51
|
Gniesmer S, Brehm R, Hoffmann A, de Cassan D, Menzel H, Hoheisel AL, Glasmacher B, Willbold E, Reifenrath J, Wellmann M, Ludwig N, Tavassol F, Zimmerer R, Gellrich NC, Kampmann A. In vivo analysis of vascularization and biocompatibility of electrospun polycaprolactone fibre mats in the rat femur chamber. J Tissue Eng Regen Med 2019; 13:1190-1202. [PMID: 31025510 PMCID: PMC6771623 DOI: 10.1002/term.2868] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Revised: 04/12/2019] [Accepted: 04/15/2019] [Indexed: 12/12/2022]
Abstract
In orthopaedic medicine, connective tissues are often affected by traumatic or degenerative injuries, and surgical intervention is required. Rotator cuff tears are a common cause of shoulder pain and disability among adults. The development of graft materials for bridging the gap between tendon and bone after chronic rotator cuff tears is essentially required. The limiting factor for the clinical success of a tissue engineering construct is a fast and complete vascularization of the construct. Otherwise, immigrating cells are not able to survive for a longer period of time, resulting in the failure of the graft material. The femur chamber allows the observation of microhaemodynamic parameters inside implants located in close vicinity to the femur in repeated measurements in vivo. We compared a porous polymer patch (a commercially available porous polyurethane‐based scaffold from Biomerix™) with electrospun polycaprolactone (PCL) fibre mats and chitosan (CS)‐graft‐PCL modified electrospun PCL (CS‐g‐PCL) fibre mats in vivo. By means of intravital fluorescence microscopy, microhaemodynamic parameters were analysed repetitively over 20 days at intervals of 3 to 4 days. CS‐g‐PCL modified fibre mats showed a significantly increased vascularization at Day 10 compared with Day 6 and at Day 14 compared with the porous polymer patch and the unmodified PCL fibre mats at the same day. These results could be verified by histology. In conclusion, a clear improvement in terms of vascularization and biocompatibility is achieved by graft‐copolymer modification compared with the unmodified material.
Collapse
Affiliation(s)
- Sarah Gniesmer
- Department of Oral and Maxillofacial Surgery, Hannover Medical School, Hannover, Germany.,NIFE-Lower Saxony Centre for Biomedical Engineering, Implant Research and Development, Hannover, Germany
| | - Ralph Brehm
- Institute for Anatomy, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Andrea Hoffmann
- NIFE-Lower Saxony Centre for Biomedical Engineering, Implant Research and Development, Hannover, Germany.,Department of Orthopedic Surgery, Laboratory for Biomechanics and Biomaterials, Graded Implants and Regenerative Strategies, Hannover Medical School, Hannover, Germany
| | - Dominik de Cassan
- Institute for Technical Chemistry, University of Technology, Braunschweig, Germany
| | - Henning Menzel
- Institute for Technical Chemistry, University of Technology, Braunschweig, Germany
| | - Anna-Lena Hoheisel
- NIFE-Lower Saxony Centre for Biomedical Engineering, Implant Research and Development, Hannover, Germany.,Institute for Multiphase Processes, Leibniz University of Hannover, Hannover, Germany
| | - Birgit Glasmacher
- NIFE-Lower Saxony Centre for Biomedical Engineering, Implant Research and Development, Hannover, Germany.,Institute for Multiphase Processes, Leibniz University of Hannover, Hannover, Germany
| | - Elmar Willbold
- NIFE-Lower Saxony Centre for Biomedical Engineering, Implant Research and Development, Hannover, Germany.,Department of Orthopedic Surgery, Hannover Medical School, Hannover, Germany
| | - Janin Reifenrath
- NIFE-Lower Saxony Centre for Biomedical Engineering, Implant Research and Development, Hannover, Germany.,Department of Orthopedic Surgery, Hannover Medical School, Hannover, Germany
| | - Mathias Wellmann
- Department of Orthopedic Surgery, Hannover Medical School, Hannover, Germany
| | - Nils Ludwig
- Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - Frank Tavassol
- Department of Oral and Maxillofacial Surgery, Hannover Medical School, Hannover, Germany
| | - Ruediger Zimmerer
- Department of Oral and Maxillofacial Surgery, Hannover Medical School, Hannover, Germany
| | - Nils-Claudius Gellrich
- Department of Oral and Maxillofacial Surgery, Hannover Medical School, Hannover, Germany
| | - Andreas Kampmann
- Department of Oral and Maxillofacial Surgery, Hannover Medical School, Hannover, Germany.,NIFE-Lower Saxony Centre for Biomedical Engineering, Implant Research and Development, Hannover, Germany
| |
Collapse
|
52
|
Tandon B, Kamble P, Olsson RT, Blaker JJ, Cartmell SH. Fabrication and Characterisation of Stimuli Responsive Piezoelectric PVDF and Hydroxyapatite-Filled PVDF Fibrous Membranes. Molecules 2019; 24:E1903. [PMID: 31108899 PMCID: PMC6571942 DOI: 10.3390/molecules24101903] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 05/13/2019] [Accepted: 05/14/2019] [Indexed: 11/18/2022] Open
Abstract
Poly(vinylidene fluoride) has attracted interest from the biomaterials community owing to its stimuli responsive piezoelectric property and promising results for application in the field of tissue engineering. Here, solution blow spinning and electrospinning were employed to fabricate PVDF fibres and the variation in resultant fibre properties assessed. The proportion of piezoelectric β-phase in the solution blow spun fibres was higher than electrospun fibres. Fibre production rate was circa three times higher for solution blow spinning compared to electrospinning for the conditions explored. However, the solution blow spinning method resulted in higher fibre variability between fabricated batches. Fibrous membranes are capable of generating different cellular response depending on fibre diameter. For this reason, electrospun fibres with micron and sub-micron diameters were fabricated, along with successful inclusion of hydroxyapatite particles to fabricate stimuli responsive bioactive fibres.
Collapse
Affiliation(s)
- Biranche Tandon
- School of Materials, MSS Tower, The University of Manchester, Manchester M13 9PL, UK.
- Bio-Active Materials Group, School of Materials, MSS Tower, The University of Manchester, Manchester M13 9PL, UK.
| | - Prashant Kamble
- School of Materials, MSS Tower, The University of Manchester, Manchester M13 9PL, UK.
| | - Richard T Olsson
- Department of Fibre and Polymer Technology, School of Chemical Science and Engineering, KTH Royal Institute of Technology, Teknikringen 56, SE-10044 Stockholm, Sweden.
| | - Jonny J Blaker
- School of Materials, MSS Tower, The University of Manchester, Manchester M13 9PL, UK.
- Bio-Active Materials Group, School of Materials, MSS Tower, The University of Manchester, Manchester M13 9PL, UK.
| | - Sarah H Cartmell
- School of Materials, MSS Tower, The University of Manchester, Manchester M13 9PL, UK.
| |
Collapse
|
53
|
Hodge J, Quint C. The improvement of cell infiltration in an electrospun scaffold with multiple synthetic biodegradable polymers using sacrificial PEO microparticles. J Biomed Mater Res A 2019; 107:1954-1964. [PMID: 31033146 DOI: 10.1002/jbm.a.36706] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 03/03/2019] [Accepted: 03/20/2019] [Indexed: 01/29/2023]
Abstract
Electrospinning is a fabrication technique to generate three dimensional scaffolds with a fiber structure that imitates extracellular matrix for tissue engineering constructs. The versatile characteristics of the electrospinning process yields designer scaffolds made of biodegradable polymers or natural proteins with controllable fiber diameters, biodegradation, and mechanical properties. A limitation of conventional electrospun scaffolds is the dense fiber packing with low porosity that leads to poor cell infiltration. Electrospraying sacrificial polyethylene oxide (PEO) microparticles in combination with electrospun scaffolds are a method to increase porosity. We report the effectiveness of electrospraying PEO microparticles to increase porosity of the most commonly used biodegradable polymers: polyglycolic acid (PGA), poly (lactic-co-glycolic) acid (PLGA), and polycaprolactone (PCL). The biodegradable polymer electrospun scaffolds with the sacrificial PEO microparticles were found to have improved cell proliferation and infiltration with human fibroblasts compared to conventional electrospun scaffolds. The mechanical properties of the more robust PGA and PLGA had minor changes, but the more elastic PCL was observed to be weaker and less stiff after the removal of the PEO microparticles. Therefore, this study found PEO microparticles can increase porosity and cell infiltration with stable mechanical properties for a wide variety of biodegradable polymers in electrospun scaffolds.
Collapse
Affiliation(s)
- Jacob Hodge
- Department of Surgery, University of Kansas Medical Center, Kansas City, Kansas
| | - Clay Quint
- Department of Surgery, University of Kansas Medical Center, Kansas City, Kansas
| |
Collapse
|
54
|
Eggshell Based Nano-Engineered Hydroxyapatite and Poly(lactic) Acid Electrospun Fibers as Potential Tissue Scaffold. Int J Biomater 2019; 2019:6762575. [PMID: 31186650 PMCID: PMC6521557 DOI: 10.1155/2019/6762575] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2018] [Accepted: 04/01/2019] [Indexed: 02/04/2023] Open
Abstract
Nanocomposite electrospun fibers were fabricated from poly(lactic) acid (PLA) and needle-like hydroxyapatite nanoparticles made from eggshells. The X-ray diffraction spectrum and the scanning electron micrograph showed that the hydroxyapatite particles are highly crystalline and are needle-liked in shape with diameters between 10 and 20 nm and lengths ranging from 100 to 200 nm. The microstructural, thermal, and mechanical properties of the electrospun fibers were characterized using scanning electron microscope (SEM), thermogravimetric analysis (TGA), dynamic scanning calorimetry (DSC), and tensile testing techniques. The SEM study showed that both pristine and PLA/EnHA fibers surfaces exhibited numerous pores and rough edges suitable for cell attachment. The presence of the rod-liked EnHA particles was found to increase thermal and mechanical properties of PLA fibers relative to pristine PLA fibers. The confocal optical images showed that osteoblast cells were found to attach on dense pristine PLA and PLA/HA-10 wt% fibers after 48 hours of incubation. The stained confocal optical images indicated the secretion of cytoplasmic extension linking adjoining nuclei after 96 hours of incubation. These findings showed that eggshell based nanohydroxyapatite and poly(lactic acid) fibers could be potential scaffold for tissue regeneration.
Collapse
|
55
|
Ding J, Zhang J, Li J, Li D, Xiao C, Xiao H, Yang H, Zhuang X, Chen X. Electrospun polymer biomaterials. Prog Polym Sci 2019. [DOI: 10.1016/j.progpolymsci.2019.01.002] [Citation(s) in RCA: 217] [Impact Index Per Article: 43.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
|
56
|
Varshney N, Sahi AK, Vajanthri KY, Poddar S, Balavigneswaran CK, Prabhakar A, Rao V, Mahto SK. Culturing melanocytes and fibroblasts within three-dimensional macroporous PDMS scaffolds: towards skin dressing material. Cytotechnology 2019; 71:287-303. [PMID: 30603924 PMCID: PMC6368518 DOI: 10.1007/s10616-018-0285-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Accepted: 11/28/2018] [Indexed: 12/20/2022] Open
Abstract
In the present study, we propose a platform for topical wound dressing material using a polydimethylsiloxane (PDMS) scaffold in order to enhance the skin healing process. In vitro co-culture assessment of epidermal-origin mouse B16-F10 melanocyte cells and mouse L929 fibroblast cells in three-dimensional polymeric scaffolds has been carried out towards developing bio-stable, interconnected, highly macroporous, PDMS based tissue-engineered scaffolds, using the salt leaching method. To determine a suitable ratio of salt to PDMS pre-polymer in the scaffold, two different samples with ratios 2:1 and 3:1 [w/w], were fabricated. Effective pore sizes of both scaffolds were observed to lie in the desirable range of 152-165 μm. In addition, scaffolds were pre-coated with collagen and investigated as a podium for culturing the chosen cells (fibroblast and melanocyte cells). Experimental results demonstrate not only a high proliferative potential of the skin tissue-specific cells within the fabricated PDMS based scaffolds but also confirm the presence of several other essential attributes such as high interconnectivity, optimum porosity, excellent mechanical strength, gaseous permeability, promising cell compatibility, water absorption capability and desired surface wettability. Therefore, scaffolds facilitate a high degree of cellular adhesion while providing a microenvironment necessary for optimal cellular infiltration and viability. Thus, the outcomes suggest that PDMS based macroporous scaffold can be used as a potential candidate for skin dressing material. In addition, the fabricated PDMS scaffolds may also be exploited for a plethora of other applications in tissue engineering and drug delivery.
