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Small-molecule inhibitors of histone deacetylase improve CRISPR-based adenine base editing

Cited 6 time in Web of Science Cited 9 time in Scopus
Issue Date
2021-02
Citation
Nucleic Acids Research, Vol.49 No.4, pp.2390-2399
Abstract
CRISPR-based base editors (BEs) are widely used to induce nucleotide substitutions in living cells and organisms without causing the damaging DNA double-strand breaks and DNA donor templates. Cytosine BEs that induce C:G to T:A conversion and adenine BEs that induce A:T to G:C conversion have been developed. Various attempts have been made to increase the efficiency of both BEs; however, their activities need to be improved for further applications. Here, we describe a fluorescent reporter-based drug screening platform to identify novel chemicals with the goal of improving adenine base editing efficiency. The reporter system revealed that histone deacetylase inhibitors, particularly romidepsin, enhanced base editing efficiencies by up to 4.9-fold by increasing the expression levels of proteins and target accessibility. The results support the use of romidepsin as a viable option to improve base editing efficiency in biomedical research and therapeutic genome engineering.
ISSN
0305-1048
URI
https://hdl.handle.net/10371/179110
DOI
https://doi.org/10.1093/nar/gkab052
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