Evidence map›Paper›PMID 26518290›Full record

ArticleCancer medicine2015

Coculture with astrocytes reduces the radiosensitivity of glioblastoma stem-like cells and identifies additional targets for radiosensitization.

Barbara H Rath, Amy Wahba, Kevin Camphausen, Philip J Tofilon

Open access · goldAbstract read
In one paragraph

Article in Cancer medicine, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed, 1 pooled it
3.1field-weighted citation impact, top 8% 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

29 citing papers in PubMed, 1 synthesis or guideline pooled it, 48 citations in OpenAlex.

  1. Bridging Radiotherapy to Immunotherapy: The IFN-JAK-STAT Axis.International journal of molecular sciences · 2021
    Pooled it
  2. Cell death in glioblastoma and the central nervous system.Cellular oncology (Dordrecht, Netherlands) · 2025
    Review
  3. Article
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  5. Review
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  8. Article
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  13. Article
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  15. Insights in the immunobiology of glioblastoma.Journal of molecular medicine (Berlin, Germany) · 2020
    Review
  16. Article
  17. Targeting Glioblastoma Tumor Microenvironment.Advances in experimental medicine and biology · 2020
    Review
  18. Article
  19. Article
  20. Review
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

4 authors at 1 institution in 1 country.

Barbara H RathRadiation Oncology Branch, National Cancer Institute, Bethesda, Maryland, 20892.
Amy WahbaRadiation Oncology Branch, National Cancer Institute, Bethesda, Maryland, 20892.
Kevin CamphausenRadiation Oncology Branch, National Cancer Institute, Bethesda, Maryland, 20892.
Philip J TofilonRadiation Oncology Branch, National Cancer Institute, Bethesda, Maryland, 20892.
National Cancer Institute · US

Funding

Microenvironmental regulation of glioblastoma radiosensitivityZIABC011372 · NCI · DIVISION OF BASIC SCIENCES - NCI · PI TOFILON, PHILIP · 2011 to 2025
$11.7M
Intramural NIH HHS
6 · The paper itself

Abstract

Toward developing a model system for investigating the role of the microenvironment in the radioresistance of glioblastoma (GBM), human glioblastoma stem-like cells (GSCs) were grown in coculture with human astrocytes. Using a trans-well assay, survival analyses showed that astrocytes significantly decreased the radiosensitivity of GSCs compared to standard culture conditions. In addition, when irradiated in coculture, the initial level of radiation-induced γH2AX foci in GSCs was reduced and foci dispersal was enhanced suggesting that the presence of astrocytes influenced the induction and repair of DNA double-strand breaks. These data indicate that astrocytes can decrease the radiosensitivity of GSCs in vitro via a paracrine-based mechanism and further support a role for the microenvironment as a determinant of GBM radioresponse. Chemokine profiling of coculture media identified a number of bioactive molecules not present under standard culture conditions. The gene expression profiles of GSCs grown in coculture were significantly different as compared to GSCs grown alone. These analyses were consistent with an astrocyte-mediated modification in GSC phenotype and, moreover, suggested a number of potential targets for GSC radiosensitization that were unique to coculture conditions. Along these lines, STAT3 was activated in GSCs grown with astrocytes; the JAK/STAT3 inhibitor WP1066 enhanced the radiosensitivity of GSCs under coculture conditions and when grown as orthotopic xenografts. Further, this coculture system may also provide an approach for identifying additional targets for GBM radiosensitization.

Indexed as

Radiation ToleranceAnimalsAstrocytesBrain NeoplasmsCell Line, TumorCluster AnalysisCoculture TechniquesCytokinesDisease Models, AnimalDose-Response Relationship, RadiationFemaleGene Expression ProfilingGlioblastomaHistonesHumansMiceCytokinesHistonesSTAT3 Transcription FactorAstrocytesglioblastoma stem-like cellsmicroenvironmentradiosensitizationSTAT3

Identifiers

PMID26518290
PMCPMC4673998
OpenAlexW1850978620

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.