1
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Viheriälä T, Hongisto H, Saari L, Oksanen M, Ilmarinen T, Väärämäki S, Uusitalo H, Nevalainen P, Skottman H. Novel Human Induced Pluripotent Stem Cell-Based Model for Retinal Pigment Epithelial Cells to Reveal Possible Disease Mechanisms for Macular Degeneration in Pseudoxanthoma Elasticum. J Ophthalmol 2024; 2024:6939920. [PMID: 39347541 PMCID: PMC11438508 DOI: 10.1155/2024/6939920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 06/06/2024] [Accepted: 09/06/2024] [Indexed: 10/01/2024] Open
Abstract
Pseudoxanthoma elasticum (PXE) is a rare metabolic disease with autosomal recessive inheritance. The manifestation in PXE is represented by retinal complications, pseudoxanthomas of the skin folding areas, and arterial calcification. The retinal complications are caused by the calcification of Bruch's membrane beneath retinal pigment epithelial cells (RPE) that can lead to retinal macular degeneration. The exact mechanism for the retinal pathophysiology is not known, and patients have variable symptoms and findings. Two induced pluripotent stem cell (hiPSC) lines from a patient carrying the common homozygous mutation c.3421C > T, p.Arg1141X in the ATP-binding cassette transporter gene (ABCC6; OMIM264800) were established and fully characterized. Then, RPE cells were differentiated, and molecular and functional characterization was conducted as a comparison to healthy controls. Data demonstrated that PXE-specific high-quality hiPSC lines can be established from a skin biopsy regardless of the skin-related disease phenotype and disease-specific RPE differentiation is feasible. The molecular and functional assessment of the PXE-specific RPE indicated increased pigmentation and reduced epithelial barrier functions as well as phagocytosis activity as compared to healthy controls. Although preliminary data, this indicates possible RPE-dependent factors that might explain the individual vulnerability of the retinas for macular degeneration in PXE. Future validation of the novel findings with additional PXE patients will be important.
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Affiliation(s)
- Taina Viheriälä
- Faculty of Medicine and Health Technology Tampere University, Tampere, Finland
| | - Heidi Hongisto
- Faculty of Medicine and Health Technology Tampere University, Tampere, Finland
| | - Lyydia Saari
- Faculty of Medicine and Health Technology Tampere University, Tampere, Finland
| | - Marika Oksanen
- Faculty of Medicine and Health Technology Tampere University, Tampere, Finland
| | - Tanja Ilmarinen
- Faculty of Medicine and Health Technology Tampere University, Tampere, Finland
| | - Suvi Väärämäki
- Centre for Vascular Surgery and Interventional Radiology Tampere University Hospital and Tampere University, Tampere, Finland
| | - Hannu Uusitalo
- SILK Department of Ophthalmology Faculty of Medicine and Health Technology Tampere University, Tampere, Finland
- Tays Eye Centre Tampere University Hospital, Tampere, Finland
| | - Pasi Nevalainen
- Department of Internal Medicine Tampere University Hospital, Tampere, Finland
| | - Heli Skottman
- Faculty of Medicine and Health Technology Tampere University, Tampere, Finland
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2
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Kang S, Chen EC, Cifuentes H, Co JY, Cole G, Graham J, Hsia R, Kiyota T, Klein JA, Kroll KT, Nieves Lopez LM, Norona LM, Peiris H, Potla R, Romero-Lopez M, Roth JG, Tseng M, Fullerton AM, Homan KA. Complex in vitromodels positioned for impact to drug testing in pharma: a review. Biofabrication 2024; 16:042006. [PMID: 39189069 DOI: 10.1088/1758-5090/ad6933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Accepted: 07/30/2024] [Indexed: 08/28/2024]
Abstract
Recent years have seen the creation and popularization of various complexin vitromodels (CIVMs), such as organoids and organs-on-chip, as a technology with the potential to reduce animal usage in pharma while also enhancing our ability to create safe and efficacious drugs for patients. Public awareness of CIVMs has increased, in part, due to the recent passage of the FDA Modernization Act 2.0. This visibility is expected to spur deeper investment in and adoption of such models. Thus, end-users and model developers alike require a framework to both understand the readiness of current models to enter the drug development process, and to assess upcoming models for the same. This review presents such a framework for model selection based on comparative -omics data (which we term model-omics), and metrics for qualification of specific test assays that a model may support that we term context-of-use (COU) assays. We surveyed existing healthy tissue models and assays for ten drug development-critical organs of the body, and provide evaluations of readiness and suggestions for improving model-omics and COU assays for each. In whole, this review comes from a pharma perspective, and seeks to provide an evaluation of where CIVMs are poised for maximum impact in the drug development process, and a roadmap for realizing that potential.
