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Park SM, Choi KC, Lee BH, Yoo SY, Kim CY. Serial Vascular Responses of Balloon-Expandable Stent With Biodegradable Film-Type Graft in a Rabbit Iliac Artery Dissection Model (BioGard Study). Korean Circ J 2024; 54:499-512. [PMID: 39109598 PMCID: PMC11306422 DOI: 10.4070/kcj.2024.0049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Revised: 04/16/2024] [Accepted: 05/07/2024] [Indexed: 08/10/2024] Open
Abstract
BACKGROUND AND OBJECTIVES Arterial dissection during endovascular therapy rarely occurs but can be lethal. A fabric-based covered graft stents yield poor clinical outcomes. A novel balloon-expandable stent with biodegradable film graft for overcoming these issues was evaluated in a rabbit iliac artery model. METHOD Eighteen rabbits with iliac artery dissections were induced by balloon over-inflation on angiography (Ellis type 2 or 3) and treated using the test device (3.0×24 mm). Subsequently, survived twelve animals underwent histologic examinations and micro-computed tomography (CT) at 0, 2, 4, and 8 weeks and 3, 6, 9, and 12 months and angiography at one-year. RESULTS There were no adverse cardiovascular events during the one-year. Early-stage histologic examination revealed complete sealing of disrupted vessels by the device, exhibiting mural hematoma, peri-stent red thrombi, and dense infiltration of inflammatory cells. Mid- and long-term histologic examination showed patent stents with neointimal hyperplasia over the stents (% area stenosis: 11.8 at 2 weeks, 26.1 at 1 month, 29.7 at 3 months, 49.2 at 9 months, and 51.0 at 1 year), along with mild peri-strut inflammatory response (Grade: 1-2 at mid-term and 0-1 at long-term). The graft film became scarcely visible after six months. Both CT and angiography revealed no instances of thrombotic occlusion or in-stent restenosis (% diameter stenosis: 5.7 at 2 weeks, 12.3 at 1 month, 14.2 at 3 months, 25.1 at 9 months, and 26.6 at 1 year). CONCLUSIONS The novel balloon-expandable stent with a biodegradable film graft demonstrates feasibility in managing severe artery dissection and preventing lethal vascular events in animal model.
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Affiliation(s)
- Sang Min Park
- Division of Cardiology, Nowon Eulji Medical Center, Eulji University School of Medicine, Seoul, Korea.
| | - Kyung-Chan Choi
- Department of Pathology, Cardiovascular Center, Chuncheon Sacred Heart Hospital, Hallym University College of Medicine, Chuncheon, Korea
| | - Byeong Han Lee
- Laboratory Animal Center, Osong Medical Innovation Foundation, Osong, Korea
| | - Sang Yol Yoo
- Department of Radiology, H Plus Yangji Hospital, Seoul, Korea
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Taghe S, Mirzaeei S, Hosseinkhani T. Design and development of dual drug-loaded nanofibrous inserts for ophthalmic sustained delivery of AMK and VAN: Pharmacokinetic study in rabbit's eye. Int J Pharm 2024; 656:124056. [PMID: 38548072 DOI: 10.1016/j.ijpharm.2024.124056] [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: 12/16/2023] [Revised: 03/10/2024] [Accepted: 03/25/2024] [Indexed: 04/08/2024]
Abstract
Bacterial corneal keratitis is a damage to the corneal tissue that if not treated, can cause various complications like severe vision loss or even blindness. Combination therapy with two antibiotics which are effective against Gram-positive and Gram-negative bacteria offers sufficient broad-spectrum antibiotic coverage for the treatment of keratitis. Nanofibers can be a potential carrier in dual drug delivery due to their structural characteristics, specific surface area and high porosity. In order to achieve a sustained delivery of amikacin (AMK) and vancomycin (VAN), the current study designed, assessed, and compared nanofibrous inserts utilizing polyvinyl alcohol (PVA) and polycaprolactone (PCL) as biocompatible polymers. Electrospinning method was utilized to prepare two different formulations, PVA-VAN/AMK and PCL/PVA-VAN/AMK, with 351.8 ± 53.59 nm and 383.85 ± 49 nm diameters, respectively. The nanofibers were simply inserted in the cul-de-sac as a noninvasive approach for in vivo studies. The data obtained from the physicochemical and mechanical properties studies confirmed the suitability of the formulations. Antimicrobial investigations showed the antibacterial properties of synthesized nanofibers against Staphylococcus aureus and Pseudomonas aeruginosa. Both in vitro and animal studies demonstrated sustained drug release of the prepared nanofibers for 120 h. Based on the in vivo findings, the prepared nanofibers' AUC0-120 was found to be 20 to 31 times greater than the VAN and AMK solutions. Considering the results, the nanofibrous inserts can be utilized as an effective and safe system in drug delivery.
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Affiliation(s)
- Shiva Taghe
- Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran; Pharmaceutical Sciences Research Center, Rahesh Daru Novine, Kermanshah 6715847141, Iran; Nano Drug Delivery Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Shahla Mirzaeei
- Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran; Pharmaceutical Sciences Research Center, Rahesh Daru Novine, Kermanshah 6715847141, Iran; Nano Drug Delivery Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran.
| | - Tanin Hosseinkhani
- Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
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Thia ZZ, Ho YT, Shih KC, Tong L. New developments in the management of persistent corneal epithelial defects. Surv Ophthalmol 2023; 68:1093-1114. [PMID: 37301520 DOI: 10.1016/j.survophthal.2023.06.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 05/24/2023] [Accepted: 06/05/2023] [Indexed: 06/12/2023]
Abstract
A persistent epithelial defect (PED) is a corneal epithelial defect that failed to heal after 2weeks. It is a condition that carries much morbidity, and our understanding of PED remains poor, with current treatment methods often having unsatisfactory outcomes. With PEDs becoming more prevalent, more efforts are required to establish reliable treatment modalities. Our reviews describe the causes of PEDs and the different approaches developed to manage them, as well as their associated limitations. Emphasis is placed on understanding various advances in the development of new treatment modalities. We have also described a case of a woman with a background of graft-versus-host disease on long-term topical corticosteroids who developed complicated PED involving both eyes. The current approach to managing PEDs generally involves exclusion of an active infection, followed by treatment modalities that aim to encourage corneal epithelial healing. Success rates, however, remain far from desirable, as treatment remains challenging due to multiple underlying etiologies. In summary, advances in the development of new therapies may be able to facilitate progress in the understanding and treatment of PED.
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Affiliation(s)
- Zhang Zhe Thia
- Singapore Eye Research Institute, Singapore, Singapore; National University Hospital, Singapore, Singapore; Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Yik To Ho
- Hong Kong University, Pok Fu Lam, Hong Kong
| | | | - Louis Tong
- Singapore Eye Research Institute, Singapore, Singapore; Singapore National Eye Center, Singapore, Singapore; Duke-NUS Medical School, Singapore, Singapore; Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.
