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Song JE, Sim BR, Jeon YS, Kim HS, Shin EY, Carlomagno C, Khang G. Characterization of surface modified glycerol/silk fibroin film for application to corneal endothelial cell regeneration. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2019; 30:263-275. [PMID: 30324858 DOI: 10.1080/09205063.2018.1535819] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Corneal endothelial cells (CEnCs) play a fundamental role in maintaining the transparency of the cornea. CEnCs lose their full proliferating capacity when tissue damages occur. The loss in proliferation rate is associated with corneal edema and decrease in visual acuity, leading in severe cases, to blindness. In these situations, a corneal transplant is usually needed to restore the original tissue functions. Tissue engineering is an efficient alternative for the production of implantable films, which can regenerate the tissue functions regulating at the same time the immune-response. In this study, we proposed a stable and transparent film, composed of silk fibroin modified with glycerol (G/SF), as a potential substrate for corneal endothelial cells regeneration. Our results confirmed that G/SF films have a uniform structure, rougher surface and lower thickness respect to the SF film. In vitro tests show that G/SF films can induce a slight increase in CEnCs initial adhesion and proliferation rate if compared with the SF film. Morphology and gene expression evaluations demonstrated that the bioactive effects of silk fibroin were not affected by the presence of glycerol. For this reason, the G/SF films are suitable as CEnCs carrier and promising for the corneal damages treatments.
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Affiliation(s)
- Jeong Eun Song
- a Department of BIN Convergence Technology, Department of PolymerNano Science & Technology and Polymer Materials Fusion Research Center , Chonbuk National University , Jeonju-si , Jeollabuk-do , Republic of Korea
| | - Bo Ra Sim
- a Department of BIN Convergence Technology, Department of PolymerNano Science & Technology and Polymer Materials Fusion Research Center , Chonbuk National University , Jeonju-si , Jeollabuk-do , Republic of Korea
| | - Yoo Shin Jeon
- a Department of BIN Convergence Technology, Department of PolymerNano Science & Technology and Polymer Materials Fusion Research Center , Chonbuk National University , Jeonju-si , Jeollabuk-do , Republic of Korea
| | - Han Sol Kim
- a Department of BIN Convergence Technology, Department of PolymerNano Science & Technology and Polymer Materials Fusion Research Center , Chonbuk National University , Jeonju-si , Jeollabuk-do , Republic of Korea
| | - Eun Yeong Shin
- a Department of BIN Convergence Technology, Department of PolymerNano Science & Technology and Polymer Materials Fusion Research Center , Chonbuk National University , Jeonju-si , Jeollabuk-do , Republic of Korea
| | - Cristiano Carlomagno
- b Department of Industrial Engineering, BIOTech Research Center and European Institute of Excellence on Tissue Engineering and Regenerative Medicine , University of Trento , Trento , Italy
| | - Gilson Khang
- a Department of BIN Convergence Technology, Department of PolymerNano Science & Technology and Polymer Materials Fusion Research Center , Chonbuk National University , Jeonju-si , Jeollabuk-do , Republic of Korea
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Desbrieres J, Peptu C, Ochiuz L, Savin C, Popa M, Vasiliu S. Application of Chitosan-Based Formulations in Controlled Drug Delivery. SUSTAINABLE AGRICULTURE REVIEWS 36 2019. [DOI: 10.1007/978-3-030-16581-9_7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Harvey DJ. Analysis of carbohydrates and glycoconjugates by matrix-assisted laser desorption/ionization mass spectrometry: An update for 2013-2014. MASS SPECTROMETRY REVIEWS 2018; 37:353-491. [PMID: 29687922 DOI: 10.1002/mas.21530] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Accepted: 11/29/2016] [Indexed: 06/08/2023]
Abstract
This review is the eighth update of the original article published in 1999 on the application of Matrix-assisted laser desorption/ionization mass spectrometry (MALDI) mass spectrometry to the analysis of carbohydrates and glycoconjugates and brings coverage of the literature to the end of 2014. Topics covered in the first part of the review include general aspects such as theory of the MALDI process, matrices, derivatization, MALDI imaging, fragmentation, and arrays. The second part of the review is devoted to applications to various structural types such as oligo- and poly- saccharides, glycoproteins, glycolipids, glycosides, and biopharmaceuticals. Much of this material is presented in tabular form. The third part of the review covers medical and industrial applications of the technique, studies of enzyme reactions, and applications to chemical synthesis. © 2018 Wiley Periodicals, Inc. Mass Spec Rev 37:353-491, 2018.
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Affiliation(s)
- David J Harvey
- Target Discovery Institute, Nuffield Department of Medicine, University of Oxford, Roosevelt Drive, Oxford, OX3 7FZ, United Kingdom
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Al Abdulsalam NK, Barnett NL, Harkin DG, Walshe J. Cultivation of corneal endothelial cells from sheep. Exp Eye Res 2018; 173:24-31. [PMID: 29680447 DOI: 10.1016/j.exer.2018.04.011] [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: 02/06/2018] [Revised: 03/29/2018] [Accepted: 04/16/2018] [Indexed: 11/29/2022]
Abstract
Research is currently under way to produce tissue engineered corneal endothelium transplants for therapeutic use in humans. This work requires the use of model animals, both for the supply of corneal endothelial cells (CECs) for experimentation, and to serve as recipients for test transplants. A variety of species can be used, however, a number of important advantages can be gained by using sheep as transplant recipients. The purpose of the present study was therefore to develop a method for culturing sheep CECs that would be suitable for the eventual construction of corneal endothelium grafts destined for sheep subjects. A method was established for culturing sheep CECs and these were compared to cultured human CECs. Results showed that cultured sheep and human CECs had similar growth characteristics when expanded from corneal endothelium explants on gelatin-coated plates, and achieved similar cell densities after several weeks. Furthermore, the markers zonula occludens-1, N-cadherin and sodium potassium ATPase could be immunodetected in similar staining patterns at cell boundaries of cultured CECs from both species. This work represents the first detailed study of sheep CEC cultures, and is the first demonstration of their similarities to human CEC cultures. Our results indicate that sheep CECs would be an appropriate substitute for human CECs when developing methods to produce tissue engineered corneal endothelium transplants.
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Affiliation(s)
- Najla Khaled Al Abdulsalam
- Queensland Eye Institute, 140 Melbourne Street, South Brisbane, Queensland, 4101, Australia; School of Biomedical Science, Queensland University of Technology, 2 George Street, Brisbane, Queensland, 4001, Australia; King Faisal University, Hofuf, Saudi Arabia
| | - Nigel L Barnett
- Queensland Eye Institute, 140 Melbourne Street, South Brisbane, Queensland, 4101, Australia; School of Biomedical Science, Queensland University of Technology, 2 George Street, Brisbane, Queensland, 4001, Australia; The University of Queensland, UQ Centre for Clinical Research, Herston, Queensland, 4029, Australia
| | - Damien G Harkin
- Queensland Eye Institute, 140 Melbourne Street, South Brisbane, Queensland, 4101, Australia; School of Biomedical Science, Queensland University of Technology, 2 George Street, Brisbane, Queensland, 4001, Australia
| | - Jennifer Walshe
- Queensland Eye Institute, 140 Melbourne Street, South Brisbane, Queensland, 4101, Australia.
