What researchers are trying
Bridge RNAs guide a recombinase by encoding recognition of both DNA partners, creating a programmable mechanism for rearranging genetic material.
Bridge-RNA programmable DNA recombination
Can RNA programmably specify both target and donor DNA to insert, excise or invert large sequences without relying on conventional CRISPR cutting and repair?
Why it matters
The mechanism could broaden genome engineering from local edits toward large, sequence-programmable rearrangements and insertions.
Evidence boundary
The original 2024 work was early-stage and bacterial. Efficiency, specificity, delivery and control in mammalian cells require separate validation.
Organizations represented
Arc Institute · UC Berkeley · Stanford
Demonstrated evidence
What has actually been shown.
- Back-to-back peer-reviewed Nature studies established the biochemical and structural mechanism in bacterial systems.
Unresolved questions
- Can the system work efficiently and specifically in human cells?
- How are off-target recombination and repeated sequences controlled?
- Can delivery support therapeutically relevant tissues and cargo sizes?
Signals to watch next
- Mammalian-cell demonstrations
- Megabase-scale editing
- Delivery systems
- Off-target profiling
Connected evidence graph
Related BioAtlas model passports.
Evo / Evo 2
A genomic foundation model that reads and writes DNA at scale.
4/7 evidence fields documentedProGen / ProGen2 / ProGen3
GPT-style language models that write functional proteins.
3/7 evidence fields documentedAlphaGenome
Reading the genome's 'dark matter' at base-pair resolution.
2/7 evidence fields documentedPrimary and evaluation sources