Cited by 288Amino Acid Enzymes and MetabolismCancer, Hypoxia, and MetabolismPI3K/AKT/mTOR signaling in cancer

Differential Glutamate Metabolism in Proliferating and Quiescent Mammary Epithelial Cells

Open access
Coloff, Jonathan L., Murphy, J. Patrick, Braun, Craig R., Harris, Isaac S., Shelton, Laura M., Kami, Kenjiro, Gygi, Steven P., Selfors, Laura M. +1 more·2016·Cell Metabolism

Abstract

Mammary epithelial cells transition between periods of proliferation and quiescence during development, menstrual cycles, and pregnancy, and as a result of oncogenic transformation. Utilizing an organotypic 3D tissue culture model coupled with quantitative metabolomics and proteomics, we identified significant differences in glutamate utilization between proliferating and quiescent cells. Relative to quiescent cells, proliferating cells catabolized more glutamate via transaminases to couple non-essential amino acid (NEAA) synthesis to α-ketoglutarate generation and tricarboxylic acid (TCA) cycle anaplerosis. As cells transitioned to quiescence, glutamine consumption and transaminase expression were reduced, while glutamate dehydrogenase (GLUD) was induced, leading to decreased NEAA synthesis. Highly proliferative human tumors display high transaminase and low GLUD expression, suggesting that proliferating cancer cells couple glutamine consumption to NEAA synthesis to promote biosynthesis. These findings describe a competitive and partially redundant relationship between transaminases and GLUD, and they reveal how coupling of glutamate-derived carbon and nitrogen metabolism can be regulated to support cell proliferation.

Integrity signals

Registry

Crossref · 10.1016/j.cmet.2016.03.016

Cites

58 of 58 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

The text we found for this paper looks like another document, so its claims and self-check weren’t run. The registry and citation checks still apply.

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The text we found for this paper looks like another document, so the self-check wasn’t run.

Cites

1 retracted

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Coloff, J. L., Murphy, J. P., Braun, C. R., Harris, I. S., Shelton, L. M., Kami, K., Gygi, S. P., Selfors, L. M., & Brugge, J. S.
Affiliations
  • Harvard University (US)
  • Human Metabolome Technologies, Inc. (Japan) (JP)
Corresponding author
Brugge, Joan S.
Venue
Cell Metabolism
Publisher
Elsevier BV
Published
2016-05
Volume
23
Issue
5
Pages
867-880
ISSN
1550-4131 (ISSN-L)
OpenAlex
W2343650972
Cited by
288
References
58
Citations by year
2026: 12 · 2025: 13 · 2024: 23 · 2023: 32 · 2022: 40 · 2021: 44 · 2020: 40 · 2019: 26 · 2018: 22 · 2017: 23 · 2016: 12
FWCI
18.27
Type
journal article
Language
en
Open access
Locations
  • Cell Metabolism (publishedVersion)
  • PubMed (publishedVersion)
  • IslandScholar (University of Prince Edward Island) (submittedVersion)
Funders
National Cancer Institute (P30CA016672)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biochemistry › Amino Acid Enzymes and Metabolism
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer, Hypoxia, and Metabolism
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › PI3K/AKT/mTOR signaling in cancer
Keywords
glutamate metabolism, mammary epithelial cells, cell proliferation, quiescent cells, transaminases, glutamate dehydrogenase, glutamine consumption, alpha-ketoglutarate, TCA cycle anaplerosis, mammary tumors
MeSH terms
Transaminases, Breast Neoplasms, Cells, Cultured, Epithelial Cells, Female, Glutamate Dehydrogenase, Humans, Models, Biological, Nitrogen Isotopes, Signal Transduction, Glutamic Acid, Phosphatidylinositol 3-Kinases, Proteomics, Mammary Glands, Human, Cell Proliferation, Proto-Oncogene Proteins c-akt, Metabolomics, TOR Serine-Threonine Kinases

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review