The Demise of Migrating Brain Tumor Cells Now Shown In A Model
Development of a theoretical model to simulate the evolution of highly proliferating brain tumor core cells subjected to treatment by alternating radio frequency electric field was made by an Israeli physicist.
The research which about to be published in EPJ E is by Alexander Iomin from the Israel Institute of Technology Technion in Haifa. The author examines the possibility of enhancing the level of treatment by targeting the outer area of the tumour in another model.
Iomin introduced a theoretical evaluation of the effect of a standard treatment known as tumour-treating-field (TTF) on the speed of development of a type of brain tumor called glioma. To do so, he adapted a well-established model -- the so-called fractal comb model, which looks like the regularly spaced teeth of a comb -- based on a mathematical approach called fractional calculus. This model is based on the hypothesis that TTF treatment had limited efficiency in the outer region and would only be effective on the inner part of the tumour, which is characterised by a higher proliferation rate of cancer cells.
By contrast, the peripheral part of the tumor is characterised by high migration and low proliferation rates of cancer cells. In his second model, the author considered glioma cancer as a composite of cancer cells and normal tissue cells. Each cell type exhibits a distinctive polarisation by an electric field, following a pattern similar to fractal geometry. He established a model reflecting the difference between the two types of cells and applied fractal calculus to their geometry. Iomin suggested that because of the fractal nature of cancer cells the TTF treatment might be enhanced at certain frequencies. As a result, the cancer cells' plasma membrane permeability would irreversibly increase, which could lead to their demise. This approach may constitute an effective non-invasive method for treating brain cancer.
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