Evidence map›Paper›PMID 20930505›Full record

ArticleCancer biology & therapy2010

Cyclin E and histone H3 levels are regulated by 5-fluorouracil in a DNA mismatch repair-dependent manner.

Heekyung Chung, Joy Chaudhry, Claudia G Lopez, John M Carethers

Open access · bronzeAbstract read
In one paragraph

Article in Cancer biology & therapy, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
0.7field-weighted citation impact, top 28% 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

7 citing papers in PubMed, 11 citations in OpenAlex.

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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

4 authors at 2 institutions in 1 country.

Heekyung ChungDepartment of Medicine, University of California, San Diego, CA, USA.
Joy Chaudhry
Claudia G Lopez
John M Carethers
University of California, San Diego · USUniversity of Michigan–Ann Arbor · US

Funding

Research Education CoreU54CA132384 · NCI · SAN DIEGO STATE UNIVERSITY · PI CRIPPS, RICHARD MATTHEW, CROWE, SHEILA E. · 2008 to 2022
$20.7M
Research Education CoreU54CA132379 · NCI · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI ARREDONDO, ELVA M, CROWE, SHEILA E. · 2008 to 2021
$16.1M
MICROSATELLITE INSTABILITY &DNA MISMATCH REPAIR SYSTEMR01DK067287 · NIDDK · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI CARETHERS, JOHN M · 2005 to 2015
$3.2M
The UCSD Digestive Diseases Research Development CenterR24DK080506 · NIDDK · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI ECKMANN, LARS · 2008 to 2012
$2.7M
NCI NIH HHS CA 132379NCI NIH HHS CA132384NCI NIH HHS U54 CA132379NCI NIH HHS U54 CA132384NIDDK NIH HHS DK067287NIDDK NIH HHS DK080506NIDDK NIH HHS R01 DK067287NIDDK NIH HHS R24 DK080506
6 · The paper itself

Abstract

Several studies indicate that the DNA mismatch repair (MMR) system may trigger cytotoxicity upon 5-fluorouracil (5-FU) recognition, but signaling pathways regulated by MMR in response to 5-FU are unknown. We hypothesize that recognition of 5-FU in DNA by MMR proteins trigger specific signaling cascades that results in slowing of the cell cycle and cell death. Whole human genome cDNA microarrays were used to examine relative signaling responses induced in MMR-proficient cells after 5-FU (5 μM) treatment for 24 hours. Analysis revealed 43 pathways differentially affected by 5-FU compared to control (P 1.4-fold) and downregulated cdc25C, cyclins B1 and B2, histone H2A, H2B, and H3 (< -1.4-fold) over control. Cell cycle analysis revealed a G1/S arrest by 5-FU that was congruent with increased cyclin E and decreased cdc25C protein expression. Importantly, with knockdown of hMLH1 and hMSH2, we observed that decreased histone H3 expression by 5-FU was dependent on hMLH1. Additionally, 5-FU treatment dramatically decreased levels of several histone H3 modifications. Our data suggest that 5-FU induces a G1/S arrest by regulating cyclin E and cdc25C expression, and MMR recognition of 5-FU in DNA may modulate cyclin E to affect the cell cycle. Furthermore, MMR recognition of 5-FU reduces histone H3 levels that could be related to DNA access by proteins and/or cell death during the G1/S phase of the cell cycle.

Indexed as

DNA Mismatch RepairAdaptor Proteins, Signal TransducingAntimetabolites, AntineoplasticCell CycleColorectal NeoplasmsCyclin EDNA DamageFluorouracilGene ExpressionHCT116 CellsHistonesHT29 CellsHumansMutL Protein Homolog 1Nuclear ProteinsOligonucleotide Array Sequence AnalysisAdaptor Proteins, Signal TransducingAntimetabolites, AntineoplasticCyclin EFluorouracilHistonesMLH1 protein, humanMutL Protein Homolog 1Nuclear Proteins

Identifiers

PMID20930505
PMCPMC3230292
OpenAlexW1982008728

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.