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Larsen K, Petrovski G, Boix-Lemonche G. Alternative cryoprotective agent for corneal stroma-derived mesenchymal stromal cells for clinical applications. Sci Rep 2024; 14:15788. [PMID: 38982099 PMCID: PMC11233711 DOI: 10.1038/s41598-024-65469-4] [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: 12/22/2023] [Accepted: 06/20/2024] [Indexed: 07/11/2024] Open
Abstract
Cryopreservation of human corneal stroma-derived mesenchymal stromal cells (hCS-MSCs) with dimethylsulfoxide (DMSO) as a cryoprotective agent (CPA) has not been previously compared to that with glycerol under standard conditions. The hCS-MSCs were hereby cryopreserved with both compounds using a freezing rate of 1 °C/minute. The CPAs were tested by different concentrations in complete Minimum Essential Medium (MEM) approved for good manufacturing practice, and a medium frequently used in cell laboratory culturing-Dulbecco's modified eagle serum. The hCS-MSCs were isolated from cadaveric human corneas obtained from the Norwegian Eye Bank, and immunophenotypically characterized by flow cytometry before and after cryopreservation. The survival rate, the cellular adhesion, proliferation and cell surface coverage after cryopreservation of hCS-MSCs has been studied. The hCS-MSCs were immunofluorescent stained and examined for their morphology microscopically. The results showed that cryopreservation of hCS-MSCs in MEM with 10% glycerol gives a higher proliferation rate compared to other cryopreserving media tested. Based on the results, hCS-MSCs can safely be cryopreserved using glycerol instead of the traditional use of DMSO.
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Affiliation(s)
- Kristoffer Larsen
- Center for Eye Research and Innovative Diagnostics, Department of Ophthalmology, Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Goran Petrovski
- Center for Eye Research and Innovative Diagnostics, Department of Ophthalmology, Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
- Department of Ophthalmology, Oslo University Hospital, Oslo, Norway
- School of Medicine, University of Split, 21000, Split, Croatia
- UKLONetwork, University St. Kliment Ohridski -Bitola, 7000, Bitola, North Macedonia
| | - Gerard Boix-Lemonche
- Center for Eye Research and Innovative Diagnostics, Department of Ophthalmology, Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway.
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Meissner JM, Chmielińska A, Ofri R, Cisło-Sankowska A, Marycz K. Extracellular Vesicles Isolated from Equine Adipose-Derived Stromal Stem Cells (ASCs) Mitigate Tunicamycin-Induced ER Stress in Equine Corneal Stromal Stem Cells (CSSCs). Curr Issues Mol Biol 2024; 46:3251-3277. [PMID: 38666934 PMCID: PMC11048834 DOI: 10.3390/cimb46040204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Revised: 03/29/2024] [Accepted: 04/03/2024] [Indexed: 04/28/2024] Open
Abstract
Corneal ulcers, characterized by severe inflammation of the cornea, can lead to serious, debilitating complications and may be vision-threatening for horses. In this study, we aimed to investigate the role of endoplasmic reticulum (ER) stress in corneal stem progenitor cell (CSSC) dysfunction and explore the potential of equine adipose-derived stromal stem cell (ASC)-derived extracellular vesicles (EVs) to improve corneal wound healing. We showed that CSSCs expressed high levels of CD44, CD45, and CD90 surface markers, indicating their stemness. Supplementation of the ER-stress-inducer tunicamycin to CSSCs resulted in reduced proliferative and migratory potential, accumulation of endoplasmic reticulum (ER)-stressed cells in the G0/G1 phase of the cell cycle, increased expression of proinflammatory genes, induced oxidative stress and sustained ER stress, and unfolded protein response (UPR). Importantly, treatment with EVs increased the proliferative activity and number of cells in the G2/Mitosis phase, enhanced migratory ability, suppressed the overexpression of proinflammatory cytokines, and upregulated the anti-inflammatory miRNA-146a-5p, compared to control and/or ER-stressed cells. Additionally, EVs lowered the expression of ER-stress master regulators and effectors (PERK, IRE1, ATF6, and XBP1), increased the number of mitochondria, and reduced the expression of Fis-1 and Parkin, thereby promoting metabolic homeostasis and protecting against apoptosis in equine CSSCs. Our findings demonstrate that MSCs-derived EVs represent an innovative and promising therapeutic strategy for the transfer of bioactive mediators which regulate various cellular and molecular signaling pathways.
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Affiliation(s)
- Justyna M. Meissner
- Department of Experimental Biology, Faculty of Biology and Animal Science, Wrocław University of Environmental and Life Sciences, Norwida 27B, 50-375 Wroclaw, Poland;
| | - Aleksandra Chmielińska
- International Institute of Translational Medicine, Jesionowa 11, Malin, 55-114 Wisznia Mala, Poland; (A.C.); (A.C.-S.)
| | - Ron Ofri
- Koret School of Veterinary Medicine, Hebrew University of Jerusalem, P.O. Box 12, Rehovot 7610001, Israel;
| | - Anna Cisło-Sankowska
- International Institute of Translational Medicine, Jesionowa 11, Malin, 55-114 Wisznia Mala, Poland; (A.C.); (A.C.-S.)
| | - Krzysztof Marycz
- Department of Experimental Biology, Faculty of Biology and Animal Science, Wrocław University of Environmental and Life Sciences, Norwida 27B, 50-375 Wroclaw, Poland;
- International Institute of Translational Medicine, Jesionowa 11, Malin, 55-114 Wisznia Mala, Poland; (A.C.); (A.C.-S.)
- Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, CA 95516, USA
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3
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Szűcs D, Monostori T, Miklós V, Páhi ZG, Póliska S, Kemény L, Veréb Z. Licensing effects of inflammatory factors and TLR ligands on the regenerative capacity of adipose-derived mesenchymal stem cells. Front Cell Dev Biol 2024; 12:1367242. [PMID: 38606318 PMCID: PMC11007080 DOI: 10.3389/fcell.2024.1367242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Accepted: 03/15/2024] [Indexed: 04/13/2024] Open
Abstract
Introduction: Adipose tissue-derived mesenchymal stem cells are promising contributors to regenerative medicine, exhibiting the ability to regenerate tissues and modulate the immune system, which is particularly beneficial for addressing chronic inflammatory ulcers and wounds. Despite their inherent capabilities, research suggests that pretreatment amplifies therapeutic effectiveness. Methods: Our experimental design exposed adipose-derived mesenchymal stem cells to six inflammatory factors for 24 h. We subsequently evaluated gene expression and proteome profile alterations and observed the wound closure rate post-treatment. Results: Specific pretreatments, such as IL-1β, notably demonstrated an accelerated wound-healing process. Analysis of gene and protein expression profiles revealed alterations in pathways associated with tissue regeneration. Discussion: This suggests that licensed cells exhibit potentially higher therapeutic efficiency than untreated cells, shedding light on optimizing regenerative strategies using adipose tissue-derived stem cells.
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Affiliation(s)
- Diána Szűcs
- Regenerative Medicine and Cellular Pharmacology Laboratory, Department of Dermatology and Allergology, University of Szeged, Szeged, Hungary
- Doctoral School of Clinical Medicine, University of Szeged, Szeged, Hungary
- Centre of Excellence for Interdisciplinary Research, Development and Innovation, University of Szeged, Szeged, Hungary
| | - Tamás Monostori
- Regenerative Medicine and Cellular Pharmacology Laboratory, Department of Dermatology and Allergology, University of Szeged, Szeged, Hungary
- Doctoral School of Clinical Medicine, University of Szeged, Szeged, Hungary
- Centre of Excellence for Interdisciplinary Research, Development and Innovation, University of Szeged, Szeged, Hungary
| | | | - Zoltán G. Páhi
- Genome Integrity and DNA Repair Core Group, Hungarian Centre of Excellence for Molecular Medicine (HCEMM), University of Szeged, Szeged, Hungary
- Department of Pathology, Albert Szent-Györgyi Medical School, University of Szeged, Szeged, Hungary
| | - Szilárd Póliska
- Genomic Medicine and Bioinformatics Core Facility, Department of Biochemistry and Molecular Biology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Lajos Kemény
- Regenerative Medicine and Cellular Pharmacology Laboratory, Department of Dermatology and Allergology, University of Szeged, Szeged, Hungary
- Centre of Excellence for Interdisciplinary Research, Development and Innovation, University of Szeged, Szeged, Hungary
- Hungarian Centre of Excellence for Molecular Medicine-USz Skin Research Group, University of Szeged, Szeged, Hungary
| | - Zoltán Veréb
- Regenerative Medicine and Cellular Pharmacology Laboratory, Department of Dermatology and Allergology, University of Szeged, Szeged, Hungary
- Centre of Excellence for Interdisciplinary Research, Development and Innovation, University of Szeged, Szeged, Hungary
- Biobank, University of Szeged, Szeged, Hungary
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4
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El Zarif M, Abdul Jawad K, Alió JL, Makdissy N, De Miguel MP. In vivo confocal microscopy evaluation of infiltrated immune cells in corneal stroma treated with cell therapy in advanced keratoconus. J Ophthalmic Inflamm Infect 2024; 14:5. [PMID: 38277094 PMCID: PMC10817874 DOI: 10.1186/s12348-024-00385-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Accepted: 01/06/2024] [Indexed: 01/27/2024] Open
Abstract
PURPOSE This study investigates immune cell (ICs) infiltration in advanced keratoconus patients undergoing autologous adipose-derived adult stem cell (ADASC) therapy with recellularized human donor corneal laminas (CL). METHODS A prospective clinical trial included fourteen patients divided into three groups: G-1, ADASCs; G-2, decellularized CL (dCL); and G-3, dCL recellularized with ADASCs (ADASCs-rCL). Infiltrated ICs were assessed using in vivo confocal microscopy (IVCM) at 1,3,6, and12 months post-transplant. RESULTS Infiltrated ICs, encompassing granulocytes and agranulocytes, were observed across all groups, categorized by luminosity, structure, and area. Stromal ICs infiltration ranged from 1.19% to 6.62%, with a consistent increase in group-related cell density (F = 10.68, P < .0001), independent of post-op time (F = 0.77, P = 0.511); the most substantial variations were observed in G-3 at 6 and 12 months (2.0 and 1.87-fold, respectively). Similarly, significant size increases were more group-dependent (F = 5.76, P < .005) rather than time-dependent (F = 2.84, P < .05); G-3 exhibited significant increases at 6 and 12 months (3.70-fold and 2.52-fold, respectively). A lamina-induced shift in IC size occurred (F = 110.23, P < .0001), primarily with 50-100 μm2 sizes and up to larger cells > 300μm2, presumably macrophages, notably in G-3, indicating a potential role in tissue repair and remodeling, explaining reductions in cells remnants < 50μm2. CONCLUSIONS ADASCs-rCL therapy may lead to increased IC infiltration compared to ADASCs alone, impacting cell distribution and size due to the presence of the lamina. The findings reveal intricate immune patterns shaped by the corneal microenvironment and highlight the importance of understanding immune responses for the development of future therapeutic strategies.
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Affiliation(s)
- Mona El Zarif
- Optica General, Saida, Lebanon
- Division of Ophthalmology, Universidad Miguel Hernández, Alicante, Spain
- Doctoral School of Sciences and Technology, Lebanese University, Hadath, Lebanon
| | | | - Jorge L Alió
- Division of Ophthalmology, Universidad Miguel Hernández, Alicante, Spain
- Cornea, Cataract and Refractive Surgery Unit, Vissum (Miranza Group), Alicante, Spain
| | - Nehman Makdissy
- Genomic Surveillance and Biotherapy GSBT, Faculty of Sciences, Lebanese University, RasMaska, Lebanon.
| | - María P De Miguel
- Cell Engineering Laboratory, IdiPAZ, La Paz Hospital Health Research Institute, Madrid, Spain.
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Dou S, Liu X, Shi W, Gao H. New dawn for keratoconus treatment: potential strategies for corneal stromal regeneration. Stem Cell Res Ther 2023; 14:317. [PMID: 37932824 PMCID: PMC10629149 DOI: 10.1186/s13287-023-03548-5] [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: 08/02/2023] [Accepted: 10/27/2023] [Indexed: 11/08/2023] Open
Abstract
Keratoconus is a progressive, ectatic and blinding disorder of the cornea, characterized by thinning of corneal stroma. As a highly prevalent among adolescents, keratoconus has been a leading indication for corneal transplantation worldwide. However, the severe shortage of donor corneas is a global issue, and the traditional corneal transplantation surgeries may superinduce multiple complications, necessitating efforts to develop more effective strategies for keratoconus treatment. In this review, we summarized several strategies to promote corneal stromal regeneration or improve corneal stromal thickness, including cell-based therapies, biosynthetic alternatives for inducing corneal regeneration, minimally invasive intrastromal implantation and bioengineered tissues for implantation. These strategies provided more accessible but safer alternatives from various perspectives for keratoconus treatment, paving the way for arresting the keratoconus progression in its earlier stage. For the treatments of corneal ectatic diseases beyond keratoconus, these approaches will provide important references and widen the therapy options in a donor tissue-independent manner.
