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CRISPR-Cas9-Mediated Correction of the 1.02 kb Common Deletion in CLN3 in Induced Pluripotent Stem Cells from Patients with Batten Disease
Journal article   Open access

CRISPR-Cas9-Mediated Correction of the 1.02 kb Common Deletion in CLN3 in Induced Pluripotent Stem Cells from Patients with Batten Disease

Erin R Burnight, Laura R Bohrer, Joseph C Giacalone, Darcey L Klaahsen, Heather T Daggett, Jade S East, Robert A Madumba, Kristan S Worthington, Robert F Mullins, Edwin M Stone, …
CRISPR journal, Vol.1(1), pp.75-87
02/01/2018
DOI: 10.1089/crispr.2017.0015
PMCID: PMC6319325
PMID: 31021193
url
https://doi.org/10.1089/crispr.2017.0015View
Published (Version of record) Open Access

Abstract

Juvenile neuronal ceroid lipofuscinosis (Batten disease) is a rare progressive neurodegenerative disorder caused by mutations in CLN3 . Patients present with early-onset retinal degeneration, followed by epilepsy, progressive motor deficits, cognitive decline, and premature death. Approximately 85% of individuals with Batten disease harbor at least one allele containing a 1.02 kb genomic deletion spanning exons 7 and 8. This study demonstrates CRISPR-Cas9-based homology-dependent repair of this mutation in induced pluripotent stem cells generated from two independent patients: one homozygous and one compound heterozygous for the 1.02 kb deletion. Our strategy included delivery of a construct that carried >3 kb of DNA: wild-type CLN3 sequence and a LoxP-flanked, puromycin resistance cassette for positive selection. This strategy resulted in correction at the genomic DNA and mRNA levels in the two independent patient lines. These CRISPR-corrected isogenic cell lines will be a valuable tool for disease modeling and autologous retinal cell replacement.
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