Evidence map›Paper›PMID 18566746›Full record

ArticleJournal of neuro-oncology2008

Lovastatin enhances gefitinib activity in glioblastoma cells irrespective of EGFRvIII and PTEN status.

Catia Cemeus, Tong T Zhao, Gordon M Barrett, Ian A Lorimer, Jim Dimitroulakos

Abstract read
PubMed Publisher
In one paragraph

Article in Journal of neuro-oncology, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed, 2 pooled it
2.1field-weighted citation impact, top 11% 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, 2 syntheses or guidelines pooled it, 62 citations in OpenAlex.

  1. Pooled it
  2. The role of statins in neurosurgery.Neurosurgical review · 2010
    Pooled it
  3. Article
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  7. Pitavastatin Is a Highly Potent Inhibitor of T-Cell Proliferation.Pharmaceuticals (Basel, Switzerland) · 2021
    Article
  8. Review
  9. Pleiotropic effects of statins: A focus on cancer.Biochimica et biophysica acta. Molecular basis of disease · 2020
    Review
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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

5 authors at 2 institutions in 1 country.

Catia CemeusCentre for Cancer Therapeutics, The Ottawa Health Research Institute and Ottawa Regional Cancer Centre, 503 Smyth Road, Third Floor, Ottawa, ON, Canada, K1H 1C4.
Tong T Zhao
Gordon M Barrett
Ian A Lorimer
Jim Dimitroulakos
Ottawa Regional Cancer Foundation · CAUniversity of Ottawa · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The epidermal growth factor receptor (EGFR) is commonly amplified and mutated in glioblastoma, making it a compelling therapeutic target. Recent reports have demonstrated clinical activity of the EGFR inhibitors gefitinib and erlotinib in a subset of glioblastoma patients. Co-expression of EGFRvIII, a constitutively active mutant receptor expressed in 50% of tumours, and PTEN, an inhibitor of PI3K activity, by glioblastoma cells is associated with clinical response to these EGFR kinase inhibitors. PTEN loss and resulting increased PI3K pathway activity appears to act as a resistance factor. A critical therapeutic challenge is to identify agents that enhance the anti-cancer effects of these agents and promote responsiveness to EGFR kinase inhibitors in a broader spectrum of glioblastoma patients. For example, combining gefitinib with inhibitors of the PI3K/AKT pathway show enhanced cytotoxicity in glioblastoma derived cell lines. Here, we show that targeting HMG-CoA reductase with lovastatin, that can affect the activity of multiple cell signaling pathways, significantly enhanced the sensitivity of glioblastoma cells to the EGFR kinase inhibitor gefitinib in the five cell lines tested. In an isogenic model system, U87MG glioblastoma cells expressing EGFRvIII and PTEN in relevant combinations, we show that combined gefitinib and lovastatin treatments induce potent synergistic cytotoxicity irrespective of EGFRvIII and PTEN status. These studies demonstrate the potential of lovastatin to augment the cytotoxic effects of gefitinib and provide a rationale for combined statin/EGFR targeted therapies in glioblastoma patients.

Indexed as

Antineoplastic Combined Chemotherapy ProtocolsBlotting, WesternBrain NeoplasmsCell Line, TumorDrug Resistance, NeoplasmErbB ReceptorsFlow CytometryGefitinibGlioblastomaHumansHydroxymethylglutaryl-CoA Reductase InhibitorsLovastatinPTEN PhosphohydrolaseQuinazolinesepidermal growth factor receptor VIIIErbB ReceptorsGefitinibHydroxymethylglutaryl-CoA Reductase InhibitorsLovastatinPTEN PhosphohydrolasePTEN protein, humanQuinazolines

Identifiers

PMID18566746
OpenAlexW2031524172

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.