1
|
Abbasi N, O'Neill H. Cytocompatibility of electrospun poly-L-lactic acid membranes for Bruch's membrane regeneration using human embryonic stem cell-derived retinal pigment epithelial cells. J Biomed Mater Res A 2024; 112:1902-1920. [PMID: 38726752 DOI: 10.1002/jbm.a.37736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 04/11/2024] [Accepted: 04/30/2024] [Indexed: 09/03/2024]
Abstract
Cell replacement therapy is under development for dry age-related macular degeneration (AMD). A thin membrane resembling the Bruch's membrane is required to form a cell-on-membrane construct with retinal pigment epithelial (RPE) cells. These cells have been differentiated from human embryonic stem cells (hESCs) in vitro. A carrier membrane is required for cell implantation, which is biocompatible for cell growth and has dimensions and physical properties resembling the Bruch's membrane. Here a nanofiber electrospun poly-L-lactic acid (PLLA) membrane is tested for capacity to support cell growth and maturation. The requirements for laminin coating of the membrane are identified here. A porous electrospun nanofibrous PLLA membrane of ∼50 nm fiber diameter was developed as a prototype support for functional RPE cells grown as a monolayer. The need for laminin coating applied to the membrane following treatment with poly-L-ornithine (PLO), was identified in terms of cell growth and survival. Test membranes were compared in terms of hydrophilicity after laminin coating, mechanical properties of surface roughness and Young's modulus, porosity and ability to promote the attachment and proliferation of hESC-RPE cells in culture for up to 8 weeks. Over this time, RPE cell proliferation, morphology, and marker and gene expression, were monitored. The functional capacity of cell monolayers was identified in terms of transepithelial electrical resistance (TEER), phagocytosis of cells, as well as expression of the cytokines, vascular endothelial growth factor (VEGF) and pigment epithelium-derived factor (PEDF). PLLA polymer fibers are naturally hydrophobic, so their hydrophilicity was improved by pretreatment with PLO for subsequent coating with the bioactive protein laminin. They were then assessed for amount of laminin adsorbed, contact angle and uniformity of coating using scanning electron microscopy (SEM). Pretreatment with 100% PLO gave the best result over 10% PLO treatment or no treatment prior to laminin adsorption with significantly greater surface stiffness and modulus. By 6 weeks after cell plating, the coated membranes could support a mature RPE monolayer showing a dense apical microvillus structure and pigmented 3D polygonal cell morphology. After 8 weeks, PLO (100%)-Lam coated membranes exhibited the highest cell number, cell proliferation, and RPE barrier function measured as TEER. RPE cells showed the higher levels of specific surface marker and gene expression. Microphthalmia-associated transcription factor expression was highly upregulated indicating maturation of cells. Functionality of cells was indicated by expression of VEGF and PEDF genes as well as phagocytic capacity. In conclusion, electrospun PLLA membranes coated with PLO-Lam have the physical and biological properties to support the distribution and migration of hESC-RPE cells throughout the whole structure. They represent a good membrane candidate for preparation of hESC-RPE cells as a monolayer for implantation into the subretinal space of AMD patients.
Collapse
Affiliation(s)
- Naghmeh Abbasi
- Clem Jones Centre for Regenerative Medicine, Faculty of Health Sciences & Medicine, Bond University, Gold Coast, Queensland, Australia
| | - Helen O'Neill
- Clem Jones Centre for Regenerative Medicine, Faculty of Health Sciences & Medicine, Bond University, Gold Coast, Queensland, Australia
| |
Collapse
|
2
|
Van Ombergen A, Chalupa-Gantner F, Chansoria P, Colosimo BM, Costantini M, Domingos M, Dufour A, De Maria C, Groll J, Jungst T, Levato R, Malda J, Margarita A, Marquette C, Ovsianikov A, Petiot E, Read S, Surdo L, Swieszkowski W, Vozzi G, Windisch J, Zenobi-Wong M, Gelinsky M. 3D Bioprinting in Microgravity: Opportunities, Challenges, and Possible Applications in Space. Adv Healthc Mater 2023; 12:e2300443. [PMID: 37353904 DOI: 10.1002/adhm.202300443] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 05/12/2023] [Indexed: 06/25/2023]
Abstract
3D bioprinting has developed tremendously in the last couple of years and enables the fabrication of simple, as well as complex, tissue models. The international space agencies have recognized the unique opportunities of these technologies for manufacturing cell and tissue models for basic research in space, in particular for investigating the effects of microgravity and cosmic radiation on different types of human tissues. In addition, bioprinting is capable of producing clinically applicable tissue grafts, and its implementation in space therefore can support the autonomous medical treatment options for astronauts in future long term and far-distant space missions. The article discusses opportunities but also challenges of operating different types of bioprinters under space conditions, mainly in microgravity. While some process steps, most of which involving the handling of liquids, are challenging under microgravity, this environment can help overcome problems such as cell sedimentation in low viscous bioinks. Hopefully, this publication will motivate more researchers to engage in the topic, with publicly available bioprinting opportunities becoming available at the International Space Station (ISS) in the imminent future.
