Researchers studying bacterial CBASS immune systems found that certain phages trigger a defense response by using proteases that cleave host sensor proteins. Rather than detecting viral genetic material directly, the bacteria recognize the damage caused by the invader's own enzymes. This activation mechanism forces an infected cell to commit suicide, preventing the virus from spreading to neighboring cells.
This discovery matters because CBASS shares an evolutionary ancestor with innate immune pathways found in humans. While it could eventually help engineers improve phage therapies against resistant bacteria, the immediate value is purely foundational. We are looking at a billion-year-old logic for detecting cellular damage that still operates inside our own bodies today.
more: https://www.sciencedaily.com/releases/2026/10/261007042100.htm
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