Abstract
DNA base editors, one of the CRISPR-based genome editing tools, can induce targeted point mutations at desired sites. Their superiority is based on the fact that they can perform efficient and precise gene editing without generating a DNA double-strand break (DSB) or requiring a donor DNA template. Since they were first developed, significant efforts have been made to improve DNA base editors in order to overcome problems such as off-target edits on DNA/RNA and bystander mutations in editing windows. Here, we provide an overview of DNA base editors with a summary about the history of development of DNA base editors and report on efforts to improve them.
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