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4
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Orash Mahmoud Salehi A, Heidari-Keshel S, Poursamar SA, Zarrabi A, Sefat F, Mamidi N, Behrouz MJ, Rafienia M. Bioprinted Membranes for Corneal Tissue Engineering: A Review. Pharmaceutics 2022; 14:pharmaceutics14122797. [PMID: 36559289 PMCID: PMC9784133 DOI: 10.3390/pharmaceutics14122797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 12/11/2022] [Accepted: 12/12/2022] [Indexed: 12/15/2022] Open
Abstract
Corneal transplantation is considered a convenient strategy for various types of corneal disease needs. Even though it has been applied as a suitable solution for most corneal disorders, patients still face several issues due to a lack of healthy donor corneas, and rejection is another unknown risk of corneal transplant tissue. Corneal tissue engineering (CTE) has gained significant consideration as an efficient approach to developing tissue-engineered scaffolds for corneal healing and regeneration. Several approaches are tested to develop a substrate with equal transmittance and mechanical properties to improve the regeneration of cornea tissue. In this regard, bioprinted scaffolds have recently received sufficient attention in simulating corneal structure, owing to their spectacular spatial control which produces a three-cell-loaded-dimensional corneal structure. In this review, the anatomy and function of different layers of corneal tissue are highlighted, and then the potential of the 3D bioprinting technique for promoting corneal regeneration is also discussed.
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Affiliation(s)
- Amin Orash Mahmoud Salehi
- Department of Chemistry and Nanotechnology, School of Engineering and Science, Tecnologico de Monterrey, Monterrey 64849, NL, Mexico
| | - Saeed Heidari-Keshel
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran 1434875451, Iran
| | - Seyed Ali Poursamar
- Biosensor Research Center, Isfahan University of Medical Sciences, Isfahan 8174673441, Iran
| | - Ali Zarrabi
- Department of Biomedical Engineering, Faculty of Engineering and Natural Sciences, Istinye University, Istanbul 34396, Turkey
| | - Farshid Sefat
- Department of Biomedical and Electronics Engineering, School of Engineering, University of Bradford, Bradford BD7 1DP, UK
- Interdisciplinary Research Centre in Polymer Science & Technology (Polymer IRC), University of Bradford, Bradford BD7 1DP, UK
| | - Narsimha Mamidi
- Department of Chemistry and Nanotechnology, School of Engineering and Science, Tecnologico de Monterrey, Monterrey 64849, NL, Mexico
- Correspondence: or (N.M.); (M.R.)
| | - Mahmoud Jabbarvand Behrouz
- Translational Ophthalmology Research Center, Farabi Eye Hospital, Tehran University of Medical Sciences, Tehran 1985717443, Iran
| | - Mohammad Rafienia
- Biosensor Research Center, Isfahan University of Medical Sciences, Isfahan 8174673441, Iran
- Correspondence: or (N.M.); (M.R.)
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Su G, Li G, Wang W, Xu L. Application Prospect and Preliminary Exploration of GelMA in Corneal Stroma Regeneration. Polymers (Basel) 2022; 14:polym14194227. [PMID: 36236174 PMCID: PMC9571618 DOI: 10.3390/polym14194227] [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: 09/05/2022] [Revised: 10/01/2022] [Accepted: 10/04/2022] [Indexed: 11/05/2022] Open
Abstract
Corneal regeneration has become a prominent study area in recent decades. Because the corneal stroma contributes about 90% of the corneal thickness in the corneal structure, corneal stromal regeneration is critical for the treatment of cornea disease. Numerous materials, including deacetylated chitosan, hydrophilic gel, collagen, gelatin methacrylate (GelMA), serine protein, glycerol sebacate, and decellularized extracellular matrix, have been explored for keratocytes regeneration. GelMA is one of the most prominent materials, which is becoming more and more popular because of its outstanding three-dimensional scaffold structure, strong mechanics, good optical transmittance, and biocompatibility. This review discussed recent research on corneal stroma regeneration materials and related GelMA.
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Terzopoulou Z, Zamboulis A, Koumentakou I, Michailidou G, Noordam MJ, Bikiaris DN. Biocompatible Synthetic Polymers for Tissue Engineering Purposes. Biomacromolecules 2022; 23:1841-1863. [PMID: 35438479 DOI: 10.1021/acs.biomac.2c00047] [Citation(s) in RCA: 46] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Synthetic polymers have been an integral part of modern society since the early 1960s. Besides their most well-known applications to the public, such as packaging, construction, textiles and electronics, synthetic polymers have also revolutionized the field of medicine. Starting with the first plastic syringe developed in 1955 to the complex polymeric materials used in the regeneration of tissues, their contributions have never been more prominent. Decades of research on polymeric materials, stem cells, and three-dimensional printing contributed to the rapid progress of tissue engineering and regenerative medicine that envisages the potential future of organ transplantations. This perspective discusses the role of synthetic polymers in tissue engineering, their design and properties in relation to each type of application. Additionally, selected recent achievements of tissue engineering using synthetic polymers are outlined to provide insight into how they will contribute to the advancement of the field in the near future. In this way, we aim to provide a guide that will help scientists with synthetic polymer design and selection for different tissue engineering applications.
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Affiliation(s)
- Zoi Terzopoulou
- Laboratory of Chemistry and Technology of Polymers and Dyes, Department of Chemistry, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece
| | - Alexandra Zamboulis
- Laboratory of Chemistry and Technology of Polymers and Dyes, Department of Chemistry, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece
| | - Ioanna Koumentakou
- Laboratory of Chemistry and Technology of Polymers and Dyes, Department of Chemistry, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece
| | - Georgia Michailidou
- Laboratory of Chemistry and Technology of Polymers and Dyes, Department of Chemistry, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece
| | - Michiel Jan Noordam
- Laboratory of Chemistry and Technology of Polymers and Dyes, Department of Chemistry, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece
| | - Dimitrios N Bikiaris
- Laboratory of Chemistry and Technology of Polymers and Dyes, Department of Chemistry, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece
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Qin X, Wu Y, Liu S, Yang L, Yuan H, Cai S, Flesch J, Li Z, Tang Y, Li X, Zhuang Y, You C, Liu C, Yu C. Surface Modification of Polycaprolactone Scaffold With Improved Biocompatibility and Controlled Growth Factor Release for Enhanced Stem Cell Differentiation. Front Bioeng Biotechnol 2022; 9:802311. [PMID: 35071210 PMCID: PMC8782149 DOI: 10.3389/fbioe.2021.802311] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Accepted: 11/15/2021] [Indexed: 01/31/2023] Open
Abstract
Polycaprolactone (PCL) has been widely used as a scaffold material for tissue engineering. Reliable applications of the PCL scaffolds require overcoming their native hydrophobicity and obtaining the sustained release of signaling factors to modulate cell growth and differentiation. Here, we report a surface modification strategy for electrospun PCL nanofibers using an azide-terminated amphiphilic graft polymer. With multiple alkylation and pegylation on the side chains of poly-L-lysine, stable coating of the graft polymer on the PCL nanofibers was achieved in one step. Using the azide-alkyne “click chemistry”, we functionalized the azide-pegylated PCL nanofibers with dibenzocyclooctyne-modified nanocapsules containing growth factor, which rendered the nanofiber scaffold with satisfied cell adhesion and growth property. Moreover, by specific immobilization of pH-responsive nanocapsules containing bone morphogenetic protein 2 (BMP-2), controlled release of active BMP-2 from the PCL nanofibers was achieved within 21 days. When bone mesenchyme stem cells were cultured on this nanofiber scaffold, enhanced ossification was observed in correlation with the time-dependent release of BMP-2. The established surface modification can be extended as a generic approach to hydrophobic nanomaterials for longtime sustainable release of multiplex signaling proteins for tissue engineering.