Collapse
Affiliation(s)
- Angelique Van Ombergen
- SciSpacE Team, Directorate of Human and Robotic Exploration Programmes (HRE), European Space Agency (ESA), Keplerlaan 1, Noordwijk, 2201AG, The Netherlands
- ESA Topical Team on "3D Bioprinting of living tissue for utilization in space exploration and extraterrestrial human settlements", 01307, Dresden, Germany
| | - Franziska Chalupa-Gantner
- Research Group 3D Printing and Biofabrication, Institute of Materials Science and Technology, Austrian Cluster for Tissue Regeneration, TU Wien, Getreidemarkt 9/E308, Vienna, 1060, Austria
| | - Parth Chansoria
- Tissue Engineering + Biofabrication Laboratory, Department of Health Sciences and Technology, ETH Zurich Otto-Stern-Weg 7, Zürich, 8093, Switzerland
| | - Bianca Maria Colosimo
- ESA Topical Team on "3D Bioprinting of living tissue for utilization in space exploration and extraterrestrial human settlements", 01307, Dresden, Germany
- Department of Mechanical Engineering, Politecnico di Milano, Via La Masa 1, Milano, 20156, Italy
| | - Marco Costantini
- Institute of Physical Chemistry, Polish Academy of Sciences, Ul. Kasprzaka 44/52, Warsaw, 01-224, Poland
| | - Marco Domingos
- ESA Topical Team on "3D Bioprinting of living tissue for utilization in space exploration and extraterrestrial human settlements", 01307, Dresden, Germany
- Department of Mechanical, Aerospace and Civil Engineering, School of Engineering, Faculty of Science and Engineering & Henry Royce Institute, University of Manchester, M13 9PL, Manchester, UK
| | - Alexandre Dufour
- 3d.FAB - ICBMS, CNRS UMR 5246, University Claude Bernard-Lyon 1 and University of Lyon, 1 rue Victor Grignard, Villeurbanne, 69100, France
| | - Carmelo De Maria
- Department of Information Engineering (DII) and Research Center "E. Piaggio", University of Pisa, Largo Lucio Lazzarino 1, Pisa, 56122, Italy
| | - Jürgen Groll
- ESA Topical Team on "3D Bioprinting of living tissue for utilization in space exploration and extraterrestrial human settlements", 01307, Dresden, Germany
- Department of Functional Materials in Medicine and Dentistry at the Institute of Functional Materials and Biofabrication (IFB) and Bavarian Polymer Institute (BPI), University of Würzburg, Pleicherwall 2, 97070, Würzburg, Germany
| | - Tomasz Jungst
- Department of Functional Materials in Medicine and Dentistry at the Institute of Functional Materials and Biofabrication (IFB) and Bavarian Polymer Institute (BPI), University of Würzburg, Pleicherwall 2, 97070, Würzburg, Germany
| | - Riccardo Levato
- Department of Orthopaedics, University Medical Center Utrecht, Department of Clinical Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, 3584 CX, The Netherlands
| | - Jos Malda
- ESA Topical Team on "3D Bioprinting of living tissue for utilization in space exploration and extraterrestrial human settlements", 01307, Dresden, Germany
- Department of Orthopaedics, University Medical Center Utrecht, Department of Clinical Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, 3584 CX, The Netherlands
| | - Alessandro Margarita
- Department of Mechanical Engineering, Politecnico di Milano, Via La Masa 1, Milano, 20156, Italy
| | - Christophe Marquette
- ESA Topical Team on "3D Bioprinting of living tissue for utilization in space exploration and extraterrestrial human settlements", 01307, Dresden, Germany
- 3d.FAB - ICBMS, CNRS UMR 5246, University Claude Bernard-Lyon 1 and University of Lyon, 1 rue Victor Grignard, Villeurbanne, 69100, France
| | - Aleksandr Ovsianikov
- ESA Topical Team on "3D Bioprinting of living tissue for utilization in space exploration and extraterrestrial human settlements", 01307, Dresden, Germany