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Affiliation(s)
- Shengqian Dou
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Eye Institute of Shandong First Medical University, Qingdao, China
- Qingdao Eye Hospital of Shandong First Medical University, Qingdao, China
| | - Xiaoxue Liu
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Eye Institute of Shandong First Medical University, Qingdao, China
- Eye Hospital of Shandong First Medical University, Jinan, China
- School of Ophthalmology, Shandong First Medical University, Jinan, China
| | - Weiyun Shi
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Eye Institute of Shandong First Medical University, Qingdao, China
- Eye Hospital of Shandong First Medical University, Jinan, China
- School of Ophthalmology, Shandong First Medical University, Jinan, China
| | - Hua Gao
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Eye Institute of Shandong First Medical University, Qingdao, China.
- Eye Hospital of Shandong First Medical University, Jinan, China.
- School of Ophthalmology, Shandong First Medical University, Jinan, China.
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Shetty R, Mahendran K, Joshi PD, Jeyabalan N, Jayadev C, Das D. Corneal stromal regeneration-keratoconus cell therapy: a review. Graefes Arch Clin Exp Ophthalmol 2023; 261:3051-3065. [PMID: 37074409 DOI: 10.1007/s00417-023-06064-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 03/28/2023] [Accepted: 04/05/2023] [Indexed: 04/20/2023] Open
Abstract
BACKGROUND Keratoconus is a corneal ectatic disease caused by stromal thinning leading to astigmatism and progressive loss of vision. Loss of the keratocytes and excessive degradation of collagen fibres by matrix metalloproteinases are the molecular signatures of the disease. Despite several limitations, corneal collagen cross-linking and keratoplasty are the most widely used treatment options for keratoconus. In the pursuit of alternative treatment modalities, clinician scientists have explored cell therapy paradigms for treating the condition. METHODS Articles pertaining to keratoconus cell therapy with relevant key words were used to search in PubMed, Researchgate, and Google Scholar. The articles were selected based on their relevance, reliability, publication year, published journal, and accessibility. RESULTS Various cellular abnormalities have been reported in keratoconus. Diverse cell types such as mesenchymal stromal cells, dental pulp cells, bone marrow stem cells, haematopoietic stem cells, adipose-derived stem cells apart from embryonic and induced pluripotent stem cells can be used for keratoconus cell therapy. The results obtained show that there is a potential for these cells from various sources as a viable treatment option. CONCLUSION There is a need for consensus with respect to the source of cells, mode of delivery, stage of disease, and duration of follow-up, to establish a standard operating protocol. This would eventually widen the cell therapy options for corneal ectatic diseases beyond keratoconus.
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Affiliation(s)
- Rohit Shetty
- Department of Cornea and Refractive Surgery, Narayana Nethralaya Eye Hospital, Bangalore, India
| | - Krithikaa Mahendran
- Stem Cell Research Lab, GROW Lab, Narayana Nethralaya Foundation, Narayana Nethralaya, Bangalore, India
| | - Parth D Joshi
- Stem Cell Research Lab, GROW Lab, Narayana Nethralaya Foundation, Narayana Nethralaya, Bangalore, India
| | | | - Chaitra Jayadev
- Department of Vitreo-Retina, Narayana Nethralaya Eye Hospital, Bangalore, India
| | - Debashish Das
- Stem Cell Research Lab, GROW Lab, Narayana Nethralaya Foundation, Narayana Nethralaya, Bangalore, India.
- Stem Cell Lab, GROW Lab, Narayana Nethralaya Foundation, Narayana Nethralaya Eye Hospital, Narayana Health City, 258/A Bommasandra Industrial Area, Bangalore, 560099, Karnataka, India.
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Wang L, Xu X, Chen Q, Wei Y, Wei Z, Jin ZB, Liang Q. Extracellular Vesicle MicroRNAs From Corneal Stromal Stem Cell Enhance Stemness of Limbal Epithelial Stem Cells by Targeting the Notch Pathway. Invest Ophthalmol Vis Sci 2023; 64:42. [PMID: 37768272 PMCID: PMC10541724 DOI: 10.1167/iovs.64.12.42] [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: 04/10/2023] [Accepted: 09/07/2023] [Indexed: 09/29/2023] Open
Abstract
Purpose The limbal niche supports the self-renewal of limbal epithelial stem cells (LESCs). The corneal stromal stem cell (CSSC) is an important component in the niche that regulates the LESC phenotype. However, the intercellular communication between LESCs and CSSCs has yet to be elucidated. Methods A traditional two-dimensional (2D) system, a direct three-dimensional (3D) system, and an indirect 3D coculture system of LESCs and CSSCs were used to elucidate the paracrine pathway effect of CSSCs on LESCs. To reveal the impact of CSSC derived extracellular vesicles (CSSC-EVs) on LESCs, GW4869 and CSSC-EVs were added separately to the LESC culture medium. The outgrowth rate, cell density, differentiation, and stemness maintenance were compared among these methods. The miRNAs in the CSSC-EVs were sequenced, and the targeted Notch pathway was further confirmed by RT‒qPCR and Western blotting. Results Compared with 2D culture, both the direct and indirect 3D coculture systems yielded a higher outgrowth rate and expression of stem cell markers of LESCs. The phenotypes of LESCs cultivated using the two coculture approaches were also comparable. Nevertheless, GW4869 inhibited the effect of CSSCs on LESCs, and the addition of CSSC-EVs to the 2D culture system could increase cell density, and the proportion of p63αbright cells, which indicated that CSSC-EVs were crucial in regulating LESCs. Furthermore, the EV-AlixKD with reduced miRNA partly lost its regulating function. The abundant miRNAs in CSSC-EVs, such as hsa-miR-663b, hsa-miR-16-5p, and hsa-miR-1290, target the Notch pathway. The LESCs transfected with miR-663b had higher p63 expression via downregulating of the Notch pathway. Conclusions CSSC-EV played an important role in promoting LESC proliferation and stemness maintenance by targeting Notch signaling via miRNAs, which will increase our understanding of the limbal niche and provide a potential new approach for LESC culture and the treatment of corneal epithelial disorders.
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Affiliation(s)
- Leying Wang
- Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Xizhan Xu
- Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Qiankun Chen
- Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Yuan Wei
- Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Zhenyu Wei
- Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Zi-Bing Jin
- Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Qingfeng Liang
- Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing, China
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Kun-Varga A, Gubán B, Miklós V, Parvaneh S, Guba M, Szűcs D, Monostori T, Varga J, Varga Á, Rázga Z, Bata-Csörgő Z, Kemény L, Megyeri K, Veréb Z. Herpes Simplex Virus Infection Alters the Immunological Properties of Adipose-Tissue-Derived Mesenchymal-Stem Cells. Int J Mol Sci 2023; 24:11989. [PMID: 37569367 PMCID: PMC10418794 DOI: 10.3390/ijms241511989] [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: 04/17/2023] [Revised: 06/20/2023] [Accepted: 06/26/2023] [Indexed: 08/13/2023] Open
Abstract
The proper functioning of mesenchymal stem cells (MSCs) is of paramount importance for the homeostasis of the body. Inflammation and infection can alter the function of MSCs, which can also affect the regenerative potential and immunological status of tissues. It is not known whether human herpes simplex viruses 1 and 2 (HSV1 and HSV2), well-known human pathogens that can cause lifelong infections, can induce changes in MSCs. In non-healing ulcers, HSV infection is known to affect deeper tissue layers. In addition, HSV infection can recur after initially successful cell therapies. Our aim was to study the response of adipose-derived MSCs (ADMSCs) to HSV infection in vitro. After confirming the phenotype and differentiation capacity of the isolated cells, we infected the cells in vitro with HSV1-KOS, HSV1-532 and HSV2 virus strains. Twenty-four hours after infection, we examined the gene expression of the cells via RNA-seq and RT-PCR; detected secreted cytokines via protein array; and determined autophagy via Western blot, transmission electron microscopy (TEM) and fluorescence microscopy. Infection with different HSV strains resulted in different gene-expression patterns. In addition to the activation of pathways characteristic of viral infections, distinct non-immunological pathways (autophagy, tissue regeneration and differentiation) were also activated according to analyses with QIAGEN Ingenuity Pathway Analysis, Kyoto Encyclopedia of Genes and Genome and Genome Ontology Enrichment. Viral infections increased autophagy, as confirmed via TEM image analysis, and also increased levels of the microtubule-associated protein light chain 3 (LC3B) II protein. We identified significantly altered accumulation for 16 cytokines involved in tissue regeneration and inflammation. Our studies demonstrated that HSV infection can alter the viability and immunological status of ADMSCs, which may have implications for ADMSC-based cell therapies. Alterations in autophagy can affect numerous processes in MSCs, including the inhibition of tissue regeneration as well as pathological differentiation.
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Affiliation(s)
- Anikó Kun-Varga
- Regenerative Medicine and Cellular Pharmacology Laboratory, Department of Dermatology and Allergology, University of Szeged, H-6720 Szeged, Hungary; (A.K.-V.); (B.G.); (M.G.); (D.S.); (T.M.); (L.K.)
- Doctoral School of Clinical Medicine, University of Szeged, H-6720 Szeged, Hungary
| | - Barbara Gubán
- Regenerative Medicine and Cellular Pharmacology Laboratory, Department of Dermatology and Allergology, University of Szeged, H-6720 Szeged, Hungary; (A.K.-V.); (B.G.); (M.G.); (D.S.); (T.M.); (L.K.)
| | - Vanda Miklós
- Biobank, University of Szeged, H-6720 Szeged, Hungary;
| | - Shahram Parvaneh
- HCEMM-SZTE Skin Research Group, University of Szeged, H-6720 Szeged, Hungary; (S.P.); (Z.B.-C.)
| | - Melinda Guba
- Regenerative Medicine and Cellular Pharmacology Laboratory, Department of Dermatology and Allergology, University of Szeged, H-6720 Szeged, Hungary; (A.K.-V.); (B.G.); (M.G.); (D.S.); (T.M.); (L.K.)
- Interdisciplinary Research Development and Innovation Center of Excellence, University of Szeged, H-6720 Szeged, Hungary
| | - Diána Szűcs
- Regenerative Medicine and Cellular Pharmacology Laboratory, Department of Dermatology and Allergology, University of Szeged, H-6720 Szeged, Hungary; (A.K.-V.); (B.G.); (M.G.); (D.S.); (T.M.); (L.K.)
- Interdisciplinary Research Development and Innovation Center of Excellence, University of Szeged, H-6720 Szeged, Hungary
| | - Tamás Monostori
- Regenerative Medicine and Cellular Pharmacology Laboratory, Department of Dermatology and Allergology, University of Szeged, H-6720 Szeged, Hungary; (A.K.-V.); (B.G.); (M.G.); (D.S.); (T.M.); (L.K.)
- Interdisciplinary Research Development and Innovation Center of Excellence, University of Szeged, H-6720 Szeged, Hungary
| | - János Varga
- Dermatosurgery and Plastic Surgery Unit, Department of Dermatology and Allergology, University of Szeged, H-6720 Szeged, Hungary; (J.V.); (Á.V.)
| | - Ákos Varga
- Dermatosurgery and Plastic Surgery Unit, Department of Dermatology and Allergology, University of Szeged, H-6720 Szeged, Hungary; (J.V.); (Á.V.)
| | - Zsolt Rázga
- Department of Pathology, University of Szeged, H-6720 Szeged, Hungary;
| | - Zsuzsanna Bata-Csörgő
- HCEMM-SZTE Skin Research Group, University of Szeged, H-6720 Szeged, Hungary; (S.P.); (Z.B.-C.)
| | - Lajos Kemény
- Regenerative Medicine and Cellular Pharmacology Laboratory, Department of Dermatology and Allergology, University of Szeged, H-6720 Szeged, Hungary; (A.K.-V.); (B.G.); (M.G.); (D.S.); (T.M.); (L.K.)
- HCEMM-SZTE Skin Research Group, University of Szeged, H-6720 Szeged, Hungary; (S.P.); (Z.B.-C.)
- Interdisciplinary Research Development and Innovation Center of Excellence, University of Szeged, H-6720 Szeged, Hungary
| | - Klára Megyeri
- Department of Medical Microbiology, University of Szeged, H-6720 Szeged, Hungary;
| | - Zoltán Veréb
- Regenerative Medicine and Cellular Pharmacology Laboratory, Department of Dermatology and Allergology, University of Szeged, H-6720 Szeged, Hungary; (A.K.-V.); (B.G.); (M.G.); (D.S.); (T.M.); (L.K.)
- Biobank, University of Szeged, H-6720 Szeged, Hungary;
- Interdisciplinary Research Development and Innovation Center of Excellence, University of Szeged, H-6720 Szeged, Hungary
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PAX6 Expression Patterns in the Adult Human Limbal Stem Cell Niche. Cells 2023; 12:cells12030400. [PMID: 36766742 PMCID: PMC9913671 DOI: 10.3390/cells12030400] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 01/17/2023] [Accepted: 01/21/2023] [Indexed: 01/24/2023] Open
Abstract
Paired box 6 (PAX6), a nuclear transcription factor, determines the fate of limbal epithelial progenitor cells (LEPC) and maintains epithelial cell identity. However, the expression of PAX6 in limbal niche cells, primarily mesenchymal stromal cells (LMSC), and melanocytes is scarce and not entirely clear. To distinctly assess the PAX6 expression in limbal niche cells, fresh and organ-cultured human corneoscleral tissues were stained immunohistochemically. Furthermore, the expression of PAX6 in cultured limbal cells was investigated. Immunostaining revealed the presence of PAX6-negative cells which were positive for vimentin and the melanocyte markers Melan-A and human melanoma black-45 in the basal layer of the limbal epithelium. PAX6 staining was not observed in the limbal stroma. Moreover, the expression of PAX6 was observed by Western blot in cultured LEPC but not in cultured LMSC or LM. These data indicate a restriction of PAX6 expression to limbal epithelial cells at the limbal stem cell niche. These observations warrant further studies for the presence of other PAX isoforms in the limbal stem cell niche.
