1
|
da Cruz L, Soomro T, Georgiadis O, Nommiste B, Sagoo MS, Coffey P. The Fate of RPE Cells Following hESC-RPE Patch Transplantation in Haemorrhagic Wet AMD: Pigmentation, Extension of Pigmentation, Thickness of Transplant, Assessment for Proliferation and Visual Function-A 5 Year-Follow Up. Diagnostics (Basel) 2024; 14:1005. [PMID: 38786303 PMCID: PMC11119108 DOI: 10.3390/diagnostics14101005] [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: 04/02/2024] [Revised: 04/30/2024] [Accepted: 05/08/2024] [Indexed: 05/25/2024] Open
Abstract
(1) Background: We reviewed a stem cell-derived therapeutic strategy for advanced neovascular age-related macular degeneration (nAMD) using a human embryonic stem cell-derived retinal pigment epithelium (hESC-RPE) monolayer delivered on a coated, synthetic basement membrane (BM)-the patch-and assessed the presence and distribution of hESC-RPE over 5 years following transplantation, as well as functional outcomes. (2) Methods: Two subjects with acute vision loss due to sub-macular haemorrhage in advanced nAMD received the hESC-RPE patch. Systematic immunosuppression was used peri-operatively followed by local depot immunosuppression. The subjects were monitored for five years with observation of RPE patch pigmentation, extension beyond the patch boundary into surrounding retina, thickness of hESC-RPE and synthetic BM and review for migration and proliferation of hESC-RPE. Visual function was also assessed. (3) Results: The two study participants showed clear RPE characteristics of the patch, preservation of some retinal ultrastructure with signs of remodelling, fibrosis and thinning on optical coherence tomography over the 5-year period. For both participants, there was evidence of pigment extension beyond the patch continuing until 12 months post-operatively, which stabilised and was preserved until 5 years post-operatively. Measurement of hESC-RPE and BM thickness over time for both cases were consistent with predefined histological measurements of these two layers. There was no evidence of distant RPE migration or proliferation in either case beyond the monolayer. Sustained visual acuity improvement was apparent for 2 years in both subjects, with one subject maintaining the improvement for 5 years. Both subjects demonstrated initial improvement in fixation and microperimetry compared to baseline, at year 1, although only one maintained this at 4 years post-intervention. (4) Conclusions: hESC-RPE patches show evidence of continued pigmentation, with extension, to cover bare host basement membrane for up to 5 years post-implantation. There is evidence that this represents functional RPE on the patch and at the patch border where host RPE is absent. The measurements for thickness of hESC-RPE and BM suggest persistence of both layers at 5 years. No safety concerns were raised for the hypothetical risk of RPE migration, proliferation or tumour formation. Visual function also showed sustained improvement for 2 years in one subject and 5 years in the other subject.
Collapse
Affiliation(s)
- Lyndon da Cruz
- The London Project to Cure Blindness, ORBIT, Institute of Ophthalmology, University College London (UCL), London WC1E 6BT, UK; (L.d.C.); (O.G.); (B.N.); (P.C.)
- National Institute of Health and Care Research Biomedical Research Centre at Moorfields Eye Hospital NHS Foundation Trust, Institute of Ophthalmology, University College London (UCL), London WC1E 6BT, UK;
- Moorfields Eye Hospital NHS Foundation Trust, 162 City Road, London EC1V 2PD, UK
- Wellcome/EPSRC Centre for Interventional & Surgical Sciences (WEISS), Charles Bell House, London W1W 7TY, UK
| | - Taha Soomro
- The London Project to Cure Blindness, ORBIT, Institute of Ophthalmology, University College London (UCL), London WC1E 6BT, UK; (L.d.C.); (O.G.); (B.N.); (P.C.)
- National Institute of Health and Care Research Biomedical Research Centre at Moorfields Eye Hospital NHS Foundation Trust, Institute of Ophthalmology, University College London (UCL), London WC1E 6BT, UK;
- Moorfields Eye Hospital NHS Foundation Trust, 162 City Road, London EC1V 2PD, UK
| | - Odysseas Georgiadis
- The London Project to Cure Blindness, ORBIT, Institute of Ophthalmology, University College London (UCL), London WC1E 6BT, UK; (L.d.C.); (O.G.); (B.N.); (P.C.)
- National Institute of Health and Care Research Biomedical Research Centre at Moorfields Eye Hospital NHS Foundation Trust, Institute of Ophthalmology, University College London (UCL), London WC1E 6BT, UK;
- Moorfields Eye Hospital NHS Foundation Trust, 162 City Road, London EC1V 2PD, UK
| | - Britta Nommiste
- The London Project to Cure Blindness, ORBIT, Institute of Ophthalmology, University College London (UCL), London WC1E 6BT, UK; (L.d.C.); (O.G.); (B.N.); (P.C.)
| | - Mandeep S. Sagoo
- National Institute of Health and Care Research Biomedical Research Centre at Moorfields Eye Hospital NHS Foundation Trust, Institute of Ophthalmology, University College London (UCL), London WC1E 6BT, UK;
- Moorfields Eye Hospital NHS Foundation Trust, 162 City Road, London EC1V 2PD, UK
| | - Peter Coffey
- The London Project to Cure Blindness, ORBIT, Institute of Ophthalmology, University College London (UCL), London WC1E 6BT, UK; (L.d.C.); (O.G.); (B.N.); (P.C.)
- National Institute of Health and Care Research Biomedical Research Centre at Moorfields Eye Hospital NHS Foundation Trust, Institute of Ophthalmology, University College London (UCL), London WC1E 6BT, UK;
- Center for Stem Cell Biology and Engineering, Neuroscience Research Institute, University of California, Santa Barbara, CA 93106, USA
| |
Collapse
|
2
|
Al-Nawaiseh S, Krötz C, Rickmann A, Strack C, Germann A, von Briesen H, Szurman P, Schulz A, Stanzel BV. A rabbit model for outer retinal atrophy caused by surgical RPE removal. Graefes Arch Clin Exp Ophthalmol 2023; 261:2265-2280. [PMID: 36976356 PMCID: PMC10368565 DOI: 10.1007/s00417-023-06014-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 01/12/2023] [Accepted: 02/10/2023] [Indexed: 03/29/2023] Open
Abstract
PURPOSE We aimed to establish a rabbit model with retinal atrophy induced by an iatrogenic retinal pigment epithelium (RPE) removal, for future testing of the efficacy and safety of cell therapy strategies. METHODS A localized detachment of the retina from the RPE/choroid layer was created in 18 pigmented rabbits. The RPE was removed by scraping with a custom-made extendable loop instrument. The resulting RPE wound was observed over a time course of 12 weeks with optical coherence tomography and angiography. After 4 days (group 1) and 12 weeks (group 2), histology was done and staining with hematoxylin and eosin, as well as immunofluorescence performed to further investigate the effects of debridement on the RPE and the overlying retina. RESULTS Already after 4 days, we observed a closure of the RPE wound by proliferating RPE and microglia/macrophage cells forming a multilayered clump. This pattern continued over the observation time course of 12 weeks, whereby the inner and outer nuclear layer of the retina became atrophic. No neovascularization was observed in the angiograms or histology. The observed changes were limited to the site of the former RPE wound. CONCLUSIONS Localized surgical RPE removal induced an adjacent progressive retinal atrophy. Altering the natural course of this model may serve as a basis to test RPE cell therapeutics.
Collapse
Affiliation(s)
- Sami Al-Nawaiseh
- Eye Clinic Sulzbach, Knappschaft Hospital Saar, Sulzbach/Saar, Germany
| | - Christina Krötz
- Fraunhofer Institute for Biomedical Engineering, Sulzbach/Saar, Germany
| | | | - Claudine Strack
- Department of Ophthalmology, University of Bonn, Bonn, Germany
| | - Anja Germann
- Fraunhofer Institute for Biomedical Engineering, Sulzbach/Saar, Germany
| | - Hagen von Briesen
- Fraunhofer Institute for Biomedical Engineering, Sulzbach/Saar, Germany
| | - Peter Szurman
- Eye Clinic Sulzbach, Knappschaft Hospital Saar, Sulzbach/Saar, Germany
- Klaus Heimann Eye Research Institute (KHERI), Sulzbach/Saar, Germany
| | - André Schulz
- Eye Clinic Sulzbach, Knappschaft Hospital Saar, Sulzbach/Saar, Germany
- Fraunhofer Institute for Biomedical Engineering, Sulzbach/Saar, Germany
- Klaus Heimann Eye Research Institute (KHERI), Sulzbach/Saar, Germany
| | - Boris V Stanzel
- Eye Clinic Sulzbach, Knappschaft Hospital Saar, Sulzbach/Saar, Germany.
- Fraunhofer Institute for Biomedical Engineering, Sulzbach/Saar, Germany.
- Department of Ophthalmology, University of Bonn, Bonn, Germany.
- Klaus Heimann Eye Research Institute (KHERI), Sulzbach/Saar, Germany.
| |
Collapse
|
3
|
Shekari F, Abyadeh M, Meyfour A, Mirzaei M, Chitranshi N, Gupta V, Graham SL, Salekdeh GH. Extracellular Vesicles as reconfigurable therapeutics for eye diseases: Promises and hurdles. Prog Neurobiol 2023; 225:102437. [PMID: 36931589 DOI: 10.1016/j.pneurobio.2023.102437] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Accepted: 03/14/2023] [Indexed: 03/17/2023]
Abstract
A large number of people worldwide suffer from visual impairment. However, most available therapies rely on impeding the development of a particular eye disorder. Therefore, there is an increasing demand for effective alternative treatments, specifically regenerative therapies. Extracellular vesicles, including exosomes, ectosomes, or microvesicles, are released by cells and play a potential role in regeneration. Following an introduction to EV biogenesis and isolation methods, this integrative review provides an overview of our current knowledge about EVs as a communication paradigm in the eye. Then, we focused on the therapeutic applications of EVs derived from conditioned medium, biological fluid, or tissue and highlighted some recent developments in strategies to boost the innate therapeutic potential of EVs by loading various kinds of drugs or being engineered at the level of producing cells or EVs. Challenges faced in the development of safe and effective translation of EV-based therapy into clinical settings for eye diseases are also discussed to pave the road toward reaching feasible regenerative therapies required for eye-related complications.
Collapse
Affiliation(s)
- Faezeh Shekari
- Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran; Advanced Therapy Medicinal Product Technology Development Center (ATMP-TDC), Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran.
| | | | - Anna Meyfour
- Basic and Molecular Epidemiology of Gastrointestinal Disorders Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mehdi Mirzaei
- Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, North Ryde, Sydney, NSW, Australia
| | - Nitin Chitranshi
- Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, North Ryde, Sydney, NSW, Australia
| | - Vivek Gupta
- Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, North Ryde, Sydney, NSW, Australia
| | - Stuart L Graham
- Macquarie Medical School, Faculty of Medicine, Health and Human Sciences, Macquarie University, North Ryde, Sydney, NSW, Australia
| | | |
Collapse
|
4
|
Hydrogels to Support Transplantation of Human Embryonic Stem Cell-Derived Retinal Pigment Epithelial Cells. Brain Sci 2022; 12:brainsci12121620. [PMID: 36552081 PMCID: PMC9775591 DOI: 10.3390/brainsci12121620] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Revised: 11/17/2022] [Accepted: 11/18/2022] [Indexed: 11/29/2022] Open
Abstract
PURPOSE Retinal pigment epithelial (RPE) cells are highly specialized neural cells with several functions essential for vision. Progressive deterioration of RPE cells in elderly individuals can result in visual impairment and, ultimately, blinding disease. While human embryonic stem cell-derived RPE cell (hESC-RPE) growth conditions are generally harsher than those of cell lines, the subretinal transplantation of hESC-RPE is being clinically explored as a strategy to recover the damaged retina and improve vision. The cell-adhesion ability of the support is required for RPE transplantation, where pre-polarized cells can maintain specific functions on the scaffold. This work examined four typical biodegradable hydrogels as supports for hESC-RPE growth. METHODS Four biodegradable hydrogels were examined: gelatin methacryloyl (GelMA), hyaluronic acid methacryloyl (HAMA), alginate, and fibrin hydrogels. ARPE-19 and hESC-RPE cells were seeded onto the hydrogels separately, and the ability of these supports to facilitate adherence, proliferation, and homogeneous distribution of differentiated hESC-RPE cells was investigated. Furthermore, the hydrogel's subretinal bio-compatibility was assessed in vivo. RESULTS We showed that ARPE-19 and hESC-RPE cells adhered and proliferated only on the fibrin support. The monolayer formed when cells reached confluency, demonstrating the polygonal semblance, and revealing actin filaments that moved along the cytoplasm. The expression of tight junction proteins at cell interfaces on the 14th day of seeding demonstrated the barrier function of epithelial cells on polymeric surfaces and the interaction between cells. Moreover, the expression of proteins crucial for retinal functions and matrix production was positively affected by fibrin, with an increment of PEDF. Our in vivo investigation with fibrin hydrogels revealed high short-term subretinal biocompatibility. CONCLUSIONS The research of stem cell-based cell therapy for retinal degenerative diseases is more complicated than that of cell lines. Our results showed that fibrin is a suitable scaffold for hESC-RPE transplantation, which could be a new grafting material for tissue engineering RPE cells.
Collapse
|
5
|
Martínez-Gil N, Maneu V, Kutsyr O, Fernández-Sánchez L, Sánchez-Sáez X, Sánchez-Castillo C, Campello L, Lax P, Pinilla I, Cuenca N. Cellular and molecular alterations in neurons and glial cells in inherited retinal degeneration. Front Neuroanat 2022; 16:984052. [PMID: 36225228 PMCID: PMC9548552 DOI: 10.3389/fnana.2022.984052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 08/29/2022] [Indexed: 11/19/2022] Open
Abstract
Multiple gene mutations have been associated with inherited retinal dystrophies (IRDs). Despite the spectrum of phenotypes caused by the distinct mutations, IRDs display common physiopathology features. Cell death is accompanied by inflammation and oxidative stress. The vertebrate retina has several attributes that make this tissue vulnerable to oxidative and nitrosative imbalance. The high energy demands and active metabolism in retinal cells, as well as their continuous exposure to high oxygen levels and light-induced stress, reveal the importance of tightly regulated homeostatic processes to maintain retinal function, which are compromised in pathological conditions. In addition, the subsequent microglial activation and gliosis, which triggers the secretion of pro-inflammatory cytokines, chemokines, trophic factors, and other molecules, further worsen the degenerative process. As the disease evolves, retinal cells change their morphology and function. In disease stages where photoreceptors are lost, the remaining neurons of the retina to preserve their function seek out for new synaptic partners, which leads to a cascade of morphological alterations in retinal cells that results in a complete remodeling of the tissue. In this review, we describe important molecular and morphological changes in retinal cells that occur in response to oxidative stress and the inflammatory processes underlying IRDs.
