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Bonnet C, Gonzalez S, Deng SX. Limbal stem cell therapy. Curr Opin Ophthalmol 2024; 35:309-314. [PMID: 38813737 DOI: 10.1097/icu.0000000000001061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2024]
Abstract
PURPOSE OF REVIEW To highlight the progress and future direction of limbal stem cell (LSC) therapies for the treatment of limbal stem cell deficiency (LSCD). RECENT FINDINGS Direct LSC transplantation have demonstrated good long-term outcomes. Cultivated limbal epithelial transplantation (CLET) has been an alternative to treat severe to total LSCD aiming to improve the safety and efficacy of the LSC transplant. A prospective early-stage uncontrolled clinical trial shows the feasibility and safety of CLET manufactured under xenobiotic free conditions. Other cell sources for repopulating of the corneal epithelium such as mesenchymal stem cells (MSCs) and induced pluripotent stem cells are being investigated. The first clinical trials of using MSCs showed short-term results, but long-term efficacy seems to be disappointing. A better understanding of the niche function and regulation of LSC survival and proliferation will lead to the development of medical therapies to rejuvenate the residual LSCs found in a majority of eyes with LSCD in vivo. Prior efforts have been largely focused on improving LSC transplantation. Additional effort should be placed on improving the accuracy of diagnosis and staging of LSCD, and implementing standardized outcome measures which enable comparison of efficacy of different LSCD treatments for different severity of LSCD. The choice of LSCD treatment will be customized based on the severity of LSCD in the future. SUMMARY New approaches for managing different stages of LSCD are being developed. This concise review summarizes the progresses in LSC therapies for LSCD, underlying mechanisms, limitations, and future areas of development.
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Affiliation(s)
- Clemence Bonnet
- Stein Eye Institute, University of California, Los Angeles, California, USA
- Centre de Recherche des Cordeliers, INSERM 1138, Paris Cité Université, AP-HP, Paris, France
| | - Sheyla Gonzalez
- Stein Eye Institute, University of California, Los Angeles, California, USA
| | - Sophie X Deng
- Stein Eye Institute, University of California, Los Angeles, California, USA
- Molecular Biology Institute, University of California, Los Angeles, California, USA
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Xiao Y, McGhee CNJ, Zhang J. Adult stem cells in the eye: Identification, characterisation, and therapeutic application in ocular regeneration - A review. Clin Exp Ophthalmol 2024; 52:148-166. [PMID: 38214071 DOI: 10.1111/ceo.14309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Accepted: 09/25/2023] [Indexed: 01/13/2024]
Abstract
Adult stem cells, present in various parts of the human body, are undifferentiated cells that can proliferate and differentiate to replace dying cells within tissues. Stem cells have specifically been identified in the cornea, trabecular meshwork, crystalline lens, iris, ciliary body, retina, choroid, sclera, conjunctiva, eyelid, lacrimal gland, and orbital fat. The identification of ocular stem cells broadens the potential therapeutic strategies for untreatable eye diseases. Currently, stem cell transplantation for corneal and conjunctival diseases remains the most common stem cell-based therapy in ocular clinical management. Lens epithelial stem cells have been applied in the treatment of paediatric cataracts. Several early-phase clinical trials for corneal and retinal regeneration using ocular stem cells are also underway. Extensive preclinical studies using ocular stem cells have been conducted, showing encouraging outcomes. Ocular stem cells currently demonstrate great promise in potential treatments of eye diseases. In this review, we focus on the identification, characterisation, and therapeutic application of adult stem cells in the eye.
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Affiliation(s)
- Yuting Xiao
- Department of Ophthalmology, New Zealand National Eye Centre, Faculty of Medical and Health Sciences, The University of Auckland, Auckland, New Zealand
| | - Charles N J McGhee
- Department of Ophthalmology, New Zealand National Eye Centre, Faculty of Medical and Health Sciences, The University of Auckland, Auckland, New Zealand
| | - Jie Zhang
- Department of Ophthalmology, New Zealand National Eye Centre, Faculty of Medical and Health Sciences, The University of Auckland, Auckland, New Zealand
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3
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Bonnet C, González S, Deng SX, Zheng JJ. Wnt activation as a potential therapeutic approach to treat partial limbal stem cell deficiency. Sci Rep 2023; 13:15670. [PMID: 37735479 PMCID: PMC10514048 DOI: 10.1038/s41598-023-42794-8] [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: 01/05/2023] [Accepted: 09/14/2023] [Indexed: 09/23/2023] Open
Abstract
Limbal epithelial stem/progenitor cells (LSCs) are adult stem cells located at the limbus, tightly regulated by their niche involving numerous signaling pathways, such as Wnt. Wnt proteins are secreted morphogens that play critical roles in embryonic development, stem cell proliferation, self-renewal, tissue regeneration, and remodeling in adults. It has been shown that a small molecule Wnt mimic could improve LSCs expansion ex vivo. Damage to the LSCs and/or their niche can lead to limbal stem cell deficiency (LSCD), a condition that can cause corneal blindness and is difficult to treat. This study explored if repopulating residual LSCs in partial LSCD through Wnt activation could be a novel therapeutic approach. To mimic LSCD due to a chemical injury, single cultured LSCs were exposed to various concentrations of sodium hydroxide. A progressive loss of the LSCs phenotype was observed: the percentage of p63bright cells and cytokeratin (K)14+ cells decreased while the percentage of K12+ increased. Wnt activation was attained by treating the LSCs with lithium chloride (LiCl) and a small-molecule Wnt mimic, respectively. After 18 h of treatment, LSCs proliferation was increased, and the LSCs phenotype was recovered, while the untreated cells did not proliferate and lost their phenotype. The percentage of p63bright cells was significantly higher in the Wnt mimic-treated cells compared with untreated cells, while the percentage of K12+ cells was significantly lower. These findings suggest that local Wnt activation may rescue LSCs upon alkaline injury.
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Affiliation(s)
- Clémence Bonnet
- Department of Ophthalmology, Stein Eye Institute, David Geffen School of Medicine, University of California, Los Angeles, 100 Stein Plaza, Los Angeles, CA, 90095, USA
- INSERM, UMRS1138, Team 17, From Physiopathology of Ocular Diseases to Clinical Development, Cordeliers Research Center, Ophthalmology Department, Cochin Hospital, AP-HP, Université Paris Cité, 75005, Paris, France
| | - Sheyla González
- Department of Ophthalmology, Stein Eye Institute, David Geffen School of Medicine, University of California, Los Angeles, 100 Stein Plaza, Los Angeles, CA, 90095, USA
| | - Sophie X Deng
- Department of Ophthalmology, Stein Eye Institute, David Geffen School of Medicine, University of California, Los Angeles, 100 Stein Plaza, Los Angeles, CA, 90095, USA
- Molecular Biology Institute, University of California, Los Angeles, CA, 90095, USA
| | - Jie J Zheng
- Department of Ophthalmology, Stein Eye Institute, David Geffen School of Medicine, University of California, Los Angeles, 100 Stein Plaza, Los Angeles, CA, 90095, USA.
- Molecular Biology Institute, University of California, Los Angeles, CA, 90095, USA.
