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Tréguier Y, Cochard J, Burlaud-Gaillard J, Lemoine R, Chouteau P, Roingeard P, Meunier JC, Maquart M. The envelope protein of Zika virus interacts with apolipoprotein E early in the infectious cycle and this interaction is conserved on the secreted viral particles. Virol J 2022; 19:124. [PMID: 35902969 PMCID: PMC9331583 DOI: 10.1186/s12985-022-01860-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Accepted: 07/21/2022] [Indexed: 11/23/2022] Open
Abstract
Background Zika virus (ZIKV), a member of the Flaviviridae family, has caused massive outbreaks of infection in tropical areas over the last decade and has now begun spreading to temperate countries. Little is currently known about the specific host factors involved in the intracellular life cycle of ZIKV. Flaviviridae viruses interact closely with host-cell lipid metabolism and associated secretory pathways. Another Flaviviridae, hepatitis C virus, is highly dependent on apolipoprotein E (ApoE) for the completion of its infectious cycle. We therefore investigated whether ZIKV also interacted with this protein. Methods ZIKV infections were performed on both liver and microglia derived cell lines in order to proceed to colocalization analysis and immunoprecipitation assays of ApoE and Zika envelope glycoprotein (Zika E). Transmission electron microscopy combined to immunogold labeling was also performed on the infected cells and related supernatant to study the association of ApoE and Zika E protein in the virus-induced membrane rearrangements and secreted particles, respectively. Finally, the potential of neutralization of anti-ApoE antibodies on ZIKV particles was studied. Result We demonstrated an interaction between ApoE and the Zika E protein. This specific interaction was observed in virus-induced host-cell membrane rearrangements, but also on newly formed intracellular particles. The partial neutralizing effect of anti-ApoE antibody and the immunogold labeling of the two proteins on secreted virions indicates that this interaction is conserved during ZIKV intracellular trafficking and release. Conclusions These data suggest that another member of the Flaviviridae also interacts with ApoE, indicating that this could be a common mechanism for the viruses from this family.
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Affiliation(s)
- Yannick Tréguier
- INSERM U1259 MAVIVH, Université de Tours et CHU de Tours, Tours, France
| | - Jade Cochard
- INSERM U1259 MAVIVH, Université de Tours et CHU de Tours, Tours, France
| | - Julien Burlaud-Gaillard
- INSERM U1259 MAVIVH, Université de Tours et CHU de Tours, Tours, France.,Plateforme IBiSA des Microscopies, Université de Tours et CHU de Tours, Tours, France
| | - Roxane Lemoine
- Plateforme B Cell Ressources, EA4245 T2I, Université de Tours, Tours, France
| | - Philippe Chouteau
- INSERM U1259 MAVIVH, Université de Tours et CHU de Tours, Tours, France
| | - Philippe Roingeard
- INSERM U1259 MAVIVH, Université de Tours et CHU de Tours, Tours, France. .,Plateforme IBiSA des Microscopies, Université de Tours et CHU de Tours, Tours, France.
| | | | - Marianne Maquart
- INSERM U1259 MAVIVH, Université de Tours et CHU de Tours, Tours, France.
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Liu J, Ren X, Li H, Yu X, Zhao B, Liu B, Ning Z. Development of the reverse genetics system for emerging atypical porcine pestivirus using in vitro and intracellular transcription systems. Virus Res 2020; 283:197975. [PMID: 32311384 DOI: 10.1016/j.virusres.2020.197975] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 04/06/2020] [Accepted: 04/08/2020] [Indexed: 01/31/2023]
Abstract
Atypical porcine pestivirus (APPV) is a novel pestivirus causing congenital tremor (CT) type AII in piglets and exhibiting a broad geographical distribution. Lack of an operating system for the viral genome is one of bottlenecks which restrict further research on pathogenesis and gene functions of APPV. Reverse genetics system (RGS) is a feasible solution to this bottleneck problem, but, to-date, no RGSs have been developed for APPV. Here, for the first time, recombinant APPV CH-GD2017 were rescued using in vitro and intracellular transcription systems and the virons were observed via transmission electron microscopy. As the process of in vitro transcription is time-consuming and inefficient, a full-length cDNA clone in an intracellular transcription was further constructed using an RNA polymerase II system. Then, the rescued virus was identified via RT-PCR detection, indirect immunofluorescent assay, and transmission electron microscopy. Development of the RGS for APPV will provide an important tool for further research on this newly emerging pathogen.