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Affiliation(s)
- Xiaoyan Qin
- College of Life Sciences and Technology, Beijing University of Chemical Technology, Beijing, China
| | - Yixin Wu
- College of Life Sciences and Technology, Beijing University of Chemical Technology, Beijing, China
| | - Shuang Liu
- College of Life Sciences and Technology, Beijing University of Chemical Technology, Beijing, China
| | - Lei Yang
- Department of Spine Surgery, The First Affiliated Hospital, Shenzhen University, Shenzhen Second People's Hospital, Shenzhen, China
| | - Hongxia Yuan
- College of Life Sciences and Technology, Beijing University of Chemical Technology, Beijing, China
| | - Susu Cai
- College of Life Sciences and Technology, Beijing University of Chemical Technology, Beijing, China
| | - Julia Flesch
- Department of Biology/Chemistry, University of Osnabrück, Osnabrück, Germany.,Center of Cellular Nanoanalytics (CellNanOs), Osnabrück, Germany
| | - Zehao Li
- College of Life Sciences and Technology, Beijing University of Chemical Technology, Beijing, China
| | - Yujing Tang
- SINOPEC, Beijing Research Institute of Chemical Industry, Beijing, China
| | - Xiaomin Li
- SINOPEC, Beijing Research Institute of Chemical Industry, Beijing, China
| | - Yi Zhuang
- Science and Technology Department China Petrochemical Corporation, Beijing, China
| | - Changjiang You
- Department of Biology/Chemistry, University of Osnabrück, Osnabrück, Germany.,Center of Cellular Nanoanalytics (CellNanOs), Osnabrück, Germany
| | - Chaoyong Liu
- College of Life Sciences and Technology, Beijing University of Chemical Technology, Beijing, China
| | - Changyuan Yu
- College of Life Sciences and Technology, Beijing University of Chemical Technology, Beijing, China
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Himmler M, Schubert DW, Fuchsluger TA. Examining the Transmission of Visible Light through Electrospun Nanofibrous PCL Scaffolds for Corneal Tissue Engineering. NANOMATERIALS 2021; 11:nano11123191. [PMID: 34947541 PMCID: PMC8705195 DOI: 10.3390/nano11123191] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 11/21/2021] [Accepted: 11/23/2021] [Indexed: 12/28/2022]
Abstract
The transparency of nanofibrous scaffolds is of highest interest for potential applications like corneal wound dressings in corneal tissue engineering. In this study, we provide a detailed analysis of light transmission through electrospun polycaprolactone (PCL) scaffolds. PCL scaffolds were produced via electrospinning, with fiber diameters in the range from (35 ± 13) nm to (167 ± 35) nm. Light transmission measurements were conducted using UV-vis spectroscopy in the range of visible light and analyzed with respect to the influence of scaffold thickness, fiber diameter, and surrounding medium. Contour plots were compiled for a straightforward access to light transmission values for arbitrary scaffold thicknesses. Depending on the fiber diameter, transmission values between 15% and 75% were observed for scaffold thicknesses of 10 µm. With a decreasing fiber diameter, light transmission could be improved, as well as with matching refractive indices of fiber material and medium. For corneal tissue engineering, scaffolds should be designed as thin as possible and fabricated from polymers with a matching refractive index to that of the human cornea. Concerning fiber diameter, smaller fiber diameters should be favored for maximizing graft transparency. Finally, a novel, semi-empirical formulation of light transmission through nanofibrous scaffolds is presented.
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Affiliation(s)
- Marcus Himmler
- Department of Ophthalmology, University Medical Center Rostock, Doberaner Straße 140, 18057 Rostock, Germany
- Institute of Polymer Materials, Friedrich-Alexander University Erlangen-Nuremberg, Martenstraße 7, 91058 Erlangen, Germany;
- Correspondence: (M.H.); (T.A.F.)
| | - Dirk W. Schubert
- Institute of Polymer Materials, Friedrich-Alexander University Erlangen-Nuremberg, Martenstraße 7, 91058 Erlangen, Germany;
| | - Thomas A. Fuchsluger
- Department of Ophthalmology, University Medical Center Rostock, Doberaner Straße 140, 18057 Rostock, Germany
- Correspondence: (M.H.); (T.A.F.)
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10
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Preparation and In Vitro Characterization of Gelatin Methacrylate for Corneal Tissue Engineering. Tissue Eng Regen Med 2021; 19:59-72. [PMID: 34665455 DOI: 10.1007/s13770-021-00393-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2021] [Revised: 08/20/2021] [Accepted: 08/23/2021] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Corneal disease is second only to cataract considered as the leading cause of blindness in the world, with high morbidity. Construction of corneal substitutes in vitro by tissue engineering technology to achieve corneal regeneration has become a research hotspot in recent years. We conducted in-depth research on the biocompatibility, physicochemical and mechanical properties of rat bone marrow mesenchymal stem cells (rBM-MSCs)-seeded gelatin methacrylate (GelMA) as a bioengineered cornea. METHODS Four kinds of GelMA with different concentrations (7, 10, 15 and 30%) were prepared, and their physic-chemical, optical properties, and biocompatibility with rBM-MSCs were characterized. MTT, live/dead staining, cell morphology, immunofluorescence staining and gene expression of keratocyte markers were performed. RESULTS 7%GelMA hydrogel had higher equilibrium water content and porosity, better optical properties and hydrophilicity. In addition, it is more beneficial to the growth and proliferation of rBM-MSCs. However, the 30%GelMA hydrogel had the best mechanical properties, and could be more conducive to promote the differentiation of rBM-MSCs into keratocyte-like cells. CONCLUSION As a natural biological scaffold, GelMA hydrogel has good biocompatibility. And it has the ability to promote the differentiation of rBM-MSCs into keratocyte-like cells, which laid a theoretical and experimental foundation for further tissue-engineered corneal stromal transplantation, and provided a new idea for the source of seeded cells in corneal tissue engineering.
