Evidence map›Paper›PMID 16351731›Full record

ArticleMolecular cancer2005

Metallothionien 3 expression is frequently down-regulated in oesophageal squamous cell carcinoma by DNA methylation.

Eric Smith, Paul A Drew, Zi-Qing Tian, Neville J De Young, Jun-Feng Liu, George C Mayne, Andrew R Ruszkiewicz, David I Watson, Glyn G Jamieson

Open access · goldAbstract read
In one paragraph

Article in Molecular cancer, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
0.6field-weighted citation impact, top 33% 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

25 citing papers in PubMed, 41 citations in OpenAlex.

  1. Review
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  6. The roles of metallothioneins in carcinogenesis.Journal of hematology & oncology · 2018
    Review
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  8. BioMed research international · 2016
    Article
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  15. Review
  16. Propofol exerts hippocampal neuron protective effects via up-regulation of metallothionein-3.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2013
    Article
  17. Review
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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

9 authors at 5 institutions in 2 countries.

Eric SmithDepartment of Surgery, The University of Adelaide, Royal Adelaide Hospital, Adelaide, South Australia, 5005, Australia. eric.smith@adelaide.edu.au
Paul A Drew
Zi-Qing Tian
Neville J De Young
Jun-Feng Liu
George C Mayne
Andrew R Ruszkiewicz
David I Watson
Glyn G Jamieson
Flinders University · AURoyal Adelaide Hospital · AUFourth Hospital of Hebei Medical University · CNHebei Medical University · CNSouth Australia Pathology · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundMetallothionein 3 (MT3) inhibits growth in a variety of cell types. We measured MT3 gene expression by RT-PCR, and DNA methylation in the MT3 promoter by combined bisulphite restriction analysis, in four oesophageal cancer cell lines and the resected oesophagus from 64 patients with oesophageal squamous cell carcinoma (SCC).

resultsMT3 expression was not detected in one of the four oesophageal cell lines. The MT3 promoter was methylated in all of the oesophageal cell lines, but the degree of methylation was greater in the non-expressing cell line. After treatment with 5-aza-2'-deoxycytidine there was a reduction in the degree of methylation, and an increase in MT3 expression, in each of the cell lines (p < 0.01). Methylation was detected in 52% (33 of 64) of primary SCC and 3% (2 of 62) of histologically normal resection margins. MT3 expression was measured in 29 tumours, 17 of which had methylation of MT3. The expression of MT3 was significantly less in the methylated tumours compared to either the unmethylated tumours (p = 0.03), or the matched margin (p = 0.0005). There was not a significant difference in MT3 expression between the tumour and the margin from patients with unmethylated tumour. No correlations were observed between methylation of MT3 and survival time, patient age, gender, smoking or drinking history, tumour stage, volume, or lymph node involvement.

conclusionWe conclude that MT3 expression is frequently down-regulated in oesophageal SCC, by DNA methylation, but that this is not a prognostic indicator.

Indexed as

DNA MethylationDown-RegulationGene Expression Regulation, NeoplasticAdultAgedCarcinoma, Squamous CellCell LineEsophageal NeoplasmsFemaleHumansLymphocytesMaleMetallothionein 3Middle AgedNerve Tissue ProteinsPromoter Regions, GeneticMetallothionein 3Nerve Tissue Proteins

Identifiers

PMID16351731
PMCPMC1343579
OpenAlexW2136755058

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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.