Energy barriers and cell migration in densely packed tissues

Bi, Dapeng Y Lopez, Jorge Y Schwarz, Jennifer Y Manning, Lisa (2014) Energy barriers and cell migration in densely packed tissues. Soft Matter. pp. 1885-1890. ISSN 1744-6848

Text 2014 Energy Barriers Cell Migration.pdf Download (335kB)

Resumen

Recent observations demonstrate that confluent tissues exhibit features of glassy dynamics, such as caging behavior and dynamical heterogeneities, although it has remained unclear how single-cell properties control this behavior. Here we develop numerical and theoretical models to calculate energy barriers to cell rearrangements, which help govern cell migration in cell monolayers. In contrast to work on sheared foams, we find that energy barrier heights are exponentially distributed and depend systematically on the cell's number of neighbors. Based on these results, we predict glassy two time correlation functions for cell motion, with a timescale that increases rapidly as cell activity decreases. These correlation functions are used to construct simple random walks that reproduce the caging behavior observed for cell trajectories in experiments. This work provides a theoretical framework for predicting collective motion of cells in wound-healing, embryogenesis and cancer tumorogenesis.

Tipo de Elemento:	Artículo
Asunto:	Q Ciencias > QC Physics
Division:	Facultad de Ciencias Exactas y Naturales > Programa de Física > Productividad
Depósito de Usuario:	PhD Jorge Hernán López Melo
Fecha Deposito:	30 Aug 2023 16:20
Ultima Modificación:	30 Aug 2023 16:20
URI:	http://sired.udenar.edu.co/id/eprint/8286

Ver Elemento