| First Author | Franco DL | Year | 2010 |
| Journal | J Cell Sci | Volume | 123 |
| Issue | Pt 20 | Pages | 3467-77 |
| PubMed ID | 20930141 | Mgi Jnum | J:182930 |
| Mgi Id | MGI:5317093 | Doi | 10.1242/jcs.068692 |
| Citation | Franco DL, et al. (2010) Snail1 suppresses TGF-beta-induced apoptosis and is sufficient to trigger EMT in hepatocytes. J Cell Sci 123(Pt 20):3467-77 |
| abstractText | Although TGF-beta suppresses early stages of tumour development, it later contributes to tumour progression when cells become resistant to its suppressive effects. In addition to circumventing TGF-beta-induced growth arrest and apoptosis, malignant tumour cells become capable of undergoing epithelial-to-mesenchymal transition (EMT), favouring invasion and metastasis. Therefore, defining the mechanisms that allow cancer cells to escape from the suppressive effects of TGF-beta is fundamental to understand tumour progression and to design specific therapies. Here, we have examined the role of Snail1 as a suppressor of TGF-beta-induced apoptosis in murine non-transformed hepatocytes, rat and human hepatocarcinoma cell lines and transgenic mice. We show that Snail1 confers resistance to TGF-beta-induced cell death and that it is sufficient to induce EMT in adult hepatocytes, cells otherwise refractory to this transition upon exposure to TGF-beta. Furthermore, we show that Snail1 silencing prevents EMT and restores the cell death response induced by TGF-beta. As Snail1 is a known target of TGF-beta signalling, our data indicate that Snail1 might transduce the tumour-promoting effects of TGF-beta, namely the EMT concomitant with the resistance to cell death. |
