Evidence map›Paper›PMID 31849090›Full record

ArticleThe EMBO journal2020

Polo regulates Spindly to prevent premature stabilization of kinetochore-microtubule attachments.

João Barbosa, Torcato Martins, Tanja Bange, Li Tao, Carlos Conde, Claudio Sunkel

Open access · bronzeAbstract read
In one paragraph

Article in The EMBO journal, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
2.2field-weighted citation impact, top 14% 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

17 citing papers in PubMed, 32 citations in OpenAlex.

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  11. Review
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  13. Computer simulation of merotelic kinetochore-microtubule attachments: corona size is more important than other cell parameters.Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology · 2021
    Article
  14. Article
  15. Article
  16. RZZ-SPINDLY-DYNEIN: you got to keep 'em separated.Cell cycle (Georgetown, Tex.) · 2020
    Review
  17. 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 4 institutions in 4 countries.

João BarbosaIBMC-Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal.
Torcato MartinsDepartment of Genetics, University of Cambridge, Cambridge, UK.
Tanja BangeMPI für molekulare Physiologie, Dortmund, Germany.
Li TaoDepartment of Biology, University of Hawaii, Hilo, HI, USA.
Carlos CondeIBMC-Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal.
Claudio SunkelIBMC-Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal.ORCID 0000-0002-2963-9380
Universidade do Porto · PTMax Planck Institute of Molecular Physiology · DEUniversity of Cambridge · GBUniversity of Hawaii at Hilo · US

Funding

UH Hilo COP A&RP20GM103466 · NIGMS · UNIVERSITY OF HAWAII AT MANOA · PI Peter R Hoffmann · 2012 to 2026
$60.3M
Fundação para a Ciência e Tecnologia IF/01755/2014Fundação para a Ciência e Tecnologia PEst-C/SAU/LA0002/2013Fundação para a Ciência e Tecnologia PTDC7BEX-BCM/1921/2014-PR041602Fundação para a Ciência e Tecnologia SFRH/BD/87871/2012NIGMS NIH HHS P20 GM103466Norte2020 Norte-01-0145-FEDER-000029
6 · The paper itself

Abstract

Accurate chromosome segregation in mitosis requires sister kinetochores to bind to microtubules from opposite spindle poles. The stability of kinetochore-microtubule attachments is fine-tuned to prevent or correct erroneous attachments while preserving amphitelic interactions. Polo kinase has been implicated in both stabilizing and destabilizing kinetochore-microtubule attachments. However, the mechanism underlying Polo-destabilizing activity remains elusive. Here, resorting to an RNAi screen in Drosophila for suppressors of a constitutively active Polo mutant, we identified a strong genetic interaction between Polo and the Rod-ZW10-Zwilch (RZZ) complex, whose kinetochore accumulation has been shown to antagonize microtubule stability. We find that Polo phosphorylates Spindly and impairs its ability to bind to Zwilch. This precludes dynein-mediated removal of the RZZ from kinetochores and consequently delays the formation of stable end-on attachments. We propose that high Polo-kinase activity following mitotic entry directs the RZZ complex to minimize premature stabilization of erroneous attachments, whereas a decrease in active Polo in later mitotic stages allows the formation of stable amphitelic spindle attachments. Our findings demonstrate that Polo tightly regulates the RZZ-Spindly-dynein module during mitosis to ensure the fidelity of chromosome segregation.

Indexed as

MitosisSpindle ApparatusAnimalsCell Cycle ProteinsChromosome SegregationDrosophila melanogasterDrosophila ProteinsDyneinsFemaleKinetochoresMaleMicrotubulesProtein Serine-Threonine KinasesSignal TransductionCell Cycle ProteinsDrosophila ProteinsDyneinspolo protein, DrosophilaProtein Serine-Threonine Kinaseskinetochore attachmentsmitosisPoloRZZSpindly

Identifiers

PMID31849090
PMCPMC6960449
OpenAlexW2995415729

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.