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Research Progress on Glycoprotein 5 of Porcine Reproductive and Respiratory Syndrome Virus. Animals (Basel) 2023; 13:ani13050813. [PMID: 36899670 PMCID: PMC10000246 DOI: 10.3390/ani13050813] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 02/14/2023] [Accepted: 02/20/2023] [Indexed: 02/26/2023] Open
Abstract
Porcine reproductive and respiratory syndrome (PRRS) is an acute, febrile, and highly contagious disease caused by the porcine reproductive and respiratory syndrome virus (PRRSV). Glycoprotein 5 (GP5) is a glycosylated envelope protein encoded by the PRRSV ORF5, which has good immunogenicity and can induce the body to produce neutralizing antibodies. Therefore, study of GP5 protein is of great significance in the diagnosis, prevention, and control of PRRSV and the development of new vaccines. We reviewed GP5 protein genetic variation, immune function, interaction with viral protein and host proteins, induction of cell apoptosis, and stimulation of neutralizing antibodies. GP5 protein's influence on virus replication and virulence, as well as its use as a target for viral detection and immunization are reviewed.
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Ding Y, Luo L, Luo Y, Zhao D, Mi S, Yu X, Zheng J, Tu C, Yu X. A novel combined vaccine against classical swine fever and porcine epidemic diarrhea viruses elicits a significant Th2-favored humoral response in mice. Vaccine 2021; 39:4573-4576. [PMID: 34246494 DOI: 10.1016/j.vaccine.2021.06.084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2021] [Revised: 06/22/2021] [Accepted: 06/27/2021] [Indexed: 11/29/2022]
Abstract
Many Chinese breeding pigs are repeatedly vaccinated against classical swine fever virus (CSFV) and porcine epidemic diarrhea virus (PEDV), which cause fatal, highly contagious diseases. To reduce their high frequency vaccination-induced immune stress, we constructed a combined vaccine based on the E2 protein of CSFV and the S1 spike protein subunit of PEDV (named E2-S1). In mice, the E2-S1 vaccine elicited higher neutralizing antibody titers and IgG1/IgG2a ratios against CSFV and PEDV than those induced by individual E2 or S1 vaccines. Moreover, it elicited high IL-4 expression, but no IFN-γ expression. The results suggest that good compatibility exists between E2 and S1 antigens, and the E2-S1 vaccine can elicit a strong Th2-type cell-mediated humoral immune response. The E2-S1 recombinant fusion protein provides a novel vaccine candidate against both CSFV and PEDV, laying the foundation for future combination vaccines against swine diseases.
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Affiliation(s)
- Yanbin Ding
- Laboratory of Animal Disease Molecular and Immunology, College of Veterinary Medicine, Hunan Agricultural University, Changsha 410128, China
| | - Lingzhi Luo
- Laboratory of Animal Disease Molecular and Immunology, College of Veterinary Medicine, Hunan Agricultural University, Changsha 410128, China
| | - Ye Luo
- Laboratory of Animal Disease Molecular and Immunology, College of Veterinary Medicine, Hunan Agricultural University, Changsha 410128, China
| | - Dun Zhao
- Laboratory of Animal Disease Molecular and Immunology, College of Veterinary Medicine, Hunan Agricultural University, Changsha 410128, China
| | - Shijiang Mi
- Institute of Military Veterinary Medicine, Academy of Military Medical Sciences, Changchun 130122, China
| | - Xiaohang Yu
- Laboratory of Animal Disease Molecular and Immunology, College of Veterinary Medicine, Hunan Agricultural University, Changsha 410128, China
| | - Jin Zheng
- Laboratory of Animal Disease Molecular and Immunology, College of Veterinary Medicine, Hunan Agricultural University, Changsha 410128, China
| | - Changchun Tu
- Institute of Military Veterinary Medicine, Academy of Military Medical Sciences, Changchun 130122, China
| | - Xinglong Yu
- Laboratory of Animal Disease Molecular and Immunology, College of Veterinary Medicine, Hunan Agricultural University, Changsha 410128, China.
