Journal article

FokI-dCas9 mediates high-fidelity genome editing in pigs

Nella Fisicaro, Evelyn J Salvaris, Gayle K Philip, Matthew J Wakefield, Mark B Nottle, Wayne J Hawthorne, Peter J Cowan

XENOTRANSPLANTATION | WILEY | Published : 2019

Abstract

Gene editing using clustered regularly interspaced short palindromic repeats/Cas9 has great potential for improving the compatibility of porcine organs with human recipients. However, the risk of detrimental off-target mutations in gene-edited pigs remains largely undefined. We have previously generated GGTA1 knock-in pigs for xenotransplantation using FokI-dCas9, a variant of Cas9 that is reported to reduce the frequency of off-target mutagenesis. In this study, we used whole genome sequencing (WGS) and optimized bioinformatic analysis to assess the fidelity of FokI-dCas9 editing in the generation of these pigs. Genomic DNA was isolated from porcine cells before and after gene editing and s..

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