Rational design of highly active sgRNAs for CRISPR-Cas9-mediated gene inactivation.
Rational design of highly active sgRNAs for CRISPR-Cas9-mediated gene inactivation.
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CRISPR-CAS9介导的基因失活的高度活性SGRNA的合理设计。
DOI:
10.1038/nbt.3026
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发表时间:
2014-12
影响因子:
46.9
通讯作者:
Root, David E.
中科院分区:
文献类型:
--
作者:
Doench, John G.;Hartenian, Ella;Graham, Daniel B.;Tothova, Zuzana;Hegde, Mudra;Smith, Ian;Sullender, Meagan;Ebert, Benjamin L.;Xavier, Ramnik J.;Root, David E.
Components of the prokaryotic clustered regularly interspersed palindromic repeat (CRISPR) loci have recently been repurposed for use in mammalian cells. The Cas9 protein can be programmed with a single guide RNA (sgRNA) to generate site-specific DNA breaks, but there are few known rules governing on-target efficacy of this system. We created a pool of sgRNAs, tiling across all possible target sites of a panel of six endogenous mouse and three endogenous human genes and quantitatively assessed their ability to produce null alleles of their target gene by antibody staining and flow cytometry. We discovered sequence features that improved activity, including a further optimization of the proto-spacer adjacent motif (PAM) of Streptococcus pyogenes Cas9. The results from 1,841 sgRNAs were used to construct a predictive model of sgRNA activity to improve sgRNA design for gene editing and genetic screens. We provide an online tool for the design of highly active sgRNAs for any gene of interest.
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