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Prime editing enables precise genome editing in mouse liver and retina

Jang, H.; Shin, J. H.; Jo, D. H.; Seo, J. H.; Yu, G.; Gopalappa, R.; Cho, S.-R.; Kim, J. H.; Kim, H. H.

2021-01-08 bioengineering
10.1101/2021.01.08.425835 bioRxiv
Show abstract

Prime editing can induce any small-sized genetic change without donor DNA or double strand breaks. However, it has not been investigated whether prime editing is possible in postnatal animals. Here we delivered prime editors 2 and 3 into a mouse model of hereditary tyrosinemia, a genetic liver disease, using hydrodynamic injection, which corrected the disease-causing mutation and rescued the phenotype. We also achieved prime editing in the retina and retina pigment epithelium in wild-type mice by delivering prime editor 3 using trans-splicing adeno-associated virus. Deep sequencing showed that unintended edits at or near the target site or off-target effects were not detectable except for low levels (0% to 1.2%) of indels when PE3, but not PE2, was used. Our study suggests that precise, prime editor-mediated genome editing is possible in somatic cells of adult animals.

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"Similar papers" are the closest papers from that journal in the model's embedding space. They show what the match is built on, but the ranking comes mostly from a classifier over the whole training set, not from these examples alone.