1
|
Mohamed MA, Abd El-Rahman MK, Mousavi MPS. Electrospun nanofibers: promising nanomaterials for biomedical applications. ELECTROCHEMISTRY 2023:225-260. [DOI: 10.1039/bk9781839169366-00225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/01/2023] Open
Abstract
With the rapid development of nanotechnology and nanomaterials science, electrospun nanofibers emerged as a new material with great potential for a variety of applications. Electrospinning is a simple and adaptable process for generation of nanofibers from a viscoelastic fluid using electrostatic repulsion between surface charges. Electrospinning has been used to manufacture nanofibers with low diameters from a wide range of materials. Electrospinning may also be used to construct nanofibers with a variety of secondary structures, including those having a porous, hollow, or core–sheath structure. Due to many attributes including their large specific surface area and high porosity, electrospun nanofibers are suitable for biosensing and environmental monitoring. This book chapter discusses the different methods of nanofiber preparations and the challenges involved, recent research progress in electrospun nanofibers, and the ways to commercialize these nanofiber materials.
Collapse
Affiliation(s)
- Mona A. Mohamed
- Pharmaceutical Chemistry Department, Egyptian Drug Authority Giza Egypt
- Biomedical Engineering University of Southern California Los Angeles USA
| | - Mohamed K. Abd El-Rahman
- Analytical Chemistry Department, Faculty of Pharmacy Cairo University, Kasr-El Aini Street Cairo 11562 Egypt
| | - Maral P. S. Mousavi
- Analytical Chemistry Department, Faculty of Pharmacy Cairo University, Kasr-El Aini Street Cairo 11562 Egypt
| |
Collapse
|
2
|
Salimbeigi G, Cahill PA, McGuinness GB. Solvent system effects on the physical and mechanical properties of electrospun Poly(ε-caprolactone) scaffolds for in vitro lung models. J Mech Behav Biomed Mater 2022; 136:105493. [PMID: 36252423 DOI: 10.1016/j.jmbbm.2022.105493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2022] [Revised: 09/24/2022] [Accepted: 09/27/2022] [Indexed: 11/06/2022]
Abstract
Mechanical properties are among the key considerations for the design and fabrication of complex tissue models and implants. In addition to the choice of material and the processing technique, the solvent system can significantly influence the mechanical properties of scaffolds. Poly(ε-caprolactone) (PCL) has been abundantly used to develop constructs, fibrous in particular, for pharmaceutical and biomedical research due to the flexibility offered by PCL-based fibrous matrices. The effect of solvent type on the morphological features of electrospun fibres has been extensively studied. Nevertheless, comprehensive studies on the impact of the solvent system on the mechanical properties of electrospun PCL fibres are lacking. This study elucidates the relationship between topographical, physical and mechanical properties of electrospun PCL fibrous meshes upon using various solvent systems. The results of the mechanical investigation highlight the significance of inter-fibre bonds on the mechanical properties of the bulk membranes and that the option of altering the solvent system composition could be considered for tuning the mechanical properties of the PCL scaffolds to serve specific biomedical application requirements. The applicability of the developed membranes as artificial ECM (Extracellular matrix) in the lung will then be investigated and compared to the commercial Polycarbonate (PC) membranes that are often used for in vitro lung models.
Collapse
Affiliation(s)
- G Salimbeigi
- Centre for Medical Engineering Research, School of Mechanical & Manufacturing Engineering, Dublin City University, Dublin 9, Ireland
| | - P A Cahill
- Vascular Biology and Therapeutics Laboratory, School of Biotechnology, Dublin City University, Dublin 9, Ireland
| | - G B McGuinness
- Centre for Medical Engineering Research, School of Mechanical & Manufacturing Engineering, Dublin City University, Dublin 9, Ireland.
| |
Collapse
|
3
|
In Vitro and In Vivo Cell-Interactions with Electrospun Poly (Lactic-Co-Glycolic Acid) (PLGA): Morphological and Immune Response Analysis. Polymers (Basel) 2022; 14:polym14204460. [PMID: 36298036 PMCID: PMC9611119 DOI: 10.3390/polym14204460] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 09/28/2022] [Accepted: 09/30/2022] [Indexed: 11/07/2022] Open
Abstract
Random electrospun three-dimensional fiber membranes mimic the extracellular matrix and the interfibrillar spaces promotes the flow of nutrients for cells. Electrospun PLGA membranes were analyzed in vitro and in vivo after being sterilized with gamma radiation and bioactivated with fibronectin or collagen. Madin-Darby Canine Kidney (MDCK) epithelial cells and primary fibroblast-like cells from hamster’s cheek paunch proliferated over time on these membranes, evidencing their good biocompatibility. Cell-free irradiated PLGA membranes implanted on the back of hamsters resulted in a chronic granulomatous inflammatory response, observed after 7, 15, 30 and 90 days. Morphological analysis of implanted PLGA using light microscopy revealed epithelioid cells, Langhans type of multinucleate giant cells (LCs) and multinucleated giant cells (MNGCs) with internalized biomaterial. Lymphocytes increased along time due to undegraded polymer fragments, inducing the accumulation of cells of the phagocytic lineage, and decreased after 90 days post implantation. Myeloperoxidase+ cells increased after 15 days and decreased after 90 days. LCs, MNGCs and capillaries decreased after 90 days. Analysis of implanted PLGA after 7, 15, 30 and 90 days using transmission electron microscope (TEM) showed cells exhibiting internalized PLGA fragments and filopodia surrounding PLGA fragments. Over time, TEM analysis showed less PLGA fragments surrounded by cells without fibrous tissue formation. Accordingly, MNGC constituted a granulomatous reaction around the polymer, which resolves with time, probably preventing a fibrous capsule formation. Finally, this study confirms the biocompatibility of electrospun PLGA membranes and their potential to accelerate the healing process of oral ulcerations in hamsters’ model in association with autologous cells.
Collapse
|
4
|
Electrospinning of Biomedical Nanofibers/Nanomembranes: Effects of Process Parameters. Polymers (Basel) 2022; 14:polym14183719. [PMID: 36145868 PMCID: PMC9504486 DOI: 10.3390/polym14183719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 05/20/2022] [Accepted: 05/24/2022] [Indexed: 12/04/2022] Open
Abstract
Nanotechnology has attracted great attention from researchers in modern science because nanomaterials have innovative and superior physical, chemical, and biological properties, and they can be altered and modified accordingly. As particles get smaller, their surface area increases compared to their volume. Electrospinning is one of the advanced techniques to produce ultrathin nanofibers and membranes, and it is one of the best ways to create continuous nanomaterials with variable biological, chemical, and physical properties. The produced fibers can be utilized in various domains such as wound dressing, drug release, enzyme immobilization, etc. This review examines the biomedical nanofibers/membranes produced by electrospinning techniques to investigate the effects of process parameters (e.g., solution characteristics, applied voltage, and ambient conditions) on nanofiber characteristics (physical, chemical, and mechanical properties). The solution parameters like (i) optimum concentration, (ii) higher molecular weight, and (iii) higher conductivity produce uniform nanofibers, smoother nanofibers, and a smaller and more uniform fiber diameter, respectively. In addition, process parameters such as (i) higher voltage and (ii) slower flow rate produce more polymer ejection from the nozzle and enhance the smoother fiber production, respectively. The optimum tip-to-collector distance is considered to be 13–15 cm. The ambient conditions such as (i) higher humidity and (ii) higher temperature produce thicker and thinner nanofibers, respectively. The controlled parameters through optimization process determine the size and quality of the fibers. The effects of each parameter are discussed in this review. The applications of nanofibers are also discussed.
Collapse
|
5
|
Rabie AM, Ali ASM, Al-Zeer MA, Barhoum A, EL-Hallouty S, Shousha WG, Berg J, Kurreck J, Khalil ASG. Spontaneous Formation of 3D Breast Cancer Tissues on Electrospun Chitosan/Poly(ethylene oxide) Nanofibrous Scaffolds. ACS OMEGA 2022; 7:2114-2126. [PMID: 35071900 PMCID: PMC8771982 DOI: 10.1021/acsomega.1c05646] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2021] [Accepted: 12/22/2021] [Indexed: 05/06/2023]
Abstract
Three-dimensional (3D) tissue culture has attracted a great deal of attention as a result of the need to replace the conventional two-dimensional cell cultures with more meaningful methods, especially for understanding the sophisticated nature of native tumor microenvironments. However, most techniques for 3D tissue culture are laborious, expensive, and limited to spheroid formation. In this study, a low-cost and highly effective nanofibrous scaffold is presented for spontaneous formation of reproducible 3D breast cancer microtissues. Experimentally, aligned and non-aligned chitosan/poly(ethylene oxide) nanofibrous scaffolds were prepared at one of two chitosan concentrations (2 and 4 wt %) and various electrospinning parameters. The resulting fabricated scaffolds (C2P1 and C4P1) were structurally and morphologically characterized, as well as analyzed in silico. The obtained data suggest that the fiber diameter, surface roughness, and scaffold wettability are tunable and can be influenced based on the chitosan concentration, electrospinning conditions, and alignment mode. To test the usefulness of the fabricated scaffolds for 3D cell culture, a breast cancer cell line (MCF-7) was cultured on their surfaces and evaluated morphologically and biochemically. The obtained data showed a higher proliferation rate for cells grown on scaffolds compared to cells grown on two-dimensional adherent plates (tissue culture plate). The MTT assay revealed that the rate of cell proliferation on nanofibrous scaffolds is statistically significantly higher compared to tissue culture plate (P ≤ 0.001) after 14 days of culture. The formation of spheroids within the first few days of culture shows that the scaffolds effectively support 3D tissue culture from the outset of the experiment. Furthermore, 3D breast cancer tissues were spontaneously formed within 10 days of culture on aligned and non-aligned nanofibrous scaffolds, which suggests that the scaffolds imitate the in vivo extracellular matrix in the tumor microenvironment. Detailed mechanisms for the spontaneous formation of the 3D microtissues have been proposed. Our results suggest that scaffold surface topography significantly influences tissue formation and behavior of the cells.
Collapse
Affiliation(s)
- Amna M.
I. Rabie
- Environmental
and Smart Technology Group (ESTG), Faculty of Science, Fayoum University, 63514 Fayoum, Egypt
- Chemistry
Department, Faculty of Science, Helwan University, Ain Helwan, 11795 Cairo, Egypt
| | - Ahmed S. M. Ali
- Department
of Applied Biochemistry, Institute of Biotechnology, Technische Universität Berlin, 13355 Berlin, Germany
- Nanotechnology
Research Center (NTRC), The British University
in Egypt (BUE), El-Sherouk City, 11837 Cairo, Egypt
| | - Munir A. Al-Zeer
- Department
of Applied Biochemistry, Institute of Biotechnology, Technische Universität Berlin, 13355 Berlin, Germany
| | - Ahmed Barhoum
- Chemistry
Department, Faculty of Science, Helwan University, Ain Helwan, 11795 Cairo, Egypt
| | - Salwa EL-Hallouty
- Department
of Medicinal Drugs, National Research Center, 12622 Giza, Egypt
| | - Wafaa G. Shousha
- Chemistry
Department, Faculty of Science, Helwan University, Ain Helwan, 11795 Cairo, Egypt
| | - Johanna Berg
- Department
of Applied Biochemistry, Institute of Biotechnology, Technische Universität Berlin, 13355 Berlin, Germany
| | - Jens Kurreck
- Department
of Applied Biochemistry, Institute of Biotechnology, Technische Universität Berlin, 13355 Berlin, Germany
| | - Ahmed S. G. Khalil
- Environmental
and Smart Technology Group (ESTG), Faculty of Science, Fayoum University, 63514 Fayoum, Egypt
- Materials
Science & Engineering Department, School of Innovative Design
Engineering, Egypt-Japan University of Science
and Technology (E-JUST), 21934 Alexandria, Egypt
| |
Collapse
|
6
|
Dai T, Ma J, Ni S, Liu C, Wang Y, Wu S, Liu J, Weng Y, Zhou D, Jimenez-Franco A, Zhao H, Zhao X. Attapulgite-doped electrospun PCL scaffolds for enhanced bone regeneration in rat cranium defects. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2022; 133:112656. [PMID: 35034813 DOI: 10.1016/j.msec.2022.112656] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 01/05/2022] [Accepted: 01/06/2022] [Indexed: 10/19/2022]
Abstract
Electrospun PCL scaffolds have been widely used for tissue engineering as they have shown great potential to mimic the structure of the natural extracellular matrix (ECM). However, the small pore size and low bioactivity of the scaffolds limit cell migration and tissue formation. In this study, PCL (polycaprolactone), PCL/PEG (polyethylene glycol), and PCL/PEG/ATP (nano-attapulgite) scaffolds were fabricated via electrospinning. To increase the porosity of the scaffolds, they were washed to remove water-soluble PEG fibers. Then the porous structure was measured using scanning electron microscopy (SEM) and atomic force microscopy (AFM), which showed an increased porosity when PEG fibers were removed in PCL/PEG and PCL/PEG/ATP scaffolds. Moreover, the mechanical properties were also analyzed in dry and wet conditions. In vitro mouse multipotent mesenchymal precursor cells were used to assess the biocompatibility of the scaffolds, and osteogenesis was analyzed using CCK-8 and real-time PCR (RT-PCR) methods. Moreover, in vivo μCT, histological and immunohistochemical analyses were conducted to evaluate new bone formation in rat cranium defect models. Washed PCL/PEG/ATP scaffolds were implanted into the cranium defects in rats for 4 or 8 weeks, better cell infiltration was observed in these scaffolds than in unwashed ones. The result demonstrated that washed PCL/PEG/ATP scaffold facilitated the differentiation of MSCs into osteoblasts compared with PCL scaffold, as proved by the increased expression of osteogenic key genes as well as Smad1, Smad4, and Smad5. Furthermore, in vivo studies demonstrated that using the ATP-doped electrospun PCL scaffold can improve the bone regeneration of rat cranium defects. Particularly, the PCL/ATP-30% scaffold has the best effect compared to the other scaffolds. The enhanced osteogenesis and bone repair were related to the PCL/ATP activated BMP/Smad signaling pathway.
