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Wan X, Yao H, Wei Z, Gao D, Zheng D, Xu B, Xie M. Heterogeneous porous hypoxia-mimicking scaffolds propel urethral reconstruction by promoting angiogenesis and regulating inflammation. Biomaterials 2024; 314:122833. [PMID: 39277947 DOI: 10.1016/j.biomaterials.2024.122833] [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: 04/21/2024] [Revised: 09/08/2024] [Accepted: 09/10/2024] [Indexed: 09/17/2024]
Abstract
The nasty urine microenvironment (UME) impedes neourethral regeneration by inhibiting angiogenesis and inducing an excessive inflammatory response. Cellular adaptation to hypoxia improves regeneration in numerous tissues. In this study, heterogeneous porous hypoxia-mimicking scaffolds were fabricated for urethral reconstruction via promoting angiogenesis and modulating the inflammatory response based on sustained release of dimethyloxalylglycine (DMOG) to promote HIF-1α stabilization. Such scaffolds exhibit a two-layered structure: a dense layer composed of electrospun poly (l-lactic acid) (PLLA) nanofibrous mats and a loose layer composed of a porous gelatin matrix incorporated with DMOG-loaded mesoporous silica nanoparticles (DMSNs) and coated with poly(glycerol sebacate) (PGS). The modification of PGS could significantly increase rupture elongation, making the composite scaffolds more suitable for urethral tissue regeneration. Additionally, sustained release of DMOG from the scaffold facilitates proliferation, migration, tube formation, and angiogenetic gene expression in human umbilical vein endothelial cells (HUVECs), as well as stimulates M2 macrophage polarization and its regulation of HUVECs migration and smooth muscle cell (SMCs) contractile phenotype. These effects were downstream of the stabilization of HIF-1α in HUVECs and macrophages under hypoxia-mimicking conditions. Furthermore, the scaffold achieved better urethral reconstruction in a rabbit urethral stricture model, including an unobstructed urethra with a larger urethral diameter, increased regeneration of urothelial cells, SMCs, and neovascularization. Our results indicate that heterogeneous porous hypoxia-mimicking scaffolds could promote urethral reconstruction via facilitating angiogenesis and modulating inflammatory response.
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Affiliation(s)
- Xiang Wan
- Department of Urology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - Haijun Yao
- Department of Urology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - Ziwei Wei
- Department of Urology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - Dajun Gao
- Department of Urology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - Dachao Zheng
- Department of Urology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China.
| | - Bin Xu
- Department of Urology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China.
| | - Minkai Xie
- Department of Urology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China.
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2
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Roldán E, Reeves ND, Cooper G, Andrews K. Machine learning to predict morphology, topography and mechanical properties of sustainable gelatin-based electrospun scaffolds. Sci Rep 2024; 14:21017. [PMID: 39251653 PMCID: PMC11385233 DOI: 10.1038/s41598-024-71824-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Accepted: 08/30/2024] [Indexed: 09/11/2024] Open
Abstract
Electrospinning is an outstanding manufacturing technique for producing nano-micro-scaled fibrous scaffolds comparable to biological tissues. However, the solvents used are normally hazardous for the health and the environment, which compromises the sustainability of the process and the industrial scaling. This novel study compares different machine learning models to predict how green solvents affect the morphology, topography and mechanical properties of gelatin-based scaffolds. Gelatin-based scaffolds were produced with different concentrations of distillate water (dH2O), acetic acid (HAc) and dimethyl sulfoxide (DMSO). 2214 observations, 12 machine learning approaches, including Generalised Linear Models, Generalised Additive Models, Generalised Additive Models for Location, Scale and Shape (GAMLSS), Decision Trees, Random Forest, Support Vector Machine and Artificial Neural Network, and a total of 72 models were developed to predict diameter of the fibres, inter-fibre separation, roughness, ultimate tensile strength, Young's modulus and strain at break. The best GAMLSS models improved the performance of R2 with respect to the popular regression models by 6.868%, and the MAPE was improved by 21.16%. HAc highly influenced the morphology and topography; however, the importance of DMSO was higher in the mechanical properties. The addition of the morphological properties as covariates in the topographic and mechanical models enhanced their understanding.
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Affiliation(s)
- Elisa Roldán
- Department of Engineering, Faculty of Science & Engineering, Manchester Metropolitan University, Manchester, M1 5GD, UK.
| | - Neil D Reeves
- Lancaster Medical School, Faculty of Health and Medicine, Lancaster University, Lancaster, LA1 4YW, UK
| | - Glen Cooper
- School of Engineering, University of Manchester, Manchester, M13 9PL, UK
| | - Kirstie Andrews
- Department of Engineering, Faculty of Science & Engineering, Manchester Metropolitan University, Manchester, M1 5GD, UK
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3
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Mukta NA, Ahmed S, Chowdhury AMS, Khan MN, Hossain MS, Chowdhury GW, Haque P. PLA blended gelatine-based nanofibrous mats with enhanced hydrophobicity for soft tissue regeneration. J Med Eng Technol 2024:1-13. [PMID: 39018330 DOI: 10.1080/03091902.2024.2379840] [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: 06/19/2023] [Accepted: 06/22/2024] [Indexed: 07/19/2024]
Abstract
Wound healing requires a substantial amount of moisture for faster recovery. Completely hydrophobic or hydrophilic biomaterials are not suitable to be applied for cell growth in wounded areas. The study aimed to prepare a nanofibrous scaffold from the blend of a solution of hydrophobic PLA and a solution of hydrophilic gelatine. The stability of the blend was achieved using a surfactant and an electrospun nanofibrous scaffold was made out of the solution. The optimum composition of gelatine and PLA to make a scaffold of uniform fibre diameter was achieved with the help of conductivity, viscosity and FESEM analysis. The optimum scaffold was characterised by TGA, DSC and XRD analysis. The water contact angle of the optimum sample was observed at 27°. The blended scaffold was found non-toxic to cells and showed a 30% faster healing of wounds in the rat model test compared to the healing rate of the PLA scaffold or the gelatine scaffold alone. The histological assay also supported the blend scaffold as an encouraging material for tissue regeneration.
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Affiliation(s)
- Nasima Akter Mukta
- Daffodil International University, Dhaka, Bangladesh
- Department of Applied Chemistry and Chemical Engineering, University of Dhaka, Bangladesh
| | | | | | - M Nuruzzaman Khan
- Department of Applied Chemistry and Chemical Engineering, University of Dhaka, Bangladesh
| | | | | | - Papia Haque
- Department of Applied Chemistry and Chemical Engineering, University of Dhaka, Bangladesh
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4
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Bjorgvinsdottir O, Ferguson SJ, Snorradottir BS, Gudjonsson T, Wuertz-Kozak K. The influence of physical and spatial substrate characteristics on endothelial cells. Mater Today Bio 2024; 26:101060. [PMID: 38711934 PMCID: PMC11070711 DOI: 10.1016/j.mtbio.2024.101060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Revised: 03/10/2024] [Accepted: 04/13/2024] [Indexed: 05/08/2024] Open
Abstract
Cardiovascular diseases are a main cause of death worldwide, leading to a growing demand for medical devices to treat this patient group. Central to the engineering of such devices is a good understanding of the biology and physics of cell-surface interactions. In existing blood-contacting devices, such as vascular grafts, the interaction between blood, cells, and material is one of the main limiting factors for their long-term durability. An improved understanding of the material's chemical- and physical properties as well as its structure all play a role in how endothelial cells interact with the material surface. This review provides an overview of how different surface structures influence endothelial cell responses and what is currently known about the underlying mechanisms that guide this behavior. The structures reviewed include decellularized matrices, electrospun fibers, pillars, pits, and grated surfaces.
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Affiliation(s)
- Oddny Bjorgvinsdottir
- Faculty of Pharmaceutical Sciences, University of Iceland, Hofsvallagata 53, 107 Reykjavik, Iceland
| | - Stephen J. Ferguson
- Institute for Biomechanics, ETH Zurich, Gloriastrasse 37 / 39, 8092, Zurich, Switzerland
| | | | - Thorarinn Gudjonsson
- Faculty of Medicine, University of Iceland, Vatnsmyrarvegur 16, 101 Reykjavik, Iceland
| | - Karin Wuertz-Kozak
- Department of Biomedical Engineering, Rochester Institute of Technology (RIT), 160 Lomb Memorial Drive Bldg. 73, Rochester, NY, 14623, USA
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5
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Garg A, Alfatease A, Hani U, Haider N, Akbar MJ, Talath S, Angolkar M, Paramshetti S, Osmani RAM, Gundawar R. Drug eluting protein and polysaccharides-based biofunctionalized fabric textiles- pioneering a new frontier in tissue engineering: An extensive review. Int J Biol Macromol 2024; 268:131605. [PMID: 38641284 DOI: 10.1016/j.ijbiomac.2024.131605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 03/20/2024] [Accepted: 04/12/2024] [Indexed: 04/21/2024]
Abstract
In the ever-evolving landscape of tissue engineering, medicated biotextiles have emerged as a game-changer. These remarkable textiles have garnered significant attention for their ability to craft tissue scaffolds that closely mimic the properties of natural tissues. This comprehensive review delves into the realm of medicated protein and polysaccharide-based biotextiles, exploring a diverse array of fabric materials. We unravel the intricate web of fabrication methods, ranging from weft/warp knitting to plain/stain weaving and braiding, each lending its unique touch to the world of biotextiles creation. Fibre production techniques, such as melt spinning, wet/gel spinning, and multicomponent spinning, are demystified to shed light on the magic behind these ground-breaking textiles. The biotextiles thus crafted exhibit exceptional physical and chemical properties that hold immense promise in the field of tissue engineering (TE). Our review underscores the myriad applications of drug-eluting protein and polysaccharide-based textiles, including TE, tissue repair, regeneration, and wound healing. Additionally, we delve into commercially available products that harness the potential of medicated biotextiles, paving the way for a brighter future in healthcare and regenerative medicine. Step into the world of innovation with medicated biotextiles-where science meets the art of healing.
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Affiliation(s)
- Ankitha Garg
- Department of Pharmaceutics, JSS College of Pharmacy, JSS Academy of Higher Education and Research (JSSAHER), Mysuru 570015, Karnataka, India
| | - Adel Alfatease
- Department of Pharmaceutics, College of Pharmacy, King Khalid University, Abha 61421, Saudi Arabia.
| | - Umme Hani
- Department of Pharmaceutics, College of Pharmacy, King Khalid University, Abha 61421, Saudi Arabia.
| | - Nazima Haider
- Department of Pathology, College of Medicine, King Khalid University, Abha 61421, Saudi Arabia
| | - Mohammad J Akbar
- Department of Pharmaceutics, College of Clinical Pharmacy, Imam Abdulrahman Bin Faisal University, Dammam 34212, Saudi Arabia.
| | - Sirajunisa Talath
- Department of Pharmaceutical Chemistry, RAK College of Pharmacy, RAK Medical and Health Sciences University, Ras Al Khaimah 11172, United Arab Emirates.
| | - Mohit Angolkar
- Department of Pharmaceutics, JSS College of Pharmacy, JSS Academy of Higher Education and Research (JSSAHER), Mysuru 570015, Karnataka, India
| | - Sharanya Paramshetti
- Department of Pharmaceutics, JSS College of Pharmacy, JSS Academy of Higher Education and Research (JSSAHER), Mysuru 570015, Karnataka, India
| | - Riyaz Ali M Osmani
- Department of Pharmaceutics, JSS College of Pharmacy, JSS Academy of Higher Education and Research (JSSAHER), Mysuru 570015, Karnataka, India.
| | - Ravi Gundawar
- Department of Pharmaceutical Quality Assurance, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education (MAHE), Manipal 576104, Karnataka, India.
