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Atalay E, Altuğ B, Çalışkan ME, Ceylan S, Özler ZS, Figueiredo G, Lako M, Figueiredo F. Animal Models for Limbal Stem Cell Deficiency: A Critical Narrative Literature Review. Ophthalmol Ther 2024; 13:671-696. [PMID: 38280103 PMCID: PMC10853161 DOI: 10.1007/s40123-023-00880-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Accepted: 12/19/2023] [Indexed: 01/29/2024] Open
Abstract
This literature review will provide a critical narrative overview of the highlights and potential pitfalls of the reported animal models for limbal stem cell deficiency (LSCD) and will identify the neglected aspects of this research area. There exists significant heterogeneity in the literature regarding the methodology used to create the model and the predefined duration after the insult when the model is supposedly fully fit for evaluations and/or for testing various therapeutic interventions. The literature is also replete with examples wherein the implementation of a specific model varies significantly across different studies. For example, the concentration of the chemical, as well as its duration and technique of exposure in a chemically induced LSCD model, has a great impact not only on the validity of the model but also on the severity of the complications. Furthermore, while some models induce a full-blown clinical picture of total LSCD, some are hindered by their ability to yield only partial LSCD. Another aspect to consider is the nature of the damage induced by a specific method. As thermal methods cause more stromal scarring, they may be better suited for assessing the anti-fibrotic properties of a particular treatment. On the other hand, since chemical burns cause more neovascularisation, they provide the opportunity to tap into the potential treatments for anti-neovascularisation. The animal species (i.e., rats, mice, rabbits, etc.) is also a crucial factor in the validity of the model and its potential for clinical translation, with each animal having its unique set of advantages and disadvantages. This review will also elaborate on other overlooked aspects, such as the anaesthetic(s) used during experiments, the gender of the animals, care after LSCD induction, and model validation. The review will conclude by providing future perspectives and suggestions for further developments in this rather important area of research.
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Affiliation(s)
- Eray Atalay
- Department of Ophthalmology, Eskişehir Osmangazi University Medical School, Eskişehir, Turkey
| | - Burcugül Altuğ
- Cellular Therapy and Stem Cell Production Application, Research Centre (ESTEM), Eskişehir Osmangazi University, Eskişehir, Turkey
| | | | - Semih Ceylan
- Eskişehir Osmangazi University Medical School, Eskişehir, Turkey
| | | | | | - Majlinda Lako
- Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - Francisco Figueiredo
- Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK.
- Department of Ophthalmology, Royal Victoria Infirmary, Newcastle University, Newcastle upon Tyne, NE1 4LP, UK.
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Wang Z, Jiang C, Fan Y, Hao X, Dong Y, He X, Gao J, Zhang Y, Li M, Wang M, Liu Y, Xu W. The application of a 4D-printed chitosan-based stem cell carrier for the repair of corneal alkali burns. Stem Cell Res Ther 2024; 15:41. [PMID: 38355568 PMCID: PMC10865625 DOI: 10.1186/s13287-024-03653-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2023] [Accepted: 01/27/2024] [Indexed: 02/16/2024] Open
Abstract
BACKGROUND Corneal alkali burns can lead to ulceration, perforation, and even corneal blindness due to epithelial defects and extensive cell necrosis, resulting in poor healing outcomes. Previous studies have found that chitosan-based in situ hydrogel loaded with limbal epithelium stem cells (LESCs) has a certain reparative effect on corneal alkali burns. However, the inconsistent pore sizes of the carriers and low cell loading rates have resulted in suboptimal repair outcomes. In this study, 4D bioprinting technology was used to prepare a chitosan-based thermosensitive gel carrier (4D-CTH) with uniform pore size and adjustable shape to improve the transfer capacity of LESCs. METHODS Prepare solutions of chitosan acetate, carboxymethyl chitosan, and β-glycerophosphate sodium at specific concentrations, and mix them in certain proportions to create a pore-size uniform scaffold using 4D bioprinting technology. Extract and culture rat LESCs (rLESCs) in vitro, perform immunofluorescence experiments to observe the positivity rate of deltaNp63 cells for cell identification. Conduct a series of experiments to validate the cell compatibility of 4D-CTH, including CCK-8 assay to assess cell toxicity, scratch assay to evaluate the effect of 4D-CTH on rLESCs migration, and Calcein-AM/PI cell staining experiment to examine the impact of 4D-CTH on rLESCs proliferation and morphology. Establish a severe alkali burn model in rat corneas, transplant rLESCs onto the injured cornea using 4D-CTH, periodically observe corneal opacity and neovascularization using a slit lamp, and evaluate epithelial healing by fluorescein sodium staining. Assess the therapeutic effect 4D-CTH-loaded rLESCs on corneal alkali burn through histological evaluation of corneal tissue paraffin sections stained with hematoxylin and eosin, as well as immunofluorescence staining of frozen sections. RESULTS Using the 4D-CTH, rLESCs were transferred to the alkali burn wounds of rats. Compared with the traditional treatment group (chitosan in situ hydrogel encapsulating rLESCs), the 4D-CTH-rLESC group had significantly higher repair efficiency of corneal injury, such as lower corneal opacity score (1.2 ± 0.4472 vs 0.4 ± 0.5477, p < 0.05) and neovascularization score (5.5 ± 1.118 vs 2.6 ± 0.9618, p < 0.01), and significantly higher corneal epithelial wound healing rate (72.09 ± 3.568% vs 86.60 ± 5.004%, p < 0.01). CONCLUSION In summary, the corneas of the 4D-CTH-rLESC treatment group were similar to the normal corneas and had a complete corneal structure. These findings suggested that LESCs encapsulated by 4D-CTH significantly accelerated corneal wound healing after alkali burn and can be considered as a rapid and effective method for treating epithelial defects.
