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Multiparameters dependance of tissue shape maintenance in myoblasts multicellular aggregates: the role of intermediate filaments.

Nagle, I.; Delort, F.; Henon, S.; Wilhelm, C.; Batonnet-Pichon, S.; Reffay, M.

2021-12-19 biophysics
10.1101/2021.12.18.473332 bioRxiv
Show abstract

Liquid and elastic behavior of tissues drives their morphology and their response to the environment. They appear as the first insight on tissue mechanics. We explore the role of individual cell properties on spheroids of mouse muscle precursor cells by developing a fully automated surface tension and Youngs modulus measurement system. Flattening multicellular aggregates under magnetic constraint, we show that rigidity and surface tension act as highly sensitive macroscopic reporters closely related to microscopic local tension and effective adhesion. Shedding light on the major contributions of acto-myosin contractility, actin organization and intercellular adhesions, we reveal the role of desmin organization on the macroscopic mechanics of this tissue model.

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