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Akturk O, Kismet K, Yasti AC, Kuru S, Duymus ME, Kaya F, Caydere M, Hucumenoglu S, Keskin D. Wet electrospun silk fibroin/gold nanoparticle 3D matrices for wound healing applications. RSC Adv 2016. [DOI: 10.1039/c5ra24225h] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
The effectiveness of a silk fibroin/gold nanoparticle 3D nanofibrous matrix on a rat model of full-thickness dermal wound healing was investigated.
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Affiliation(s)
- Omer Akturk
- Department of Engineering Sciences
- Middle East Technical University
- Ankara
- Turkey
| | - Kemal Kismet
- Department of General Surgery
- Ankara Training and Research Hospital
- Ankara
- Turkey
| | - Ahmet C. Yasti
- Department of General Surgery
- Ankara Numune Hospital
- Ankara
- Turkey
- Department of General Surgery
| | - Serdar Kuru
- Department of General Surgery
- Ankara Training and Research Hospital
- Ankara
- Turkey
| | - Mehmet E. Duymus
- Department of General Surgery
- Ankara Training and Research Hospital
- Ankara
- Turkey
| | - Feridun Kaya
- Department of Gastroenterology Surgery
- Ankara Turkiye Yuksek Ihtisas Training and Research Hospital
- Ankara
- Turkey
| | - Muzaffer Caydere
- Department of Pathology
- Ankara Training and Research Hospital
- Ankara
- Turkey
| | - Sema Hucumenoglu
- Department of Pathology
- Ankara Training and Research Hospital
- Ankara
- Turkey
| | - Dilek Keskin
- Department of Engineering Sciences
- Middle East Technical University
- Ankara
- Turkey
- BIOMATEN
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53
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Liu Q, Liu H, Fan Y. Preparation of silk fibroin carriers for controlled release. Microsc Res Tech 2015; 80:312-320. [PMID: 26638113 DOI: 10.1002/jemt.22606] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Accepted: 11/09/2015] [Indexed: 12/24/2022]
Abstract
Silk fibroin provides a new option for controlled release systems as a result of its excellent biodegradability, biocompatibility, and mechanical properties. As the core material, silk fibroin can be designed and widely used in drug/gene delivery, regenerative medicine, and other biomedical fields. This review focuses on the preparation methods, loading molecules, and applications of silk fibroin-based controlled release systems including microspheres, microcapsules, films, microparticles, microneedles, liposomes, and hydrogels. These systems provide numerous advantages such as high encapsulation efficiency, avoiding loss of bioactivity and maintaining desirable range without peaks and valleys in comparison to the traditional administration approaches. Microsc. Res. Tech. 80:312-320, 2017. © 2015 Wiley Periodicals, Inc.
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Affiliation(s)
- Qiang Liu
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100191, People's Republic of China
| | - Haifeng Liu
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100191, People's Republic of China
| | - Yubo Fan
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100191, People's Republic of China.,National Research Center for Rehabilitation Technical Aids, Beijing, 100176, People's Republic of China
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54
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Werner V, Meinel L. From silk spinning in insects and spiders to advanced silk fibroin drug delivery systems. Eur J Pharm Biopharm 2015; 97:392-9. [DOI: 10.1016/j.ejpb.2015.03.016] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Revised: 03/07/2015] [Accepted: 03/12/2015] [Indexed: 01/24/2023]
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Martino MM, Briquez PS, Maruyama K, Hubbell JA. Extracellular matrix-inspired growth factor delivery systems for bone regeneration. Adv Drug Deliv Rev 2015; 94:41-52. [PMID: 25895621 DOI: 10.1016/j.addr.2015.04.007] [Citation(s) in RCA: 172] [Impact Index Per Article: 19.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2014] [Revised: 03/27/2015] [Accepted: 04/11/2015] [Indexed: 12/22/2022]
Abstract
Growth factors are very promising molecules to enhance bone regeneration. However, their translation to clinical use has been seriously limited, facing issues related to safety and cost-effectiveness. These problems derive from the vastly supra-physiological doses of growth factor used without optimized delivery systems. Therefore, these issues have motivated the development of new delivery systems allowing better control of the spatiotemporal release and signaling of growth factors. Because the extracellular matrix (ECM) naturally plays a fundamental role in coordinating growth factor activity in vivo, a number of novel delivery systems have been inspired by the growth factor regulatory function of the ECM. After introducing the role of growth factors during the bone regeneration process, this review exposes different issues that growth factor-based therapies have encountered in the clinic and highlights recent delivery approaches based on the natural interaction between growth factor and the ECM.
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Affiliation(s)
- Mikaël M Martino
- Immunology Frontier Research Center, Osaka University, Osaka, Japan.
| | - Priscilla S Briquez
- Institute of Bioengineering, School of Life Sciences and School of Engineering, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Kenta Maruyama
- Immunology Frontier Research Center, Osaka University, Osaka, Japan
| | - Jeffrey A Hubbell
- Institute of Bioengineering, School of Life Sciences and School of Engineering, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland; Institute for Molecular Engineering, University of Chicago, Chicago, IL, USA; Materials Science Division, Argonne National Laboratory, Argonne, IL, USA.
