Atomic Force Microscopy of height fluctuations of fibroblast cells

Details Atomic Force Microscopy of height fluctuations of fibroblast cells Atomic Force Microscopy of height fluctuations of fibroblast cells

2002-09-03

arxiv.org/abs/physics/0209007v1

Phys.Rev. E65 (2002) 041910

Physics

Biological Physics

6 pages, 5 figures, 1 table

Scientific paper

10.1103/PhysRevE.65.041910

We investigated the nanometer scale height fluctuations of 3T3 fibroblast cells with the atomic force microscope (AFM) under physiological conditions. Correlation between these fluctuations and lateral cellular motility can be observed. Fluctuations measured on leading edges appear to be predominantly related to actin polymerization-depolymerization processes. We found fast (5 Hz) pulsatory behavior with 1--2 nm amplitude on a cell with low motility showing emphasized structure of stress fibres. Myosin driven contractions of stress fibres are thought to induce this pulsation.

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