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bioRxiv · 10.1101/486704

Double Stranded DNA Damage and Genome Editing Trigger Ribosome Remodeling and Translational Shutdown

Abstract

DNA damage activates a robust transcriptional stress response, but much less is known about how DNA impacts translation. The advent of genome editing via a Cas9-induced DNA double-strand break has intensified interest in understanding cellular responses to DNA damage. Here we find that DNA double-strand breaks (DSBs) induced by Cas9 or other damaging agents lead to a reduction of core ribosomal proteins, RPS27A and RPL40, and that the loss of these proteins is post-transcriptional and p53-independent. DSBs furthermore lead to the shutdown of translation through phosphorylation of eukaryotic initiation factor 2 alpha, and altering these signals affects genome editing outcomes. This DSB translational response is widespread and precedes the transcriptional response. Our results demonstrate that even a single double-strand break can lead to ribosome remodeling and reduced translational output, and suggest caution in interpreting cellular phenotypes measured immediately after genome editing.

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BibTeXRIS

Riepe, C., Zelin, E., Wyman, S. K., Nguyen, D. N., Liang, J. R., Frankino, P. A., Meacham, Z. A., Vu, J. T., Marson, A., Ingolia, N. T., Corn, J. E.. 2018-12-05. Double Stranded DNA Damage and Genome Editing Trigger Ribosome Remodeling and Translational Shutdown. https://doi.org/10.1101/486704

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