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56
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Schultz I, Wurzel J, Meinel L. Drug delivery of Insulin-like growth factor I. Eur J Pharm Biopharm 2015; 97:329-37. [DOI: 10.1016/j.ejpb.2015.04.026] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2015] [Revised: 04/15/2015] [Accepted: 04/22/2015] [Indexed: 12/20/2022]
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57
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Cai L, Han F, Hu J, Xu G, Huang Y, Lin X. The effect of the preparation process on the swelling behavior of silk fibroin-polyurethane composite hydrogels using a full factorial experimental design. JOURNAL OF POLYMER ENGINEERING 2015. [DOI: 10.1515/polyeng-2014-0186] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Abstract
Polyurethane prepolymer (PUP) was synthesized by polyethylene glycol (PEG) and polypropylene glycol (PPG) as the soft segments, isophorone diisocyanate (IPDI) as the hard segment and dimethylol propionic acid (DMPA) and diethylene glycol (DEG) as chain extenders. Silk fibroin (SF)-PU composite hydrogels were prepared by SF and PUP through chemical crosslinking and physical crosslinking interactions. A full factorial experimental design with four factors and four levels was applied to optimize the craft of preparing SF-PU composite hydrogels. The molecular weight of PEG, IPDI/(PEG+PPG) (molar ratio), PEG/(PEG+PPG) (molar ratio) and SF/(SF+PU) (mass ratio) were the factors. The swelling behavior of hydrogels was tested in deionized water at 30°C. The results showed that the equilibrium swelling ratio (ESR) was the largest by tuning the molecular weight of PEG to 4000, IPDI/(PEG+PPG)(molar ratio) to 3, PEG/(PEG+PPG) (molar ratio) to 40% and SF/(SF+PU) (mass ratio) to 2%. Fickian diffusion played a dominant role in the initial stage of swelling. For the whole process, the results fitted well into the Schott second-order kinetic equation.
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58
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Koh LD, Cheng Y, Teng CP, Khin YW, Loh XJ, Tee SY, Low M, Ye E, Yu HD, Zhang YW, Han MY. Structures, mechanical properties and applications of silk fibroin materials. Prog Polym Sci 2015. [DOI: 10.1016/j.progpolymsci.2015.02.001] [Citation(s) in RCA: 608] [Impact Index Per Article: 67.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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59
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Ryan CNM, Fuller KP, Larrañaga A, Biggs M, Bayon Y, Sarasua JR, Pandit A, Zeugolis DI. An academic, clinical and industrial update on electrospun, additive manufactured and imprinted medical devices. Expert Rev Med Devices 2015; 12:601-12. [DOI: 10.1586/17434440.2015.1062364] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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60
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Wang D, Liu H, Fan Y. Silk fibroin for vascular regeneration. Microsc Res Tech 2015; 80:280-290. [PMID: 26097014 DOI: 10.1002/jemt.22532] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Revised: 05/18/2015] [Accepted: 05/22/2015] [Indexed: 11/11/2022]
Abstract
Cardiovascular disease is the primary cause of morbidity and mortality in today's world. Due to the lack of healthy autologous vessels, more tissue-engineered blood vessels are needed to repair or replace the damaged arteries. Biomaterials play an indispensable role in creating a living neovessel with biological responses. Silk fibroin produced by silkworms possesses good cytocompatibility, tailorable biodegradability, suitable mechanical properties, and minimal inflammatory reactions. In addition, regenerated silk fibroin solutions can be processed into various forms of scaffolds such as films, fibers, tubes, and porous sponges. These features make silk fibroin a promising biomaterial for small-diameter vascular grafts. The present article focuses on the applications of silk fibroin for vascular regeneration. A brief overview of the properties of silk fibroin is provided, following which the current research status and future directions of the main types of silk fibroin scaffolds for vascular regeneration are reviewed and discussed. Microsc. Res. Tech. 80:280-290, 2017. © 2015 Wiley Periodicals, Inc.