Collapse
Affiliation(s)
- Ting Dai
- Medical Research Centre, Changzhou Second People's Hospital Affiliated to Nanjing Medical University, Changzhou 213164, China
| | - Jiayi Ma
- Medical Research Centre, Changzhou Second People's Hospital Affiliated to Nanjing Medical University, Changzhou 213164, China
| | - Su Ni
- Medical Research Centre, Changzhou Second People's Hospital Affiliated to Nanjing Medical University, Changzhou 213164, China
| | - Chun Liu
- Medical Research Centre, Changzhou Second People's Hospital Affiliated to Nanjing Medical University, Changzhou 213164, China
| | - Yan Wang
- Medical Research Centre, Changzhou Second People's Hospital Affiliated to Nanjing Medical University, Changzhou 213164, China
| | - Siyu Wu
- Medical Research Centre, Changzhou Second People's Hospital Affiliated to Nanjing Medical University, Changzhou 213164, China
| | - Jun Liu
- Medical Research Centre, Changzhou Second People's Hospital Affiliated to Nanjing Medical University, Changzhou 213164, China
| | - Yiping Weng
- Medical Research Centre, Changzhou Second People's Hospital Affiliated to Nanjing Medical University, Changzhou 213164, China
| | - Dong Zhou
- Medical Research Centre, Changzhou Second People's Hospital Affiliated to Nanjing Medical University, Changzhou 213164, China
| | - Ana Jimenez-Franco
- Department of Chemical and Biological Engineering, University of Sheffield, Sheffield S1 3JD, UK
| | - Hongbin Zhao
- Medical Research Centre, Changzhou Second People's Hospital Affiliated to Nanjing Medical University, Changzhou 213164, China.
| | - Xiubo Zhao
- School of Pharmacy, Changzhou University, Changzhou 213164, China; Department of Chemical and Biological Engineering, University of Sheffield, Sheffield S1 3JD, UK.
| |
Collapse
|
7
|
Zhang Y, Zhang M, Cheng D, Xu S, Du C, Xie L, Zhao W. Applications of electrospun scaffolds with enlarged pores in tissue engineering. Biomater Sci 2022; 10:1423-1447. [DOI: 10.1039/d1bm01651b] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Despite electrospinning has multiple advantages over other methods such as creating materials with superfine fiber diameter, high specific surface area, and good mechanical properties, the pore diameter of scaffolds prepared...
Collapse
|
8
|
Chen CH, Li DL, Chuang ADC, Dash BS, Chen JP. Tension Stimulation of Tenocytes in Aligned Hyaluronic Acid/Platelet-Rich Plasma-Polycaprolactone Core-Sheath Nanofiber Membrane Scaffold for Tendon Tissue Engineering. Int J Mol Sci 2021; 22:ijms222011215. [PMID: 34681872 PMCID: PMC8537129 DOI: 10.3390/ijms222011215] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Revised: 10/13/2021] [Accepted: 10/15/2021] [Indexed: 02/06/2023] Open
Abstract
To recreate the in vivo niche for tendon tissue engineering in vitro, the characteristics of tendon tissue underlines the use of biochemical and biophysical cues during tenocyte culture. Herein, we prepare core-sheath nanofibers with polycaprolactone (PCL) sheath for mechanical support and hyaluronic acid (HA)/platelet-rich plasma (PRP) core for growth factor delivery. Three types of core-sheath nanofiber membrane scaffolds (CSNMS), consisting of random HA-PCL nanofibers (Random), random HA/PRP-PCL nanofibers (Random+) or aligned HA/PRP-PCL (Align+) nanofibers, were used to study response of rabbit tenocytes to biochemical (PRP) and biophysical (fiber alignment) stimulation. The core-sheath structures as well as other pertinent properties of CSNMS have been characterized, with Align+ showing the best mechanical properties. The unidirectional growth of tenocytes, as induced by aligned fiber topography, was confirmed from cell morphology and cytoskeleton expression. The combined effects of PRP and fiber alignment in Align+ CSNMS lead to enhanced cell proliferation rates, as well as upregulated gene expression and marker protein synthesis. Another biophysical cue on tenocytes was introduced by dynamic culture of tenocyte-seeded Align+ in a bioreactor with cyclic tension stimulation. Augmented by this biophysical beacon from mechanical loading, dynamic cell culture could shorten the time for tendon maturation in vitro, with improved cell proliferation rates and tenogenic phenotype maintenance, compared to static culture. Therefore, we successfully demonstrate how combined use of biochemical/topographical cues as well as mechanical stimulation could ameliorate cellular response of tenocytes in CSNMS, which can provide a functional in vitro environmental niche for tendon tissue engineering.
Collapse
Affiliation(s)
- Chih-Hao Chen
- Department of Plastic and Reconstructive Surgery, Chang Gung Memorial Hospital at Keelung, Keelung 20401, Taiwan; (C.-H.C.); (A.D.-C.C.)
- Department of Plastic and Reconstructive Surgery and Craniofacial Research Center, Chang Gung Memorial Hospital at Linkou, Collage of Medicine, Chang Gung University, Taoyuan 33305, Taiwan
- Department of Chemical and Materials Engineering, Chang Gung University, Taoyuan 33302, Taiwan; (D.-L.L.); (B.S.D.)
| | - Dai-Ling Li
- Department of Chemical and Materials Engineering, Chang Gung University, Taoyuan 33302, Taiwan; (D.-L.L.); (B.S.D.)
| | - Andy Deng-Chi Chuang
- Department of Plastic and Reconstructive Surgery, Chang Gung Memorial Hospital at Keelung, Keelung 20401, Taiwan; (C.-H.C.); (A.D.-C.C.)
| | - Banendu Sunder Dash
- Department of Chemical and Materials Engineering, Chang Gung University, Taoyuan 33302, Taiwan; (D.-L.L.); (B.S.D.)
| | - Jyh-Ping Chen
- Department of Plastic and Reconstructive Surgery and Craniofacial Research Center, Chang Gung Memorial Hospital at Linkou, Collage of Medicine, Chang Gung University, Taoyuan 33305, Taiwan
- Department of Chemical and Materials Engineering, Chang Gung University, Taoyuan 33302, Taiwan; (D.-L.L.); (B.S.D.)
- Research Center for Food and Cosmetic Safety, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan 33305, Taiwan
- Department of Materials Engineering, Ming Chi University of Technology, New Taipei City 24301, Taiwan
- Correspondence: ; Tel.: +886-3211-8800
| |
Collapse
|
9
|
Barazesh A, Navidbakhsh M, Abouei Mehrizi A, Koosha M, Razavi Bazaz S, Li T. Simultaneous Modeling of Young's Modulus, Yield Stress, and Rupture Strain of Gelatin/Cellulose Acetate Microfibrous/Nanofibrous Scaffolds Using RSM. Front Bioeng Biotechnol 2021; 9:718718. [PMID: 34589472 PMCID: PMC8473815 DOI: 10.3389/fbioe.2021.718718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Accepted: 08/16/2021] [Indexed: 11/17/2022] Open
Abstract
Electrospinning is a promising method to fabricate bioengineered scaffolds, thanks to utilizing various types of biopolymers, flexible structures, and also the diversity of output properties. Mechanical properties are one of the major components of scaffold design to fabricate an efficacious artificial substitute for the natural extracellular matrix. Additionally, fiber orientations, as one of the scaffold structural parameters, could play a crucial role in the application of fabricated fibrous scaffolds. In this study, gelatin was used as a highly biocompatible polymer in blend with cellulose acetate (CA), a polysaccharide, to enhance the achievable range of mechanical characteristics to fabricated fibrous electrospun scaffolds. By altering input variables, such as polymers concentration, weight ratio, and mandrel rotation speed, scaffolds with various mechanical and morphological properties could be achieved. As expected, the electrospun scaffold with a higher mandrel rotation speed shows higher fiber alignment. A wide range of mechanical properties were gained through different values of polymer ratio and total concentration. A general improvement in mechanical strength was observed by increasing the concentration and CA content in the solution, but contradictory effects, such as high viscosity in more concentrated solutions, influenced the mechanical characteristics as well. A response surface method was applied on experimental results in order to describe a continuous variation of Young's modulus, yield stress, and strain at rupture. A full quadratic version of equations with the 95% confidence level was applied for the response modeling. This model would be an aid for engineers to adjust mandrel rotation speed, solution concentration, and gelatin/CA ratio to achieve desired mechanical and structural properties.
Collapse
Affiliation(s)
- Alireza Barazesh
- Tissue Engineering and Biological Systems Research Laboratory, School of Mechanical Engineering, Iran University of Science and Technology, Tehran, Iran
| | - Mahdi Navidbakhsh
- Tissue Engineering and Biological Systems Research Laboratory, School of Mechanical Engineering, Iran University of Science and Technology, Tehran, Iran
| | - Ali Abouei Mehrizi
- Department of Life Science Engineering, Faculty of New Sciences and Technologies, University of Tehran, Tehran, Iran
| | - Mojtaba Koosha
- Shandong Provincial Key Laboratory of Molecular Engineering, School of Chemistry and Chemical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China
| | - Sajad Razavi Bazaz
- School of Biomedical Engineering, University of Technology Sydney, Sydney, NSW, Australia
| | - Tianduo Li
- Shandong Provincial Key Laboratory of Molecular Engineering, School of Chemistry and Chemical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China
| |
Collapse
|
10
|
Banimohamad-Shotorbani B, Rahmani Del Bakhshayesh A, Mehdipour A, Jarolmasjed S, Shafaei H. The efficiency of PCL/HAp electrospun nanofibers in bone regeneration: a review. J Med Eng Technol 2021; 45:511-531. [PMID: 34251971 DOI: 10.1080/03091902.2021.1893396] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Electrospinning is a method which produces various nanofiber scaffolds for different tissues was attractive for researchers. Nanofiber scaffolds could be made from several biomaterials and polymers. Quality and virtues of final scaffolds depend on used biomaterials (even about single substance, the origin is effective), additives (such as some molecules, ions, drugs, and inorganic materials), electrospinning parameter (voltage, injection speed, temperature, …), etc. In addition to its benefits, which makes it more attractive is the possibility of modifications. Common biomaterials in bone tissue engineering such as poly-caprolactone (PCL), hydroxyapatite (HAp), and their important features, electrospinning nanofibers were widely studied. Related investigations indicate the critical role of even small parameters (like the concentration of PCL or HAp) in final product properties. These changes also, cause deference in cell proliferation, adhesion, differentiation, and in vivo repair process. In this review was focussed on PCL/HAp based nanofibers and additives that researchers used for scaffold improvement. Then, reviewing properties of gained nanofibers, their effect on cell behaviour, and finally, their valency in bone tissue engineering studies (in vitro and in vivo).
