articleProceedings of the National Academy of SciencesOct 23, 2013BRONZE OA

MicroRNA-based regulation of epithelial–hybrid–mesenchymal fate determination

Center for Theoretical Biological Physics · Astronomy and Space · +2 more institutions

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Abstract

Forward and backward transitions between epithelial and mesenchymal phenotypes play crucial roles in embryonic development and tissue repair. Aberrantly regulated transitions are also a hallmark of cancer metastasis. The genetic network that regulates these transitions appears to allow for the existence of a hybrid phenotype (epithelial/mesenchymal). Hybrid cells are endowed with mixed epithelial and mesenchymal characteristics, enabling specialized capabilities such as collective cell migration. Cell-fate determination between the three phenotypes is in fact regulated by a circuit composed of two highly interconnected chimeric modules--the miR-34/SNAIL and the miR-200/ZEB mutual-inhibition feedback circuits.…

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