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6
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Abbas TO, Parangusan H, Yalcin HC, Hassan M, Zakrif L, Zandi N, Pennisi CP. Trilayer composite scaffold for urethral reconstruction: in vitroevaluation of mechanical, biological, and angiogenic properties. Biomed Mater 2024; 19:025022. [PMID: 38194708 DOI: 10.1088/1748-605x/ad1c9c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 01/09/2024] [Indexed: 01/11/2024]
Abstract
Regeneration of damaged urethral tissue remains a major challenge in the field of lower urinary tract reconstruction. To address this issue, various synthetic and natural biodegradable biomaterials are currently being explored for the fabrication of scaffolds that promote urethral regeneration and healing. In this study, we present an approach to fabricate a trilayer hybrid scaffold comprising a central layer of poly(lactic acid) (PLA) between two layers of chitosan. The chitosan/PLA/chitosan (CPC) scaffolds were fabricated by a sequential electrospinning process and their properties were evaluated for their suitability for urethral tissue engineering. The physical and biological properties of the CPC scaffolds were evaluated in comparison to electrospun PLA scaffolds and acellular dermis (Alloderm) as controls for a synthetic and a natural scaffold, respectively. Compared to the controls, the CPC scaffolds exhibited higher elastic modulus and ultimate tensile strength, while maintaining extensibility and suture retention strength appropriate for clinical use. The CPC scaffolds displayed significant hydrophilicity, which was associated with a higher water absorption capacity of the chitosan nanofibres. The degradation products of the CPC scaffolds did not exhibit cytotoxicity and promoted wound closure by fibroblastsin vitro. In addition, CPC scaffolds showed increased growth of smooth muscle cells, an essential component for functional regeneration of urethral tissue. Furthermore, in a chicken embryo-based assay, CPC scaffolds demonstrated significantly higher angiogenic potential, indicating their ability to promote vascularisation, a crucial aspect for successful urethral reconstruction. Overall, these results suggest that CPC hybrid scaffolds containing both natural and synthetic components offer significant advantages over conventional acellular or synthetic materials alone. CPC scaffolds show promise as potential candidates for further research into the reconstruction of the urethrain vivo.
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Affiliation(s)
- Tariq O Abbas
- Regenerative Medicine Group, Department of Health Science and Technology, Aalborg University, Aalborg, Denmark
- Pediatric Surgery Department, Hamad General Hospital, Doha, Qatar
- College of Medicine, Qatar University, Doha, Qatar
- Weill Cornell Medicine-Qatar, Doha, Qatar
- Urology Division, Urology Department, Sidra Medicine, Doha, Qatar
| | | | - Huseyin C Yalcin
- Biomedical Research Centre, Qatar University, Doha, Qatar
- Department of Biomedical Science, College of Health Sciences, QU Health, Qatar University, Doha, Qatar
| | - Mohamed Hassan
- Centre for Advanced Materials, Qatar University, Doha, Qatar
| | - Lubna Zakrif
- Biomedical Research Centre, Qatar University, Doha, Qatar
| | - Nooshin Zandi
- Regenerative Medicine Group, Department of Health Science and Technology, Aalborg University, Aalborg, Denmark
| | - Cristian P Pennisi
- Regenerative Medicine Group, Department of Health Science and Technology, Aalborg University, Aalborg, Denmark
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7
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Cevik M, Dikici S. Development of tissue-engineered vascular grafts from decellularized parsley stems. SOFT MATTER 2024; 20:338-350. [PMID: 38088147 DOI: 10.1039/d3sm01236k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2024]
Abstract
Cardiovascular diseases are mostly associated with narrowing or blockage of blood vessels, and it is the most common cause of death worldwide. The use of vascular grafts is a promising approach to bypass or replace the blocked vessels for long-term treatment. Although autologous arteries or veins are the most preferred tissue sources for vascular bypass, the limited presence and poor quality of autologous vessels necessitate seeking alternative biomaterials. Recently, synthetic grafts have gained attention as an alternative to autologous grafts. However, the high failure rate of synthetic grafts has been reported primarily due to thrombosis, atherosclerosis, intimal hyperplasia, or infection. Thrombosis, the main reason for failure upon implantation, is associated with damage or absence of endothelial cell lining in the vascular graft's luminal surface. To overcome this, tissue-engineered vascular grafts (TEVGs) have come into prominence. Alongside the well-established scaffold manufacturing techniques, decellularized plant-based constructs have recently gained significant importance and are an emerging field in tissue engineering and regenerative medicine. Accordingly, in this study, we demonstrated the fabrication of tubular scaffolds from decellularized parsley stems and recellularized them with human endothelial cells to be used as a potential TEVG. Our results suggested that the native plant DNA was successfully removed, and soft tubular biomaterials were successfully manufactured via the chemical decellularization of the parsley stems. The decellularized parsley stems showed suitable mechanical and biological properties to be used as a TEVG material, and they provided a suitable environment for the culture of human endothelial cells to attach and create a pseudo endothelium prior to implantation. This study is the first one to demonstrate the potential of the parsley stems to be used as a potential TEVG biomaterial.
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Affiliation(s)
- Merve Cevik
- Department of Biotechnology, Graduate School of Education, Izmir Institute of Technology, 35430, Izmir, Turkey
| | - Serkan Dikici
- Department of Bioengineering, Faculty of Engineering, Izmir Institute of Technology, 35430, Izmir, Turkey.
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8
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Roldán E, Reeves ND, Cooper G, Andrews K. Can we achieve biomimetic electrospun scaffolds with gelatin alone? Front Bioeng Biotechnol 2023; 11:1160760. [PMID: 37502104 PMCID: PMC10368888 DOI: 10.3389/fbioe.2023.1160760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Accepted: 07/05/2023] [Indexed: 07/29/2023] Open
Abstract
Introduction: Gelatin is a natural polymer commonly used in biomedical applications in combination with other materials due to its high biocompatibility, biodegradability, and similarity to collagen, principal protein of the extracellular matrix (ECM). The aim of this study was to evaluate the suitability of gelatin as the sole material to manufacture tissue engineering scaffolds by electrospinning. Methods: Gelatin was electrospun in nine different concentrations onto a rotating collector and the resulting scaffold's mechanical properties, morphology and topography were assessed using mechanical testing, scanning electron microscopy and white light interferometry, respectively. After characterizing the scaffolds, the effects of the concentration of the solvents and crosslinking agent were statistically evaluated with multivariate analysis of variance and linear regressions. Results: Fiber diameter and inter-fiber separation increased significantly when the concentration of the solvents, acetic acid (HAc) and dimethyl sulfoxide (DMSO), increased. The roughness of the scaffolds decreased as the concentration of dimethyl sulfoxide increased. The mechanical properties were significantly affected by the DMSO concentration. Immersed crosslinked scaffolds did not degrade until day 28. The manufactured gelatin-based electrospun scaffolds presented comparable mechanical properties to many human tissues such as trabecular bone, gingiva, nasal periosteum, oesophagus and liver tissue. Discussion: This study revealed for the first time that biomimetic electrospun scaffolds with gelatin alone can be produced for a significant number of human tissues by appropriately setting up the levels of factors and their interactions. These findings also extend statistical relationships to a form that would be an excellent starting point for future research that could optimize factors and interactions using both traditional statistics and machine learning techniques to further develop specific human tissue.
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Affiliation(s)
- Elisa Roldán
- Department of Engineering, Faculty of Science and Engineering, Manchester Metropolitan University, Manchester, United Kingdom
| | - Neil D. Reeves
- Research Centre for Musculoskeletal Science and Sports Medicine, Department of Life Sciences, Faculty of Science and Engineering, Manchester Metropolitan University, Manchester, United Kingdom
| | - Glen Cooper
- School of Engineering, University of Manchester, Manchester, United Kingdom
| | - Kirstie Andrews
- Department of Engineering, Faculty of Science and Engineering, Manchester Metropolitan University, Manchester, United Kingdom
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9
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A native sericin wound dressing spun directly from silkworms enhances wound healing. Colloids Surf B Biointerfaces 2023; 225:113228. [PMID: 36889105 DOI: 10.1016/j.colsurfb.2023.113228] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 02/11/2023] [Accepted: 02/25/2023] [Indexed: 03/02/2023]
Abstract
It is attractive and challenging to develop a bioactive dressing based on native nondestructive sericin. Here, a native sericin wound dressing was secreted directly by silkworms bred through regulating their spinning behaviors. To be excited, our first reported wound dressing possesses original unique features of natural sericin, including natural structures and bioactivities. Besides, it has a porous fibrous network structure with a porosity of 75 %, thus achieving excellent air permeability. Moreover, the wound dressing exhibits pH-responsive degradability, softness, and super absorbency properties whose equilibrium water contents are no less than 75 % in various pH conditions. Furthermore, the sericin wound dressing demonstrates high mechanical strength, reaching 2.5 MPa tensile strength. Importantly, we confirmed good cell compatibility of sericin wound dressing that can support cell viability, proliferation, and migration for a long time. When tested in a mouse full-thickness skin wound model, the wound dressing efficiently accelerated the healing process. Our findings suggest that the sericin wound dressing has promising application and commercial value in wound repair.
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10
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Effect of gelatin treatment on tow deformation in resin-impregnated glass fiber. Sci Rep 2022; 12:18949. [PMID: 36347913 PMCID: PMC9643391 DOI: 10.1038/s41598-022-23569-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Accepted: 11/02/2022] [Indexed: 11/11/2022] Open
Abstract
The potential use of gelatin materials in the liquid composite molding manufacturing (LCM) process was investigated, with specific focus on the reinforcement deformation phenomenon. The adoptability of gelatin as a binder in a composite material with glass fiber for application in the LCM process was evaluated by analyzing the permeability and microscopic structure of the gelatin-coated glass fiber. To assess the tow deformation, the permeability of the non-crimped unidirectional glass fiber mat was evaluated at different flow rates that could be applied in the LCM process. Hysteresis of the permeability was observed as the flow rate increased and decreased, indicative of tow deformation. The permeability of the gelatin-treated glass fiber mat exhibited a relatively smaller variation than that of the untreated glass fiber at the same flow rate. Tow deformation in the untreated and gelatin-treated non-crimped glass fiber mats at different flow rates was evaluated by microscopic analysis and quantified using the tow thickness index. Relatively smaller variations in the permeability and minimal changes in the tow thickness of the gelatin-treated glass fiber mat were observed via microscopic analysis, indicating that gelatin effectively maintained the binding structure of the glass fiber mat.