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Affiliation(s)
- Zibo Wang
- Institute of Regenerative Medicine and Laboratory Technology Innovation, Qingdao University, Qingdao, 266071, Shandong, China
- Department of Clinical Laboratory, Affiliated Hospital of Qingdao University, Qingdao, 266003, China
| | - Changqing Jiang
- Department of Pathology, Qingdao Municipal Hospital, Qingdao, 266000, Shandong, China
| | - Yuqiao Fan
- Institute of Regenerative Medicine and Laboratory Technology Innovation, Qingdao University, Qingdao, 266071, Shandong, China
| | - Xiaodan Hao
- Institute of Translational Medicine, College of Medicine, Qingdao University, Qingdao, 266003, Shandong, China
| | - Yanhan Dong
- Institute of Translational Medicine, College of Medicine, Qingdao University, Qingdao, 266003, Shandong, China
| | - Xinjia He
- Department of Oncology, Affiliated Hospital of Qingdao University, Qingdao, 266003, Shandong, China
| | - Jinning Gao
- Institute of Translational Medicine, College of Medicine, Qingdao University, Qingdao, 266003, Shandong, China
| | - Yongchun Zhang
- Department of Oncology, Affiliated Hospital of Qingdao University, Qingdao, 266003, Shandong, China
| | - Meng Li
- Institute of Regenerative Medicine and Laboratory Technology Innovation, Qingdao University, Qingdao, 266071, Shandong, China
| | - Mengyuan Wang
- Institute of Regenerative Medicine and Laboratory Technology Innovation, Qingdao University, Qingdao, 266071, Shandong, China
| | - Yiming Liu
- Institute of Regenerative Medicine and Laboratory Technology Innovation, Qingdao University, Qingdao, 266071, Shandong, China
| | - Wenhua Xu
- Institute of Regenerative Medicine and Laboratory Technology Innovation, Qingdao University, Qingdao, 266071, Shandong, China.
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Wang M, Li Y, Wang H, Li M, Wang X, Liu R, Zhang D, Xu W. Corneal regeneration strategies: From stem cell therapy to tissue engineered stem cell scaffolds. Biomed Pharmacother 2023; 165:115206. [PMID: 37494785 DOI: 10.1016/j.biopha.2023.115206] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 07/12/2023] [Accepted: 07/18/2023] [Indexed: 07/28/2023] Open
Abstract
Corneal epithelial defects and excessive wound healing might lead to severe complications. As stem cells can self-renew infinitely, they are a promising solution for regenerating the corneal epithelium and treating severe corneal epithelial injury. The chemical and biophysical properties of biological scaffolds, such as the amniotic membrane, fibrin, and hydrogels, can provide the necessary signals for stem cell proliferation and differentiation. Multiple researchers have conducted investigations on these scaffolds and evaluated them as potential therapeutic interventions for corneal disorders. These studies have identified various inherent benefits and drawbacks associated with these scaffolds. In this study, we provided a comprehensive overview of the history and use of various stem cells in corneal repair. We mainly discussed biological scaffolds that are used in stem cell transplantation and innovative materials that are under investigation.
