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Xia T, Lu X, Kong D, Guo T, Gao Y, Xin L, Jiang Y, Wang X, Shan Z, Li J, Zhou H, Cui W, Qiao X, Tang L, Li Y, Wang L. Screening optimal DC-targeting peptide to enhance the immune efficacy of recombinant Lactobacillus expressing RHDV VP60. Virulence 2024; 15:2368080. [PMID: 38899573 PMCID: PMC11195490 DOI: 10.1080/21505594.2024.2368080] [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: 02/07/2024] [Accepted: 06/10/2024] [Indexed: 06/21/2024] Open
Abstract
Dendritic cells (DCs) present an ideal target for delivering immunogenic cargo due to their potent antigen-presenting capabilities. This targeting approach holds promise in vaccine development by enhancing the efficiency of antigen recognition and capture by DCs. To identify a high-affinity targeting peptide binding to rabbit DCs, rabbit monocyte-derived DCs (raMoDCs) were isolated and cultured, and a novel peptide, HS (HSLRHDYGYPGH), was identified using a phage-displayed peptide library. Alongside HS, two other DC-targeting peptides, KC1 and MY, previously validated in our laboratory, were employed to construct recombinant Lactgobacillus reuteri fusion-expressed rabbit hemorrhagic disease virus (RHDV) capsid protein VP60. These recombinant Lactobacillus strains were named HS-VP60/L. reuteri, KC1-VP60/L. reuteri, and MY-VP60/L. reuteri. The ability of these recombinant Lactobacillus to bind rabbit DCs was evaluated both in vivo and in vitro. Results demonstrated that the DC-targeting peptide KC1 significantly enhanced the capture efficiency of recombinant Lactobacillus by raMoDCs, promoted DC maturation, and increased cytokine secretion. Furthermore, oral administration of KC1-VP60/L. reuteri effectively induced SIgA and IgG production in rabbits, prolonged rabbit survival post-challenge, and reduced RHDV copies in organs. In summary, the DC-targeting peptide KC1 exhibited robust binding to raMoDCs, and recombinant Lactobacillus expressing KC1-VP60 protein antigens efficiently induced systemic and mucosal immune responses in rabbits, conferring protective efficacy against RHDV. This study offers valuable insights for the development of novel RHDV vaccines.
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Affiliation(s)
- Tian Xia
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Xiao Lu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Deming Kong
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Tiantian Guo
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Yueyi Gao
- Division of Viral Biologic Testing(I), China Institute of Veterinary Drug Control, Beijing, China
| | - Lingxiang Xin
- Division of Viral Biologic Testing(I), China Institute of Veterinary Drug Control, Beijing, China
| | - Yanping Jiang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
- China Ministry of Agriculture Key Laboratory of Animal Pathogen Biology, Northeastern Science Inspection Station, Harbin, China
| | - Xiaona Wang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
- China Ministry of Agriculture Key Laboratory of Animal Pathogen Biology, Northeastern Science Inspection Station, Harbin, China
| | - Zhifu Shan
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
- China Ministry of Agriculture Key Laboratory of Animal Pathogen Biology, Northeastern Science Inspection Station, Harbin, China
| | - Jiaxuan Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
- China Ministry of Agriculture Key Laboratory of Animal Pathogen Biology, Northeastern Science Inspection Station, Harbin, China
| | - Han Zhou
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
- China Ministry of Agriculture Key Laboratory of Animal Pathogen Biology, Northeastern Science Inspection Station, Harbin, China
| | - Wen Cui
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
- China Ministry of Agriculture Key Laboratory of Animal Pathogen Biology, Northeastern Science Inspection Station, Harbin, China
| | - Xinyuan Qiao
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
- China Ministry of Agriculture Key Laboratory of Animal Pathogen Biology, Northeastern Science Inspection Station, Harbin, China
| | - Lijie Tang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
- China Ministry of Agriculture Key Laboratory of Animal Pathogen Biology, Northeastern Science Inspection Station, Harbin, China
| | - Yijing Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
- China Ministry of Agriculture Key Laboratory of Animal Pathogen Biology, Northeastern Science Inspection Station, Harbin, China
| | - Li Wang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
- China Ministry of Agriculture Key Laboratory of Animal Pathogen Biology, Northeastern Science Inspection Station, Harbin, China