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Trends in using mesenchymal stromal/stem cells (MSCs) in treating corneal diseases. Ocul Surf 2022; 26:255-267. [DOI: 10.1016/j.jtos.2022.10.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 10/03/2022] [Accepted: 10/07/2022] [Indexed: 12/05/2022]
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Polisetti N, Sharaf L, Reinhard T, Schlunck G. Isolation and ex vivo Expansion of Limbal Mesenchymal Stromal Cells. Bio Protoc 2022; 12:e4471. [PMID: 35978577 PMCID: PMC9350925 DOI: 10.21769/bioprotoc.4471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 06/08/2022] [Accepted: 06/09/2022] [Indexed: 12/29/2022] Open
Abstract
Limbal mesenchymal stromal cells (LMSC), a cellular component of the limbal stem cell niche, have the capability of determining the fate of limbal epithelial progenitor cells (LEPC), which are responsible for the homeostasis of corneal epithelium. However, the isolation of these LMSC has proven to be difficult due to the small fraction of LMSC in the total limbal population, and primary cultures are always hampered by contamination with other cell types. We recently published the efficient isolation and functional characterization of LMSC from the human corneal limbus using CD90 as a selective marker. We observed that flow sorting yielded a pure population of LMSC with superior self-renewal capacity and transdifferentiation potential, and supported the maintenance of the LEPC phenotype. Here, we describe an optimized protocol for the isolation of LMSC from cadaveric corneal limbal tissue by combined collagenase digestion and flow sorting with expansion of LMSC on plastic. Graphical abstract.
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Affiliation(s)
- Naresh Polisetti
- Eye Center, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany
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*For correspondence:
| | - Lyne Sharaf
- Eye Center, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Thomas Reinhard
- Eye Center, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Günther Schlunck
- Eye Center, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany
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Combined Therapy Using Human Corneal Stromal Stem Cells and Quiescent Keratocytes to Prevent Corneal Scarring after Injury. Int J Mol Sci 2022; 23:ijms23136980. [PMID: 35805991 PMCID: PMC9267074 DOI: 10.3390/ijms23136980] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 06/18/2022] [Accepted: 06/21/2022] [Indexed: 02/04/2023] Open
Abstract
Corneal blindness due to scarring is conventionally treated by corneal transplantation, but the shortage of donor materials has been a major issue affecting the global success of treatment. Pre-clinical and clinical studies have shown that cell-based therapies using either corneal stromal stem cells (CSSC) or corneal stromal keratocytes (CSK) suppress corneal scarring at lower levels. Further treatments or strategies are required to improve the treatment efficacy. This study examined a combined cell-based treatment using CSSC and CSK in a mouse model of anterior stromal injury. We hypothesize that the immuno-regulatory nature of CSSC is effective to control tissue inflammation and delay the onset of fibrosis, and a subsequent intrastromal CSK treatment deposited collagens and stromal specific proteoglycans to recover a native stromal matrix. Using optimized cell doses, our results showed that the effect of CSSC treatment for suppressing corneal opacities was augmented by an additional intrastromal CSK injection, resulting in better corneal clarity. These in vivo effects were substantiated by a further downregulated expression of stromal fibrosis genes and the restoration of stromal fibrillar organization and regularity. Hence, a combined treatment of CSSC and CSK could achieve a higher clinical efficacy and restore corneal transparency, when compared to a single CSSC treatment.
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Efficient Isolation and Functional Characterization of Niche Cells from Human Corneal Limbus. Int J Mol Sci 2022; 23:ijms23052750. [PMID: 35269891 PMCID: PMC8911296 DOI: 10.3390/ijms23052750] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 02/23/2022] [Accepted: 02/28/2022] [Indexed: 12/13/2022] Open
Abstract
The fate decision of limbal epithelial progenitor cells (LEPC) at the human corneal limbus is determined by the surrounding microenvironment with limbal niche cells (LNC) as one of its essential components. Research on freshly isolated LNC which mainly include limbal mesenchymal stromal cells (LMSC) and limbal melanocytes (LM) has been hampered by a lack of efficient protocols to isolate and purify these cells. We devised a protocol for rapid retrieval of pure LMSC, LM and LEPC populations by collagenase digestion of limbal tissue and subsequent fluorescence-activated cell sorting (FACS) using antibodies against CD90 and CD117. The sorted cells were characterized by immunophenotyping and functional assays. The effects of LMSC and LM on LEPC were studied in 3D co-cultures and LEPC differentiation status was assessed by immunohistochemistry. Enzymatic digestion and flow sorting yielded pure populations of LMSC (CD117−CD90+), LM (CD117+CD90−), and LEPC (CD117−CD90−). The LMSC exhibited self-renewal capacity (55.0 ± 4.6 population doublings), expressed mesenchymal stem cell markers (CD73, CD90, CD105, and CD44), and transdifferentiated to adipocytes, osteocytes, or chondrocytes. The LM exhibited self-renewal capacity and sustained melanin production. The sorted LEPC expressed epithelial progenitor markers (CK14, CK19, and CK15) and showed a colony-forming ability. Co-cultivation of LMSC and LM with LEPC resulted in a 4–5-layered stratified epithelium and supported the preservation of a LEPC phenotype, as reflected by increased p63+ and Ki67+ cells and decreased CK12+ cells compared with LEPC monocultures. A highly efficient isolation of pure LM, LMSC, and LEPC populations from a single preparation may allow for direct transcriptomic and proteomic profiling as well as functional studies on native unpassaged LNC, which can be considered as proper equivalents of LNC in vivo. The developed biomimetic 3D co-culture method could provide an experimental model for investigating the functional role of LNC in the limbal stem cell niche.
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Polisetti N, Gießl A, Zenkel M, Heger L, Dudziak D, Naschberger E, Stich L, Steinkasserer A, Kruse FE, Schlötzer-Schrehardt U. Melanocytes as emerging key players in niche regulation of limbal epithelial stem cells. Ocul Surf 2021; 22:172-189. [PMID: 34425298 DOI: 10.1016/j.jtos.2021.08.006] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 08/05/2021] [Accepted: 08/14/2021] [Indexed: 02/09/2023]
Abstract
PURPOSE Limbal melanocytes (LMel) represent essential components of the corneal epithelial stem cell niche and are known to protect limbal epithelial stem/progenitor cells (LEPCs) from UV damage by transfer of melanosomes. Here, we explored additional functional roles for LMel in niche homeostasis, immune regulation and angiostasis. METHODS Human corneoscleral tissues were morphologically analyzed in normal, inflammatory and wound healing conditions. The effects of LMel on LEPCs were analyzed in direct and indirect co-culture models using electron microscopy, immunocytochemistry, qRT-PCR, Western blotting and functional assays; limbal mesenchymal stromal cells and murine embryonic 3T3 fibroblasts served as controls. The immunophenotype of LMel was assessed by flow cytometry before and after interferon-γ stimulation, and their immunomodulatory properties were analyzed by mixed lymphocytes reaction, monocyte adhesion assays and cytometric bead arrays. Their angiostatic effects on human umbilical cord endothelial cells (HUVECs) were evaluated by proliferation, migration, and tube formation assays. RESULTS LMel and LEPCs formed structural units in the human limbal stem cell niche in situ, which could be functionally replicated, including melanosome transfer, by co-cultivation in vitro. LMel supported LEPCs during clonal expansion and during epithelial wound healing by stimulating proliferation and migration, and suppressed their differentiation through direct contact and paracrine effects. Under inflammatory conditions, LMel were increased in numbers and upregulated expression of ICAM-1 and MHC II molecules (HLA-DR), but lacked expression of HLA-G, -DP, -DQ and costimulatory molecules CD80 and CD86. They were also found to be potent suppressors of alloreactive T- cell proliferation and cytokine secretion, which largely depended on direct cell-cell interaction. Moreover, the LMel secretome exerted angiostatic activity by inhibiting vascular endothelial cell proliferation and capillary network formation. CONCLUSION These findings suggest that LMel are not only professional melanin-producing cells, but exert various non-canonical functions in limbal niche homeostasis by regulating LEPC maintenance, immune responses, and angiostasis. Their potent regulatory, immunomodulatory and anti-angiogenic properties may have important implications for future regenerative cell therapies.
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Affiliation(s)
- Naresh Polisetti
- Department of Ophthalmology, University Hospital Erlangen, Friedrich-Alexander-University of Erlangen-Nürnberg, Erlangen, Germany; Eye Center, Medical Center - Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Andreas Gießl
- Department of Ophthalmology, University Hospital Erlangen, Friedrich-Alexander-University of Erlangen-Nürnberg, Erlangen, Germany
| | - Matthias Zenkel
- Department of Ophthalmology, University Hospital Erlangen, Friedrich-Alexander-University of Erlangen-Nürnberg, Erlangen, Germany
| | - Lukas Heger
- Laboratory of Dendritic Cell Biology, Department of Dermatology, University Hospital Erlangen, Friedrich-Alexander-University of Erlangen-Nürnberg, Erlangen, Germany
| | - Diana Dudziak
- Laboratory of Dendritic Cell Biology, Department of Dermatology, University Hospital Erlangen, Friedrich-Alexander-University of Erlangen-Nürnberg, Erlangen, Germany; Deutsches Zentrum Immuntherapie (DZI), Erlangen, Germany; Comprehensive Cancer Center Erlangen-EMN (CCC ER-EMN), Erlangen, Germany; Medical Immunology Campus Erlangen, Erlangen, Germany
| | - Elisabeth Naschberger
- Division of Molecular and Experimental Surgery, Translational Research Center, Department of Surgery, University Hospital Erlangen, Friedrich-Alexander-University of Erlangen-Nürnberg, Erlangen, Germany
| | - Lena Stich
- Department of Immune Modulation, University Hospital Erlangen, Friedrich-Alexander-University of Erlangen-Nürnberg, Erlangen, Germany
| | - Alexander Steinkasserer
- Deutsches Zentrum Immuntherapie (DZI), Erlangen, Germany; Medical Immunology Campus Erlangen, Erlangen, Germany; Department of Immune Modulation, University Hospital Erlangen, Friedrich-Alexander-University of Erlangen-Nürnberg, Erlangen, Germany
| | - Friedrich E Kruse
- Department of Ophthalmology, University Hospital Erlangen, Friedrich-Alexander-University of Erlangen-Nürnberg, Erlangen, Germany
| | - Ursula Schlötzer-Schrehardt
- Department of Ophthalmology, University Hospital Erlangen, Friedrich-Alexander-University of Erlangen-Nürnberg, Erlangen, Germany.
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[Regression and ablation profiles in corneal refractive surgery]. J Fr Ophtalmol 2021; 44:1059-1075. [PMID: 34148702 DOI: 10.1016/j.jfo.2020.08.041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 08/16/2020] [Accepted: 08/24/2020] [Indexed: 11/21/2022]
Abstract
Regression after corneal refractive surgery is a complex phenomenon which seems inevitable. The choice of surgical technique has very little influence on regression for low myopia or myopic astigmatism. However, LASIK and SMILE are the two techniques of choice in the correction of high myopia. LASIK is also better for the correction of hyperopia, hyperopic astigmatism and mixed astigmatism. Intraoperatively, the choice of a wide optical zone and adherence to a thick residual stromal bed provide stability. Regression may also be reduced by modulating anti-inflammatory therapy, treating dry eye, and using mitomycin C in PKR. In all cases, obtaining keratometry during patient follow-up helps to identify the cause of the regression. The objective of this review is to synthesize recent data from the literature on regression in refractive surgery as a function of the ablation profiles used.
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Mesenchymal Stem Cell-Derived Extracellular Vesicles Protect Human Corneal Endothelial Cells from Endoplasmic Reticulum Stress-Mediated Apoptosis. Int J Mol Sci 2021; 22:ijms22094930. [PMID: 34066474 PMCID: PMC8125791 DOI: 10.3390/ijms22094930] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 04/29/2021] [Accepted: 05/05/2021] [Indexed: 12/13/2022] Open
Abstract
Corneal endothelial dystrophy is a relevant cause of vision loss and corneal transplantation worldwide. In the present study, we analyzed the effect of mesenchymal stem cell (MSC)-derived extracellular vesicles (MSC-EVs) in an in vitro model of corneal dystrophy, characterized by endoplasmic reticulum stress. The effects of MSC-EVs were compared with those of serum-derived EVs, reported to display a pro-angiogenic activity. MSC-EVs were able to induce a significant down-regulation of the large majority of endoplasmic reticulum stress-related genes in human corneal endothelial cells after exposure to serum deprivation and tunicamycin. In parallel, they upregulated the Akt pathway and limited caspase-3 activation and apoptosis. At variance, the effect of the serum EVs was mainly limited to Akt phosphorylation, with minimal or absent effects on endoplasmic reticulum stress modulation and apoptosis prevention. The effects of MSC-EVs were correlated to the transfer of numerous endoplasmic reticulum (ER)-stress targeting miRNAs to corneal endothelial cells. These data suggest a potential therapeutic effect of MSC-EVs for corneal endothelial endoplasmic reticulum stress, a major player in corneal endothelial dystrophy.