Collapse
Affiliation(s)
- Neelima Varshney
- Tissue Engineering and Biomicrofluidics Laboratory, School of Biomedical Engineering, Indian Institute of Technology (Banaras Hindu University), Varanasi, 221005, India
| | - Ajay Kumar Sahi
- Tissue Engineering and Biomicrofluidics Laboratory, School of Biomedical Engineering, Indian Institute of Technology (Banaras Hindu University), Varanasi, 221005, India
| | - Kiran Yellappa Vajanthri
- Tissue Engineering and Biomicrofluidics Laboratory, School of Biomedical Engineering, Indian Institute of Technology (Banaras Hindu University), Varanasi, 221005, India
| | - Suruchi Poddar
- Tissue Engineering and Biomicrofluidics Laboratory, School of Biomedical Engineering, Indian Institute of Technology (Banaras Hindu University), Varanasi, 221005, India
| | - Chelladurai Karthikeyan Balavigneswaran
- Tissue Engineering and Biomicrofluidics Laboratory, School of Biomedical Engineering, Indian Institute of Technology (Banaras Hindu University), Varanasi, 221005, India
| | - Arumugam Prabhakar
- Academy of Scientific and Innovative Research (AcSIR), Anusandhan Bhavan, 2 Rafi Marg, New Delhi, 110001, India
- CSIR-Institute of Genomics and Integrative Biology, Mathura Road, New Delhi, 110025, India
| | - Vivek Rao
- Academy of Scientific and Innovative Research (AcSIR), Anusandhan Bhavan, 2 Rafi Marg, New Delhi, 110001, India
- CSIR-Institute of Genomics and Integrative Biology, Mathura Road, New Delhi, 110025, India
| | - Sanjeev Kumar Mahto
- Tissue Engineering and Biomicrofluidics Laboratory, School of Biomedical Engineering, Indian Institute of Technology (Banaras Hindu University), Varanasi, 221005, India.
- Centre for Advanced Biomaterials and Tissue Engineering, Indian Institute of Technology (Banaras Hindu University), Varanasi, 221005, India.
| |
Collapse
|
57
|
Andrade TM, Mello DCR, Elias CMV, Abdala JMA, Silva E, Vasconcellos LMR, Tim CR, Marciano FR, Lobo AO. In vitro and in vivo evaluation of rotary-jet-spun poly(ɛ-caprolactone) with high loading of nano-hydroxyapatite. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2019; 30:19. [PMID: 30689050 DOI: 10.1007/s10856-019-6222-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2018] [Accepted: 01/10/2019] [Indexed: 06/09/2023]
Abstract
Herein, poly(ɛ-caprolactone) (PCL) mats with different amounts of nanohydroxyapatite (nHAp) were produced using rotary-jet spinning (RJS) and evaluated in vitro and in vivo. The mean fiber diameters of the PCL, PCL/nHAp (3%), PCL/nHAp (5%), and PCL/nHAp (20%) scaffolds were 1847 ± 1039, 1817 ± 1044, 1294 ± 4274, and 845 ± 248 nm, respectively. Initially, all the scaffolds showed superhydrophobic behavior (contact angle around of 140oC), but decreased to 80° after 30 min. All the produced scaffolds were bioactive after soaking in simulated body fluid, especially PCL/nHAp (20%). The crystallinity of the PCL scaffolds decreased progressively from 46 to 21% after incorporation of 20% nHAp. In vitro and in vivo cytotoxicity were investigated, as well as the mats' ability to reduce bacteria biofilm formation. In vitro cellular differentiation was evaluated by measuring alkaline phosphatase activity and mineralized nodule formation. Overall, we identified the total ideal amount of nHAp to incorporate in PCL mats, which did not show in vitro or in vivo cytotoxicity and promoted lamellar bone formation independently of the amounts of nHAp. The scaffolds with nHAp showed reduced bacterial proliferation. Alizarin red staining was higher in materials associated with nHAp than in those without nHAp. Overall, this study demonstrates that PCL with nHAp prepared by RJS merits further evaluation for orthopedic applications.
Collapse
Affiliation(s)
- Telmo M Andrade
- Instituto Científico e Tecnológico, Universidade Brasil, Itaquera, São Paulo, Brazil
| | - Daphne C R Mello
- Departamento de Biociência e Diagnóstico Oral, Instituto de Ciência e Tecnologia, Universidade Estadual de São Paulo, São Jose dos Campos, São Paulo, Brazil
| | - Conceição M V Elias
- Instituto Científico e Tecnológico, Universidade Brasil, Itaquera, São Paulo, Brazil
| | - Julia M A Abdala
- Instituto de Pesquisa e Desenvolvimento, Universidade do Vale do Paraiba, São Jose dos Campos, São Paulo, Brazil
| | - Edmundo Silva
- Departamento de Biociência e Diagnóstico Oral, Instituto de Ciência e Tecnologia, Universidade Estadual de São Paulo, São Jose dos Campos, São Paulo, Brazil
| | - Luana M R Vasconcellos
- Departamento de Biociência e Diagnóstico Oral, Instituto de Ciência e Tecnologia, Universidade Estadual de São Paulo, São Jose dos Campos, São Paulo, Brazil
| | - Carla R Tim
- Instituto Científico e Tecnológico, Universidade Brasil, Itaquera, São Paulo, Brazil
| | - Fernanda R Marciano
- Instituto Científico e Tecnológico, Universidade Brasil, Itaquera, São Paulo, Brazil
| | - Anderson O Lobo
- Instituto Científico e Tecnológico, Universidade Brasil, Itaquera, São Paulo, Brazil.
- LIMAV-Laboratório Interdisciplinar de Materiais Avançados, PPGCM-Programa de Pós-graduação em Ciência e Engenharia de Materiais, UFPI-Universidade Federal do Piauí, Teresina, Piauí, Brazil.
| |
Collapse
|
58
|
Electrospun Polycaprolactone Fibrous Membranes Containing Ag, TiO₂ and Na₂Ti₆O 13 Particles for Potential Use in Bone Regeneration. MEMBRANES 2019; 9:membranes9010012. [PMID: 30634630 PMCID: PMC6359384 DOI: 10.3390/membranes9010012] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/01/2018] [Revised: 12/19/2018] [Accepted: 01/03/2019] [Indexed: 11/17/2022]
Abstract
Biocompatible and biodegradable membrane treatments for regeneration of bone are nowadays a promising solution in the medical field. Bioresorbable polymers are extensively used in membrane elaboration, where polycaprolactone (PCL) is used as base polymer. The goal of this work was to improve electrospun membranes’ biocompatibility and antibacterial properties by adding micro- and nanoparticles such as Ag, TiO2 and Na2Ti6O13. Micro/nanofiber morphologies of the obtained membranes were characterized by X-ray diffraction, Fourier-transform infrared spectroscopy, differential scanning calorimetry, scanning electron microscopy, energy-dispersive X-ray spectroscopy and a tensile test. Also, for this study optical microscopy was used to observe DAPI-stained cells. Membranes of the different systems were electrospun to an average diameter of 1.02–1.76 μm. To evaluate the biological properties, cell viability was studied by growing NIH/3T3 cells on the microfibers. PCL/TiO2 strength was enhanced from 0.6 MPa to 6.3 MPa in comparison with PCL without particles. Antibacterial activity was observed in PCL/TiO2 and PCL/Na2Ti6O13 electrospun membranes using Staphylococcus aureus bacteria. Bioactivity of the membranes was confirmed with simulated body fluid (SBF) treatment. From this study, the ceramic particles TiO2 and Na2Ti6O13, combined with a PCL matrix with micro/nanoparticles, enhanced cell proliferation, adhesion and antibacterial properties. The electrospun composite with Na2Ti6O13 can be considered viable for tissue regenerative processes.
Collapse
|
59
|
Sun F, Chen J, Jin S, Wang J, Man Y, Li J, Zou Q, Li Y, Zuo Y. Development of biomimetic trilayer fibrous membranes for guided bone regeneration. J Mater Chem B 2019; 7:665-675. [PMID: 32254799 DOI: 10.1039/c8tb02435a] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
in order to build fibrous bone tissue scaffolds for guided bone regeneration and to mimic the trilayer structure and the multifunctional properties of the natural periosteum, we fabricated two fibrous trilayer membranes by conjugate electrospinning technology, in which poly(ε-caprolactone) (PCL) fiber was designed as an outer layer, the mixed fibers of PCL and polyurethane (co-PUPCL) as the interlayer, and degradable polyurethane fibers with or without nano-hydroxyapatite (n-HA) as the inner layer (PUHA or PU). The microstructure and characteristics of the trilayer membranes were evaluated and different monolayer fibers were fabricated as the contrast samples. The tensile strength values of each layer increased from the inner layer to the outer layer in the designed structure, while the step-by-step electrospinning method produced good adhesion of different layers. Furthermore, the degradable properties and hydrophilicity of the layers changed with dissymmetric fibrous structures. Cell proliferation assay and cell morphology observation indicated that the PUHA inner fibrous layer exhibited better cell attachment and proliferation than PU. In addition, the osteogenicity of the PUHA fibrous layer has been attested through protein expression by the differentiation of rat mesenchymal stem cells (rMSCs) into the osteogenic lineage. Cell infiltration testing on the two sides of the trilayer membranes in vitro and in vivo showed that the inner layer had good cellular penetration deep into the scaffolds, whereas the cells were barred by the outer layer. We have developed a trilayer structured membrane with different polymer fibers to replicate the natural periosteum by improving functional outcomes, which is a promising fibrous scaffold for clinical use in the repair of destroyed bone.
Collapse
Affiliation(s)
- Fuhua Sun
- Research Center for Nano Biomaterials, Analytical & Testing Center, Sichuan University, Chengdu 610064, P. R. China.
| | | | | | | | | | | | | | | | | |
Collapse
|
60
|
Parmaksiz M, Elçin AE, Elçin YM. Decellularized bovine small intestinal submucosa-PCL/hydroxyapatite-based multilayer composite scaffold for hard tissue repair. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 94:788-797. [DOI: 10.1016/j.msec.2018.10.011] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Revised: 09/14/2018] [Accepted: 10/02/2018] [Indexed: 12/13/2022]
|
61
|
Wang S, Li J, Zhou Z, Zhou S, Hu Z. Micro-/Nano-Scales Direct Cell Behavior on Biomaterial Surfaces. Molecules 2018; 24:E75. [PMID: 30587800 PMCID: PMC6337445 DOI: 10.3390/molecules24010075] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Revised: 12/10/2018] [Accepted: 12/20/2018] [Indexed: 01/22/2023] Open
Abstract
Cells are the smallest living units of a human body's structure and function, and their behaviors should not be ignored in human physiological and pathological metabolic activities. Each cell has a different scale, and presents distinct responses to specific scales: Vascular endothelial cells may obtain a normal function when regulated by the 25 µm strips, but de-function if the scale is removed; stem cells can rapidly proliferate on the 30 nm scales nanotubes surface, but stop proliferating when the scale is changed to 100 nm. Therefore, micro and nano scales play a crucial role in directing cell behaviors on biomaterials surface. In recent years, a series of biomaterials surface with micro and/or nano scales, such as micro-patterns, nanotubes and nanoparticles, have been developed to control the target cell behavior, and further enhance the surface biocompatibility. This contribution will introduce the related research, and review the advances in the micro/nano scales for biomaterials surface functionalization.
