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2018 ; 6
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): ä Nephropedia Template TP
gab.com Text
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English Wikipedia
Metabolic Regulation of Hypoxia-Inducible Transcription Factors: The Role of
Small Molecule Metabolites and Iron
#MMPMID29772792
Bailey PSJ
; Nathan JA
Biomedicines
2018[May]; 6
(2
): ä PMID29772792
show ga
Hypoxia-inducible transcription factors (HIFs) facilitate cellular adaptations to
low-oxygen environments. However, it is increasingly recognised that HIFs may be
activated in response to metabolic stimuli, even when oxygen is present.
Understanding the mechanisms for the crosstalk that exists between HIF signalling
and metabolic pathways is therefore important. This review focuses on the
metabolic regulation of HIFs by small molecule metabolites and iron, highlighting
the latest studies that explore how tricarboxylic acid (TCA) cycle intermediates,
2-hydroxyglutarate (2-HG) and intracellular iron levels influence the HIF
response through modulating the activity of prolyl hydroxylases (PHDs). We also
discuss the relevance of these metabolic pathways in physiological and disease
contexts. Lastly, as PHDs are members of a large family of 2-oxoglutarate (2-OG)
dependent dioxygenases that can all respond to metabolic stimuli, we explore the
broader role of TCA cycle metabolites and 2-HG in the regulation of 2-OG
dependent dioxygenases, focusing on the enzymes involved in chromatin
remodelling.