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Genesis 2013 Dec 01;5112:835-43. doi: 10.1002/dvg.22720.
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Simple and efficient CRISPR/Cas9-mediated targeted mutagenesis in Xenopus tropicalis.

Nakayama T , Fish MB , Fisher M , Oomen-Hajagos J , Thomsen GH , Grainger RM .

We have assessed the efficacy of the recently developed CRISPR/Cas (clustered regularly interspaced short palindromic repeats/CRISPR-associated) system for genome modification in the amphibian Xenopus tropicalis. As a model experiment, targeted mutations of the tyrosinase gene were verified, showing the expected albinism phenotype in injected embryos. We further tested this technology by interrupting the six3 gene, which is required for proper eye and brain formation. Expected eye and brain phenotypes were observed when inducing mutations in the six3 coding regions, as well as when deleting the gene promoter by dual targeting. We describe here a standardized protocol for genome editing using this system. This simple and fast method to edit the genome provides a powerful new reverse genetics tool for Xenopus researchers.

PubMed ID: 24123613
PMC ID: PMC3947545
Article link: Genesis
Grant support: [+]

Species referenced: Xenopus tropicalis
Genes referenced: dsp pam rpe six3 sp6 tbx2

Disease Ontology terms: holoprosencephaly

Article Images: [+] show captions
References [+] :
Abu-Daya, The hitchhiker's guide to Xenopus genetics. 2012, Pubmed, Xenbase