Collapse
Affiliation(s)
- Natalia Martínez-Gil
- Department of Physiology, Genetics and Microbiology, University of Alicante, Alicante, Spain
| | - Victoria Maneu
- Department of Optics, Pharmacology and Anatomy, University of Alicante, Alicante, Spain
| | - Oksana Kutsyr
- Department of Physiology, Genetics and Microbiology, University of Alicante, Alicante, Spain
| | | | - Xavier Sánchez-Sáez
- Department of Physiology, Genetics and Microbiology, University of Alicante, Alicante, Spain
| | - Carla Sánchez-Castillo
- Department of Physiology, Genetics and Microbiology, University of Alicante, Alicante, Spain
| | - Laura Campello
- Department of Physiology, Genetics and Microbiology, University of Alicante, Alicante, Spain
| | - Pedro Lax
- Department of Physiology, Genetics and Microbiology, University of Alicante, Alicante, Spain
- Alicante Institute for Health and Biomedical Research (ISABIAL), Alicante, Spain
| | - Isabel Pinilla
- Aragón Institute for Health Research (IIS Aragón), Zaragoza, Spain
- Department of Ophthalmology, Lozano Blesa University Hospital, Zaragoza, Spain
- Department of Surgery, University of Zaragoza, Zaragoza, Spain
- Isabel Pinilla,
| | - Nicolás Cuenca
- Department of Physiology, Genetics and Microbiology, University of Alicante, Alicante, Spain
- Alicante Institute for Health and Biomedical Research (ISABIAL), Alicante, Spain
- Institute Ramón Margalef, University of Alicante, Alicante, Spain
- *Correspondence: Nicolás Cuenca,
| |
Collapse
|
6
|
Soroushzadeh S, Karamali F, Masaeli E, Atefi A, Nasr Esfahani MH. Scaffold free retinal pigment epithelium sheet engineering using modified alginate-RGD hydrogel. J Biosci Bioeng 2022; 133:579-586. [PMID: 35339352 DOI: 10.1016/j.jbiosc.2022.02.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 01/30/2022] [Accepted: 02/02/2022] [Indexed: 11/16/2022]
Abstract
Tissue-specific extracellular matrix (ECM) plays a critical role in cell survival and homeostasis, which are particularly essential for directing differentiation of different complex tissues such as retina. However, ECM maintenance should be considered to design an effective therapeutic strategy for retina regeneration. To achieve this, cell sheet engineering has emerged as a growing approach to closely reconstruct basal membrane of cells through a scaffold-free manner. Several irreversible sight-threatening diseases are characterized by the dysfunction and lose of retinal pigment epithelium (RPE), leading to vision loss and eventually total blindness in patients. According to impressive developments in achievement of RPE from human embryonic stem cells (hESCs), we obtained RPE cells without any extrinsic factors in a co-culture system, and cultured them on a temporary alginate hydrogel substrate. Subsequently, Arg-Gly-Asp (RGD) peptide was superficially immobilized on the upper layer of hydrogel to improve cell attachment before harvesting sheet layer. RPE cell sheet layer was released by treating pre-seeded hydrogels with sodium citrate as a calcium chelating agent and characterized in both in vitro and in vivo models. RPE sheets formed tight junction and expressed high levels of retina structural markers such as ZO-1, Bestrophin and Collagen type IV. One week after in vivo transplantation of RPE sheet, cells survived in the subretinal space, indicating that our harvesting method is non-invasive. To sum up, we introduced a unique scaffold-free method for RPE cell sheet engineering, which can find potential use for future therapeutic purposes.
Collapse
Affiliation(s)
- Sareh Soroushzadeh
- ACECR Institute of Higher Education (Isfahan Branch), P.O. Box: 84175443, Iran; Department of Animal Biotechnology, Cell Science Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, P.O. Box 8159358686, Iran
| | - Fereshteh Karamali
- Department of Animal Biotechnology, Cell Science Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, P.O. Box 8159358686, Iran
| | - Elahe Masaeli
- Department of Animal Biotechnology, Cell Science Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, P.O. Box 8159358686, Iran
| | - Atefeh Atefi
- Department of Animal Biotechnology, Cell Science Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, P.O. Box 8159358686, Iran
| | - Mohammad Hossein Nasr Esfahani
- Department of Animal Biotechnology, Cell Science Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, P.O. Box 8159358686, Iran.
| |
Collapse
|
7
|
Bruch's-Mimetic Nanofibrous Membranes Functionalized with the Integrin-Binding Peptides as a Promising Approach for Human Retinal Pigment Epithelium Cell Transplantation. Molecules 2022; 27:molecules27041429. [PMID: 35209218 PMCID: PMC8874486 DOI: 10.3390/molecules27041429] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 01/02/2022] [Accepted: 01/27/2022] [Indexed: 02/06/2023] Open
Abstract
Background: This study aimed to develop an ultrathin nanofibrous membrane able to, firstly, mimic the natural fibrous architecture of human Bruch’s membrane (BM) and, secondly, promote survival of retinal pigment epithelial (RPE) cells after surface functionalization of fibrous membranes. Methods: Integrin-binding peptides (IBPs) that specifically interact with appropriate adhesion receptors on RPEs were immobilized on Bruch’s-mimetic membranes to promote coverage of RPEs. Surface morphologies, Fourier-transform infrared spectroscopy spectra, contact angle analysis, Alamar Blue assay, live/dead assay, immunofluorescence staining, and scanning electron microscopy were used to evaluate the outcome. Results: Results showed that coated membranes maintained the original morphology of nanofibers. After coating with IBPs, the water contact angle of the membrane surfaces varied from 92.38 ± 0.67 degrees to 20.16 ± 0.81 degrees. RPE cells seeded on IBP-coated membranes showed the highest viability at all time points (Day 1, p < 0.05; Day 3, p < 0.01; Days 7 and 14, p < 0.001). The proliferation rate of RPE cells on uncoated poly(ε-caprolactone) (PCL) membranes was significantly lower than that of IBP-coated membranes (p < 0.001). SEM images showed a well-organized hexa/polygonal monolayer of RPE cells on IBP-coated membranes. RPE cells proliferated rapidly, contacted, and became confluent. RPE cells formed a tight adhesion with nanofibers under high-magnification SEM. Our findings confirmed that the IBP-coated PCL membrane improved the attachment, proliferation, and viability of RPE cells. In addition, in this study, we used serum-free culture for RPE cells and short IBPs without immunogenicity to prevent graft rejection and immunogenicity during transplantation. Conclusions: These results indicated that the biomimic BM-IBP-RPE nanofibrous graft might be a new, practicable approach to increase the success rate of RPE cell transplantation.
Collapse
|
8
|
Neroeva NV, Neroev VV, Katargina LA, Ryabina MV, Ilyukhin PA, Karmokova AG, Losanova OA, Maybogin AM, Kharitonov AE, Eremeev AV, Lagarkova MA. [Experimental stem cell replacement transplantation in retinal pigment epithelium atrophy]. Vestn Oftalmol 2022; 138:7-15. [PMID: 35801874 DOI: 10.17116/oftalma20221380317] [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] [Indexed: 06/15/2023]
Abstract
PURPOSE To develop and evaluate the results of the modified surgical technique for transplantation of retinal pigment epithelium (RPE) differentiated from human induced pluripotent stem cells (iPSC-RPE) in the form of a cell suspension into the subretinal space of rabbits with previously induced RPE atrophy. MATERIAL AND METHODS The study was conducted on 10 New Zealand albino rabbits (20 eyes). One month after modeling RPE atrophy and retinal degeneration, rabbits were subjected to subretinal transplantation of iPSC-RPE cells in the form of a cell suspension. To prevent reflux of iPSC-RPE into the vitreal cavity, the injection site was sealed with 2-3 drops of autologous platelet-rich plasma (PRP). All rabbits underwent spectral optical coherence tomography (SOCT) and autofluorescence studies on the Heidelberg Spectralis system («Heidelberg Engineering», Germany). Enucleated animal eyes were studied with morphological and immunohistochemical methods. RESULTS In this study we developed and evaluated a modified surgical technique of transplantation of iPSC-RPE in the form of a cell suspension into the subretinal space of rabbits with induced RPE atrophy. It was found that the use of PRP helps seal the defect and prevents cell suspension reflux into the vitreous cavity, effectively minimizing intra- and postoperative complications. Morphological in vivo study and examination of histological sections showed that implantable iPSC-RPEs were correctly integrated and adhered to the choroid in the surgery site. Immunohistochemical analysis involving fluorescence-marked antibodies confirmed the survival of iPSC-RPE integrated into the retina of model animals. CONCLUSION This method improves the technology of iPSC-RPE transplantation on preclinical stages of the study, revealing new prospects in the treatment of degenerative diseases of the retina and the possibility of a personalized approach.
Collapse
Affiliation(s)
- N V Neroeva
- Helmholtz National Medical Research Center of Eye Diseases, Moscow, Russia
| | - V V Neroev
- Helmholtz National Medical Research Center of Eye Diseases, Moscow, Russia
| | - L A Katargina
- Helmholtz National Medical Research Center of Eye Diseases, Moscow, Russia
| | - M V Ryabina
- Helmholtz National Medical Research Center of Eye Diseases, Moscow, Russia
| | - P A Ilyukhin
- Helmholtz National Medical Research Center of Eye Diseases, Moscow, Russia
| | - A G Karmokova
- Helmholtz National Medical Research Center of Eye Diseases, Moscow, Russia
| | - O A Losanova
- Helmholtz National Medical Research Center of Eye Diseases, Moscow, Russia
| | - A M Maybogin
- Helmholtz National Medical Research Center of Eye Diseases, Moscow, Russia
| | - A E Kharitonov
- Federal Research and Clinical Center of Physical-Chemical Medicine, Moscow, Russia
| | - A V Eremeev
- Federal Research and Clinical Center of Physical-Chemical Medicine, Moscow, Russia
| | - M A Lagarkova
- Federal Research and Clinical Center of Physical-Chemical Medicine, Moscow, Russia
| |
Collapse
|
9
|
Khan AZ, Utheim TP, Jackson CJ, Tønseth KA, Eidet JR. Concise Review: Considering Optimal Temperature for Short-Term Storage of Epithelial Cells. Front Med (Lausanne) 2021; 8:686774. [PMID: 34485330 PMCID: PMC8416270 DOI: 10.3389/fmed.2021.686774] [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: 03/31/2021] [Accepted: 07/08/2021] [Indexed: 11/23/2022] Open
Abstract
Transplantation of novel tissue-engineered products using cultured epithelial cells is gaining significant interest. While such treatments can readily be provided at centralized medical centers, delivery to patients at geographically remote locations requires the establishment of suitable storage protocols. One important aspect of storage technology is temperature. This paper reviews storage temperature for above-freezing point storage of human epithelial cells for regenerative medicine purposes. The literature search uncovered publications on epidermal cells, retinal pigment epithelial cells, conjunctival epithelial cells, corneal/limbal epithelial cells, oral keratinocytes, and seminiferous epithelial cells. The following general patterns were noted: (1) Several studies across different cell types inclined toward 4 and 16°C being suitable short-term storage temperatures. Correspondingly, almost all studies investigating 37°C concluded that this storage temperature was suboptimal. (2) Cell death typically escalates rapidly following 7–10 days of storage. (3) The importance of the type of storage medium and its composition was highlighted by some of the studies; however, the relative importance of storage medium vs. storage temperature has not been investigated systematically. Although a direct comparison between the included investigations is not reasonable due to differences in cell types, storage media, and storage duration, this review provides an overview, summarizing the work carried out on each cell type during the past two decades.
Collapse
Affiliation(s)
- Ayyad Zartasht Khan
- Department of Medical Biochemistry, Oslo University Hospital, Oslo, Norway.,Department of Surgery, Sørlandet Hospital Arendal, Arendal, Norway.,Department of Ophthalmology, Sørlandet Hospital Arendal, Arendal, Norway.,Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Tor Paaske Utheim
- Department of Medical Biochemistry, Oslo University Hospital, Oslo, Norway.,Department of Ophthalmology, Sørlandet Hospital Arendal, Arendal, Norway.,Department of Oral Biology, Faculty of Dentistry, University of Oslo, Oslo, Norway.,Department of Ophthalmology, Stavanger University Hospital, Stavanger, Norway.,Department of Plastic and Reconstructive Surgery, Oslo University Hospital, Oslo, Norway.,Department of Ophthalmology, Oslo University Hospital, Oslo, Norway
| | - Catherine Joan Jackson
- Department of Medical Biochemistry, Oslo University Hospital, Oslo, Norway.,Department of Oral Biology, Faculty of Dentistry, University of Oslo, Oslo, Norway.,Ifocus Eye Clinic, Haugesund, Norway
| | - Kim Alexander Tønseth
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway.,Department of Plastic and Reconstructive Surgery, Oslo University Hospital, Oslo, Norway
| | - Jon Roger Eidet
- Department of Ophthalmology, Oslo University Hospital, Oslo, Norway
| |
Collapse
|
10
|
Burri C, Al-Nawaiseh S, Wakili P, Salzmann S, Krötz C, Považay B, Meier C, Frenz M, Szurman P, Schulz A, Stanzel B. Selective Large-Area Retinal Pigment Epithelial Removal by Microsecond Laser in Preparation for Cell Therapy. Transl Vis Sci Technol 2021; 10:17. [PMID: 34842907 PMCID: PMC8631056 DOI: 10.1167/tvst.10.10.17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Accepted: 10/16/2021] [Indexed: 11/25/2022] Open
Abstract
Purpose Cell therapy is a promising treatment for retinal pigment epithelium (RPE)-associated eye diseases such as age-related macular degeneration. Herein, selective microsecond laser irradiation targeting RPE cells was used for minimally invasive, large-area RPE removal in preparation for delivery of retinal cell therapeutics. Methods Ten rabbit eyes were exposed to laser pulses 8, 12, 16, and 20 µs in duration (wavelength, 532 nm; top-hat beam profile, 223 × 223 µm²). Post-irradiation retinal changes were assessed with fluorescein angiography (FA), indocyanine green angiography (ICGA), and optical coherence tomography (OCT). RPE viability was evaluated with an angiographic probit model. Following vitrectomy, a subretinal injection of balanced salt solution was performed over a lasered (maximum 13.6 mm2) and untreated control area. Bleb retinal detachment (bRD) morphology was then evaluated by intraoperative OCT. Results Within 1 hour after irradiation, laser lesions showed FA and ICGA leakage. OCT revealed that large-area laser damage was limited to the RPE. The angiographic median effective dose irradiation thresholds (ED50) were 45 µJ (90 mJ/cm2) at 8 µs, 52 µJ (104 mJ/cm2) at 12 µs, 59 µJ (118 mJ/cm2) at 16 µs, and 71 µJ (142 mJ/cm2) at 20 µs. Subretinal injection over the lasered area resulted in a controlled, shallow bRD rise, whereas control blebs were convex in shape, with less predictable spread. Conclusions Large-area, laser-based removal of host RPE without visible photoreceptor damage is possible and facilitates surgical retinal detachment. Translational Relevance Selective microsecond laser-based, large-area RPE removal prior to retinal cell therapy may reduce iatrogenic trauma.
Collapse
Affiliation(s)
- Christian Burri
- Institute for Human Centered Engineering (HuCE)–optoLab, Bern University of Applied Sciences, Biel, Switzerland
- Biomedical Photonics Group, Institute of Applied Physics, University of Bern, Bern, Switzerland
| | - Sami Al-Nawaiseh
- Eye Clinic Sulzbach, Knappschaft Hospital Saar, Sulzbach, Saar, Germany
- Department of Ophthalmology, University of Münster, Münster, Germany
| | - Philip Wakili
- Eye Clinic Sulzbach, Knappschaft Hospital Saar, Sulzbach, Saar, Germany
| | - Simon Salzmann
- Institute for Human Centered Engineering (HuCE)–optoLab, Bern University of Applied Sciences, Biel, Switzerland
| | - Christina Krötz
- Fraunhofer Institute for Biomedical Engineering, Sulzbach, Saar, Germany
| | - Boris Považay
- Institute for Human Centered Engineering (HuCE)–optoLab, Bern University of Applied Sciences, Biel, Switzerland
| | - Christoph Meier
- Institute for Human Centered Engineering (HuCE)–optoLab, Bern University of Applied Sciences, Biel, Switzerland
| | - Martin Frenz
- Biomedical Photonics Group, Institute of Applied Physics, University of Bern, Bern, Switzerland
| | - Peter Szurman
- Eye Clinic Sulzbach, Knappschaft Hospital Saar, Sulzbach, Saar, Germany
- Klaus Heimann Eye Research Institute, Sulzbach, Saar, Germany
| | - André Schulz
- Eye Clinic Sulzbach, Knappschaft Hospital Saar, Sulzbach, Saar, Germany
- Klaus Heimann Eye Research Institute, Sulzbach, Saar, Germany
| | - Boris Stanzel
- Eye Clinic Sulzbach, Knappschaft Hospital Saar, Sulzbach, Saar, Germany
- Klaus Heimann Eye Research Institute, Sulzbach, Saar, Germany
| |
Collapse
|
11
|
Francelin C, Godoy J, Qi X, Silva JAF, Grant MB, Boulton ME. Characterizing temporal and spatial recruitment of systemically administered RPE65-programmed bone marrow-derived cells to the retina in a mouse model of age-related macular degeneration. Graefes Arch Clin Exp Ophthalmol 2021; 259:2987-2994. [PMID: 34357416 PMCID: PMC8478769 DOI: 10.1007/s00417-021-05358-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 06/23/2021] [Accepted: 07/27/2021] [Indexed: 11/26/2022] Open
Abstract
PURPOSE Previously, we reported that the intravenous injection of bone marrow-derived cells (BMDC) infected with lentivirus expressing the human RPE65 gene resulted in the programming of BMDC to promote visual recovery in a mouse model of age-related macular degeneration (AMD). The aim of this study was to characterize the spatial and temporal recruitment of these programmed BMDC to the retinal pigment epithelial (RPE) layer. METHODS C57BL/6J female mice received a subretinal injection of AAV1-SOD2 ribozyme to knock down (KD) superoxide dismutase 2 (SOD2) and induce AMD-like pathology. BMDC were isolated from GFP+ mice and infected with a lentivirus expressing RPE65. One month after SOD2 KD, fifty thousand GFP+ RPE65-BMDC were injected in the mouse tail vein. Animals were terminated at different time points up to 60 min following cell administration, and localization of GFP+ cells was determined by fluorescence microscopy of neural retina and RPE flat mounts and tissue sections. RESULTS GFP+ RPE65- BMDC were observed in SOD2 KD neural retina and RPE as early as 1 min following administration. With increasing time, the number of cells in the neural retina decreased, while those in the RPE increased. While the number of cells in peripheral and central retina remained similar at each time point, the number of BMDC recruited to the central RPE increased in a time-dependent manner up to a maximum by 60 min post administration. Immunohistochemistry of cross-sections of the RPE layer confirmed the incorporation of donor GFP+ BMDC into the RPE layer and that these GFP+ human RPE65 expressing cells co-localized with murine RPE65. No GFP+ cells were observed in the neural retina or RPE layer of normal uninjured control eyes. CONCLUSIONS Our study shows that systemically administered GFP+ RPE65-BMDC can reach the retina within minutes and that the majority of these BMDC are recruited to the injured RPE layer by 60 min post injection.