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Munawar MA, Schubert DW. Revealing Electrical and Mechanical Performances of Highly Oriented Electrospun Conductive Nanofibers of Biopolymers with Tunable Diameter. Int J Mol Sci 2021; 22:ijms221910295. [PMID: 34638631 PMCID: PMC8509057 DOI: 10.3390/ijms221910295] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Revised: 09/15/2021] [Accepted: 09/18/2021] [Indexed: 11/24/2022] Open
Abstract
The present study outlines a reliable approach to determining the electrical conductivity and elasticity of highly oriented electrospun conductive nanofibers of biopolymers. The highly oriented conductive fibers are fabricated by blending a high molar mass polyethylene oxide (PEO), polycaprolactone (PCL), and polylactic acid (PLA) with polyaniline (PANi) filler. The filler-matrix interaction and molar mass (M) of host polymer are among governing factors for variable fiber diameter. The conductivity as a function of filler fraction (φ) is shown and described using a McLachlan equation to reveal the electrical percolation thresholds (φc) of the nanofibers. The molar mass of biopolymer, storage time, and annealing temperature are significant factors for φc. The Young’s modulus (E) of conductive fibers is dependent on filler fraction, molar mass, and post-annealing process. The combination of high orientation, tunable diameter, tunable conductivity, tunable elasticity, and biodegradability makes the presented nanofibers superior to the fibers described in previous literature and highly desirable for various biomedical and technical applications.
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Affiliation(s)
- Muhammad A. Munawar
- Institute of Polymer Materials, Department of Material Science, Faculty of Engineering, Friedrich-Alexander-University Erlangen-Nuremberg, Martensstrasse 7, 91058 Erlangen, Germany
- KeyLab Advanced Fiber Technology, Bavarian Polymer Institute, Dr.-Mack-Strasse 77, 90762 Fürth, Germany
- Correspondence: (M.A.M.); (D.W.S.)
| | - Dirk W. Schubert
- Institute of Polymer Materials, Department of Material Science, Faculty of Engineering, Friedrich-Alexander-University Erlangen-Nuremberg, Martensstrasse 7, 91058 Erlangen, Germany
- KeyLab Advanced Fiber Technology, Bavarian Polymer Institute, Dr.-Mack-Strasse 77, 90762 Fürth, Germany
- Correspondence: (M.A.M.); (D.W.S.)
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Optimization of polycaprolactone - based nanofiber matrices for the cultivation of corneal endothelial cells. Sci Rep 2021; 11:18858. [PMID: 34552187 PMCID: PMC8458296 DOI: 10.1038/s41598-021-98426-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 09/02/2021] [Indexed: 01/24/2023] Open
Abstract
Posterior lamellar transplantation of the eye’ s cornea (DSAEK, DMEK) currently is the gold standard for treating patients with corneal endothelial cell and back surface pathologies resulting in functional impairment. An artificial biomimetic graft carrying human corneal endothelium could minimize the dependency on human donor corneas giving access to this vision-restoring surgery to large numbers of patients, thus reducing current long waiting lists. In this study, four groups of electrospun nanofibrous scaffolds were compared: polycaprolactone (PCL), PCL/collagen, PCL/gelatin and PCL/chitosan. Each of the scaffolds were tissue-engineered with human corneal endothelial cells (HCEC-B4G12) and analyzed with regard to their potential application as artificial posterior lamellar grafts. Staining with ZO-1 and Na+/K+-ATPase antibodies revealed intact cell functionalities. It could be shown, that blending leads to decreasing contact angle, whereby a heterogeneous blend morphology could be revealed. Scaffold cytocompatibility could be confirmed for all groups via live/dead staining, whereby a significant higher cell viability could be observed for the collagen and gelatine blended matrices with 97 ± 3% and 98 ± 2% living cells respectively. TEM images show the superficial anchoring of the HCECs onto the scaffolds. This work emphasizes the benefit of blended PCL nanofibrous scaffolds for corneal endothelial keratoplasty.
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Vogt L, Ruther F, Salehi S, Boccaccini AR. Poly(Glycerol Sebacate) in Biomedical Applications-A Review of the Recent Literature. Adv Healthc Mater 2021; 10:e2002026. [PMID: 33733604 DOI: 10.1002/adhm.202002026] [Citation(s) in RCA: 73] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 02/10/2021] [Indexed: 12/13/2022]
Abstract
Poly(glycerol sebacate) (PGS) continues to attract attention for biomedical applications owing to its favorable combination of properties. Conventionally polymerized by a two-step polycondensation of glycerol and sebacic acid, variations of synthesis parameters, reactant concentrations or by specific chemical modifications, PGS materials can be obtained exhibiting a wide range of physicochemical, mechanical, and morphological properties for a variety of applications. PGS has been extensively used in tissue engineering (TE) of cardiovascular, nerve, cartilage, bone and corneal tissues. Applications of PGS based materials in drug delivery systems and wound healing are also well documented. Research and development in the field of PGS continue to progress, involving mainly the synthesis of modified structures using copolymers, hybrid, and composite materials. Moreover, the production of self-healing and electroactive materials has been introduced recently. After almost 20 years of research on PGS, previous publications have outlined its synthesis, modification, properties, and biomedical applications, however, a review paper covering the most recent developments in the field is lacking. The present review thus covers comprehensively literature of the last five years on PGS-based biomaterials and devices focusing on advanced modifications of PGS for applications in medicine and highlighting notable advances of PGS based systems in TE and drug delivery.
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Affiliation(s)
- Lena Vogt
- Institute of Biomaterials University Erlangen‐Nuremberg Erlangen 91058 Germany
| | - Florian Ruther
- Institute of Biomaterials University Erlangen‐Nuremberg Erlangen 91058 Germany
| | - Sahar Salehi
- Chair of Biomaterials University of Bayreuth Bayreuth 95447 Germany
| | - Aldo R. Boccaccini
- Institute of Biomaterials University Erlangen‐Nuremberg Erlangen 91058 Germany
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Fabrication and characterization of core–shell TiO2-containing nanofibers of PCL-zein by coaxial electrospinning method as an erythromycin drug carrier. Polym Bull (Berl) 2021. [DOI: 10.1007/s00289-021-03591-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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15
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Martín-Cabezuelo R, Vilariño-Feltrer G, Vallés-Lluch A. Influence of pre-polymerisation atmosphere on the properties of pre- and poly(glycerol sebacate). MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 119:111429. [PMID: 33321580 DOI: 10.1016/j.msec.2020.111429] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 07/29/2020] [Accepted: 08/20/2020] [Indexed: 01/21/2023]
Abstract
Poly(glycerol sebacate) (PGS) is a versatile biodegradable biomaterial on account of its adjustable mechanical properties as an elastomeric polyester. Nevertheless, it has shown dissimilar results when synthesised by different research groups under equivalent synthesis conditions. This lack of reproducibility proves how crucial it is to understand the effect of the parameters involved on its manufacturing and characterize the polymer networks obtained. Several studies have been conducted in recent years to understand the role of temperature, time, and the molar ratio of its monomers, while the influence of the atmosphere applied during its pre-polymerisation remained unknown. The results obtained here allow for a better understanding about the effect of inert (Ar and N2) and oxidative (oxygen, dry air, and humid air) atmospheres on the extent of the reaction. The molecular pattern of intermediate pre-polymers and the gelation time and morphology of their corresponding cured PGS networks were studied as well. Overall, inert atmospheres promote a rather linear growth of macromers, with scarce branches, resulting in loose elastomers with long chains mainly crosslinked. Conversely, oxygen in the latter atmospheres promotes branching through secondary hydroxyl groups, leading to less-crosslinked 'defective' networks. In this way, the pre-polymerisation atmosphere could be used advantageously to adjust the reactivity of secondary hydroxyls, in order to modulate branching in the elastomeric PGS networks obtained to suit the properties required in a particular application.
