Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Modeling PRPF31 retinitis pigmentosa using iPSC-derived retinal organoids and retinal pigmented epithelium and rescue by gene augmentation strategy

ABSTRACT: Modeling PRPF31 retinitis pigmentosa using iPSC-derived retinal organoids and retinal pigmented epithelium and rescue by gene augmentation strategy

PROVIDER: PRJNA851279 | ENA |

REPOSITORIES: ENA

ACCESS DATA

Json Xml

Dataset's files

Source:

			Action	DRS
	SRR19761400_1.fastq.gz	Fastqsanger.gz
	SRR19761400_2.fastq.gz	Fastqsanger.gz
	SRR19761401_1.fastq.gz	Fastqsanger.gz
	SRR19761401_2.fastq.gz	Fastqsanger.gz
	SRR19761402_1.fastq.gz	Fastqsanger.gz

Items per page:

1 - 5 of 84

Similar Datasets

Modeling PRPF31 retinitis pigmentosa using iPSC-derived retinal organoids and retinal pigmented epithelium and rescue by gene augmentation strategy

Project description:Mutations in the ubiquitously expressed pre-mRNA processing factor (PRPF) 31, one of the most common cause of dominant form of Retinitis Pigmentosa (RP), lead to retina-specific phenotype. It is uncertain which retinal cell types are affected and animal models do not clearly present the RP phenotype observed in PRPF31 patients. Retinal organoids and retinal pigmented epithelial (RPE) cells derived from human induced pluripotent stem cells (iPSCs) provide potential opportunities for studying human PRPF31-related RP. We demonstrated that RPE cells carrying PRPF31 mutations present important morphological and functional changes and that PRPF31-mutated retinal organoids recapitulate the human RP phenotype, with a rod photoreceptor cell death followed by a loss of cones. The low level of PRPF31 expression may explain the defective phenotypes of PRPF31-mutated RPE and photoreceptor cells, which were not observed in cells derived from asymptomatic patients or after correction of the pathogenic mutation by CRISPR/Cas9. Transcriptome profiles revealed differentially expressed and mis-spliced genes belonging to pathways in line with the observed defective phenotypes. The rescue of RPE and photoreceptor defective phenotypes by PRPF31 gene augmentation, provide the proof of concept for future therapeutic strategies.

2022-08-01 | GSE206529 | GEO

Inhibition of JNK ameliorates rod photoreceptor degeneration in a mouse model of retinitis pigmentosa

Project description:Retinitis pigmentosa (RP) is an inherited eye disease that causes progressive vision loss.To investigate the biological processes and molecular changes that occur in different cell types in the retinas in rd1 mice, a mouse model of retinitis pigmentosa, we performed single-cell RNA-seq to examine the transcriptomes of various retinal cells.

2024-06-23 | GSE261060 | GEO

Splicing factor PRPF31 retinitis pigmentosa (RP11) is caused by disrupted alternative splicing programmes for genes implicated in pre-mRNA splicing, cellular adhesion and ciliogenesis

Project description:Mutations in pre-mRNA processing factors (PRPFs) cause autosomal dominant retinitis pigmentosa (RP), but it is unclear why mutations in ubiquitously expressed genes cause retinal disease. We have generated transcriptome profiles from RP11 (PRPF31-mutated) patient-derived retinal organoids and retinal pigment epithelium (RPE), as well as Prpf31+/- mouse tissues, which revealed that disrupted alternative splicing occurred for specific splicing programmes. Mis-splicing of genes encoding pre-mRNA splicing proteins was limited to patient-specific retinal cells and Prpf31+/- mouse retinae and RPE. Mis-splicing of genes implicated in ciliogenesis and cellular adhesion was associated with severe RPE defects that include disrupted apical-basal polarity, reduced trans-epithelial resistance and phagocytic capacity, and decreased cilia length and incidence. Disrupted cilia morphology also occurred in patient-derived photoreceptors, associated with progressive degeneration and cellular stress. In situ gene-editing of a pathogenic mutation rescued protein expression and key cellular phenotypes in RPE and photoreceptors, providing proof-of-concept for future therapeutic strategies.

2018-08-20 | PXD010821 | Pride

PRPF8 CLIP seq for iPSC, kidney organoid, retinal organoid, and retinal epithelium derived from c.6926A>C RPE with Retinitis Pigmentosa patients and CRISPR/Cas9 corrected

Project description:Retinitis Pigmentosa is a group of inherited eye disorders characterized by progressive degeneration of photoreceptor cells in the retina, leading to vision loss and eventual blindness. One of the known genetic mutations associated with RP is the c.6926A>C mutation in the RPE (retinal pigment epithelium) cells. The dataset involves multiple experimental approaches and cell types, providing a comprehensive understanding of the disease and potential corrective strategies.

2024-03-13 | E-MTAB-13171 | biostudies-arrayexpress

Modelling and rescue of RP2 Retinitis Pigmentosa using iPSC Derived Retinal Organoids