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11
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Moya-Lopez C, González-Fuentes J, Bravo I, Chapron D, Bourson P, Alonso-Moreno C, Hermida-Merino D. Polylactide Perspectives in Biomedicine: From Novel Synthesis to the Application Performance. Pharmaceutics 2022; 14:1673. [PMID: 36015299 PMCID: PMC9415503 DOI: 10.3390/pharmaceutics14081673] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 07/26/2022] [Accepted: 07/28/2022] [Indexed: 11/24/2022] Open
Abstract
The incessant developments in the pharmaceutical and biomedical fields, particularly, customised solutions for specific diseases with targeted therapeutic treatments, require the design of multicomponent materials with multifunctional capabilities. Biodegradable polymers offer a variety of tailored physicochemical properties minimising health adverse side effects at a low price and weight, which are ideal to design matrices for hybrid materials. PLAs emerge as an ideal candidate to develop novel materials as are endowed withcombined ambivalent performance parameters. The state-of-the-art of use of PLA-based materials aimed at pharmaceutical and biomedical applications is reviewed, with an emphasis on the correlation between the synthesis and the processing conditions that define the nanostructure generated, with the final performance studies typically conducted with either therapeutic agents by in vitro and/or in vivo experiments or biomedical devices.
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Affiliation(s)
- Carmen Moya-Lopez
- Laboratoire Matériaux Optiques Photonique et Systèmes (LMOPS), CentraleSupélec, Université de Lorraine, 57000 Metz, France
| | - Joaquín González-Fuentes
- Centro Regional de Investigaciones Biomédicas (CRIB), 02008 Albacete, Spain
- Facultad de Farmacia de Albacete, Universidad de Castilla-La Mancha, 02008 Albacete, Spain
| | - Iván Bravo
- Facultad de Farmacia de Albacete, Universidad de Castilla-La Mancha, 02008 Albacete, Spain
- Unidad NanoCRIB, Centro Regional de Investigaciones Biomédicas, 02008 Albacete, Spain
| | - David Chapron
- Laboratoire Matériaux Optiques Photonique et Systèmes (LMOPS), CentraleSupélec, Université de Lorraine, 57000 Metz, France
| | - Patrice Bourson
- Laboratoire Matériaux Optiques Photonique et Systèmes (LMOPS), CentraleSupélec, Université de Lorraine, 57000 Metz, France
| | - Carlos Alonso-Moreno
- Facultad de Farmacia de Albacete, Universidad de Castilla-La Mancha, 02008 Albacete, Spain
- Unidad NanoCRIB, Centro Regional de Investigaciones Biomédicas, 02008 Albacete, Spain
| | - Daniel Hermida-Merino
- DUBBLE@ESRF BP CS40220, 38043 Grenoble, France
- Departamento de Física Aplicada, CINBIO, Lagoas-Marcosende Campus, Universidade de Vigo, 36310 Vigo, Spain
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12
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Promnil S, Ruksakulpiwat C, Numpaisal PO, Ruksakulpiwat Y. Electrospun Poly(lactic acid) and Silk Fibroin Based Nanofibrous Scaffold for Meniscus Tissue Engineering. Polymers (Basel) 2022; 14:polym14122435. [PMID: 35746011 PMCID: PMC9231281 DOI: 10.3390/polym14122435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 06/06/2022] [Accepted: 06/13/2022] [Indexed: 11/23/2022] Open
Abstract
Biopolymer based scaffolds are commonly considered as suitable materials for medical application. Poly(lactic acid) (PLA) is one of the most popular polymers that has been used as a bioscaffold, but it has poor cell adhesion and slowly degrades in an in vitro environment. In this study, silk fibroin (SF) was selected to improve cell adhesion and degradability of electrospun PLA. In order to fabricate a PLA/SF scaffold that offered both biological and mechanical properties, related parameters such as solution viscosity and SF content were studied. By varying the concentration and molecular weight of PLA, the solution viscosity significantly changed. The effect of solution viscosity on the fiber forming ability and fiber morphology was elucidated. In addition, commercial (l-lactide, d-lactide PLA) and medical grade PLA (pure PLLA) were both investigated. Mechanical properties, thermal properties, biodegradability, wettability, cell viability, and gene expression of electrospun PLA and PLA/SF based nanofibrous scaffolds were examined. The results demonstrated that medical grade PLA electrospun scaffolds offered superior mechanical property, degradability, and cellular induction for meniscus tissue regeneration. However, for commercial non-medical grade PLA used in this study, it was not recommended to be used for medical application because of its toxicity. With the addition of SF in PLA based scaffolds, the in vitro degradability and hydrophilicity were improved. PLAmed50:SF50 scaffold has the potential to be used as biomimetic meniscus scaffold for scaffold augmented suture based on mechanical properties, cell viability, gene expression, surface wettability, and in vitro degradation.
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Affiliation(s)
- Siripanyo Promnil
- School of Polymer Engineering, Institute of Engineering, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand; (S.P.); (C.R.)
- Center of Excellence on Petrochemical and Materials Technology, Chulalongkorn University, Bangkok 10330, Thailand
- Research Center for Biocomposite Materials for Medical Industry and Agricultural and Food Industry, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
| | - Chaiwat Ruksakulpiwat
- School of Polymer Engineering, Institute of Engineering, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand; (S.P.); (C.R.)
- Center of Excellence on Petrochemical and Materials Technology, Chulalongkorn University, Bangkok 10330, Thailand
- Research Center for Biocomposite Materials for Medical Industry and Agricultural and Food Industry, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
| | - Piya-on Numpaisal
- Research Center for Biocomposite Materials for Medical Industry and Agricultural and Food Industry, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
- School of Orthopaedics, Institute of Medicine, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
- Correspondence: (P.-o.N.); (Y.R.); Tel.: +66-44-22-3917 (P.-o.N.); +66-44-22-3033 (Y.R.)
| | - Yupaporn Ruksakulpiwat
- School of Polymer Engineering, Institute of Engineering, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand; (S.P.); (C.R.)
- Center of Excellence on Petrochemical and Materials Technology, Chulalongkorn University, Bangkok 10330, Thailand
- Research Center for Biocomposite Materials for Medical Industry and Agricultural and Food Industry, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
- Correspondence: (P.-o.N.); (Y.R.); Tel.: +66-44-22-3917 (P.-o.N.); +66-44-22-3033 (Y.R.)
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13
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Poly(lactic acid)-Based Electrospun Fibrous Structures for Biomedical Applications. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12063192] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Poly(lactic acid)(PLA) is an aliphatic polyester that can be derived from natural and renewable resources. Owing to favorable features, such as biocompatibility, biodegradability, good thermal and mechanical performance, and processability, PLA has been considered as one of the most promising biopolymers for biomedical applications. Particularly, electrospun PLA nanofibers with distinguishing characteristics, such as similarity to the extracellular matrix, large specific surface area and high porosity with small pore size and tunable mechanical properties for diverse applications, have recently given rise to advanced spillovers in the medical area. A variety of PLA-based nanofibrous structures have been explored for biomedical purposes, such as wound dressing, drug delivery systems, and tissue engineering scaffolds. This review highlights the recent advances in electrospinning of PLA-based structures for biomedical applications. It also gives a comprehensive discussion about the promising approaches suggested for optimizing the electrospun PLA nanofibrous structures towards the design of specific medical devices with appropriate physical, mechanical and biological functions.
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Ivanoska-Dacikj A, Makreski P, Geskovski N, Karbowniczek J, Stachewicz U, Novkovski N, Tanasić J, Ristić I, Bogoeva-Gaceva G. Electrospun PEO/rGO Scaffolds: The Influence of the Concentration of rGO on Overall Properties and Cytotoxicity. Int J Mol Sci 2022; 23:ijms23020988. [PMID: 35055172 PMCID: PMC8779283 DOI: 10.3390/ijms23020988] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 01/09/2022] [Accepted: 01/13/2022] [Indexed: 01/27/2023] Open
Abstract
Reduced graphene oxide (rGO) is one of the graphene derivatives that can be employed to engineer bioactive and/or electroactive scaffolds. However, the influence of its low and especially high concentrations on scaffolds’ overall properties and cytotoxicity has yet to be explored. In this study, polyethylene oxide (PEO)-based scaffolds containing from 0.1 to 20 wt% rGO were obtained by electrospinning. Morphological, thermal and electrical properties of the scaffolds were characterized by SEM, Raman spectroscopy, XRD, DSC and electrical measurements. The diameter of the fibers decreased from 0.52 to 0.19 µm as the concentration of rGO increased from 0.1 wt% to 20 wt%. The presence of rGO above the percolation threshold (5.7 wt%) resulted in a significantly reduced electrical resistivity of the scaffolds. XRD and Raman analysis revealed delamination of the graphene layers (interlayer spacing increased from 0.36 nm to 0.40–0.41 nm), and exfoliation of rGO was detected for the samples with an rGO concentration lower than 1 wt%. In addition, an evident trend of increasing cell viability as a function of the rGO concentration was evidenced. The obtained results can serve as further guidance for the judicious selection of the rGO content incorporated into the PEO matrix for constructing electroactive scaffolds.
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Affiliation(s)
- Aleksandra Ivanoska-Dacikj
- Research Centre for Environment and Materials, Macedonian Academy of Sciences and Arts, Krste Misirkov 2, 1000 Skopje, North Macedonia; (N.N.); (G.B.-G.)
- Correspondence:
| | - Petre Makreski
- Institute of Chemistry, Faculty of Natural Sciences and Mathematics, Ss. Cyril and Methodius University in Skopje, Arhimedova 5, 1000 Skopje, North Macedonia;
| | - Nikola Geskovski
- Institute of Pharmaceutical Technology, Faculty of Pharmacy, Ss. Cyril and Methodius University in Skopje, Majka Tereza 47, 1000 Skopje, North Macedonia;
| | - Joanna Karbowniczek
- Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, al. A. Mickiewicza 30, 30-059 Cracow, Poland; (J.K.); (U.S.)
| | - Urszula Stachewicz
- Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, al. A. Mickiewicza 30, 30-059 Cracow, Poland; (J.K.); (U.S.)
| | - Nenad Novkovski
- Research Centre for Environment and Materials, Macedonian Academy of Sciences and Arts, Krste Misirkov 2, 1000 Skopje, North Macedonia; (N.N.); (G.B.-G.)
