Evidence map›Paper›PMID 26431379›Full record

ArticleOncotarget2015

Metformin and temozolomide act synergistically to inhibit growth of glioma cells and glioma stem cells in vitro and in vivo.

Zhiyun Yu, Gang Zhao, Guifang Xie, Liyan Zhao, Yong Chen, Hongquan Yu, Zhonghua Zhang, Cai Li, Yunqian Li

Open access · diamondAbstract read
In one paragraph

Article in Oncotarget, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 62 papers.

0numbers the graph read from it
0cells of the map it votes in
62citing papers in PubMed
6.6field-weighted citation impact, top 3% 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

62 citing papers in PubMed, 101 citations in OpenAlex.

  1. Review
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  11. Glioblastoma Metabolism: Insights and Therapeutic Strategies.International journal of molecular sciences · 2023
    Review
  12. Ion Channels in Gliomas-From Molecular Basis to Treatment.International journal of molecular sciences · 2023
    Review
  13. Review
  14. Article
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2 more citing papers are in PubMed but not listed here.

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

9 authors at 3 institutions in 1 country.

Zhiyun YuDepartment of Neurosurgery, First Hospital of Jilin University, Changchun, China.
Gang ZhaoDepartment of Neurosurgery, First Hospital of Jilin University, Changchun, China.
Guifang XieDepartment of Obstetrics and Gynecology, First Hospital of Jilin University, Changchun, China.
Liyan ZhaoDepartment of Clinical Laboratory, Second Hospital of Jilin University, Changchun, China.
Yong ChenDepartment of Neurosurgery, First Hospital of Jilin University, Changchun, China.
Hongquan YuDepartment of Neurosurgery, First Hospital of Jilin University, Changchun, China.
Zhonghua ZhangDepartment of Neurosurgery, First Hospital of Jilin University, Changchun, China.
Cai LiDepartment of Experimental Pharmacology and Toxicology, School of Pharmacy, Jilin University, Changchun, China.
Yunqian LiDepartment of Neurosurgery, First Hospital of Jilin University, Changchun, China.
Jilin University · CNFirst Hospital of Jilin University · CNSecond Affiliated Hospital of Jilin University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Glioblastoma (GBM) is the most frequent and aggressive brain tumor in adults. In spite of advances in diagnosis and therapy, the prognosis of patients with GBM has remained dismal. The fast recurrence and multi-drug resistance are some of the key challenges in combating brain tumors. Glioma stem cells (GSCs) which are considered the source of relapse and chemoresistance, the need for more effective therapeutic options is overwhelming. In our present work, we found that combined treatment with temozolomide (TMZ) and metformin (MET) synergistically inhibited proliferation and induced apoptosis in both glioma cells and GSCs. Combination of TMZ and MET significantly reduced the secondary gliosphere formation and expansion of GSCs. We first demonstrated that MET effectively inhibited the AKT activation induced by TMZ, and a combination of both drugs led to enhanced reduction of mTOR, 4EBP1 and S6K phosphorylation. In addition, the combination of the two drugs was accompanied with a powerful AMP-activated protein kinase (AMPK) activation, while this pathway is not determinant. Xenografts performed in nude mice demonstrate in vivo demonstrated that combined treatment significantly reduced tumor growth rates and prolonged median survival of tumor-bearing mice. In conclusion, TMZ in combination with MET synergistically inhibits the GSCs proliferation through downregulation of AKT-mTOR signaling pathway. The combined treatment of two drugs inhibits GSCs self-renewal capability and partly eliminates GSCs in vitro and in vivo. This combined treatment could be a promising option for patients with advanced GBM.

Indexed as

AnimalsAntineoplastic Combined Chemotherapy ProtocolsBrain NeoplasmsCell DifferentiationCell Line, TumorCell ProliferationDacarbazineDrug SynergismGlioblastomaHumansMaleMetforminMiceMice, SCIDNeoplastic Stem CellsRandom AllocationDacarbazineMetforminTemozolomideAKT-mTORAMPKglioma stem cellmetformintemozolomide

Identifiers

PMID26431379
PMCPMC4741740
OpenAlexW1836950607

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.