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Targeting repair pathways with small molecules increases precise genome editing in pluripotent stem cells

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  • Stephan Riesenberg

    (Max-Planck-Institute for Evolutionary Anthropology)

  • Tomislav Maricic

    (Max-Planck-Institute for Evolutionary Anthropology)

Abstract

A now frequently used method to edit mammalian genomes uses the nucleases CRISPR/Cas9 and CRISPR/Cpf1 or the nickase CRISPR/Cas9n to introduce double-strand breaks which are then repaired by homology-directed repair using DNA donor molecules carrying desired mutations. Using a mixture of small molecules, the “CRISPY” mix, we achieve a 2.8- to 7.2-fold increase in precise genome editing with Cas9n, resulting in the introduction of the intended nucleotide substitutions in almost 50% of chromosomes or of gene encoding a blue fluorescent protein in 27% of cells, to our knowledge the highest editing efficiency in human induced pluripotent stem cells described to date. Furthermore, the CRISPY mix improves precise genome editing with Cpf1 2.3- to 4.0-fold, allowing almost 20% of chromosomes to be edited. The components of the CRISPY mix do not always increase the editing efficiency in the immortalized or primary cell lines tested, suggesting that employed repair pathways are cell-type specific.

Suggested Citation

  • Stephan Riesenberg & Tomislav Maricic, 2018. "Targeting repair pathways with small molecules increases precise genome editing in pluripotent stem cells," Nature Communications, Nature, vol. 9(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-04609-7
    DOI: 10.1038/s41467-018-04609-7
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    Cited by:

    1. Sandra Wimberger & Nina Akrap & Mike Firth & Johan Brengdahl & Susanna Engberg & Marie K. Schwinn & Michael R. Slater & Anders Lundin & Pei-Pei Hsieh & Songyuan Li & Silvia Cerboni & Jonathan Sumner &, 2023. "Simultaneous inhibition of DNA-PK and Polϴ improves integration efficiency and precision of genome editing," Nature Communications, Nature, vol. 14(1), pages 1-18, December.
    2. Juan A. Perez-Bermejo & Oghene Efagene & William M. Matern & Jeffrey K. Holden & Shaheen Kabir & Glen M. Chew & Gaia Andreoletti & Eniola Catton & Craig L. Ennis & Angelica Garcia & Trevor L. Gerstenb, 2024. "Functional screening in human HSPCs identifies optimized protein-based enhancers of Homology Directed Repair," Nature Communications, Nature, vol. 15(1), pages 1-16, December.
    3. Michael Kosicki & Felicity Allen & Frances Steward & Kärt Tomberg & Yangyang Pan & Allan Bradley, 2022. "Cas9-induced large deletions and small indels are controlled in a convergent fashion," Nature Communications, Nature, vol. 13(1), pages 1-11, December.

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