Abstract
Prime editors have been delivered using DNA or RNA vectors. Here we demonstrate prime editing with purified ribonucleoprotein complexes. We introduced somatic mutations in zebrafish embryos with frequencies as high as 30% and demonstrate germline transmission. We also observed unintended insertions, deletions and prime editing guide RNA (pegRNA) scaffold incorporations. In HEK293T and primary human T cells, prime editing with purified ribonucleoprotein complexes introduced desired edits with frequencies of up to 21 and 7.5%, respectively.
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Data availability
Deep sequencing data will be deposited in the NCBI Sequence Read Archive (project no: PRJNA713914). Uncropped gel images in Fig. 1b (left) and Supplementary Fig. 2e can be found in Supplementary information. Source data are provided with this paper.
Code availability
The authors will make available all custom computer code used in this work upon request.
Change history
13 May 2021
A Correction to this paper has been published: https://doi.org/10.1038/s41587-021-00939-y
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Acknowledgements
This work was supported by the Hassenfeld Scholar Award (to J.-R.J.Y.), NIH no. R01 GM134069 (to J.-R.J.Y.), NIH no. RM1 HG009490 (to J.K.J. and L.P.), NIH no. R35 GM118158 (to J.K.J.) and National Human Genome Research Institute Genomic Innovator Award no. R35 HG010717 (to L.P.). The authors received funding from Defense Advanced Research Projects Agency Safe Genes program (HR0011-17-2-0042) for this research. The views, opinions and/or findings expressed should not be interpreted as representing the official views or policies of the Department of Defense or the U.S. Government. K.P. was funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) – Projektnummer 417577129. J.M. received support from the China Scholarship Council (no. 201808210354). A.S. received support from a John Hansen Research Grant from DKMS (no. DKMS-SLS-JHRG-2020-04). We thank K. K. Lam for technical assistance and K. K. Lam and J. Grünewald for discussions and technical advice. We thank L. Paul-Pottenplackel for help with revision of the manuscript.
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Contributions
K.P., W.Z., J.M., H.L., A.S., J.E.H., I.C.K., J.K.J. and J.-R.J.Y. designed the project. K.P., W.Z., J.M., H.L., A.S., J.E.H. and D.Y.K. performed the experiments. K.P., W.Z., J.M., H.L., A.S., J.E.H., I.C.K. and J.Y.H. developed the methods. K.P., H.L., K.C. and L.P. performed informatic analysis. M.V.M., J.K.J. and J.-R.J.Y. provided resources and overseeing. K.P., W.Z., J.M., A.S., H.L., J.K.J. and J.-R.J.Y. wrote the manuscript with input from all authors.
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Competing interests
J.K.J. has financial interests in Beam Therapeutics, Chroma Medicine (formerly known as YKY, Inc.), Editas Medicine, Excelsior Genomics, Pairwise Plants, Poseida Therapeutics, SeQure Dx, Transposagen Biopharmaceuticals and Verve Therapeutics (formerly known as Endcadia). K.P. has a financial interests in SeQure Dx, Inc.. L.P. has financial interests in Edilytics, SeQure Dx, Inc. and Excelsior Genomics. K.P. and D.Y.K. are paid consultants to Verve Therapeutics. K.C. is an employee, shareholder and officer of Edilytics, Inc. The interests of J.K.J., L.P., K.C., K.P. and D.Y.K. were reviewed and are managed by Massachusetts General Hospital and Partners HealthCare in accordance with their conflict of interest policies. M.V.M. is an inventor on patents related to adoptive cell therapies, held by Massachusetts General Hospital and University of Pennsylvania (some licensed to Novartis). M.V.M. holds equity in TCR2 and Century Therapeutics, and has served as a consultant for multiple companies involved in cell therapies. The remaining authors declare no competing interests.
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Supplementary information
Supplementary Information
Supplementary Figs. 1–14, Supplementary Notes 1–5 and Supplementary Data 1.
Supplementary Data
Uncropped gel image for Supplementary Fig. 2e.
Supplementary Tables
Supplementary Tables 1–16.
Source data
Source Data Fig. 1
Uncropped gel image for Fig. 1b, left panel.
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Petri, K., Zhang, W., Ma, J. et al. CRISPR prime editing with ribonucleoprotein complexes in zebrafish and primary human cells. Nat Biotechnol 40, 189–193 (2022). https://doi.org/10.1038/s41587-021-00901-y
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DOI: https://doi.org/10.1038/s41587-021-00901-y
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