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55
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Ophthalmic gels: Past, present and future. Adv Drug Deliv Rev 2018; 126:113-126. [PMID: 29288733 DOI: 10.1016/j.addr.2017.12.017] [Citation(s) in RCA: 102] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2017] [Revised: 11/06/2017] [Accepted: 12/22/2017] [Indexed: 11/21/2022]
Abstract
Aqueous gels formulated using hydrophilic polymers (hydrogels) along with those based on stimuli responsive polymers (in situ gelling or gel forming systems) continue to attract increasing interest for various eye health-related applications. They allow the incorporation of a variety of ophthalmic pharmaceuticals to achieve therapeutic levels of drugs and bioactives at target ocular sites. The integration of sophisticated drug delivery technologies such as nanotechnology-based ones with intelligent and environment responsive systems can extend current treatment duration to provide more clinically relevant time courses (weeks and months instead of hours and days) which will inevitably reduce dose frequency, increase patient compliance and improve clinical outcomes. Novel applications and design of contact lenses and intracanalicular delivery devices along with the move towards integrating gels into various drug delivery devices like intraocular pumps, injections and implants has the potential to reduce comorbidities caused by glaucoma, corneal keratopathy, cataract, diabetic retinopathies and age-related macular degeneration. This review describes ophthalmic gelling systems with emphasis on mechanism of gel formation and application in ophthalmology. It provides a critical appraisal of the techniques and methods used in the characterization of ophthalmic preformed gels and in situ gelling systems along with a thorough insight into the safety and biocompatibility of these systems. Newly developed ophthalmic gels, hydrogels, preformed gels and in situ gelling systems including the latest in the area of stimuli responsive gels, molecularly imprinted gels, nanogels, 3D printed hydrogels; 3D printed devices comprising ophthalmic gels are covered. Finally, new applications of gels in the production of artificial corneas, corneal wound healing and hydrogel contact lenses are described.
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Nguyen KN, Bobba S, Richardson A, Park M, Watson SL, Wakefield D, Di Girolamo N. Native and synthetic scaffolds for limbal epithelial stem cell transplantation. Acta Biomater 2018; 65:21-35. [PMID: 29107055 DOI: 10.1016/j.actbio.2017.10.037] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2017] [Revised: 10/22/2017] [Accepted: 10/25/2017] [Indexed: 12/13/2022]
Abstract
UNLABELLED Limbal stem cell deficiency (LSCD) is a complex blinding disease of the cornea, which cannot be treated with conventional corneal transplants. Instead, a stem cell (SC) graft is required to replenish the limbal epithelial stem cell (LESC) reservoir, which is ultimately responsible for regenerating the corneal epithelium. Current therapies utilize limbal tissue biopsies that harbor LESCs as well as tissue culture expanded cells. Typically, this tissue is placed on a scaffold that supports the formation of corneal epithelial cell sheets, which are then transferred to diseased eyes. A wide range of biological and synthetic materials have been identified as carrier substrates for LESC, some of which have been used in the clinic, including amniotic membrane, fibrin, and silicon hydrogel contact lenses, each with their own advantages and limitations. This review will provide a brief background of LSCD, focusing on bio-scaffolds that have been utilized in limbal stem cell transplantation (LSCT) and materials that are being developed as potentially novel therapeutics for patients with this disease. STATEMENT OF SIGNIFICANCE The outcome of patients with corneal blindness that receive stem cell grafts to restore eye health and correct vision varies considerably and may be due to the different biological and synthetic scaffolds used to deliver these cells to the ocular surface. This review will highlight the positive attributes and limitations of the myriad of carriers developed for clinical use as well as those that are being trialled in pre-clinical models. The overall focus is on developing a standardized therapy for patients, however due to the multiple causes of corneal blindness, a personal regenerative medicine approach may be the best option.
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Affiliation(s)
- Kim N Nguyen
- School of Medical Sciences, University of New South Wales, Sydney, Australia
| | - Samantha Bobba
- Prince of Wales Hospital Clinical School, Sydney, Australia
| | | | - Mijeong Park
- School of Medical Sciences, University of New South Wales, Sydney, Australia
| | | | - Denis Wakefield
- School of Medical Sciences, University of New South Wales, Sydney, Australia
| | - Nick Di Girolamo
- School of Medical Sciences, University of New South Wales, Sydney, Australia.
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Aslan B, Guler S, Tevlek A, Aydin HM. Evaluation of collagen foam, poly(l-lactic acid) nanofiber mesh, and decellularized matrices for corneal regeneration. J Biomed Mater Res B Appl Biomater 2017; 106:2157-2168. [DOI: 10.1002/jbm.b.34022] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Revised: 06/06/2017] [Accepted: 07/25/2017] [Indexed: 11/11/2022]
Affiliation(s)
- Bahar Aslan
- Institute of Science, Bioengineering Division; , Hacettepe University; Ankara Turkey
| | - Selcan Guler
- Institute of Science, Bioengineering Division; , Hacettepe University; Ankara Turkey
| | - Atakan Tevlek
- Institute of Science, Bioengineering Division; , Hacettepe University; Ankara Turkey
| | - Halil Murat Aydin
- Environmental Engineering Department and Bioengineering Division and Centre for Bioengineering; Hacettepe University; Ankara Turkey
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58
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Zidan G, Rupenthal ID, Greene C, Seyfoddin A. Medicated ocular bandages and corneal health: potential excipients and active pharmaceutical ingredients. Pharm Dev Technol 2017; 23:255-260. [DOI: 10.1080/10837450.2017.1377232] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Ghada Zidan
- Drug Delivery Research Group, School of Science, Auckland University of Technology, Auckland, New Zealand
| | - Ilva D. Rupenthal
- Buchanan Ocular Therapeutics Unit, Department of Ophthalmology, New Zealand National Eye Centre, University of Auckland, Auckland, New Zealand
- Department of Ophthalmology, New Zealand National Eye Centre, University of Auckland, Auckland, New Zealand
| | - Carol Greene
- Department of Ophthalmology, New Zealand National Eye Centre, University of Auckland, Auckland, New Zealand
| | - Ali Seyfoddin
- Drug Delivery Research Group, School of Science, Auckland University of Technology, Auckland, New Zealand
- School of Interprofessional Health Studies, Auckland University of Technology, Auckland, New Zealand
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Tissue Engineering in Ophthalmology: Implications for Eyelid Reconstruction. Ophthalmic Plast Reconstr Surg 2017; 33:157-162. [PMID: 27749619 DOI: 10.1097/iop.0000000000000792] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
PURPOSE Bioengineering aims to produce functional tissue replacements to repair defects and has been widely investigated over the past few decades. We aimed to review the available literature on the application of tissue engineering in ophthalmology, with a particular focus on ophthalmic plastic surgery and potential applications for eyelid reconstruction. METHODS A literature search was performed on the MEDLINE database using the keywords "bioengineering," "tissue engineering," and "ophthalmology." Articles written in English were included. RESULTS There is a substantial body of work on tissue engineering of the cornea. Other structures in ophthalmology investigated include the conjunctiva, lacrimal gland, and orbital bone. We also discuss the potential application of tissue engineering in eyelid reconstruction. CONCLUSION Tissue engineering represents the future of regenerative and reconstructive medicine, with significant potential applications in ophthalmic plastic surgery.
