Evidence map›Paper›PMID 24366912›Full record

ArticleNeuro-oncology2014

Lactate dehydrogenase A silencing in IDH mutant gliomas.

Charles Chesnelong, Myriam M Chaumeil, Michael D Blough, Mohammad Al-Najjar, Owen D Stechishin, Jennifer A Chan, Russell O Pieper, Sabrina M Ronen, Samuel Weiss, H Artee Luchman and 1 more

Open access · bronzeAbstract read
In one paragraph

Article in Neuro-oncology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 134 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
134citing papers in PubMed, 1 pooled it
5.0field-weighted citation impact, top 4% of its field
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

134 citing papers in PubMed, 1 synthesis or guideline pooled it, 211 citations in OpenAlex.

  1. Pooled it
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  11. Nano-Based Technology in Glioblastoma.Molecules (Basel, Switzerland) · 2025
    Review
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  18. Article
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  20. A negative feedback loop underlies the Warburg effect.NPJ systems biology and applications · 2024
    Article

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

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

11 authors at 3 institutions in 2 countries.

Charles ChesnelongDepartment of Clinical Neurosciences, Foothills Hospital, Calgary, Alberta, Canada (C.C., M.D.B., M.A.-N., J.A.C., S.W., J.G.C.); Department of Cell Biology and Anatomy, Health Research Innovation Centre, Calgary, Alberta, Canada (O.D.S., S.W., H.A.L.); Department of Pathology & Laboratory Medicine, Foothills Hospital, Calgary, Alberta, Canada (J.A.C.); Southern Alberta Cancer Research Institute, Health Research Innovation Centre, Calgary, Alberta, Canada (C.C., M.D.B., M.A.-N., J.A.C., S.W., H.A.L., J.G.C.); Hotchkiss Brain Institute, Health Research Innovation Centre, Calgary, Alberta, Canada (O.D.S., S.W., H.A.L.); Department of Radiology and Biomedical Imaging, San Francisco, California (M.M.C., S.M.R.); Brain Tumor Research Center, Department of Neurological Surgery, San Francisco, California (R.O.P).
Myriam M Chaumeil
Michael D Blough
Mohammad Al-Najjar
Owen D Stechishin
Jennifer A Chan
Russell O Pieper
Sabrina M Ronen
Samuel Weiss
H Artee Luchman
J Gregory Cairncross
Neurological Surgery · USFoothills Medical Centre · CAOntario Brain Institute · CA

Funding

Metabolic Reprogramming in Brain TumorsR01CA172845 · NCI · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI RONEN, SABRINA MIRIAM · 2013 to 2022
$6.3M
NCI NIH HHS R01 CA172845
6 · The paper itself

Abstract

backgroundMutations of the isocitrate dehydrogenase 1 and 2 gene (IDH1/2) were initially thought to enhance cancer cell survival and proliferation by promoting the Warburg effect. However, recent experimental data have shown that production of 2-hydroxyglutarate by IDH mutant cells promotes hypoxia-inducible factor (HIF)1α degradation and, by doing so, may have unexpected metabolic effects.

methodsWe used human glioma tissues and derived brain tumor stem cells (BTSCs) to study the expression of HIF1α target genes in IDH mutant ((mt)) and IDH wild-type ((wt)) tumors. Focusing thereafter on the major glycolytic enzyme, lactate dehydrogenase A (LDHA), we used standard molecular methods and pyrosequencing-based DNA methylation analysis to identify mechanisms by which LDHA expression was regulated in human gliomas.

resultsWe found that HIF1α-responsive genes, including many essential for glycolysis (SLC2A1, PDK1, LDHA, SLC16A3), were underexpressed in IDH(mt) gliomas and/or derived BTSCs. We then demonstrated that LDHA was silenced in IDH(mt) derived BTSCs, including those that did not retain the mutant IDH1 allele (mIDH(wt)), matched BTSC xenografts, and parental glioma tissues. Silencing of LDHA was associated with increased methylation of the LDHA promoter, as was ectopic expression of mutant IDH1 in immortalized human astrocytes. Furthermore, in a search of The Cancer Genome Atlas, we found low expression and high methylation of LDHA in IDH(mt) glioblastomas.

conclusionTo our knowledge, this is the first demonstration of downregulation of LDHA in cancer. Although unexpected findings, silencing of LDHA and downregulation of several other glycolysis essential genes raise the intriguing possibility that IDH(mt) gliomas have limited glycolytic capacity, which may contribute to their slow growth and better prognosis.

Indexed as

Gene Expression Regulation, NeoplasticGene SilencingAnimalsBrain Stem NeoplasmsCell Line, TumorDNA MethylationGlioblastomaGliomaHumansHypoxia-Inducible Factor 1, alpha SubunitIsocitrate DehydrogenaseIsoenzymesLactate Dehydrogenase 5L-Lactate DehydrogenaseMiceMutationHIF1A protein, humanHypoxia-Inducible Factor 1, alpha SubunitIsocitrate DehydrogenaseIsoenzymesLactate Dehydrogenase 5L-Lactate DehydrogenasegliomasglycolysisIDH mutationLDHAmethylation

Identifiers

PMID24366912
PMCPMC3984548
OpenAlexW2101246344

What OpenQuestion holds

Textmetadata
Read underepoch 390

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.