Cadherins are transmembrane glycoproteins involved in cell-cell adherence. Recent developments indicate that classical cadherins may act as adherence-activated signaling receptors. Here, we review recent data from the literature concerning the role of classical cadherins in the control of cell survival and the signaling pathways involved. We focus on the fate and the role of E-cadherin, the main classical cadherin expressed in epithelial cells, in the cell death program triggered in enterocytes by loss of anchorage from the extracellular matrix (anoikis). These data open new perspectives on the key role of this protein, which is dysregulated in most carcinoma and is considered as a tumour-suppressor.
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