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Chen S, Yan Y, Gao L, Gao S, Feng K, Li H, Zhang X, Chen W, Chen F, Xie Q. Proteomic profiling of purified avian leukosis virus subgroup J particles. Vet Microbiol 2023; 284:109821. [PMID: 37536160 DOI: 10.1016/j.vetmic.2023.109821] [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: 05/18/2023] [Revised: 06/16/2023] [Accepted: 06/20/2023] [Indexed: 08/05/2023]
Abstract
While the presence of host cell proteins in virions and their role in viral life cycles have been demonstrated in various viruses, such characteristics have remained largely unknown in avian leukosis virus (ALV). To investigate whether this is the case in ALV, we purified high-integrity and high-purity virions from the avian leukosis virus subgroup J (ALV-J) and subjected them to proteome analysis using nano LC-MS/MS. This analysis identified 53 cellular proteins that are incorporated into mature ALV-J virions, and we verified the reliability of the packaged cellular proteins through subtilisin digestion and immunoblot analysis. Functional annotation revealed the potential functions of these proteins in the viral life cycle and tumorigenesis. Overall, our findings have important implications for understanding the interaction between ALV-J and its host, and provide new insights into the cellular requirements that define ALV-J infection.
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Affiliation(s)
- Sheng Chen
- Heyuan Branch, Guangdong Provincial Laboratory of Lingnan Modern Agricultural Science and Technology & Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou 510642, PR China; Guangdong Engineering Research Center for Vector Vaccine of Animal Virus, Guangzhou 510642, PR China; South China Collaborative Innovation Center for Poultry Disease Control and Product Safety, Guangzhou 510642, PR China; Key Laboratory of Animal Health Aquaculture and Environmental Control, Guangzhou 510642, Guangdong, PR China
| | - Yiming Yan
- Henry Fok School of Biology and Agriculture, Shaoguan University, Shaoguan 510642, PR China
| | - Liguo Gao
- Heyuan Branch, Guangdong Provincial Laboratory of Lingnan Modern Agricultural Science and Technology & Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou 510642, PR China
| | - Shuang Gao
- Henry Fok School of Biology and Agriculture, Shaoguan University, Shaoguan 510642, PR China
| | - Keyu Feng
- Heyuan Branch, Guangdong Provincial Laboratory of Lingnan Modern Agricultural Science and Technology & Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou 510642, PR China; Guangdong Engineering Research Center for Vector Vaccine of Animal Virus, Guangzhou 510642, PR China; South China Collaborative Innovation Center for Poultry Disease Control and Product Safety, Guangzhou 510642, PR China
| | - Hongxin Li
- Heyuan Branch, Guangdong Provincial Laboratory of Lingnan Modern Agricultural Science and Technology & Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou 510642, PR China; Guangdong Engineering Research Center for Vector Vaccine of Animal Virus, Guangzhou 510642, PR China; South China Collaborative Innovation Center for Poultry Disease Control and Product Safety, Guangzhou 510642, PR China
| | - Xinheng Zhang
- Heyuan Branch, Guangdong Provincial Laboratory of Lingnan Modern Agricultural Science and Technology & Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou 510642, PR China; Guangdong Engineering Research Center for Vector Vaccine of Animal Virus, Guangzhou 510642, PR China; South China Collaborative Innovation Center for Poultry Disease Control and Product Safety, Guangzhou 510642, PR China
| | - Weiguo Chen
- Heyuan Branch, Guangdong Provincial Laboratory of Lingnan Modern Agricultural Science and Technology & Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou 510642, PR China; Guangdong Engineering Research Center for Vector Vaccine of Animal Virus, Guangzhou 510642, PR China; South China Collaborative Innovation Center for Poultry Disease Control and Product Safety, Guangzhou 510642, PR China
| | - Feng Chen
- South China Collaborative Innovation Center for Poultry Disease Control and Product Safety, Guangzhou 510642, PR China; Key Laboratory of Animal Health Aquaculture and Environmental Control, Guangzhou 510642, Guangdong, PR China
| | - Qingmei Xie
- Heyuan Branch, Guangdong Provincial Laboratory of Lingnan Modern Agricultural Science and Technology & Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou 510642, PR China; Guangdong Engineering Research Center for Vector Vaccine of Animal Virus, Guangzhou 510642, PR China; South China Collaborative Innovation Center for Poultry Disease Control and Product Safety, Guangzhou 510642, PR China; Key Laboratory of Animal Health Aquaculture and Environmental Control, Guangzhou 510642, Guangdong, PR China.
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2
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Abe T, Marutani Y, Deng L, Matsui C, Fukasawa M, Suzuki R, Wakita T, Matsuura Y, Shoji I. Hepatitis C Virus Disrupts Annexin 5-Mediated Occludin Integrity through Downregulation of Protein Kinase Cα (PKCα) and PKCη Expression, Thereby Promoting Viral Propagation. J Virol 2023; 97:e0065523. [PMID: 37272842 PMCID: PMC10308894 DOI: 10.1128/jvi.00655-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Accepted: 05/19/2023] [Indexed: 06/06/2023] Open
Abstract
Annexins (ANXs) comprise a family of calcium- and phospholipid-binding proteins and are implicated in the hepatitis C virus (HCV) life cycle. Here, we demonstrate a novel role of ANX5 in the HCV life cycle. Comparative analysis by quantitative PCR in human hepatoma cells revealed that ANX2, ANX4, and ANX5 were highly expressed among the ANX family proteins. Knockdown of ANX5 mRNA resulted in marked enhancement of HCV RNA replication but had no effect on either HCV translation or assembly. Using the HCV pseudoparticle (HCVpp) system, we observed enhancement of HCVpp infectivity in ANX5 knockdown Huh-7OK1 cells, suggesting that ANX5 is involved in suppression of HCV entry. Additionally, we observed that subcellular localizations of tight-junction proteins, such as claudin 1 (CLDN1) and occludin (OCLN), were disrupted in the ANX5 knockdown cells. It was reported that HCV infection was facilitated by disruption of OCLN distribution and that proper distribution of OCLN was regulated by its phosphorylation. Knockdown of ANX5 resulted in a decrease of OCLN phosphorylation, thereby disrupting OCLN distribution and HCV infection. Further analysis revealed that protein kinase C (PKC) isoforms, including PKCα and PKCη, play important roles in the regulation of ANX5-mediated phosphorylation and distribution of OCLN and in the restriction of HCV infection. HCV infection reduced OCLN phosphorylation through the downregulation of PKCα and PKCη expression. Taken together, these results suggest that ANX5, PKCα, and PKCη contribute to restriction of HCV infection by regulating OCLN integrity. We propose a model that HCV disrupts ANX5-mediated OCLN integrity through downregulation of PKCα and PKCη expression, thereby promoting HCV propagation. IMPORTANCE Host cells have evolved host defense machinery to restrict viral infection. However, viruses have evolved counteracting strategies to achieve their infection. In the present study, we obtained results suggesting that ANX5 and PKC isoforms, including PKCα and PKCη, contribute to suppression of HCV infection by regulating the integrity of OCLN. The disruption of OCLN integrity increased HCV infection. We also found that HCV disrupts ANX5-mediated OCLN integrity through downregulation of PKCα and PKCη expression, thereby promoting viral infection. We propose that HCV disrupts ANX5-mediated OCLN integrity to establish a persistent infection. The disruption of tight-junction assembly may play important roles in the progression of HCV-related liver diseases.
