Evidence map›Paper›PMID 31671674›Full record

ReviewGenes2019

Type II DNA Topoisomerases Cause Spontaneous Double-Strand Breaks in Genomic DNA.

Suguru Morimoto, Masataka Tsuda, Heeyoun Bunch, Hiroyuki Sasanuma, Caroline Austin, Shunichi Takeda

Open access · goldAbstract readReview
In one paragraph

Review in Genes, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 47 papers.

0numbers the graph read from it
0cells of the map it votes in
47citing papers in PubMed
5.0field-weighted citation impact, top 4% 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

47 citing papers in PubMed, 82 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. DNA topological regulation in RNA polymerase II transcription.Cellular & molecular biology letters · 2026
    Review
  5. Article
  6. Article
  7. Article
  8. The landscape of structural variation in pediatric cancer.bioRxiv : the preprint server for biology · 2025
    Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Targeting and Monitoring Acute Myeloid Leukaemia with Nucleophosmin-1 (International journal of molecular sciences · 2023
    Review
  15. Article
  16. Article
  17. Article
  18. Review
  19. Article
  20. Article
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 3 institutions in 3 countries.

Suguru MorimotoDepartment of Radiation Genetics, Graduate School of Medicine, Kyoto University, Yoshida Konoe, Sakyo-ku, Kyoto 606-8501, Japan. morimoto.suguru.68c@kyoto-u.jp.
Masataka TsudaDepartment of Radiation Genetics, Graduate School of Medicine, Kyoto University, Yoshida Konoe, Sakyo-ku, Kyoto 606-8501, Japan. tsuda@rg.med.kyoto-u.ac.jp.
Heeyoun BunchDepartment of Applied Biosciences, College of Agriculture and Life Sciences, Kyungpook National University, Daegu 41566, Korea. hbunch@knu.ac.kr.
Hiroyuki SasanumaDepartment of Radiation Genetics, Graduate School of Medicine, Kyoto University, Yoshida Konoe, Sakyo-ku, Kyoto 606-8501, Japan. hiroysasa@rg.med.kyoto-u.ac.jp.
Caroline AustinThe Institute for Cell and Molecular Biosciences, the Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne NE2 4HH, UK. caroline.austin@newcastle.ac.uk.
Shunichi TakedaDepartment of Radiation Genetics, Graduate School of Medicine, Kyoto University, Yoshida Konoe, Sakyo-ku, Kyoto 606-8501, Japan. stakeda@rg.med.kyoto-u.ac.jp.
Kyoto University · JPKyungpook National University · KRNewcastle University · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Type II DNA topoisomerase enzymes (TOP2) catalyze topological changes by strand passage reactions. They involve passing one intact double stranded DNA duplex through a transient enzyme-bridged break in another (gated helix) followed by ligation of the break by TOP2. A TOP2 poison, etoposide blocks TOP2 catalysis at the ligation step of the enzyme-bridged break, increasing the number of stable TOP2 cleavage complexes (TOP2ccs). Remarkably, such pathological TOP2ccs are formed during the normal cell cycle as well as in postmitotic cells. Thus, this 'abortive catalysis' can be a major source of spontaneously arising DNA double-strand breaks (DSBs). TOP2-mediated DSBs are also formed upon stimulation with physiological concentrations of androgens and estrogens. The frequent occurrence of TOP2-mediated DSBs was previously not appreciated because they are efficiently repaired. This repair is performed in collaboration with BRCA1, BRCA2, MRE11 nuclease, and tyrosyl-DNA phosphodiesterase 2 (TDP2) with nonhomologous end joining (NHEJ) factors. This review first discusses spontaneously arising DSBs caused by the abortive catalysis of TOP2 and then summarizes proteins involved in repairing stalled TOP2ccs and discusses the genotoxicity of the sex hormones.

Indexed as

BRCA1 ProteinBRCA2 ProteinCell CycleDNADNA-Binding ProteinsDNA Breaks, Double-StrandedDNA DamageDNA End-Joining RepairDNA RepairDNA Topoisomerases, Type IIEndonucleasesGenome, HumanHumansMRE11 Homologue ProteinNuclear ProteinsPhosphoric Diester HydrolasesBRCA1 ProteinBRCA2 ProteinDNADNA-Binding ProteinsDNA Topoisomerases, Type IIEndonucleasesMRE11 Homologue ProteinMRE11 protein, humanNuclear ProteinsPhosphoric Diester HydrolasesPoly-ADP-Ribose Binding ProteinsTDP2 protein, humanTranscription FactorsBRCA1BRCA2breast cancercell cycleestrogengenotoxicityTopoisomerase IItranscription

Identifiers

PMID31671674
PMCPMC6895833
OpenAlexW2982414269

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.