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Related Experiment Video

Updated: Mar 19, 2026

Measuring the Mechanical Properties of Living Cells Using Atomic Force Microscopy
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Cell stiffness determined by atomic force microscopy and its correlation with cell motility.

Qing Luo1, Dongdong Kuang1, Bingyu Zhang1

  • 1Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400044, People's Republic of China.

Biochimica Et Biophysica Acta
|June 12, 2016
PubMed
Summary

Cell stiffness, measured by atomic force microscopy (AFM), is linked to cell motility. While often softer, some motile cells are stiffer, a debate this review explores.

Keywords:
Atomic force microscopyCytoskeletonMotilityNuclear stiffnessStiffnessYoung's modulus

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Area of Science:

  • Biophysics
  • Cell Biology
  • Biomechanics

Background:

  • Cell stiffness is a key mechanical property influencing cell motility.
  • Atomic Force Microscopy (AFM) quantifies cell stiffness via Young's modulus.
  • Young's modulus is a potential biomarker for cell metastasis, with cancer cells often softer.

Purpose of the Study:

  • To review correlations between cell stiffness and motility.
  • To discuss determinants of AFM-measured cell stiffness.
  • To explain conflicting evidence on cell stiffness and motility.

Main Methods:

  • Literature review of AFM studies on cell stiffness and motility.
  • Analysis of factors influencing AFM measurements (cytoskeleton, nuclear stiffness, methodology).
  • Synthesis of existing data to propose a correlation model.

Main Results:

  • AFM-determined Young's modulus is influenced by cytoskeleton and detection parameters.
  • Young's modulus is a reliable metastasis biomarker but less so for modified motility.
  • Conflicting data suggests motility-stiffness correlation is complex.

Conclusions:

  • Cell stiffness is a critical factor in cell motility.
  • Methodological factors significantly impact AFM-derived Young's modulus.
  • Further research is needed to resolve the debate on cell stiffness and motility.