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Bandeira F, Grottone GT, Covre JL, Cristovam PC, Loureiro RR, Pinheiro FI, Casaroli-Marano RP, Donato W, Gomes JÁP. A Framework for Human Corneal Endothelial Cell Culture and Preliminary Wound Model Experiments with a New Cell Tracking Approach. Int J Mol Sci 2023; 24:ijms24032982. [PMID: 36769303 PMCID: PMC9917640 DOI: 10.3390/ijms24032982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 01/21/2023] [Accepted: 01/30/2023] [Indexed: 02/05/2023] Open
Abstract
Cell injection therapy is emerging as an alternative to treat corneal endothelial dysfunction (CED) and to avoid corneal scarring due to bullous keratopathy. However, establishing a standardized culture procedure that provides appropriate cell yield while retaining functional features remains a challenge. Here, we describe a detailed framework obtained from in vitro culture of human corneal endothelial cells (HCECs) and comparative in vivo experimental models for CED treatment with a new cell tracking approach. Two digestion methods were compared regarding HCEC morphology and adhesion. The effect of Y-27632 (ROCKi) supplementation on final cell yield was also assessed. Cell adhesion efficacy with two cell delivery systems (superparamagnetic embedding and cell suspension) was evaluated in an ex vivo human cornea model and in an in vivo rabbit CED model. The injection of supplemented culture medium or balanced salt solution (BSS) was used for the positive and negative controls, respectively. HCEC isolation with collagenase resulted in better morphology and adhesion of cultured HCEC when compared to EDTA. Y-27632 supplementation resulted in a 2.6-fold increase in final cell yield compared to the control. Ex vivo and in vivo adhesion with both cell delivery systems was confirmed by cell tracker fluorescence detection. Corneal edema and opacity improved in both animal groups treated with cultured HCEC. The corneas in the control groups remained opaque. Both HCEC delivery systems seemed comparable as treatments for CED and for the prevention of corneal scarring.
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Affiliation(s)
- Francisco Bandeira
- Department of Ophthalmology, Federal University of São Paulo, São Paulo 04023-062, Brazil
- Medicine School, Barcelona University, 08007 Barcelona, Spain
- Correspondence: ; Tel.: +55-2197-2355-742
| | | | - Joyce Luciana Covre
- Department of Ophthalmology, Federal University of São Paulo, São Paulo 04023-062, Brazil
| | | | - Renata Ruoco Loureiro
- Department of Ophthalmology, Federal University of São Paulo, São Paulo 04023-062, Brazil
| | - Francisco Irochima Pinheiro
- Biotechnology Post-Graduate Program, Potiguar University, Natal 59082-902, Brazil
- Department of Surgery, Federal University of Rio Grande do Norte, Natal 59078-970, Brazil
| | | | - Waleska Donato
- Department of Ophthalmology, Federal University of São Paulo, São Paulo 04023-062, Brazil
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Németh O, Langenbucher A, Eppig T, Lepper S, Milioti G, Abdin A, Nagy ZZ, Seitz B, Szentmáry N. Correlation between Corneal Endothelial Cell Density and Central Ocular Surface Temperature in Normal and Keratoconus Eyes. Curr Eye Res 2020; 46:445-451. [PMID: 32847408 DOI: 10.1080/02713683.2020.1812087] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
PURPOSE In keratoconus (KC), an increase of the corneal back surface area may result in endothelial cell density (ECD) decrease and an increase of the corneal front surface area in ocular surface temperature (OST) decrease due to increased heat dissipation. Along with these hypotheses, we aimed to analyse the correlation between ECD and central corneal OST in patients with KC and healthy controls. PATIENTS AND METHODS A total of 154 eyes with KC (mean age 36.1 ± 12.5 years) and 92 healthy eyes (mean age 36.4 ± 12.8 years) were examined. Corneal front and back surface area at the central 5 mm corneal diameter (FSA and BSA) were calculated based on Pentacam measurement data:FSA or BSA = 2×3.14×R(R-√R2-D/2)2,where R referred to corneal front or back surface radius of curvature and D to the corneal front or back surface diameter (5 mm for the present study), respectively.ECD was determined by specular microscopy (EM-3000) and central corneal OST by thermography (TG-1000). RESULTS ECD was significantly lower in KC (2498 ± 356/mm2) patients than in controls (2638 ± 294/mm2; p < .001). FSA (20.35 ± 0.26 mm2 vs. 20.17 ± 0.03 mm2) and BSA (20.84 ± 0.58 mm2 vs. 20.45 ± 0.08 mm2) were significantly higher in KC patients than in controls (p = .001; p < .001), but the average central corneal OST did not differ significantly between both groups (34.2 ± 0.6°C vs.34.3 ± 0.7°C; p = .62). OST at the corneal centre correlated weakly, positively with ECD (r = 0.2; p < .05), but OST did not correlate with FSA (r = 0.045) or BSA (r = 0.064). CONCLUSIONS Endothelial cell density seems to have a mild impact on central ocular surface temperature in keratoconus and normal subjects. This effect is not correlated to the corneal front or back surface area.
