Dataset Information


Characterization of hES derived Retinal Pigment Epithelial (RPE). RPE proliferation involves a non-classical Epithelial-Mesenchymal Transition (EMT).

ABSTRACT: Retinal Pigment Epithelial (RPE) cells are located behind the retina and are critical for photoreceptor survival. Loss of RPE is associated with several pathogenic conditions such as Age Related Macular Degeneration and Retinitis Pigmentosa. RPE derived from human embryonic stem cells (hESC) offer a potential source for producing these cells for therapy. Here we report the molecular and cellular characterization of RPE differentiated from hESC. hESC derived RPE are capable of proliferation and lose their epithelial characteristics before becoming confluent and re-differentiating back into their typical pigmented, cobblestoned appearance. During the proliferative phase, they adopt a mesenchymal morphology and express mesenchymal markers. Our results demonstrate that this apparent Epithelial-Mesenchymal Transition is not regulated by the classical EMT transcription factors SNAIL and SLUG. Furthermore, it is possible to regulate RPE de-differentiation and re-differentiation by modulating the Wnt and BMP pathway respectively. These findings further our understanding of the genesis and expansion of RPE which is essential for their therapeutic use.

ORGANISM(S): Homo sapiens  

SUBMITTER: Alex Gutteridge  

PROVIDER: E-MTAB-854 | ArrayExpress | 2012-10-24


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A FOXM1 Dependent Mesenchymal-Epithelial Transition in Retinal Pigment Epithelium Cells.

Choudhary Parul P   Dodsworth Benjamin Thomas BT   Sidders Ben B   Gutteridge Alex A   Michaelides Christos C   Duckworth Joshua Kane JK   Whiting Paul John PJ   Benn Caroline Louise CL  

PloS one 20150629 6

The integrity of the epithelium is maintained by a complex but regulated interplay of processes that allow conversion of a proliferative state into a stably differentiated state. In this study, using human embryonic stem cell (hESC) derived Retinal Pigment Epithelium (RPE) cells as a model; we have investigated the molecular mechanisms that affect attainment of the epithelial phenotype. We demonstrate that RPE undergo a Mesenchymal-Epithelial Transition in culture before acquiring an epithelial  ...[more]

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