Collapse
Affiliation(s)
- Shuo Wang
- School of Material Science and Engineering & Henan Key Laboratory of Advanced Magnesium Alloy & Key Laboratory of materials processing and mold technology (Ministry of Education), Zhengzhou University, Zhengzhou 450001, China.
| | - Jingan Li
- School of Material Science and Engineering & Henan Key Laboratory of Advanced Magnesium Alloy & Key Laboratory of materials processing and mold technology (Ministry of Education), Zhengzhou University, Zhengzhou 450001, China.
| | - Zixiao Zhou
- School of Material Science and Engineering & Henan Key Laboratory of Advanced Magnesium Alloy & Key Laboratory of materials processing and mold technology (Ministry of Education), Zhengzhou University, Zhengzhou 450001, China.
| | - Sheng Zhou
- School of Material Science and Engineering & Henan Key Laboratory of Advanced Magnesium Alloy & Key Laboratory of materials processing and mold technology (Ministry of Education), Zhengzhou University, Zhengzhou 450001, China.
| | - Zhenqing Hu
- School of Material Science and Engineering & Henan Key Laboratory of Advanced Magnesium Alloy & Key Laboratory of materials processing and mold technology (Ministry of Education), Zhengzhou University, Zhengzhou 450001, China.
| |
Collapse
|
62
|
Novel polysaccharide hybrid scaffold loaded with hydroxyapatite: Fabrication, bioactivity, and in vivo study. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 93:1-11. [DOI: 10.1016/j.msec.2018.07.054] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2017] [Revised: 06/02/2018] [Accepted: 07/20/2018] [Indexed: 02/05/2023]
|
63
|
Valentim RMB, Andrade SMC, Dos Santos MEM, Santos AC, Pereira VS, Dos Santos IP, Dias CGBT, Dos Reis MAL. Composite Based on Biphasic Calcium Phosphate (HA/β-TCP) and Nanocellulose from the Açaí Tegument. MATERIALS 2018; 11:ma11112213. [PMID: 30412992 PMCID: PMC6266682 DOI: 10.3390/ma11112213] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Revised: 09/29/2018] [Accepted: 10/01/2018] [Indexed: 12/28/2022]
Abstract
The use of lignocellulosic remnants of the açaí agro-business will benefit the environment with a precursor material for biomedical applications. Nanocellulose (NC) allows the biomimetic growth of biphasic ceramics on its surface, with characteristics compatible with bone tissue, including bioactive properties and biocompatibility. In this study, the composites were obtained from açaí tegument (Euterpe Oleracea Mart.) NC using acid hydrolysis. The characterization performed by scanning electron microscopy showed the characteristic crystals of hydroxyapatite (HA) and calcium triphosphate (β-TCP) based on the results of X-ray diffraction, with the peak at 22°, showing the NC nucleation of HA and peak at 17° showing tricalcium phosphate (β-TCP). Fourier transform infrared spectroscopy confirmed the presence of O-H at 3400 cm−1 and C-H at 2900 cm−1, which is characteristic of cellulose; peaks were also observed at 1609 cm−1, verifying the reduction in lignin content. Groups PO4−3 at approximately 1070 cm−1, P-OH at 910–1040 cm−1, and HCO3− at 2450 cm−1 confirmed the formation of HA and β-TCP. The zeta potential had a range of −11 ± 23.8 mV related to particle size, which had a range of 164.2 × 10−9–4748 × 10−9 m.
Collapse
Affiliation(s)
- Rachel M B Valentim
- Post-Graduation in Natural Resources Engineering of the Amazon-PRODERNA, Federal University of Pará, Belém, Pará 66075-110, Brazil.
| | - Sabina M C Andrade
- Federal Institute of Education, Science and Technology of Pará-IFPA, Campus Belém, Pará 66093-020, Brazil.
| | - Maria E M Dos Santos
- Post-Graduation in Mechanical Engineering-PPGEM, Federal University of Pará, Belém, Pará 66075-110, Brazil.
| | - Aline C Santos
- Post-Graduation in Mechanical Engineering-PPGEM, Federal University of Pará, Belém, Pará 66075-110, Brazil.
| | - Victor S Pereira
- Post-Graduation in Mechanical Engineering-PPGEM, Federal University of Pará, Belém, Pará 66075-110, Brazil.
| | - Izael P Dos Santos
- Post-Graduation in Mechanical Engineering-PPGEM, Federal University of Pará, Belém, Pará 66075-110, Brazil.
| | - Carmen G B T Dias
- Post-Graduation in Mechanical Engineering-PPGEM, Federal University of Pará, Belém, Pará 66075-110, Brazil.
| | - Marcos A L Dos Reis
- Post-Graduation in Natural Resources Engineering of the Amazon-PRODERNA, Federal University of Pará, Belém, Pará 66075-110, Brazil.
| |
Collapse
|
64
|
Lee J, Kim G. Three-Dimensional Hierarchical Nanofibrous Collagen Scaffold Fabricated Using Fibrillated Collagen and Pluronic F-127 for Regenerating Bone Tissue. ACS APPLIED MATERIALS & INTERFACES 2018; 10:35801-35811. [PMID: 30260631 DOI: 10.1021/acsami.8b14088] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
It is well known that a nanoscale fibrous structure can provide a unique stage for encouraging reasonable cell activities including attachment and proliferation owing to its similar topological structure to the extracellular matrix. Hence, the structure has been widely applied in tissue regeneration. Type-I collagen has been typically used as a typical tissue regenerative material owing to its biocompatibility and abundance, although it has potential for antigenicity. In particular, collagen has been fabricated in two different forms, porous spongy and nanofibers. However, although the structures provided outstanding cellular activities, they exhibit disadvantages such as low cell migration capabilities in a spongy scaffold owing to the low degree of interconnected macropores and low processability in fabricating three-dimensional (3D) structures in an electrospun collagen scaffold. Hence, the fabrication of 3D nanofibrous collagen structures with interconnected macropores can be extremely challenging. In this work, we developed a 3D collagen scaffold consisting of multilayered nanofibrous struts fabricated using a 3D printing process and pluronic F-127 (PF-127), which is a thermoreversible polymer. After optimizing various processing conditions, we successfully achieved the 3D nanofibrous collagen mesh structure with fully interconnected macropores. A 3D-printed collagen scaffold that was fabricated using a low-temperature printing process was applied as a control. Through various analyses using physical properties (surface morphology, fibronectin absorption, mechanical properties, etc.) and cell activities using preosteoblasts (MC3T3-E1), we are convinced that the newly designed 3D nanofibrous collagen scaffold can be a new promising scaffold for bone tissue engineering.
Collapse
Affiliation(s)
- JiUn Lee
- Department of Biomechatronic Engineering, College of Biotechnology and Bioengineering , Sungkyunkwan University , Suwon 16419 , South Korea
| | - GeunHyung Kim
- Department of Biomechatronic Engineering, College of Biotechnology and Bioengineering , Sungkyunkwan University , Suwon 16419 , South Korea
| |
Collapse
|
65
|
Sattary M, Rafienia M, Khorasani MT, Salehi H. The effect of collector type on the physical, chemical, and biological properties of polycaprolactone/gelatin/nano-hydroxyapatite electrospun scaffold. J Biomed Mater Res B Appl Biomater 2018; 107:933-950. [PMID: 30199600 DOI: 10.1002/jbm.b.34188] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Revised: 05/22/2018] [Accepted: 06/12/2018] [Indexed: 11/09/2022]
Abstract
Electrospinning is considered a powerful method for the production of fibers in the nanoscale size. Small pore size results in poor cell infiltration, cell migration inhibition into scaffold pores and low oxygen diffusion. Electrospun polycaprolactone/gelatin/nano-hydroxyapatite (PCL/Gel/nHA) scaffolds were deposited into two types of fiber collectors (novel rotating disc and plate) to study fiber morphology, chemical, mechanical, hydrophilic, and biodegradation properties between each other. The proliferation and differentiation of MG-63 cells into the bone phenotype were determined using MTT method, alizarin red staining and alkaline phosphatase (ALP) activity. The rates for disc rotation were 50 and 100 rpm. The pore size measurement results indicated that the fibers produced by the disc rotation collector with speed rate 50 rpm have larger pores as compared to fibers produced by disc rotation at 100 rpm and flat plate collectors. A randomly structure with controlled pore size (38.65 ±0.33 μm) and lower fiber density, as compared to fibers collected by disc rotation with speed rate 100 rpm and flat plate collectors, was obtained. Fibers collected on the rotating disc with speed rate 50 rpm, were more hydrophilic due to larger pore size and therefore, faster infiltration of water into the scaffold and the rate of degradation was higher. These results demonstrate that PCL/Gel/nHA scaffolds made through a rotating disc collector at 50 rpm are more feasible to be used in bone tissue engineering applications due to appropriate pore size and increased adhesion and proliferation of cells, ALP activity and mineral deposits. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater 107B: 933-950, 2019.
Collapse
Affiliation(s)
- Mansoureh Sattary
- Department of Biomedical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Mohammad Rafienia
- Biosensor Research Center, Isfahan University of Medical Sciences, 81744*176, Isfahan, Iran
| | - Mohammad Taghi Khorasani
- Department of Biomaterial, Iran Polymer and Petrochemical Institute, PO Box 14965, 159, Tehran, Iran
| | - Hossein Salehi
- Department of Anatomical Sciences and Molecular Biology, School of Medicine, Isfahan University of Medical Sciences, 81744*176, Isfahan, Iran
| |
Collapse
|
66
|
Shirani K, Nourbakhsh MS, Rafienia M. Electrospun polycaprolactone/gelatin/bioactive glass nanoscaffold for bone tissue engineering. INT J POLYM MATER PO 2018. [DOI: 10.1080/00914037.2018.1482461] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Keyvan Shirani
- Faculty of New Sciences and Technologies, Semnan University, Semnan, Iran
| | - Mohammad Sadegh Nourbakhsh
- Department of Materials and Metallurgical Engineering, Central Administration of Semnan University, Semnan University, Semnan, Iran
| | - Mohammad Rafienia
- Biosensor Research Center, Department of Advanced Medical Technology, Isfahan University of Medical Sciences, Isfahan, Iran
| |
Collapse
|
67
|
Chen S, Li R, Li X, Xie J. Electrospinning: An enabling nanotechnology platform for drug delivery and regenerative medicine. Adv Drug Deliv Rev 2018; 132:188-213. [PMID: 29729295 DOI: 10.1016/j.addr.2018.05.001] [Citation(s) in RCA: 207] [Impact Index Per Article: 34.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 04/03/2018] [Accepted: 05/01/2018] [Indexed: 02/06/2023]
Abstract
Electrospinning provides an enabling nanotechnology platform for generating a rich variety of novel structured materials in many biomedical applications including drug delivery, biosensing, tissue engineering, and regenerative medicine. In this review article, we begin with a thorough discussion on the method of producing 1D, 2D, and 3D electrospun nanofiber materials. In particular, we emphasize on how the 3D printing technology can contribute to the improvement of traditional electrospinning technology for the fabrication of 3D electrospun nanofiber materials as drug delivery devices/implants, scaffolds or living tissue constructs. We then highlight several notable examples of electrospun nanofiber materials in specific biomedical applications including cancer therapy, guiding cellular responses, engineering in vitro 3D tissue models, and tissue regeneration. Finally, we finish with conclusions and future perspectives of electrospun nanofiber materials for drug delivery and regenerative medicine.