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Affiliation(s)
- Rubén Martín-Cabezuelo
- Centre for Biomaterials and Tissue Engineering, Universitat Politècnica de València, Spain
| | | | - Ana Vallés-Lluch
- Centre for Biomaterials and Tissue Engineering, Universitat Politècnica de València, Spain; Biomedical Research Networking Centre in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Valencia, Spain.
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16
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Petroll WM, Varner VD, Schmidtke DW. Keratocyte mechanobiology. Exp Eye Res 2020; 200:108228. [PMID: 32919993 PMCID: PMC7655662 DOI: 10.1016/j.exer.2020.108228] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 08/31/2020] [Accepted: 09/02/2020] [Indexed: 01/22/2023]
Abstract
In vivo, corneal keratocytes reside within a complex 3D extracellular matrix (ECM) consisting of highly aligned collagen lamellae, growth factors, and other extracellular matrix components, and are subjected to various mechanical stimuli during developmental morphogenesis, fluctuations in intraocular pressure, and wound healing. The process by which keratocytes convert changes in mechanical stimuli (e.g. local topography, applied force, ECM stiffness) into biochemical signaling is known as mechanotransduction. Activation of the various mechanotransductive pathways can produce changes in cell migration, proliferation, and differentiation. Here we review how corneal keratocytes respond to and integrate different biochemical and biophysical factors. We first highlight how growth factors and other cytokines regulate the activity of Rho GTPases, cytoskeletal remodeling, and ultimately the mechanical phenotype of keratocytes. We then discuss how changes in the mechanical properties of the ECM have been shown to regulate keratocyte behavior in sophisticated 2D and 3D experimental models of the corneal microenvironment. Finally, we discuss how ECM topography and protein composition can modulate cell phenotypes, and review the different methods of fabricating in vitro mimics of corneal ECM topography, novel approaches for examining topographical effects in vivo, and the impact of different ECM glycoproteins and proteoglycans on keratocyte behavior.
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Affiliation(s)
- W Matthew Petroll
- Department of Ophthalmology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA.
| | - Victor D Varner
- Department of Bioengineering, University of Texas at Dallas, Richardson, TX 75080, USA; Department of Surgery, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - David W Schmidtke
- Department of Bioengineering, University of Texas at Dallas, Richardson, TX 75080, USA; Department of Surgery, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
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17
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Ponjavic M, Nikolic MS, Stevanovic S, Nikodinovic-Runic J, Jeremic S, Pavic A, Djonlagic J. Hydrolytic degradation of star-shaped poly(ε-caprolactone)s with different number of arms and their cytotoxic effects. J BIOACT COMPAT POL 2020. [DOI: 10.1177/0883911520951826] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Star-shaped polymers of biodegradable aliphatic polyester, poly( ε-caprolactone), PCL, with different number of arms (three, four, and six) were synthesized by ring-opening polymerization initiated by multifunctional alcohols used as cores. As potential biomaterials, synthesized star-shaped poly( ε-caprolactone)s, sPCL, were thoroughly characterized in terms of their degradation under different pH conditions and in respect to their cytotoxicity. The in vitro degradation was performed in phosphate buffer (pH 7.4) and hydrochloric acid solution (pH 1.0) over 5 weeks. Degradation of sPCL films was followed by the weight loss measurements, GPC, FTIR, and AFM analysis. While the most of the samples were stable against the abiotic hydrolysis at pH 7.4 after 5 weeks of degradation, degradation was significantly accelerated in the acidic medium. Degradation rate of polymer films was affected by the polymer architecture and molecular weight. The molecular weight profiles during the degradation revealed random chain scission of the ester bonds indicating bulk degradation mechanism of hydrolysis at pH 7.4, while acidic hydrolysis proceeded through the bulk degradation associated with surface erosion, confirmed by AFM. The in vitro toxicity tests, cytotoxicity applying normal human fibroblasts (MRC5) and embryotoxicity assessment (using zebra fish model, Danio rerio), suggested those polymeric materials as suitable for biomedical application.
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Affiliation(s)
- Marijana Ponjavic
- Faculty of Technology and Metallurgy, University of Belgrade, Belgrade, Serbia
| | - Marija S Nikolic
- Faculty of Technology and Metallurgy, University of Belgrade, Belgrade, Serbia
| | - Sanja Stevanovic
- Institute of Chemistry, Technology and Metallurgy, University of Belgrade, Belgrade, Serbia
| | | | - Sanja Jeremic
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Belgrade, Serbia
| | - Aleksandar Pavic
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Belgrade, Serbia
| | - Jasna Djonlagic
- Faculty of Technology and Metallurgy, University of Belgrade, Belgrade, Serbia
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18
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Fakhrali A, Semnani D, Salehi H, Ghane M. Electrospun
PGS
/
PCL
nanofibers: From straight to sponge and
spring‐like
morphology. POLYM ADVAN TECHNOL 2020. [DOI: 10.1002/pat.5038] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Aref Fakhrali
- Department of Textile Engineering Isfahan University of Technology Isfahan Iran
| | - Dariush Semnani
- Department of Textile Engineering Isfahan University of Technology Isfahan Iran
| | - Hossein Salehi
- Department of Anatomical Sciences and Molecular Biology, School of Medicine Isfahan University of Medical Sciences Isfahan Iran
| | - Mohammad Ghane
- Department of Textile Engineering Isfahan University of Technology Isfahan Iran
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19
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Yu J, Huang X, Zhou X, Han Q, Zhou W, Liang J, Xu HHK, Ren B, Peng X, Weir MD, Li M, Cheng L. Anti-caries effect of resin infiltrant modified by quaternary ammonium monomers. J Dent 2020; 97:103355. [PMID: 32380134 DOI: 10.1016/j.jdent.2020.103355] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 04/24/2020] [Accepted: 04/28/2020] [Indexed: 02/05/2023] Open
Abstract
OBJECTIVES Resin infiltrant is used in early enamel caries. However, commercial resin infiltrant lacks persistent antibacterial activity. Dimethylaminododecyl methacrylate (DMADDM) was added to resin infiltrant to give it sustainable antibacterial properties and inhibit demineralization. METHODS After the application of resin infiltrant to bovine enamel, cytotoxicity, surface roughness, and aesthetics were assessed. A multi-species biofilm was incubated on the enamel disk before and one month after microbial-aging. After a 48-h anaerobic incubation, biomass accumulation, metabolic activity, and lactic acid were analyzed using a crystal violet assay, an MTT (3-(4,5-dimethyl-thiazol-2-yl)-2,5-diphenyltetrazolium bromide) assay, and a lactic acid assay. Biofilm structure and composition were determined by live/dead staining, exopolysaccharide (EPS) staining, scanning electron microscopy (SEM), and quantitative polymerase chain reaction (qPCR). The depth and content of demineralization were tested by transverse microradiography (TMR). RESULTS Incorporating DMADDM did not increase the cytotoxicity or change the physical properties when the mass fraction of the DMADDM was 2.5-10 %. The modification decreased the amount of bacterial biofilm, metabolic activity, lactic acid production, EPS, and the proportion of Streptococcus mutans in the biofilms. It also provided anti-demineralization effects. The surface roughness and antibacterial ability were not changed after one month of microbial-aging. CONCLUSION The incorporation of DMADDM improved the antibacterial and anti-demineralization effects of the material. It demonstrated a sustained antibacterial effect. CLINICAL SIGNIFICANCE The antibacterial modification might be a potential choice for future clinical applications to inhibit early enamel caries.
