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ENGINEERING OF SYSTEMS, METHODS AND OPTIMIZED GUIDE COMPOSITIONS FOR SEQUENCE MANIPULATION

  • US 20150232882A1
  • Filed: 05/04/2015
  • Published: 08/20/2015
  • Est. Priority Date: 12/12/2012
  • Status: Active Application
First Claim
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1. An engineered, non-naturally occurring Clustered Regularly Interspersed Short Palindromic Repeats (CRISPR)-CRISPR associated (Cas) (CRISPR-Cas) vector system comprising one or more vectors comprising:

  • a) a first regulatory element operably linked to one or more nucleotide sequences encoding one or more CRISPR-Cas system polynucleotide sequences comprising a guide sequence, a tracr RNA, and a tracr mate sequence, wherein the guide sequence hybridizes with one or more target sequences in polynucleotide loci in a eukaryotic cell,b) a second regulatory element operably linked to a nucleotide sequence encoding a Type II Cas9 protein,wherein components (a) and (b) are located on same or different vectors of the system,wherein the CRISPR-Cas system comprises two or more nuclear localization signals (NLSs) expressed with the nucleotide sequence encoding the Cas9 protein,whereby the one or more guide sequences target the one or more polynucleotide loci in a eukaryotic cell and the Cas9 protein cleaves the one or more polynucleotide loci, whereby the sequence of the one or more polynucleotide loci is modified.

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