An immune system-tumour interactions model with discrete time delay: Model analysis and validation

作者：Piotrowska Monika Joanna^*

来源：Communications in Nonlinear Science & Numerical Simulation, 2016, 34: 185-198.

DOI：10.1016/j.cnsns.2015.10.022

• Delay differential equations
• Stability analysis
• Hopf bifurcation
• Immune system-tumour interactions

In this article a generalised mathematical model describing the interactions between malignant tumour and immune system with discrete time delay incorporated into the system is considered. Time delay represents the time required to generate an immune response due to the immune system activation by cancer cells. The basic mathematical properties of the considered model, including the global existence, uniqueness, non-negativity of the solutions, the stability of steady sates and the possibility of the existence of the stability switches, are investigated when tune delay is treated as a bifurcation parameter. The model is validated with the sets of the experimental data and additional numerical simulations are performed to illustrate, extend, interpret and discuss the analytical results in the context of the tumour progression.

• 出版日期2016-5