Collapse
|
68
|
Burton TP, Callanan A. A Non-woven Path: Electrospun Poly(lactic acid) Scaffolds for Kidney Tissue Engineering. Tissue Eng Regen Med 2018; 15:301-310. [PMID: 30603555 PMCID: PMC6171675 DOI: 10.1007/s13770-017-0107-5] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Revised: 11/15/2017] [Accepted: 12/03/2017] [Indexed: 01/26/2023] Open
Abstract
Chronic kidney disease is a major global health problem affecting millions of people; kidney tissue engineering provides an opportunity to better understand this disease, and has the capacity to provide a cure. Two-dimensional cell culture and decellularised tissue have been the main focus of this research thus far, but despite promising results these methods are not without their shortcomings. Polymer fabrication techniques such as electrospinning have the potential to provide a non-woven path for kidney tissue engineering. In this experiment we isolated rat primary kidney cells which were seeded on electrospun poly(lactic acid) scaffolds. Our results showed that the scaffolds were capable of sustaining a multi-population of kidney cells, determined by the presence of: aquaporin-1 (proximal tubules), aquaporin-2 (collecting ducts), synaptopodin (glomerular epithelia) and von Willebrand factor (glomerular endothelia cells), viability of cells appeared to be unaffected by fibre diameter. The ability of electrospun polymer scaffold to act as a conveyor for kidney cells makes them an ideal candidate within kidney tissue engineering; the non-woven path provides benefits over decellularised tissue by offering a high morphological control as well as providing superior mechanical properties with degradation over a tuneable time frame.
Collapse
Affiliation(s)
- Todd P. Burton
- Institute of Bioengineering, School of Engineering, The University of Edinburgh, Faraday Building, The King’s Buildings, Mayfield Road, Edinburgh, EH9 3JL UK
| | - Anthony Callanan
- Institute of Bioengineering, School of Engineering, The University of Edinburgh, Faraday Building, The King’s Buildings, Mayfield Road, Edinburgh, EH9 3JL UK
| |
Collapse
|
69
|
Ismail HM, Zamani S, Elrayess MA, Kafienah W, Younes HM. New Three-Dimensional Poly(decanediol-co-tricarballylate) Elastomeric Fibrous Mesh Fabricated by Photoreactive Electrospinning for Cardiac Tissue Engineering Applications. Polymers (Basel) 2018; 10:polym10040455. [PMID: 30966490 PMCID: PMC6415264 DOI: 10.3390/polym10040455] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Revised: 04/15/2018] [Accepted: 04/17/2018] [Indexed: 02/07/2023] Open
Abstract
Reactive electrospinning is capable of efficiently producing in situ crosslinked scaffolds resembling the natural extracellular matrix with tunable characteristics. In this study, we aimed to synthesize, characterize, and investigate the in vitro cytocompatibility of electrospun fibers of acrylated poly(1,10-decanediol-co-tricarballylate) copolymer prepared utilizing the photoreactive electrospinning process with ultraviolet radiation for crosslinking, to be used for cardiac tissue engineering applications. Chemical, thermal, and morphological characterization confirmed the successful synthesis of the polymer used for production of the electrospun fibrous scaffolds with more than 70% porosity. Mechanical testing confirmed the elastomeric nature of the fibers required to withstand cardiac contraction and relaxation. The cell viability assay showed no significant cytotoxicity of the fibers on cultured cardiomyoblasts and the cell-scaffolds interaction study showed a significant increase in cell attachment and growth on the electrospun fibers compared to the reference. This data suggests that the newly synthesized fibrous scaffold constitutes a promising candidate for cardiac tissue engineering applications.
Collapse
Affiliation(s)
- Hesham M Ismail
- Pharmaceutics & Polymeric Drug Delivery Research Laboratory, College of Pharmacy, Qatar University, P.O. Box 2713, Doha, Qatar.
| | - Somayeh Zamani
- Pharmaceutics & Polymeric Drug Delivery Research Laboratory, College of Pharmacy, Qatar University, P.O. Box 2713, Doha, Qatar.
| | | | - Wael Kafienah
- Faculty of Biomedical Sciences, School of Cellular and Molecular Medicine, University of Bristol, Bristol BS8 1TH, UK.
| | - Husam M Younes
- Pharmaceutics & Polymeric Drug Delivery Research Laboratory, College of Pharmacy, Qatar University, P.O. Box 2713, Doha, Qatar.
- Office of Vice President for Research & Graduate Studies, Qatar University, P.O. Box 2713, Doha, Qatar.
| |
Collapse
|
70
|
Zhu K, Dong L, Wang J, Li D, Chen M, Jiang C, Wang J. Enhancing the functional output of transplanted islets in diabetic mice using a drug-eluting scaffold. J Biol Eng 2018; 12:5. [PMID: 29713373 PMCID: PMC5907474 DOI: 10.1186/s13036-018-0098-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Accepted: 04/12/2018] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Islet transplantation is increasingly used in the diabetic patients to control the blood glucose level. However, the functional output of transplanted islets remains hampered due to the local inflammation, loss of islets, etc. To that end, in this study we explored to enhance the functional output of transplanted islets in diabetic mice by employing a drug-eluting scaffold with a payload of interleukin 4 (IL-4). RESULTS According to the in vitro studies, the scaffold showed no cytotoxicity, a rapid release of IL-4 within a week and the IL-4 retained its bioactivity. During the 4-week time window after the islet transplantation, in vivo studies showed that the levels of blood insulin and C-peptide 2 in diabetic mice in the drug-eluting scaffold group significantly increased since week 2, which effectively reduced the blood glucose level. In addition, these mice demonstrated a stronger capability to withstand a rapid glucose spike as evidenced by the tolerance of sudden oral glucose challenge test result. A further mechanistic study suggested that the enhanced functional output could be attributed to the M2 polarization of macrophages as evidenced by the increase of CD163+/CD68+ macrophages in the islet tissues. A M2 polarization of macrophages is widely believed to exert an anti-inflammatory influence on local tissues, which could accelerate the resolution of local inflammation following the islet transplantation. CONCLUSION Our study shed a new light on the hyperglycemia management of diabetic patients following the islet transplantation.
Collapse
Affiliation(s)
- Kelei Zhu
- Department of Heptobiliary Surgery, Yinzhou People’s Hospital, Ningbo, Zhejiang China
- Yin Zhou Hospital, Medical School of Ningbo University, Baizhang Road 251, Ningbo, 315000 Zhejiang China
| | - Leqi Dong
- Department of Gastroenterology, Yinzhou People’s Hospital, Ningbo, Zhejiang China
| | - Jinbo Wang
- Department of Heptobiliary Surgery, Yinzhou People’s Hospital, Ningbo, Zhejiang China
| | - Dingyao Li
- Department of Heptobiliary Surgery, Yinzhou People’s Hospital, Ningbo, Zhejiang China
| | - Mingliang Chen
- Department of Heptobiliary Surgery, Yinzhou People’s Hospital, Ningbo, Zhejiang China
| | - Cunbin Jiang
- Department of Heptobiliary Surgery, Yinzhou People’s Hospital, Ningbo, Zhejiang China
| | - Jinfa Wang
- Department of Heptobiliary Surgery, Yinzhou People’s Hospital, Ningbo, Zhejiang China
| |
Collapse
|
71
|
Biomaterial Scaffolds in Regenerative Therapy of the Central Nervous System. BIOMED RESEARCH INTERNATIONAL 2018; 2018:7848901. [PMID: 29805977 PMCID: PMC5899851 DOI: 10.1155/2018/7848901] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/11/2017] [Revised: 02/18/2018] [Accepted: 02/21/2018] [Indexed: 02/08/2023]
Abstract
The central nervous system (CNS) is the most important section of the nervous system as it regulates the function of various organs. Injury to the CNS causes impairment of neurological functions in corresponding sites and further leads to long-term patient disability. CNS regeneration is difficult because of its poor response to treatment and, to date, no effective therapies have been found to rectify CNS injuries. Biomaterial scaffolds have been applied with promising results in regeneration medicine. They also show great potential in CNS regeneration for tissue repair and functional recovery. Biomaterial scaffolds are applied in CNS regeneration predominantly as hydrogels and biodegradable scaffolds. They can act as cellular supportive scaffolds to facilitate cell infiltration and proliferation. They can also be combined with cell therapy to repair CNS injury. This review discusses the categories and progression of the biomaterial scaffolds that are applied in CNS regeneration.
Collapse
|
72
|
LAKTAS JACOBM, GROWNEY KALAF EMILYA, SELL SCOTTA, MCQUILLING MARKW. THE USE OF COMPUTATIONAL FLUID DYNAMICS IN THE OPTIMIZATION OF AIR-IMPEDANCE ELECTROSPUN STRUCTURES FOR TISSUE ENGINEERING. J MECH MED BIOL 2018. [DOI: 10.1142/s0219519418500094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Electrospinning is a viable method for dermal tissue engineering scaffold fabrication. Grafts using air-impedance electrospinning possess the ability to significantly increase cellular infiltration. However, current air-impedance methods lack precise control over flow properties through the collecting mandrel and are unable to accurately control fiber deposition in an organized and well-distributed manner. This study focusses on the use of computational fluid dynamics (CFD) and its application to air-impedance structures to optimize the deposition of the resulting dermal graft. Air-impedance structures were created from a range of air pressures to determine the optimal pressure for fiber collection. Initial results showed a pressure of 11[Formula: see text]psi (1.3[Formula: see text]scfm), which led to increased cellular penetration, but created uneven structures. This inlet flow rate was implemented as the primary boundary condition for CFD simulations. CFD software was used to gather data on fluid flow characteristics for a variety of mandrel geometries. Results showed that a mandrel with increased length and offset pore geometry provided the highest uniformity of flow along the length of the model over the other mandrel lengths, geometries, and pore alignments based largely on pressure and velocity analysis. This mandrel was manufactured and used for validation of CFD data via scaffold analysis and cellular infiltration studies. Scaffold characterization confirmed a significant advantage in the creation of structures fabricated with the optimized air-impedance mandrel by effectively doubling the efficiency of production via larger usable scaffold area. The results indicate that CFD validation is a valuable technique to optimize air impedance scaffolds in silico and has proven to be a useful tool in the fabrication of tissue engineering scaffolds.
