alexa HIF-1: master and commander of the hypoxic world. A pharmacological approach to its regulation by siRNAs.
Oncology

Oncology

Journal of Cancer Science & Therapy

Author(s): Mazure NM, BrahimiHorn MC, Berta MA, Benizri E, Bilton RL,

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Abstract The hypoxia-inducible factor-1 (HIF-1) is primarily involved in the sensing and adapting of cells to changes in the O2 level, which is essential for their viability. It is important that this critical transcription factor be tightly regulated in order for cells to respond to a wide range of O2 concentrations. HIF-1 regulation by post-translational modification is the central theme of the scenario of O2 homeostasis. The alpha subunit of HIF-1 is the principal actor while the supporting actors (PHDs, FIH-1, ARD1, CITED2, p300...) all contribute to the complexity of the grand finale. It is well established that HIF-1 expression and activation correlates with tumor progression and resistance to cancer treatments. We will introduce the different actors involved in HIF-1 regulation, and their mechanisms of action via invalidation by siRNAs and discuss therapies targeting HIF-1, to selectively kill tumor cells that adapt to low O2 concentrations. This article was published in Biochem Pharmacol and referenced in Journal of Cancer Science & Therapy

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