Splicing-guaranteed artificial introns enable efficient homology-directed repair at internal exons and streamlined cell engineering
Selection-marker-assisted homology-directed repair (HDR) efficiently edits coding sequence termini but is poorly suited for internal exons. Here, we developed artificial reporter intron-based HDR (ARI-HDR), which inserts a selectable intron into target exons to enable precise internal-exon editing. Although designed for scarless removal by splicing, ARIs frequently exhibit inaccurate splicing.…
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