Confocal reference free traction force microscopy

Martin Bergert, Tobias Lendenmann, Manuel Zündel, Alexander E. Ehret, Daniele Panozzo, Patrizia Richner, David K. Kim, Stephan J. P. Kress, David J. Norris, Olga Sorkine-Hornung, Edoardo Mazza, Dimos Poulikakos () and Aldo Ferrari ()
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Martin Bergert: ETH Zurich, Laboratory of Thermodynamics in Emerging Technologies
Tobias Lendenmann: ETH Zurich, Laboratory of Thermodynamics in Emerging Technologies
Manuel Zündel: ETH Zurich, Institute for Mechanical Systems
Alexander E. Ehret: ETH Zurich, Institute for Mechanical Systems
Daniele Panozzo: ETH Zurich, Institute for Visual Computing, Interactive Geometry Lab
Patrizia Richner: ETH Zurich, Laboratory of Thermodynamics in Emerging Technologies
David K. Kim: ETH Zurich, Optical Materials Engineering Laboratory
Stephan J. P. Kress: ETH Zurich, Optical Materials Engineering Laboratory
David J. Norris: ETH Zurich, Optical Materials Engineering Laboratory
Olga Sorkine-Hornung: ETH Zurich, Institute for Visual Computing, Interactive Geometry Lab
Edoardo Mazza: ETH Zurich, Institute for Mechanical Systems
Dimos Poulikakos: ETH Zurich, Laboratory of Thermodynamics in Emerging Technologies
Aldo Ferrari: ETH Zurich, Laboratory of Thermodynamics in Emerging Technologies

Nature Communications, 2016, vol. 7, issue 1, 1-10

Abstract: Abstract The mechanical wiring between cells and their surroundings is fundamental to the regulation of complex biological processes during tissue development, repair or pathology. Traction force microscopy (TFM) enables determination of the actuating forces. Despite progress, important limitations with intrusion effects in low resolution 2D pillar-based methods or disruptive intermediate steps of cell removal and substrate relaxation in high-resolution continuum TFM methods need to be overcome. Here we introduce a novel method allowing a one-shot (live) acquisition of continuous in- and out-of-plane traction fields with high sensitivity. The method is based on electrohydrodynamic nanodrip-printing of quantum dots into confocal monocrystalline arrays, rendering individually identifiable point light sources on compliant substrates. We demonstrate the undisrupted reference-free acquisition and quantification of high-resolution continuous force fields, and the simultaneous capability of this method to correlatively overlap traction forces with spatial localization of proteins revealed using immunofluorescence methods.

Date: 2016
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Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms12814

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DOI: 10.1038/ncomms12814

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