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Tran TM, Hou JH. Clinical applications of bioengineered tissue-cellular products for management of corneal diseases. Curr Opin Ophthalmol 2023; 34:311-323. [PMID: 37097181 DOI: 10.1097/icu.0000000000000961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/26/2023]
Abstract
PURPOSE OF REVIEW To discuss bioengineered tissue-cellular products for treatment of corneal diseases that are currently in clinical use. These include tissue-cellular products that have received regulatory approval, are being used off-label in clinical practice, or are in active use in clinical trials. RECENT FINDINGS Due to the global shortage of donor corneal tissue, significant efforts have been made to develop bioengineering tissue-cellular products that can replace or augment the use of cadaveric tissue for corneal transplantation. The development of carrier substrates to support transplantation of cultivated limbal epithelial transplantation (CLET) has been a growing area of research. CLET offers a promising therapeutic alternative to conventional simple limbal epithelial transplantation and keratolimbal allografts for treatment of limbal stem cell deficiency. Engineered tissue matrices and porcine-derived corneas are potential alternatives to human donor tissue in anterior lamellar keratoplasty for corneal ulcers and scars, as well as intrastromal transplants for advanced keratoconus. For endothelial disease, substrate supported cultured endothelial cell grafts, and synthetic barrier devices are promising alternative to traditional endothelial keratoplasties. SUMMARY There has been increasing interest in cellular and acellular bioengineered tissue-cellular and synthetic products for treatment of corneal diseases, and many of these products have already seen clinical use. Industry and academia have important roles in advancing these products to later phase clinical trials and comparing them to conventional allograft approaches. Future development of full thickness donor corneas with cultivated epithelium, endothelium, and stromal keratocytes in a biosynthetic matrix will likely be an important next step in tissue alternatives. Continued progress in this field will be critical for addressing the global disease burden from corneal blindness.
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Affiliation(s)
- Tu M Tran
- Department of Ophthalmology and Visual Neurosciences, University of Minnesota, Minneapolis, Minnesota, USA
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Lee JY, Knight RJ, Deng SX. Future regenerative therapies for corneal disease. Curr Opin Ophthalmol 2023; 34:267-272. [PMID: 36602407 DOI: 10.1097/icu.0000000000000938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
PURPOSE OF REVIEW To highlight the progress and future direction of stem-cell based regenerative therapies for the treatment of corneal disease. RECENT FINDINGS Corneal stem cell-based therapies, such as limbal stem cell transplantation, corneal stromal stem cell transplantation, endothelial stem cell transplantation, and stem cell-derived extracellular vesicles have demonstrated promising results in the laboratory. Although most are still in preclinical development or early phase clinical trials, these stem cell-based therapies hold potential to facilitate tissue regeneration, restore native function, and inhibit pathologic disease processes such as fibrosis, inflammation, and neovascularization. SUMMARY Stem cell-based therapy offers a promising therapeutic option that can circumvent several of the challenges and limitations of traditional surgical treatment. This concise review summarizes the progress in stem-cell based therapies for corneal diseases along with their history, underlying mechanisms, limitations, and future areas for development.
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Affiliation(s)
- John Y Lee
- Stein Eye Institute, Department of Ophthalmology, David Geffen School of Medicine
| | - Robert J Knight
- Stein Eye Institute, Department of Ophthalmology, David Geffen School of Medicine
| | - Sophie X Deng
- Stein Eye Institute, Department of Ophthalmology, David Geffen School of Medicine
- Molecular Biology Institute, University of California, Los Angeles, California, USA
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Masood F, Chang JH, Akbar A, Song A, Hu WY, Azar DT, Rosenblatt MI. Therapeutic Strategies for Restoring Perturbed Corneal Epithelial Homeostasis in Limbal Stem Cell Deficiency: Current Trends and Future Directions. Cells 2022; 11:3247. [PMID: 36291115 PMCID: PMC9600167 DOI: 10.3390/cells11203247] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 10/11/2022] [Accepted: 10/12/2022] [Indexed: 02/03/2023] Open
Abstract
Limbal stem cells constitute an important cell population required for regeneration of the corneal epithelium. If insults to limbal stem cells or their niche are sufficiently severe, a disease known as limbal stem cell deficiency occurs. In the absence of functioning limbal stem cells, vision-compromising conjunctivalization of the corneal epithelium occurs, leading to opacification, inflammation, neovascularization, and chronic scarring. Limbal stem cell transplantation is the standard treatment for unilateral cases of limbal stem cell deficiency, but bilateral cases require allogeneic transplantation. Herein we review the current therapeutic utilization of limbal stem cells. We also describe several limbal stem cell markers that impact their phenotype and function and discuss the possibility of modulating limbal stem cells and other sources of stem cells to facilitate the development of novel therapeutic interventions. We finally consider several hurdles for widespread adoption of these proposed methodologies and discuss how they can be overcome to realize vision-restoring interventions.
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Affiliation(s)
- Faisal Masood
- Department of Ophthalmology and Visual Sciences, Illinois Eye and Ear Infirmary, College of Medicine, University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Jin-Hong Chang
- Department of Ophthalmology and Visual Sciences, Illinois Eye and Ear Infirmary, College of Medicine, University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Anosh Akbar
- Department of Ophthalmology and Visual Sciences, Illinois Eye and Ear Infirmary, College of Medicine, University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Amy Song
- Department of Ophthalmology and Visual Sciences, Illinois Eye and Ear Infirmary, College of Medicine, University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Wen-Yang Hu
- Department of Urology, University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Dimitri T. Azar
- Department of Ophthalmology and Visual Sciences, Illinois Eye and Ear Infirmary, College of Medicine, University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Mark I. Rosenblatt
- Department of Ophthalmology and Visual Sciences, Illinois Eye and Ear Infirmary, College of Medicine, University of Illinois at Chicago, Chicago, IL 60612, USA
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Ruiz M, González S, Bonnet C, Deng SX. Extracellular miR-6723-5p could serve as a biomarker of limbal epithelial stem/progenitor cell population. Biomark Res 2022; 10:36. [PMID: 35642012 PMCID: PMC9153202 DOI: 10.1186/s40364-022-00384-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 05/16/2022] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Dysfunction or loss of limbal stem cells can result in limbal stem cell deficiency (LSCD), a disease that cause corneal opacity, pain, and loss of vision. Cultivated limbal epithelial transplantation (CLET) can be used to restore stem cell niche homeostasis and replenish the progenitor pool. Transplantation has been reported with high success rate, but there is an unmet need of prognostic markers that correlate with clinical outcomes. To date, the progenitor content in the graft is the only parameter that has been retrospectively linked to success. METHODS In this study, we investigate extracellular micro RNAs (miRNAs) associated with stem/progenitor cells in cultivated limbal epithelial cells (cLECs). Using micro RNA sequencing and linear regression modelling, we identify a miRNA signature in cultures containing high proportion of stem/progenitor cells. We then develop a robust RNA extraction workflow from culture media to confirm a positive miRNA correlation with stem/progenitor cell proportion. RESULTS miR-6723-5p is associated with cultures containing high proportion of stem/progenitor cells, and is detected in the basal layer of corneal epithelium. CONCLUSIONS These results indicate that miR-6723-5p could potentially serve as a stem/progenitor cell marker in cLECs.