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Affiliation(s)
- Serah Kang
- Complex in vitro Systems Group, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, United States of America
| | - Eugene C Chen
- Department of Drug Metabolism and Pharmacokinetics, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, United States of America
| | - Helen Cifuentes
- Complex in vitro Systems Group, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, United States of America
| | - Julia Y Co
- Complex in vitro Systems Group, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, United States of America
| | - Gabrielle Cole
- Investigative Toxicology, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, United States of America
| | - Jessica Graham
- Product Quality & Occupational Toxicology, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, United States of Americaica
| | - Rebecca Hsia
- Complex in vitro Systems Group, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, United States of America
| | - Tomomi Kiyota
- Investigative Toxicology, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, United States of America
| | - Jessica A Klein
- Complex in vitro Systems Group, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, United States of America
| | - Katharina T Kroll
- Complex in vitro Systems Group, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, United States of America
| | - Lenitza M Nieves Lopez
- Complex in vitro Systems Group, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, United States of America
| | - Leah M Norona
- Investigative Toxicology, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, United States of America
| | - Heshan Peiris
- Human Genetics, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, United States of America
| | - Ratnakar Potla
- Complex in vitro Systems Group, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, United States of America
| | - Monica Romero-Lopez
- Complex in vitro Systems Group, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, United States of America
| | - Julien G Roth
- Complex in vitro Systems Group, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, United States of America
| | - Min Tseng
- Investigative Toxicology, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, United States of America
| | - Aaron M Fullerton
- Investigative Toxicology, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, United States of America
| | - Kimberly A Homan
- Complex in vitro Systems Group, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, United States of America
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3
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Lan X, Jiang H, Wang Q, Shiqi Q, Xiong Y. The application of retinal organoids in ophthalmic regenerative medicine: A mini-review. Regen Ther 2024; 26:382-386. [PMID: 39050551 PMCID: PMC11266866 DOI: 10.1016/j.reth.2024.06.013] [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: 05/28/2024] [Revised: 06/16/2024] [Accepted: 06/20/2024] [Indexed: 07/27/2024] Open
Abstract
Retinal organoids are three-dimensional (3D) microscopic tissues that are induced and differentiated from stem cells or progenitor cells in vitro and have a highly similar structure to the retina. With the optimization and development of 3D retinal culture system and the improvement of induced differentiation technology, retinal organoids have broad application prospects in retinal development, regenerative medicine, biomaterial evaluation, disease mechanism investigation, and drug screening. In this review we summarize recent development of retinal organoids and their applications in ophthalmic regenerative medicine. In particular, we highlight the promise and challenges in the use of retinal organoids in disease modeling and drug discovery.
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Affiliation(s)
| | | | - Qian Wang
- Ophthalmic Center, The Second Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi Province, 330006, China
| | - Qin Shiqi
- Ophthalmic Center, The Second Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi Province, 330006, China
| | - Yu Xiong
- Ophthalmic Center, The Second Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi Province, 330006, China
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4
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Zhao H, Yan F. Retinal Organoids: A Next-Generation Platform for High-Throughput Drug Discovery. Stem Cell Rev Rep 2024; 20:495-508. [PMID: 38079086 PMCID: PMC10837228 DOI: 10.1007/s12015-023-10661-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/28/2023] [Indexed: 02/03/2024]
Abstract
Retinal diseases are leading causes of blindness globally. Developing new drugs is of great significance for preventing vision loss. Current drug discovery relies mainly on two-dimensional in vitro models and animal models, but translation to human efficacy and safety is biased. In recent years, the emergence of retinal organoid technology platforms, utilizing three-dimensional microenvironments to better mimic retinal structure and function, has provided new platforms for exploring pathogenic mechanisms and drug screening. This review summarizes the latest advances in retinal organoid technology, emphasizing its application advantages in high-throughput drug screening, efficacy and toxicity evaluation, and translational medicine research. The review also prospects the combination of emerging technologies such as organ-on-a-chip, 3D bioprinting, single cell sequencing, gene editing with retinal organoid technology, which is expected to further optimize retinal organoid models and advance the diagnosis and treatment of retinal diseases.
