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Studying the Cytoskeleton01:17

Studying the Cytoskeleton

The cytoskeletal architecture can be studied using different microscopic and biochemical techniques. Electron microscopy was instrumental in discovering the cytoskeletal architecture around the 1960s, which allowed obtaining structural information at a high-resolution level. However, the sample preparation procedure often limits this ability in biological samples. Several protocols have been developed over the years to optimize sample preparation. In one of the protocols known as rotary...

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Updated: May 11, 2026

Measuring the Mechanical Properties of Living Cells Using Atomic Force Microscopy
08:41

Measuring the Mechanical Properties of Living Cells Using Atomic Force Microscopy

Published on: June 27, 2013

Atomic Force Microscopy Reveals Differences In Mechanical Properties Linked To Cortical Structure In Mouse And Human

Rose Bulteau1,2, Lucie Barbier2, Guillaume Lamour1

  • 1LAMBE, Univ Evry, CNRS, Université Paris-Saclay, Évry-Courcouronnes, 91025, France.

Small (Weinheim an Der Bergstrasse, Germany)
|March 31, 2025
PubMed
Summary
This summary is machine-generated.

Oocyte mechanical properties, influenced by actin cortex thickness, impact oocyte quality. Maternal age affects mechanics and cortex structure, with species-specific differences observed in human and mouse oocyte development.

Keywords:
actomyosin cortexatomic force microscopybiomechanicscortical tensionelastic modulusoocytes

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Last Updated: May 11, 2026

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Area of Science:

  • Cellular mechanics
  • Developmental biology
  • Reproductive science

Background:

  • Cell mechanical properties are crucial for biological processes like oocyte development.
  • Actomyosin cortex remodeling regulates cortical tension for optimal oocyte quality.
  • The relationship between mechanical parameters and cortex structure in mammalian oocytes is not well understood.

Purpose of the Study:

  • To investigate the link between oocyte mechanical properties and cortex organization.
  • To develop a methodology combining multiple mechanical parameters using Atomic Force Microscopy.
  • To explore how maternal age and species differences affect oocyte mechanics and structure.

Main Methods:

  • Utilized Atomic Force Microscopy to measure multiple mechanical parameters.
  • Studied mouse oocytes across different developmental stages.
  • Analyzed engineered oocytes with specific cortex organizations.

Main Results:

  • A thin actin cortex correlated with stiff oocytes; a thick cortex correlated with softer oocytes.
  • Maternal age impacts mouse oocyte mechanics and cortex structure.
  • Mechanical property evolution differs between human and mouse oocyte development.

Conclusions:

  • Oocyte stiffness is inversely related to actin cortex thickness.
  • Maternal aging alters oocyte mechanics and cortex organization.
  • Species-specific differences exist in mammalian oocyte development and cortex structure.