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2
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Abrantes J, Lopes AM. A Review on the Methods Used for the Detection and Diagnosis of Rabbit Hemorrhagic Disease Virus (RHDV). Microorganisms 2021; 9:972. [PMID: 33946292 PMCID: PMC8146303 DOI: 10.3390/microorganisms9050972] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Revised: 04/26/2021] [Accepted: 04/27/2021] [Indexed: 01/10/2023] Open
Abstract
Since the early 1980s, the European rabbit (Oryctolagus cuniculus) has been threatened by the rabbit hemorrhagic disease (RHD). The disease is caused by a lagovirus of the family Caliciviridae, the rabbit hemorrhagic disease virus (RHDV). The need for detection, identification and further characterization of RHDV led to the development of several diagnostic tests. Owing to the lack of an appropriate cell culture system for in vitro propagation of the virus, much of the methods involved in these tests contributed to our current knowledge on RHD and RHDV and to the development of vaccines to contain the disease. Here, we provide a comprehensive review of the RHDV diagnostic tests used since the first RHD outbreak and that include molecular, histological and serological techniques, ranging from simpler tests initially used, such as the hemagglutination test, to the more recent and sophisticated high-throughput sequencing, along with an overview of their potential and their limitations.
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Affiliation(s)
- Joana Abrantes
- CIBIO/InBio-UP, Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto, 4485-661 Vairão, Portugal;
- Departamento de Biologia, Faculdade de Ciências da Universidade do Porto, 4169-007 Porto, Portugal
| | - Ana M. Lopes
- CIBIO/InBio-UP, Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto, 4485-661 Vairão, Portugal;
- Instituto de Ciências Biomédicas Abel Salazar (ICBAS)/Unidade Multidisciplinar de Investigação Biomédica (UMIB), Universidade do Porto, 4050-313 Porto, Portugal
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3
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NF-κB and Keap1 Interaction Represses Nrf2-Mediated Antioxidant Response in Rabbit Hemorrhagic Disease Virus Infection. J Virol 2020; 94:JVI.00016-20. [PMID: 32161178 DOI: 10.1128/jvi.00016-20] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Accepted: 02/28/2020] [Indexed: 12/18/2022] Open
Abstract
The rabbit hemorrhagic disease virus (RHDV), which belongs to the family Caliciviridae and the genus Lagovirus, causes lethal fulminant hepatitis in rabbits. RHDV decreases the activity of antioxidant enzymes regulated by Nrf2 in the liver. Antioxidants are important for the maintenance of cellular integrity and cytoprotection. However, the mechanism underlying the regulation of the Nrf2-antioxidant response element (ARE) signaling pathway by RHDV remains unclear. Using isobaric tags for relative and absolute quantification (iTRAQ) technology, the current study demonstrated that RHDV inhibits the induction of ARE-regulated genes and increases the expression of the p50 subunit of the NF-κB transcription factor. We showed that RHDV replication causes a remarkable increase in reactive oxygen species (ROS), which is simultaneously accompanied by a significant decrease in Nrf2. It was found that nuclear translocation of Keap1 plays a key role in the nuclear export of Nrf2, leading to the inhibition of Nrf2 transcriptional activity. The p50 protein partners with Keap1 to form the Keap1-p50/p65 complex, which is involved in the nuclear translocation of Keap1. Moreover, upregulation of Nrf2 protein levels in liver cell nuclei by tert-butylhydroquinone (tBHQ) delayed rabbit deaths due to RHDV infection. Considered together, our findings suggest that RHDV inhibits the Nrf2-dependent antioxidant response via nuclear translocation of Keap1-NF-κB complex and nuclear export of Nrf2 and provide new insight into the importance of oxidative stress during RHDV infection.IMPORTANCE Recent studies have reported that rabbit hemorrhagic disease virus (RHDV) infection reduced Nrf2-related antioxidant function. However, the regulatory mechanisms underlying this process remain unclear. The current study showed that the NF-κB p50 subunit partners with Keap1 to form the Keap1-NF-κB complex, which plays a key role in the inhibition of Nrf2 transcriptional activity. More importantly, upregulated Nrf2 activity delayed the death of RHDV-infected rabbits, strongly indicating the importance of oxidative damage during RHDV infection. These findings may provide novel insights into the pathogenesis of RHDV.
