Drug tricks cancer cells by impersonating a virus

A new cancer drug helps the immune system destroy tumors by impersonating a virus and “infecting” cancer cells.

The drug, called BO-112, is in human trials and mimics the structure of a double-stranded RNA molecule, a type of genetic material found in some viruses. Viruses inject their RNA into cells during infection, but cells can spot this viral RNA using specific receptors, and call upon the immune system to intervene when viruses strike.

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