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Application of next generation sequencing in dual HIV infection studies

病毒学 生物 人类免疫缺陷病毒(HIV) 人口 DNA测序 遗传学 基因 医学 环境卫生
作者
Ilya Lapovok,Pavel Baryshev,Д. В. Салеева,Alina Kirichenko,Anastasia Murzakova,Dmitry Kireev
出处
期刊:Journal of Microbiology, Epidemiology and Immunobiology [Central Research Institute for Epidemiology]
卷期号:98 (6): 627-638 被引量:1
标识
DOI:10.36233/0372-9311-153
摘要

Introduction. The aim of the study was to use comparative analysis for assessing efficiency of detection and confirmation of dual HIV infection, using conventional population sequencing (PS) and next generation sequencing (NGS) for an HIV-1 pol gene fragment, which encompasses protease and partially reverse transcriptase (positions 2253–3368).Materials and methods. The study was performed on intersubtype dual HIV infection model samples containing viruses of HIV-1 subtype B, sub-subtype A6 and recombinant form CRF63_02A1. Viruses were mixed pairwise in proportions from 10 to 90% to obtain 3 groups of model samples: CRF63vsB, CRF63vsA6, and A6vsB. The nucleotide sequences obtained by using PS and NGS technologies having 5, 10, 15, and 20% sensitivity thresholds for minor virus variants (NGS5–NGS20, respectively) were used to estimate the number of degenerate nucleotides or the degenerate base (DB) count and the number of synonymous mutations (SM) or the SM count. The fragment of the studied region (positions 2725–2981) was used for the analysis of operational taxonomic units.Results. The application of NGS5 proved highly efficient for detection of dual HIV infection in the model samples. The statistically significant (p 0.01) increase in DB and SM counts was demonstrated by NGS5 compared to PS. As a result, NGS5 helped detect dual HIV infection in 25 out of 27 model samples, while with PS it was detected only in 15 samples. The analysis of operational taxonomic units confirmed dual HIV infection in all the groups of model samples.Discussion. The efficiency of detection and confirmation of dual HIV infection depends both on the content of each virus in the sample and on genetic characteristics of these viruses. Conclusion. Using NGS genetic testing in routine practice will be instrumental for efficient identification of genetic characteristics of infectious agents and for thorough analysis of the epidemiological situation.

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