Collapse
Affiliation(s)
- JACOB M. LAKTAS
- Department of Biomedical Engineering, Saint Louis University, St Louis, MO 63103, USA
| | | | - SCOTT A. SELL
- Department of Biomedical Engineering, Saint Louis University, St Louis, MO 63103, USA
| | - MARK W. MCQUILLING
- Department of Aerospace and Mechanical Engineering, Saint Louis University, St Louis, MO 63103, USA
| |
Collapse
|
73
|
Wu S, Wang J, Zou L, Jin L, Wang Z, Li Y. A three-dimensional hydroxyapatite/polyacrylonitrile composite scaffold designed for bone tissue engineering. RSC Adv 2018; 8:1730-1736. [PMID: 35542578 PMCID: PMC9077050 DOI: 10.1039/c7ra12449j] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Accepted: 12/26/2017] [Indexed: 11/21/2022] Open
Abstract
In recent years, various composite scaffolds based on hydroxyapatite have been developed for bone tissue engineering. However, the poor cell survival micro-environment is still the major problem limiting their practical applications in bone repairing and regeneration. In this study, we fabricated a class of fluffy and porous three-dimensional composite fibrous scaffolds consisting of hydroxyapatite and polyacrylonitrile by employing an improved electrospinning technique combined with a bio-mineralization process. The fluffy structure of the hydroxyapatite/polyacrylonitrile composite scaffold ensured the cells would enter the interior of the scaffold and achieve a three-dimensional cell culture. Bone marrow mesenchymal stem cells were seeded into the scaffolds and cultured for 21 days in vitro to evaluate the response of cellular morphology and biochemical activities. The results indicated that the bone marrow mesenchymal stem cells showed higher degrees of growth, osteogenic differentiation and mineralization than those cultured on the two-dimensional hydroxyapatite/polyacrylonitrile composite membranes. The obtained results strongly supported the fact that the novel three-dimensional fluffy hydroxyapatite/polyacrylonitrile composite scaffold had potential application in the field of bone tissue engineering. A fluffy and porous (3D) HA composite fibrous scaffold was fabricated by employing an improved electrospinning technique combined with a bio-mineralization process.![]()
Collapse
Affiliation(s)
- Shuyi Wu
- Department of Prosthodontics
- Guanghua School of Stomatology
- Hospital of Stomatology
- Sun Yat-sen University
- Guangdong Provincial Key Laboratory of Stomatology
| | - Jieda Wang
- Department of Prosthodontics
- Guanghua School of Stomatology
- Hospital of Stomatology
- Sun Yat-sen University
- Guangdong Provincial Key Laboratory of Stomatology
| | - Leiyan Zou
- Department of Prosthodontics
- Guanghua School of Stomatology
- Hospital of Stomatology
- Sun Yat-sen University
- Guangdong Provincial Key Laboratory of Stomatology
| | - Lin Jin
- Henan Key Laboratory of Rare Earth Functional Materials
- Zhoukou Normal University
- P. R. China
- International Joint Research Laboratory for Biomedical Nanomaterials of Henan
- Zhoukou Normal University
| | - Zhenling Wang
- Henan Key Laboratory of Rare Earth Functional Materials
- Zhoukou Normal University
- P. R. China
| | - Yan Li
- Department of Prosthodontics
- Guanghua School of Stomatology
- Hospital of Stomatology
- Sun Yat-sen University
- Guangdong Provincial Key Laboratory of Stomatology
| |
Collapse
|
74
|
Li H, Huang C, Jin X, Ke Q. An electrospun poly(ε-caprolactone) nanocomposite fibrous mat with a high content of hydroxyapatite to promote cell infiltration. RSC Adv 2018; 8:25228-25235. [PMID: 35547952 PMCID: PMC9087819 DOI: 10.1039/c8ra02059k] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Accepted: 06/05/2018] [Indexed: 11/21/2022] Open
Abstract
Electrospun polymer/inorganic biomimetic nanocomposite scaffolds have emerged for use in a new strategy for bone regeneration. In this study, a poly(ε-caprolactone) (PCL)/hydroxyapatite (HAp) nanocomposite mat with a HAp content as high as 60% was prepared via one-step electrospinning using trifluoroethanol as the solvent, and it has superior dispersibility and spinnability. The structure and physicochemical properties of the scaffolds were studied using scanning electron microscopy and spectroscopic techniques. X-ray diffraction and Fourier transformed infrared spectroscopy confirmed the presence of HAp in the composite PCL fibers. The results of cell culturing suggested that the incorporation of HAp with PCL could regulate the cytoskeleton and the differentiation of cells. More interestingly, the high content of HAp was also found to be conducive to the infiltration of MC-3T3 cells into the mat. The results indicated the potential of PCL/HAp scaffolds as a promising substitute for bone regeneration. PCL nanofibers with 60% HAp content were fabricated, and the presence of HAp regulated cell morphology to enhance cell infiltration.![]()
Collapse
Affiliation(s)
- Haoxuan Li
- Key Laboratory of Textile Science & Technology
- College of Textiles
- Donghua University
- Shanghai 201620
- P. R. China
| | - Chen Huang
- Key Laboratory of Textile Science & Technology
- College of Textiles
- Donghua University
- Shanghai 201620
- P. R. China
| | - Xiangyu Jin
- Key Laboratory of Textile Science & Technology
- College of Textiles
- Donghua University
- Shanghai 201620
- P. R. China
| | - Qinfei Ke
- Key Laboratory of Textile Science & Technology
- College of Textiles
- Donghua University
- Shanghai 201620
- P. R. China
| |
Collapse
|
75
|
Wang QG, Wimpenny I, Dey RE, Zhong X, Youle PJ, Downes S, Watts DC, Budd PM, Hoyland JA, Gough JE. The unique calcium chelation property of poly(vinyl phosphonic acid-co-acrylic acid) and effects on osteogenesis in vitro. J Biomed Mater Res A 2018; 106:168-179. [PMID: 28884508 PMCID: PMC5725684 DOI: 10.1002/jbm.a.36223] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Revised: 08/14/2017] [Accepted: 08/22/2017] [Indexed: 12/27/2022]
Abstract
There is a clear clinical need for a bioactive bone graft substitute. Poly(vinyl phosphonic acid-co-acrylic acid) (PVPA-co-AA) has been identified as a promising candidate for bone regeneration but there is little evidence to show its direct osteogenic effect on progenitor or mature cells. In this study mature osteoblast-like cells (SaOS-2) and human bone marrow-derived mesenchymal stem cells (hBM-MSCs) were cultured with PVPA-co-AA polymers with different VPA:AA ratio and at different concentrations in vitro. We are the first to report the direct osteogenic effect of PVPA-co-AA polymer on bone cells and, more importantly, this effect was dependent on VPA:AA ratio and concentration. Under the optimized conditions, PVPA-co-AA polymer not only has an osteoconductive effect, enhancing SaOS-2 cell mineralization, but also has an osteoinductive effect to promote hBM-MSCs' osteogenic differentiation. Notably, the same PVPA-co-AA polymer at different concentrations could lead to differential osteogenic effects on both SaOS-2 and hBM-MSCs in vitro. This study furthers knowledge of the PVPA-co-AA polymer in osteogenic studies, which is critical when utilizing the PVPA-co-AA polymer for the design of novel bioactive polymeric tissue engineering scaffolds for future clinical applications. © 2017 The Authors Journal of Biomedical Materials Research Part A Published by Wiley Periodicals, Inc. J Biomed Mater Res Part A: 106A: 168-179, 2018.
Collapse
Affiliation(s)
- Qi Guang Wang
- National Engineering Research Center for BiomaterialsSichuan UniversityChengdu610064China
- Division of Cell Matrix Biology and Regenerative Medicine, Faculty of Biology, Medicine and HealthThe University of ManchesterManchesterM13 9PLUnited Kingdom
| | - Ian Wimpenny
- School of MaterialsThe University of ManchesterManchesterM13 9PLUnited Kingdom
| | - Rebecca E. Dey
- School of ChemistryUniversity of ManchesterManchesterM13 9PLUnited Kingdom
| | - Xia Zhong
- School of ChemistryUniversity of ManchesterManchesterM13 9PLUnited Kingdom
| | - Peter J. Youle
- School of ChemistryUniversity of ManchesterManchesterM13 9PLUnited Kingdom
| | - Sandra Downes
- School of MaterialsThe University of ManchesterManchesterM13 9PLUnited Kingdom
| | - David C. Watts
- Division of Dentistry, School of Medical Sciences and Photon Science InstituteUniversity of ManchesterManchesterM13 9PLUnited Kingdom
| | - Peter M. Budd
- School of ChemistryUniversity of ManchesterManchesterM13 9PLUnited Kingdom
| | - Judith A. Hoyland
- Division of Cell Matrix Biology and Regenerative Medicine, Faculty of Biology, Medicine and HealthThe University of ManchesterManchesterM13 9PLUnited Kingdom
- NIHR Manchester Musculoskeletal Biomedical Research Unit, Central Manchester Foundation Trust, Manchester Academic Health Science CentreManchesterUnited Kingdom
| | - Julie E. Gough
- School of MaterialsThe University of ManchesterManchesterM13 9PLUnited Kingdom
| |
Collapse
|
76
|
He FL, Li DW, He J, Liu YY, Ahmad F, Liu YL, Deng X, Ye YJ, Yin DC. A novel layer-structured scaffold with large pore sizes suitable for 3D cell culture prepared by near-field electrospinning. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017. [PMID: 29525092 DOI: 10.1016/j.msec.2017.12.016] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Electrospinning is a powerful method for preparing porous materials that can be applied as biomedical materials for implantation or tissue engineering or as scaffolds for 3D cell culture experiments. However, this technique is limited in practical applications because the pore size of 3D scaffolds directly prepared by conventional electrospinning is usually less than several tens of micrometres, which may not be suitable for 3D cell culture and tissue growth. To allow for satisfactory 3D cell culture and tissue engineering, the pore size of the scaffold should be controllable according to the requirement of the specific cells to be cultured. Here, we show that layer-structured scaffolds with pore sizes larger than 100μm can be obtained by stacking meshes prepared by direct-writing using the near-field electrospinning (NFES) technique. In the study, we prepared composite scaffolds made of polycaprolactone (PCL) and hydroxyapatite (HAp) via the above-mentioned method and tested the effectiveness of the novel scaffold in cell culture using mouse pre-osteoblast cells (MC3T3-E1). The pore size and the degradability of the PCL/HAp scaffolds were characterized. The results showed that the average pore size of the scaffolds was 167μm, which was controllable based on the required application; the degradation rate was controllable depending on the ratio of PCL to HAp. The biocompatibility of the scaffolds in vitro was studied, and it was found that the scaffolds showed no toxicity and that the cells could effectively attach, proliferate, and differentiate in the 3D skeleton of the scaffolds. Our studies showed that a simple modification of the preparation procedure can lead to a new way to fabricate novel layer-structured 3D scaffolds with controllable structures and pore sizes suitable for practical applications in implantation, tissue engineering and 3D cell culture.
Collapse
Affiliation(s)
- Feng-Li He
- Institute for Special Environmental Biophysics, Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, PR China
| | - Da-Wei Li
- Institute for Special Environmental Biophysics, Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, PR China
| | - Jin He
- Institute for Special Environmental Biophysics, Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, PR China
| | - Yang-Yang Liu
- Institute for Special Environmental Biophysics, Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, PR China
| | - Fiaz Ahmad
- Institute for Special Environmental Biophysics, Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, PR China
| | - Ya-Li Liu
- Institute for Special Environmental Biophysics, Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, PR China
| | - Xudong Deng
- Institute for Special Environmental Biophysics, Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, PR China
| | - Ya-Jing Ye
- Institute for Special Environmental Biophysics, Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, PR China.
| | - Da-Chuan Yin
- Institute for Special Environmental Biophysics, Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, PR China.
| |
Collapse
|
77
|
Babaie E, Bhaduri SB. Fabrication Aspects of Porous Biomaterials in Orthopedic Applications: A Review. ACS Biomater Sci Eng 2017; 4:1-39. [DOI: 10.1021/acsbiomaterials.7b00615] [Citation(s) in RCA: 99] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Elham Babaie
- Department
of Bioengineering, Bioscience Research Collaborative, Rice University, Houston, Texas 77030, United States
| | - Sarit B. Bhaduri
- Department
of Mechanical and Industrial Engineering and Division of Dentistry, University of Toledo, Toledo, Ohio 43606, United States
| |
Collapse
|
78
|
Burton TP, Corcoran A, Callanan A. The effect of electrospun polycaprolactone scaffold morphology on human kidney epithelial cells. Biomed Mater 2017; 13:015006. [PMID: 29165317 DOI: 10.1088/1748-605x/aa8dde] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
There is a pressing need for further advancement in tissue engineering of functional organs with a view to providing a more clinically relevant model for drug development and reduce the dependence on organ donation. Polymer-based scaffolds, such as polycaprolactone (PCL), have been highlighted as a potential avenue for tissue engineered kidneys, but there is little investigation down this stream. Focus within kidney tissue engineering has been on two-dimensional cell culture and decellularised tissue. Electrospun polymer scaffolds can be created with a variety of fibre diameters and have shown a great potential in many areas. The variation in morphology of tissue engineering scaffold has been shown to effect the way cells behave and integrate. In this study we examined the cellular response to scaffold architecture of novel electrospun scaffold for kidney tissue engineering. Fibre diameters of 1.10 ± 0.16 μm and 4.49 ± 0.47 μm were used with three distinct scaffold architectures. Traditional random fibres were spun onto a mandrel rotating at 250 rpm, aligned at 1800 rpm with novel cryogenic fibres spun onto a mandrel loaded with dry ice rotating at 250 rpm. Human kidney epithelial cells were grown for 1 and 2 weeks. Fibre morphology had no effect of cell viability in scaffolds with a large fibre diameter but significant differences were seen in smaller fibres. Fibre diameter had a significant effect in aligned and cryogenic scaffold. Imaging detailed the differences in cell attachment due to scaffold differences. These results show that architecture of the scaffold has a profound effect on kidney cells; whether that is effects of fibre diameter on the cell attachment and viability or the effect of fibre arrangement on the distribution of cells and their alignment with fibres. Results demonstrate that PCL scaffolds have the capability to maintain kidney cells life and should be investigated further as a potential scaffold in kidney tissue engineering.
