Author: Gamulescu Maria-Andreea Seifert Kerstin Tingart Markus Falet Hervé Hoffmeister Karin M.
Publisher: Informa Healthcare
ISSN: 1369-1635
Source: Platelets, Vol.14, Iss.4, 2003-06, pp. : 211-217
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Abstract
Platelet activation results in formation of filopodia and cell spreading by extension of lamellae. Moesin is a member of the ezrin/radixin/moesin (ERM) family of proteins, which localize in cell extensions like filopodia and function as cross-linkers between the actin cytoskeleton and the plasma membrane. Here we investigated whether the adhesion molecule PECAM-1 (CD31) is a membrane-binding partner for moesin in platelets. Our data show that moesin co-immunoprecipitated with PECAM-1 in lysates from thrombin-stimulated, but not resting platelets. Furthermore, PECAM-1 co-localized with moesin at the cell periphery and in filopodia of glass-activated platelets. Our observations suggest that moesin may play a role in platelet adhesion, linking PECAM-1 with the actin cytoskeleton.
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