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Affiliation(s)
- Takayuki Abe
- Division of Infectious Disease Control, Center for Infectious Diseases, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Yuki Marutani
- Division of Infectious Disease Control, Center for Infectious Diseases, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Lin Deng
- Division of Infectious Disease Control, Center for Infectious Diseases, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Chieko Matsui
- Division of Infectious Disease Control, Center for Infectious Diseases, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Masayoshi Fukasawa
- Department of Biochemistry and Cell Biology, National Institute of Infectious Diseases, Tokyo, Japan
| | - Ryosuke Suzuki
- Department of Virology II, National Institute of Infectious Diseases, Tokyo, Japan
| | - Takaji Wakita
- Department of Virology II, National Institute of Infectious Diseases, Tokyo, Japan
| | - Yoshiharu Matsuura
- Center for Infectious Diseases Education and Research (CiDER), Osaka University, Osaka, Japan
- Laboratory of Virus Control, Research Institute for Microbial Diseases (RIMD), Osaka University, Osaka, Japan
| | - Ikuo Shoji
- Division of Infectious Disease Control, Center for Infectious Diseases, Kobe University Graduate School of Medicine, Kobe, Japan
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3
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HSP27 Interacts with Nonstructural Proteins of Porcine Reproductive and Respiratory Syndrome Virus and Promotes Viral Replication. Pathogens 2023; 12:pathogens12010091. [PMID: 36678439 PMCID: PMC9860683 DOI: 10.3390/pathogens12010091] [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: 11/29/2022] [Revised: 12/30/2022] [Accepted: 01/03/2023] [Indexed: 01/09/2023] Open
Abstract
Heat shock protein 27 (HSP27) is a multifunctional protein and belongs to the small HSP family. It has been shown that HSP27 is involved in viral replication as a cellular chaperone, but the function of HSP27 during porcine reproductive and respiratory syndrome virus (PRRSV) infections remains unexplored. Here, we found that PRRSV replication can induce HSP27 expression and phosphorylation in vitro. HSP27 overexpression promoted PRRSV replication, whereas its knockdown reduced PRRSV proliferation. Additionally, suppressing HSP27 phosphorylation reduced PRRSV replication and the level of viral double-stranded RNA (dsRNA), a marker of the viral replication and transcription complexes (RTCs). Furthermore, HSP27 can interact with multiple viral nonstructural proteins (nsps), including nsp1α, nsp1β, nsp5, nsp9, nsp11 and nsp12. Suppressing the phosphorylation of HSP27 almost completely disrupted its interaction with nsp1β and nsp12. Altogether, our study revealed that HSP27 plays an important role in PRRSV replication.
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4
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Liu J, Yao L, Huang S, Wang B, Li L, Li L, Gu W, Xiao S, Liu G. AMG487 inhibits PRRSV replication and ameliorates lung injury in pig lung xenografts by down-regulating the expression of ANXA2. Antiviral Res 2022; 202:105314. [DOI: 10.1016/j.antiviral.2022.105314] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 02/25/2022] [Accepted: 04/01/2022] [Indexed: 12/25/2022]
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5
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Khandelwal N, Chander Y, Kumar R, Riyesh T, Dedar RK, Kumar M, Gulati BR, Sharma S, Tripathi BN, Barua S, Kumar N. Antiviral activity of Apigenin against buffalopox: Novel mechanistic insights and drug-resistance considerations. Antiviral Res 2020; 181:104870. [PMID: 32707051 DOI: 10.1016/j.antiviral.2020.104870] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Revised: 06/29/2020] [Accepted: 07/01/2020] [Indexed: 12/13/2022]
Abstract
We describe herein that Apigenin, which is a dietary flavonoid, exerts a strong in vitro and in ovo antiviral efficacy against buffalopox virus (BPXV). Apigenin treatment was shown to inhibit synthesis of viral DNA, mRNA and proteins, without affecting other steps of viral life cycle such as attachment, entry and budding. Although the major mode of antiviral action of Apigenin was shown to be mediated via targeting certain cellular factors, a modest inhibitory effect of Apigenin was also observed directly on viral polymerase. We also evaluated the selection of drug-resistant virus variants under long-term selection pressure of Apigenin. Wherein Apigenin-resistant mutants were not observed up to ~ P20 (passage 20), a significant resistance was observed to the antiviral action of Apigenin at ~ P30. However, a high degree resistance could not be observed even up to P60. To the best of our knowledge, this is the first report describing in vitro and in ovo antiviral efficacy of Apigenin against poxvirus infection. The study also provides mechanistic insights on the antiviral activity of Apigenin and selection of potential Apigenin-resistant mutants upon long-term culture.
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Affiliation(s)
- Nitin Khandelwal
- National Centre for Veterinary Type Cultures, ICAR-National Research Centre on Equines, Hisar, India; Department of Biotechnology, GLA University, Mathura, UP, India
| | - Yogesh Chander
- National Centre for Veterinary Type Cultures, ICAR-National Research Centre on Equines, Hisar, India
| | - Ram Kumar
- National Centre for Veterinary Type Cultures, ICAR-National Research Centre on Equines, Hisar, India
| | - Thachamvally Riyesh
- National Centre for Veterinary Type Cultures, ICAR-National Research Centre on Equines, Hisar, India
| | - Ramesh Kumar Dedar
- Equine Production Campus, ICAR-National Research Centre on Equines, Hisar, India
| | - Manoj Kumar
- Department of Mathematics and Statistics, College of Basic Science and Humanities, CCS Haryana Agricultural University, Hisar, Haryana, India
| | - Baldev R Gulati
- Equine Health Unit, ICAR-National Research Centre on Equines, Hisar, India
| | - Shalini Sharma
- Department of Veterinary Physiology and Biochemistry, Lala Lajpat Rai University of Veterinary and Animal Sciences, Hisar, India
| | - Bhupendra N Tripathi
- National Centre for Veterinary Type Cultures, ICAR-National Research Centre on Equines, Hisar, India
| | - Sanjay Barua
- National Centre for Veterinary Type Cultures, ICAR-National Research Centre on Equines, Hisar, India.
| | - Naveen Kumar
- National Centre for Veterinary Type Cultures, ICAR-National Research Centre on Equines, Hisar, India.
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6
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Goldeck D, Perry DM, Hayes JWP, Johnson LPM, Young JE, Roychoudhury P, McLuskey EL, Moffat K, Bakker AQ, Kwakkenbos MJ, Frossard JP, Rowland RRR, Murtaugh MP, Graham SP. Establishment of Systems to Enable Isolation of Porcine Monoclonal Antibodies Broadly Neutralizing the Porcine Reproductive and Respiratory Syndrome Virus. Front Immunol 2019; 10:572. [PMID: 30972067 PMCID: PMC6445960 DOI: 10.3389/fimmu.2019.00572] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Accepted: 03/04/2019] [Indexed: 02/01/2023] Open
Abstract
The rapid evolution of porcine reproductive and respiratory syndrome viruses (PRRSV) poses a major challenge to effective disease control since available vaccines show variable efficacy against divergent strains. Knowledge of the antigenic targets of virus-neutralizing antibodies that confer protection against heterologous PRRSV strains would be a catalyst for the development of next-generation vaccines. Key to discovering these epitopes is the isolation of neutralizing monoclonal antibodies (mAbs) from immune pigs. To address this need, we sought to establish systems to enable the isolation of PRRSV neutralizing porcine mAbs. We experimentally produced a cohort of immune pigs by sequential challenge infection with four heterologous PRRSV strains spanning PRRSV-1 subtypes and PRRSV species. Whilst priming with PRRSV-1 subtype 1 did not confer full protection against a subsequent infection with a PRRSV-1 subtype 3 strain, animals were protected against a subsequent PRRSV-2 infection. The infection protocol resulted in high serum neutralizing antibody titers against PRRSV-1 Olot/91 and significant neutralization of heterologous PRRSV-1/-2 strains. Enriched memory B cells isolated at the termination of the study were genetically programmed by transduction with a retroviral vector expressing the Bcl-6 transcription factor and the anti-apoptotic Bcl-xL protein, a technology we demonstrated efficiently converts porcine memory B cells into proliferating antibody-secreting cells. Pools of transduced memory B cells were cultured and supernatants containing PRRSV-specific antibodies identified by flow cytometric staining of infected MARC-145 cells and in vitro neutralization of PRRSV-1. Collectively, these data suggest that this experimental system may be further exploited to produce a panel of PRRSV-specific mAbs, which will contribute both to our understanding of the antibody response to PRRSV and allow epitopes to be resolved that may ultimately guide the design of immunogens to induce cross-protective immunity.
