Modification of improved-genome editing via oviductal nucleic acids delivery (i-GONAD)-mediated knock-in in rats.

ABSTRACT:

Background

Improved genome-editing via oviductal nucleic acids delivery (i-GONAD) is a new technology that facilitates in situ genome-editing of mammalian zygotes exiting the oviductal lumen. The i-GONAD technology has been developed for use in mice, rats, and hamsters; however, oligonucleotide (ODN)-based knock-in (KI) is more inefficient in rats than mice. To improve the efficiency of i-GONAD in rats we examined KI efficiency using three guide RNAs (gRNA), crRNA1, crRNA2 and crRNA3. These gRNAs recognize different portions of the target locus, but also overlap each other in the target locus. We also examined the effects of commercially available KI -enhancing drugs (including SCR7, L755,507, RS-1, and HDR enhancer) on i-GONAD-mediated KI efficiency.

Results

The KI efficien

SUBMITTER: Aoshima T 

PROVIDER: S-EPMC8561937 | biostudies-literature | 2021 Nov

REPOSITORIES: biostudies-literature