Collapse
Affiliation(s)
- Carolina Francelin
- Department of Ophthalmology and Visual Sciences, University of Alabama At Birmingham, 1670 University Boulevard, Birmingham, AL, 35233, USA.
| | - Juliana Godoy
- Department of Ophthalmology and Visual Sciences, University of Alabama At Birmingham, 1670 University Boulevard, Birmingham, AL, 35233, USA
- Department of Hemotherapy and Cellular Therapy, Hospital Israelita Albert Einstein, São Paulo, SP, Brazil
| | - Xiaoping Qi
- Department of Ophthalmology and Visual Sciences, University of Alabama At Birmingham, 1670 University Boulevard, Birmingham, AL, 35233, USA
| | - Juliete A F Silva
- Department of Ophthalmology and Visual Sciences, University of Alabama At Birmingham, 1670 University Boulevard, Birmingham, AL, 35233, USA
| | - Maria B Grant
- Department of Ophthalmology and Visual Sciences, University of Alabama At Birmingham, 1670 University Boulevard, Birmingham, AL, 35233, USA
| | - Michael E Boulton
- Department of Ophthalmology and Visual Sciences, University of Alabama At Birmingham, 1670 University Boulevard, Birmingham, AL, 35233, USA.
| |
Collapse
|
12
|
Limnios IJ, Chau YQ, Skabo SJ, Surrao DC, O'Neill HC. Efficient differentiation of human embryonic stem cells to retinal pigment epithelium under defined conditions. Stem Cell Res Ther 2021; 12:248. [PMID: 33883023 PMCID: PMC8058973 DOI: 10.1186/s13287-021-02316-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2021] [Accepted: 03/30/2021] [Indexed: 11/11/2022] Open
Abstract
Abstract Age-related macular degeneration (AMD) is a highly prevalent form of blindness caused by loss death of cells of the retinal pigment epithelium (RPE). Transplantation of pluripotent stem cell (PSC)-derived RPE cells is considered a promising therapy to regenerate cell function and vision. Objective The objective of this study is to develop a rapid directed differentiation method for production of RPE cells from PSC which is rapid, efficient, and fully defined and produces cells suitable for clinical use. Design A protocol for cell growth and differentiation from hESCs was developed to induce differentiation through screening small molecules which regulated a primary stage of differentiation to the eyefield progenitor, and then, a subsequent set of molecules to drive differentiation to RPE cells. Methods for cell plating and maintenance have been optimized to give a homogeneous population of cells in a short 14-day period, followed by a procedure to support maturation of cell function. Results We show here the efficient production of RPE cells from human embryonic stem cells (hESCs) using small molecules in a feeder-free system using xeno-free/defined medium. Flow cytometry at day 14 showed ~ 90% of cells expressed the RPE markers MITF and PMEL17. Temporal gene analysis confirmed differentiation through defined cell intermediates. Mature hESC-RPE cell monolayers exhibited key morphological, molecular, and functional characteristics of the endogenous RPE. Conclusion This study identifies a novel cell differentiation process for rapid and efficient production of retinal RPE cells directly from hESCs. The described protocol has utility for clinical-grade cell production for human therapy to treat AMD. Supplementary Information The online version contains supplementary material available at 10.1186/s13287-021-02316-7.
Collapse
Affiliation(s)
- Ioannis J Limnios
- Clem Jones Centre for Regenerative Medicine, Bond University, Gold Coast, Queensland, 4229, Australia.
| | - Yu-Qian Chau
- Clem Jones Centre for Regenerative Medicine, Bond University, Gold Coast, Queensland, 4229, Australia
| | - Stuart J Skabo
- Clem Jones Centre for Regenerative Medicine, Bond University, Gold Coast, Queensland, 4229, Australia
| | - Denver C Surrao
- Clem Jones Centre for Regenerative Medicine, Bond University, Gold Coast, Queensland, 4229, Australia
| | - Helen C O'Neill
- Clem Jones Centre for Regenerative Medicine, Bond University, Gold Coast, Queensland, 4229, Australia.
| |
Collapse
|
13
|
Kim J, Park JY, Kong JS, Lee H, Won JY, Cho DW. Development of 3D Printed Bruch's Membrane-Mimetic Substance for the Maturation of Retinal Pigment Epithelial Cells. Int J Mol Sci 2021; 22:ijms22031095. [PMID: 33499245 PMCID: PMC7865340 DOI: 10.3390/ijms22031095] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 01/20/2021] [Accepted: 01/21/2021] [Indexed: 12/15/2022] Open
Abstract
Retinal pigment epithelium (RPE) is a monolayer of the pigmented cells that lies on the thin extracellular matrix called Bruch's membrane. This monolayer is the main component of the outer blood-retinal barrier (BRB), which plays a multifunctional role. Due to their crucial roles, the damage of this epithelium causes a wide range of diseases related to retinal degeneration including age-related macular degeneration, retinitis pigmentosa, and Stargardt disease. Unfortunately, there is presently no cure for these diseases. Clinically implantable RPE for humans is under development, and there is no practical examination platform for drug development. Here, we developed porcine Bruch's membrane-derived bioink (BM-ECM). Compared to conventional laminin, the RPE cells on BM-ECM showed enhanced functionality of RPE. Furthermore, we developed the Bruch's membrane-mimetic substrate (BMS) via the integration of BM-ECM and 3D printing technology, which revealed structure and extracellular matrix components similar to those of natural Bruch's membrane. The developed BMS facilitated the appropriate functions of RPE, including barrier and clearance functions, the secretion of anti-angiogenic growth factors, and enzyme formation for phototransduction. Moreover, it could be used as a basement frame for RPE transplantation. We established BMS using 3D printing technology to grow RPE cells with functions that could be used for an in vitro model and RPE transplantation.
Collapse
Affiliation(s)
- Jongmin Kim
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Korea; (J.K.); (J.Y.P.); (H.L.)
| | - Ju Young Park
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Korea; (J.K.); (J.Y.P.); (H.L.)
| | - Jeong Sik Kong
- School of Interdisciplinary Bioscience and Bioengineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Korea;
| | - Hyungseok Lee
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Korea; (J.K.); (J.Y.P.); (H.L.)
- Department of Mechanical and Biomedical Engineering, Kangwon National University, Chuncheon 24341, Korea
| | - Jae Yon Won
- Department of Ophthalmology and Visual Science, Eunpyeong St. Mary’s Hospital, The Catholic University of Korea, Seoul 03312, Korea
- Catholic Institute for Visual Science, College of Medicine, The Catholic University of Korea, Seoul 14662, Korea
- Correspondence: (J.Y.W.); (D.W.C.)
| | - Dong Woo Cho
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Korea; (J.K.); (J.Y.P.); (H.L.)
- School of Interdisciplinary Bioscience and Bioengineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Korea;
- Institute of Convergence Science, Yonsei University, Seoul 03722, Korea
- Correspondence: (J.Y.W.); (D.W.C.)
| |
Collapse
|
14
|
Inhibition of PARP activity improves therapeutic effect of ARPE-19 transplantation in RCS rats through decreasing photoreceptor death. Exp Eye Res 2021; 204:108448. [PMID: 33484702 DOI: 10.1016/j.exer.2021.108448] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 01/06/2021] [Accepted: 01/11/2021] [Indexed: 01/19/2023]
Abstract
Photoreceptor (PR) dysfunction or death is the key pathological change in retinal degeneration (RD). The death of PRs might be due to a primary change in PRs themselves or secondary to the dysfunction of the retinal pigment epithelium (RPE). Poly(ADP-ribose) polymerase (PARP) was reported to be involved in primary PR death, but whether it plays a role in PR death secondary to RPE dysfunction has not been determined. To clarify this question and develop a new therapeutic approach, we studied the changes in PAR/PARP in the RCS rat, a RD model, and tested the effect of PARP intervention when given alone or in combination with RPE cell transplantation. The results showed that poly(ADP-ribosyl)ation of proteins was increased in PRs undergoing secondary death in RCS rats, and this result was confirmed by the observation of similar changes in sodium iodate (SI)-induced secondary RD in SD rats. The increase in PAR/PARP was highly associated with increased apoptotic PRs and decreased visual function, as represented by lowered b-wave amplitudes on electroretinogram (ERG). Then, as we expected, when the RCS rats were treated with subretinal injection of the PARP inhibitor PJ34, the RD process was delayed. Furthermore, when PJ34 was given simultaneously with subretinal ARPE-19 cell transplantation, the therapeutic effects were significantly improved and lasted longer than those of ARPE-19 or PJ34 treatment alone. These results provide a potential new approach for treating RD.
Collapse
|
15
|
Subramaniam MD, Iyer M, Nair AP, Venkatesan D, Mathavan S, Eruppakotte N, Kizhakkillach S, Chandran MK, Roy A, Gopalakrishnan AV, Vellingiri B. Oxidative stress and mitochondrial transfer: A new dimension towards ocular diseases. Genes Dis 2020; 9:610-637. [PMID: 35782976 PMCID: PMC9243399 DOI: 10.1016/j.gendis.2020.11.020] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2020] [Revised: 09/18/2020] [Accepted: 11/27/2020] [Indexed: 12/12/2022] Open
Abstract
Ocular cells like, retinal pigment epithelium (RPE) is a highly specialized pigmented monolayer of post-mitotic cells, which is located in the posterior segment of the eye between neuro sensory retina and vascular choroid. It functions as a selective barrier and nourishes retinal visual cells. As a result of high-level oxygen consumption of retinal cells, RPE cells are vulnerable to chronic oxidative stress and an increased level of reactive oxygen species (ROS) generated from mitochondria. These oxidative stress and ROS generation in retinal cells lead to RPE degeneration. Various sources including mtDNA damage could be an important factor of oxidative stress in RPE. Gene therapy and mitochondrial transfer studies are emerging fields in ocular disease research. For retinal degenerative diseases stem cell-based transplantation methods are developed from basic research to preclinical and clinical trials. Translational research contributions of gene and cell therapy would be a new strategy to prevent, treat and cure various ocular diseases. This review focuses on the effect of oxidative stress in ocular cell degeneration and recent translational researches on retinal degenerative diseases to cure blindness.
Collapse
Affiliation(s)
- Mohana Devi Subramaniam
- SN ONGC Department of Genetics and Molecular Biology, Vision Research Foundation, Chennai 600006, Tamil Nadu, India
- Corresponding author.
| | - Mahalaxmi Iyer
- SN ONGC Department of Genetics and Molecular Biology, Vision Research Foundation, Chennai 600006, Tamil Nadu, India
- Department of Zoology, Avinashilingam Institute for Home Science and Higher Education for Women, Coimbatore 641 043, Tamil Nadu, India
| | - Aswathy P. Nair
- SN ONGC Department of Genetics and Molecular Biology, Vision Research Foundation, Chennai 600006, Tamil Nadu, India
| | - Dhivya Venkatesan
- Human Molecular Cytogenetics and Stem Cell Laboratory, Department of Human Genetics and Molecular Biology, Bharathiar University, Coimbatore 641046, Tamil Nadu, India
| | - Sinnakaruppan Mathavan
- SN ONGC Department of Genetics and Molecular Biology, Vision Research Foundation, Chennai 600006, Tamil Nadu, India
| | - Nimmisha Eruppakotte
- Human Molecular Cytogenetics and Stem Cell Laboratory, Department of Human Genetics and Molecular Biology, Bharathiar University, Coimbatore 641046, Tamil Nadu, India
| | - Soumya Kizhakkillach
- Human Molecular Cytogenetics and Stem Cell Laboratory, Department of Human Genetics and Molecular Biology, Bharathiar University, Coimbatore 641046, Tamil Nadu, India
| | - Manoj kumar Chandran
- Human Molecular Cytogenetics and Stem Cell Laboratory, Department of Human Genetics and Molecular Biology, Bharathiar University, Coimbatore 641046, Tamil Nadu, India
| | - Ayan Roy
- Department of Biotechnology, Lovely Professional University, Punjab 144411, India
| | - Abilash Valsala Gopalakrishnan
- Department of Biomedical Sciences, School of Bio Sciences and Technology (SBST), Vellore Institute of Technology (VIT), Vellore 600127, India
| | - Balachandar Vellingiri
- Human Molecular Cytogenetics and Stem Cell Laboratory, Department of Human Genetics and Molecular Biology, Bharathiar University, Coimbatore 641046, Tamil Nadu, India
- Corresponding author. Human Molecular Cytogenetics and Stem Cell, Laboratory, Department of Human Genetics and Molecular Biology, Bharathiar University, Coimbatore 641 046, Tamil Nadu, India.Fax: +91 422 2422387.
| |
Collapse
|
16
|
Rim MA, Choi JH, Park A, Youn J, Lee S, Kim NE, Song JE, Khang G. Characterization of Gelatin/Gellan Gum/Glycol Chitosan Ternary Hydrogel for Retinal Pigment Epithelial Tissue Reconstruction Materials. ACS APPLIED BIO MATERIALS 2020; 3:6079-6087. [PMID: 35021836 DOI: 10.1021/acsabm.0c00672] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The cellular transplantation approach to treat damaged or diseased retina is limited because of poor survival, distribution, and integration of cells after implantation to the sub-retinal space. To overcome this, it is important to develop a cell delivery system. In this study, a ternary hydrogel of gelatin (Ge)/gellan gum (GG)/glycol chitosan (CS) is suggested as a cell carrier for retinal tissue engineering (TE). Physicochemical properties such as porosity, swelling, sol fraction, and weight loss were measured. The mechanical study was performed with compressive strength and viscosity to confirm applicability in retinal TE. An in vitro experiment was carried out by encapsulating ARPE-19 in the designed hydrogel to measure viability and expression of retinal pigment epithelium-specific proteins and genes. The results showed that the ternary hydrogel system improves the mechanical properties and stability of the composite. Cell growth, survival, adhesion, and migration were enhanced as the CS was incorporated into the matrix. In particular, real-time polymerase chain reaction analysis showed a markedly improved specific gene expression rate in the Ge/GG/CS. Therefore, it is expected that the ternary system suggested in this study can be used as a promising material for retinal TE.
