Evidence map›Paper›PMID 32435797›Full record

ArticleThe Journal of cell biology2020

Individual kinetochore-fibers locally dissipate force to maintain robust mammalian spindle structure.

Alexandra F Long, Pooja Suresh, Sophie Dumont

Open access · bronzeAbstract readVideo-Audio Media
In one paragraph

Article in The Journal of cell biology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
2.7field-weighted citation impact, top 10% 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

19 citing papers in PubMed, 33 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Optimal strategies for correcting merotelic chromosome attachments in anaphase.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  8. Article
  9. Article
  10. Mechanisms underlying spindle assembly and robustness.Nature reviews. Molecular cell biology · 2023
    Review
  11. Article
  12. Double-checking chromosome segregation.The Journal of cell biology · 2023
    Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. 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.

Alexandra F LongTetrad Graduate Program, University of California, San Francisco, San Francisco, CA.
Pooja SureshBiophysics Graduate Program, University of California, San Francisco, San Francisco, CA.
Sophie DumontTetrad Graduate Program, University of California, San Francisco, San Francisco, CA.
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

At cell division, the mammalian kinetochore binds many spindle microtubules that make up the kinetochore-fiber. To segregate chromosomes, the kinetochore-fiber must be dynamic and generate and respond to force. Yet, how it remodels under force remains poorly understood. Kinetochore-fibers cannot be reconstituted in vitro, and exerting controlled forces in vivo remains challenging. Here, we use microneedles to pull on mammalian kinetochore-fibers and probe how sustained force regulates their dynamics and structure. We show that force lengthens kinetochore-fibers by persistently favoring plus-end polymerization, not by increasing polymerization rate. We demonstrate that force suppresses depolymerization at both plus and minus ends, rather than sliding microtubules within the kinetochore-fiber. Finally, we observe that kinetochore-fibers break but do not detach from kinetochores or poles. Together, this work suggests an engineering principle for spindle structural homeostasis: different physical mechanisms of local force dissipation by the k-fiber limit force transmission to preserve robust spindle structure. These findings may inform how other dynamic, force-generating cellular machines achieve mechanical robustness.

Indexed as

Chromosome SegregationMechanotransduction, CellularAnimalsCell LineDipodomysEpithelial CellsKidneyKinetochoresSpindle ApparatusStress, MechanicalTime FactorsTubulinTubulin

Identifiers

PMID32435797
PMCPMC7401803
OpenAlexW3027388204

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-SA
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.