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An efficient method to generate conditional knockout cell lines for essential genes by combination of auxin-inducible degron tag and CRISPR/Cas9

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Abstract

Generation of cells with a loss-of-function mutation in a gene (knockout cells) is a valuable technique for studying the function of a given gene product. However, if the product of the target gene is essential for cell viability, conditional knockout cell lines must be generated. Recently, as gene editing technology using CRISPR/Cas9 has developed, it has become possible to produce conditional knockout cell lines using this technique. However, to obtain final conditional knockout cell lines, it is necessary to perform several experiments with multiple complicated steps. In this paper, we introduce an easy and efficient method to generate conditional knockout cell lines based on combining auxin-inducible degron (AID) technology with CRISPR/Cas9 gene editing. Our method only requires performing a single transfection and is therefore an easy and rapid method to obtain a conditional knockout cell line.

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Abbreviations

AID:

Auxin-inducible degron

CRISPR:

Clustered regularly interspaced short palindromic repeat

Cas9:

CRISPR-associated protein 9

sgRNA:

Single-guide RNA

CENP:

Centromere protein

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Acknowledgments

We are very grateful to R. Fukuoka and Y. Fukagawa for their technical assistance. This work was supported by MEXT KAKENHI Grant Numbers 25221106 and 15H05972 to TF and MEXT KAKENHI Grant Number 17K15041 to KN.

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Correspondence to Tatsuo Fukagawa.

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Responsible editor: Irina Solovei.

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Nishimura, K., Fukagawa, T. An efficient method to generate conditional knockout cell lines for essential genes by combination of auxin-inducible degron tag and CRISPR/Cas9. Chromosome Res 25, 253–260 (2017). https://doi.org/10.1007/s10577-017-9559-7

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  • DOI: https://doi.org/10.1007/s10577-017-9559-7

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