Collapse
Affiliation(s)
- Behnaz Banimohamad-Shotorbani
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Tissue Engineering, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Azizeh Rahmani Del Bakhshayesh
- Department of Tissue Engineering, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ahmad Mehdipour
- Department of Tissue Engineering, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Seyedhosein Jarolmasjed
- Department of Clinical Sciences, Faculty of Veterinary Medicine, University of Tabriz, Tabriz, Iran
| | - Hajar Shafaei
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Tissue Engineering, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Anatomical Sciences, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| |
Collapse
|
11
|
Sankar D, Mony U, Rangasamy J. Combinatorial effect of plasma treatment, fiber alignment and fiber scale of poly (ε-caprolactone)/collagen multiscale fibers in inducing tenogenesis in non-tenogenic media. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 127:112206. [PMID: 34225858 DOI: 10.1016/j.msec.2021.112206] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 05/18/2021] [Accepted: 05/19/2021] [Indexed: 12/20/2022]
Abstract
Tendon being a hypocellular, low vascularized tissue often requires assistance for restoration after complete tear. Tendon tissue engineering aims in the development of suitable scaffold that could support the regeneration of tendon after damage. The success of such scaffolds is dependent on its integration with the native tissue which in turn is influenced by the cell-material interaction. In this work aligned poly(ε-caprolactone)/collagen (PCL/collagen) multiscale fibers were developed and plasma treatment using argon, nitrogen and its combination was accessed for inducing tenogenic differentiation in mesenchymal stem cells. The developed fibers mimicked tendon extracellular matrix (ECM) which upon plasma treatment maintained moderate hydrophilicity. Oxygen and nitrogen containing groups were observed to be incorporated after argon and nitrogen treatment respectively. Statistically significant (p < 0.001) enhancement was observed in average and root mean square (RMS) roughness after plasma treatment with the maximum in argon treated fibers. Vitronectin was competitively (statistically significant, p < 0.05) adsorbed after argon and combination treatment whereas nitrogen treatment led to the competitive adsorption of fibronectin (statistically significant, p < 0.05). Human mesenchymal stem cells (hMSCs) showed enhanced proliferation and attachment on plasma treated fibers. Increased porosity due to the presence of sacrificial collagen nanofibers improved cell infiltration which was further enhanced upon plasma treatment. RhoA activation was observed (statistically significant, p < 0.05) on aligned PCL/collagen multiscale fibers and PCL microfibers, which proved its impact on tenogenic differentiation. Further enhancement in rhoA expression was observed on argon (p < 0.01) and combination plasma (p < 0.05) treated fibers. Tenogenic differentiation of hMSCs was enhanced (statistically significant) on argon plasma treated aligned fibers which was confirmed by the expression of scleraxis, mohawk (early markers) and tenomodulin (late marker) at protein level and mohawk, collagen I, collagen III (early markers), thrombospondin 4 and tenascin C (late markers) at gene level. Thus argon plasma treatment on aligned fibers is an effective method to induce tenogenesis even in non-tenogenic media.
Collapse
Affiliation(s)
- Deepthi Sankar
- Centre for Nanosciences and Molecular Medicine, Amrita Vishwa Vidyapeetham, Kochi 682041, India
| | - Ullas Mony
- Centre for Nanosciences and Molecular Medicine, Amrita Vishwa Vidyapeetham, Kochi 682041, India.
| | - Jayakumar Rangasamy
- Centre for Nanosciences and Molecular Medicine, Amrita Vishwa Vidyapeetham, Kochi 682041, India.
| |
Collapse
|
12
|
Borah R, Ingavle GC, Kumar A, Sandeman SR, Mikhalovsky SV. Surface-Functionalized Conducting Nanofibers for Electrically Stimulated Neural Cell Function. Biomacromolecules 2021; 22:594-611. [PMID: 33448795 DOI: 10.1021/acs.biomac.0c01445] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Strategies involving the inclusion of cell-instructive chemical and topographical cues to smart biomaterials in combination with a suitable physical stimulus may be beneficial to enhance nerve-regeneration rate. In this regard, we investigated the surface functionalization of poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV)-based electroconductive electrospun nanofibers coupled with externally applied electrical stimulus for accelerated neuronal growth potential. In addition, the voltage-dependent conductive mechanism of the nanofibers was studied in depth to interlink intrinsic conductive properties with electrically stimulated neuronal expressions. Surface functionalization was accomplished using 3-aminopropyltriethoxysilane (APTES) and 1,6-hexanediamine (HDA) as an alternative to costly biomolecule coating (e.g., collagen) for cell adhesion. The nanofibers were uniform, porous, electrically conductive, mechanically strong, and stable under physiological conditions. Surface amination boosted biocompatibility, 3T3 cell adhesion, and spreading, while the neuronal model rat PC12 cell line showed better differentiation on surface-functionalized mats compared to nonfunctionalized mats. When coupled with electrical stimulation (ES), these mats showed comparable or faster neurite formation and elongation than the collagen-coated mats with no-ES conditions. The findings indicate that surface amination in combination with ES may provide an improved strategy to faster nerve regeneration using MEH-PPV-based neural scaffolds.
Collapse
Affiliation(s)
- Rajiv Borah
- Life Sciences Division, Institute of Advanced Study in Science & Technology, Guwahati 781035, India
| | - Ganesh C Ingavle
- Symbiosis Centre for Stem Cell Research, Symbiosis International (Deemed University), Pune 412115, India
| | - Ashok Kumar
- Materials Research Laboratory, Department of Physics, Tezpur University, Tezpur 784028, India
| | - Susan R Sandeman
- Biomaterials and Medical Devices Research Group, School of Pharmacy and Biomolecular Sciences, Huxley Building, University of Brighton, Brighton BN2 4GJ, United Kingdom
| | - Sergey V Mikhalovsky
- ANAMAD Ltd, Sussex Innovation Centre, Science Park Square, Falmer, Brighton BN1 9SB, United Kingdom.,Chuiko Institute of Surface Chemistry, National Academy of Sciences of Ukraine, 17, General Naumov street, Kyiv 03164, Ukraine
| |
Collapse
|
13
|
Zhang W, He Z, Han Y, Jiang Q, Zhan C, Zhang K, Li Z, Zhang R. Structural design and environmental applications of electrospun nanofibers. COMPOSITES. PART A, APPLIED SCIENCE AND MANUFACTURING 2020; 137:106009. [PMID: 32834735 PMCID: PMC7291996 DOI: 10.1016/j.compositesa.2020.106009] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 05/27/2020] [Accepted: 06/08/2020] [Indexed: 05/06/2023]
Abstract
Nanofibers have attracted extensive attention and been applied in various fields due to their high aspect ratio, high specific surface area, flexibility, structural abundance, etc. The electrospinning method is one of the most promising and effective ways to produce nanofibers. The electrospun nanofibers-based films and membranes have already been demonstrated to possess small pore sizes, larges specific surface area, and can be grafted with different functionalities to adapt to various purposes. The environmental applications of nanofibers are one of the essential application fields, and great achievements have been made in this field. To well summarize the development of nanofibers and their environmental applications, we review the nanofiber fabrication methods, advanced fiber structures, and their applications in the field of air filtration, heavy metal removal, and self-cleaning surface. We hope this review and summary can provide readers a comprehensive understanding of the structural design and environmental applications of electrospun nanofibers.
Collapse
|
14
|
Chor A, Gonçalves RP, Costa AM, Farina M, Ponche A, Sirelli L, Schrodj G, Gree S, de Andrade LR, Anselme K, Dias ML. In Vitro Degradation of Electrospun Poly(Lactic-Co-Glycolic Acid) (PLGA) for Oral Mucosa Regeneration. Polymers (Basel) 2020; 12:polym12081853. [PMID: 32824776 PMCID: PMC7465081 DOI: 10.3390/polym12081853] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2020] [Revised: 08/12/2020] [Accepted: 08/13/2020] [Indexed: 12/26/2022] Open
Abstract
Poly(lactic-co-glycolic acid) (PLGA) has been used in the field of tissue engineering as a scaffold due to its good biocompatibility, biodegradability and mechanical strength. With the aim to explore the degradability of PLGA electrospun nonwoven structures for oral mucosa tissue engineering applications, non-irradiated and gamma irradiated nonwovens were immersed in three different solutions, in which simulated body fluid (SBF) and artificial saliva are important for future oral mucosa tissue engineering. The nonwovens were immersed for 7, 15 and 30 days in SBF, culture media (DMEM) and artificial saliva at 37 °C. Before immersion in the solutions, the dosage of 15 kGy was applied for sterilization in one assay and compared with non-irradiated samples at the same timepoints. Samples were characterized using different techniques such as scanning electron microscopy (SEM), differential scanning calorimetric (DSC) and gel permeation chromatography (GPC) to evaluate the nonwoven degradation and Fourier-transform infrared spectroscopy (FTIR) to evaluate the chain scissions. Our results showed that PLGA nonwovens were constituted by semicrystalline fibers with moderate degradation properties up to thirty days. The non-irradiated samples exhibited slower kinetics of degradation than irradiated nonwovens. For immersion times longer than 7 days in the three different solutions, the mean diameter of irradiated fibers stayed in the same range, but significantly different from the control sample. On non-irradiated samples, the degradation kinetics was slower and the plateau in the diameter value was only attained after 30 days of immersion in the fluids. Plasticization (fluid absorption into the fiber structure) occurred in the bulk material, as confirmed by a decrease in Tg observed by DSC analyses of non-irradiated and irradiated nonwovens, in comparison with the respective controls. In addition, artificial saliva showed a higher capacity of influencing PLGA crystallization than SBF and DMEM. FTIR analyses showed typical PLGA chemical functional groups changes. These results will be important for future application of those PLGA electrospun nonwovens for oral mucosa regeneration.
Collapse
Affiliation(s)
- Ana Chor
- Biomineralization Laboratory, Institute of Biomedical Sciences, Federal University of Rio de Janeiro, Rio de Janeiro 21941-902, Brazil; (A.C.); (A.M.C.); (M.F.); (L.R.d.A.)
| | - Raquel Pires Gonçalves
- Institute of Macromolecules Professor Eloisa Mano, Federal University of Rio de Janeiro, Rio de Janeiro 21941-598, Brazil; (R.P.G.); (L.S.)
| | - Andrea Machado Costa
- Biomineralization Laboratory, Institute of Biomedical Sciences, Federal University of Rio de Janeiro, Rio de Janeiro 21941-902, Brazil; (A.C.); (A.M.C.); (M.F.); (L.R.d.A.)
| | - Marcos Farina
- Biomineralization Laboratory, Institute of Biomedical Sciences, Federal University of Rio de Janeiro, Rio de Janeiro 21941-902, Brazil; (A.C.); (A.M.C.); (M.F.); (L.R.d.A.)
| | - Arnaud Ponche
- The Mulhouse Materials Science Institute (IS2M), CNRS, University of Haute-Alsace, CNRS, UMR 7361, F-68100 Mulhouse, France; (A.P.); (G.S.); (S.G.); (K.A.)
- University of Strasbourg, F-67081 Strasbourg, France
| | - Lys Sirelli
- Institute of Macromolecules Professor Eloisa Mano, Federal University of Rio de Janeiro, Rio de Janeiro 21941-598, Brazil; (R.P.G.); (L.S.)
| | - Gautier Schrodj
- The Mulhouse Materials Science Institute (IS2M), CNRS, University of Haute-Alsace, CNRS, UMR 7361, F-68100 Mulhouse, France; (A.P.); (G.S.); (S.G.); (K.A.)
- University of Strasbourg, F-67081 Strasbourg, France
| | - Simon Gree
- The Mulhouse Materials Science Institute (IS2M), CNRS, University of Haute-Alsace, CNRS, UMR 7361, F-68100 Mulhouse, France; (A.P.); (G.S.); (S.G.); (K.A.)
- University of Strasbourg, F-67081 Strasbourg, France
| | - Leonardo Rodrigues de Andrade
- Biomineralization Laboratory, Institute of Biomedical Sciences, Federal University of Rio de Janeiro, Rio de Janeiro 21941-902, Brazil; (A.C.); (A.M.C.); (M.F.); (L.R.d.A.)
| | - Karine Anselme
- The Mulhouse Materials Science Institute (IS2M), CNRS, University of Haute-Alsace, CNRS, UMR 7361, F-68100 Mulhouse, France; (A.P.); (G.S.); (S.G.); (K.A.)
- University of Strasbourg, F-67081 Strasbourg, France
| | - Marcos Lopes Dias
- Institute of Macromolecules Professor Eloisa Mano, Federal University of Rio de Janeiro, Rio de Janeiro 21941-598, Brazil; (R.P.G.); (L.S.)
