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Wang J, Li W, Gong X, Wang Z, Wang Y, Ling J, Jiang Z, Zhu G, Li Y. Recombination and amino acid point mutations in VP3 exhibit a synergistic effect on increased virulence of rMDPV. Virulence 2024; 15:2366874. [PMID: 38869140 PMCID: PMC11178272 DOI: 10.1080/21505594.2024.2366874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Accepted: 05/24/2024] [Indexed: 06/14/2024] Open
Abstract
Recombinant Muscovy duck parvovirus (rMDPV) is a product of genetic recombination between classical Muscovy duck parvovirus (MDPV) and goose parvovirus (GPV). The recombination event took place within a 1.1-kb DNA segment located in the middle of the VP3 gene, and a 187-bp sequence extending from the P9 promoter to the 5' initiation region of the Rep1 ORF. This resulted in the alteration of five amino acids within VP3. Despite these genetic changes, the precise influence of recombination and amino acid mutations on the pathogenicity of rMDPV remains ambiguous. In this study, based on the rMDPV strain ZW and the classical MDPV strain YY, three chimeric viruses (rZW-mP9, rZW-mPR187, and rYY-rVP3) and the five amino acid mutations-introduced mutants (rZW-g5aa and rYY-5aa(ZW)) were generated using reverse genetic technology. When compared to the parental virus rZW, rZW-g5aa exhibited a prolonged mean death time (MDT) and a decreased median lethal dose (ELD50) in embryonated duck eggs. In contrast, rYY-5aa(ZW) did not display significant differences in MDT and ELD50 compared to rYY. In 2-day-old Muscovy ducklings, infection with rZW-g5aa and rYY-5aa(ZW) resulted in mortality rates of only 20% and 10%, respectively, while infections with the three chimeric viruses (rZW-mP9, rZW-mPR187, rYY-rVP3) and rZW still led to 100% mortality. Notably, rYY-rVP3, containing the VP3 region from strain ZW, exhibited 50% mortality in 6-day-old Muscovy ducklings and demonstrated significant horizontal transmission. Collectively, our findings indicate that recombination and consequent amino acid changes in VP3 have a synergistic impact on the heightened virulence of rMDPV in Muscovy ducklings.
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Affiliation(s)
- Jianye Wang
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China
- Department of Preventive Veterinary Medicine, Jiangsu Co-Innovation Center for Important Animal Infectious Diseases and Zoonosis, Yangzhou, Jiangsu, China
| | - Wanmei Li
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China
- Department of Preventive Veterinary Medicine, Jiangsu Co-Innovation Center for Important Animal Infectious Diseases and Zoonosis, Yangzhou, Jiangsu, China
| | - Xiaoyan Gong
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China
- Department of Preventive Veterinary Medicine, Jiangsu Co-Innovation Center for Important Animal Infectious Diseases and Zoonosis, Yangzhou, Jiangsu, China
| | - Zhixian Wang
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China
- Department of Preventive Veterinary Medicine, Jiangsu Co-Innovation Center for Important Animal Infectious Diseases and Zoonosis, Yangzhou, Jiangsu, China
| | - Yu Wang
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China
- Department of Preventive Veterinary Medicine, Jiangsu Co-Innovation Center for Important Animal Infectious Diseases and Zoonosis, Yangzhou, Jiangsu, China
| | - Jueyi Ling
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China
- Department of Preventive Veterinary Medicine, Jiangsu Co-Innovation Center for Important Animal Infectious Diseases and Zoonosis, Yangzhou, Jiangsu, China
| | - Zhiwei Jiang
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China
- Department of Preventive Veterinary Medicine, Jiangsu Co-Innovation Center for Important Animal Infectious Diseases and Zoonosis, Yangzhou, Jiangsu, China
| | - Guoqiang Zhu
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China
- Department of Preventive Veterinary Medicine, Jiangsu Co-Innovation Center for Important Animal Infectious Diseases and Zoonosis, Yangzhou, Jiangsu, China
| | - Yufeng Li
- Shandong Academy of Agricultural Sciences, Institute of Poultry Science, Jinan, Shandong, China
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Liu X, Wang Y, Yang Z, Wu Z, Li J, Tong Z, Li X, Ren F, Zhu X, Jin M, Mao G. Analysis of the immunological response to antiviral therapy in patients with different subtypes of HIV/AIDS: a retrospective cohort study. BMJ Open 2024; 14:e072597. [PMID: 38749684 PMCID: PMC11097878 DOI: 10.1136/bmjopen-2023-072597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Accepted: 04/26/2024] [Indexed: 05/18/2024] Open
