tgCRISPRi: efficient gene knock-down using truncated gRNAs and catalytically active Cas9.
tgCRISPRi: efficient gene knock-down using truncated gRNAs and catalytically active Cas9.
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DOI:
10.1038/s41467-023-40836-3
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发表时间:
2023-09-11
影响因子:
16.6
通讯作者:
Bier, Ethan
中科院分区:
文献类型:
--
作者:
Auradkar, Ankush;Guichard, Annabel;Kaduwal, Saluja;Sneider, Marketta;Bier, Ethan
CRISPR-interference (CRISPRi), a highly effective method for silencing genes in mammalian cells, employs an enzymatically dead form of Cas9 (dCas9) complexed with one or more guide RNAs (gRNAs) with 20 nucleotides (nt) of complementarity to transcription initiation sites of target genes. Such gRNA/dCas9 complexes bind to DNA, impeding transcription of the targeted locus. Here, we present an alternative gene-suppression strategy using active Cas9 complexed with truncated gRNAs (tgRNAs). Cas9/tgRNA complexes bind to specific target sites without triggering DNA cleavage. When targeted near transcriptional start sites, these short 14–15 nts tgRNAs efficiently repress expression of several target genes throughout somatic tissues in Drosophila melanogaster without generating any detectable target site mutations. tgRNAs also can activate target gene expression when complexed with a Cas9-VPR fusion protein or modulate enhancer activity, and can be incorporated into a gene-drive, wherein a traditional gRNA sustains drive while a tgRNA inhibits target gene expression. CRISPRi is used for gene silencing in mammalian cells. Here the authors report a gene-suppression/activation strategy using active Cas9 complexed with truncated gRNAs (tgCRISPRi/a) without causing DNA cleavage: they use this to repress or activate expression of several target genes throughout somatic tissues in Drosophila melanogaster.
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影响因子:
64.8
作者:
Konermann S;Brigham MD;Trevino AE;Joung J;Abudayyeh OO;Barcena C;Hsu PD;Habib N;Gootenberg JS;Nishimasu H;Nureki O;Zhang F
通讯作者:
Zhang F
影响因子:
64.8
作者:
通讯作者:
--
DOI:
10.1126/science.aaa5945
发表时间:
2015-04-24
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Gantz VM;Bier E
通讯作者:
Bier E
影响因子:
64.5
作者:
Hsu PD;Lander ES;Zhang F
通讯作者:
Zhang F
影响因子:
56.9
作者:
Jinek, Martin;Chylinski, Krzysztof;Charpentier, Emmanuelle
通讯作者:
Charpentier, Emmanuelle