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Affiliation(s)
- Danyan Wang
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100191, People's Republic of China
| | - Haifeng Liu
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100191, People's Republic of China
| | - Yubo Fan
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100191, People's Republic of China.,National Research Center for Rehabilitation Technical Aids, Beijing, 100176, People's Republic of China
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61
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Mwangi TK, Bowles RD, Tainter DM, Bell RD, Kaplan DL, Setton LA. Synthesis and characterization of silk fibroin microparticles for intra-articular drug delivery. Int J Pharm 2015; 485:7-14. [PMID: 25724134 PMCID: PMC4422162 DOI: 10.1016/j.ijpharm.2015.02.059] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Revised: 01/31/2015] [Accepted: 02/23/2015] [Indexed: 01/05/2023]
Abstract
OBJECTIVE To determine the utility of silk fibroin (SF) microparticles as sustained release vehicles for intra-articular delivery. DESIGN SF formulations were varied to generate microparticle drug carriers that were characterized in vitro for their physical properties, release kinetics for a conjugated fluorophore (Cy7), and in vivo for intra-articular retention time using live-animal, fluorescence in vivo imaging. RESULTS SF microparticle carriers were spherical in shape and ranged from 598 nm to 21.5 μm in diameter. SF microparticles provided for sustained release of Cy7 in vitro, with only 10% of the initial load released over 7 days. Upon intra-articular injection in rat knee joints, the SF microparticles were associated with an intra-articular fluorescence decay half-life of 43.3h, greatly increasing the joint residence over that for an equivalent concentration of SF-Cy7 in solution form. The SF microparticles also increase the localization of dye within the joint cavity as determined by image analysis of fluorescent gradients, significantly reducing distribution of the Cy7 to neighboring tissue as compared to SF-Cy7 in free solution. CONCLUSION Silk microparticles act to provide for localized and sustained delivery of loaded small molecules following intra-articular injection, and may be an attractive strategy for delivering small molecule drugs for the treatment of arthritis.
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Affiliation(s)
| | | | - David M. Tainter
- Department of Orthopaedic Surgery, Duke University Medical Center, Durham,
NC
| | - Richard D. Bell
- Department of Orthopaedic Surgery, Duke University Medical Center, Durham,
NC
| | - David L. Kaplan
- Dept of Biomedical Engineering, Tufts University, Medford, MA
| | - Lori A. Setton
- Dept of Biomedical Engineering, Duke University, Durham, NC
- Department of Orthopaedic Surgery, Duke University Medical Center, Durham,
NC
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62
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Wang J, Zhang S, Xing T, Kundu B, Li M, Kundu SC, Lu S. Ion-induced fabrication of silk fibroin nanoparticles from Chinese oak tasar Antheraea pernyi. Int J Biol Macromol 2015; 79:316-25. [PMID: 25936281 DOI: 10.1016/j.ijbiomac.2015.04.052] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2015] [Revised: 04/12/2015] [Accepted: 04/23/2015] [Indexed: 11/19/2022]
Abstract
Silk protein fibroin in nanoparticles form is a promising material for drug delivery due to its pleiotropic properties, including biocompatibility, biodegradability, ease in fabrication into smaller diameters, high bioavailability, and therapeutic retention at target sites. In the present study, silk nanoparticles are fabricated from regenerated fibroin solution of the Chinese temperate oak tasar Antheraea pernyi by novel ion-induced self-assembly in a very short time under mild conditions. The resultant fibroin nanoparticles range in size from 100 to 500 nm. The molecular conformation of regenerated fibroin changes from α-helical to a β-sheet structure as a rapid function of the ionic strength and the hydrophobic and electrostatic interactions. The mild conditions are potentially advantageous for the encapsulation of sensitive drugs and therapeutic molecules such as doxorubicin hydrochloride, an amphiphilic anticancer therapeutic. In vitro release of doxorubicin from nanoparticles is pH sensitive, with approx. 65% doxorubicin remaining in the fibroin nanoparticles after 11 days. The activity of fibroin nanoparticles on hepatomas indicates the efficacy of the fibroin nanoparticles to maintain the bioactivity of the loaded doxorubicin and impart a dose-dependent cell growth inhibition. The results suggest that Chinese temperate oak tasar silk fibroin nanoparticles can be used as a sustained drug delivery vehicle.
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Affiliation(s)
- Juan Wang
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, People's Republic of China
| | - Shanshan Zhang
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, People's Republic of China
| | - Tieling Xing
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, People's Republic of China
| | - Banani Kundu
- Department of Biotechnology, Indian Institute of Technology Kharagpur, West Bengal 721302, India
| | - Mingzhong Li
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, People's Republic of China
| | - Subhas C Kundu
- Department of Biotechnology, Indian Institute of Technology Kharagpur, West Bengal 721302, India
| | - Shenzhou Lu
- National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, People's Republic of China.
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63
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Wolf MT, Dearth CL, Sonnenberg SB, Loboa EG, Badylak SF. Naturally derived and synthetic scaffolds for skeletal muscle reconstruction. Adv Drug Deliv Rev 2015; 84:208-21. [PMID: 25174309 DOI: 10.1016/j.addr.2014.08.011] [Citation(s) in RCA: 130] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2014] [Revised: 07/22/2014] [Accepted: 08/20/2014] [Indexed: 12/15/2022]
Abstract
Skeletal muscle tissue has an inherent capacity for regeneration following injury. However, severe trauma, such as volumetric muscle loss, overwhelms these natural muscle repair mechanisms prompting the search for a tissue engineering/regenerative medicine approach to promote functional skeletal muscle restoration. A desirable approach involves a bioscaffold that simultaneously acts as an inductive microenvironment and as a cell/drug delivery vehicle to encourage muscle ingrowth. Both biologically active, naturally derived materials (such as extracellular matrix) and carefully engineered synthetic polymers have been developed to provide such a muscle regenerative environment. Next generation naturally derived/synthetic "hybrid materials" would combine the advantageous properties of these materials to create an optimal platform for cell/drug delivery and possess inherent bioactive properties. Advances in scaffolds using muscle tissue engineering are reviewed herein.