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Rizwan M, Peh GS, Ang HP, Lwin NC, Adnan K, Mehta JS, Tan WS, Yim EK. Sequentially-crosslinked bioactive hydrogels as nano-patterned substrates with customizable stiffness and degradation for corneal tissue engineering applications. Biomaterials 2017; 120:139-154. [DOI: 10.1016/j.biomaterials.2016.12.026] [Citation(s) in RCA: 147] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2016] [Revised: 12/06/2016] [Accepted: 12/22/2016] [Indexed: 11/25/2022]
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61
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Wang J, Tan J, Luo J, Huang P, Zhou W, Chen L, Long L, Zhang LM, Zhu B, Yang L, Deng DYB. Enhancement of scutellarin oral delivery efficacy by vitamin B12-modified amphiphilic chitosan derivatives to treat type II diabetes induced-retinopathy. J Nanobiotechnology 2017; 15:18. [PMID: 28249594 PMCID: PMC5333415 DOI: 10.1186/s12951-017-0251-z] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Accepted: 02/10/2017] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Diabetic retinopathy is the most common complication in diabetic patients relates to high expression of VEGF and microaneurysms. Scutellarin (Scu) turned out to be effective against diabetes related vascular endothelial cell dysfunction. However, its clinical applications have been limited by its low bioavailability. In this study, we formulated and characterized a novel intestinal target nanoparticle carrier based on amphiphilic chitosan derivatives (Chit-DC-VB12) loaded with scutellarin to enhance its bioavailability and then evaluated its therapeutic effect in experimental diabetic retinopathy model. RESULTS Chit-DC-VB12 nanoparticles showed low toxicity toward the human colon adenocarcinoma (Caco-2) cells and zebra fish within concentration of 250 μg/ml, owing to good biocompatibility of chitosan. The scutellarin-loaded Chit-DC-VB12 nanoparticles (Chit-DC-VB12-Scu) were then prepared by self-assembly in aqueous solution. Scanning electron microscopy and dynamic light scattering analysis indicated that the Chit-DC-VB12-Scu nanoparticles were spherical particles in the sizes ranging from 150 to 250 nm. The Chit-DC-VB12-Scu nanoparticles exhibited high permeation in Caco-2 cell, indicated it could be beneficial to be absorbed in humans. We also found that Chit-DC-VB12 nanoparticles had a high cellular uptake. Bioavailability studies were performed in Sprague-Dawley rats, which present the area under the curve of scutellarin of Chit-DC-VB12-Scu was two to threefolds greater than that of free scutellarin alone. Further to assess the therapeutic efficacy of diabetic retinopathy, we showed Chit-DC-VB12-Scu down-regulated central retinal artery resistivity index and the expression of angiogenesis proteins (VEGF, VEGFR2, and vWF) of retinas in type II diabetic rats. CONCLUSIONS Chit-DC-VB12 nanoparticles loaded with scutellarin have better bioavailability and cellular uptake efficiency than Scu, while Chit-DC-VB12-Scu nanoparticles alleviated the structural disorder of intraretinal neovessels in the retina induced by diabetes, and it also inhibited the retinal neovascularization via down-regulated the expression of angiogenesis proteins. In conclusion, the Chit-DC-VB12 nanoparticles enhanced scutellarin oral delivery efficacy and exhibited potential as small intestinal target promising nano-carriers for treatment of type II diabetes induced-retinopathy.
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Affiliation(s)
- Jingnan Wang
- Research Center of Translational Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, China
| | - Jiayun Tan
- Department of Polymer and Material Science, School of Chemistry, Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, Guangdong Provincial Key Laboratory for High Performance Polymer-based Composites, Sun Yat-sen University, Guangzhou, 510275, China
| | - Jiahao Luo
- Department of Polymer and Material Science, School of Chemistry, Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, Guangdong Provincial Key Laboratory for High Performance Polymer-based Composites, Sun Yat-sen University, Guangzhou, 510275, China
| | - Peilin Huang
- Institute of Biomaterial, Department of Applied Chemistry, College of Materials and Energy, South China Agricultural University, Guangzhou, 510642, China
| | - Wuyi Zhou
- Institute of Biomaterial, Department of Applied Chemistry, College of Materials and Energy, South China Agricultural University, Guangzhou, 510642, China
| | | | - Lingli Long
- Research Center of Translational Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, China
| | - Li-Ming Zhang
- Department of Polymer and Material Science, School of Chemistry, Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, Guangdong Provincial Key Laboratory for High Performance Polymer-based Composites, Sun Yat-sen University, Guangzhou, 510275, China
| | - Banghao Zhu
- Department of Pharmacology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080, China
| | - Liqun Yang
- Department of Polymer and Material Science, School of Chemistry, Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, Guangdong Provincial Key Laboratory for High Performance Polymer-based Composites, Sun Yat-sen University, Guangzhou, 510275, China.
| | - David Y B Deng
- Research Center of Translational Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, China. .,Guangdong Provincial Key Laboratory of Orthopedics and Traumatology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, China.
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Copper incorporated microporous chitosan-polyethylene glycol hydrogels loaded with naproxen for effective drug release and anti-infection wound dressing. Int J Biol Macromol 2017; 95:928-937. [DOI: 10.1016/j.ijbiomac.2016.10.080] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Revised: 10/03/2016] [Accepted: 10/24/2016] [Indexed: 11/18/2022]
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63
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Ghezzi CE, Marelli B, Omenetto FG, Funderburgh JL, Kaplan DL. 3D Functional Corneal Stromal Tissue Equivalent Based on Corneal Stromal Stem Cells and Multi-Layered Silk Film Architecture. PLoS One 2017; 12:e0169504. [PMID: 28099503 PMCID: PMC5242458 DOI: 10.1371/journal.pone.0169504] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Accepted: 12/19/2016] [Indexed: 12/13/2022] Open
Abstract
The worldwide need for human cornea equivalents continues to grow. Few clinical options are limited to allogenic and synthetic material replacements. We hypothesized that tissue engineered human cornea systems based on mechanically robust, patterned, porous, thin, optically clear silk protein films, in combination with human corneal stromal stem cells (hCSSCs), would generate 3D functional corneal stroma tissue equivalents, in comparison to previously developed 2D approaches. Silk film contact guidance was used to control the alignment and distribution of hCSSCs on RGD-treated single porous silk films, which were then stacked in an orthogonally, multi-layered architecture and cultured for 9 weeks. These systems were compared similar systems generated with human corneal fibroblasts (hCFs). Both cell types were viable and preferentially aligned along the biomaterial patterns for up to 9 weeks in culture. H&E histological sections showed that the systems seeded with the hCSSCs displayed ECM production throughout the entire thickness of the constructs. In addition, the ECM proteins tested positive for keratocyte-specific tissue markers, including keratan sulfate, lumican, and keratocan. The quantification of hCSSC gene expression of keratocyte-tissue markers, including keratocan, lumican, human aldehyde dehydrogenase 3A1 (ALDH3A1), prostaglandin D2 synthase (PTDGS), and pyruvate dehydrogenase kinase, isozyme 4 (PDK4), within the 3D tissue systems demonstrated upregulation when compared to 2D single silk films and to the systems generated with the hCFs. Furthermore, the production of ECM from the hCSSC seeded systems and subsequent remodeling of the initial matrix significantly improved cohesiveness and mechanical performance of the constructs, while maintaining transparency after 9 weeks.