Collapse
Affiliation(s)
- Min A Rim
- Department of BIN Convergence Technology, Department of Polymer Nano Science & Technology and Polymer BIN Research Center, Jeonbuk National University, Deokjin-gu, Jeonju-si, Jeollabuk-do 54896, Republic of Korea
| | - Joo Hee Choi
- Department of BIN Convergence Technology, Department of Polymer Nano Science & Technology and Polymer BIN Research Center, Jeonbuk National University, Deokjin-gu, Jeonju-si, Jeollabuk-do 54896, Republic of Korea
| | - Ain Park
- Department of BIN Convergence Technology, Department of Polymer Nano Science & Technology and Polymer BIN Research Center, Jeonbuk National University, Deokjin-gu, Jeonju-si, Jeollabuk-do 54896, Republic of Korea
| | - Jina Youn
- Department of BIN Convergence Technology, Department of Polymer Nano Science & Technology and Polymer BIN Research Center, Jeonbuk National University, Deokjin-gu, Jeonju-si, Jeollabuk-do 54896, Republic of Korea
| | - Sumi Lee
- Department of BIN Convergence Technology, Department of Polymer Nano Science & Technology and Polymer BIN Research Center, Jeonbuk National University, Deokjin-gu, Jeonju-si, Jeollabuk-do 54896, Republic of Korea
| | - Na Eun Kim
- Department of BIN Convergence Technology, Department of Polymer Nano Science & Technology and Polymer BIN Research Center, Jeonbuk National University, Deokjin-gu, Jeonju-si, Jeollabuk-do 54896, Republic of Korea
| | - Jeong Eun Song
- Department of BIN Convergence Technology, Department of Polymer Nano Science & Technology and Polymer BIN Research Center, Jeonbuk National University, Deokjin-gu, Jeonju-si, Jeollabuk-do 54896, Republic of Korea
| | - Gilson Khang
- Department of BIN Convergence Technology, Department of Polymer Nano Science & Technology and Polymer BIN Research Center, Jeonbuk National University, Deokjin-gu, Jeonju-si, Jeollabuk-do 54896, Republic of Korea
| |
Collapse
|
17
|
Phelan MA, Kruczek K, Wilson JH, Brooks MJ, Drinnan CT, Regent F, Gerstenhaber JA, Swaroop A, Lelkes PI, Li T. Soy Protein Nanofiber Scaffolds for Uniform Maturation of Human Induced Pluripotent Stem Cell-Derived Retinal Pigment Epithelium. Tissue Eng Part C Methods 2020; 26:433-446. [PMID: 32635833 DOI: 10.1089/ten.tec.2020.0072] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Retinal pigment epithelium (RPE) differentiated from human induced pluripotent stem cells, called induced retinal pigment epithelium (iRPE), is being explored as a cell-based therapy for the treatment of retinal degenerative diseases, especially age-related macular degeneration. The success of RPE implantation is linked to the use of biomimetic scaffolds that simulate Bruch's membrane and promote RPE maturation and integration as a functional tissue. Due to difficulties associated with animal protein-derived scaffolds, including sterility and pro-inflammatory responses, current practices favor the use of synthetic polymers, such as polycaprolactone (PCL), for generating nanofibrous scaffolds. In this study, we tested the hypothesis that plant protein-derived fibrous scaffolds can provide favorable conditions permissive for the maturation of RPE tissue sheets in vitro. Our natural, soy protein-derived nanofibrous scaffolds exhibited a J-shaped stress-strain curve that more closely resembled the mechanical properties of native tissues than PCL with significantly higher hydrophilicity of the natural scaffolds, favoring in vivo implantation. We then demonstrate that iRPE sheets growing on these soy protein scaffolds are equivalent to iRPE monolayers cultured on synthetic PCL nanofibrous scaffolds. Immunohistochemistry demonstrated RPE-like morphology and functionality with appropriate localization of RPE markers RPE65, PMEL17, Ezrin, and ZO1 and with anticipated histotypic polarization of vascular endothelial growth factor and pigment epithelium-derived growth factor as indicated by enzyme-linked immunosorbent assay. Scanning electron microscopy revealed dense microvilli on the cell surface and homogeneous tight junctional contacts between the cells. Finally, comparative transcriptome analysis in conjunction with principal component analysis demonstrated that iRPE on nanofibrous scaffolds, either natural or synthetic, matured more consistently than on nonfibrous substrates. Taken together, our studies suggest that the maturation of cultured iRPE sheets for subsequent clinical applications might benefit from the use of nanofibrous scaffolds generated from natural proteins. Impact statement Induced retinal pigment epithelium (iRPE) from patient-derived induced pluripotent stem cells (iPSCs) may yield powerful treatments of retinal diseases, including age-related macular degeneration. Recent studies, including early human clinical trials, demonstrate the importance of selecting appropriate biomaterial scaffolds to support tissue-engineered iRPE sheets during implantation. Electrospun scaffolds show particular promise due to their similarity to the structure of the native Bruch's membrane. In this study, we describe the use of electroprocessed nanofibrous soy protein scaffolds to generate polarized sheets of human iPSC-derived iRPE sheets. Our evaluation, including RNA-seq transcriptomics, indicates that these scaffolds are viable alternatives to scaffolds electrospun from synthetic polymers.
Collapse
Affiliation(s)
- Michael A Phelan
- Neurobiology, Neurodegeneration and Repair Laboratory, National Eye Institute, National Institutes of Health, Bethesda, Maryland, USA
- Integrated Laboratory for Cellular Tissue Engineering and Regenerative Medicine, Department of Bioengineering, College of Engineering, Temple University, Philadelphia, Pennsylvania, USA
| | - Kamil Kruczek
- Neurobiology, Neurodegeneration and Repair Laboratory, National Eye Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - John H Wilson
- Neurobiology, Neurodegeneration and Repair Laboratory, National Eye Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Matthew J Brooks
- Neurobiology, Neurodegeneration and Repair Laboratory, National Eye Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Charles T Drinnan
- Neurobiology, Neurodegeneration and Repair Laboratory, National Eye Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Florian Regent
- Neurobiology, Neurodegeneration and Repair Laboratory, National Eye Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Jonathan A Gerstenhaber
- Integrated Laboratory for Cellular Tissue Engineering and Regenerative Medicine, Department of Bioengineering, College of Engineering, Temple University, Philadelphia, Pennsylvania, USA
| | - Anand Swaroop
- Neurobiology, Neurodegeneration and Repair Laboratory, National Eye Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Peter I Lelkes
- Integrated Laboratory for Cellular Tissue Engineering and Regenerative Medicine, Department of Bioengineering, College of Engineering, Temple University, Philadelphia, Pennsylvania, USA
| | - Tiansen Li
- Neurobiology, Neurodegeneration and Repair Laboratory, National Eye Institute, National Institutes of Health, Bethesda, Maryland, USA
| |
Collapse
|
18
|
Singh MS, Park SS, Albini TA, Canto-Soler MV, Klassen H, MacLaren RE, Takahashi M, Nagiel A, Schwartz SD, Bharti K. Retinal stem cell transplantation: Balancing safety and potential. Prog Retin Eye Res 2020; 75:100779. [PMID: 31494256 PMCID: PMC7056514 DOI: 10.1016/j.preteyeres.2019.100779] [Citation(s) in RCA: 117] [Impact Index Per Article: 29.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Revised: 08/29/2019] [Accepted: 09/02/2019] [Indexed: 12/14/2022]
Abstract
Stem cell transplantation holds great promise as a potential treatment for currently incurable retinal degenerative diseases that cause poor vision and blindness. Recently, safety data have emerged from several Phase I/II clinical trials of retinal stem cell transplantation. These clinical trials, usually run in partnership with academic institutions, are based on sound preclinical studies and are focused on patient safety. However, reports of serious adverse events arising from cell therapy in other poorly regulated centers have now emerged in the lay and scientific press. While progress in stem cell research for blindness has been greeted with great enthusiasm by patients, scientists, doctors and industry alike, these adverse events have raised concerns about the safety of retinal stem cell transplantation and whether patients are truly protected from undue harm. The aim of this review is to summarize and appraise the safety of human retinal stem cell transplantation in the context of its potential to be developed into an effective treatment for retinal degenerative diseases.
Collapse
Affiliation(s)
- Mandeep S Singh
- Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA.
| | - Susanna S Park
- Department of Ophthalmology & Vision Science, University of California-Davis Eye Center, Sacramento, CA, 95817, USA
| | - Thomas A Albini
- Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami, FL, 33136, USA
| | - M Valeria Canto-Soler
- CellSight Ocular Stem Cell and Regeneration Research Program, Department of Ophthalmology, Sue Anschutz-Rodgers Eye Center, University of Colorado School of Medicine, Aurora, CO, 80045, USA
| | - Henry Klassen
- Gavin Herbert Eye Institute and Stem Cell Research Center, Irvine, CA, 92697, USA
| | - Robert E MacLaren
- Nuffield Laboratory of Ophthalmology, Department of Clinical Neurosciences, University of Oxford and Oxford University Eye Hospital, NHS Foundation Trust, NIHR Biomedical Research Centre, Oxford, OX3 9DU, UK
| | - Masayo Takahashi
- Laboratory for Retinal Regeneration, Center for Biosystems Dynamics Research, RIKEN, Kobe, Hyogo, 650-0047, Japan
| | - Aaron Nagiel
- The Vision Center, Department of Surgery, Children's Hospital Los Angeles, Los Angeles, CA, 90027, USA; USC Roski Eye Institute, Keck School of Medicine, University of Southern California, Los Angeles, CA, 90007, USA
| | - Steven D Schwartz
- Stein Eye Institute, University of California Los Angeles Geffen School of Medicine, Los Angeles, CA, 90095, USA; Edythe and Eli Broad Stem Cell Institute, University of California Los Angeles, Los Angeles, CA, 90095, USA
| | - Kapil Bharti
- National Eye Institute, National Institutes of Health, Bethesda, MD, 90892, USA
| |
Collapse
|
19
|
Vitillo L, Tovell VE, Coffey P. Treatment of Age-Related Macular Degeneration with Pluripotent Stem Cell-Derived Retinal Pigment Epithelium. Curr Eye Res 2019; 45:361-371. [DOI: 10.1080/02713683.2019.1691237] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Loriana Vitillo
- The London Project to Cure Blindness, Institute of Ophthalmology, University College London (UCL), London, UK
| | - Victoria E. Tovell
- The London Project to Cure Blindness, Institute of Ophthalmology, University College London (UCL), London, UK
| | - Pete Coffey
- The London Project to Cure Blindness, Institute of Ophthalmology, University College London (UCL), London, UK
- Center for Stem Cell Biology and Engineering, University of California Santa Barbara, Santa Barbara, CA, USA
- NIHR Biomedical Research Centre at Moorfields Eye Hospital NHS Foundation Trust, UCL Institute of Ophthalmology, London, UK
| |
Collapse
|
20
|
Ben M’Barek K, Habeler W, Regent F, Monville C. Developing Cell-Based Therapies for RPE-Associated Degenerative Eye Diseases. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1186:55-97. [DOI: 10.1007/978-3-030-28471-8_3] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
|
21
|
CHOROIDAL STRUCTURAL CHANGES AND VASCULARITY INDEX IN STARGARDT DISEASE ON SWEPT SOURCE OPTICAL COHERENCE TOMOGRAPHY. Retina 2019; 38:2395-2400. [PMID: 29016459 DOI: 10.1097/iae.0000000000001879] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
PURPOSE To evaluate structural changes in the choroid of patients with Stargardt disease using swept source optical coherence tomography scans. METHODS A retrospective comparison cohort study was conducted on 39 patients with Stargardt disease, and on 25 age and gender matched-healthy controls. Subfoveal choroidal thickness (SFCT) was computed from the swept source optical coherence tomography machine, and the scans were binarized into luminal area and stromal areas, which were then used to derive choroidal vascularity index (CVI). Choroidal vascularity index and SFCT were analyzed independently using linear mixed effects model. RESULTS There was no significant difference in SFCT between the 2 groups (347.20 ± 13.61 μm in Stargardt disease vs. 333.09 ± 18.96 μm in the control group, P = 0.548). There was a significant decrease in the CVI among eyes with Stargardt disease as compared with the normal eyes (62.51 ± 0.25% vs. 65.45 ± 0.29%, P < 0.001). There was a negative association between visual acuity and CVI (correlation coefficient = -0.75, P < 0.001) and a positive association between visual acuity and SFCT (correlation coefficient = 0.21, P = 0.035). CONCLUSION Choroidal vascularity index appears to be a more robust tool compared with SFCT for choroidal changes in Stargardt disease. Choroidal vascularity index can possibly be used as a surrogate marker for disease monitoring. A decrease in CVI was associated with a decrease in visual function in eyes with Stargardt disease.
Collapse
|
22
|
Cho SM, Lee J, Lee HB, Choi HJ, Ryu JE, Lee HJ, Park HK, Lee MJ, Lee J, Lee HJ, Kim HS, Lee JY, Son WC. Subretinal transplantation of human embryonic stem cell-derived retinal pigment epithelium (MA09-hRPE): A safety and tolerability evaluation in minipigs. Regul Toxicol Pharmacol 2019; 106:7-14. [PMID: 31009651 DOI: 10.1016/j.yrtph.2019.04.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 04/10/2019] [Accepted: 04/14/2019] [Indexed: 10/27/2022]
Abstract
This study aimed to determine the safety and tolerability of the subretinal injection of hESC-derived RPE cells at higher doses than the established clinical dose (5 × 104 cells/150 μL) by using minipigs. The hESC-derived RPE cells (60 or 120 × 104 cells/150 μL) were injected in subretinal region, and minipigs were sacrificed at Weeks 4, 8, and 12 post-surgery. Time-course examination was performed by using fundus photography, optical coherence tomography (OCT), histopathology, and fluorescence in situ hybridization (FISH). After surgery, retinal bleb and pigmentation were seen and retinal bleb became smaller gradually. In histopathology, cell clusters consisting of a uniform population of the round to oval cells were seen at the subretinal injection site. In immunohistochemistry, most of the cells were positive for anti-CD3 and CD45 antibodies but negative for anti-human nuclei antibody; transplanted cells were not detectable by DNA probe in FISH assay. Cell clusters were thought to be a host immune response to trauma or transplanted cells. There were no other changes related to subretinal RPE cell injection. These results suggested that subretinal injection of hESC-derived RPE cells (60 and 120 × 104 cells/150 μL) in minipigs is well-tolerated and safe.
Collapse
Affiliation(s)
- Sung-Min Cho
- Department of Pathology, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, Seoul, Republic of Korea.
| | - Junyeop Lee
- Department of Ophthalmology, Yeungnam University, College of Medicine, 170, Hyeonchung-ro, Nam-gu, Daegu, Republic of Korea.
| | - Han-Byul Lee
- Department of Pathology, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, Seoul, Republic of Korea.
| | - Hyun-Ji Choi
- Department of Pathology, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, Seoul, Republic of Korea.
| | - Jae-Eun Ryu
- Department of Pathology, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, Seoul, Republic of Korea.
| | - Hyo-Ju Lee
- Department of Pathology, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, Seoul, Republic of Korea.
| | - Hyun-Kyu Park
- Department of Pathology, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, Seoul, Republic of Korea.
| | - Min Ji Lee
- CHA Biotech, 335, Pangyo-ro, Bundang-gu, Seongnam, Republic of Korea.
| | - Juyoung Lee
- CHA Biotech, 335, Pangyo-ro, Bundang-gu, Seongnam, Republic of Korea.
| | - Hyun Jung Lee
- CHA Biotech, 335, Pangyo-ro, Bundang-gu, Seongnam, Republic of Korea.
| | - Hye Sun Kim
- CHA Biotech, 335, Pangyo-ro, Bundang-gu, Seongnam, Republic of Korea.
| | - Joo Yong Lee
- Department of Ophthalmology, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, Seoul, Republic of Korea.
| | - Woo-Chan Son
- Department of Pathology, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, Seoul, Republic of Korea; Department of Pathology, Asan Medical Center, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, Seoul, Republic of Korea.
| |
Collapse
|
23
|
Léveillard T, Klipfel L. Mechanisms Underlying the Visual Benefit of Cell Transplantation for the Treatment of Retinal Degenerations. Int J Mol Sci 2019; 20:ijms20030557. [PMID: 30696106 PMCID: PMC6387096 DOI: 10.3390/ijms20030557] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Revised: 01/23/2019] [Accepted: 01/24/2019] [Indexed: 12/13/2022] Open
Abstract
The transplantation of retinal cells has been studied in animals to establish proof of its potential benefit for the treatment of blinding diseases. Photoreceptor precursors have been grafted in animal models of Mendelian-inherited retinal degenerations, and retinal pigmented epithelial cells have been used to restore visual function in animal models of age-related macular degeneration (AMD) and recently in patients. Cell therapy over corrective gene therapy in inherited retinal degeneration can overcome the genetic heterogeneity by providing one treatment for all genetic forms of the diseases. In AMD, the existence of multiple risk alleles precludes a priori the use of corrective gene therapy. Mechanistically, the experiments of photoreceptor precursor transplantation reveal the importance of cytoplasmic material exchange between the grafted cells and the host cells for functional rescue, an unsuspected mechanism and novel concept. For transplantation of retinal pigmented epithelial cells, the mechanisms behind the therapeutic benefit are only partially understood, and clinical trials are ongoing. The fascinating studies that describe the development of methodologies to produce cells to be grafted and demonstrate the functional benefit for vision are reviewed.
