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Related Experiment Video

Updated: May 26, 2026

Measurement of Aggregate Cohesion by Tissue Surface Tensiometry
12:49

Measurement of Aggregate Cohesion by Tissue Surface Tensiometry

Published on: April 8, 2011

Estimating intercellular surface tension by laser-induced cell fusion.

Masashi Fujita1, Shuichi Onami

  • 1Laboratory for Developmental Dynamics, RIKEN Quantitative Biology Center, 2-2-3 Minatojima-minamimachi, Chuo-ku, Kobe, Hyogo 650-0047, Japan.

Physical Biology
|December 8, 2011
PubMed
Summary

Researchers developed a new method to measure intercellular surface tension in cells. This technique uses laser-induced cell fusion and cytoplasmic flow to determine tension, offering a more accessible approach for cellular mechanics studies.

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Area of Science:

  • Cellular mechanics
  • Biophysics
  • Developmental biology

Background:

  • Intercellular surface tension is crucial for cellular mechanics.
  • Existing methods for measuring this tension are limited by the difficulty of determining whole-cell viscosity.

Purpose of the Study:

  • To develop a novel method for estimating intercellular surface tension at single-cell resolution.
  • To overcome the limitations of conventional measurement techniques.

Main Methods:

  • Utilizing laser-induced cell fusion to create a pressure difference between cells.
  • Analyzing cytoplasmic flow during fusion to estimate tension.
  • Measuring cytoplasmic viscosity using established technologies.

Main Results:

  • Successfully estimated intercellular surface tension in two-cell-stage Caenorhabditis elegans embryos.
  • Determined the intercellular surface tension to be in the range of 30-90 µN m⁻¹.
  • Results showed close agreement with previously measured cell-medium surface tensions.

Conclusions:

  • The novel method provides an accessible way to measure absolute intercellular surface tension.
  • This technique advances the understanding of cellular mechanics and forces at the single-cell level.
  • The findings are relevant for developmental biology and biophysics research.