cell-cell adhesion

Cell-cell adhesion involve transmembrane glycoproteins such as cell adhesion molecules and integrins, which are thought to function via interactions of their cytoplasmic domains with proteins associated with the cytoskeleton (as vinculin or talins).

Cadherin-mediated cell-cell junctions

The formation of cadherin-mediated cell-cell junctions is accompanied by a profound remodeling of the actin cytoskeleton.

The Arp2/3 complex and its activator cortactin drive the assembly of branching actin-filament arrays, and formin-1 promotes the nucleation of non-branching actin filaments.

Recruitment of these actin nucleators to nascent adhesions, formation of the links between them and the cytoplasmic cadherin domain, and triggering of their actin-polymerizing functions are vital steps in the development of cell-cell junctions.

See also:

 actin polymerization
 cadherin junctions

References

 Bershadsky A. Magic touch: how does cell-cell adhesion trigger actin assembly? Trends Cell Biol. 2004 Nov;14(11):589-93. PMID: 15519846