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Affiliation(s)
- M. Ruiz
- Cornea Division, Stein Eye Institute, University of California, 100 Stein Plaza, Los Angeles, CA 90095 USA
| | - S. González
- Cornea Division, Stein Eye Institute, University of California, 100 Stein Plaza, Los Angeles, CA 90095 USA
| | - C. Bonnet
- Cornea Division, Stein Eye Institute, University of California, 100 Stein Plaza, Los Angeles, CA 90095 USA
- Cornea Department, Paris University, Cochin Hospital, AP-HP, F-75014 Paris, France
| | - S. X. Deng
- Cornea Division, Stein Eye Institute, University of California, 100 Stein Plaza, Los Angeles, CA 90095 USA
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Horiguchi A, Ojima K, Shinchi M, Mayumi Y, Kushibiki T, Katoh S, Takeda M, Iwasaki M, Yoshioka H, Suryaprakash V, Balamurugan M, Senthilkumar R, Abraham SJK. In Vitro Culture Expansion and Characterization of Buccal Mucosal Epithelial Cells for Tissue Engineering Applications in Urethral Stricture After Transportation Using a Thermoreversible Gelation Polymer. Biopreserv Biobank 2021; 20:97-103. [PMID: 34962137 DOI: 10.1089/bio.2021.0079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Introduction: The transportation of tissues from hospitals to clinical laboratories for cell therapy is an essential component of regenerative medicine. Previously, we used laboratory-cultured mucosal cells from buccal epithelium expanded and encapsulated using a scaffold-hybrid approach to the urethral stricture (BEES-HAUS) procedure. In this study, to improve the outcomes, we compared the thermoreversible gelation polymer (TGP) transportation procedure with conventional culture methods, and reported its advantages. Methods: Human buccal mucosal tissues in Phase I of the study were transported in Euro-Collins solution (ECS) and the cells obtained were cultured in two-dimensional (2D) Dulbecco's modified Eagle's medium (DMEM), CnT-Prime epithelial 2D differentiation medium (CnT-PR), and a three-dimensional (3D)-TGP scaffold. In Phase II, tissues were transported in a TGP cocktail and the ECS. The cells were cultured in 2D-DMEM and 3D-TGP, quantified, and characterized by immunohistochemistry. Results: The cells in 3D-TGP culture maintained epithelial morphology in a better manner compared with 2D-DMEM, in which they developed fibroblast-like morphology. The TGP-transported cells grew rapidly. Immunohistochemical analysis results for AE1/AE3, EGFR, integrin-β1, p63, and p75 were intensely positive in 3D-TGP. Conclusion: The TGP-based cocktail used in human buccal tissue transportation yielded cells with better morphology maintenance. The TGP scaffold provides an optimal in vitro environment wherein epithelial cells better maintain their native phenotype compared to those cultured through conventional methods. These results suggest using TGP for the transportation and culture of human buccal tissues for clinical applications. In addition, the use of a TGP-based cocktail for the transport of other tissues for regenerative medicine applications is worth further analysis.
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Affiliation(s)
- Akio Horiguchi
- Department of Urology, National Defence Medical College, Tokorozawa, Saitama, Japan
| | - Kenichiro Ojima
- Department of Urology, National Defence Medical College, Tokorozawa, Saitama, Japan
| | - Masayuki Shinchi
- Department of Urology, National Defence Medical College, Tokorozawa, Saitama, Japan
| | - Yoshine Mayumi
- Department of Urology, National Defence Medical College, Tokorozawa, Saitama, Japan
| | - Toshihiro Kushibiki
- Department of Medical Engineering, National Defence Medical College, Tokorozawa, Saitama, Japan
| | - Shojiro Katoh
- Edogawa Evolutionary Lab of Science (EELS), Edogawa Hospital, Tokyo, Japan.,Department of Orthopedic Surgery, Edogawa Hospital, Edogawa, Tokyo, Japan
| | - Masayuki Takeda
- Department of Urology, Faculty of Medicine, University of Yamanashi, Chuo, Yamanashi, Japan
| | - Masaru Iwasaki
- Center for Advancing Clinical Research (CACR), Faculty of Medicine, University of Yamanashi, Chuo, Yamanashi, Japan
| | | | | | - Madasamy Balamurugan
- Department of Pathology, Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER), Karaikal, Puducherry, India
| | - Rajappa Senthilkumar
- Fujio-Eiji Academic Terrain (FEAT), Nichi-In Center for Regenerative Medicine (NCRM), Chennai, Tamil Nadu, India
| | - Samuel J K Abraham
- Center for Advancing Clinical Research (CACR), Faculty of Medicine, University of Yamanashi, Chuo, Yamanashi, Japan.,Fujio-Eiji Academic Terrain (FEAT), Nichi-In Center for Regenerative Medicine (NCRM), Chennai, Tamil Nadu, India.,R & D Division, JBM Inc., Edogawa, Tokyo, Japan.,Mary-Yoshio Translational Hexagon (MYTH), Nichi-In Center for Regenerative Medicine (NCRM), Chennai, Tamil Nadu, India.,Antony-Xavier Interdisciplinary Scholastics (AXIS), GN Corporation Co. Ltd., Kofu, Yamanashi, Japan
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9
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Bonnet C, González S, Roberts JS, Robertson SYT, Ruiz M, Zheng J, Deng SX. Human limbal epithelial stem cell regulation, bioengineering and function. Prog Retin Eye Res 2021; 85:100956. [PMID: 33676006 PMCID: PMC8428188 DOI: 10.1016/j.preteyeres.2021.100956] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 02/21/2021] [Accepted: 02/26/2021] [Indexed: 12/13/2022]
Abstract
The corneal epithelium is continuously renewed by limbal stem/progenitor cells (LSCs), a cell population harbored in a highly regulated niche located at the limbus. Dysfunction and/or loss of LSCs and their niche cause limbal stem cell deficiency (LSCD), a disease that is marked by invasion of conjunctival epithelium into the cornea and results in failure of epithelial wound healing. Corneal opacity, pain, loss of vision, and blindness are the consequences of LSCD. Successful treatment of LSCD depends on accurate diagnosis and staging of the disease and requires restoration of functional LSCs and their niche. This review highlights the major advances in the identification of potential LSC biomarkers and components of the LSC niche, understanding of LSC regulation, methods and regulatory standards in bioengineering of LSCs, and diagnosis and staging of LSCD. Overall, this review presents key points for researchers and clinicians alike to consider in deepening the understanding of LSC biology and improving LSCD therapies.
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Affiliation(s)
- Clémence Bonnet
- Cornea Division, Stein Eye Institute, University of California, Los Angeles, CA, 90095, USA; Cornea Department, Paris University, Cochin Hospital, AP-HP, F-75014, Paris, France
| | - Sheyla González
- Cornea Division, Stein Eye Institute, University of California, Los Angeles, CA, 90095, USA
| | - JoAnn S Roberts
- Cornea Division, Stein Eye Institute, University of California, Los Angeles, CA, 90095, USA
| | - Sarah Y T Robertson
- Cornea Division, Stein Eye Institute, University of California, Los Angeles, CA, 90095, USA
| | - Maxime Ruiz
- Cornea Division, Stein Eye Institute, University of California, Los Angeles, CA, 90095, USA
| | - Jie Zheng
- Basic Science Division, Stein Eye Institute, University of California, Los Angeles, CA, 90095, USA
| | - Sophie X Deng
- Cornea Division, Stein Eye Institute, University of California, Los Angeles, CA, 90095, USA.
