Evidence map›Paper›PMID 23787764›Full record

ArticleNeuro-oncology2013

Implications of Dll4-Notch signaling activation in primary glioblastoma multiforme.

Nicolai El Hindy, Kathy Keyvani, Axel Pagenstecher, Philip Dammann, I Erol Sandalcioglu, Ulrich Sure, Yuan Zhu

Open access · bronzeAbstract readComparative Study
In one paragraph

Article in Neuro-oncology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed, 1 pooled it
2.2field-weighted citation impact, top 13% 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

33 citing papers in PubMed, 1 synthesis or guideline pooled it, 61 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Review
  4. Review
  5. Review
  6. Review
  7. Practical immunomodulatory landscape of glioblastoma multiforme (GBM) therapy.Journal of the Egyptian National Cancer Institute · 2024
    Review
  8. Article
  9. Aging · 2024
    Article
  10. Review
  11. Review
  12. Article
  13. Notch signaling, hypoxia, and cancer.Frontiers in oncology · 2023
    Review
  14. Article
  15. Review
  16. Article
  17. Article
  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

7 authors at 1 institution in 1 country.

Nicolai El HindyCorresponding Author: Dr. Yuan Zhu, PhD, Department of Neurosurgery, University of Duisburg-Essen, Hufelandstraße 55, 45122 Essen, Germany. yuan.zhu@uk-essen.de.
Kathy Keyvani
Axel Pagenstecher
Philip Dammann
I Erol Sandalcioglu
Ulrich Sure
Yuan Zhu
University of Duisburg-Essen · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundGlioblastoma multiforme (GBM) is a highly aggressive brain tumor characterized by massive neovascularization, necrosis, and intense resistance to therapy. Deregulated Notch signaling has been implicated in the formation and progression of different malignancies. The present study attempted to investigate the activation status of Dll4-Notch signaling in primary human GBM and its association with vascular and clinical parameters in patients.

methodsMajor components of Dll4-Notch signaling were examined by real-time reverse-transcription polymerase chain reaction (PCR), Western blotting, and immunohistochemistry in GBM (n = 26) and control (n = 11) brain tissue. The vascular pattern (VP) and microvascular density (MVD) were analyzed after laminin immunostaining. O6-Methylguanine-methyltransferase (MGMT) promoter methylation in GBM samples was detected by methylation-specific PCR.

resultsThe mRNA levels of Dll4, Jagged1, Notch1, Notch4, Hey1, Hey2, Hes1, and VEGF were 3.12-, 3.58-, 3.37-, 5.77-, 4.89-, 3.13-, 6.62-, and 32.57-fold elevated, respectively, in GBM samples, compared with the controls. Western blotting revealed a 4-, 3.7-, and 45.6-fold upregulation of Dll4, Notch1, and Hey1, respectively, accompanied by a downregulation of PTEN expression and an increase in the expression of p-Akt and VEGF. Immunostaining located the immunoreactivity of Dll4 and Notch1 in endothelial cells, microglia/macrophages, tumor cells, and astrocytes. Furthermore, the upregulation of Dll4-Notch signaling components was correlated to a low MVD and was potentially related to a classic VP, tumor edema, and MGMT promoter methylation.

conclusionsThe upregulation of Dll4-Notch signaling components was found in a subset of GBM samples and was associated with some angiogenic and clinical parameters. These findings highlight this signaling pathway as a potential therapeutic target for patients with GBM who show an activation of Dll4-Notch signaling.

Indexed as

Neovascularization, PathologicSignal TransductionAdaptor Proteins, Signal TransducingAdultAgedApoptosisBlotting, WesternBrain NeoplasmsCalcium-Binding ProteinsCase-Control StudiesCell ProliferationDNA MethylationDNA Modification MethylasesDNA Repair EnzymesFemaleFluorescent Antibody TechniqueAdaptor Proteins, Signal TransducingCalcium-Binding ProteinsDLL4 protein, humanDNA Modification MethylasesDNA Repair EnzymesIntercellular Signaling Peptides and ProteinsMGMT protein, humanNOTCH1 protein, humanReceptor, Notch1RNA, MessengerTumor Suppressor ProteinsDll4-Notch signalingmacrophage/microgliamicrovascular densityprimary glioblastoma multiformevascular pattern

Identifiers

PMID23787764
PMCPMC3779034
OpenAlexW2117957337

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.