A programmable dual-RNA-guided DNA endonuclease in adaptive bacterial immunity.
Martin Jinek,Krzysztof Chylinski,Krzysztof Chylinski,Ines Fonfara,Michael H. Hauer,Jennifer A. Doudna,Emmanuelle Charpentier +6 more
TLDR
This study reveals a family of endonucleases that use dual-RNAs for site-specific DNA cleavage and highlights the potential to exploit the system for RNA-programmable genome editing.Abstract:
Clustered regularly interspaced short palindromic repeats (CRISPR)/CRISPR-associated (Cas) systems provide bacteria and archaea with adaptive immunity against viruses and plasmids by using CRISPR RNAs (crRNAs) to guide the silencing of invading nucleic acids. We show here that in a subset of these systems, the mature crRNA that is base-paired to trans-activating crRNA (tracrRNA) forms a two-RNA structure that directs the CRISPR-associated protein Cas9 to introduce double-stranded (ds) breaks in target DNA. At sites complementary to the crRNA-guide sequence, the Cas9 HNH nuclease domain cleaves the complementary strand, whereas the Cas9 RuvC-like domain cleaves the noncomplementary strand. The dual-tracrRNA:crRNA, when engineered as a single RNA chimera, also directs sequence-specific Cas9 dsDNA cleavage. Our study reveals a family of endonucleases that use dual-RNAs for site-specific DNA cleavage and highlights the potential to exploit the system for RNA-programmable genome editing.read more
Citations
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Journal ArticleDOI
Efficient genome editing in zebrafish using a CRISPR-Cas system
Woong Y. Hwang,Yanfang Fu,Deepak Reyon,Morgan L. Maeder,Shengdar Q. Tsai,Jeffry D. Sander,Randall T. Peterson,Randall T. Peterson,Jing-Ruey J. Yeh,J. Keith Joung +9 more
TL;DR: It is shown that the CRISPR-Cas system functions in vivo to induce targeted genetic modifications in zebrafish embryos with efficiencies similar to those obtained using zinc finger nucleases and transcription activator-like effector nucleases.
Journal ArticleDOI
Optimized sgRNA design to maximize activity and minimize off-target effects of CRISPR-Cas9
John G. Doench,Nicolo Fusi,Meagan E Sullender,Mudra Hegde,Emma W Vaimberg,Katherine F Donovan,Ian Smith,Zuzana Tothova,Zuzana Tothova,Craig B. Wilen,Robert C. Orchard,Herbert W. Virgin,Jennifer Listgarten,David E. Root +13 more
TL;DR: Recently devised sgRNA design rules are used 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, and a metric to predict off-target sites is developed.
Journal ArticleDOI
Genetic Screens in Human Cells Using the CRISPR-Cas9 System
TL;DR: In this paper, a pooled, loss-of-function genetic screening approach suitable for both positive and negative selection that uses a genome-scale lentiviral single-guide RNA (sgRNA) library was described.
Journal ArticleDOI
RNA-guided editing of bacterial genomes using CRISPR-Cas systems
Wenyan Jiang,David Bikard,David Daniel Cox,David Daniel Cox,Feng Zhang,Feng Zhang,Luciano A. Marraffini +6 more
TL;DR: The exhaustively analyze dual-RNA:Cas9 target requirements to define the range of targetable sequences and show strategies for editing sites that do not meet these requirements, suggesting the versatility of this technique for bacterial genome engineering.
Journal ArticleDOI
Search-and-replace genome editing without double-strand breaks or donor DNA
Andrew V. Anzalone,Andrew V. Anzalone,Andrew V. Anzalone,Peyton B. Randolph,Peyton B. Randolph,Peyton B. Randolph,Jessie Rose Davis,Jessie Rose Davis,Jessie Rose Davis,Alexander A. Sousa,Alexander A. Sousa,Alexander A. Sousa,Luke W. Koblan,Luke W. Koblan,Luke W. Koblan,Jonathan M. Levy,Jonathan M. Levy,Jonathan M. Levy,Peter J. Chen,Peter J. Chen,Peter J. Chen,Christine D. Wilson,Christine D. Wilson,Christine D. Wilson,Gregory A. Newby,Gregory A. Newby,Gregory A. Newby,Aditya Raguram,Aditya Raguram,Aditya Raguram,David R. Liu,David R. Liu,David R. Liu +32 more
TL;DR: A new DNA-editing technique called prime editing offers improved versatility and efficiency with reduced byproducts compared with existing techniques, and shows potential for correcting disease-associated mutations.
References
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Journal ArticleDOI
CRISPR RNA maturation by trans -encoded small RNA and host factor RNase III
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