Evidence map›Paper›PMID 21936894›Full record

ArticleJournal of translational medicine2011

Promoter methylation and downregulation of SLC22A18 are associated with the development and progression of human glioma.

Sheng-Hua Chu, Dong-Fu Feng, Yan-Bin Ma, Hong Zhang, Zhi-An Zhu, Zhi-Qiang Li, Pu-Cha Jiang

Open access · goldAbstract read
In one paragraph

Article in Journal of translational medicine, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
2.1field-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

24 citing papers in PubMed, 38 citations in OpenAlex.

  1. Article
  2. Article
  3. The Roles of ImprintedCancers · 2020
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  4. Article
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  6. Potential Epigenetic-Based Therapeutic Targets for Glioma.Frontiers in molecular neuroscience · 2018
    Review
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  9. Expression and prognostic value of the aldehyde dehydrogenase 1 (ALDH1) and N-myc downstream regulated gene 2 (NDRG2) as potential markers in human astrocytomas.Tumour biology : the journal of the International Society for Oncodevelopmental Biology and Medicine · 2016
    Article
  10. Review
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  19. DNA methylation as an adjunct to histopathology to detect prevalent, inconspicuous dysplasia and early-stage neoplasia in Barrett's esophagus.Clinical cancer research : an official journal of the American Association for Cancer Research · 2013
    Article
  20. 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

7 authors at 2 institutions in 1 country.

Sheng-Hua ChuDepartment of Neurosurgery, NO.3 People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 201900, China. shenghuachu@126.com
Dong-Fu Feng
Yan-Bin Ma
Hong Zhang
Zhi-An Zhu
Zhi-Qiang Li
Pu-Cha Jiang
Shanghai Jiao Tong University · CNZhongnan Hospital of Wuhan University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundDownregulation of the putative tumor suppressor gene SLC22A18 has been reported in a number of human cancers. The aim of this study was to investigate the relationship between SLC22A18 downregulation, promoter methylation and the development and progression of human glioma.

methodSLC22A18 expression and promoter methylation was examined in human gliomas and the adjacent normal tissues. U251 glioma cells stably overexpressing SLC22A18 were generated to investigate the effect of SLC22A18 on cell growth and adherence in vitro using the methyl thiazole tetrazolium assay. Apoptosis was quantified using flow cytometry and the growth of SLC22A18 overexpressing U251 cells was measured in an in vivo xenograft model.

resultsSLC22A18 protein expression is significantly decreased in human gliomas compared to the adjacent normal brain tissues. SLC22A18 protein expression is significantly lower in gliomas which recurred within six months after surgery than gliomas which did not recur within six months. SLC22A18 promoter methylation was detected in 50% of the gliomas, but not in the adjacent normal tissues of any patient. SLC22A18 expression was significantly decreased in gliomas with SLC22A18 promoter methylation, compared to gliomas without methylation. The SLC22A18 promoter is methylated in U251 cells and treatment with the demethylating agent 5-aza-2-deoxycytidine increased SLC22A18 expression and reduced cell proliferation. Stable overexpression of SLC22A18 inhibited growth and adherence, induced apoptosis in vitro and reduced in vivo tumor growth of U251 cells.

conclusionSLC22A18 downregulation via promoter methylation is associated with the development and progression of glioma, suggesting that SLC22A18 is an important tumor suppressor in glioma.

Indexed as

Disease ProgressionPromoter Regions, GeneticAnimalsAstrocytesAzacitidineBlotting, WesternBrainCell AdhesionCell DeathCell Line, TumorCell ProliferationDNA MethylationDown-RegulationGene Expression Regulation, NeoplasticGliomaHumansAzacitidineOrganic Cation Transport ProteinsRNA, MessengerSLC22A18 protein, human

Identifiers

PMID21936894
PMCPMC3184631
OpenAlexW2130370322

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LicenceCC BY
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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.