Collapse
Affiliation(s)
- Thierry Léveillard
- Department of Genetics, Sorbonne Université, INSERM, CNRS, Institut de la Vision, 17 rue Moreau, F-75012 Paris, France.
| | - Laurence Klipfel
- Department of Genetics, Sorbonne Université, INSERM, CNRS, Institut de la Vision, 17 rue Moreau, F-75012 Paris, France.
| |
Collapse
|
24
|
Cheng SC, Wu YH, Huang WC, Pang JHS, Huang TH, Cheng CY. Anti-inflammatory property of quercetin through downregulation of ICAM-1 and MMP-9 in TNF-α-activated retinal pigment epithelial cells. Cytokine 2019; 116:48-60. [PMID: 30685603 DOI: 10.1016/j.cyto.2019.01.001] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Revised: 12/29/2018] [Accepted: 01/02/2019] [Indexed: 12/24/2022]
Abstract
Quercetin is a flavonoid polyphenolic compound present in fruits and vegetables that has proven anti-inflammatory activity. The goal of the present investigation was to investigate the effects of quercetin on tumor necrosis factor-α (TNF-α)-induced inflammatory responses via the expression of ICAM-1 and MMP-9 in human retinal pigment epithelial cells (ARPE-19 cells). Real-time PCR, gelatin zymography, and Western blot analysis showed that TNF-α induced the expression of ICAM-1 and MMP-9 protein and mRNA in a time-dependent manner. These effects were attenuated by pretreatment of ARPE-19 cells with quercetin. Quercetin inhibited the TNF-α-induced phosphorylation of PKCδ, JNK1/2, ERK1/2. Quercetin, rottlerin, SP600125 and U0126 attenuated TNF-α-stimulated c-Jun phosphorylation and AP-1-Luc activity. Pretreatment with quercetin, rottlerin, SP600125, or Bay 11-7082 attenuated TNF-α-induced NF-κB (p65) phosphorylation, translocation and RelA/p65-Luc activity. TNF-α significantly increased MMP-9 promoter activity and THP-1 cell adherence, and these effects were attenuated by pretreatment with quercetin, rottlerin, SP600125, U0126, tanshinone IIA or Bay 11-7082. These results suggest that quercetin attenuates TNF-α-induced ICAM-1 and MMP-9 expression in ARPE-19 cells via the MEK1/2-ERK1/2 and PKCδ-JNK1/2-c-Jun or NF-κB pathways.
Collapse
Affiliation(s)
- Shu-Chen Cheng
- Department of Traditional Chinese Medicine, Chang Gung Memorial Hospital, Taoyuan, Taiwan; Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Yi-Hong Wu
- Division of Chinese Internal Medicine, Center for Traditional Chinese Medicine, Chang Gung Memorial Hospital, Taoyuan, Taiwan; School of Traditional Chinese Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Wen-Chung Huang
- Graduate Institute of Health Industry Technology, Research Center for Chinese Herbal Medicine and Research Center for Food and Cosmetic Safety, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan, Taiwan; Division of Allergy, Asthma, and Rheumatology, Department of Pediatrics, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Jong-Hwei S Pang
- Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan; Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Tse-Hung Huang
- School of Traditional Chinese Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan; Department of Traditional Chinese Medicine, Chang Gung Memorial Hospital, Keelung, Taiwan
| | - Ching-Yi Cheng
- Graduate Institute of Health Industry Technology, Research Center for Chinese Herbal Medicine and Research Center for Food and Cosmetic Safety, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan, Taiwan; Department of Traditional Chinese Medicine, Chang Gung Memorial Hospital, Keelung, Taiwan; Department of Ophthalmology, Chang Gung Memorial Hospital, Linkou, Taiwan.
| |
Collapse
|
25
|
Cell Therapy for Retinal Dystrophies: From Cell Suspension Formulation to Complex Retinal Tissue Bioengineering. Stem Cells Int 2019; 2019:4568979. [PMID: 30809263 PMCID: PMC6364130 DOI: 10.1155/2019/4568979] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Accepted: 01/01/2019] [Indexed: 12/25/2022] Open
Abstract
Retinal degeneration is an irreversible phenomenon caused by various disease conditions including age-related macular degeneration (AMD) and retinitis pigmentosa (RP). During the course of these diseases, photoreceptors (PRs) are susceptible to degeneration due to their malfunctions or to a primary dysfunction of the retinal pigment epithelium (RPE). Once lost, these cells could not be endogenously regenerated in humans, and cell therapy to replace the lost cells is one of the promising strategies to recover vision. Depending on the nature of the primary defect and the stage of the disease, RPE cells, PRs, or both might be transplanted to achieve therapeutic effects. We describe in this review the current knowledge and recent progress to develop such approaches. The different cell sources proposed for cell therapy including human pluripotent stem cells are presented with their advantages and limits. Another critical aspect described herein is the pharmaceutical formulation of the end product to be delivered into the eye of patients. Finally, we also outline the future research directions in order to develop a complex multilayered retinal tissue for end-stage patients.
Collapse
|
26
|
Sheremet NL, Mikaelyan AA, Andreev AY, Kiselev SL. [Possibilities of treating retinal diseases in patients with damaged retinal pigment epithelium]. Vestn Oftalmol 2019; 135:226-234. [PMID: 31691665 DOI: 10.17116/oftalma2019135052226] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Retinal diseases associated with damage to retinal pigment epithelium (PPE) are the most frequent causes of irreversible loss of vision in adults. Since there is no therapeutic treatment available that could repair RPE and its connections with the adjacent photoreceptors, the review focuses on various methods of surgical treatment. One of the most promising methods at present is the use of stem cells derivatives. Results of numerous experimental and clinical trials show that use of human induced pluripotent stem cells in the treatment of degenerative diseases of the retina can be considered effective and promising.
Collapse
Affiliation(s)
- N L Sheremet
- Research Institute of Eye Diseases, 11A Rossolimo St., Moscow, Russian Federation, 119021
| | - A A Mikaelyan
- Research Institute of Eye Diseases, 11A Rossolimo St., Moscow, Russian Federation, 119021
| | - A Yu Andreev
- Krasnogorsk City Hospital #1, 4 Karbisheva St., Krasnogorsk, Moscow region, Russian Federation, 143403
| | - S L Kiselev
- Vavilov Institute of General Genetics, 3 Gubkina St., Moscow, Russian Federation, 119333
| |
Collapse
|
27
|
Tian Y, Davis R, Zonca MR, Stern JH, Temple S, Xie Y. Screening and optimization of potential injection vehicles for storage of retinal pigment epithelial stem cell before transplantation. J Tissue Eng Regen Med 2018; 13:76-86. [DOI: 10.1002/term.2770] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2018] [Revised: 07/27/2018] [Accepted: 10/18/2018] [Indexed: 12/15/2022]
Affiliation(s)
- Yangzi Tian
- Colleges of Nanoscale Science and Engineering; SUNY Polytechnic Institute; Albany New York
| | - Richard Davis
- Department of Retina Research; Neural Stem Cell Institute; Rensselaer New York
| | - Michael R. Zonca
- Colleges of Nanoscale Science and Engineering; SUNY Polytechnic Institute; Albany New York
| | - Jeffrey H. Stern
- Department of Retina Research; Neural Stem Cell Institute; Rensselaer New York
| | - Sally Temple
- Department of Retina Research; Neural Stem Cell Institute; Rensselaer New York
| | - Yubing Xie
- Colleges of Nanoscale Science and Engineering; SUNY Polytechnic Institute; Albany New York
| |
Collapse
|
28
|
Ben M'Barek K, Habeler W, Plancheron A, Jarraya M, Regent F, Terray A, Yang Y, Chatrousse L, Domingues S, Masson Y, Sahel JA, Peschanski M, Goureau O, Monville C. Human ESC-derived retinal epithelial cell sheets potentiate rescue of photoreceptor cell loss in rats with retinal degeneration. Sci Transl Med 2018; 9:9/421/eaai7471. [PMID: 29263231 DOI: 10.1126/scitranslmed.aai7471] [Citation(s) in RCA: 68] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Revised: 01/06/2017] [Accepted: 11/06/2017] [Indexed: 12/11/2022]
Abstract
Replacing defective retinal pigment epithelial (RPE) cells with those derived from human embryonic stem cells (hESCs) or human-induced pluripotent stem cells (hiPSCs) is a potential strategy for treating retinal degenerative diseases. Early clinical trials have demonstrated that hESC-derived or hiPSC-derived RPE cells can be delivered safely as a suspension to the human eye. The next step is transplantation of hESC/hiPSC-derived RPE cells as cell sheets that are more physiological. We have developed a tissue-engineered product consisting of hESC-derived RPE cells grown as sheets on human amniotic membrane as a biocompatible substrate. We established a surgical approach to engraft this tissue-engineered product into the subretinal space of the eyes of rats with photoreceptor cell loss. We show that transplantation of the hESC-RPE cell sheets grown on a human amniotic membrane scaffold resulted in rescue of photoreceptor cell death and improved visual acuity in rats with retinal degeneration compared to hESC-RPE cells injected as a cell suspension. These results suggest that tissue-engineered hESC-RPE cell sheets produced under good manufacturing practice conditions may be a useful approach for treating diseases of retinal degeneration.
Collapse
Affiliation(s)
- Karim Ben M'Barek
- INSERM U861, I-Stem, Association Française contre les Myopathies (AFM), Institute for Stem Cell Therapy and Exploration of Monogenic Diseases, 91100 Corbeil-Essonnes, France.,UEVE U861, I-Stem, AFM, Institute for Stem Cell Therapy and Exploration of Monogenic Diseases, 91100 Corbeil-Essonnes, France.,CECS, I-Stem, AFM, Institute for Stem Cell Therapy and Exploration of Monogenic Diseases, 91100 Corbeil-Essonnes, France
| | - Walter Habeler
- INSERM U861, I-Stem, Association Française contre les Myopathies (AFM), Institute for Stem Cell Therapy and Exploration of Monogenic Diseases, 91100 Corbeil-Essonnes, France.,UEVE U861, I-Stem, AFM, Institute for Stem Cell Therapy and Exploration of Monogenic Diseases, 91100 Corbeil-Essonnes, France.,CECS, I-Stem, AFM, Institute for Stem Cell Therapy and Exploration of Monogenic Diseases, 91100 Corbeil-Essonnes, France
| | - Alexandra Plancheron
- INSERM U861, I-Stem, Association Française contre les Myopathies (AFM), Institute for Stem Cell Therapy and Exploration of Monogenic Diseases, 91100 Corbeil-Essonnes, France.,UEVE U861, I-Stem, AFM, Institute for Stem Cell Therapy and Exploration of Monogenic Diseases, 91100 Corbeil-Essonnes, France.,CECS, I-Stem, AFM, Institute for Stem Cell Therapy and Exploration of Monogenic Diseases, 91100 Corbeil-Essonnes, France
| | - Mohamed Jarraya
- Banque de tissus humain, Hôpital Saint Louis, AP-HP Paris, France
| | - Florian Regent
- INSERM U861, I-Stem, Association Française contre les Myopathies (AFM), Institute for Stem Cell Therapy and Exploration of Monogenic Diseases, 91100 Corbeil-Essonnes, France.,UEVE U861, I-Stem, AFM, Institute for Stem Cell Therapy and Exploration of Monogenic Diseases, 91100 Corbeil-Essonnes, France
| | - Angélique Terray
- Institut de la Vision, Sorbonne Universités, UPMC Univ Paris 06, INSERM, CNRS, 75012 Paris, France
| | - Ying Yang
- Institut de la Vision, Sorbonne Universités, UPMC Univ Paris 06, INSERM, CNRS, 75012 Paris, France.,CHNO des Quinze-Vingts, DHU Sight Restore, INSERM-DHOS CIC, 75012 Paris, France
| | - Laure Chatrousse
- INSERM U861, I-Stem, Association Française contre les Myopathies (AFM), Institute for Stem Cell Therapy and Exploration of Monogenic Diseases, 91100 Corbeil-Essonnes, France.,UEVE U861, I-Stem, AFM, Institute for Stem Cell Therapy and Exploration of Monogenic Diseases, 91100 Corbeil-Essonnes, France.,CECS, I-Stem, AFM, Institute for Stem Cell Therapy and Exploration of Monogenic Diseases, 91100 Corbeil-Essonnes, France
| | - Sophie Domingues
- INSERM U861, I-Stem, Association Française contre les Myopathies (AFM), Institute for Stem Cell Therapy and Exploration of Monogenic Diseases, 91100 Corbeil-Essonnes, France.,UEVE U861, I-Stem, AFM, Institute for Stem Cell Therapy and Exploration of Monogenic Diseases, 91100 Corbeil-Essonnes, France.,CECS, I-Stem, AFM, Institute for Stem Cell Therapy and Exploration of Monogenic Diseases, 91100 Corbeil-Essonnes, France
| | - Yolande Masson
- INSERM U861, I-Stem, Association Française contre les Myopathies (AFM), Institute for Stem Cell Therapy and Exploration of Monogenic Diseases, 91100 Corbeil-Essonnes, France.,UEVE U861, I-Stem, AFM, Institute for Stem Cell Therapy and Exploration of Monogenic Diseases, 91100 Corbeil-Essonnes, France.,CECS, I-Stem, AFM, Institute for Stem Cell Therapy and Exploration of Monogenic Diseases, 91100 Corbeil-Essonnes, France
| | - José-Alain Sahel
- Institut de la Vision, Sorbonne Universités, UPMC Univ Paris 06, INSERM, CNRS, 75012 Paris, France.,CHNO des Quinze-Vingts, DHU Sight Restore, INSERM-DHOS CIC, 75012 Paris, France.,Fondation Ophtalmologique Adolphe de Rothschild, 75019 Paris, France.,Department of Ophthalmology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA
| | - Marc Peschanski
- INSERM U861, I-Stem, Association Française contre les Myopathies (AFM), Institute for Stem Cell Therapy and Exploration of Monogenic Diseases, 91100 Corbeil-Essonnes, France.,UEVE U861, I-Stem, AFM, Institute for Stem Cell Therapy and Exploration of Monogenic Diseases, 91100 Corbeil-Essonnes, France.,CECS, I-Stem, AFM, Institute for Stem Cell Therapy and Exploration of Monogenic Diseases, 91100 Corbeil-Essonnes, France
| | - Olivier Goureau
- Institut de la Vision, Sorbonne Universités, UPMC Univ Paris 06, INSERM, CNRS, 75012 Paris, France.
| | - Christelle Monville
- INSERM U861, I-Stem, Association Française contre les Myopathies (AFM), Institute for Stem Cell Therapy and Exploration of Monogenic Diseases, 91100 Corbeil-Essonnes, France. .,UEVE U861, I-Stem, AFM, Institute for Stem Cell Therapy and Exploration of Monogenic Diseases, 91100 Corbeil-Essonnes, France
| |
Collapse
|
29
|
Pertile G, Mete M, Peroglio Deiro A, Guerriero M, Sartore M, Alfano A, Polito A. New Insights Into the Development and Progression of Geographic Atrophy After Full Thickness Autologous Choroidal Graft. ACTA ACUST UNITED AC 2018; 59:AMD93-AMD103. [DOI: 10.1167/iovs.18-24229] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Affiliation(s)
- Grazia Pertile
- Department of Ophthalmology, Sacro Cuore Don Calabria Hospital, Negrar, Verona, Italy
| | - Maurizio Mete
- Department of Ophthalmology, Sacro Cuore Don Calabria Hospital, Negrar, Verona, Italy
| | - Antonio Peroglio Deiro
- Department of Ophthalmology, Sacro Cuore Don Calabria Hospital, Negrar, Verona, Italy
- Department of Ophthalmology, San Gerardo Hospital, Monza, Milan, Italy
| | | | - Mauro Sartore
- Department of Ophthalmology, Sacro Cuore Don Calabria Hospital, Negrar, Verona, Italy
| | - Alessandro Alfano
- Department of Ophthalmology, Sacro Cuore Don Calabria Hospital, Negrar, Verona, Italy
| | - Antonio Polito
- Department of Ophthalmology, Sacro Cuore Don Calabria Hospital, Negrar, Verona, Italy
| |
Collapse
|
30
|
Bobba S, Di Girolamo N, Munsie M, Chen F, Pébay A, Harkin D, Hewitt AW, O'Connor M, McLenachan S, Shadforth AMA, Watson SL. The current state of stem cell therapy for ocular disease. Exp Eye Res 2018; 177:65-75. [PMID: 30029023 DOI: 10.1016/j.exer.2018.07.019] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Revised: 06/16/2018] [Accepted: 07/16/2018] [Indexed: 12/13/2022]
Abstract
Herein, we review the safety, efficacy, regulatory standards and ethical implications of the use of stem cells in ocular disease. A literature review was conducted, registered clinical trials reviewed, and expert opinions sought. Guidelines and codes of conduct from international societies and professional bodies were also reviewed. Collated data is presented on current progress in the field of ocular regenerative medicine, future challenges, the clinical trial process and ethical considerations in stem cell therapy. A greater understanding of the function and location of ocular stem cells has led to rapid advances in possible therapeutic applications. However, in the context of significant technical challenges and potential long-term complications, it is imperative that stem cell practices operate within formal clinical trial frameworks. While there remains broad scope for innovation, ongoing evidence-based review of potential interventions and the development of standardized protocols are necessary to ensure patient safety and best practice in ophthalmic care.
