Evidence map›Paper›PMID 24503569›Full record

ArticlePLoS biology2014

An equatorial contractile mechanism drives cell elongation but not cell division.

Ivonne M Sehring, Bo Dong, Elsa Denker, Punit Bhattachan, Wei Deng, Birthe T Mathiesen, Di Jiang

Open access · goldAbstract read
In one paragraph

Article in PLoS biology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
2.0field-weighted citation impact, top 16% 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

23 citing papers in PubMed, 45 citations in OpenAlex.

  1. Article
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  4. Physics of notochord tube expansion in ascidians.Proceedings of the National Academy of Sciences of the United States of America · 2025
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  11. Article
  12. Polarity Establishment and Maintenance in Ascidian Notochord.Frontiers in cell and developmental biology · 2020
    Review
  13. Review
  14. 14-3-3εa directs the pulsatile transport of basal factors toward the apical domain for lumen growth in tubulogenesis.Proceedings of the National Academy of Sciences of the United States of America · 2018
    Article
  15. Review
  16. Transgenic Techniques for Investigating Cell Biology During Development.Advances in experimental medicine and biology · 2018
    Review
  17. Article
  18. Review
  19. Article
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors at 1 institution in 1 country.

Ivonne M SehringSars International Centre for Marine Molecular Biology, University of Bergen, Bergen, Norway.
Bo DongSars International Centre for Marine Molecular Biology, University of Bergen, Bergen, Norway.
Elsa DenkerSars International Centre for Marine Molecular Biology, University of Bergen, Bergen, Norway.
Punit BhattachanSars International Centre for Marine Molecular Biology, University of Bergen, Bergen, Norway.
Wei DengSars International Centre for Marine Molecular Biology, University of Bergen, Bergen, Norway.
Birthe T MathiesenSars International Centre for Marine Molecular Biology, University of Bergen, Bergen, Norway.
Di JiangSars International Centre for Marine Molecular Biology, University of Bergen, Bergen, Norway.
University of Bergen · NO

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Cell shape changes and proliferation are two fundamental strategies for morphogenesis in animal development. During embryogenesis of the simple chordate Ciona intestinalis, elongation of individual notochord cells constitutes a crucial stage of notochord growth, which contributes to the establishment of the larval body plan. The mechanism of cell elongation is elusive. Here we show that although notochord cells do not divide, they use a cytokinesis-like actomyosin mechanism to drive cell elongation. The actomyosin network forming at the equator of each notochord cell includes phosphorylated myosin regulatory light chain, α-actinin, cofilin, tropomyosin, and talin. We demonstrate that cofilin and α-actinin are two crucial components for cell elongation. Cortical flow contributes to the assembly of the actomyosin ring. Similar to cytokinetic cells, membrane blebs that cause local contractions form at the basal cortex next to the equator and participate in force generation. We present a model in which the cooperation of equatorial actomyosin ring-based constriction and bleb-associated contractions at the basal cortex promotes cell elongation. Our results demonstrate that a cytokinesis-like contractile mechanism is co-opted in a completely different developmental scenario to achieve cell shape change instead of cell division. We discuss the occurrences of actomyosin rings aside from cell division, suggesting that circumferential contraction is an evolutionally conserved mechanism to drive cell or tissue elongation.

Indexed as

CytokinesisActin Depolymerizing FactorsActininActomyosinAnimalsCell MembraneCell ShapeCiona intestinalisEmbryo, NonmammalianNotochordProtein MultimerizationActin Depolymerizing FactorsActininActomyosin

Identifiers

PMID24503569
PMCPMC3913557
OpenAlexW1999586959

What OpenQuestion holds

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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.