- Correspondence:
| |
Collapse
|
15
|
Tissue Ingrowth Markedly Reduces Mechanical Anisotropy and Stiffness in Fibre Direction of Highly Aligned Electrospun Polyurethane Scaffolds. Cardiovasc Eng Technol 2020; 11:456-468. [PMID: 32613599 DOI: 10.1007/s13239-020-00475-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Accepted: 06/25/2020] [Indexed: 12/26/2022]
Abstract
PURPOSE The lack of long-term patency of synthetic vascular grafts currently available on the market has directed research towards improving the performance of small diameter grafts. Improved radial compliance matching and tissue ingrowth into the graft scaffold are amongst the main goals for an ideal vascular graft. METHODS Biostable polyurethane scaffolds were manufactured by electrospinning and implanted in subcutaneous and circulatory positions in the rat for 7, 14 and 28 days. Scaffold morphology, tissue ingrowth, and mechanical properties of the scaffolds were assessed before implantation and after retrieval. RESULTS Tissue ingrowth after 24 days was 96.5 ± 2.3% in the subcutaneous implants and 77.8 ± 5.4% in the circulatory implants. Over the 24 days implantation, the elastic modulus at 12% strain decreased by 59% in direction of the fibre alignment whereas it increased by 1379% transverse to the fibre alignment of the highly aligned scaffold of the subcutaneous implants. The lesser aligned scaffold of the circulatory graft implants exhibited an increase of the elastic modulus at 12% strain by 77% in circumferential direction. CONCLUSION Based on the observations, it is proposed that the mechanism underlying the softening of the highly aligned scaffold in the predominant fibre direction is associated with scaffold compaction and local displacement of fibres by the newly formed tissue. The stiffening of the scaffold, observed transverse to highly aligned fibres and for more a random fibre distribution, represents the actual mechanical contribution of the tissue that developed in the scaffold.
Collapse
|
16
|
Zhao H, Tang J, Zhou D, Weng Y, Qin W, Liu C, Lv S, Wang W, Zhao X. Electrospun Icariin-Loaded Core-Shell Collagen, Polycaprolactone, Hydroxyapatite Composite Scaffolds for the Repair of Rabbit Tibia Bone Defects. Int J Nanomedicine 2020; 15:3039-3056. [PMID: 32431500 PMCID: PMC7200251 DOI: 10.2147/ijn.s238800] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Accepted: 04/08/2020] [Indexed: 12/21/2022] Open
Abstract
Background Electrospinning is a widely used technology that can produce scaffolds with high porosity and surface area for bone regeneration. However, the small pore sizes in electrospun scaffolds constrain cell growth and tissue-ingrowth. In this study, novel drug-loading core-shell scaffolds were fabricated via electrospinning and freeze drying to facilitate the repair of tibia bone defects in rabbit models. Materials and Methods The collagen core scaffolds were freeze-dried containing icariin (ICA)-loaded chitosan microspheres. The shell scaffolds were electrospun using collagen, polycaprolactone and hydroxyapatite materials to form CPH composite scaffolds with the ones containing ICA microspheres named CPHI. The core-shell scaffolds were then cross-linked by genipin. The morphology, microstructure, physical and mechanical properties of the scaffolds were assessed. Rat marrow mesenchymal stem cells from the wistar rat were cultured with the scaffolds. The cell adhesion and proliferation were analysed. Adult rabbit models with tibial plateau defects were used to evaluate the performance of these scaffolds in repairing the bone defects over 4 to 12 weeks. Results The results reveal that the novel drug-loading core-shell scaffolds were successfully fabricated, which showed good physical and chemical properties and appropriate mechanical properties. Furthermore, excellent cells attachment was observed on the CPHI scaffolds. The results from radiography, micro-computed tomography, histological and immunohistochemical analysis demonstrated that abundant new bones were formed on the CPHI scaffolds. Conclusion These new core-shell composite scaffolds have great potential for bone tissue engineering applications and may lead to effective bone regeneration and repair.
Collapse
Affiliation(s)
- Hongbin Zhao
- Medical Research Centre, Changzhou Second People's Hospital Affiliated to Nanjing Medical University, Changzhou 213164, People's Republic of China
| | - Junjie Tang
- Medical Research Centre, Changzhou Second People's Hospital Affiliated to Nanjing Medical University, Changzhou 213164, People's Republic of China
| | - Dong Zhou
- Medical Research Centre, Changzhou Second People's Hospital Affiliated to Nanjing Medical University, Changzhou 213164, People's Republic of China
| | - Yiping Weng
- Medical Research Centre, Changzhou Second People's Hospital Affiliated to Nanjing Medical University, Changzhou 213164, People's Republic of China
| | - Wen Qin
- Medical Research Centre, Changzhou Second People's Hospital Affiliated to Nanjing Medical University, Changzhou 213164, People's Republic of China
| | - Chun Liu
- Medical Research Centre, Changzhou Second People's Hospital Affiliated to Nanjing Medical University, Changzhou 213164, People's Republic of China
| | - Songwei Lv
- School of Pharmaceutical Engineering and Life Science, Changzhou University, Changzhou 213164, People's Republic of China
| | - Wei Wang
- Medical School, Hexi University, Zhangye 730041, People's Republic of China
| | - Xiubo Zhao
- School of Pharmaceutical Engineering and Life Science, Changzhou University, Changzhou 213164, People's Republic of China.,Department of Chemical and Biological Engineering, University of Sheffield, Sheffield S1 3JD, UK
| |
Collapse
|
17
|
Multi-walled carbon nanotube-incorporating electrospun composite fibrous mats for controlled drug release profile. Int J Pharm 2019; 568:118513. [DOI: 10.1016/j.ijpharm.2019.118513] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 07/08/2019] [Accepted: 07/09/2019] [Indexed: 12/20/2022]
|
18
|
Thakkar SH, Di Luca A, Zaccaria S, Baaijens FPT, Bouten CVC, Dankers PYW. Dual Electrospun Supramolecular Polymer Systems for Selective Cell Migration. Macromol Biosci 2018; 18:e1800004. [PMID: 29870589 DOI: 10.1002/mabi.201800004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Revised: 03/23/2018] [Indexed: 11/10/2022]
Abstract
Dual electrospinning can be used to make multifunctional scaffolds for regenerative medicine applications. Here, two supramolecular polymers with different material properties are electrospun simultaneously to create a multifibrous mesh. Bisurea (BU)-based polycaprolactone, an elastomer providing strength to the mesh, and ureido-pyrimidinone (UPy) modified poly(ethylene glycol) (PEG), a hydrogelator, introducing the capacity to deliver compounds upon swelling. The dual spun scaffolds are modularly tuned by mixing UPyPEG hydrogelators with different polymer lengths, to control swelling of the hydrogel fiber, while maintaining the mechanical properties of the scaffold. Stromal cell derived factor 1 alpha (SDF1α) peptides are embedded in the UPyPEG fibers. The swelling and erosion of UPyPEG increase void spaces and released the SDF1α peptide. The functionalized scaffolds demonstrate preferential lymphocyte recruitment proposed to be created by a gradient formed by the released SDF1α peptide. This delivery approach offers the potential to develop multifibrous scaffolds with various functions.
Collapse
Affiliation(s)
- Shraddha H Thakkar
- Department of Biomedical Engineering, Soft Tissue Biomechanics & Tissue Engineering and Institute for Complex Molecular Systems, Eindhoven University of Technology, PO Box 513, 5600 MB, Eindhoven, The Netherlands
| | - Andrea Di Luca
- Department of Biomedical Engineering, Soft Tissue Biomechanics & Tissue Engineering and Institute for Complex Molecular Systems, Eindhoven University of Technology, PO Box 513, 5600 MB, Eindhoven, The Netherlands
| | - Sabrina Zaccaria
- Laboratory of Chemical Biology and Institute for Complex Molecular Systems, Department of Biomedical Engineering, Eindhoven University of Technology, PO Box 513, 5600 MB, Eindhoven, The Netherlands
| | - Frank P T Baaijens
- Department of Biomedical Engineering, Soft Tissue Biomechanics & Tissue Engineering and Institute for Complex Molecular Systems, Eindhoven University of Technology, PO Box 513, 5600 MB, Eindhoven, The Netherlands
| | - Carlijn V C Bouten
- Department of Biomedical Engineering, Soft Tissue Biomechanics & Tissue Engineering and Institute for Complex Molecular Systems, Eindhoven University of Technology, PO Box 513, 5600 MB, Eindhoven, The Netherlands
| | - Patricia Y W Dankers
- Laboratory of Chemical Biology and Institute for Complex Molecular Systems, Department of Biomedical Engineering, Eindhoven University of Technology, PO Box 513, 5600 MB, Eindhoven, The Netherlands
| |
Collapse
|
19
|
Strategic Design and Fabrication of Biomimetic 3D Scaffolds: Unique Architectures of Extracellular Matrices for Enhanced Adipogenesis and Soft Tissue Reconstruction. Sci Rep 2018; 8:5696. [PMID: 29632328 PMCID: PMC5890269 DOI: 10.1038/s41598-018-23966-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Accepted: 03/23/2018] [Indexed: 01/16/2023] Open
Abstract
The higher rate of soft tissue impairment due to lumpectomy or other trauma greatly requires the restoration of the irreversibly lost subcutaneous adipose tissues. The nanofibers fabricated by conventional electrospinning provide only a superficial porous structure due to its sheet like 2D structure and thereby hinder the cell infiltration and differentiation throughout the scaffolds. Thus we developed a novel electrospun 3D membrane using the zwitterionic poly (carboxybetaine-co-methyl methacrylate) co-polymer (CMMA) through electrostatic repulsion based electrospinning for soft tissue engineering. The inherent charges in the CMMA will aid the nanofiber to directly transform into a semiconductor and thereby transfer the immense static electricity from the grounded collector and will impart greater fluffiness to the scaffolds. The results suggest that the fabricated 3D nanofiber (CMMA 3NF) scaffolds possess nanofibers with larger inter connected pores and less dense structure compared to the conventional 2D scaffolds. The CMMA 3NF exhibits significant cues of soft tissue engineering such as enhanced biocompatibility as well as the faster regeneration of cells. Moreover the fabricated 3D scaffolds greatly assist the cells to develop into its stereoscopic topographies with an enhanced adipogenic property.
Collapse
|
20
|
Sfakis L, Kamaldinov T, Khmaladze A, Hosseini ZF, Nelson DA, Larsen M, Castracane J. Mesenchymal Cells Affect Salivary Epithelial Cell Morphology on PGS/PLGA Core/Shell Nanofibers. Int J Mol Sci 2018; 19:ijms19041031. [PMID: 29596382 PMCID: PMC5979364 DOI: 10.3390/ijms19041031] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Revised: 03/21/2018] [Accepted: 03/28/2018] [Indexed: 12/15/2022] Open
Abstract
Engineering salivary glands is of interest due to the damaging effects of radiation therapy and the autoimmune disease Sjögren’s syndrome on salivary gland function. One of the current problems in tissue engineering is that in vitro studies often fail to predict in vivo regeneration due to failure of cells to interact with scaffolds and of the single cell types that are typically used for these studies. Although poly (lactic co glycolic acid) (PLGA) nanofiber scaffolds have been used for in vitro growth of epithelial cells, PLGA has low compliance and cells do not penetrate the scaffolds. Using a core-shell electrospinning technique, we incorporated poly (glycerol sebacate) (PGS) into PLGA scaffolds to increase the compliance and decrease hydrophobicity. PGS/PLGA scaffolds promoted epithelial cell penetration into the scaffold and apical localization of tight junction proteins, which is necessary for epithelial cell function. Additionally, co-culture of the salivary epithelial cells with NIH3T3 mesenchymal cells on PGS/PLGA scaffolds facilitated epithelial tissue reorganization and apical localization of tight junction proteins significantly more than in the absence of the mesenchyme. These data demonstrate the applicability of PGS/PLGA nanofibers for epithelial cell self-organization and facilitation of co-culture cell interactions that promote tissue self-organization in vitro.