Collapse
Affiliation(s)
- Todd P Burton
- Institute for Bioengineering, School of Engineering, University of Edinburgh, Faraday Building, King's Buildings, EH9 3JL, United Kingdom
| | | | | |
Collapse
|
79
|
Miao S, Zhu W, Castro NJ, Leng J, Zhang LG. Four-Dimensional Printing Hierarchy Scaffolds with Highly Biocompatible Smart Polymers for Tissue Engineering Applications. Tissue Eng Part C Methods 2017; 22:952-963. [PMID: 28195832 DOI: 10.1089/ten.tec.2015.0542] [Citation(s) in RCA: 73] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The objective of this study was to four-dimensional (4D) print novel biomimetic gradient tissue scaffolds with highly biocompatible naturally derived smart polymers. The term "4D printing" refers to the inherent smart shape transformation of fabricated constructs when implanted minimally invasively for seamless and dynamic integration. For this purpose, a series of novel shape memory polymers with excellent biocompatibility and tunable shape changing effects were synthesized and cured in the presence of three-dimensional printed sacrificial molds, which were subsequently dissolved to create controllable and graded porosity within the scaffold. Surface morphology, thermal, mechanical, and biocompatible properties as well as shape memory effects of the synthesized smart polymers and resultant porous scaffolds were characterized. Fourier transform infrared spectroscopy and gel content analysis confirmed the formation of chemical crosslinking by reacting polycaprolactone triol and castor oil with multi-isocyanate groups. Differential scanning calorimetry revealed an adjustable glass transition temperature in a range from -8°C to 35°C. Uniaxial compression testing indicated that the obtained polymers, possessing a highly crosslinked interpenetrating polymeric networks, have similar compressive modulus to polycaprolactone. Shape memory tests revealed that the smart polymers display finely tunable recovery speed and exhibit greater than 92% shape fixing at -18°C or 0°C and full shape recovery at physiological temperature. Scanning electron microscopy analysis of fabricated scaffolds revealed a graded microporous structure, which mimics the nonuniform distribution of porosity found within natural tissues. With polycaprolactone serving as a control, human bone marrow-derived mesenchymal stem cell adhesion, proliferation, and differentiation greatly increased on our novel smart polymers. The current work will significantly advance the future design and development of novel and functional biomedical scaffolds with advanced 4D printing technology and highly biocompatible smart biomaterials.
Collapse
Affiliation(s)
- Shida Miao
- 1 Department of Mechanical and Aerospace Engineering, The George Washington University , Washington, DC
| | - Wei Zhu
- 1 Department of Mechanical and Aerospace Engineering, The George Washington University , Washington, DC
| | - Nathan J Castro
- 1 Department of Mechanical and Aerospace Engineering, The George Washington University , Washington, DC
| | - Jinsong Leng
- 2 Center for Composite Materials and Structures, Harbin Institute of Technology , Harbin, P.R. China
| | - Lijie Grace Zhang
- 1 Department of Mechanical and Aerospace Engineering, The George Washington University , Washington, DC.,3 Department of Biomedical Engineering, The George Washington University , Washington, DC.,4 Department of Medicine, The George Washington University , Washington, DC
| |
Collapse
|
80
|
Pal P, Srivas PK, Dadhich P, Das B, Maulik D, Dhara S. Nano-/Microfibrous Cotton-Wool-Like 3D Scaffold with Core–Shell Architecture by Emulsion Electrospinning for Skin Tissue Regeneration. ACS Biomater Sci Eng 2017; 3:3563-3575. [DOI: 10.1021/acsbiomaterials.7b00681] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Pallabi Pal
- Biomaterials
and Tissue Engineering Laboratory, School of Medical Science and Technology, Indian Institute of Technology, Kharagpur, Kharagpur 721302, India
| | - Pavan Kumar Srivas
- Biomaterials
and Tissue Engineering Laboratory, School of Medical Science and Technology, Indian Institute of Technology, Kharagpur, Kharagpur 721302, India
| | - Prabhash Dadhich
- Biomaterials
and Tissue Engineering Laboratory, School of Medical Science and Technology, Indian Institute of Technology, Kharagpur, Kharagpur 721302, India
| | - Bodhisatwa Das
- Biomaterials
and Tissue Engineering Laboratory, School of Medical Science and Technology, Indian Institute of Technology, Kharagpur, Kharagpur 721302, India
| | - Dhrubajyoti Maulik
- Department
of Surgery, Bankura Sammilani Medical College, Bankura, India
| | - Santanu Dhara
- Biomaterials
and Tissue Engineering Laboratory, School of Medical Science and Technology, Indian Institute of Technology, Kharagpur, Kharagpur 721302, India
| |
Collapse
|
81
|
Templated Assembly of Collagen Fibers Directs Cell Growth in 2D and 3D. Sci Rep 2017; 7:9628. [PMID: 28852121 PMCID: PMC5575125 DOI: 10.1038/s41598-017-10182-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Accepted: 08/07/2017] [Indexed: 02/07/2023] Open
Abstract
Collagen is widely used in tissue engineering and regenerative medicine, with many examples of collagen-based biomaterials emerging in recent years. While there are numerous methods available for forming collagen scaffolds from isolated collagen, existing biomaterial processing techniques are unable to efficiently align collagen at the microstructural level, which is important for providing appropriate cell recognition and mechanical properties. Although some attention has shifted to development of fiber-based collagen biomaterials, existing techniques for producing and aligning collagen fibers are not appropriate for large-scale fiber manufacturing. Here, we report a novel biomaterial fabrication approach capable of efficiently generating collagen fibers of appropriate sizes using a viscous solution of dextran as a dissolvable template. We demonstrate that myoblasts readily attach and align along 2D collagen fiber networks created by this process. Furthermore, encapsulation of collagen fibers with myoblasts into non-cell-adherent hydrogels promotes aligned growth of cells and supports their differentiation. The ease-of-production and versatility of this technique will support future development of advanced in vitro tissue models and materials for regenerative medicine.
Collapse
|
82
|
Feltz KP, Growney Kalaf EA, Chen C, Martin RS, Sell SA. A review of electrospinning manipulation techniques to direct fiber deposition and maximize pore size. ACTA ACUST UNITED AC 2017. [DOI: 10.1515/esp-2017-0002] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Abstract Electrospinning has been widely accepted for several decades by the tissue engineering and regenerative medicine community as a technique for nanofiber production. Owing to the inherent flexibility of the electrospinning process, a number of techniques can be easily implemented to control fiber deposition (i.e. electric/ magnetic field manipulation, use of alternating current, or air-based fiber focusing) and/or porosity (i.e. air impedance, sacrificial porogen/sacrificial fiber incorporation, cryo-electrospinning, or alternative techniques). The purpose of this review is to highlight some of the recent work using these techniques to create electrospun scaffolds appropriate for mimicking the structure of the native extracellular matrix, and to enhance the applicability of advanced electrospinning techniques in the field of tissue engineering.
Collapse
Affiliation(s)
- Kevin P. Feltz
- 1Department of Biomedical Engineering, Saint Louis University, United States of America
| | | | - Chengpeng Chen
- 2Department of Chemistry, Saint Louis University, United States of America
| | - R. Scott Martin
- 2Department of Chemistry, Saint Louis University, United States of America
| | - Scott A. Sell
- 3Department of Biomedical Engineering, Saint Louis University; United States of America
| |
Collapse
|
83
|
Shirali H, Rafizadeh M, Afshar Taromi F, Jabbari E. Fabrication of in situ
polymerized poly(butylene succinate-co-ethylene terephthalate)/hydroxyapatite nanocomposite to fibrous scaffolds for enhancement of osteogenesis. J Biomed Mater Res A 2017; 105:2622-2631. [DOI: 10.1002/jbm.a.36115] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Revised: 04/28/2017] [Accepted: 05/15/2017] [Indexed: 11/11/2022]
Affiliation(s)
- Hadi Shirali
- Department of Polymer Engineering and Color Technology; Amirkabir University of Technology; PO Box 15875-441 Tehran Iran
| | - Mehdi Rafizadeh
- Department of Polymer Engineering and Color Technology; Amirkabir University of Technology; PO Box 15875-441 Tehran Iran
| | - Faramarz Afshar Taromi
- Department of Polymer Engineering and Color Technology; Amirkabir University of Technology; PO Box 15875-441 Tehran Iran
| | - Esmaiel Jabbari
- Department of Chemical Engineering; Biomimetic Materials and Tissue Engineering Laboratory, University of South Carolina; Columbia South Carolina 29208
| |
Collapse
|
84
|
Thi Hiep N, Chan Khon H, Dai Hai N, Byong-Taek L, Van Toi V, Thanh Hung L. Biocompatibility of PCL/PLGA-BCP porous scaffold for bone tissue engineering applications. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2017; 28:864-878. [DOI: 10.1080/09205063.2017.1311821] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Nguyen Thi Hiep
- Tissue Engineering and Regenerative Medicine Laboratory, Biomedical Engineering Department, International University, Vietnam National University-Ho Chi Minh City (VNU-HCMC), Ho Chi Minh City, Vietnam
| | - Huynh Chan Khon
- Tissue Engineering and Regenerative Medicine Laboratory, Biomedical Engineering Department, International University, Vietnam National University-Ho Chi Minh City (VNU-HCMC), Ho Chi Minh City, Vietnam
| | - Nguyen Dai Hai
- Institute of Applied Materials Science, Vietnam Academy of Science and Technology, Ho Chi Minh City, Vietnam
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology, Hanoi, Vietnam
| | - Lee Byong-Taek
- Department of Regenerative Medicine, College of Medicine, Soonchunhyang University, Cheonan, South Korea
| | - Vo Van Toi
- Tissue Engineering and Regenerative Medicine Laboratory, Biomedical Engineering Department, International University, Vietnam National University-Ho Chi Minh City (VNU-HCMC), Ho Chi Minh City, Vietnam
| | - Le Thanh Hung
- Faculty of Odonto-Stomatology, University of Medicine and Pharmacy, Ho Chi Minh City, Vietnam
| |
Collapse
|
85
|
Aghajanpoor M, Hashemi-Najafabadi S, Baghaban-Eslaminejad M, Bagheri F, Mohammad Mousavi S, Azam Sayyahpour F. The effect of increasing the pore size of nanofibrous scaffolds on the osteogenic cell culture using a combination of sacrificial agent electrospinning and ultrasonication. J Biomed Mater Res A 2017; 105:1887-1899. [PMID: 28256792 DOI: 10.1002/jbm.a.36052] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Revised: 02/27/2017] [Accepted: 02/28/2017] [Indexed: 12/31/2022]
Abstract
One of the major problems associated with the electrospun scaffolds is their small pore size, which limits the cellular infiltration for bone tissue engineering. In this study, the effect of increasing the pore size on cellular infiltration was studied in poly/nanohydroxyapatite electrospun scaffolds, which were modified using ultrasonication, co-electrospinning with poly (ethylene oxide), and a combination of both. Ultrasonic process was optimized by central composite design. The ultrasonic output power and time of the process were considered as the effective parameters. The pore size of the scaffolds was evaluated by scanning electron microscope. The optimum conditions, according to the pore area and mechanical properties of the scaffolds were selected, and finally the groups that had the highest pore size and mechanical strength were selected for the combined method. Increasing the pore size enhanced the cellular proliferation, extension and infiltration, as well as the osteodifferentiation of stem cells. At the optimum condition, the average cellular infiltration was 36.51 µm compared to the control group with no cellular infiltration. In addition, alkaline phosphatase activity and the expression of osteocalcin and collagen I (COL I) were, respectively, 1.86, 2.54, and 2.16 fold compared to the control group on day 14. © 2016 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 105A: 1887-1899, 2017.