- Institute of Physics, Faculty of Natural Science and Mathematics, Ss. Cyril and Methodius University in Skopje, Arhimedova 3, 1000 Skopje, North Macedonia
| | - Jelena Tanasić
- Faculty of Technology, University of Novi Sad, Bulevar cara Lazara 1, 21000 Novi Sad, Serbia; (J.T.); (I.R.)
| | - Ivan Ristić
- Faculty of Technology, University of Novi Sad, Bulevar cara Lazara 1, 21000 Novi Sad, Serbia; (J.T.); (I.R.)
| | - Gordana Bogoeva-Gaceva
- Research Centre for Environment and Materials, Macedonian Academy of Sciences and Arts, Krste Misirkov 2, 1000 Skopje, North Macedonia; (N.N.); (G.B.-G.)
- Faculty of Technology and Metallurgy, Ss. Cyril and Methodius University in Skopje, Rugjer Bošković 16, 1000 Skopje, North Macedonia
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15
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Controlling Pore Size of Electrospun Vascular Grafts by Electrospraying of Poly(Ethylene Oxide) Microparticles. Methods Mol Biol 2022; 2375:153-164. [PMID: 34591306 DOI: 10.1007/978-1-0716-1708-3_13] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Electrospinning has become a popular polymer processing technique for application in vascular tissue engineering due to its unique capability to fabricate porous vascular grafts with fibrous morphology closely mimicking the natural extracellular matrix (ECMs). However, the inherently small pore sizes of electrospun vascular grafts often inhibit cell infiltration and impede vascular regeneration. Here we describe an effective and controllable method to increase the pore size of electrospun poly(ε-caprolactone) (PCL) vascular graft. With this method, composite grafts are prepared by turning on or off electrospraying of poly(ethylene oxide) (PEO) microparticles during the process of electrospinning PCL fibers. The PEO microparticles are used as a porogen agent and can be subsequently selectively removed to create a porogenic layer within the electrospun PCL grafts. Three types of porogenic PCL grafts were constructed using this method. The porogenic layer was either the inner layer, the middle one, or the outer one.
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16
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Shang Z, Yan Y, Jiang J, Wang J, Yin X. Facile fabrication of silk fibroin/graphene oxide composite films and real‐time morphological observation in stretching. J Appl Polym Sci 2021. [DOI: 10.1002/app.51403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Zihan Shang
- College of Chemistry and Chemical Engineering Shanghai University of Engineering Science Shanghai China
| | - Yinan Yan
- College of Chemistry and Chemical Engineering Shanghai University of Engineering Science Shanghai China
- Nanobiological Medicine Laboratory National Engineering Research Centre for Nanotechnology Shanghai China
| | - Jie Jiang
- Nanobiological Medicine Laboratory National Engineering Research Centre for Nanotechnology Shanghai China
| | - Jielin Wang
- School of Materials Science and Engineering Shanghai Jiao Tong University Shanghai China
| | - Xiaoying Yin
- College of Chemistry and Chemical Engineering Shanghai University of Engineering Science Shanghai China
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Chen H, Zhang H, Shen Y, Dai X, Wang X, Deng K, Long X, Liu L, Zhang X, Li Y, Xu T. Instant in-situ Tissue Repair by Biodegradable PLA/Gelatin Nanofibrous Membrane Using a 3D Printed Handheld Electrospinning Device. Front Bioeng Biotechnol 2021; 9:684105. [PMID: 34395397 PMCID: PMC8355707 DOI: 10.3389/fbioe.2021.684105] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Accepted: 06/24/2021] [Indexed: 11/15/2022] Open
Abstract
Background: This study aims to design a 3D printed handheld electrospinning device and evaluate its effect on the rapid repair of mouse skin wounds. Methods: The device was developed by Solidworks and printed by Object 350 photosensitive resin printer. The polylactic acid (PLA)/gelatin blend was used as the raw material to fabricate in-situ degradable nanofiber scaffolds. Scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and water vapor permeability test were used to evaluate the material properties of the scaffolds; cytotoxicity test was performed to evaluate material/residual solvent toxicity, and in situ tissue repair experiments in Balb/c mouse were performed. Results: The 3D printed handheld electrospinning device successfully fabricates PLA/gelatin nanofibrous membrane with uniformly layered nanofibers and good biocompatibility. Animal experiments showed that the mice in the experimental group had complete skin repair. Conclusions: The 3D printed handheld device can achieve in situ repair of full-thickness defects in mouse skin.
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Affiliation(s)
- Hongrang Chen
- Department of General Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Haitao Zhang
- Department of Research & Development, East China Institute of Digital Medical Engineering, Shangrao, China
| | - Yun Shen
- Department of General Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Xingliang Dai
- Department of Neurosurgery, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Xuanzhi Wang
- Department of Neurosurgery, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Kunxue Deng
- Department of Research & Development, East China Institute of Digital Medical Engineering, Shangrao, China
| | - Xiaoyan Long
- Department of Research & Development, East China Institute of Digital Medical Engineering, Shangrao, China
| | - Libiao Liu
- Department of Research & Development, East China Institute of Digital Medical Engineering, Shangrao, China
| | - Xinzhi Zhang
- Department of Mechanical Engineering, Biomanufacturing Center, Tsinghua University, Beijing, China
| | - Yongsheng Li
- Department of General Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Tao Xu
- Department of Mechanical Engineering, Biomanufacturing Center, Tsinghua University, Beijing, China.,Department of Precision Medicine and Healthcare, Tsinghua-Berkeley Shenzhen Institute, Shenzhen, China
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18
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Kovylin RS, Aleynik DY, Fedushkin IL. Modern Porous Polymer Implants: Synthesis, Properties, and Application. POLYMER SCIENCE SERIES C 2021. [DOI: 10.1134/s1811238221010033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Abstract
The needs of modern surgery triggered the intensive development of transplantology, medical materials science, and tissue engineering. These directions require the use of innovative materials, among which porous polymers occupy one of the leading positions. The use of natural and synthetic polymers makes it possible to adjust the structure and combination of properties of a material to its particular application. This review generalizes and systematizes the results of recent studies describing requirements imposed on the structure and properties of synthetic (or artificial) porous polymer materials and implants on their basis and the advantages and limitations of synthesis methods. The most extensively employed, promising initial materials are considered, and the possible areas of application of polymer implants based on these materials are highlighted.
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19
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Antibacterial properties and cytocompatibility of biobased nanofibers of fish scale gelatine, modified polylactide, and freshwater clam shell. Int J Biol Macromol 2020; 165:1219-1228. [PMID: 33038395 DOI: 10.1016/j.ijbiomac.2020.10.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Revised: 09/22/2020] [Accepted: 10/01/2020] [Indexed: 01/13/2023]
Abstract
We report herein new nanofibers prepared from fish scale gelatine (FSG), modified polylactide (MPLA), and a natural antibacterial agent of freshwater clam (Corbicula fluminea Estefanía) shell powder (FCSP). A preparation of FSG from Mullet scales is also described. To improve the biocompatibility and antibacterial activity of the non-woven nanofibers, MPLA/FCSP was added to enhance their antibacterial properties. FSG was then combined with MPLA/FCSP using an electrospinning technique to improve the biocompatibility of the as-fabricated 100-500-nm-diameter non-woven MPLA/FCSP/FSG nanofibers. The resulting tensile properties and morphological characteristics indicated enhanced adhesion among FSG, FCSP, and MPLA in the MPLA/FCSP/FSG nanofibers, as well as improved water resistance and tensile strength, compared with the PLA/FSG nanofibers. MTT assay, cell-cycle, and apoptosis analyses showed that both PLA/FSG and MPLA/FCSP/FSG nanofibers had good biocompatibility. Increasing the FSG content in PLA/FSG and MPLA/FCSP/FSG nanofibers enhanced cell proliferation and free-radical scavenging ability, but did not affect cell viability. Quantitative analysis of bacteria inhibition revealed that FCSP imparts antibacterial activity.
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20
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Eom S, Park SM, Hong H, Kwon J, Oh SR, Kim J, Kim DS. Hydrogel-Assisted Electrospinning for Fabrication of a 3D Complex Tailored Nanofiber Macrostructure. ACS APPLIED MATERIALS & INTERFACES 2020; 12:51212-51224. [PMID: 33153261 DOI: 10.1021/acsami.0c14438] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Electrospinning has shown great potential in tissue engineering and regenerative medicine due to a high surface-area-to-volume ratio and an extracellular matrix-mimicking structure of electrospun nanofibers, but the fabrication of a complex three-dimensional (3D) macroscopic configuration with electrospun nanofibers remains challenging. In the present study, we developed a novel hydrogel-assisted electrospinning process (GelES) to fabricate a 3D nanofiber macrostructure with a 3D complex but tailored configuration by utilizing a 3D hydrogel structure as a grounded collector instead of a metal collector in conventional electrospinning. The 3D hydrogel collector was discovered to effectively concentrate the electric field toward itself similar to the metal collector, thereby depositing electrospun nanofibers directly on its exterior surface. Synergistic advantages of the hydrogel (e.g., biocompatibility and thermally reversible sol-gel transition) and the 3D nanofiber macrostructure (e.g., mechanical robustness and high permeability) provided by the GelES process were demonstrated in a highly permeable tubular tissue graft and a robust drug- or cell-encapsulation construct. GelES is expected to broaden potential applications of electrospinning to not only provide in vivo drug/cell delivery and tissue regeneration but also an in vitro drug testing platform by increasing the degree of freedom in the configuration of the 3D nanofiber macrostructure.
