Evidence map›Paper›PMID 17578914›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2007

Roles of DNA topoisomerase II isozymes in chemotherapy and secondary malignancies.

Anna M Azarova, Yi Lisa Lyu, Chao-Po Lin, Yuan-Chin Tsai, Johnson Yiu-Nam Lau, James C Wang, Leroy F Liu

Open access · greenAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 132 papers.

0numbers the graph read from it
0cells of the map it votes in
132citing papers in PubMed
6.0field-weighted citation impact, top 3% 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

132 citing papers in PubMed, 288 citations in OpenAlex.

  1. Article
  2. Article
  3. PDS5A and TOP2B cooperate for chromatin recruitment via CTCF.bioRxiv : the preprint server for biology · 2026
    Article
  4. Article
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  6. Article
  7. Article
  8. Article
  9. Article
  10. Genome Instability Induced by Topoisomerase Misfunction.International journal of molecular sciences · 2024
    Review
  11. Article
  12. Article
  13. Article
  14. Article
  15. Review
  16. Review
  17. Article
  18. Naturally mutagenic sequence diversity in a human type II topoisomerase.Proceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  19. Review
  20. Article

72 more citing papers are in PubMed but not listed here.

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

7 authors at 1 institution in 1 country.

Anna M AzarovaDepartment of Pharmacology, University of Medicine and Dentistry of New Jersey, 675 Hoes Lane, Piscataway, NJ 08854, USA.
Yi Lisa Lyu
Chao-Po Lin
Yuan-Chin Tsai
Johnson Yiu-Nam Lau
James C Wang
Leroy F Liu
Harvard University · US

Funding

Mechanism of Action of TOP2-Directed Anticancer DrugsR01CA102463 · NCI · UNIV OF MED/DENT NJ-R W JOHNSON MED SCH · PI LIU, LEROY F · 2004 to 2012
$2.6M
DNA TOPOISOMERASES--BIOLOGICAL FUNCTIONS &MECHANISMSR01GM024544 · NIGMS · HARVARD UNIVERSITY · PI WANG, JAMES C · 1985 to 2003
$2.2M
DNA TOPOISOMERASES: BIOLOGICAL FUNCTIONS AND MECHANISMSR37GM024544 · NIGMS · HARVARD UNIVERSITY · PI WANG, JAMES C · 1990 to 1999
–
NCI NIH HHS CA102463NCI NIH HHS R01 CA102463NIGMS NIH HHS GM24544NIGMS NIH HHS R01 GM024544NIGMS NIH HHS R37 GM024544
6 · The paper itself

Abstract

Drugs that target DNA topoisomerase II (Top2), including etoposide (VP-16), doxorubicin, and mitoxantrone, are among the most effective anticancer drugs in clinical use. However, Top2-based chemotherapy has been associated with higher incidences of secondary malignancies, notably the development of acute myeloid leukemia in VP-16-treated patients. This association is suggestive of a link between carcinogenesis and Top2-mediated DNA damage. We show here that VP-16-induced carcinogenesis involves mainly the beta rather than the alpha isozyme of Top2. In a mouse skin carcinogenesis model, the incidence of VP-16-induced melanomas in the skin of 7,12-dimethylbenz[a]anthracene-treated mice is found to be significantly higher in TOP2beta(+) than in skin-specific top2beta-knockout mice. Furthermore, VP-16-induced DNA sequence rearrangements and double-strand breaks (DSBs) are found to be Top2beta-dependent and preventable by cotreatment with a proteasome inhibitor, suggesting the importance of proteasomal degradation of the Top2beta-DNA cleavage complexes in VP-16-induced DNA sequence rearrangements. VP-16 cytotoxicity in transformed cells expressing both Top2 isozymes is, however, found to be primarily Top2alpha-dependent. These results point to the importance of developing Top2alpha-specific anticancer drugs for effective chemotherapy without the development of treatment-related secondary malignancies.

Indexed as

AnimalsAntineoplastic AgentsDisease Models, AnimalDNA DamageDNA Topoisomerases, Type IIDrug DesignEtoposideIsoenzymesMelanoma, ExperimentalMiceMice, KnockoutNeoplasms, Second PrimaryProtease InhibitorsTopoisomerase II InhibitorsAntineoplastic AgentsDNA Topoisomerases, Type IIEtoposideIsoenzymesProtease InhibitorsTopoisomerase II Inhibitors

Identifiers

PMID17578914
PMCPMC1904155
OpenAlexW2009057362

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.