Cited by 646Cancer, Lipids, and MetabolismAngiogenesis and VEGF in CancerLipid metabolism and biosynthesis

Fatty acid carbon is essential for dNTP synthesis in endothelial cells

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Schoors, Sandra, Bruning, Ulrike, Missiaen, Rindert, Queiroz, Karla C. S., Borgers, Gitte, Elia, Ilaria, Zecchin, Annalisa, Cantelmo, Anna Rita +16 more·2015·Nature

Abstract

The metabolism of endothelial cells during vessel sprouting remains poorly studied. Here we report that endothelial loss of CPT1A, a rate-limiting enzyme of fatty acid oxidation (FAO), causes vascular sprouting defects due to impaired proliferation, not migration, of human and murine endothelial cells. Reduction of FAO in endothelial cells did not cause energy depletion or disturb redox homeostasis, but impaired de novo nucleotide synthesis for DNA replication. Isotope labelling studies in control endothelial cells showed that fatty acid carbons substantially replenished the Krebs cycle, and were incorporated into aspartate (a nucleotide precursor), uridine monophosphate (a precursor of pyrimidine nucleoside triphosphates) and DNA. CPT1A silencing reduced these processes and depleted endothelial cell stores of aspartate and deoxyribonucleoside triphosphates. Acetate (metabolized to acetyl-CoA, thereby substituting for the depleted FAO-derived acetyl-CoA) or a nucleoside mix rescued the phenotype of CPT1A-silenced endothelial cells. Finally, CPT1 blockade inhibited pathological ocular angiogenesis in mice, suggesting a novel strategy for blocking angiogenesis.

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Authors
Schoors, S., Bruning, U., Missiaen, R., Queiroz, K. C. S., Borgers, G., Elia, I., Zecchin, A., Cantelmo, A. R., Christen, S., Goveia, J., Heggermont, W., Goddé, L., Vinckier, S., Van Veldhoven, P. P., Eelen, G., Schoonjans, L., Gerhardt, H., Dewerchin, M., Baes, M., De Bock, K., Ghesquière, B., Lunt, S. Y., Fendt, S.-M., & Carmeliet, P.
Affiliations
  • KU Leuven (BE)
  • Universitair Ziekenhuis Leuven (BE)
  • Max Delbrück Center (DE)
  • Michigan State University (US)
Corresponding author
  • Fendt, Sarah-Maria
  • Carmeliet, Peter
Venue
Nature
Published
2015-04-01
Volume
520
Issue
7546
Pages
192-197
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W2075209047
Cited by
646
References
37
Citations by year
2026: 50 · 2025: 65 · 2024: 78 · 2023: 39 · 2022: 66 · 2021: 55 · 2020: 68 · 2019: 45 · 2018: 61 · 2017: 55 · 2016: 43 · 2015: 19
FWCI
19.61
Type
journal article
Language
en
Open access
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • MDC Repository (Max-Delbrueck-Center for Molecular Medicine) (submittedVersion)
  • Lirias (KU Leuven) (submittedVersion, other-oa)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer, Lipids, and Metabolism
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Angiogenesis and VEGF in Cancer
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biochemistry › Lipid metabolism and biosynthesis
Keywords
fatty acid oxidation, CPT1A, endothelial cells, angiogenesis, vessel sprouting, de novo nucleotide synthesis, dNTP synthesis, aspartic acid, uridine monophosphate, acetyl-CoA, TCA cycle, endothelial cell proliferation, pathological angiogenesis, retinopathy of prematurity, ocular angiogenesis
MeSH terms
Adenosine Triphosphate, Animals, Blood Vessels, Carbon, Carnitine O-Palmitoyltransferase, Citric Acid Cycle, Disease Models, Animal, DNA, Fatty Acids, Glucose, Humans, Neovascularization, Pathologic, Nucleotides, Oxidation-Reduction, Retinopathy of Prematurity, Acetic Acid, Gene Silencing, Endothelial Cells, Cell Line, Tumor, Cell Proliferation, Mice, Human Umbilical Vein Endothelial Cells

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