Blood-brain barrier endothelial cell (BBB EC (not universally standardized, but commonly used in literature))

Blood-brain barrier endothelial cells are highly specialized vascular endothelial cells that line the cerebral microvasculature and form the physical basis of the blood-brain barrier (BBB). These cells are characterized by continuous tight junctions composed primarily of claudins and occludin proteins, which restrict paracellular diffusion between blood and brain tissue[1][3][6]. They possess low rates of pinocytosis, express various influx and efflux transporters for selective molecular trafficking, and are supported structurally by pericytes, astrocyte end-feet, basement membrane components, and other elements within the neurovascular unit[2][3][7]. Their primary function is to maintain CNS homeostasis by tightly regulating entry/exit of ions, nutrients (such as glucose via GLUT1), amino acids, neurotransmitters, metabolic waste products—and preventing passage of pathogens or toxins. Dysfunction or breakdown in these cells’ properties is implicated in a range of neurological diseases including neurodegeneration and inflammation[6]. Note: "Blood-brain barrier endothelial cell" refers to a *cell type*, not a single molecular therapeutic target such as an enzyme or receptor. Therefore, *is_target* should be **false**, *is_incorrect* should be **true** for use as a canonical druggable target name. For structured data extraction purposes—specific molecules expressed on/in these cells (such as P-glycoprotein [ABCB1], GLUT1 [SLC2A1], claudin family members) would be appropriate targets rather than referring generically to "blood-brain barrier endothelial cell"[2][3].

Other names

brain microvascular endothelial cellBBB endothelial cellBMEC