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Affiliation(s)
| | - Dana M Perry
- The Pirbright Institute, Pirbright, United Kingdom.,School of Biosciences and Medicine, Faculty of Health and Medical Sciences, University of Surrey, Guildford, United Kingdom
| | - Jack W P Hayes
- The Pirbright Institute, Pirbright, United Kingdom.,School of Biosciences and Medicine, Faculty of Health and Medical Sciences, University of Surrey, Guildford, United Kingdom
| | - Luke P M Johnson
- The Pirbright Institute, Pirbright, United Kingdom.,School of Veterinary Science, Faculty of Health and Medical Sciences, University of Surrey, Guildford, United Kingdom
| | - Jordan E Young
- College of Veterinary Medicine, University of Minnesota, St. Paul, MN, United States
| | - Parimal Roychoudhury
- The Pirbright Institute, Pirbright, United Kingdom.,College of Veterinary Science and Animal Husbandry, Central Agricultural University, Aizawl, India
| | - Elle L McLuskey
- The Pirbright Institute, Pirbright, United Kingdom.,Faculty of Health and Medical Sciences, University of Surrey, Guildford, United Kingdom
| | - Katy Moffat
- The Pirbright Institute, Pirbright, United Kingdom
| | | | | | - Jean-Pierre Frossard
- Department of Virology, Animal and Plant Health Agency, Addlestone, United Kingdom
| | - Raymond R R Rowland
- College of Veterinary Medicine, Kansas State University, Manhattan, KS, United States
| | - Michael P Murtaugh
- College of Veterinary Medicine, University of Minnesota, St. Paul, MN, United States
| | - Simon P Graham
- The Pirbright Institute, Pirbright, United Kingdom.,School of Veterinary Science, Faculty of Health and Medical Sciences, University of Surrey, Guildford, United Kingdom
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7
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Santos-Valencia JC, Cancio-Lonches C, Trujillo-Uscanga A, Alvarado-Hernández B, Lagunes-Guillén A, Gutiérrez-Escolano AL. Annexin A2 associates to feline calicivirus RNA in the replication complexes from infected cells and participates in an efficient viral replication. Virus Res 2018; 261:1-8. [PMID: 30543874 DOI: 10.1016/j.virusres.2018.12.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Revised: 12/07/2018] [Accepted: 12/08/2018] [Indexed: 01/27/2023]
Abstract
Cellular proteins have been identified to participate in calicivirus replication in association with viral proteins and/or viral RNAs. By mass spectrometry from pull-down assays, we identified several cellular proteins bound to the feline calicivirus (FCV) genomic RNA; among them the lipid raft-associated scaffold protein Annexin (Anx) A2. AnxA2 colocalizes with FCV NS6/7 protein and with the dsRNA in infected cells; moreover, it was found associated with the viral RNA in the membrane fraction corresponding to the replication complexes (RCs), suggesting its role during FCV replication. AnxA2-knockdown from CrFK cells prior to infection with FCV caused a delay in the cytopathic effect, a strong reduction of viral non-structural proteins and dsRNA production, and a decrease of FCV yield in both cell-associated and supernatant fractions. Taken together, these results indicate that AnxA2 associates to the genomic RNA of FCV and is required for an efficient FCV replication.
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Affiliation(s)
- Juan Carlos Santos-Valencia
- Departamento de Infectómica y Patogénesis Molecular, Centro de Investigación y de Estudios Avanzados del IPN, Mexico City, Mexico
| | - Clotilde Cancio-Lonches
- Departamento de Infectómica y Patogénesis Molecular, Centro de Investigación y de Estudios Avanzados del IPN, Mexico City, Mexico
| | - Adrian Trujillo-Uscanga
- Departamento de Infectómica y Patogénesis Molecular, Centro de Investigación y de Estudios Avanzados del IPN, Mexico City, Mexico
| | - Beatriz Alvarado-Hernández
- Departamento de Infectómica y Patogénesis Molecular, Centro de Investigación y de Estudios Avanzados del IPN, Mexico City, Mexico
| | - Anel Lagunes-Guillén
- Departamento de Infectómica y Patogénesis Molecular, Centro de Investigación y de Estudios Avanzados del IPN, Mexico City, Mexico
| | - Ana Lorena Gutiérrez-Escolano
- Departamento de Infectómica y Patogénesis Molecular, Centro de Investigación y de Estudios Avanzados del IPN, Mexico City, Mexico.
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8
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Gale TV, Horton TM, Hoffmann AR, Branco LM, Garry RF. Host Proteins Identified in Extracellular Viral Particles as Targets for Broad-Spectrum Antiviral Inhibitors. J Proteome Res 2018; 18:7-17. [PMID: 30351952 DOI: 10.1021/acs.jproteome.8b00204] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Liquid chromatography mass spectrometry (LCMS) proteomic analyses have revealed that host proteins are often captured in extracellular virions. These proteins may play a role in viral replication or infectivity and can represent targets for broad-spectrum antiviral agent development. We utilized LCMS to determine the host protein composition of Lassa virus-like particles (LASV VLPs). Multiple host proteins incorporated in LASV VLPs are also incorporated in unrelated viruses, notably ribosomal proteins. We assembled a data set of host proteins incorporated into extracellular viral particles. The frequent incorporation of specific host proteins into viruses of diverse families suggests that interactions of these proteins with viral factors may be important for effective viral replication. Drugs that target virion-associated host proteins could affect the protein in the extracellular virion or the host cell. Compounds that target proteins incorporated into virions with high frequency, but with no known antiviral activity, were assayed in a scalable viral screening platform, and hits were tested in competent viral systems. One of these molecules, GAPDH modulating small molecule CGP 3466B maleate (Omigapil), exhibited a dose-dependent inhibition of HIV, dengue virus, and Zika virus.
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Affiliation(s)
- Trevor V Gale
- Department of Microbiology and Immunology , Tulane University , New Orleans , Louisiana 70112 , United States
| | - Timothy M Horton
- Department of Microbiology and Immunology , Tulane University , New Orleans , Louisiana 70112 , United States
| | - Andrew R Hoffmann
- Department of Microbiology and Immunology , Tulane University , New Orleans , Louisiana 70112 , United States
| | - Luis M Branco
- Zalgen Laboratories, LLC , Germantown , Maryland 20876 , United States
| | - Robert F Garry
- Department of Microbiology and Immunology , Tulane University , New Orleans , Louisiana 70112 , United States.,Zalgen Laboratories, LLC , Germantown , Maryland 20876 , United States
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9
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Chen Z, Liu S, Zhang S, Zhang Y, Yu J, Sun W, Chen L, Du Y, Wang J, Li Y, Wu J. Porcine Reproductive and Respiratory Syndrome Virus strains with Higher Virulence Cause Marked Protein Profile Changes in MARC-145 Cells. Sci Rep 2018; 8:15000. [PMID: 30302013 PMCID: PMC6177479 DOI: 10.1038/s41598-018-32984-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Accepted: 09/17/2018] [Indexed: 01/10/2023] Open
Abstract
Porcine reproductive and respiratory syndrome is an infectious disease that causes serious economic losses to the swine industry worldwide. To better understand the pathogenesis of the porcine reproductive and respiratory syndrome virus (PRRSV), three PRRSV strains with different molecular markers and virulence were used to infect MARC-145 cells. A total of 1804 proteins were identified, and 233 altered proteins and 72 signaling pathways involved in the proteomic profiling of virus-infected MARC-145 cells increased with the virulence of the PRRSV strain. The three types of viral strains shared a common pathway—the electron transport reaction in mitochondria—in the infected-MARC-145 cells. Moreover, the antisense pathway was the most variable of all significant signaling pathways for the highly virulent SX-1 strain, indicating that this unique pathway may be connected to the high virulence of the SX-1 strain. Our study is the first attempt to provide a proteome profile of MARC-145 cells infected with PRRSV strains with different virulence, and these findings will facilitate a deep understanding of the interactions between this virus and its host.