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Affiliation(s)
- Jinzhao Yu
- State Key Laboratory of Oral Diseases, Department of Cariology and Endodontics, West China Hospital of Stomatology, National Clinical Research Centre for Oral Diseases, Sichuan University, Chengdu, 610041, China; Department of Endodontics, Stomatological Hospital, Southern Medical University, Guangzhou, 510280, China
| | - Xiaoyu Huang
- State Key Laboratory of Oral Diseases, Department of Cariology and Endodontics, West China Hospital of Stomatology, National Clinical Research Centre for Oral Diseases, Sichuan University, Chengdu, 610041, China
| | - Xuedong Zhou
- State Key Laboratory of Oral Diseases, Department of Cariology and Endodontics, West China Hospital of Stomatology, National Clinical Research Centre for Oral Diseases, Sichuan University, Chengdu, 610041, China
| | - Qi Han
- State Key Laboratory of Oral Diseases, Department of Cariology and Endodontics, West China Hospital of Stomatology, National Clinical Research Centre for Oral Diseases, Sichuan University, Chengdu, 610041, China
| | - Wen Zhou
- State Key Laboratory of Oral Diseases, Department of Cariology and Endodontics, West China Hospital of Stomatology, National Clinical Research Centre for Oral Diseases, Sichuan University, Chengdu, 610041, China
| | - Jingou Liang
- State Key Laboratory of Oral Diseases, Department of Cariology and Endodontics, West China Hospital of Stomatology, National Clinical Research Centre for Oral Diseases, Sichuan University, Chengdu, 610041, China
| | - Hockin H K Xu
- Department of Advanced Oral Sciences and Therapeutics, University of Maryland School of Dentistry, Baltimore, MD, 21201, USA
| | - Biao Ren
- State Key Laboratory of Oral Diseases, Department of Cariology and Endodontics, West China Hospital of Stomatology, National Clinical Research Centre for Oral Diseases, Sichuan University, Chengdu, 610041, China
| | - Xian Peng
- State Key Laboratory of Oral Diseases, Department of Cariology and Endodontics, West China Hospital of Stomatology, National Clinical Research Centre for Oral Diseases, Sichuan University, Chengdu, 610041, China
| | - Michael D Weir
- Department of Advanced Oral Sciences and Therapeutics, University of Maryland School of Dentistry, Baltimore, MD, 21201, USA
| | - Mingyun Li
- State Key Laboratory of Oral Diseases, Department of Cariology and Endodontics, West China Hospital of Stomatology, National Clinical Research Centre for Oral Diseases, Sichuan University, Chengdu, 610041, China.
| | - Lei Cheng
- State Key Laboratory of Oral Diseases, Department of Cariology and Endodontics, West China Hospital of Stomatology, National Clinical Research Centre for Oral Diseases, Sichuan University, Chengdu, 610041, China.
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20
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Fernández-Pérez J, Kador KE, Lynch AP, Ahearne M. Characterization of extracellular matrix modified poly(ε-caprolactone) electrospun scaffolds with differing fiber orientations for corneal stroma regeneration. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 108:110415. [DOI: 10.1016/j.msec.2019.110415] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Revised: 11/08/2019] [Accepted: 11/09/2019] [Indexed: 10/25/2022]
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21
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Denatured acellular dermal matrix seeded with bone marrow mesenchymal stem cells for wound healing in mice. Burns 2019; 45:1685-1694. [DOI: 10.1016/j.burns.2019.04.017] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 04/02/2019] [Accepted: 04/16/2019] [Indexed: 12/15/2022]
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22
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Vogt L, Rivera LR, Liverani L, Piegat A, El Fray M, Boccaccini AR. Poly(ε-caprolactone)/poly(glycerol sebacate) electrospun scaffolds for cardiac tissue engineering using benign solvents. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 103:109712. [DOI: 10.1016/j.msec.2019.04.091] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Revised: 04/19/2019] [Accepted: 04/29/2019] [Indexed: 11/30/2022]
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23
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Sahle FF, Kim S, Niloy KK, Tahia F, Fili CV, Cooper E, Hamilton DJ, Lowe TL. Nanotechnology in regenerative ophthalmology. Adv Drug Deliv Rev 2019; 148:290-307. [PMID: 31707052 PMCID: PMC7474549 DOI: 10.1016/j.addr.2019.10.006] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 10/29/2019] [Accepted: 10/30/2019] [Indexed: 12/18/2022]
Abstract
In recent years, regenerative medicine is gaining momentum and is giving hopes for restoring function of diseased, damaged, and aged tissues and organs and nanotechnology is serving as a catalyst. In the ophthalmology field, various types of allogenic and autologous stem cells have been investigated to treat some ocular diseases due to age-related macular degeneration, glaucoma, retinitis pigmentosa, diabetic retinopathy, and corneal and lens traumas. Nanomaterials have been utilized directly as nanoscaffolds for these stem cells to promote their adhesion, proliferation and differentiation or indirectly as vectors for various genes, tissue growth factors, cytokines and immunosuppressants to facilitate cell reprogramming or ocular tissue regeneration. In this review, we reviewed various nanomaterials used for retina, cornea, and lens regenerations, and discussed the current status and future perspectives of nanotechnology in tracking cells in the eye and personalized regenerative ophthalmology. The purpose of this review is to provide comprehensive and timely insights on the emerging field of nanotechnology for ocular tissue engineering and regeneration.
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Affiliation(s)
- Fitsum Feleke Sahle
- Department of Pharmaceutical Sciences, University of Tennessee Health Sciences Center, Memphis, TN 38163, USA
| | - Sangyoon Kim
- Department of Pharmaceutical Sciences, University of Tennessee Health Sciences Center, Memphis, TN 38163, USA
| | - Kumar Kulldeep Niloy
- Department of Pharmaceutical Sciences, University of Tennessee Health Sciences Center, Memphis, TN 38163, USA
| | - Faiza Tahia
- Department of Pharmaceutical Sciences, University of Tennessee Health Sciences Center, Memphis, TN 38163, USA
| | - Cameron V Fili
- Department of Comparative Medicine, University of Tennessee Health Sciences Center, Memphis, TN 38163, USA
| | - Emily Cooper
- Department of Pharmaceutical Sciences, University of Tennessee Health Sciences Center, Memphis, TN 38163, USA
| | - David J Hamilton
- Department of Comparative Medicine, University of Tennessee Health Sciences Center, Memphis, TN 38163, USA
| | - Tao L Lowe
- Department of Pharmaceutical Sciences, University of Tennessee Health Sciences Center, Memphis, TN 38163, USA.
