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• W2149178369 endingPage "e1000883" @default.
• W2149178369 startingPage "e1000883" @default.
• W2149178369 abstract "Gene therapy is an emerging alternative to conventional anti-HIV-1 drugs, and can potentially control the virus while alleviating major limitations of current approaches. Yet, HIV-1's ability to rapidly acquire mutations and escape therapy presents a critical challenge to any novel treatment paradigm. Viral escape is thus a key consideration in the design of any gene-based technique. We develop a computational model of HIV's evolutionary dynamics in vivo in the presence of a genetic therapy to explore the impact of therapy parameters and strategies on the development of resistance. Our model is generic and captures the properties of a broad class of gene-based agents that inhibit early stages of the viral life cycle. We highlight the differences in viral resistance dynamics between gene and standard antiretroviral therapies, and identify key factors that impact long-term viral suppression. In particular, we underscore the importance of mutationally-induced viral fitness losses in cells that are not genetically modified, as these can severely constrain the replication of resistant virus. We also propose and investigate a novel treatment strategy that leverages upon gene therapy's unique capacity to deliver different genes to distinct cell populations, and we find that such a strategy can dramatically improve efficacy when used judiciously within a certain parametric regime. Finally, we revisit a previously-suggested idea of improving clinical outcomes by boosting the proliferation of the genetically-modified cells, but we find that such an approach has mixed effects on resistance dynamics. Our results provide insights into the short- and long-term effects of gene therapy and the role of its key properties in the evolution of resistance, which can serve as guidelines for the choice and optimization of effective therapeutic agents." @default.
• W2149178369 created "2016-06-24" @default.
• W2149178369 creator A5002852323 @default.
• W2149178369 creator A5013729741 @default.
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• W2149178369 creator A5066623854 @default.
• W2149178369 date "2010-08-12" @default.
• W2149178369 modified "2023-09-30" @default.
• W2149178369 title "Computational Models of HIV-1 Resistance to Gene Therapy Elucidate Therapy Design Principles" @default.
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• W2149178369 doi "https://doi.org/10.1371/journal.pcbi.1000883" @default.
• W2149178369 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/2920833" @default.

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