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Affiliation(s)
- Mengyuan Wang
- Institute of Regenerative Medicine and Laboratory Technology Innovation, Qingdao University, Qingdao, Shandong 266071, PR China
| | - Ying Li
- Institute of Regenerative Medicine and Laboratory Technology Innovation, Qingdao University, Qingdao, Shandong 266071, PR China
| | - Hongqiao Wang
- Blood Purification Department, Qingdao Hospital of Traditional Chinese Medicine, Qingdao Hiser Hospital, Qingdao, Shandong 266071, PR China
| | - Meng Li
- Institute of Regenerative Medicine and Laboratory Technology Innovation, Qingdao University, Qingdao, Shandong 266071, PR China
| | - Xiaomin Wang
- Institute of Regenerative Medicine and Laboratory Technology Innovation, Qingdao University, Qingdao, Shandong 266071, PR China
| | - Rongzhen Liu
- Institute of Regenerative Medicine and Laboratory Technology Innovation, Qingdao University, Qingdao, Shandong 266071, PR China
| | - Daijun Zhang
- Medical College of Qingdao University, Qingdao, Shandong 266071, PR China.
| | - Wenhua Xu
- Institute of Regenerative Medicine and Laboratory Technology Innovation, Qingdao University, Qingdao, Shandong 266071, PR China.
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Ross M, Amaral N, Taiyab A, Sheardown H. Delivery of Cells to the Cornea Using Synthetic Biomaterials. Cornea 2022; Publish Ahead of Print. [DOI: 10.1097/ico.0000000000003094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Accepted: 05/24/2022] [Indexed: 11/26/2022]
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Sarvari R, Keyhanvar P, Agbolaghi S, Roshangar L, Bahremani E, Keyhanvar N, Haghdoost M, Keshel SH, Taghikhani A, Firouzi N, Valizadeh A, Hamedi E, Nouri M. A comprehensive review on methods for promotion of mechanical features and biodegradation rate in amniotic membrane scaffolds. J Mater Sci Mater Med 2022; 33:32. [PMID: 35267104 PMCID: PMC8913518 DOI: 10.1007/s10856-021-06570-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Accepted: 06/07/2021] [Indexed: 06/14/2023]
Abstract
Amniotic membrane (AM) is a biological tissue that surrounds the fetus in the mother's womb. It has pluripotent cells, immune modulators, collagen, cytokines with anti-fibrotic and anti-inflammatory effect, matrix proteins, and growth factors. In spite of the biological characteristics, some results have been released in preventing the adhesion on traumatized surfaces. Application of the AM as a scaffold is limited due to its low biomechanical resistance and rapid biodegradation. Therefore, for using the AM during surgery, its modification by different methods such as cross-linking of the membrane collagen is necessary, because the cross-linking is an effective way to reduce the rate of biodegradation of the biological materials. In addition, their cross-linking is likely an efficient way to increase the tensile properties of the material, so that they can be easily handled or sutured. In this regard, various methods related to cross-linking of the AM subsuming the composite materials, physical cross-linking, and chemical cross-linking with the glutraldehyde, carbodiimide, genipin, aluminum sulfate, etc. are reviewed along with its advantages and disadvantages in the current work.
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Affiliation(s)
- Raana Sarvari
- Stem Cell And Regenerative Medicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Peyman Keyhanvar
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
- Department of Medical Nanotechnology, School of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran.
- Convergence of Knowledge, Technology and Society Network (CKTSN), Universal Scientific Education and Research Network (USERN), Tabriz, Iran.
- ARTAN1100 Startup Accelerator, Tabriz, Iran.
| | - Samira Agbolaghi
- Chemical Engineering Department, Faculty of Engineering, Azarbaijan Shahid Madani University, P.O. BOX: 5375171379, Tabriz, Iran
| | - Leila Roshangar
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Erfan Bahremani
- Alavi Ophthalmological Treatment and Educational Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Neda Keyhanvar
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
- Gene Yakhteh Keyhan (Genik) Company (Ltd), Pharmaceutical Biotechnology Incubator, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mehdi Haghdoost
- Department of Infectious Diseases, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Saeed Heidari Keshel
- Medical Nanotechnology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Afsaneh Taghikhani
- Department of Chemistry, Tabriz Branch, Islamic Azad University, Tabriz, Iran
| | - Nima Firouzi
- Stem Cell and Tissue Engineering Research Laboratory, Chemical Engineering Faculty, Sahand University of Technology, P.O.BOX:51335-1996, Tabriz, Iran
- Phil and Penny Knight Campus for Accelerating Scientific Impact, University of Oregon Eugene, OR, 97403, USA
| | - Amir Valizadeh
- Stem Cell And Regenerative Medicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Elham Hamedi
- Department of Tissue Engineering and Applied Cell Science, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad Nouri
- Stem Cell And Regenerative Medicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran.
