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Phys Rev Lett. 2011 Oct 28;107(18):188102. Epub 2011 Oct 24.

Stress clamp experiments on multicellular tumor spheroids.

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UMR 168, Institut Curie, Centre de Recherche, 26 rue d'Ulm 75005 Paris, France.


The precise role of the microenvironment on tumor growth is poorly understood. Whereas the tumor is in constant competition with the surrounding tissue, little is known about the mechanics of this interaction. Using a novel experimental procedure, we study quantitatively the effect of an applied mechanical stress on the long-term growth of a spheroid cell aggregate. We observe that a stress of 10 kPa is sufficient to drastically reduce growth by inhibition of cell proliferation mainly in the core of the spheroid. We compare the results to a simple numerical model developed to describe the role of mechanics in cancer progression.

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