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Zhao Z, Chen X, Chen Y, Li H, Fang K, Chen H, Li X, Qian P. A Self-Assembling Ferritin Nanoplatform for Designing Classical Swine Fever Vaccine: Elicitation of Potent Neutralizing Antibody. Vaccines (Basel) 2021; 9:45. [PMID: 33451123 PMCID: PMC7828615 DOI: 10.3390/vaccines9010045] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 01/08/2021] [Accepted: 01/10/2021] [Indexed: 01/29/2023] Open
Abstract
Protein-based self-assembling nanoplatforms exhibit superior immunogenicity compared with soluble antigens. Here, we present a comprehensive vaccine strategy for displaying classical swine fever virus (CSFV) E2 glycoprotein on the surface of ferritin (fe) nanocages. An E2-specific blocking antibody assay showed that the blocking rates in pE2-fe/Gel02 (84.3%) and a half-dose cohort of E2-fe/Gel02 (81.9%) were significantly higher (p < 0.05) than that in a ferritin-free cohort of pE2/Gel02 (62.7%) at 21 days post immunization (dpi) in vivo. Furthermore, quantitation of neutralizing potency revealed that a highly significant difference (p < 0.001) was observed between the pE2-fe/Gel02 cohort (1:32, equivalent to live-attenuated strain C at 1:32) and the pE2/Gel02 cohort (1:4) at 21 dpi. Moreover, the innate immune cytokines of IL-4 and IFN-γ activated by the half-dose (20 μg) cohort of E2-fe/Gel02 were equivalent to those elicited by the full dose (40 μg) of purified E2 in the pE2/Gel02 cohort at most time points. In conclusion, we successfully obtained an antigen-displaying E2-ferritin nanoplatform and confirmed high ferritin-assisted humoral and cellular immunities. Our results provided a novel paradigm of self-assembling nanovaccine development for the defense and elimination of potentially pandemic infectious viral pathogens.
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Affiliation(s)
- Zekai Zhao
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China; (Z.Z.); (X.C.); (Y.C.); (H.L.); (K.F.); (H.C.); (X.L.)
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China
| | - Xinghua Chen
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China; (Z.Z.); (X.C.); (Y.C.); (H.L.); (K.F.); (H.C.); (X.L.)
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China
| | - Yibao Chen
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China; (Z.Z.); (X.C.); (Y.C.); (H.L.); (K.F.); (H.C.); (X.L.)
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China
| | - Hui Li
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China; (Z.Z.); (X.C.); (Y.C.); (H.L.); (K.F.); (H.C.); (X.L.)
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China
| | - Kui Fang
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China; (Z.Z.); (X.C.); (Y.C.); (H.L.); (K.F.); (H.C.); (X.L.)
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China
| | - Huanchun Chen
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China; (Z.Z.); (X.C.); (Y.C.); (H.L.); (K.F.); (H.C.); (X.L.)
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China
| | - Xiangmin Li
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China; (Z.Z.); (X.C.); (Y.C.); (H.L.); (K.F.); (H.C.); (X.L.)
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China
| | - Ping Qian
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China; (Z.Z.); (X.C.); (Y.C.); (H.L.); (K.F.); (H.C.); (X.L.)
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, China
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Abstract
Vaccination is essential in livestock farming and in companion animal ownership. Nucleic acid vaccines based on DNA or RNA provide an elegant alternative to those classical veterinary vaccines that have performed suboptimally. Recent advances in terms of rational design, safety, and efficacy have strengthened the position of nucleic acid vaccines in veterinary vaccinology. The present review focuses on replicon vaccines designed for veterinary use. Replicon vaccines are self-amplifying viral RNA sequences that, in addition to the sequence encoding the antigen of interest, contain all elements necessary for RNA replication. Vaccination results in high levels of in situ antigen expression and induction of potent immune responses. Both positive- and negative-stranded viruses have been used to construct replicons, and they can be delivered as RNA, DNA, or viral replicon particles. An introduction to the biology and the construction of different viral replicon vectors is given, and examples of veterinary replicon vaccine applications are discussed.
