Retinal Pigment Epithelium (Rpe) Expanded is an important cell type in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
Retinal Pigment Epithelium (Rpe) Expanded is an important cell type in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
Overview
Mermaid diagram (expand to render)
The Retinal Pigment Epithelium (RPE) is a single layer of hexagonal cells located between the photoreceptor layer and the choroid in the retina. RPE cells are essential for maintaining photoreceptor function and survival, and their dysfunction is central to age-related macular degeneration (AMD) and other retinal degenerative diseases. [@strauss2005]
Cellular Characteristics
Morphology
Shape: Cuboidal to columnar hexagonal cells
Size: 10-15 μm diameter
Junctions: Tight junctions forming the outer blood-retinal barrier
ER stress: Protein misfolding, [UPR](/entities/unfolded-protein-response) activation
Biomarker Potential
RPE-derived biomarkers for neurodegenerative diseases: [@cheung2020]
Aβ40, Aβ42 in tears/aqueous humor
Tau protein levels
VEGF and anti-VEGF therapy response
RPE-specific miRNAs
Background
The study of Retinal Pigment Epithelium (Rpe) Expanded has evolved significantly over the past decades. Research in this area has revealed important insights into the underlying mechanisms of neurodegeneration and continues to drive therapeutic development.
Historical context and key discoveries in this field have shaped our current understanding and will continue to guide future research directions.