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10
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Wnt6 plays a complex role in maintaining human limbal stem/progenitor cells. Sci Rep 2021; 11:20948. [PMID: 34686698 PMCID: PMC8536737 DOI: 10.1038/s41598-021-00273-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Accepted: 09/24/2021] [Indexed: 01/21/2023] Open
Abstract
The corneal epithelium is consistently regenerated by limbal stem/progenitor cells (LSCs), a very small population of adult stem cells residing in the limbus. Several Wnt ligands, including Wnt6, are preferentially expressed in the limbus. To investigate the role of Wnt6 in regulating proliferation and maintenance of human LSCs in an in vitro LSC expansion setting, we generated NIH-3T3 feeder cells to overexpress different levels of Wnt6. Characterization of LSCs cultured on Wnt6 expressing 3T3 cells showed that high level of Wnt6 increased proliferation of LSCs. Medium and high levels of Wnt6 also increased the percentage of small cells (diameter ≤ 12 µm), a feature of the stem cell population. Additionally, the percentage of cells expressing the differentiation marker K12 was significantly reduced in the presence of medium and high Wnt6 levels. Although Wnt6 is mostly known as a canonical Wnt ligand, our data showed that canonical and non-canonical Wnt signaling pathways were activated in the Wnt6-supplemented LSC cultures, a finding suggesting that interrelationships between both pathways are required for LSC regulation.
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11
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Hernáez-Moya R, González S, Urkaregi A, Pijoan JI, Deng SX, Andollo N. Expansion of Human Limbal Epithelial Stem/Progenitor Cells Using Different Human Sera: A Multivariate Statistical Analysis. Int J Mol Sci 2020; 21:ijms21176132. [PMID: 32854428 PMCID: PMC7503296 DOI: 10.3390/ijms21176132] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 08/23/2020] [Accepted: 08/24/2020] [Indexed: 12/13/2022] Open
Abstract
Transplantation of human cultured limbal epithelial stem/progenitor cells (LESCs) has demonstrated to restore the integrity and functionality of the corneal surface in about 76% of patients with limbal stem cell deficiency. However, there are different protocols for the expansion of LESCs, and many of them use xenogeneic products, being a risk for the patients’ health. We compared the culture of limbal explants on the denuded amniotic membrane in the culture medium—supplemental hormone epithelial medium (SHEM)—supplemented with FBS or two differently produced human sera. Cell morphology, cell size, cell growth rate, and the expression level of differentiation and putative stem cell markers were examined. Several bioactive molecules were quantified in the human sera. In a novel approach, we performed a multivariate statistical analysis of data to investigate the culture factors, such as differently expressed molecules of human sera that specifically influence the cell phenotype. Our results showed that limbal cells cultured with human sera grew faster and contained similar amounts of small-sized cells, higher expression of the protein p63α, and lower of cytokeratin K12 than FBS cultures, thus, maintaining the stem/progenitor phenotype of LESCs. Furthermore, the multivariate analysis provided much data to better understand the obtaining of different cell phenotypes as a consequence of the use of different culture methodologies or different culture components.
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Affiliation(s)
- Raquel Hernáez-Moya
- Department of Cell Biology and Histology, School of Medicine and Nursing, Biocruces Bizkaia Health Research Institute, University of the Basque Country UPV/EHU, 48940 Leioa, Bizkaia, Spain;
| | - Sheyla González
- Cornea Division, Stein Eye Institute, University of California, Los Angeles, CA 90095, USA; (S.G.); (S.X.D.)
| | - Arantza Urkaregi
- Department of Applied Mathematics and Statistics and Operational Research, Biocruces Bizkaia Health Research Institute, University of the Basque Country UPV/EHU, 48940 Leioa, Bizkaia, Spain;
| | - Jose Ignacio Pijoan
- Clinical Epidemiology Unit, Cruces University Hospital, Biocruces Bizkaia Health Research Institute, 48903 Barakaldo, Bizkaia, Spain;
| | - Sophie X. Deng
- Cornea Division, Stein Eye Institute, University of California, Los Angeles, CA 90095, USA; (S.G.); (S.X.D.)
| | - Noelia Andollo
- Department of Cell Biology and Histology, School of Medicine and Nursing, Biocruces Bizkaia Health Research Institute, University of the Basque Country UPV/EHU, 48940 Leioa, Bizkaia, Spain;
- Correspondence: ; Tel.: +34-94-601-3295
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12
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González S, Halabi M, Ju D, Tsai M, Deng SX. Role of Jagged1-mediated Notch Signaling Activation in the Differentiation and Stratification of the Human Limbal Epithelium. Cells 2020; 9:cells9091945. [PMID: 32842657 PMCID: PMC7564045 DOI: 10.3390/cells9091945] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 08/12/2020] [Accepted: 08/21/2020] [Indexed: 12/22/2022] Open
Abstract
The Notch signaling pathway plays a key role in proliferation and differentiation. We investigated the effect of Jagged 1 (Jag1)-mediated Notch signaling activation in the human limbal stem/progenitor cell (LSC) population and the stratification of the limbal epithelium in vitro. After Notch signaling activation, there was a reduction in the amount of the stem/progenitor cell population, epithelial stratification, and expression of proliferation markers. There was also an increase of the corneal epithelial differentiation. In the presence of Jag1, asymmetric divisions were decreased, and the expression pattern of the polarity protein Par3, normally present at the apical-lateral membrane of basal cells, was dispersed in the cells. We propose a mechanism in which Notch activation by Jag1 decreases p63 expression at the basal layer, which in turn reduces stratification by decreasing the number of asymmetric divisions and increases differentiation.
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13
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Zhang C, Mei H, Robertson SYT, Lee HJ, Deng SX, Zheng JJ. A Small-Molecule Wnt Mimic Improves Human Limbal Stem Cell Ex Vivo Expansion. iScience 2020; 23:101075. [PMID: 32361505 PMCID: PMC7200314 DOI: 10.1016/j.isci.2020.101075] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 02/11/2020] [Accepted: 04/14/2020] [Indexed: 12/20/2022] Open
Abstract
Ex vivo cultured limbal stem/progenitor cells is an effective alternative to other surgical treatments for limbal stem cell deficiency, but a standard xenobiotic-free method for culturing the LSCs in vitro needs to be optimized. Because Wnt ligands are required for LSC expansion and preservation in vitro, to create a small-molecule Wnt mimic, we created a consolidated compound by linking a Wnt inhibitor that binds to the Wnt co-receptor Frizzled to a peptide derived from the N-terminal Dickkopf-1 that binds to Lrp (low-density lipoprotein receptor-related protein) 5/6, another Wnt co-receptor. This Wnt mimic not only enhances cellular Wnt signaling activation, but also improves the progenitor cell phenotype of in vitro cultured limbal epithelial cells. As the maintenance of stem cell characteristics in the process of culture expansion is essential for the success of ocular surface reconstruction, the small molecules generated in this study may be helpful in the development of pharmaceutical reagents for treating corneal wounds.
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Affiliation(s)
- Chi Zhang
- Stein Eye Institute, Department of Ophthalmology, David Geffen School of Medicine at UCLA, Los Angeles, CA 90095, USA
| | - Hua Mei
- Department of Ophthalmology, University of North Carolina School of Medicine, Chapel Hill, NC 27517, USA
| | - Sarah Y T Robertson
- Stein Eye Institute, Department of Ophthalmology, David Geffen School of Medicine at UCLA, Los Angeles, CA 90095, USA
| | - Ho-Jin Lee
- Department of Natural Sciences, Southwest Tennessee Community College, Memphis, TN 38134, USA
| | - Sophie X Deng
- Stein Eye Institute, Department of Ophthalmology, David Geffen School of Medicine at UCLA, Los Angeles, CA 90095, USA.
| | - Jie J Zheng
- Stein Eye Institute, Department of Ophthalmology, David Geffen School of Medicine at UCLA, Los Angeles, CA 90095, USA.
