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A cellular automata model for avascular solid tumor growth under the effect of therapy

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  • Reis, E.A.
  • Santos, L.B.L.
  • Pinho, S.T.R.

Abstract

Tumor growth has long been a target of investigation within the context of mathematical and computer modeling. The objective of this study is to propose and analyze a two-dimensional stochastic cellular automata model to describe avascular solid tumor growth, taking into account both the competition between cancer cells and normal cells for nutrients and/or space and a time-dependent proliferation of cancer cells. Gompertzian growth, characteristic of some tumors, is described and some of the features of the time-spatial pattern of solid tumors, such as compact morphology with irregular borders, are captured. The parameter space is studied in order to analyze the occurrence of necrosis and the response to therapy. Our findings suggest that transitions exist between necrotic and non-necrotic phases (no-therapy cases), and between the states of cure and non-cure (therapy cases). To analyze cure, the control and order parameters are, respectively, the highest probability of cancer cell proliferation and the probability of the therapeutic effect on cancer cells. With respect to patterns, it is possible to observe the inner necrotic core and the effect of the therapy destroying the tumor from its outer borders inwards.

Suggested Citation

  • Reis, E.A. & Santos, L.B.L. & Pinho, S.T.R., 2009. "A cellular automata model for avascular solid tumor growth under the effect of therapy," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 388(7), pages 1303-1314.
    • Handle: RePEc:eee:phsmap:v:388:y:2009:i:7:p:1303-1314
    DOI: 10.1016/j.physa.2008.11.038
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    Cited by:

    1. Guiraldello, Rafael T. & Martins, Marcelo L. & Mancera, Paulo F.A., 2016. "Evaluating the efficacies of Maximum Tolerated Dose and metronomic chemotherapies: A mathematical approach," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 456(C), pages 145-156.
    2. Miranda, Luiza M.S. & Souza, Andre M.C., 2023. "Fractality in tumor growth at the avascular stage from a generalization of the logistic-Gompertz dynamics," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 618(C).

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