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Affiliation(s)
- Seongsu Eom
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang, Gyeongbuk 37673, South Korea
| | - Sang Min Park
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang, Gyeongbuk 37673, South Korea
| | - Hyeonjun Hong
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang, Gyeongbuk 37673, South Korea
| | - Jinju Kwon
- Department of Public Health Science, Graduate School, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, South Korea
| | - Sang-Rok Oh
- Robotics and Media Research Institute, Korea Institute of Science and Technology, 14 Hwarang-ro, Seongbuk-gu, Seoul 02792, South Korea
| | - Junesun Kim
- Department of Public Health Science, Graduate School, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, South Korea
- Department of Physical Therapy, College of Health Science, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, South Korea
- Department of Health and Environmental Science, College of Health Science, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, South Korea
| | - Dong Sung Kim
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang, Gyeongbuk 37673, South Korea
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21
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Silk fibroin as a natural polymeric based bio-material for tissue engineering and drug delivery systems-A review. Int J Biol Macromol 2020; 163:2145-2161. [DOI: 10.1016/j.ijbiomac.2020.09.057] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 09/06/2020] [Accepted: 09/09/2020] [Indexed: 12/13/2022]
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22
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Tandon S, Kandasubramanian B, Ibrahim SM. Silk-Based Composite Scaffolds for Tissue Engineering Applications. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c02195] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Saloni Tandon
- Biotechnology Lab, Center for Converging Technologies, University of Rajasthan, JLN Marg, Jaipur-302004, Rajasthan, India
| | - Balasubramanian Kandasubramanian
- Nano Surface Texturing Lab, Department of Metallurgical and Materials Engineering, Defence Institute of Advanced Technology (DU), Girinagar, Pune-411025, Maharashtra, India
| | - Sobhy M. Ibrahim
- Department of Biochemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
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23
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Hosseinpor H, Khaledi A, Esmaeili D. The properties of nanofiber scaffolds of polyurethane-Cinnamomum zeylanicum against pathogens of Pseudomonas aeruginosa and Staphylococcus aureus. Polym Bull (Berl) 2020. [DOI: 10.1007/s00289-019-03095-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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24
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Biodegradable Polylactide/TiO 2 Composite Fiber Scaffolds with Superhydrophobic and Superadhesive Porous Surfaces for Water Immobilization, Antibacterial Performance, and Deodorization. Polymers (Basel) 2019; 11:polym11111860. [PMID: 31718022 PMCID: PMC6918282 DOI: 10.3390/polym11111860] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 11/08/2019] [Accepted: 11/08/2019] [Indexed: 02/04/2023] Open
Abstract
In this short communication, TiO2-nanoparticle-functionalized biodegradable polylactide (PLA) nonwoven scaffolds with a superhydrophobic and superadhesive surface are reported regarding their water immobilization, antibacterial performance, and deodorization. With numerous regular oriented pores on their surface, the as-fabricated electrospun porous PLA/TiO2 composite fibers possessed diameters in the range from 5 µm down to 400 nm, and the lengths were even found to be up to the meters range. The PLA/TiO2 composite fiber surface was demonstrated to be both superhydrophobic and superadhesive. The size of the pores on the fiber surface was observed to have a length of 200 ± 100 nm and a width of 150 ± 50 nm using field-emission scanning electron microscopy and transmission electron microscopy. The powerful adhesive force of the PLA/TiO2 composite fibers toward water droplets was likely a result of van der Waals forces and accumulated negative pressure forces. Such a fascinating porous surface (functionalized with TiO2 nanoparticles) of the PLA/TiO2 composite fiber scaffold endowed it with multiple useful functions, including water immobilization, antibacterial performance, and deodorization.
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25
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Gao X, Han S, Zhang R, Liu G, Wu J. Progress in electrospun composite nanofibers: composition, performance and applications for tissue engineering. J Mater Chem B 2019; 7:7075-7089. [PMID: 31660575 DOI: 10.1039/c9tb01730e] [Citation(s) in RCA: 62] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The discovery of novel methods to fabricate optimal scaffolds that mimic both mechanical and functional properties of the extracellular matrix (ECM) has always been the "holy grail" in tissue engineering. In recent years, electrospinning has emerged as an attractive material fabrication method and has been widely applied in tissue engineering due to its capability of producing non-woven and nanoscale fibers. However, from the perspective of biomimicry, it is difficult for single-component electrospun fiber membranes to achieve the biomimetic purposes of the multi-component extracellular matrix. Based on electrospinning, various functional components can be efficiently and expediently introduced into the membranes, and through the complementation and correlation of the properties of each component, composite materials with comprehensive and superior properties are obtained while maintaining the primitive merits of each component. In this review, we will provide an overview of the attempts made to fabricate electrospinning-based composite tissue engineering materials in the past few decades, which have been divided into organic additives, inorganic additives and organic-inorganic additives.
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Affiliation(s)
- Xize Gao
- Key Laboratory of Sensing Technology and Biomedical Instrument of Guangdong Province, School of Biomedical Engineering, Sun Yat-sen University, Guangzhou, Guangdong, 510006, P. R. China.
| | - Shuyan Han
- Key Laboratory of Sensing Technology and Biomedical Instrument of Guangdong Province, School of Biomedical Engineering, Sun Yat-sen University, Guangzhou, Guangdong, 510006, P. R. China.
| | - Ruhe Zhang
- Key Laboratory of Sensing Technology and Biomedical Instrument of Guangdong Province, School of Biomedical Engineering, Sun Yat-sen University, Guangzhou, Guangdong, 510006, P. R. China.
| | - Guiting Liu
- Key Laboratory of Sensing Technology and Biomedical Instrument of Guangdong Province, School of Biomedical Engineering, Sun Yat-sen University, Guangzhou, Guangdong, 510006, P. R. China.
| | - Jun Wu
- Key Laboratory of Sensing Technology and Biomedical Instrument of Guangdong Province, School of Biomedical Engineering, Sun Yat-sen University, Guangzhou, Guangdong, 510006, P. R. China. and Research Institute of Sun Yat-Sen University in Shenzhen, Shenzhen, 518057, P. R. China
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26
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Luo W, Cheng L, Yuan C, Wu Z, Yuan G, Hou M, Chen JY, Luo C, Li W. Preparation, characterization and evaluation of cellulose nanocrystal/poly(lactic acid) in situ nanocomposite scaffolds for tissue engineering. Int J Biol Macromol 2019; 134:469-479. [PMID: 31078594 DOI: 10.1016/j.ijbiomac.2019.05.052] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Revised: 04/26/2019] [Accepted: 05/08/2019] [Indexed: 12/23/2022]
Abstract
Cellulose nanocrystal (CNC)/poly(lactic acid) (PLA) in situ nanocomposite scaffolds were fabricated by in situ polymerization of lactic acid and CNC which was directly utilized as aqueous suspension, followed by a process of thermally induced phase separation. The CNC/PLA in situ nanocomposite porous scaffolds were characterized by mechanical test, protein adsorption, hemolysis test, in vitro degradation measurement, TEM, FTIR, SEM and WAXD. Compared to the PLA scaffold, the CNC/PLA in situ nanocomposite scaffolds showed a greatly increased compression modulus, an improved hemocompatibility and protein adsorption capacity. The inclusion of CNCs boosted the in vitro degradation of the in situ nanocomposite porous scaffolds and facilitated the deposition of Ca2+, CO32-, PO43- ions in simulated body fluid. Furthermore, cell cultures were carried out on the CNC/PLA in situ nanocomposite porous scaffolds. In comparison with the PLA scaffold, the in situ nanocomposite scaffolds improved cell attachment and enhanced cell proliferation, denoting low cytotoxicity and good cytocompatibility. It can therefore be concluded that such scaffolds with excellent mechanical property, biocompatibility, biomineralization capacity and bioactivity hold great potential for bone tissue engineering.
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Affiliation(s)
- Weihua Luo
- College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China; Hunan Province Key Laboratory of Materials Surface & Interface Science and Technology, Central South University of Forestry and Technology, Changsha 410004, China; School of Human Ecology, The University of Texas at Austin, Austin, TX 78712, USA.
| | - Lianghao Cheng
- College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China
| | - Caixia Yuan
- College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China
| | - Zhiping Wu
- College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China; Hunan Province Key Laboratory of Materials Surface & Interface Science and Technology, Central South University of Forestry and Technology, Changsha 410004, China
| | - Guangming Yuan
- College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China; Hunan Province Key Laboratory of Materials Surface & Interface Science and Technology, Central South University of Forestry and Technology, Changsha 410004, China
| | - Mingxi Hou
- College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China
| | - Jonathan Y Chen
- School of Human Ecology, The University of Texas at Austin, Austin, TX 78712, USA
| | - Chunyi Luo
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Wei Li
- Department of Mechanical Engineering, The University of Texas at Austin, Austin, TX 78712, USA
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27
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Biocompatibility and biodegradation properties of polycaprolactone/polydioxanone composite scaffolds prepared by blend or co-electrospinning. J BIOACT COMPAT POL 2019. [DOI: 10.1177/0883911519835569] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Electrospun polymer scaffolds are regarded as an ideal tissue engineering scaffold due to similar morphological properties with the native extracellular matrix. Among these, polycaprolactone is widely used to fabricate electrospun fibrous scaffolds due to its excellent biocompatibility, good mechanical properties, and ease of manufacture. However, its low biodegradation rate has a negative influence on its application in tissue engineering scaffold. To address this issue, this study prepared hybrid scaffolds composed of polycaprolactone and polydioxanone (a fast-degrading polyether-ester) via either the blend or co-electrospinning. Subsequently, the structural characteristics, mechanical strength, in vitro/vivo degradation, cellularization, and vascularization of two kinds of hybrid scaffolds were evaluated to decide which method is more suitable for producing tissue engineering scaffolds. The incorporation of polydioxanone increased the mechanical strength of both composite scaffolds. Moreover, co-electrospun scaffolds exhibited improved hydrophilicity compared to blend scaffolds. The results of in vitro and in vivo degradation studies showed that the degradation rate of both composite scaffolds was faster than that of neat polycaprolactone scaffolds due to the incorporated polydioxanone component. Especially in co-electrospun scaffolds, the fast degradation of polydioxanone fiber gave rise to larger pore size, thus leading to faster cellularization and better vascularization compared to blend scaffolds. Therefore, co-electrospinning was demonstrated to be superior to blend electrospinning for the preparation of composite scaffolds. Co-electrospun polycaprolactone–polydioxanone scaffolds may be promising candidates for tissue engineering.
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28
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Patwa R, Soundararajan N, Mulchandani N, Bhasney SM, Shah M, Kumar S, Kumar A, Katiyar V. Silk nano-discs: A natural material for cancer therapy. Biopolymers 2018; 109:e23231. [DOI: 10.1002/bip.23231] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Revised: 05/28/2018] [Accepted: 05/30/2018] [Indexed: 01/11/2023]
Affiliation(s)
- Rahul Patwa
- Department of Chemical Engineering; Indian Institute of Technology Guwahati; Guwahati Assam India
| | - Narendren Soundararajan
- Department of Chemical Engineering; Indian Institute of Technology Guwahati; Guwahati Assam India
| | - Neha Mulchandani
- Department of Chemical Engineering; Indian Institute of Technology Guwahati; Guwahati Assam India
| | - Siddharth M. Bhasney
- Department of Chemical Engineering; Indian Institute of Technology Guwahati; Guwahati Assam India
| | - Manisha Shah
- Department of Biosciences & Bioengineering; Indian Institute of Technology Guwahati; Guwahati Assam India
| | - Sachin Kumar
- Department of Biosciences & Bioengineering; Indian Institute of Technology Guwahati; Guwahati Assam India
| | - Amit Kumar
- Department of Chemical Engineering; Indian Institute of Technology Guwahati; Guwahati Assam India
| | - Vimal Katiyar
- Department of Chemical Engineering; Indian Institute of Technology Guwahati; Guwahati Assam India
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Ma D, Wang Y, Dai W. Silk fibroin-based biomaterials for musculoskeletal tissue engineering. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 89:456-469. [DOI: 10.1016/j.msec.2018.04.062] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Revised: 02/22/2018] [Accepted: 04/19/2018] [Indexed: 12/16/2022]
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Brennan DA, Conte AA, Kanski G, Turkula S, Hu X, Kleiner MT, Beachley V. Mechanical Considerations for Electrospun Nanofibers in Tendon and Ligament Repair. Adv Healthc Mater 2018; 7:e1701277. [PMID: 29603679 DOI: 10.1002/adhm.201701277] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Revised: 01/15/2018] [Indexed: 12/22/2022]
Abstract
Electrospun nanofibers possess unique qualities such as nanodiameter, high surface area to volume ratio, biomimetic architecture, and tunable chemical and electrical properties. Numerous studies have demonstrated the potential of nanofibrous architecture to direct cell morphology, migration, and more complex biological processes such as differentiation and extracellular matrix (ECM) deposition through topographical guidance cues. These advantages have created great interest in electrospun fibers for biomedical applications, including tendon and ligament repair. Electrospun nanofibers, despite their nanoscale size, generally exhibit poor mechanical properties compared to larger conventionally manufactured polymer fiber materials. This invites the question of what role electrospun polymer nanofibers can play in tendon and ligament repair applications that have both biological and mechanical requirements. At first glance, the strength and stiffness of electrospun nanofiber grafts appear to be too low to fill the rigorous loading conditions of these tissues. However, there are a number of strategies to enhance and tune the mechanical properties of electrospun nanofiber grafts. As researchers design the next-generation electrospun tendon and ligament grafts, it is critical to consider numerous physiologically relevant mechanical criteria and to evaluate graft mechanical performance in conditions and loading environments that reflect in vivo conditions and surgical fixation methods.
