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Updated: May 19, 2026

Easy and Accurate Mechano-profiling on Micropost Arrays
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Easy and Accurate Mechano-profiling on Micropost Arrays

Published on: November 17, 2015

Live-cell subcellular measurement of cell stiffness using a microengineered stretchable micropost array membrane.

Raymond H W Lam1, Shinuo Weng, Wei Lu

  • 1Integrated Biosystems and Biomechanics Laboratory, University of Michigan, Ann Arbor, MI 48109, USA.

Integrative Biology : Quantitative Biosciences From Nano to Macro
|September 1, 2012
PubMed
Summary

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Researchers developed a new technique to measure whole-cell stiffness with subcellular resolution. This method reveals how cell stiffness relates to cellular forces and spread area, highlighting the roles of actin and myosin II.

Area of Science:

  • Cellular biomechanics
  • Biophysics
  • Cellular mechanics

Background:

  • Cellular forces regulate cell structure and function.
  • Cell stiffness is crucial for force sensing and signal transduction.
  • Understanding cell mechanical properties is vital for cellular responses.

Purpose of the Study:

  • To report a novel whole-cell stiffness measurement technique with subcellular spatial resolution.
  • To enable quantitative control and real-time measurement of mechanical stimuli and cellular biomechanical responses.
  • To investigate the relationship between cell stiffness, cellular traction force, and cell spread area.

Main Methods:

  • Developed a microfabricated array of silicone elastomeric microposts on a stretchable membrane (mPAM).

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Published on: August 19, 2015

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Last Updated: May 19, 2026

Easy and Accurate Mechano-profiling on Micropost Arrays
10:25

Easy and Accurate Mechano-profiling on Micropost Arrays

Published on: November 17, 2015

Micropipette Aspiration of Substrate-attached Cells to Estimate Cell Stiffness
10:31

Micropipette Aspiration of Substrate-attached Cells to Estimate Cell Stiffness

Published on: September 27, 2012

Live Cell Imaging during Mechanical Stretch
07:42

Live Cell Imaging during Mechanical Stretch

Published on: August 19, 2015

  • Applied equibiaxial cell stretching forces using a computer-controlled vacuum.
  • Quantified local cell stretching forces and area increments via fluorescence microscopy and a computational scheme.
  • Measured whole-cell stiffness with subcellular resolution.

    • Main Results:

    • Demonstrated strong positive correlations between cell stiffness, cellular traction force, and cell spread area.
    • Illustrated the regulatory roles of actin polymerization in cell stiffness.
    • Highlighted the contribution of myosin II-mediated cytoskeleton contractility to cell stiffness.

    Conclusions:

    • The mPAM technique offers a new approach for whole-cell stiffness measurements with subcellular resolution.
    • This method can help elucidate complex biomechanical functions and force-sensing mechanisms in cells.
    • Findings have implications for designing improved materials in cell and tissue engineering.