Abstract:
:Cellular adhesion to extracellular matrix is a central phenomenon for the maintenance of tissue integrity and cellular movement. Collectively, these processes are regulated by a fine-tuned balance between the formation and loosening of adhesive contacts, a process involving integrins, and the elevation and diminution of cytoplasmic signalling molecules. We demonstrate that prostaglandin (PG) F(2alpha) stimulation rapidly increases the capacity of Ishikawa cells stably expressing the F-prostanoid receptor (FPS) to adhere to vitronectin. Coincident with this elevation in matrix adhesion, we demonstrate a profound PGF(2alpha)-induced alteration in cytoskeletal remodelling, characterized by polymerization of the actin cytoskeleton and recruitment of focal adhesion kinase at focal adhesions and enhanced cell migration. Moreover, we show that these PGF(2alpha)-induced alterations in adhesion and morphology on vitronectin and migration could be abolished by cultivating FPS cells in the presence of integrin alphavbeta3 antibody or alphavbeta3-directed tetrapeptide arg-gly-asp-ser or inhibition of FP receptor signalling with the FP receptor antagonist, chemical disruptors of the phospholipase C-beta, protein kinase A, c-Src and epidermal growth factor receptor kinase pathways or inhibition of the monomeric G proteins Rho, Rac and CDC42. These results reveal a mechanism by which prostanoids regulate cell movement, which may be relevant to pathologies of the endometrium.
journal_name
Oncogenejournal_title
Oncogeneauthors
Sales KJ,Boddy SC,Jabbour HNdoi
10.1038/sj.onc.1210883subject
Has Abstractpub_date
2008-04-10 00:00:00pages
2466-77issue
17eissn
0950-9232issn
1476-5594pii
1210883journal_volume
27pub_type
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