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Affiliation(s)
- David A. Brennan
- Department of Biomedical Engineering Rowan University 201 Mullica Hill Road, Rowan Hall Glassboro NJ 08028 USA
| | - Adriano A. Conte
- Department of Biomedical Engineering Rowan University 201 Mullica Hill Road, Rowan Hall Glassboro NJ 08028 USA
| | - Gregory Kanski
- Cooper Bone and Joint Institute and Cooper Medical School, Rowan University 3 Cooper Plaza Camden NJ 08103 USA
| | - Stefan Turkula
- Cooper Bone and Joint Institute and Cooper Medical School, Rowan University 3 Cooper Plaza Camden NJ 08103 USA
| | - Xiao Hu
- Department of Biomedical Engineering Rowan University 201 Mullica Hill Road, Rowan Hall Glassboro NJ 08028 USA
- Department of Physics and Astronomy Rowan University 201 Mullica Hill Road, Rowan Hall Glassboro NJ 08028 USA
| | - Matthew T. Kleiner
- Cooper Bone and Joint Institute and Cooper Medical School, Rowan University 3 Cooper Plaza Camden NJ 08103 USA
| | - Vince Beachley
- Department of Biomedical Engineering Rowan University 201 Mullica Hill Road, Rowan Hall Glassboro NJ 08028 USA
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31
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Awad NK, Niu H, Ali U, Morsi YS, Lin T. Electrospun Fibrous Scaffolds for Small-Diameter Blood Vessels: A Review. MEMBRANES 2018; 8:E15. [PMID: 29509698 PMCID: PMC5872197 DOI: 10.3390/membranes8010015] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Revised: 01/31/2018] [Accepted: 02/28/2018] [Indexed: 11/24/2022]
Abstract
Small-diameter blood vessels (SDBVs) are still a challenging task to prepare due to the occurrence of thrombosis formation, intimal hyperplasia, and aneurysmal dilation. Electrospinning technique, as a promising tissue engineering approach, can fabricate polymer fibrous scaffolds that satisfy requirements on the construction of extracellular matrix (ECM) of native blood vessel and promote the adhesion, proliferation, and growth of cells. In this review, we summarize the polymers that are deployed for the fabrication of SDBVs and classify them into three categories, synthetic polymers, natural polymers, and hybrid polymers. Furthermore, the biomechanical properties and the biological activities of the electrospun SBVs including anti-thrombogenic ability and cell response are discussed. Polymer blends seem to be a strategic way to fabricate SDBVs because it combines both suitable biomechanical properties coming from synthetic polymers and favorable sites to cell attachment coming from natural polymers.
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Affiliation(s)
- Nasser K Awad
- Biomechanics and Tissue Engineering Group, Swinburne University of Technology, Hawthorn, VIC 3122, Australia.
- Institute for Frontier Materials, Deakin University, Geelong, VIC 3216, Australia.
- Electrochemistry and Corrosion Laboratory, National Research Centre, Dokki, Cairo 12422, Egypt.
| | - Haitao Niu
- Institute for Frontier Materials, Deakin University, Geelong, VIC 3216, Australia.
| | - Usman Ali
- Institute for Frontier Materials, Deakin University, Geelong, VIC 3216, Australia.
- College of Textile Engineering, Bahauddin Zakariya University, Multan 60800, Pakistan.
| | - Yosry S Morsi
- Biomechanics and Tissue Engineering Group, Swinburne University of Technology, Hawthorn, VIC 3122, Australia.
| | - Tong Lin
- Institute for Frontier Materials, Deakin University, Geelong, VIC 3216, Australia.
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32
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Wang SD, Ma Q, Wang K, Chen HW. Improving Antibacterial Activity and Biocompatibility of Bioinspired Electrospinning Silk Fibroin Nanofibers Modified by Graphene Oxide. ACS OMEGA 2018; 3:406-413. [PMID: 30023780 PMCID: PMC6044913 DOI: 10.1021/acsomega.7b01210] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Accepted: 01/03/2018] [Indexed: 05/20/2023]
Abstract
In this article, the silk fibroin (SF)/graphene oxide (GO)-blended nanofibers with one bioinspired nanostructure are fabricated via electrospinning. The morphology, chemical structure, antibacterial activity, and biocompatibility of the blending nanofibers are investigated. The results indicate that GO plays an important role in preparing the distinctive bioinspired structure. The antibacterial activity and in vivo cell culture test demonstrate that blending of GO could improve the antibacterial activity and biocompatibility of SF nanofibers. The blended nanofibers developed in this study may have considerable potential for wound dressing applications.
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Wang SD, Ma Q, Wang K, Ma PB. Strong and biocompatible three-dimensional porous silk fibroin/graphene oxide scaffold prepared by phase separation. Int J Biol Macromol 2018; 111:237-246. [PMID: 29320721 DOI: 10.1016/j.ijbiomac.2018.01.021] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2017] [Revised: 12/25/2017] [Accepted: 01/04/2018] [Indexed: 11/27/2022]
Abstract
Silk fibroin (SF) is blended with graphene oxide (GO) to prepare the strong and biocompatible three dimensional porous SF/GO blended scaffold via phase separation. GO could be well dispersed in SF solution and GO could also be well distributed in the SF scaffold. Furthermore, the introduction of GO can lead to structural change in the bended scaffold. Higher concentration of GO resulted in more compact structure and smaller pore size of the composite scaffolds without decreasing their porosity. Scanning electron microscopy and energy dispersive spectrometry results also reveal that SF and GO are homogeneous blended together. Analysis of chemical structures of the scaffold shows that addition of GO do not affect the crystalline structure of SF and it is evenly blended with SF. The blended scaffold has significantly higher breaking strength than the pure SF scaffold. In vitro study indicates that both pure SF scaffold and SF/GO composite scaffold support growth and proliferation of MC3T3-E1 osteoprogenitor cells. However, the addition of GO contribute to the proliferation of MC3T3-E1 osteoprogenitor. The testing results show that the blended scaffold is an appropriate candidate for tissue engineering.
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Affiliation(s)
- Shu-Dong Wang
- Jiangsu Research and Development Center of the Ecological Textile Engineering and Technology, School of Textile and Clothing, Yancheng Polytechnic College, Yancheng 224005, China; Ministry of Education's Key Laboratory of Eco-textiles, Jiangnan University, Wuxi 214112, China; Hubei New Textile Material & Application Key Laboratory, Wuhan Textile University, Wuhan 430200, China.
| | - Qian Ma
- Jiangsu Research and Development Center of the Ecological Textile Engineering and Technology, School of Textile and Clothing, Yancheng Polytechnic College, Yancheng 224005, China
| | - Ke Wang
- Jiangsu Research and Development Center of the Ecological Textile Engineering and Technology, School of Textile and Clothing, Yancheng Polytechnic College, Yancheng 224005, China
| | - Pi-Bo Ma
- Ministry of Education's Key Laboratory of Eco-textiles, Jiangnan University, Wuxi 214112, China.
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34
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Chiarini A, Freddi G, Liu D, Armato U, Dal Prà I. Biocompatible Silk Noil-Based Three-Dimensional Carded-Needled Nonwoven Scaffolds Guide the Engineering of Novel Skin Connective Tissue. Tissue Eng Part A 2017; 22:1047-60. [PMID: 27411949 DOI: 10.1089/ten.tea.2016.0124] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Retracting hypertrophic scars resulting from healed burn wounds heavily impact on the patients' life quality. Biomaterial scaffolds guiding burned-out skin regeneration could suppress or lessen scar retraction. Here we report a novel silk noil-based three-dimensional (3D) nonwoven scaffold produced by carding and needling with no formic acid exposure, which might improve burn healing. Once wetted, it displays human skin-like physical features and a high biocompatibility. Human keratinocyte-like cervical carcinoma C4-I cells seeded onto the carded-needled nonwovens in vitro quickly adhered to them, grew, and actively metabolized glutamine releasing lactate. As on plastic, they released no proinflammatory IL-1β, although secreting tumor necrosis factor-alpha, an inducer of the autocrine mitogen amphiregulin in such cells. Once grafted into interscapular subcutaneous tissue of mice, carded-needled nonwovens guided the afresh assembly of a connective tissue enveloping the fibroin microfibers and filling the interposed voids within 3 months. Fibroblasts and a few poly- or mononucleated macrophages populated the engineered tissue. Besides, its extracellular matrix contained thin sparse collagen fibrils and a newly formed vascular network whose endothelin-1-expressing endothelial cells grew first on the fibroin microfibrils and later expanded into the intervening matrix. Remarkably, no infiltrates of inflammatory leukocytes and no packed collagen fibers bundles among fibroin microfibers, no fibrous capsules at the grafts periphery, and hence no foreign body response was obtained at the end of 3 months of observation. Therefore, we posit that silk noil-based 3D carded-needled nonwoven scaffolds are tools for translational medicine studies as they could guide connective tissue regeneration at deep burn wounds averting scar retraction with good functional results.
