghya Paul
- Center for Biomedical Engineering, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Cambridge, MA 02139, USA
- Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute ofTechnology, Cambridge, MA 02139, USA
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Cambridge, Massachusetts 02139, USA
| | - Ali Khademhosseini
- Center for Biomedical Engineering, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Cambridge, MA 02139, USA
- Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute ofTechnology, Cambridge, MA 02139, USA
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Cambridge, Massachusetts 02139, USA
| | - David Juncker
- Biomedical Engineering Department, McGill University, Montreal, H3A 0G1, Canada
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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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Lima PAL, Resende CX, Soares GDDA, Anselme K, Almeida LE. Preparation, characterization and biological test of 3D-scaffolds based on chitosan, fibroin and hydroxyapatite for bone tissue engineering. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2013; 33:3389-95. [PMID: 23706225 DOI: 10.1016/j.msec.2013.04.026] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2012] [Revised: 03/09/2013] [Accepted: 04/10/2013] [Indexed: 12/23/2022]
Abstract
This work describes the preparation and characterization of porous 3D-scaffolds based on chitosan (CHI), chitosan/silk fibroin (CHI/SF) and chitosan/silk fibroin/hydroxyapatite (CHI/SF/HA) by freeze drying. The biomaterials were characterized by X-ray diffraction, attenuated total reflection Fourier transform infrared spectroscopy, thermogravimetric analysis, differential scanning calorimetry, scanning electron microscopy and energy dispersive spectroscopy. In addition, studies of porosity, pore size, contact angle and biological response of SaOs-2osteoblastic cells were performed. The CHI scaffolds have a porosity of 94.2±0.9%, which is statistically higher than the one presented by CHI/SF/HA scaffolds, 89.7±2.6%. Although all scaffolds were able to promote adhesion, growth and maintenance of osteogenic differentiation of SaOs-2 cells, the new 3D-scaffold based on CHI/SF/HA showed a significantly higher cell growth at 7 days and 21 days and the level of alkaline phosphatase at 14 and 21 days was statistically superior compared to other tested materials.
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Affiliation(s)
- Paulo Autran Leite Lima
- Departamento de Ciências de Materiais, Universidade Federal de Sergipe, São Cristóvão, Sergipe, Brazil
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Reddy N, Jiang Q, Yang Y. Investigation of the properties and potential medical applications of natural silk fibers produced by Eupackardia calleta. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2013; 24:460-9. [PMID: 23565687 DOI: 10.1080/09205063.2012.690712] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Silk has been considered biocompatible and used for medical applications for centuries. However, most of the silk currently used is produced by the domesticated silkworm, Bombyx mori. Recently, it has been demonstrated that silk produced by saturniidae insects such as Antheraea mylitta, Phylisomia ricini, and Antheraea pernyi had unique properties and suitable for medical applications. Therefore, efforts are being made to identify and study the structure and properties of silks produced by wild insects (non B. mori), spiders, and ants to understand their suitability for various medical applications. Eupackardia calleta belongs to the Saturniidae family of insects, but the structure, properties, and potential medical uses of silk fibers produced by E. calleta are not known. In this research, we have characterized the properties of silk fibers produced by E. calleta and the ability of the fibers to support the attachment and proliferation of mouse fibroblast cells. Silk produced by E. calleta had considerably different amino acid composition than B. mori and A. mylitta, P. ricini, and A. pernyi silks. Breaking tenacity of the E. calleta silk fibers at 400 MPa was between that of B. mori silk and A. mylitta, P. ricini, and A. pernyi silks. E. calleta showed good attachment and spreading of mouse fibroblast cells suggesting potential for medical applications.
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Affiliation(s)
- Narendra Reddy
- Department of Textiles, Merchandising and Fashion Design, University of Nebraska-Lincoln, 234 HECO Building, East Campus, Lincoln, NE 68583, USA
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Lee HS, Lee SY, Park SH, Lee JH, Ahn SK, Choi YM, Choi DJ, Chang JH. Antimicrobial medical sutures with caffeic acid phenethyl ester and their in vitro/in vivo biological assessment. MEDCHEMCOMM 2013. [DOI: 10.1039/c2md20289a] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Goujon N, Rajkhowa R, Wang X, Byrne N. Effect of solvent on ionic liquid dissolved regeneratedantheraea assamensissilk fibroin. J Appl Polym Sci 2012. [DOI: 10.1002/app.38666] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Das S, Pati D, Tiwari N, Nisal A, Sen Gupta S. Synthesis of Silk Fibroin–Glycopolypeptide Conjugates and Their Recognition with Lectin. Biomacromolecules 2012; 13:3695-702. [DOI: 10.1021/bm301170u] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Soumen Das
- Chemical
Engineering Division and ‡Polymer Science and Engineering Division, CReST, National Chemical Laboratory (CSIR), Dr. Homi Bhabha Road, Pune-411 008, India
| | - Debasis Pati
- Chemical
Engineering Division and ‡Polymer Science and Engineering Division, CReST, National Chemical Laboratory (CSIR), Dr. Homi Bhabha Road, Pune-411 008, India
| | - Neha Tiwari
- Chemical
Engineering Division and ‡Polymer Science and Engineering Division, CReST, National Chemical Laboratory (CSIR), Dr. Homi Bhabha Road, Pune-411 008, India
| | - Anuya Nisal
- Chemical
Engineering Division and ‡Polymer Science and Engineering Division, CReST, National Chemical Laboratory (CSIR), Dr. Homi Bhabha Road, Pune-411 008, India
| | - Sayam Sen Gupta
- Chemical
Engineering Division and ‡Polymer Science and Engineering Division, CReST, National Chemical Laboratory (CSIR), Dr. Homi Bhabha Road, Pune-411 008, India
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Wohlrab S, Müller S, Schmidt A, Neubauer S, Kessler H, Leal-Egaña A, Scheibel T. Cell adhesion and proliferation on RGD-modified recombinant spider silk proteins. Biomaterials 2012; 33:6650-9. [DOI: 10.1016/j.biomaterials.2012.05.069] [Citation(s) in RCA: 142] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2012] [Accepted: 05/30/2012] [Indexed: 10/28/2022]
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