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Affiliation(s)
- Matthew T Wolf
- McGowan Institute for Regenerative Medicine, Pittsburgh, PA 15219, USA; Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Christopher L Dearth
- McGowan Institute for Regenerative Medicine, Pittsburgh, PA 15219, USA; Department of Surgery, University of Pittsburgh, Pittsburgh, PA 15219, USA
| | - Sonya B Sonnenberg
- Joint Department of Biomedical Engineering at University of North Carolina at Chapel Hill and North Carolina State University, Raleigh, NC 27695, USA
| | - Elizabeth G Loboa
- Joint Department of Biomedical Engineering at University of North Carolina at Chapel Hill and North Carolina State University, Raleigh, NC 27695, USA; Department of Materials Science & Engineering, North Carolina State University, Raleigh, NC 27695, USA
| | - Stephen F Badylak
- McGowan Institute for Regenerative Medicine, Pittsburgh, PA 15219, USA; Department of Surgery, University of Pittsburgh, Pittsburgh, PA 15219, USA; Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA 15213, USA.
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64
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Mechano growth factor (MGF) and transforming growth factor (TGF)-β3 functionalized silk scaffolds enhance articular hyaline cartilage regeneration in rabbit model. Biomaterials 2015; 52:463-75. [PMID: 25818452 DOI: 10.1016/j.biomaterials.2015.01.001] [Citation(s) in RCA: 96] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2014] [Revised: 12/24/2014] [Accepted: 01/06/2015] [Indexed: 12/14/2022]
Abstract
Damaged cartilage has poor self-healing ability and usually progresses to scar or fibrocartilaginous tissue, and finally degenerates to osteoarthritis (OA). Here we demonstrated that one of alternative isoforms of IGF-1, mechano growth factor (MGF) acted synergistically with transforming growth factor β3 (TGF-β3) embedded in silk fibroin scaffolds to induce chemotactic homing and chondrogenic differentiation of mesenchymal stem cells (MSCs). Combination of MGF and TGF-β3 significantly increased cell recruitment up to 1.8 times and 2 times higher than TGF-β3 did in vitro and in vivo. Moreover, MGF increased Collagen II and aggrecan secretion of TGF-β3 induced hMSCs chondrogenesis, but decreased Collagen I in vitro. Silk fibroin (SF) scaffolds have been widely used for tissue engineering, and we showed that methanol treated pured SF scaffolds were porous, similar to compressive module of native cartilage, slow degradation rate and excellent drug released curves. At 7 days after subcutaneous implantation, TGF-β3 and MGF functionalized silk fibroin scaffolds (STM) recruited more CD29+/CD44+cells (P<0.05). Similarly, more cartilage-like extracellular matrix and less fibrillar collagen were detected in STM scaffolds than that in TGF-β3 modified scaffolds (ST) at 2 months after subcutaneous implantation. When implanted into articular joints in a rabbit osteochondral defect model, STM scaffolds showed the best integration into host tissues, similar architecture and collagen organization to native hyaline cartilage, as evidenced by immunostaining of aggrecan, collagen II and collagen I, as well as Safranin O and Masson's trichrome staining, and histological evalution based on the modified O'Driscoll histological scoring system (P<0.05), indicating that MGF and TGF-β3 might be a better candidate for cartilage regeneration. This study demonstrated that TGF-β3 and MGF functionalized silk fibroin scaffolds enhanced endogenous stem cell recruitment and facilitated in situ articular cartilage regeneration, thus providing a novel strategy for cartilage repair.
