Evidence map›Paper›PMID 19257893›Full record

ArticleBMC medical genomics2009

Promoter methylation correlates with reduced NDRG2 expression in advanced colon tumour.

Ada Piepoli, Rosa Cotugno, Giuseppe Merla, Annamaria Gentile, Bartolomeo Augello, Michele Quitadamo, Antonio Merla, Anna Panza, Massimo Carella, Rosalia Maglietta and 5 more

Open access · goldAbstract read
In one paragraph

Article in BMC medical genomics, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
1.9field-weighted citation impact, top 15% 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

21 citing papers in PubMed, 37 citations in OpenAlex.

  1. Article
  2. Article
  3. Expression of N-Myc Downstream-Regulated Gene 2 in Bladder Cancer and Its Potential Utility as a Urinary Diagnostic Biomarker.Medical science monitor : international medical journal of experimental and clinical research · 2017
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  5. World journal of clinical oncology · 2017
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  7. The methylation of a panel of genes differentiates low-grade from high-grade gliomas.Tumour biology : the journal of the International Society for Oncodevelopmental Biology and Medicine · 2015
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  15. Expression of MSP58 in hepatocellular carcinoma.Medical oncology (Northwood, London, England) · 2013
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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

15 authors at 3 institutions in 1 country.

Ada PiepoliGastroenterology Unit and Research Laboratory, Casa Sollievo della Sofferenza, Hospital, IRCCS, San Giovanni Rotondo, Italy. a.piepoli@operapadrepio.it
Rosa Cotugno
Giuseppe Merla
Annamaria Gentile
Bartolomeo Augello
Michele Quitadamo
Antonio Merla
Anna Panza
Massimo Carella
Rosalia Maglietta
Annarita D'Addabbo
Nicola Ancona
Saverio Fusilli
Francesco Perri
Angelo Andriulli
Istituti di Ricovero e Cura a Carattere Scientifico · ITCasa Sollievo della Sofferenza · ITInstitute of Intelligent Systems for Automation · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAberrant DNA methylation of CpG islands of cancer-related genes is among the earliest and most frequent alterations in cancerogenesis and might be of value for either diagnosing cancer or evaluating recurrent disease. This mechanism usually leads to inactivation of tumour-suppressor genes. We have designed the current study to validate our previous microarray data and to identify novel hypermethylated gene promoters.

methodsThe validation assay was performed in a different set of 8 patients with colorectal cancer (CRC) by means quantitative reverse-transcriptase polymerase chain reaction analysis. The differential RNA expression profiles of three CRC cell lines before and after 5-aza-2'-deoxycytidine treatment were compared to identify the hypermethylated genes. The DNA methylation status of these genes was evaluated by means of bisulphite genomic sequencing and methylation-specific polymerase chain reaction (MSP) in the 3 cell lines and in tumour tissues from 30 patients with CRC.

resultsData from our previous genome search have received confirmation in the new set of 8 patients with CRC. In this validation set six genes showed a high induction after drug treatment in at least two of three CRC cell lines. Among them, the N-myc downstream-regulated gene 2 (NDRG2) promoter was found methylated in all CRC cell lines. NDRG2 hypermethylation was also detected in 8 out of 30 (27%) primary CRC tissues and was significantly associated with advanced AJCC stage IV. Normal colon tissues were not methylated.

conclusionThe findings highlight the usefulness of combining gene expression patterns and epigenetic data to identify tumour biomarkers, and suggest that NDRG2 silencing might bear influence on tumour invasiveness, being associated with a more advanced stage.

Identifiers

PMID19257893
PMCPMC2660908
OpenAlexW2025845835

What OpenQuestion holds

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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.