Cited by 144Cancer, Hypoxia, and MetabolismErythropoietin and Anemia TreatmentKruppel-like factors research

Carboxyl-Terminal Transactivation Activity of Hypoxia-Inducible Factor 1α Is Governed by a von Hippel-Lindau Protein-Independent, Hydroxylation-Regulated Association with p300/CBP

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Sang, Nianli, Fang, Jie, Srinivas, Vickram, Leshchinsky, Irene, Caro, Jaime·2002·Molecular and Cellular Biology

Abstract

Hypoxia-inducible factor 1 complex (HIF-1) plays a pivotal role in oxygen homeostasis and adaptation to hypoxia. Its function is controlled by both the protein stability and the transactivation activity of its alpha subunit, HIF-1 alpha. Hydroxylation of at least two prolyl residues in the oxygen-dependent degradation domain of HIF-1 alpha regulates its interaction with the von Hippel-Lindau protein (VHL) that targets HIF-1 alpha for ubiquitination and proteasomal degradation. Several prolyl hydroxylases have been found to specifically hydroxylate HIF-1 alpha. In this report, we investigated possible roles of VHL and hydroxylases in the regulation of the transactivation activity of the C-terminal activating domain (CAD) of HIF-1 alpha. We demonstrate that regulation of the transactivation activity of HIF-1 alpha CAD also involves hydroxylase activity but does not require functional VHL. In addition, stimulation of the CAD activity by a hydroxylase inhibitor, hypoxia, and desferrioxamine was severely blocked by the adenoviral oncoprotein E1A but not by an E1A mutant defective in targeting p300/CBP. We further demonstrate that a hydroxylase inhibitor, hypoxia, and desferrioxamine promote the functional and physical interaction between HIF-1 alpha CAD and p300/CBP in vivo. Taken together, our data provide evidence that hypoxia-regulated stabilization and transcriptional stimulation of HIF-1 alpha function are regulated through partially overlapping but distinguishable pathways.

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  1. [17]Ivan, M., K. Kondo, H. Yang, W. Kim, J. Valiando, M. Ohh, A. Salic, J. M. Asara, W. S. Lane, and W. G. Kaelin, Jr. 2001. HIFalpha targeted for VHL-mediated destruction by proline hydroxylation: implications for O2 sensing. Science 292:464-468. [DOI] [PubMed] [Google Scholar]
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Authors
Sang, N., Fang, J., Srinivas, V., Leshchinsky, I., & Caro, J.
Affiliations
Thomas Jefferson University (US)
Corresponding author
Caro, Jaime
Venue
Molecular and Cellular Biology
Published
2002-05-01
Volume
22
Issue
9
Pages
2984-2992
ISSN
  • 0270-7306 (ISSN-L)
  • 1098-5549
OpenAlex
W2121895466
Cited by
143
References
55
Citations by year
2025: 2 · 2024: 2 · 2023: 6 · 2022: 3 · 2021: 1 · 2020: 2 · 2019: 1 · 2018: 1 · 2017: 3 · 2016: 5 · 2015: 8 · 2014: 3 · 2013: 5 · 2012: 4
FWCI
6.64
Type
journal article
Language
en
Open access
Locations
  • Molecular and Cellular Biology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • American Heart Association
  • Fudan University
  • Huashan Hospital
  • National Institutes of Health
  • National Heart, Lung, and Blood Institute (T32HL007821)
  • National Cancer Institute (R01CA089212, R01CA89212-02)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer, Hypoxia, and Metabolism
  • Health Sciences › Medicine › Hematology › Erythropoietin and Anemia Treatment
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Kruppel-like factors research
Keywords
hypoxia-inducible factor-1α, prolyl hydroxylase, von Hippel-Lindau protein, CBP/p300, deferoxamine, hypoxia, oxygen homeostasis, transcriptional regulation, protein stability
MeSH terms
Hypoxia, Aspartate Carbamoyltransferase, Carbamoyl-Phosphate Synthase (Glutamine-Hydrolyzing), Cell Line, Deferoxamine, Dihydroorotase, DNA-Binding Proteins, HeLa Cells, Humans, Mixed Function Oxygenases, Hydroxylation, Ligases, Multienzyme Complexes, Nuclear Proteins, Protein Binding, Transcription Factors, Blotting, Western, Transcriptional Activation, Trans-Activators, Adenovirus E1A Proteins, Protein Isoforms, Tumor Suppressor Proteins, Ubiquitin-Protein Ligases, Hypoxia-Inducible Factor 1, Von Hippel-Lindau Tumor Suppressor Protein, Hypoxia-Inducible Factor 1, alpha Subunit

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