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Affiliation(s)
- Hongkun Zhao
- Key Laboratory of Yunnan Province, Yunnan Eye Institute, Affiliated Hospital of Yunnan University, Yunnan University, Kunming, Yunnan, China
| | - Fei Yan
- Department of Pathology and Pathophysiology, Faculty of Basic Medicine School, Kunming Medical University, 1168 Yuhua Street, Chunrong West Road, Chenggong District, Kunming, Yunnan, 650500, China.
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5
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Móvio MI, de Lima-Vasconcellos TH, Dos Santos GB, Echeverry MB, Colombo E, Mattos LS, Resende RR, Kihara AH. Retinal organoids from human-induced pluripotent stem cells: From studying retinal dystrophies to early diagnosis of Alzheimer's and Parkinson's disease. Semin Cell Dev Biol 2023; 144:77-86. [PMID: 36210260 DOI: 10.1016/j.semcdb.2022.09.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Revised: 09/15/2022] [Accepted: 09/17/2022] [Indexed: 11/18/2022]
Abstract
Human-induced pluripotent stem cells (hiPSCs) have provided new methods to study neurodegenerative diseases. In addition to their wide application in neuronal disorders, hiPSCs technology can also encompass specific conditions, such as inherited retinal dystrophies. The possibility of evaluating alterations related to retinal disorders in 3D organoids increases the truthfulness of in vitro models. Moreover, both Alzheimer's (AD) and Parkinson's disease (PD) have been described as causing early retinal alterations, generating beta-amyloid protein accumulation, or affecting dopaminergic amacrine cells. This review addresses recent advances and future perspectives obtained from in vitro modeling of retinal diseases, focusing on retinitis pigmentosa (RP). Additionally, we depicted the possibility of evaluating changes related to AD and PD in retinal organoids obtained from potential patients long before the onset of the disease, constituting a valuable tool in early diagnosis. With this, we pointed out prospects in the study of retinal dystrophies and early diagnosis of AD and PD.
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Affiliation(s)
- Marília Inês Móvio
- Laboratório de Neurogenética, Universidade Federal do ABC, São Bernardo do Campo, SP, Brazil
| | | | | | - Marcela Bermudez Echeverry
- Centro de Matemática, Computação e Cognição, Universidade Federal do ABC, São Bernardo do Campo, SP, Brazil
| | - Elisabetta Colombo
- Center for Synaptic Neuroscience and Technology, Istituto Italiano di Tecnologia, Genoa, Italy; IRCCS Ospedale Policlinico San Martino, Genoa, Italy
| | - Leonardo S Mattos
- Biomedical Robotics Laboratory, Department of Advanced Robotics, Istituto Italiano di Tecnologia, Genoa, Italy
| | - Rodrigo Ribeiro Resende
- Department of Biochemistry and Immunology, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Alexandre Hiroaki Kihara
- Laboratório de Neurogenética, Universidade Federal do ABC, São Bernardo do Campo, SP, Brazil; Centro de Matemática, Computação e Cognição, Universidade Federal do ABC, São Bernardo do Campo, SP, Brazil.
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6
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Wang Y, Yin N, Yang R, Faiola F. Pollution effects on retinal health: A review on current methodologies and findings. Toxicol Ind Health 2023; 39:336-344. [PMID: 37160417 DOI: 10.1177/07482337231174072] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
In our daily life, we are exposed to numerous industrial chemicals that may be harmful to the retina, which is a delicate and sensitive part of our eyes. This could lead to irreversible changes and cause retinal diseases or blindness. Current retinal environmental health studies primarily utilize animal models, isolated mammalian retinas, animal- or human-derived retinal cells, and retinal organoids, to address both pre- and postnatal exposure. However, as there is limited toxicological information available for specific populations, human induced pluripotent stem cell (hiPSC)-induced models could be effective tools to supplement such data. In order to obtain more comprehensive and reliable toxicological information, we need more appropriate models, novel evaluation methods, and computational technologies to develop portable equipment. This review mainly focused on current toxicology models with particular emphasis on retinal organoids, and it looks forward to future models, analytical methods, and equipment that can efficiently and accurately evaluate retinal toxicity.
