Multiple CRF01_AE/CRF07_BC Recombinants Enhanced the HIV-1 Epidemic Complexity Among MSM in Shenyang City, Northeast China.

Multiple CRF01_AE/CRF07_BC Recombinants Enhanced the HIV-1 Epidemic Complexity Among MSM in Shenyang City, Northeast China.
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多个CRF01_AE/CRF07_BC重组体增强了中国东北沉阳市MSM中HIV-1流行的复杂性

DOI:
10.3389/fmicb.2022.855049
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发表时间:
2022
影响因子:
5.2
通讯作者:
Han, Xiaoxu
Han, Xiaoxu
中科院分区:
生物学2区
文献类型:
--
作者:
He, Shan;Song, Wei;Guo, Gang;Li, Qiang;An, Minghui;Zhao, Bin;Gao, Yang;Tian, Wen;Wang, Lin;Shang, Hong;Han, Xiaoxu

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独特的重组形式(URF)的传播使HIV-1的分子流行变得复杂。这种不断增加的遗传多样性对预防监测、诊断和疫苗设计都有影响。在这项研究中,我们对2016年至2020年中国东北沈阳市135例新诊断的HIV-1感染者的HIV-1 URF进行了表征,并通过系统发育和重组方法分析了它们的进化关系。在135个URF中,我们发现CRF01_AE/CRF07_BC重组体最常见(81.5%,110/135),其次是CRF01_AE/B(11.9%,16/135),B/C(3.7%,5/135)和其他(3.0%,4/135)。94.8%(128/135)的URF患者通过同性性接触感染。在110个URFs_0107中,有60个(54.5%)形成了11个亚簇(分支支持值= 1),并共享一致的重组结构。四个亚群在不同的高风险人群中造成了小规模的传播。尽管URFs_0107的重组结构是多种多样的,但重组体的热点集中在位置2,508和2,627之间(相对于HXB 2位置)。URFs_0107的CRF07_BC和CRF 01 AE片段主要来源于MSM人群。总之,本研究结果揭示了URFs_0107重组方式复杂,传播风险高,在以同性传播途径为主的地区应加强对新URFs_0107的监测和严格控制。
The transmission of Unique Recombinant Forms (URFs) has complicated the molecular epidemic of HIV-1. This increasing genetic diversity has implications for prevention surveillance, diagnosis, and vaccine design. In this study, we characterized the HIV-1 URFs from 135 newly diagnosed HIV-1 infected cases between 2016 and 2020 in Shenyang, northeast China and analyzed the evolutionary relationship of them by phylogenetic and recombination approaches. Among 135 URFs, we found that the CRF01_AE/CRF07_BC recombinants were the most common (81.5%, 110/135), followed by CRF01_AE/B (11.9%, 16/135), B/C (3.7%, 5/135), and others (3.0%, 4/135). 94.8% (128/135) of patients infected by URFs were through homosexual contact. Among 110 URFs_0107, 60 (54.5%) formed 11 subclusters (branch support value = 1) and shared the consistent recombination structure, respectively. Four subclusters have caused small-scale spread among different high-risk populations. Although the recombination structures of URFs_0107 are various, the hotspots of recombinants gathered between position 2,508 and 2,627 (relative to the HXB2 position). Moreover, the CRF07_BC and CRF01AE fragments of URFs_0107 were mainly derived from the MSM population. In brief, our results reveal the complex recombinant modes and the high transmission risk of URFs_0107, which calls for more attention on the new URFs_0107 monitoring and strict control in the areas led by homosexual transmission route.
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