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Affiliation(s)
- Zhi Chen
- Shandong Key Lab of Animal Disease Control and Breeding, Shandong Academy of Agricultural Sciences, Jinan, 250100, China.,College of Life Sciences, Shandong Normal University, Jinan, 250014, China
| | - Shaoning Liu
- Shandong Institute of Veterinary Drug Quality Inspection, Jinan, 250022, China
| | - Shujin Zhang
- College of Agronomy, Liaocheng University, Liaocheng, 252000, China
| | - Yuyu Zhang
- Shandong Key Lab of Animal Disease Control and Breeding, Shandong Academy of Agricultural Sciences, Jinan, 250100, China.,College of Life Sciences, Shandong Normal University, Jinan, 250014, China
| | - Jiang Yu
- Shandong Key Lab of Animal Disease Control and Breeding, Shandong Academy of Agricultural Sciences, Jinan, 250100, China.,College of Life Sciences, Shandong Normal University, Jinan, 250014, China
| | - Wenbo Sun
- Shandong Key Lab of Animal Disease Control and Breeding, Shandong Academy of Agricultural Sciences, Jinan, 250100, China
| | - Lei Chen
- Shandong Key Lab of Animal Disease Control and Breeding, Shandong Academy of Agricultural Sciences, Jinan, 250100, China.,College of Life Sciences, Shandong Normal University, Jinan, 250014, China
| | - Yijun Du
- Shandong Key Lab of Animal Disease Control and Breeding, Shandong Academy of Agricultural Sciences, Jinan, 250100, China
| | - Jinbao Wang
- Shandong Key Lab of Animal Disease Control and Breeding, Shandong Academy of Agricultural Sciences, Jinan, 250100, China
| | - Yubao Li
- College of Agronomy, Liaocheng University, Liaocheng, 252000, China
| | - Jiaqiang Wu
- Shandong Key Lab of Animal Disease Control and Breeding, Shandong Academy of Agricultural Sciences, Jinan, 250100, China. .,College of Life Sciences, Shandong Normal University, Jinan, 250014, China.
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10
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Stewart H, Brown K, Dinan AM, Irigoyen N, Snijder EJ, Firth AE. Transcriptional and Translational Landscape of Equine Torovirus. J Virol 2018; 92:e00589-18. [PMID: 29950409 PMCID: PMC6096809 DOI: 10.1128/jvi.00589-18] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Accepted: 06/13/2018] [Indexed: 12/15/2022] Open
Abstract
The genus Torovirus (subfamily Torovirinae, family Coronaviridae, order Nidovirales) encompasses a range of species that infect domestic ungulates, including cattle, sheep, goats, pigs, and horses, causing an acute self-limiting gastroenteritis. Using the prototype species equine torovirus (EToV), we performed parallel RNA sequencing (RNA-seq) and ribosome profiling (Ribo-seq) to analyze the relative expression levels of the known torovirus proteins and transcripts, chimeric sequences produced via discontinuous RNA synthesis (a characteristic of the nidovirus replication cycle), and changes in host transcription and translation as a result of EToV infection. RNA sequencing confirmed that EToV utilizes a unique combination of discontinuous and nondiscontinuous RNA synthesis to produce its subgenomic RNAs (sgRNAs); indeed, we identified transcripts arising from both mechanisms that would result in sgRNAs encoding the nucleocapsid. Our ribosome profiling analysis revealed that ribosomes efficiently translate two novel CUG-initiated open reading frames (ORFs), located within the so-called 5' untranslated region. We have termed the resulting proteins U1 and U2. Comparative genomic analysis confirmed that these ORFs are conserved across all available torovirus sequences, and the inferred amino acid sequences are subject to purifying selection, indicating that U1 and U2 are functionally relevant. This study provides the first high-resolution analysis of transcription and translation in this neglected group of livestock pathogens.IMPORTANCE Toroviruses infect cattle, goats, pigs, and horses worldwide and can cause gastrointestinal disease. There is no treatment or vaccine, and their ability to spill over into humans has not been assessed. These viruses are related to important human pathogens, including severe acute respiratory syndrome (SARS) coronavirus, and they share some common features; however, the mechanism that they use to produce sgRNA molecules differs. Here, we performed deep sequencing to determine how equine torovirus produces sgRNAs. In doing so, we also identified two previously unknown open reading frames "hidden" within the genome. Together these results highlight the similarities and differences between this domestic animal virus and related pathogens of humans and livestock.
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Affiliation(s)
- Hazel Stewart
- Division of Virology, Department of Pathology, University of Cambridge, Cambridge, United Kingdom
| | - Katherine Brown
- Division of Virology, Department of Pathology, University of Cambridge, Cambridge, United Kingdom
| | - Adam M Dinan
- Division of Virology, Department of Pathology, University of Cambridge, Cambridge, United Kingdom
| | - Nerea Irigoyen
- Division of Virology, Department of Pathology, University of Cambridge, Cambridge, United Kingdom
| | - Eric J Snijder
- Molecular Virology Laboratory, Department of Medical Microbiology, Leiden University Medical Center, Leiden, The Netherlands
| | - Andrew E Firth
- Division of Virology, Department of Pathology, University of Cambridge, Cambridge, United Kingdom
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11
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Porcine reproductive and respiratory syndrome virus envelope (E) protein interacts with tubulin. Vet Microbiol 2017; 211:51-57. [DOI: 10.1016/j.vetmic.2017.10.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Revised: 10/01/2017] [Accepted: 10/02/2017] [Indexed: 01/25/2023]
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12
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Khandelwal N, Chander Y, Rawat KD, Riyesh T, Nishanth C, Sharma S, Jindal N, Tripathi BN, Barua S, Kumar N. Emetine inhibits replication of RNA and DNA viruses without generating drug-resistant virus variants. Antiviral Res 2017. [PMID: 28624461 DOI: 10.1016/j.antiviral.2017.06.006] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
At a noncytotoxic concentration, emetine was found to inhibit replication of DNA viruses [buffalopoxvirus (BPXV) and bovine herpesvirus 1 (BHV-1)] as well as RNA viruses [peste des petits ruminants virus (PPRV) and Newcastle disease virus (NDV)]. Using the time-of-addition and virus step-specific assays, we showed that emetine treatment resulted in reduced synthesis of viral RNA (PPRV and NDV) and DNA (BPXV and BHV-1) as well as inhibiting viral entry (NDV and BHV-1). In addition, emetine treatment also resulted in decreased synthesis of viral proteins. In a cell free endogenous viral polymerase assay, emetine was found to significantly inhibit replication of NDV, but not BPXV genome, suggesting that besides directly inhibiting specific viral polymerases, emetine may also target other factors essentially required for efficient replication of the viral genome. Moreover, emetine was found to significantly inhibit BPXV-induced pock lesions on chorioallantoic membrane (CAM) along with associated mortality of embryonated chicken eggs. At a lethal dose 50 (LD50) of 126.49 ng/egg and at an effective concentration 50 (EC50) of 3.03 ng/egg, the therapeutic index of the emetine against BPXV was determined to be 41.74. Emetine was also found to significantly delay NDV-induced mortality in chicken embryos associated with reduced viral titers. Further, emetine-resistant mutants were not observed upon long-term (P = 25) sequential passage of BPXV and NDV in cell culture. Collectively, we have extended the effective antiviral activity of emetine against diverse groups of DNA and RNA viruses and propose that emetine could provide significant therapeutic value against some of these viruses without inducing an antiviral drug-resistant phenotype.
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Affiliation(s)
- Nitin Khandelwal
- National Centre for Veterinary Type Cultures, ICAR-National Research Centre on Equines, Hisar, India
| | - Yogesh Chander
- National Centre for Veterinary Type Cultures, ICAR-National Research Centre on Equines, Hisar, India
| | - Krishan Dutt Rawat
- National Centre for Veterinary Type Cultures, ICAR-National Research Centre on Equines, Hisar, India
| | - Thachamvally Riyesh
- National Centre for Veterinary Type Cultures, ICAR-National Research Centre on Equines, Hisar, India
| | - Chikkahonnaiah Nishanth
- Department of Veterinary Public Health and Epidemiology, Lala Lajpat Rai University of Veterinary and Animal Sciences, Hisar, India
| | - Shalini Sharma
- Department of Veterinary Physiology and Biochemistry, Lala Lajpat Rai University of Veterinary and Animal Sciences, Hisar, India
| | - Naresh Jindal
- Department of Veterinary Public Health and Epidemiology, Lala Lajpat Rai University of Veterinary and Animal Sciences, Hisar, India
| | - Bhupendra N Tripathi
- National Centre for Veterinary Type Cultures, ICAR-National Research Centre on Equines, Hisar, India.
| | - Sanjay Barua
- National Centre for Veterinary Type Cultures, ICAR-National Research Centre on Equines, Hisar, India.
| | - Naveen Kumar
- National Centre for Veterinary Type Cultures, ICAR-National Research Centre on Equines, Hisar, India.
