HIF-1 regulation: not so easy come, easy go

Trends Biochem Sci. 2008 Nov;33(11):526-34. doi: 10.1016/j.tibs.2008.08.002. Epub 2008 Sep 21.

Abstract

The hypoxia-inducible factor-1 (HIF-1) is the master regulator of the cellular response to hypoxia and its expression levels are tightly controlled through synthesis and degradation. It is widely accepted that HIF-1alpha protein accumulation during hypoxia results from inhibition of its oxygen-dependent degradation by the von Hippel Lindau protein (pVHL) pathway. However, recent data describe new pVHL- or oxygen-independent mechanisms for HIF-1alpha degradation. Furthermore, the hypoxia-induced increase in HIF-1alpha levels is facilitated by the continued translation of HIF-1alpha during hypoxia despite the global inhibition of protein translation. Recent work has contributed to an increased understanding of the mechanisms that control the translation and degradation of HIF-1alpha under both normoxic and hypoxic conditions.

Publication types

  • Research Support, N.I.H., Extramural
  • Review

MeSH terms

  • Animals
  • Gene Expression Regulation* / drug effects
  • Humans
  • Hypoxia / physiopathology*
  • Hypoxia-Inducible Factor 1 / genetics*
  • Hypoxia-Inducible Factor 1, alpha Subunit / metabolism*
  • Protein Biosynthesis / physiology
  • Receptors for Activated C Kinase
  • Receptors, Cell Surface / metabolism
  • Small Ubiquitin-Related Modifier Proteins / metabolism
  • Ubiquitin Thiolesterase / metabolism
  • Von Hippel-Lindau Tumor Suppressor Protein / metabolism

Substances

  • Hypoxia-Inducible Factor 1
  • Hypoxia-Inducible Factor 1, alpha Subunit
  • Receptors for Activated C Kinase
  • Receptors, Cell Surface
  • Small Ubiquitin-Related Modifier Proteins
  • USP20 protein, human
  • Von Hippel-Lindau Tumor Suppressor Protein
  • Ubiquitin Thiolesterase