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

PloS one (2015-06-30)
Parul Choudhary, Benjamin Thomas Dodsworth, Ben Sidders, Alex Gutteridge, Christos Michaelides, Joshua Kane Duckworth, Paul John Whiting, Caroline Louise Benn

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 phenotype in a FOXM1 dependent manner. We show that FOXM1 directly regulates proliferation of RPE through transcriptional control of cell cycle associated genes. Additionally, FOXM1 modulates expression of the signaling ligands BMP7 and Wnt5B which act reciprocally to enable epithelialization. This data uncovers a novel effect of FOXM1 dependent activities in contributing towards epithelial fate acquisition and furthers our understanding of the molecular regulators of a cell type that is currently being evaluated as a cell therapy.

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Anti-Actin, α-Smooth Muscle antibody, Mouse monoclonal, clone 1A4, purified from hybridoma cell culture
MISSION® esiRNA, targeting human SPARC
MISSION® esiRNA, targeting mouse Sparc

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