Evidence map›Paper›PMID 19564413›Full record

ArticleMolecular and cellular biology2009

Estrogen regulation of cyclin E2 requires cyclin D1 but not c-Myc.

C Elizabeth Caldon, C Marcelo Sergio, Judith Schütte, Marijke N Boersma, Robert L Sutherland, Jason S Carroll, Elizabeth A Musgrove

Open access · greenAbstract read
In one paragraph

Article in Molecular and cellular biology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 46 papers.

0numbers the graph read from it
0cells of the map it votes in
46citing papers in PubMed
1.6field-weighted citation impact, top 16% 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

46 citing papers in PubMed, 71 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

7 authors at 4 institutions in 2 countries.

C Elizabeth CaldonCancer Research Program, Garvan Institute of Medical Research, NSW, Australia.
C Marcelo Sergio
Judith Schütte
Marijke N Boersma
Robert L Sutherland
Jason S Carroll
Elizabeth A Musgrove
Garvan Institute of Medical Research · AUCancer Research UK · GBSt Vincent's Clinic · AUUNSW Sydney · AU

Funding

Cancer Research UK
6 · The paper itself

Abstract

During estrogen-induced proliferation, c-Myc and cyclin D1 initiate independent pathways that activate cyclin E1-Cdk2 by sequestration and/or downregulation of the CDK inhibitor p21(Waf1/Cip1), without significant increases in cyclin E1 protein levels. In contrast, cyclin E2 undergoes a marked increase in expression, which occurs within 9 to 12 h of estrogen treatment of antiestrogen-pretreated MCF-7 breast cancer cells. Both E cyclins are important to estrogen action, as small interfering RNA (siRNA)-mediated knockdown of either cyclin E1 or cyclin E2 attenuated estrogen-mediated proliferation. Inducible expression of cyclin D1 upregulated cyclin E2, while siRNA-mediated knockdown of cyclin D1 attenuated estrogen effects on cyclin E2. However, manipulation of c-Myc levels did not profoundly affect cyclin E2. Cyclin E2 induction by estrogen was accompanied by recruitment of E2F1 to the cyclin E1 and E2 promoters, and cyclin D1 induction was sufficient for E2F1 recruitment. siRNA-mediated knockdown of the chromatin remodelling factor CHD8 prevented cyclin E2 upregulation. Together, these data indicate that cyclin E2-Cdk2 activation by estrogen occurs via E2F- and CHD8-mediated transcription of cyclin E2 downstream of cyclin D1. This contrasts with the predominant regulation of cyclin E1-Cdk2 activity via CDK inhibitor association downstream of both c-Myc and cyclin D1 and indicates that cyclins E1 and E2 are not always coordinately regulated.

Indexed as

EstrogensAnimalsBreast NeoplasmsCell Line, TumorCyclin D1Cyclin-Dependent Kinase 2Cyclin ECyclinsDNA-Binding ProteinsE2F Transcription FactorsEnzyme ActivationFemaleGene Expression Regulation, NeoplasticHumansMiceOncogene ProteinsCCNE1 protein, humanCCNE2 protein, humanCDK2 protein, humanCHD8 protein, humanCyclin D1Cyclin-Dependent Kinase 2Cyclin ECyclinsDNA-Binding ProteinsE2F Transcription FactorsEstrogensOncogene ProteinsProto-Oncogene Proteins c-mycRNA, Small InterferingTranscription Factors

Identifiers

PMID19564413
PMCPMC2725719
OpenAlexW2031447127

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.