CRISPR-Sirius: RNA scaffolds for signal amplification in genome imaging.

CRISPR-Sirius: RNA scaffolds for signal amplification in genome imaging.
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DOI:
10.1038/s41592-018-0174-0
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发表时间:
2018-11
期刊:
影响因子:
48
通讯作者:
Pederson T
Pederson T
中科院分区:
生物学1区
文献类型:
--
作者:
Ma H;Tu LC;Naseri A;Chung YC;Grunwald D;Zhang S;Pederson T

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聚类规则间隔短回文重复序列(CRISPR)引导RNA支架已被用于携带荧光蛋白的多个结合位点,以增强基因组位点的活细胞成像亮度。然而,许多这些修饰导致引导RNA不稳定,从而产生比预期更低的基因组标记效率。在这里,我们介绍了CRISPR-Sirius,基于八元体阵列的适体,赋予了增强的引导RNA稳定性和亮度,并提供了该平台的初步生物学应用。
Clustered regularly interspaced short palindromic repeats (CRISPR) guide RNA scaffolds have been adapted to carry multiple binding sites for fluorescent proteins to enhance brightness for live cell imaging of genomic loci. However, many of these modifications result in guide RNA instability and thus produce lower genome-labeling efficiency than anticipated. Here we introduce CRISPR-Sirius, based on octet arrays of aptamers conferring both enhanced guide RNA stability and brightness, and provide initial biological applications of this platform.
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