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Affiliation(s)
- Orsolya Németh
- Rolf M. Schwiete Center for Limbal Stem Cell and Congenital Aniridia Research, Homburg/Saar, Germany.,Department of Ophthalmology, Markusovszky University Teaching Hospital, Szombathely, Hungary.,Department of Ophthalmology, Semmelweis University, Budapest, Hungary
| | | | - Timo Eppig
- Experimental Ophthalmology, Saarland University, Homburg/Saar, Germany
| | - Sabine Lepper
- Department of Ophthalmology, Saarland University Medical Center, Homburg/Saar, Germany
| | - Georgia Milioti
- Department of Ophthalmology, Saarland University Medical Center, Homburg/Saar, Germany
| | - Aladin Abdin
- Department of Ophthalmology, Saarland University Medical Center, Homburg/Saar, Germany
| | - Zoltán Zsolt Nagy
- Department of Ophthalmology, Semmelweis University, Budapest, Hungary
| | - Berthold Seitz
- Department of Ophthalmology, Saarland University Medical Center, Homburg/Saar, Germany
| | - Nóra Szentmáry
- Rolf M. Schwiete Center for Limbal Stem Cell and Congenital Aniridia Research, Homburg/Saar, Germany.,Department of Ophthalmology, Semmelweis University, Budapest, Hungary
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Smeringaiova I, Reinstein Merjava S, Stranak Z, Studeny P, Bednar J, Jirsova K. Endothelial Wound Repair of the Organ-Cultured Porcine Corneas. Curr Eye Res 2018; 43:856-865. [PMID: 29648937 DOI: 10.1080/02713683.2018.1458883] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
PURPOSE To assess whether injured porcine endothelium of small and large corneoscleral disc differ in its reparative/regenerative capacity under various conditions of organ culture storage. MATERIAL AND METHODS 166 paired porcine corneas were trephined to obtain tissues with diameter 12.0 mm and 17.5 mm (with area neighboring endothelial periphery). In tested discs, central endothelium was mechanically wounded. Density of live endothelial cells (LECD), percentage of dead cells (%DC), coefficient of variation and cell hexagonality were assessed in central and paracentral endothelium following 5- or 9-day incubation in medium with 2% or 10% fetal bovine serum. The parameters were assessed also in fresh and intact cultured discs. Dead endothelial cells (EC) were visualized by trypan blue, cell borders by Alizarin Red S dye. Endothelial imprints were immunoassayed for the proliferation marker Ki-67 and the nucleolar marker fibrillarin. RESULTS In fresh corneas, the LECD/mm2 (mean ± standard deviation) were 3998.0 ± 215.4 (central area) and 3888.2 ± 363.1 (paracentral area). Only the length of storage had significant effect on wound repair. Lesion was repaired partially after 5-day and fully after 9-day cultivation. After 9-day storage in medium with 10% serum, the mean LECD detected in small discs were 2409.4 ± 881.8 (central area) and 3949.5 ± 275.5 (paracentral area) and in large discs the mean LECD were 2555.0 ± 347.0 (central area) and 4007.5 ± 261.2 (paracentral area). Ki-67 showed cell proliferation associated with healing of EC of both large and small corneas. CONCLUSIONS The lesions were completely repaired within 9 days of storage. Presence of the area, where stem cells appear to be located, contributes to stimulation of endothelial reparation less than serum concentration and time of culture. Both cell migration and proliferation contribute to the wound repair.
