First AI-generated complete genomes: Evo models design viable bacteriophages that kill resistant E. coli
Brian Hie's lab used the Evo 1 and Evo 2 genome language models to generate whole ΦX174-like bacteriophage genomes. Of ~285–300 synthesised designs, 16 were viable. Some rapidly overcame ΦX174-resistant E. coli, and one used an evolutionarily distant DNA-packaging protein. Preprint 12 Sep 2025; published in Science on 6 Aug 2026.
Key facts
- Generated full ~5.4 kb ΦX174-family genomes; ~285–300 synthesised, 16 viable
- AI phage cocktails overcame ΦX174-resistant E. coli strains
- Cryo-EM showed one phage using a packaging protein from a distant lineage
- Raised biosecurity discussion about generative design of self-replicating agents
Science result
- Field
- biology / synthetic biology / virology
- Problem
- Designing entire functional genomes, not just single genes or proteins
- Result
- First viable organisms (bacteriophages) whose complete genomes were designed by a generative AI model.
- AI system
- Evo 1, Evo 2
- Human role
- Human-led with AI tools: humans set constraints, synthesised and tested genomes
- Verification
- Peer-reviewed in Science (2026); lab-validated
- Status
- confirmed
- Why surprising
- AI designed whole, working genomes of replicating biological entities, some with gene combinations unlike any natural phage.
What happened
The team prompted genome language models to write complete phage genomes, synthesised hundreds, and found 16 that infected and killed bacteria, including strains resistant to the natural phage.
Why it matters
It is a milestone toward AI-designed life forms and phage therapies against resistant bacteria, and a biosecurity flashpoint.
Changelog
- 2026-09-29: created
Related events
Sources (4)
- paperbioRxiv: generative design of novel bacteriophages with genome language models
- officialArc Institute: first AI-designed synthetic phage
- pressStanford News: Evo 2 AI tool designs E. coli-killing bacteriophages (Science, Aug 2026)
- pressC&EN: AI program designs new bacteriophages
id: 2025-09-12-ai-generated-phage-genomes · updated 2026-09-29 · open in the interactive timeline