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Affiliation(s)
- Anna Chiarini
- 1 Human Histology and Embryology Unit, University of Verona Medical School , Verona, Italy
| | | | - Daisong Liu
- 3 Burns Institute, Third Military Medical University , Chongqing, China
| | - Ubaldo Armato
- 1 Human Histology and Embryology Unit, University of Verona Medical School , Verona, Italy
| | - Ilaria Dal Prà
- 1 Human Histology and Embryology Unit, University of Verona Medical School , Verona, Italy
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35
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Jiang S, Liu H, Zhang X, Ren Y, Cui X, Song X. Synthesis of PCL-branched P(MMA-co
-HEMA) to toughen electrospun PLLA fiber membrane. POLYM ADVAN TECHNOL 2017. [DOI: 10.1002/pat.4133] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
| | | | - Xue Zhang
- School of Chemical Engineering; Changchun University of Technology; Changchun 130012 PR China
| | - Yajun Ren
- School of Chemical Engineering; Changchun University of Technology; Changchun 130012 PR China
| | - Xinxiang Cui
- School of Chemical Engineering; Changchun University of Technology; Changchun 130012 PR China
| | - Xiaofeng Song
- School of Chemical Engineering; Changchun University of Technology; Changchun 130012 PR China
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36
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Pan Y, Zhou X, Wei Y, Zhang Q, Wang T, Zhu M, Li W, Huang R, Liu R, Chen J, Fan G, Wang K, Kong D, Zhao Q. Small-diameter hybrid vascular grafts composed of polycaprolactone and polydioxanone fibers. Sci Rep 2017; 7:3615. [PMID: 28620160 PMCID: PMC5472623 DOI: 10.1038/s41598-017-03851-1] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Accepted: 05/05/2017] [Indexed: 01/06/2023] Open
Abstract
Electrospun polycaprolactone (PCL) vascular grafts showed good mechanical properties and patency. However, the slow degradation of PCL limited vascular regeneration in the graft. Polydioxanone (PDS) is a biodegradable polymer with high mechanical strength and moderate degradation rate in vivo. In this study, a small-diameter hybrid vascular graft was prepared by co-electrospinning PCL and PDS fibers. The incorporation of PDS improves mechanical properties, hydrophilicity of the hybrid grafts compared to PCL grafts. The in vitro/vivo degradation assay showed that PDS fibers completely degraded within 12 weeks, which resulted in the increased pore size of PCL/PDS grafts. The healing characteristics of the hybrid grafts were evaluated by implantation in rat abdominal aorta replacement model for 1 and 3 months. Color Doppler ultrasound demonstrated PCL/PDS grafts had good patency, and did not show aneurysmal dilatation. Immunofluorescence staining showed the coverage of endothelial cells (ECs) was significantly enhanced in PCL/PDS grafts due to the improved surface hydrophilicity. The degradation of PDS fibers provided extra space, which facilitated vascular smooth muscle regeneration within PCL/PDS grafts. These results suggest that the hybrid PCL/PDS graft may be a promising candidate for the small-diameter vascular grafts.
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Affiliation(s)
- Yiwa Pan
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - Xin Zhou
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - Yongzhen Wei
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - Qiuying Zhang
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - Ting Wang
- Urban Transport Emission Control Research Centre, College of Environmental Science and Engineering, Nankai University, Tianjin, 300071, China
| | - Meifeng Zhu
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - Wen Li
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - Rui Huang
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - Ruming Liu
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - Jingrui Chen
- Center for Research and Development of Chinese Medicine, Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 300193, China
| | - Guanwei Fan
- Center for Research and Development of Chinese Medicine, Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 300193, China
| | - Kai Wang
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences, Nankai University, Tianjin, 300071, China.
| | - Deling Kong
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - Qiang Zhao
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences, Nankai University, Tianjin, 300071, China.
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37
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Marcolin C, Draghi L, Tanzi M, Faré S. Electrospun silk fibroin-gelatin composite tubular matrices as scaffolds for small diameter blood vessel regeneration. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2017; 28:80. [PMID: 28397163 DOI: 10.1007/s10856-017-5884-9] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Accepted: 03/12/2017] [Indexed: 06/07/2023]
Abstract
In this work an innovative method to obtain natural and biocompatible small diameter tubular structures is proposed. The biocompatibility and good mechanical properties of electrospun silk fibroin tubular matrices (SFts), extensively studied for tissue engineering applications, have been coupled with the excellent cell interaction properties of gelatin. In fact, an innovative non-cytotoxic gelatin gel, crosslinked in mild conditions via a Michael-type addition reaction, has been used to coat SFt matrices and obtain SFt/gel structures (I.D. = 6 mm). SFts/gel exhibited homogeneous gelatin coating on the electrospun fibrous tubular structure. Circumferential tensile tests performed on SFts/gel showed mechanical properties comparable to those of natural blood vessels in terms of UTS, compliance and viscoelastic behavior. Finally, SFt/gel in vitro cytocompatibility was confirmed by the good viability and spread morphology of L929 fibroblasts up to 7 days. These results demonstrated that SFt/gel is a promising off-the-shelf graft for small diameter blood vessel regeneration.
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Affiliation(s)
- Chiara Marcolin
- Department of Chemistry, Materials and Chemical Engineering "G. Natta", Politecnico di Milano, Piazza L. Da Vinci 32, Milano, Italy
| | - Lorenza Draghi
- Department of Chemistry, Materials and Chemical Engineering "G. Natta", Politecnico di Milano, Piazza L. Da Vinci 32, Milano, Italy
- Local Unit Politecnico di Milano, INSTM, Milano, Italy
| | | | - Silvia Faré
- Department of Chemistry, Materials and Chemical Engineering "G. Natta", Politecnico di Milano, Piazza L. Da Vinci 32, Milano, Italy.
- Local Unit Politecnico di Milano, INSTM, Milano, Italy.
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38
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Peng L, Zhu J, Agarwal S. Self-Rolled Porous Hollow Tubes Made up of Biodegradable Polymers. Macromol Rapid Commun 2017; 38. [DOI: 10.1002/marc.201700034] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Revised: 02/02/2017] [Indexed: 11/10/2022]
Affiliation(s)
- Ling Peng
- Macromolecular Chemistry II and Bayreuth Center for Colloids and Interfaces; University of Bayreuth; Universitätsstraße 30 95440 Bayreuth Germany
| | - Jian Zhu
- Macromolecular Chemistry II and Bayreuth Center for Colloids and Interfaces; University of Bayreuth; Universitätsstraße 30 95440 Bayreuth Germany
| | - Seema Agarwal
- Macromolecular Chemistry II and Bayreuth Center for Colloids and Interfaces; University of Bayreuth; Universitätsstraße 30 95440 Bayreuth Germany
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39
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KARAHALİLOĞLU Z. Cell-compatible PHB/silk fibroin composite nanofibermat for tissue engineering applications. Turk J Biol 2017. [DOI: 10.3906/biy-1610-46] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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40
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Santoro M, Shah SR, Walker JL, Mikos AG. Poly(lactic acid) nanofibrous scaffolds for tissue engineering. Adv Drug Deliv Rev 2016; 107:206-212. [PMID: 27125190 PMCID: PMC5081275 DOI: 10.1016/j.addr.2016.04.019] [Citation(s) in RCA: 252] [Impact Index Per Article: 31.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2015] [Revised: 02/29/2016] [Accepted: 04/18/2016] [Indexed: 12/23/2022]
Abstract
Poly(lactic acid) (PLA) is a synthetic polyester that has shown extensive utility in tissue engineering. Synthesized either by ring opening polymerization or polycondensation, PLA hydrolytically degrades into lactic acid, a metabolic byproduct, making it suitable for medical applications. Specifically, PLA nanofibers have widened the possible uses of PLA scaffolds for regenerative medicine and drug delivery applications. The use of nanofibrous scaffolds imparts a host of desirable properties, including high surface area, biomimicry of native extracellular matrix architecture, and tuning of mechanical properties, all of which are important facets of designing scaffolds for a particular organ system. Additionally, nanofibrous PLA scaffolds hold great promise as drug delivery carriers, where fabrication parameters and drug-PLA compatibility greatly affect the drug release kinetics. In this review, we present the latest advances in the use of PLA nanofibrous scaffolds for musculoskeletal, nervous, cardiovascular, and cutaneous tissue engineering and offer perspectives on their future use.
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Affiliation(s)
- Marco Santoro
- Department of Chemical and Biomolecular Engineering, Rice University, Houston, TX 77005, United States
| | - Sarita R Shah
- Department of Bioengineering, Rice University, Houston, TX 77030, United States
| | - Jennifer L Walker
- Department of Bioengineering, Rice University, Houston, TX 77030, United States
| | - Antonios G Mikos
- Department of Chemical and Biomolecular Engineering, Rice University, Houston, TX 77005, United States; Department of Bioengineering, Rice University, Houston, TX 77030, United States.
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41
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Taddei P, Tozzi S, Zuccheri G, Martinotti S, Ranzato E, Chiono V, Carmagnola I, Tsukada M. Intermolecular interactions between B. mori silk fibroin and poly(l-lactic acid) in electrospun composite nanofibrous scaffolds. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 70:777-787. [PMID: 27770955 DOI: 10.1016/j.msec.2016.09.055] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Revised: 09/01/2016] [Accepted: 09/26/2016] [Indexed: 10/20/2022]
Abstract
In this study, composite nanofibrous scaffolds were obtained by electrospinning a trifluoroacetic acid solution containing B. mori silk fibroin (SF) and poly(l-lactic acid) (PLLA) in a 1:1 weight ratio. SF, PLLA and SF/PLLA nanofibres were prepared with average diameter sizes of 360±90nm, 470±240nm and 580±220nm, respectively, as assessed by SEM analysis. Vibrational and thermal analyses showed that upon blending in the SF/PLLA nanofibres, the crystallisation of PLLA was hindered by the presence of SF, which crystallized preferentially and underwent conformational changes that did not significantly change its prevailing β-sheet structure. The two components were thermodynamically compatible and the intermolecular interactions between them were revealed for the first time. Human keratinocytes were cultured on nanofibres and their viability and proliferation were determined. Preliminary in vitro tests showed that the incorporation of SF into the PLLA component enhanced cell adhesion and proliferation with respect to the unfunctionalised material. SF has been successfully used to modify the biomaterial properties and confirmed to be an efficient bioactive protein to mediate cell-biomaterial interaction.
