Cited by 40DNA Repair MechanismsEffects of Radiation ExposureCancer, Hypoxia, and Metabolism

Fumarate hydratase loss promotes mitotic entry in the presence of DNA damage after ionising radiation

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Johnson, Timothy I., Costa, Ana S. H., Ferguson, Ashley N., Frezza, Christian·2018·Cell Death & Disease

Abstract

An altered response to DNA damage is commonly associated with genomic instability, a hallmark of cancer. Fumarate hydratase (FH) was recently characterised as a DNA repair factor required in non-homologous end-joining (NHEJ) through the local production of fumarate. Inactivating germline mutations in FH cause hereditary leiomyomatosis and renal cell cancer (HLRCC), a cancer syndrome characterised by accumulation of fumarate. Recent data indicate that, in FH-deficient cells, fumarate suppresses homologous recombination DNA repair upon DNA double-strand breaks, compromising genome integrity. Here, we show that FH loss confers resistance to DNA damage caused by ionising radiation (IR), and promotes early mitotic entry after IR in a fumarate-specific manner, even in the presence of unrepaired damage, by suppressing checkpoint maintenance. We also showed that higher levels of DNA damage foci are detectable in untreated FH-deficient cells. Overall, these data indicate that FH loss and fumarate accumulation lead to a weakened G2 checkpoint that predisposes to endogenous DNA damage and confers resistance to IR.

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  • Almost all IDH1/2 mutations occur in a few unique locations in the active site, resulting in neomorphic activity converting α-KG to D-2-HG.

    “Remarkably, almost all IDH1/2 mutations occur in a few unique locations in the active site of the enzymes, which results in the acquirement of a neomorphic enzymatic activity converting α-KG to the oncometabolite D-2-HG118-120.”

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Authors
Johnson, T. I., Costa, A. S. H., Ferguson, A. N., & Frezza, C.
Affiliations
University of Cambridge (GB)
Corresponding author
Frezza, Christian
Venue
Cell Death & Disease
Published
2018-09-06
Volume
9
Issue
9
Pages
913-913
ISSN
2041-4889 (ISSN-L)
OpenAlex
W2890126224
Cited by
40
References
22
Citations by year
2026: 3 · 2025: 4 · 2024: 3 · 2023: 4 · 2022: 7 · 2021: 10 · 2020: 7 · 2019: 1 · 2018: 1
FWCI
1.69
Type
journal article
Language
en
Open access
Locations
  • Cell Death and Disease (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
  • Apollo (University of Cambridge) (submittedVersion, cc-by)
  • Apollo (cc-by)
Funders
Medical Research Council (MC_UU_12022/6, SKAG106)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA Repair Mechanisms
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Effects of Radiation Exposure
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer, Hypoxia, and Metabolism
Keywords
fumarate hydratase, fumarate accumulation, ionizing radiation, DNA damage response, G2 checkpoint, mitotic entry, non-homologous end joining, homologous recombination, DNA double-strand breaks, genomic instability, hereditary leiomyomatosis and renal cell carcinoma, DNA damage foci, radioresistance (biology)
MeSH terms
Carcinoma, Renal Cell, DNA Damage, DNA Repair, Fumarate Hydratase, Humans, Kidney Neoplasms, Mitosis, Neoplastic Syndromes, Hereditary, Radiation, Ionizing, Skin Neoplasms, Uterine Neoplasms, G2 Phase, Germ-Line Mutation, Leiomyomatosis, Genomic Instability, Cell Line, Tumor

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