Evidence map›Paper›PMID 15760106›Full record

ArticleThe AAPS journal2004

Transporter and ion channel gene expression after Caco-2 cell differentiation using 2 different microarray technologies.

Christopher P Landowski, Pascale Anderle, Duxin Sun, Wolfgang Sadee, Gordon L Amidon

Open access · bronzeAbstract readComparative Study
In one paragraph

Article in The AAPS journal, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
1.0field-weighted citation impact, top 28% 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

10 citing papers in PubMed, 39 citations in OpenAlex.

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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

5 authors at 3 institutions in 1 country.

Christopher P LandowskiDepartment of Pharmaceutical Sciences, College of Pharmacy, University of Michigan, Ann Arbor, MI 48109, USA.
Pascale Anderle
Duxin Sun
Wolfgang Sadee
Gordon L Amidon
University of Michigan–Ann Arbor · USThe Ohio State University · USUniversity of San Francisco · US

Funding

PHARMACOGENETICS OF MEMBRANE TRANSPORTERSU01GM061390 · NIGMS · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI GIACOMINI, KATHLEEN M · 2000 to 2009
$29.2M
Pharmacogenomics of Membrane TransportersU19GM061390 · NIGMS · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI WITTE, JOHN S. · 2010 to 2014
$16.3M
USE OF MUCCOSAL CELL CARRIERS/EYZYMES IN ORAL ABSORPTIONR01GM037188 · NIGMS · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI AMIDON, GORDON L · 1986 to 2013
$4.4M
NIGMS NIH HHS GM37188NIGMS NIH HHS GM61390
6 · The paper itself

Abstract

mRNA expression profiles had previously been measured in Caco-2 cells (human colonic carcinoma cells) using either custom-designed spotted oligonucleotide arrays or Affymetrix GeneChip oligonucleotide arrays. The Caco-2 cells used were from different clones and were examined under slightly different culture conditions commonly encountered when Caco-2 cells are used as a model tissue for studying intestinal transport and metabolism in different laboratories. In this study, we compared gene expression profiles of Caco-2 cells generated with different arrays to assess the validity of conclusions derived from the 2 independent studies, with a focus on changes in transporter and ion channel mRNA expression levels on Caco-2 cell differentiation. Significant changes in expression levels upon differentiation were observed with 78 genes, with probes common to both arrays. Of these, 18 genes were upregulated and 36 genes were downregulated. The 2 arrays yielded discrepant results for 24 genes, showing significant changes upon differentiation. The results from the 2 arrays correlated well for genes expressed above average levels (r = 0.75, P < 0.01, n = 25) and poorly for genes expressed at low levels (r = 0.08, P > 0.05, n = 25). Overall correlation across the 2 platforms was r = 0.45 (P < 0.01) for the 78 genes, with similar results from both arrays. Despite differences in experimental conditions and array technology, similar results were obtained for most genes.

Indexed as

Caco-2 CellsCell DifferentiationGene Expression RegulationHumansIon ChannelsMembrane Transport ProteinsMicroarray AnalysisIon ChannelsMembrane Transport Proteins

Identifiers

PMID15760106
PMCPMC2751246
OpenAlexW2023621883

What OpenQuestion holds

Textmetadata
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.