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Liu XN, Mi SL, Chen Y, Wang Y. Corneal stromal mesenchymal stem cells: reconstructing a bioactive cornea and repairing the corneal limbus and stromal microenvironment. Int J Ophthalmol 2021; 14:448-455. [PMID: 33747824 DOI: 10.18240/ijo.2021.03.19] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Accepted: 11/17/2020] [Indexed: 02/07/2023] Open
Abstract
Corneal stroma-derived mesenchymal stem cells (CS-MSCs) are mainly distributed in the anterior part of the corneal stroma near the corneal limbal stem cells (LSCs). CS-MSCs are stem cells with self-renewal and multidirectional differentiation potential. A large amount of data confirmed that CS-MSCs can be induced to differentiate into functional keratocytes in vitro, which is the motive force for maintaining corneal transparency and producing a normal corneal stroma. CS-MSCs are also an important component of the limbal microenvironment. Furthermore, they are of great significance in the reconstruction of ocular surface tissue and tissue engineering for active biocornea construction. In this paper, the localization and biological characteristics of CS-MSCs, the use of CS-MSCs to reconstruct a tissue-engineered active biocornea, and the repair of the limbal and matrix microenvironment by CS-MSCs are reviewed, and their application prospects are discussed.
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Affiliation(s)
- Xian-Ning Liu
- Department of Ophthalmology, First Hospital of Xi'an; Shaanxi Institute of Ophthalmology, Shaanxi Provincial Key Lab of Ophthalmology, Clinical Research Center for Ophthalmology Diseases of Shaanxi Province, the First Affiliated Hospital of Northwest University, Xi'an 710002, Shaanxi Province, China
| | - Sheng-Li Mi
- Open FIESTA Center, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, Guangdong Province, China.,Biomanufacturing Engineering Laboratory, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, Guangdong Province, China
| | - Yun Chen
- Open FIESTA Center, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, Guangdong Province, China
| | - Yao Wang
- Department of Ophthalmology, First Hospital of Xi'an; Shaanxi Institute of Ophthalmology, Shaanxi Provincial Key Lab of Ophthalmology, Clinical Research Center for Ophthalmology Diseases of Shaanxi Province, the First Affiliated Hospital of Northwest University, Xi'an 710002, Shaanxi Province, China
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Saccu G, Menchise V, Giordano C, Delli Castelli D, Dastrù W, Pellicano R, Tolosano E, Van Pham P, Altruda F, Fagoonee S. Regenerative Approaches and Future Trends for the Treatment of Corneal Burn Injuries. J Clin Med 2021; 10:jcm10020317. [PMID: 33467167 PMCID: PMC7830803 DOI: 10.3390/jcm10020317] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Revised: 01/12/2021] [Accepted: 01/14/2021] [Indexed: 12/13/2022] Open
Abstract
Ocular chemical and thermal burns are frequent causes of hospitalization and require immediate interventions and care. Various surgical and pharmacological treatment strategies are employed according to damage severity. Controlling inflammation and neovascularization while promoting normal ocular surface anatomy and function restoration is the principal aim. In the most severe cases, when epithelial healing is severely affected, reconstruction of the ocular surface may be a valid option, which, however, requires expertise, adequate instruments, and qualified donors. Numerous endogenous and exogenous strategies have been considered for corneal repair. Among these, stem cells and their derivatives have offered numerous attractive possibilities in finding an effective way in stimulating corneal regeneration. Limbal epithelial stem cells and mesenchymal cells from the ocular tissue as well as from various sources have demonstrated their effectiveness in dampening neovascularization, scarring, and inflammation, while promoting epithelialization of the injured cornea. Moreover, a plethora of cytokines and growth factors, and extracellular vesicles, which constitute the secretome of these cells, work in concert to enhance wound healing. In this review, we provide an update on the recent potential therapeutic avenues and clinical applications of stem cells and their products in corneal regeneration after burn injury, as well as current imaging strategies for monitoring therapeutic efficacy and damage resolution.
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Affiliation(s)
- Gabriele Saccu
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Turin, 10126 Turin, Italy; (G.S.); (D.D.C.); (W.D.); (E.T.)
| | - Valeria Menchise
- Institute of Biostructure and Bioimaging, National Research Council, Molecular Biotechnology Center, 10126 Turin, Italy
- Correspondence: (V.M.); (F.A.); (S.F.); Tel.: +39-0116706423 (S.F.)
| | - Cristina Giordano
- Ophthalmology Veterinary Practice, c.so Galileo Ferraris 121, 10126 Turin, Italy;
| | - Daniela Delli Castelli
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Turin, 10126 Turin, Italy; (G.S.); (D.D.C.); (W.D.); (E.T.)
| | - Walter Dastrù
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Turin, 10126 Turin, Italy; (G.S.); (D.D.C.); (W.D.); (E.T.)
| | | | - Emanuela Tolosano
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Turin, 10126 Turin, Italy; (G.S.); (D.D.C.); (W.D.); (E.T.)
| | - Phuc Van Pham
- Laboratory of Stem Cell Research and Application, and Stem Cell Institute, VNUHCM University of Science, Ho Chi Minh City 08000, Vietnam;
| | - Fiorella Altruda
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Turin, 10126 Turin, Italy; (G.S.); (D.D.C.); (W.D.); (E.T.)
- Correspondence: (V.M.); (F.A.); (S.F.); Tel.: +39-0116706423 (S.F.)
| | - Sharmila Fagoonee
- Institute of Biostructure and Bioimaging, National Research Council, Molecular Biotechnology Center, 10126 Turin, Italy
- Correspondence: (V.M.); (F.A.); (S.F.); Tel.: +39-0116706423 (S.F.)
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Liu L, Yu Y, Peng Q, Porsborg SR, Nielsen FM, Jørgensen A, Grove A, Bath C, Hjortdal J, Christiansen OB, Fink T, Zachar V. Distribution of Stromal Cell Subsets in Cultures from Distinct Ocular Surface Compartments. J Ophthalmic Vis Res 2020; 15:493-501. [PMID: 33133440 PMCID: PMC7591840 DOI: 10.18502/jovr.v15i4.7780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Accepted: 06/26/2020] [Indexed: 11/27/2022] Open
Abstract
Purpose To reveal the phenotypic differences between human ocular surface stromal cells (hOSSCs) cultured from the corneal, limbal, and scleral compartments. Methods A comparative analysis of cultured hOSSCs derived from four unrelated donors was conducted by multichromatic flow cytometry for six distinct CD antigens, including the CD73, CD90, CD105, CD166, CD146, and CD34. Results The hOSSCs, as well as the reference cells, displayed phenotypical profiles that were similar in high expression of the hallmark mesenchymal stem cell markers CD73, CD90, and CD105, and also the cancer stem cell marker CD166. Notably, there was considerable variation regarding the expression of CD34, where the highest levels were found in the corneal and scleral compartments. The multi-differentiation potential marker CD146 was also expressed highly variably, ranging from 9% to 89%, but the limbal stromal and endometrial mesenchymal stem cells significantly surpassed their counterparts within the ocular and reference groups, respectively. The use of six markers enabled investigation of 64 possible variants, however, just four variants accounted for almost 90% of all hOSSCs, with the co-expression of CD73, CD90, CD105, and CD166 and a combination of CD146 and CD34. The limbal compartment appeared unique in that it displayed greatest immunophenotype diversity and harbored the highest proportion of the CD146+CD34- pericyte-like forms, but, interestingly, the pericyte-like cells were also found in the avascular cornea. Conclusion Our findings confirm that the hOSSCs exhibit an immunophenotype consistent with that of MSCs, further highlight the phenotypical heterogeneity in stroma from distinct ocular surface compartments, and finally underscore the uniqueness of the limbal region.
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Affiliation(s)
- Lei Liu
- Regenerative Medicine Group, Department of Health Science and Technology, Aalborg University, Aalborg, Denmark
| | - Ying Yu
- Department of Neurosurgery, First Hospital of Jilin University, Changchun, China
| | - Qiuyue Peng
- Regenerative Medicine Group, Department of Health Science and Technology, Aalborg University, Aalborg, Denmark
| | - Simone R Porsborg
- Regenerative Medicine Group, Department of Health Science and Technology, Aalborg University, Aalborg, Denmark
| | - Frederik M Nielsen
- Regenerative Medicine Group, Department of Health Science and Technology, Aalborg University, Aalborg, Denmark
| | - Annemette Jørgensen
- Department of Gynecology and Obstetrics, Aalborg University Hospital, Denmark
| | - Anni Grove
- Department of Pathology, Aalborg University Hospital, Denmark
| | - Chris Bath
- Department of Ophthalmology, Aalborg University Hospital, Aalborg, Denmark
| | - Jesper Hjortdal
- Department of Ophthalmology, Aarhus University Hospital, Aarhus, Denmark
| | - Ole B Christiansen
- Department of Gynecology and Obstetrics, Aalborg University Hospital, Denmark
| | - Trine Fink
- Regenerative Medicine Group, Department of Health Science and Technology, Aalborg University, Aalborg, Denmark
| | - Vladimir Zachar
- Regenerative Medicine Group, Department of Health Science and Technology, Aalborg University, Aalborg, Denmark
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Vessel Wall-Derived Mesenchymal Stromal Cells Share Similar Differentiation Potential and Immunomodulatory Properties with Bone Marrow-Derived Stromal Cells. Stem Cells Int 2020; 2020:8847038. [PMID: 33144864 PMCID: PMC7596426 DOI: 10.1155/2020/8847038] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 09/04/2020] [Accepted: 10/09/2020] [Indexed: 01/07/2023] Open
Abstract
Purpose This study is aimed at investigating the phenotype, differentiation potential, immunomodulatory properties, and responsiveness of saphenous vein vessel wall-derived mesenchymal stromal cells (SV-MSCs) to various TLR ligands and proinflammatory cytokines, as well as comparing their features to those of their bone marrow-derived counterparts (BM-MSCs). Methods SV-MSCs were isolated by enzymatic digestion of the saphenous vein vessel wall. Phenotype analysis was carried out by flow cytometry and microscopy, whereas adipogenic, chondrogenic, and osteogenic differentiation potentials were tested in in vitro assays. For comparative analysis, the expression of different stemness, proliferation, and differentiation-related genes was determined by Affymetrix gene array. To compare the immunomodulatory properties of SV-MSCs and BM-MSCs, mixed lymphocyte reaction was applied. To investigate their responses to various activating stimuli, MSCs were treated with TLR ligands (LPS, PolyI:C) or proinflammatory cytokines (TNFα, IL-1β, IFNγ), and the expression of various early innate immune response-related genes was assessed by qPCR, while secretion of selected cytokines and chemokines was measured by ELISA. Results The isolated SV-MSCs were able to differentiate into bone, fat, and cartilage cells/direction in vitro. SV-MSCs expressed the most important MSC markers (CD29, CD44, CD73, CD90, and CD105) and shared almost identical phenotypic characteristics with BM-MSCs. Their gene expression pattern and activation pathways were close to those of BM-MSCs. SV-MSCs showed better immunosuppressive activity inhibiting phytohemagglutinin-induced T lymphocyte proliferation in vitro than BM-MSCs. Cellular responses to treatments mimicking inflammatory conditions were comparable in the bone marrow- and saphenous vein-derived MSCs. Namely, similar to BM-MSCs, SV-MSCs secreted increased amount of IL-6 and IL-8 after 12- or 24-hour treatment with LPS, PolyI:C, TNFα, or IL-1β, compared to untreated controls. Interestingly, a different CXCL-10/IP-10 secretion pattern could be observed under inflammatory conditions in the two types of MSCs. Conclusion Based on our results, cells isolated from saphenous vein vessel wall fulfilled the ISCT's (International Society for Cellular Therapy) criteria for multipotent mesenchymal stromal cells, and no significant differences in the phenotype, gene expression pattern, and responsiveness to inflammatory stimuli could be observed between BM-MSCs and SV-MSCs, while the latter cells have more potent immunosuppressive activity in vitro. Further functional assays have to be performed to reveal whether SV-MSCs could be useful for certain regenerative therapeutic applications or tissue engineering purposes.
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21
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Laminin-511-E8 promotes efficient in vitro expansion of human limbal melanocytes. Sci Rep 2020; 10:11074. [PMID: 32632213 PMCID: PMC7338389 DOI: 10.1038/s41598-020-68120-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Accepted: 06/18/2020] [Indexed: 01/08/2023] Open
Abstract
Limbal melanocytes, located in the basal epithelial layer of the corneoscleral limbus, represent essential components of the corneal epithelial stem cell niche, but, due to difficulties in their isolation and cultivation, their biological roles and potential for stem cell-based tissue engineering approaches have not been comprehensively studied. Here, we established a protocol for the efficient isolation and cultivation of pure populations of human limbal melanocytes, which could be expanded at high yield by using recombinant laminin (LN)-511-E8 as culture substrate. Co-cultivation of limbal melanocytes with limbal epithelial stem/progenitor cells on fibrin hydrogels pre-incubated with LN-511-E8 resulted in multilayered stratified epithelial constructs within ten days. By reproducing physiological cell–cell and cell–matrix interactions of the native niche environment, these biomimetic co-culture systems provide a promising experimental model for investigating the functional roles of melanocytes in the limbal stem cell niche and their suitability for developing advanced epithelial grafts for ocular surface surface reconstruction.