- Research Group 3D Printing and Biofabrication, Institute of Materials Science and Technology, Austrian Cluster for Tissue Regeneration, TU Wien, Getreidemarkt 9/E308, Vienna, 1060, Austria
| | - Emma Petiot
- 3d.FAB - ICBMS, CNRS UMR 5246, University Claude Bernard-Lyon 1 and University of Lyon, 1 rue Victor Grignard, Villeurbanne, 69100, France
| | - Sophia Read
- Department of Mechanical, Aerospace and Civil Engineering, School of Engineering, Faculty of Science and Engineering & Henry Royce Institute, University of Manchester, M13 9PL, Manchester, UK
| | - Leonardo Surdo
- ESA Topical Team on "3D Bioprinting of living tissue for utilization in space exploration and extraterrestrial human settlements", 01307, Dresden, Germany
- Space Applications Services NV/SA for the European Space Agency (ESA), Keplerlaan 1, Noordwijk, 2201AG, The Netherlands
| | - Wojciech Swieszkowski
- ESA Topical Team on "3D Bioprinting of living tissue for utilization in space exploration and extraterrestrial human settlements", 01307, Dresden, Germany
- Biomaterials Group, Materials Design Division, Faculty of Materials Science and Engineering, Warsaw University of Technology, Woloska Str. 141, Warsaw, 02-507, Poland
| | - Giovanni Vozzi
- ESA Topical Team on "3D Bioprinting of living tissue for utilization in space exploration and extraterrestrial human settlements", 01307, Dresden, Germany
- Department of Information Engineering (DII) and Research Center "E. Piaggio", University of Pisa, Largo Lucio Lazzarino 1, Pisa, 56122, Italy
| | - Johannes Windisch
- Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital and Faculty of Medicine Carl Gustav Carus, Technische Universität Dresden, Fetscherstr. 74, 01307, Dresden, Germany
| | - Marcy Zenobi-Wong
- ESA Topical Team on "3D Bioprinting of living tissue for utilization in space exploration and extraterrestrial human settlements", 01307, Dresden, Germany
- Tissue Engineering + Biofabrication Laboratory, Department of Health Sciences and Technology, ETH Zurich Otto-Stern-Weg 7, Zürich, 8093, Switzerland
| | - Michael Gelinsky
- ESA Topical Team on "3D Bioprinting of living tissue for utilization in space exploration and extraterrestrial human settlements", 01307, Dresden, Germany
- Centre for Translational Bone, Joint and Soft Tissue Research, University Hospital and Faculty of Medicine Carl Gustav Carus, Technische Universität Dresden, Fetscherstr. 74, 01307, Dresden, Germany
| |
Collapse
|
3
|
Gullapalli VK, Zarbin MA. New Prospects for Retinal Pigment Epithelium Transplantation. Asia Pac J Ophthalmol (Phila) 2022; 11:302-313. [PMID: 36041145 DOI: 10.1097/apo.0000000000000521] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Accepted: 02/28/2022] [Indexed: 11/26/2022] Open
Abstract
ABSTRACT Retinal pigment epithelium (RPE) transplants rescue photoreceptors in selected animal models of retinal degenerative disease. Early clinical studies of RPE transplants as treatment for age-related macular degeneration (AMD) included autologous and allogeneic transplants of RPE suspensions and RPE sheets for atrophic and neovascular complications of AMD. Subsequent studies explored autologous RPE-Bruch membrane-choroid transplants in patients with neovascular AMD with occasional marked visual benefit, which establishes a rationale for RPE transplants in late-stage AMD. More recent work has involved transplantation of autologous and allogeneic stem cell-derived RPE for patients with AMD and those with Stargardt disease. These early-stage clinical trials have employed RPE suspensions and RPE monolayers on biocompatible scaffolds. Safety has been well documented, but evidence of efficacy is variable. Current research involves development of better scaffolds, improved modulation of immune surveillance, and modification of the extracellular milieu to improve RPE survival and integration with host retina.