- Department of Reproductive Biology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran.
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Tan Y, Chen D, Wang Y, Wang W, Xu L, Liu R, You C, Li G, Zhou H, Li D. Limbal Bio-engineered Tissue Employing 3D Nanofiber-Aerogel Scaffold to Facilitate LSCs Growth and Migration. Macromol Biosci 2022; 22:e2100441. [PMID: 35020979 DOI: 10.1002/mabi.202100441] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 12/14/2021] [Indexed: 11/09/2022]
Abstract
Constrained by the existing scaffold inability to mimic limbal niche, limbal bio-engineered tissue constructed in vitro is challenging to be widely used in clinical practice. Here, 3D nanofiber-aerogel scaffold was fabricated by employing thermal cross-linking electrospinned film Polycaprolactone (PCL) and gelatin (GEL) as the precursor. Benefiting from the cross-linked (160°C, vacuum) structure, the homogenized and lyophilized 3D nanofiber-aerogel scaffold with preferable mechanical strength was capable of refraining the volume collapse in humid vitro. Intriguingly, compared with traditional electrospinning scaffolds, our 3D nanofiber-aerogel scaffolds possessed enhanced water absorption (1100%-1300%), controllable aperture (50-100 μm) and excellent biocompatibility (optical density value, 0.953 ± 0.021). The well-matched aperture and nanostructure of the scaffolds with cells enabled the construction of limbal bio-engineered tissue. It is foreseen that the proposed general method could be extended to various aerogels, providing new opportunities for the development of novel limbal bio-engineered tissue. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Yongyao Tan
- Y. Tan, W. Wang, L. Xu, R. Liu, C. You, G. Li, Department of Ophthalmology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Dan Chen
- D. Chen, Y. Wang, H. Zhou, D. Li, State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Yunming Wang
- D. Chen, Y. Wang, H. Zhou, D. Li, State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Wei Wang
- Y. Tan, W. Wang, L. Xu, R. Liu, C. You, G. Li, Department of Ophthalmology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Lingjuan Xu
- Y. Tan, W. Wang, L. Xu, R. Liu, C. You, G. Li, Department of Ophthalmology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Rong Liu
- Y. Tan, W. Wang, L. Xu, R. Liu, C. You, G. Li, Department of Ophthalmology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Chunxiu You
- Y. Tan, W. Wang, L. Xu, R. Liu, C. You, G. Li, Department of Ophthalmology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Guigang Li
- Y. Tan, W. Wang, L. Xu, R. Liu, C. You, G. Li, Department of Ophthalmology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Huamin Zhou
- D. Chen, Y. Wang, H. Zhou, D. Li, State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Dequn Li
- D. Chen, Y. Wang, H. Zhou, D. Li, State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
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Xu W, Kong B, Xie H, Zhang J, Liu W, Liu S, Zhang Y, Yang F, Xiao J, Mi S, Xiong L, Zhang M, Jiang F. PCL scaffold combined with rat tail collagen type I to reduce keratocyte differentiation and prevent corneal stroma fibrosis after injury. Exp Eye Res 2022; 217:108936. [DOI: 10.1016/j.exer.2022.108936] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 12/15/2021] [Accepted: 01/07/2022] [Indexed: 11/15/2022]
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9
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Delic NC, Cai JR, Watson SL, Downie LE, Di Girolamo N. Evaluating the clinical translational relevance of animal models for limbal stem cell deficiency: A systematic review. Ocul Surf 2021:S1542-0124(21)00105-1. [PMID: 34583088 DOI: 10.1016/j.jtos.2021.09.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Revised: 09/20/2021] [Accepted: 09/23/2021] [Indexed: 12/13/2022]
Abstract
PURPOSE Animal models are pivotal for elucidating pathophysiological mechanisms and evaluating novel therapies. This systematic review identified studies that developed or adapted animal models of limbal stem cell deficiency (LSCD), assessed their reporting quality, summarized their key characteristics, and established their clinical translational relevance to human disease. METHODS The protocol was prospectively registered (PROSPERO CRD42020203937). Searches were conducted in PubMed, Ovid EMBASE and Web of Science in August 2020. Two authors screened citations, extracted data, assessed the reporting quality of eligible studies using the ARRIVE guidelines, and judged the clinical translational relevance of each model using a custom matrix. RESULTS 105 studies were included. Rabbits were the most common animal species. Overall, 97% of studies recapitulated LSCD to a clinical etiology, however 62% did not provide sufficient methodological detail to enable independent reproduction of the model. Adverse events and/or exclusion of animals were infrequently (20%) reported. Approximately one-quarter of studies did not produce the intended severity of LSCD; 34% provided insufficient information to assess the fidelity of disease induction. Adjunctive diagnostic confirmation of LSCD induction was performed in 13% of studies. CONCLUSIONS This is the first systematic review to assess the reporting quality and clinical translational relevance of animal models of LSCD. Models of LSCD have evolved over time, resulting in variable reporting of the characteristics of animals, experimental procedures and adverse events. In most studies, validation of LSCD was made using clinical tests; newer adjunctive techniques would enhance diagnostic validation. As most studies sought to evaluate novel therapies for LSCD, animal models should ideally recapitulate all features of the condition that develop in patients.