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4
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Qi R, Miao Q, Zhu J, Tang J, Tang A, Wang X, Dong D, Guo H, Liu G. Construction and immunogenicity of novel bivalent virus-like particles bearing VP60 genes of classic RHDV(GI.1) and RHDV2(GI.2). Vet Microbiol 2019; 240:108529. [PMID: 31902498 DOI: 10.1016/j.vetmic.2019.108529] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 11/23/2019] [Accepted: 11/26/2019] [Indexed: 02/07/2023]
Abstract
Rabbit hemorrhagic disease (RHD) is an acute, inflammatory, septic, and devastating infectious disease caused by Rabbit hemorrhagic disease virus (RHDV), which poses a serious threat to the rabbit industry. RHDV2 (GI.2/RHDVb), a recently reported new variant could cause RHD in wild populations, but also RHDV-vaccinated rabbits. For now, both RHDV and RHDV2 are the main causes of RHD. To develop a new subunit vaccine that could protect rabbits against both classic RHDV and RHDV2 infections, we constructed a recombinant baculovirus (Bac-classic RHDV VP60-RHDV2 VP60) containing the VP60 genes of classic RHDV and RHDV2. Both VP60 genes were well expressed simultaneously in Spodoptera frugiperda cells (Sf9) after infection with the recombinant baculovirus. Transmission electron microscopy showed that the recombinant VP60 self-assembled into virus-like particles (VLPs). The antigenicity and immunogenicity of the bivalent VLPs vaccine were examined with animal experiments. Our results demonstrated that both the humoral and cellular immune responses were efficiently induced in rabbits by a subunit vaccine based on the recombinant baculovirus. In addition, all rabbits immunized with the bivalent VLPs vaccine survived after challenged with classic RHDV, and showed no clinical signs of RHD, whereas all the rabbits in the negative control group died from classic RHDV infection and showed typical clinical signs of RHD. In summary, our results indicated that the recombinant baculovirus carrying two VP60 genes is a candidate construct from which to develop a bivalent VLPs vaccine against both classic RHDV and RHDV2 infections.
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Affiliation(s)
- Ruibin Qi
- Innovation Team of Small Animal Infectious Disease, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, 200241, PR China
| | - Qiuhong Miao
- Innovation Team of Small Animal Infectious Disease, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, 200241, PR China; Laboratory of Virology, Wageningen University & Research, Wageningen, 6708 PB, the Netherlands
| | - Jie Zhu
- Innovation Team of Small Animal Infectious Disease, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, 200241, PR China
| | - Jingyu Tang
- Innovation Team of Small Animal Infectious Disease, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, 200241, PR China
| | - Aoxing Tang
- Innovation Team of Small Animal Infectious Disease, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, 200241, PR China
| | - Xiaoxue Wang
- Innovation Team of Small Animal Infectious Disease, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, 200241, PR China
| | - Dandan Dong
- Innovation Team of Small Animal Infectious Disease, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, 200241, PR China
| | - Hongyuan Guo
- Innovation Team of Small Animal Infectious Disease, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, 200241, PR China
| | - Guangqing Liu
- Innovation Team of Small Animal Infectious Disease, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, 200241, PR China.
