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Petrovski G, Lytvynchuk L, Ebbert A, Studenovska H, Nagymihály R, Josifovska N, Rais D, Popelka Š, Tichotová L, Nemesh Y, Cížková J, Juhásová J, Juhás Š, Jendelová P, Franeková J, Kozak I, Erceg S, Stranák Z, Müller B, Ellederová Z, Motlík J, Stieger K, Ardanand T. Subretinal implantation of human primary RPE cells cultured on nanofibrous membranes in minipigs. Acta Ophthalmol 2022. [DOI: 10.1111/j.1755-3768.2022.15519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Goran Petrovski
- Center for Eye Research, Department of Ophthalmology, Oslo University Hospital and Institute for Clinical Medicine, Faculty of Medicine University of Oslo Oslo Norway
| | - Lyubomyr Lytvynchuk
- Center for Eye Research, Department of Ophthalmology, Oslo University Hospital and Institute for Clinical Medicine, Faculty of Medicine University of Oslo Oslo Norway
| | - Annabelle Ebbert
- Center for Eye Research, Department of Ophthalmology, Oslo University Hospital and Institute for Clinical Medicine, Faculty of Medicine University of Oslo Oslo Norway
| | - Hana Studenovska
- Center for Eye Research, Department of Ophthalmology, Oslo University Hospital and Institute for Clinical Medicine, Faculty of Medicine University of Oslo Oslo Norway
| | - Richárd Nagymihály
- Center for Eye Research, Department of Ophthalmology, Oslo University Hospital and Institute for Clinical Medicine, Faculty of Medicine University of Oslo Oslo Norway
| | - Natasha Josifovska
- Center for Eye Research, Department of Ophthalmology, Oslo University Hospital and Institute for Clinical Medicine, Faculty of Medicine University of Oslo Oslo Norway
| | - David Rais
- Center for Eye Research, Department of Ophthalmology, Oslo University Hospital and Institute for Clinical Medicine, Faculty of Medicine University of Oslo Oslo Norway
| | - Štepán Popelka
- Center for Eye Research, Department of Ophthalmology, Oslo University Hospital and Institute for Clinical Medicine, Faculty of Medicine University of Oslo Oslo Norway
| | - Lucie Tichotová
- Center for Eye Research, Department of Ophthalmology, Oslo University Hospital and Institute for Clinical Medicine, Faculty of Medicine University of Oslo Oslo Norway
| | - Yaroslav Nemesh
- Center for Eye Research, Department of Ophthalmology, Oslo University Hospital and Institute for Clinical Medicine, Faculty of Medicine University of Oslo Oslo Norway
| | - Jana Cížková
- Center for Eye Research, Department of Ophthalmology, Oslo University Hospital and Institute for Clinical Medicine, Faculty of Medicine University of Oslo Oslo Norway
| | - Jana Juhásová
- Center for Eye Research, Department of Ophthalmology, Oslo University Hospital and Institute for Clinical Medicine, Faculty of Medicine University of Oslo Oslo Norway
| | - Štefan Juhás
- Center for Eye Research, Department of Ophthalmology, Oslo University Hospital and Institute for Clinical Medicine, Faculty of Medicine University of Oslo Oslo Norway
| | - Pavla Jendelová
- Center for Eye Research, Department of Ophthalmology, Oslo University Hospital and Institute for Clinical Medicine, Faculty of Medicine University of Oslo Oslo Norway
| | - Janka Franeková
- Center for Eye Research, Department of Ophthalmology, Oslo University Hospital and Institute for Clinical Medicine, Faculty of Medicine University of Oslo Oslo Norway
| | - Igor Kozak
- Center for Eye Research, Department of Ophthalmology, Oslo University Hospital and Institute for Clinical Medicine, Faculty of Medicine University of Oslo Oslo Norway
| | - Slaven Erceg
- Center for Eye Research, Department of Ophthalmology, Oslo University Hospital and Institute for Clinical Medicine, Faculty of Medicine University of Oslo Oslo Norway
| | - Zbynek Stranák