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22
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Isolation and Culture of Corneal Stromal Stem Cells. Methods Mol Biol 2020. [PMID: 32542596 DOI: 10.1007/978-1-0716-0599-8_1] [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: 11/08/2023]
Abstract
An increasing body of evidence authenticates the benefit of corneal stroma-derived stem cells (CSSCs) in tissue engineering and regeneration oriented research, and potentially in the development of clinically relevant cellular therapies. Postmortem corneal tissue obtained from otherwise discarded material after keratoplasties is oftentimes the source of the cells for ex vivo research. Relatively easy to isolate and cultivate as well as inexpensive to culture, CSSCs now represent a well-described cell type with attributes of mesenchymal stem cells (MSCs). These include differentiation- and immunosuppressive potential, as well as a favorable capacity to expand in vitro. Here, we in detail describe two straightforward methods to isolate and establish CSSC cultures ex vivo.
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Lu XX, Zhao SZ. Gene-based Therapeutic Tools in the Treatment of Cornea Disease. Curr Gene Ther 2020; 19:7-19. [PMID: 30543166 DOI: 10.2174/1566523219666181213120634] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Revised: 11/23/2018] [Accepted: 12/11/2018] [Indexed: 02/07/2023]
Abstract
BACKGROUND As one of the main blinding ocular diseases, corneal blindness resulted from neovascularization that disrupts the angiogenic privilege of corneal avascularity. Following neovascularization, inflammatory cells are infiltrating into cornea to strengthen corneal injury. How to maintain corneal angiogenic privilege to treat corneal disease has been investigated for decades. METHODOLOGY Local administration of viral and non-viral-mediated anti-angiogenic factors reduces angiogenic protein expression in situ with limited or free of off-target effects upon gene delivery. Recently, Mesenchymal Stem Cells (MSCs) have been studied to treat corneal diseases. Once MSCs are manipulated to express certain genes of interest, they could achieve superior therapeutic efficacy after transplantation. DISCUSSION In the text, we first introduce the pathological development of corneal disease in the aspects of neovascularization and inflammation. We summarize how MSCs become an ideal candidate in cell therapy for treating injured cornea, focusing on cell biology, property and features. We provide an updated review of gene-based therapies in animals and preclinical studies in the aspects of controlling target gene expression, safety and efficacy. Gene transfer vectors are potent to induce candidate protein expression. Delivered by vectors, MSCs are equipped with certain characters by expressing a protein of interest, which facilitates better for MSC-mediated therapeutic intervention for the treatment of corneal disease. CONCLUSION As the core of this review, we discuss how MSCs could be engineered to be vector system to achieve enhanced therapeutic efficiency after injection.
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Affiliation(s)
- Xiao-Xiao Lu
- Tianjin Medical University Eye Hospital and Institute, Tianjin 300384, China
| | - Shao-Zhen Zhao
- Tianjin Medical University Eye Hospital and Institute, Tianjin 300384, China
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Yu B, Li XR, Zhang XM. Mesenchymal stem cell-derived extracellular vesicles as a new therapeutic strategy for ocular diseases. World J Stem Cells 2020; 12:178-187. [PMID: 32266050 PMCID: PMC7118288 DOI: 10.4252/wjsc.v12.i3.178] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Revised: 02/22/2020] [Accepted: 03/22/2020] [Indexed: 02/06/2023] Open
Abstract
Mesenchymal stem cells (MSCs) have attracted considerable attention for their activity in the treatment of refractory visual disorders. Since MSCs were found to possess the beneficial effects by secreting paracrine factors rather than direct differentiation, MSC-derived extracellular vesicles (EVs) were widely studied in various disease models. MSCs generate abundant EVs, which act as important mediators by exchanging protein and genetic information between MSCs and target cells. It has been confirmed that MSC-derived EVs possess unique anti-inflammatory, anti-apoptotic, tissue repairing, neuroprotective, and immunomodulatory properties, similar to their parent cells. Upon intravitreal injection, MSC-derived EVs rapidly diffuse through the retina to alleviate retinal injury or inflammation. Due to possible risks associated with MSC transplantation, such as vitreous opacity and pathological proliferation, EVs appear to be a better choice for intravitreal injection. Small size EVs can pass through biological barriers easily and their contents can be modified genetically for optimal therapeutic effect. Hence, currently, they are also explored for the possibility of serving as drug delivery vehicles. In the current review, we describe the characteristics of MSC-derived EVs briefly, comprehensively summarize their biological functions in ocular diseases, and discuss their potential applications in clinical settings.
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Affiliation(s)
- Bo Yu
- Tianjin International Joint Research and Development Center of Ophthalmology and Vision Science, Tianjin Key Laboratory of Retinal Functions and Diseases, Eye Institute and School of Optometry, Tianjin Medical University Eye Hospital, Tianjin 300384, China
| | - Xiao-Rong Li
- Tianjin International Joint Research and Development Center of Ophthalmology and Vision Science, Tianjin Key Laboratory of Retinal Functions and Diseases, Eye Institute and School of Optometry, Tianjin Medical University Eye Hospital, Tianjin 300384, China
| | - Xiao-Min Zhang
- Tianjin International Joint Research and Development Center of Ophthalmology and Vision Science, Tianjin Key Laboratory of Retinal Functions and Diseases, Eye Institute and School of Optometry, Tianjin Medical University Eye Hospital, Tianjin 300384, China
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25
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Liang Y, Zhang D, Li L, Xin T, Zhao Y, Ma R, Du J. Exosomal microRNA-144 from bone marrow-derived mesenchymal stem cells inhibits the progression of non-small cell lung cancer by targeting CCNE1 and CCNE2. Stem Cell Res Ther 2020; 11:87. [PMID: 32102682 PMCID: PMC7045474 DOI: 10.1186/s13287-020-1580-7] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Revised: 12/06/2019] [Accepted: 02/04/2020] [Indexed: 12/17/2022] Open
Abstract
Background Mesenchymal stem cells (MSCs) are pluripotent mesenchymal cells present in various adult tissues. MSCs secrete exosomes as regulators of the tumor niche, with involvement in tumorigenesis and metastasis. The regulatory role of microRNAs (miRs or miRNAs) in MSCs via targeting cyclin E1 (CCNE1) or cyclin E2 (CCNE2) has been extensively reported. Since exosomes are considered as protective and enriched sources of shuttle miRNAs, we hypothesized that exosomal transfer of miR-144 from bone marrow-derived MSCs (BMMSCs) would affect the development of non-small cell lung cancer (NSCLC) cells by targeting CCNE1 and CCNE2. Methods We first quantified the levels of miR-144, CCNE1, and CCNE2 in NSCLC tissues and cell lines and then undertook gain- and loss-of-function studies of miR-144, CCNE1, and CCNE2 to investigate their roles in the biological characteristics of NSCLC in vitro. NSCLC cells (A549) were exposed to exosomes derived from MSCs, and cell proliferation and colony formation rate were determined using in vitro assays. Finally, effects of BMMSC-derived exosomal miR-144 on tumor development were studied in vivo. Results In NSCLC tissues and cell lines, miR-144 was expressed poorly and CCNE1 and CCNE2 were expressed highly. Artificially elevating miR-144 inhibited cell proliferation, colony formation, and the number of S phase-arrested cells in NSCLC by downregulating CCNE1 and CCNE2. Additionally, BMMSC-derived exosomal miR-144 led to restrained NSCLC cell proliferation and colony formation. These inhibitory effects of BMMSC-derived exosomes carrying miR-144 on NSCLC were confirmed by experiments in vivo. Conclusion Collectively, these findings revealed inhibitory effects of BMMSC-derived exosomal miR-144 on NSCLC progression, which were mediated by downregulation of CCNE1 and CCNE2.
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Affiliation(s)
- Yuan Liang
- Medical Oncology Department of Thoracic Cancer (2), Cancer Hospital of China Medical University, Liaoning Cancer Hospital & Institute, No. 44, Xiaoheyan Road, Dadong District, Shenyang, 110042, Liaoning Province, People's Republic of China
| | - Dalin Zhang
- Department of Thyroid Surgery, The First Affiliated Hospital of China Medical University, Shenyang, 110001, People's Republic of China
| | - Linlin Li
- Medical Oncology Department of Thoracic Cancer (2), Cancer Hospital of China Medical University, Liaoning Cancer Hospital & Institute, No. 44, Xiaoheyan Road, Dadong District, Shenyang, 110042, Liaoning Province, People's Republic of China
| | - Tian Xin
- Medical Oncology Department of Thoracic Cancer (2), Cancer Hospital of China Medical University, Liaoning Cancer Hospital & Institute, No. 44, Xiaoheyan Road, Dadong District, Shenyang, 110042, Liaoning Province, People's Republic of China
| | - Yuwei Zhao
- Medical Oncology Department of Thoracic Cancer (2), Cancer Hospital of China Medical University, Liaoning Cancer Hospital & Institute, No. 44, Xiaoheyan Road, Dadong District, Shenyang, 110042, Liaoning Province, People's Republic of China
| | - Rui Ma
- Medical Oncology Department of Thoracic Cancer (2), Cancer Hospital of China Medical University, Liaoning Cancer Hospital & Institute, No. 44, Xiaoheyan Road, Dadong District, Shenyang, 110042, Liaoning Province, People's Republic of China.
| | - Jiang Du
- Department of Pathology, The First Affiliated Hospital and College of Basic Medical Science, China Medical University, No. 155, Nanjing North Street, Heping District, Shenyang, 110001, Liaoning Province, People's Republic of China.
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Kafarnik C, McClellan A, Dziasko M, Daniels JT, Guest DJ. Canine Corneal Stromal Cells Have Multipotent Mesenchymal Stromal Cell Properties In Vitro. Stem Cells Dev 2020; 29:425-439. [PMID: 31973649 DOI: 10.1089/scd.2019.0163] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
The objective of this study was to determine whether corneal stromal cells (CSCs) from the limbal and central corneal stroma in dogs have multipotent mesenchymal stem/stromal cell (MSC) properties, and whether this cell population can be differentiated into keratocyte-like cells (KDCs). Normal, donated, mesocephalic dog corneas were used to isolate CSC in vitro. Immunohistochemistry demonstrated a distinct population of CD90 expressing cells in the anterior stroma throughout the limbal and central cornea. CSC could be cultured from both the limbal and central cornea and the culture kinetics showed a progenitor cell profile. The CSC expressed stem cell markers CD90, CD73, CD105, N-cadherin, and Pax6, while CD34 was negative. Limbal and central CSC differentiated into osteoblasts, chondrocytes, and adipocytes confirming their multipotency. Coculturing allogeneic peripheral blood mononuclear cells (PBMCs) with limbal CSCs did not affect baseline PBMC proliferation indicating a degree of innate immune privilege. Limbal CSC could be differentiated into KDCs that expressed Keratocan, Lumican, and ALDH1A3 and downregulated Pax6 and N-cadherin. In conclusion, canine CSCs have multipotent MSC properties similarly described in humans and could serve as a source of cells for cell therapy and studying corneal diseases.
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Affiliation(s)
- Christiane Kafarnik
- Centre for Preventive Medicine, Animal Health Trust, Newmarket, United Kingdom.,Rescue, Repair and Regeneration Theme, Institute of Ophthalmology, University College London, London, United Kingdom
| | - Alyce McClellan
- Centre for Preventive Medicine, Animal Health Trust, Newmarket, United Kingdom
| | - Marc Dziasko
- Rescue, Repair and Regeneration Theme, Institute of Ophthalmology, University College London, London, United Kingdom
| | - Julie T Daniels
- Rescue, Repair and Regeneration Theme, Institute of Ophthalmology, University College London, London, United Kingdom
| | - Deborah J Guest
- Centre for Preventive Medicine, Animal Health Trust, Newmarket, United Kingdom
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27
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Bandeira F, Goh TW, Setiawan M, Yam GHF, Mehta JS. Cellular therapy of corneal epithelial defect by adipose mesenchymal stem cell-derived epithelial progenitors. Stem Cell Res Ther 2020; 11:14. [PMID: 31900226 PMCID: PMC6942321 DOI: 10.1186/s13287-019-1533-1] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 11/29/2019] [Accepted: 12/17/2019] [Indexed: 12/13/2022] Open
Abstract
Background Persistent epithelial defects (PED), associated with limbal stem cell deficiency (LSCD), require ocular surface reconstruction with a stable corneal epithelium (CE). This study investigated CE reformation using human adipose mesenchymal stem cells (ADSC), which derived epithelial progenitors via mesenchymal-epithelial transition (MET). Methods STEMPRO human ADSC were cultured with specific inhibitors antagonizing glycogen synthase kinase-3 and transforming growth factor-β signaling, followed by culture under a defined progenitor cell targeted-epithelial differentiation condition to generate epithelial-like cells (MET-Epi), which were characterized for cell viability, mesenchymal, and epithelial phenotypes using immunofluorescence and flow cytometry. Tissue-engineered (TE) MET-Epi cells on fibrin gel were transplanted to corneal surface of the rat LSCD model caused by alkali injury. Epithelial healing, corneal edema, and haze grading, CE formation were assessed by fluorescein staining, slit lamp bio-microscopy, anterior segment optical coherence tomography, and immunohistochemistry. Results CD73high/CD90high/CD105high/CD166high/CD14negative/CD31negative human ADSC underwent MET, giving viable epithelial-like progenitors expressing δNp63, CDH1 (E-cadherin), epidermal growth factor receptor, integrin-β4, and cytokeratin (CK)-5, 9. Under defined epithelial differentiation culture, these progenitors generated MET-Epi cells expressing cell junction proteins ZO1 and occludin. When transplanted onto rat corneal surface with LSCD-induced PED, TE-MET-Epi achieved more efficient epithelial healing, suppressed corneal edema, and opacities, when compared to corneas without treatment or transplanted with TE-ADSC. CE markers (CK3, 12, and CDH1) were expressed on TE-MET-Epi-transplanted corneas but not in other control groups. Conclusion Human ADSC-derived epithelial-like cells, via MET, recovered the CE from PED associated with LSCD. ADSC can be a viable adult stem cell source for potential autologous epithelial cell-based therapy for corneal surface disorders.