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5
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Wang L, Xia T, Guo T, Ru Y, Jiang Y, Cui W, Zhou H, Qiao X, Tang L, Xu Y, Li Y. Recombinant Lactobacillus casei Expressing Capsid Protein VP60 can Serve as Vaccine Against Rabbit Hemorrhagic Disease Virus in Rabbits. Vaccines (Basel) 2019; 7:vaccines7040172. [PMID: 31684059 PMCID: PMC6963290 DOI: 10.3390/vaccines7040172] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 10/29/2019] [Accepted: 10/29/2019] [Indexed: 01/15/2023] Open
Abstract
Rabbit hemorrhagic disease virus (RHDV) is the causative agent of rabbit hemorrhagic disease (RHD). RHD, characterized by hemorrhaging, liver necrosis, and high morbidity and mortality in rabbits and hares, causes severe economic losses in the rabbit industry worldwide. Due to the lack of an efficient in-vitro propagation system for RHDV, the current vaccine is produced via chemical inactivation of crude RHDV preparation derived from the livers of infected rabbits. Inactivated vaccines are effective for controlling RHD, but the potential problems of biosafety and animal welfare have negative effects on the application of inactivated vaccines. In this study, an oral Lactobacillus casei (L. casei) vaccine was used as an antigen delivery system to express RHDV capsid protein VP60(VP1)-eGFP fusion protein. The expression of the recombinant protein was confirmed via western blotting and immunofluorescence (IFA). Our results indicate that oral administration of this probiotic vaccine can stimulate secretory immunoglobulin A (SIgA)-based mucosal and IgG-based humoral immune responses in rabbits. The immunized rabbits were completely protected against challenge with RHDV. Our findings indicate that the L. casei expression system is a new strategy for the development of a safe and efficient vaccine against RHDV.
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Affiliation(s)
- Li Wang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China.
| | - Tian Xia
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China.
| | - Tiantian Guo
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China.
| | - Yi Ru
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730000, China.
| | - Yanping Jiang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China.
| | - Wen Cui
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China.
| | - Han Zhou
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China.
| | - Xinyuan Qiao
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China.
| | - Lijie Tang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China.
| | - Yigang Xu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China.
- China Ministry of Agriculture Key Laboratory of Animal Pathogen Biology, Northeastern Science Inspection Station, Harbin 150030, China.
| | - Yijing Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China.
- China Ministry of Agriculture Key Laboratory of Animal Pathogen Biology, Northeastern Science Inspection Station, Harbin 150030, China.
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6
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Deng Z, Geng Y, Wang K, Yu Z, Yang PO, Yang Z, He C, Huang C, Yin L, He M, Tang L, Lai W. Adjuvant effects of interleukin-2 co-expression with VP60 in an oral vaccine delivered by attenuated Salmonella typhimurium against rabbit hemorrhagic disease. Vet Microbiol 2019; 230:49-55. [PMID: 30827404 DOI: 10.1016/j.vetmic.2019.01.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2018] [Revised: 01/06/2019] [Accepted: 01/07/2019] [Indexed: 01/15/2023]
Abstract
Rabbit hemorrhagic disease (RHD) is a highly contagious infection that has caused significant damage to the rabbit industry since 1984. Inactivated vaccines, the currently used prevention measures, are effective in controlling RHD. However, these vaccines are derived from the livers of infected rabbits, which constitutes a major concern in terms of animal welfare and safety. Administration of DNA vaccines in collaboration with appropriate adjuvants, in particular, cytokines, to strengthen the immune response presents a novel optimization strategy to generate more efficient vaccines. In this study, the adjuvant effect of interleukin (IL)-2 co-expression with the VP60 gene in a DNA vaccine was evaluated. In total, four groups of 60 RHD virus (RHDV)-free rabbits (30 days old) were orally or subcutaneously administered recombinant SL7207-pVAX1-IL2-VP60, SL7207-pVAX1-VP60, SL7207-pVAX1 bacteria or the commercial inactive vaccine, and the induced immunity evaluated by challenge with the RHDV(Y8504/China) strain on day 56. The Recombinant SL7207-pVAX1-IL2-VP60 induced a higher level of antibodies than the vaccine SL7207-pVAX1-VP60 and inactivated vaccines to a significant extent. The concentrations of interleukin (IL)-4 were markedly higher than those in groups immunized with the naked or inactive vaccine alone. Furthermore, the fusion gene vaccine provided higher protection (93.33%) after virus challenge relative to immunization with the single gene (SL7207-pVAX1-VP60). The collective results indicate that recombinant SL7207-pVAX1-IL-2-VP60 bacteria exert enhanced protective effects against RHDV and therefore present a strong candidate as a potential vaccine. Moreover, IL-2 enhanced both humoral and cellular responses, highlighting the utility of rabbit IL-2 as an effective adjuvant.
