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- W2887793825 abstract "Endothelial cell apoptosis induced by hypoxia is implicated in the pathogenesis of vascular diseases. However, the underlying mechanism is not clearly elucidated. In this study, we found that hypoxia increased Mxi1-0 expression, and the Mxi1-0 siRNA could inhibit caspase-8 activation and apoptosis in HUVECs induced by hypoxia. In addition, hypoxia induced FOXO3 activation, while Mxi1-0 expression and apoptosis were inhibited by transfection with FOXO3 siRNA. Using ChIP assay, we confirmed that FOXO3a binds to the Mxi1-0 promoter region. Furthermore, hypoxia treatment leads to remarkable production of reactive oxygen species (ROS), while ROS scavenger N-acetyl-L-cysteine (NAC) inhibits hypoxia-induced ROS production, apoptosis and FOXO3a-mediated Mxi1-0 up-regulation. Finally, we found that the HIF-1α siRNA inhibited hypoxia-induced HIF-1α expression and ROS production, as well as FOXO3a/Mxi1-0 activation and apoptosis in HUVECs. Taken together, this study identifies a HIF-1α/FOXO3a/Mxi1-0/caspase-8 signaling pathway in hypoxia-induced endothelial cell apoptosis. These data also indicate that HIF-1α-dependent ROS production is required for FOXO3a-mediated Mxi1-0 up-regulation and apoptosis in hypoxic endothelial cells." @default.
- W2887793825 created "2018-08-22" @default.
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- W2887793825 date "2018-11-01" @default.
- W2887793825 modified "2023-09-26" @default.
- W2887793825 title "FOXO3a-dependent up-regulation of Mxi1-0 promotes hypoxia-induced apoptosis in endothelial cells" @default.
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- W2887793825 doi "https://doi.org/10.1016/j.cellsig.2018.08.009" @default.
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