The pathological superoxidative condition that retinal pigment epithelium (RPE) cells experience contributed to the advancement of age-related macular degeneration (AMD), which was accompanied by significant neovascularization. Therefore, the discovery of novel pharmacological candidates to ameliorate oxidative damage (H2O2) against RPE cells and inhibit the following angiogenesis simultaneousl...

Tumor cells can be induced to differentiate in vitro by biochemical manipulation of their culture environment. In the studies described here, the effects of medium conditioned by human retinal pigmented epithelial (RPE) cells on Y79 human retinoblastoma cells have been examined. RPE-conditioned medium in conjunction with laminin and a poly-D-lysine substratum is observed to induce neuronal diff...

Stem cell strategies focused on replacement of RPE cells for the treatment of geographic atrophy are under intense investigation. Although the eye has long been considered immune privileged, there is limited information about the immune response to transplanted cells in the subretinal space of large animals. The purpose of this study was to evaluate the survival of allogenic induced pluripotent...

Age-related macular degeneration (AMD) is one of the major causes of blindness in aging population that progresses with death of retinal pigment epithelium (RPE) and photoreceptor degeneration inducing impairment of central vision. Discovery of human induced pluripotent stem (hiPS) cells has opened new avenues for the treatment of degenerative diseases using patient-specific stem cells to gener...

The retinal pigment epithelium (RPE) is a monolayer of highly specialized cells that help maintain the chemical composition of its surrounding subretinal and choroidal extracellular spaces. Retinal cells (photoreceptors in particular), RPE, and choroidal endothelial cells together help ensure a homeostatically stable metabolic environment with exquisitely sensitive functional responses to light...

During the course of proliferative vitreoretinopathy (PVR), the retinal pigment epithelium (RPE) cells will de-differentiate, proliferate, and migrate onto the surfaces of the sensory retina. Several studies have shown that platelet-derived growth factor (PDGF) can induce migration of RPE cells via an Akt-related pathway. In this study, the effect of lutein on PDGF-BB-induced RPE cells migratio...

The retinal pigment epithelium (RPE) plays a critical role in the maintenance of the outer retina. RPE cell death or dysfunction drives the pathophysiology of many retinal diseases, but the physiological response of the retina to RPE cell loss is poorly understood, mainly because of the absence of suitable experimental models. Here, we generated a transgenic mouse in which an inducible Cre reco...

Cultured human retinal pigmented epithelium (RPE) synthesized and secreted glycosaminoglycans (GAGs) with the characteristics of chondroitin sulfate, dermatan sulfate, and hyaluronic acid from radioactive precursors. Cells subcultured for up to 18 passages from normal RPE and from the RPE of a patient with X-linked retinitis pigmentosa synthesized and secreted the same types and proportions of ...

PURPOSE Retinal pigment epithelial (RPE) cells are capable of differentiating into retinal neurons when induced by the appropriate growth factors. Amniotic fluid contains a variety of growth factors that are crucial for the development of a fetus. In this study, the effects of human amniotic fluid (HAF) on primary RPE cell cultures were evaluated. METHODS RPE cells were isolated from the glob...

In cells of the teleost retinal pigment epithelium (RPE), melanin granules disperse into the RPE cell's long apical projections in response to light onset, and aggregate toward the base of the RPE cell in response to dark onset. The RPE cells possess numerous microtubules, which in the apical projections are aligned longitudinally. Nocodazole studies have shown that pigment granule aggregation ...