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A streamlined base editor engineering strategy to reduce bystander editing
A simplified method to reduce unwanted changes in base editing
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Abstract
Engineered base editor ABE-NW1 achieves robust A-to-G editing efficiencies within an of four nucleotides.
- Integrating a naturally occurring oligonucleotide binding module into TadA-8e enhances editing specificity.
- ABE-NW1 shows significantly decreased off-target activity compared to ABE8e while maintaining similar on-target efficiency.
- TadA-NW1 can be reprogrammed for specific editing tasks, including cytidine deamination and adenine transversion.
- In a cystic fibrosis cell model, ABE-NW1 effectively corrects the CFTR W1282X variant, a common mutation associated with the disease.
- The engineered base editors allow for more precise , which could improve therapeutic applications.
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Key numbers
15.2×
Decrease in
Bystander-to-target editing ratio at specific positions compared to ABE8e.
36.6 ± 0.551%
Perfect correction rate
Correction of the CFTR W1282X mutation in lung epithelial cells.
4 nucleotides
Narrowed
size achieved by -NW1 compared to ABE8e.