Collapse
Affiliation(s)
| | - Marco A Zarbin
- Iinstitute of Ophthalmology and visual Science, Rutgers-New Jersey Medical School, Rutgers University, Newark, NJ, US
| |
Collapse
|
4
|
Rohiwal SS, Ellederová Z, Ardan T, Klima J. Advancement in Nanostructure-Based Tissue-Engineered Biomaterials for Retinal Degenerative Diseases. Biomedicines 2021; 9:biomedicines9081005. [PMID: 34440209 PMCID: PMC8393745 DOI: 10.3390/biomedicines9081005] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 08/07/2021] [Accepted: 08/10/2021] [Indexed: 12/20/2022] Open
Abstract
The review intends to overview a wide range of nanostructured natural, synthetic and biological membrane implants for tissue engineering to help in retinal degenerative diseases. Herein, we discuss the transplantation strategies and the new development of material in combination with cells such as induced pluripotent stem cells (iPSC), mature retinal cells, adult stem cells, retinal progenitors, fetal retinal cells, or retinal pigment epithelial (RPE) sheets, etc. to be delivered into the subretinal space. Retinitis pigmentosa and age-related macular degeneration (AMD) are the most common retinal diseases resulting in vision impairment or blindness by permanent loss in photoreceptor cells. Currently, there are no therapies that can repair permanent vision loss, and the available treatments can only delay the advancement of retinal degeneration. The delivery of cell-based nanostructure scaffolds has been presented to enrich cell survival and direct cell differentiation in a range of retinal degenerative models. In this review, we sum up the research findings on different types of nanostructure scaffolds/substrate or material-based implants, with or without cells, used to deliver into the subretinal space for retinal diseases. Though, clinical and pre-clinical trials are still needed for these transplants to be used as a clinical treatment method for retinal degeneration.
Collapse
|
5
|
Influence of Hard Segment Content and Diisocyanate Structure on the Transparency and Mechanical Properties of Poly(dimethylsiloxane)-Based Urea Elastomers for Biomedical Applications. Polymers (Basel) 2021; 13:polym13020212. [PMID: 33435271 PMCID: PMC7827567 DOI: 10.3390/polym13020212] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2020] [Revised: 01/01/2021] [Accepted: 01/04/2021] [Indexed: 11/26/2022] Open
Abstract
The effect of hard segment content and diisocyanate structure on the transparency and mechanical properties of soft poly(dimethylsiloxane) (PDMS)-based urea elastomers (PSUs) was investigated. A series of PSU elastomers were synthesized from an aminopropyl-terminated PDMS (M¯n: 16,300 g·mol−1), which was prepared by ring chain equilibration of the monomers octamethylcyclotetrasiloxane (D4) and 1,3-bis(3-aminopropyl)-tetramethyldisiloxane (APTMDS). The hard segments (HSs) comprised diisocyanates of different symmetry, i.e., 4,4′-methylenebis(cyclohexyl isocyanate) (H12MDI), 4,4′-methylenebis(phenyl isocyanate) (MDI), isophorone diisocyanate (IPDI), and trans-1,4-cyclohexane diisocyanate (CHDI). The HS contents of the PSU elastomers based on H12MDI and IPDI were systematically varied between 5% and 20% by increasing the ratio of the diisocyanate and the chain extender APTMDS. PSU copolymers of very low urea HS contents (1.0–1.6%) were prepared without the chain extender. All PSU elastomers and copolymers exhibited good elastomeric properties and displayed elongation at break values between 600% and 1100%. The PSUs with HS contents below 10% were transparent and became increasingly translucent at HS contents of 15% and higher. The Young’s modulus (YM) and ultimate tensile strength values of the elastomers increased linearly with increasing HS content. The YM values differed significantly among the PSU copolymers depending on the symmetry of the diisocyanate. The softest elastomer was that based on the asymmetric IPDI. The elastomers synthesized from H12MDI and MDI both exhibited an intermediate YM, while the stiffest elastomer, i.e., that comprising the symmetric CHDI, had a YM three-times higher than that prepared with IPDI. The PSUs were subjected to load–unload cycles at 100% and 300% strain to study the influence of HS morphology on 10-cycle hysteresis behavior. At 100% strain, the first-cycle hysteresis values of the IPDI- and H12MDI-based elastomers first decreased to a minimum of approximately 9–10% at an HS content of 10% and increased again to 22–28% at an HS content of 20%. A similar, though less pronounced, trend was observed at 300% strain. First-cycle hysteresis among the PSU copolymers at 100% strain was lowest in the case of CHDI and highest in the IPDI-based elastomer. However, this effect was reversed at 300% strain, with CHDI displaying the highest hysteresis in the first cycle. In vitro cytotoxicity tests performed using HaCaT cells did not show any adverse effects, revealing their potential suitability for biomedical applications.
