Abstract
Genomic Safe Harbors (GSH) are loci used for the insertion of exogenous genetic elements, enabling exogenous gene expressing predictably without alterations of the host genome. These sites are becoming increasingly important as the gene editing technologies advance rapidly. Currently, only a few GSHs have been identified in the pig genome. In this study, a novel strategy was demonstrated for the efficient insertion of exogenous genetic material into the third exon of the UTY gene on the Y chromosome using CRISPR/Cas9-mediated homology arm-mediated end joining. The safety of the locus was verified according to the proper expression of the inserted EGFP gene without altering the expression of UTY. This approach enables the integration and expression of the exogenous gene at this locus, indicating that the UTY locus serves as a genomic safe harbor site for gene editing in the pig genome. Located on the Y chromosome, this site can be utilized for sex-biased pig breeding and developing biomedical models.
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