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A gene regulatory network to control EMT programs in development and disease
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Journal Article
A gene regulatory network to control EMT programs in development and disease
2019
Overview
The Epithelial to Mesenchymal Transition (EMT) regulates cell plasticity during embryonic development and in disease. It is dynamically orchestrated by transcription factors (EMT-TFs), including Snail, Zeb, Twist and Prrx, all activated by TGF-β among other signals. Here we find that Snail1 and Prrx1, which respectively associate with gain or loss of stem-like properties and with bad or good prognosis in cancer patients, are expressed in complementary patterns during vertebrate development and in cancer. We show that this complementarity is established through a feedback loop in which Snail1 directly represses
Prrx1
, and Prrx1, through direct activation of the miR-15 family, attenuates the expression of Snail1. We also describe how this gene regulatory network can establish a hierarchical temporal expression of Snail1 and Prrx1 during EMT and validate its existence in vitro and in vivo, providing a mechanism to switch and select different EMT programs with important implications in development and disease.
EMT is a developmental process that is aberrantly activated in metastasizing cancer cells, but how multiple transcription factors regulate EMT is unclear. Here, the authors uncover a gene regulatory network between Prrx1 and Snail1 that selects EMT mode in developing vertebrates and cancer cells.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
Subject
/ 14
/ 38
/ 45
/ 45/15
/ 45/77
/ 45/90
/ 631/136
/ 631/67
/ 631/80
/ 64/110
/ 64/116
/ 64/60
/ Animals
/ Cancer
/ Embryos
/ Epithelial-Mesenchymal Transition - genetics
/ Genetic Predisposition to Disease
/ Humanities and Social Sciences
/ Humans
/ Science
