Re-polarisation of macrophages within collective tumour cell migration: a multiscale moving boundary approach

Szabolcs Suveges, Raluca Eftimie, Dumitru Trucu (Lead / Corresponding author)

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Abstract

Cancer invasion of the surrounding tissue is a multiscale process of collective cell movement that involves not only tumour cells but also other immune cells in the environment, such as the tumour-associated macrophages (TAMs). The heterogeneity of these immune cells, with the two extremes being the pro-inflammatory and anti-tumour M1 cells, and the anti-inflammatory and pro-tumour M2 cells, has a significant impact on cancer invasion as these cells interact in different ways with the tumour cells and with the ExtraCellular Matrix (ECM). Experimental studies have shown that cancer cells co-migrate with TAMs, but the impact of these different TAM sub-populations (which can change their phenotype and re-polarise depending on the microenvironment) on this co-migration is not fully understood. In this study, we extend a previous multi-scale moving boundary mathematical model, by introducing the M1-like macrophages alongside with their exerted multi-scale effects on the tumour invasion process. With the help of this model we investigate numerically the impact of re-polarising the M2 TAMs into the anti-tumoral M1 phenotype and how such a strategy affects the overall tumour progression. In particular, we investigate numerically whether the M2→M1 re-polarisation could depend on time and/or space, and what would be the macroscopic effects of this spatial- and temporal-dependent re-polarisation on tumour invasion.

Original languageEnglish
Article number799650
Number of pages27
JournalFrontiers in Applied Mathematics and Statistics
Volume7
DOIs
Publication statusPublished - 1 Feb 2022

Keywords

  • Collective Cancer Cell Movement
  • cancer invasion
  • Macrophages
  • Macrophage re-polarisation
  • Multi-scale modelling
  • Cell adhesions
  • WENO schemes
  • Convolution
  • macrophages
  • collective cancer cell movement
  • macrophage re-polarisation
  • convolution
  • cell adhesions
  • multi-scale modelling

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