Genome Engineering Using CRISPR-Cas9 System

  • Cong L
  • Zhang F
  • 2

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Abstract

The Clustered Regularly Interspaced Short Palindromic Repeats (CRISPR)-Cas9 system is an adaptive immune system that exists in a variety of microbes. It could be engineered to function in eukaryotic cells as a fast, low-cost, effi cient, and scalable tool for manipulating genomic sequences. In this chapter, detailed protocols are described for harnessing the CRISPR-Cas9 system from Streptococcus pyogenes to enable RNA-guided genome engineering applications in mammalian cells. We present all relevant methods including the initial site selection, molecular cloning, delivery of guide RNAs (gRNAs) and Cas9 into mammalian cells, verifi cation of target cleavage, and assays for detecting genomic modifi cation including indels and homologous recombination. These tools provide researchers with new instruments that acceler-ate both forward and reverse genetics efforts.

Author-supplied keywords

  • CRISPR
  • CRISPR-Cas9
  • Cas9
  • DNA cleavage
  • Genome engineering
  • Guide RNA
  • Homologous recombination
  • Mutagenesis
  • PAM
  • Streptococcus pyogenes
  • sgRNA

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Authors

  • Le Cong

  • Feng Zhang

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