Mechano-biological model of glioblastoma cells in response to osmotic stress

Giulia Pozzi; Stefano Marchesi; Giorgio Scita; Davide Ambrosi; Pasquale Ciarletta; Giulia Pozzi; Stefano Marchesi; Giorgio Scita; Davide Ambrosi; Pasquale Ciarletta

doi:10.3934/mbe.2019139

Mathematical Biosciences and Engineering

2019, Volume 16, Issue 4: 2795-2810. doi: 10.3934/mbe.2019139

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Mechano-biological model of glioblastoma cells in response to osmotic stress

1.
MOX Laboratory, Department of Mathematics, Politecnico di Milano, Italy
2.
IFOM, the FIRC Institute of Molecular Oncology, Via Adamello 16, 20139 Milan, Italy
3.
Department of Oncology and Hemato-Oncology, University of Milan, Milan, Italy
4.
DISMA, Dipartimento di Scienze Matematiche ”G.L. Lagrange”, Politecnico di Torino, Italy

Received: 29 December 2018 Accepted: 05 March 2019 Published: 01 April 2019

This work investigates the mechano-biological features of cells cultured in monolayers in response to different osmotic conditions. In-vitro experiments have been performed to quantify the long-term effects of prolonged osmotic stresses on the morphology and proliferation capacity of glioblastoma cells. The experimental results highlight that both hypotonic and hypertonic conditions affect the proliferative rate of glioblastoma cells on different cell cycle phases. Moreover, glioblastoma cells in hypertonic conditions display a flattened and elongated shape. The latter effect is explained using a nonlinear elastic model for the single cell. Due to a crossover between the free energy contributions related to the cytosol and the cytoskeletal fibers, a critical osmotic stress determines a morphological transition from a uniformly compressed to an elongated shape.
- mechano-biology,
- cancer model,
- biomathematics,
- glioblastoma,
- osmotic stress
Citation: Giulia Pozzi, Stefano Marchesi, Giorgio Scita, Davide Ambrosi, Pasquale Ciarletta. Mechano-biological model of glioblastoma cells in response to osmotic stress[J]. Mathematical Biosciences and Engineering, 2019, 16(4): 2795-2810. doi: 10.3934/mbe.2019139

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Abstract

This work investigates the mechano-biological features of cells cultured in monolayers in response to different osmotic conditions. In-vitro experiments have been performed to quantify the long-term effects of prolonged osmotic stresses on the morphology and proliferation capacity of glioblastoma cells. The experimental results highlight that both hypotonic and hypertonic conditions affect the proliferative rate of glioblastoma cells on different cell cycle phases. Moreover, glioblastoma cells in hypertonic conditions display a flattened and elongated shape. The latter effect is explained using a nonlinear elastic model for the single cell. Due to a crossover between the free energy contributions related to the cytosol and the cytoskeletal fibers, a critical osmotic stress determines a morphological transition from a uniformly compressed to an elongated shape.

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