Retinal pigment epithelium cell proliferation (RPE cell proliferation)

Retinal pigment epithelium (RPE) cell proliferation is a biological process involving the division and multiplication of RPE cells, which are typically quiescent in the healthy adult eye (Source: NIH/NEI). While RPE cells are vital for maintaining photoreceptor function and the blood-retinal barrier, they can re-enter the cell cycle in response to pathological stimuli such as retinal detachment, trauma, or inflammation (Source: PubMed, PMID: 31254588). This proliferation is a central component of Proliferative Vitreoretinopathy (PVR), where RPE cells undergo epithelial-mesenchymal transition (EMT) and form contractile membranes that can lead to tractional retinal detachment and permanent vision loss (Source: StatPearls). Therapeutic interventions often target this process using antiproliferative drugs like 5-fluorouracil or daunorubicin, or by inhibiting upstream signaling molecules like VEGF and TGF-beta (Source: American Academy of Ophthalmology). Because it is a complex cellular behavior rather than a single protein, it is considered a phenotypic process or pathological outcome rather than a discrete molecular target like a receptor or enzyme.

Other names

RPE proliferationRetinal pigment epithelial cell proliferationRPE hyperplasiaRPE cell growth

Inhibition of DNA synthesis, suppression of inflammatory cytokines, and antagonism of growth factor signaling pathways (e.g., VEGF, PDGF, TGF-beta) to arrest the cell cycle in RPE cells.