Evidence map›Paper›PMID 22837675›Full record

ArticleInternational journal of molecular sciences2012

O6-Methylguanine-methyltransferase (MGMT) promoter methylation status in glioma stem-like cells is correlated to temozolomide sensitivity under differentiation-promoting conditions.

Claire Villalva, Ulrich Cortes, Michel Wager, Jean-Marc Tourani, Pierre Rivet, Celine Marquant, Sebastien Martin, Ali G Turhan, Lucie Karayan-Tapon

Open access · goldAbstract read
In one paragraph

Article in International journal of molecular sciences, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed
2.4field-weighted citation impact, top 12% 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

32 citing papers in PubMed, 53 citations in OpenAlex.

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  20. Glioblastoma-derived cellsBioscience reports · 2017
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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

9 authors at 2 institutions in 1 country.

Claire VillalvaINSERM U935, University of Poitiers, Poitiers F-86021, France.
Ulrich CortesINSERM U935, University of Poitiers, Poitiers F-86021, France.
Michel WagerDepartment of Neurosurgery, University Hospital of Poitiers, University of Poitiers, Poitiers F-86021, France.
Jean-Marc TouraniDepartment of Medical Oncology, University Hospital of Poitiers, University of Poitiers, Poitiers F-86021, France.
Pierre RivetDepartment of Hematology and Oncology, University Hospital of Poitiers, University of Poitiers, Poitiers F-86021, France.
Celine MarquantDepartment of Hematology and Oncology, University Hospital of Poitiers, University of Poitiers, Poitiers F-86021, France.
Sebastien MartinDepartment of Hematology and Oncology, University Hospital of Poitiers, University of Poitiers, Poitiers F-86021, France.
Ali G TurhanINSERM U935, University of Poitiers, Poitiers F-86021, France.
Lucie Karayan-TaponINSERM U935, University of Poitiers, Poitiers F-86021, France.
Université de Poitiers · FRInserm · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Glioblastoma (GBM) is the most malignant type of primary brain tumor with a very poor prognosis. The actual standard protocol of treatment for GBM patients consists of radiotherapy and concomitant temozolomide (TMZ). However, the therapeutic efficacy of this treatment is limited due to tumor recurrence and TMZ resistance. Recently isolated, glioma stem-like cells (GSCs) are thought to represent the population of tumorigenic cells responsible for GBM resistance and recurrence following surgery and chemotherapy. In addition, MGMT (O6-methylguanine-methyltransferase) methylation is considered as one of the principal mechanisms contributing to TMZ sensitivity of GBM. In this study we have isolated GSCs from 10 adult GBM patients and investigated the relationship between MGMT methylation status and Temozolomide (TMZ) sensitivity of these lines grown either in stem-like or differentiation promoting conditions. Sensitivity to TMZ was significantly associated with MGMT methylation status in cells committed to differentiation but not in stem-like cells. In addition, patients harboring highly methylated MGMT promoters had a longer overall survival. These results reveal the importance of the differentiation process when considering the predictive value of MGMT status in GSCs for clinical response to TMZ.

Indexed as

DNA MethylationPromoter Regions, GeneticAgedAlgorithmsBrain NeoplasmsCell DifferentiationCell Line, TumorDacarbazineDNA Modification MethylasesDNA Repair EnzymesFemaleGliomaHumansInhibitory Concentration 50MaleMicroscopy, ConfocalDacarbazineDNA Modification MethylasesDNA Repair EnzymesMGMT protein, humanTemozolomideTumor Suppressor Proteinsdifferentiationglioma stem-like cellsMGMT methylationtemozolomide

Identifiers

PMID22837675
PMCPMC3397507
OpenAlexW1968226383

What OpenQuestion holds

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Registered trials

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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.