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Affiliation(s)
- Yue Wang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China
| | - Nuoya Yin
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China
| | - Renjun Yang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China
| | - Francesco Faiola
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China
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7
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Busskamp V. Stem cells for treating retinal degeneration. J Perinat Med 2022:jpm-2022-0510. [PMID: 36474335 DOI: 10.1515/jpm-2022-0510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Accepted: 11/16/2022] [Indexed: 12/12/2022]
Abstract
The mammalian retina lacks regenerative potency to replace damaged or degenerated cells. Therefore, traumatic or genetic insults that lead to the degeneration of retinal neurons or retinal pigment epithelium (RPE) cells alter visual perception and ultimately can lead to blindness. The advent of human stem cells and their exploitation for vision restoration approaches has boosted the field. Traditionally, animal models-mostly rodents-have been generated and used to mimic certain monogenetic hereditary diseases. Of note, some models were extremely useful to develop specific gene therapies, for example for Retinitis Pigmentosa, Leber congenital amaurosis and achromatopsia. However, complex multifactorial diseases are not well recapitulated in rodent models such as age-related macular degeneration (AMD) as rodents lack a macula. Here, human stem cells are extremely valuable to advance the development of therapies. Particularly, cell replacement therapy is of enormous importance to treat retinal degenerative diseases. Moreover, different retinal degenerative disorders require the transplantation of unique cell types. The most advanced one is to substitute the RPE cells, which stabilize the light-sensitive photoreceptors. Some diseases require also the transplantation of photoreceptors. Depending on the disease pattern, both approaches can also be combined. Within this article, I briefly feature the underlying principle of cell replacement therapies, demonstrate some successes and discuss certain shortcomings of these approaches for clinical application.
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Affiliation(s)
- Volker Busskamp
- Degenerative Retinal Diseases, University Hospital Bonn, Venusberg-Campus 1 Gebäude 5, 53127 Bonn, Germany
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8
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Habibey R, Rojo Arias JE, Striebel J, Busskamp V. Microfluidics for Neuronal Cell and Circuit Engineering. Chem Rev 2022; 122:14842-14880. [PMID: 36070858 PMCID: PMC9523714 DOI: 10.1021/acs.chemrev.2c00212] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Indexed: 02/07/2023]
Abstract
The widespread adoption of microfluidic devices among the neuroscience and neurobiology communities has enabled addressing a broad range of questions at the molecular, cellular, circuit, and system levels. Here, we review biomedical engineering approaches that harness the power of microfluidics for bottom-up generation of neuronal cell types and for the assembly and analysis of neural circuits. Microfluidics-based approaches are instrumental to generate the knowledge necessary for the derivation of diverse neuronal cell types from human pluripotent stem cells, as they enable the isolation and subsequent examination of individual neurons of interest. Moreover, microfluidic devices allow to engineer neural circuits with specific orientations and directionality by providing control over neuronal cell polarity and permitting the isolation of axons in individual microchannels. Similarly, the use of microfluidic chips enables the construction not only of 2D but also of 3D brain, retinal, and peripheral nervous system model circuits. Such brain-on-a-chip and organoid-on-a-chip technologies are promising platforms for studying these organs as they closely recapitulate some aspects of in vivo biological processes. Microfluidic 3D neuronal models, together with 2D in vitro systems, are widely used in many applications ranging from drug development and toxicology studies to neurological disease modeling and personalized medicine. Altogether, microfluidics provide researchers with powerful systems that complement and partially replace animal models.
