Evidence map›Paper›PMID 12101225›Full record

ArticleMolecular and cellular biology2002

PIN1 is an E2F target gene essential for Neu/Ras-induced transformation of mammary epithelial cells.

Akihide Ryo, Yih-Cherng Liou, Gerburg Wulf, Masafumi Nakamura, Sam W Lee, Kun Ping Lu

Open access · greenAbstract read
In one paragraph

Article in Molecular and cellular biology, 2002. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 124 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
124citing papers in PubMed, 1 pooled it
3.3field-weighted citation impact, top 7% 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

124 citing papers in PubMed, 1 synthesis or guideline pooled it, 250 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Review
  4. Telomere Maintenance and Oncogenesis.International journal of molecular sciences · 2025
    Review
  5. Review
  6. Article
  7. Review
  8. Article
  9. Review
  10. Article
  11. Article
  12. The molecular mechanisms of peptidyl-prolylFrontiers in pharmacology · 2024
    Review
  13. The role of the Pin1-Frontiers in cell and developmental biology · 2024
    Review
  14. Review
  15. Review
  16. Article
  17. Development of a contacting transwell co-culture system for theFrontiers in cell and developmental biology · 2023
    Article
  18. Review
  19. Article
  20. Review

64 more citing papers are in PubMed but not listed here.

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 2 institutions in 1 country.

Akihide RyoCancer Biology Program, Division of Hematology/Oncology, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, 330 Brookline Avenue, Boston, MA 02215, USA.
Yih-Cherng Liou
Gerburg Wulf
Masafumi Nakamura
Sam W Lee
Kun Ping Lu
Beth Israel Deaconess Medical Center · USHarvard University · US

Funding

Function and Regulation of the Prolyl Isomerase Pin1R01GM058556 · NIGMS · BETH ISRAEL DEACONESS MEDICAL CENTER · PI LU, KUN PING · 1999 to 2010
$3.9M
Function and Regulation of Pin2/TRF1 and PinX1R01GM056230 · NIGMS · BETH ISRAEL DEACONESS MEDICAL CENTER · PI LU, KUN PING · 1997 to 2005
$1.8M
NIGMS NIH HHS GM 58556NIGMS NIH HHS R01 GM056230NIGMS NIH HHS R01 GM058556NIGMS NIH HHS R01 GM 56230
6 · The paper itself

Abstract

Oncogenes Neu/HER2/ErbB2 and Ras can induce mammary tumorigenesis via upregulation of cyclin D1. One major regulatory mechanism in these oncogenic signaling pathways is phosphorylation of serines or threonines preceding proline (pSer/Thr-Pro). Interestingly, the pSer/Thr-Pro motifs in proteins exist in two completely distinct cis and trans conformations, whose conversion is catalyzed specifically by the essential prolyl isomerase Pin1. By isomerizing pSer/Thr-Pro bonds, Pin1 can regulate the conformation and function of certain phosphorylated proteins. We have previously shown that Pin1 is overexpressed in breast tumors and positively regulates cyclin D1 by transcriptional activation and posttranslational stabilization. Moreover, in Pin1 knockout mice, mammary epithelial cells fail to undergo massive proliferation during pregnancy, as is the case in cyclin D1 null mice. These results indicate that Pin1 is upregulated in breast cancer and may be involved in mammary tumors. However, the mechanism of Pin1 overexpression in cancer and its significance in cell transformation remain largely unknown. Here we demonstrate that PIN1 expression is mediated by the transcription factor E2F and enhanced by c-Neu and Ha-Ras via E2F. Furthermore, overexpression of Pin1 not only confers transforming properties on mammary epithelial cells but also enhances the transformed phenotypes of Neu/Ras-transformed mammary epithelial cells. In contrast, inhibition of Pin1 suppresses Neu- and Ras-induced transformed phenotypes, which can be fully rescued by overexpression of a constitutively active cyclin D1 mutant that is refractory to the Pin1 inhibition. Thus, Pin1 is an E2F target gene that is essential for the Neu/Ras-induced transformation of mammary epithelial cells through activation of cyclin D1.

Indexed as

Cell Cycle ProteinsDNA-Binding ProteinsBase SequenceBreastCell DivisionCell LineCell Line, TransformedCell Transformation, NeoplasticCyclin D1E2F Transcription FactorsEpithelial CellsErb-b2 Receptor Tyrosine KinasesFemaleGene Expression Regulation, NeoplasticGenes, DominantHumansCell Cycle ProteinsCyclin D1DNA-Binding ProteinsE2F Transcription FactorsErb-b2 Receptor Tyrosine KinasesNIMA-Interacting Peptidylprolyl IsomerasePeptidylprolyl IsomerasePIN1 protein, humanPin1 protein, mouseras ProteinsRecombinant Fusion ProteinsTranscription Factors

Identifiers

PMID12101225
PMCPMC133940
OpenAlexW2132385852

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.