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Affiliation(s)
- Jianxin Liu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642
| | - Xujiao Ren
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642
| | - Huizi Li
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642
| | - Xianglong Yu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642
| | - Bingqian Zhao
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642
| | - Boyang Liu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642
| | - Zhangyong Ning
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642.
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Tsai P, Lin TY, Cheng SL, Sun HY, Chen SF, Young KC. Differential dynamics of hepatic protein expressions with long-term cultivated hepatitis C virus infection. JOURNAL OF MICROBIOLOGY, IMMUNOLOGY, AND INFECTION = WEI MIAN YU GAN RAN ZA ZHI 2019; 53:715-723. [PMID: 30837187 DOI: 10.1016/j.jmii.2019.01.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Revised: 12/28/2018] [Accepted: 01/16/2019] [Indexed: 12/16/2022]
Abstract
BACKGROUND The liver maintains blood chemical homeostasis by active uptake and secretion through endocytosis, exocytosis, and intracellular trafficking between the plasma and intracellular membranes. Hepatitis C virus (HCV) infection affects the host membrane architecture and might thus impair the regulation of the cellular transportation machinery. Additionally, the hepatic expressions of differential protein dynamics with long-term HCV infection remain fully recover. METHODS In this study, comparative proteomic analysis was performed in HCV-infected and mock-control Huh7 cells according to the viral dynamics of exponential, plateau, declined, and silencing phases at the acute stage, and the chronic stage. The proteins with <0.8-fold and ≥1.25-fold changes in expression were analyzed using functional pathway clustering prediction. RESULTS The combined experimental repetitions identified full-spectrum cellular proteins in each of 5 sample sets from acute exponential, plateau, declined, and silencing phases, and the chronic stage. The clustering results revealed that HCV infection might differentiate regulatory pathways involving extracellular exosome, cadherin, melanosome, and RNA binding. Overall host proteins in HCV-infected cells exhibited kinetic pattern 1, in which cellular expression was downregulated from the acute exponential to plateau phases, reached a nadir, and was then elevated at the chronic stage. The proteins involved in the membrane-budding pathway exhibited kinetic pattern 2, in which their expressions were distinctly downregulated at the chronic stage. CONCLUSION The current comparative proteomics revealed the differential regulatory effects of HCV infection on host intracellular transport functional pathways, which might contribute to the pathogenic mechanisms of HCV in hepatocytes that sustain long-term infection.
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Affiliation(s)
- Peiju Tsai
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Tze-Yu Lin
- Department of Chemistry, National Taiwan Normal University, Taipei, Taiwan
| | - Shiang-Lin Cheng
- Department of Medical Laboratory Science and Biotechnology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Hung-Yu Sun
- Department of Medical Laboratory Science and Biotechnology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Sung-Fang Chen
- Department of Chemistry, National Taiwan Normal University, Taipei, Taiwan.
| | - Kung-Chia Young
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan; Department of Medical Laboratory Science and Biotechnology, College of Medicine, National Cheng Kung University, Tainan, Taiwan.
