Evidence map›Paper›PMID 14767478›Full record

ArticleOncogene2004

Cyclin A/Cdk2 complexes regulate activation of Cdk1 and Cdc25 phosphatases in human cells.

Jayashree Mitra, Greg H Enders

Open access · greenAbstract read
In one paragraph

Article in Oncogene, 2004. 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
1.9field-weighted citation impact, top 17% 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, 99 citations in OpenAlex.

  1. Targeting WEE1 Kinase for Breast Cancer Therapeutics: An Update.International journal of molecular sciences · 2025
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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

2 authors at 1 institution in 1 country.

Jayashree MitraDepartments of Medicine and Genetics and Cancer Center, University of Pennsylvania, Philadelphia, PA 19104-6140, USA. jmitra@mail.med.upenn.edu
Greg H Enders
University of Pennsylvania · US

Funding

TRANSGENIC AND CHIMERIC MOUSE COREP30DK050306 · NIDDK · UNIVERSITY OF PENNSYLVANIA · PI Ken Hashigiwa Cadwell · 1997 to 2026
$32.5M
G2 Role For Cdk2 in Human CellsR01GM065514 · NIGMS · UNIVERSITY OF PENNSYLVANIA · PI ENDERS, GREGORY H. · 2004 to 2007
$1.1M
Cdk2 links DNA synthesis and mitosis in human cellsK01DK061280 · NIDDK · UNIVERSITY OF PENNSYLVANIA · PI MITRA, JAYASHREE · 2002 to 2004
$360k
NIDDK NIH HHS 1-K01-DK61280-01NIDDK NIH HHS K01 DK061280NIDDK NIH HHS P30 DK050306NIDDK NIH HHS P30 DK50306NIGMS NIH HHS R01 GM065514
6 · The paper itself

Abstract

Mitotic entry, a critical decision point for maintaining genetic stability, is governed by the cyclin B/Cyclin dependent kinase 1 (Cdc2) complex. In Xenopus oocytes and early embryos, accumulation of cyclin B activates Cdk1, which then phosphorylates and activates the positive regulator Cdc25 in an autocatalytic feedback loop. However, cyclin B levels do not increase as some human cells approach mitosis, and the key factors regulating Cdk1 activation in human cells are unknown. We report here that reducing cyclin A expression by RNA interference (RNAi) in primary human fibroblasts inhibited activation of Cdc25B and Cdc25C and dephosphorylation of Cdk1 on tyrosine (tyr) 15. These results were reproduced in U2-OS cells by inducing the expression of a dominant-negative (dn) mutant of Cdk2, the principal cyclin A binding partner. Cdk2-dn induction could inhibit Cdc25B activity and foster Cdk1 tyr phosphorylation within the S phase, temporally dissociating these events from Cdk1 activation at mitosis. In contrast, reducing Cdk1 expression delayed mitotic entry without markedly impairing Cdc25B or Cdc25C activity. These results suggest that cyclin A/Cdk2 complexes are key regulators of Cdc25 and Cdk1 activation in human cells. This pathway appears to be commonly deregulated in cancer.

Indexed as

cdc25 PhosphatasesCDC2-CDC28 KinasesCDC2 Protein KinaseCells, CulturedCyclin ACyclin-Dependent Kinase 2Enzyme ActivationG2 PhaseHumansPhosphorylationS Phasecdc25 PhosphatasesCDC2-CDC28 KinasesCDC2 Protein KinaseCDK2 protein, humanCyclin ACyclin-Dependent Kinase 2

Identifiers

PMID14767478
PMCPMC1924680
OpenAlexW1983018722

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.