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Zhong Z, Balayan A, Tian J, Xiang Y, Hwang HH, Wu X, Deng X, Schimelman J, Sun Y, Ma C, Santos AD, You S, Tang M, Yao E, Shi X, Steinmetz NF, Deng SX, Chen S. Bioprinting of dual ECM scaffolds encapsulating limbal stem/progenitor cells in active and quiescent statuses. Biofabrication 2021; 13:10.1088/1758-5090/ac1992. [PMID: 34330126 PMCID: PMC8716326 DOI: 10.1088/1758-5090/ac1992] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Accepted: 07/30/2021] [Indexed: 01/06/2023]
Abstract
Limbal stem cell deficiency and corneal disorders are among the top global threats for human vision. Emerging therapies that integrate stem cell transplantation with engineered hydrogel scaffolds for biological and mechanical support are becoming a rising trend in the field. However, methods for high-throughput fabrication of hydrogel scaffolds, as well as knowledge of the interaction between limbal stem/progenitor cells (LSCs) and the surrounding extracellular matrix (ECM) are still much needed. Here, we employed digital light processing (DLP)-based bioprinting to fabricate hydrogel scaffolds encapsulating primary LSCs and studied the ECM-dependent LSC phenotypes. The DLP-based bioprinting with gelatin methacrylate (GelMA) or hyaluronic acid glycidyl methacrylate (HAGM) generated microscale hydrogel scaffolds that could support the viability of the encapsulated primary rabbit LSCs (rbLSCs) in culture. Immunocytochemistry and transcriptional analysis showed that the encapsulated rbLSCs remained active in GelMA-based scaffolds while exhibited quiescence in the HAGM-based scaffolds. The primary human LSCs encapsulated within bioprinted scaffolds showed consistent ECM-dependent active/quiescent statuses. Based on these results, we have developed a novel bioprinted dual ECM 'Yin-Yang' model encapsulating LSCs to support both active and quiescent statues. Our findings provide valuable insights towards stem cell therapies and regenerative medicine for corneal reconstruction.
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Affiliation(s)
- Zheng Zhong
- Department of NanoEngineering, University of California San Diego, La Jolla, CA 92093, USA
| | - Alis Balayan
- Department of NanoEngineering, University of California San Diego, La Jolla, CA 92093, USA
- School of Medicine, University of California San Diego, La Jolla, CA 92093, USA
| | - Jing Tian
- Department of Bioengineering, University of California San Diego, La Jolla, CA 92093, USA
| | - Yi Xiang
- Department of NanoEngineering, University of California San Diego, La Jolla, CA 92093, USA
| | - Henry H. Hwang
- Department of NanoEngineering, University of California San Diego, La Jolla, CA 92093, USA
| | - Xiaokang Wu
- School of Medicine, University of California San Diego, La Jolla, CA 92093, USA
| | - Xiaoqian Deng
- School of Medicine, University of California San Diego, La Jolla, CA 92093, USA
| | - Jacob Schimelman
- Department of NanoEngineering, University of California San Diego, La Jolla, CA 92093, USA
| | - Yazhi Sun
- Department of NanoEngineering, University of California San Diego, La Jolla, CA 92093, USA
| | - Chao Ma
- Stein Eye Institute, University of California Los Angeles, Los Angeles, CA 90095, USA
| | - Aurelie D. Santos
- Stein Eye Institute, University of California Los Angeles, Los Angeles, CA 90095, USA
| | - Shangting You
- Department of NanoEngineering, University of California San Diego, La Jolla, CA 92093, USA
| | - Min Tang
- Department of NanoEngineering, University of California San Diego, La Jolla, CA 92093, USA
| | - Emmie Yao
- Department of NanoEngineering, University of California San Diego, La Jolla, CA 92093, USA
| | - Xiaoao Shi
- Department of Bioengineering, University of California San Diego, La Jolla, CA 92093, USA
| | - Nicole F. Steinmetz
- Department of NanoEngineering, University of California San Diego, La Jolla, CA 92093, USA
| | - Sophie X. Deng
- Stein Eye Institute, University of California Los Angeles, Los Angeles, CA 90095, USA
| | - Shaochen Chen
- Department of NanoEngineering, University of California San Diego, La Jolla, CA 92093, USA
