PUBLICATION

Efficient Multiple Genome Modifications Induced by the crRNAs, tracrRNA and Cas9 Protein Complex in Zebrafish

Authors
Kotani, H., Taimatsu, K., Ohga, R., Ota, S., Kawahara, A.
ID
ZDB-PUB-150527-5
Date
2015
Source
PLoS One   10: e0128319 (Journal)
Registered Authors
Kawahara, Atsuo, Ota, Satoshi
Keywords
none
MeSH Terms
  • Animals
  • Animals, Genetically Modified
  • CRISPR-Associated Proteins/genetics*
  • CRISPR-Cas Systems*
  • Carrier Proteins/genetics*
  • DNA Breaks, Double-Stranded
  • Genome
  • Membrane Proteins/genetics*
  • Monophenol Monooxygenase/genetics*
  • Quantitative Trait Loci
  • RNA, Guide, Kinetoplastida
  • Zebrafish/genetics*
  • Zebrafish Proteins/genetics*
PubMed
26010089 Full text @ PLoS One
Abstract
The type II clustered regularly interspaced short palindromic repeats (CRISPR) associated with Cas9 endonuclease (CRISPR/Cas9) has become a powerful genetic tool for understanding the function of a gene of interest. In zebrafish, the injection of Cas9 mRNA and guide-RNA (gRNA), which are prepared using an in vitro transcription system, efficiently induce DNA double-strand breaks (DSBs) at the targeted genomic locus. Because gRNA was originally constructed by fusing two short RNAs CRISPR RNA (crRNA) and trans-activating crRNA (tracrRNA), we examined the effect of synthetic crRNAs and tracrRNA with Cas9 mRNA or Cas9 protein on the genome editing activity. We previously reported that the disruption of tyrosinase (tyr) by tyr-gRNA/Cas9 mRNA causes a retinal pigment defect, whereas the disruption of spns2 by spns2-gRNA1/Cas9 mRNA leads to a cardiac progenitor migration defect in zebrafish. Here, we found that the injection of spns2-crRNA1, tyr-crRNA and tracrRNA with Cas9 mRNA or Cas9 protein simultaneously caused a migration defect in cardiac progenitors and a pigment defect in retinal epithelial cells. A time course analysis demonstrated that the injection of crRNAs and tracrRNA with Cas9 protein rapidly induced genome modifications compared with the injection of crRNAs and tracrRNA with Cas9 mRNA. We further show that the crRNA-tracrRNA-Cas9 protein complex is functional for the visualization of endogenous gene expression; therefore, this is a very powerful, ready-to-use system in zebrafish.
Genes / Markers
Figures
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Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Antibodies
Orthology
Engineered Foreign Genes
Mapping