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65
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Musson DS, Naot D, Chhana A, Matthews BG, McIntosh JD, Lin STC, Choi AJ, Callon KE, Dunbar PR, Lesage S, Coleman B, Cornish J. In vitro evaluation of a novel non-mulberry silk scaffold for use in tendon regeneration. Tissue Eng Part A 2015; 21:1539-51. [PMID: 25604072 DOI: 10.1089/ten.tea.2014.0128] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Tearing of the rotator cuff tendon in the shoulder is a significant clinical problem, with large/full-thickness tears present in ∼22% of the general population and recurrent tear rates postarthroscopic repair being quoted as high as 94%. Tissue-engineered biomaterials are increasingly being investigated as a means to augment rotator cuff repairs, with the aim of inducing host cell responses to increase tendon tissue regeneration. Silk-derived materials are of particular interest due to the high availability, mechanical strength, and biocompatibility of silks. In this study, Spidrex(®), a novel knitted, non-mulberry silk fibroin scaffold was evaluated in vitro for its potential to improve tendon regeneration. Spidrex was compared with a knitted Bombyx mori silk scaffold, a 3D collagen gel and Fiberwire(®) suture material. Primary human and rat tenocytes successfully adhered to Spidrex and significantly increased in number over a 14 day period (p<0.05), as demonstrated by fluorescent calcein-AM staining and alamarBlue(®) assays. A similar growth pattern was observed with human tenocytes cultured on the B. mori scaffold. Morphologically, human tenocytes elongated along the silk fibers of Spidrex, assuming a tenocytic cell shape, and were less circular with a higher aspect ratio compared with human tenocytes cultured on the B. mori silk scaffold and within the collagen gel (p<0.05). Gene expression analysis by real-time PCR showed that rat tenocytes cultured on Spidrex had increased expression of tenocyte-related genes such as fibromodullin, scleraxis, and tenomodulin (p<0.05). Expression of genes that indicate transdifferentiation toward a chondrocytic or osteoblastic lineage were significantly lower in tenocytes cultured on Spidrex in comparison to the collagen gel (p<0.05). Immunogenicity assessment by the maturation of and cytokine release from primary human dendritic cells demonstrated that Spidrex enhanced dendritic cell maturation in a similar manner to the clinically used suture material Fiberwire, and significantly upregulated the release of proinflammatory cytokines (p<0.05). This suggests that Spidrex may induce an early immune response postimplantation. While further work is required to determine what effect this immune response has on the tendon healing process, our in vitro data suggests that Spidrex may have the cytocompatibility and bioactivity required to support tendon regeneration in vivo.
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Affiliation(s)
- David S Musson
- 1 Department of Medicine, The University of Auckland , Auckland, New Zealand
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66
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Buccal mucosa repair with electrospun silk fibroin matrix in a rat model. Int J Artif Organs 2015; 38:105-12. [PMID: 25744194 DOI: 10.5301/ijao.5000392] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/18/2015] [Indexed: 01/06/2023]
Abstract
INTRODUCTION Biomimic electrospun matrix derived from silk fibroin nanofiber solution was recently prepared in our group. The feasibility of the matrix as mucosa repair scaffold was evaluated in a rat model in the present study. METHODS Full thickness wound was established on the buccal mucosa of male Wister rats via microscopic oral surgery. 80 rats were randomly assigned into 4 groups: (1) silk fibroin matrix, (2) commercial cowhide acellular dermal matrix (Heal-All), (3) commercial acellular dermal matrix of human skin (RENOV), and (4) vaseline gauze, respectively. RESULTS The silk fibroin matrix showed similar repair performance compared to the commercial acellular dermal matrices, implying promising applications in mucosa regeneration. More importantly, the silk fibroin matrix showed better wound healing ability, improved wound shrinkage inhibition, and reduced local immunological incompatibility. CONCLUSIONS The silk fibroin scaffold performed satisfied in scar tissue inhibition and epidermis regeneration. Taking into account its improved mechanical properties, the biomimic electrospun silk matrix could become a promising substitute of acellular dermal matrix in clinical applications.
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67
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Schultz I, Vollmers F, Lühmann T, Rybak JC, Wittmann R, Stank K, Steckel H, Kardziev B, Schmidt M, Högger P, Meinel L. Pulmonary Insulin-like Growth Factor I Delivery from Trehalose and Silk-Fibroin Microparticles. ACS Biomater Sci Eng 2015. [DOI: 10.1021/ab500101c] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Isabel Schultz
- Institute
for Pharmacy and Food Chemistry, University of Wuerzburg, Am Hubland, DE-97074 Wuerzburg, Germany
| | - Frederic Vollmers
- Institute
for Pharmacy and Food Chemistry, University of Wuerzburg, Am Hubland, DE-97074 Wuerzburg, Germany
| | - Tessa Lühmann
- Institute
for Pharmacy and Food Chemistry, University of Wuerzburg, Am Hubland, DE-97074 Wuerzburg, Germany
| | - Jens-Christoph Rybak
- Institute
for Pharmacy and Food Chemistry, University of Wuerzburg, Am Hubland, DE-97074 Wuerzburg, Germany
| | - Ronja Wittmann
- Institute
for Pharmacy, University of Kiel, Grasweg 9a, DE-24118 Kiel, Germany
| | - Katharina Stank
- Institute
for Pharmacy, University of Kiel, Grasweg 9a, DE-24118 Kiel, Germany
| | - Hartwig Steckel
- Institute
for Pharmacy, University of Kiel, Grasweg 9a, DE-24118 Kiel, Germany
| | | | - Michael Schmidt
- Medical
Clinic and Polyclinic I, University of Wuerzburg, DE-97080, Germany
| | - Petra Högger
- Institute
for Pharmacy and Food Chemistry, University of Wuerzburg, Am Hubland, DE-97074 Wuerzburg, Germany
| | - Lorenz Meinel
- Institute
for Pharmacy and Food Chemistry, University of Wuerzburg, Am Hubland, DE-97074 Wuerzburg, Germany
