Cited by 314Cancer, Hypoxia, and MetabolismAmino Acid Enzymes and MetabolismSulfur Compounds in Biology

Environmental cystine drives glutamine anaplerosis and sensitizes cancer cells to glutaminase inhibition

Open access
Muir, Alexander, Danai, Laura V, Gui, Dan Y, Waingarten, Chiara Y, Lewis, Caroline A, Vander Heiden, Matthew G·2017·eLife

Published version of a preprint

Abstract

Many mammalian cancer cell lines depend on glutamine as a major tri-carboxylic acid (TCA) cycle anaplerotic substrate to support proliferation. However, some cell lines that depend on glutamine anaplerosis in culture rely less on glutamine catabolism to proliferate in vivo. We sought to understand the environmental differences that cause differential dependence on glutamine for anaplerosis. We find that cells cultured in adult bovine serum, which better reflects nutrients available to cells in vivo, exhibit decreased glutamine catabolism and reduced reliance on glutamine anaplerosis compared to cells cultured in standard tissue culture conditions. We find that levels of a single nutrient, cystine, accounts for the differential dependence on glutamine in these different environmental contexts. Further, we show that cystine levels dictate glutamine dependence via the cystine/glutamate antiporter xCT/SLC7A11. Thus, xCT/SLC7A11 expression, in conjunction with environmental cystine, is necessary and sufficient to increase glutamine catabolism, defining important determinants of glutamine anaplerosis and glutaminase dependence in cancer.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.7554/elife.27713

Cites

85 of 85 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • xc− may constitute a therapeutic target in triple-negative breast carcinoma.

    “implying that xc− may constitute a therapeutic target in this setting [553, 554].”
  • The pronounced addiction of triple-negative breast carcinoma to glutamine relates at least in part to its ability to drive cystine uptake via xc−.

    “the pronounced addiction of triple-negative breast carcinoma to glutamine relates (at least in part) to its ability to drive cystine uptake via xc−, implying that xc− may constitute a therapeutic target in this setting [553, 554].”
  • Extracellular nutrient availability can influence cancer cell dependence on glutamine metabolism.

    “However, environmental factors may also come into play, as for instance, the availability of extracellular as discussed below, can influence the dependence of cancer cells on glutamine metabolism73.”
  • Glutamine is a direct fuel for glutathione as a source of glutamate and is indirectly responsible for cystine uptake via the xCT antiporter system, which takes up cystine and simultaneously secretes glutamate.

    “As shown in Fig. 3, glutamine is a direct fuel for the use of glutathione as a source of glutamate and is indirectly responsible for cystine uptake via the xCT antiporter system, which takes up cystine and simultaneously secretes glutamate61.”

    From Glutamine reliance in cell metabolism (2020) · cites this paper as [61]

  • Sensitivity to GLS inhibition in vitro is not always consistent in vivo and is dependent on extracellular cystine levels.

    “However, sensitivity to GLS inhibition in vitro is not always consistent in vivo, and is dependent on extracellular cystine levels.40”

Self-check

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

The self-check needs the paper’s full text.

Cites

1 retracted

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Muir, A., Danai, L. V., Gui, D. Y., Waingarten, C. Y., Lewis, C. A., & Vander Heiden, M. G.
Affiliations
  • Koch Institute for Integrative Cancer Research At MIT (US)
  • Whitehead Institute for Biomedical Research (US)
  • Koch Institute for Integrative Cancer Research and Department of Biology, Massachusetts Institute of Technology, Cambridge, United States
Venue
eLife
Published
2017-08-15
Volume
6
ISSN
2050-084X (ISSN-L)
OpenAlex
W2606822414
Cited by
311
References
85
Citations by year
2026: 19 · 2025: 26 · 2024: 37 · 2023: 36 · 2022: 29 · 2021: 39 · 2020: 52 · 2019: 42 · 2018: 22 · 2017: 8
FWCI
11.39
Type
journal article
Language
en
Open access
Locations
  • eLife (publishedVersion, cc-by)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion, cc-by-nc)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • DSpace@MIT (Massachusetts Institute of Technology) (submittedVersion, cc-by-nc)
Funders
  • National Institutes of Health (R01 CA168653, R01 CA201276, P30CA1405141, F32CA213810, F32CA210421, T32GM007753)
  • Lustgarten Foundation (Research Investigator Award)
  • Stand Up To Cancer (Innovative Research Grant)
  • Ludwig Institute for Cancer Research (Ludwig Center at MIT)
  • Howard Hughes Medical Institute (HHMI Faculty Scholar)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer, Hypoxia, and Metabolism
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biochemistry › Amino Acid Enzymes and Metabolism
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biochemistry › Sulfur Compounds in Biology
Keywords
cystine, glutamine anaplerosis, glutaminase inhibition, SLC7A11, glutamine catabolism, TCA cycle, cancer metabolism, bovine serum, culture medium composition, glutamine addiction
MeSH terms
Animals, Cattle, Cystine, Glutaminase, Glutamine, Humans, Mice, Nude, Neoplasms, Tumor Cells, Cultured, Amino Acid Transport System y+, Cell Proliferation, Tumor Microenvironment

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