Small molecule-triggered Cas9 protein with improved genome-editing specificity.

Small molecule-triggered Cas9 protein with improved genome-editing specificity.
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DOI:
10.1038/nchembio.1793
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发表时间:
2015-05
影响因子:
14.8
通讯作者:
Liu, David R.
Liu, David R.
中科院分区:
生物学1区
文献类型:
--
作者:
Davis, Kevin M.;Pattanayak, Vikram;Thompson, David B.;Zuris, John A.;Liu, David R.

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直接调节基因组编辑蛋白的活性有可能通过降低靶位点修饰后的活性来增加其特异性。我们开发了Cas9核酸酶,其通过在Cas9中的特定位置插入进化的4-羟基他莫昔芬(4-HT)响应性内含肽而被细胞可渗透的小分子的存在激活。在人类细胞中,条件活性Cas9修饰靶基因组位点的特异性比野生型Cas9高25倍。
Directly modulating the activity of genome-editing proteins has the potential to increase their specificity by reducing activity following target locus modification. We developed Cas9 nucleases that are activated by the presence of a cell-permeable small molecule by inserting an evolved 4-hydroxytamoxifen (4-HT)-responsive intein at specific positions in Cas9. In human cells, conditionally active Cas9s modify target genomic sites with up to 25-fold higher specificity than wild-type Cas9.
一个 iCRISPR 平台,用于在人类多能干细胞中进行快速、可多重、可诱导的基因组编辑。
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