Researchers found that cancer-produced protein PNMA2, resembling a virus, triggers immune response in the brain, causing memory loss and cognitive impairment.

Researchers at the University of Utah Health have discovered that some cancers can produce a protein that resembles a virus, triggering an out-of-control immune response that may harm brain cells. This discovery explains the rapid-onset memory loss and cognitive impairment observed in anti-Ma2 paraneoplastic neurological syndrome, a rare but serious complication of cancer in which the body's immune system attacks the brain. This protein, called PNMA2, assembles into a virus-like structure that initiates an immune reaction, potentially causing brain cell damage. The study, published in Cell, provides new insights that might help direct future treatment strategies.

January 31, 2024
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