Evidence map›Paper›PMID 25232498›Full record

ArticleAmerican journal of cancer research2014

Olea europaea leaf extract improves the treatment response of GBM stem cells by modulating miRNA expression.

Gulcin Tezcan, Berrin Tunca, Ahmet Bekar, Ferah Budak, Saliha Sahin, Gulsah Cecener, Unal Egeli, Mevlut Ozgur Taskapılıoglu, Hasan Kocaeli, Sahsine Tolunay and 3 more

Open access · greenAbstract read
In one paragraph

Article in American journal of cancer research, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 2 pooled it
1.6field-weighted citation impact, top 18% 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

19 citing papers in PubMed, 2 syntheses or guidelines pooled it, 32 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Review
  4. Article
  5. Article
  6. Turkish journal of pharmaceutical sciences · 2023
    Article
  7. Life (Basel, Switzerland) · 2023
    Article
  8. Review
  9. Article
  10. Article
  11. Therapeutic potential of natural products in glioblastoma treatment: targeting key glioblastoma signaling pathways and epigenetic alterations.Clinical & translational oncology : official publication of the Federation of Spanish Oncology Societies and of the National Cancer Institute of Mexico · 2020
    Review
  12. Oleuropein, a Bioactive Compound fromAntioxidants (Basel, Switzerland) · 2019
    Review
  13. Article
  14. Review
  15. Emerging targets for glioblastoma stem cell therapy.Journal of biomedical research · 2016
    Article
  16. Article
  17. Review
  18. Article
  19. Article
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

13 authors at 2 institutions in 1 country.

Gulcin TezcanDepartment of Medical Biology, Medical Faculty, Uludag University Bursa, Turkey.
Berrin TuncaDepartment of Medical Biology, Medical Faculty, Uludag University Bursa, Turkey.
Ahmet BekarDepartment of Neurosurgery, Medical Faculty, Uludag University Bursa, Turkey.
Ferah BudakDepartment of Microbiology, Medical Faculty, Uludag University Bursa, Turkey.
Saliha SahinDepartment of Chemistry, Science Faculty, Uludag University Bursa, Turkey.
Gulsah CecenerDepartment of Medical Biology, Medical Faculty, Uludag University Bursa, Turkey.
Unal EgeliDepartment of Medical Biology, Medical Faculty, Uludag University Bursa, Turkey.
Mevlut Ozgur TaskapılıogluDepartment of Neurosurgery, Medical Faculty, Uludag University Bursa, Turkey.
Hasan KocaeliDepartment of Neurosurgery, Medical Faculty, Uludag University Bursa, Turkey.
Sahsine TolunayDepartment of Pathology, Medical Faculty, Uludag University Bursa, Turkey.
Hulusi MalyerDepartment of Biology, Science Faculty, Uludag University Bursa, Turkey.
Cevdet DemirDepartment of Chemistry, Science Faculty, Uludag University Bursa, Turkey.
Gulendam TumenDepartment of Biology, Science Faculty, Balikesir University Balikesir, Turkey.
Bursa Uludağ Üni̇versi̇tesi̇ · TRBalıkesir University · TR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The stem-like cells of Glioblastoma multiforme (GBM) tumors (GSCs) are one of the important determinants of recurrence and drug resistance. The aims of the current study were to evaluate the anticancer effect of Olea europaea leaf extract (OLE) on GBM cell lines, the association between OLE and TMZ responses, and the effect of OLE and the OLE-TMZ combination in GSCs and to clarify the molecular mechanism of this effect on the expression of miRNAs related to cell death. The anti-proliferative activity of OLE and the effect of the OLE-TMZ combination were tested in the T98G, U-138MG and U-87MG GBM cell lines using WST-1 assay. The mechanism of cell death was analyzed with Annexin V/FITC and TUNEL assays. The effects of OLE on the expression levels of miR-181b, miR-153, miR-145 and miR-137 and potential mRNA targets were analyzed in GSCs using RT-qPCR. OLE exhibited anti-proliferative effects via apoptosis and necrosis in the GBM cell lines. In addition, OLE significantly induced the expression of miR-153, miR-145, and miR-137 and decreased the expression of the target genes of these miRNAs in GSCs (p < 0.05). OLE causes cell death in GBM cells with different TMZ responses, and this effect is synergistically increased when the cells are treated with a combination of OLE and TMZ. This is the first study to indicate that OLE may interfere with the pluripotency of GSCs by modulating miRNA expression. Further studies are required, but we suggest that OLE may have a potential for advanced therapeutic cancer drug studies in GBM.

Indexed as

cancer stem cellglioblastoma multiformeMicroRNAOlea europaea leaf extracttemozolomide

Identifiers

PMID25232498
PMCPMC4163621
OpenAlexW101732103

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.