Effect of Wnt signaling protein (Wisp2/CCN5) on angiogenesis and invasion in prostate cancer.

227 Background: The Wnt-Induced Signaling Protein-2 (Wisp-2 /CCN5) is a secreted protein implicated in modification of extracellular matrix, invasion, and angiogenesis. The regulation of Wisp-2 and its function in CaP is poorly explored although it is highly expressed in advanced CaP cells. We discovered recently that a pro-inflammatory chemokine, Interleukin-8 (IL-8) strongly modulates Wisp2 expression in CaP cells. Since IL-8 is a major effecter of inflammatory pathway, we investigated the physiological consequence of Wisp-2 modulation in CaP cells. We hypothesised that Wisp-2 is a down-stream effector of IL-8 induced angiogenesis and invasion. Methods: Quantitative PCR (qPCR) was used to determine the expression of Wisp-2 mRNA and other mRNA in prostate epithelial and cancer cells. Wisp-2 mediated-VEGF secretion was determined by ELISA and endothelial tube formation assay using human vascular endothelial cells (HUVEC). Invasive activity and their attributes were determined using gelatin-zymography for ...