Abstract
Background and aimForkhead box protein O4 (FOXO4) is a transcription factor, and aberrant FOXO4 expression is associated with development of various human cancers. This study explored the role of FOXO4 in glioma in vitro and in vivo. MethodsFOXO4 expression was first assessed in normal brain tissues, low-grade glioma, glioblastoma multiforme (GBM), normal human astrocytes (HA), and GBM cell lines, while manipulation of FOXO4 expression in glioma cell lines was assessed using qRT-PCR, Western blot, and cell viability CCK-8, Transwell, and a nude mouse subcutaneous xenograft assays. Key findingsThe data showed downregulated FOXO4 expression in GBM tissues and cell lines. FOXO4 overexpression induced by transfection with FOXO4 cDNA significantly inhibited GBM cell proliferation, migration, and invasion, but increased tumor cells to undergo apoptosis in vitro, while suppressed growth of GBM cell subcutaneous xenografts in nude mice. In conclusion, FOXO4 possesses an anti-cancer glioma activity, which could be a novel target for future control of GBM.
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