Collapse
Affiliation(s)
- Lauren Sfakis
- Colleges of Nanoscale Science and Engineering, SUNY Polytechnic Institute, Albany, NY 12203, USA.
| | - Tim Kamaldinov
- Colleges of Nanoscale Science and Engineering, SUNY Polytechnic Institute, Albany, NY 12203, USA.
| | - Alexander Khmaladze
- Department of Physics, University at Albany, State University of New York, Albany, NY 12222, USA.
| | - Zeinab F Hosseini
- Department of Biological Sciences, University at Albany, State University of New York, Albany, NY 12222, USA.
| | - Deirdre A Nelson
- Department of Biological Sciences, University at Albany, State University of New York, Albany, NY 12222, USA.
| | - Melinda Larsen
- Department of Biological Sciences, University at Albany, State University of New York, Albany, NY 12222, USA.
| | - James Castracane
- Colleges of Nanoscale Science and Engineering, SUNY Polytechnic Institute, Albany, NY 12203, USA.
| |
Collapse
|
21
|
Young BM, Shankar K, Allen BP, Pouliot RA, Schneck MB, Mikhaiel NS, Heise RL. Electrospun Decellularized Lung Matrix Scaffold for Airway Smooth Muscle Culture. ACS Biomater Sci Eng 2017; 3:3480-3492. [DOI: 10.1021/acsbiomaterials.7b00384] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Bethany M. Young
- Department
of Biomedical Engineering, Virginia Commonwealth University, 800 E. Leigh
Street, Room 1071, Richmond, Virginia 23219, United States
| | - Keerthana Shankar
- Department
of Biomedical Engineering, Virginia Commonwealth University, 800 E. Leigh
Street, Room 1071, Richmond, Virginia 23219, United States
| | - Brittany P. Allen
- Department
of Biomedical Engineering, Virginia Commonwealth University, 800 E. Leigh
Street, Room 1071, Richmond, Virginia 23219, United States
| | - Robert A. Pouliot
- Department
of Biomedical Engineering, Virginia Commonwealth University, 800 E. Leigh
Street, Room 1071, Richmond, Virginia 23219, United States
| | - Matthew B. Schneck
- Department
of Biomedical Engineering, Virginia Commonwealth University, 800 E. Leigh
Street, Room 1071, Richmond, Virginia 23219, United States
| | - Nabil S. Mikhaiel
- Department
of Biomedical Engineering, Virginia Commonwealth University, 800 E. Leigh
Street, Room 1071, Richmond, Virginia 23219, United States
| | - Rebecca L. Heise
- Department
of Biomedical Engineering, Virginia Commonwealth University, 800 E. Leigh
Street, Room 1071, Richmond, Virginia 23219, United States
- Department
of Physiology and Biophysics, Virginia Commonwealth University School of Medicine, 1101 East Marshall Street, Richmond, Virginia 23298, United States
| |
Collapse
|
22
|
Electrospun poly-l-lactide scaffold for the controlled and targeted delivery of a synthetically obtained Diclofenac prodrug to treat actinic keratosis. Acta Biomater 2017; 52:187-196. [PMID: 27816622 DOI: 10.1016/j.actbio.2016.11.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Revised: 10/06/2016] [Accepted: 11/01/2016] [Indexed: 12/12/2022]
Abstract
Actinic Keratosis' (AKs) are small skin lesions that are related to a prolonged sun-damage, which can develop into invasive squamous cell carcinoma (SCC) when left untreated. Effective, specific and well tolerable therapies to cure AKs are still of great interest. Diclofenac (DCF) is the current gold standard for the local treatment of AKs in terms of costs, effectiveness, side effects and tolerability. In this work, an electrospun polylactic acid (PLA) scaffold loaded with a synthetic DCF prodrug was developed and characterized. Specifically, the prodrug was successfully synthetized by binding DCF to a glycine residue via solid phase peptide synthesis (SPPS) and then incorporated in an electrospun PLA scaffold. The drug encapsulation was verified using multiphoton microscopy (MPM) and its scaffold release was spectrophotometrically monitored and confirmed with MPM. The scaffold was further characterized with scanning electron microscopy (SEM), tensile testing and contact angle measurements. Its biocompatibility was verified by performing a cell proliferation assay and compared to PLA scaffolds containing the same amount of DCF sodium salt (DCFONa). Finally, the effect of the electrospun scaffolds on human dermal fibroblasts (HDFs) morphology and metabolism was investigated by combining MPM with fluorescence lifetime imaging microscopy (FLIM). The obtained results suggest that the obtained scaffold could be suitable for the controlled and targeted delivery of the synthesized prodrug for the treatment of AKs. STATEMENT OF SIGNIFICANCE Electrospun scaffolds are of growing interest as materials for a controlled drug delivery. In this work, an electrospun polylactic acid scaffold containing a synthetically obtained Diclofenac prodrug is proposed as a novel substrate for the topical treatment of actinic keratosis. A controlled drug delivery targeted to the area of interest could enhance the efficacy of the therapy and favor the healing process. The prodrug was synthesized via solid phase, employing a clean and versatile approach to obtain Diclofenac derivatives. Here, we used multiphoton microscopy to image drug encapsulation within the fibrous scaffold and fluorescence lifetime imaging microscopy to investigate Diclofenac effects and potential mechanisms of action.
Collapse
|
23
|
Gentile P, Ferreira AM, Callaghan JT, Miller CA, Atkinson J, Freeman C, Hatton PV. Multilayer Nanoscale Encapsulation of Biofunctional Peptides to Enhance Bone Tissue Regeneration In Vivo. Adv Healthc Mater 2017; 6. [PMID: 28169513 DOI: 10.1002/adhm.201601182] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Revised: 01/08/2017] [Indexed: 11/09/2022]
Abstract
Bone tissue healing is a dynamic process that is initiated by the recruitment of osteoprogenitor cells followed by their migration, proliferation, differentiation, and development of a mineralizing extracellular matrix. The work aims to manufacture a functionalized porous membrane that stimulates early events in bone healing for initiating a regenerative cascade. Layer-by-layer (LbL) assembly is proposed to modify the surface of osteoconductive electrospun meshes, based on poly(lactic-co-glycolic acid) and nanohydroxyapatite, by using poly(allylamine hydrochloride) and poly(sodium 4-styrenesulfonate) as polyelectrolytes. Molecular cues are incorporated by grafting peptide fragments into the discrete nanolayers. KRSR (lysine-arginine-serine-arginine) sequence is grafted to enhance cell adhesion and proliferation, NSPVNSKIPKACCVPTELSAI to guide bone marrow mesenchymal stem cells differentiation in osteoblasts, and FHRRIKA (phenylalanine-histidine-arginine-arginine-isoleucine-lysine-alanine) to improve mineralization matrix formation. Scanning electron microscopy, infrared spectroscopy, and X-ray photoelectron spectroscopy demonstrate the successful surface functionalization. Furthermore, the peptide incorporation enhances cellular processes, with good viability and significant increase of alkaline phosphatase activity, osteopontin, and osteocalcin. The functionalized membrane induces a favorable in vivo response after implantation for four weeks in nonhealing rat calvarial defect model. It is concluded that the multilayer nanoencapsulation of biofunctional peptides using LbL approach has significant potential as innovative manufacturing technique to improve bone regeneration in orthopedic and craniofacial medical devices.
Collapse
Affiliation(s)
- Piergiorgio Gentile
- School of Mechanical and Systems Engineering; Newcastle University; Claremont Road Newcastle upon Tyne NE1 7RU UK
| | - Ana Marina Ferreira
- School of Mechanical and Systems Engineering; Newcastle University; Claremont Road Newcastle upon Tyne NE1 7RU UK
| | - Jill T. Callaghan
- School of Clinical Dentistry; University of Sheffield; 19 Claremont Crescent Sheffield S10 2TA UK
| | - Cheryl A. Miller
- School of Clinical Dentistry; University of Sheffield; 19 Claremont Crescent Sheffield S10 2TA UK
| | - Joss Atkinson
- School of Clinical Dentistry; University of Sheffield; 19 Claremont Crescent Sheffield S10 2TA UK
| | - Christine Freeman
- School of Clinical Dentistry; University of Sheffield; 19 Claremont Crescent Sheffield S10 2TA UK
| | - Paul V. Hatton
- School of Clinical Dentistry; University of Sheffield; 19 Claremont Crescent Sheffield S10 2TA UK
| |
Collapse
|
24
|
Hejazi F, Mirzadeh H, Contessi N, Tanzi MC, Faré S. Novel class of collector in electrospinning device for the fabrication of 3D nanofibrous structure for large defect load-bearing tissue engineering application. J Biomed Mater Res A 2017; 105:1535-1548. [DOI: 10.1002/jbm.a.35822] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2016] [Revised: 06/06/2016] [Accepted: 06/28/2016] [Indexed: 12/13/2022]
Affiliation(s)
- Fatemeh Hejazi
- Department of Polymer Engineering and Color Technology; Amirkabir University of Technology (Tehran Polytechnic); 424 Hafez Avenue Tehran Iran
- Department of Chemistry; Materials and Chemical Engineering ‘‘G. Natta’’; Politecnico Di Milano, P.Zza Leonardo Da Vinci 32 Milan 20133 Italy
| | - Hamid Mirzadeh
- Department of Polymer Engineering and Color Technology; Amirkabir University of Technology (Tehran Polytechnic); 424 Hafez Avenue Tehran Iran
| | - Nicola Contessi
- Department of Chemistry; Materials and Chemical Engineering ‘‘G. Natta’’; Politecnico Di Milano, P.Zza Leonardo Da Vinci 32 Milan 20133 Italy
| | - Maria Cristina Tanzi
- Department of Chemistry; Materials and Chemical Engineering ‘‘G. Natta’’; Politecnico Di Milano, P.Zza Leonardo Da Vinci 32 Milan 20133 Italy
| | - Silvia Faré
- Department of Chemistry; Materials and Chemical Engineering ‘‘G. Natta’’; Politecnico Di Milano, P.Zza Leonardo Da Vinci 32 Milan 20133 Italy
| |
Collapse
|
25
|
Moazeni N, Semnani D, Rafeinia M, Hasani H, Naeimi M, Sadrjahani M. The effect of electrospinning parameters on the compliance behavior of electrospun polyurethane tube for artificial common bile duct. POLYMER SCIENCE SERIES A 2017. [DOI: 10.1134/s0965545x17010114] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
26
|
Santos D, Wieringa P, Moroni L, Navarro X, Valle JD. PEOT/PBT Guides Enhance Nerve Regeneration in Long Gap Defects. Adv Healthc Mater 2017; 6. [PMID: 27973708 DOI: 10.1002/adhm.201600298] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Revised: 11/07/2016] [Indexed: 12/21/2022]
Abstract
Development of new nerve guides is required for replacing autologous nerve grafts for the repair of long gap defects after nerve injury. A nerve guide comprised only of electrospun fibers able to bridge a critical (15 mm) nerve gap in a rat animal model is reported for the first time. The nerve conduits are made of poly(ethylene oxide terephthalate) and poly(butylene terephthalate) (PEOT/PBT), a biocompatible copolymer composed of alternating amorphous, hydrophilic poly(ethylene oxide terephthalate), and crystalline, hydrophobic poly(butylene terephthalate) segments. These guides show suitable mechanical properties, high porosity, and fibers aligned in the longitudinal axis of the guide. In vitro studies show that both neurites and Schwann cells exhibit growth alignment with PA fibers. In vivo studies reveal that, after rat sciatic nerve transection and repair with PEOT/PBT guides, axons grow occupying a larger area compared to silicone tubes. Moreover, after repair of limiting (10 mm) and critical (15 mm) nerve gaps, PEOT/PBT guides significantly increase the percentage of regenerated nerves, the number of regenerated myelinated axons, and improve motor, sensory, and autonomic reinnervation in both gaps. This nerve conduit design combines the properties of PEOT/PBT with electrospun structure, demonstrating that nerve regeneration through long gaps can be achieved through the design of instructive biomaterial constructs.
Collapse
Affiliation(s)
- Daniel Santos
- Institute of Neurosciences; Department of Cell Biology; Physiology and Immunology; Universitat Autònoma de Barcelona, and CIBERNED; 08193 Bellaterra Spain
| | - Paul Wieringa
- Department of Complex Tissue Regeneration; MERLN Institute; Maastricht University; 6229 ER Maastricht The Netherlands
| | - Lorenzo Moroni
- Department of Complex Tissue Regeneration; MERLN Institute; Maastricht University; 6229 ER Maastricht The Netherlands
| | - Xavier Navarro
- Institute of Neurosciences; Department of Cell Biology; Physiology and Immunology; Universitat Autònoma de Barcelona, and CIBERNED; 08193 Bellaterra Spain
| | - Jaume Del Valle
- Institute of Neurosciences; Department of Cell Biology; Physiology and Immunology; Universitat Autònoma de Barcelona, and CIBERNED; 08193 Bellaterra Spain
| |
Collapse
|
27
|
Hejazi F, Mirzadeh H. Roll-designed 3D nanofibrous scaffold suitable for the regeneration of load bearing bone defects. Prog Biomater 2016; 5:199-211. [PMID: 27995587 PMCID: PMC5301453 DOI: 10.1007/s40204-016-0058-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2016] [Accepted: 11/07/2016] [Indexed: 12/24/2022] Open
Abstract
In this work, an innovative and easy method for the fabrication of 3D scaffold from 2D electrospun structures is introduced. For this aim, coral microparticles were fixed inside the nanofibrous PCL/Gelatin mat and the obtained structure was post assembled into a cylindrical design. Scaffold fabrication procedure is described in detail and morphological properties, physical and mechanical characteristics and in vitro assessments of the prepared scaffold are reported. Presences of coral microparticles in the structure led to the formation of empty spaces (3D pores) between nanofibrous layers which in turn prevent the compact accumulation of nanofibers. Post-assembly of the obtained nanofibrous coral-loaded structures makes it possible to prepare a scaffold with any desired dimension (diameter and height). Existence of coral particles within the nanofibrous mats resulted in distant placement of layers toward each other in the assembling step, which in turn create vacancy in the structure for cellular migration and fluid and nutrients exchange of the scaffold with the surrounding environment. Cell morphology within the scaffolds is investigated and cytotoxicity and cytocompatibility of the structure is evaluated using Alamar blue assay. Enhancement in mineralization of the seeded cells within the prepared coral-loaded scaffolds is demonstrated by the use of SEM-EDX. Performed compression mechanical test revealed excellent modulus and stiffness values for the cylindrical samples which are comparable to those of natural bone tissue.
