AI Models Design Working Bacteriophage Genomes That Kill E. coli, Preprint Shows

Overview

• Researchers trained genome language models on millions of phage sequences and used the small, well‑characterized ΦX174 genome as the testbed.
• From 302 AI‑generated candidates, 16 synthesized genomes produced viable phages that replicated and killed Escherichia coli in controlled experiments.
• Some designs were effective against E. coli strains resistant to the natural ΦX174, with one phage reported to expand up to 65 times faster in tests.
• The work appears as a bioRxiv preprint by Samuel H. King and colleagues and has not yet undergone peer review.
• The authors say they trained on phages considered harmless to humans and emphasize potential personalized phage therapies alongside biosafety and regulatory considerations.