- Center for Eye Research, Department of Ophthalmology, Oslo University Hospital and Institute for Clinical Medicine, Faculty of Medicine University of Oslo Oslo Norway
| | - Brigitte Müller
- Center for Eye Research, Department of Ophthalmology, Oslo University Hospital and Institute for Clinical Medicine, Faculty of Medicine University of Oslo Oslo Norway
| | - Zdenka Ellederová
- Center for Eye Research, Department of Ophthalmology, Oslo University Hospital and Institute for Clinical Medicine, Faculty of Medicine University of Oslo Oslo Norway
| | - Jan Motlík
- Center for Eye Research, Department of Ophthalmology, Oslo University Hospital and Institute for Clinical Medicine, Faculty of Medicine University of Oslo Oslo Norway
| | - Knut Stieger
- Center for Eye Research, Department of Ophthalmology, Oslo University Hospital and Institute for Clinical Medicine, Faculty of Medicine University of Oslo Oslo Norway
| | - Taras Ardanand
- Center for Eye Research, Department of Ophthalmology, Oslo University Hospital and Institute for Clinical Medicine, Faculty of Medicine University of Oslo Oslo Norway
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Lytvynchuk L, Stranak Z, Studenovska H, Rais D, Popelka Š, Tichotová L, Nemesh Y, Kolesnikova A, Nyshchuk R, Brymová A, Ellederová Z, Čížková J, Juhásová J, Juhás Š, Jendelová P, Nagymihály R, Kozak I, Erceg S, Binder S, Müller B, Stieger K, Motlik J, Petrovski G, Ardan T. Subretinal Implantation of RPE on a Carrier in Minipigs: Guidelines for Preoperative Preparations, Surgical Techniques, and Postoperative Care. J Vis Exp 2022. [DOI: 10.3791/63505] [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] [Indexed: 11/13/2022] Open
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Müllertz O, Hedengran A, Mouhammad ZA, Freiberg J, Nagymihály R, Jacobsen J, Larsen SW, Bair J, Utheim T, Dartt DA, Heegaard S, Petrovski G, Kolko M. Impact of benzalkonium chloride-preserved and preservative-free latanoprost eye drops on cultured human conjunctival goblet cells upon acute exposure and differences in physicochemical properties of the eye drops. BMJ Open Ophthalmol 2022; 6:e000892. [PMID: 34993350 PMCID: PMC8689192 DOI: 10.1136/bmjophth-2021-000892] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Accepted: 11/30/2021] [Indexed: 01/09/2023] Open
Abstract
Objective To investigate the short-term impact on human conjunctival goblet cell (GC) survival and mucin release of acute exposure to benzalkonium chloride (BAK) preserved and preservative-free (PF) 0.005% (w/v) latanoprost (LT) eye drops, and to compare the eye drops’ physicochemical properties. Methods and analysis Primary GC cultures were established from human conjunctival donor tissue. The impact of eye drops on GC survival was assessed using a lactate dehydrogenase assay. Mucin release was evaluated through mucin-specific immunostaining. pH value, osmolality, drop mass and surface tension for all LT eye drops were measured. Results After application with PF-LT for 30 min (min), the GC survival was maintained compared with control (p=0.9941), while all BAK-LT eye drops reduced survival with approximately 30% (p<0.02). Following application with PF-LT for 30 min, mucin was found around the GC nucleus, as seen in the vehicle control, indicating no secretion. In contrast, BAK-LT caused diffuse staining of mucin, similar to the secretagogue histamine, indicating stimulation of secretion. The pH value of the BAK-LT and PF-LT eye drops were 6.0–6.9 and 6.8, respectively. The osmolality was 258–288 mOsm/kg for the BAK-LT eye drops and 276 for PF-LT eye drops. The mean drop mass was 26–31 mg for the BAK-LT eye drops and 30 mg for PF-LT. The surface tension was lower for all BAK-LT eye drops (31.1–32.1 mN/m) compared with PF-LT (42 mN/m). Conclusion PF-LT compared with various branded and generic LT preparations containing BAK are less cytotoxic when applied to cultured GCs.
