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Related Experiment Videos

Cell migration through small gaps.

Claudia A Brunner1, Allen Ehrlicher, Bernd Kohlstrunk

  • 1Institute for Soft Matter Physics, University of Leipzig, Linnéstrasse 5, 04103, Leipzig, Germany.

European Biophysics Journal : EBJ
|July 28, 2006
PubMed
Summary
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Migrating cells, like keratocytes, generate forces up to 15 nN to navigate obstacles. These cells can withstand significant compression, adapting shape to squeeze through narrow spaces as small as 500 nm.

Area of Science:

  • Cell Biology
  • Biophysics

Background:

  • Cell motility is crucial for biological processes including immune response, wound healing, and cancer metastasis.
  • During these processes, cells must navigate complex environments by squeezing through cellular layers.

Purpose of the Study:

  • To quantify the forces generated by migrating cells.
  • To investigate the mechanical properties of cells, specifically their ability to adapt shape under stress.
  • To understand the physical limitations and capabilities of cell migration through confined spaces.

Main Methods:

  • Utilized advanced microscopy techniques to observe and measure the forces exerted by individual migrating keratocytes.
  • Applied controlled mechanical stresses to assess cell morphology and velocity changes.
  • Measured cell deformation during passage through micro-fabricated constrictions.

Related Experiment Videos

Main Results:

  • Migrating keratocytes generate forward forces up to 15 nN, with 34 nN capable of stalling motion.
  • Cells maintain morphology and velocity under compression stresses up to 1,165 Pa.
  • Keratocytes can deform vertically by up to 80% to traverse gaps as narrow as 500 nm.

Conclusions:

  • Keratocytes exhibit remarkable force generation and shape adaptability, essential for navigating dense tissues.
  • The study provides quantitative insights into the biophysical mechanisms underlying cell migration and tissue penetration.
  • Findings contribute to understanding cellular mechanics in physiological and pathological contexts.