Barrier Structure and Function Studies

The blood-brain barrier is a highly selective interface formed by specialized endothelial cells lining the brain's capillaries, reinforced by tight junction proteins and supported by surrounding pericytes and astrocytes — a collective structure known as the neurovascular unit. Together these cells regulate what enters and exits the central nervous system, protecting neural tissue from pathogens and fluctuating blood chemistry while supplying it with nutrients. When this barrier breaks down, as occurs in stroke, multiple sclerosis, Alzheimer's disease, and other neurological conditions, the consequences range from inflammation to accelerated neurodegeneration. A central challenge is understanding precisely how the different cell types signal to one another to maintain barrier integrity, and how that knowledge can be leveraged to design drugs capable of crossing into the brain without compromising the very protection the barrier provides.

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Keywords

Blood-Brain BarrierNeurovascular UnitTight JunctionsPericytesEndothelial CellsAstrocyte Interactions