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Affiliation(s)
- Ingrida Smeringaiova
- a Laboratory of the Biology and Pathology of the Eye, Clinic of Pediatrics and Adolescent Medicine, First Faculty of Medicine , Charles University and General University Hospital in Prague , Prague , Czech Republic.,b Laboratory of the Biology and Pathology of the Eye, Institute of Biology and Medical Genetics, First Faculty of Medicine , Charles University and General University Hospital in Prague , Prague , Czech Republic
| | - Stanislava Reinstein Merjava
- a Laboratory of the Biology and Pathology of the Eye, Clinic of Pediatrics and Adolescent Medicine, First Faculty of Medicine , Charles University and General University Hospital in Prague , Prague , Czech Republic
| | - Zbynek Stranak
- c Department of Ophthalmology, Third Faculty of Medicine , Charles University and University Hospital Kralovske Vinohrady , Prague , Czech Republic
| | - Pavel Studeny
- c Department of Ophthalmology, Third Faculty of Medicine , Charles University and University Hospital Kralovske Vinohrady , Prague , Czech Republic
| | - Jan Bednar
- b Laboratory of the Biology and Pathology of the Eye, Institute of Biology and Medical Genetics, First Faculty of Medicine , Charles University and General University Hospital in Prague , Prague , Czech Republic
| | - Katerina Jirsova
- b Laboratory of the Biology and Pathology of the Eye, Institute of Biology and Medical Genetics, First Faculty of Medicine , Charles University and General University Hospital in Prague , Prague , Czech Republic
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Establishment of a porcine corneal endothelial organ culture model for research purposes. Cell Tissue Bank 2017; 19:269-276. [DOI: 10.1007/s10561-017-9669-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2017] [Accepted: 10/20/2017] [Indexed: 10/18/2022]
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Menduni F, Davies LN, Madrid-Costa D, Fratini A, Wolffsohn JS. Characterisation of the porcine eyeball as an in-vitro model for dry eye. Cont Lens Anterior Eye 2017; 41:13-17. [PMID: 28986008 DOI: 10.1016/j.clae.2017.09.003] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Revised: 08/28/2017] [Accepted: 09/08/2017] [Indexed: 10/18/2022]
Abstract
PURPOSE To characterise the anatomical parameters of the porcine eye for potentially using it as a laboratory model of dry eye. METHODS Anterior chamber depth and angle, corneal curvature, shortest and longest diameter, endothelial cell density, and pachymetry were measured in sixty freshly enucleated porcine eyeballs. RESULTS Corneal steepest meridian was 7.85±0.32mm, corneal flattest meridian was 8.28±0.32mm, shortest corneal diameter was 12.69±0.58mm, longest corneal diameter was 14.88±0.66mm and central corneal ultrasonic pachymetry was 1009±1μm. Anterior chamber angle was 28.83±4.16°, anterior chamber depth was 1.77±0.27mm, and central corneal thickness measured using OCT was 1248±144μm. Corneal endothelial cell density was 3250±172 cells/mm2. CONCLUSIONS Combining different clinical techniques produced a pool of reproducible data on the porcine eye anatomy, which can be used by researchers to assess the viability of using the porcine eye as an in-vitro/ex-vivo model for dry eye. Due to the similar morphology with the human eye, porcine eyeballs may represent a useful and cost effective model to individually study important key factors in the development of dry eye, such as environmental and mechanical stresses.
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Affiliation(s)
- Francesco Menduni
- School of Life and Health Science, Aston University, Birmingham, UK; Optics and Optometry Department, Complutense University of Madrid, Madrid, Spain.
| | - Leon N Davies
- School of Life and Health Science, Aston University, Birmingham, UK
| | - D Madrid-Costa
- Optics and Optometry Department, Complutense University of Madrid, Madrid, Spain
| | - Antonio Fratini
- School of Life and Health Science, Aston University, Birmingham, UK
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Soh YQ, Peh GSL, Mehta JS. Translational issues for human corneal endothelial tissue engineering. J Tissue Eng Regen Med 2016; 11:2425-2442. [DOI: 10.1002/term.2131] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2015] [Revised: 11/19/2015] [Accepted: 12/10/2015] [Indexed: 12/13/2022]
Affiliation(s)
- Yu Qiang Soh
- Tissue Engineering and Stem Cell Group; Singapore Eye Research Institute; Singapore
- Singapore National Eye Centre; Singapore
| | - Gary S. L. Peh
- Tissue Engineering and Stem Cell Group; Singapore Eye Research Institute; Singapore
- Ophthalmology Academic Clinical Programme; Duke-NUS Graduate Medical School; Singapore
| | - Jodhbir S. Mehta
- Tissue Engineering and Stem Cell Group; Singapore Eye Research Institute; Singapore
- Singapore National Eye Centre; Singapore
- Ophthalmology Academic Clinical Programme; Duke-NUS Graduate Medical School; Singapore
- Department of Clinical Sciences; Duke-NUS Graduate Medical School; Singapore
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