Cited by 221DNA Repair MechanismsCancer, Hypoxia, and MetabolismFungal and yeast genetics research

Fumarase: A Mitochondrial Metabolic Enzyme and a Cytosolic/Nuclear Component of the DNA Damage Response

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Yogev, Ohad, Yogev, Orli, Singer, Esti, Shaulian, Eitan, Goldberg, Michal, Fox, Thomas D., Pines, Ophry·2010·PLoS Biology

Abstract

In eukaryotes, fumarase (FH in human) is a well-known tricarboxylic-acid-cycle enzyme in the mitochondrial matrix. However, conserved from yeast to humans is a cytosolic isoenzyme of fumarase whose function in this compartment remains obscure. A few years ago, FH was surprisingly shown to underlie a tumor susceptibility syndrome, Hereditary Leiomyomatosis and Renal Cell Cancer (HLRCC). A biallelic inactivation of FH has been detected in almost all HLRCC tumors, and therefore FH was suggested to function as a tumor suppressor. Recently it was suggested that FH inhibition leads to elevated intracellular fumarate, which in turn acts as a competitive inhibitor of HPH (HIF prolyl hydroxylase), thereby causing stabilization of HIF (Hypoxia-inducible factor) by preventing proteasomal degradation. The transcription factor HIF increases the expression of angiogenesis regulated genes, such as VEGF, which can lead to high microvessel density and tumorigenesis. Yet this mechanism does not fully explain the large cytosolic population of fumarase molecules. We constructed a yeast strain in which fumarase is localized exclusively to mitochondria. This led to the discovery that the yeast cytosolic fumarase plays a key role in the protection of cells from DNA damage, particularly from DNA double-strand breaks. We show that the cytosolic fumarase is a member of the DNA damage response that is recruited from the cytosol to the nucleus upon DNA damage induction. This function of fumarase depends on its enzymatic activity, and its absence in cells can be complemented by high concentrations of fumaric acid. Our findings suggest that fumarase and fumaric acid are critical elements of the DNA damage response, which underlies the tumor suppressor role of fumarase in human cells and which is most probably HIF independent. This study shows an exciting crosstalk between primary metabolism and the DNA damage response, thereby providing a scenario for metabolic control of tumor propagation.

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Crossref · 10.1371/journal.pbio.1000328

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  • Somatic mutations in IDH1 and IDH2 are among the first genetic events in tumorigenesis in human glioma and AML and initiate pathogenesis by a common mechanism.

    “Genomic studies have established that somatic mutations in IDH1 and IDH2 are perhaps the first genetic events to occur during tumorigenesis in human glioma and AML, and appear to initiate pathogenesis by a common mechanism103,115-117.”

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  1. J Fillingham, 2006, GammaH2AX and its role in DNA double-strand break repair., Biochem Cell Biol, 84, 568

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Authors
Yogev, O., Yogev, O., Singer, E., Shaulian, E., Goldberg, M., Fox, T. D., & Pines, O.
Affiliations
  • Hebrew University of Jerusalem (IL)
  • Cornell University (US)
Corresponding author
Pines, Ophry
Venue
PLoS Biology
Published
2010-03-09
Volume
8
Issue
3
Pages
e1000328
ISSN
  • 1544-9173 (ISSN-L)
  • 1545-7885
OpenAlex
W2011300705
Cited by
220
References
39
Citations by year
2026: 13 · 2025: 10 · 2024: 11 · 2023: 10 · 2022: 15 · 2021: 23 · 2020: 16 · 2019: 22 · 2018: 11 · 2017: 11 · 2016: 12 · 2015: 10 · 2014: 7 · 2013: 16 · 2012: 8
FWCI
6.26
Type
journal article
Language
en
Open access
Locations
  • PLoS Biology (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • National University of Singapore (submittedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • UCL Discovery (University College London) (submittedVersion)
  • Figshare (submittedVersion, cc-by)
Funders
  • Israel Science Foundation
  • National Institutes of Health
  • National Institute of General Medical Sciences (GM-29362, R01GM029362)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA Repair Mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer, Hypoxia, and Metabolism
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Fungal and yeast genetics research
Keywords
fumarase, DNA damage response, DNA double-strand breaks, tumor suppressor, hereditary leiomyomatosis and renal cell carcinoma, fumaric acid, HIF prolyl hydroxylase, hypoxia-inducible factor, mitochondrial metabolism, primary metabolism
MeSH terms
Cell Nucleus, Cytosol, DNA Damage, Fumarate Hydratase, Fumarates, HeLa Cells, Histones, Humans, Isoenzymes, Kidney Neoplasms, Mitochondria, Saccharomyces cerevisiae, Leiomyomatosis, Tumor Suppressor Proteins, Saccharomyces cerevisiae Proteins, Hypoxia-Inducible Factor 1, alpha Subunit, Gene Knockdown Techniques

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