Evidence map›Paper›PMID 25568669›Full record

ArticleGenes & cancer2014

The Bcl-2 inhibitor Obatoclax overcomes resistance to histone deacetylase inhibitors SAHA and LBH589 as radiosensitizers in patient-derived glioblastoma stem-like cells.

Lotte M E Berghauser Pont, Jochem K H Spoor, Subramanian Venkatesan, Sigrid Swagemakers, Jenneke J Kloezeman, Clemens M F Dirven, Peter J van der Spek, Martine L M Lamfers, Sieger Leenstra

Open access · diamondAbstract read
In one paragraph

Article in Genes & cancer, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
1.7field-weighted citation impact, top 17% 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

25 citing papers in PubMed, 36 citations in OpenAlex.

  1. Article
  2. Review
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  8. BH3-mimetics: recent developments in cancer therapy.Journal of experimental & clinical cancer research : CR · 2021
    Review
  9. Review
  10. miR-29b-3p Increases Radiosensitivity in Stemness Cancer CellsFrontiers in cell and developmental biology · 2021
    Article
  11. Article
  12. Review
  13. Review
  14. Review
  15. BCL-XCell death & disease · 2017
    Article
  16. Article
  17. Article
  18. Review
  19. Article
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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 3 institutions in 1 country.

Lotte M E Berghauser PontDepartment of Neurosurgery, Brain Tumor Center, Erasmus MC, Rotterdam, The Netherlands.
Jochem K H SpoorDepartment of Neurosurgery, Brain Tumor Center, Erasmus MC, Rotterdam, The Netherlands.
Subramanian VenkatesanDepartment of Neurosurgery, Brain Tumor Center, Erasmus MC, Rotterdam, The Netherlands.
Sigrid SwagemakersDepartment of Bio-informatics, Erasmus MC, Rotterdam, The Netherlands.
Jenneke J KloezemanDepartment of Neurosurgery, Brain Tumor Center, Erasmus MC, Rotterdam, The Netherlands.
Clemens M F DirvenDepartment of Neurosurgery, Brain Tumor Center, Erasmus MC, Rotterdam, The Netherlands.
Peter J van der SpekDepartment of Bio-informatics, Erasmus MC, Rotterdam, The Netherlands.
Martine L M LamfersDepartment of Neurosurgery, Brain Tumor Center, Erasmus MC, Rotterdam, The Netherlands.
Sieger LeenstraDepartment of Neurosurgery, Brain Tumor Center, Erasmus MC, Rotterdam, The Netherlands ; Department of Neurosurgery, Elisabeth Medical Hospital, Tilburg, The Netherlands.
Erasmus MC Cancer Institute · NLErasmus MC · NLErasmus University Rotterdam · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Glioblastoma has shown resistance to histone deacetylase inhibitors (HDACi) as radiosensitizers in cultures with Bcl-XL over-expression. We study the efficacy of SAHA/RTx and LBH589/RTx when manipulating Bcl-2 family proteins using the Bcl-2 inhibitor Obatoclax in patient-derived glioblastoma stem-like cell (GSC) cultures. GSC cultures in general have a deletion in phosphatase and tensin homolog (PTEN). Synergy was determined by the Chou Talalay method. The effects on apoptosis and autophagy were studied by measuring caspase-3/7, Bcl-XL, Mcl-1 and LC3BI/II proteins. The relation between treatment response and O6-methylguanine-DNA methyltransferase (MGMT) promoter methylation status, recurrence and gene expression levels of the tumors were studied. Obatoclax synergized with SAHA and LBH589 and sensitized cells to HDACi/RTx. Over 50% of GSC cultures were responsive to Obatoclax with either single agent. Combined with HDACi/RTx treatment, Obatoclax increased caspase-3/7 and inhibited Bcl-2 family proteins Bcl-XL and Mcl-1 more effectively than other treatments. Genes predictive for treatment response were identified, including the F-box/WD repeat-containing protein-7, which was previously related to Bcl-2 inhibition and HDACi sensitivity. We emphasize the functional relation between Bcl-2 proteins and radiosensitization by HDACi and provide a target for increasing responsiveness in glioblastoma by using the Bcl-2 inhibitor Obatoclax.

Indexed as

Bcl-2Bcl-XLHDAC inhibitorLBH589ObatoclaxradiationSAHA

Identifiers

PMID25568669
PMCPMC4279441
OpenAlexW2188456219

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

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.