Base editing: precision chemistry on the genome and transcriptome of living cells.
Level 5 - mechanism / opinion, no new human data
Narrative review of bench technology without primary human or clinical study data
PubMed 30323312 · doi:10.1038/s41576-018-0059-1
What was done
This narrative review summarizes base-editing strategies designed to introduce targeted point mutations into cellular genomic DNA and RNA without creating double-stranded breaks. The review covers recent advances expanding base editor scope, specificity, precision, and in vivo delivery methods, while discussing current limitations and future directions for research and therapeutic applications.
What was found
The abstract reports no numerical findings or quantitative metrics. It describes the architecture of DNA base editors (catalytically disabled CRISPR nucleases fused to nucleobase deaminase enzymes and optionally DNA glycosylase inhibitors) and RNA base editors, noting that these systems directly convert one base or base pair into another to install point mutations in non-dividing cells without generating excess undesired editing by-products.
Why it matters
Base editing offers a method to precisely alter single nucleotides in cellular DNA and RNA without causing double-stranded DNA breaks, expanding options for functional genomics and targeted gene therapy.
Limits
The abstract provides no primary empirical data, sample sizes, quantitative comparisons of editing efficiency, or specific measures of off-target activity across in vivo models.
Cited by
- supports David Liu at Harvard developed CRISPR base editors that change nucleotides at targeted sites without generating double-stranded DNA breaks by using a deaminase domain.