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Affiliation(s)
- Rouhollah Habibey
- Department
of Ophthalmology, Universitäts-Augenklinik
Bonn, University of Bonn, Ernst-Abbe-Straße 2, D-53127 Bonn, Germany
| | - Jesús Eduardo Rojo Arias
- Wellcome—MRC
Cambridge Stem Cell Institute, Jeffrey Cheah Biomedical Centre, Cambridge
Biomedical Campus, University of Cambridge, Cambridge CB2 0AW, United Kingdom
| | - Johannes Striebel
- Department
of Ophthalmology, Universitäts-Augenklinik
Bonn, University of Bonn, Ernst-Abbe-Straße 2, D-53127 Bonn, Germany
| | - Volker Busskamp
- Department
of Ophthalmology, Universitäts-Augenklinik
Bonn, University of Bonn, Ernst-Abbe-Straße 2, D-53127 Bonn, Germany
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9
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Lewin AS, Smith WC. Gene Therapy for Rhodopsin Mutations. Cold Spring Harb Perspect Med 2022; 12:a041283. [PMID: 35940643 PMCID: PMC9435570 DOI: 10.1101/cshperspect.a041283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Mutations in RHO, the gene for rhodopsin, account for a large fraction of autosomal-dominant retinitis pigmentosa (adRP). Patients fall into two clinical classes, those with early onset, pan retinal photoreceptor degeneration, and those who experience slowly progressive disease. The latter class of patients are candidates for photoreceptor-directed gene therapy, while former may be candidates for delivery of light-responsive proteins to interneurons or retinal ganglion cells. Gene therapy for RHO adRP may be targeted to the mutant gene at the DNA or RNA level, while other therapies preserve the viability of photoreceptors without addressing the underlying mutation. Correcting the RHO gene and replacing the mutant RNA show promise in animal models, while sustaining viable photoreceptors has the potential to delay the loss of central vision and may preserve photoreceptors for gene-directed treatments.
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Affiliation(s)
- Alfred S Lewin
- Departments of Molecular Genetics and Microbiology and Ophthalmology, University of Florida College of Medicine, Gainesville, Florida 32610, USA
| | - W Clay Smith
- Departments of Molecular Genetics and Microbiology and Ophthalmology, University of Florida College of Medicine, Gainesville, Florida 32610, USA
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10
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Guan Y, Wang Y, Zheng D, Xie B, Xu P, Gao G, Zhong X. Generation of an RCVRN-eGFP Reporter hiPSC Line by CRISPR/Cas9 to Monitor Photoreceptor Cell Development and Facilitate the Cell Enrichment for Transplantation. Front Cell Dev Biol 2022; 10:870441. [PMID: 35573687 PMCID: PMC9096726 DOI: 10.3389/fcell.2022.870441] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Accepted: 03/21/2022] [Indexed: 11/13/2022] Open
Abstract
Stem cell-based cell therapies are considered to be promising treatments for retinal disorders with dysfunction or death of photoreceptors. However, the enrichment of human photoreceptors suitable for transplantation has been highly challenging so far. This study aimed to generate a photoreceptor-specific reporter human induced pluripotent stem cell (hiPSC) line using CRISPR/Cas9 genome editing, which harbored an enhanced green fluorescent protein (eGFP) sequence at the endogenous locus of the pan photoreceptor marker recoverin (RCVRN). After confirmation of successful targeting and gene stability, three-dimensional retinal organoids were induced from this reporter line. The RCVRN-eGFP reporter faithfully replicated endogenous protein expression of recoverin and revealed the developmental characteristics of photoreceptors during retinal differentiation. The RCVRN-eGFP specifically and steadily labeled photoreceptor cells from photoreceptor precursors to mature rods and cones. Additionally, abundant eGFP-positive photoreceptors were enriched by fluorescence-activated cell sorting, and their transcriptome signatures were revealed by RNA sequencing and data analysis. Moreover, potential clusters of differentiation (CD) biomarkers were extracted for the enrichment of photoreceptors for clinical applications, such as CD133 for the positive selection of photoreceptors. Altogether, the RCVRN-eGFP reporter hiPSC line was successfully established and the first global expression database of recoverin-positive photoreceptors was constructed. These achievements will provide a powerful tool for dynamically monitoring photoreceptor cell development and purification of human photoreceptors, thus facilitating photoreceptor cell therapy for advanced retinal disorders.