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Affiliation(s)
- Mia C Hikke
- Laboratory of Virology, Wageningen University, 6708 PB Wageningen, The Netherlands;
| | - Gorben P Pijlman
- Laboratory of Virology, Wageningen University, 6708 PB Wageningen, The Netherlands;
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Abstract
Mosquito-borne diseases affect horses worldwide. Mosquito-borne diseases generally cause encephalomyelitis in the horse and can be difficult to diagnose antemortem. In addition to general disease, and diagnostic and treatment aspects, this review article summarizes the latest information on these diseases, covering approximately the past 5 years, with a focus on new equine disease encroachments, diagnostic and vaccination aspects, and possible therapeutics on the horizon.
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Glycoprotein E2 of classical swine fever virus expressed by baculovirus induces the protective immune responses in rabbits. Vaccine 2014; 32:6607-13. [DOI: 10.1016/j.vaccine.2014.10.003] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2014] [Revised: 09/30/2014] [Accepted: 10/06/2014] [Indexed: 11/21/2022]
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Lin SY, Chung YC, Hu YC. Update on baculovirus as an expression and/or delivery vehicle for vaccine antigens. Expert Rev Vaccines 2014; 13:1501-21. [DOI: 10.1586/14760584.2014.951637] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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Chen CL, Wu JC, Chen GY, Yuan PH, Tseng YW, Li KC, Hwang SM, Hu YC. Baculovirus-mediated miRNA regulation to suppress hepatocellular carcinoma tumorigenicity and metastasis. Mol Ther 2014; 23:79-88. [PMID: 25023326 DOI: 10.1038/mt.2014.126] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2014] [Accepted: 07/03/2014] [Indexed: 01/12/2023] Open
Abstract
MicroRNA 122 (miR-122) is a tumor suppressor for hepatocellular carcinoma (HCC) but is lowly expressed in HCC cells. MiR-151 is aberrantly overexpressed in HCC cells and promotes HCC metastasis yet its roles on HCC tumorigenicity are unknown. To combat HCC tumorigenicity/metastasis, we developed Sleeping Beauty (SB)-based hybrid baculovirus (BV) vectors that expressed (i) miR-122 precursors (pre-miR-122), (ii) miR-151 sponges, or (iii) pre-miR-122 and miR-151 sponges. Transduction of aggressive HCC cells (Mahlavu) with the pre-miR-122-expressing BV tremendously enhanced miR-122 levels for >6 weeks, suppressed the levels of downstream effectors (e.g., ADAM10 and Bcl-w), proliferation, anchorage-independent growth, motility and migration/invasion in vitro. Intratumoral injection of the pre-miR-122-expressing BV attenuated the HCC growth/metastasis. The miR-151 sponges-expressing BV diminished the miR-151 levels for 6 weeks, enhanced RhoGDIA expression, suppressed RhoGTPases, as well as motility and migration/invasion of Mahlavu cells. Intratumoral injection of the miR-151 sponge-expressing BV impeded not only HCC metastasis but also cell proliferation, MMP expression and tumor growth in vivo. The BV co-expressing pre-miR-122 and miR-151 sponges also simultaneously enhanced miR-122 expression and inhibited miR-151, and conferred antitumor/anti-metastasis effects albeit lack of synergism. These data implicate the potentials of the SB-based hybrid BV for persistently modulating miRNA and suppressing HCC tumorigenicity/metastasis.
