New HIV type 1 CRF01_AE/B recombinants displaying unique distribution of breakpoints from incident infections among injecting drug users in Thailand.

New HIV type 1 CRF01_AE/B recombinants displaying unique distribution of breakpoints from incident infections among injecting drug users in Thailand.
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新的 HIV 1 型 CRF01_AE/B 重组体显示泰国注射吸毒者中事件感染断点的独特分布。

DOI:
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发表时间:
2003
影响因子:
1.5
通讯作者:
S. Subbarao
S. Subbarao
中科院分区:
医学4区
文献类型:
--
作者:
A. Ramos;L. Nguyen;D. Hu;S. Vanichseni;K. Choopanya;N. Young;J. Tappero;T. Mastro;T. Folks;S. Subbarao

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本研究的目的是在泰国曼谷对注射毒品使用者(IDUs)进行的前瞻性队列研究中,识别和描述偶发感染中重组人类免疫缺陷病毒1型(HIV-1)基因组。通过蛋白酶和env(C2-V4)基因区域的横断面比较系统发育分析,在111名注射吸毒者中有4名(3.5%)的HIV-1序列中观察到亚型不一致。四种毒株的近全长HIV-1基因组序列显示,在所有四种毒株中,gp 120序列与CRF01_AE原型聚簇,而其余基因组显示出不同的镶嵌模式,在HIV-1 CRF01_AE和亚型B样区域之间存在多个断点。四个HIV-1重组株中的两个显示出几乎相同的嵌合结构,这表明可能出现和传播一种潜在的新的HIV-1循环重组形式。通过长期随访进一步表征这些和其他重组基因组对于理解病毒多样性的产生和逃避宿主免疫应答将是重要的。这些信息对疫苗的开发尤其重要。
The goals of this study were to identify and characterize recombinant human immunodeficiency virus type 1 (HIV-1) genomes among incident infections in a prospective cohort study of injecting drug users (IDUs) in Bangkok, Thailand. Through cross-sectional, comparative phylogenetic analysis of the protease and env (C2-V4) gene regions, subtype discordance was observed in HIV-1 sequences from 4 of 111 IDUs (3.5%). Near-full-length HIV-1 genome sequences of the four strains revealed that in all four, the gp120 sequences clustered with a CRF01_AE prototype, while the remainder of the genomes displayed distinct mosaic patterns, with multiple breakpoints between HIV-1 CRF01_AE and subtype B-like regions. Two of the four HIV-1 recombinant strains displayed a nearly identical mosaic structure, suggesting the possible emergence and spread of a potentially new circulating recombinant form of HIV-1. Further characterization of these and other recombinant genomes through long-term follow-up will be important in understanding the generation of viral diversity and escape from the hosts immune responses. This information will be especially important for vaccine development.
DOI: 10.1073/pnas.87.4.1556
发表时间: 1990-02-01
影响因子: 11.1
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影响因子: 1.5
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