Periostin secreted by epithelial ovarian carcinoma is a ligand for alpha(V)beta(3) and alpha(V)beta(5) integrins and promotes cell motility - PubMed (original) (raw)

. 2002 Sep 15;62(18):5358-64.

Affiliations

PMID: 12235007

Periostin secreted by epithelial ovarian carcinoma is a ligand for alpha(V)beta(3) and alpha(V)beta(5) integrins and promotes cell motility

Lindsay Gillan et al. Cancer Res. 2002.

Abstract

Periostin (PN) is a secreted protein that shares a structural homology to the axon guidance protein fasciclin I in insects. Previously, we reported that PN expression is up-regulated in epithelial ovarian tumors. We further examined the role of PN in ovarian cancer. PN is expressed in several normal tissues but not in normal ovaries and has a tendency for higher expression in fetal tissues. Ovarian cancer cells secrete PN, which can accumulate in malignant ascites of ovarian cancer patients. Purified recombinant PN supports adhesion of ovarian epithelial cells that can be inhibited by monoclonal antibodies against alpha(V)beta(3) or alpha(V)beta(5) integrin, but not by anti-beta(1) integrin antibody. Furthermore, alpha(V)beta(3) integrin, but not beta(1) integrins, colocalizes to the focal adhesion plaques formed on PN. Cells plated on PN form fewer stress fibers and are more motile compared with those plated on fibronectin. We propose PN functions as a ligand for alpha(V)beta(3) and alpha(V)beta(5) integrins to support adhesion and migration of ovarian epithelial cells.

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Periostin secreted by epithelial ovarian carcinoma is a ligand for alpha(V)beta(3) and alpha(V)beta(5) integrins and promotes cell motility - PubMed (original) (raw)