Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
2049509 | FEBS Letters | 2009 | 6 Pages |
Stabilin-2 was recently shown to mediate a heterophilic interaction with integrin alphaMbeta2 via its FAS1 domain. Here, we demonstrate that stabilin-2 also mediates homophilic cell–cell interactions. L cells expressing stabilin-2 mediate a significant level of cell aggregation, and this aggregation is significantly inhibited by anti-stabilin-2 antibody. Stabilin-2-mediated aggregation is mediated by homophilic interactions and enhanced in the presence of Ca2+ and Mg2+. Interestingly, exogenous addition of FAS1 domains but not EGF-like domains enhances stabilin-2-mediated cell aggregation, suggesting that exogenous FAS1 domains may form polymeric structure with FAS1 domains of stabilin-2. Together, these data show the participation of stabilin-2 in homophilic cell adhesion and role of FAS1 domains.