Cited by 758Sirtuins and Resveratrol in MedicineCancer, Hypoxia, and MetabolismHistone Deacetylase Inhibitors Research

Sirtuin 1 Modulates Cellular Responses to Hypoxia by Deacetylating Hypoxia-Inducible Factor 1α

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Lim, Ji-Hong, Lee, Yoon-Mi, Chun, Yang-Sook, Chen, Junjie, Kim, Ja-Eun, Park, Jong-Wan·2010·Molecular Cell

Abstract

To survive in hypoxic environments, organisms must be able to cope with redox imbalance and oxygen deficiency. The SIRT1 deacetylase and the HIF-1alpha transcription factor act as redox and oxygen sensors, respectively. Here, we found that SIRT1 binds to HIF-1alpha and deacetylates it at Lys674, which is acetylated by PCAF. By doing so, SIRT1 inactivated HIF-1alpha by blocking p300 recruitment and consequently repressed HIF-1 target genes. During hypoxia, SIRT1 was downregulated due to decreased NAD(+) levels, which allowed the acetylation and activation of HIF-1alpha. Conversely, when the redox change was attenuated by blocking glycolysis, SIRT1 was upregulated, leading to the deacetylation and inactivation of HIF-1alpha even in hypoxia. In addition, we confirmed the SIRT1-HIF-1alpha interaction in hypoxic mouse tissues and observed in vivo that SIRT1 has negative effects on tumor growth and angiogenesis. Our results suggest that crosstalk between oxygen- and redox-responsive signal transducers occurs through the SIRT1-HIF-1alpha interaction.

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Crossref · 10.1016/j.molcel.2010.05.023

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  • When hypoxia is induced, NAD+/NADH levels increase due to glycolysis down-regulating SIRT-1, favoring HIF-1α activation.

    “However, when hypoxia is induced, the NAD+/NADH levels increase due to glycolysis down-regulating SIRT-1 favoring HIF-1α activation69.”

    From HIF-1α pathway: role, regulation and intervention for cancer therapy (2015) · cites this paper as [69]

    The Results (‘Regulation of corepressor function by nuclear NADH’) report that the NAD+/NADH ratio significantly decreased during hypoxia, contrary to the claimed increase. The Results (‘SIRT1 Links Glycolysis with HIF-1 Signaling’) do support the downstream link: the shift leads to SIRT1 suppression and HIF-1α activation. (LLM, conf=0.91)

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  • HIF-1α acetylation by PCAF at K674 in low NAD+ is critical for promoting p300 recruitment and expression of HIF-1α target genes.

    “Recent evidence indicates that HIF-1α acetylation by p300/CBP associated factor (PCAF) at K674 in an environment of low NAD+ is critical for promoting p300 recruitment and subsequent expression of HIF-1α target genes.”
  • SIRT1 opposes this reaction by catalyzing HIF-1α deacetylation at high NAD+ levels.

    “Sirtuin 1 (SIRT 1), a redox-sensing deacetylase considered as class III histone deacetylase (HDAC), opposes this reaction by catalyzing HIF-1α deacetylation at high NAD+ levels.”
  • SirT1 negatively regulates HIF-1α activity in hypoxia by direct deacetylation.

    “SirT1 was recently demonstrated to negatively regulate HIF-1α activity in hypoxia by direct deacetylation (Lim et al., 2010).”

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Research works printed but not linked: 2

  1. [3]3. Dali-Youcef, N. ∙ Lagouge, M. ∙ Froelich, S. ... Sirtuins: the ‘magnificient seven’, function, metabolism and longevity Ann. Med. 2007; 39:335-345 Crossref Scopus (377) PubMed Google Scholar
  2. [14]14. Ivan, M. ∙ Kondo, K. ∙ Yang, H. ... HIFα targeted for VHL-mediated destruction by praline hydroxylation: Implications for O2 sensing Science. 2001; 292:464-468 Crossref Scopus (4116) PubMed Google Scholar

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Authors
Lim, J.-H., Lee, Y.-M., Chun, Y.-S., Chen, J., Kim, J.-E., & Park, J.-W.
Affiliations
  • Seoul National University (KR)
  • The University of Texas MD Anderson Cancer Center (US)
  • Kyung Hee University (KR)
Corresponding author
  • Kim, Ja-Eun
  • Park, Jong-Wan
Venue
Molecular Cell
Publisher
Elsevier BV
Published
2010-06
Volume
38
Issue
6
Pages
864-878
ISSN
1097-2765 (ISSN-L)
OpenAlex
W2011376105
Cited by
758
References
45
Citations by year
2026: 28 · 2025: 34 · 2024: 55 · 2023: 54 · 2022: 41 · 2021: 64 · 2020: 62 · 2019: 37 · 2018: 42 · 2017: 44 · 2016: 53 · 2015: 51 · 2014: 47 · 2013: 57 · 2012: 56
FWCI
18.49
Type
journal article
Language
en
Open access
Locations
  • Molecular Cell (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Geriatrics and Gerontology › Sirtuins and Resveratrol in Medicine
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer, Hypoxia, and Metabolism
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Histone Deacetylase Inhibitors Research
Keywords
SIRT1, HIF-1α, hypoxia, protein deacetylation, PCAF, P300, NAD+, glycolysis, redox signaling, oxygen sensing, HIF-1 target genes, tumor growth, angiogenesis, lysine acetylation
MeSH terms
Acetylation, Animals, Cell Line, Humans, Male, Mice, Nude, Neoplasm Transplantation, Neoplasms, Experimental, Neovascularization, Pathologic, Oxidation-Reduction, Transplantation, Heterologous, Cell Hypoxia, Protein Transport, Cell Line, Tumor, p300-CBP Transcription Factors, Mice, Hypoxia-Inducible Factor 1, alpha Subunit, Sirtuin 1

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