Evidence map›Paper›PMID 18229450›Full record

ArticleCell stress & chaperones2007

Induction of Hsp22 (HspB8) by estrogen and the metalloestrogen cadmium in estrogen receptor-positive breast cancer cells.

Xiankui Sun, Jean-Marc Fontaine, Ingrid Bartl, Babak Behnam, Michael J Welsh, Rainer Benndorf

Open access · greenAbstract read
In one paragraph

Article in Cell stress & chaperones, 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
1.9field-weighted citation impact, top 14% 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, 55 citations in OpenAlex.

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  12. 17Cancers · 2019
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  20. The role of cadmium and nickel in estrogen receptor signaling and breast cancer: metalloestrogens or not?Journal of environmental science and health. Part C, Environmental carcinogenesis & ecotoxicology reviews · 2012
    Review
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

6 authors at 1 institution in 1 country.

Xiankui SunUniversity of Michigan Medical School, Department of Cell and Developmental Biology, 3065 BSRB, 109 Zina Pitcher Place, Ann Arbor, MI 48109-2200, USA.
Jean-Marc Fontaine
Ingrid Bartl
Babak Behnam
Michael J Welsh
Rainer Benndorf
University of Michigan–Ann Arbor · US

Funding

Molecular Resources CoreP01ES011188 · NIEHS · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI WELSH, MICHAEL JOHN · 2001 to 2005
$4.8M
NIEHS NIH HHS P01 ES011188NIEHS NIH HHS P01ES11188
6 · The paper itself

Abstract

Estrogen (E2) plays a critical role in the etiology and progression of human breast cancer. The estrogenic response is complex and not completely understood, including in terms of the involved responsive genes. Here we show that Hsp22 (synonyms: HspB8, E2lG1, H11), a member of the small heat shock protein (sHSP) superfamily, was induced by E2 in estrogen receptor-positive MCF-7 breast cancer cells, resulting in an elevated Hsp22 protein level, whereas it was not induced in estrogen receptor-negative MDA-MB-231 cells. This induction was prevented by the pure anti-estrogen ICI182780 (faslodex, fulvestrant), whereas tamoxifen, a substance with mixed estrogenic and antiestrogenic properties, had no major inhibitory effect on this induction, nor did it induce Hsp22 on its own. Cadmium (Cd) is an environmental pollutant with estrogenic properties (metalloestrogen) that has been implicated in breast cancer. Treatment of MCF-7 cells with Cd also resulted in induction of Hsp22, and this induction was also inhibited by ICI182780. In live MCF-7 cells, Hsp22 interacted at the level of dimers with Hsp27, a related sHSP, as was shown by quantitative fluorescence resonance energy transfer measurements. In cytosolic extracts of MCF-7 cells, most of the E2- and Cd-induced Hsp22 was incorporated into high-molecular mass complexes. In part, Hsp22 and Hsp27 were components of distinct populations of these complexes. Finally, candidate elements in the Hsp22 promoter were identified by sequence analysis that could account for the induction of Hsp22 by E2 and Cd. Taken together, Hsp22 induction represents a new aspect of the estrogenic response with potential significance for the biology of estrogen receptor-positive breast cancer cells.

Indexed as

Base SequenceBreast NeoplasmsCadmiumCell ExtractsCell Line, TumorDown-RegulationDrug Resistance, NeoplasmEstrogensFemaleHeat-Shock ProteinsHSP27 Heat-Shock ProteinsHumansMolecular ChaperonesMolecular Sequence DataMolecular WeightNeoplasm ProteinsCadmiumCell ExtractsEstrogensHeat-Shock ProteinsHSP27 Heat-Shock ProteinsHSPB1 protein, humanHSPB8 protein, humanMolecular ChaperonesNeoplasm ProteinsProtein Serine-Threonine KinasesReceptors, Estrogen

Identifiers

PMID18229450
PMCPMC2134793
OpenAlexW2150185482

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.