Collapse
Affiliation(s)
- Samantha Bobba
- Prince of Wales Hospital Clinical School, High Street, Randwick, Sydney, New South Wales, 2031, Australia.
| | - Nick Di Girolamo
- School of Medical Sciences, University of New South Wales, Kensington, Sydney, New South Wales, 2052, Australia
| | - Megan Munsie
- Centre for Stem Cell Systems, School of Biomedical Sciences, University of Melbourne, Parkville, Victoria, 3010, Australia
| | - Fred Chen
- Lions Eye Institute, 2 Verdun Street, Nedlands, Western Australia, 6009, Australia
| | - Alice Pébay
- Centre for Stem Cell Systems, School of Biomedical Sciences, University of Melbourne, Parkville, Victoria, 3010, Australia; Centre for Eye Research Australia, Level 7/32 Gisborne Street, East Melbourne, Victoria, 3002, Australia
| | - Damien Harkin
- School of Biomedical Sciences, Queensland University of Technology, 2 George Street, Brisbane, Queensland, 4000, Australia
| | - Alex W Hewitt
- Centre for Eye Research Australia, Level 7/32 Gisborne Street, East Melbourne, Victoria, 3002, Australia; School of Medicine, University of Tasmania, Churchill Avenue, Hobart, Tasmania, 7005, Australia
| | - Michael O'Connor
- School of Medicine, Western Sydney University, Victoria Road Parramatta, New South Wales, Parramatta, 2150, Australia
| | - Samuel McLenachan
- Centre for Ophthalmology and Visual Science, University of Western Australia, 35 Stirling Highway, Crawley, Western Australia, 6009, Australia
| | - Audra M A Shadforth
- School of Biomedical Sciences, Queensland University of Technology, 2 George Street, Brisbane, Queensland, 4000, Australia
| | - Stephanie L Watson
- Prince of Wales Hospital Clinical School, High Street, Randwick, Sydney, New South Wales, 2031, Australia; Save Sight Institute, University of Sydney, 8 Macquarie Street, Sydney, New South Wales, 2000, Australia; Sydney Eye Hospital, 8 Macquarie Street, Sydney, New South Wales, 2000, Australia.
| |
Collapse
|
31
|
Pasovic L, Utheim TP, Reppe S, Khan AZ, Jackson CJ, Thiede B, Berg JP, Messelt EB, Eidet JR. Improvement of Storage Medium for Cultured Human Retinal Pigment Epithelial Cells Using Factorial Design. Sci Rep 2018; 8:5688. [PMID: 29632395 PMCID: PMC5890280 DOI: 10.1038/s41598-018-24121-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Accepted: 03/26/2018] [Indexed: 12/19/2022] Open
Abstract
Storage of human retinal pigment epithelium (hRPE) can contribute to the advancement of cell-based RPE replacement therapies. The present study aimed to improve the quality of stored hRPE cultures by identifying storage medium additives that, alone or in combination, contribute to enhancing cell viability while preserving morphology and phenotype. hRPE cells were cultured in the presence of the silk protein sericin until pigmentation. Cells were then stored for 10 days in storage medium plus sericin and either one of 46 different additives. Individual effects of each additive on cell viability were assessed using epifluorescence microscopy. Factorial design identified promising additive combinations by extrapolating their individual effects. Supplementing the storage medium with sericin combined with adenosine, L-ascorbic acid and allopurinol resulted in the highest cell viability (98.6 ± 0.5%) after storage for three days, as measured by epifluorescence microscopy. Flow cytometry validated the findings. Proteomics identified 61 upregulated and 65 downregulated proteins in this storage group compared to the unstored control. Transmission electron microscopy demonstrated the presence of melanosomes after storage in the optimized medium. We conclude that the combination of adenosine, L-ascorbic acid, allopurinol and sericin in minimal essential medium preserves RPE pigmentation while maintaining cell viability during storage.
Collapse
Affiliation(s)
- L Pasovic
- Department of Medical Biochemistry, Oslo University Hospital, Oslo, Norway. .,Institute of Clinical Medicine, University of Oslo, Oslo, Norway. .,Department of Surgery, Akershus University Hospital, Lørenskog, Norway.
| | - T P Utheim
- Department of Medical Biochemistry, Oslo University Hospital, Oslo, Norway.,Department of Plastic and Reconstructive Surgery, Oslo University Hospital, Oslo, Norway.,Department of Ophthalmology, Oslo University Hospital, Oslo, Norway.,Department of Ophthalmology, Stavanger University Hospital, Stavanger, Norway.,Department of Clinical Medicine, Faculty of Medicine, University of Bergen, Bergen, Norway.,Department of Oral Biology, Faculty of Dentistry, University of Oslo, Oslo, Norway
| | - S Reppe
- Department of Medical Biochemistry, Oslo University Hospital, Oslo, Norway
| | - A Z Khan
- Department of Medical Biochemistry, Oslo University Hospital, Oslo, Norway.,Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - C J Jackson
- Department of Plastic and Reconstructive Surgery, Oslo University Hospital, Oslo, Norway.,Department of Oral Biology, Faculty of Dentistry, University of Oslo, Oslo, Norway
| | - B Thiede
- Department of Biosciences, University of Oslo, Oslo, Norway
| | - J P Berg
- Department of Medical Biochemistry, Oslo University Hospital, Oslo, Norway
| | - E B Messelt
- Department of Oral Biology, Faculty of Dentistry, University of Oslo, Oslo, Norway
| | - J R Eidet
- Department of Medical Biochemistry, Oslo University Hospital, Oslo, Norway.,Department of Ophthalmology, Oslo University Hospital, Oslo, Norway
| |
Collapse
|
32
|
Khan AZ, Utheim TP, Reppe S, Sandvik L, Lyberg T, Roald BBH, Ibrahim IB, Eidet JR. Cultured Human Retinal Pigment Epithelial (hRPE) Sheets: A Search for Suitable Storage Conditions. MICROSCOPY AND MICROANALYSIS : THE OFFICIAL JOURNAL OF MICROSCOPY SOCIETY OF AMERICA, MICROBEAM ANALYSIS SOCIETY, MICROSCOPICAL SOCIETY OF CANADA 2018; 24:147-155. [PMID: 29637873 DOI: 10.1017/s1431927618000144] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The advancement of human retinal pigment epithelial cell (hRPE) replacement therapy is partly dependent on optimization of cell culture, cell preservation, and storage medium. This study was undertaken to search for a suitable storage temperature and storage medium for hRPE. hRPE monolayer sheets were cultured under standard conditions at 37°C and then randomized for storage at six temperatures (4, 16, 20, 24, 28, and 37°C) for 7 days. After revealing a suitable storage temperature, hRPE sheets were subsequently stored with and without the silk protein sericin added to the storage medium. Live/dead assay, light microscopy, pH, and phenotypic expression of various proteins were used to assess cell cultures stored at different temperatures. After 7 days of storage, hRPE morphology was best preserved at 4°C. Addition of sericin to the storage medium maintained the characteristic morphology of the preserved cells, and improved pigmentation and levels of pigmentation-related proteins in the cultured hRPE sheets following a 7-day storage period at 4°C.
Collapse
Affiliation(s)
- Ayyad Z Khan
- 1Department of Medical Biochemistry,Oslo University Hospital,Kirkeveien 166,P.O. Box 4956,Nydalen,0424 Oslo,Norway
| | - Tor P Utheim
- 1Department of Medical Biochemistry,Oslo University Hospital,Kirkeveien 166,P.O. Box 4956,Nydalen,0424 Oslo,Norway
| | - Sjur Reppe
- 1Department of Medical Biochemistry,Oslo University Hospital,Kirkeveien 166,P.O. Box 4956,Nydalen,0424 Oslo,Norway
| | - Leiv Sandvik
- 10Department of Periodontology,Institute of Clinical Odontology, Faculty of Dentistry,University of Oslo,Sognsvannsveien 10,P.O. Box 1052,0316 Oslo,Norway
| | - Torstein Lyberg
- 1Department of Medical Biochemistry,Oslo University Hospital,Kirkeveien 166,P.O. Box 4956,Nydalen,0424 Oslo,Norway
| | - Borghild B-H Roald
- 2Institute of Clinical Medicine, Faculty of Medicine,University of Oslo,P.O. Box 1171,Blindern,0318 Oslo,Norway
| | - Ibrahim B Ibrahim
- 2Institute of Clinical Medicine, Faculty of Medicine,University of Oslo,P.O. Box 1171,Blindern,0318 Oslo,Norway
| | - Jon R Eidet
- 1Department of Medical Biochemistry,Oslo University Hospital,Kirkeveien 166,P.O. Box 4956,Nydalen,0424 Oslo,Norway
| |
Collapse
|
33
|
Lin28B promotes Müller glial cell de-differentiation and proliferation in the regenerative rat retinas. Oncotarget 2018; 7:49368-49383. [PMID: 27384999 PMCID: PMC5226514 DOI: 10.18632/oncotarget.10343] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Accepted: 06/13/2016] [Indexed: 01/21/2023] Open
Abstract
Retinal regeneration and repair are severely impeded in higher mammalian animals. Although Müller cells can be activated and show some characteristics of progenitor cells when injured or under pathological conditions, they quickly form gliosis scars. Unfortunately, the basic mechanisms that impede retinal regeneration remain unknown. We studied retinas from Royal College of Surgeon (RCS) rats and found that let-7 family molecules, let-7e and let-7i, were significantly overexpressed in Müller cells of degenerative retinas. It demonstrated that down-regulation of the RNA binding protein Lin28B was one of the key factors leading to the overexpression of let-7e and let-7i. Lin28B ectopic expression in the Müller cells suppressed overexpression of let-7e and let-7i, stimulated and mobilized Müller glia de-differentiation, proliferation, promoted neuronal commitment, and inhibited glial fate acquisition of de-differentiated Müller cells. ERG recordings revealed that the amplitudes of a-wave and b-wave were improved significantly after Lin28B was delivered into the subretinal space of RCS rats. In summary, down-regulation of Lin28B as well as up-regulation of let-7e and let-7i may be the main factors that impede Müller cell de-differentiation and proliferation in the retina of RCS rats.
Collapse
|
34
|
Ben M'Barek K, Habeler W, Monville C. Stem Cell-Based RPE Therapy for Retinal Diseases: Engineering 3D Tissues Amenable for Regenerative Medicine. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1074:625-632. [PMID: 29721996 DOI: 10.1007/978-3-319-75402-4_76] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Recent clinical trials based on human pluripotent stem cell-derived retinal pigment epithelium cells (hPSC-RPE cells) were clearly a success regarding safety outcomes. However the delivery strategy of a cell suspension, while being a smart implementation of a cell therapy, might not be sufficient to achieve the best results. More complex reconstructed tissue formulations are required, both to improve functionality and to target pathological conditions with altered Bruch's membrane like age-related macular degeneration (AMD). Herein, we describe the various options regarding the stem cell source choices and the different strategies elaborated in the recent years to develop engineered RPE sheets amenable for regenerative therapies.
Collapse
Affiliation(s)
- Karim Ben M'Barek
- INSERM UMR861, I-Stem, AFM, Corbeil-Essonnes, France.,UEVE UMR861, I-Stem, AFM, Corbeil-Essonnes, France.,CECS-I-Stem, AFM, Corbeil-Essonnes, France
| | - Walter Habeler
- INSERM UMR861, I-Stem, AFM, Corbeil-Essonnes, France.,UEVE UMR861, I-Stem, AFM, Corbeil-Essonnes, France.,CECS-I-Stem, AFM, Corbeil-Essonnes, France
| | - Christelle Monville
- INSERM UMR861, I-Stem, AFM, Corbeil-Essonnes, France. .,UEVE UMR861, I-Stem, AFM, Corbeil-Essonnes, France.
| |
Collapse
|
35
|
In situ regeneration of retinal pigment epithelium by gene transfer of E2F2: a potential strategy for treatment of macular degenerations. Gene Ther 2017; 24:810-818. [PMID: 29188796 DOI: 10.1038/gt.2017.89] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Revised: 08/29/2017] [Accepted: 08/30/2017] [Indexed: 02/07/2023]
Abstract
The retinal pigment epithelium (RPE) interacts closely with photoreceptors to maintain visual function. In degenerative diseases such as Stargardt disease and age-related macular degeneration, the leading cause of blindness in the developed world, RPE cell loss is followed by photoreceptor cell death. RPE cells can proliferate under certain conditions, suggesting an intrinsic regenerative potential, but so far this has not been utilised therapeutically. Here, we used E2F2 to induce RPE cell replication and thereby regeneration. In both young and old (2 and 18 month) wildtype mice, subretinal injection of non-integrating lentiviral vector expressing E2F2 resulted in 47% of examined RPE cells becoming BrdU positive. E2F2 induced an increase in RPE cell density of 17% compared with control vector-treated and 14% compared with untreated eyes. We also tested this approach in an inducible transgenic mouse model of RPE loss, generated through activation of diphtheria toxin-A gene. E2F2 expression resulted in a 10-fold increase in BrdU uptake and a 34% increase in central RPE cell density. Although in mice this localised rescue is insufficiently large to be demonstrable by electroretinography, a measure of massed retinal function, these results provide proof-of-concept for a strategy to induce in situ regeneration of RPE for the treatment of RPE degeneration.
Collapse
|
36
|
Fernandes RAB, Stefanini FR, Falabella P, Koss MJ, Wells T, Diniz B, Ribeiro R, Schor P, Maia M, Penha FM, Hinton DR, Tai YC, Humayun M. Development of a new tissue injector for subretinal transplantation of human embryonic stem cell derived retinal pigmented epithelium. Int J Retina Vitreous 2017; 3:41. [PMID: 29093829 PMCID: PMC5662097 DOI: 10.1186/s40942-017-0095-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Accepted: 09/26/2017] [Indexed: 11/23/2022] Open
Abstract
Background
Subretinal cell transplantation is a challenging surgical maneuver. This paper describes the preliminary findings of a new tissue injector for subretinal implantation of an ultrathin non-absorbable substrate seeded with human embryonic stem cell-derived retinal pigment epithelium (hESC-RPE). Methods Ultrathin Parylene-C substrates measuring 3.5 mm × 6.0 mm seeded with hESC-RPE (implant referred to as CPCB-RPE1) were implanted into the subretinal space of 12 Yucatan minipigs. Animals were euthanized immediately after the procedure and underwent spectral domain optical coherence tomography (SD-OCT) and histological analysis to assess the subretinal placement of the implant. Evaluation of the hESC-RPE cells seeded on the substrate was carried out before and after implantation using standard cell counting techniques. Results The tissue injector delivered the CPCB-RPE1 implant through a 1.5 mm sclerotomy and a 1.0–1.5 mm retinectomy. SD-OCT scans and histological examination revealed that substrates were precisely placed in the subretinal space, and that the hESC-RPE cell monolayer continued to cover the surface of the substrate after the surgical procedure. Conclusion This innovative tissue injector was able to efficiently deliver the implant in the subretinal space of Yucatan minipigs, preventing significant hESC-RPE cell loss, minimizing tissue trauma, surgical complications and postoperative inflammation.
