Bacteria turn a virus’ own weapon against it

Researchers have uncovered a new way bacteria detect viral attacks: a virus-produced enzyme cuts a bacterial sensor protein, triggering a self-destructing immune response. The discovery could lead to more effective phage therapies against antibiotic-resistant bacteria and provide insight into ancient immune mechanisms shared with humans. Bacteria turn a virus’ own weapon against it.

Bacteria turn a virus’ own weapon against it Science News from research organizations Bacteria turn a virus’ own weapon against it Date: October 9, 2026. Twitter Pinterest LinkedIN Email coli (blue) over three stages. Goodsell, RCSB Protein Data Bank and Scripps Research.

Doi: 10.2210/rcsb_pdb/goodsell-gallery-048 Scientists searching for new ways to treat bacterial infections are increasingly turning to viruses known as bacteriophages (phages). These viruses specifically target bacteria, allowing them to kill harmful microbes without damaging human cells. They can also attack bacteria that have developed resistance to antibiotics.

Phage therapy, however, faces a major obstacle.