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• W2007051270 abstract "This study investigated the role of LOX in promoting invasion and metastasis of epithelial ovarian cancer in a hypoxic environment and its specific signal transduction pathway. Immunohistochemical detection of HIF-1α and LOX protein expression was performed on formalin-fixed paraffin sections of normal ovary, benign ovarian tumors, borderline and malignant epithelial ovarian tumor paraffin sample, using Mann-Whitney U test for independent comparisons and Wilcoxon signed-ranks test for paired comparisons. HIF-1α and LOX were knocked down in epithelial ovarian cancer cells (EOC), and HIF-1α/LOX regulation mechanism and LOX catalytic activity under hypoxia/reoxygenation microenvironment were explored. Cell migration and invasion ability in LOX inhibited HO8910 cells were investigated under hypoxia/reoxygenation conditions, using matrigel cell invasion and migration assays. We found that HIF-1α and LOX are highly expressed in epithelial ovarian cancer tissues, and the expression of both proteins is significantly correlated with the tumor grade, tumor diameter and lymph node metastasis. HIF-1α expression is positively correlated with the expression of LOX. Specifically, the expression of LOX and HIF-1α markedly increases under hypoxic conditions and decreases after reoxygenation. siRNA knockdown of LOX or β-aminoproprionitrile (βAPN), an inhibitor of LOX activity, that attenuates LOX activity, downregulates HIF-1α protein expression and inhibits HO8910 migratory and invasive abilities. LOX catalytic activity is significantly reduced under hypoxic conditions. Moreover, EOC cells display a marked increase in LOX-dependent FAK/AKT activation and cell migration following hypoxia/reoxygenation. Collectively, our study demonstrates that the hypoxia-HIF-1α, LOX-FAK/AKT pathway regulates the migration and invasion of epithelial ovarian cancer cells under hypoxia/reoxygenation conditions, thus, promoting metastasis of ovarian cancer." @default.
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• W2007051270 date "2013-03-29" @default.
• W2007051270 modified "2023-09-27" @default.
• W2007051270 title "Hypoxia inducible factor 1α-mediated LOX expression correlates with migration and invasion in epithelial ovarian cancer" @default.
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• W2007051270 doi "https://doi.org/10.3892/ijo.2013.1878" @default.
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