Optimized sgRNA design to maximize activity and minimize off-target effects of CRISPR-Cas9

  • John G. Doench
  • , Nicolo Fusi
  • , Meagan Sullender
  • , Mudra Hegde
  • , Emma W. Vaimberg
  • , Katherine F. Donovan
  • , Ian Smith
  • , Zuzana Tothova
  • , Craig Wilen
  • , Robert Orchard
  • , Herbert W. Virgin
  • , Jennifer Listgarten
  • , David E. Root

Research output: Contribution to journalArticlepeer-review

3144 Scopus citations

Abstract

CRISPR-Cas9-based genetic screens are a powerful new tool in biology. By simply altering the sequence of the single-guide RNA (sgRNA), one can reprogram Cas9 to target different sites in the genome with relative ease, but the on-target activity and off-target effects of individual sgRNAs can vary widely. Here, we use recently devised sgRNA design rules to create human and mouse genome-wide libraries, perform positive and negative selection screens and observe that the use of these rules produced improved results. Additionally, we profile the off-target activity of thousands of sgRNAs and develop a metric to predict off-target sites. We incorporate these findings from large-scale, empirical data to improve our computational design rules and create optimized sgRNA libraries that maximize on-target activity and minimize off-target effects to enable more effective and efficient genetic screens and genome engineering.

Original languageEnglish
Pages (from-to)184-191
Number of pages8
JournalNature Biotechnology
Volume34
Issue number2
DOIs
StatePublished - Feb 1 2016

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