Collapse
Affiliation(s)
- Fatemeh Hejazi
- Department of Polymer Engineering and Color Technology, Amirkabir University of Technology (Tehran Polytechnic), 424 Hafez Avenue, 1591634311, Tehran, Iran
| | - Hamid Mirzadeh
- Department of Polymer Engineering and Color Technology, Amirkabir University of Technology (Tehran Polytechnic), 424 Hafez Avenue, 1591634311, Tehran, Iran.
| |
Collapse
|
28
|
Nair PA, Parameswaran R. Synthesis, Characterization, and Electrospinning of Calcium-Containing Polyurethane Urea. ADVANCES IN POLYMER TECHNOLOGY 2016. [DOI: 10.1002/adv.21559] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Priya A. Nair
- Biomedical Technology Wing; Sree Chitra Tirunal Institute for Medical Sciences and Technology; Poojapura Thiruvananthapuram 695 012 India
| | - Ramesh Parameswaran
- Biomedical Technology Wing; Sree Chitra Tirunal Institute for Medical Sciences and Technology; Poojapura Thiruvananthapuram 695 012 India
| |
Collapse
|
29
|
Sunthornvarabhas J, Liengprayoon S, Aouf C, Rungjang W, Sangseethong K, Lecomte J, Suwonsichon T, Boonreungrod C, Dubreucq E, Fulcrand H. Tara tannin as active ingredient in electrospun fibrous delivery system. J Appl Polym Sci 2016. [DOI: 10.1002/app.43646] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Jackapon Sunthornvarabhas
- National Center for Genetic Engineering and Biotechnology; Cassava and Starch Technology Research Unit; Bangkok 10900 Thailand
| | - Siriluck Liengprayoon
- Kasetsart Agricultural and Agro-Industrial Product Improvement Institute, Kasetsart University; Bangkok Thailand
| | - Chahinez Aouf
- UMR1083, INRA, Montpellier SupAgro, University Montpellier 1; 2 place Viala 34060 Montpellier Cedex 2 France
| | - Walaiporn Rungjang
- Department of Biotechnology, Faculty of Agro-Industry; Kasetsart University; Bangkok 10900 Thailand
| | - Kunruedee Sangseethong
- National Center for Genetic Engineering and Biotechnology; Cassava and Starch Technology Research Unit; Bangkok 10900 Thailand
| | - Jerome Lecomte
- UMR 1208 IATE, CIRAD Dept. Persyst; TA B-62/16, 73 Rue JF Breton 34398 Montpellier Cedex 5 France
| | | | | | - Eric Dubreucq
- UMR 1208 IATE, CIRAD Dept. Persyst; TA B-62/16, 73 Rue JF Breton 34398 Montpellier Cedex 5 France
| | - Helene Fulcrand
- UMR1083, INRA, Montpellier SupAgro, University Montpellier 1; 2 place Viala 34060 Montpellier Cedex 2 France
| |
Collapse
|
30
|
Voorneveld J, Oosthuysen A, Franz T, Zilla P, Bezuidenhout D. Dual electrospinning with sacrificial fibers for engineered porosity and enhancement of tissue ingrowth. J Biomed Mater Res B Appl Biomater 2016; 105:1559-1572. [DOI: 10.1002/jbm.b.33695] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2015] [Revised: 03/24/2016] [Accepted: 04/06/2016] [Indexed: 01/19/2023]
Affiliation(s)
- Jason Voorneveld
- Cardiovascular Research Unit; Division of Cardiothoracic Surgery; MRC IUCHRU, University of Cape Town; Cape Town 7925 South Africa
| | - Anel Oosthuysen
- Cardiovascular Research Unit; Division of Cardiothoracic Surgery; MRC IUCHRU, University of Cape Town; Cape Town 7925 South Africa
| | - Thomas Franz
- Division of Biomedical Engineering; Department of Human Biology; University of Cape Town; Cape Town 7925 South Africa
| | - Peter Zilla
- Cardiovascular Research Unit; Division of Cardiothoracic Surgery; MRC IUCHRU, University of Cape Town; Cape Town 7925 South Africa
| | - Deon Bezuidenhout
- Cardiovascular Research Unit; Division of Cardiothoracic Surgery; MRC IUCHRU, University of Cape Town; Cape Town 7925 South Africa
| |
Collapse
|
31
|
Evrova O, Houska J, Welti M, Bonavoglia E, Calcagni M, Giovanoli P, Vogel V, Buschmann J. Bioactive, Elastic, and Biodegradable Emulsion Electrospun DegraPol Tube Delivering PDGF-BB for Tendon Rupture Repair. Macromol Biosci 2016; 16:1048-63. [DOI: 10.1002/mabi.201500455] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Revised: 03/04/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Olivera Evrova
- Division of Plastic Surgery and Hand Surgery; University Hospital Zürich; Sternwartstrasse 14 8091 Zürich Switzerland
- Laboratory of Applied Mechanobiology; ETH Zürich; Vladimir-Prelog-Weg 1-5/10 8093 Zürich Switzerland
| | - Joanna Houska
- Division of Plastic Surgery and Hand Surgery; University Hospital Zürich; Sternwartstrasse 14 8091 Zürich Switzerland
| | - Manfred Welti
- Division of Plastic Surgery and Hand Surgery; University Hospital Zürich; Sternwartstrasse 14 8091 Zürich Switzerland
| | - Eliana Bonavoglia
- ab medica; Via J. F. Kennedy 10/12 20023 Cerro Maggiore (Milan) Italy
| | - Maurizio Calcagni
- Division of Plastic Surgery and Hand Surgery; University Hospital Zürich; Sternwartstrasse 14 8091 Zürich Switzerland
| | - Pietro Giovanoli
- Division of Plastic Surgery and Hand Surgery; University Hospital Zürich; Sternwartstrasse 14 8091 Zürich Switzerland
| | - Viola Vogel
- Laboratory of Applied Mechanobiology; ETH Zürich; Vladimir-Prelog-Weg 1-5/10 8093 Zürich Switzerland
| | - Johanna Buschmann
- Division of Plastic Surgery and Hand Surgery; University Hospital Zürich; Sternwartstrasse 14 8091 Zürich Switzerland
| |
Collapse
|
32
|
Horst M, Milleret V, Noetzli S, Gobet R, Sulser T, Eberli D. Polyesterurethane and acellular matrix based hybrid biomaterial for bladder engineering. J Biomed Mater Res B Appl Biomater 2015; 105:658-667. [DOI: 10.1002/jbm.b.33591] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Revised: 11/12/2015] [Accepted: 11/18/2015] [Indexed: 01/02/2023]
Affiliation(s)
- Maya Horst
- Laboratory for Tissue Engineering and Stem Cell Therapy, Department of Urology; University Hospital Zurich; Zurich Switzerland
- Division of Pediatric Urology; University Children's Hospital; Zurich Switzerland
| | - Vincent Milleret
- Laboratory for Cell and Tissue Engineering, Department of Obstetrics; University Hospital Zurich; Zurich Switzerland
| | - Sarah Noetzli
- Laboratory for Tissue Engineering and Stem Cell Therapy, Department of Urology; University Hospital Zurich; Zurich Switzerland
| | - Rita Gobet
- Division of Pediatric Urology; University Children's Hospital; Zurich Switzerland
| | - Tullio Sulser
- Laboratory for Tissue Engineering and Stem Cell Therapy, Department of Urology; University Hospital Zurich; Zurich Switzerland
| | - Daniel Eberli
- Laboratory for Tissue Engineering and Stem Cell Therapy, Department of Urology; University Hospital Zurich; Zurich Switzerland
| |
Collapse
|
33
|
Nasonova MV, Glushkova TV, Borisov VV, Velikanova EA, Burago AY, Kudryavtseva YA. Biocompatibility and Structural Features of Biodegradable Polymer Scaffolds. Bull Exp Biol Med 2015; 160:134-40. [PMID: 26608377 DOI: 10.1007/s10517-015-3114-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2014] [Indexed: 11/28/2022]
Abstract
We performed a comparative analysis of physicochemical properties and biocompatibility of scaffolds of different composition on the basis of biodegradable polymers fabricated by casting and electrospinning methods. For production of polyhydroxyalkanoate-based scaffolds by electrospinning method, the optimal concentration of the polymer was 8-10%. Fiber diameter and properties of the scaffold produced by electrospinning method depended on polymer composition. Addition of polycaprolactone increased elasticity of the scaffolds. Bio- and hemocompatibility of the scaffolds largely depended on the composition formulation and method of scaffold fabrication. Polylactide introduced into the composition of polyhydroxybutyrate-oxyvalerate scaffolds accelerated degradation and increased adhesive properties of the scaffolds.
Collapse
Affiliation(s)
- M V Nasonova
- Research Institute for Complex Issues of Cardiovascular Diseases, Siberian Division of the Russian Academy of Medical Sciences, Kemerovo, Russia.
| | - T V Glushkova
- Research Institute for Complex Issues of Cardiovascular Diseases, Siberian Division of the Russian Academy of Medical Sciences, Kemerovo, Russia
| | - V V Borisov
- Research Institute for Complex Issues of Cardiovascular Diseases, Siberian Division of the Russian Academy of Medical Sciences, Kemerovo, Russia
| | - E A Velikanova
- Research Institute for Complex Issues of Cardiovascular Diseases, Siberian Division of the Russian Academy of Medical Sciences, Kemerovo, Russia
| | - A Yu Burago
- Research Institute for Complex Issues of Cardiovascular Diseases, Siberian Division of the Russian Academy of Medical Sciences, Kemerovo, Russia
| | - Yu A Kudryavtseva
- Research Institute for Complex Issues of Cardiovascular Diseases, Siberian Division of the Russian Academy of Medical Sciences, Kemerovo, Russia
| |
Collapse
|
34
|
Narayanan G, Gupta BS, Tonelli AE. Estimation of the poly (ε-caprolactone) [PCL] and α-cyclodextrin [α-CD] stoichiometric ratios in their inclusion complexes [ICs], and evaluation of porosity and fiber alignment in PCL nanofibers containing these ICs. Data Brief 2015; 5:1048-55. [PMID: 26793749 PMCID: PMC4688974 DOI: 10.1016/j.dib.2015.11.009] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Revised: 10/13/2015] [Accepted: 11/05/2015] [Indexed: 11/25/2022] Open
Abstract
This paper describes the utilization of Proton-Nuclear Magnetic Resonance spectroscopy (1H NMR) to quantify the stoichiometric ratios between poly (ε-caprolactone) [PCL] and α-cyclodextrin (α-CD) present in their non-stoichiometric inclusion complexes [(n-s)-ICs]. This paper further describes the porosity and fiber alignment of PCL nanofibers nucleated by the [(n-s)-ICs] during electrospinning. 1H NMR indicated that the two non-stoichiometric inclusion complexes utilized in this study had differing stoichiometric ratios that were closely similar to those of the starting ratios used to make them. Studies on porosity and fiber alignments were conducted on the scanning electron microscope images using ImageJ. The data indicates that both fiber alignment as well as porosity values remain almost the same over all the samples. Thus we can conclude the improvement in mechanical properties was due only to the loading of the ICs, and their subsequent interaction with bulk unthreaded PCL.