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Affiliation(s)
- Chiu-Ling Chen
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu, Taiwan
| | - Jaw-Ching Wu
- Department of Medical Research and Education, Taipei Veterans General Hospital, Institute of Clinical Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Guan-Yu Chen
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu, Taiwan
| | - Pei-Hsiang Yuan
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu, Taiwan
| | - Yen-Wen Tseng
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu, Taiwan
| | - Kuei-Chang Li
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu, Taiwan
| | - Shiaw-Min Hwang
- Bioresource Collection and Research Center, Food Industry Research and Development Institute, Hsinchu, Taiwan
| | - Yu-Chen Hu
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu, Taiwan
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Swine interferon-induced transmembrane protein, sIFITM3, inhibits foot-and-mouth disease virus infection in vitro and in vivo. Antiviral Res 2014; 109:22-9. [PMID: 24973762 PMCID: PMC7113896 DOI: 10.1016/j.antiviral.2014.06.008] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2014] [Revised: 05/22/2014] [Accepted: 06/16/2014] [Indexed: 11/22/2022]
Abstract
Swine IFITM3 (sIFITM3) shares the conserved functional domains and amino acid residues with its human ortholog. sIFITM3 restricts FMDV infection in BHK cells. sIFITM3 disrupts FMDV viral attachment to the host cell surface. sIFITM3 protects suckling mice from FMDV challenge.
The interferon-induced transmembrane protein 3 (IFITM3) is a widely expressed potent antiviral effector of the host innate immune system. It restricts a diverse group of pathogenic, enveloped viruses, by interfering with endosomal fusion. In this report, the swine IFITM3 (sIFITM3) gene was cloned. It shares the functionally conserved CD225 domain and multiple critical amino acid residues (Y19, F74, F77, R86 and Y98) with its human ortholog, which are essential for antiviral activity. Ectopic expression of sIFITM3 significantly inhibited non-enveloped foot-and-mouth disease virus (FMDV) infection in BHK-21 cells. Furthermore, sIFITM3 blocked FMDV infection at early steps in the virus life cycle by disrupting viral attachment to the host cell surface. Importantly, inoculation of 2-day-old suckling mice with a plasmid expressing sIFITM3 conferred protection against lethal challenge with FMDV. These results suggest that sIFITM3 is a promising antiviral agent and that can safeguard the host from infection with FMDV.
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Alphavirus-based vaccines. Viruses 2014; 6:2392-415. [PMID: 24937089 PMCID: PMC4074933 DOI: 10.3390/v6062392] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2014] [Revised: 06/03/2014] [Accepted: 06/04/2014] [Indexed: 12/18/2022] Open
Abstract
Alphavirus vectors have demonstrated high levels of transient heterologous gene expression both in vitro and in vivo and, therefore, possess attractive features for vaccine development. The most commonly used delivery vectors are based on three single-stranded encapsulated alphaviruses, namely Semliki Forest virus, Sindbis virus and Venezuelan equine encephalitis virus. Alphavirus vectors have been applied as replication-deficient recombinant viral particles and, more recently, as replication-proficient particles. Moreover, in vitro transcribed RNA, as well as layered DNA vectors have been applied for immunization. A large number of highly immunogenic viral structural proteins expressed from alphavirus vectors have elicited strong neutralizing antibody responses in multispecies animal models. Furthermore, immunization studies have demonstrated robust protection against challenges with lethal doses of virus in rodents and primates. Similarly, vaccination with alphavirus vectors expressing tumor antigens resulted in prophylactic protection against challenges with tumor-inducing cancerous cells. As certain alphaviruses, such as Chikungunya virus, have been associated with epidemics in animals and humans, attention has also been paid to the development of vaccines against alphaviruses themselves. Recent progress in alphavirus vector development and vaccine technology has allowed conducting clinical trials in humans.
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Wu Q, Yu F, Xu J, Li Y, Chen H, Xiao S, Fu ZF, Fang L. Rabies-virus-glycoprotein-pseudotyped recombinant baculovirus vaccine confers complete protection against lethal rabies virus challenge in a mouse model. Vet Microbiol 2014; 171:93-101. [DOI: 10.1016/j.vetmic.2014.03.037] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2013] [Revised: 03/23/2014] [Accepted: 03/25/2014] [Indexed: 11/28/2022]
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