|
||
Original Article |
Correspondence to: Shasta L. Sabo, Center for Neuroscience, University of California at Davis, 1544 Newton Ct., Davis, CA 95616. Tel:(530) 754-6990 Fax:(530) 757-8827 E-mail:slsabo{at}ucdavis.edu.
FE65 binds to the Alzheimer amyloid precursor protein (APP), but the function of this interaction has not been identified. Here, we report that APP and FE65 are involved in regulation of cell movement. APP and FE65 colocalize with actin and Mena, an Abl-associated signaling protein thought to regulate actin dynamics, in lamellipodia. APP and FE65 specifically concentrate with ß1-integrin in dynamic adhesion sites known as focal complexes, but not in more static adhesion sites known as focal adhesions. Overexpression of APP accelerates cell migration in an MDCK cell woundhealing assay. Coexpression of APP and FE65 dramatically enhances the effect of APP on cell movement, probably by regulating the amount of APP at the cell surface. These data are consistent with a role for FE65 and APP, possibly in a Mena-containing macromolecular complex, in regulation of actin-based motility.
Key Words: amyloid precursor protein, FE65, Mena, cell movement, adhesion
This article has been cited by other articles:
|
|