清脆的
Cas9
生物
计算生物学
引导RNA
遗传学
基因组编辑
遗传筛选
索引
基因组
核糖核酸
基因
表型
单核苷酸多态性
基因型
作者
Julia Joung,Silvana Konermann,Jonathan S. Gootenberg,Omar O. Abudayyeh,Randall J. Platt,Mark D. Brigham,Neville E. Sanjana,Feng Zhang
出处
期刊:Nature Protocols
[Springer Nature]
日期:2017-03-23
卷期号:12 (4): 828-863
被引量:1000
标识
DOI:10.1038/nprot.2017.016
摘要
Forward genetic screens are powerful tools for the unbiased discovery and functional characterization of specific genetic elements associated with a phenotype of interest. Recently, the RNA-guided endonuclease Cas9 from the microbial CRISPR (clustered regularly interspaced short palindromic repeats) immune system has been adapted for genome-scale screening by combining Cas9 with pooled guide RNA libraries. Here we describe a protocol for genome-scale knockout and transcriptional activation screening using the CRISPR-Cas9 system. Custom- or ready-made guide RNA libraries are constructed and packaged into lentiviral vectors for delivery into cells for screening. As each screen is unique, we provide guidelines for determining screening parameters and maintaining sufficient coverage. To validate candidate genes identified by the screen, we further describe strategies for confirming the screening phenotype, as well as genetic perturbation, through analysis of indel rate and transcriptional activation. Beginning with library design, a genome-scale screen can be completed in 9-15 weeks, followed by 4-5 weeks of validation.
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