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14
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Ekpo P, Inthasin N, Matamnan S, Wongprompitak P, Wattanapanitch M, Boonwong C, Chirapapaisan C, Ngowyutagon P, Uiprasertkul M, Prabhasawat P, Tantibhedhyangkul W. Characterization of limbal explant sites: Optimization of stem cell outgrowth in in vitro culture. PLoS One 2020; 15:e0233075. [PMID: 32407348 PMCID: PMC7224544 DOI: 10.1371/journal.pone.0233075] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Accepted: 04/28/2020] [Indexed: 01/16/2023] Open
Abstract
Simple limbal epithelial transplantation (SLET) and cultivated limbal epithelial transplantation (CLET) are proven techniques for treating limbal stem cell deficiency (LSCD). However, the precise regions that are most suitable for preparing explants for transplantation have not been identified conclusively. Accordingly, this in vitro study aimed at determining ideal sites to be selected for tissue harvest for limbal stem cell culture and transplantation. We evaluated cell outgrowth potential and the expression of stem cell markers in cultures from 48 limbal explants from five cadaveric donors. The limbal explants were generated from the three specific sites: Lcor (located innermost and adjacent to the cornea), Lm (middle limbus), and Lconj (located outermost adjacent to the conjunctiva). We found that explants from the Lconj and Lm sites exhibited higher growth potential than those from the Lcor site. Transcript encoding the stem cell marker and p63 isoform, ΔNp63, was detected in cells from Lm and Lconj explants; expression levels were slightly, though significantly (p-value < 0.05), higher in Lm than in Lconj, although expression of ΔNp63α protein was similar in cells from all explants. Differential expression of ATP-Binding Cassette Subfamily G Member 2 (ABCG2) did not reach statistical significance. Immunohistochemistry by indirect immunofluorescence analysis of limbus tissue revealed that the basal layer in explant tissue from Lconj and Lm contained markedly more stem cells than found in Lcor explant tissue; these findings correlate with a higher capacity for growth. Collectively, our findings suggest that explants from the Lconj and Lm sites should be selected for limbal cell expansion for both CLET and SLET procedures. These new insights may guide surgeons toward specific limbal sites that are most suitable for stem cell culture and transplantation and may ultimately improve treatment outcomes in the patients with LSCD.
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Affiliation(s)
- Pattama Ekpo
- Department of Immunology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
- Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
- * E-mail: (PE); (WT)
| | - Naharuthai Inthasin
- Department of Immunology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Sutthicha Matamnan
- Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Patimaporn Wongprompitak
- Department of Immunology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Methichit Wattanapanitch
- Research Department, Siriraj Center for Regenerative Medicine (SiCRM), Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Chawikan Boonwong
- Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Chareenun Chirapapaisan
- Department of Ophthalmology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Panotsom Ngowyutagon
- Department of Ophthalmology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Mongkol Uiprasertkul
- Department of Pathology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Pinnita Prabhasawat
- Department of Ophthalmology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Wiwit Tantibhedhyangkul
- Department of Immunology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
- * E-mail: (PE); (WT)
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15
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Nieto-Nicolau N, Martín-Antonio B, Müller-Sánchez C, Casaroli-Marano RP. In vitro potential of human mesenchymal stem cells for corneal epithelial regeneration. Regen Med 2020; 15:1409-1426. [PMID: 32352350 DOI: 10.2217/rme-2019-0067] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Aim: To determine the potential of mesenchymal stem cells (MSC) for corneal epithelial regeneration in vitro. Materials & methods: Bone marrow MSC (BM-MSC) and adipose tissue MSC were analyzed for corneal epithelial and mesenchymal markers, using limbal stem cells and corneal cells as controls. MSC with better potential were cultured with specific mediums for epithelial induction. Transepithelial electric resistance and wound healing assay with human corneal epithelial cells were performed. Results: BM-MSC showed better potential, increased corneal markers, and higher transepithelial electric resistance values when induced with limbal epithelial culture medium. Induced BM-MSC promoted better wound healing of human corneal epithelial cells by paracrine secretion. Conclusion: BM-MSC has potential for corneal epithelial induction in a protocol compatible with human application.
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Affiliation(s)
| | | | | | - Ricardo P Casaroli-Marano
- Barcelona Tissue Bank, Banc de Sang I Teixits (BST), Barcelona, Spain.,Department of Surgery, School of Medicine & Hospital Clinic de Barcelona, University of Barcelona, Barcelona, Spain.,Institute of Biomedical Research Sant Pau (IIB-Sant Pau), Barcelona, Spain
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16
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Tomasello L, Coppola A, Pitrone M, Failla V, Cillino S, Pizzolanti G, Giordano C. PFN1 and integrin-β1/mTOR axis involvement in cornea differentiation of fibroblast limbal stem cells. J Cell Mol Med 2019; 23:7210-7221. [PMID: 31513338 PMCID: PMC6815913 DOI: 10.1111/jcmm.14438] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Revised: 04/26/2019] [Accepted: 05/15/2019] [Indexed: 12/14/2022] Open
Abstract
Ex vivo limbal stem cell transplantation is the main therapeutic approach to address a complete and functional re-epithelialization in corneal blindness, the second most common eye disorder. Although important key points were defined, the molecular mechanisms involved in the epithelial phenotype determination are unclear. Our previous studies have demonstrated the pluripotency and immune-modulatory of fibroblast limbal stem cells (f-LSCs), isolated from the corneal limbus. We defined a proteomic profile especially enriched in wound healing and cytoskeleton-remodelling proteins, including Profilin-1 (PFN1). In this study we postulate that pfn-1 knock down promotes epithelial lineage by inhibiting the integrin-β1(CD29)/mTOR pathway and subsequent NANOG down-expression. We showed that it is possible modulate pfn1 expression levels by treating f-LSCs with Resveratrol (RSV), a natural compound: pfn1 decline is accompanied with up-regulation of the specific differentiation epithelial genes pax6 (paired-box 6), sox17 (sex determining region Y-box 17) and ΔNp63-α (p63 splice variant), consistent with drop-down of the principle stem gene levels. These results contribute to understand the molecular biology of corneal epithelium development and suggest that pfn1 is a potential molecular target for the treatment of corneal blindness based on epithelial cell dysfunction.