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68
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Yodmuang S, McNamara SL, Nover AB, Mandal BB, Agarwal M, Kelly TAN, Chao PHG, Hung C, Kaplan DL, Vunjak-Novakovic G. Silk microfiber-reinforced silk hydrogel composites for functional cartilage tissue repair. Acta Biomater 2015; 11:27-36. [PMID: 25281788 DOI: 10.1016/j.actbio.2014.09.032] [Citation(s) in RCA: 152] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2014] [Revised: 08/21/2014] [Accepted: 09/18/2014] [Indexed: 01/20/2023]
Abstract
Cartilage tissue lacks an intrinsic capacity for self-regeneration due to slow matrix turnover, a limited supply of mature chondrocytes and insufficient vasculature. Although cartilage tissue engineering has achieved some success using agarose as a scaffolding material, major challenges of agarose-based cartilage repair, including non-degradability, poor tissue-scaffold integration and limited processing capability, have prompted the search for an alternative biomaterial. In this study, silk fiber-hydrogel composites (SF-silk hydrogels) made from silk microfibers and silk hydrogels were investigated for their potential use as a support material for engineered cartilage. We demonstrated the use of 100% silk-based fiber-hydrogel composite scaffolds for the development of cartilage constructs with properties comparable to those made with agarose. Cartilage constructs with an equilibrium modulus in the native tissue range were fabricated by mimicking the collagen fiber and proteoglycan composite architecture of native cartilage using biocompatible, biodegradable silk fibroin from Bombyx mori. Excellent chondrocyte response was observed on SF-silk hydrogels, and fiber reinforcement resulted in the development of more mechanically robust constructs after 42 days in culture compared to silk hydrogels alone. Thus, we demonstrate the versatility of silk fibroin as a composite scaffolding material for use in cartilage tissue repair to create functional cartilage constructs that overcome the limitations of agarose biomaterials, and provide a much-needed alternative to the agarose standard.
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Affiliation(s)
- Supansa Yodmuang
- Department of Biomedical Engineering, Columbia University, New York, NY, USA
| | | | - Adam B Nover
- Department of Biomedical Engineering, Columbia University, New York, NY, USA
| | - Biman B Mandal
- Department of Biotechnology, Indian Institute of Technology, Guwahati 781039, India
| | - Monica Agarwal
- Department of Biomedical Engineering, Columbia University, New York, NY, USA
| | - Terri-Ann N Kelly
- Department of Biomedical Engineering, Tufts University, Medford, MA, USA
| | - Pen-hsiu Grace Chao
- Institute of Biomedical Engineering, School of Engineering and School of Medicine, National Taiwan University, Taipei, Taiwan
| | - Clark Hung
- Department of Biomedical Engineering, Columbia University, New York, NY, USA
| | - David L Kaplan
- Department of Biomedical Engineering, Tufts University, Medford, MA, USA
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Elsner MB, Herold HM, Müller-Herrmann S, Bargel H, Scheibel T. Enhanced cellular uptake of engineered spider silk particles. Biomater Sci 2015. [DOI: 10.1039/c4bm00401a] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Drug delivery systems allow tissue/cell specific targeting of drugs in order to reduce total drug amounts administered to an organism and potential side effects upon systemic drug delivery.
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Affiliation(s)
- Martina B. Elsner
- Lehrstuhl Biomaterialien
- Universitätsstraße 30
- Universität Bayreuth
- Bayreuth D-95447
- Germany
| | - Heike M. Herold
- Lehrstuhl Biomaterialien
- Universitätsstraße 30
- Universität Bayreuth
- Bayreuth D-95447
- Germany
| | | | - Hendrik Bargel
- Lehrstuhl Biomaterialien
- Universitätsstraße 30
- Universität Bayreuth
- Bayreuth D-95447
- Germany
| | - Thomas Scheibel
- Lehrstuhl Biomaterialien
- Universitätsstraße 30
- Universität Bayreuth
- Bayreuth D-95447
- Germany
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Clinical application of a silk fibroin protein biologic scaffold for abdominal wall fascial reinforcement. PLASTIC AND RECONSTRUCTIVE SURGERY-GLOBAL OPEN 2014; 2:e246. [PMID: 25506529 PMCID: PMC4255889 DOI: 10.1097/gox.0000000000000217] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2014] [Accepted: 09/16/2014] [Indexed: 12/03/2022]
Abstract
Background: Preclinical studies have demonstrated that macroporous silk fibroin protein scaffolds are capable of promoting physiologically durable supportive tissue, which favors application of these engineered tissues for clinical implantation. The safety and effectiveness of a long-lasting, transitory, 510(k)-cleared purified silk fibroin biologic scaffold (SBS) are investigated for soft-tissue support and repair of the abdominal wall. Methods: We conducted a multicenter retrospective review of all consecutive patients who underwent abdominal wall soft-tissue reinforcement with an SBS device between 2011 and 2013. Indications, comorbid conditions, surgical technique, complications, and outcomes were evaluated. Results: We reviewed the records of 172 consecutive patients who received an SBS for soft-tissue support. Of those, 77 patients underwent abdominal wall fascial repair, with a mean follow-up of 18.4 ± 7.5 months. Procedures using an SBS included reinforcement of an abdominal-based flap donor site (31.2%), ventral hernia repair (53.2%), and abdominoplasty (15.6%). The overall complication rate was 6.5%, consisting of 2 wound dehiscences, 1 with device exposure, 1 seroma, 1 infection with explantation, and a perioperative bulge requiring reoperation. There were no reports of hernia. Conclusions: Postoperative complication rates after 18 months were low, and most surgical complications were managed nonoperatively on an outpatient basis without mesh removal. To our knowledge, this is the only series to report on a long-lasting, transitory SBS for abdominal wall repair and reinforcement. Procedure-specific outcome studies are warranted to delineate optimal patient selection and define potential device characteristic advantages.