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Affiliation(s)
- Francisco Bandeira
- Tissue Engineering and Stem Cell Group, Singapore Eye Research Institute, 20 College Road, The Academia, Discovery Tower Level 6, Singapore, 169856, Singapore.,Federal University of São Paulo, Sao Paulo, Brazil
| | - Tze-Wei Goh
- Tissue Engineering and Stem Cell Group, Singapore Eye Research Institute, 20 College Road, The Academia, Discovery Tower Level 6, Singapore, 169856, Singapore
| | - Melina Setiawan
- Tissue Engineering and Stem Cell Group, Singapore Eye Research Institute, 20 College Road, The Academia, Discovery Tower Level 6, Singapore, 169856, Singapore
| | - Gary Hin-Fai Yam
- Tissue Engineering and Stem Cell Group, Singapore Eye Research Institute, 20 College Road, The Academia, Discovery Tower Level 6, Singapore, 169856, Singapore. .,Eye-Academic Clinical Program, Duke-National University of Singapore (NUS) Graduate Medical School, Singapore, Singapore.
| | - Jodhbir S Mehta
- Tissue Engineering and Stem Cell Group, Singapore Eye Research Institute, 20 College Road, The Academia, Discovery Tower Level 6, Singapore, 169856, Singapore. .,Eye-Academic Clinical Program, Duke-National University of Singapore (NUS) Graduate Medical School, Singapore, Singapore. .,Singapore National Eye Centre, Singapore, Singapore. .,School of Material Science and Engineering, Nanyang Technological University, Singapore, Singapore.
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28
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Dos Santos A, Balayan A, Funderburgh ML, Ngo J, Funderburgh JL, Deng SX. Differentiation Capacity of Human Mesenchymal Stem Cells into Keratocyte Lineage. Invest Ophthalmol Vis Sci 2019; 60:3013-3023. [PMID: 31310658 PMCID: PMC6636549 DOI: 10.1167/iovs.19-27008] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Purpose Mesenchymal stem cells (MSCs) have been extensively studied for their capacity to enhance wound healing and represent a promising research field for generating cell therapies for corneal scars. In the present study, we investigated MSCs from different tissues and their potential to differentiate toward corneal keratocytes. Methods Adipose-derived stem cells, bone marrow MSCs, umbilical cord stem cells, and corneal stromal stem cells (CSSCs) were characterized by their expression of surface markers CD105, CD90, and CD73, and their multilineage differentiation capacity into adipocytes, osteoblasts, and chondrocytes. MSCs were also evaluated for their potential to differentiate toward keratocytes, and for upregulation of the anti-inflammatory protein TNFα-stimulated gene-6 (TNFAIP6) after simulation by IFN-γ and TNF-α. Results Keratocyte lineage induction was achieved in all MSCs as indicated by the upregulated expression of keratocyte markers, including keratocan, lumican, and carbohydrate sulfotransferase. TNFAIP6 response to inflammatory stimulation was observed only in CSSCs; increasing by 3-fold compared with the control (P < 0.05). Conclusions Based on our findings, CSSCs appeared to have the greatest differentiation potential toward the keratocyte lineage and the greatest anti-inflammatory properties in vitro.
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Affiliation(s)
- Aurelie Dos Santos
- Stein Eye Institute, University of California Los Angeles, Los Angeles, California, United States
| | - Alis Balayan
- Stein Eye Institute, University of California Los Angeles, Los Angeles, California, United States
| | - Martha L Funderburgh
- Eye and Ear Institute, University of Pittsburgh, Pittsburgh, Pennsylvania, United States
| | - John Ngo
- Stein Eye Institute, University of California Los Angeles, Los Angeles, California, United States
| | - James L Funderburgh
- Eye and Ear Institute, University of Pittsburgh, Pittsburgh, Pennsylvania, United States
| | - Sophie X Deng
- Stein Eye Institute, University of California Los Angeles, Los Angeles, California, United States
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29
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Widowati W, Gunanegara RF, Rizal R, Widodo WS, Amalia A, Wibowo SHB, Handono K, Marlina M, Lister INE, Chiuman L. Comparative Analysis of Wharton’s Jelly Mesenchymal Stem Cell (WJ-MSCs) Isolated Using Explant and Enzymatic Methods. ACTA ACUST UNITED AC 2019. [DOI: 10.1088/1742-6596/1374/1/012024] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Abstract
The cornea is a transparent outermost structure of the eye anterior segment comprising the highest density of innervated tissue. In the process of corneal innervation, trigeminal ganglion originated corneal nerves diligently traverse different corneal cell types in different corneal layers including the corneal stroma and epithelium. While crossing the stromal and epithelial cell layers during innervation, due to the existing physical contacts, close interactions occur between stromal keratocytes, epithelial cells, resident immune cells and corneal nerves. Furthermore, by producing various trophic and growth factors corneal cells assist in maintaining the growth and function of corneal nerves. Similarly, corneal nerve generated growth factors critically modify the corneal cell function in all the corneal layers. Due to their close association and contacts, on-going cross-communication between these cell types and corneal nerves play a vital role in the modulation of corneal nerve function, regeneration during wound healing. The present review highlights the influence of different corneal cell types and growth factors released from these cells on corneal nerve regeneration and function.
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Affiliation(s)
- Bhavani S Kowtharapu
- Department of Ophthalmology, Rostock University Medical Centre, Rostock, Germany
| | - Oliver Stachs
- Department of Ophthalmology, Rostock University Medical Centre, Rostock, Germany
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31
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Orozco Morales ML, Marsit NM, McIntosh OD, Hopkinson A, Sidney LE. Anti-inflammatory potential of human corneal stroma-derived stem cells determined by a novel in vitro corneal epithelial injury model. World J Stem Cells 2019; 11:84-99. [PMID: 30842807 PMCID: PMC6397805 DOI: 10.4252/wjsc.v11.i2.84] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 12/11/2018] [Accepted: 01/01/2019] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND An in vitro injury model mimicking a corneal surface injury was optimised using human corneal epithelial cells (hCEC).
AIM To investigate whether corneal-stroma derived stem cells (CSSC) seeded on an amniotic membrane (AM) construct manifests an anti-inflammatory, healing response.
METHODS Treatment of hCEC with ethanol and pro-inflammatory cytokines were compared in terms of viability loss, cytotoxicity, and pro-inflammatory cytokine release, in order to generate the in vitro injury. This resulted in an optimal injury of 20% (v/v) ethanol for 30 s with 1 ng/mL interleukin-1 (IL-1) beta. Co-culture experiments were performed with CSSC alone and with CSSC-AM constructs. The effect of injury and co-culture on viability, cytotoxicity, IL-6 and IL-8 production, and IL1B, TNF, IL6, and CXCL8 mRNA expression were assessed.
RESULTS Co-culture with CSSC inhibited loss of hCEC viability caused by injury. Enzyme linked immunosorbent assay and polymerase chain reaction showed a significant reduction in the production of IL-6 and IL-8 pro-inflammatory cytokines, and reduction in pro-inflammatory cytokine mRNA expression during co-culture with CSSC alone and with the AM construct. These results confirmed the therapeutic potential of the CSSC and the possible use of AM as a cell carrier for application to the ocular surface.
CONCLUSION CSSC were shown to have a potentially therapeutic anti-inflammatory effect when treating injured hCEC, demonstrating an important role in corneal regeneration and wound healing, leading to an improved knowledge of their potential use for research and therapeutic purposes.
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Affiliation(s)
- Mariana Lizeth Orozco Morales
- Academic Ophthalmology, Division of Clinical Neuroscience, University of Nottingham, Nottingham, NG7 2UH, United Kingdom
| | - Nagi M Marsit
- Academic Ophthalmology, Division of Clinical Neuroscience, University of Nottingham, Nottingham, NG7 2UH, United Kingdom
| | - Owen D McIntosh
- Academic Ophthalmology, Division of Clinical Neuroscience, University of Nottingham, Nottingham, NG7 2UH, United Kingdom
| | - Andrew Hopkinson
- Academic Ophthalmology, Division of Clinical Neuroscience, University of Nottingham, Nottingham, NG7 2UH, United Kingdom
| | - Laura E Sidney
- Academic Ophthalmology, Division of Clinical Neuroscience, University of Nottingham, Nottingham, NG7 2UH, United Kingdom
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32
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Aboutaleb Kadkhodaeian H, Salati A, Lashay A. High efficient differentiation of human adipose-derived stem cells into retinal pigment epithelium-like cells in medium containing small molecules inducers with a simple method. Tissue Cell 2019; 56:52-59. [PMID: 30736904 DOI: 10.1016/j.tice.2018.12.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Revised: 11/18/2018] [Accepted: 12/05/2018] [Indexed: 12/31/2022]
Abstract
BACKGROUND The induction of retinal pigmented epithelium cells (RPE) is one of the most important objectives in research focused on treating retinal degenerative diseases. The present study aims to differentiate human adipose stem cells (hADSCs) into RPE cells for replacement therapies in cases of retinal degenerative diseases. METHODS Lipoaspirate-derived human adipose stem cells (LA-hADSCs) were obtained from abdominal samples and examined by immunocytochemistry for the expression of mesenchymal adipose stem cell markers. RPE cells were also obtained from human samples and cultured to be used as control after being examined for the expression of their designated markers. hADSCs differentiated into RPE cells after 80 days using chemical inducers in one steps. The differentiated cells were then compared to control cells in marker expression. The differentiated cells were also examined under a scanning electron microscope for the presence of apical microvilli and cell connection. RESULTS Cultured hADSCs at the fourth passage was shown to express the surface markers CD90 (98 ± 2%), CD11b (96 ± 3%), and CD105 (95 ± 4%). The RPE cells obtained from human samples expressed the marker RPE65 quite well. 80 days after differentiation, the previously hADSCs expressed both RPE65 (100%) and CRALBP (96 ± 1%) and were thus significantly similar to the RPE cells obtained from human samples. Morphologically, differentiated cells appeared to have epithelial and cytoplasmic pigment granules. Observations using a scanning electron microscope recorded clear connections among the differentiated RPE cells and revealed apical microvilli. CONCLUSION Human adipose stem cells can differentiate into retinal pigmented epithelium cells, which can be used in cell replacement therapy for degenerative diseases including age-related macular degeneration (AMD) as well as retinitis pigmentosa (RP).
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Affiliation(s)
- Hamid Aboutaleb Kadkhodaeian
- Nervous System Stem Cells Research Center, Semnan University of Medical Sciences, Semnan, Iran; Department of Anatomical Sciences, Faculty of Medicine, Semnan University of Medical Sciences, Semnan, Iran.
| | - Amir Salati
- Nervous System Stem Cells Research Center, Semnan University of Medical Sciences, Semnan, Iran; Department of Tissue Engineering and Applied Cell Sciences, Faculty of Medicine, Semnan University of Medical Sciences, Semnan, Iran
| | - Alireza Lashay
- Farabi Eye Institute, Tehran University of Medical Sciences, Tehran, Iran.
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Wang J, Liu X, Qiu Y, Shi Y, Cai J, Wang B, Wei X, Ke Q, Sui X, Wang Y, Huang Y, Li H, Wang T, Lin R, Liu Q, Xiang AP. Cell adhesion-mediated mitochondria transfer contributes to mesenchymal stem cell-induced chemoresistance on T cell acute lymphoblastic leukemia cells. J Hematol Oncol 2018; 11:11. [PMID: 29357914 PMCID: PMC5778754 DOI: 10.1186/s13045-018-0554-z] [Citation(s) in RCA: 151] [Impact Index Per Article: 25.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Accepted: 01/12/2018] [Indexed: 01/12/2023] Open
Abstract
BACKGROUND Despite the high cure rate of T cell acute lymphoblastic leukemia (T-ALL), drug resistance to chemotherapy remains a significant clinical problem. Bone marrow mesenchymal stem cells (MSCs) protect leukemic cells from chemotherapy, but the underlying mechanisms are poorly understood. In this study, we aimed to uncover the mechanism of MSC-induced chemoresistance in T-ALL cells, thus providing a promising clinical therapy target. METHODS Cell viability was determined using the viability assay kit CCK-8. The mitochondrial ROS levels were detected using the fluorescent probe MitoSOX™ Red, and fluorescence intensity was measured by flow cytometry. In vitro, MSCs and Jurkat cells were cocultured. MSCs were labeled with green fluorescent protein (GFP), and Jurkat cells were labeled with the mitochondria-specific dye MitoTracker Red. Bidirectional mitochondrial transfer was detected by flow cytometry and confocal microscopy. The mechanism of mitochondria transfer was analyzed by inhibitor assays. Transcripts related to Jurkat cell/MSC adhesion in the coculture system were assessed by qRT-PCR. After treatment with a neutralizing antibody against a key adhesion molecule, mitochondria transfer from Jurkat cells to MSCs was again detected by flow cytometry and confocal microscopy. Finally, we verified our findings using human primary T-ALL cells cocultured with MSCs. RESULTS Chemotherapeutic drugs caused intracellular oxidative stress in Jurkat cells. Jurkat cells transfer mitochondria to MSCs but receive few mitochondria from MSCs, resulting in chemoresistance. This process of mitochondria transfer is mediated by tunneling nanotubes, which are protrusions that extend from the cell membrane . Moreover, we found that most Jurkat cells adhered to MSCs in the coculture system, which was mediated by the adhesion molecule ICAM-1. Treatment with a neutralizing antibody against ICAM-1 led to a decreased number of adhering Jurkat cells, decreased mitochondria transfer, and increased chemotherapy-induced cell death. CONCLUSIONS We show evidence that mitochondria transfer from Jurkat cells to MSCs, which is mediated by cell adhesion, may be a potential therapeutic target for T-ALL treatment.
