Evidence map›Paper›PMID 29635363›Full record

ArticleNeuro-oncology2018

Sprouty2 enhances the tumorigenic potential of glioblastoma cells.

Jong-Whi Park, Guido Wollmann, Carles Urbiola, Barbara Fogli, Tullio Florio, Stephan Geley, Lars Klimaschewski

Erratum issuedOpen access · hybridAbstract read
In one paragraph

Article in Neuro-oncology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
1.8field-weighted citation impact, top 15% 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, 35 citations in OpenAlex.

  1. Article
  2. Article
  3. Sprouty in Tumors of the Nervous System.International journal of molecular sciences · 2025
    Review
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  18. The MNK1/2-eIF4E Axis as a Potential Therapeutic Target in Melanoma.International journal of molecular sciences · 2020
    Review
  19. Review
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors at 2 institutions in 1 country.

Jong-Whi ParkDivision of Neuroanatomy, Medical University of Innsbruck, Innsbruck, Austria.
Guido WollmannChristian Doppler Laboratory for Viral Immunotherapy of Cancer, Division of Virology, Medical University of Innsbruck, Innsbruck, Austria.
Carles UrbiolaChristian Doppler Laboratory for Viral Immunotherapy of Cancer, Division of Virology, Medical University of Innsbruck, Innsbruck, Austria.
Barbara FogliDivision of Neuroanatomy, Medical University of Innsbruck, Innsbruck, Austria.
Tullio FlorioSection of Pharmacology, Department of Internal Medicine and Center of Excellence for Biomedical Research, University of Genova, Genova, Italy.
Stephan GeleyDivision of Molecular Pathophysiology, Medical University of Innsbruck, Innsbruck, Austria.
Lars KlimaschewskiDivision of Neuroanatomy, Medical University of Innsbruck, Innsbruck, Austria.
Innsbruck Medical University · ATUniversität Innsbruck · AT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background: Sprouty2 (SPRY2), a feedback regulator of receptor tyrosine kinase (RTK) signaling, has been shown to be associated with drug resistance and cell proliferation in glioblastoma (GBM), but the underlying mechanisms are still poorly defined. Methods: SPRY2 expression and survival patterns of patients with gliomas were analyzed using publicly available databases. Effects of RNA interference targeting SPRY2 on cellular proliferation in established GBM or patient-derived GBM stemlike cells were examined. Loss- or gain-of-function of SPRY2 to regulate the tumorigenic capacity was assessed in both intracranial and subcutaneous xenografts. Results: SPRY2 was found to be upregulated in GBM, which correlated with reduced survival in GBM patients. SPRY2 knockdown significantly impaired proliferation of GBM cells but not of normal astrocytes. Silencing of SPRY2 increased epidermal growth factor-induced extracellular signal-regulated kinase (ERK) and Akt activation causing premature onset of DNA replication, increased DNA damage, and impaired proliferation, suggesting that SPRY2 suppresses DNA replication stress. Abrogating SPRY2 function strongly inhibited intracranial tumor growth and led to significantly prolonged survival of U87 xenograft-bearing mice. In contrast, SPRY2 overexpression promoted tumor propagation of low-tumorigenic U251 cells. Conclusions: The present study highlights an antitumoral effect of SPRY2 inhibition that is based on excessive activation of ERK signaling and DNA damage response, resulting in reduced cell proliferation and increased cytotoxicity, proposing SPRY2 as a promising pharmacological target in GBM patients.

Indexed as

Gene Expression Regulation, NeoplasticAnimalsApoptosisBrain NeoplasmsCarcinogenesisCell ProliferationExtracellular Signal-Regulated MAP KinasesFemaleGlioblastomaHumansIntracellular Signaling Peptides and ProteinsMembrane ProteinsMicePrognosisRNA, Small InterferingSignal TransductionExtracellular Signal-Regulated MAP KinasesIntracellular Signaling Peptides and ProteinsMembrane ProteinsRNA, Small InterferingSPRY2 protein, human

Identifiers

PMID29635363
PMCPMC6280149
OpenAlexW2790951993

What OpenQuestion holds

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LicenceCC BY-NC
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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.