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Affiliation(s)
- Chiara E. Ghezzi
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts, United States of America
| | - Benedetto Marelli
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts, United States of America
| | - Fiorenzo G. Omenetto
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts, United States of America
| | - James L. Funderburgh
- Department of Ophthalmology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States of America
| | - David L. Kaplan
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts, United States of America
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Vázquez N, Chacón M, Rodríguez-Barrientos CA, Merayo-Lloves J, Naveiras M, Baamonde B, Alfonso JF, Zambrano-Andazol I, Riestra AC, Meana Á. Human Bone Derived Collagen for the Development of an Artificial Corneal Endothelial Graft. In Vivo Results in a Rabbit Model. PLoS One 2016; 11:e0167578. [PMID: 27907157 PMCID: PMC5131948 DOI: 10.1371/journal.pone.0167578] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Accepted: 11/16/2016] [Indexed: 12/13/2022] Open
Abstract
Corneal keratoplasty (penetrating or lamellar) using cadaveric human tissue, is nowadays the main treatment for corneal endotelial dysfunctions. However, there is a worldwide shortage of donor corneas available for transplantation and about 53% of the world's population have no access to corneal transplantation. Generating a complete cornea by tissue engineering is still a tough goal, but an endothelial lamellar graft might be an easier task. In this study, we developed a tissue engineered corneal endothelium by culturing human corneal endothelial cells on a human purified type I collagen membrane. Human corneal endothelial cells were cultured from corneal rims after corneal penetrating keratoplasty and type I collagen was isolated from remnant cancellous bone chips. Isolated type I collagen was analyzed by western blot, liquid chromatography -mass spectrometry and quantified using the exponentially modified protein abundance index. Later on, collagen solution was casted at room temperature obtaining an optically transparent and mechanically manageable membrane that supports the growth of human and rabbit corneal endothelial cells which expressed characteristic markers of corneal endothelium: zonula ocluddens-1 and Na+/K+ ATPase. To evaluate the therapeutic efficiency of our artificial endothelial grafts, human purified type I collagen membranes cultured with rabbit corneal endothelial cells were transplanted in New Zealand white rabbits that were kept under a minimal immunosuppression regimen. Transplanted corneas maintained transparency for as long as 6 weeks without obvious edema or immune rejection and maintaining the same endothelial markers that in a healthy cornea. In conclusion, it is possible to develop an artificial human corneal endothelial graft using remnant tissues that are not employed in transplant procedures. This artificial endothelial graft can restore the integrality of corneal endothelium in an experimental model of endothelial dysfunction. This strategy could supply extra endothelial tissue and compensate the deficit of cadaveric grafts for corneal endothelial transplantation.
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Affiliation(s)
- Natalia Vázquez
- Instituto Universitario Fernández-Vega. Universidad de Oviedo (Spain)
| | - Manuel Chacón
- Instituto Universitario Fernández-Vega. Universidad de Oviedo (Spain)
| | | | | | - Miguel Naveiras
- Instituto Universitario Fernández-Vega. Universidad de Oviedo (Spain)
| | - Begoña Baamonde
- Instituto Universitario Fernández-Vega. Universidad de Oviedo (Spain)
- Hospital Universitario Central de Asturias (Spain)
| | - Jose F. Alfonso
- Instituto Universitario Fernández-Vega. Universidad de Oviedo (Spain)
| | | | - Ana C. Riestra
- Instituto Universitario Fernández-Vega. Universidad de Oviedo (Spain)
| | - Álvaro Meana
- Instituto Universitario Fernández-Vega. Universidad de Oviedo (Spain)
- CIBER on rare disease–CIBERer. Instituto de Investigaciones Sanitarias de la Fundación Jiménez Díaz–IIS-FJD (Spain)
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65
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Palchesko RN, Funderburgh JL, Feinberg AW. Engineered Basement Membranes for Regenerating the Corneal Endothelium. Adv Healthc Mater 2016; 5:2942-2950. [PMID: 27723276 PMCID: PMC5354171 DOI: 10.1002/adhm.201600488] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Revised: 07/29/2016] [Indexed: 12/13/2022]
Abstract
Basement membranes are protein-rich extracellular matrices (ECM) that are essential for epithelial and endothelial tissue structure and function. Aging and disease cause changes in the physical properties and ECM composition of basement membranes, which has spurred research to develop methods to repair and/or regenerate these tissues. An area of critical clinical need is the cornea, where failure of the endothelium leads to stromal edema and vision loss. Here, an engineered basement membrane (EBM) is developed that consists of a dense layer of collagen IV and/or laminin ≈5-10 nm thick, created using surface-initiated assembly, conformally attached to a collagen I film. These EBMs are used to engineer a corneal endothelium (CE) that mimics the structure of Descemet's membrane with a thin stromal layer, toward use as a graft for lamellar keratoplasty. Results show that bovine and human CE cells form confluent monolayers on the EBM, express ZO-1 at the cell-cell borders, and achieve a density of ≈1600 cells mm-2 for 28 and 14 d, respectively. These results demonstrate that the technique is capable of fabricating EBMs with structural and compositional properties that mimic native basement membranes and that EBM may be a suitable carrier for engineering transplant quality CE grafts.
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Affiliation(s)
- Rachelle N Palchesko
- Department of Biomedical Engineering, Carnegie Mellon University, Pittsburgh, PA 15213, USA
- Louis J. Fox Center for Vision Restoration, Pittsburgh PA 15213, USA
| | - James L Funderburgh
- Department of Ophthalmology, University of Pittsburgh, Pittsburgh PA, 15213, USA
- Louis J. Fox Center for Vision Restoration, Pittsburgh PA 15213, USA
| | - Adam W Feinberg
- Department of Biomedical Engineering, Carnegie Mellon University, Pittsburgh, PA 15213, USA
- Louis J. Fox Center for Vision Restoration, Pittsburgh PA 15213, USA
- Department of Materials Science and Engineering, Carnegie Mellon University, Pittsburgh PA 15213, USA
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66
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Mishra SK, Raveendran S, Ferreira JMF, Kannan S. In Situ Impregnation of Silver Nanoclusters in Microporous Chitosan-PEG Membranes as an Antibacterial and Drug Delivery Percutaneous Device. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:10305-10316. [PMID: 27685160 DOI: 10.1021/acs.langmuir.6b02844] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
An in situ synthesis method for preparing silver nanoclusters (AgNCs) embedded in chitosan-polyethylene glycol (CS-PEG) membranes is disclosed. The aim is to develop implantable multifunctional devices for biofilm inhibition and drug release to reduce percutaneous device related complications (PDRCs). A multiple array of characterization techniques confirmed the formation of fluorescent AgNCs with sizes of ∼3 nm uniformly distributed in CS-PEG matrix and their active role in determining the fraction and interconnectivity of the microporous membranes. The presence and increasing contents of AgNCs enhanced the mechanical stability of membranes and decreased their susceptibility to degradation in the presence of lysozyme and H2O2. Moreover, the presence and increasing concentrations of AgNCs hindered biofilm formation against Escherichia coli (Gram negative) and Staphylococcus aureus (Gram positive) and enabled a sustainable release of an anti-inflammatory drug naproxen in vitro until 24 h. The overall results gathered and reported in this work make the AgNCs impregnated CS-PEG membranes highly promising multifunctional devices combining efficient antibacterial activity and biocompatibility with active local drug delivery.
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Affiliation(s)
- Sandeep K Mishra
- Centre for Nanoscience and Technology, Pondicherry University , Puducherry-605 014, India
| | - Subina Raveendran
- Centre for Nanoscience and Technology, Pondicherry University , Puducherry-605 014, India
| | - J M F Ferreira
- Department of Materials and Ceramics Engineering, University of Aveiro, CICECO , Aveiro 3810 193, Portugal
| | - S Kannan
- Centre for Nanoscience and Technology, Pondicherry University , Puducherry-605 014, India
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67
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Kishore V, Iyer R, Frandsen A, Nguyen TU. In vitro characterization of electrochemically compacted collagen matrices for corneal applications. ACTA ACUST UNITED AC 2016; 11:055008. [PMID: 27710923 DOI: 10.1088/1748-6041/11/5/055008] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Loss of vision due to corneal disease is a significant problem worldwide. Transplantation of donor corneas is a viable treatment option but limitations such as short supply and immune-related complications call for alternative options for the treatment of corneal disease. A tissue engineering-based approach using a collagen scaffold is a promising alternative to develop a bioengineered cornea that mimics the functionality of native cornea. In this study, an electrochemical compaction method was employed to synthesize highly dense and transparent collagen matrices. We hypothesized that chemical crosslinking of electrochemically compacted collagen (ECC) matrices will maintain transparency, improve stability, and enhance the mechanical properties of the matrices to the level of native cornea. Further, we hypothesized that keratocyte cell viability and proliferation will be maintained on crosslinked ECC matrices. The results indicated that uncrosslinked and 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide-N-hydroxysuccinimide (EDC-NHS) crosslinked ECC matrices were highly transparent with light transmission measurements comparable to native cornea. Stability tests showed that while the uncrosslinked ECC matrices degraded within 6 h when treated with collagenase, EDC-NHS or genipin crosslinking significantly improved the stability of ECC matrices (192 h for EDC-NHS and 256 h for genipin). Results from the mechanical tests showed that both EDC-NHS and genipin crosslinking significantly improved the strength and modulus of ECC matrices. Cell culture studies showed that keratocyte cell viability and proliferation are maintained on EDC-NHS crosslinked ECC matrices. Overall, results from this study suggest that ECC matrices have the potential to be developed as a functional biomaterial for corneal repair and regeneration.
