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Cited by 479

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Quantifying cell-generated mechanical forces within living embryonic tissues

Open access
Campàs, Otger, Mammoto, Tadanori, Hasso, Sean, Sperling, Ralph A, O'Connell, Daniel, Bischof, Ashley G, Maas, Richard, Weitz, David A, Mahadevan, L, Ingber, Donald E·2014·Nature Methods

Abstract

Cell-generated mechanical forces play a critical role during tissue morphogenesis and organ formation in the embryo. Little is known about how these forces shape embryonic organs, mainly because it has not been possible to measure cellular forces within developing three-dimensional (3D) tissues in vivo. We present a method to quantify cell-generated mechanical stresses exerted locally within living embryonic tissues, using fluorescent, cell-sized oil microdroplets with defined mechanical properties and coated with adhesion receptor ligands. After a droplet is introduced between cells in a tissue, local stresses are determined from droplet shape deformations, measured using fluorescence microscopy and computerized image analysis. Using this method, we quantified the anisotropic stresses generated by mammary epithelial cells cultured within 3D aggregates, and we confirmed that these stresses (3.4 nN μm−2) are dependent on myosin II activity and are more than twofold larger than stresses generated by cells of embryonic tooth mesenchyme, either within cultured aggregates or in developing whole mouse mandibles.

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Crossref · 10.1038/nmeth.2761

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Metadata

Authors
Campàs, O., Mammoto, T., Hasso, S., Sperling, R. A., O'Connell, D., Bischof, A. G., Maas, R., Weitz, D. A., Mahadevan, L., & Ingber, D. E.
Venue
Nature Methods
Published
2013-12-08
Volume
11
Issue
2
Pages
183-189
ISSN
  • 1548-7091 (ISSN-L)
  • 1548-7105
OpenAlex
W2097679878
Cited by
479
References
1
FWCI
15.11
Type
journal article
Language
en
Open access
green

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