ARTIFICIAL SINGLE GUIDE RNA AND USE THEREOF
    3.
    发明公开

    公开(公告)号:EP3409776A1

    公开(公告)日:2018-12-05

    申请号:EP17744466.8

    申请日:2017-01-30

    CPC classification number: C07C229/04 C07C229/34 C12N9/16 C12N15/09 Y02P20/55

    Abstract: The present invention provides a novel artificial sgRNA having an activity equal to or higher than that of a natural form sgRNA and improved in stability in vivo, and an efficient CRISPR/Cas9 system by combining the artificial sgRNA and Cas9. Even when a nucleotide linker region for forming a single strand by linking the 3'-terminal of crRNA and the 5'-terminal of tracrRNA in sgRNA is substituted with an amino acid derivative linker, an activity equal to or higher than that of the original sgRNA is retained in an in vitro DNA cleavage assay. Furthermore, even when the linker region existing between stem-loop 1 and stem-loop 2 of tracrRNA and/or the loop portion of stem-loop 2 are/is substituted with an amino acid derivative linker, or even when an amino acid derivative linker is added/inserted into the vicinity of the 5'-terminal and/or the 3'-terminal of sgRNA, an activity equal to or higher than that of the original sgRNA is retained. The stability in vivo can be improved by introducing one or more amino acid derivative linkers into sgRNA.

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