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Affiliation(s)
- Olivia Müllertz
- Department of Drug Design and Pharmacology, University of Copenhagen, Copenhagen, Denmark
| | - Anne Hedengran
- Department of Drug Design and Pharmacology, University of Copenhagen, Copenhagen, Denmark.,Department of Ophthalmology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Zaynab Ahmad Mouhammad
- Department of Drug Design and Pharmacology, University of Copenhagen, Copenhagen, Denmark
| | - Josefine Freiberg
- Department of Drug Design and Pharmacology, University of Copenhagen, Copenhagen, Denmark
| | - Richárd Nagymihály
- Center for Eye Research, Department of Ophthalmology, Oslo University Hospital and Institute for Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Jette Jacobsen
- Department of Pharmacy, University of Copenhagen, Copenhagen, Denmark
| | - Susan Weng Larsen
- Department of Pharmacy, University of Copenhagen, Copenhagen, Denmark
| | - Jeffrey Bair
- Massachusetts Eye and Ear Infirmary, Department of Ophthalmology, Harvard Medical School, Schepens Eye Research Institute, Boston, Massachusetts, USA
| | - Tor Utheim
- Department of Medical Biochemistry, Oslo Universitetssykehus, Oslo, Norway.,Department of Ophthalmology, Sørlandet Hospital Arendal, Arendal, Norway
| | - Darlene A Dartt
- Massachusetts Eye and Ear Infirmary, Department of Ophthalmology, Harvard Medical School, Schepens Eye Research Institute, Boston, Massachusetts, USA
| | - Steffen Heegaard
- Department of Ophthalmology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark.,Department of Pathology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Goran Petrovski
- Center for Eye Research, Department of Ophthalmology, Oslo University Hospital and Institute for Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Miriam Kolko
- Department of Drug Design and Pharmacology, University of Copenhagen, Copenhagen, Denmark.,Department of Ophthalmology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
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Josifovska N, Lumi X, Szatmari-Tóth M, Kristóf E, Russell G, Nagymihály R, Anisimova N, Malyugin B, Kolko M, Ivastinović D, Petrovski G. Clinical and molecular markers in retinal detachment-From hyperreflective points to stem cells and inflammation. PLoS One 2019; 14:e0217548. [PMID: 31185026 PMCID: PMC6559703 DOI: 10.1371/journal.pone.0217548] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Accepted: 05/14/2019] [Indexed: 12/22/2022] Open
Abstract
PURPOSE Retinal detachment (RD) is one of the most frequently diagnosed ophthalmologic conditions requiring prompt surgical intervention. Combination of proper surgical technique and new diagnostic markers, both clinical and molecular, can help improve the diagnosis and prognosis of RD treatment. METHODS 12 patients with rhegmatogenous RD (rRD) were included into the study after obtaining patient consent and Regional Ethical Approval (average age: 58.1 ± 17.4 years). OCT was performed before and after 23G vitrectomy for RD. Pure subretinal fluid (SRF) was collected during surgery and analyzed by protein array profiling on a panel of 105 inflammatory cytokines (Human XL Cytokine Array), while the effect of SRF upon human macrophages-driven phagocytosis of apoptotic retinal pigment epithelial (RPE) cells ex vivo was quantified by flow cytometry. Immunohistochemistry (IHC) of retinectomized tissue due to PVR caused by RD was performed to determine presence of markers for microglial cells (CD34), macrophages and activated microglia (CD68), regulator of the immune response to infection (NFkB), progenitor and stem cell marker (Sox2), pluripotency marker (Oct4) and intermediate filament markers (GFAP and Nestin). RESULTS OCT of fresh RD patients contained pre-operatively hyper reflective points (HRPs) at the detached neuroretina border and proximal to the RPE layer-their size and number decreased following successful reattachment surgery. IHC of the retinectomized tissue from detached retina due to severe PVR showed presence of cell conglomerates at the detached neuroretina border which were positive for CD68, NFkB, Sox2 and GFAP, less positive for CD47 and Nestin and negative for Oct4 and CD34. The SRF contained at least 37 cytokines with higher, and 4 cytokine with lower concentration compared to that in vitreous from non-RD pathology; when used as conditional medium to human macrophages ex vivo, the SRF doubled their capacity for engulfing dying RPEs. CONCLUSIONS Fresh RD can be hallmarked by presence of HRPs at the detached neuroretina border on OCT; the HRPs decrease in size and number after successful reattachment surgery, and likely resemble the macrophage conglomerates seen by IHC. The neuroretina in RD contains progenitor/stem-like cells and signs of inflammatory reaction, while the SRF contains inflammatory cytokines and other factors which increase the ability of professional phagocytes to engulf dying RPE, or for that matter, other dying cells in the retina.
