alexa Transcriptional regulation of cell polarity in EMT and cancer.
Reproductive Medicine

Reproductive Medicine

Gynecology & Obstetrics

Author(s): MorenoBueno G, Portillo F, Cano A

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The epithelial-to-mesenchymal transition (EMT) is a crucial process in tumour progression providing tumour cells with the ability to escape from the primary tumour, to migrate to distant regions and to invade tissues. EMT requires a loss of cell-cell adhesion and apical-basal polarity, as well as the acquisition of a fibroblastoid motile phenotype. Several transcription factors have emerged in recent years that induce EMT, with important implications for tumour progression. However, their effects on cell polarity remain unclear. Here, we have re-examined the data available related to the effect of EMT related transcription factors on epithelial cell plasticity, focusing on their impact on cell polarity. Transcriptional and post-transcriptional regulatory mechanisms mediated by several inducers of EMT, in particular the ZEB and Snail factors, downregulate the expression and/or functional organization of core polarity complexes. We also summarize data on the expression of cell polarity genes in human tumours and analyse genetic interactions that highlight the existence of complex regulatory networks converging on the regulation of cell polarity by EMT inducers in human breast carcinomas. These recent observations provide new insights into the relationship between alterations in cell polarity components and EMT in cancer, opening new avenues for their potential use as therapeutic targets to prevent tumour progression.

This article was published in Oncogene. and referenced in Gynecology & Obstetrics

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