New erasable serum markers reveal fast, subtle changes in brain gene activity

Rice University bioengineers developed "erasable" serum markers that can be selectively removed from the bloodstream using enzymes, allowing researchers to detect previously unnoticed subtle changes in brain gene activity. Traditional serum markers persist in blood for hours, masking short-term fluctuations, but this system removes 90% of background signals within 30 minutes through a single enzyme injection. The breakthrough enables dynamic monitoring of brain activity through blood tests and could revolutionize diagnostics for neurological disorders, tumors, and other diseases.