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Affiliation(s)
- Paola Taddei
- Dipartimento di Scienze Biomediche e Neuromotorie, Università di Bologna, Via Belmeloro 8/2, 40126 Bologna, Italy.
| | - Silvia Tozzi
- Dipartimento di Scienze Biomediche e Neuromotorie, Università di Bologna, Via Belmeloro 8/2, 40126 Bologna, Italy
| | - Giampaolo Zuccheri
- Dipartimento di Farmacia e Biotecnologie e Centro Interdipartimentale di Ricerca Industriale Scienze della Vita e Tecnologie per la Salute, Università di Bologna, Via Irnerio 48, 40126 Bologna, Italy; Centro S3, Istituto Nanoscienze, Consiglio Nazionale delle Ricerche; Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali, Italy
| | - Simona Martinotti
- Dipartimento di Scienze e Innovazione Tecnologica, DiSIT, Università del Piemonte Orientale, viale Teresa Michel 11, 15121 Alessandria, Italy
| | - Elia Ranzato
- Dipartimento di Scienze e Innovazione Tecnologica, DiSIT, Università del Piemonte Orientale, viale Teresa Michel 11, 15121 Alessandria, Italy
| | - Valeria Chiono
- Dipartimento di Ingegneria Meccanica e Aerospaziale, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
| | - Irene Carmagnola
- Dipartimento di Ingegneria Meccanica e Aerospaziale, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy
| | - Masuhiro Tsukada
- Division of Applied Biology, Faculty of Textile Science and Technology, Shinshu University, 3-15-1, Tokida, Ueda, Nagano 386-8567, Japan
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42
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Gao Y, Yi T, Shinoka T, Lee YU, Reneker DH, Breuer CK, Becker ML. Pilot Mouse Study of 1 mm Inner Diameter (ID) Vascular Graft Using Electrospun Poly(ester urea) Nanofibers. Adv Healthc Mater 2016; 5:2427-36. [PMID: 27390286 PMCID: PMC5951289 DOI: 10.1002/adhm.201600400] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Revised: 05/30/2016] [Indexed: 12/13/2022]
Abstract
An off-the-shelf, small diameter tissue engineered vascular graft (TEVG) would be transformative to surgeons in multiple subspecialties. Herein, the results of a small diameter (ID ≈ 1 mm) vascular graft constructed from resorbable, amino acid-based poly(ester urea) (PEU) are reported. Electrospun PEU grafts of two different wall thicknesses (type A: 250 μm; type B: 350 μm) are implanted as abdominal infra-renal aortic grafts in a severe combined immune deficient/beige mouse model and evaluated for vessel remodeling over one year. Significantly, the small diameter TEVG does not rupture or lead to acute thrombogenic events during the intervals tested. The pilot TEVG in vivo shows long-term patency and extensive tissue remodeling with type A grafts. Extensive tissue remodeling in type A grafts leads to the development of well-circumscribed neovessels with an endothelial inner lining, a neointima containing smooth muscle cells. However, due to slow degradation of the PEU scaffold materials in vivo, the grafts remain after one year. The type B grafts, which have 350 μm thick walls, experience occlusion over the one year interval due to intimal hyperplasia. This study affords significant findings that will guide the design of future generations of small diameter vascular grafts.
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Affiliation(s)
- Yaohua Gao
- Department of Polymer Science, The University of Akron, Akron, OH, 44325, USA
| | - Tai Yi
- Department of Surgery, Nationwide Children's Hospital, Columbus, OH, 43205, USA
| | - Toshiharu Shinoka
- Department of Surgery, Nationwide Children's Hospital, Columbus, OH, 43205, USA
| | - Yong Ung Lee
- Department of Surgery, Nationwide Children's Hospital, Columbus, OH, 43205, USA
| | - Darrell H Reneker
- Department of Polymer Science, The University of Akron, Akron, OH, 44325, USA
| | | | - Matthew L Becker
- Department of Polymer Science, The University of Akron, Akron, OH, 44325, USA.
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Liu H, Liu W, Luo B, Wen W, Liu M, Wang X, Zhou C. Electrospun composite nanofiber membrane of poly( l -lactide) and surface grafted chitin whiskers: Fabrication, mechanical properties and cytocompatibility. Carbohydr Polym 2016; 147:216-225. [DOI: 10.1016/j.carbpol.2016.03.096] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Revised: 03/29/2016] [Accepted: 03/30/2016] [Indexed: 11/16/2022]
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Zhu J, Luo J, Zhao X, Gao J, Xiong J. Electrospun homogeneous silk fibroin/poly (ɛ-caprolactone) nanofibrous scaffolds by addition of acetic acid for tissue engineering. J Biomater Appl 2016; 31:421-37. [DOI: 10.1177/0885328216659775] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
In this study, we investigated the phase separation phenomenon of silk fibroin/poly (ɛ-caprolactone) electrospinning solution to improve the performance of silk fibroin/poly (ɛ-caprolactone) electrospun nanofibers. It showed that phase separation does occur in just a few hours in the silk fibroin/poly (ɛ-caprolactone)/formic acid mixture solution. Acetic acid, small molecule nonsolvent for silk fibroin, was first introduced to silk fibroin/poly (ɛ-caprolactone)/formic acid solution, a homogeneous solution without separation for over several days was achieved after mixing for 5 h. The morphology and composition of the silk fibroin/poly (ɛ-caprolactone) and acetic acid-modified silk fibroin/poly (ɛ-caprolactone) fibrous scaffolds were examined by scanning electron microscopy, Fourier transform infrared spectroscopy and thermal gravimetric analyzer. Attachment and proliferation of mouse osteoblast MC3T3-E1 cells were tested by scanning electron microscopy and cytotoxity assay. The results indicated that the phase separation of silk fibroin/poly (ɛ-caprolactone) solution might led to inhomogeneous morphology and composition of the composite scaffolds, and the inhomogeneity of the silk fibroin/poly (ɛ-caprolactone) scaffolds with formic acid as solvent had a remarkable difference on cell adhesion and proliferation. In contrast, there was no significant difference among the silk fibroin/poly (ɛ-caprolactone) scaffolds with formic acid/acetic acid as solvent because of their good consistency in fiber morphology and composition. These obtained silk fibroin/poly (ɛ-caprolactone) nanofibers had small average diameter of 190 ± 40 nm. The obtained results proved that this study provided a facile and effective approach to achieve compositionally homogeneous silk fibroin/poly (ɛ-caprolactone) scaffolds with formic acid as solvent for effective applications.
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Affiliation(s)
- Jiang Zhu
- College of Materials and Textile, Zhejiang Sci-Tech University, People’s Republic of China
| | - Jingjing Luo
- College of Materials and Textile, Zhejiang Sci-Tech University, People’s Republic of China
- College of Life Sciences, Zhejiang Sci-Tech University, People’s Republic of China
| | - Xingyan Zhao
- College of Materials and Textile, Zhejiang Sci-Tech University, People’s Republic of China
| | - Junjiu Gao
- College of Materials and Textile, Zhejiang Sci-Tech University, People’s Republic of China
| | - Jie Xiong
- College of Materials and Textile, Zhejiang Sci-Tech University, People’s Republic of China
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Zhejiang Sci-Tech University, People’s Republic of China
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Vaikkath D, Anitha R, Sumathy B, Nair PD. A simple and effective method for making multipotent/multilineage scaffolds with hydrophilic nature without any postmodification/treatment. Colloids Surf B Biointerfaces 2016; 141:112-119. [DOI: 10.1016/j.colsurfb.2015.12.041] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Revised: 12/18/2015] [Accepted: 12/19/2015] [Indexed: 10/22/2022]
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Mallick SP, Pal K, Rastogi A, Srivastava P. Evaluation of poly(L-lactide) and chitosan composite scaffolds for cartilage tissue regeneration. Des Monomers Polym 2016. [DOI: 10.1080/15685551.2015.1136535] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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47
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Du Y, Gao XQ, Wang ZY, Jin D, Tong S, Wang XK. Construction and Characterization of Three-Dimensional Silk Fibroin-Gelatin Scaffolds. J HARD TISSUE BIOL 2016. [DOI: 10.2485/jhtb.25.269] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Yang Du
- Department of Oral and Maxillofacial Surgery, School of Stomatology, China Medical University
| | - Xiu-qiu Gao
- Department of Oral and Maxillofacial Surgery, School of Stomatology, China Medical University
| | - Zhi-ying Wang
- Department of Oral and Maxillofacial Surgery, School of Stomatology, China Medical University
| | - Ding Jin
- Department of Oral and Maxillofacial Surgery, School of Stomatology, China Medical University
| | - Shuang Tong
- Department of Oral and Maxillofacial Surgery, School of Stomatology, China Medical University
| | - Xu-kai Wang
- Department of Oral and Maxillofacial Surgery, School of Stomatology, China Medical University
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48
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Gao Y, Childers EP, Becker ML. l-Leucine-Based Poly(ester urea)s for Vascular Tissue Engineering. ACS Biomater Sci Eng 2015; 1:795-804. [DOI: 10.1021/acsbiomaterials.5b00168] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yaohua Gao
- Department of Polymer Science and ‡Department of
Biomedical Engineering, The University of Akron, Akron, Ohio 44325, United States
| | - Erin P. Childers
- Department of Polymer Science and ‡Department of
Biomedical Engineering, The University of Akron, Akron, Ohio 44325, United States
| | - Matthew L. Becker
- Department of Polymer Science and ‡Department of
Biomedical Engineering, The University of Akron, Akron, Ohio 44325, United States
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49
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Chaparro FJ, Matusicky ME, Allen MJ, Lannutti JJ. Biomimetic microstructural reorganization during suture retention strength evaluation of electrospun vascular scaffolds. J Biomed Mater Res B Appl Biomater 2015; 104:1525-1534. [PMID: 26256447 DOI: 10.1002/jbm.b.33493] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Revised: 05/29/2015] [Accepted: 07/02/2015] [Indexed: 11/12/2022]
Abstract
Suture retention strength (SRS) is commonly used as a measure the ability of sutures to adhere implants to surrounding tissue. While SRS is widely employed, surprisingly its effects on graft microstructure have not been characterized. This is particularly germane to the broad utilization of electrospun implants in tissue engineering. These implants need to retain their initial nanoscale topography while simultaneously preserving clinically critical mechanical properties. We examined the suture-driven microstructural deformation of polycaprolactone electrospun to form both square and tubular SRS samples. The impact of fiber orientation (generally parallel or random orientation, orthogonally aligned) on the SRS of these vascular tissue equivalents was analyzed and compared to native and decellularized porcine vasculature. The initial state of the fiber clearly dictates the overall efficiency of scaffold utilization. SRS values for as-spun fibers at a thickness of 300 μm were found to be in the range of 1.59-4.78 N for the three orientations. Unexpectedly, random fibers provided the optimal SRS values based on both resistance to suture motion and the percentage of scaffold involvement. A "V-shaped" failure morphology is observed for both electrospun scaffolds and native tissue during SRS testing. Post-test fiber alignment in the tensile direction was visible in all initial fiber orientations similar to that of native tissue. These findings are significant as they allow us to employ new, counterintuitive biomimetic design criteria for nanofiber-based scaffolds in which reliable mechanical integration with the surrounding tissues via suture-based methods is important. © 2015 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 104B: 1525-1534, 2016.
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Affiliation(s)
- Francisco J Chaparro
- Department of Materials Science and Engineering, The Ohio State University, Columbus, Ohio, 43210.
| | - Michelle E Matusicky
- Department of Veterinary Clinical Sciences, The Ohio State University, Columbus, Ohio, 43210
| | - Matthew J Allen
- Department of Veterinary Medicine, University of Cambridge, Cambridge, UK
| | - John J Lannutti
- Department of Materials Science and Engineering, The Ohio State University, Columbus, Ohio, 43210
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Kim MK, Lee JY, Oh H, Song DW, Kwak HW, Yun H, Um IC, Park YH, Lee KH. Effect of shear viscosity on the preparation of sphere-like silk fibroin microparticles by electrospraying. Int J Biol Macromol 2015; 79:988-95. [DOI: 10.1016/j.ijbiomac.2015.05.040] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2014] [Revised: 05/20/2015] [Accepted: 05/22/2015] [Indexed: 01/06/2023]
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