DNA targeting specificity of RNA-guided Cas9 nucleases.
DNA targeting specificity of RNA-guided Cas9 nucleases.
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DOI:
10.1038/nbt.2647
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发表时间:
2013-09
影响因子:
46.9
通讯作者:
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文献类型:
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The Streptococcus pyogenes Cas9 (SpCas9) nuclease can be efficiently targeted to genomic loci by means of singleguide RNAs (sgRNAs) to enable genome editing. Here, we characterize SpCas9 targeting specificity in human cells to inform the selection of target sites and avoid off-target effects. Our study evaluates >700 guide RNA variants and SpCas9-induced indel mutation levels at >100 predicted genomic off-target loci in 293T and 293FT cells. We find that SpCas9 tolerates mismatches between guide RNA and target DNA at different positions in a sequence-dependent manner, sensitive to the number, position and distribution of mismatches. We also show that SpCas9-mediated cleavage is unaffected by DNA methylation and that the dosage of SpCas9 and sgRNA can be titrated to minimize off-target modification. To facilitate mammalian genome engineering applications, we provide a web-based software tool to guide the selection and validation of target sequences as well as off-target analyses.
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DOI:
10.1073/pnas.1019533108
发表时间:
2011-02-08
影响因子:
11.1
作者:
Mahfouz, Magdy M.;Li, Lixin;Zhu, Jian-Kang
通讯作者:
Zhu, Jian-Kang
影响因子:
4.8
作者:
Bobis-Wozowicz, Sylwia;Osiak, Anna;Cathomen, Toni
通讯作者:
Cathomen, Toni
影响因子:
56.9
作者:
Jinek, Martin;Chylinski, Krzysztof;Charpentier, Emmanuelle
通讯作者:
Charpentier, Emmanuelle
影响因子:
46.9
作者:
Cho, Seung Woo;Kim, Sojung;Kim, Jin-Soo
通讯作者:
Kim, Jin-Soo
影响因子:
64.8
作者:
Deltcheva, Elitza;Chylinski, Krzysztof;Sharma, Cynthia M.;Gonzales, Karine;Chao, Yanjie;Pirzada, Zaid A.;Eckert, Maria R.;Vogel, Joerg;Charpentier, Emmanuelle
通讯作者:
Charpentier, Emmanuelle