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Affiliation(s)
- Jiancheng Wang
- Program of Stem Cells and Regenerative Medicine, Affiliated Guangzhou Women and Children's Hospital, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, 510080, China.,Center for Stem Cell Biology and Tissue Engineering, Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Sun Yat-Sen University, 74# Zhongshan 2nd Road, Guangzhou, Guangdong, China.,Biotherapy Center, the Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou, 510080, China
| | - Xin Liu
- Program of Stem Cells and Regenerative Medicine, Affiliated Guangzhou Women and Children's Hospital, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, 510080, China.,Center for Stem Cell Biology and Tissue Engineering, Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Sun Yat-Sen University, 74# Zhongshan 2nd Road, Guangzhou, Guangdong, China
| | - Yuan Qiu
- Program of Stem Cells and Regenerative Medicine, Affiliated Guangzhou Women and Children's Hospital, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, 510080, China.,Center for Stem Cell Biology and Tissue Engineering, Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Sun Yat-Sen University, 74# Zhongshan 2nd Road, Guangzhou, Guangdong, China
| | - Yue Shi
- Program of Stem Cells and Regenerative Medicine, Affiliated Guangzhou Women and Children's Hospital, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, 510080, China.,Center for Stem Cell Biology and Tissue Engineering, Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Sun Yat-Sen University, 74# Zhongshan 2nd Road, Guangzhou, Guangdong, China
| | - Jianye Cai
- Program of Stem Cells and Regenerative Medicine, Affiliated Guangzhou Women and Children's Hospital, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, 510080, China.,Center for Stem Cell Biology and Tissue Engineering, Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Sun Yat-Sen University, 74# Zhongshan 2nd Road, Guangzhou, Guangdong, China.,Biotherapy Center, the Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou, 510080, China
| | - Boyan Wang
- Program of Stem Cells and Regenerative Medicine, Affiliated Guangzhou Women and Children's Hospital, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, 510080, China.,Center for Stem Cell Biology and Tissue Engineering, Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Sun Yat-Sen University, 74# Zhongshan 2nd Road, Guangzhou, Guangdong, China
| | - Xiaoyue Wei
- Program of Stem Cells and Regenerative Medicine, Affiliated Guangzhou Women and Children's Hospital, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, 510080, China.,Center for Stem Cell Biology and Tissue Engineering, Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Sun Yat-Sen University, 74# Zhongshan 2nd Road, Guangzhou, Guangdong, China
| | - Qiong Ke
- Program of Stem Cells and Regenerative Medicine, Affiliated Guangzhou Women and Children's Hospital, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, 510080, China.,Center for Stem Cell Biology and Tissue Engineering, Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Sun Yat-Sen University, 74# Zhongshan 2nd Road, Guangzhou, Guangdong, China.,Biotherapy Center, the Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou, 510080, China
| | - Xin Sui
- Center for Stem Cell Biology and Tissue Engineering, Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Sun Yat-Sen University, 74# Zhongshan 2nd Road, Guangzhou, Guangdong, China.,The First Affiliated Hospital of Xi'an Jiaotong University Medical College, Xi'an, Shaanxi, 710061, China
| | - Yi Wang
- Center for Stem Cell Biology and Tissue Engineering, Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Sun Yat-Sen University, 74# Zhongshan 2nd Road, Guangzhou, Guangdong, China
| | - Yinong Huang
- Program of Stem Cells and Regenerative Medicine, Affiliated Guangzhou Women and Children's Hospital, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, 510080, China.,Center for Stem Cell Biology and Tissue Engineering, Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Sun Yat-Sen University, 74# Zhongshan 2nd Road, Guangzhou, Guangdong, China.,Biotherapy Center, the Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou, 510080, China
| | - Hongyu Li
- Program of Stem Cells and Regenerative Medicine, Affiliated Guangzhou Women and Children's Hospital, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, 510080, China.,Center for Stem Cell Biology and Tissue Engineering, Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Sun Yat-Sen University, 74# Zhongshan 2nd Road, Guangzhou, Guangdong, China
| | - Tao Wang
- Program of Stem Cells and Regenerative Medicine, Affiliated Guangzhou Women and Children's Hospital, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, 510080, China.,Center for Stem Cell Biology and Tissue Engineering, Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Sun Yat-Sen University, 74# Zhongshan 2nd Road, Guangzhou, Guangdong, China
| | - Ren Lin
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Qifa Liu
- Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Andy Peng Xiang
- Program of Stem Cells and Regenerative Medicine, Affiliated Guangzhou Women and Children's Hospital, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, 510080, China. .,Center for Stem Cell Biology and Tissue Engineering, Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Sun Yat-Sen University, 74# Zhongshan 2nd Road, Guangzhou, Guangdong, China. .,Biotherapy Center, the Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou, 510080, China. .,Key Laboratory of Protein Modification and Degradation, School of Basic Medical Sciences, Affiliated Cancer Hospital and Institute of Guangzhou Medical University, Guangzhou, 511436, China. .,Department of Biochemistry, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, 510080, China.
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MOSHIRFAR M, DESAUTELS JD, WALKER BD, MURRI MS, BIRDSONG OC, HOOPES PCS. Mechanisms of Optical Regression Following Corneal Laser Refractive Surgery: Epithelial and Stromal Responses. MEDICAL HYPOTHESIS, DISCOVERY & INNOVATION OPHTHALMOLOGY JOURNAL 2018; 7:1-9. [PMID: 29644238 PMCID: PMC5887600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
Laser vision correction is a safe and effective method of reducing spectacle dependence. Photorefractive Keratectomy (PRK), Laser In Situ Keratomileusis (LASIK), and Small-Incision Lenticule Extraction (SMILE) can accurately correct myopia, hyperopia, and astigmatism. Although these procedures are nearing optimization in terms of their ability to produce a desired refractive target, the long term cellular responses of the cornea to these procedures can cause patients to regress from the their ideal postoperative refraction. In many cases, refractive regression requires follow up enhancement surgeries, presenting additional risks to patients. Although some risk factors underlying refractive regression have been identified, the exact mechanisms have not been elucidated. It is clear that cellular proliferation events are important mediators of optical regression. This review focused specifically on cellular changes to the corneal epithelium and stroma, which may influence postoperative visual regression following LASIK, PRK, and SMILE procedures.
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Affiliation(s)
- Majid MOSHIRFAR
- John A. Moran Eye Center, Department of Ophthalmology and Visual Sciences, University of Utah School of Medicine, 50 North Medical Dr., Salt Lake City, UT 84132, United States,HDR Research Center, Hoopes Vision, 11820 S. State Street Suite #200, Draper, UT 84020, United States
| | - Jordan D. DESAUTELS
- HDR Research Center, Hoopes Vision, 11820 S. State Street Suite #200, Draper, UT 84020, United States,The Warren Alpert Medical School of Brown University, Providence, RI 02903, United States
| | - Brian D. WALKER
- McGovern Medical School, The University of Texas Health Science Center at Houston, 6431 Fannin St, Houston, TX 77030, United States
| | - Michael S. MURRI
- John A. Moran Eye Center, Department of Ophthalmology and Visual Sciences, University of Utah School of Medicine, 50 North Medical Dr., Salt Lake City, UT 84132, United States
| | - Orry C. BIRDSONG
- HDR Research Center, Hoopes Vision, 11820 S. State Street Suite #200, Draper, UT 84020, United States
| | - Phillip C. Sr HOOPES
- HDR Research Center, Hoopes Vision, 11820 S. State Street Suite #200, Draper, UT 84020, United States
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Gonzalez G, Sasamoto Y, Ksander BR, Frank MH, Frank NY. Limbal stem cells: identity, developmental origin, and therapeutic potential. WILEY INTERDISCIPLINARY REVIEWS-DEVELOPMENTAL BIOLOGY 2017; 7. [PMID: 29105366 DOI: 10.1002/wdev.303] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2017] [Revised: 08/22/2017] [Accepted: 09/03/2017] [Indexed: 12/15/2022]
Abstract
The cornea is our window to the world and our vision is critically dependent on corneal clarity and integrity. Its epithelium represents one of the most rapidly regenerating mammalian tissues, undergoing full-turnover over the course of approximately 1-2 weeks. This robust and efficient regenerative capacity is dependent on the function of stem cells residing in the limbus, a structure marking the border between the cornea and the conjunctiva. Limbal stem cells (LSC) represent a quiescent cell population with proliferative capacity residing in the basal epithelial layer of the limbus within a cellular niche. In addition to LSC, this niche consists of various cell populations such as limbal stromal fibroblasts, melanocytes and immune cells as well as a basement membrane, all of which are essential for LSC maintenance and LSC-driven regeneration. The LSC niche's components are of diverse developmental origin, a fact that had, until recently, prevented precise identification of molecularly defined LSC. The recent success in prospective LSC isolation based on ABCB5 expression and the capacity of this LSC population for long-term corneal restoration following transplantation in preclinical in vivo models of LSC deficiency underline the considerable potential of pure LSC formulations for clinical therapy. Additional studies, including genetic lineage tracing of the developmental origin of LSC will further improve our understanding of this critical cell population and its niche, with important implications for regenerative medicine. WIREs Dev Biol 2018, 7:e303. doi: 10.1002/wdev.303 This article is categorized under: Adult Stem Cells, Tissue Renewal, and Regeneration > Stem Cells and Disease Adult Stem Cells, Tissue Renewal, and Regeneration > Tissue Stem Cells and Niches Adult Stem Cells, Tissue Renewal, and Regeneration > Regeneration.
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Affiliation(s)
- Gabriel Gonzalez
- Department of Medicine, VA Boston Healthcare System, Boston, MA, USA.,Division of Genetics, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Yuzuru Sasamoto
- Department of Medicine, VA Boston Healthcare System, Boston, MA, USA
| | - Bruce R Ksander
- Massachusetts Eye and Ear, Schepens Eye Research Institute, Harvard Medical School, Boston, MA, USA
| | - Markus H Frank
- Transplant Research Program, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA.,Harvard Stem Cell Institute, Harvard University, Cambridge, MA, USA.,School of Medical and Health Sciences, Edith Cowan University, Perth, Western Australia, Australia
| | - Natasha Y Frank
- Department of Medicine, VA Boston Healthcare System, Boston, MA, USA.,Division of Genetics, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
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Effect of Isolation Technique and Location on the Phenotype of Human Corneal Stroma-Derived Cells. Stem Cells Int 2017; 2017:9275248. [PMID: 29213290 PMCID: PMC5682086 DOI: 10.1155/2017/9275248] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Revised: 07/11/2017] [Accepted: 08/27/2017] [Indexed: 12/13/2022] Open
Abstract
Purpose To determine the effect of the isolation technique and location upon the phenotype of human corneal stroma-derived cells (CSCs). Methods CSCs were isolated from the corneal stroma center and periphery using the explant or enzymatic digestion technique. The native tissue was stained for functional markers, while cultured cells were analysed by FACS. PCR was used to determine gene expression in the cultured versus native cells. Results The native stroma was positive for α-actinin, ALDH1A1, CD31, CD34, Collagen I, and Vimentin. Cultured cells expressed CD73, CD90, CD105, CD51, Nestin, CD49a, CD49d, ABCG2, and CD47. PCR demonstrated a significant upregulation of ALDH1A1, AQP1, ITGB4, KLF4, CD31, CD34, and CXCR4 in the native tissue, while the expression of ABCG2, ITGAV, Nestin, CD73, CD90, CD105, and Vimentin were significantly higher in the cultured cells. GPC did not change. Conclusion The study finds no significant difference between the phenotype of CSCs generated by the explant or enzymatic digestion technique from the center or periphery of the stroma. Isolation of the cells can be performed without regard to the location and isolation technique used for research. Cultivated CSCs undergo a complete surface marker and genotype profile change compared to the state in situ.
