Stanford researchers use large genome models to design new viruses
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Stanford University researchers use large genome models to generate genomes of bacteriophages — viruses that infect bacteria. The generated viruses are closely related to existing ones but possess distinct features that would be difficult to evolve. The team warns that similar AI could eventually be used to design viruses targeting vertebrates, urging proactive preparation.
Large Genome Models
Large genome models are AI systems trained on DNA sequences to predict and generate genetic code, analogous to how language models process text. DNA uses only four nucleotide bases—adenine, thymine, cytosine, and guanine—but genomes contain complex patterns that often remain poorly understood. When trained on sufficient genomic data, these models can output DNA that encodes functional proteins, even mimicking gene structures found in complex cells.
Engineered Bacteriophages
Stanford University researchers used these models to generate genomes of bacteriophages—viruses that infect bacteria. All generated viruses were closely related to existing ones, yet they incorporated distinct features that would be challenging to evolve naturally. The models successfully output viral DNA that retained biological functionality while introducing novel variations.
Biosecurity Concerns
The research team cautions that similar AI methods could eventually be used to design viruses targeting vertebrate hosts, including humans. They recommend proactive preparation and oversight, emphasizing that the leap from bacterial to mammalian viruses is technically feasible given advances in genomic data and computing power. The findings highlight a growing need for ethical guidelines in AI-driven synthetic biology.
What's Next
Regulators and scientific institutions may consider new frameworks for AI-generated biological agents. It remains unclear how quickly governance mechanisms can adapt to the accelerating capabilities of genomic AI.
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Stanford researchers use large genome models to design new viruses
