Cited by 211Genetics, Aging, and Longevity in Model OrganismsCancer, Hypoxia, and MetabolismAutophagy in Disease and Therapy

The HIF-1 Hypoxia-Inducible Factor Modulates Lifespan in C. elegans

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Zhang, Yi, Shao, Zhiyong, Zhai, Zhiwei, Shen, Chuan, Powell-Coffman, Jo Anne·2009·PLoS ONE

Abstract

During normal development or during disease, animal cells experience hypoxic (low oxygen) conditions, and the hypoxia-inducible factor (HIF) transcription factors implement most of the critical changes in gene expression that enable animals to adapt to this stress. Here, we examine the roles of HIF-1 in post-mitotic aging. We examined the effects of HIF-1 over-expression and of hif-1 loss-of-function mutations on longevity in C. elegans, a powerful genetic system in which adult somatic cells are post-mitotic. We constructed transgenic lines that expressed varying levels of HIF-1 protein and discovered a positive correlation between HIF-1 expression levels and lifespan. The data further showed that HIF-1 acted in parallel to the SKN-1/NRF and DAF-16/FOXO transcription factors to promote longevity. HIF-1 over-expression also conferred increased resistance to heat and oxidative stress. We isolated and characterized additional hif-1 mutations, and we found that each of 3 loss-of-function mutations conferred increased longevity in normal lab culture conditions, but, unlike HIF-1 over-expression, a hif-1 deletion mutation did not extend the lifespan of daf-16 or skn-1 mutants. We conclude that HIF-1 over-expression and hif-1 loss-of-function mutations promote longevity by different pathways. These data establish HIF-1 as one of the key stress-responsive transcription factors that modulate longevity in C. elegans and advance our understanding of the regulatory networks that link oxygen homeostasis and aging.

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Authors
Zhang, Y., Shao, Z., Zhai, Z., Shen, C., & Powell-Coffman, J. A.
Affiliations
Iowa State University (US)
Venue
PLoS ONE
Published
2009-07-27
Volume
4
Issue
7
Pages
e6348
ISSN
1932-6203 (ISSN-L)
OpenAlex
W2076724288
Cited by
211
References
50
Citations by year
2026: 7 · 2025: 10 · 2024: 11 · 2023: 5 · 2022: 10 · 2021: 8 · 2020: 10 · 2019: 14 · 2018: 12 · 2017: 7 · 2016: 16 · 2015: 22 · 2014: 18 · 2013: 9 · 2012: 11
FWCI
5.33
Type
journal article
Language
en
Open access
Locations
  • PLoS ONE (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Iowa State University Digital Repository (Iowa State University) (submittedVersion, other-oa)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
  • Figshare (submittedVersion, cc-by)
Funders
  • Iowa State University
  • National Institutes of Health
  • National Institute of General Medical Sciences (R01GM078424)
  • National Center for Research Resources
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer, Hypoxia, and Metabolism
  • Health Sciences › Medicine › Epidemiology › Autophagy in Disease and Therapy
Keywords
HIF-1, hypoxia-inducible factor, lifespan, longevity, Caenorhabditis elegans, DAF-16/FOXO, transcription factors, oxidative stress resistance, heat stress resistance, oxygen homeostasis, stress response, loss-of-function mutations
MeSH terms
Animals, Longevity, Mutation, Transcription Factors, Caenorhabditis elegans, Reverse Transcriptase Polymerase Chain Reaction, Caenorhabditis elegans Proteins

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