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

MY Koh, TR Spivak-Kroizman, G Powis - Trends in biochemical sciences, 2008 - cell.com
MY Koh, TR Spivak-Kroizman, G Powis
Trends in biochemical sciences, 2008cell.com
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-1α 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-1α
degradation. Furthermore, the hypoxia-induced increase in HIF-1α levels is facilitated by the …
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-1α 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-1α degradation. Furthermore, the hypoxia-induced increase in HIF-1α levels is facilitated by the continued translation of HIF-1α 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-1α under both normoxic and hypoxic conditions.
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