Collapse
Affiliation(s)
- Ganesh Narayanan
- Fiber and Polymer Science Program, North Carolina State University, Raleigh, NC 27606, United States
| | - Bhupender S Gupta
- Fiber and Polymer Science Program, North Carolina State University, Raleigh, NC 27606, United States
| | - Alan E Tonelli
- Fiber and Polymer Science Program, North Carolina State University, Raleigh, NC 27606, United States
| |
Collapse
|
35
|
Walser J, Ferguson SJ. Oriented nanofibrous membranes for tissue engineering applications: Electrospinning with secondary field control. J Mech Behav Biomed Mater 2015; 58:188-198. [PMID: 26227737 DOI: 10.1016/j.jmbbm.2015.06.027] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2015] [Revised: 06/19/2015] [Accepted: 06/24/2015] [Indexed: 10/23/2022]
Abstract
Electrospinning is an electrical field driven method to produce polymer fibre membranes by deposition of a charged polymer jet onto a grounded collector. Fibre alignment within these mats is usually achieved by a fast collector movement, which is not feasible for all collector geometries, such as small diameter tubes or free-form moulds. The aim of this study was to evaluate the use of charged deflector plates to apply a dynamic, alternating electrical field perpendicular to the spinning direction, in order to directly control the fibre trajectory. Different field signal types, deflector plate voltages and deflection frequency ranges have been investigated. 210 poly(ɛ)caprolactone (PCL) membranes were electrospun. SEM images of each membrane were analysed using ImageJ. Main fibre diameter and orientation, as well as the degree of fibre alignment, were calculated, while a subset of the spun scaffolds were tested for their tensile properties. Higher deflector plate voltage amplitude resulted in a better fibre alignment. The best alignment was observed in a low deflection frequency range from 2 to 10 Hz. Mean main fibre direction was 87±18°, relative to the deflection axis, while fibre alignment had only a minor effect on the average fibre diameter. Young's modulus and yield stress increased with the ratio of the parallel fibre component. The feasibility of the described method to achieve fibre alignment was demonstrated. However, the main fibre direction is not aligned with the deflection axis, but consistently perpendicular to it, which is also reflected in the tensile properties of spun samples.
Collapse
Affiliation(s)
- Jochen Walser
- ETH Zurich, Institute for Biomechanics, Zurich, Switzerland; Collaborative Research Partner of AO Foundation, Davos, Switzerland.
| | - Stephen J Ferguson
- ETH Zurich, Institute for Biomechanics, Zurich, Switzerland; Collaborative Research Partner of AO Foundation, Davos, Switzerland.
| |
Collapse
|
36
|
Vakilian S, Mashayekhan S, Shabani I, Khorashadizadeh M, Fallah A, Soleimani M. Structural stability and sustained release of protein from a multilayer nanofiber/nanoparticle composite. Int J Biol Macromol 2015; 75:248-57. [DOI: 10.1016/j.ijbiomac.2015.01.051] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2014] [Revised: 01/14/2015] [Accepted: 01/16/2015] [Indexed: 02/08/2023]
|
37
|
Miller KS, Khosravi R, Breuer CK, Humphrey JD. A hypothesis-driven parametric study of effects of polymeric scaffold properties on tissue engineered neovessel formation. Acta Biomater 2015; 11:283-94. [PMID: 25288519 PMCID: PMC4256111 DOI: 10.1016/j.actbio.2014.09.046] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2014] [Revised: 09/24/2014] [Accepted: 09/25/2014] [Indexed: 01/22/2023]
Abstract
Continued advances in the tissue engineering of vascular grafts have enabled a paradigm shift from the desire to design for adequate suture retention, burst pressure and thrombo-resistance to the goal of achieving grafts having near native properties, including growth potential. Achieving this far more ambitious outcome will require the identification of optimal, not just adequate, scaffold structure and material properties. Given the myriad possible combinations of scaffold parameters, there is a need for a new strategy for reducing the experimental search space. Toward this end, we present a new modeling framework for in vivo neovessel development that allows one to begin to assess in silico the potential consequences of different combinations of scaffold structure and material properties. To restrict the number of parameters considered, we also utilize a non-dimensionalization to identify key properties of interest. Using illustrative constitutive relations for both the evolving fibrous scaffold and the neotissue that develops in response to inflammatory and mechanobiological cues, we show that this combined non-dimensionalization computational approach predicts salient aspects of neotissue development that depend directly on two key scaffold parameters, porosity and fiber diameter. We suggest, therefore, that hypothesis-driven computational models should continue to be pursued given their potential to identify preferred combinations of scaffold parameters that have the promise of improving neovessel outcome. In this way, we can begin to move beyond a purely empirical trial-and-error search for optimal combinations of parameters and instead focus our experimental resources on those combinations that are predicted to have the most promise.
Collapse
Affiliation(s)
- Kristin S Miller
- Department of Biomedical Engineering, Yale University, New Haven, CT, USA
| | - Ramak Khosravi
- Department of Biomedical Engineering, Yale University, New Haven, CT, USA
| | - Christopher K Breuer
- Surgical Research and Regenerative Medicine, Nationwide Children's Hospital, Columbus, OH, USA
| | - Jay D Humphrey
- Department of Biomedical Engineering, Yale University, New Haven, CT, USA; Vascular Biology and Therapeutics Program, Yale School of Medicine, New Haven, CT, USA.
| |
Collapse
|
38
|
Tetteh G, Khan A, Delaine-Smith R, Reilly G, Rehman I. Electrospun polyurethane/hydroxyapatite bioactive Scaffolds for bone tissue engineering: The role of solvent and hydroxyapatite particles. J Mech Behav Biomed Mater 2014; 39:95-110. [DOI: 10.1016/j.jmbbm.2014.06.019] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2014] [Revised: 06/25/2014] [Accepted: 06/30/2014] [Indexed: 10/25/2022]
|
39
|
Sakina R, Ali M. An Appraisal of the Efficacy and Effectiveness of Nanoscaffolds Developed by Different Techniques for Bone Tissue Engineering Applications: Electrospinning A Paradigm Shift. ADVANCES IN POLYMER TECHNOLOGY 2014. [DOI: 10.1002/adv.21429] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Rabeil Sakina
- Department of Biomedical Engineering & Sciences; School of Mechanical and Manufacturing Engineering, National University of Sciences and Technology; Islamabad 44000 Pakistan
| | - Murtaza Ali
- Department of Biomedical Engineering & Sciences; School of Mechanical and Manufacturing Engineering, National University of Sciences and Technology; Islamabad 44000 Pakistan
| |
Collapse
|
40
|
Maeda T, Hagiwara K, Yoshida S, Hasebe T, Hotta A. Preparation and characterization of 2-methacryloyloxyethyl phosphorylcholine polymer nanofibers prepared via electrospinning for biomedical materials. J Appl Polym Sci 2014. [DOI: 10.1002/app.40606] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Tomoki Maeda
- Department of Mechanical Engineering; Keio University; Yokohama 223-8522 Japan
| | - Katsuya Hagiwara
- Department of Mechanical Engineering; Keio University; Yokohama 223-8522 Japan
| | - Soki Yoshida
- Department of Mechanical Engineering; Keio University; Yokohama 223-8522 Japan
| | - Terumitsu Hasebe
- Department of Mechanical Engineering; Keio University; Yokohama 223-8522 Japan
- Tokai University Hachioji Hospital; Tokai University School of Medicine; Tokyo 190-0032 Japan
| | - Atsushi Hotta
- Department of Mechanical Engineering; Keio University; Yokohama 223-8522 Japan
| |
Collapse
|
41
|
Delaine-Smith RM, Green NH, Matcher SJ, MacNeil S, Reilly GC. Monitoring fibrous scaffold guidance of three-dimensional collagen organisation using minimally-invasive second harmonic generation. PLoS One 2014; 9:e89761. [PMID: 24587017 PMCID: PMC3938545 DOI: 10.1371/journal.pone.0089761] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2013] [Accepted: 01/24/2014] [Indexed: 11/19/2022] Open
Abstract
The biological and mechanical function of connective tissues is largely determined by controlled cellular alignment and therefore it seems appropriate that tissue-engineered constructs should be architecturally similar to the in vivo tissue targeted for repair or replacement. Collagen organisation dictates the tensile properties of most tissues and so monitoring the deposition of cell-secreted collagen as the construct develops is essential for understanding tissue formation. In this study, electrospun fibres with a random or high degree of orientation, mimicking two types of tissue architecture found in the body, were used to culture human fibroblasts for controlling cell alignment. The minimally-invasive technique of second harmonic generation was used with the aim of monitoring and profiling the deposition and organisation of collagen at different construct depths over time while construct mechanical properties were also determined over the culture period. It was seen that scaffold fibre organisation affected cell migration and orientation up to 21 days which in turn had an effect on collagen organisation. Collagen in random fibrous constructs was deposited in alternating configurations at different depths however a high degree of organisation was observed throughout aligned fibrous constructs orientated in the scaffold fibre direction. Three-dimensional second harmonic generation images showed that deposited collagen was more uniformly distributed in random constructs but aligned constructs were more organised and had higher intensities. The tensile properties of all constructs increased with increasing collagen deposition and were ultimately dictated by collagen organisation. This study highlights the importance of scaffold architecture for controlling the development of well-organised tissue engineered constructs and the usefulness of second harmonic generation imaging for monitoring collagen maturation in a minimally invasive manner.
Collapse
Affiliation(s)
- Robin M. Delaine-Smith
- Kroto Research Institute, Department of Materials Science and Engineering, University of Sheffield, Sheffield, United Kingdom
| | - Nicola H. Green
- Kroto Research Institute, Department of Materials Science and Engineering, University of Sheffield, Sheffield, United Kingdom
| | - Stephen J. Matcher
- Kroto Research Institute, Department of Materials Science and Engineering, University of Sheffield, Sheffield, United Kingdom
| | - Sheila MacNeil
- Kroto Research Institute, Department of Materials Science and Engineering, University of Sheffield, Sheffield, United Kingdom
| | - Gwendolen C. Reilly
- Kroto Research Institute, Department of Materials Science and Engineering, University of Sheffield, Sheffield, United Kingdom
- INSIGNEO Institute for in silico Medicine, Department of Materials Science and Engineering, University of Sheffield, Sheffield, United Kingdom
| |
Collapse
|
42
|
Artificial neural network for modeling the elastic modulus of electrospun polycaprolactone/gelatin scaffolds. Acta Biomater 2014; 10:709-21. [PMID: 24075888 DOI: 10.1016/j.actbio.2013.09.015] [Citation(s) in RCA: 90] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2013] [Revised: 08/29/2013] [Accepted: 09/08/2013] [Indexed: 01/16/2023]
Abstract
Scaffolds for tissue engineering (TE) require the consideration of multiple aspects, including polymeric composition and the structure and mechanical properties of the scaffolds, in order to mimic the native extracellular matrix of the tissue. Electrospun fibers are frequently utilized in TE due to their tunable physical, chemical, and mechanical properties and porosity. The mechanical properties of electrospun scaffolds made from specific polymers are highly dependent on the processing parameters, which can therefore be tuned for particular applications. Fiber diameter and orientation along with polymeric composition are the major factors that determine the elastic modulus of electrospun nano- and microfibers. Here we have developed a neural network model to investigate the simultaneous effects of composition, fiber diameter and fiber orientation of electrospun polycaprolactone/gelatin mats on the elastic modulus of the scaffolds under ambient and simulated physiological conditions. The model generated might assist bioengineers to fabricate electrospun scaffolds with defined fiber diameters, orientations and constituents, thereby replicating the mechanical properties of the native target tissue.
Collapse
|
43
|
Allo BA, Lin S, Mequanint K, Rizkalla AS. Role of bioactive 3D hybrid fibrous scaffolds on mechanical behavior and spatiotemporal osteoblast gene expression. ACS APPLIED MATERIALS & INTERFACES 2013; 5:7574-7583. [PMID: 23826710 DOI: 10.1021/am401861w] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Three-dimensional (3D) bioactive organic-inorganic (O/I) hybrid fibrous scaffolds are attractive extracellular matrix (ECM) surrogates for bone tissue engineering. With the aim of regulating osteoblast gene expression in 3D, a new class of hybrid fibrous scaffolds with two distinct fiber diameters (260 and 600 nm) and excellent physico-mechanical properties were fabricated from tertiary (SiO2-CaO-P2O5) bioactive glass (BG) and poly (ε-caprolactone) (PCL) by in situ sol-gel and electrospinning process. The PCL/BG hybrid fibrous scaffolds exhibited accelerated wetting properties, enhanced pore sizes and porosity, and superior mechanical properties that were dependent on fiber diameter. Contrary to control PCL fibrous scaffolds that were devoid of bonelike apatite particles, incubating PCL/BG hybrid fibrous scaffolds in simulated body fluid (SBF) revealed bonelike apatite deposition. Osteoblast cells cultured on PCL/BG hybrid fibrous scaffolds spread with multiple attachments and actively proliferated suggesting that the low temperature in situ sol-gel and electrospinning process did not have a detrimental effect. Targeted bone-associated gene expressions by rat calvarial osteoblasts seeded on these hybrid scaffolds demonstrated remarkable spatiotemporal gene activation. Transcriptional-level gene expressions for alkaline phosphatase (ALP), osteopontin (OPN), bone sialoprotein (BSP), and osteocalcin (OCN) were significantly higher on the hybrid fibrous scaffolds (p < 0.001) that were largely dependent on fiber diameter compared. Taken together, our results suggest that PCL/BG fibrous scaffolds may accelerate bone formation by providing a favorable microenvironment.
