Cited by 195Metabolism and Genetic DisordersAmino Acid Enzymes and MetabolismBiochemical Acid Research Studies

A gene encoding a putative FAD-dependent l -2-hydroxyglutarate dehydrogenase is mutated in l -2-hydroxyglutaric aciduria

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Rzem, Rim, Veiga-da-Cunha, Maria, Noël, Gaëtane, Goffette, Sophie, Nassogne, Marie-Cécile, Tabarki, Brahim, Schöller, Christina, Marquardt, Thorsten +2 more·2004·Proceedings of the National Academy of Sciences

Abstract

The purpose of this study was to identify the biochemical and genetic defect in l -2-hydroxyglutaric aciduria, a neurometabolic disorder characterized by the presence of elevated concentrations of l -2-hydroxyglutaric acid in urine, plasma, and cerebrospinal fluid. Evidence is provided for the existence in rat tissues of a FAD-dependent enzyme catalyzing specifically the oxidation of l -2-hydroxyglutarate to α-ketoglutarate. This enzyme is mainly expressed in liver and kidney but also at lower levels in heart, brain, and other tissues. Subcellular fractionation indicates that the liver enzyme is present in mitochondria, where it is bound to membranes. Based on this information, a database search led to the identification of a gene encoding a human hypothetical protein homologous to bacterial FAD-dependent malate dehydrogenases and targeted to mitochondria. The gene encoding this protein, present on chromosome 14q22.1, was found to be in a region homozygous in patients with l -2-hydroxyglutaric aciduria from two consanguineous families. Three mutations that replaced a highly conserved residue (Lys-71-Glu and Glu-176-Asp) or removed exon 9 were identified in homozygous state in patients from three distinct families and were found to cosegregate with the disease. It is concluded that l -2-hydroxyglutarate is normally metabolized to α-ketoglutarate in mammalian tissues and that l -2-hydroxyglutaric aciduria is caused by mutations in the gene that most likely encodes l -2-hydroxyglutarate dehydrogenase. The pathological findings observed in this metabolic disorder must therefore be due to a toxic effect of l -2-hydroxyglutarate on the central nervous system.

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Crossref · 10.1073/pnas.0404840101

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  • D-2-HG occupies the active site of histone demethylases, increasing histone methylation in primary gliomas.

    “D-2-HG produced by mIDH1/2 has been shown to drive a CpG island methylator phenotype (G-CIMP) in both glioma and ICC tumours to promote tumorigenesis, and has also been found to occupy the active site of histone demethylases thereby increasing histone methylation in primary gliomas121,123-125.”
  • D-2-HG produced by mIDH1/2 drives a CpG island methylator phenotype in glioma and ICC tumours to promote tumorigenesis.

    “D-2-HG produced by mIDH1/2 has been shown to drive a CpG island methylator phenotype (G-CIMP) in both glioma and ICC tumours to promote tumorigenesis, and has also been found to occupy the active site of histone demethylases thereby increasing histone methylation in primary gliomas121,123-125.”

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  1. [26]Topcu, M., Jobard, F., Halliez, S., Coskun, T., Yalcinkaya, C., Gerceker, F. O., Wanders, R. J., Prud'homme, J. F., Lathrop, M., Ozguc, M., et al. (2004) Hum. Mol. Genet. , in press.

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Authors
Rzem, R., Veiga-da-Cunha, M., Noël, G., Goffette, S., Nassogne, M.-C., Tabarki, B., Schöller, C., Marquardt, T., Vikkula, M., & Van Schaftingen, E.
Affiliations
  • Laboratories of Physiological Chemistry and Human Molecular Genetics, Christian de Duve Institute of Cellular Pathology, Université Catholique de Louvain, Avenue Hippocrate 75, B-1200 Brussels, Belgium; Services de Neurologie and Neurologie Pédiatrique, Cliniques Universitaires Saint-Luc, Avenue Hippocrate 10, B-1200 Brussels, Belgium; Service de Pédiatrie, Hôpital Farhat Hached, 4000 Sousse, Tunisia; and Klinik für Kinderund Jugendmedizin, Universitätsklinikum Münster, 48149 Münster, Germany
  • Cliniques Universitaires Saint-Luc (BE)
Venue
Proceedings of the National Academy of Sciences
Published
2004-11-17
Volume
101
Issue
48
Pages
16849-16854
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2064848673
Cited by
195
References
26
Citations by year
2026: 8 · 2025: 9 · 2024: 13 · 2023: 9 · 2022: 12 · 2021: 10 · 2020: 7 · 2019: 10 · 2018: 10 · 2017: 12 · 2016: 7 · 2015: 9 · 2014: 11 · 2013: 3 · 2012: 10
FWCI
3.05
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • DIAL (Catholic University of Leuven) (submittedVersion, other-oa)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Clinical Biochemistry › Metabolism and Genetic Disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biochemistry › Amino Acid Enzymes and Metabolism
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biochemistry › Biochemical Acid Research Studies
Keywords
L-2-hydroxyglutaric aciduria, FAD-dependent enzyme, alpha-ketoglutarate, mitochondrial enzymes, homozygosity mapping, consanguineous family, missense mutations, exon 9 deletion, neurometabolic disorders
MeSH terms
Alcohol Oxidoreductases, Amino Acid Sequence, Flavin-Adenine Dinucleotide, Female, Glutarates, Humans, Male, Molecular Sequence Data, Mutation, Pedigree, Subcellular Fractions, Sequence Homology, Amino Acid

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