tCRISPRi: tunable and reversible, one-step control of gene expression.
tCRISPRi: tunable and reversible, one-step control of gene expression.
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DOI:
10.1038/srep39076
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发表时间:
2016-12-20
影响因子:
4.6
通讯作者:
Jun S
中科院分区:
文献类型:
--
作者:
Li XT;Jun Y;Erickstad MJ;Brown SD;Parks A;Court DL;Jun S
The ability to control the level of gene expression is a major quest in biology. A widely used approach employs deletion of a nonessential gene of interest (knockout), or multi-step recombineering to move a gene of interest under a repressible promoter (knockdown). However, these genetic methods are laborious, and limited for quantitative study. Here, we report a tunable CRISPR-cas system, “tCRISPRi”, for precise and continuous titration of gene expression by more than 30-fold. Our tCRISPRi system employs various previous advancements into a single strain: (1) We constructed a new strain containing a tunable arabinose operon promoter PBAD to quantitatively control the expression of CRISPR-(d)Cas protein over two orders of magnitude in a plasmid-free system. (2) tCRISPRi is reversible, and gene expression is repressed under knockdown conditions. (3) tCRISPRi shows significantly less than 10% leaky expression. (4) Most important from a practical perspective, construction of tCRISPRi to target a new gene requires only one-step of oligo recombineering. Our results show that tCRISPRi, in combination with recombineering, provides a simple and easy-to-implement tool for gene expression control, and is ideally suited for construction of both individual strains and high-throughput tunable knockdown libraries.
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影响因子:
4.5
作者:
Hill NS;Kadoya R;Chattoraj DK;Levin PA
通讯作者:
Levin PA
DOI:
10.1126/science.aaf5573
发表时间:
2016-08-05
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Abudayyeh OO;Gootenberg JS;Konermann S;Joung J;Slaymaker IM;Cox DB;Shmakov S;Makarova KS;Semenova E;Minakhin L;Severinov K;Regev A;Lander ES;Koonin EV;Zhang F
通讯作者:
Zhang F
DOI:
10.1038/nrmicro.2016.26
发表时间:
2016-04
期刊:
Nature reviews. Microbiology
影响因子:
--
作者:
Haeusser DP;Margolin W
通讯作者:
Margolin W
影响因子:
2
作者:
Michel, Denis
通讯作者:
Michel, Denis
影响因子:
16.6
作者:
Jacobs, Jake Z.;Ciccaglione, Keith M.;Tournier, Vincent;Zaratiegui, Mikel
通讯作者:
Zaratiegui, Mikel