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Han J, Zhou L, Ge X, Guo X, Yang H. Pathogenesis and control of the Chinese highly pathogenic porcine reproductive and respiratory syndrome virus. Vet Microbiol 2017; 209:30-47. [PMID: 28292547 DOI: 10.1016/j.vetmic.2017.02.020] [Citation(s) in RCA: 90] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Revised: 02/22/2017] [Accepted: 02/27/2017] [Indexed: 12/24/2022]
Abstract
Porcine reproductive and respiratory syndrome virus (PRRSV) has remained a major threat to the worldwide swine industry ever since its first discovery in the early 1990s. Under the selective pressures in the field, this positive-stranded RNA virus undergoes rapid genetic evolution that eventually leads to emergence in 2006 of the devastating Chinese highly pathogenic PRRSV (HP-PRRSV). The atypical nature of HP-PRRSV has caused colossal economic losses to the swine producers in China and the surrounding countries. In this review, we summarize the recent advances in our understanding of the pathogenesis, evolution and ongoing field practices on the control of this troubling virus in China.
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Affiliation(s)
- Jun Han
- Key Laboratory of Animal Epidemiology and Zoonosis of Ministry of Agriculture, College of Veterinary Medicine and State Key Laboratory of Agrobiotechnology, China Agricultural University, Beijing, PR China
| | - Lei Zhou
- Key Laboratory of Animal Epidemiology and Zoonosis of Ministry of Agriculture, College of Veterinary Medicine and State Key Laboratory of Agrobiotechnology, China Agricultural University, Beijing, PR China
| | - Xinna Ge
- Key Laboratory of Animal Epidemiology and Zoonosis of Ministry of Agriculture, College of Veterinary Medicine and State Key Laboratory of Agrobiotechnology, China Agricultural University, Beijing, PR China
| | - Xin Guo
- Key Laboratory of Animal Epidemiology and Zoonosis of Ministry of Agriculture, College of Veterinary Medicine and State Key Laboratory of Agrobiotechnology, China Agricultural University, Beijing, PR China
| | - Hanchun Yang
- Key Laboratory of Animal Epidemiology and Zoonosis of Ministry of Agriculture, College of Veterinary Medicine and State Key Laboratory of Agrobiotechnology, China Agricultural University, Beijing, PR China.
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14
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Dong S, Liu L, Wu W, Armstrong SD, Xia D, Nan H, Hiscox JA, Chen H. Determination of the interactome of non-structural protein12 from highly pathogenic porcine reproductive and respiratory syndrome virus with host cellular proteins using high throughput proteomics and identification of HSP70 as a cellular factor for virus replication. J Proteomics 2016; 146:58-69. [DOI: 10.1016/j.jprot.2016.06.019] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2016] [Revised: 06/07/2016] [Accepted: 06/14/2016] [Indexed: 12/16/2022]
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15
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Generation of porcine reproductive and respiratory syndrome (PRRS) virus-like-particles (VLPs) with different protein composition. J Virol Methods 2016; 236:77-86. [PMID: 27435337 DOI: 10.1016/j.jviromet.2016.03.021] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2015] [Revised: 03/19/2016] [Accepted: 03/24/2016] [Indexed: 01/03/2023]
Abstract
The causative agent of Porcine Reproductive and Respiratory Syndrome (PRRS) is an enveloped ssRNA (+) virus belonging to the Arteriviridae family. Gp5 and M proteins form disulfide-linked heterodimers that constitute the major components of PRRSV envelope. Gp2, Gp3, Gp4 and E are the minor structural proteins, being the first three incorporated as multimeric complexes in the virus surface. The disease has become one of the most important causes of economic losses in the swine industry. Despite efforts to design an effective vaccine, the available ones allow only partial protection. In the last years, VLPs have become good vaccine alternatives because of safety issues and their potential to activate both branches of the immunological response. The characteristics of recombinant baculoviruses as heterologous expression system have been exploited for the production of VLPs of a wide variety of viruses. In this work, two multiple baculovirus expression vectors (BEVs) with PRRS virus envelope proteins were engineered in order to generate PRRS VLPs: on the one hand, Gp5 and M cDNAs were cloned to generate the pBAC-Gp5M vector; on the other hand, Gp2, Gp3, Gp4 and E cDNAs have been cloned to generate the pBAC-Gp234E vector. The corresponding recombinant baculoviruses BAC-Gp5M and BAC-Gp234E were employed to produce two types of VLPs: basic Gp5M VLPs, by the simultaneous expression of Gp5 and M proteins; and complete VLPs, by the co-expression of the six PRRS proteins after co-infection. The characterization of VLPs by Western blot confirmed the presence of the recombinant proteins using the available specific antibodies (Abs). The analysis by Electron microscopy showed that the two types of VLPs were indistinguishable between them, being similar in shape and size to the native PRRS virus. This system represents a potential alternative for vaccine development and a useful tool to study the implication of specific PRRS proteins in the response against the virus.
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16
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Dent SD, Xia D, Wastling JM, Neuman BW, Britton P, Maier HJ. The proteome of the infectious bronchitis virus Beau-R virion. J Gen Virol 2016; 96:3499-3506. [PMID: 27257648 DOI: 10.1099/jgv.0.000304] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Infectious bronchitis is a highly contagious respiratory disease of poultry caused by the coronavirus infectious bronchitis virus (IBV). It was thought that coronavirus virions were composed of three major viral structural proteins until investigations of other coronaviruses showed that the virions also include viral non-structural and genus-specific accessory proteins as well as host-cell proteins. To study the proteome of IBV virions, virus was grown in embryonated chicken eggs, purified by sucrose-gradient ultracentrifugation and analysed by mass spectrometry. Analysis of three preparations of purified IBV yielded the three expected structural proteins plus 35 additional virion-associated host proteins. The virion-associated host proteins had a diverse range of functional attributions, being involved in cytoskeleton formation, RNA binding and protein folding pathways. Some of these proteins were unique to this study, while others were found to be orthologous to proteins identified in severe acute respiratory syndrome coronavirus virions and also virions from a number of other RNA and DNA viruses.
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Affiliation(s)
- Stuart D Dent
- Compton Laboratory, Compton, The Pirbright Institute, Newbury RG20 7NN, UK.,School of Biological Sciences, University of Reading, Whiteknights, Reading RG6 6AJ, UK
| | - Dong Xia
- Institute of Infection and Global Health, University of Liverpool, Liverpool L3 5RF, UK
| | - Jonathan M Wastling
- Institute of Infection and Global Health, University of Liverpool, Liverpool L3 5RF, UK.,Faculty of Natural Sciences, University of Keele, Keele ST5 5BG, UK
| | - Benjamin W Neuman
- School of Biological Sciences, University of Reading, Whiteknights, Reading RG6 6AJ, UK
| | - Paul Britton
- Compton Laboratory, Compton, The Pirbright Institute, Newbury RG20 7NN, UK
| | - Helena J Maier
- Compton Laboratory, Compton, The Pirbright Institute, Newbury RG20 7NN, UK
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17
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Purification of porcine reproductive and respiratory syndrome virus using ultrafiltration and liquid chromatography. J Chromatogr B Analyt Technol Biomed Life Sci 2016; 1017-1018:182-186. [DOI: 10.1016/j.jchromb.2016.01.060] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2015] [Revised: 01/25/2016] [Accepted: 01/30/2016] [Indexed: 11/23/2022]
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18
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Abstract
Infectious bursal disease virus (IBDV) causes a highly contagious disease in young chickens and leads to significant economic loss in the poultry industry. The identification of host cellular molecules that bind to IBDV will improve the understanding of the underlying pathogenic mechanisms. In this study, using a virus overlay protein-binding assay (VOPBA) and mass spectrometry (MS) analysis, IBDV was found to bind chicken Anx2, a membrane protein fraction from DF-1 cells. Its interactions were further confirmed by an overlay assay. The results of an immunofluorescence assay and flow cytometry showed that Anx2 could be expressed and colocalized with IBDV on the surface of infected cells. Moreover, either the soluble recombinant Anx2 or an anti-Anx2 antibody could inhibit IBDV binding to and infection of DF-1 cells in a dose-dependent manner. The knockdown of Anx2 of DF-1 cells by small interfering RNA clearly reduced the subsequent virus yield, and overexpression of Anx2 was capable of enhancing the virus yield. These results indicate, for the first time, that binding to Anx2 is beneficial for IBDV infection.
