Evidence map›Paper›PMID 12242655›Full record

ArticleOncogene2002

Effects of ErbB-2 overexpression on mitogenic signalling and cell cycle progression in human breast luminal epithelial cells.

John F Timms, Sarah L White, Michael J O'Hare, Michael D Waterfield

Expression of concernAbstract 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. It carries an expression of concern. Cited by 29 papers.

0numbers the graph read from it
0cells of the map it votes in
29citing 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

29 citing papers in PubMed, 69 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Plants (Basel, Switzerland) · 2025
    Article
  5. Article
  6. HER2-Low Breast Cancer: Current Landscape and Future Prospects.Breast cancer (Dove Medical Press) · 2023
    Review
  7. Cancer Immunoprevention: Current Status and Future Directions.Archivum immunologiae et therapiae experimentalis · 2021
    Review
  8. Review
  9. Article
  10. 'Omics Approaches to Explore the Breast Cancer Landscape.Frontiers in cell and developmental biology · 2019
    Review
  11. Article
  12. Cyclin E amplification, over-expression, and relapse-free survival in HER-2-positive primary breast cancer.Tumour biology : the journal of the International Society for Oncodevelopmental Biology and Medicine · 2016
    Article
  13. Article
  14. Article
  15. Article
  16. Observational
  17. Article
  18. Article
  19. Article
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

4 authors at 1 institution in 1 country.

John F TimmsLudwig Institute for Cancer Research, 91 Riding House Street, London W1W 7BS, UK. jtimms@ludwig.ucl.ac.uk
Sarah L White
Michael J O'Hare
Michael D Waterfield
Ludwig Cancer Research · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Most breast cancers arise from luminal epithelial cells and 25-30% of these tumours overexpress the ErbB-2 receptor. Herein, a non-transformed, immortalized cell system was used to investigate the effects of ErbB-2 overexpression in luminal epithelial cells. The phenotypic consequence of ErbB-2 overexpression is a shortening of the G1 phase of the cell cycle and early S phase entry, which leads to hyperproliferation. We show that this effect was mediated through the up-regulation of cdk6 and cyclins D1 and E, and enhanced degradation and relocalization of p27(Kip1). These changes were effected predominantly through enhanced MAPK signalling, resulting in cdk2 hyperactivation. PI3K signalling also participated in cell cycle progression, since PI3K and MAPK coordinately regulated changes in cyclin D1 and cdk6 expression. Cdk4 activity was not required for cell cycle progression in these cells, and was constitutively inhibited through its association with p16(INK4A). MAPK-dependent induction of p21(Cip1) was also necessary for G1 phase progression, although its degradation by the proteasome was required for S phase entry. These data provide new insights into the complex molecular mechanisms underlying mitogenic cell cycle control in luminal epithelial cells, the cell type relevant to primary breast cancer, and show how ErbB-2 overexpression subverts this normal control.

Indexed as

CDC2-CDC28 KinasesMuscle ProteinsBreastBreast NeoplasmsCell CycleCell DivisionCell Transformation, NeoplasticCyclin D1Cyclin-Dependent Kinase 2Cyclin-Dependent Kinase 6Cyclin-Dependent Kinase Inhibitor p21Cyclin-Dependent KinasesCyclinsEpidermal Growth FactorEpithelial CellsErb-b2 Receptor Tyrosine KinasesCDC2-CDC28 KinasesCDK2 protein, humanCDK6 protein, humanCDKN1A protein, humanCyclin D1Cyclin-Dependent Kinase 2Cyclin-Dependent Kinase 6Cyclin-Dependent Kinase Inhibitor p21Cyclin-Dependent KinasesCyclinsEpidermal Growth FactorErb-b2 Receptor Tyrosine KinasesMicrofilament ProteinsMitogen-Activated Protein KinasesMuscle ProteinsPhosphatidylinositol 3-KinasesProtein Serine-Threonine KinasesProto-Oncogene Proteins c-mycTagln protein, mouse

Identifiers

PMID12242655
OpenAlexW2091844229

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.