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Affiliation(s)
- Vipuil Kishore
- Department of Chemical Engineering, Florida Institute of Technology, Melbourne, FL 32901, USA. Department of Biomedical Engineering, Florida Institute of Technology, Melbourne, FL 32901, USA. Author to whom any correspondence should be addressed. Department of Chemical Engineering, Florida Institute of Technology, 150 W. University Blvd, Melbourne, FL 32901, USA
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68
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Kumar P, Pandit A, Zeugolis DI. Progress in Corneal Stromal Repair: From Tissue Grafts and Biomaterials to Modular Supramolecular Tissue-Like Assemblies. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2016; 28:5381-5399. [PMID: 27028373 DOI: 10.1002/adma.201503986] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2015] [Revised: 12/31/2015] [Indexed: 06/05/2023]
Abstract
Corneal injuries and degenerative conditions have major socioeconomic consequences, given that in most cases, they result in blindness. In the quest of the ideal therapy, tissue grafts, biomaterials, and modular engineering approaches are under intense investigation. Herein, advancements and shortfalls are reviewed and future perspectives for these therapeutic strategies discussed.
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Affiliation(s)
- Pramod Kumar
- Regenerative, Modular & Developmental Engineering Laboratory (REMODEL), Biosciences Research Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
- Center for Research in Medical Devices (CÚRAM), Biosciences Research Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
| | - Abhay Pandit
- Center for Research in Medical Devices (CÚRAM), Biosciences Research Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
| | - Dimitrios I Zeugolis
- Regenerative, Modular & Developmental Engineering Laboratory (REMODEL), Biosciences Research Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
- Center for Research in Medical Devices (CÚRAM), Biosciences Research Building, National University of Ireland Galway (NUI Galway), Galway, Ireland
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69
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Study of ionic charge dependent salt resistant swelling behavior and removal of colloidal particles using reduced gum rosin-poly(acrylamide)-based green flocculant. IRANIAN POLYMER JOURNAL 2016. [DOI: 10.1007/s13726-016-0427-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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70
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Hemalatha T, Yadav S, Krithiga G, Sastry TP. Chitosan as a matrix for grafting methyl methacrylate: synthesis, characterization and evaluation of grafts for biomedical applications. Polym Bull (Berl) 2016. [DOI: 10.1007/s00289-016-1644-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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71
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Zhang S, Chen H, Kong J. Disulfide bonds-containing amphiphilic conetworks with tunable reductive-cleavage. RSC Adv 2016. [DOI: 10.1039/c6ra02824a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The disulfide bonds-containing amphiphilic conetworks were presented with tunable reduction-cleavage via click reaction of azide terminated poly(ε-caprolactone) and alkyne-terminated polyethylene glycol.
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Affiliation(s)
- Shan Zhang
- Shaanxi Key Laboratory of Macromolecular Science and Technology
- School of Science
- Northwestern Polytechnical University
- Xi'an
- P. R. China
| | - Heng Chen
- Shaanxi Key Laboratory of Macromolecular Science and Technology
- School of Science
- Northwestern Polytechnical University
- Xi'an
- P. R. China
| | - Jie Kong
- Shaanxi Key Laboratory of Macromolecular Science and Technology
- School of Science
- Northwestern Polytechnical University
- Xi'an
- P. R. China
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72
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Fathi M, Barar J, Aghanejad A, Omidi Y. Hydrogels for ocular drug delivery and tissue engineering. BIOIMPACTS : BI 2015; 5:159-64. [PMID: 26929918 PMCID: PMC4769784 DOI: 10.15171/bi.2015.31] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Accepted: 12/22/2015] [Indexed: 12/31/2022]
Abstract
Hydrogels, as crosslinked polymeric three dimensional networks, possess unique structure and behavior in response to the internal and/or external stimuli. As a result, they offer great prospective applications in drug delivery, cell therapy and human tissue engineering. Here, we highlight the potential of hydrogels in prolonged intraocular drug delivery and ocular surface therapy using stem cells incorporated hydrogels.
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73
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Limbal Stem Cell Deficiency: Current Treatment Options and Emerging Therapies. Stem Cells Int 2015; 2016:9798374. [PMID: 26788074 PMCID: PMC4691643 DOI: 10.1155/2016/9798374] [Citation(s) in RCA: 91] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Accepted: 08/18/2015] [Indexed: 12/15/2022] Open
Abstract
Severe ocular surface disease can result in limbal stem cell deficiency (LSCD), a condition leading to decreased visual acuity, photophobia, and ocular pain. To restore the ocular surface in advanced stem cell deficient corneas, an autologous or allogenic limbal stem cell transplantation is performed. In recent years, the risk of secondary LSCD due to removal of large limbal grafts has been significantly reduced by the optimization of cultivated limbal epithelial transplantation (CLET). Despite the great successes of CLET, there still is room for improvement as overall success rate is 70% and visual acuity often remains suboptimal after successful transplantation. Simple limbal epithelial transplantation reports higher success rates but has not been performed in as many patients yet. This review focuses on limbal epithelial stem cells and the pathophysiology of LSCD. State-of-the-art therapeutic management of LSCD is described, and new and evolving techniques in ocular surface regeneration are being discussed, in particular, advantages and disadvantages of alternative cell scaffolds and cell sources for cell based ocular surface reconstruction.
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74
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Wang J, Hu H, Yang Z, Wei J, Li J. IPN hydrogel nanocomposites based on agarose and ZnO with antifouling and bactericidal properties. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 61:376-86. [PMID: 26838864 DOI: 10.1016/j.msec.2015.12.023] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2015] [Revised: 11/10/2015] [Accepted: 12/10/2015] [Indexed: 12/28/2022]
Abstract
Nanocomposite hydrogels with interpenetrating polymer network (IPN) structure based on poly(ethylene glycol) methyl ether methacrylate modified ZnO (ZnO-PEGMA) and 4-azidobenzoic agarose (AG-N3) were prepared by a one-pot strategy under UV irradiation. The hydrogels exhibited a highly macroporous spongelike structure, and the pore size decreased with the increase of the ZnO-PEGMA content. Due to the entanglement and favorable interactions between the two crosslinked networks, the IPN hydrogels exhibited excellent mechanical strength and light transmittance. The maximum compressive and tensile strengths of the IPN hydrogels reached 24.8 and 1.98 MPa respectively. The transparent IPN hydrogels transmitted more than 85% of visible light at all wavelengths (400-800 nm). The IPN hydrogels exhibited anti-adhesive property towards Gram-negative Escherichia coli (E. coli) and Gram-positive Staphylococcus aureus (S. aureus), and the bactericidal activity increased with the ZnO-PEGMA content. The incorporation of ZnO-PEGMA did not reduce the biocompatibility of the IPN hydrogels and all the IPN nanocomposites showed negligible cytotoxicity. The present study not only provided a facile method for preparing hydrogel nanocomposites with IPN structure but also developed a new hydrogel material which might be an excellent candidate for wound dressings.