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19
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Zheng K, Kitazato K, Wang Y, He Z. Pathogenic microbes manipulate cofilin activity to subvert actin cytoskeleton. Crit Rev Microbiol 2015; 42:677-95. [PMID: 25853495 DOI: 10.3109/1040841x.2015.1010139] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Actin-depolymerizing factor (ADF)/cofilin proteins are key players in controlling the temporal and spatial extent of actin dynamics, which is crucial for mediating host-pathogen interactions. Pathogenic microbes have evolved molecular mechanisms to manipulate cofilin activity to subvert the actin cytoskeletal system in host cells, promoting their internalization into the target cells, modifying the replication niche and facilitating their intracellular and intercellular dissemination. The study of how these pathogens exploit cofilin pathways is crucial for understanding infectious disease and providing potential targets for drug therapies.
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Affiliation(s)
- Kai Zheng
- a Department of Pharmacy, School of Medicine , Shenzhen University , Shenzhen , Guangdong , People's Republic of China .,c Guangzhou Jinan Biomedicine Research and Development Center, National Engineering Research Center of Genetic Medicine, Jinan University , Guangzhou , China
| | - Kaio Kitazato
- b Division of Molecular Pharmacology of Infectious Agents, Department of Molecular Microbiology and Immunology , Nagasaki University , Nagasaki , Japan , and
| | - Yifei Wang
- c Guangzhou Jinan Biomedicine Research and Development Center, National Engineering Research Center of Genetic Medicine, Jinan University , Guangzhou , China
| | - Zhendan He
- a Department of Pharmacy, School of Medicine , Shenzhen University , Shenzhen , Guangdong , People's Republic of China
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20
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Rascón-Castelo E, Burgara-Estrella A, Mateu E, Hernández J. Immunological features of the non-structural proteins of porcine reproductive and respiratory syndrome virus. Viruses 2015; 7:873-86. [PMID: 25719944 PMCID: PMC4379552 DOI: 10.3390/v7030873] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2014] [Revised: 02/08/2015] [Accepted: 02/15/2015] [Indexed: 12/18/2022] Open
Abstract
Porcine reproductive and respiratory syndrome virus (PRRSV) is currently one of the most important viruses affecting the swine industry worldwide. Despite the large number of papers published each year, the participation of non-structural proteins (nsps) in the immune response is not completely clear. nsps have been involved in the host innate immune response, specifically, nsp1α/β, nsp2, nsp4 and nsp11 have been associated with the immunomodulation capability of the virus. To date, only participation by nsp1, nsp2, nsp4 and nsp7 in the humoral immune response has been reported, with the role of other nsps being overlooked. Furthermore, nsp1, nsp2, nsp5, nsp7 nsp9, nsp10, nsp11 have been implicated in the induction of IFN-γ and probably in the development of the cell-mediated immune response. This review discusses recent reports involving the participation of nsps in the modulation of the innate immune response and their role in the induction of both the humoral and cellular immune responses.
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Affiliation(s)
- Edgar Rascón-Castelo
- Laboratorio de Inmunología, Centro de Investigación en Alimentación y Desarrollo A.C (CIAD) Carretera a la Victoria Km 0.6, C.P. 83304 Hermosillo, Sonora, Mexico.
| | - Alexel Burgara-Estrella
- Laboratorio de Inmunología, Centro de Investigación en Alimentación y Desarrollo A.C (CIAD) Carretera a la Victoria Km 0.6, C.P. 83304 Hermosillo, Sonora, Mexico.
| | - Enric Mateu
- Centre de Recerca en Sanitat Animal (CReSA), UAB-IRTA, Campus de la Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain.
- Departament de Sanitat i d'Anatomia Animals, Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain.
| | - Jesús Hernández
- Laboratorio de Inmunología, Centro de Investigación en Alimentación y Desarrollo A.C (CIAD) Carretera a la Victoria Km 0.6, C.P. 83304 Hermosillo, Sonora, Mexico.
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21
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Moerdyk-Schauwecker M, Hwang SI, Grdzelishvili VZ. Cellular proteins associated with the interior and exterior of vesicular stomatitis virus virions. PLoS One 2014; 9:e104688. [PMID: 25105980 PMCID: PMC4126742 DOI: 10.1371/journal.pone.0104688] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2014] [Accepted: 07/15/2014] [Indexed: 01/18/2023] Open
Abstract
Virus particles (virions) often contain not only virus-encoded but also host-encoded proteins. Some of these host proteins are enclosed within the virion structure, while others, in the case of enveloped viruses, are embedded in the host-derived membrane. While many of these host protein incorporations are likely accidental, some may play a role in virus infectivity, replication and/or immunoreactivity in the next host. Host protein incorporations may be especially important in therapeutic applications where large numbers of virus particles are administered. Vesicular stomatitis virus (VSV) is the prototypic rhabdovirus and a candidate vaccine, gene therapy and oncolytic vector. Using mass spectrometry, we previously examined cell type dependent host protein content of VSV virions using intact (“whole”) virions purified from three cell lines originating from different species. Here we aimed to determine the localization of host proteins within the VSV virions by analyzing: i) whole VSV virions; and ii) whole VSV virions treated with Proteinase K to remove all proteins outside the viral envelope. A total of 257 proteins were identified, with 181 identified in whole virions and 183 identified in Proteinase K treated virions. Most of these proteins have not been previously shown to be associated with VSV. Functional enrichment analysis indicated the most overrepresented categories were proteins associated with vesicles, vesicle-mediated transport and protein localization. Using western blotting, the presence of several host proteins, including some not previously shown in association with VSV (such as Yes1, Prl1 and Ddx3y), was confirmed and their relative quantities in various virion fractions determined. Our study provides a valuable inventory of virion-associated host proteins for further investigation of their roles in the replication cycle, pathogenesis and immunoreactivity of VSV.
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Affiliation(s)
- Megan Moerdyk-Schauwecker
- Department of Biological Sciences, University of North Carolina at Charlotte, Charlotte, North Carolina, United States of America
- Center for Biomedical Engineering and Science, University of North Carolina at Charlotte, Charlotte, North Carolina, United States of America
| | - Sun-Il Hwang
- Proteomics Laboratory for Clinical and Translational Research, Carolinas HealthCare System, Charlotte, North Carolina, United States of America
| | - Valery Z. Grdzelishvili
- Department of Biological Sciences, University of North Carolina at Charlotte, Charlotte, North Carolina, United States of America
- Center for Biomedical Engineering and Science, University of North Carolina at Charlotte, Charlotte, North Carolina, United States of America
- * E-mail:
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22
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Annexin V incorporated into influenza virus particles inhibits gamma interferon signaling and promotes viral replication. J Virol 2014; 88:11215-28. [PMID: 25031344 DOI: 10.1128/jvi.01405-14] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
UNLABELLED During the budding process, influenza A viruses (IAVs) incorporate multiple host cell membrane proteins. However, for most of them, their significance in viral morphogenesis and infectivity remains unknown. We demonstrate here that the expression of annexin V (A5) is upregulated at the cell surface upon IAV infection and that a substantial proportion of the protein is present in lipid rafts, the site of virus budding. Western blotting and immunogold analysis of highly purified IAV particles showed the presence of A5 in the virion. Significantly, gamma interferon (IFN-γ)-induced Stat phosphorylation and IFN-γ-induced 10-kDa protein (IP-10) production in macrophage-derived THP-1 cells was inhibited by purified IAV particles. Disruption of the IFN-γ signaling pathway was A5 dependent since downregulation of its expression or its blockage reversed the inhibition and resulted in decreased viral replication in vitro. The functional significance of these results was also observed in vivo. Thus, IAVs can subvert the IFN-γ antiviral immune response by incorporating A5 into their envelope during the budding process. IMPORTANCE Many enveloped viruses, including influenza A viruses, bud from the plasma membrane of their host cells and incorporate cellular surface proteins into viral particles. However, for the vast majority of these proteins, only the observation of their incorporation has been reported. We demonstrate here that the host protein annexin V is specifically incorporated into influenza virus particles during the budding process. Importantly, we showed that packaged annexin V counteracted the antiviral activity of gamma interferon in vitro and in vivo. Thus, these results showed that annexin V incorporated in the viral envelope of influenza viruses allow viral escape from immune surveillance. Understanding the role of host incorporated protein into virions may reveal how enveloped RNA viruses hijack the host cell machinery for their own purposes.