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Affiliation(s)
- Zhaobin Deng
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
| | - Yi Geng
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China.
| | - Kaiyu Wang
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
| | - Zehui Yu
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
| | - Ping Ou Yang
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
| | - Zexiao Yang
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
| | - Changliang He
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
| | - Chao Huang
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
| | - Lizi Yin
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
| | - Min He
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
| | - Li Tang
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
| | - Weimin Lai
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
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7
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Müller C, Ulrich R, Franzke K, Müller M, Köllner B. Crude extracts of recombinant baculovirus expressing rabbit hemorrhagic disease virus 2 VLPs from both insect and rabbit cells protect rabbits from rabbit hemorrhagic disease caused by RHDV2. Arch Virol 2018; 164:137-148. [PMID: 30291504 DOI: 10.1007/s00705-018-4032-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Accepted: 07/14/2018] [Indexed: 12/19/2022]
Abstract
Vaccines against viral pathogens are often composed of recombinant proteins expressed in different systems. Such proteins expressed by recombinant baculoviruses have been proven to be effective for vaccination. Especially, after codon usage optimization high amounts of recombinant viral proteins can be obtained which can assemble to virus like particles (VLPs) spontaneously. In this study we compared two different codon usages of RHDV2-VP1 to improve the expression of recombinant VP1 of RHDV2 by recombinant baculoviruses after infection of insect SF9 cells or transduction of mammalian RK13 cells in order to gain high protein yields. Also the influence on the auto-assembly of RHDV2-VP1 to VLPs was investigated. Finally, the immunogenic potential of such recombinant vaccines against RHDV2 to induce a protective immune response in rabbits against RHDV2 should be characterized. There was no influence of different codon usages on RHDV2-VP1 gene expression in the respective cell lines detected. However, in insect cell line SF9 higher rates of recombinant VP1 were measured in comparison to the transduction of mammalian cells RK13. Auto-assembly of RHDV2-VP1 to VLPs was observed in both cell systems by electron microscopy. Finally, both RHDV-VP1 VLPs derived from mammalian and insect cells were able to induce a protective humoral immune response in rabbits against RHDV2.
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Affiliation(s)
- Claudia Müller
- Institute of Molecular Virology and Cell Biology, Friedrich-Loeffler-Institute, Greifswald-Insel Riems, Germany
| | - Reiner Ulrich
- Department of Experimental Animal Facilities and Biorisk Management, Friedrich-Loeffler-Institute, Greifswald-Insel Riems, Germany
| | - Kati Franzke
- Institute of Infectology, Friedrich-Loeffler-Institute, Greifswald-Insel Riems, Germany
| | - Marcus Müller
- IDT Biologika (Riems), Greifswald-Insel Riems, Germany
| | - Bernd Köllner
- Institute of Immunology, Friedrich-Loeffler-Institute, Greifswald-Insel Riems, Germany.