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Affiliation(s)
- Natasha Josifovska
- Center for Eye Research, Department of Ophthalmology, Oslo University Hospital and University of Oslo, Oslo, Norway
| | - Xhevat Lumi
- Eye Hospital, University Medical Centre, Ljubljana, Slovenia
| | - Mária Szatmari-Tóth
- Department of Biochemistry and Molecular Biology and MTA-DE Stem cell, Apoptosis and Genomics Research Group, University of Debrecen, Debrecen, Hungary
| | - Endre Kristóf
- Department of Biochemistry and Molecular Biology and MTA-DE Stem cell, Apoptosis and Genomics Research Group, University of Debrecen, Debrecen, Hungary
| | - Greg Russell
- Department of Ophthalmology, Faculty of Medicine, University of Szeged, Szeged, Hungary
| | - Richárd Nagymihály
- Center for Eye Research, Department of Ophthalmology, Oslo University Hospital and University of Oslo, Oslo, Norway
| | - Natalia Anisimova
- S. Fyodorov Eye Microsurgery State Institution, Moscow, Russian Federation
| | - Boris Malyugin
- S. Fyodorov Eye Microsurgery State Institution, Moscow, Russian Federation
| | - Miriam Kolko
- Department of Drug Design and Pharmacology, University of Copenhagen and Department of Ophthalmology, Copenhagen University Hospital, Rigshospitalet-Glostrup, Copenhagen, Denmark
| | | | - Goran Petrovski
- Center for Eye Research, Department of Ophthalmology, Oslo University Hospital and University of Oslo, Oslo, Norway
- Department of Ophthalmology, Faculty of Medicine, University of Szeged, Szeged, Hungary
- * E-mail:
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Szabó DJ, Nagymihály R, Veréb Z, Josifovska N, Noer A, Liskova P, Facskó A, Moe MC, Petrovski G. Ex vivo 3D human corneal stroma model for Schnyder corneal dystrophy - role of autophagy in its pathogenesis and resolution. Histol Histopathol 2017; 33:455-462. [PMID: 28872183 DOI: 10.14670/hh-11-928] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
INTRODUCTION Multilamellar bodies (MLBs) are concentric cytoplasmic membranes which form through an autophagy-dependent mechanism. In the cornea, the presence of MLBs is associated with Schnyder corneal dystrophy (SCD). Ex vivo 3D modelling of the corneal stroma and SCD can help study pathogenesis and resolution of the disorder. METHODS Corneal stroma explants were isolated from cadavers and cultivated long-term for more than 3 months to achieve spontaneous 3D outgrowth of corneal stroma-derived mesenchymal stem-like cells (CSMSCs). The 3D tissues were then examined by transmission electron microscopy (TEM) for presence of MLBs, and by immunofluorescent labelling against markers for autophagy (p62, LC3). Autophagy was induced by classical serum starvation or rapamycin (RAP) treatment (50 nM), and inhibited by the autophagy inhibitor 3-methyladenine (3-MA, 10 mM) for 24 hours. RESULTS CSMSCs can form spontaneously 3D outgrowths over a 3-4 weeks period, depositing their own extracellular matrix containing collagen I. TEM confirmed the presence of MLBs in the long-term (>3 months) 3D cultures, which became more abundant under starvation and RAP treatment, and decreased in number under autophagy inhibition with 3-MA. The presence of autophagy and its disappearance could be confirmed by an inversely related increase and decrease in the expression of LC3 and p62, respectively. CONCLUSIONS MLB formation in long-standing CSMSC cultures could serve as a potential ex vivo model for studying corneal stroma diseases, including SCD. Inhibition of autophagy can decrease the formation of MLBs, which may lead to a novel treatment of the disease in the future.
