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  • Title: Application of next-generation sequencing to detect acyclovir-resistant herpes simplex virus type 1 variants at low frequency in thymidine kinase gene of the isolates recovered from patients with hematopoietic stem cell transplantation.
    Author: Fujii H, Kakiuchi S, Tsuji M, Nishimura H, Yoshikawa T, Yamada S, Omura N, Inagaki T, Shibamura M, Harada S, Taniguchi S, Saijo M.
    Journal: J Virol Methods; 2018 Jan; 251():123-128. PubMed ID: 29074089.
    Abstract:
    Ion Torrent next-generation sequencing (NGS) technology was applied to study the mode of emergence of acyclovir (ACV)-resistant (ACVr) herpes simplex virus type 1 (HSV-1) in patients with hematopoietic stem cell transplantation (HSCT) by quantitatively detecting mutations in the viral thymidine kinase (vTK) gene in the HSV-1 isolates recovered from HSCT patients. All of the mutations detected with the Sanger sequencing method in the vTK genes of HSV-1 isolates were also detected with the NGS assay. Furthermore, different mutations, which conferred ACV resistance and were not detected with the Sanger sequencing method, were also detected in a quantitative manner by using the NGS assay. The approach described here is applicable to studying the emergence process of vTK gene mutation-associated ACVr HSV-1 more in detail than the Sanger method. The NGS assay makes it possible to make a diagnosis of vTK gene mutation-associated ACVr HSV-1 infections at the early stage, which the ratio of ACVr HSV-1 is much lower than that of ACV-sensitive (ACVs) HSV-1.
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