ZFIN ID: ZDB-PUB-161111-3
Ribozyme Mediated gRNA Generation for In Vitro and In Vivo CRISPR/Cas9 Mutagenesis
Lee, R.T., Ng, A.S., Ingham, P.W.
Date: 2016
Source: PLoS One   11: e0166020 (Journal)
Registered Authors: Ingham, Philip, Lee, Raymond
Keywords: Embryos, Ribozymes, Mutagenesis, Zebrafish, 5' UTR, Polyacrylamide gel electrophoresis, Somites, Sequence motif analysis
MeSH Terms:
  • Animals
  • CRISPR-Cas Systems*
  • Mutagenesis*
  • Promoter Regions, Genetic
  • RNA, Catalytic/metabolism*
  • RNA, Guide/genetics*
  • RNA, Guide/metabolism
  • Transgenes
  • Zebrafish/embryology
  • Zebrafish/genetics*
PubMed: 27832146 Full text @ PLoS One
CRISPR/Cas9 is now regularly used for targeted mutagenesis in a wide variety of systems. Here we report the use of ribozymes for the generation of gRNAs both in vitro and in zebrafish embryos. We show that incorporation of ribozymes increases the types of promoters and number of target sites available for mutagenesis without compromising mutagenesis efficiency. We have tested this by comparing the efficiency of mutagenesis of gRNA constructs with and without ribozymes and also generated a transgenic zebrafish expressing gRNA using a heat shock promoter (RNA polymerase II-dependent promoter) that was able to induce mutagenesis of its target. Our method provides a streamlined approach to test gRNA efficiency as well as increasing the versatility of conditional gene knock out in zebrafish.