Brain Endothelial Cells In Neurodegeneration is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
Brain Endothelial Cells form the structural and functional basis of the blood-brain barrier (BBB), and their dysfunction is increasingly recognized as an important contributor to neurodegenerative diseases. BBB breakdown precedes or accompanies cognitive decline in Alzheimer's disease, Parkinson's disease, and other conditions.
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| Taxonomy |
ID |
Name / Label |
| Cell Ontology (CL) |
CL:0000115 |
endothelial cell |
- Morphology: cerebral cortex glial cell (source: Cell Ontology)
- Morphology can be inferred from Cell Ontology classification
| Database |
ID |
Name |
Confidence |
| Cell Ontology |
CL:0000115 |
endothelial cell |
Medium |
| Cell Ontology |
CL:1001579 |
cerebral cortex glial cell |
Medium |
| Cell Ontology |
CL:2000044 |
brain microvascular endothelial cell |
Medium |
¶ BBB Structure and Function
- Claudin-5: Main seal protein
- Occludin: Junctional adhesion
- JAM proteins: Junctional adhesion molecules
- ZO-1: Cytoplasmic scaffolding
- Glucose transporters: GLUT1 (SLCA2A1)
- Amino acid transporters: LAT1, system L
- Ion pumps: Na+/K+ ATPase
- Efflux pumps: P-glycoprotein (ABCB1)
- Early BBB breakdown: In APOE4 carriers
- Pericyte loss: Reduced PDGFR-β
- GLUT1 reduction: Impaired glucose uptake
- Leakage: Serum protein extravasation
- Microhemorrhages: Amyloid-related
- SNc vulnerability: High vascular density
- BBB permeability: Increased leakage
- Pericyte abnormalities: Structural changes
- White matter changes: Periventricular
- Endothelial degeneration: Early event
- BBB breakdown: Motor cortex
- Perivascular inflammation: Surrounding vessels
- Therapeutic delivery: Implications
- Critical for BBB: Development and maintenance
- PDGFR-β signaling: Essential
- Aβ accumulation: Pericyte internalization
- Neurovascular coupling: Impaired
- AQP4 dysregulation: Glymphatic dysfunction
- K+ buffering: Impaired homeostasis
- VEGF dysregulation: Angiogenic changes
- Aβ clearance: Reduced
| Protein |
Change in AD |
| Claudin-5 |
Downregulated |
| Occludin |
Fragmented |
| ZO-1 |
Disrupted |
- GLUT1: Reduced 40-60%
- P-gp: Impaired efflux
- LAT1: Variable changes
- Pericyte survival: PDGF-BB
- Tight junction stabilization: Glucocorticoids
- Antioxidants: Reduce oxidative stress
- Focused ultrasound: Temporary opening
- Nanoparticles: Targeted delivery
- Receptor-mediated transport: Engineering
- Angiogenesis factors: VEGF therapy
- Stem cells: Endothelial progenitors
- Exercise: Endothelial health
- [Cell Types Indexcell-types)
- [Brain Regions Indexbrain-regions)
](/brain-regions/brain-regions-indexbrain-regions))##