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24
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Sadeghi A, Moztarzadeh F, Aghazadeh Mohandesi J. Investigating the effect of chitosan on hydrophilicity and bioactivity of conductive electrospun composite scaffold for neural tissue engineering. Int J Biol Macromol 2019; 121:625-632. [DOI: 10.1016/j.ijbiomac.2018.10.022] [Citation(s) in RCA: 92] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 09/21/2018] [Accepted: 10/05/2018] [Indexed: 12/23/2022]
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25
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Zhang K, Wang Y, Sun T, Wang B, Zhang H. Bioinspired Surface Functionalization for Improving Osteogenesis of Electrospun Polycaprolactone Nanofibers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:15544-15550. [PMID: 30418771 DOI: 10.1021/acs.langmuir.8b03357] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Electrospun nanofibers, with a typical interconnected porous structure mimicking the extracellular matrix, are commonly used in bone tissue engineering. However, to the best of our knowledge, few studies have been reported to investigate the enhancement of osteogenesis capability of electrospun polycaprolactone (PCL) nanofibers based on bioinspired surface functionalization. In this study, a universal and versatile approach was proposed to spontaneously modify the electrospun PCL nanofibers with bioactive nano-hydroxyapatite (nHA), using dopamine as an effective bioadhesive agent. The evaluation of scanning electron microscopy, energy-dispersive spectroscopy, Fourier transform infrared spectroscopy, thermogravimetric analysis, and surface wettability indicated that nHA was successfully coated onto electrospun nanofibers (PCL-PDHA). Furthermore, in vitro cell experiment including adhesion, proliferation, and osteogenic capability and in vitro biomineralization test in simulated body fluid revealed that the PCL-PDHA nanofibers were biocompatible to MC3T3-E1 cells, and the osteogenesis and biomineralization capabilities were greatly improved in comparison with that of PCL nanofibers. In summary, the facile bioinspired surface functionalization method introduced in the present study, due to its universality and versatility, not only can be used to improve osteogenesis of electrospun nanofibers but also can be regarded as an avenue to achieve other predesigned purposes in biomedical engineering.
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Affiliation(s)
- Kuan Zhang
- Institute of Chemical Engineering, College of Materials and Chemical Engineering , Hainan University , Haikou 570228 , China
- State Key Laboratory of Tribology, Department of Mechanical Engineering , Tsinghua University , Beijing 100084 , China
| | - Yi Wang
- State Key Laboratory of Tribology, Department of Mechanical Engineering , Tsinghua University , Beijing 100084 , China
| | - Tao Sun
- State Key Laboratory of Tribology, Department of Mechanical Engineering , Tsinghua University , Beijing 100084 , China
| | - Bo Wang
- Institute of Chemical Engineering, College of Materials and Chemical Engineering , Hainan University , Haikou 570228 , China
| | - Hongyu Zhang
- State Key Laboratory of Tribology, Department of Mechanical Engineering , Tsinghua University , Beijing 100084 , China
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26
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Soares RM, Siqueira NM, Prabhakaram MP, Ramakrishna S. Electrospinning and electrospray of bio-based and natural polymers for biomaterials development. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 92:969-982. [DOI: 10.1016/j.msec.2018.08.004] [Citation(s) in RCA: 134] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Revised: 07/12/2018] [Accepted: 08/02/2018] [Indexed: 01/13/2023]
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27
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Zhao C, Wu X, Chen G, Wang F, Ren J. AuNPs-PCL nanocomposite accelerated abdominal wound healing through photothermal effect and improving cell adhesion. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2018; 29:2035-2049. [PMID: 30235107 DOI: 10.1080/09205063.2018.1526460] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Accelerating wound healing with modified biomaterial has been an attracting field in both material science and medicine. Enhanced cell adhesion could be acquired by improving surface hydrophilicity, which contributes to accelerating wound healing. Chemical reaction has been used for surface modification, but this study used a simple and nontoxic method to improve the hydrophilicity. Polycaprolactone (PCL) scaffold has been regarded as promising material for wound healing while its surface is hydrophobic. Our study demonstrated enhanced hydrophilicity of PCL with AuNPs coating. AuNPs has good biocompatibility and excellent photothermal effect. The coating of AuNPs not only improved the cell adhesion, but also gave PCL the ability to inhibit the growth of bacteria. Animal study showed that the nanocomposites decreased lymphocytes and neutrophils, increased neovascularization and accelerated the abdominal wound healing, which was attributed to improved hydrophilicity and the antibacterial ability. In conclusion, we demonstrated that the nanocomposite could be used as a potential scaffold for cell adhesion and wound healing, and the role of AuNPs was highlighted as a kind of outstanding supplement.
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Affiliation(s)
- Cheng Zhao
- a Department of Surgery , Jinling Hospital, Medical School of Nanjing University , Nanjing , China
| | - Xiuwen Wu
- a Department of Surgery , Jinling Hospital, Medical School of Nanjing University , Nanjing , China
| | - Guopu Chen
- a Department of Surgery , Jinling Hospital, Medical School of Nanjing University , Nanjing , China
| | - Feng Wang
- b Department of Surgery , Jinling Hospital , Nanjing , China
| | - Jianan Ren
- a Department of Surgery , Jinling Hospital, Medical School of Nanjing University , Nanjing , China
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28
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Martins AF, Facchi SP, da Câmara PCF, Camargo SEA, Camargo CHR, Popat KC, Kipper MJ. Novel poly(ε-caprolactone)/amino-functionalized tannin electrospun membranes as scaffolds for tissue engineering. J Colloid Interface Sci 2018; 525:21-30. [PMID: 29680300 DOI: 10.1016/j.jcis.2018.04.060] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2018] [Revised: 04/13/2018] [Accepted: 04/15/2018] [Indexed: 12/21/2022]
Abstract
Poly(ε-caprolactone) (PCL) is a hydrophobic and cytocompatible aliphatic polyester that has been used to produce PCL-based nanofibrous for both wound healing and tissue repair. However, the high hydrophobicity and low water adsorptive have been challenges for developing PCL-based materials for use in tissue engineering field. Here, we report a new polymer (a hydrophilic amino-functionalized tannin (TN)) that is associated with PCL for developing PCL-TN blends at different PCL:TN weight ratios (100:0, 95:5, 85:15 and 78:22). PCL:TN ratio may be tuned to modulate hydrophilicity and cytocompatibility of the nanofibers. The neutralization step and surface wettability played an important role in the attachment of human adipose-derived stem cells (ADSC cells) on PCL-TN membranes. Also, fluorescence images confirmed great proliferation of ADSC cells on the PCL-TN electrospun surfaces. Yet, neutralized PCL-TN nanofibers promoted bactericidal activity against Pseudomonas aeruginosa. These membranes have potential to be used as scaffolds for tissue engineering purposes.