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11
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Rashidi H, Leong YC, Venner K, Pramod H, Fei QZ, Jones OJR, Moulding D, Sowden JC. Generation of 3D retinal tissue from human pluripotent stem cells using a directed small molecule-based serum-free microwell platform. Sci Rep 2022; 12:6646. [PMID: 35459774 PMCID: PMC9033780 DOI: 10.1038/s41598-022-10540-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Accepted: 03/08/2022] [Indexed: 11/09/2022] Open
Abstract
Retinal degenerative diseases are a leading cause of blindness worldwide with debilitating life-long consequences for the affected individuals. Cell therapy is considered a potential future clinical intervention to restore and preserve sight by replacing lost photoreceptors and/or retinal pigment epithelium. Development of protocols to generate retinal tissue from human pluripotent stem cells (hPSC), reliably and at scale, can provide a platform to generate photoreceptors for cell therapy and to model retinal disease in vitro. Here, we describe an improved differentiation platform to generate retinal organoids from hPSC at scale and free from time-consuming manual microdissection steps. The scale up was achieved using an agarose mould platform enabling generation of uniform self-assembled 3D spheres from dissociated hPSC in microwells. Subsequent retinal differentiation was efficiently achieved via a stepwise differentiation protocol using a number of small molecules. To facilitate clinical translation, xeno-free approaches were developed by substituting Matrigel™ and foetal bovine serum with recombinant laminin and human platelet lysate, respectively. Generated retinal organoids exhibited important features reminiscent of retinal tissue including correct site-specific localisation of proteins involved in phototransduction.
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Affiliation(s)
- Hassan Rashidi
- Stem Cells and Regenerative Medicine Section, Birth Defects Research Centre, UCL Great Ormond Street Institute of Child Health, University College London and NIHR Great Ormond Street Hospital Biomedical Research Centre, 30 Guilford Street, London, WC1N 1EH, UK
| | - Yeh Chwan Leong
- Stem Cells and Regenerative Medicine Section, Birth Defects Research Centre, UCL Great Ormond Street Institute of Child Health, University College London and NIHR Great Ormond Street Hospital Biomedical Research Centre, 30 Guilford Street, London, WC1N 1EH, UK
| | - Kerrie Venner
- UCL Institute of Neurology, Queens Square, University College London, London, UK
| | - Hema Pramod
- Stem Cells and Regenerative Medicine Section, Birth Defects Research Centre, UCL Great Ormond Street Institute of Child Health, University College London and NIHR Great Ormond Street Hospital Biomedical Research Centre, 30 Guilford Street, London, WC1N 1EH, UK
| | - Qi-Zhen Fei
- Stem Cells and Regenerative Medicine Section, Birth Defects Research Centre, UCL Great Ormond Street Institute of Child Health, University College London and NIHR Great Ormond Street Hospital Biomedical Research Centre, 30 Guilford Street, London, WC1N 1EH, UK
| | - Owen J R Jones
- Stem Cells and Regenerative Medicine Section, Birth Defects Research Centre, UCL Great Ormond Street Institute of Child Health, University College London and NIHR Great Ormond Street Hospital Biomedical Research Centre, 30 Guilford Street, London, WC1N 1EH, UK
| | - Dale Moulding
- Stem Cells and Regenerative Medicine Section, Birth Defects Research Centre, UCL Great Ormond Street Institute of Child Health, University College London and NIHR Great Ormond Street Hospital Biomedical Research Centre, 30 Guilford Street, London, WC1N 1EH, UK
| | - Jane C Sowden
- Stem Cells and Regenerative Medicine Section, Birth Defects Research Centre, UCL Great Ormond Street Institute of Child Health, University College London and NIHR Great Ormond Street Hospital Biomedical Research Centre, 30 Guilford Street, London, WC1N 1EH, UK.
