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Hypoxia stimulates angiogenesis under a variety of pathological conditions, including malignant tumors by inducing expression of angiogenic factors such as VEGFA. Surprisingly, here we report significant association between down-regulation of a new angiogenic factor AGGF1 and high-grade urothelial carcinoma. The proportion of strong AGGF1 expression cases was significantly lower in the high-grade...
Prox1 encodes a homeobox transcription factor critical to organ development, but its regulation is poorly understood. Here, we show that Prox1 expression is induced by hypoxia, and controlled by a hypoxia-response element (HRE) at the Prox1 promoter/regulatory region and HIF-1α/HIF-2α. EMSA and ChIP assays demonstrated the direct interaction of the HRE with HIF-1α or HIF-2α. Overexpression of HIF-1α...
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