Collapse
Affiliation(s)
- Bedilu A Allo
- Department of Chemical and Biochemical Engineering, The University of Western Ontario, London, Ontario, Canada
| | | | | | | |
Collapse
|
44
|
Tujunen NM, Fujikura K, Obata A, Kasuga T. Aligned electrospun siloxane-doped vaterite/poly(L-lactide) composite fibremats: evaluation of their tensile strength and cell compatibility. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2013; 24:2096-109. [PMID: 23914946 DOI: 10.1080/09205063.2013.825752] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Siloxane-doped vaterite (SiV)/poly(L-lactide) hybrid-composite (SiPVH) has been developed in our group as the bone repair material and successfully fabricated into a non-woven electrospun fibremat. The aim of this work is to prepare aligned electrospun SiPVH fibremats with varied SiV content and compare their tensile properties and cell compatibilities using mouse osteoblast-like cells. It was observed that the maximum stress exhibited some non-linear trend as a function of SiV content: the highest stress value was reached with 30 wt.% SiV and decreased significantly with more than 40 wt.% SiV. Cellular morphology and proliferation were taken under examination on both aligned and random electrospun SiPVH fibremats. The cells started to orient themselves only 3 h after seeding on the aligned fibremat and they continued to elongate along the fibres. The number of the cells cultured up to seven days on both random and aligned fibremats was well comparable; therefore the alignment did not show negative effect on the cellular proliferation.
Collapse
Affiliation(s)
- Noora-Maria Tujunen
- a Graduate School of Engineering, Nagoya Institute of Technology , Gokiso-cho, Showa-ku, Nagoya , 4668555 , Japan
| | | | | | | |
Collapse
|
45
|
Horst M, Milleret V, Nötzli S, Madduri S, Sulser T, Gobet R, Eberli D. Increased porosity of electrospun hybrid scaffolds improved bladder tissue regeneration. J Biomed Mater Res A 2013; 102:2116-24. [PMID: 23893914 DOI: 10.1002/jbm.a.34889] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2013] [Revised: 06/29/2013] [Accepted: 07/18/2013] [Indexed: 12/12/2022]
Abstract
The object of this study was to investigate the role of scaffold porosity on tissue ingrowth using hybrid scaffolds consisting of bladder acellular matrix and electrospun poly (lactide-co-glycolide) (PLGA) microfibers that mimic the morphological characteristics of the bladder wall in vitro and in vivo. We compared single-spun (SS) PLGA scaffolds with more porous cospun (CS) scaffolds (PLGA and polyethylene glycol). Scaffolds were characterized by scanning electron microscopy. Bladder smooth muscle cells (SMCs) were seeded, and proliferation and histological assays were performed. Sixteen rats were subjected to augmentation cystoplasty with seeded SS or CS scaffolds, morphological, and histological studies were performed 2 and 4 weeks after implantation. The porosities of SS and CS scaffolds were 73.1 ± 2.9% and 80.9 ± 1.5%, respectively. The in vitro evaluation revealed significantly deeper cell migration into CS scaffolds. The in vivo evaluation showed significant shrinkage of SS scaffolds (p = 0.019). The histological analysis revealed a bladder wall-like structure with urothelial lining and SMC infiltration in both groups. The microvessel density was significantly increased in the CS scaffolds (p < 0.001). Increasing the porosity of electrospun hybrid scaffolds is an effective strategy to enhance cell proliferation and distribution in vitro and tissue ingrowth in vivo.
Collapse
Affiliation(s)
- Maya Horst
- Division of Pediatric Urology, University Children's Hospital, 8032, Zurich, Switzerland
| | | | | | | | | | | | | |
Collapse
|
46
|
Bae HS, Haider A, Selim KMK, Kang DY, Kim EJ, Kang IK. Fabrication of highly porous PMMA electrospun fibers and their application in the removal of phenol and iodine. JOURNAL OF POLYMER RESEARCH 2013. [DOI: 10.1007/s10965-013-0158-9] [Citation(s) in RCA: 83] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
47
|
Binder C, Milleret V, Hall H, Eberli D, Lühmann T. Influence of micro and submicro poly(lactic-glycolic acid) fibers on sensory neural cell locomotion and neurite growth. J Biomed Mater Res B Appl Biomater 2013; 101:1200-8. [PMID: 23650277 DOI: 10.1002/jbm.b.32931] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2012] [Revised: 02/11/2013] [Accepted: 02/17/2013] [Indexed: 01/28/2023]
Abstract
For successful peripheral nerve regeneration, a complex interplay of growth factors, topographical guidance structure by cells and extracellular matrix proteins, are needed. Aligned fibrous biomaterials with a wide variety in fiber diameter have been used successfully to support neuronal guidance. To better understand the importance of size of the topographical features, we investigated the directionality of neuronal migration of sensory ND7/23 cells on aligned electrospun poly(lactic-glycolic acid) PLGA fibers in the range of micrometer and submicrometer diameters by time-lapse microscopy. Cell trajectories of single ND7/23 cells were found to significantly follow topographies of PLGA fibers with micrometer dimensions in contrast to PLGA fibers within the submicrometer range, where cell body movement was observed to be independent of fibrous structures. Moreover, neurite alignment of ND7/23 cells on various topographies was assessed. PLGA fibers with micrometer dimensions significantly aligned 83.3% of all neurites after 1 day of differentiation compared to similar submicrometer structures, which orientated 25.8% of all neurites. Interestingly, after 7 days of differentiation ND7/23 cells on submicrometer PLGA fibers increased their alignment of neurites to 52.5%. Together, aligned PLGA fibers with micrometer dimensions showed a superior influence on directionality of neuronal migration and neurite outgrowth of sensory ND7/23 cells, indicating that electrospun micro-PLGA fibers might represent a potential material to induce directionality of neuronal growth in engineering applications for sensory nerve regeneration.
Collapse
Affiliation(s)
- Carmen Binder
- Cells and BioMaterials, Department of Materials, ETH Zurich, Switzerland
| | | | | | | | | |
Collapse
|
48
|
Aduba DC, Hammer JA, Yuan Q, Andrew Yeudall W, Bowlin GL, Yang H. Semi-interpenetrating network (sIPN) gelatin nanofiber scaffolds for oral mucosal drug delivery. Acta Biomater 2013; 9:6576-84. [PMID: 23416578 DOI: 10.1016/j.actbio.2013.02.006] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2012] [Revised: 02/03/2013] [Accepted: 02/05/2013] [Indexed: 10/27/2022]
Abstract
The oral mucosa is a promising absorption site for drug administration because it is permeable, highly vascularized and allows for ease of administration. Nanofiber scaffolds for local or systemic drug delivery through the oral mucosa, however, have not been fully explored. In this work, we fabricated electrospun gelatin nanofiber scaffolds for oral mucosal drug delivery. To improve structural stability of the electrospun gelatin scaffolds and allow non-invasive incorporation of therapeutics into the scaffold, we employed photo-reactive polyethylene glycol diacrylate (PEG-DA575, 575 gmol(-1)) as a cross-linker to stabilize the scaffold by forming semi-interpenetrating network gelatin nanofiber scaffolds (sIPN NSs), during which cross-linker concentration was varied (1×, 2×, 4× and 8×). The results showed that electrospun gelatin nanofiber scaffolds after being cross-linked with PEG-DA575 (i.e. sIPN NS1×, 2×, 4× and 8×) retained fiber morphology and possessed improved structural stability. A series of structural parameters and properties of the cross-linked electrospun gelatin scaffolds were systematically characterized in terms of morphology, fiber diameter, mechanical properties, porosity, swelling and degradation. Mucin absorption onto sIPN NS4× was also confirmed, indicating this scaffold possessed greatest mucoadhesion properties among those tested. Slow release of nystatin, an anti-fungal reagent, from the sIPN gelatin nanofiber scaffold was demonstrated.
Collapse
|
49
|
Joshi VS, Lei NY, Walthers CM, Wu B, Dunn JCY. Macroporosity enhances vascularization of electrospun scaffolds. J Surg Res 2013; 183:18-26. [PMID: 23769018 DOI: 10.1016/j.jss.2013.01.005] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2012] [Revised: 12/21/2012] [Accepted: 01/03/2013] [Indexed: 10/27/2022]
Abstract
BACKGROUND One of the greatest challenges in scaffold-based tissue engineering remains poor and inefficient penetration of cells into scaffolds to generate thick vascularized and cellular tissues. Electrospinning has emerged as a preferred method for producing scaffolds with high surface area-to-volume ratios and resemblance to extracellular matrix. However, cellular infiltration and vascular ingrowth are insufficient because of lack of macropore interconnectivity in electrospun scaffolds with high-fiber density. In this study, we report a novel two-step electrospinning and laser cutting fabrication method to enhance the macroporosity of electrospun scaffolds. MATERIALS AND METHODS Polycaprolactone dissolved in hexafluoroisopropanol was electrospun at 25 kV to create uniform 100-120 μm sheets of polycaprolactone fiber mats (1- to 5-μm fiber diameter) with an array of pores created using VERSA LASER CUTTER 2.3. Three groups of fiber mats with three distinct pore diameters (300, 160, and 80 μm, all with 15% pore area) were fabricated and compared with a control group without laser cut pores. After laser cutting, all mats were collagen coated and manually wrapped around a catheter six times to form six concentric layers before implantation into the omentum of Lewis rats. Cellular infiltration and vascular ingrowth were examined after 2 wk. RESULTS Histologic analysis of 14-d samples showed that scaffolds with laser cut pores had close to 40% more cellular infiltration and increased vascular ingrowth in the innermost layers of the construct compared with the control group. Despite keeping pore area percentage constant between the three groups, the sheets with the largest pore size performed better than those with the smallest pore sizes. CONCLUSIONS Porosity is the primary factor limiting the extensive use of electrospun scaffolds in tissue engineering. Our method of LASER cutting pores in electrospun fibrous scaffolds ensures uniform pore sizes, easily controllable and customizable pores, and enhances cellular infiltration and vascular ingrowth, demonstrating significant advancement toward utility of electrospun scaffolds in tissue engineering.
Collapse
Affiliation(s)
- Vaidehi S Joshi
- Department of Surgery, University of California, Los Angeles, California 90095, USA
| | | | | | | | | |
Collapse
|
50
|
Rampichová M, Buzgo M, Chvojka J, Prosecká E, Kofroňová O, Amler E. Cell penetration to nanofibrous scaffolds: Forcespinning®, an alternative approach for fabricating 3D nanofibers. Cell Adh Migr 2013; 8:36-41. [PMID: 24429388 DOI: 10.4161/cam.27477] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Cell infiltration is a critical parameter for the successful development of 3D matrices for tissue engineering. Application of electrospun nanofibers in tissue engineering has recently attracted much attention. Notwithstanding several of their advantages, small pore size and small thickness of the electrospun layer limit their application for development of 3D scaffolds. Several methods for the pore size and/or electrospun layer thickness increase have been recently developed. Nevertheless, tissue engineering still needs emerging of either novel nanofiber-enriched composites or new techniques for 3D nanofiber fabrication. Forcespinning(®) seems to be a promising alternative. The potential of the Forcespinning(®) method is illustrated in preliminary experiment with mesenchymal stem cells.
Collapse
Affiliation(s)
- Michala Rampichová
- Laboratory of Tissue Engineering; Institute of Experimental Medicine; Academy of Science of the Czech Republic; Prague, Czech Republic; University Center for Energy Efficient Buildings (UCEEB); The Czech Technical University in Prague; Kladno, Czech Republic
| | - Matej Buzgo
- Laboratory of Tissue Engineering; Institute of Experimental Medicine; Academy of Science of the Czech Republic; Prague, Czech Republic; University Center for Energy Efficient Buildings (UCEEB); The Czech Technical University in Prague; Kladno, Czech Republic
| | - Jiří Chvojka
- Technical University of Liberec; Faculty of Textile Engineering; Department of Nonwoven Textiles; Liberec, Czech Republic; Technical University of Liberec; Institute for Nanomaterials; Advanced technologies and Innovation; Liberec, Czech Republic
| | - Eva Prosecká
- Laboratory of Tissue Engineering; Institute of Experimental Medicine; Academy of Science of the Czech Republic; Prague, Czech Republic
| | - Olga Kofroňová
- Laboratory of Molecular Structure Characterization; Institute of Microbiology; Academy of Sciences of the Czech Republic; Prague, Czech Republic
| | - Evžen Amler
- Laboratory of Tissue Engineering; Institute of Experimental Medicine; Academy of Science of the Czech Republic; Prague, Czech Republic; University Center for Energy Efficient Buildings (UCEEB); The Czech Technical University in Prague; Kladno, Czech Republic; Institute of Biophysics; 2nd Faculty of Medicine; Charles University in Prague; Prague, Czech Republic; Czech Technical University in Prague; Faculty of Biomedical Engineering; Kladno, Czech Republic
| |
Collapse
|