Evidence map›Paper›PMID 17195088›Full record

ArticleAnnals of surgical oncology2007

Methylation and gene silencing of the Ras-related GTPase gene in lung and breast cancers.

Makoto Suzuki, Hisayuki Shigematsu, David S Shames, Noriaki Sunaga, Takao Takahashi, Narayan Shivapurkar, Toshihiko Iizasa, John D Minna, Takehiko Fujisawa, Adi F Gazdar

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Article in Annals of surgical oncology, 2007. 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
0.5field-weighted citation impact, top 35% 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, 44 citations in OpenAlex.

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  10. RRAD inhibits aerobic glycolysis, invasion, and migration and is associated with poor prognosis in hepatocellular carcinoma.Tumour biology : the journal of the International Society for Oncodevelopmental Biology and Medicine · 2016
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  18. Cigarette smoking and DNA methylation.Frontiers in genetics · 2013
    Article
  19. TGF-β mediated DNA methylation in prostate cancer.Translational andrology and urology · 2012
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

10 authors at 3 institutions in 2 countries.

Makoto SuzukiDepartment of Thoracic Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan.
Hisayuki Shigematsu
David S Shames
Noriaki Sunaga
Takao Takahashi
Narayan Shivapurkar
Toshihiko Iizasa
John D Minna
Takehiko Fujisawa
Adi F Gazdar
Chiba University · JPThe University of Texas Southwestern Medical Center · USSouthwestern Medical Center · US

Funding

UNIVERSITY OF TEXAS--SPORE IN LUNG CANCERP50CA070907 · NCI · UT SOUTHWESTERN MEDICAL CENTER · PI GIBBONS, DON LYNN · 1996 to 2024
$57.4M
Novel Reagents and New Biomarkers for Lung CancerU01CA084971 · NCI · UT SOUTHWESTERN MEDICAL CENTER · PI GAZDAR, ADI F. · 1999 to 2009
$4.5M
NCI NIH HHS 5U01CA8497102NCI NIH HHS P50CA70907
6 · The paper itself

Abstract

backgroundRRAD, a small Ras-related GTPase, is highly expressed in human skeletal muscle, lung, and heart. Although loss of expression of RRAD in breast cancer cells has been reported and it may act as an oncogene, the mechanism of silencing is unknown.

methodsWe examined (1) mRNA expression of RRAD in lung and breast cancer cell lines using RT-PCR and (2) methylation status of lung and breast cancers.

resultsLoss of RRAD expression was found in 14 of 20 (70%) NSCLC cell lines, 11 of 11 (100%) SCLC cell lines, and 8 of 10 (80%) breast cancer cell lines; expression was not affected in normal bronchial and mammary epithelial cells. Treatment of 23 expression-negative cell lines with a demethylating agent restored expression in all cases. We developed a methylation-specific assay from the analysis of bisulfite sequencing of the 5' region of RRAD in expression-negative and positive cell lines, which resulted in good concordance between methylation and expression. Primary lung and breast cancers showed hypermethylation in 89 of 214 (42%) and 39 of 63 (62%) cases, respectively. RRAD hypermethylation correlated with smoking history and poorer prognosis in lung adenocarcinomas.

conclusionsWe conclude that epigenetic silencing of RRAD is a frequent event in lung and breast cancers, and analysis of it may provide novel opportunities for prognosis and therapy of these cancers.

Indexed as

DNA MethylationGene Expression Regulation, NeoplasticGene SilencingAdenocarcinomaAntimetabolites, AntineoplasticAzacitidineBiomarkers, TumorBreast NeoplasmsCarcinoma, Non-Small-Cell LungCarcinoma, Small CellCarcinoma, Squamous CellCpG IslandsDNA, NeoplasmEpigenesis, GeneticFemaleHumansAntimetabolites, AntineoplasticAzacitidineBiomarkers, TumorDNA, Neoplasmras ProteinsRNA, MessengerRNA, NeoplasmRRAD protein, human

Identifiers

PMID17195088
OpenAlexW2059109318

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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.