Evidence map›Paper›PMID 17923872›Full record

ArticleBritish journal of cancer2007

Expression of thymidylate synthase in human cells is an early G(1) event regulated by CDK4 and p16INK4A but not E2F.

B G Le François, J A Maroun, H C Birnboim

Open access · hybridAbstract read
In one paragraph

Article in British journal of cancer, 2007. 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
0.9field-weighted citation impact, top 25% 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, 50 citations in OpenAlex.

  1. Article
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  4. Review
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  7. Cell cycle regulation of folate-mediated one-carbon metabolism.Wiley interdisciplinary reviews. Systems biology and medicine · 2018
    Review
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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

3 authors at 2 institutions in 1 country.

B G Le FrançoisDepartment of Biochemistry Microbiology and Immunology, University of Ottawa, Ottawa, Ontario, Canada.
J A Maroun
H C Birnboim
University of Ottawa · CAOttawa Regional Cancer Foundation · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Thymidylate synthase (TS) is the enzyme that catalyses the last step in de novo thymidylate synthesis. It is of interest clinically because it is an effective target for drugs such as 5-fluorouracil, often used in combination therapy. Despite a number of earlier reports indicating that TS is a cell cycle-dependent enzyme, this remains equivocal. Here, we show that in HCT116 cells synchronised by serum starvation, there is a clear dissociation between the expression of cyclin E (a well-characterised cell-cycle protein) and TS. Although both cyclin E and TS mRNA and protein increased during G(1), TS upregulation was delayed. Moreover, TS levels did not decrease following S-phase completion while cyclin E decreased sharply. Similarly, clear differences were seen between cyclin E and TS as asynchronously growing HCT116 cells were growth-inhibited by low-serum treatment. In contrast to previous reports using rodent cells, adenovirus-mediated over-expression of E2F1 and cyclin E in three human cell lines had no effect on TS. Cell-cycle progression was blocked by treatment of cells with pharmacological inhibitors of CDK2 and CDK4 and by ectopic expression of p16INK4A. Whereas CDK2 inhibition had no effect on TS levels, inhibition of CDK4 was associated with decreased TS protein levels. These results provide the first evidence that drugs targeting CDK4 may be useful with anti-TS drugs as combination therapy for cancer.

Indexed as

Breast NeoplasmsCulture Media, Serum-FreeCyclin-Dependent Kinase 2Cyclin-Dependent Kinase 4Cyclin-Dependent Kinase Inhibitor p16Cyclin EE2F1 Transcription FactorFemaleG1 PhaseHCT116 CellsHumansImmunoblottingKineticsMaleProstatic NeoplasmsReverse Transcriptase Polymerase Chain ReactionCDK2 protein, humanCDK4 protein, humanCulture Media, Serum-FreeCyclin-Dependent Kinase 2Cyclin-Dependent Kinase 4Cyclin-Dependent Kinase Inhibitor p16Cyclin EE2F1 Transcription FactorThymidylate Synthase

Identifiers

PMID17923872
PMCPMC2360461
OpenAlexW2076172881

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.