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Affiliation(s)
- Jingjing Wang
- School of Materials Engineering, Key Laboratory for Ecological-Environment Materials of Jiangsu Province, Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province, Yancheng Institute of Technology, Yancheng 224051, China.
| | - Hongkai Hu
- School of Materials Engineering, Key Laboratory for Ecological-Environment Materials of Jiangsu Province, Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province, Yancheng Institute of Technology, Yancheng 224051, China
| | - Zhonglin Yang
- School of Materials Engineering, Key Laboratory for Ecological-Environment Materials of Jiangsu Province, Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province, Yancheng Institute of Technology, Yancheng 224051, China
| | - Jun Wei
- School of Materials Engineering, Key Laboratory for Ecological-Environment Materials of Jiangsu Province, Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province, Yancheng Institute of Technology, Yancheng 224051, China
| | - Juan Li
- School of Materials Engineering, Key Laboratory for Ecological-Environment Materials of Jiangsu Province, Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province, Yancheng Institute of Technology, Yancheng 224051, China
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75
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Hydrogels in ophthalmic applications. Eur J Pharm Biopharm 2015; 95:227-38. [DOI: 10.1016/j.ejpb.2015.05.016] [Citation(s) in RCA: 130] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Revised: 05/05/2015] [Accepted: 05/21/2015] [Indexed: 12/20/2022]
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76
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Lai JY, Cheng HY, Ma DHK. Investigation of Overrun-Processed Porous Hyaluronic Acid Carriers in Corneal Endothelial Tissue Engineering. PLoS One 2015; 10:e0136067. [PMID: 26296087 PMCID: PMC4546624 DOI: 10.1371/journal.pone.0136067] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2015] [Accepted: 07/29/2015] [Indexed: 11/19/2022] Open
Abstract
Hyaluronic acid (HA) is a linear polysaccharide naturally found in the eye and therefore is one of the most promising biomaterials for corneal endothelial regenerative medicine. This study reports, for the first time, the development of overrun-processed porous HA hydrogels for corneal endothelial cell (CEC) sheet transplantation and tissue engineering applications. The hydrogel carriers were characterized to examine their structures and functions. Evaluations of carbodiimide cross-linked air-dried and freeze-dried HA samples were conducted simultaneously for comparison. The results indicated that during the fabrication of freeze-dried HA discs, a technique of introducing gas bubbles in the aqueous biopolymer solutions can be used to enlarge pore structure and prevent dense surface skin formation. Among all the groups studied, the overrun-processed porous HA carriers show the greatest biological stability, the highest freezable water content and glucose permeability, and the minimized adverse effects on ionic pump function of rabbit CECs. After transfer and attachment of bioengineered CEC sheets to the overrun-processed HA hydrogel carriers, the therapeutic efficacy of cell/biopolymer constructs was tested using a rabbit model with corneal endothelial dysfunction. Clinical observations including slit-lamp biomicroscopy, specular microscopy, and corneal thickness measurements showed that the construct implants can regenerate corneal endothelium and restore corneal transparency at 4 weeks postoperatively. Our findings suggest that cell sheet transplantation using overrun-processed porous HA hydrogels offers a new way to reconstruct the posterior corneal surface and improve endothelial tissue function.
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Affiliation(s)
- Jui-Yang Lai
- Institute of Biochemical and Biomedical Engineering, Chang Gung University, Taoyuan, Taiwan, 33302, Republic of China
- Biomedical Engineering Research Center, Chang Gung University, Taoyuan, Taiwan, 33302, Republic of China
- Molecular Medicine Research Center, Chang Gung University, Taoyuan, Taiwan, 33302, Republic of China
- * E-mail:
| | - Hsiao-Yun Cheng
- Molecular Medicine Research Center, Chang Gung University, Taoyuan, Taiwan, 33302, Republic of China
| | - David Hui-Kang Ma
- Limbal Stem Cell Laboratory, Department of Ophthalmology, Chang Gung Memorial Hospital, Taoyuan, Taiwan, 33305, Republic of China
- Department of Chinese Medicine, Chang Gung University, Taoyuan, Taiwan, 33302, Republic of China
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77
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Ahearne M, Lynch AP. Early Observation of Extracellular Matrix-Derived Hydrogels for Corneal Stroma Regeneration. Tissue Eng Part C Methods 2015; 21:1059-69. [PMID: 25951055 DOI: 10.1089/ten.tec.2015.0008] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
A lack of healthy transplantable tissue to treat corneal blindness has led researchers to investigate the development and application of different scaffold materials for corneal tissue engineering and regeneration. In this study, hydrogels fabricated from decellularized corneal extracellular matrix were developed as a new approach to corneal stromal tissue regeneration. Porcine corneas were decellularized using a technique that combined freeze-thaw cycles with a nuclease treatment. The corneas were then freeze-dried, milled, and digested in an acidic pepsin solution that was used to form a hydrogel after adjusting the pH and gelation temperature. The resultant corneal matrix hydrogels (CMHs) were seeded with human corneal stromal cells and cultured for several days. When compared to collagens hydrogels, CMHs had superior optical transparency, similar mechanical properties, and were better able to retain the stromal cells native keratocyte phenotype. The CMHs also supported cell viability and proliferation and contained sulfated glycosaminoglycan, a vital constituent, for maintaining corneal transparency. These results suggest that the CMHs could provide an exceptional biomaterial for corneal stroma regeneration.
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Affiliation(s)
- Mark Ahearne
- 1 Trinity Centre for Bioengineering, Trinity Biomedical Sciences Institute , Trinity College Dublin, Dublin, Ireland .,2 Department of Mechanical and Manufacturing Engineering, School of Engineering, Trinity College Dublin , Dublin, Ireland
| | - Amy P Lynch
- 1 Trinity Centre for Bioengineering, Trinity Biomedical Sciences Institute , Trinity College Dublin, Dublin, Ireland .,2 Department of Mechanical and Manufacturing Engineering, School of Engineering, Trinity College Dublin , Dublin, Ireland
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78
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Chen H, Jia J, Duan X, Yang Z, Kong J. Reduction-cleavable hyperbranched polymers with limited intramolecular cyclization via click chemistry. ACTA ACUST UNITED AC 2015. [DOI: 10.1002/pola.27694] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Heng Chen
- MOE Key Laboratory of Space Applied Physics and Chemistry, Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Science; Northwestern Polytechnical University; Xi'an 710072 People's Republic of China
| | - Jiqiong Jia
- MOE Key Laboratory of Space Applied Physics and Chemistry, Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Science; Northwestern Polytechnical University; Xi'an 710072 People's Republic of China
| | - Xiao Duan
- MOE Key Laboratory of Space Applied Physics and Chemistry, Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Science; Northwestern Polytechnical University; Xi'an 710072 People's Republic of China
| | - Zhen Yang
- MOE Key Laboratory of Space Applied Physics and Chemistry, Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Science; Northwestern Polytechnical University; Xi'an 710072 People's Republic of China
| | - Jie Kong
- MOE Key Laboratory of Space Applied Physics and Chemistry, Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Science; Northwestern Polytechnical University; Xi'an 710072 People's Republic of China
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79
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Stoppel WL, Ghezzi CE, McNamara SL, Black LD, Kaplan DL. Clinical applications of naturally derived biopolymer-based scaffolds for regenerative medicine. Ann Biomed Eng 2015; 43:657-80. [PMID: 25537688 PMCID: PMC8196399 DOI: 10.1007/s10439-014-1206-2] [Citation(s) in RCA: 91] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2014] [Accepted: 11/26/2014] [Indexed: 01/05/2023]
Abstract
Naturally derived polymeric biomaterials, such as collagens, silks, elastins, alginates, and fibrins are utilized in tissue engineering due to their biocompatibility, bioactivity, and tunable mechanical and degradation kinetics. The use of these natural biopolymers in biomedical applications is advantageous because they do not release cytotoxic degradation products, are often processed using environmentally-friendly aqueous-based methods, and their degradation rates within biological systems can be manipulated by modifying the starting formulation or processing conditions. For these reasons, many recent in vivo investigations and FDA-approval of new biomaterials for clinical use have utilized natural biopolymers as matrices for cell delivery and as scaffolds for cell-free support of native tissues. This review highlights biopolymer-based scaffolds used in clinical applications for the regeneration and repair of native tissues, with a focus on bone, skeletal muscle, peripheral nerve, cardiac muscle, and cornea substitutes.