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8
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Jiang Q, Yu Z, Liu JS, Kong DS, Guo DC, Quan CS, Li BT, Hu XL, Qu L. Recombinant canine adenovirus type 2 expressing rabbit hemorrhagic disease virus VP60 protein provided protection against RHD in rabbits. Vet Microbiol 2017; 213:15-20. [PMID: 29291998 DOI: 10.1016/j.vetmic.2017.11.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Revised: 11/06/2017] [Accepted: 11/06/2017] [Indexed: 02/07/2023]
Abstract
Rabbit hemorrhagic disease virus (RHDV) is responsible for rabbit hemorrhagic disease (RHD), which is an acute, lethal and highly contagious disease in both wild and domestic rabbits. Although current vaccines are highly effective for controlling RHD, they are derived from infected rabbit livers and their use is thus associated with safety and animal-welfare concerns. In this study, we generated a recombinant lentogenic canine adenovirus type 2 (CAV2) vector expressing the RHDV vp60 gene, named rCAV2-VP60. rCAV2-VP60 expressed VP60 protein in Madin-Darby canine kidney cells as demonstrated by western blot and immunofluorescence assay. Polymerase chain reaction confirmed that the vp60 gene was successfully inserted into rCAV2-VP60 and was still detectable after 20 passages, indicating its stable genetic character. We evaluated the feasibility of rCAV2-VP60 as a live-virus-vectored RHD vaccine in rabbits. rCAV2-VP60 significantly induced specific antibodies to RHDV and provided effective protection against RHDV lethal challenge. These results suggest that rCAV2 expressing RHDV VP60 could be a safe and efficient candidate vaccine against RHDV in rabbits.
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Affiliation(s)
- Qian Jiang
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute of Chinese Academy of Agricultural Sciences, No. 678 Haping Road, Xiangfang District, Harbin, Heilongjiang 150069, PR China
| | - Zuo Yu
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute of Chinese Academy of Agricultural Sciences, No. 678 Haping Road, Xiangfang District, Harbin, Heilongjiang 150069, PR China
| | - Jia-Sen Liu
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute of Chinese Academy of Agricultural Sciences, No. 678 Haping Road, Xiangfang District, Harbin, Heilongjiang 150069, PR China
| | - De-Sheng Kong
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute of Chinese Academy of Agricultural Sciences, No. 678 Haping Road, Xiangfang District, Harbin, Heilongjiang 150069, PR China
| | - Dong-Chun Guo
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute of Chinese Academy of Agricultural Sciences, No. 678 Haping Road, Xiangfang District, Harbin, Heilongjiang 150069, PR China
| | - Chuan-Song Quan
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute of Chinese Academy of Agricultural Sciences, No. 678 Haping Road, Xiangfang District, Harbin, Heilongjiang 150069, PR China
| | - Bo-Tao Li
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute of Chinese Academy of Agricultural Sciences, No. 678 Haping Road, Xiangfang District, Harbin, Heilongjiang 150069, PR China
| | - Xiao-Liang Hu
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute of Chinese Academy of Agricultural Sciences, No. 678 Haping Road, Xiangfang District, Harbin, Heilongjiang 150069, PR China
| | - Liandong Qu
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute of Chinese Academy of Agricultural Sciences, No. 678 Haping Road, Xiangfang District, Harbin, Heilongjiang 150069, PR China.
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9
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Zhu J, Miao Q, Tan Y, Guo H, Liu T, Wang B, Chen Z, Li C, Liu G. Inclusion of an Arg-Gly-Asp receptor-recognition motif into the capsid protein of rabbit hemorrhagic disease virus enables culture of the virus in vitro. J Biol Chem 2017; 292:8605-8615. [PMID: 28381555 DOI: 10.1074/jbc.m117.780924] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Revised: 03/31/2017] [Indexed: 12/30/2022] Open
Abstract
The fact that rabbit hemorrhagic disease virus (RHDV), an important member of the Caliciviridae family, cannot be propagated in vitro has greatly impeded the progress of investigations into the mechanisms of pathogenesis, translation, and replication of this and related viruses. In this study, we have successfully bypassed this obstacle by constructing a mutant RHDV (mRHDV) by using a reverse genetics technique. By changing two amino acids (S305R,N307D), we produced a specific receptor-recognition motif (Arg-Gly-Asp; called RGD) on the surface of the RHDV capsid protein. mRHDV was recognized by the intrinsic membrane receptor (integrin) of the RK-13 cells, which then gained entry and proliferated as well as imparted apparent cytopathic effects. After 20 passages, the titers of RHDV reached 1 × 104.3 50% tissue culture infectious dose (TCID50)/ml at 72 h. Furthermore, mRHDV-infected rabbits showed typical rabbit plague symptoms and died within 48-72 h. After immunization with inactivated mRHDV, the rabbits survived wild-type RHDV infection, indicating that mRHDV could be a candidate virus strain for producing a vaccine against RHDV infection. In summary, this study offers a novel strategy for overcoming the challenges of proliferating RHDV in vitro Because virus uptake via specific membrane receptors, several of which specifically bind to the RGD peptide motif, is a common feature of host cells, we believe that this the strategy could also be applied to other RNA viruses that currently lack suitable cell lines for propagation such as hepatitis E virus and norovirus.
