Zygote-mediated generation of genome-modified mice using Streptococcus thermophilus 1-derived CRISPR/Cas system
2016
Fujii, Wataru | Kakuta, Shigeru | Yoshioka, Shin | Kyuwa, Shigeru | Sugiura, Koji | Naito, Kunihiko
Mammalian zygote-mediated genome-engineering by CRISPR/Cas is currently used for the generation of genome-modified animals. Here we report that a Streptococcus thermophilus-1 derived orthologous CRISPR/Cas system, which recognizes the 5′-NNAGAA sequence as a protospacer adjacent motif (PAM), is useful in mouse zygotes and is applicable for generating knockout mice (87.5%) and targeted knock-in mice (45.5%). The induced mutation could be inherited in the next generation. This novel CRISPR/Cas can expand the feasibility of the zygote-mediated generation of genome-modified animals that require an exact mutation design.
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