Evidence map›Paper›PMID 19858003›Full record

ArticleMolecular oncology2010

Topoisomerase IIalpha-dependent induction of a persistent DNA damage response in response to transient etoposide exposure.

Sébastien Soubeyrand, Louise Pope, Robert J G Haché

Open access · bronzeAbstract read
In one paragraph

Article in Molecular oncology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
0.7field-weighted citation impact, top 31% 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

22 citing papers in PubMed, 35 citations in OpenAlex.

  1. Article
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  6. Biological evaluation of novel thiomaltol-based organometallic complexes as topoisomerase IIα inhibitors.Journal of biological inorganic chemistry : JBIC : a publication of the Society of Biological Inorganic Chemistry · 2020
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  14. Review
  15. Physiological Roles of DNA Double-Strand Breaks.Journal of nucleic acids · 2017
    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 1 institution in 1 country.

Sébastien SoubeyrandThe Ottawa Health Research Institute, University of Ottawa, 451 Smyth Road, Ottawa, ON K1H 8M5, Canada.
Louise Pope
Robert J G Haché
University of Ottawa · CA

Funding

Canadian Institutes of Health Research MOP-13412
6 · The paper itself

Abstract

Cytotoxicity of the topoisomerase II (topoII) poison etoposide has been ascribed to the persistent covalent trapping of topoII in DNA cleavage complexes that become lethal as cells replicate their DNA. However, short term etoposide treatment also leads to subsequent cell death, suggesting that the lesions that lead to cytotoxicity arise rapidly and prior to the onset DNA replication. In the present study 1h treatment with 25muM etoposide was highly toxic and initiated a double-stranded DNA damage response as reflected by the recruitment of ATM, MDC1 and DNA-PKcs to gammaH2AX foci. While most DNA breaks were rapidly repaired upon withdrawal of the etoposide treatment, the repair machinery remained engaged in foci for at least 24h following withdrawal. TopoII siRNA ablation showed the etoposide toxicity and gammaH2AX response to correlate with the inability of the cell to correct topoIIalpha-initiated DNA damage. gammaH2AX induction was resistant to the inhibition of DNA replication and transcription, but was increased by pre-treatment with the histone deacetylase inhibitor trichostatin A. These results link the lethality of etoposide to the generation of persistent topoIIalpha-dependent DNA defects within topologically open chromatin domains.

Indexed as

Antigens, NeoplasmAntineoplastic Agents, PhytogenicApoptosisATP Binding Cassette Transporter, Subfamily B, Member 1Cell Cycle ProteinsCell SurvivalDNADNA-Binding ProteinsDNA Breaks, Double-StrandedDNA DamageDNA RepairDNA ReplicationDNA Topoisomerases, Type IIDrug Resistance, NeoplasmEtoposideFlow CytometryAntigens, NeoplasmAntineoplastic Agents, PhytogenicATP Binding Cassette Transporter, Subfamily B, Member 1Cell Cycle ProteinsDNADNA-Binding ProteinsDNA Topoisomerases, Type IIEtoposideTumor Suppressor Proteins

Identifiers

PMID19858003
PMCPMC5527959
OpenAlexW2074882853

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.