Evidence map›Paper›PMID 20010939›Full record

ArticleBritish journal of cancer2010

Pre-clinical evaluation of cyclin-dependent kinase 2 and 1 inhibition in anti-estrogen-sensitive and resistant breast cancer cells.

N Johnson, J Bentley, L-Z Wang, D R Newell, C N Robson, G I Shapiro, N J Curtin

Expression of concernOpen access · hybridAbstract read
In one paragraph

Article in British journal of cancer, 2010. 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 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
2.2field-weighted citation impact, top 12% 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

25 citing papers in PubMed, 66 citations in OpenAlex.

  1. Cyclin Dependent Kinase 2 (CDK2) Inhibitors in Oncology Clinical Trials: A Review.Journal of immunotherapy and precision oncology · 2025
    Review
  2. Inhibition of Dormant Lung Cancer Cell Reactivation byDrug design, development and therapy · 2025
    Article
  3. Article
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  5. Review
  6. Article
  7. Article
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  9. Review
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  13. Article
  14. Article
  15. Protein Kinase Targets in Breast Cancer.International journal of molecular sciences · 2017
    Review
  16. Article
  17. Article
  18. Review
  19. Review
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors at 2 institutions in 2 countries.

N JohnsonNorthern Institute for Cancer Research, Newcastle University, Paul O' Gorman Building, Framlington Place, Newcastle upon Tyne, NE2 4HH, UK.
J Bentley
L-Z Wang
D R Newell
C N Robson
G I Shapiro
N J Curtin
Newcastle University · GBDana-Farber Cancer Institute · US

Funding

Variation in Receptor Tyrosine Kinases and Breast Cancer RiskP50CA089393 · NCI · DANA-FARBER CANCER INSTITUTE · PI HARRIS, LYNDSAY NORINE · 2000 to 2009
$28.8M
SPORE in Lung CancerP20CA090578 · NCI · DANA-FARBER CANCER INSTITUTE · PI JOHNSON, BRUCE E. · 2003 to 2007
$5.1M
Flavopiridol Mediated Apoptosis During S Phase in NSCLCR01CA090687 · NCI · DANA-FARBER CANCER INSTITUTE · PI SHAPIRO, GEOFFREY I · 2001 to 2014
$4.2M
Breast Cancer Now 2001:194Cancer Research UKMedical Research Council G0900871NCI NIH HHS P20 CA090578NCI NIH HHS P50 CA089393NCI NIH HHS R01 CA090687NCI NIH HHS R01 CA90687
6 · The paper itself

Abstract

backgroundCellular proliferation, driven by cyclin-dependent kinases (CDKs) and their cyclin partners, is deregulated in cancer. Anti-estrogens, such as tamoxifen, antagonise estrogen-induced ERalpha transactivation of cyclin D1, resulting in reduced CDK4/6 activity, p27(Kip1)-mediated inhibition of CDK2 and growth arrest. We hypothesised that direct inhibition of CDK2 and CDK1 may overcome the major clinical problem of anti-estrogen resistance.

methodsThe cellular effects of CDK2/1 siRNA knockdown and purine-based CDK2/1 inhibitors, NU2058 and NU6102, were measured in anti-estrogen-sensitive and resistant breast cancer cell lines.

resultsCDK2 knockdown caused G1 accumulation, whereas CDK1 depletion caused G2/M slowing, and dual CDK1/2 depletion resulted in further G2/M accumulation and cell death in both anti-estrogen-sensitive and resistant cells, confirming CDK2 and CDK1 as targets for breast cancer therapy. In contrast to tamoxifen, which only affected hormone-sensitive cells, NU2058 and NU6102 reduced CDK2-mediated phosphorylation of pRb, E2F transcriptional activity and proliferation, ultimately resulting in cell death, in both anti-estrogen-sensitive and resistant cells. Both drugs caused G2/M arrest, reflective of combined CDK2/1 knockdown, with a variable degree of G1 accumulation.

conclusionThese studies confirm the therapeutic potential of CDK2 and CDK1 inhibitors for cancer therapy, and support their use as an alternative treatment for endocrine-resistant breast cancer.

Indexed as

Antineoplastic AgentsBreast NeoplasmsCDC2 Protein KinaseCell CycleCell Line, TumorCell ProliferationCyclin-Dependent Kinase 2Estrogen Receptor ModulatorsFemaleHumansProtein Kinase InhibitorsAntineoplastic AgentsCDC2 Protein KinaseCyclin-Dependent Kinase 2Estrogen Receptor ModulatorsProtein Kinase Inhibitors

Identifiers

PMID20010939
PMCPMC2816653
OpenAlexW1965326552

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.