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Affiliation(s)
- Jie Zhu
- From the Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China
| | - Qiuhong Miao
- From the Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China
| | - Yonggui Tan
- From the Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China
| | - Huimin Guo
- From the Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China
| | - Teng Liu
- From the Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China
| | - Binbin Wang
- From the Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China
| | - Zongyan Chen
- From the Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China
| | - Chuanfeng Li
- From the Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China
| | - Guangqing Liu
- From the Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China
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10
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Baghban R, Gargari SLM, Rajabibazl M, Nazarian S, Bakherad H. Camelid-derived heavy-chain nanobody againstClostridium botulinumneurotoxin E inPichia pastoris. Biotechnol Appl Biochem 2016; 63:200-5. [PMID: 24673401 DOI: 10.1002/bab.1226] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2013] [Accepted: 03/20/2014] [Indexed: 11/07/2022]
Affiliation(s)
- Roghayyeh Baghban
- Department of Biology, Faculty of Basic Sciences, Shahed University, Tehran-Qom Express Way, Tehran, Iran
| | | | - Masoumeh Rajabibazl
- Department of Clinical Biochemistry, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Shahram Nazarian
- Department of Biological Sciences, Faculty of Sciences, Imam Hosein University, Tehran, Iran
| | - Hamid Bakherad
- Department of Biology, Faculty of Basic Sciences, Shahed University, Tehran-Qom Express Way, Tehran, Iran
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11
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Secretion and assembly of calicivirus-like particles in high-cell-density yeast fermentations: strategies based on a recombinant non-specific BPTI-Kunitz-type protease inhibitor. Appl Microbiol Biotechnol 2014; 99:3875-86. [DOI: 10.1007/s00253-014-6171-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2014] [Revised: 10/14/2014] [Accepted: 10/15/2014] [Indexed: 10/24/2022]
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12
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Li ZX, Hu WD, Li BC, Li TY, Zhou XY, Zhang Z. Egg yolk IgY against RHDV capsid protein VP60 promotes rabbit defense against RHDV infection. Vet Immunol Immunopathol 2013; 157:97-104. [PMID: 24252247 DOI: 10.1016/j.vetimm.2013.10.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2013] [Revised: 09/26/2013] [Accepted: 10/08/2013] [Indexed: 01/14/2023]
Abstract
VP60 capsid protein is the major structural and immunogenicity protein of RHDV (Rabbit hemorrhagic disease virus, RHDV), and has been implicated as a main protein antigen in RHDV diagnosis and vaccine design. In this report, egg yolk antibody (IgY) against N-terminal of VP60 was evaluated and developed as a new strategy for RHDV therapy. Briefly, N-terminal of VP60 (∼250aa) fragment was cloned and inserted into pET28a expression vector, and then the resultant plasmid, pET28a/VP60-N, was transformed into E. coli BL21(DE3) for recombinant VP60-N protein (rVP60-N) expression. Next, the rVP60-N was purified by Ni(+)-affinity purification chromatography and identified by Western blotting with RHDV antiserum. After immunizing the chickens with rVP60-N, the anti-rVP60-N IgY was isolated, and the activity and specificity of the IgY antibody were analyzed by ELISA and Western blotting. In our results, the rVP60-N could be expressed in E. coli as soluble fraction, and the isolated anti-rVP60-N IgY demonstrated a high specificity and titer (1:22,000) against rVP60-N antigen. For further evaluation of the IgY efficacy in vivo, rabbits were grouped randomly and challenged with RHDV, and the results showed that anti-rVP60-N IgY could significantly protect rabbits from virus infection and promote the host survival after a sustained treatment with anti-rVP60-N IgY for 5 days. Taken together, our study demonstrates evidence that production of IgY against VP60 could be as a novel strategy for the RHDV therapy.
