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- W4295680181 abstract "The development of chemoresistance remains a significant cause of treatment failure in breast cancer. We posit that a mathematical understanding of chemoresistance could assist in developing successful treatment strategies. Towards that end, we have developed a model that describes the cytotoxic effects of the standard chemotherapeutic drug doxorubicin on the MCF-7 breast cancer cell line. We assume that treatment with doxorubicin induces a compartmentalization of the breast cancer cell population into surviving cells, which continue proliferating after treatment, and irreversibly damaged cells, which gradually transition from proliferating to treatment-induced death. The model is fit to experimental data including variations in drug concentration, inter-treatment interval, and number of doses. Our model recapitulates tumor cell dynamics in all these scenarios (as quantified by the concordance correlation coefficient, CCC > 0.95). In particular, superior tumor control is observed with higher doxorubicin concentrations, shorter inter-treatment intervals, and a higher number of doses (p < 0.05). Longer inter-treatment intervals require adapting the model parameterization after each doxorubicin dose, suggesting the promotion of chemoresistance. Additionally, we propose promising empirical formulas to describe the variation of model parameters as functions of doxorubicin concentration (CCC > 0.78). Thus, we conclude that our mathematical model could deepen our understanding of the cytotoxic effects of doxorubicin and could be used to explore practical drug regimens achieving optimal tumor control." @default.
- W4295680181 created "2022-09-14" @default.
- W4295680181 creator A5003456246 @default.
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- W4295680181 date "2022-09-12" @default.
- W4295680181 modified "2023-10-14" @default.
- W4295680181 title "Mathematical characterization of population dynamics in breast cancer cells treated with doxorubicin" @default.
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- W4295680181 doi "https://doi.org/10.3389/fmolb.2022.972146" @default.
- W4295680181 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/36172049" @default.
- W4295680181 hasPublicationYear "2022" @default.
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