Cellular membranes and subcellular structures in abnormal choroidal vasculature

Cellular membranes and subcellular structures in abnormal choroidal vasculature refers to the pathological vascular network formed during choroidal neovascularization (CNV), a hallmark of exudative age-related macular degeneration (AMD) (Source: FDA Visudyne Label). This target is not a single protein but a structural entity where photosensitizing drugs, such as verteporfin, preferentially accumulate due to the high metabolic activity and LDL receptor expression of neovascular endothelial cells (Source: StatPearls, Photodynamic Therapy). Upon activation by non-thermal laser light, these drugs generate singlet oxygen and other reactive oxygen species (ROS) that cause localized damage to the cellular membranes and subcellular organelles like mitochondria and lysosomes (Source: PubMed, PMID: 11063271). This damage leads to platelet aggregation, fibrin clot formation, and the eventual occlusion of the abnormal vessels, thereby reducing fluid leakage and preserving vision (Source: NIH, National Eye Institute). Because it describes a morphological site rather than a specific molecule, it is often categorized as a structural target in the context of photodynamic therapy. The specificity of this target is achieved through the selective uptake of the drug by rapidly dividing cells and the precise application of laser light to the affected area of the retina.

Other names

Choroidal neovascularizationCNVSubretinal neovascular membraneNeovascular endothelium

Photodynamic therapy (PDT) involving the generation of reactive oxygen species upon light activation, leading to local vascular occlusion.