CRISPR/Cas9-Directed Gene Editing for the Generation of Loss-of-Function Mutants in High-Throughput Zebrafish F0 Screens

Curr Protoc Mol Biol. 2017 Jul 5:119:31.9.1-31.9.22. doi: 10.1002/cpmb.42.


The ability to perform reverse genetics in the zebrafish model organism has been greatly advanced with the advent of the CRISPR (clustered regularly interspaced short palindromic repeats)/Cas9 (CRISPR-associated) system. The high level of efficiency in generating mutations when using the CRISPR/Cas9 system combined with the rapid generation time of the zebrafish model organism has made the possibility of performing F0 screens in this organism a reality. This unit describes a detailed protocol for performing an F0 screen using the CRISPR/Cas9 system in zebrafish starting with the design and production of custom CRISPR/Cas9 reagents for injection. Next, two approaches for determining the efficiency of mutation induction by the custom CRISPR/Cas9 reagents that are easily performed using standard molecular biology protocols are detailed. Finally, screening for F0 induced phenotypes using the zebrafish flh gene as an example is discussed. © 2017 by John Wiley & Sons, Inc.

Keywords: CRISPR/Cas9; FO screen; gene editing; loss-of-function; recessive mutant; zebrafish.

Publication types

  • Research Support, N.I.H., Extramural

MeSH terms

  • Animals
  • CRISPR-Cas Systems*
  • Gene Editing / methods*
  • Gene Knockout Techniques / methods*
  • Genetic Testing / methods*
  • Zebrafish / genetics*