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Affiliation(s)
- Laura Tomasello
- Laboratory of Regenerative Medicine "Aldo Galluzzo", Section of Endocrinology, Diabetology and Metabolism, Department of Promozione della Salute, Materno-Infantile, di Medicina Interna e Specialistica di Eccellenza "G. D'Alessandro" (ProMISE), University of Palermo, Palermo, Italy
| | - Antonina Coppola
- Laboratory of Regenerative Medicine "Aldo Galluzzo", Section of Endocrinology, Diabetology and Metabolism, Department of Promozione della Salute, Materno-Infantile, di Medicina Interna e Specialistica di Eccellenza "G. D'Alessandro" (ProMISE), University of Palermo, Palermo, Italy
| | - Maria Pitrone
- Laboratory of Regenerative Medicine "Aldo Galluzzo", Section of Endocrinology, Diabetology and Metabolism, Department of Promozione della Salute, Materno-Infantile, di Medicina Interna e Specialistica di Eccellenza "G. D'Alessandro" (ProMISE), University of Palermo, Palermo, Italy
| | - Valentina Failla
- Department of Ophthalmology, University of Palermo, Palermo, Italy
| | | | - Giuseppe Pizzolanti
- Laboratory of Regenerative Medicine "Aldo Galluzzo", Section of Endocrinology, Diabetology and Metabolism, Department of Promozione della Salute, Materno-Infantile, di Medicina Interna e Specialistica di Eccellenza "G. D'Alessandro" (ProMISE), University of Palermo, Palermo, Italy
| | - Carla Giordano
- Laboratory of Regenerative Medicine "Aldo Galluzzo", Section of Endocrinology, Diabetology and Metabolism, Department of Promozione della Salute, Materno-Infantile, di Medicina Interna e Specialistica di Eccellenza "G. D'Alessandro" (ProMISE), University of Palermo, Palermo, Italy
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17
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Notch Inhibition Prevents Differentiation of Human Limbal Stem/Progenitor Cells in vitro. Sci Rep 2019; 9:10373. [PMID: 31316119 PMCID: PMC6637172 DOI: 10.1038/s41598-019-46793-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Accepted: 06/06/2019] [Indexed: 12/26/2022] Open
Abstract
Notch signaling has been shown to regulate the homeostasis and wound healing of the corneal epithelium. We investigated the effect of Notch inhibition in the human limbal stem/progenitor cells (LSCs) in vitro by using small molecules. Treatment of the LSCs with DAPT and SAHM1 reduced the proliferation rate and maintained the undifferentiated state of the LSCs in a concentration dependent manner. Stratification and differentiation of the corneal epithelium were not reduced after Notch inhibition, indicating that the function of the corneal basal cells is retained. Our findings suggest that Notch signaling plays a role in the proliferation and maintenance of LSCs.
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18
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Fiorica C, Tomasello L, Palumbo FS, Coppola A, Pitarresi G, Pizzolanti G, Giordano C, Giammona G. Production of a Double-Layer Scaffold for the "On-Demand" Release of Fibroblast-like Limbal Stem Cells. ACS APPLIED MATERIALS & INTERFACES 2019; 11:22206-22217. [PMID: 31144805 DOI: 10.1021/acsami.9b06757] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The production and characterization of a double-layer scaffold, to be used as a system for the "on-demand" release of corneal limbal stem cells, are reported here. The devices used in the clinics and proposed so far in the scientific literature, for the release of corneal stem cells in the treatment of limbal stem cell deficiency, cannot control the in vivo space-time release of cells as the biomaterial of which they are composed is devoid of the stimuli-responsive feature. Our approach was to produce a scaffold composed of two different polymeric layers that give the device the appropriate mechanical properties to be placed on the ocular surface and the possibility of releasing the stem cells following a noninvasive and cell-friendly treatment. This device consists of an electrospun microfibrillar scaffold of poly-l-lactic acid coated by a polymeric film based on an amphiphilic derivative of hyaluronic acid sensitive to the ionic strength of the external medium and to the presence of a complexing agent. The latter represents the "sacrificial" cell containing layer of the scaffold that can be dissolved "on demand" by the treatment with a solution of cyclodextrins. The rapid removal of the external polymeric film from the device is exploited to control the space-time release of the cells. In vitro and ex vivo experiments showed that fibroblast-like limbal stem cells cultured on the scaffold without the use of the feeder layer maintained their characteristics of stem cells and can be released "on demand" on the culture well coated with Matrigel or on the decellularized bovine cornea, respectively.
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Affiliation(s)
- Calogero Fiorica
- Department of "Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche" (STEBICEF) , University of Palermo , Via Archirafi 32 , 90123 Palermo , Italy
| | - Laura Tomasello
- Department of "Promozione Della Salute Materno Infantile, di Medicina Interna e Specialistica di Eccellenza" "G. D'Alessandro" (ProMise) , University of Palermo , Piazza Delle Cliniche 2 , 90127 Palermo , Italy
| | - Fabio S Palumbo
- Department of "Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche" (STEBICEF) , University of Palermo , Via Archirafi 32 , 90123 Palermo , Italy
| | - Antonina Coppola
- Department of "Promozione Della Salute Materno Infantile, di Medicina Interna e Specialistica di Eccellenza" "G. D'Alessandro" (ProMise) , University of Palermo , Piazza Delle Cliniche 2 , 90127 Palermo , Italy
| | - Giovanna Pitarresi
- Department of "Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche" (STEBICEF) , University of Palermo , Via Archirafi 32 , 90123 Palermo , Italy
| | - Giuseppe Pizzolanti
- Department of "Promozione Della Salute Materno Infantile, di Medicina Interna e Specialistica di Eccellenza" "G. D'Alessandro" (ProMise) , University of Palermo , Piazza Delle Cliniche 2 , 90127 Palermo , Italy
| | - Carla Giordano
- Department of "Promozione Della Salute Materno Infantile, di Medicina Interna e Specialistica di Eccellenza" "G. D'Alessandro" (ProMise) , University of Palermo , Piazza Delle Cliniche 2 , 90127 Palermo , Italy
| | - Gaetano Giammona
- Department of "Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche" (STEBICEF) , University of Palermo , Via Archirafi 32 , 90123 Palermo , Italy
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19
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Haagdorens M, Cėpla V, Melsbach E, Koivusalo L, Skottman H, Griffith M, Valiokas R, Zakaria N, Pintelon I, Tassignon MJ. In Vitro Cultivation of Limbal Epithelial Stem Cells on Surface-Modified Crosslinked Collagen Scaffolds. Stem Cells Int 2019; 2019:7867613. [PMID: 31065280 PMCID: PMC6466865 DOI: 10.1155/2019/7867613] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Accepted: 12/31/2018] [Indexed: 12/13/2022] Open
Abstract
PURPOSE To investigate the efficacy of recombinant human collagen type I (RHC I) and collagen-like peptide (CLP) hydrogels as alternative carrier substrates for the cultivation of limbal epithelial stem cells (LESC) under xeno-free culture conditions. METHODS Human LESC were cultivated on seven different collagen-derived hydrogels: (1) unmodified RHC I, (2) fibronectin-patterned RHC I, (3) carbodiimide-crosslinked CLP (CLP-12 EDC), (4) DMTMM- (4-(4,6-dimethoxy-1,3,5-triazin-2-yl)-4-methyl-morpholinium-) crosslinked CLP (CLP-12), (5) fibronectin-patterned CLP-12, (6) "3D limbal niche-mimicking" CLP-12, and (7) DMTMM-crosslinked CLP made from higher CLP concentration solution. Cell proliferation, cell morphology, and expression of LESC markers were analyzed. All data were compared to cultures on human amniotic membrane (HAM). RESULTS Human LESC were successfully cultivated on six out of seven hydrogel formulations, with primary cell cultures on CLP-12 EDC being deemed unsuccessful since the area of outgrowth did not meet quality standards (i.e., inconsistence in outgrowth and confluence) after 14 days of culture. Upon confluence, primary LESC showed high expression of the stem cell marker ΔNp63, proliferation marker cytokeratin (KRT) 14, adhesion markers integrin-β4 and E-cadherin, and LESC-specific extracellular matrix proteins laminin-α1, and collagen type IV. Cells showed low expression of differentiation markers KRT3 and desmoglein 3 (DSG3). Significantly higher gene expression of KRT3 was observed for cells cultured on CLP hydrogels compared to RHC I and HAM. Surface patterning of hydrogels influenced the pattern of proliferation but had no significant effect on the phenotype or genotype of cultures. Overall, the performance of RHC I and DMTMM-crosslinked CLP hydrogels was equivalent to that of HAM. CONCLUSION RHC I and DMTMM-crosslinked CLP hydrogels, irrespective of surface modification, support successful cultivation of primary human LESC using a xeno-free cultivation protocol. The regenerated epithelium maintained similar characteristics to HAM-based cultures.