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Affiliation(s)
- Whitney L. Stoppel
- Department of Biomedical Engineering, Tufts University, Medford, MA 02155, USA
| | - Chiara E. Ghezzi
- Department of Biomedical Engineering, Tufts University, Medford, MA 02155, USA
| | - Stephanie L. McNamara
- Department of Biomedical Engineering, Tufts University, Medford, MA 02155, USA
- Cellular, Molecular and Developmental Biology Program, Sackler School of Graduate Biomedical Sciences, Tufts University School of Medicine, Boston, MA 02111, USA
- The Harvard/MIT MD-PhD Program, Harvard Medical School, Boston, MA 02115, USA
| | - Lauren D. Black
- Department of Biomedical Engineering, Tufts University, Medford, MA 02155, USA
- Cellular, Molecular and Developmental Biology Program, Sackler School of Graduate Biomedical Sciences, Tufts University School of Medicine, Boston, MA 02111, USA
| | - David L. Kaplan
- Department of Biomedical Engineering, Tufts University, Medford, MA 02155, USA
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80
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Ghezzi CE, Rnjak-Kovacina J, Kaplan DL. Corneal tissue engineering: recent advances and future perspectives. TISSUE ENGINEERING PART B-REVIEWS 2015; 21:278-87. [PMID: 25434371 DOI: 10.1089/ten.teb.2014.0397] [Citation(s) in RCA: 116] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
To address the growing need for corneal transplants two main approaches are being pursued: allogenic and synthetic materials. Allogenic tissue from human donors is currently the preferred choice; however, there is a worldwide shortage in donated corneal tissue. In addition, tissue rejection often limits the long-term success of this approach. Alternatively, synthetic homologs to donor corneal grafts are primarily considered temporary replacements until suitable donor tissue becomes available, as they result in a high incidence of graft failure. Tissue engineered cornea analogs would provide effective cornea tissue substitutes and alternatives to address the need to reduce animal testing of commercial products. Recent progress toward these needs is reviewed here, along with future perspectives.
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Affiliation(s)
- Chiara E Ghezzi
- 1Department of Biomedical Engineering, Tufts University, Medford, Massachusetts
| | - Jelena Rnjak-Kovacina
- 1Department of Biomedical Engineering, Tufts University, Medford, Massachusetts.,2Graduate School of Biomedical Engineering, UNSW Australia, Sydney, Australia
| | - David L Kaplan
- 1Department of Biomedical Engineering, Tufts University, Medford, Massachusetts
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81
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Zhang C, Wen J, Yan J, Kao Y, Ni Z, Cui X, Wang H. In situ growth induction of the corneal stroma cells using uniaxially aligned composite fibrous scaffolds. RSC Adv 2015. [DOI: 10.1039/c4ra16609d] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
An electrospun fibrous scaffold was fabricated and used in the in situ remediation of rabbits’ corneal stromata.
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Affiliation(s)
- Cong Zhang
- College of Chemistry
- Jilin University
- Changchun 130012
- P. R. China
| | - Jihong Wen
- Department of Jilin University
- First Clinical Hospital of Bethune Medical
- Changchun 130012
- P. R. China
| | - Jing Yan
- Department of Chemistry and Biochemistry Nanocenter
- University of South Carolina
- Columbia
- USA
| | - Yanbing Kao
- Clinic College of Medicine
- Jilin University
- Changchun 130012
- P. R. China
| | - Zhiqiang Ni
- Department of Tumor Biological Therapy Jilin Province People’s Hospital
- Changchun 130012
- P. R. China
| | - Xuejun Cui
- College of Chemistry
- Jilin University
- Changchun 130012
- P. R. China
| | - Hongyan Wang
- College of Chemistry
- Jilin University
- Changchun 130012
- P. R. China
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82
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Grolik M, Szczubiałka K, Wowra B, Dobrowolski D, Orzechowska-Wylęgała B, Wylęgała E, Nowakowska M. Corneal Epithelial Scaffolds Based on Chitosan Membranes Containing Collagen and Keratin. INT J POLYM MATER PO 2014. [DOI: 10.1080/00914037.2014.909425] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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83
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Li W, Long Y, Liu Y, Long K, Liu S, Wang Z, Wang Y, Ren L. Fabrication and characterization of chitosan-collagen crosslinked membranes for corneal tissue engineering. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2014; 25:1962-72. [PMID: 25299624 DOI: 10.1080/09205063.2014.965996] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
This article describes a chitosan-collagen composite membrane as corneal tissue-engineering biomaterials. The membrane was prepared by dissolving the chitosan into collagen with the weight ratio of 0, 15, 30, 45, 60, and 100%, followed by crosslinked with 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide. Mechanical properties, contact angles, and optical transmittance were determined and compared between chitosan membrane and crosslinking composite membrane. As a result, the optical transparency and mechanical strength of the chitosan-collagen membranes were significantly better than that of the sample of chitosan. In addition, in vitro cell culture studies revealed that the collagen has no negative effect on the cell morphology, viability, and proliferation and possess good biocompatibility. Overall, the dendrimer crosslinked chitosan-collagen composite membranes showed promising properties that suggest that these might be suitable biomaterials for corneal tissue-engineering applications.
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Affiliation(s)
- Weichang Li
- a School of Materials Science and Engineering , South China University of Technology , Guangzhou 510641 , P.R. China
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84
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Serial explant culture provides novel insights into the potential location and phenotype of corneal endothelial progenitor cells. Exp Eye Res 2014; 127:9-13. [DOI: 10.1016/j.exer.2014.07.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2014] [Revised: 06/26/2014] [Accepted: 07/04/2014] [Indexed: 12/13/2022]
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85
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Ozcelik B, Brown KD, Blencowe A, Ladewig K, Stevens GW, Scheerlinck JPY, Abberton K, Daniell M, Qiao GG. Biodegradable and biocompatible poly(ethylene glycol)-based hydrogel films for the regeneration of corneal endothelium. Adv Healthc Mater 2014; 3:1496-507. [PMID: 24652807 DOI: 10.1002/adhm.201400045] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2014] [Indexed: 12/16/2022]
Abstract
Corneal endothelial cells (CECs) are responsible for maintaining the transparency of the human cornea. Loss of CECs results in blindness, requiring corneal transplantation. In this study, fabrication of biocompatible and biodegradable poly(ethylene glycol) (PEG)-based hydrogel films (PHFs) for the regeneration and transplantation of CECs is described. The 50-μm thin hydrogel films have similar or greater tensile strengths to human corneal tissue. Light transmission studies reveal that the films are >98% optically transparent, while in vitro degradation studies demonstrate their biodegradation characteristics. Cell culture studies demonstrate the regeneration of sheep corneal endothelium on the PHFs. Although sheep CECs do not regenerate in vivo, these cells proliferate on the films with natural morphology and become 100% confluent within 7 d. Implantation of the PHFs into live sheep corneas demonstrates the robustness of the films for surgical purposes. Regular slit lamp examinations and histology of the cornea after 28 d following surgery reveal minimal inflammatory responses and no toxicity, indicating that the films are benign. The results of this study suggest that PHFs are excellent candidates as platforms for the regeneration and transplantation of CECs as a result of their favorable biocompatibility, degradability, mechanical, and optical properties.