Collapse
Affiliation(s)
- Mahdiyeh Aghajanpoor
- Department of Biomedical Engineering, Faculty of Chemical Engineering, Tarbiat Modares University, Tehran, Iran
| | - Sameereh Hashemi-Najafabadi
- Department of Biomedical Engineering, Faculty of Chemical Engineering, Tarbiat Modares University, Tehran, Iran
| | - Mohamadreza Baghaban-Eslaminejad
- Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Fatemeh Bagheri
- Department of Biotechnology, Faculty of Chemical Engineering, Tarbiat Modares University, Tehran, Iran
| | - Seyyed Mohammad Mousavi
- Department of Biotechnology, Faculty of Chemical Engineering, Tarbiat Modares University, Tehran, Iran
| | - Foruogh Azam Sayyahpour
- Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| |
Collapse
|
86
|
Anitha A, Joseph J, Menon D, Nair SV, Nair MB. Electrospun Yarn Reinforced NanoHA Composite Matrix as a Potential Bone Substitute for Enhanced Regeneration of Segmental Defects. Tissue Eng Part A 2017; 23:345-358. [DOI: 10.1089/ten.tea.2016.0337] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Affiliation(s)
- A. Anitha
- Center for Nanosciences and Molecular Medicine, Amrita Institute of Medical Sciences & Research Center, Amrita Vishwa Vidyapeetham University, Cochin, India
| | - John Joseph
- Center for Nanosciences and Molecular Medicine, Amrita Institute of Medical Sciences & Research Center, Amrita Vishwa Vidyapeetham University, Cochin, India
| | - Deepthy Menon
- Center for Nanosciences and Molecular Medicine, Amrita Institute of Medical Sciences & Research Center, Amrita Vishwa Vidyapeetham University, Cochin, India
| | - Shantikumar V. Nair
- Center for Nanosciences and Molecular Medicine, Amrita Institute of Medical Sciences & Research Center, Amrita Vishwa Vidyapeetham University, Cochin, India
| | - Manitha B. Nair
- Center for Nanosciences and Molecular Medicine, Amrita Institute of Medical Sciences & Research Center, Amrita Vishwa Vidyapeetham University, Cochin, India
| |
Collapse
|
87
|
Preparation, physicochemical properties and biocompatibility of PBLG/PLGA/bioglass composite scaffolds. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 71:118-124. [DOI: 10.1016/j.msec.2016.09.085] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2016] [Revised: 08/31/2016] [Accepted: 09/29/2016] [Indexed: 12/13/2022]
|
88
|
Jeong JO, Jeong SI, Park JS, Gwon HJ, Ahn SJ, Shin H, Lee JY, Lim YM. Development and characterization of heparin-immobilized polycaprolactone nanofibrous scaffolds for tissue engineering using gamma-irradiation. RSC Adv 2017. [DOI: 10.1039/c6ra20082f] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Polycaprolactone (PCL) has been considered a useful material for orthopedic devices and osseous implants because of its biocompatibility and bone-forming activity.
Collapse
Affiliation(s)
- Jin-Oh Jeong
- Research Division for Industry & Environment
- Advanced Radiation Technology Institute
- Korea Atomic Energy Research Institute (KAERI)
- Jeongeup
- Republic of Korea
| | - Sung In Jeong
- Research Division for Industry & Environment
- Advanced Radiation Technology Institute
- Korea Atomic Energy Research Institute (KAERI)
- Jeongeup
- Republic of Korea
| | - Jong-Seok Park
- Research Division for Industry & Environment
- Advanced Radiation Technology Institute
- Korea Atomic Energy Research Institute (KAERI)
- Jeongeup
- Republic of Korea
| | - Hui-Jeong Gwon
- Research Division for Industry & Environment
- Advanced Radiation Technology Institute
- Korea Atomic Energy Research Institute (KAERI)
- Jeongeup
- Republic of Korea
| | - Sung-Jun Ahn
- Research Division for Industry & Environment
- Advanced Radiation Technology Institute
- Korea Atomic Energy Research Institute (KAERI)
- Jeongeup
- Republic of Korea
| | - Heungsoo Shin
- Department of Bioengineering
- Division of Applied Chemical and Bio Engineering
- Hanyang University
- Seoul 133-791
- Republic of Korea
| | - Jae Young Lee
- School of Materials Science and Engineering
- Gwangju Institute of Science and Technology (GIST)
- Gwangju 61005
- Republic of Korea
| | - Youn-Mook Lim
- Research Division for Industry & Environment
- Advanced Radiation Technology Institute
- Korea Atomic Energy Research Institute (KAERI)
- Jeongeup
- Republic of Korea
| |
Collapse
|
89
|
Cheng J, Jun Y, Qin J, Lee SH. Electrospinning versus microfluidic spinning of functional fibers for biomedical applications. Biomaterials 2017; 114:121-143. [DOI: 10.1016/j.biomaterials.2016.10.040] [Citation(s) in RCA: 190] [Impact Index Per Article: 27.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Revised: 09/29/2016] [Accepted: 10/27/2016] [Indexed: 12/31/2022]
|
90
|
Effects of Different Fibre Alignments and Bioactive Coatings on Mesenchymal Stem/Stromal Cell Adhesion and Proliferation in Poly (ɛ-caprolactone) Scaffolds towards Cartilage Repair. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/j.promfg.2017.08.034] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
|
91
|
Bai L, Li Q, Duo X, Hao X, Zhang W, Shi C, Guo J, Ren X, Feng Y. Electrospun PCL-PIBMD/SF blend scaffolds with plasmid complexes for endothelial cell proliferation. RSC Adv 2017. [DOI: 10.1039/c7ra06253b] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
PCL-PIBMD/SF scaffolds can maintain the integrity of plasmid complexes loaded in scaffolds, and thereby enhance the proliferation of endothelial cells.
Collapse
Affiliation(s)
- Lingchuang Bai
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300350
- China
- Collaborative Innovation Center of Chemical Science and Chemical Engineering (Tianjin)
| | - Qian Li
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300350
- China
- Collaborative Innovation Center of Chemical Science and Chemical Engineering (Tianjin)
| | - Xinghong Duo
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300350
- China
- Collaborative Innovation Center of Chemical Science and Chemical Engineering (Tianjin)
| | - Xuefang Hao
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300350
- China
- Collaborative Innovation Center of Chemical Science and Chemical Engineering (Tianjin)
| | - Wencheng Zhang
- Department of Physiology and Pathophysiology
- Logistics University of Chinese People's Armed Police Force
- Tianjin 300162
- China
| | - Changcan Shi
- Institute of Biomaterials and Engineering
- Wenzhou Medical University
- Wenzhou
- China
- Wenzhou Institute of Biomaterials and Engineering
| | - Jintang Guo
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300350
- China
- Collaborative Innovation Center of Chemical Science and Chemical Engineering (Tianjin)
| | - Xiangkui Ren
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300350
- China
- Collaborative Innovation Center of Chemical Science and Chemical Engineering (Tianjin)
| | - Yakai Feng
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300350
- China
- Collaborative Innovation Center of Chemical Science and Chemical Engineering (Tianjin)
| |
Collapse
|
92
|
Boddupalli A, Zhu L, Bratlie KM. Methods for Implant Acceptance and Wound Healing: Material Selection and Implant Location Modulate Macrophage and Fibroblast Phenotypes. Adv Healthc Mater 2016; 5:2575-2594. [PMID: 27593734 DOI: 10.1002/adhm.201600532] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Revised: 06/17/2016] [Indexed: 12/12/2022]
Abstract
This review focuses on materials and methods used to induce phenotypic changes in macrophages and fibroblasts. Herein, we give a brief overview on how changes in macrophages and fibroblasts phenotypes are critical biomarkers for identification of implant acceptance, wound healing effectiveness, and are also essential for evaluating the regenerative capabilities of some hybrid strategies that involve the combination of natural and synthetic materials. The different types of cells present during the host response have been extensively studied for evaluating the reaction to different materials and there are varied material approaches towards fabrication of biocompatible substrates. We discuss how natural and synthetic materials have been used to engineer desirable outcomes in lung, heart, liver, skin, and musculoskeletal implants, and how certain properties such as rigidity, surface shape, and porosity play key roles in the progression of the host response. Several fabrication strategies are discussed to control the phenotype of infiltrating macrophages and fibroblasts: decellularization of scaffolds, surface coatings, implant shape, and pore size apart from biochemical signaling pathways that can inhibit or accelerate unfavorable host responses. It is essential to factor all the different design principles and material fabrication criteria for evaluating the choice of implant materials or regenerative therapeutic strategies.
Collapse
Affiliation(s)
- Anuraag Boddupalli
- Department of Chemical & Biological Engineering; Iowa State University; 2114 Sweeney Hall Ames IA 50011 USA
| | - Lida Zhu
- Department of Chemical & Biological Engineering; Iowa State University; 2114 Sweeney Hall Ames IA 50011 USA
| | - Kaitlin M. Bratlie
- Department of Chemical & Biological Engineering; Iowa State University; 2114 Sweeney Hall Ames IA 50011 USA
- Department of Materials Science & Engineering; Iowa State University; 2220 Hoover Hall Ames IA 50011 USA
- Division of Materials Science & Engineering; Ames National Laboratory; 126 Metals Development Ames IA 50011 USA
| |
Collapse
|
93
|
Biazar E. Application of polymeric nanofibers in medical designs, part III: Musculoskeletal and urological tissues. INT J POLYM MATER PO 2016. [DOI: 10.1080/00914037.2016.1180620] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Esmaeil Biazar
- Department of Biomaterials Engineering, Tonekabon Branch, Islamic Azad University, Tonekabon, Iran
| |
Collapse
|
94
|
Nicholas MN, Jeschke MG, Amini-Nik S. Methodologies in creating skin substitutes. Cell Mol Life Sci 2016; 73:3453-72. [PMID: 27154041 PMCID: PMC4982839 DOI: 10.1007/s00018-016-2252-8] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2016] [Revised: 04/21/2016] [Accepted: 04/22/2016] [Indexed: 12/14/2022]
Abstract
The creation of skin substitutes has significantly decreased morbidity and mortality of skin wounds. Although there are still a number of disadvantages of currently available skin substitutes, there has been a significant decline in research advances over the past several years in improving these skin substitutes. Clinically most skin substitutes used are acellular and do not use growth factors to assist wound healing, key areas of potential in this field of research. This article discusses the five necessary attributes of an ideal skin substitute. It comprehensively discusses the three major basic components of currently available skin substitutes: scaffold materials, growth factors, and cells, comparing and contrasting what has been used so far. It then examines a variety of techniques in how to incorporate these basic components together to act as a guide for further research in the field to create cellular skin substitutes with better clinical results.
Collapse
Affiliation(s)
- Mathew N Nicholas
- Faculty of Medicine, University of Toronto, Toronto, ON, Canada
- Ross Tilley Burn Centre, Sunnybrook Research Institute, Room: M7-140, 2075 Bayview Ave., Toronto, ON, M4N 3M5, Canada
| | - Marc G Jeschke
- Department of Surgery, University of Toronto, Toronto, ON, Canada
- Ross Tilley Burn Centre, Sunnybrook Research Institute, Room: M7-140, 2075 Bayview Ave., Toronto, ON, M4N 3M5, Canada
| | - Saeid Amini-Nik
- Department of Surgery, University of Toronto, Toronto, ON, Canada.