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Affiliation(s)
- Alessandro F Martins
- Postgraduate Program in Materials Science & Engineering (PPGCEM), Federal University of Technology (UTFPR-LD), 86036-370 Londrina, PR, Brazil; Postgraduate Program in Environmental Engineering (PPGEA), Federal University of Technology (UTFPR-AP), 86812-460 Apucarana, PR, Brazil; Department of Chemical and Biological Engineering, Colorado State University, 1370 Campus Delivery, Fort Collins, CO, United States.
| | - Suelen P Facchi
- Postgraduate Program in Environmental Engineering (PPGEA), Federal University of Technology (UTFPR-AP), 86812-460 Apucarana, PR, Brazil
| | - Paulo C F da Câmara
- Department of Chemical and Biological Engineering, Colorado State University, 1370 Campus Delivery, Fort Collins, CO, United States
| | - Samira E A Camargo
- Department of Chemical and Biological Engineering, Colorado State University, 1370 Campus Delivery, Fort Collins, CO, United States
| | - Carlos H R Camargo
- Department of Chemical and Biological Engineering, Colorado State University, 1370 Campus Delivery, Fort Collins, CO, United States
| | - Ketul C Popat
- Department of Chemical and Biological Engineering, Colorado State University, 1370 Campus Delivery, Fort Collins, CO, United States
| | - Matt J Kipper
- Department of Chemical and Biological Engineering, Colorado State University, 1370 Campus Delivery, Fort Collins, CO, United States
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29
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Daelemans L, Steyaert I, Schoolaert E, Goudenhooft C, Rahier H, De Clerck K. Nanostructured Hydrogels by Blend Electrospinning of Polycaprolactone/Gelatin Nanofibers. NANOMATERIALS 2018; 8:nano8070551. [PMID: 30036979 PMCID: PMC6070828 DOI: 10.3390/nano8070551] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 07/11/2018] [Accepted: 07/17/2018] [Indexed: 12/15/2022]
Abstract
Nanofibrous membranes based on polycaprolactone (PCL) have a large potential for use in biomedical applications but are limited by the hydrophobicity of PCL. Blend electrospinning of PCL with other biomedical suited materials, such as gelatin (Gt) allows for the design of better and new materials. This study investigates the possibility of blend electrospinning PCL/Gt nanofibrous membranes which can be used to design a range of novel materials better suited for biomedical applications. The electrospinnability and stability of PCL/Gt blend nanofibers from a non-toxic acid solvent system are investigated. The solvent system developed in this work allows good electrospinnable emulsions for the whole PCL/Gt composition range. Uniform bead-free nanofibers can easily be produced, and the resulting fiber diameter can be tuned by altering the total polymer concentration. Addition of small amounts of water stabilizes the electrospinning emulsions, allowing the electrospinning of large and homogeneous nanofibrous structures over a prolonged period. The resulting blend nanofibrous membranes are analyzed for their composition, morphology, and homogeneity. Cold-gelling experiments on these novel membranes show the possibility of obtaining water-stable PCL/Gt nanofibrous membranes, as well as nanostructured hydrogels reinforced with nanofibers. Both material classes provide a high potential for designing new material applications.
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Affiliation(s)
- Lode Daelemans
- Department of Materials, Textiles and Chemical Engineering (MaTCh), Ghent University, Technologiepark 907, 9052 Ghent, Belgium.
| | - Iline Steyaert
- Department of Materials, Textiles and Chemical Engineering (MaTCh), Ghent University, Technologiepark 907, 9052 Ghent, Belgium.
- Research Unit of Physical Chemistry and Polymer Science, Department of Materials and Chemistry, Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, Belgium.
| | - Ella Schoolaert
- Department of Materials, Textiles and Chemical Engineering (MaTCh), Ghent University, Technologiepark 907, 9052 Ghent, Belgium.
| | - Camille Goudenhooft
- Department of Materials, Textiles and Chemical Engineering (MaTCh), Ghent University, Technologiepark 907, 9052 Ghent, Belgium.
| | - Hubert Rahier
- Research Unit of Physical Chemistry and Polymer Science, Department of Materials and Chemistry, Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, Belgium.
| | - Karen De Clerck
- Department of Materials, Textiles and Chemical Engineering (MaTCh), Ghent University, Technologiepark 907, 9052 Ghent, Belgium.
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30
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Kim JI, Kim JY, Park CH. Fabrication of transparent hemispherical 3D nanofibrous scaffolds with radially aligned patterns via a novel electrospinning method. Sci Rep 2018; 8:3424. [PMID: 29467436 PMCID: PMC5821851 DOI: 10.1038/s41598-018-21618-0] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Accepted: 02/07/2018] [Indexed: 12/13/2022] Open
Abstract
Tissue engineering has significantly contributed to the development of optimal treatments for individual injury sites based on their unique functional and histologic properties. Human organs and tissue have three-dimensional (3D) morphologies; for example, the morphology of the eye is a spherical shape. However, most conventional electrospinning equipment is only capable of fabricating a two-dimensional (2D) structured fibrous scaffold and no report is available on a 3D electrospinning method to fabricate a hemispherical scaffold to mimic the native properties of the cornea, including microscopic to macroscopic morphology and transparency. We proposed a novel electrospinning method using a single nonconductive hemispherical device and a metal pin. A designed peg-top shaped collector, a hemispherical nonconductive device with a metal pin in the center and copper wire forming a circle around at the edge was attached to a conventional conductive collector. A 3D hemispherical transparent scaffold with radially aligned nanofibers was successfully fabricated with the designed peg-top collector. In summary, our fabricated 3D electrospun scaffold is expected to be suitable for the treatment of injuries of ocular tissues owing to the hemispherical shape and radially aligned nanofibers which can guide the direction of the main collagen and cellular actin filament in the extracellular matrix.
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Affiliation(s)
- Jeong In Kim
- Department of Bionanosystem Engineering, Graduate School, Chonbuk National University, Jeonju, 561-756, Republic of Korea
| | - Ju Yeon Kim
- Division of Mechanical Design Engineering, College of Engineering, Chonbuk National University, Jeonju, 561-756, Republic of Korea
| | - Chan Hee Park
- Department of Bionanosystem Engineering, Graduate School, Chonbuk National University, Jeonju, 561-756, Republic of Korea.
- Division of Mechanical Design Engineering, College of Engineering, Chonbuk National University, Jeonju, 561-756, Republic of Korea.
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Herrero-Herrero M, Gómez-Tejedor J, Vallés-Lluch A. PLA/PCL electrospun membranes of tailored fibres diameter as drug delivery systems. Eur Polym J 2018. [DOI: 10.1016/j.eurpolymj.2017.12.045] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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32
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Ren K, Wang Y, Sun T, Yue W, Zhang H. Electrospun PCL/gelatin composite nanofiber structures for effective guided bone regeneration membranes. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 78:324-332. [DOI: 10.1016/j.msec.2017.04.084] [Citation(s) in RCA: 221] [Impact Index Per Article: 31.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Revised: 04/13/2017] [Accepted: 04/15/2017] [Indexed: 11/15/2022]
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