Project description:Mutations in RP2 lead to a severe form of X-linked retinitis pigmentosa (XLRP). RP2 functions as a GTPase activating protein (GAP) for the small GTPase ARL3, which is essential for cilia function and for photoreceptor development and maintenance. The mechanisms of RP2 associated retinal degeneration in humans are poorly understood, and genetically engineered animal models of RP2 XLRP present with differing retinal phenotypes and slow degeneration suggesting potential species differences. Here, we developed CRISPR gene edited isogenic RP2 knock-out (RP2 KO) induced pluripotent stem cells (iPSC) and RP2 patient derived iPSC to produce 3D retinal organoids as a human retinal disease model. The isogenic RP2 KO retinal organoids and two unrelated RP2 patient iPSC lines produced retinal organoids with a defined photoreceptor cell layer (ONL) containing rod and cone photoreceptors. Strikingly the RP2 KO and RP2 patient derived organoids showed a thinning of the ONL by 180 days (D180) of culture, which was associated with a spike in cell death in the ONL at D150 of differentiation. RNA sequencing confirmed induction of cell death pathways in the RP2 null organoids at this stage. Photoreceptor cell death and ONL thinning was attributed to cells undergoing terminal rod cell differentiation characterized by reduced RHO expression and fewer rhodopsin immunoreactive photoreceptors. Gene augmentation with a human RP2 transgene in an AAV2/5 vector efficiently transduced RP2 KO organoids and led to high levels of RP2 expression in both rods and cones. Importantly, the viral transduction significantly increased ONL thickness and restored rhodopsin expression, suggesting rescue of the RP2 degeneration phenotype. These data show that 3D retinal organoids can be used to model molecular defects associated with inherited retinal disease, photoreceptor cell death and also to test potential therapies targeted to prevent photoreceptor degeneration.

2020-07-08 | GSE148300 | GEO

Molecular basis of retinal remodeling in a Zebrafish model of Retinitis Pigmentosa

Project description:A hallmark of inherited retinal degenerative diseases such as Retinitis Pigmentosa (RP) is progressive structural and functional remodeling of the remaining retinal cells as photoreceptors degenerate. Extensive remodeling of the retina stands as a barrier for the successful implementation of strategies to restore vision. To understand the molecular basis of remodeling, we performed analyses of single-cell transcriptome data from adult Zebrafish retina of wild-type and a P23H mutant rhodopsin transgenic model of RP with continuous degeneration and regeneration. We provide a benchmark atlas of retinal cell type transcriptomes in Zebrafish and find changes in all retinal cell types in the P23H model. These include widespread oxidative stress, changes in reliance on oxidative metabolism and glycolysis, widespread synaptic remodeling, and changes in circadian rhythm regulation. This comprehensive transcriptomic analysis provides a molecular road map to understand how the retina remodels in the context of chronic retinal degeneration with ongoing regeneration.

2023-11-10 | GSE234435 | GEO

AAV-mediated gene augmentation therapy of CRB1-patient derived retinal organoids restores the histological and transcriptional retinal phenotype

Project description:Retinitis pigmentosa (RP) and Leber congenital amaurosis are inherited retinal dystrophies caused by mutations in, among others, the Crumbs homologue 1 (CRB1) gene. CRB1 is required for organizing apical-basal polarity and adhesion between photoreceptors and Müller glial cells. Using human CRB1 patient induced pluripotent stem cells from RP patients we derived CRB1 retinal organoids, with diminished expression of variant CRB1 protein with immunohistochemical analysis. Single cell RNA-sequencing revealed impact on, among others, the endosomal pathway and cell adhesion and migration in CRB1 patient derived retinal organoids compared to isogenic controls. Adeno-associated viral (AAV) vector-mediated hCRB2 or hCRB1 gene augmentation in Müller glial and photoreceptor cells partially restored the histological and differentially expressed genes phenotype. Altogether, we show proof-of-concept that AAV.hCRB1 or AAV.hCRB2 treatment improved the phenotype of CRB1 patient derived retinal organoids, providing essential information for future gene therapy approaches for patients with mutations in the CRB1 gene.

2023-04-20 | GSE212582 | GEO

Search for recessive retinitis pigmentosa genes using RNA expression analysis in lymphoblasts

Project description:Recessive retinitis pigmentosa (RP) is often caused by nonsense mutations that lead to low mRNA levels as a result of nonsense-mediated decay. Some RP genes are expressed at detectable levels in leukocytes as well as in the retina. We designed a microarray-based method to find recessive RP genes based on low lymphoblast mRNA expression levels Keywords: Recessive mutations; mRNA expression; nonsense mediated-decay; retinitis pigmentosa; lymphocyte; Affymetrix genechip Human Genome U133Plus2.0.

2008-07-14 | GSE12086 | GEO

Prpf31 is essential for the survival and differentiation of retinal progenitor cells by modulating alternative splicing

Project description:Dysfunction of splicing factors often result in abnormal cell differentiation and apoptosis, especially in neural tissues. Mutations in pre-mRNAs processing factor 31 (PRPF31) cause autosomal dominant retinitis pigmentosa, a progressive retinal degeneration disease. The transcriptome-wide splicing events specifically regulated by PRPF31 and their biological roles in the development and maintenance of retina are still unclear. Here, we showed that the differentiation and viability of retinal progenitor cells (RPCs) are severely perturbed in prpf31 knockout zebrafish when compared with other tissues at an early embryonic stage. At the cellular level, significant mitotic arrest and DNA damage were observed. These defects could be rescued by the wild-type human PRPF31 rather than the disease-associated mutants. Further bioinformatic analysis and experimental verification uncovered that Prpf31 deletion predominantly causes the skipping of exons with a weak 5′ splicing site. Moreover, genes necessary for DNA repair and mitotic progression are most enriched among the differentially spliced events, which may explain the cellular and tissular defects in prpf31 mutant retinas. This is the first time that Prpf31 is demonstrated to be essential for the survival and differentiation of RPCs during retinal neurogenesis by specifically modulating the alternative splicing of genes involved in DNA repair and mitosis.

2021-01-06 | GSE151273 | GEO

Modelling and rescue of RP2 Retinitis Pigmentosa using iPSC Derived Retinal Organoids

Project description:Modelling and rescue of RP2 Retinitis Pigmentosa using iPSC Derived Retinal Organoids

| PRJNA623855 | ENA