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Cell-centered truss model for the analysis of cell rheology and remodelling
Muñoz Romero, José; Asadipour, Nina; Albo, Santiago
Universitat Politècnica de Catalunya. Departament de Matemàtica Aplicada III; Universitat Politècnica de Catalunya. LACÀN - Centre Específic de Recerca de Mètodes Numèrics en Ciències Aplicades i Enginyeria
Soft active tissues exhibit softening, hardening, and reversible fluidisation [14]. The result of these non-linear behaviour is due to multiple processes taking part at di erent scales: active protein motors that actuate at the polymeric structure of the cell, (de)polymerisation and remodelling of the cytoskeleton, and cell-cell connectivity changes that take place at the tissue level. We here present a cell-centred model that takes into account the underlying active process at the cytoskeleton level, and allows for active and passive cell-cell reorganisation and intercalation [11]. Cell-cell interactions are modelled through specific non-linear elastic laws, and coupled active deformations [12]. Cell-connectivity and cell boundaries are respectively determined with Delaunay and Voronoi diagrams of the cell-centres. The model is compared against different experimental measures of apparent cell viscoelasticity. Passive cell reorganistation and the active cell shape changes that take during embryogenesis will be also compared against continuous models.
Àrees temàtiques de la UPC::Enginyeria dels materials::Materials plàstics i polímers
Soft tissues
active deformations
Attribution-NonCommercial-NoDerivs 3.0 Spain

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