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12
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Martinelli I, Tayebati SK, Tomassoni D, Nittari G, Roy P, Amenta F. Brain and Retinal Organoids for Disease Modeling: The Importance of In Vitro Blood–Brain and Retinal Barriers Studies. Cells 2022; 11:cells11071120. [PMID: 35406683 PMCID: PMC8997725 DOI: 10.3390/cells11071120] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 03/16/2022] [Accepted: 03/22/2022] [Indexed: 11/16/2022] Open
Abstract
Brain and retinal organoids are functional and dynamic in vitro three-dimensional (3D) structures derived from pluripotent stem cells that spontaneously organize themselves to their in vivo counterparts. Here, we review the main literature data of how these organoids have been developed through different protocols and how they have been technically analyzed. Moreover, this paper reviews recent advances in using organoids to model neurological and retinal diseases, considering their potential for translational applications but also pointing out their limitations. Since the blood–brain barrier (BBB) and blood–retinal barrier (BRB) are understood to play a fundamental role respectively in brain and eye functions, both in health and in disease, we provide an overview of the progress in the development techniques of in vitro models as reliable and predictive screening tools for BBB and BRB-penetrating compounds. Furthermore, we propose potential future directions for brain and retinal organoids, in which dedicated biobanks will represent a novel tool for neuroscience and ophthalmology research.
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Affiliation(s)
- Ilenia Martinelli
- School of Medicinal and Health Products Sciences, University of Camerino, 62032 Camerino, Italy; (S.K.T.); (G.N.); (F.A.)
- Correspondence:
| | - Seyed Khosrow Tayebati
- School of Medicinal and Health Products Sciences, University of Camerino, 62032 Camerino, Italy; (S.K.T.); (G.N.); (F.A.)
| | - Daniele Tomassoni
- School of Biosciences and Veterinary Medicine, University of Camerino, 62032 Camerino, Italy; (D.T.); (P.R.)
| | - Giulio Nittari
- School of Medicinal and Health Products Sciences, University of Camerino, 62032 Camerino, Italy; (S.K.T.); (G.N.); (F.A.)
| | - Proshanta Roy
- School of Biosciences and Veterinary Medicine, University of Camerino, 62032 Camerino, Italy; (D.T.); (P.R.)
| | - Francesco Amenta
- School of Medicinal and Health Products Sciences, University of Camerino, 62032 Camerino, Italy; (S.K.T.); (G.N.); (F.A.)
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13
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Li J, Chen Y, Ouyang S, Ma J, Sun H, Luo L, Chen S, Liu Y. Generation and Staging of Human Retinal Organoids Based on Self-Formed Ectodermal Autonomous Multi-Zone System. Front Cell Dev Biol 2021; 9:732382. [PMID: 34631711 PMCID: PMC8493070 DOI: 10.3389/fcell.2021.732382] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 09/03/2021] [Indexed: 01/12/2023] Open
Abstract
Methods for stem cell-derived, three-dimensional retinal organoids induction have been established and shown great potential for retinal development modeling and drug screening. Herein, we reported an exogenous-factors-free and robust method to generate retinal organoids based on “self-formed ectodermal autonomous multi-zone” (SEAM) system, a two-dimensional induction scheme that can synchronously generate multiple ocular cell lineages. Characterized by distinct morphological changes, the differentiation of the obtained retinal organoids could be staged into the early and late differentiation phases. During the early differentiation stage, retinal ganglion cells, cone photoreceptor cells (PRs), amacrine cells, and horizontal cells developed; whereas rod PRs, bipolar cells, and Müller glial cells were generated in the late differentiation phase, resembling early-phase and late-phase retinogenesis in vivo. Additionally, we modified the maintenance strategy for the retinal organoids and successfully promoted their long-term survival. Using 3D immunofluorescence image reconstruction and transmission electron microscopy, the substantial mature PRs with outer segment, inner segment and ribbon synapse were demonstrated. Besides, the retinal pigment epithelium (RPE) was induced with distinct boundary and the formation of ciliary margin was observed by co-suspending retina organoids with the zone containing RPE. The obtained RPE could be expanded and displayed similar marker expression, ultrastructural feature and functional phagocytosis to native RPE. Thus, this research described a simple and robust system which enabled generation of retina organoids with substantial mature PRs, RPE and the ciliary margin without the need of exogenous factors, providing a new platform for research of retinogenesis and retinal translational application.
