HIF Prolyl-4-hydroxylase Interacting Proteins: Consequences for Drug Targeting

被引:16
|
作者
Wenger, Roland H. [1 ,2 ]
Camenisch, Gieri [1 ,2 ]
Stiehl, Daniel P. [1 ,2 ]
Katschinski, Doerthe M. [3 ]
机构
[1] Univ Zurich, Inst Physiol, CH-8057 Zurich, Switzerland
[2] Univ Zurich, Zurich Ctr Integrat Human Physiol ZIHP, CH-8057 Zurich, Switzerland
[3] Univ Gottingen, Dept Cardiovasc Physiol, D-37073 Gottingen, Germany
基金
瑞士国家科学基金会;
关键词
Asparaginyl hydroxylase; hypoxia; iron; oxidative decarboxylation; oxygen sensing; prolyl-4-hydroxylase; protein stability; succinate; HYPOXIA-INDUCIBLE-FACTOR; OXYGEN-DEPENDENT DEGRADATION; HYDROXYLASE DOMAIN PROTEIN-2; TUMOR-SUPPRESSOR PROTEIN; RNA-POLYMERASE-II; PROLYL HYDROXYLASE; KAPPA-B; TRANSCRIPTIONAL ACTIVITY; ASPARAGINYL HYDROXYLASE; DOWN-REGULATION;
D O I
10.2174/138161209789649411
中图分类号
R9 [药学];
学科分类号
1007 ;
摘要
Protein stability of hypoxia-inducible factor (HIF) alpha subunits is regulated by the oxygen-sensing prolyl-4-hydroxylase domain (PHD) enzymes. Under oxygen-limited conditions, HIF alpha subunits are stabilized and form active HIF transcription factors that induce a large number of genes involved in adaptation to hypoxic conditions with physiological implications for erythropoiesis, angiogenesis, cardiovascular function and cellular metabolism. Oxygen-sensing is regulated by the co-substrate-dependent activity and hypoxia-inducible abundance of the PHD enzymes which trigger HIF alpha stability even under low oxygen conditions. Because HIF alpha itself is notoriously reluctant to the development of antagonists, an increase in PHD activity would offer an interesting alternative to the development of drugs that interfere specifically with the HIF signalling pathway. Interestingly, among the recently discovered PHD interacting proteins were not only novel downstream targets but also upstream regulators of PHDs. Their PHD isoform-specific interaction offers the possibility to target distinct PHD isoforms and their non-identical downstream signalling pathways. This review summarizes our current knowledge on PHD interacting proteins, including upstream regulators, chaperonins, scaffolding proteins, and novel downstream transcription factors.
引用
收藏
页码:3886 / 3894
页数:9
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