Evidence map›Paper›PMID 18787018›Full record

ArticleEndocrinology2009

Argonaute-2 expression is regulated by epidermal growth factor receptor and mitogen-activated protein kinase signaling and correlates with a transformed phenotype in breast cancer cells.

Brian D Adams, Kevin P Claffey, Bruce A White

Open access · bronzeAbstract read
In one paragraph

Article in Endocrinology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 81 papers.

0numbers the graph read from it
0cells of the map it votes in
81citing papers in PubMed
4.1field-weighted citation impact, top 5% 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

81 citing papers in PubMed, 150 citations in OpenAlex.

  1. Article
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  7. Sex-Specific MicroRNAs in Neurovascular Units in Ischemic Stroke.International journal of molecular sciences · 2021
    Review
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21 more citing papers are in PubMed but not listed here.

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

3 authors at 1 institution in 1 country.

Brian D AdamsDepartment of Cell Biology, University of Connecticut Health Center, 263 Farmington Avenue, Farmington, Connecticut 06030-3505, USA.
Kevin P Claffey
Bruce A White
UConn Health · US

Funding

MicroRNAs: Do they play a role in estrogen control?R21DK073456 · NIDDK · UNIVERSITY OF CONNECTICUT SCH OF MED/DNT · PI WHITE, BRUCE A · 2005 to 2006
$366k
NIDDK NIH HHS 1-R21-DK073456NIDDK NIH HHS R21 DK073456
6 · The paper itself

Abstract

Argonaute (Ago) 2 is the catalytic engine of mammalian RNA interference, but little is known concerning the regulation of Ago2 by cell-signaling pathways. In this study we show that expression of Ago2, but not Ago1, Ago3, or Ago4, is elevated in estrogen receptor (ER) alpha-negative (ERalpha(-)) vs. ERalpha-positive (ERalpha+) breast cancer cell lines, and in ERalpha(-) breast tumors. In MCF-7 cells the low level of Ago2 was found to be dependent upon active ERalpha/estrogen signaling. Interestingly, the high expression of Ago2 in ERalpha(-) cells was severely blunted by inhibition of the epidermal growth factor (EGF) receptor/MAPK signaling pathway, using either a pharmacological MAPK kinase inhibitor, U0126, or a small interfering RNA directed against EGF receptor. Half-life studies using cycloheximide indicated that EGF enhanced, whereas U0126 decreased, Ago2 protein stability. Furthermore, a proteosome inhibitor, MG132, blocked Ago2 protein turnover. The functional consequences of elevated Ago2 levels were examined by stable transfection of ERalpha+ MCF-7 cells with full-length and truncated forms of Ago2. The full-length Ago2 transfectants displayed enhanced proliferation, reduced cell-cell adhesion, and increased migratory ability, as shown by proliferation, homotypic aggregation, and wound healing assays, respectively. Overexpression of full-length Ago2, but not truncated forms of Ago2 or an empty vector control, reduced the levels of E-cadherin, beta-catenin, and beta-actin, as well as enhanced endogenous miR-206 activity. These data indicate that Ago2 is regulated at both the transcriptional and posttranslational level, and also implicate Ago2 and enhanced micro-RNA activity in the tumorigenic progression of breast cancer cell lines.

Indexed as

Gene Expression Regulation, NeoplasticArgonaute ProteinsBreast NeoplasmsCell AggregationCell MovementCell Transformation, NeoplasticCycloheximideDisease ProgressionErbB ReceptorsEukaryotic Initiation Factor-2Extracellular Signal-Regulated MAP KinasesFemaleHumansMicroRNAsPhenotypePolymerase Chain ReactionAGO2 protein, humanArgonaute ProteinsCycloheximideErbB ReceptorsEukaryotic Initiation Factor-2Extracellular Signal-Regulated MAP KinasesMicroRNAsRNA, MessengerRNA, Small Interfering

Identifiers

PMID18787018
PMCPMC2630894
OpenAlexW1982783106

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.