Precise gene deletion and replacement using the CRISPR/Cas9 system in human cells.
The prokaryotic type II CRISPR/Cas9 system has been adapted to perform targeted genome editing in cells and model organisms. Here, we describe targeted gene deletion and replacement in human cells via the CRISPR/Cas9 system using two guide RNAs. The system effectively generated targeted deletions of varied length, regardless of the transcriptional status of the target gene. It is notable that targeted gene deletions generated via CRISPR/Cas9 and two guide RNAs resulted in the formation of correct junctions at high efficiency. Moreover, in the presence of a homology repair donor, the CRISPR/Cas9 system could guide precise gene replacement. Our results illustrate that the CRISPR/Cas9 system can be used to precisely and effectively generate targeted deletions or gene replacement in human cells, which will facilitate characterization of functional domains in protein-coding genes as well as noncoding regulatory sequences in animal genomes.
['Zheng|Qiupeng|Q|', 'Cai|Xiaohong|X|', 'Tan|Meng How|MH|', 'Schaffert|Steven|S|', 'Arnold|Christopher P|CP|', 'Gong|Xue|X|', 'Chen|Chang-Zheng|CZ|', 'Huang|Shenglin|S|']
D064113:CRISPR-Cas Systems D017353:Gene Deletion D005821:Genetic Techniques D057809:HEK293 Cells D006801:Humans
deletion replacement CRISPR/Cas9 Genome editing