Evidence map›Paper›PMID 20660156›Full record

ArticleMolecular biology of the cell2010

Cortical mechanics and meiosis II completion in mammalian oocytes are mediated by myosin-II and Ezrin-Radixin-Moesin (ERM) proteins.

Stephanie M Larson, Hyo J Lee, Pei-hsuan Hung, Lauren M Matthews, Douglas N Robinson, Janice P Evans

Abstract read
In one paragraph

Article in Molecular biology of the cell, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 65 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
65citing papers in PubMed, 1 pooled it
4.1field-weighted citation impact, top 6% 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

65 citing papers in PubMed, 1 synthesis or guideline pooled it, 136 citations in OpenAlex.

  1. Biomechanics and mechanical signaling in the ovary: a systematic review.Journal of assisted reproduction and genetics · 2018
    Pooled it
  2. Article
  3. Article
  4. From Cytoskeletal Remodeling to Oocyte Quality: The Emerging Role of Mechanics.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026
    Review
  5. Article
  6. Article
  7. Review
  8. Article
  9. Article
  10. Review
  11. Article
  12. Article
  13. Review
  14. Mechanical Characterization of Murine Oocytes by Atomic Force Microscopy.Methods in molecular biology (Clifton, N.J.) · 2024
    Article
  15. Review
  16. Article
  17. Article
  18. Review
  19. Article
  20. Article

5 more citing papers are in PubMed but not listed here.

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 1 institution in 1 country.

Stephanie M LarsonDepartment of Biochemistry and Molecular Biology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD 21205, USA.
Hyo J Lee
Pei-hsuan Hung
Lauren M Matthews
Douglas N Robinson
Janice P Evans
Johns Hopkins University · US

Funding

The Biochemical Basis for the Mechanics of CytokinesisR01GM066817 · NIGMS · JOHNS HOPKINS UNIVERSITY · PI ROBINSON, DOUGLAS N · 2003 to 2025
$7.3M
Cell Adhesion Molecules of Mammalian FertilizationR01HD037696 · NICHD · JOHNS HOPKINS UNIVERSITY · PI EVANS, JANICE P · 2004 to 2008
$1.8M
THE MEMBRANE BLOCK TO POLYSPERMY IN MAMMALIAN EGGSR01HD045671 · NICHD · JOHNS HOPKINS UNIVERSITY · PI EVANS, JANICE P · 2005 to 2009
$1.3M
CELL ADHESION MOLECULES OF MAMMALIAN FERTILIZATIONR29HD037696 · NICHD · JOHNS HOPKINS UNIVERSITY · PI EVANS, JANICE P · 1998 to 2002
$347k
NICHD NIH HHS HD037696NICHD NIH HHS HD045671NICHD NIH HHS R01 HD037696NICHD NIH HHS R01 HD045671NICHD NIH HHS R29 HD037696NIGMS NIH HHS GM066817NIGMS NIH HHS R01 GM066817
6 · The paper itself

Abstract

Cell division is inherently mechanical, with cell mechanics being a critical determinant governing the cell shape changes that accompany progression through the cell cycle. The mechanical properties of symmetrically dividing mitotic cells have been well characterized, whereas the contribution of cellular mechanics to the strikingly asymmetric divisions of female meiosis is very poorly understood. Progression of the mammalian oocyte through meiosis involves remodeling of the cortex and proper orientation of the meiotic spindle, and thus we hypothesized that cortical tension and stiffness would change through meiotic maturation and fertilization to facilitate and/or direct cellular remodeling. This work shows that tension in mouse oocytes drops about sixfold during meiotic maturation from prophase I to metaphase II and then increases ∼1.6-fold upon fertilization. The metaphase II egg is polarized, with tension differing ∼2.5-fold between the cortex over the meiotic spindle and the opposite cortex, suggesting that meiotic maturation is accompanied by assembly of a cortical domain with stiffer mechanics as part of the process to achieve asymmetric cytokinesis. We further demonstrate that actin, myosin-II, and the ERM (Ezrin/Radixin/Moesin) family of proteins are enriched in complementary cortical domains and mediate cellular mechanics in mammalian eggs. Manipulation of actin, myosin-II, and ERM function alters tension levels and also is associated with dramatic spindle abnormalities with completion of meiosis II after fertilization. Thus, myosin-II and ERM proteins modulate mechanical properties in oocytes, contributing to cell polarity and to completion of meiosis.

Indexed as

ActinsAnimalsCell PolarityCytoskeletal ProteinsEzrinFemaleHumansMeiosisMembrane ProteinsMiceMicrofilament ProteinsMyosin Type IIOocytesSpindle ApparatusStress, MechanicalActinsCytoskeletal ProteinsEzrinMembrane ProteinsMicrofilament ProteinsmoesinMyosin Type IIradixin

Identifiers

PMID20660156
PMCPMC2938384
OpenAlexW2102534728

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.