Abstract:
:A truncated form of 24kDa FGF-2 consisting of 86 NH(2)-terminal amino acids (ATE+31) inhibits cell migration in vitro and tumor development and angiogenesis in vivo. Focal adhesion kinase (FAK) is phosphorylated on tyrosine and serine sites after cell stimulation by growth factors. This study examined the effect of ATE+31 on FAK phosphorylation in human glioma cells. FAK and Pyk phosphorylation were evaluated at serines known to be involved with cell migration. We demonstrated that ATE+31 at 3 x 10(-11)M decreases phosphorylation levels of Tyr(407)-FAK and Ser(732)-FAK in the presence of platelet-derived growth factor (PDGF), that ATE+31 in the presence of PDGF alters the distribution of FAK and other phosphotyrosine proteins in the adhesion contacts, and that ATE+31 in the presence of PDGF has no effect on the activation of Pyk2. These data suggest that the inhibition of cell migration by ATE+31 occurs via Tyr(407)-FAK and Ser(732)-FAK.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Lin AH,Eliceiri BP,Levin EGdoi
10.1016/j.bbrc.2009.03.084subject
Has Abstractpub_date
2009-05-08 00:00:00pages
503-7issue
3eissn
0006-291Xissn
1090-2104pii
S0006-291X(09)00485-9journal_volume
382pub_type
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