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Traction Microscopy Integrated with Microfluidics for Chemotactic Collective Migration

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Published on: October 13, 2019

Modeling tensional homeostasis in multicellular clusters.

Sze Nok Tam¹, Michael L Smith¹, Dimitrije Stamenović^1,2

¹Department of Biomedical Engineering, Boston University, Boston, MA 02215, USA.

International Journal for Numerical Methods in Biomedical Engineering

|May 11, 2016

Summary

This summary is machine-generated.

Multicellular clusters, not isolated cells, maintain mechanical stress balance (tensional homeostasis). Cluster size, cell-cell connections, and force distribution are key factors, showing homeostasis is a multicellular phenomenon.

Keywords:

cell-cell coupling cellular clusters mathematical modeling mechanical stress tensional homeostasis traction forces

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Area of Science:

Cellular mechanics
Biophysics
Mathematical modeling

Background:

Tensional homeostasis is crucial for tissue function and preventing diseases like cancer.
Previous studies indicated isolated cells cannot maintain this balance, unlike multicellular clusters.

Purpose of the Study:

To develop mathematical models explaining experimental findings on tensional homeostasis in cell clusters.
To identify factors influencing tensional homeostasis in multicellular systems.

Main Methods:

Modeled multicellular clusters as 1D arrays of elastic blocks.
Used Monte Carlo simulations to generate cell-substrate traction forces.
Calculated stress fields by solving equilibrium equations.

Main Results:

Simulations showed stress fluctuations decrease with increasing cluster size, approaching homeostasis.
Model results align with experimental observations.
Identified cluster size, traction force distribution, and cell-cell mechanical coupling as key determinants.

Conclusions:

Tensional homeostasis is fundamentally a multicellular process.
Mathematical models provide insight into the biophysical mechanisms of cellular stress regulation.