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Synergistic Anti-Cancer Effects of AKT and SRC Inhibition in Human Pancreatic Cancer Cells
안강,오영문,지영건,조한준,이동현 연세대학교의과대학 2018 Yonsei medical journal Vol.59 No.6
Purpose: To investigate the effect of combined inhibition of protein kinase B (AKT) and SRC on the growth and metastatic potentialof human pancreatic cancer cells. Materials and Methods: AKT and SRC were inhibited using 10-DEBC and PP2, respectively. The expression of their messengerRNAs were down-regulated by specific small interfering RNA (siRNA). Changes in pancreatic cancer cell growth and metastaticpotential were determined using a cell viability assay and a xenotransplant model of pancreatic cancer, as well as cell migrationand invasion assays. Signal proteins were analyzed by Western blot. Results: The inhibitors 10-DEBC and PP2 suppressed cell proliferation in a dose-dependent fashion in pancreatic cancer celllines MIA PaCa-2 and PANC-1. The simultaneous inhibition of AKT and SRC at low concentrations resulted in a significant suppressionof cell proliferation. Knockdown of AKT2 and SRC using siRNAs also significantly decreased cell proliferation. In a pancreaticcancer model, combined treatment with 10-DEBC and PP2 also significantly suppressed the growth of pancreatic cancer. Application of 10-DEBC with PP2 significantly reduced the metastatic potential of pancreatic cancer cells by inhibiting migrationand invasion. The combined inhibition suppressed the phosphorylation of mTOR and ERK in pancreatic cancer cells. Conclusion: Combined targeting of AKT and SRC resulted in a synergistic efficacy against human pancreatic cancer growth andmetastasis.