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26 papers · 1 filter
Homeostatic Fluctuations of a Tissue Surface
Thomas Risler, Aurélien Peilloux, Jacques Prost
We study the surface fluctuations of a tissue with a dynamics dictated by cell-rearrangement, cell-division, and cell-death processes. Surface fluctuations are calculated in the ho…
An interplay of migratory and division forces as a generic mechanism for stem cell patterns
Edouard Hannezo, Alice Coucke, Jean-François Joanny
In many adult tissues, stem cells and differentiated cells are not homogeneously distributed : stem cells are arranged in periodic "niches", and differentiated cells are constantly…
Persistence-driven durotaxis: Generic, directed motility in rigidity gradients
Elizaveta A. Novikova, Matthew Raab, Dennis E. Discher +1
Cells move differently on substrates with different elasticities. In particular, the persistence time of their motion is higher on stiffer substrates. We show that this behavior wi…
Nonequilibrium dissipation in living oocytes
Étienne Fodor, Wylie W. Ahmed, Maria Almonacid +6
Living organisms are inherently out-of-equilibrium systems. We employ new developments in stochastic energetics and rely on a minimal microscopic model to predict the amount of mec…
Active mechanics reveal molecular-scale force kinetics in living oocytes
Wylie W. Ahmed, Etienne Fodor, Maria Almonacid +6
Active diffusion of intracellular components is emerging as an important process in cell biology. This process is mediated by complex assemblies of molecular motors and cytoskeleta…
Tissue fusion over non-adhering surfaces
V. Nier, M. Deforet, G. Duclos +4
Tissue fusion eliminates physical voids in a tissue to form a continuous structure and is central to many processes in development and repair. Fusion events in vivo, particularly i…