Evidence map›Paper›PMID 18793349›Full record

ArticleJournal of cellular and molecular medicine2009

PDCD4 gene silencing in gliomas is associated with 5'CpG island methylation and unfavourable prognosis.

Fei Gao, Xiaoyan Wang, Faliang Zhu, Qun Wang, Xia Zhang, Chun Guo, Chengjun Zhou, Chunhong Ma, Wensheng Sun, Yun Zhang and 2 more

Open access · bronzeAbstract read
In one paragraph

Article in Journal of cellular and molecular medicine, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed, 1 pooled it
1.5field-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

40 citing papers in PubMed, 1 synthesis or guideline pooled it, 67 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Review
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  13. Control Mechanisms of the Tumor Suppressor PDCD4: Expression and Functions.International journal of molecular sciences · 2019
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  17. Article
  18. Relation between microRNAs and Apoptosis in Hepatocellular Carcinoma.Open access Macedonian journal of medical sciences · 2016
    Article
  19. Observational
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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 4 institutions in 2 countries.

Fei GaoDepartment of Immunology, School of Medicine, Shandong University, Jinan, Shandong, China.
Xiaoyan Wang
Faliang Zhu
Qun Wang
Xia Zhang
Chun Guo
Chengjun Zhou
Chunhong Ma
Wensheng Sun
Yun Zhang
Youhai H Chen
Lining Zhang
Shandong University · CNQilu Hospital of Shandong University · CNSecond Hospital of Shandong University · CNUniversity of Pennsylvania · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Programmed cell death 4 (PDCD4) is a newly described tumour suppressor that inhibits oncogenesis by suppressing gene transcription and translation. Loss of PDCD4 expression has been found in several types of human cancers including the most common cancer of the brain, the gliomas. However, the molecular mechanisms responsible for PDCD4 gene silencing in tumour cells remain unclear. Here we report the identification of 5'CpG island methylation as the predominant cause of PDCD4 mRNA silencing in gliomas. The methylation of the PDCD4 5'CpG island was found in 47% (14/30) of glioma tissues, which was significantly associated with the loss of PDCD4 mRNA expression (gamma=-1.000, P < 0.0001). Blocking methylation in glioma cells using a DNA methyltransferase inhibitor, 5-aza-2'-deoxycytidine, restored the PDCD4 gene expression, inhibited their proliferation and reduced their colony formation capacity. Longitudinal studies of a cohort of 84 patients with gliomas revealed that poor prognosis of patients with high-grade tumours were significantly associated with loss of PDCD4 expression. Thus, our current study suggests, for the first time, that PDCD4 5'CpG island methylation blocks PDCD4 expression at mRNA levels in gliomas. These results also indicate that PDCD4 reactivation might be an effective new strategy for the treatment of gliomas.

Indexed as

Gene SilencingAdultApoptosisApoptosis Regulatory ProteinsBase SequenceCell Line, TumorCell ProliferationCpG IslandsDNA MethylationFemaleGene Expression Regulation, NeoplasticGliomaHumansMaleMiddle AgedMolecular Sequence DataApoptosis Regulatory ProteinsPDCD4 protein, humanRNA-Binding ProteinsRNA, Messenger

Identifiers

PMID18793349
PMCPMC4496131
OpenAlexW2094146259

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.