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Affiliation(s)
- Jinyan Li
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - Yijia Chen
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - Shuai Ouyang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - Jingyu Ma
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - Hui Sun
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - Lixia Luo
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - Shuyi Chen
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - Yizhi Liu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
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14
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Eldred KC, Reh TA. Human retinal model systems: Strengths, weaknesses, and future directions. Dev Biol 2021; 480:114-122. [PMID: 34529997 DOI: 10.1016/j.ydbio.2021.09.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Revised: 09/01/2021] [Accepted: 09/02/2021] [Indexed: 10/20/2022]
Abstract
The retina is a complex neuronal structure that converts light energy into visual perception. Many specialized aspects of the primate retina, including a cone rich macula for high acuity vision, ocular size, and cell type diversity are not found in other animal models. In addition, the unique morphologies and distinct laminar positions of cell types found in the retina make this model system ideal for the study of neuronal cell fate specification. Many key early events of human retinal development are inaccessible to investigation as they occur during gestation. For these reasons, it has been necessary to develop retinal model systems to gain insight into human-specific retinal development and disease. Recent advances in culturing retinal tissue have generated new systems for retinal research and have moved us closer to generating effective regenerative therapies for vision loss. Here, we describe the strengths, weaknesses, and future directions for different human retinal model systems including dissociated primary tissue, explanted primary tissue, retinospheres, and stem cell-derived retinal organoids.
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Affiliation(s)
- Kiara C Eldred
- Department of Biological Structure, Institute for Stem Cells and Regenerative Medicine, University of Washington, Seattle, WA, 98195, USA
| | - Thomas A Reh
- Department of Biological Structure, Institute for Stem Cells and Regenerative Medicine, University of Washington, Seattle, WA, 98195, USA.
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15
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Rahić O, Tucak A, Omerović N, Sirbubalo M, Hindija L, Hadžiabdić J, Vranić E. Novel Drug Delivery Systems Fighting Glaucoma: Formulation Obstacles and Solutions. Pharmaceutics 2020; 13:E28. [PMID: 33375224 PMCID: PMC7824381 DOI: 10.3390/pharmaceutics13010028] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 12/19/2020] [Accepted: 12/22/2020] [Indexed: 02/06/2023] Open
Abstract
Glaucoma is considered to be one of the biggest health problems in the world. It is the main cause of preventable blindness due to its asymptomatic nature in the early stages on the one hand and patients' non-adherence on the other. There are several approaches in glaucoma treatment, whereby this has to be individually designed for each patient. The first-line treatment is medication therapy. However, taking into account numerous disadvantages of conventional ophthalmic dosage forms, intensive work has been carried out on the development of novel drug delivery systems for glaucoma. This review aims to provide an overview of formulation solutions and strategies in the development of in situ gel systems, nanosystems, ocular inserts, contact lenses, collagen corneal shields, ocular implants, microneedles, and iontophoretic devices. The results of studies confirming the effectiveness of the aforementioned drug delivery systems were also briefly presented.
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Affiliation(s)
- Ognjenka Rahić
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Sarajevo, Zmaja od Bosne 8, 71000 Sarajevo, Bosnia and Herzegovina; (A.T.); (M.S.); (L.H.); (J.H.)
| | - Amina Tucak
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Sarajevo, Zmaja od Bosne 8, 71000 Sarajevo, Bosnia and Herzegovina; (A.T.); (M.S.); (L.H.); (J.H.)
| | - Naida Omerović
- Department of Clinical Pharmacy, Faculty of Pharmacy, University of Sarajevo, Zmaja od Bosne 8, 71000 Sarajevo, Bosnia and Herzegovina;
| | - Merima Sirbubalo
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Sarajevo, Zmaja od Bosne 8, 71000 Sarajevo, Bosnia and Herzegovina; (A.T.); (M.S.); (L.H.); (J.H.)
| | - Lamija Hindija
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Sarajevo, Zmaja od Bosne 8, 71000 Sarajevo, Bosnia and Herzegovina; (A.T.); (M.S.); (L.H.); (J.H.)
| | - Jasmina Hadžiabdić
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Sarajevo, Zmaja od Bosne 8, 71000 Sarajevo, Bosnia and Herzegovina; (A.T.); (M.S.); (L.H.); (J.H.)
| | - Edina Vranić
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Sarajevo, Zmaja od Bosne 8, 71000 Sarajevo, Bosnia and Herzegovina; (A.T.); (M.S.); (L.H.); (J.H.)
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