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• W2129736881 endingPage "e1004064" @default.
• W2129736881 startingPage "e1004064" @default.
• W2129736881 abstract "Widely used chemical genetic screens have greatly facilitated the identification of many antiviral agents. However, the regions of interaction and inhibitory mechanisms of many therapeutic candidates have yet to be elucidated. Previous chemical screens identified Daclatasvir (BMS-790052) as a potent nonstructural protein 5A (NS5A) inhibitor for Hepatitis C virus (HCV) infection with an unclear inhibitory mechanism. Here we have developed a quantitative high-resolution genetic (qHRG) approach to systematically map the drug-protein interactions between Daclatasvir and NS5A and profile genetic barriers to Daclatasvir resistance. We implemented saturation mutagenesis in combination with next-generation sequencing technology to systematically quantify the effect of every possible amino acid substitution in the drug-targeted region (domain IA of NS5A) on replication fitness and sensitivity to Daclatasvir. This enabled determination of the residues governing drug-protein interactions. The relative fitness and drug sensitivity profiles also provide a comprehensive reference of the genetic barriers for all possible single amino acid changes during viral evolution, which we utilized to predict clinical outcomes using mathematical models. We envision that this high-resolution profiling methodology will be useful for next-generation drug development to select drugs with higher fitness costs to resistance, and also for informing the rational use of drugs based on viral variant spectra from patients." @default.
• W2129736881 created "2016-06-24" @default.
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• W2129736881 date "2014-04-10" @default.
• W2129736881 modified "2023-10-14" @default.
• W2129736881 title "A Quantitative High-Resolution Genetic Profile Rapidly Identifies Sequence Determinants of Hepatitis C Viral Fitness and Drug Sensitivity" @default.
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• W2129736881 doi "https://doi.org/10.1371/journal.ppat.1004064" @default.
• W2129736881 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/3983061" @default.
• W2129736881 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/24722365" @default.
• W2129736881 hasPublicationYear "2014" @default.
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