Collapse
|
6
|
Murphy AR, Truong YB, O'Brien CM, Glattauer V. Bio-inspired human in vitro outer retinal models: Bruch's membrane and its cellular interactions. Acta Biomater 2020; 104:1-16. [PMID: 31945506 DOI: 10.1016/j.actbio.2020.01.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Revised: 01/07/2020] [Accepted: 01/09/2020] [Indexed: 12/17/2022]
Abstract
Retinal degenerative disorders, such as age-related macular degeneration (AMD), are one of the leading causes of blindness worldwide, however, treatments to completely stop the progression of these debilitating conditions are non-existent. Researchers require sophisticated models that can accurately represent the native structure of human retinal tissue to study these disorders. Current in vitro models used to study the retina are limited in their ability to fully recapitulate the structure and function of the retina, Bruch's membrane and the underlying choroid. Recent developments in the field of induced pluripotent stem cell technology has demonstrated the capability of retinal pigment epithelial cells to recapitulate AMD-like pathology. However, such studies utilise unsophisticated, bio-inert membranes to act as Bruch's membrane and support iPSC-derived retinal cells. This review presents a concise summary of the properties and function of the Bruch's membrane-retinal pigment epithelium complex, the initial pathogenic site of AMD as well as the current status for materials and fabrication approaches used to generate in vitro models of this complex tissue. Finally, this review explores required advances in the field of in vitro retinal modelling. STATEMENT OF SIGNIFICANCE: Retinal degenerative disorders such as age-related macular degeneration are worldwide leading causes of blindness. Previous attempts to model the Bruch's membrane-retinal pigment epithelial complex, the initial pathogenic site of age-related macular degeneration, have lacked the sophistication to elucidate valuable insights into disease mechanisms. Here we provide a detailed account of the morphological, physical and chemical properties of Bruch's membrane which may aid the fabrication of more sophisticated and physiologically accurate in vitro models of the retina, as well as various fabrication techniques to recreate this structure. This review also further highlights some recent advances in some additional challenging aspects of retinal tissue modelling including integrated fluid flow and photoreceptor alignment.
Collapse
Affiliation(s)
- Ashley R Murphy
- CSIRO Manufacturing, Research Way, Clayton, VIC 3168, Australia.
| | - Yen B Truong
- CSIRO Manufacturing, Research Way, Clayton, VIC 3168, Australia
| | - Carmel M O'Brien
- CSIRO Manufacturing, Research Way, Clayton, VIC 3168, Australia; Australian Regenerative Medicine Institute, Science, Technology, Research and Innovation Precinct (STRIP), Monash University, Clayton Campus, Wellington Road, Clayton, VIC 3800, Australia
| | | |
Collapse
|
7
|
Masaeli E, Forster V, Picaud S, Karamali F, Nasr-Esfahani MH, Marquette C. Tissue engineering of retina through high resolution 3-dimensional inkjet bioprinting. Biofabrication 2020; 12:025006. [PMID: 31578006 DOI: 10.1088/1758-5090/ab4a20] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The mammalian retina contains multiple cellular layers, each carrying out a specific task. Such a controlled organization should be considered as a crucial factor for designing retinal therapies. The maintenance of retinal layered complexity through the use of scaffold-free techniques has recently emerged as a promising approach for clinical ocular tissue engineering. In an attempt to fabricate such layered retinal model, we are proposing herein a unique inkjet bioprinting system applied to the deposition of a photoreceptor cells (PRs) layer on top of a bioprinted retinal pigment epithelium (RPE), in a precise arrangement and without any carrier material. The results showed that, after bioprinting, both RPE and PRs were well positioned in a layered structure and expressed their structural markers, which was further demonstrated by ZO1, MITF, rhodopsin, opsin B, opsin R/G and PNA immunostaining, three days after bioprinting. We also showed that considerable amounts of human vascular endothelial growth factors (hVEGF) were released from the RPE printed layer, which confirmed the formation of a functional RPE monolayer after bioprinting. Microstructures of bioprinted cells as well as phagocytosis of photoreceptor outer segments by apical RPE microvilli were finally established through transmission electron microscopy (TEM) imaging. In summary, using this carrier-free bioprinting method, it was possible to develop a reasonable in vitro retina model for studying some sight-threatening diseases, such as age-related macular degeneration (AMD) and retinitis pigmentosa (RP).
