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Correction of NR2E3 Associated Enhanced S-cone Syndrome Patient-specific iPSCs using CRISPR-Cas9
Journal article   Open access   Peer reviewed

Correction of NR2E3 Associated Enhanced S-cone Syndrome Patient-specific iPSCs using CRISPR-Cas9

Laura R Bohrer, Luke A Wiley, Erin R Burnight, Jessica A Cooke, Joseph C Giacalone, Kristin R Anfinson, Jeaneen L Andorf, Robert F Mullins, Edwin M Stone and Budd A Tucker
Genes, Vol.10(4), p.278
04/05/2019
DOI: 10.3390/genes10040278
PMCID: PMC6523438
PMID: 30959774
url
https://doi.org/10.3390/genes10040278View
Published (Version of record) Open Access

Abstract

Enhanced S-cone syndrome (ESCS) is caused by recessive mutations in the photoreceptor cell transcription factor . Loss of is characterized by repression of rod photoreceptor cell gene expression, over-expansion of the S-cone photoreceptor cell population, and varying degrees of M- and L-cone photoreceptor cell development. In this study, we developed a CRISPR-based homology-directed repair strategy and corrected two different disease-causing mutations in patient-derived induced pluripotent stem cells (iPSCs) generated from two affected individuals. In addition, one patient's iPSCs were differentiated into retinal cells and transcription was evaluated in CRISPR corrected and uncorrected clones. The patient's c.119-2A>C mutation caused the inclusion of a portion of intron 1, the creation of a frame shift, and generation of a premature stop codon. In summary, we used a single set of CRISPR reagents to correct different mutations in iPSCs generated from two individuals with ESCS. In doing so we demonstrate the advantage of using retinal cells derived from affected patients over artificial in vitro model systems when attempting to demonstrate pathophysiologic mechanisms of specific mutations.
Genetic Therapy Genetic Predisposition to Disease Eye Diseases, Hereditary - pathology Orphan Nuclear Receptors - therapeutic use Retinal Degeneration - genetics Humans Induced Pluripotent Stem Cells - transplantation Gene Expression Regulation, Developmental - genetics Retinal Rod Photoreceptor Cells - metabolism Vision Disorders - pathology CRISPR-Cas Systems - genetics Orphan Nuclear Receptors - genetics Eye Diseases, Hereditary - genetics Vision Disorders - therapy Cell Differentiation - genetics Vision Disorders - genetics Retinal Degeneration - therapy Eye Diseases, Hereditary - therapy Mutation Retinal Degeneration - pathology Codon, Nonsense - genetics Retinal Rod Photoreceptor Cells - pathology Induced Pluripotent Stem Cells - metabolism

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