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Sager G, Gabaglio S, Sztul E, Belov GA. Role of Host Cell Secretory Machinery in Zika Virus Life Cycle. Viruses 2018; 10:E559. [PMID: 30326556 PMCID: PMC6213159 DOI: 10.3390/v10100559] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Revised: 10/11/2018] [Accepted: 10/12/2018] [Indexed: 12/16/2022] Open
Abstract
The high human cost of Zika virus infections and the rapid establishment of virus circulation in novel areas, including the United States, present an urgent need for countermeasures against this emerging threat. The development of an effective vaccine against Zika virus may be problematic because of the cross reactivity of the antibodies with other flaviviruses leading to antibody-dependent enhancement of infection. Moreover, rapidly replicating positive strand RNA viruses, including Zika virus, generate large spectrum of mutant genomes (quasi species) every replication round, allowing rapid selection of variants resistant to drugs targeting virus-specific proteins. On the other hand, viruses are ultimate cellular parasites and rely on the host metabolism for every step of their life cycle, thus presenting an opportunity to manipulate host processes as an alternative approach to suppress virus replication and spread. Zika and other flaviviruses critically depend on the cellular secretory pathway, which transfers proteins and membranes from the ER through the Golgi to the plasma membrane, for virion assembly, maturation and release. In this review, we summarize the current knowledge of interactions of Zika and similar arthropod-borne flaviviruses with the cellular secretory machinery with a special emphasis on virus-specific changes of the secretory pathway. Identification of the regulatory networks and effector proteins required to accommodate the trafficking of virions, which represent a highly unusual cargo for the secretory pathway, may open an attractive and virtually untapped reservoir of alternative targets for the development of superior anti-viral drugs.
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Affiliation(s)
- Garrett Sager
- Department of Cell, Developmental and Integrative Biology, University of Alabama at Birmingham, Birmingham AL 35294, UK.
| | - Samuel Gabaglio
- Department of Veterinary Medicine, Virginia-Maryland Regional College of Veterinary Medicine, University of Maryland, College Park, MD 20742, USA.
| | - Elizabeth Sztul
- Department of Cell, Developmental and Integrative Biology, University of Alabama at Birmingham, Birmingham AL 35294, UK.
| | - George A Belov
- Department of Veterinary Medicine, Virginia-Maryland Regional College of Veterinary Medicine, University of Maryland, College Park, MD 20742, USA.
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Luo F, Liu J, Wang Y, Xu M, Ren Z. PGG impairs herpes simplex virus type 1 infection via blocking capsid assembly. Future Virol 2018. [DOI: 10.2217/fvl-2017-0109] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Aim: Pentagalloylglucose (PGG), a hydrolyzable polyphenol was isolated from Phyllanthus emblica, which exhibited a strong inhibitory activity on HSV-1 infection, but its underlying mechanisms have not been completely delineated. Results/methodology: Using TEM, we first observed that PGG blocked the formation and maturation of HSV-1 capsid particles. Hence, we engaged in exploring the molecular mechanisms of PGG on the capsid assembly. At last, we found that PGG also blocked the relocalization of capsid proteins from the cytoplasm to the nucleus where the assembly took place. Conclusion: The current studies, for the first time, demonstrated acetylated microtubules were needed at this process of capsid proteins nuclear translocation. PGG also impairs herpes simplex virus type 1 infection by blocking capsid assembly.
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Affiliation(s)
- Fan Luo
- Guangzhou Jinan Biomedicine Research & Development Center, National Engineering Research Center of Genetic Medicine, Jinan University, Guangzhou, Guangdong, China
- The Industry-Academia-Research Demonstration Base of Guangdong Higher Education Institutes (Namely Innovative Culturing Base of Graduates), Jinan University, Guangzhou, Guangdong, China
- College of Life Science & Technology, Jinan University, Guangzhou, Guangdong, China
| | - Junwei Liu
- Guangzhou Jinan Biomedicine Research & Development Center, National Engineering Research Center of Genetic Medicine, Jinan University, Guangzhou, Guangdong, China
| | - Yifei Wang
- Guangzhou Jinan Biomedicine Research & Development Center, National Engineering Research Center of Genetic Medicine, Jinan University, Guangzhou, Guangdong, China
- The Industry-Academia-Research Demonstration Base of Guangdong Higher Education Institutes (Namely Innovative Culturing Base of Graduates), Jinan University, Guangzhou, Guangdong, China
| | - Mingfang Xu
- College of Life Science & Technology, Jinan University, Guangzhou, Guangdong, China
| | - Zhe Ren
- Guangzhou Jinan Biomedicine Research & Development Center, National Engineering Research Center of Genetic Medicine, Jinan University, Guangzhou, Guangdong, China
- The Industry-Academia-Research Demonstration Base of Guangdong Higher Education Institutes (Namely Innovative Culturing Base of Graduates), Jinan University, Guangzhou, Guangdong, China
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