Incorporation of bridged nucleic acids into CRISPR RNAs improves Cas9 endonuclease specificity.

Incorporation of bridged nucleic acids into CRISPR RNAs improves Cas9 endonuclease specificity.
复制标题

DOI:
10.1038/s41467-018-03927-0
复制
发表时间:
2018-04-13
影响因子:
16.6
通讯作者:
Hubbard BP
Hubbard BP
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Cromwell CR;Sung K;Park J;Krysler AR;Jovel J;Kim SK;Hubbard BP

文献摘要

参考文献

被引文献

相似文献

当将CRISPR-Cas9基因编辑技术应用于功能遗传学和人类治疗应用时,脱靶DNA切割是最重要的问题。在这里,我们表明,在CRISPR-RNA(crRNA)的特定位置掺入下一代桥接核酸(2′,4 ′-BNANC[N-Me])以及锁核酸(LNA)广泛地减少了Cas9在体外和细胞中的脱靶DNA切割几个数量级。使用单分子FRET实验,我们表明BNANC掺入减缓了Cas9动力学,并通过诱导脱靶序列的高度动态crRNA-DNA双链体来提高特异性,这缩短了切割能力“拉链”构象中的停留时间。除了描述一种用于提高基于CRISPR/Cas9的基因编辑精度的强大技术外,这项研究还阐明了合成核酸的应用。最小化脱靶效应是CRISPR-Cas9治疗应用的重要关注点。在这里,作者表明,将桥接或锁定核酸并入crRNA中可以改善编辑动力学并减少脱靶切割。
Off-target DNA cleavage is a paramount concern when applying CRISPR-Cas9 gene-editing technology to functional genetics and human therapeutic applications. Here, we show that incorporation of next-generation bridged nucleic acids (2′,4′-BNANC[N-Me]) as well as locked nucleic acids (LNA) at specific locations in CRISPR-RNAs (crRNAs) broadly reduces off-target DNA cleavage by Cas9 in vitro and in cells by several orders of magnitude. Using single-molecule FRET experiments we show that BNANC incorporation slows Cas9 kinetics and improves specificity by inducing a highly dynamic crRNA–DNA duplex for off-target sequences, which shortens dwell time in the cleavage-competent, “zipped” conformation. In addition to describing a robust technique for improving the precision of CRISPR/Cas9-based gene editing, this study illuminates an application of synthetic nucleic acids. Minimizing off-target effects is an important concern for therapeutic applications of CRISPR-Cas9. Here, the authors show that incorporating bridged or locked nucleic acids into crRNA improves editing kinetics and reduces off-target cleavage.
DOI: 10.1038/nbt.2808
发表时间: 2014-03
影响因子: 46.9
作者:
通讯作者: --
DOI: 10.1038/nature13579
发表时间: 2014-09-25
期刊: NATURE
影响因子: 64.8
作者:
Anders, Carolin;Niewoehner, Ole;Duerst, Alessia;Jinek, Martin
通讯作者: Jinek, Martin
DOI: 10.1038/nature17946
发表时间: 2016-05-19
期刊: Nature
影响因子: 64.8
作者:
Komor AC;Kim YB;Packer MS;Zuris JA;Liu DR
通讯作者: Liu DR
DOI: 10.1038/nbt.3290
发表时间: 2015-09
影响因子: 46.9
作者:
Hendel A;Bak RO;Clark JT;Kennedy AB;Ryan DE;Roy S;Steinfeld I;Lunstad BD;Kaiser RJ;Wilkens AB;Bacchetta R;Tsalenko A;Dellinger D;Bruhn L;Porteus MH
通讯作者: Porteus MH
DOI: 10.1126/science.aab1452
发表时间: 2015-06-26
期刊: SCIENCE
影响因子: 56.9
作者:
Jiang, Fuguo;Zhou, Kaihong;Doudna, Jennifer A.
通讯作者: Doudna, Jennifer A.