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Li J, Guo D, Huang L, Yin M, Liu Q, Wang Y, Yang C, Liu Y, Zhang L, Tian Z, Cai X, Yu L, Weng C. The interaction between host Annexin A2 and viral Nsp9 is beneficial for replication of porcine reproductive and respiratory syndrome virus. Virus Res 2014; 189:106-13. [PMID: 24874199 DOI: 10.1016/j.virusres.2014.05.015] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Revised: 05/06/2014] [Accepted: 05/07/2014] [Indexed: 02/05/2023]
Abstract
Non-structural protein 9 (Nsp9), a RNA-dependent RNA polymerase (RdRp) of the porcine reproductive and respiratory syndrome virus (PRRSV), is necessary for PRRSV replication. However, the binding partners of Nsp9 have not been identified. In this study, seven host proteins were identified as Nsp9-binding proteins using yeast two-hybrid (Y2H). Among of them, we confirmed the interaction of Nsp9 with Annexin A2 (ANXA2) using Y2H, Co-immunoprecipitation (Co-IP), GST pulldown and immunofluorescence assay (IFA). We found that only full-length ANXA2 could bind with Nsp9 in vitro and Nsp9 interacted with endogenous ANXA2 in PRRSV-infected MARC-145 cells. In addition, we found that the Nsp9-ANXA2 interaction was partially reduced by RNase A treatment. Furthermore, PRRSV growth was significantly hindered in ANXA2-knockdown MARC-145 cells. Taken together, these results indicate that Nsp9 binding partner ANXA2 is beneficial for PRRSV replication.
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Affiliation(s)
- Jiangnan Li
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute of Chinese Academy of Agricultural Sciences, 427 Maduan Street, Harbin 150001, Heilongjiang, China
| | - Dongwei Guo
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing 163319, Heilongjiang, China
| | - Li Huang
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute of Chinese Academy of Agricultural Sciences, 427 Maduan Street, Harbin 150001, Heilongjiang, China
| | - Manman Yin
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute of Chinese Academy of Agricultural Sciences, 427 Maduan Street, Harbin 150001, Heilongjiang, China
| | - Qingfang Liu
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute of Chinese Academy of Agricultural Sciences, 427 Maduan Street, Harbin 150001, Heilongjiang, China
| | - Yan Wang
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute of Chinese Academy of Agricultural Sciences, 427 Maduan Street, Harbin 150001, Heilongjiang, China
| | - Chunmei Yang
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute of Chinese Academy of Agricultural Sciences, 427 Maduan Street, Harbin 150001, Heilongjiang, China
| | - Yuanyuan Liu
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute of Chinese Academy of Agricultural Sciences, 427 Maduan Street, Harbin 150001, Heilongjiang, China
| | - Lijie Zhang
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute of Chinese Academy of Agricultural Sciences, 427 Maduan Street, Harbin 150001, Heilongjiang, China
| | - Zhijun Tian
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute of Chinese Academy of Agricultural Sciences, 427 Maduan Street, Harbin 150001, Heilongjiang, China
| | - Xuehui Cai
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute of Chinese Academy of Agricultural Sciences, 427 Maduan Street, Harbin 150001, Heilongjiang, China
| | - Liyun Yu
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing 163319, Heilongjiang, China
| | - Changjiang Weng
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute of Chinese Academy of Agricultural Sciences, 427 Maduan Street, Harbin 150001, Heilongjiang, China.
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24
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Wunschel D, Tulman E, Engelmann H, Clowers BH, Geary S, Robinson A, Liao X. Forensic proteomics of poxvirus production. Analyst 2013; 138:6385-97. [PMID: 23979794 DOI: 10.1039/c3an00711a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The field of microbial forensics has recently sought to develop methods to discern biological signatures to indicate production methods for biological agents. Viral agents have received less attention to date. Their obligate propagation in living cells makes purification from cellular material a challenge. This leads to potential carryover of protein-rich signatures of their production system. Here we have explored a proteomic analysis of vaccinia virus as a model poxvirus system in which to compare samples of virus propagated in different cell lines and subjected to different purification schemes. The proteomic data sets indicated viral, host cell and culture medium proteins. Several layers of data analysis were applied to build confidence in the peptide identification and capture information on the taxonomic utility of each. The analysis showed clear shifts in protein profiles with virus purification, with successive gradient purification steps showing different levels of viral protein enrichment. Peptides from cellular proteins, including those present in purified virus preparations, provided signatures which enabled discrimination of cell line substrates, including distinguishing between cells derived from different primate species. The ability to discern multiple aspects of viral production demonstrates the potential value of proteomic analysis as tool for microbial forensics.
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Affiliation(s)
- David Wunschel
- Chemical and Biological Signature Sciences Group, Pacific Northwest National Laboratory, Richland, Washington, USA.
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25
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Kordyukova LV, Serebryakova MV. Mass spectrometric approaches to study enveloped viruses: new possibilities for structural biology and prophylactic medicine. BIOCHEMISTRY (MOSCOW) 2013; 77:830-42. [PMID: 22860905 PMCID: PMC7087845 DOI: 10.1134/s0006297912080044] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
This review considers principles of the use of mass spectrometry for the study of biological macromolecules. Some examples of protein identification, virion proteomics, testing vaccine preparations, and strain surveillance are represented. Possibilities of structural characterization of viral proteins and their posttranslational modifications are shown. The authors’ studies by MALDI-MS on S-acylation of glycoproteins from various families of enveloped viruses and on oligomerization of the influenza virus hemagglutinin transmembrane domains are summarized.
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Affiliation(s)
- L V Kordyukova
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, 119991 Moscow, Russia.
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26
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Stegen C, Yakova Y, Henaff D, Nadjar J, Duron J, Lippé R. Analysis of virion-incorporated host proteins required for herpes simplex virus type 1 infection through a RNA interference screen. PLoS One 2013; 8:e53276. [PMID: 23301054 PMCID: PMC3536771 DOI: 10.1371/journal.pone.0053276] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2012] [Accepted: 11/27/2012] [Indexed: 12/17/2022] Open
Abstract
Viruses are strictly dependent on cells to propagate and many incorporate host proteins in their viral particles, but the significance of this incorporation is poorly understood. Recently, we performed the first comprehensive characterization of the mature herpes simplex virus type 1 (HSV-1) in which up to 49 distinct cellular proteins were identified by mass spectrometry. In the present study, we sought to identify if these cellular factors are relevant for the HSV-1 life cycle. To this end, we performed a small interfering RNA functional screen and found that 15 of these host proteins altered HSV-1 proliferation in cell culture, without any significant effect on cell viability. Moreover, the siRNA used had no negative consequences for Adenovirus type 5 propagation (with one exception) indicating that the modulation was specific for HSV-1 and not merely due to unhealthy cells. The positive host proteins include several Rab GTPases and other intracellular transport components as well as proteins involved in signal transduction, gene regulation and immunity. Remarkably, in most cases when virions were depleted for one of the above proteins, they replicated more poorly in subsequent infections in wild type cells. This highlights for the first time that both the cellular and virion-associated pools of many of these proteins actively contribute to viral propagation. Altogether, these findings underscore the power and biological relevance of combining proteomics and RNA interference to identify novel host-pathogen interactions.