Abstract
OBJECTIVE To evaluate the effectiveness of standardised antiretroviral therapy (ART) among different HIV subtypes in people living with HIV/AIDS (PLWHA), and to screen the best ART regimen for this patient population. DESIGN A retrospective cohort study was performed, and PLWHA residing in Huzhou, China, between 2018 and 2020, were enrolled. SETTING AND PARTICIPANTS Data from 625 patients, who were newly diagnosed with HIV/AIDS in the AIDS Prevention and Control Information System in Huzhou between 2018 and 2020, were reviewed. ANALYSIS AND OUTCOME MEASURES Data regarding demographic characteristics and laboratory investigation results were collected. Immune system recovery was used to assess the effectiveness of ART, and an increased percentage of CD4+ T lymphocyte counts >30% after receiving ART for >1 year was determined as immunopositive. A multiple logistic regression model was used to comprehensively quantify the association between PLWHA immunological response status and virus subtype. In addition, the joint association between different subtypes and treatment regimens on immunological response status was investigated. RESULTS Among 326 enrolled PLWHA with circulating recombinant forms (CRFs) CRF01_AE, CRF07_BC and other HIV/AIDS subtypes, the percentages of immunopositivity were 74.0%, 65.6% and 69.6%, respectively. According to multivariate logistic regression models, there was no difference in the immunological response between patients with CRF01_AE, CRF07_BC and other subtypes of HIV/AIDS who underwent ART (CRF07_BC: adjusted OR (aOR) (95% CI) = 0.8 (0.4 to 1.4); other subtypes: aOR (95% CI) = 1.2 (0.6 to 2.3)). There was no evidence of an obvious joint association between HIV subtypes and ART regimens on immunological response. CONCLUSIONS Standardised ART was beneficial to all PLWHA, regardless of HIV subtypes, although it was more effective, to some extent, in PLWHA with CRF01_AE.
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Affiliation(s)
- Xiaoqi Liu
- Huzhou Center for Disease Control and Prevention, Huzhou, Zhejiang, China
| | - Yanan Wang
- Huzhou Center for Disease Control and Prevention, Huzhou, Zhejiang, China
- Division of Epidemiology and Health Statistics, Department of Preventive Medicine, School of Public Health & Management, Wenzhou Medical University, Wenzhou, Zhejiang, China
- Center on Evidence-Based Medicine & Clinical Epidemiological Research, School of Public Health & Management, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Zhongrong Yang
- Huzhou Center for Disease Control and Prevention, Huzhou, Zhejiang, China
| | - Zhenqian Wu
- Huzhou Center for Disease Control and Prevention, Huzhou, Zhejiang, China
| | - Jing Li
- Huzhou Center for Disease Control and Prevention, Huzhou, Zhejiang, China
| | - Zhaowei Tong
- Huzhou Central Hospital, Huzhou, Zhejiang, China
| | - Xiaofeng Li
- Huzhou Central Hospital, Huzhou, Zhejiang, China
| | - Feilin Ren
- Huzhou Center for Disease Control and Prevention, Huzhou, Zhejiang, China
| | - Xiaojuan Zhu
- Huzhou Center for Disease Control and Prevention, Huzhou, Zhejiang, China
| | - Meihua Jin
- Huzhou Center for Disease Control and Prevention, Huzhou, Zhejiang, China
| | - Guangyun Mao
- Division of Epidemiology and Health Statistics, Department of Preventive Medicine, School of Public Health & Management, Wenzhou Medical University, Wenzhou, Zhejiang, China
- Center on Evidence-Based Medicine & Clinical Epidemiological Research, School of Public Health & Management, Wenzhou Medical University, Wenzhou, Zhejiang, China
- National Clinical Research Center for Ocular Diseases, Wenzhou, Zhejiang, China
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Fan Q, Liu J, Chai C, Zhu S, Fang Q, Guo Z, Xia Y, Ding X, Zhang J. Identification and genomic characterization of a novel HIV-1 unique recombinant form (CRF01_AE/CRF07_BC) in Zhejiang Province, China. Virus Genes 2023; 59:142-147. [PMID: 36301459 PMCID: PMC9832081 DOI: 10.1007/s11262-022-01945-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Accepted: 10/07/2022] [Indexed: 01/14/2023]
Abstract
