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- W2028488386 abstract "The continuous emergence of drug-resistant viruses is a major obstacle for the successful treatment of viral infections, thus representing a persistent spur to the search for new therapeutic strategies. Among them, multidrug treatments are currently at the forefront of pharmaceutical, clinical, and computational investigation. Still, there are many unknowns in the way that different drugs interact among themselves and with the pathogen that they aim to control. Inspired by experimental studies with picornavirus, here, we discuss the performance of sequential vs. combination therapies involving two dissimilar drugs: the mutagen ribavirin and an inhibitor of viral replication, guanidine. Because a systematic analysis of viral response to drug doses demands a precious amount of time and resources, we present and analyze an in silico model describing the dynamics of the viral population under the action of the two drugs. The model predicts the response of the viral population to any dose combination, the optimal therapy to be used in each case, and the way to minimize the probability of appearance of resistant mutants. In agreement with the theoretical predictions, in vitro experiments with foot-and-mouth disease virus confirm that the suitability of simultaneous or sequential administration depends on the drug doses. In addition, intrinsic replicative characteristics of the virus (e.g., replication through RNA only or a DNA intermediate) play a key role to determine the appropriateness of a sequential or combination therapy. Knowledge of several model parameters can be derived by means of few, simple experiments, such that the model and its predictions can be extended to other viral systems." @default.
- W2028488386 created "2016-06-24" @default.
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- W2028488386 date "2011-09-12" @default.
- W2028488386 modified "2023-10-16" @default.
- W2028488386 title "Tempo and mode of inhibitor–mutagen antiviral therapies: A multidisciplinary approach" @default.
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- W2028488386 doi "https://doi.org/10.1073/pnas.1110489108" @default.
- W2028488386 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/3179121" @default.
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