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Affiliation(s)
- Camille Stegen
- Department of Pathology and Cell Biology, University of Montreal, Montreal, Quebec, Canada
| | - Yordanka Yakova
- Department of Pathology and Cell Biology, University of Montreal, Montreal, Quebec, Canada
| | - Daniel Henaff
- Department of Pathology and Cell Biology, University of Montreal, Montreal, Quebec, Canada
| | - Julien Nadjar
- Department of Pathology and Cell Biology, University of Montreal, Montreal, Quebec, Canada
| | - Johanne Duron
- Department of Pathology and Cell Biology, University of Montreal, Montreal, Quebec, Canada
| | - Roger Lippé
- Department of Pathology and Cell Biology, University of Montreal, Montreal, Quebec, Canada
- * E-mail:
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Jourdan SS, Osorio F, Hiscox JA. An interactome map of the nucleocapsid protein from a highly pathogenic North American porcine reproductive and respiratory syndrome virus strain generated using SILAC-based quantitative proteomics. Proteomics 2012; 12:1015-23. [PMID: 22522808 PMCID: PMC7167637 DOI: 10.1002/pmic.201100469] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Positive strand RNA viruses replicate in the cytoplasm of an infected cell and encode nucleocapsid proteins. These proteins function to promote encapsidation of the RNA genome and virus particle assembly as well as playing potential roles in viral RNA synthesis. Nucleocapsid proteins can also associate with cellular proteins and signaling cascades. The arterivirus nucleocapsid (N) protein is no exception and localizes to both the cytoplasm and the nucleolus in virus‐infected cells. This study generated an interactome map of the N protein from a highly virulent North American strain of porcine reproductive and respiratory syndrome virus (PRRSV). This is a major pathogen of swine resulting in significant morbidity and mortality. Crucial to the study was the use of SILAC coupled to affinity purification using GFP‐traps and LC‐MS/MS. This approach has not been applied before to the investigation of host/viral protein interactomes and this study revealed that the PRRSV N protein interacts with the host cell protein synthesis machinery especially at the level of translation initiation as well as with the RNA post‐transcriptional modification machinery. Applications of the dataset can include studies of virus/host interactions and the design of live attenuated recombinant vaccines.
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Affiliation(s)
- Stefanie S Jourdan
- Institute of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, UK
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28
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Genini S, Paternoster T, Costa A, Botti S, Luini MV, Caprera A, Giuffra E. Identification of serum proteomic biomarkers for early porcine reproductive and respiratory syndrome (PRRS) infection. Proteome Sci 2012; 10:48. [PMID: 22873815 PMCID: PMC3492009 DOI: 10.1186/1477-5956-10-48] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2012] [Accepted: 07/17/2012] [Indexed: 12/11/2022] Open
Abstract
UNLABELLED BACKGROUND Porcine reproductive and respiratory syndrome (PRRS) is one of the most significant swine diseases worldwide. Despite its relevance, serum biomarkers associated with early-onset viral infection, when clinical signs are not detectable and the disease is characterized by a weak anti-viral response and persistent infection, have not yet been identified. Surface-enhanced laser desorption ionization time of flight mass spectrometry (SELDI-TOF MS) is a reproducible, accurate, and simple method for the identification of biomarker proteins related to disease in serum. This work describes the SELDI-TOF MS analyses of sera of 60 PRRSV-positive and 60 PRRSV-negative, as measured by PCR, asymptomatic Large White piglets at weaning. Sera with comparable and low content of hemoglobin (< 4.52 μg/mL) were fractionated in 6 different fractions by anion-exchange chromatography and protein profiles in the mass range 1-200 kDa were obtained with the CM10, IMAC30, and H50 surfaces. RESULTS A total of 200 significant peaks (p < 0.05) were identified in the initial discovery phase of the study and 47 of them were confirmed in the validation phase. The majority of peaks (42) were up-regulated in PRRSV-positive piglets, while 5 were down-regulated. A panel of 14 discriminatory peaks identified in fraction 1 (pH = 9), on the surface CM10, and acquired at low focus mass provided a serum protein profile diagnostic pattern that enabled to discriminate between PRRSV-positive and -negative piglets with a sensitivity and specificity of 77% and 73%, respectively. CONCLUSIONS SELDI-TOF MS profiling of sera from PRRSV-positive and PRRSV-negative asymptomatic piglets provided a proteomic signature with large scale diagnostic potential for early identification of PRRSV infection in weaning piglets. Furthermore, SELDI-TOF protein markers represent a refined phenotype of PRRSV infection that might be useful for whole genome association studies.
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Affiliation(s)
- Sem Genini
- Parco Tecnologico Padano - CERSA, Via Einstein, 26900, Lodi, Italy.
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29
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Identification of porcine serum proteins modified in response to HP-PRRSV HuN4 infection by two-dimensional differential gel electrophoresis. Vet Microbiol 2012; 158:237-46. [DOI: 10.1016/j.vetmic.2012.01.021] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2011] [Revised: 01/13/2012] [Accepted: 01/19/2012] [Indexed: 11/23/2022]
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30
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de Almeida AM, Bendixen E. Pig proteomics: A review of a species in the crossroad between biomedical and food sciences. J Proteomics 2012; 75:4296-314. [DOI: 10.1016/j.jprot.2012.04.010] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2012] [Revised: 04/04/2012] [Accepted: 04/08/2012] [Indexed: 11/29/2022]
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31
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Ren X, Xue C, Kong Q, Zhang C, Bi Y, Cao Y. Proteomic analysis of purified Newcastle disease virus particles. Proteome Sci 2012; 10:32. [PMID: 22571704 PMCID: PMC3413529 DOI: 10.1186/1477-5956-10-32] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2011] [Accepted: 05/09/2012] [Indexed: 12/20/2022] Open
Abstract
Background Newcastle disease virus (NDV) is an enveloped RNA virus, bearing severe economic losses to the poultry industry worldwide. Previous virion proteomic studies have shown that enveloped viruses carry multiple host cellular proteins both internally and externally during their life cycle. To address whether it also occurred during NDV infection, we performed a comprehensive proteomic analysis of highly purified NDV La Sota strain particles. Results In addition to five viral structural proteins, we detected thirty cellular proteins associated with purified NDV La Sota particles. The identified cellular proteins comprised several functional categories, including cytoskeleton proteins, annexins, molecular chaperones, chromatin modifying proteins, enzymes-binding proteins, calcium-binding proteins and signal transduction-associated proteins. Among these, three host proteins have not been previously reported in virions of other virus families, including two signal transduction-associated proteins (syntenin and Ras small GTPase) and one tumor-associated protein (tumor protein D52). The presence of five selected cellular proteins (i.e., β-actin, tubulin, annexin A2, heat shock protein Hsp90 and ezrin) associated with the purified NDV particles was validated by Western blot or immunogold labeling assays. Conclusions The current study presented the first standard proteomic profile of NDV. The results demonstrated the incorporation of cellular proteins in NDV particles, which provides valuable information for elucidating viral infection and pathogenesis.
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Affiliation(s)
- Xiangpeng Ren
- School of Environmental Science and Public Health, Wenzhou Medical College, Wenzhou, 325035, Peoples Republic of China.,State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510006, Peoples Republic of China
| | - Chunyi Xue
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510006, Peoples Republic of China
| | - Qingming Kong
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510006, Peoples Republic of China
| | - Chengwen Zhang
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510006, Peoples Republic of China
| | - Yingzuo Bi
- College of Animal Science, South China Agricultural University, Guangzhou, 510642, Peoples Republic of China
| | - Yongchang Cao
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510006, Peoples Republic of China
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32
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Lu Q, Bai J, Zhang L, Liu J, Jiang Z, Michal JJ, He Q, Jiang P. Two-Dimensional Liquid Chromatography–Tandem Mass Spectrometry Coupled with Isobaric Tags for Relative and Absolute Quantification (iTRAQ) Labeling Approach Revealed First Proteome Profiles of Pulmonary Alveolar Macrophages Infected with Porcine Reproductive and Respiratory Syndrome Virus. J Proteome Res 2012; 11:2890-903. [DOI: 10.1021/pr201266z] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Qi Lu
- Key Laboratory
of Animal Diseases
Diagnostic and Immunology, Ministry of Agriculture, College of Veterinary
Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - Juan Bai
- Key Laboratory
of Animal Diseases
Diagnostic and Immunology, Ministry of Agriculture, College of Veterinary
Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - Lili Zhang
- Key Laboratory
of Animal Diseases
Diagnostic and Immunology, Ministry of Agriculture, College of Veterinary
Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - Jie Liu
- Key Laboratory
of Animal Diseases
Diagnostic and Immunology, Ministry of Agriculture, College of Veterinary
Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - Zhihua Jiang
- Department of Animal Sciences, Washington State University, Pullman, Washington 99164-6351,
United States
| | - Jennifer J. Michal
- Department of Animal Sciences, Washington State University, Pullman, Washington 99164-6351,
United States
| | - Qindong He
- Key Laboratory
of Animal Diseases
Diagnostic and Immunology, Ministry of Agriculture, College of Veterinary
Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - Ping Jiang
- Key Laboratory
of Animal Diseases
Diagnostic and Immunology, Ministry of Agriculture, College of Veterinary
Medicine, Nanjing Agricultural University, Nanjing 210095, China
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