Evidence map›Paper›PMID 28039324›Full record

ArticleNucleic acids research2017

Topoisomerase 3β is the major topoisomerase for mRNAs and linked to neurodevelopment and mental dysfunction.

Muzammil Ahmad, Weiping Shen, Wen Li, Yutong Xue, Sige Zou, Dongyi Xu, Weidong Wang

Open access · goldAbstract read
In one paragraph

Article in Nucleic acids research, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 50 papers.

0numbers the graph read from it
0cells of the map it votes in
50citing papers in PubMed
2.3field-weighted citation impact, top 11% 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

50 citing papers in PubMed, 58 citations in OpenAlex.

  1. Article
  2. Current aging science · 2026
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  9. Review
  10. Topoisomerase IIIβ protects from tumorigenesis and immune dysregulation.bioRxiv : the preprint server for biology · 2025
    Article
  11. Review
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  17. Article
  18. Identification and characterization of topoisomerase III beta poisons.Proceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  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

7 authors at 2 institutions in 2 countries.

Muzammil AhmadGenome Instability and Chromatin-Remodeling Section, National Institutes of Health, 251 Bayview Boulevard, Baltimore, MD 21224, USA.
Weiping ShenGenome Instability and Chromatin-Remodeling Section, National Institutes of Health, 251 Bayview Boulevard, Baltimore, MD 21224, USA.
Wen LiState Key Laboratory of Protein and Plant Gene Research, School of Life Sciences, Peking University, Beijing 100871, China.
Yutong XueGenome Instability and Chromatin-Remodeling Section, National Institutes of Health, 251 Bayview Boulevard, Baltimore, MD 21224, USA.
Sige ZouTranslational Gerontology Branch, National Institute on Aging, National Institutes of Health, 251 Bayview Boulevard, Baltimore, MD 21224, USA.
Dongyi XuState Key Laboratory of Protein and Plant Gene Research, School of Life Sciences, Peking University, Beijing 100871, China.
Weidong WangGenome Instability and Chromatin-Remodeling Section, National Institutes of Health, 251 Bayview Boulevard, Baltimore, MD 21224, USA.
National Institutes of Health · USPeking University · CN

Funding

Investigation of an RNA topoisomerase complex involved in Fragile X syndromeZIAAG000689 · NIA · NATIONAL INSTITUTE ON AGING · PI WANG, WEIDONG · 2011 to 2025
$6.9M
ISOLATION OF PROTEIN COMPLEX INVOLVED IN BLOOM SYNDROMEZ01AG000657 · NIA · NATIONAL INSTITUTE ON AGING · PI WANG, WEIDONG · 2000 to 2008
$636k
NIA NIH HHS Z01 AG000657
6 · The paper itself

Abstract

Human cells contain five topoisomerases in the nucleus and cytoplasm, but which one is the major topoisomerase for mRNAs is unclear. To date, Top3β is the only known topoisomerase that possesses RNA topoisomerase activity, binds mRNA translation machinery and interacts with an RNA-binding protein, FMRP, to promote synapse formation; and Top3β gene deletion has been linked to schizophrenia. Here, we show that Top3β is also the most abundant mRNA-binding topoisomerase in cells. Top3β, but not other topoisomerases, contains a distinctive RNA-binding domain; and deletion of this domain diminishes the amount of Top3β that associates with mRNAs, indicating that Top3β is specifically targeted to mRNAs by its RNA binding domain. Moreover, Top3β mutants lacking either its RNA-binding domain or catalytic residue fail to promote synapse formation, suggesting that Top3β requires both its mRNA-binding and catalytic activity to facilitate neurodevelopment. Notably, Top3β proteins bearing point mutations from schizophrenia and autism individuals are defective in association with FMRP; whereas one of the mutants is also deficient in binding mRNAs, catalyzing RNA topoisomerase reaction, and promoting synapse formation. Our data suggest that Top3β is the major topoisomerase for mRNAs, and requires both RNA binding and catalytic activity to promote neurodevelopment and prevent mental dysfunction.

Indexed as

AnimalsAutistic DisorderDNA Topoisomerases, Type IDrosophilaHEK293 CellsHumansNeuromuscular JunctionPoint MutationProtein DomainsRNA, MessengerSchizophreniaSynapsesDNA Topoisomerases, Type IRNA, Messenger

Identifiers

PMID28039324
PMCPMC5389537
OpenAlexW2565463867

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.