Evidence map›Paper›PMID 12444545›Full record

ArticleOncogene2002

Delta MEKK3:ER* activation induces a p38 alpha/beta 2-dependent cell cycle arrest at the G2 checkpoint.

Andrew P Garner, Claire R Weston, Daniel E Todd, Kathryn Balmanno, Simon J Cook

Open access · bronzeAbstract read
PubMed Publisher
In one paragraph

Article in Oncogene, 2002. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
3.2field-weighted citation impact, top 8% 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

17 citing papers in PubMed, 51 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 1 institution in 1 country.

Andrew P GarnerInositide Laboratory, Signalling Programme, The Babraham Institute, Babraham Hall, Cambridge CB2 4AT, UK.
Claire R Weston
Daniel E Todd
Kathryn Balmanno
Simon J Cook
Babraham Institute · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Whilst many studies have examined the role of the MAP Kinases in regulating the G1-->S transition, much less is known about the function of these pathways in regulating other cell cycle transitions. Stimulation of the conditional mutant Delta MEKK3:ER* in asynchronous hamster (CCl39) and rat (Rat-1) fibroblasts resulted in the strong activation of endogenous JNK and p38 but only a weak activation of ERK. Activation of Delta MEKK3:ER* inhibited cell proliferation through a combination of an initial G1 and G2 cell cycle arrest, followed by a delayed onset of apoptosis. When cells were synchronized in S phase with aphidicolin and then released, activation of Delta MEKK3:ER* resulted in the up-regulation of p21(CIP1) and a pronounced inhibition of cyclin A/CDK2 and cyclin B1/CDK1 kinase activity. Analysis of mitotic figures indicated that cells failed to enter mitosis, arresting late in G2. Delta MEKK3:ER*-mediated CDK inhibition and G2 arrest did not absolutely require p21(CIP1), since both events were observed in Rat-1 cells in which p21(CIP1) is transcriptionally silenced due to promoter methylation. Rather, CDK inhibition was associated with a down-regulation of cyclin A and B1 expression. Finally, application of the p38 inhibitor SB203580 partially restored cyclin B associated kinase activity and allowed cells to proceed through mitosis into the next G1 phase, suggesting that activation of the p38 alpha/beta 2 pathway can promote a G2 cell cycle arrest.

Indexed as

CDC2-CDC28 KinasesAnimalsAphidicolinApoptosisCDC2 Protein KinaseCells, CulturedCricetinaeCyclin ACyclin BCyclin B1Cyclin-Dependent Kinase 2Cyclin-Dependent Kinase Inhibitor p21Cyclin-Dependent KinasesCyclinsDNA MethylationEnzyme ActivationafimoxifeneAphidicolinCCNB1 protein, humanCcnb1 protein, ratCDC2-CDC28 KinasesCDC2 Protein KinaseCDK2 protein, humanCdk2 protein, ratCDKN1A protein, humanCdkn1a protein, ratCyclin ACyclin BCyclin B1Cyclin-Dependent Kinase 2Cyclin-Dependent Kinase Inhibitor p21Cyclin-Dependent KinasesCyclinsEnzyme InhibitorsImidazolesJNK Mitogen-Activated Protein KinasesMAP3K3 protein, humanMAP Kinase Kinase Kinase 3MAP Kinase Kinase KinasesMitogen-Activated Protein Kinase 11Mitogen-Activated Protein Kinase 3Mitogen-Activated Protein Kinasesp38 Mitogen-Activated Protein KinasesProtein Serine-Threonine KinasesPyridinesReceptors, EstrogenRecombinant Fusion ProteinsSB 203580Tamoxifen

Identifiers

PMID12444545
OpenAlexW2323034715

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.