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Affiliation(s)
- Michel Haagdorens
- Faculty of Medicine and Health Sciences, Department of Ophthalmology, Visual Optics and Visual Rehabilitation, University of Antwerp, Campus Drie Eiken, T building, T4-Ophthalmology, Universiteitsplein 1, 2610 Antwerp, Belgium
- Department of Ophthalmology, Antwerp University Hospital, Wilrijkstraat 10, 2650 Antwerp, Belgium
| | - Vytautas Cėpla
- Department of Nanoengineering, Center for Physical Sciences and Technology, Savanorių 231, 02300 Vilnius, Lithuania
- Ferentis UAB, Savanorių 235, 02300 Vilnius, Lithuania
| | - Eline Melsbach
- Department of Ophthalmology, Antwerp University Hospital, Wilrijkstraat 10, 2650 Antwerp, Belgium
- Center for Cell Therapy and Regenerative Medicine, Antwerp University Hospital, CCRG-Oogheelkunde, Wilrijkstraat 10, 2650 Edegem, Belgium
| | - Laura Koivusalo
- Faculty of Medicine and Health Technology, Tampere University, Arvo Ylpön katu 34, 33014, Finland
| | - Heli Skottman
- Faculty of Medicine and Health Technology, Tampere University, Arvo Ylpön katu 34, 33014, Finland
| | - May Griffith
- Maisonneuve-Rosemont Hospital Research Centre and Department of Ophthalmology, University of Montreal, Montreal, QC, Canada H1T 4B3
| | - Ramūnas Valiokas
- Department of Nanoengineering, Center for Physical Sciences and Technology, Savanorių 231, 02300 Vilnius, Lithuania
- Ferentis UAB, Savanorių 235, 02300 Vilnius, Lithuania
| | - Nadia Zakaria
- Faculty of Medicine and Health Sciences, Department of Ophthalmology, Visual Optics and Visual Rehabilitation, University of Antwerp, Campus Drie Eiken, T building, T4-Ophthalmology, Universiteitsplein 1, 2610 Antwerp, Belgium
- Department of Ophthalmology, Antwerp University Hospital, Wilrijkstraat 10, 2650 Antwerp, Belgium
- Center for Cell Therapy and Regenerative Medicine, Antwerp University Hospital, CCRG-Oogheelkunde, Wilrijkstraat 10, 2650 Edegem, Belgium
| | - Isabel Pintelon
- Laboratory of Cell Biology and Histology, Antwerp University, Campus Drie Eiken, T building, T1-Veterinary Sciences, Universiteitsplein 1, 2610 Antwerp, Belgium
| | - Marie-José Tassignon
- Faculty of Medicine and Health Sciences, Department of Ophthalmology, Visual Optics and Visual Rehabilitation, University of Antwerp, Campus Drie Eiken, T building, T4-Ophthalmology, Universiteitsplein 1, 2610 Antwerp, Belgium
- Department of Ophthalmology, Antwerp University Hospital, Wilrijkstraat 10, 2650 Antwerp, Belgium
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20
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DERELI CAN GAMZE, AKDERE ÖZGEEKIN, CAN MEHMETEROL, GÜMÜŞDERELIOĞLU MENEMŞE. A simple and efficient method for cultivation of limbal explant stem cells with clinically safe potential. Cytotherapy 2019; 21:83-95. [DOI: 10.1016/j.jcyt.2018.11.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Revised: 11/04/2018] [Accepted: 11/08/2018] [Indexed: 11/26/2022]
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21
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Lee HJ, Nam SM, Choi SK, Seo KY, Kim HO, Chung SH. Comparative study of substrate free and amniotic membrane scaffolds for cultivation of limbal epithelial sheet. Sci Rep 2018; 8:14628. [PMID: 30279555 PMCID: PMC6168574 DOI: 10.1038/s41598-018-32914-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Accepted: 09/18/2018] [Indexed: 11/30/2022] Open
Abstract
Transplantation of cultivated limbal epithelial transplantation has been proven to restore the corneal surface in limbal stem cell deficiency (LSCD). Here we comparatively investigated the optimized conditions and the efficiency of limbal epithelial sheet growth in three media conditions as well as with substrate free (transwell), human amniotic membrane (HAM) sutured onto transwell inserts (HAMTW), and HAM slide scaffold (HAMS). Outcomes evaluated were outgrowth sheet size from limbal explants, expression of stem/progenitor cell markers p63α, ABCG2 and CK15, and colony formation efficiency (CFE). Additionally, limbal epithelial sheets on HAMS were transplanted into corneas of LSCD rabbit models. Limbal epithelial sheets with 5% human AB serum showed the greatest increase in ABCG2 efflux activity (JC1low), p63α expression, and CFE compared in both conditions without HAM and with HAM, respectively. The outgrowth sheet size, cell yield, and Ki67 expression were increased in limbal epithelial sheets on HAMS compared to transwell and HAMTW. ABCG2 efflux activity, p63α and CK15 expressions, and CFE were also increased in limbal epithelial sheets on HAMS as well. In corneas of transplanted rabbit LSCD models, p63α expressions were noted in the basal layers and CK12 expressions were observed in superficial layers. Cultivation of limbal epithelial sheet on HAMS with xeno-free medium enhances the growth and stemness of limbal epithelial sheets.
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Affiliation(s)
- Hyun Jung Lee
- Department of Biochemical Engineering, Seoil University, Seoul, Korea
| | - Sang Min Nam
- Department of Ophthalmology, CHA Bundang Medical Center, CHA University, Seongnam, Korea
| | - Sae Kyung Choi
- Department of Obstetrics and Gynecology, Incheon St. Mary's Hospital, Incheon, Korea
| | - Kyoung Yul Seo
- Department of Ophthalmology, Institute of Vision Research, Yonsei University College of Medicine, Seoul, Korea
| | - Hyun Ok Kim
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - So-Hyang Chung
- Department of Ophthalmology and Visual Science, Catholic Institute of Visual Science, College of Medicine, The Catholic University of Korea, Seoul, Korea.
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22
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Dereli Can G, Akdere ÖE, Can ME, Aydın B, Cagil N, Gümüşderelioğlu M. A completely human-derived biomaterial mimicking limbal niche: Platelet-rich fibrin gel. Exp Eye Res 2018; 173:1-12. [PMID: 29678720 DOI: 10.1016/j.exer.2018.04.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Revised: 04/12/2018] [Accepted: 04/17/2018] [Indexed: 01/01/2023]
Abstract
Platelet-rich fibrin (PRF) is a natural biomaterial and has excellent biochemical and physical properties with a history of proven biocompatibility in the field of tissue engineering and regenerative medicine. Recent reports of fibrin-based matrices have offered new opportunities to apply PRF as a supplement for in vitro cell culture. Here, custom-modified human-derived PRF (HPRF) was produced via different centrifugation protocols, then, characterized by morphologically and chemically and utilized as a substrate and as a conditioned medium for limbal explant culture for the first time. It was found that the HPRF released significantly higher levels of growth factors which are essential for epithelial cell growth. The enhanced physicochemical properties of the HPRF were also proven in the limbal explant cultures in terms of cell growth, migration, viability, and stemness in comparison with the conventional limbal explant culture on human-derived amniotic membrane. Consequently, HPRF hydrogels are appealing natural biomaterials for the purpose of mimicking limbal niche and the discovery elucidates this new, xeno-chemical-free, completely human-derived biomaterial can be utilized as a supplement to promote epithelial cell behaviour in vitro.
