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Metabolomics,Unknown,Transcriptomics,Genomics,Proteomics

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Gene expression changes in the retina following human neural progenitor cell injection into a rodent model for retinal degeneration

ABSTRACT: The goal of this study is to compare gene expression changes in retinal degenerate Royal College of Surgeons (RCS) rats following an injection of human neural progenitor cells (hNPCs) using RNA-seq, as compared to RCS rats receiving a sham surgery and wild-type Long Evans rats. These changes may lead to understanding of the therapeutic potential of hNPCs in inducing photoreceptor survival and visual function preservation. RNA-seq from wild-type Long Evans rats, retinal degenerate Royal College of Surgeons (RCS) rats, and RCS rats following transplantation of human neural progenitor cells (hNPCs)

ORGANISM(S): Rattus norvegicus

SUBMITTER: Melissa Jones

PROVIDER: E-GEOD-70600 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Gene expression changes in the retina following human neural progenitor cell injection into a rodent model for retinal degeneration

Project description:The goal of this study is to compare gene expression changes in retinal degenerate Royal College of Surgeons (RCS) rats following an injection of human neural progenitor cells (hNPCs) using RNA-seq, as compared to RCS rats receiving a sham surgery and wild-type Long Evans rats. These changes may lead to understanding of the therapeutic potential of hNPCs in inducing photoreceptor survival and visual function preservation.

2016-05-16 | GSE70600 | GEO

In vitro and in vivo proteomic comparison of human neural progenitor cell-induced photoreceptor survival

Project description:Retinal degenerative diseases are some of the leading causes of blindness with few treatments. Various cell-based therapies have aimed to slow the progression of vision loss by preserving light-sensing photoreceptor cells. A subretinal injection of human neural progenitor cells (hNPCs) into the Royal College of Surgeons (RCS) rat model of retinal degeneration has aided in photoreceptor survival, though the mechanisms are mainly unknown. Identifying the retinal proteomic changes that occur following hNPC treatment will lead to better understanding of neuroprotection. To mimic the retinal environment following hNPC injection, a co-culture system of retinas and hNPCs was developed. Less cell death occurred in RCS retinal tissue co-cultured with hNPCs than in retinas cultured alone, suggesting that hNPCs provide retinal protection in vitro. Comparison of ex vivo and in vivo retinas identified NRF2-mediated oxidative response signaling as an hNPC-induced pathway. This is the first study to compare proteomic changes following treatment with hNPCs in both an ex vivo and in vivo environment, further allowing the use of ex vivo modeling for mechanisms of retinal preservation. Elucidation of the protein changes in the retina following hNPC treatment may lead to the discovery of mechanisms of photoreceptor survival and its therapeutic for clinical applications.

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proteomics profiling of early retina degeneration of RCS rats

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Retinal vessel microarray

Project description:We sought to identify differentially expressed genes in several animal models of a retinal disease exhibiting vascular abnormalities and/or angiogenesis compared to control animals. Retinal microvessels were isolated from three models (RD1, Grhl3ct (Curlytail), VLDLR knock-out) and one rat model (RCS dystrophic rat), as well as from C57BL/J6 mice and non-dystrophic RCS rats as controls. Animals were used at ages appropriate to the age of vascular change of each model. Microvessels were isolated from the retinas and RNA was extracted and used in the microarray.

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Identifying Biomarkers of Heterogeneity and Transplantation Efficacy in Retinal Pigment Epithelial Cells [scRNA-seq]

Project description:Transplantation of retinal pigment epithelial (RPE) cells holds great promise for patients with retinal degenerative diseases such as age-related macular degeneration. In-depth characterization of RPE cell product identity and critical quality attributes are needed to enhance efficacy and safety of replacement therapy strategies. Here we characterized an adult RPE stem cell-derived (RPESC-RPE) cell product using bulk and single cell RNA sequencing (sc-RNA-seq), assessing functional cell integration in vitro into a mature RPE monolayer and in vivo efficacy by vision rescue in the Royal College of Surgeons rats. scRNA-seq revealed several distinct subpopulations in the RPESC-RPE product, some with progenitor markers. We identified RPE clusters expressing genes associated with in vivo efficacy and increased cell integration capability. Gene expression analysis revealed a lncRNA (TREX) as a predictive marker of in vivo efficacy. TREX knockdown decreased cell integration while overexpression increased integration in vitro and improved vision rescue in the RCS rats.

2023-08-14 | GSE211188 | GEO

Identifying Biomarkers of Heterogeneity and Transplantation Efficacy in Retinal Pigment Epithelial Cells [Bulk RNA-seq]

2023-08-14 | GSE211187 | GEO

Human amniotic epithelial stem cell-derived retinal pigment epithelium cells repair retinal degeneration

Project description:Age-related macular degeneration (AMD), featured with dysfunction and loss of retinal pigment epithelium (RPE), is lacking efficient therapeutic approaches. According to our previous studies, human amniotic epithelial stem cells (hAESCs) may serve as a potential seed cell source of RPE cells for therapy because they have no ethical concerns, no tumorigenicity, and little immunogenicity. Herein, trichostatin A and nicotinamide can direct hAESCs differentiation into RPE like cells. The differentiated cells display the morphology, marker expression and cellular function of the native RPE cells, and noticeably express little MHC class II antigens and high level of HLA-G. Importantly, visual function and retinal structure of Royal College of Surgeon (RCS) rats, a classical animal model of retinal degeneration, were rescued after subretinal transplantation with the hAESCs-derived RPE like cells. We established a high-efficient, low-cost and safety-guaranteed system for generating functional RPE cells from hAESCs. These results suggest a novel and ideal therapeutic strategy for retinal degeneration diseases

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