Collapse
Affiliation(s)
- Elahe Masaeli
- Department of Cellular Biotechnology, Cell Science Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran. 3d.FAB, Univ Lyon, Université Lyon1, CNRS, INSA, CPE-Lyon, ICBMS, UMR 5246, Bat. Lederer, 1 rue Victor Grignard, 69100 Villeurbanne, France
| | | | | | | | | | | |
Collapse
|
8
|
Tian Y, Zonca MR, Imbrogno J, Unser AM, Sfakis L, Temple S, Belfort G, Xie Y. Polarized, Cobblestone, Human Retinal Pigment Epithelial Cell Maturation on a Synthetic PEG Matrix. ACS Biomater Sci Eng 2017; 3:890-902. [PMID: 33429561 DOI: 10.1021/acsbiomaterials.6b00757] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Cell attachment is essential for the growth and polarization of retinal pigment epithelial (RPE) cells. Currently, surface coatings derived from biological proteins are used as the gold standard for cell culture. However, downstream processing and purification of these biological products can be cumbersome and expensive. In this study, we constructed a library of chemically modified nanofibers to mimic the Bruch's membrane of the retinal pigment epithelium. Using atmospheric-pressure plasma-induced graft polymerization with a high-throughput screening platform to modify the nanofibers, we identified three polyethylene glycol (PEG)-grafted nanofiber surfaces (PEG methyl ether methacrylate, n = 4, 8, and 45) from a library of 62 different surfaces as favorable for RPE cell attachment, proliferation, and maturation in vitro with cobblestone morphology. Compared with the biologically derived culture matrices such as vitronectin-based peptide Synthemax, our newly discovered synthetic PEG surfaces exhibit similar growth and polarization of retinal pigment epithelial (RPE) cells. However, they are chemically defined, are easy to synthesize on a large scale, are cost-effective, are stable with long-term storage capability, and provide a more physiologically accurate environment for RPE cell culture. To our knowledge, no one has reported that PEG derivatives directly support attachment and growth of RPE cells with cobblestone morphology. This study offers a unique PEG-modified 3D cell culture system that supports RPE proliferation, differentiation, and maturation with cobblestone morphology, providing a new avenue for RPE cell culture, disease modeling, and cell replacement therapy.
Collapse
Affiliation(s)
- Yangzi Tian
- Colleges of Nanoscale Science and Engineering, SUNY Polytechnic Institute, 257 Fuller Road, Albany, New York 12203, United States
| | - Michael R Zonca
- Colleges of Nanoscale Science and Engineering, SUNY Polytechnic Institute, 257 Fuller Road, Albany, New York 12203, United States
| | - Joseph Imbrogno
- Howard P. Isermann Department of Chemical and Biological Engineering and Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute (RPI), Troy, New York 12180, United States
| | - Andrea M Unser
- Colleges of Nanoscale Science and Engineering, SUNY Polytechnic Institute, 257 Fuller Road, Albany, New York 12203, United States
| | - Lauren Sfakis
- Colleges of Nanoscale Science and Engineering, SUNY Polytechnic Institute, 257 Fuller Road, Albany, New York 12203, United States
| | - Sally Temple
- Neural Stem Cell Institute, One Discovery Drive, Rensselaer, New York 12144, United States
| | - Georges Belfort
- Howard P. Isermann Department of Chemical and Biological Engineering and Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute (RPI), Troy, New York 12180, United States
| | - Yubing Xie
- Colleges of Nanoscale Science and Engineering, SUNY Polytechnic Institute, 257 Fuller Road, Albany, New York 12203, United States
| |
Collapse
|
9
|
Jung YJ, Kim KC, Heo JY, Jing K, Lee KE, Hwang JS, Lim K, Jo DY, Ahn JP, Kim JM, Huh KM, Park JI. Induction of Angiogenesis by Matrigel Coating of VEGF-Loaded PEG/PCL-Based Hydrogel Scaffolds for hBMSC Transplantation. Mol Cells 2015; 38:663-8. [PMID: 26159216 PMCID: PMC4507034 DOI: 10.14348/molcells.2015.0142] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2015] [Revised: 06/10/2015] [Accepted: 06/12/2015] [Indexed: 01/12/2023] Open
Abstract
