Abstract
The Wnt planar cell polarity (PCP) pathway is one of the Wnt pathways which plays a critical role in cell proliferation and fate. The VANGL1 protein is one of Wnt-PCP pathway components. It is known that Wnt-PCP pathway has major roles in cell motility but its role in hepatocellular carcinoma (HCC) progression through invasion and metastasis needs to be clarified. We silenced VANGL1 gene expression in the HepG2 HCC cell line by stable transfection with a vector containing siRNA template for VANGL1 and investigated the change in cell invasion and motility. Transfected cells with the siRNA template showed significantly suppressed invasive capacity when compared to controls although cellular motility was only slightly affected. Our study showed a basal role for VANGL1 with respect to the invasive capacity of HCC cells. This suggests that the Wnt-PCP pathway may play a role in progression of HCC through cellular invasion but further studies are needed to clarify its role in cell motility.
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