Evidence map›Paper›PMID 19468668›Full record

ArticleJournal of gastroenterology2009

Differential gene expression in normal esophagus and Barrett's esophagus.

Jacob Wang, Rong Qin, Yan Ma, Huiyun Wu, Heiko Peters, Matthew Tyska, Nicholas J Shaheen, Xiaoxin Chen

Abstract read
In one paragraph

Article in Journal of gastroenterology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed
4.4field-weighted citation impact, top 6% 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

29 citing papers in PubMed, 47 citations in OpenAlex.

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  4. PAX9 in Cancer Development.International journal of molecular sciences · 2022
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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

8 authors at 5 institutions in 2 countries.

Jacob WangCancer Research Program, Julius L. Chambers Biomedical/Biotechnology Research Institute, North Carolina Central University, 700 George Street, Durham, NC 27707, USA.
Rong Qin
Yan Ma
Huiyun Wu
Heiko Peters
Matthew Tyska
Nicholas J Shaheen
Xiaoxin Chen
University of North Carolina at Chapel Hill · USNorth Carolina Central University · USNewcastle University · GBVanderbilt University · USVanderbilt University Medical Center · US

Funding

ROLES OF INFLAMMATION AND ANDROGEN METABOLISM IN PROSTATE CANCER DISPARITYP20MD000175 · NIMHD · NORTH CAROLINA CENTRAL UNIVERSITY · PI KIMBRO, KEVIN SEAN · 2002 to 2016
$15.6M
Targeting the MEKK2-ERK5 Signaling Node in Triple Negative Breast CancerU54CA156735 · NCI · NORTH CAROLINA CENTRAL UNIVERSITY · PI RICHARDSON, MICHELER RICARDO · 2010 to 2021
$13.0M
Regulation of Brush Border Structure by Myosin-1aR01DK075555 · NIDDK · VANDERBILT UNIVERSITY · PI TYSKA, MATTHEW J · 2007 to 2016
$2.7M
NCCU-BBRI/UNC-LINEBERGER PARTNERSHIP IN CANCER RESEARCHU56CA092077 · NCI · NORTH CAROLINA CENTRAL UNIVERSITY · PI RICHARDSON, MICHELER RICARDO · 2001 to 2008
$2.5M
NCI NIH HHS U54 CA156735NCI NIH HHS U56 CA092077NIDDK NIH HHS R01 DK075555NIMHD NIH HHS P20 MD000175
6 · The paper itself

Abstract

purposeAs the premalignant lesion of human esophageal adenocarcinoma (EAC), Barrett's esophagus (BE) is characterized by intestinal metaplasia in the normal esophagus (NE). Gene expression profiling with microarray and serial analysis of gene expression (SAGE) may help us understand the potential molecular mechanism of human BE.

methodsWe analyzed three microarray datasets (two cDNA arrays and one oligonucleotide array) and one SAGE dataset with statistical tools, significance analysis of microarrays (SAM) and SAGE(Poisson), to identify individual genes differentially expressed in BE. Gene set enrichment analysis (GSEA) was used to identify a priori defined sets of genes that were differentially expressed. These gene sets were grouped according to either certain signaling pathways (GSEA curated), or the presence of consensus binding sequences of known transcription factors (GSEA motif). Immunohistochemical staining (IHC) was used to validate differential gene expression.

resultsBoth SAM and SAGE(Poisson) identified 68 differentially expressed genes (55 BE genes and 13 NE genes) with an arbitrary cutoff ratio (> or =4-fold). With IHC on matched pairs of NE and BE tissues from 6 patients, these genes were grouped into 6 categories: category I (25 genes only expressed in BE), category II (5 genes only expressed in NE), category III (8 genes expressed more in BE than in NE), and category IV (2 genes expressed more in NE than in BE). Differential expression of the remaining genes was not confirmed by IHC either due to false discovery (category V), or lack of proper antibodies (category VI). Besides individual genes, the TGFbeta pathway and several transcription factors (CDX2, HNF1, and HNF4) were identified by GSEA as enriched pathways and motifs in BE. Apart from 9 target genes known to be up-regulated in BE, IHC staining confirmed up-regulation of 19 additional CDX1 and CDX2 target genes in BE.

conclusionOur data suggested an important role of CDX1 and CDX2 in the development of BE. The IHC-confirmed gene list will lead to future studies on the molecular mechanism of BE.

Indexed as

Barrett EsophagusCDX2 Transcription FactorDatabases, GeneticGene ExpressionGene Expression ProfilingHomeodomain ProteinsHumansImmunohistochemistryOligonucleotide Array Sequence AnalysisSignal TransductionTranscription FactorsUp-RegulationCDX1 protein, humanCDX2 protein, humanCDX2 Transcription FactorHomeodomain ProteinsTranscription Factors

Identifiers

PMID19468668
PMCPMC3811010
OpenAlexW2045985535

What OpenQuestion holds

Textmetadata
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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.