hBMSCs are multipotent cells that are useful for tissue regeneration to treat degenerative diseases and others for their differentiation ability into chondrocytes, osteoblasts, adipocytes, hepatocytes and neuronal cells. In this study, biodegradable elastic hydrogels consisting of hydrophilic poly(ethylene glycol) (PEG) and hydrophobic poly(ε-caprolactone) (PCL) scaffolds were evaluated for tissue engineering because of its biocompatibility and the ability to control the release of bioactive peptides. The primary cultured cells from human bone marrow are confirmed as hBMSC by immunohistochemical analysis. Mesenchymal stem cell markers (collagen type I, fibronectin, CD54, integrin1β, and Hu protein) were shown to be positive, while hematopoietic stem cell markers (CD14 and CD45) were shown to be negative. Three different hydrogel scaffolds with different block compositions (PEG:PCL=6:14 and 14:6 by weight) were fabricated using the salt leaching method. The hBMSCs were expanded, seeded on the scaffolds, and cultured up to 8 days under static conditions in Iscove's Modified Dulbecco's Media (IMDM). The growth of MSCs cultured on the hydrogel with PEG/PCL= 6/14 was faster than that of the others. In addition, the morphology of MSCs seemed to be normal and no cytotoxicity was found. The coating of the vascular endothelial growth factor (VEGF) containing scaffold with Matrigel slowed down the release of VEGF in vitro and promoted the angiogenesis when transplanted into BALB/c nude mice. These results suggest that hBMSCs can be supported by a biode gradable hydrogel scaffold for effective cell growth, and enhance the angiogenesis by Matrigel coating.
Collapse
Affiliation(s)
- Yeon Joo Jung
- Department of Pharmacology and Medical Research Center, Ewha Womans University School of Medicine, Seoul 158-710,
Korea
| | - Kyung-Chul Kim
- Department of Biochemistry, School of Medicine, Chungnam National University, Daejeon 301-747,
Korea
| | - Jun-Young Heo
- Department of Biochemistry, School of Medicine, Chungnam National University, Daejeon 301-747,
Korea
| | - Kaipeng Jing
- Department of Biochemistry, School of Medicine, Chungnam National University, Daejeon 301-747,
Korea
- Research Institute of Medical School, Chungnam National University, Daejeon 301-747,
Korea
| | - Kyung Eun Lee
- Department of Pharmacology and Medical Research Center, Ewha Womans University School of Medicine, Seoul 158-710,
Korea
| | - Jun Seok Hwang
- Department of Pharmacology and Medical Research Center, Ewha Womans University School of Medicine, Seoul 158-710,
Korea
| | - Kyu Lim
- Department of Biochemistry, School of Medicine, Chungnam National University, Daejeon 301-747,
Korea
| | - Deog-Yeon Jo
- Division of Hematology/Oncology Department of Internal Medicine, Chungnam National University, Daejeon 301-747,
Korea
| | - Jae Pyoung Ahn
- Advanced Analysis Center, Korea Institute of Science and Technology, Seoul 136-791,
Korea
| | - Jin-Man Kim
- Department of Pathology, School of Medicine, Chungnam National University, Daejeon 301-747,
Korea
| | - Kang Moo Huh
- Department of Polymer Science and Engineering, Chungnam National University, Daejeon 305-764,
Korea
| | - Jong-Il Park
- Department of Biochemistry, School of Medicine, Chungnam National University, Daejeon 301-747,
Korea
- Research Institute of Medical School, Chungnam National University, Daejeon 301-747,
Korea
| |
Collapse
|
10
|
In vitro and in vivo ocular biocompatibility of electrospun poly(ɛ-caprolactone) nanofibers. Eur J Pharm Sci 2015; 73:9-19. [DOI: 10.1016/j.ejps.2015.03.003] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2014] [Revised: 01/21/2015] [Accepted: 03/03/2015] [Indexed: 11/23/2022]
|
11
|
Rho S, Park I, Seong GJ, Lee N, Lee CK, Hong S, Kim CY. Chronic Ocular Hypertensive Rat Model using Microbead Injection: Comparison of Polyurethane, Polymethylmethacrylate, Silica and Polystyene Microbeads. Curr Eye Res 2014; 39:917-27. [DOI: 10.3109/02713683.2014.884597] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
|
12
|