- Ross Tilley Burn Centre, Sunnybrook Research Institute, Room: M7-140, 2075 Bayview Ave., Toronto, ON, M4N 3M5, Canada.
| |
Collapse
|
95
|
Modulevsky DJ, Cuerrier CM, Pelling AE. Biocompatibility of Subcutaneously Implanted Plant-Derived Cellulose Biomaterials. PLoS One 2016; 11:e0157894. [PMID: 27328066 PMCID: PMC4915699 DOI: 10.1371/journal.pone.0157894] [Citation(s) in RCA: 128] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Accepted: 06/07/2016] [Indexed: 12/22/2022] Open
Abstract
There is intense interest in developing novel biomaterials which support the invasion and proliferation of living cells for potential applications in tissue engineering and regenerative medicine. Decellularization of existing tissues have formed the basis of one major approach to producing 3D scaffolds for such purposes. In this study, we utilize the native hypanthium tissue of apples and a simple preparation methodology to create implantable cellulose scaffolds. To examine biocompatibility, scaffolds were subcutaneously implanted in wild-type, immunocompetent mice (males and females; 6-9 weeks old). Following the implantation, the scaffolds were resected at 1, 4 and 8 weeks and processed for histological analysis (H&E, Masson's Trichrome, anti-CD31 and anti-CD45 antibodies). Histological analysis revealed a characteristic foreign body response to the scaffold 1 week post-implantation. However, the immune response was observed to gradually disappear by 8 weeks post-implantation. By 8 weeks, there was no immune response in the surrounding dermis tissue and active fibroblast migration within the cellulose scaffold was observed. This was concomitant with the deposition of a new collagen extracellular matrix. Furthermore, active blood vessel formation within the scaffold was observed throughout the period of study indicating the pro-angiogenic properties of the native scaffolds. Finally, while the scaffolds retain much of their original shape they do undergo a slow deformation over the 8-week length of the study. Taken together, our results demonstrate that native cellulose scaffolds are biocompatible and exhibit promising potential as a surgical biomaterial.
Collapse
Affiliation(s)
- Daniel J. Modulevsky
- Centre for Interdisciplinary NanoPhysics, University of Ottawa, Ottawa, Ontario, Canada
- Department of Biology, University of Ottawa, Ottawa, Ontario, Canada
| | - Charles M. Cuerrier
- Centre for Interdisciplinary NanoPhysics, University of Ottawa, Ottawa, Ontario, Canada
- Department of Physics, University of Ottawa, Ottawa, Ontario, Canada
| | - Andrew E. Pelling
- Centre for Interdisciplinary NanoPhysics, University of Ottawa, Ottawa, Ontario, Canada
- Department of Biology, University of Ottawa, Ottawa, Ontario, Canada
- Department of Physics, University of Ottawa, Ottawa, Ontario, Canada
- Institute for Science, Society and Policy, University of Ottawa, Ottawa, Ontario, Canada
- SymbioticA, School of Anatomy, Physiology and Human Biology, University of Western Australia, Perth WA 6009, Australia
| |
Collapse
|
96
|
Stoddard RJ, Steger AL, Blakney AK, Woodrow KA. In pursuit of functional electrospun materials for clinical applications in humans. Ther Deliv 2016; 7:387-409. [PMID: 27250537 PMCID: PMC6077760 DOI: 10.4155/tde-2016-0017] [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: 02/24/2016] [Accepted: 04/29/2016] [Indexed: 12/20/2022] Open
Abstract
Electrospinning is a simple, low-cost and versatile approach to fabricate multifunctional materials useful in drug delivery and tissue engineering applications. Despite its emergence into other manufacturing sectors, electrospinning has not yet made a transformative impact in the clinic with a pharmaceutical product for use in humans. Why is this the current state of electrospun materials in biomedicine? Is it because electrospun materials are not yet capable of overcoming the biological safety and efficacy challenges needed in pharmaceutical products? Or, is it that technological advances in the electrospinning process are needed? This review investigates the current state of electrospun materials in medicine to identify both scientific and technological gaps that may limit clinical translation.
Collapse
|
97
|
Fuller KP, Gaspar D, Delgado LM, Pandit A, Zeugolis DI. Influence of porosity and pore shape on structural, mechanical and biological properties of poly ϵ-caprolactone electro-spun fibrous scaffolds. Nanomedicine (Lond) 2016; 11:1031-40. [DOI: 10.2217/nnm.16.21] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Background: Electro-spun scaffolds are utilized in a diverse spectrum of clinical targets, with an ever-increasing quantity of work progressing to clinical studies and commercialization. The limited number of conformations in which the scaffolds can be fabricated hampers their wide acceptance in clinical practice. Materials & methods: Herein, we assessed a single-strep fabrication process for predesigned electro-spun scaffold preparation and the ramifications of the introduction of porosity (0, 30, 50, 70%) and pore shape (circle, rhomboid, square) on structural, mechanical (tensile and ball burst) and biological (dermal fibroblast and THP-1) properties. Results: The collector design did not affect the fibrous nature of the scaffold. Modulation of the porosity and pore shape offered control over the mechanical properties of the scaffolds. Neither the porosity nor the pore shape affected cellular (dermal fibroblast and THP-1) response. Conclusion: Overall, herein we provide evidence that electro-spun scaffolds of controlled architecture can be fabricated with fibrous fidelity, adequate mechanical properties and acceptable cytocompatibility for a diverse range of clinical targets.
Collapse
Affiliation(s)
- Kieran P Fuller
- Regenerative, Modular & Developmental Engineering Laboratory (REMODEL), National University of Ireland, Galway (NUI Galway), Galway, Ireland
- Centre for Research in Medical Devices (CÚRAM), National University of Ireland, Galway (NUI Galway), Galway, Ireland
| | - Diana Gaspar
- Regenerative, Modular & Developmental Engineering Laboratory (REMODEL), National University of Ireland, Galway (NUI Galway), Galway, Ireland
- Centre for Research in Medical Devices (CÚRAM), National University of Ireland, Galway (NUI Galway), Galway, Ireland
| | - Luis M Delgado
- Regenerative, Modular & Developmental Engineering Laboratory (REMODEL), National University of Ireland, Galway (NUI Galway), Galway, Ireland
- Centre for Research in Medical Devices (CÚRAM), National University of Ireland, Galway (NUI Galway), Galway, Ireland
| | - Abhay Pandit
- Centre for Research in Medical Devices (CÚRAM), National University of Ireland, Galway (NUI Galway), Galway, Ireland
| | - Dimitrios I Zeugolis
- Regenerative, Modular & Developmental Engineering Laboratory (REMODEL), National University of Ireland, Galway (NUI Galway), Galway, Ireland
- Centre for Research in Medical Devices (CÚRAM), National University of Ireland, Galway (NUI Galway), Galway, Ireland
| |
Collapse
|
98
|
Nicholas MN, Jeschke MG, Amini-Nik S. Cellularized Bilayer Pullulan-Gelatin Hydrogel for Skin Regeneration. Tissue Eng Part A 2016; 22:754-64. [PMID: 27072720 PMCID: PMC4876533 DOI: 10.1089/ten.tea.2015.0536] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Accepted: 04/12/2016] [Indexed: 12/24/2022] Open
Abstract
Skin substitutes significantly reduce the morbidity and mortality of patients with burn injuries and chronic wounds. However, current skin substitutes have disadvantages related to high costs and inadequate skin regeneration due to highly inflammatory wounds. Thus, new skin substitutes are needed. By combining two polymers, pullulan, an inexpensive polysaccharide with antioxidant properties, and gelatin, a derivative of collagen with high water absorbency, we created a novel inexpensive hydrogel-named PG-1 for "pullulan-gelatin first generation hydrogel"-suitable for skin substitutes. After incorporating human fibroblasts and keratinocytes onto PG-1 using centrifugation over 5 days, we created a cellularized bilayer skin substitute. Cellularized PG-1 was compared to acellular PG-1 and no hydrogel (control) in vivo in a mouse excisional skin biopsy model using newly developed dome inserts to house the skin substitutes and prevent mouse skin contraction during wound healing. PG-1 had an average pore size of 61.69 μm with an ideal elastic modulus, swelling behavior, and biodegradability for use as a hydrogel for skin substitutes. Excellent skin cell viability, proliferation, differentiation, and morphology were visualized through live/dead assays, 5-bromo-2'-deoxyuridine proliferation assays, and confocal microscopy. Trichrome and immunohistochemical staining of excisional wounds treated with the cellularized skin substitute revealed thicker newly formed skin with a higher proportion of actively proliferating cells and incorporation of human cells compared to acellular PG-1 or control. Excisional wounds treated with acellular or cellularized hydrogels showed significantly less macrophage infiltration and increased angiogenesis 14 days post skin biopsy compared to control. These results show that PG-1 has ideal mechanical characteristics and allows ideal cellular characteristics. In vivo evidence suggests that cellularized PG-1 promotes skin regeneration and may help promote wound healing in highly inflammatory wounds, such as burns and chronic wounds.
Collapse
Affiliation(s)
- Mathew N Nicholas
- Department of Surgery, Sunnybrook Research Institute, Ross Tilley Burn Centre, University of Toronto , Toronto, Ontario, Canada
| | - Marc G Jeschke
- Department of Surgery, Sunnybrook Research Institute, Ross Tilley Burn Centre, University of Toronto , Toronto, Ontario, Canada
| | - Saeid Amini-Nik
- Department of Surgery, Sunnybrook Research Institute, Ross Tilley Burn Centre, University of Toronto , Toronto, Ontario, Canada
| |
Collapse
|
99
|
Khorshidi S, Karkhaneh A. Formation of three-dimensionality in polyaniline-based nanofibers: A highly conductive permeable scaffold for stem cells residence. INT J POLYM MATER PO 2016. [DOI: 10.1080/00914037.2016.1157794] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
|
100
|
Timashev P, Kuznetsova D, Koroleva A, Prodanets N, Deiwick A, Piskun Y, Bardakova K, Dzhoyashvili N, Kostjuk S, Zagaynova E, Rochev Y, Chichkov B, Bagratashvili V. Novel biodegradable star-shaped polylactide scaffolds for bone regeneration fabricated by two-photon polymerization. Nanomedicine (Lond) 2016; 11:1041-53. [PMID: 27078220 DOI: 10.2217/nnm-2015-0022] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM To assess the properties of 3D biodegradable scaffolds fabricated from novel star-shaped poly(D,L-lactide) (SSL) materials for bone tissue regeneration. MATERIALS & METHODS The SSL polymer was synthesized using an optimized synthetic procedure and applied for scaffold fabrication by the two-photon polymerization technique. The osteogenic differentiation was controlled using human adipose-derived stem cells cultured for 28 days. The SSL scaffolds with or without murine MSCs were implanted into the cranial bone of C57/Bl6 mice. RESULTS The SSL scaffolds supported differentiation of human adipose-derived stem cells toward the osteogenic lineage in vitro. The SSL scaffolds with murine MSCs enhanced the mineralized tissue formation. CONCLUSION The SSL scaffolds provide a beneficial microenvironment for the osteogenic MSCs' differentiation in vitro and support de novo bone formation in vivo.
Collapse
Affiliation(s)
- Peter Timashev
- Institute of Photonic Technologies, Research Centrer of Crystallography and Photonics RAS, 108840, Troitsk, Moscow, Russia
| | | | | | | | - Andrea Deiwick
- Laser Zentrum Hannover e. V., Hollerithallee 8, 30419 Hannover, Germany
| | - Yuri Piskun
- Research Institute for Physical Chemical Problems of the Belarusian State University, Minsk, Belarus
| | - Ksenia Bardakova
- Institute of Photonic Technologies, Research Centrer of Crystallography and Photonics RAS, 108840, Troitsk, Moscow, Russia
| | - Nina Dzhoyashvili
- National Centre for Biomedical Engineering Science, College of Science, National University of Ireland, Galway (NUI Galway), Galway, Ireland
| | - Sergei Kostjuk
- Research Institute for Physical Chemical Problems of the Belarusian State University, Minsk, Belarus
| | - Elena Zagaynova
- Nizhny Novgorod State Medical Academy, Nizhny Novgorod, Russia
| | - Yuri Rochev
- I.M. Sechenov First Moscow State Medical University, Institute for Uronephrology and Reproductive Health, 119991 Moscow, Russia
| | - Boris Chichkov
- Institute of Photonic Technologies, Research Centrer of Crystallography and Photonics RAS, 108840, Troitsk, Moscow, Russia
| | - Viktor Bagratashvili
- Institute of Photonic Technologies, Research Centrer of Crystallography and Photonics RAS, 108840, Troitsk, Moscow, Russia
| |
Collapse
|