- Department of Bioengineering, University of California San Diego, La Jolla, CA 92093, USA
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Sarvari R, Keyhanvar P, Agbolaghi S, Gholami Farashah MS, Sadrhaghighi A, Nouri M, Roshangar L. Shape-memory materials and their clinical applications. INT J POLYM MATER PO 2020. [DOI: 10.1080/00914037.2020.1833010] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Raana Sarvari
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
- Stem Cell And Regenerative Medicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Peyman Keyhanvar
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
- Department of Medical Nanotechnology, School of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
- Convergence of Knowledge, Technology and Society Network (CKTSN), Universal Scientific Education and Research Network (USERN), Tabriz, Iran
- ARTAN110 Startup Accelerator, Tabriz, Iran
| | - Samira Agbolaghi
- Chemical Engineering Department, Faculty of Engineering, Azarbaijan Shahid Madani University, Tabriz, Iran
| | | | - Amirhouman Sadrhaghighi
- Department of Orthodontics, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Nouri
- Department of Reproductive Biology, Faculty of Advanced Medical Sciences, University of Medical Sciences, Tabriz, Iran
| | - Laila Roshangar
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
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Tominac Trcin M, Zdraveva E, Dolenec T, Vrgoč Zimić I, Bujić Mihica M, Batarilo I, Dekaris I, Blažević V, Slivac I, Holjevac Grgurić T, Bajsić EG, Markov K, Čanak I, Kuzmić S, Tarbuk A, Tomljenović A, Mrkonjić N, Mijović B. Poly(ε-caprolactone) Titanium Dioxide and Cefuroxime Antimicrobial Scaffolds for Cultivation of Human Limbal Stem Cells. Polymers (Basel) 2020; 12:E1758. [PMID: 32781567 DOI: 10.3390/polym12081758] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 07/23/2020] [Accepted: 07/31/2020] [Indexed: 12/13/2022] Open
Abstract
Limbal Stem Cell Deficiency (LSCD) is a very serious and painful disease that often results in impaired vision. Cultivation of limbal stem cells for clinical application is usually performed on carriers such as amniotic membrane or surgical fibrin gel. Transplantation of these grafts is associated with the risk of local postoperative infection that can destroy the graft and devoid therapeutic benefit. For this reason, electrospun scaffolds are good alternatives, as proven to mimic the natural cells surroundings, while their fabrication technique is versatile with regard to polymer functionalization and scaffolds architecture. This study considers the development of poly(ε-caprolactone) (PCL) immune-compatible and biodegradable electrospun scaffolds, comprising cefuroxime (CF) or titanium dioxide (TiO2) active components, that provide both bactericidal activity against eye infections and support of limbal stem cells growth in vitro. The PCL/CF scaffolds were prepared by blend electrospinning, while functionalization with the TiO2 particles was performed by ultrasonic post-processing treatment. The fabricated scaffolds were evaluated in regard to their physical structure, wetting ability, static and dynamic mechanical behaviour, antimicrobial efficiency and drug release, through scanning electron microscopy, water contact angle measurement, tensile testing and dynamic mechanical analysis, antimicrobial tests and UV-Vis spectroscopy, respectively. Human limbal stem cells, isolated from surgical remains of human cadaveric cornea, were cultured on the PCL/CF and PCL/TiO2 scaffolds and further identified through immunocytochemistry in terms of cell type thus were stained against p63 marker for limbal stem cells, a nuclear transcription factor and cytokeratin 3 (CK3), a corneal epithelial differentiation marker. The electrospun PCL/CF and PCL/TiO2 successfully supported the adhesion, proliferation and differentiation of the cultivated limbal cells and provided the antimicrobial effect against Pseudomonas aeruginosa, Staphylococcus aureus and Candida albicans.
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