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71
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Silk fibroin rods for sustained delivery of breast cancer therapeutics. Biomaterials 2014; 35:8613-20. [DOI: 10.1016/j.biomaterials.2014.06.030] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2014] [Accepted: 06/15/2014] [Indexed: 01/06/2023]
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Yucel T, Lovett ML, Kaplan DL. Silk-based biomaterials for sustained drug delivery. J Control Release 2014; 190:381-97. [PMID: 24910193 PMCID: PMC4142080 DOI: 10.1016/j.jconrel.2014.05.059] [Citation(s) in RCA: 212] [Impact Index Per Article: 21.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Revised: 05/24/2014] [Accepted: 05/28/2014] [Indexed: 10/25/2022]
Abstract
Silk presents a rare combination of desirable properties for sustained drug delivery, including aqueous-based purification and processing options without chemical cross-linkers, compatibility with common sterilization methods, controllable and surface-mediated biodegradation into non-inflammatory by-products, biocompatibility, utility in drug stabilization, and robust mechanical properties. A versatile silk-based toolkit is currently available for sustained drug delivery formulations of small molecule through macromolecular drugs, with a promise to mitigate several drawbacks associated with other degradable sustained delivery technologies in the market. Silk-based formulations utilize silk's well-defined nano- through microscale structural hierarchy, stimuli-responsive self-assembly pathways and crystal polymorphism, as well as sequence and genetic modification options towards targeted pharmaceutical outcomes. Furthermore, by manipulating the interactions between silk and drug molecules, near-zero order sustained release may be achieved through diffusion- and degradation-based release mechanisms. Because of these desirable properties, there has been increasing industrial interest in silk-based drug delivery systems currently at various stages of the developmental pipeline from pre-clinical to FDA-approved products. Here, we discuss the unique aspects of silk technology as a sustained drug delivery platform and highlight the current state of the art in silk-based drug delivery. We also offer a potential early development pathway for silk-based sustained delivery products.
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Affiliation(s)
- Tuna Yucel
- Tufts University, Department of Biomedical Engineering, Medford, MA 02155, USA; Ekteino Laboratories, New York, NY 10022, USA
| | - Michael L Lovett
- Tufts University, Department of Biomedical Engineering, Medford, MA 02155, USA; Ekteino Laboratories, New York, NY 10022, USA
| | - David L Kaplan
- Tufts University, Department of Biomedical Engineering, Medford, MA 02155, USA
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73
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Price R, Poursaid A, Ghandehari H. Controlled release from recombinant polymers. J Control Release 2014; 190:304-13. [PMID: 24956486 PMCID: PMC4142100 DOI: 10.1016/j.jconrel.2014.06.016] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2014] [Revised: 06/10/2014] [Accepted: 06/13/2014] [Indexed: 12/13/2022]
Abstract
Recombinant polymers provide a high degree of molecular definition for correlating structure with function in controlled release. The wide array of amino acids available as building blocks for these materials lend many advantages including biorecognition, biodegradability, potential biocompatibility, and control over mechanical properties among other attributes. Genetic engineering and DNA manipulation techniques enable the optimization of structure for precise control over spatial and temporal release. Unlike the majority of chemical synthetic strategies used, recombinant DNA technology has allowed for the production of monodisperse polymers with specifically defined sequences. Several classes of recombinant polymers have been used for controlled drug delivery. These include, but are not limited to, elastin-like, silk-like, and silk-elastinlike proteins, as well as emerging cationic polymers for gene delivery. In this article, progress and prospects of recombinant polymers used in controlled release will be reviewed.
