A Stochastic Cellular Automata Model for Avascular Tumor Growth with Surveillance of an Immune Response Against the Tumorous Cells : on a Cubic Lattice

Authors

  • Saowaros Srisuk Department of Mathematics, Faculty of Science, Burapha University, Chonburi, Thailand.
  • Ankana Boondirek Department of Mathematics, Faculty of Science, Burapha University, Chonburi, Thailand.

Abstract

A kinetic model for avascular tumor growth is presented.  The model includes an immune surveillance mechanism that recognizes the cancerous cell and makes the cell susceptible to certain binding reactions. The particular binding interactions of interest are those that lead to the formation of tumor-immune complexes consisting of the cancerous cells and cytotoxic agents (effectors) such as cells or biochemical which can cause the apoptosis of the cancerous cells.  The model allows for the possibility of the cancerous cells escaping the immune activity after the binding reactions have occurred, or dying but not undergoing apoptosis when the immune agents are ineffectual. A stochastic cellular automata model on a three-dimensional cubic lattice is used to implement the kinetic model.  The simulation results, such as the growth curves are explained at a kinetic microscopic scale. The sensitivity analysis of the effects on parameters from the morphologies of simulated tumors by measuring the spatial distribution of proliferating cells will be presented.  The model shows that an increase in the dormancy rate leads to an increase in the density of the proliferating cells in the outermost region.  Keywords :  stochastic model, in silico model of tumor growth, model on a cubic lattice,                    tumor growth with immune response

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Published

2020-01-28