Evidence map›Paper›PMID 26595383›Full record

ArticleNature cell biology2015

Glutamine synthetase activity fuels nucleotide biosynthesis and supports growth of glutamine-restricted glioblastoma.

Saverio Tardito, Anaïs Oudin, Shafiq U Ahmed, Fred Fack, Olivier Keunen, Liang Zheng, Hrvoje Miletic, Per Øystein Sakariassen, Adam Weinstock, Allon Wagner and 10 more

Abstract read
In one paragraph

Article in Nature cell biology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 361 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
361citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

361 citing papers in PubMed, 1 synthesis or guideline pooled it.

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301 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

20 authors.

Saverio TarditoCancer Metabolism Research Unit, Cancer Research UK, Beatson Institute, Switchback Road, Glasgow G61 1BD, UK.
Anaïs OudinNorLux Neuro-Oncology Laboratory, Department of Oncology, Luxembourg Institute of Health, L-1526 Luxembourg, Luxembourg.
Shafiq U AhmedInstitute of Cancer Sciences, University of Glasgow, Glasgow G12 8QQ, UK.
Fred FackNorLux Neuro-Oncology Laboratory, Department of Oncology, Luxembourg Institute of Health, L-1526 Luxembourg, Luxembourg.
Olivier KeunenNorLux Neuro-Oncology Laboratory, Department of Oncology, Luxembourg Institute of Health, L-1526 Luxembourg, Luxembourg.
Liang ZhengCancer Metabolism Research Unit, Cancer Research UK, Beatson Institute, Switchback Road, Glasgow G61 1BD, UK.
Hrvoje MileticKristian Gerhard Jebsen Brain Tumour Research Center, Department of Biomedicine, University of Bergen, Bergen N-5009, Norway.
Per Øystein SakariassenKristian Gerhard Jebsen Brain Tumour Research Center, Department of Biomedicine, University of Bergen, Bergen N-5009, Norway.
Adam WeinstockThe Blavatnik School of Computer Science, Tel Aviv University, Tel Aviv 69978, Israel.
Allon WagnerThe Blavatnik School of Computer Science, Tel Aviv University, Tel Aviv 69978, Israel.
Susan L LindsayInstitute of Infection, Immunity and inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow G12 8TA, UK.
Andreas K HockCancer Metabolism Research Unit, Cancer Research UK, Beatson Institute, Switchback Road, Glasgow G61 1BD, UK.
Susan C BarnettInstitute of Infection, Immunity and inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow G12 8TA, UK.
Eytan RuppinThe Blavatnik School of Computer Science, Tel Aviv University, Tel Aviv 69978, Israel.
Svein Harald MørkveDepartment of Neurosurgery, Haukeland University Hospital, Bergen N-5021, Norway.
Morten Lund-JohansenDepartment of Neurosurgery, Haukeland University Hospital, Bergen N-5021, Norway.
Anthony J ChalmersInstitute of Cancer Sciences, University of Glasgow, Glasgow G12 8QQ, UK.
Rolf BjerkvigNorLux Neuro-Oncology Laboratory, Department of Oncology, Luxembourg Institute of Health, L-1526 Luxembourg, Luxembourg.
Simone P NiclouNorLux Neuro-Oncology Laboratory, Department of Oncology, Luxembourg Institute of Health, L-1526 Luxembourg, Luxembourg.
Eyal GottliebCancer Metabolism Research Unit, Cancer Research UK, Beatson Institute, Switchback Road, Glasgow G61 1BD, UK.

Funding

Cancer Research UK 18274Cancer Research UK 18278Cancer Research UK A12477Cancer Research UK A18278Medical Research Council G0802755
6 · The paper itself

Abstract

L-Glutamine (Gln) functions physiologically to balance the carbon and nitrogen requirements of tissues. It has been proposed that in cancer cells undergoing aerobic glycolysis, accelerated anabolism is sustained by Gln-derived carbons, which replenish the tricarboxylic acid (TCA) cycle (anaplerosis). However, it is shown here that in glioblastoma (GBM) cells, almost half of the Gln-derived glutamate (Glu) is secreted and does not enter the TCA cycle, and that inhibiting glutaminolysis does not affect cell proliferation. Moreover, Gln-starved cells are not rescued by TCA cycle replenishment. Instead, the conversion of Glu to Gln by glutamine synthetase (GS; cataplerosis) confers Gln prototrophy, and fuels de novo purine biosynthesis. In both orthotopic GBM models and in patients, (13)C-glucose tracing showed that GS produces Gln from TCA-cycle-derived carbons. Finally, the Gln required for the growth of GBM tumours is contributed only marginally by the circulation, and is mainly either autonomously synthesized by GS-positive glioma cells, or supplied by astrocytes.

Indexed as

Cell ProliferationAnimalsAstrocytesBlotting, WesternBrain NeoplasmsCell Line, TumorCells, CulturedCitric Acid CycleCoculture TechniquesFemaleGlioblastomaGlutamate-Ammonia LigaseGlutamic AcidGlutamineHumansMaleGlutamate-Ammonia LigaseGlutamic AcidGlutamineNucleotides

Identifiers

PMID26595383
PMCPMC4663685

What OpenQuestion holds

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.