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Breaking down EMT

Epithelial–mesenchymal transition, in which epithelial cells lose their polarity and become motile mesenchymal cells, occurs during development and marks a key step in tumour progression towards metastasis. Most studies of this process have focused on the disassembly of adherens junctions, but regulation of basement membrane breakdown by a pathway involving RhoA and microtubules may be equally important.

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Figure 1: EMT comprises up to five steps: 1) EMT specification.
Figure 2: BM breakdown is a key step in EMT of chick epiblast cells.

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Levayer, R., Lecuit, T. Breaking down EMT. Nat Cell Biol 10, 757–759 (2008). https://doi.org/10.1038/ncb0708-757

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