Evidence map›Paper›PMID 21730185›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2011

Hydrodynamic property of the cytoplasm is sufficient to mediate cytoplasmic streaming in the Caenorhabditis elegans embryo.

Ritsuya Niwayama, Kyosuke Shinohara, Akatsuki Kimura

Abstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed
2.6field-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

34 citing papers in PubMed, 87 citations in OpenAlex.

  1. Article
  2. Article
  3. Micro-Scale Topography Triggers Dynamic 3D Nuclear Deformations.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025
    Article
  4. Visualization and Analyses of Cytoplasmic Streaming in C. elegans Zygotes.Methods in molecular biology (Clifton, N.J.) · 2025
    Article
  5. Fly embryo nuclei riding on two-fluid flow.Proceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  6. Article
  7. Two-fluid dynamics and micron-thin boundary layers shape cytoplasmic flows in earlyProceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  8. Article
  9. Review
  10. Size- and position-dependent cytoplasm viscoelasticity through hydrodynamic interactions with the cell surface.Proceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Going with the flow: insights fromPhilosophical transactions of the Royal Society of London. Series B, Biological sciences · 2020
    Review
  17. Article
  18. Article
  19. Review
  20. Review
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 2 institutions in 1 country.

Ritsuya NiwayamaDepartment of Genetics, School of Life Science, The Graduate University for Advanced Studies (Sokendai), Yata 1111, Mishima, Shizuoka 411-8540, Japan.
Kyosuke Shinohara
Akatsuki Kimura
The Graduate University for Advanced Studies, SOKENDAI · JPOsaka University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Cytoplasmic streaming is a type of intracellular transport widely seen in nature. Cytoplasmic streaming in Caenorhabditis elegans at the one-cell stage is bidirectional; the flow near the cortex ("cortical flow") is oriented toward the anterior, whereas the flow in the central region ("cytoplasmic flow") is oriented toward the posterior. Both cortical flow and cytoplasmic flow depend on non-muscle-myosin II (NMY-2), which primarily localizes in the cortex. The manner in which NMY-2 proteins drive cytoplasmic flow in the opposite direction from remote locations has not been fully understood. In this study, we demonstrated that the hydrodynamic properties of the cytoplasm are sufficient to mediate the forces generated by the cortical myosin to drive bidirectional streaming throughout the cytoplasm. We quantified the flow velocities of cytoplasmic streaming using particle image velocimetry (PIV) and conducted a three-dimensional hydrodynamic simulation using the moving particle semiimplicit method. Our simulation quantitatively reconstructed the quantified flow velocity distribution resolved through PIV analysis. Furthermore, our PIV analyses detected microtubule-dependent flows during the pronuclear migration stage. These flows were reproduced via hydrodynamic interactions between moving pronuclei and the cytoplasm. The agreement of flow dynamics in vivo and in simulation indicates that the hydrodynamic properties of the cytoplasm are sufficient to mediate cytoplasmic streaming in C. elegans embryos.

Indexed as

HydrodynamicsAnimalsCaenorhabditis elegansCaenorhabditis elegans ProteinsComputer SimulationCytoplasmCytoplasmic StreamingDNA PrimersEmbryo, NonmammalianMicroscopy, ConfocalMicrotubulesMyosin Heavy ChainsRheologyRNA InterferenceCaenorhabditis elegans ProteinsDNA PrimersMyosin Heavy ChainsNMY-2 protein, C elegans

Identifiers

PMID21730185
PMCPMC3141991
OpenAlexW2009530944

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.