Infection spreading in cell culture occurs due to virus replication in infected cells and its random motion in the extracellular space. Multiplicity of infection experiments in cell cultures are conventionally used for the characterization of viral infection by the number of viral plaques and the rate of their growth. We describe this process with a delay reaction-diffusion system of equations for the concentrations of uninfected cells, infected cells, virus, and interferon. Time delay corresponds to the duration of viral replication inside infected cells. We show that infection propagates in cell culture as a reaction-diffusion wave, we determine the wave speed and prove its existence. Next, we carry out numerical simulations and identify three stages of infection progression: infection decay during time delay due to virus replication, explosive growth of viral load when infected cells begin to reproduce it, and finally, wave-like infection progression in cell culture characterized by a constant or slowly growing total viral load. The modelling results are in agreement with the experimental data for the coronavirus infection in a culture of epithelial cells and for some other experiments. The presence of interferon produced by infected cells decreases the viral load but does not change the speed of infection progression in cell culture. In the 2D modelling, the total viral load grows faster than in the 1D case due to the increase of plaque perimeter.
Keywords: Viral infection, cell culture, reaction-diffusion equations, time delay
@article{M2AN_2022__56_3_791_0,
author = {Ait Mahiout, Latifa and Bessonov, Nikolai and Kazmierczak, Bogdan and Sadaka, Georges and Volpert, Vitaly},
title = {Infection spreading in cell culture as a reaction-diffusion wave},
journal = {ESAIM: Mathematical Modelling and Numerical Analysis },
pages = {791--814},
year = {2022},
publisher = {EDP-Sciences},
volume = {56},
number = {3},
doi = {10.1051/m2an/2022019},
mrnumber = {4411480},
zbl = {1492.35373},
language = {en},
url = {https://www.numdam.org/articles/10.1051/m2an/2022019/}
}
TY - JOUR AU - Ait Mahiout, Latifa AU - Bessonov, Nikolai AU - Kazmierczak, Bogdan AU - Sadaka, Georges AU - Volpert, Vitaly TI - Infection spreading in cell culture as a reaction-diffusion wave JO - ESAIM: Mathematical Modelling and Numerical Analysis PY - 2022 SP - 791 EP - 814 VL - 56 IS - 3 PB - EDP-Sciences UR - https://www.numdam.org/articles/10.1051/m2an/2022019/ DO - 10.1051/m2an/2022019 LA - en ID - M2AN_2022__56_3_791_0 ER -
%0 Journal Article %A Ait Mahiout, Latifa %A Bessonov, Nikolai %A Kazmierczak, Bogdan %A Sadaka, Georges %A Volpert, Vitaly %T Infection spreading in cell culture as a reaction-diffusion wave %J ESAIM: Mathematical Modelling and Numerical Analysis %D 2022 %P 791-814 %V 56 %N 3 %I EDP-Sciences %U https://www.numdam.org/articles/10.1051/m2an/2022019/ %R 10.1051/m2an/2022019 %G en %F M2AN_2022__56_3_791_0
Ait Mahiout, Latifa; Bessonov, Nikolai; Kazmierczak, Bogdan; Sadaka, Georges; Volpert, Vitaly. Infection spreading in cell culture as a reaction-diffusion wave. ESAIM: Mathematical Modelling and Numerical Analysis , Tome 56 (2022) no. 3, pp. 791-814. doi: 10.1051/m2an/2022019
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