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Identification of two novel HIV-1 unique recombinant forms (CRF01_AE/CRF07_BC) and genomic characterization in Tongzhou district of Beijing, China

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机构: [1]Tongzhou District Center for Disease Control and Prevention, Beijing, China [2]State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Academy of Military MedicalSciences, Beijing, China [3]School of Public Health, Gannan Medical University, Ganzhou, China [4]School of Public Health, North China University of Science and Technology, Tangshan, China [5]West China Hospital, State Key Laboratory of Biotherapy and Cancer Center, Sichuan University, Chengdu, China
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关键词: HIV-1 recombinant genetic diversity subtype phylogenetic analysis

摘要:
Continuous recombination and variation during replication could lead to rapid evolution and genetic diversity of HIV-1. Some studies had identified that it was easy to develop new recombinant strains of HIV-1 among the populations of men who have sex with men (MSM). Surveillance of genetic variants of HIV-1 in key populations was crucial for comprehending the development of regional HIV-1 epidemics. The finding was reported the identification of two new unique recombinant forms (URF 20110561 and 21110743) from individuals infected with HIV-1 in Tongzhou, Beijing in 2020-2022. Sequences of near full-length genome (NFLG) were amplified, then identification of amplification products used phylogenetic analyses. The result showed that CRF01_AE was the main backbone of 20110561 and 21110743. In the gag region of the virus, 20110561 was inserted two fragments from CRF07_BC, while in the pol and tat regions of the virus, 21110743 was inserted four fragments from CRF07_BC. The CRF01_AE parental origin in the genomes of the two URFs was derived from the CRF01_AE Cluster 4. In the phylogenetic tree, the CRF07_BC parental origin of 20110561 clustered with 07BC_N and the CRF07_BC parental origin of 21110743 clustered with 07BC_O. In summary, the prevalence of novel second-generation URFs of HIV-1 was monitored in Tongzhou, Beijing. The emergence of the novel CRF01_AE/CRF07_BC recombination demonstrated that there was a great significance of continuous monitoring of new URFs in MSM populations to prevent and control the spreading of new HIV-1 URFs.

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出版当年[2023]版:
大类 | 4 区 医学
小类 | 4 区 免疫学 4 区 传染病学 4 区 病毒学
最新[2023]版:
大类 | 4 区 医学
小类 | 4 区 免疫学 4 区 传染病学 4 区 病毒学
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第一作者机构: [1]Tongzhou District Center for Disease Control and Prevention, Beijing, China
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通讯机构: [1]Tongzhou District Center for Disease Control and Prevention, Beijing, China [2]State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Academy of Military MedicalSciences, Beijing, China [*1]Tongzhou District Center for Disease Control and PreventionBeijingChina [*2]State Key Laboratory of Pathogen and Biosecurity Beijing Institute of Microbiology and Epidemiology Academy of Military Medical Sciences Dongdajie 20 Fengtai District Beijing 100071 China
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