Evidence map›Paper›PMID 32191206›Full record

ArticleeLife2020

Microneedle manipulation of the mammalian spindle reveals specialized, short-lived reinforcement near chromosomes.

Pooja Suresh, Alexandra F Long, Sophie Dumont

Open access · goldAbstract read
In one paragraph

Article in eLife, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed
3.2field-weighted citation impact, top 8% 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

29 citing papers in PubMed, 47 citations in OpenAlex.

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  16. Mechanisms underlying spindle assembly and robustness.Nature reviews. Molecular cell biology · 2023
    Review
  17. Review
  18. Article
  19. Article
  20. Morphological growth dynamics, mechanical stability, and active microtubule mechanics underlying spindle self-organization.Proceedings of the National Academy of Sciences of the United States of America · 2022
    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

3 authors at 1 institution in 1 country.

Pooja SureshBiophysics Graduate Program, University of California, San Francisco, San Francisco, United States.ORCID 0000-0002-7793-4827
Alexandra F LongDepartment of Cell and Tissue Biology, University of California, San Francisco, San Francisco, United States.ORCID 0000-0002-2471-6797
Sophie DumontBiophysics Graduate Program, University of California, San Francisco, San Francisco, United States.ORCID 0000-0002-8283-1523
University of California, San Francisco · US

Funding

STRUCTURAL BIOLOGY TRAINING PROGRAMT32GM008284 · NIGMS · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI KORTEMME, TANJA · 1988 to 2022
$10.1M
Microscopy system upgradeR35GM136420 · NIGMS · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI Sophie Dumont · 2020 to 2026
$4.6M
Rewiring cellular architecture to probe mechanical signal processing at kinetochoresDP2GM119177 · NIGMS · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI DUMONT, SOPHIE · 2015 to 2015
$2.4M
Mechanics of the dynamic mammalian kinetochore-microtubule interfaceR01GM134132 · NIGMS · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI DUMONT, SOPHIE · 2019 to 2019
$364k
NIGMS NIH HHS DP2 GM119177NIGMS NIH HHS R01 GM134132NIGMS NIH HHS R35 GM136420NIGMS NIH HHS T32 GM008284
6 · The paper itself

Abstract

The spindle generates force to segregate chromosomes at cell division. In mammalian cells, kinetochore-fibers connect chromosomes to the spindle. The dynamic spindle anchors kinetochore-fibers in space and time to move chromosomes. Yet, how it does so remains poorly understood as we lack tools to directly challenge this anchorage. Here, we adapt microneedle manipulation to exert local forces on the spindle with spatiotemporal control. Pulling on kinetochore-fibers reveals the preservation of local architecture in the spindle-center over seconds. Sister, but not neighbor, kinetochore-fibers remain tightly coupled, restricting chromosome stretching. Further, pulled kinetochore-fibers pivot around poles but not chromosomes, retaining their orientation within 3 μm of chromosomes. This local reinforcement has a 20 s lifetime, and requires the microtubule crosslinker PRC1. Together, these observations indicate short-lived, specialized reinforcement in the spindle center. This could help protect chromosome attachments from transient forces while allowing spindle remodeling, and chromosome movements, over longer timescales.

Indexed as

AnimalsCell LineChromosomesKinetochoresMarsupialiaSpindle ApparatusTubulinTubulincell biologydynamicskinetochore-fibermammalianmechanicsmicroneedlephysics of living systemsspindle

Identifiers

PMID32191206
PMCPMC7117910
OpenAlexW3011149575

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.