Cited by 215Cancer, Hypoxia, and MetabolismAmino Acid Enzymes and MetabolismCancer Research and Treatments

Analysis of glutamine dependency in non-small cell lung cancer: GLS1 splice variant GAC is essential for cancer cell growth

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van den Heuvel, A. Pieter J., Jing, Junping, Wooster, Richard F., Bachman, Kurtis E.·2012·Cancer Biology & Therapy

Abstract

One of the hallmarks of cancer is metabolic deregulation. Many tumors display increased glucose uptake and breakdown through the process of aerobic glycolysis, also known as the Warburg effect. Less studied in cancer development and progression is the importance of the glutamine (Gln) pathway, which provides cells with a variety of essential products to sustain cell proliferation, such as ATP and macromolecules for biosynthesis. To this end Gln dependency was assessed in a panel of non-small cell lung cancer lines (NSCLC). Gln was found to be essential for the growth of cells with high rates of glutaminolysis, and after exploring multiple genes in the Gln pathway, GLS1 was found to be the key enzyme associated with this dependence. This dependence was confirmed by observing the rescue of decreased growth by exogenous addition of downstream metabolites of glutaminolysis. Expression of the GLS1 splice variant KGA was found to be decreased in tumors compared with normal lung tissue. Transient knock down of GLS1 splice variants indicated that loss of GAC had the most detrimental effect on cancer cell growth. In conclusion, NSCLC cell lines depend on Gln for glutaminolysis to a varying degree, in which the GLS1 splice variant GAC plays an essential role and is a potential target for cancer metabolism-directed therapy.

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  • CB-839 sensitivity has been reported to correlate to a number of functional measures including glutaminase activity, the ratio of intracellular glutamate to glutamine, and the extent to which treatment promoted accumulation of cellular glutamine or depletion of cellular glutamate.

    “CB-839 sensitivity has been reported to correlate to a number of functional measures including glutaminase activity, the ratio of intracellular glutamate to glutamine, and the extent to which treatment promoted accumulation of cellular glutamine or depletion of cellular glutamate [19].”

    From Combined blockade of EGFR and glutamine metabolism in preclinical models of colorectal cancer (2020) · cites this paper as [19]

    The NSCLC cell-line results report that glutamine consumption correlates with glutamine dependency, and the GLS1-inhibition results compare growth responses to BPTES. They do not report CB-839 sensitivity or correlations with glutaminase activity, an intracellular glutamate-to-glutamine ratio, or treatment-induced intracellular metabolite changes. The amino-acid analysis measures glutamine and glutamate in conditioned media, not inside cells (page numbers unavailable in our copy). (LLM, conf=0.85)

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Authors
van den Heuvel, A. P. J., Jing, J., Wooster, R. F., & Bachman, K. E.
Affiliations
GlaxoSmithKline (United Kingdom) (GB)
Corresponding author
Bachman, Kurtis E.
Venue
Cancer Biology & Therapy
Published
2012-10
Volume
13
Issue
12
Pages
1185-1194
ISSN
  • 1538-4047 (ISSN-L)
  • 1555-8576
OpenAlex
W1973304708
Cited by
209
References
30
Citations by year
2026: 7 · 2025: 15 · 2024: 14 · 2023: 11 · 2022: 19 · 2021: 15 · 2020: 14 · 2019: 19 · 2018: 25 · 2017: 19 · 2016: 24 · 2015: 15 · 2014: 6 · 2013: 6
FWCI
2.86
Type
journal article
Language
en
Open access
Locations
  • Cancer Biology & Therapy (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
GlaxoSmithKline
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 › Biotechnology › Cancer Research and Treatments
Keywords
glutamine dependency, non-small cell lung cancer, glutaminolysis, GLS1, cancer metabolism, Warburg effect, aerobic glycolysis, glutamine metabolism
MeSH terms
Carcinoma, Non-Small-Cell Lung, Glutaminase, Glutamine, Glycolysis, Humans, Lung Neoplasms, Protein Isoforms, Cell Line, Tumor, Cell Proliferation, Molecular Targeted Therapy

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