Collapse
Affiliation(s)
- Rodrigo A Brant Fernandes
- Department of Ophthalmology, USC Roski Eye Institute, Keck School of Medicine, University of Southern California, Los Angeles, CA USA.,Department of Ophthalmology and Visual Sciences, Federal University of São Paulo, Rua Botucatu, 822, São Paulo, SP 04023-062 Brazil
| | - Francisco R Stefanini
- Department of Ophthalmology, USC Roski Eye Institute, Keck School of Medicine, University of Southern California, Los Angeles, CA USA.,Department of Ophthalmology and Visual Sciences, Federal University of São Paulo, Rua Botucatu, 822, São Paulo, SP 04023-062 Brazil
| | - Paulo Falabella
- Department of Ophthalmology, USC Roski Eye Institute, Keck School of Medicine, University of Southern California, Los Angeles, CA USA.,Department of Ophthalmology and Visual Sciences, Federal University of São Paulo, Rua Botucatu, 822, São Paulo, SP 04023-062 Brazil
| | - Michael J Koss
- Department of Ophthalmology, USC Roski Eye Institute, Keck School of Medicine, University of Southern California, Los Angeles, CA USA.,Augenzentrum Nymphenburger Hoefe, Herzog Carl Theodor Augenklinik, Munich, Germany
| | - Trent Wells
- Department of Ophthalmology, USC Roski Eye Institute, Keck School of Medicine, University of Southern California, Los Angeles, CA USA
| | - Bruno Diniz
- Department of Ophthalmology, USC Roski Eye Institute, Keck School of Medicine, University of Southern California, Los Angeles, CA USA.,Department of Ophthalmology and Visual Sciences, Federal University of São Paulo, Rua Botucatu, 822, São Paulo, SP 04023-062 Brazil
| | - Ramiro Ribeiro
- Department of Ophthalmology, USC Roski Eye Institute, Keck School of Medicine, University of Southern California, Los Angeles, CA USA.,Department of Ophthalmology and Visual Sciences, Federal University of São Paulo, Rua Botucatu, 822, São Paulo, SP 04023-062 Brazil
| | - Paulo Schor
- Department of Ophthalmology and Visual Sciences, Federal University of São Paulo, Rua Botucatu, 822, São Paulo, SP 04023-062 Brazil
| | - Mauricio Maia
- Department of Ophthalmology and Visual Sciences, Federal University of São Paulo, Rua Botucatu, 822, São Paulo, SP 04023-062 Brazil
| | - Fernando M Penha
- Department of Ophthalmology and Visual Sciences, Federal University of São Paulo, Rua Botucatu, 822, São Paulo, SP 04023-062 Brazil.,Fundação Universidade Regional de Blumenau, Blumenau, Santa Catarina Brazil
| | - David R Hinton
- Department of Ophthalmology, USC Roski Eye Institute, Keck School of Medicine, University of Southern California, Los Angeles, CA USA.,Department of Pathology, Keck School of Medicine, University of Southern California, Los Angeles, CA USA
| | - Yu-Chong Tai
- Electrical Engineering, California Institute of Technology, Pasadena, CA USA
| | - Mark Humayun
- Department of Ophthalmology, USC Roski Eye Institute, Keck School of Medicine, University of Southern California, Los Angeles, CA USA.,USC Institute for Biomedical Therapeutics, Keck School of Medicine, University of Southern California, Los Angeles, CA USA
| |
Collapse
|
37
|
Kole C, Klipfel L, Yang Y, Ferracane V, Blond F, Reichman S, Millet-Puel G, Clérin E, Aït-Ali N, Pagan D, Camara H, Delyfer MN, Nandrot EF, Sahel JA, Goureau O, Léveillard T. Otx2-Genetically Modified Retinal Pigment Epithelial Cells Rescue Photoreceptors after Transplantation. Mol Ther 2017; 26:219-237. [PMID: 28988713 PMCID: PMC5762984 DOI: 10.1016/j.ymthe.2017.09.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2015] [Revised: 08/17/2017] [Accepted: 09/03/2017] [Indexed: 12/13/2022] Open
Abstract
Inherited retinal degenerations are blinding diseases characterized by the loss of photoreceptors. Their extreme genetic heterogeneity complicates treatment by gene therapy. This has motivated broader strategies for transplantation of healthy retinal pigmented epithelium to protect photoreceptors independently of the gene causing the disease. The limited clinical benefit for visual function reported up to now is mainly due to dedifferentiation of the transplanted cells that undergo an epithelial-mesenchymal transition. We have studied this mechanism in vitro and revealed the role of the homeogene OTX2 in preventing dedifferentiation through the regulation of target genes. We have overexpressed OTX2 in retinal pigmented epithelial cells before their transplantation in the eye of a model of retinitis pigmentosa carrying a mutation in Mertk, a gene specifically expressed by retinal pigmented epithelial cells. OTX2 increases significantly the protection of photoreceptors as seen by histological and functional analyses. We observed that the beneficial effect of OTX2 is non-cell autonomous, and it is at least partly mediated by unidentified trophic factors. Transplantation of OTX2-genetically modified cells may be medically effective for other retinal diseases involving the retinal pigmented epithelium as age-related macular degeneration.
Collapse
Affiliation(s)
- Christo Kole
- INSERM, U968, Paris 75012, France; Sorbonne Universités, UPMC Univ Paris 06 UMR_S 968, Institut de la Vision, Paris 75012, France; CNRS, UMR_7210, Paris 75012, France
| | - Laurence Klipfel
- INSERM, U968, Paris 75012, France; Sorbonne Universités, UPMC Univ Paris 06 UMR_S 968, Institut de la Vision, Paris 75012, France; CNRS, UMR_7210, Paris 75012, France
| | - Ying Yang
- INSERM, U968, Paris 75012, France; Sorbonne Universités, UPMC Univ Paris 06 UMR_S 968, Institut de la Vision, Paris 75012, France; CNRS, UMR_7210, Paris 75012, France
| | - Vanessa Ferracane
- INSERM, U968, Paris 75012, France; Sorbonne Universités, UPMC Univ Paris 06 UMR_S 968, Institut de la Vision, Paris 75012, France; CNRS, UMR_7210, Paris 75012, France
| | - Frederic Blond
- INSERM, U968, Paris 75012, France; Sorbonne Universités, UPMC Univ Paris 06 UMR_S 968, Institut de la Vision, Paris 75012, France; CNRS, UMR_7210, Paris 75012, France
| | - Sacha Reichman
- INSERM, U968, Paris 75012, France; Sorbonne Universités, UPMC Univ Paris 06 UMR_S 968, Institut de la Vision, Paris 75012, France; CNRS, UMR_7210, Paris 75012, France
| | - Géraldine Millet-Puel
- INSERM, U968, Paris 75012, France; Sorbonne Universités, UPMC Univ Paris 06 UMR_S 968, Institut de la Vision, Paris 75012, France; CNRS, UMR_7210, Paris 75012, France
| | - Emmanuelle Clérin
- INSERM, U968, Paris 75012, France; Sorbonne Universités, UPMC Univ Paris 06 UMR_S 968, Institut de la Vision, Paris 75012, France; CNRS, UMR_7210, Paris 75012, France
| | - Najate Aït-Ali
- INSERM, U968, Paris 75012, France; Sorbonne Universités, UPMC Univ Paris 06 UMR_S 968, Institut de la Vision, Paris 75012, France; CNRS, UMR_7210, Paris 75012, France
| | - Delphine Pagan
- INSERM, U968, Paris 75012, France; Sorbonne Universités, UPMC Univ Paris 06 UMR_S 968, Institut de la Vision, Paris 75012, France; CNRS, UMR_7210, Paris 75012, France
| | - Hawa Camara
- INSERM, U968, Paris 75012, France; Sorbonne Universités, UPMC Univ Paris 06 UMR_S 968, Institut de la Vision, Paris 75012, France; CNRS, UMR_7210, Paris 75012, France
| | - Marie-Noëlle Delyfer
- INSERM, U968, Paris 75012, France; Sorbonne Universités, UPMC Univ Paris 06 UMR_S 968, Institut de la Vision, Paris 75012, France; CNRS, UMR_7210, Paris 75012, France; Unité Rétine, Uvéite et Neuro-Ophtalmologie, Département d'Ophtalmologie, Centre Hospitalier Universitaire de Bordeaux, Bordeaux, France
| | - Emeline F Nandrot
- INSERM, U968, Paris 75012, France; Sorbonne Universités, UPMC Univ Paris 06 UMR_S 968, Institut de la Vision, Paris 75012, France; CNRS, UMR_7210, Paris 75012, France
| | - Jose-Alain Sahel
- INSERM, U968, Paris 75012, France; Sorbonne Universités, UPMC Univ Paris 06 UMR_S 968, Institut de la Vision, Paris 75012, France; CNRS, UMR_7210, Paris 75012, France
| | - Olivier Goureau
- INSERM, U968, Paris 75012, France; Sorbonne Universités, UPMC Univ Paris 06 UMR_S 968, Institut de la Vision, Paris 75012, France; CNRS, UMR_7210, Paris 75012, France
| | - Thierry Léveillard
- INSERM, U968, Paris 75012, France; Sorbonne Universités, UPMC Univ Paris 06 UMR_S 968, Institut de la Vision, Paris 75012, France; CNRS, UMR_7210, Paris 75012, France.
| |
Collapse
|
38
|
Lu Y, Han L, Wang C, Dou H, Feng X, Hu Y, Feng K, Wang X, Ma Z. A comparison of autologous transplantation of retinal pigment epithelium (RPE) monolayer sheet graft with RPE-Bruch's membrane complex graft in neovascular age-related macular degeneration. Acta Ophthalmol 2017; 95:e443-e452. [PMID: 27496526 DOI: 10.1111/aos.13054] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2015] [Accepted: 02/07/2016] [Indexed: 01/25/2023]
Abstract
PURPOSE To compare the outcome after choroidal neovascular (CNV) membrane excision and retinal pigment epithelium (RPE) transplantation and make further evaluation of two types of RPE grafts on the visual function in patients with neovascular age-related macular degeneration (AMD), complicated by massive subretinal haemorrhage. METHODS We retrospectively reviewed 80 patients who underwent CNV membrane excision with or without RPE transplantation. Two types of RPE grafts were adopted, RPE-Bruch's membrane complex graft (subgroup 1) and RPE monolayer sheet graft (subgroup 2). Outcome measures included pre- and postoperative visual acuity score (VAS), clinical findings, complications and recurrence rates. RESULTS The mean VAS [Early Treatment of Diabetic Retinopathy Study (ETDRS)] in the CNV membrane excision group was 11.06 ± 18.28 at baseline and 14.41 ± 16.86 at follow-up (p = 0.12) in a mean follow-up period of 24.35 ± 9.31 months. While in subgroup 1, VAS increased from 22.62 ± 23.72 to 35.50 ± 24.46 (p = 0.02) in a mean period of 20.63 ± 6.25 months. The percentage of visual acuity (VA) improvement (at least two or more lines changed) in subgroup 1 is 62.5%, which is significantly higher than that in CNV excision group (23.5%), p = 0.02. In subgroup 2, VAS increased from 16.61 ± 27.98 to 29.16 ± 23.80 (p = 0.02) in a mean period of 21.72 ± 11.09 months. The percentage of VA improvement in subgroup 2 is 58.0%, which is also significantly higher than that in CNV excision group (23.5%), p = 0.02. Postoperative VA elevation was comparable between the two subgroups (p = 0.05). Complications including retinal detachment, proliferative vitreal retinopathy and CNV recurrence occurred in both techniques. Central fixation stability was observed in eight eyes in subgroup 1 and five eyes in subgroup 2. CONCLUSIONS The autologous RPE transplantation can increase the vision of patients with haemorrhagic AMD. Two types of autologous RPE grafts were both effective and comparable in restoring visual function and central fixation stability.
Collapse
Affiliation(s)
- Yao Lu
- Department of Ophthalmology; Key Laboratory of Vision Loss and Restoration; Ministry of Education; Peking University Third Hospital; Beijing China
| | - Liang Han
- Department of Ophthalmology; Key Laboratory of Vision Loss and Restoration; Ministry of Education; Peking University Third Hospital; Beijing China
| | - Changguan Wang
- Department of Ophthalmology; Key Laboratory of Vision Loss and Restoration; Ministry of Education; Peking University Third Hospital; Beijing China
| | - Hongliang Dou
- Department of Ophthalmology; Key Laboratory of Vision Loss and Restoration; Ministry of Education; Peking University Third Hospital; Beijing China
| | - Xuefeng Feng
- Department of Ophthalmology; Key Laboratory of Vision Loss and Restoration; Ministry of Education; Peking University Third Hospital; Beijing China
| | - Yuntao Hu
- Department of Ophthalmology; Key Laboratory of Vision Loss and Restoration; Ministry of Education; Peking University Third Hospital; Beijing China
| | - Kang Feng
- Department of Ophthalmology; Key Laboratory of Vision Loss and Restoration; Ministry of Education; Peking University Third Hospital; Beijing China
| | - Xin Wang
- Department of Ophthalmology; Key Laboratory of Vision Loss and Restoration; Ministry of Education; Peking University Third Hospital; Beijing China
| | - Zhizhong Ma
- Department of Ophthalmology; Key Laboratory of Vision Loss and Restoration; Ministry of Education; Peking University Third Hospital; Beijing China
| |
Collapse
|
39
|
Du J, Jin H, Yang L. Role of Hydrogen Sulfide in Retinal Diseases. Front Pharmacol 2017; 8:588. [PMID: 28900398 PMCID: PMC5581915 DOI: 10.3389/fphar.2017.00588] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2017] [Accepted: 08/15/2017] [Indexed: 12/26/2022] Open
Abstract
As the third gasotransmitter, hydrogen sulfide (H2S) plays a crucial role in the physiology and pathophysiology of many systems in the body, such as the nervous, cardiovascular, respiratory, and gastrointestinal systems. The mechanisms for its effects, including inhibiting ischemic injury, reducing oxidative stress damage, regulating apoptosis, and reducing the inflammation reaction in different systems, have not been fully understood. Recently, H2S and its endogenous synthesis pathway were found in the mammalian retina. This review describes the production and the metabolism of H2S and the evidence of a role of H2S in the retina physiology and in the different retinal diseases, including retinal degenerative diseases and vascular diseases. In the retina, H2S is generated in the presence of cystathionine-β-synthase, cystathionine-γ-lyase, and 3-mercaptopyruvate sulfurtransferase from L-cysteine. The role of endogenous H2S and its physiologic effect in the retina are still elusive. However, strong evidence shows that retina-derived H2S might play protective or deleterious role in the pathogenesis of retinal diseases. For example, by regulating Ca2+ influx, H2S can protect retinal neurons against light-induced degeneration. H2S preconditioning can mediate the anti-apoptotic effect of retinal ganglion cells in retinal ischemia/reperfusion injury. Treatment with H2S in rats relieves diabetic retinopathy by suppressing oxidative stress and reducing inflammation. Further studies would greatly improve our understanding of the pathophysiologic mechanisms responsible for retinal diseases and the potential for the H2S-related therapy of the retinal diseases as well.