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Affiliation(s)
- Berkay Ozcelik
- Department of Chemical and Biomolecular Engineering; The University of Melbourne; Victoria 3010 Australia
| | - Karl D. Brown
- Centre for Eye Research Australia (CERA); Royal Victorian Eye & Ear Hospital, Peter Howson Wing; Victoria 3002 Australia
| | - Anton Blencowe
- Department of Chemical and Biomolecular Engineering; The University of Melbourne; Victoria 3010 Australia
| | - Katharina Ladewig
- Department of Chemical and Biomolecular Engineering; The University of Melbourne; Victoria 3010 Australia
| | - Geoffrey W. Stevens
- Department of Chemical and Biomolecular Engineering; The University of Melbourne; Victoria 3010 Australia
| | | | - Keren Abberton
- O'Brien Institute; Fitzroy St, Fitzroy Victoria 3065 Australia
- Faculty of Health Sciences, Australian Catholic University; Melbourne Australia
- Department of Surgery; St. Vincent's Hospital; Fitzroy St Fitzroy Victoria 3065 Australia
| | - Mark Daniell
- Centre for Eye Research Australia (CERA); Royal Victorian Eye & Ear Hospital, Peter Howson Wing; Victoria 3002 Australia
| | - Greg G. Qiao
- Department of Chemical and Biomolecular Engineering; The University of Melbourne; Victoria 3010 Australia
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86
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Mikulska A, Filipowska J, Osyczka AM, Szuwarzyński M, Nowakowska M, Szczubiałka K. Photocrosslinked ultrathin anionic polysaccharide supports for accelerated growth of human mesenchymal stem cells. Cell Prolif 2014; 47:516-26. [PMID: 24961895 DOI: 10.1111/cpr.12118] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2014] [Accepted: 04/30/2014] [Indexed: 01/02/2023] Open
Abstract
OBJECTIVES Properties of cell culture supports obtained from ultrathin multilayer films containing anionic natural polysaccharides (PSacs) and a synthetic polycation were studied. MATERIALS AND METHODS Supports were prepared via a layer-by-layer (LbL) self-assembly deposition method. Polymers used were: heparin (Hep), chondroitin sulphate (CS), hyaluronic acid (HA), and ι-carrageenan (Car) as polyanions, and diazoresin (DR) as a polycation. PSac layers were crosslinked with DR layers by irradiation with UV light absorbed by DR resin. RESULTS DR/PSac films are very efficient cell culture growth supports as found from experiments with human mesenchymal stem cells (hMSCs). Irradiation of the films resulted in changing zeta potential of outermost layers of both DR and PSac to more negative values, and in increased film hydrophobicity, as found from the contact angle measurements. Photocrosslinking of the supports led to their increased stability. CONCLUSIONS The supports allow for obtaining intact cell monolayers faster than when typical polystyrene tissue culture plates are used. Moreover, these monolayers spontaneously detach permitting formation of new cell layers on these surfaces relatively early during culture, compared to cells cultured on commonly used tissue culture plastic.
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Affiliation(s)
- A Mikulska
- Faculty of Chemistry, Jagiellonian University, 30-387, Kraków, Poland
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87
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Kim EY, Song JE, Park CH, Joo CK, Khang G. Recent advances in tissue-engineered corneal regeneration. Inflamm Regen 2014. [DOI: 10.2492/inflammregen.34.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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88
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Vashist A, Vashist A, Gupta YK, Ahmad S. Recent advances in hydrogel based drug delivery systems for the human body. J Mater Chem B 2014; 2:147-166. [DOI: 10.1039/c3tb21016b] [Citation(s) in RCA: 320] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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89
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Du H, Zha G, Gao L, Wang H, Li X, Shen Z, Zhu W. Fully biodegradable antibacterial hydrogels via thiol–ene “click” chemistry. Polym Chem 2014. [DOI: 10.1039/c4py00030g] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Novel biodegradable antimicrobial hydrogels, which are promising for use as biomaterials, were prepared facilely via a thiol–ene “click” reaction under human physiological conditions using multifunctional poly(ethylene glycol) (PEG) derivatives as precursors.
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Affiliation(s)
- Hong Du
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027, People's Republic of China
| | - Guangyu Zha
- Department of Oral and Maxillofacial Surgery
- Affiliated Stomatology Hospital
- School of Medicine
- Zhejiang University
- Hangzhou 310006, China
| | - Lilong Gao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027, People's Republic of China
| | - Huan Wang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027, People's Republic of China
| | - Xiaodong Li
- Department of Oral and Maxillofacial Surgery
- Affiliated Stomatology Hospital
- School of Medicine
- Zhejiang University
- Hangzhou 310006, China
| | - Zhiquan Shen
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027, People's Republic of China
| | - Weipu Zhu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization
- Department of Polymer Science and Engineering
- Zhejiang University
- Hangzhou 310027, People's Republic of China
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90
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Wei Z, Yang JH, Du XJ, Xu F, Zrinyi M, Osada Y, Li F, Chen YM. Dextran-Based Self-Healing Hydrogels Formed by Reversible Diels-Alder Reaction under Physiological Conditions. Macromol Rapid Commun 2013; 34:1464-70. [DOI: 10.1002/marc.201300494] [Citation(s) in RCA: 146] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2013] [Revised: 07/17/2013] [Indexed: 11/09/2022]
Affiliation(s)
- Zhao Wei
- Department of Chemistry, School of Science, MOE Key Laboratory for Non-Equilibrium Synthesis and Modulation of Condensed Matter; Xi'an Jiaotong University; Xi'an 710049 P.R. China
- Bioinspired Engineering and Biomechanics Center; Xi'an Jiaotong University; Xi'an 710049 P.R. China
| | - Jian Hai Yang
- Department of Chemistry, School of Science, MOE Key Laboratory for Non-Equilibrium Synthesis and Modulation of Condensed Matter; Xi'an Jiaotong University; Xi'an 710049 P.R. China
- Bioinspired Engineering and Biomechanics Center; Xi'an Jiaotong University; Xi'an 710049 P.R. China
| | - Xiao Jing Du
- Department of Chemistry, School of Science, MOE Key Laboratory for Non-Equilibrium Synthesis and Modulation of Condensed Matter; Xi'an Jiaotong University; Xi'an 710049 P.R. China
- Bioinspired Engineering and Biomechanics Center; Xi'an Jiaotong University; Xi'an 710049 P.R. China
| | - Feng Xu
- Bioinspired Engineering and Biomechanics Center; Xi'an Jiaotong University; Xi'an 710049 P.R. China
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology; Xi'an Jiaotong University; Xi'an 710049 P.R. China
| | - Miklos Zrinyi
- Laboratory of Nanochemistry, Department of Biophysics and Radiation Biology; Semmelweis University; H-1084 Budapest Nagyvárad tér 4 Hungary
| | | | - Fei Li
- Department of Chemistry, School of Science, MOE Key Laboratory for Non-Equilibrium Synthesis and Modulation of Condensed Matter; Xi'an Jiaotong University; Xi'an 710049 P.R. China
- Bioinspired Engineering and Biomechanics Center; Xi'an Jiaotong University; Xi'an 710049 P.R. China
| | - Yong Mei Chen
- Department of Chemistry, School of Science, MOE Key Laboratory for Non-Equilibrium Synthesis and Modulation of Condensed Matter; Xi'an Jiaotong University; Xi'an 710049 P.R. China
- Bioinspired Engineering and Biomechanics Center; Xi'an Jiaotong University; Xi'an 710049 P.R. China
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