Evidence map›Paper›PMID 20224967›Full record

ArticleJournal of cancer research and clinical oncology2010

Targeting PI3K in neuroblastoma.

Volker Spitzenberg, Christian König, Susanne Ulm, Romina Marone, Luise Röpke, Jörg P Müller, Michael Grün, Reinhard Bauer, Ignacio Rubio, Matthias Paul Wymann and 2 more

Open access · greenAbstract read
In one paragraph

Article in Journal of cancer research and clinical oncology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
1.3field-weighted citation impact, top 20% 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

9 citing papers in PubMed, 21 citations in OpenAlex.

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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

12 authors at 2 institutions in 2 countries.

Volker SpitzenbergDepartment of Molecular Cell Biology, Center for Molecular Biomedicine, Jena University Hospital, Hans-Knöll-Strasse 2, Jena 07745, Germany.
Christian König
Susanne Ulm
Romina Marone
Luise Röpke
Jörg P Müller
Michael Grün
Reinhard Bauer
Ignacio Rubio
Matthias Paul Wymann
Astrid Voigt
Reinhard Wetzker
Jena University Hospital · DEUniversity of Basel · CH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThis work employs pharmacological targeting of phosphoinositide 3-kinases (PI3K) in selected neuroblastoma (NB) tumors with the inhibitor AS605240, which has been shown to express low toxicity and relative specificity for the PI3K species γ.

methodsThe expression pattern of PI3K isoforms in 7 NB cell lines and 14 tumor patient samples was determined by Western blotting and immunocytochemistry. The effect of AS605240 on the growth of four selected tumor cell lines was assessed. Two cell lines exhibiting (SK-N-LO) or lacking (SK-N-AS) PI3Kγ expression were chosen for further in vitro analysis, which involved propidium iodide (PI)-based cell cycle staining, terminal deoxynucleotidyl transferase-mediated dUTP-biotin nick end labeling (TUNEL-staining) of apoptotic cells and analysis of PI3K/Akt-related signaling pathways via Western blotting and translocation experiments. The action of AS605240 in vivo was addressed by xenograft experiments in severe combined immunodeficiency (SCID) mice, thereby comparing SK-N-LO and SK-N-AS derived tumors. Apoptosis induced in SK-N-LO tumors was shown by immunohistochemical TUNEL-staining.

resultsSignificant expression of PI3Kγ in neuroblastoma patient biopsies and tumor cell lines was detected. AS605240 induced apoptosis in NB cell lines proportional to this expression and suppressed growth of PI3Kγ positive, but not negative, tumors in a xenograft mouse model. No adverse effects of the inhibitor treatment were observed.

conclusionsOur observations hint to an oncogenic function of PI3Kγ in distinct neuroblastoma entities and reveal PI3K targeting by AS605240 as a promising molecular therapy of these tumors.

Indexed as

Phosphoinositide-3 Kinase InhibitorsAnimalsApoptosisBlotting, WesternCell CycleCell Line, TumorCell ProliferationCell SurvivalDose-Response Relationship, DrugFemaleHumansImmunohistochemistryIn Situ Nick-End LabelingMiceMice, SCIDNeuroblastoma5-quinoxalin-6-ylmethylenethiazolidine-2,4-dionePhosphatidylinositol 3-KinasePhosphoinositide-3 Kinase InhibitorsProto-Oncogene Proteins c-aktQuinoxalinesThiazolidinediones

Identifiers

PMID20224967
PMCPMC11827818
OpenAlexW1969813757

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.