Simulation and evaluation of 3D traction force microscopy

C.N. Holenstein, C.R. Lendi, Nino Wili and J.G. Snedeker

Computer Methods in Biomechanics and Biomedical Engineering, 2019, vol. 22, issue 8, 853-860

Abstract: Measuring cell-generated forces by Traction Force Microscopy (TFM) has become a standard tool in cell mechanobiology. Although widely used in two dimensional (2D) experiments, only a few methods exist to measure traction in three-dimensional (3D) cell culture, since 3D volumetric high-resolution microscopy and more demanding computational approaches are required. Although it is commonly known that the selected experimental and computational setup highly influence the quality and accuracy of the results, no existing methods can adequately assess the errors involved in this process. We present a fully integrated simulation and evaluation platform that allows one to simulate TFM images and quantify errors of an applied approach for traction stress reconstruction, in order to improve experiments that attempt to measure mechanical interaction in cellular systems. In this context, we show that a careful parameter selection can decrease the reconstructed traction error by up to 40%.

Date: 2019
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DOI: 10.1080/10255842.2019.1599866

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