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Genotyping with CRISPR-Cas-derived RNA-guided endonucleases

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  • Jong Min Kim

    (National Creative Initiatives Research Center for Genome Engineering, Seoul National University)

  • Daesik Kim

    (National Creative Initiatives Research Center for Genome Engineering, Seoul National University)

  • Seokjoong Kim

    (ToolGen, Inc., Byucksan Kyoungin Digital Valley 2-Cha)

  • Jin-Soo Kim

    (National Creative Initiatives Research Center for Genome Engineering, Seoul National University)

Abstract

Restriction fragment length polymorphism (RFLP) analysis is one of the oldest, most convenient and least expensive methods of genotyping, but is limited by the availability of restriction endonuclease sites. Here we present a novel method of employing CRISPR/Cas-derived RNA-guided engineered nucleases (RGENs) in RFLP analysis. We prepare RGENs by complexing recombinant Cas9 protein derived from Streptococcus pyogenes with in vitro transcribed guide RNAs that are complementary to the DNA sequences of interest. Then, we genotype recurrent mutations found in cancer and small insertions or deletions (indels) induced in cultured cells and animals by RGENs and other engineered nucleases such as transcription activator-like effector nucleases (TALENs). Unlike T7 endonuclease I or Surveyor assays that are widely used for genotyping engineered nuclease-induced mutations, RGEN-mediated RFLP analysis can detect homozygous mutant clones that contain identical biallelic indel sequences and is not limited by sequence polymorphisms near the nuclease target sites.

Suggested Citation

  • Jong Min Kim & Daesik Kim & Seokjoong Kim & Jin-Soo Kim, 2014. "Genotyping with CRISPR-Cas-derived RNA-guided endonucleases," Nature Communications, Nature, vol. 5(1), pages 1-8, May.
    • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms4157
    DOI: 10.1038/ncomms4157
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