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Efficient targeted DNA editing and replacement in Chlamydomonas reinhardtii using Cpf1 ribonucleoproteins and single-stranded DNA.


ABSTRACT: The green alga Chlamydomonas reinhardtii is an invaluable reference organism to research fields including algal, plant, and ciliary biology. Accordingly, decades-long standing inefficiencies in targeted nuclear gene editing broadly hinder Chlamydomonas research. Here we report that single-step codelivery of CRISPR/Cpf1 ribonucleoproteins with single-stranded DNA repair templates results in precise and targeted DNA replacement with as much as ?10% efficiency in C. reinhardtii We demonstrate its use in transgene- and selection-free generation of sequence-specific mutations and epitope tagging at an endogenous locus. As the direct delivery of gene-editing reagents bypasses the use of transgenes, this method is potentially applicable to a wider range of species without the need to develop methods for stable transformation.

SUBMITTER: Ferenczi A 

PROVIDER: S-EPMC5754772 | biostudies-literature | 2017 Dec

REPOSITORIES: biostudies-literature

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Efficient targeted DNA editing and replacement in <i>Chlamydomonas reinhardtii</i> using Cpf1 ribonucleoproteins and single-stranded DNA.

Ferenczi Aron A   Pyott Douglas Euan DE   Xipnitou Andromachi A   Molnar Attila A  

Proceedings of the National Academy of Sciences of the United States of America 20171205 51


The green alga <i>Chlamydomonas reinhardtii</i> is an invaluable reference organism to research fields including algal, plant, and ciliary biology. Accordingly, decades-long standing inefficiencies in targeted nuclear gene editing broadly hinder <i>Chlamydomonas</i> research. Here we report that single-step codelivery of CRISPR/Cpf1 ribonucleoproteins with single-stranded DNA repair templates results in precise and targeted DNA replacement with as much as ∼10% efficiency in <i>C. reinhardtii</i>  ...[more]

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