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  • Title: Forkhead box protein O1 mediates apoptosis in a cancer cervical cell line treated with the antitumor agent tumor necrosis factor-α.
    Author: Zhang B, Gui L, Zhu L, Zhao X, Yang Y, Li Q.
    Journal: Genet Mol Res; 2015 Jul 06; 14(3):7446-54. PubMed ID: 26214423.
    Abstract:
    Tumor necrosis factor-α (TNF-α) is an important pro-apoptotic cytokine, which performs a broad range of immune and inflammatory functions in several vital processes. TNF-α-induced apoptosis has been confirmed, however, relatively little is known regarding the role of forkhead box class-O 1 (FOXO1) in mediating TNF-α-induced apoptosis in cervical cancer. In our study, we used the well-characterized cervical cancer cell line C-33A to investigate the role of FOXO1. The results showed that the antitumor agent TNF-α increased the expression level of FOXO1 (P < 0.05) and enhanced its transcriptional activity (P < 0.05). Furthermore, knockdown of FOXO1 repressed TNF-α-induced apoptosis and caspase-3, 8, and 9 expressions (P < 0.05). Collectively, these findings suggest that TNF-α upregulated the transcriptional factor FOXO1, leading to an increased expression of apoptotic gene, which leads to an increase in apoptosis.
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