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Affiliation(s)
- Gamze Dereli Can
- Department of Ophthalmology, Bursa Yüksek İhtisas Training and Research Hospital, Bursa, Turkey; Institute of Science and Engineering, Bioengineering, Hacettepe University, Ankara, Turkey.
| | - Özge Ekin Akdere
- Institute of Science and Engineering, Bioengineering, Hacettepe University, Ankara, Turkey
| | - Mehmet Erol Can
- Department of Ophthalmology, Bursa Yüksek İhtisas Training and Research Hospital, Bursa, Turkey
| | - Bahri Aydın
- Department of Ophthalmology, Gazi University Faculty of Medicine, Ankara, Turkey
| | - Nurullah Cagil
- Department of Ophthalmology, Yıldırım Beyazıt University Faculty of Medicine, Ankara Atatürk Training and Research Hospital, Ankara, Turkey
| | - Menemşe Gümüşderelioğlu
- Institute of Science and Engineering, Bioengineering, Hacettepe University, Ankara, Turkey; Faculty of Engineering, Chemical Engineering Department, Hacettepe University, Ankara, Turkey
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23
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Kamarudin TA, Bojic S, Collin J, Yu M, Alharthi S, Buck H, Shortt A, Armstrong L, Figueiredo FC, Lako M. Differences in the Activity of Endogenous Bone Morphogenetic Protein Signaling Impact on the Ability of Induced Pluripotent Stem Cells to Differentiate to Corneal Epithelial-Like Cells. Stem Cells 2017; 36:337-348. [PMID: 29226476 PMCID: PMC5839253 DOI: 10.1002/stem.2750] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Revised: 10/27/2017] [Accepted: 11/15/2017] [Indexed: 12/13/2022]
Abstract
Cornea is a clear outermost layer of the eye which enables transmission of light onto the retina. The transparent corneal epithelium is regenerated by limbal stem cells (LSCs), whose loss/dysfunction results in LSCs deficiency (LSCD). Ex vivo expansion of autologous LSCs obtained from patient's healthy eye followed by transplantation onto the LSCs damaged/deficient eye, has provided a successful treatment for unilateral LSCD. However, this is not applicable to patient with total bilateral LSCD, where LSCs are lost/damaged from both eyes. We investigated the potential of human induced pluripotent stem cell (hiPSC) to differentiate into corneal epithelial‐like cells as a source of autologous stem cell treatment for patients with total bilateral LSCD. Our study showed that combined addition of bone morphogenetic protein 4 (BMP4), all trans‐retinoic acid and epidermal growth factor for the first 9 days of differentiation followed by cell‐replating on collagen‐IV‐coated surfaces with a corneal‐specific‐epithelial cell media for an additional 11 days, resulted in step wise differentiation of human embryonic stem cells (hESC) to corneal epithelial progenitors and mature corneal epithelial‐like cells. We observed differences in the ability of hiPSC lines to undergo differentiation to corneal epithelial‐like cells which were dependent on the level of endogenous BMP signaling and could be restored via the activation of this signaling pathway by a specific transforming growth factor β inhibitor (SB431542). Together our data reveal a differential ability of hiPSC lines to generate corneal epithelial cells which is underlined by the activity of endogenous BMP signaling pathway. Stem Cells2018;36:337–348
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Affiliation(s)
- Taty Anna Kamarudin
- Institute of Genetic Medicine, International Centre for Life, Newcastle University, Central Parkway, Newcastle upon Tyne, United Kingdom
| | - Sanja Bojic
- Institute of Genetic Medicine, International Centre for Life, Newcastle University, Central Parkway, Newcastle upon Tyne, United Kingdom
| | - Joseph Collin
- Institute of Genetic Medicine, International Centre for Life, Newcastle University, Central Parkway, Newcastle upon Tyne, United Kingdom
| | - Min Yu
- Institute of Genetic Medicine, International Centre for Life, Newcastle University, Central Parkway, Newcastle upon Tyne, United Kingdom
| | - Sameer Alharthi
- Princess Al Jawhara Al-Brahim Center of Excellence in Research of Hereditary Disorders, King Abdulaziz University, Saudi Arabia
| | - Harley Buck
- UCL Institute of Immunology and Transplantation, Royal Free Campus, London, United Kingdom
| | - Alex Shortt
- UCL Institute of Immunology and Transplantation, Royal Free Campus, London, United Kingdom
| | - Lyle Armstrong
- Institute of Genetic Medicine, International Centre for Life, Newcastle University, Central Parkway, Newcastle upon Tyne, United Kingdom
| | - Francisco C Figueiredo
- Institute of Genetic Medicine, International Centre for Life, Newcastle University, Central Parkway, Newcastle upon Tyne, United Kingdom.,Department of Ophthalmology, Royal Victoria Infirmary, Queen Victoria Road, Newcastle upon Tyne, United Kingdom
| | - Majlinda Lako
- Institute of Genetic Medicine, International Centre for Life, Newcastle University, Central Parkway, Newcastle upon Tyne, United Kingdom
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24
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Ex Vivo Expansion of Human Limbal Epithelial Cells Using Human Placenta-Derived and Umbilical Cord-Derived Mesenchymal Stem Cells. Stem Cells Int 2017; 2017:4206187. [PMID: 28894469 PMCID: PMC5574311 DOI: 10.1155/2017/4206187] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Accepted: 07/04/2017] [Indexed: 12/29/2022] Open
Abstract
Ex vivo culture of human limbal epithelial cells (LECs) is used to treat limbal stem cell (LSC) deficiency, a vision loss condition, and suitable culture systems using feeder cells or serum without animal elements have been developed. This study evaluated the use of human umbilical cord or placenta mesenchymal stem cells (C-MSCs or P-MSCs, resp.) as feeder cells in an animal/serum-free coculture system with human LECs. C-/P-MSCs stimulated LEC colony formation of the stem cell markers (p63, ABCG2) and secreted known LEC clonal growth factors (keratinocyte growth factor, β-nerve growth factor). Transforming growth factor-β-induced protein (TGFBIp), an extracellular matrix (ECM) protein, was produced by C-/P-MSCs and resulted in an increase in p63+ ABCG2+ LEC colonies. TGFBIp-activated integrin signaling molecules (FAK, Src, and ERK) were expressed in LECs, and TGFBIp-induced LEC proliferation was effectively blocked by a FAK inhibitor. In conclusion, C-/P-MSCs enhanced LEC culture by increasing growth of the LSC population by secreting growth factors and the ECM protein TGFBIp, which is suggested to be a novel factor for promoting the growth of LECs in culture. C-/P-MSCs may be useful for the generation of animal-free culture systems for the treatment of LSC deficiency.
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