Cited by 232Cancer, Hypoxia, and MetabolismUbiquitin and proteasome pathwaysKruppel-like factors research

Sumoylation increases HIF-1α stability and its transcriptional activity

Bae, Seong-Hui, Jeong, Joo-Won, Park, Jeong Ae, Kim, Se-Hee, Bae, Moon-Kyoung, Choi, Soo-Joon, Kim, Kyu-Won·2004·Biochemical and Biophysical Research Communications

Abstract

HIF-1 is closely involved in various biological processes, including angiogenesis, energy metabolism, and cell survival. HIF-1 consists of an oxygen-sensitive HIF-1alpha and oxygen-insensitive HIF-1beta. Oxygen-sensitive HIF-1alpha is subjected to post-translational modifications such as hydroxylation, ubiquitination, and acetylation, which are related to the regulation of its stability. In this present study, we found that the ectopic expression of SUMO-1 increased HIF-1alpha stability by the co-transfection study with HIF-1alpha and SUMO-1. Furthermore, the ectopic expression of SUMO-1 enhanced the transcriptional activity of HIF-1alpha. In the subsequent immunoprecipitation assay, SUMO-1 was co-immunoprecipitated with HIF-1alpha, implying that HIF-1alpha is covalently modified by SUMO-1. Thereafter, using a series of lysine mutants in the ODD domain, we found that HIF-1alpha was sumoylated at Lys(391) and Lys(477), suggesting that sumoylation at these two lysine residues enhances HIF-1alpha stability by possibly modulating other post-translational modifications. Altogether, we demonstrate that HIF-1alpha is upregulated through SUMO-1 modification at Lys(391)/Lys(477) residues, which may stabilize HIF-1alpha and enhance its transcriptional activity.

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Crossref · 10.1016/j.bbrc.2004.09.068

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  • Altered SUMO conjugation may contribute to reduced HIF-1α protein levels.

    “Because SUMOylation enhances both the stability and transcriptional activity of HIF-1α [190], altered SUMO conjugation may contribute to reduced HIF-1α protein levels.”

    From HIF inhibition: Current strategies and clinical challenges (2026) · cites this paper as [190]

  • SUMOylation enhances both the stability and transcriptional activity of HIF-1α.

    “Because SUMOylation enhances both the stability and transcriptional activity of HIF-1α [190], altered SUMO conjugation may contribute to reduced HIF-1α protein levels.”

    From HIF inhibition: Current strategies and clinical challenges (2026) · cites this paper as [190]

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Authors
Bae, S.-H., Jeong, J.-W., Park, J. A., Kim, S.-H., Bae, M.-K., Choi, S.-J., & Kim, K.-W.
Affiliations
  • Seoul National University (KR)
  • Harvard University (US)
  • Pusan National University (KR)
Corresponding author
Kim, Kyu-Won
Venue
Biochemical and Biophysical Research Communications
Publisher
Elsevier BV
Published
2004-11
Volume
324
Issue
1
Pages
394-400
ISSN
0006-291X (ISSN-L)
OpenAlex
W2085483520
Cited by
232
References
26
Citations by year
2026: 5 · 2025: 10 · 2024: 15 · 2023: 8 · 2022: 12 · 2021: 8 · 2020: 7 · 2019: 5 · 2018: 8 · 2017: 8 · 2016: 9 · 2015: 11 · 2014: 16 · 2013: 12 · 2012: 8
FWCI
3.72
Type
journal article
Language
en
Open access
closed
Locations
  • Biochemical and Biophysical Research Communications (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer, Hypoxia, and Metabolism
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ubiquitin and proteasome pathways
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Kruppel-like factors research
Keywords
HIF-1α, SUMOylation, SUMO1, protein stability, transcriptional activity, lysine modification, post-translational modification, ARNT, oxygen sensing, lysine mutants
MeSH terms
Amino Acid Sequence, Animals, Enzyme Stability, HeLa Cells, Humans, Lysine, Molecular Sequence Data, Protein Processing, Post-Translational, Transcription Factors, Transcription, Genetic, Gene Expression Regulation, Enzymologic, SUMO-1 Protein, Hypoxia-Inducible Factor 1, alpha Subunit

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