Mutation and recombination are important mechanisms leading to the frequent evolution and genetic diversity of viruses as HIV-1. In this study, we identified the near full-length genomic characterization of a novel HIV-1 unique recombinant form (URF) strain (Sample ID: ZJ20202195/ZJ/CHN/2020, hereafter referred to as ZJ20202195) isolated during the HIV-1 molecular surveillance in 2020 in Zhejiang Province, China, through different recombination analysis tools and phylogenetic analysis. Our results amply proved that the near full-length genome (NFLG) sequence of ZJ20202195 was a novel HIV-1 unique recombinant form (URF) consisting of CRF01_AE and CRF07_BC subtype, and delimited three recombinant segments, of which the Segment I (HXB2:776-5559 nucleotide (nt)) and Segment III (HXB2:6224-9412 nt) were mainly originated from CRF01_AE cluster g4a strains prevalent in China and Segment II (HXB2:5560-6223 nt) was from CRF07_BC subtype. Overall, our findings provide insight and a scientific basis in the genetic diversity and accurate determination of HIV-1 recombinant strains in China.
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Affiliation(s)
- Qin Fan
- Department of HIV/AIDS Control and Prevention, Zhejiang Provincial Center for Disease Control and Prevention, No.3399, Binsheng Road, Hangzhou, 310051 People’s Republic of China
| | - Jing Liu
- School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou, 325035 People’s Republic of China
| | - Chengliang Chai
- Department of HIV/AIDS Control and Prevention, Zhejiang Provincial Center for Disease Control and Prevention, No.3399, Binsheng Road, Hangzhou, 310051 People’s Republic of China
| | - Shuying Zhu
- Department of Microbiological Analysis, Jinhua Municipal Center for Disease Control and Prevention, Jinhua, 321002 People’s Republic of China
| | - Qionglou Fang
- Department of Microbiological Analysis, Jinhua Municipal Center for Disease Control and Prevention, Jinhua, 321002 People’s Republic of China
| | - Zhihong Guo
- Department of HIV/AIDS Control and Prevention, Zhejiang Provincial Center for Disease Control and Prevention, No.3399, Binsheng Road, Hangzhou, 310051 People’s Republic of China
| | - Yan Xia
- Department of HIV/AIDS Control and Prevention, Zhejiang Provincial Center for Disease Control and Prevention, No.3399, Binsheng Road, Hangzhou, 310051 People’s Republic of China
| | - Xiaobei Ding
- Department of HIV/AIDS Control and Prevention, Zhejiang Provincial Center for Disease Control and Prevention, No.3399, Binsheng Road, Hangzhou, 310051 People’s Republic of China
| | - Jiafeng Zhang
- Department of HIV/AIDS Control and Prevention, Zhejiang Provincial Center for Disease Control and Prevention, No.3399, Binsheng Road, Hangzhou, 310051 People’s Republic of China
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Zhang X, Li H, Liu Z, Zhao Y, Zeng Y, Dong Y, Li L, Zhang C. An HFman probe-based reverse transcription loop-mediated isothermal amplification (RT-LAMP) assay for HIV-1 detection. Mol Cell Probes 2022; 64:101834. [PMID: 35732248 DOI: 10.1016/j.mcp.2022.101834] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2022] [Revised: 06/06/2022] [Accepted: 06/13/2022] [Indexed: 10/17/2022]
Abstract
Loop-mediated isothermal amplification (LAMP) is suitable for the development of a rapid and cost-effective nucleic acid technique for point of care (POC) applications. However, LAMP methods often generate non-specific amplification, therefore inevitably resulting in false positive results especially when sequence-independent dyes are used to indirectly reflect the results. In this study, we established and optimized a reverse transcription LAMP (RT-LAMP) assay with a high-fidelity DNA polymerase-mediated fluorescent probe (HFman probe) for human immunodeficiency virus-1 (HIV-1) detection. The assay showed high sensitivity and specificity. Using 101 plasma samples with different HIV-1 viral load, we demonstrated that our assay can detect the major HIV-1 subtypes circulating in China, including CRF01_AE, CRF07_BC, CRF08_BC, CRF55_01B, and unique recombinant forms (URFs). We also compared our assay with an approved commercial real-time quantitative polymerase chain reaction (RT-qPCR) kit and found the sensitivity, specificity and consistency was 88.8%, 100% and 89.1%, respectively. The HFman probe-based RT-LAMP assay is a high specific detection method that is rapid, variant-tolerant and simple to operate, and thus is of great significance for timely disclosure of HIV status and rapid POC diagnosis.
