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Bridging the gap between single cell migration and collective dynamics

Florian Thueroff, View ORCID ProfileAndriy Goychuk, Matthias Reiter, View ORCID ProfileErwin Frey
doi: https://doi.org/10.1101/548677
Florian Thueroff
Arnold Sommerfeld Center for Theoretical Physics (ASC), Ludwig-Maximilians-Universitaet Muenchen
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Andriy Goychuk
Arnold Sommerfeld Center for Theoretical Physics (ASC), Ludwig-Maximilians-Universitaet Muenchen
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  • For correspondence: andriy.goychuk@physik.lmu.de
Matthias Reiter
Arnold Sommerfeld Center for Theoretical Physics (ASC), Ludwig-Maximilians-Universitaet Muenchen
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Erwin Frey
Arnold Sommerfeld Center for Theoretical Physics (ASC), Ludwig-Maximilians-Universitaet Muenchen
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  • ORCID record for Erwin Frey
  • For correspondence: frey@lmu.de
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Abstract

Huge amounts of experimental data relating to the emergence of collective cell migration as one proceeds from the behavioral dynamics of small cohorts of cells to the coordinated migratory response of cells in extended tissues are now available. Integrating these findings into a mechanistic picture of cell migration which is applicable across such a broad range of system sizes constitutes a crucial step towards a better understanding of the basic factors that determine the emergence of collective cell motion. Here we propose a cellular-automaton-based modeling framework, which focuses on the integration of high-level cell functions and their concerted effect on cellular migration patterns. In particular, we adopt a top-down approach to incorporate a coarse-grained description of cell polarity and its response to mechanical cues, and address the impact of cell adhesion on collective migration in cell groups. We demonstrate that the model faithfully reproduces typical cell shapes and movements down to the level of single cells, and yet is computationally efficient enough to allow for the simulation of (currently) up to O(104) cells. To develop a mechanistic picture that illuminates the relationship between cell functions and collective migration, we present a detailed study of small groups of cells in confined circular geometries, and discuss the emerging patterns of collective motion in terms of specific cellular properties. Finally, we apply our computational model at the level of extended tissues, and investigate stress and velocity distributions as well as front morphologies in expanding cellular sheets.

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Posted February 13, 2019.
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Bridging the gap between single cell migration and collective dynamics
Florian Thueroff, Andriy Goychuk, Matthias Reiter, Erwin Frey
bioRxiv 548677; doi: https://doi.org/10.1101/548677
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Bridging the gap between single cell migration and collective dynamics
Florian Thueroff, Andriy Goychuk, Matthias Reiter, Erwin Frey
bioRxiv 548677; doi: https://doi.org/10.1101/548677

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