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37
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Regenerative Therapies in Dry Eye Disease: From Growth Factors to Cell Therapy. Int J Mol Sci 2017; 18:ijms18112264. [PMID: 29143779 PMCID: PMC5713234 DOI: 10.3390/ijms18112264] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Revised: 10/09/2017] [Accepted: 10/28/2017] [Indexed: 02/07/2023] Open
Abstract
Dry eye syndrome is a complex and insidious pathology with a high level of prevalence among the human population and with a consequently high impact on quality of life and economic cost. Currently, its treatment is symptomatic, mainly based on the control of lubrication and inflammation, with significant limitations. Therefore, the latest research is focused on the development of new biological strategies, with the aim of regenerating affected tissues, or at least restricting the progression of the disease, reducing scar tissue, and maintaining corneal transparency. Therapies range from growth factors and cytokines to the use of different cell sources, in particular mesenchymal stem cells, due to their multipotentiality, trophic, and immunomodulatory properties. We will review the state of the art and the latest advances and results of these promising treatments in this pathology.
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Yang J, Zou S, Liao M, Qu L. Transcriptome sequencing revealed candidate genes relevant to mesenchymal stem cells' role in aortic dissection patients. Mol Med Rep 2017; 17:273-283. [PMID: 29115411 PMCID: PMC5780137 DOI: 10.3892/mmr.2017.7851] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2017] [Accepted: 10/13/2017] [Indexed: 01/10/2023] Open
Abstract
Aortic dissection (AD) results from the imbalance between synthesis and degradation of extracellular matrices in aortic wall, which is characterized by chronic inflammation. Mesenchymal stem cells (MSCs) are known for anti-inflammatory and repairing effects and have therefore been studied for treatment for numerous diseases, including AD. However, it is unclear which genes or signaling pathways contribute to MSCs' role in AD. In the present study, RNA sequencing (RNA-seq) was conducted between MSCs from patients with AS (AD-MSCs) and those from age-matched healthy donors (HD-MSCs). RNA-seq revealed 201 differentially expressed genes (DEGs) under the filter of fold change>2 and P-value <0.05, in which 93 genes were upregulated and 108 downregulated. We selectively verified 9 out of 201 DEGs via reverse transcription-quantitative polymerase chain reaction (RT-qPCR) with an enlarged sample size. The trends of RT-qPCR results were consistent with RNA-seq data. Unsupervised hierarchical clustering of the 9-gene expression profiles enables the division of clinical samples into AD and HD groups. Kyoto Encyclopedia of Genes and Genomes analysis displayed a significant change in adhesion-related signaling pathways in AD-MSCs compared with HD-MSCs, whereas gene ontology analysis demonstrated DEGs were enriched in functions associated with development and morphogenesis, from a functional perspective. The present results indicate that gene expression profiles of AD-MSCs were significantly changed compared with HD-MSCs. These changes are probably associated with MSCs' adhesion capacity and development. These results may provide important insights into the role of MSCs in AD pathogenesis.
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Affiliation(s)
- Junlin Yang
- Department of Vascular Surgery, Changzheng Hospital, Shanghai 200003, P.R. China
| | - Sili Zou
- Department of Vascular Surgery, Changzheng Hospital, Shanghai 200003, P.R. China
| | - Mingfang Liao
- Department of Vascular Surgery, Changzheng Hospital, Shanghai 200003, P.R. China
| | - Lefeng Qu
- Department of Vascular Surgery, Changzheng Hospital, Shanghai 200003, P.R. China
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Saghizadeh M, Kramerov AA, Svendsen CN, Ljubimov AV. Concise Review: Stem Cells for Corneal Wound Healing. Stem Cells 2017; 35:2105-2114. [PMID: 28748596 PMCID: PMC5637932 DOI: 10.1002/stem.2667] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Revised: 06/16/2017] [Accepted: 07/02/2017] [Indexed: 02/06/2023]
Abstract
Corneal wound healing is a complex process that occurs in response to various injuries and commonly used refractive surgery. It is a significant clinical problem, which may lead to serious complications due to either incomplete (epithelial) or excessive (stromal) healing. Epithelial stem cells clearly play a role in this process, whereas the contribution of stromal and endothelial progenitors is less well studied. The available evidence on stem cell participation in corneal wound healing is reviewed, together with the data on the use of corneal and non-corneal stem cells to facilitate this process in diseased or postsurgical conditions. Important aspects of corneal stem cell generation from alternative cell sources, including pluripotent stem cells, for possible transplantation upon corneal injuries or in disease conditions are also presented. Stem Cells 2017;35:2105-2114.
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Affiliation(s)
- Mehrnoosh Saghizadeh
- Cedars‐Sinai Medical Center, Regenerative Medicine InstituteLos AngelesCaliforniaUSA
- David Geffen School of Medicine at UCLALos AngelesCaliforniaUSA
| | - Andrei A. Kramerov
- Cedars‐Sinai Medical Center, Regenerative Medicine InstituteLos AngelesCaliforniaUSA
| | - Clive N. Svendsen
- Cedars‐Sinai Medical Center, Regenerative Medicine InstituteLos AngelesCaliforniaUSA
- David Geffen School of Medicine at UCLALos AngelesCaliforniaUSA
| | - Alexander V. Ljubimov
- Cedars‐Sinai Medical Center, Regenerative Medicine InstituteLos AngelesCaliforniaUSA
- David Geffen School of Medicine at UCLALos AngelesCaliforniaUSA
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40
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Huang Y, Mao Q, He J, Su J, Peng Y, Liang W, Hu Z, Zhou S, Lu X, Zhao Y. Fusions of Tumor-derived Endothelial Cells with Dendritic Cells Induces Antitumor Immunity. Sci Rep 2017; 7:46544. [PMID: 28436481 PMCID: PMC5402293 DOI: 10.1038/srep46544] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Accepted: 03/17/2017] [Indexed: 12/13/2022] Open
Abstract
To explore dendritic cells/tumor-derived endothelial cells (DC/EC) fusion cells are potent stimulators of T cells to impact tumor progression. ECs were isolated from mice hepatoma cell line (H22) Xenograft, and dendritic cells were isolated from bone marrow of BALB/c mice, then the isolated ECs were cultured and detected the endothelial surface expression of CD105 by flow cytometry. The endothelial characteristics of ECs were detected by tube formation assay and Dil-Ac-LDL uptake assay. After the fusion with polyethylene glycol (PEG), we used DCs, ECs, DCs mixed ECs as the control groups, DC/EC fusion cells as the experimental group, Secretion of IFN-α and IFN-γ was evaluated, T lymphocyte proliferation and cytotoxic T lymphocytes (CTL) were detected in vitro. In vivo, T lymphocyte induced by five groups was injected to detect the effect of tumor progression. Purified ECs (CD105+) took the function of endothelial cells, then successfully fused with DCs. The DC/EC fusion cells were functional in stimulating the proliferation of T cells, which produced IFN-α and IFN-γ. In vivo, T cells stimulated by DC/EC fusion cells effectively repressed tumor growth. The fusion cells, which was capable of stimulating T cells, is indispensable for antitumor immunity.
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Affiliation(s)
- Yingying Huang
- National Center for International Research of Biological Targeting Diagnosis and Therapy, Guangxi Key Laboratory of Biological Targeting Diagnosis and Therapy Research, Collaborative Innovation Center for Targeting Tumor Diagnosis and Therapy, Guangxi Medical University, Shuang Yong Rd. 22, Nanning 530021, P. R. China
| | - Qiqi Mao
- National Center for International Research of Biological Targeting Diagnosis and Therapy, Guangxi Key Laboratory of Biological Targeting Diagnosis and Therapy Research, Collaborative Innovation Center for Targeting Tumor Diagnosis and Therapy, Guangxi Medical University, Shuang Yong Rd. 22, Nanning 530021, P. R. China
| | - Jian He
- National Center for International Research of Biological Targeting Diagnosis and Therapy, Guangxi Key Laboratory of Biological Targeting Diagnosis and Therapy Research, Collaborative Innovation Center for Targeting Tumor Diagnosis and Therapy, Guangxi Medical University, Shuang Yong Rd. 22, Nanning 530021, P. R. China
| | - Jing Su
- National Center for International Research of Biological Targeting Diagnosis and Therapy, Guangxi Key Laboratory of Biological Targeting Diagnosis and Therapy Research, Collaborative Innovation Center for Targeting Tumor Diagnosis and Therapy, Guangxi Medical University, Shuang Yong Rd. 22, Nanning 530021, P. R. China
| | - Yi Peng
- National Center for International Research of Biological Targeting Diagnosis and Therapy, Guangxi Key Laboratory of Biological Targeting Diagnosis and Therapy Research, Collaborative Innovation Center for Targeting Tumor Diagnosis and Therapy, Guangxi Medical University, Shuang Yong Rd. 22, Nanning 530021, P. R. China
| | - Wei Liang
- National Center for International Research of Biological Targeting Diagnosis and Therapy, Guangxi Key Laboratory of Biological Targeting Diagnosis and Therapy Research, Collaborative Innovation Center for Targeting Tumor Diagnosis and Therapy, Guangxi Medical University, Shuang Yong Rd. 22, Nanning 530021, P. R. China
| | - Zixi Hu
- National Center for International Research of Biological Targeting Diagnosis and Therapy, Guangxi Key Laboratory of Biological Targeting Diagnosis and Therapy Research, Collaborative Innovation Center for Targeting Tumor Diagnosis and Therapy, Guangxi Medical University, Shuang Yong Rd. 22, Nanning 530021, P. R. China
| | - Sufang Zhou
- National Center for International Research of Biological Targeting Diagnosis and Therapy, Guangxi Key Laboratory of Biological Targeting Diagnosis and Therapy Research, Collaborative Innovation Center for Targeting Tumor Diagnosis and Therapy, Guangxi Medical University, Shuang Yong Rd. 22, Nanning 530021, P. R. China
| | - Xiaoling Lu
- National Center for International Research of Biological Targeting Diagnosis and Therapy, Guangxi Key Laboratory of Biological Targeting Diagnosis and Therapy Research, Collaborative Innovation Center for Targeting Tumor Diagnosis and Therapy, Guangxi Medical University, Shuang Yong Rd. 22, Nanning 530021, P. R. China
| | - Yongxiang Zhao
- National Center for International Research of Biological Targeting Diagnosis and Therapy, Guangxi Key Laboratory of Biological Targeting Diagnosis and Therapy Research, Collaborative Innovation Center for Targeting Tumor Diagnosis and Therapy, Guangxi Medical University, Shuang Yong Rd. 22, Nanning 530021, P. R. China
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Hendijani F. Explant culture: An advantageous method for isolation of mesenchymal stem cells from human tissues. Cell Prolif 2017; 50:e12334. [PMID: 28144997 PMCID: PMC6529062 DOI: 10.1111/cpr.12334] [Citation(s) in RCA: 94] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Accepted: 01/03/2017] [Indexed: 12/15/2022] Open
Abstract
Mesenchymal stem cell (MSC) research progressively moves towards clinical phases. Accordingly, a wide range of different procedures were presented in the literature for MSC isolation from human tissues; however, there is not yet any close focus on the details to offer precise information for best method selection. Choosing a proper isolation method is a critical step in obtaining cells with optimal quality and yield in companion with clinical and economical considerations. In this concern, current review widely discusses advantages of omitting proteolysis step in isolation process and presence of tissue pieces in primary culture of MSCs, including removal of lytic stress on cells, reduction of in vivo to in vitro transition stress for migrated/isolated cells, reduction of price, processing time and labour, removal of viral contamination risk, and addition of supporting functions of extracellular matrix and released growth factors from tissue explant. In next sections, it provides an overall report of technical highlights and molecular events of explant culture method for isolation of MSCs from human tissues including adipose tissue, bone marrow, dental pulp, hair follicle, cornea, umbilical cord and placenta. Focusing on informative collection of molecular and methodological data about explant methods can make it easy for researchers to choose an optimal method for their experiments/clinical studies and also stimulate them to investigate and optimize more efficient procedures according to clinical and economical benefits.
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Affiliation(s)
- Fatemeh Hendijani
- Faculty of PharmacyHormozgan University of Medical SciencesBandar AbbasIran
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42
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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] [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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Shukla S, Tavakkoli F, Singh V, Sangwan VS. Mesenchymal stem cell therapy for corneal diseases. Expert Opin Orphan Drugs 2016. [DOI: 10.1080/21678707.2016.1215906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Sachin Shukla
- Prof. Brien Holden Eye Research Centre, Centre for Ocular Regeneration, Hyderabad Eye Research Foundation, Tej Kohli Cornea Institute, L.V. Prasad Eye Institute, Hyderabad, India
| | - Fatemeh Tavakkoli
- Prof. Brien Holden Eye Research Centre, Centre for Ocular Regeneration, Hyderabad Eye Research Foundation, Tej Kohli Cornea Institute, L.V. Prasad Eye Institute, Hyderabad, India
- Centre for Genetic Disorders, Banaras Hindu University, Varanasi, India
| | - Vivek Singh
- Prof. Brien Holden Eye Research Centre, Centre for Ocular Regeneration, Hyderabad Eye Research Foundation, Tej Kohli Cornea Institute, L.V. Prasad Eye Institute, Hyderabad, India
| | - Virender Singh Sangwan
- Prof. Brien Holden Eye Research Centre, Centre for Ocular Regeneration, Hyderabad Eye Research Foundation, Tej Kohli Cornea Institute, L.V. Prasad Eye Institute, Hyderabad, India
- Srujana-Center for Innovation, Tej Kohli Cornea Institute, L. V. Prasad Eye Institute, Hyderabad, India
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