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Affiliation(s)
- Xiaoling Zhang
- Shanghai Clinical Research Center for Infectious Disease (HIV/AIDS), Shanghai Public Health Clinical Center, Fudan University, Shanghai, 201508, China
| | - Hanping Li
- Department of Virology, State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, 100071, China
| | - Ziwei Liu
- Department of Virology, State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, 100071, China
| | - Yongjuan Zhao
- Shanghai Clinical Research Center for Infectious Disease (HIV/AIDS), Shanghai Public Health Clinical Center, Fudan University, Shanghai, 201508, China
| | - Yi Zeng
- Shanghai Clinical Research Center for Infectious Disease (HIV/AIDS), Shanghai Public Health Clinical Center, Fudan University, Shanghai, 201508, China
| | - Yajuan Dong
- Shanghai Clinical Research Center for Infectious Disease (HIV/AIDS), Shanghai Public Health Clinical Center, Fudan University, Shanghai, 201508, China; Center for Pathogen Research, College of Life Sciences, Henan Normal University, Xinxiang, 453007, China
| | - Lin Li
- Department of Virology, State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, 100071, China.
| | - Chiyu Zhang
- Shanghai Clinical Research Center for Infectious Disease (HIV/AIDS), Shanghai Public Health Clinical Center, Fudan University, Shanghai, 201508, China.
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Xiao M, Feng Y, Gao L, Yang C, Liu J, He M, Li J, Zhang M, Dong X, Xia X. Characterization of a Newly Emerging HIV-1 Second-Generation Recombinant Form (CRF126_0107) Among Heterosexuals in Yunnan, China. J Infect 2022; 84:e112-e115. [PMID: 35341830 DOI: 10.1016/j.jinf.2022.03.018] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2022] [Accepted: 03/20/2022] [Indexed: 11/19/2022]
Affiliation(s)
- Meng Xiao
- Faculty of Life Science and Technology & The affiliated Anning first people's hospital, Kunming University of Science and Technology, Kunming, China
| | - Yue Feng
- Faculty of Life Science and Technology & The affiliated Anning first people's hospital, Kunming University of Science and Technology, Kunming, China.
| | - Li Gao
- Department of Infectious Diseases, Yunnan Provincial Infectious Diseases Hospital, Kunming China
| | - Cuixian Yang
- Department of Infectious Diseases, Yunnan Provincial Infectious Diseases Hospital, Kunming China
| | - Jiafa Liu
- Department of Infectious Diseases, Yunnan Provincial Infectious Diseases Hospital, Kunming China
| | - Meilan He
- Faculty of Life Science and Technology & The affiliated Anning first people's hospital, Kunming University of Science and Technology, Kunming, China
| | - Jianjian Li
- Department of Infectious Diseases, Yunnan Provincial Infectious Diseases Hospital, Kunming China
| | - Mi Zhang
- Department of Infectious Diseases, Yunnan Provincial Infectious Diseases Hospital, Kunming China
| | - Xingqi Dong
- Department of Infectious Diseases, Yunnan Provincial Infectious Diseases Hospital, Kunming China.
| | - Xueshan Xia
- Faculty of Life Science and Technology & The affiliated Anning first people's hospital, Kunming University of Science and Technology, Kunming, China.
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