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Affiliation(s)
- Dóra Júlia Szabó
- Stem Cells and Eye Research Laboratory, Department of Ophthalmology, Faculty of Medicine, University of Szeged, Szeged, Hungary
| | - Richárd Nagymihály
- Stem Cells and Eye Research Laboratory, Department of Ophthalmology, Faculty of Medicine, University of Szeged, Szeged, Hungary
| | - Zoltán Veréb
- Stem Cells and Eye Research Laboratory, Department of Ophthalmology, Faculty of Medicine, University of Szeged, Szeged, Hungary
| | - Natasha Josifovska
- Stem Cells and Eye Research Laboratory, Department of Ophthalmology, Faculty of Medicine, University of Szeged, Szeged, Hungary
| | - Agate Noer
- Center of Eye Research, Department of Ophthalmology, Oslo University Hospital, University of Oslo, Oslo, Norway
| | - Petra Liskova
- Insitute of Inherited Metabolic Diseases, First Faculty of Medicine, Charles University and General University Hospital in Prague, Czech Republic
| | - Andrea Facskó
- Stem Cells and Eye Research Laboratory, Department of Ophthalmology, Faculty of Medicine, University of Szeged, Szeged, Hungary
| | - Morten C Moe
- Center of Eye Research, Department of Ophthalmology, Oslo University Hospital, University of Oslo, Oslo, Norway
| | - Goran Petrovski
- Center of Eye Research, Department of Ophthalmology, Oslo University Hospital, University of Oslo, Oslo, Norway.,Stem Cells and Eye Research Laboratory, Department of Ophthalmology, Faculty of Medicine, University of Szeged, Szeged, Hungary.
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Josifovska N, Szabó DJ, Nagymihály R, Veréb Z, Facskó A, Eriksen K, Moe MC, Petrovski G. Cultivation and characterization of pterygium as an ex vivo study model for disease and therapy. Cont Lens Anterior Eye 2017; 40:283-292. [PMID: 28550976 DOI: 10.1016/j.clae.2017.04.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [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: 10/06/2016] [Revised: 03/30/2017] [Accepted: 04/19/2017] [Indexed: 12/13/2022]
Abstract
PURPOSE Development of ex vivo model to study pathogenesis, inflammation and treatment modalities for pterygium. METHODS Pterygium obtained from surgery was cultivated (3 months). Gravitational attachment method using viscoelastic facilitated adherence of graft and outgrowing cells. Medium contained serum as the only growth supplement with no use of scaffolds. Surface profiling of the multi-layered cells for hematopoietic- and mesenchymal stem cell markers was performed. Examination of cells by immunohistochemistry using pluripotency, oxidative stress, stemness, migration and proliferation, epithelial and secretory markers was performed. The effect of anti-proliferative agent Mitomycin C upon secretion of pro-inflammatory cytokines IL-6 and IL-8 was assessed. RESULTS Cells showed high expression of migration- (CXCR4), secretory- (MUC1, MUC4) and oxidative damage- (8-OHdG) markers, and low expression of hypoxia- (HIF-1α) and proliferation- (Ki-67) markers. Moderate and low expression of the pluripotency markers (Vimentin and ΔNp63) was present, respectively, while the putative markers of stemness (Sox2, Oct4, ABCG-2) and epithelial cell markers- (CK19, CK8-18) were weak. The surface marker profile of the outgrowing cells revealed high expression of the hematopoietic marker CD47, mesenchymal markers CD90 and CD73, minor or less positivity for the hematopoietic marker CD34, mesenchymal marker CD105, progenitor marker CD117 and attachment protein markers while low levels of IL-6 and IL-8 secretion ex vivo, were inhibited upon Mitomycin C treatment. CONCLUSION Ex vivo tissue engineered pterygium consists of a mixture of cells of different lineage origin, suitable for use as a disease model for studying pathogenesis ex vivo, while opening possibilities for new treatment and prevention modalities.
