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Fast and cloning-free CRISPR/Cas9-mediated genomic editing in mammalian cells.


ABSTRACT: CHoP-In (CRISPR/Cas9-mediated Homology-independent PCR-product integration) is a fast, non-homologous end-joining based, strategy for genomic editing in mammalian cells. There is no requirement for cloning in generation of the integration donor, instead the desired integration donor is produced as a polymerase chain reaction (PCR) product, flanked by the Cas9 recognition sequences of the target locus. When co-transfected with the cognate Cas9 and guide RNA, double strand breaks are introduced at the target genomic locus and at both ends of the PCR product. This allows incorporation into the genomic locus via hon-homologous end joining. The approach is versatile, allowing N-terminal, C-terminal or internal tag integration and gives predictable genomic integrations, as demonstrated for a selection of well characterised membrane trafficking proteins. The lack of donor vectors offers advantages over existing methods in terms of both speed and hands-on time. As such this approach will be a useful addition to the genome editing toolkit of those working in mammalian cell systems.

SUBMITTER: Manna PT 

PROVIDER: S-EPMC6899835 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature

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Fast and cloning-free CRISPR/Cas9-mediated genomic editing in mammalian cells.

Manna Paul T PT   Davis Luther J LJ   Robinson Margaret S MS  

Traffic (Copenhagen, Denmark) 20191017 12


CHoP-In (CRISPR/Cas9-mediated Homology-independent PCR-product integration) is a fast, non-homologous end-joining based, strategy for genomic editing in mammalian cells. There is no requirement for cloning in generation of the integration donor, instead the desired integration donor is produced as a polymerase chain reaction (PCR) product, flanked by the Cas9 recognition sequences of the target locus. When co-transfected with the cognate Cas9 and guide RNA, double strand breaks are introduced at  ...[more]

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