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Progress on hypoxia-inducible factor-3: Its structure, gene regulation and biological function (Review)

机译:缺氧诱导因子3的研究进展:其结构,基因调控和生物学功能(综述)

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摘要

Hypoxia inducible factors (HIFs) are transcription factors, which are commonly expressed in mammals, including humans. The HIFs consist of hypoxia-regulated a and oxygen-insensitive beta subunits, and are key regulators of gene expression during hypoxia in normal and solid tumor tissues. Three members of the HIF family, HIF-1 alpha, HIF-2 alpha, and HIF-3 alpha, are currently known. HIF-3 alpha differs from HIF-1 alpha and HIF-2 alpha in protein structure and regulation of gene expression. For a long time, HIF-3 alpha was considered as a negative mediator of HIF-regulated genes. HIF-3 has a transcriptional regulatory function, which negatively affects gene expression by competing with HIF-1 alpha and HIF-2 alpha in binding to transcriptional elements in target genes during hypoxia. Previously, certain target genes of HIF-3 alpha have been identified, confirming the role of HIF-3 alpha as a transcription factor. In this review, the protein structure, gene regulation and biological function of HIF-3 are discussed based on the literature.
机译:缺氧诱导因子(HIFs)是转录因子,通常在包括人在内的哺乳动物中表达。 HIF由缺氧调节的α和氧敏感性β亚基组成,并且是正常和实体肿瘤组织缺氧期间基因表达的关键调节剂。目前已知HIF家族的三个成员,即HIF-1 alpha,HIF-2 alpha和HIF-3 alpha。 HIF-3 alpha在蛋白质结构和基因表达调控方面不同于HIF-1 alpha和HIF-2 alpha。长期以来,HIF-3 alpha被认为是HIF调控基因的负介体。 HIF-3具有转录调节功能,在缺氧期间通过与HIF-1 alpha和HIF-2 alpha竞争结合靶基因中的转录元件而对基因表达产生负面影响。以前,已经确定了HIF-3 alpha的某些靶基因,证实了HIF-3 alpha作为转录因子的作用。本文综述了HIF-3的蛋白结构,基因调控和生物学功能。

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