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Affiliation(s)
- Robert Price
- Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, Salt Lake City, UT, USA; Utah Center for Nanomedicine, Nano Institute of Utah, University of Utah, Salt Lake City, UT, USA
| | - Azadeh Poursaid
- Utah Center for Nanomedicine, Nano Institute of Utah, University of Utah, Salt Lake City, UT, USA; Department of Bioengineering, University of Utah, Salt Lake City, UT, USA
| | - Hamidreza Ghandehari
- Department of Pharmaceutics and Pharmaceutical Chemistry, University of Utah, Salt Lake City, UT, USA; Utah Center for Nanomedicine, Nano Institute of Utah, University of Utah, Salt Lake City, UT, USA; Department of Bioengineering, University of Utah, Salt Lake City, UT, USA.
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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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Raftery R, O’Brien FJ, Cryan SA. Chitosan for gene delivery and orthopedic tissue engineering applications. Molecules 2013; 18:5611-47. [PMID: 23676471 PMCID: PMC6270408 DOI: 10.3390/molecules18055611] [Citation(s) in RCA: 92] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2013] [Revised: 05/02/2013] [Accepted: 05/06/2013] [Indexed: 01/24/2023] Open
Abstract
Gene therapy involves the introduction of foreign genetic material into cells in order exert a therapeutic effect. The application of gene therapy to the field of orthopaedic tissue engineering is extremely promising as the controlled release of therapeutic proteins such as bone morphogenetic proteins have been shown to stimulate bone repair. However, there are a number of drawbacks associated with viral and synthetic non-viral gene delivery approaches. One natural polymer which has generated interest as a gene delivery vector is chitosan. Chitosan is biodegradable, biocompatible and non-toxic. Much of the appeal of chitosan is due to the presence of primary amine groups in its repeating units which become protonated in acidic conditions. This property makes it a promising candidate for non-viral gene delivery. Chitosan-based vectors have been shown to transfect a number of cell types including human embryonic kidney cells (HEK293) and human cervical cancer cells (HeLa). Aside from its use in gene delivery, chitosan possesses a range of properties that show promise in tissue engineering applications; it is biodegradable, biocompatible, has anti-bacterial activity, and, its cationic nature allows for electrostatic interaction with glycosaminoglycans and other proteoglycans. It can be used to make nano- and microparticles, sponges, gels, membranes and porous scaffolds. Chitosan has also been shown to enhance mineral deposition during osteogenic differentiation of MSCs in vitro. The purpose of this review is to critically discuss the use of chitosan as a gene delivery vector with emphasis on its application in orthopedic tissue engineering.
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Affiliation(s)
- Rosanne Raftery
- Tissue Engineering Research Group, Department of Anatomy, Royal College of Surgeons in Ireland, Dublin 2, Ireland
- School of Pharmacy, Royal College of Surgeons in Ireland, Dublin 2, Ireland
| | - Fergal J. O’Brien
- Tissue Engineering Research Group, Department of Anatomy, Royal College of Surgeons in Ireland, Dublin 2, Ireland
- Trinity Centre for Bioengineering, Trinity College Dublin, Dublin 2, Ireland
| | - Sally-Ann Cryan
- Tissue Engineering Research Group, Department of Anatomy, Royal College of Surgeons in Ireland, Dublin 2, Ireland
- School of Pharmacy, Royal College of Surgeons in Ireland, Dublin 2, Ireland
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78
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Kundu B, Rajkhowa R, Kundu SC, Wang X. Silk fibroin biomaterials for tissue regenerations. Adv Drug Deliv Rev 2013; 65:457-70. [PMID: 23137786 DOI: 10.1016/j.addr.2012.09.043] [Citation(s) in RCA: 764] [Impact Index Per Article: 69.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2012] [Revised: 08/26/2012] [Accepted: 09/25/2012] [Indexed: 12/31/2022]
Abstract
Regeneration of tissues using cells, scaffolds and appropriate growth factors is a key approach in the treatments of tissue or organ failure. Silk protein fibroin can be effectively used as a scaffolding material in these treatments. Silk fibers are obtained from diverse sources such as spiders, silkworms, scorpions, mites and flies. Among them, silk of silkworms is a good source for the development of biomedical device. It possesses good biocompatibility, suitable mechanical properties and is produced in bulk in the textile sector. The unique combination of elasticity and strength along with mammalian cell compatibility makes silk fibroin an attractive material for tissue engineering. The present article discusses the processing of silk fibroin into different forms of biomaterials followed by their uses in regeneration of different tissues. Applications of silk for engineering of bone, vascular, neural, skin, cartilage, ligaments, tendons, cardiac, ocular, and bladder tissues are discussed. The advantages and limitations of silk systems as scaffolding materials in the context of biocompatibility, biodegradability and tissue specific requirements are also critically reviewed.
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Affiliation(s)
- Banani Kundu
- Department of Biotechnology, Indian Institute of Technology Kharagpur, Kharagpur-721302, India
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