2012
DOI: 10.1128/jvi.06627-11
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Analysis of Hepatitis C Virus Intrahost Diversity across the Coding Region by Ultradeep Pyrosequencing

Abstract: e Hepatitis C virus (HCV) is the leading cause of liver disease worldwide. In this study, we analyzed four treatment-naïve patients infected with subtype 1a and performed Roche/454 pyrosequencing across the coding region. We report the presence of low-level drug resistance mutations that would most likely have been missed using conventional sequencing methods. The approach described here is broadly applicable to studies of viral diversity and could help to improve the efficacy of direct-acting antiviral agents… Show more

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Cited by 45 publications
(39 citation statements)
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“…Intrahost genetic variability was low and consisted of 35 to 99 single nucleotide polymorphisms (SNPs) across the GHV open reading frame (ORF). This amount of variability is higher than that for dengue virus but considerably lower than that for HCV (55,56). The majority of polymorphisms detected were present at frequencies below 10%, indicating that many of these SNPs may be selectively neutral.…”
Section: Resultsmentioning
confidence: 79%
“…Intrahost genetic variability was low and consisted of 35 to 99 single nucleotide polymorphisms (SNPs) across the GHV open reading frame (ORF). This amount of variability is higher than that for dengue virus but considerably lower than that for HCV (55,56). The majority of polymorphisms detected were present at frequencies below 10%, indicating that many of these SNPs may be selectively neutral.…”
Section: Resultsmentioning
confidence: 79%
“…Recently, ultradeep sequencing has been used as a sensitive technique for characterizing resistance variants (20,21,22,23). In the present study, ultradeep sequencing was performed using sera from 8 Japanese chronic hepatitis C patients who participated in a clinical phase 2a trial using DCV, PEG-IFN alpha-2b (Pegintron; Schering-Plough, Kenilworth, NJ), and RBV to analyze the association between preexisting DCV-resistant variants and clinical antiviral responses.…”
mentioning
confidence: 99%
“…Muitas RTs retrovirais produzem cDNA a partir de praticamente qualquer RNA se provida de iniciador e dNTP em um tampão adequado; mas não há tal atividade com as proteínas P hepadnavirais, mesmo depois que se tornaram acessíveis em quantidades maiores por expressão recombinante (26). A razão por trás é a dependência estrita da atividade da proteína P de chaperonas celulares (proteínas de choque térmico, Hsp).…”
Section: Dna Polimeraseunclassified