ABSTRACT
@# Objective:To explore the prognostic significance of thrombospondin 2 (THBS2) expression and its effects on the proliferation and migration of pancreatic cancerASPC-1 cells for patients with pancreatic cancer, and to investigate its possible molecular mechanism. Methods: The expression of THBS2 in pancreatic cancer tissues and its effects on overall survival rate in patients were analyzed by online database. THBS2 expression in pancreatic cancerASPC-1 cells was detected by Western Blotting; RNAinterference was used to knockdown the expression of THBS2 inASPC-1 cells, and then the effects of THBS2 knockdown on cell proliferation and migration were detected by MTT and Transwell assays, while its effects on protein expression levels (MMP, E-cadherin,AKT and PI3K) were detected by Wb. Results: Expression of THBS2 in pancreatic cancer tissues was significantly higher than that in normal pancreatic tissues (P<0.01), and the high expression of THBS2 could lead to the decrease of overall survival rate in pancreatic cancer patients. The expression of THBS2 in pancreatic cancer cell lines was significantly up-regulated; however, after interference on the expression of THBS2, the proliferation (P<0.01) and migration ability (P<0.01) of ASPC-1 cells were significantly decreased, and the expression of AKT and PI3K in cells was significantly down-regulated (P<0.01). Conclusion: THBS2 is highly expressed in pancreatic cancer tissues and cells, and is negatively correlated with the prognosis of patients. The mechanism is possibly related with the proliferation and migration of ASPC-1 cells that regulated byAKT/PI3K signaling pathway.