Ovarian Cancer Immuno Reactive Antigen Domain Containing Protein 1 (OCIAD1)

OCIAD1 over-expression in HEY ovarian cancer cells increased LPA-induced, but not basal level cell adhesion to extracellular matrix proteins collagen I and laminin 10/11. OCIAD1 does not use PKC and PI3K signaling pathways to exert its effect on adhesion. In addition, LPA induced cell adhesion to collagen I was unaffected by paclitaxel (5 microM) in OCIAD1 overexpressing cells. OCIAD1 is over-expressed in metastatic ovarian cancer tissues. The effect of OCIAD1 on cell adhesion may be related to its function in ovarian cancer. Failure of paclitaxel to affect ovarian cancer cell adhesion in presence of OCIAD1 raises the possibility of OCIAD1's role in tumor metastasis. Using a mouse orthotopic LPA-dependent ovarian cancer metastasis model are focused on strategies to inhibit the potential role of OCIAD1 in tumor metastasis.