Da Silva GR, Da Silva-Cunha A, Vieira LC, Silva LM, Ayres E, Oréfice RL, Fialho SL, Saliba JB, Behar-Cohen F. Montmorillonite clay based polyurethane nanocomposite as substrate for retinal pigment epithelial cell growth. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2013; 24:1309-1317. [PMID: 23430334 DOI: 10.1007/s10856-013-4885-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2012] [Accepted: 02/04/2013] [Indexed: 06/01/2023]
Abstract
The subretinal transplantation of retinal pigment epithelial cells (RPE cells) grown on polymeric supports may have interest in retinal diseases affecting RPE cells. In this study, montmorillonite based polyurethane nanocomposite (PU-NC) was investigated as substrate for human RPE cell growth (ARPE-19 cells). The ARPE-19 cells were seeded on the PU-NC, and cell viability, proliferation and differentiation were investigated. The results indicated that ARPE-19 cells attached, proliferated onto the PU-NC, and expressed occludin. The in vivo ocular biocompatibility of the PU-NC was assessed by using the HET-CAM; and through its implantation under the retina. The direct application of the nanocomposite onto the CAM did not compromise the vascular tissue in the CAM surface, suggesting no ocular irritancy of the PU-NC film. The nanocomposite did not elicit any inflammatory response when implanted into the eye of rats. The PU-NC may have potential application as a substrate for RPE cell transplantation.
Collapse
Affiliation(s)
- Gisele Rodrigues Da Silva
- School of Pharmacy, Federal University of São João Del Rei, Av. Sebastião Gonçalves Coelho 400, Chanadour, Divinópolis, Minas Gerais 35500-296, Brazil.
| | | | | | | | | | | | | | | | | |
Collapse
|
13
|
Paula JS, Ribeiro VRC, Chahud F, Cannellini R, Monteiro TC, Gomes ECDL, Reinach PS, Rodrigues MDLV, Silva-Cunha A. Bevacizumab-loaded polyurethane subconjunctival implants: effects on experimental glaucoma filtration surgery. J Ocul Pharmacol Ther 2013; 29:566-73. [PMID: 23391327 DOI: 10.1089/jop.2012.0136] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
Abstract
PURPOSE Vascular endothelial growth factor (VEGF) may contribute to the scarring process resulting from glaucoma filtration surgery, since this cytokine may stimulate fibroblast proliferation. The aim of this study was to describe a new bevacizumab-loaded polyurethane implant (BPUI) and to evaluate its effectiveness as a new drug delivery system of anti-VEGF antibody in a rabbit model of glaucoma filtration surgery. METHODS An aqueous dispersion of polyurethane was obtained via the conventional process. Bevacizumab (1.5 mg) was then incorporated into the dispersion and was subsequently dried to form the polymeric films. Films with dimensions of 3×3×1 mm that either did (group BPUI, n=10) or did not contain bevacizumab (group PUI, n=10) were implanted in the subconjunctival space, at the surgical site in 1 eye of each rabbit. The in vitro bevacizumab release was evaluated using size-exclusion high-performance liquid chromatography (HPLC), and the in vivo effects of the drug were investigated in a rabbit experimental trabeculectomy model by examining the bleb characteristics and collagen accumulation, and by performing immunohistological analyses of VEGF expression. RESULTS HPLC showed that only 10% of the bevacizumab in the implants had been released by postoperative day 5. In vivo studies demonstrated that the drug had no adverse effects; however, no significant differences in either the bleb area score or the collagen deposit intensity between the group PUI and the group that BPUI were observed. Moreover, the group BPUI presented a significantly lower proportion of VEGF-expressing fibroblasts than group PUI (0.17±0.03 vs. 0.35±0.05 cells/field, P=0.005). CONCLUSIONS This study demonstrated that bevacizumab release from the BPUIs only occurred for a short time probably from the surface of the films. Nevertheless, they were well tolerated in rabbit eyes and reduced the number of VEGF-expressing fibroblasts.
Collapse
Affiliation(s)
- Jayter Silva Paula
- Department of Ophthalmology, Otorhinolaryngology and Head and Neck Surgery, School of Medicine of Ribeirão Preto-University of São Paulo, Ribeirão Preto, São Paulo, Brazil.
| | | | | | | | | | | | | | | | | |
Collapse
|