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Affiliation(s)
- Natasha Josifovska
- Stem Cells and Eye Research Laboratory, Department of Ophthalmology, Faculty of Medicine, University of Szeged, Koranyi Fasor 10-11, 6720 Szeged, Hungary
| | - Dóra Júlia Szabó
- Stem Cells and Eye Research Laboratory, Department of Ophthalmology, Faculty of Medicine, University of Szeged, Koranyi Fasor 10-11, 6720 Szeged, Hungary
| | - Richárd Nagymihály
- Stem Cells and Eye Research Laboratory, Department of Ophthalmology, Faculty of Medicine, University of Szeged, Koranyi Fasor 10-11, 6720 Szeged, Hungary
| | - Zoltán Veréb
- Stem Cells and Eye Research Laboratory, Department of Ophthalmology, Faculty of Medicine, University of Szeged, Koranyi Fasor 10-11, 6720 Szeged, Hungary
| | - Andrea Facskó
- Stem Cells and Eye Research Laboratory, Department of Ophthalmology, Faculty of Medicine, University of Szeged, Koranyi Fasor 10-11, 6720 Szeged, Hungary
| | - Ketil Eriksen
- Center for Eye Research, Department of Ophthalmology, Oslo University Hospital and University of Oslo, Kirkeveien 166, N-0407 Oslo, Norway
| | - Morten C Moe
- Center for Eye Research, Department of Ophthalmology, Oslo University Hospital and University of Oslo, Kirkeveien 166, N-0407 Oslo, Norway
| | - Goran Petrovski
- Stem Cells and Eye Research Laboratory, Department of Ophthalmology, Faculty of Medicine, University of Szeged, Koranyi Fasor 10-11, 6720 Szeged, Hungary; Center for Eye Research, Department of Ophthalmology, Oslo University Hospital and University of Oslo, Kirkeveien 166, N-0407 Oslo, Norway.
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Nagymihály R, Veréb Z, Albert R, Sidney L, Dua H, Hopkinson A, Petrovski G. Cultivation and characterisation of the surface markers and carbohydrate profile of human corneal endothelial cells. Clin Exp Ophthalmol 2017; 45:509-519. [PMID: 28032398 DOI: 10.1111/ceo.12903] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [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: 07/08/2016] [Revised: 11/16/2016] [Accepted: 12/08/2016] [Indexed: 12/13/2022]
Abstract
BACKGROUND The study aims to characterise human corneal endothelial cell (HCEnC) cultures generated by the peel-and-digest method based on their surface protein/carbohydrate expression pattern. METHODS Quantitative polymerase chain reaction was used to compare expression of vimentin, CD90, Cytokeratin-19, ZO-1 and Claudin 14 in cultured HCEnC and cell line B4G12 versus stromal cells. Fluorescence-activated cell sorting was used to assess surface protein distribution of cultured and uncultured HCEnC. Distribution of surface proteins/carbohydrates was visualised by immunofluorescent and lectin staining. RESULTS Human corneal endothelial cell and B4G12 showed lower expression level for vimentin, CD90, Cytokeratin-19 compared with stromal cells; while ZO-1 was expressed in endothelial cells, Claudin 14 was detected in B4G12 only. Fluorescence-activated cell sorting analyses revealed CD166, CD47, CD44, CD54, CD73, CD90, CD105, CD106, CD112, CD146 and CD325 to be present, with CD34 to be absent from cultured HCEnC. Freshly isolated, non-cultivated HCEnCs were CD90, CD73, CD146 and CD325 positive. Carbohydrates were detected by lectins LCA, PHA E, PHA L, PSA, sWGA, Con A, RCA 120 and WGA, but cultured HCEnC showed negative for GSL I, SBA, DBA, PNA and UEA I. CONCLUSION Cultures established by the peel-and-digest method are probably not prone to stromal contamination, but the cells are likely to undergo endothelial-to mesenchymal transition as suggested by apparent morphological changes.
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Affiliation(s)
- Richárd Nagymihály
- Stem Cells and Eye Research Laboratory, Department of Ophthalmology, Faculty of Medicine, University of Szeged, Szeged, Hungary
| | - Zoltán Veréb
- Stem Cells and Eye Research Laboratory, Department of Ophthalmology, Faculty of Medicine, University of Szeged, Szeged, Hungary
| | - Réka Albert
- Stem Cells and Eye Research Laboratory, Department of Ophthalmology, Faculty of Medicine, University of Szeged, Szeged, Hungary
| | - Laura Sidney
- Academic Department of Ophthalmology, Division of Clinical Neuroscience, University of Nottingham, Nottingham, UK
| | - Harminder Dua
- Academic Department of Ophthalmology, Division of Clinical Neuroscience, University of Nottingham, Nottingham, UK
| | - Andrew Hopkinson
- Academic Department of Ophthalmology, Division of Clinical Neuroscience, University of Nottingham, Nottingham, UK
| | - Goran Petrovski
- Stem Cells and Eye Research Laboratory, Department of Ophthalmology, Faculty of Medicine, University of Szeged, Szeged, Hungary.,Center for Eye Research, Department of Ophthalmology, Oslo University Hospital and University of Oslo, Oslo, Norway
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