The blood-brain barrier is a physiological blockade that alters the permeability of tiny blood vessels called capillaries in the brain. Its purpose is to protect the brain by preventing certain drugs, pathogens and other foreign substances from entering brain tissues. The barrier has also been a persistent roadblock to treating brain disease with drugs.The scientists experimented with a set of derivative components of the fatty protein apoE, which binds to fat receptors on endothelial cells that form the inside surface of capillaries in the blood-brain barrier. They discovered that tagging some of the apoE components to the IDUA enzyme allowed the modified protein to attach to endothelial cells and cross through the cells to reach brain tissues.
Experimental Therapy Crosses Blood-Brain Barrier To Treat Neurological Disease
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