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A novel bHLH-PAS factor with close sequence similarity to hypoxia-inducible factor 1α regulates the VEGF expression and is potentially involved in lung and vascular development

机译:一种新型的bHLH-PAS因子,其与缺氧诱导因子1α具有紧密的序列相似性,可调节VEGF的表达,并可能参与肺和血管的发育

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摘要

We have isolated and characterized a cDNA for a novel Per-Arnt/AhR-Sim basic helix-loop-helix (bHLH-PAS) factor that interacts with the Ah receptor nuclear translocator (Arnt), and its predicted amino acid sequence exhibits significant similarity to the hypoxia-inducible factor 1α (HIF1α) and Dro- sophila trachealess (dTrh) gene product. The HIF1-like factor (HLF) encoded by the isolated cDNA bound the hypoxia- response element (HRE) found in enhancers of genes for eryth- ropoietin, vascular endothelial growth factor (VEGF), and var- ious glycolytic enzymes, and activated transcription of a reporter gene harboring the HRE.
机译:我们已经分离并表征了与Ah受体核转运子(Arnt)相互作用的新型Per-Arnt / AhR-Sim基本螺旋-环-螺旋(bHLH-PAS)因子的cDNA,其预测的氨基酸序列显示出显着的相似性缺氧诱导因子1α(HIF1α)和果蝇无气管(dTrh)基因产物。由分离的cDNA编码的HIF1样因子(HLF)结合了在促红细胞生成素,血管内皮生长因子(VEGF)和各种糖酵解酶基因的增强子中发现的缺氧反应元件(HRE),并激活了转录带有HRE的报告基因的基因

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