Johnson-Kendall-Roberts theory applied to living cells

Details Johnson-Kendall-Roberts theory applied to living cells Johnson-Kendall-Roberts theory applied to living cells

2005-10-03

arxiv.org/abs/physics/0510016v1

Physical Review Letters 94 (2005) 028102-1

Physics

Biological Physics

Scientific paper

10.1103/PhysRevLett.94.028102

Johnson-Kendall-Roberts (JKR) theory is an accurate model for strong adhesion energies of soft slightly deformable material. Little is known about the validity of this theory on complex systems such as living cells. We have addressed this problem using a depletion controlled cell adhesion and measured the force necessary to separate the cells with a micropipette technique. We show that the cytoskeleton can provide the cells with a 3D structure that is sufficiently elastic and has a sufficiently low deformability for JKR theory to be valid. When the cytoskeleton is disrupted, JKR theory is no longer applicable.

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