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FoxM1 Regulates Proliferation and Apoptosis of Human Neuroblastoma Cell through PI3K/AKT Pathway
Junzuo Liao1, Lin Jiang2, Cheng Wang1
1Affiliated Hospital of North Sichuan Medical College, Nanchong, China.
Abstract:
Aim: This study investigated the effect of FoxM1 on the biological behavior of neuroblastoma (NB) cells in vitro and the association between FoxM1 and PI3K/AKT pathways in NB cell lines. Materials and methods: Recombinant plasmid pcDNA3.1 (+)-FoxM1 and FoxM1-specific small interfering RNA (siRNA) were transfected into IMR-32 cells by liposome transfection. The expression of FoxM1, AKT and PI3K were determined by qRT-PCR and western blotting. The effect of FoxM1 and PI3K/AKT pathways on the cell cycles and apoptosis were analyzed by flow cytometry. Cell viability and proliferation ability were assessed by CCK8 and colony formation assay. Results: Knockdown of FoxM1 promoted NB cell apoptosis and G1-phase cell cycle arrest significantly, increased the expression of apoptosis-related proteins, and suppressed the phospho-activation of PI3K and AKT. Over-expression of FoxM1 had the opposite effects. Conclusion: FoxM1 knockdown inhibited NB cell proliferation and induced apoptosis through inhibiting activation of PI3K and AKT.
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