Collapse
Affiliation(s)
- Jiantong Du
- Department of Ophthalmology, Peking University First HospitalBeijing, China
| | - Hongfang Jin
- Department of Pediatrics, Peking University First HospitalBeijing, China
| | - Liu Yang
- Department of Ophthalmology, Peking University First HospitalBeijing, China
| |
Collapse
|
40
|
Zelltherapie am Augenhintergrund – gestern, heute, morgen. MED GENET-BERLIN 2017. [DOI: 10.1007/s11825-017-0140-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Zusammenfassung
Der gemeinsame Endpunkt vieler Netzhautdegenerationen ist ein Zelluntergang im retinalen Pigmentepithel und/oder der neurosensorischen Retina und ein damit verbundener irreversibler Visusverlust. Therapieansätze in fortgeschrittenen Erkrankungsstadien müssen folglich ebenfalls den Ersatz dieser verloren gegangenen Zellen und Gewebe adressieren. Hier zeichnen sich in den letzten Jahren vor allem auf dem Gebiet der stammzellbasierten zellulären Transplantationstherapie rasante Fortschritte in Grundlagenforschung und klinischer Anwendung ab. Besonders die induzierten pluripotenten Stammzellen scheinen die personalisierte Medizin signifikant voranbringen zu können, falls es gelingt wesentliche Bedenken und Limitationen zu überwinden. Diese Übersicht benennt retinale Krankheitsbilder, bei denen Zelltherapie eine potenzielle Therapieoption darstellt, und gibt einen kurzen Einblick in bisherige Therapiemöglichkeiten. Darüber hinaus werden insbesondere die potenziellen Anwendungsbereiche induzierter pluripotenter Stammzellen mit ihren Vorteilen, aber auch Problemen beleuchtet. Der Hauptfokus liegt auf dem stammzellbasierten Ersatz des retinalen Pigmentepithels, da dieser im Hinblick auf eine therapeutische Anwendung am Menschen, im Vergleich zu anderen Zellen der neurosensorischen Netzhaut, die größten Fortschritte verzeichnet. Abschließend wird ein Überblick über bereits laufende klinische Studien zur Therapie von Netzhautdegenerationen mittels stammzellbasierter zellulärer Transplantationstherapie gegeben.
Collapse
|
41
|
Xiong S, Yu Y, Zhou X, Xia X, Jiang H. Rhodopsin T17M Mutant Inhibits Complement C3 Secretion in Retinal Pigment Epithelium via ROS Induced Downregulation of TWIST1. J Cell Biochem 2017; 118:4914-4920. [PMID: 28569420 DOI: 10.1002/jcb.26177] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Accepted: 05/31/2017] [Indexed: 11/07/2022]
Abstract
Rhodopsin mutations cause autosomal dominant form of retinitis pigmentosa (RP). T17M rhodopsin predisposes cells to endoplasmic reticulum stress induced apoptosis. However, the pathogenic role of T17M rhodopsin in RP is not completely understood. Complement C3 has a protective role in RP pathogenesis. This study aimed to investigate whether T17M rhodopsin regulates C3 secretion in retinal pigment epithelium. The human retinal pigment epithelial cell line (ARPE-19) was engineered to overexpress wide-type (WT) and T17M rhodopsin. Gene expression was detected by RT-PCR and Western blot analysis. C3 secretion was detected by ELISA. The overexpression of T17M rhodopsin significantly induced ROS and reduced C3 secretion and transcription in ARPE-19 cells, but ROS scavengers could partially rescue reduced C3 secretion and transcription. Mechanistically, we found that ROS suppressed transcription factor TWIST1 which is responsible for activated transcription of C3. In conclusion, our data provide the first evidence that T17M rhodopsin mutant disrupts C3 secretion via the induction of ROS and the suppression of TWIST1. These findings reveal novel insight into the pathogenic role of mutant rhodopsin in RP. J. Cell. Biochem. 118: 4914-4920, 2017. © 2017 Wiley Periodicals, Inc.
Collapse
Affiliation(s)
- Siqi Xiong
- Department of Ophthalmology, Xiangya Hospital, Central South University, Changsha, 410078, China
| | - Yixin Yu
- Department of Ophthalmology, Xiangya Hospital, Central South University, Changsha, 410078, China
| | - Xiaoyun Zhou
- Department of Ophthalmology, Xiangya Hospital, Central South University, Changsha, 410078, China
| | - Xiaobo Xia
- Department of Ophthalmology, Xiangya Hospital, Central South University, Changsha, 410078, China
| | - Haibo Jiang
- Department of Ophthalmology, Xiangya Hospital, Central South University, Changsha, 410078, China
| |
Collapse
|
42
|
Nommiste B, Fynes K, Tovell VE, Ramsden C, da Cruz L, Coffey P. Stem cell-derived retinal pigment epithelium transplantation for treatment of retinal disease. PROGRESS IN BRAIN RESEARCH 2017; 231:225-244. [PMID: 28554398 DOI: 10.1016/bs.pbr.2017.03.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
Age-related macular degeneration remains the most common cause of blindness in the western world, severely comprising patients' and carers' quality of life and presenting a great cost to the healthcare system. As the disease progresses, the retinal pigmented epithelium (RPE) layer at the back of the eye degenerates, contributing to a series of events resulting in visual impairment. The easy accessibility of the eye has allowed for in-depth study of disease progression in patients, while in vivo studies have facilitated investigations into healthy and diseased RPE. Consequently, a number of research groups are examining different approaches for the replacement of RPE cells in age-related macular degeneration (AMD) patients. This chapter examines some of these initial proof-of-principle studies and goes on to review the use of pluripotent stem cells as a source for RPE replacement in a number of current AMD clinical trials. Finally, we consider just some of the regulatory and manufacturing challenges presented in taking a promising AMD treatment from the research bench into clinical trials in patients, and how to mitigate potential risks early in process development.
Collapse
Affiliation(s)
| | - Kate Fynes
- Institute of Ophthalmology, London, United Kingdom
| | | | - Conor Ramsden
- Institute of Ophthalmology, London, United Kingdom; NIHR Biomedical Research Centre, Moorfields Eye Hospital NHS Foundation Trust, London, United Kingdom
| | - Lyndon da Cruz
- Institute of Ophthalmology, London, United Kingdom; NIHR Biomedical Research Centre, Moorfields Eye Hospital NHS Foundation Trust, London, United Kingdom; Moorfields Eye Hospital NHS Foundation Trust, London, United Kingdom
| | - Peter Coffey
- Institute of Ophthalmology, London, United Kingdom; NIHR Biomedical Research Centre, Moorfields Eye Hospital NHS Foundation Trust, London, United Kingdom; Center for Stem Cell Biology and Engineering, Neuroscience Research Institute, University of California, Santa Barbara, Santa Barbara, CA, United States.
| |
Collapse
|
43
|
Ljubimov AV. Cell Therapy for Age-Related Macular Degeneration: A New Vision for the Bone Marrow? Mol Ther 2017; 25:832-833. [PMID: 28318930 DOI: 10.1016/j.ymthe.2017.03.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
Affiliation(s)
- Alexander V Ljubimov
- Eye Program, Board of Governors Regenerative Medicine Institute, Cedars-Sinai Medical Center, and David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA 90048, USA.
| |
Collapse
|
44
|
Heterogeneity of Retinal Pigment Epithelial Cells from Adult Human Eye in Different Culturing Systems. Bull Exp Biol Med 2017; 162:569-577. [DOI: 10.1007/s10517-017-3661-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Indexed: 01/09/2023]
|
45
|
Qi X, Pay SL, Yan Y, Thomas J, Lewin AS, Chang LJ, Grant MB, Boulton ME. Systemic Injection of RPE65-Programmed Bone Marrow-Derived Cells Prevents Progression of Chronic Retinal Degeneration. Mol Ther 2017; 25:917-927. [PMID: 28202390 PMCID: PMC5383551 DOI: 10.1016/j.ymthe.2017.01.015] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2016] [Revised: 01/04/2017] [Accepted: 01/06/2017] [Indexed: 01/18/2023] Open
Abstract
Bone marrow stem and progenitor cells can differentiate into a range of non-hematopoietic cell types, including retinal pigment epithelium (RPE)-like cells. In this study, we programmed bone marrow-derived cells (BMDCs) ex vivo by inserting a stable RPE65 transgene using a lentiviral vector. We tested the efficacy of systemically administered RPE65-programmed BMDCs to prevent visual loss in the superoxide dismutase 2 knockdown (Sod2 KD) mouse model of age-related macular degeneration. Here, we present evidence that these RPE65-programmed BMDCs are recruited to the subretinal space, where they repopulate the RPE layer, preserve the photoreceptor layer, retain the thickness of the neural retina, reduce lipofuscin granule formation, and suppress microgliosis. Importantly, electroretinography and optokinetic response tests confirmed that visual function was significantly improved. Mice treated with non-modified BMDCs or BMDCs pre-programmed with LacZ did not exhibit significant improvement in visual deficit. RPE65-BMDC administration was most effective in early disease, when visual function and retinal morphology returned to near normal, and less effective in late-stage disease. This experimental paradigm offers a minimally invasive cellular therapy that can be given systemically overcoming the need for invasive ocular surgery and offering the potential to arrest progression in early AMD and other RPE-based diseases.
Collapse
Affiliation(s)
- Xiaoping Qi
- Department of Ophthalmology, Eugene and Marilyn Glick Eye Institute, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - S Louise Pay
- Department of Ophthalmology, Eugene and Marilyn Glick Eye Institute, Indiana University School of Medicine, Indianapolis, IN 46202, USA; Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Yuanqing Yan
- Department of Pharmacology and Therapeutics, University of Florida, Gainesville, FL 32610, USA
| | - James Thomas
- Department of Molecular Genetics and Microbiology, University of Florida, Gainesville, FL 32610, USA
| | - Alfred S Lewin
- Department of Molecular Genetics and Microbiology, University of Florida, Gainesville, FL 32610, USA
| | - Lung-Ji Chang
- Department of Molecular Genetics and Microbiology, University of Florida, Gainesville, FL 32610, USA
| | - Maria B Grant
- Department of Ophthalmology, Eugene and Marilyn Glick Eye Institute, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Michael E Boulton
- Department of Ophthalmology, Eugene and Marilyn Glick Eye Institute, Indiana University School of Medicine, Indianapolis, IN 46202, USA.
| |
Collapse
|
46
|
Kim MH, Inamori M, Akechi M, Abe H, Yagi Y, Kino-oka M. Development of an automated chip culture system with integrated on-line monitoring for maturation culture of retinal pigment epithelial cells. AIMS BIOENGINEERING 2017. [DOI: 10.3934/bioeng.2017.3.402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
|
47
|
Kim MH, Inamori M, Akechi M, Abe H, Yagi Y, Kino-oka M. Development of an automated chip culture system with integrated on-line monitoring for maturation culture of retinal pigment epithelial cells. AIMS BIOENGINEERING 2017. [DOI: 10.3934/bioeng.2017.4.402] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
|
48
|
Ullah H, Wahid F, Santos HA, Khan T. Advances in biomedical and pharmaceutical applications of functional bacterial cellulose-based nanocomposites. Carbohydr Polym 2016; 150:330-52. [PMID: 27312644 DOI: 10.1016/j.carbpol.2016.05.029] [Citation(s) in RCA: 193] [Impact Index Per Article: 24.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Revised: 04/25/2016] [Accepted: 05/11/2016] [Indexed: 12/16/2022]
Abstract
Bacterial cellulose (BC) synthesized by certain species of bacteria, is a fascinating biopolymer with unique physical and mechanical properties. BC's applications range from traditional dessert, gelling, stabilizing and thickening agent in the food industry to advanced high-tech applications, such as immobilization of enzymes, bacteria and fungi, tissue engineering, heart valve prosthesis, artificial blood vessels, bone, cartilage, cornea and skin, and dental root treatment. Various BC-composites have been designed and investigated in order to enhance its biological applicability. This review focuses on the application of BC-based composites for microbial control, wound dressing, cardiovascular, ophthalmic, skeletal, and endodontics systems. Moreover, applications in controlled drug delivery, biosensors/bioanalysis, immobilization of enzymes and cells, stem cell therapy and skin tissue repair are also highlighted. This review will provide new insights for academia and industry to further assess the BC-based composites in terms of practical applications and future commercialization for biomedical and pharmaceutical purposes.
Collapse
Affiliation(s)
- Hanif Ullah
- Department of Pharmacy, COMSATS Institute of Information Technology, Abbottabad 22060, Pakistan; Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, FI-00014 Helsinki, Finland
| | - Fazli Wahid
- Biotechnology Program, Department of Environmental Sciences, COMSATS Institute of Information Technology, Abbottabad 22060, Pakistan
| | - Hélder A Santos
- Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, FI-00014 Helsinki, Finland.
| | - Taous Khan
- Department of Pharmacy, COMSATS Institute of Information Technology, Abbottabad 22060, Pakistan.
| |
Collapse
|
49
|
Al-Nawaiseh S, Thieltges F, Liu Z, Strack C, Brinken R, Braun N, Wolschendorf M, Maminishkis A, Eter N, Stanzel BV. A Step by Step Protocol for Subretinal Surgery in Rabbits. J Vis Exp 2016. [PMID: 27684952 PMCID: PMC5092014 DOI: 10.3791/53927] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Age related macular degeneration (AMD), retinitis pigmentosa, and other RPE related diseases are the most common causes for irreversible loss of vision in adults in industrially developed countries. RPE transplantation appears to be a promising therapy, as it may replace dysfunctional RPE, restore its function, and thereby vision. Here we describe a method for transplanting a cultured RPE monolayer on a scaffold into the subretinal space (SRS) of rabbits. After vitrectomy xenotransplants were delivered into the SRS using a custom made shooter consisting of a 20-gauge metallic nozzle with a polytetrafluoroethylene (PTFE) coated plunger. The current technique evolved in over 150 rabbit surgeries over 6 years. Post-operative follow-up can be obtained using non-invasive and repetitive in vivo imaging such as spectral domain optical coherence tomography (SD-OCT) followed by perfusion-fixed histology. The method has well-defined steps for easy learning and high success rate. Rabbits are considered a large eye animal model useful in preclinical studies for clinical translation. In this context rabbits are a cost-efficient and perhaps convenient alternative to other large eye animal models.
Collapse
Affiliation(s)
| | | | - Zengping Liu
- Department of Ophthalmology, University of Bonn; Department of Ophthalmology, National University of Singapore
| | | | | | | | | | - Arvydas Maminishkis
- Section on Epithelial and Retinal Physiology and Disease, National Eye Institute/National Institutes of Health
| | - Nicole Eter
- Department of Ophthalmology, University of Münster
| | - Boris V Stanzel
- Department of Ophthalmology, University of Bonn; Surgical Retina Department, Singapore National Eye Centre;
| |
Collapse
|
50
|
Grob SR, Finn A, Papakostas TD, Eliott D. Clinical Trials in Retinal Dystrophies. Middle East Afr J Ophthalmol 2016; 23:49-59. [PMID: 26957839 PMCID: PMC4759904 DOI: 10.4103/0974-9233.173135] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Research development is burgeoning for genetic and cellular therapy for retinal dystrophies. These dystrophies are the focus of many research efforts due to the unique biology and accessibility of the eye, the transformative advances in ocular imaging technology that allows for in vivo monitoring, and the potential benefit people would gain from success in the field – the gift of renewed sight. Progress in the field has revealed the immense complexity of retinal dystrophies and the challenges faced by researchers in the development of this technology. This study reviews the current trials and advancements in genetic and cellular therapy in the treatment of retinal dystrophies and also discusses the current and potential future challenges.
Collapse
Affiliation(s)
- Seanna R Grob
- Department of Ophthalmology, Harvard Medical School, Boston, Massachusetts, USA; Massachusetts Eye and Ear Infirmary, Boston, Massachusetts, USA
| | - Avni Finn
- Department of Ophthalmology, Harvard Medical School, Boston, Massachusetts, USA; Massachusetts Eye and Ear Infirmary, Boston, Massachusetts, USA
| | - Thanos D Papakostas
- Department of Ophthalmology, Harvard Medical School, Boston, Massachusetts, USA; Massachusetts Eye and Ear Infirmary, Boston, Massachusetts, USA; Retina, Massachusetts Eye and Ear Infirmary, Boston, Massachusetts, USA
| | - Dean Eliott
- Department of Ophthalmology, Harvard Medical School, Boston, Massachusetts, USA; Massachusetts Eye and Ear Infirmary, Boston, Massachusetts, USA; Retina, Massachusetts Eye and Ear Infirmary, Boston, Massachusetts, USA
| |
Collapse
|