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Affiliation(s)
- Zai Xin Li
- Key Laboratory of Pharmaceutical Engineering Technology and Application, School of Chemical and Pharmaceutical Engineering, Sichuan University of Science and Engineering, Zigong 643000, China
| | - Wei Dong Hu
- Key Laboratory of Pharmaceutical Engineering Technology and Application, School of Chemical and Pharmaceutical Engineering, Sichuan University of Science and Engineering, Zigong 643000, China
| | - Bing Chao Li
- Key Laboratory of Pharmaceutical Engineering Technology and Application, School of Chemical and Pharmaceutical Engineering, Sichuan University of Science and Engineering, Zigong 643000, China
| | - Tian You Li
- Key Laboratory of Pharmaceutical Engineering Technology and Application, School of Chemical and Pharmaceutical Engineering, Sichuan University of Science and Engineering, Zigong 643000, China
| | - Xiao Yang Zhou
- Key Laboratory of Pharmaceutical Engineering Technology and Application, School of Chemical and Pharmaceutical Engineering, Sichuan University of Science and Engineering, Zigong 643000, China
| | - Zhi Zhang
- Key Laboratory of Pharmaceutical Engineering Technology and Application, School of Chemical and Pharmaceutical Engineering, Sichuan University of Science and Engineering, Zigong 643000, China.
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13
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Conformational and thermal stability improvements for the large-scale production of yeast-derived rabbit hemorrhagic disease virus-like particles as multipurpose vaccine. PLoS One 2013; 8:e56417. [PMID: 23460801 PMCID: PMC3584067 DOI: 10.1371/journal.pone.0056417] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2012] [Accepted: 01/08/2013] [Indexed: 01/15/2023] Open
Abstract
Recombinant virus-like particles (VLP) antigenically similar to rabbit hemorrhagic disease virus (RHDV) were recently expressed at high levels inside Pichia pastoris cells. Based on the potential of RHDV VLP as platform for diverse vaccination purposes we undertook the design, development and scale-up of a production process. Conformational and stability issues were addressed to improve process control and optimization. Analyses on the structure, morphology and antigenicity of these multimers were carried out at different pH values during cell disruption and purification by size-exclusion chromatography. Process steps and environmental stresses in which aggregation or conformational instability can be detected were included. These analyses revealed higher stability and recoveries of properly assembled high-purity capsids at acidic and neutral pH in phosphate buffer. The use of stabilizers during long-term storage in solution showed that sucrose, sorbitol, trehalose and glycerol acted as useful aggregation-reducing agents. The VLP emulsified in an oil-based adjuvant were subjected to accelerated thermal stress treatments. None to slight variations were detected in the stability of formulations and in the structure of recovered capsids. A comprehensive analysis on scale-up strategies was accomplished and a nine steps large-scale production process was established. VLP produced after chromatographic separation protected rabbits against a lethal challenge. The minimum protective dose was identified. Stabilized particles were ultimately assayed as carriers of a foreign viral epitope from another pathogen affecting a larger animal species. For that purpose, a linear protective B-cell epitope from Classical Swine Fever Virus (CSFV) E2 envelope protein was chemically coupled to RHDV VLP. Conjugates were able to present the E2 peptide fragment for immune recognition and significantly enhanced the peptide-specific antibody response in vaccinated pigs. Overall these results allowed establishing improved conditions regarding conformational stability and recovery of these multimers for their production at large-scale and potential use on different animal species or humans.
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14
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Yuan D, Qu L, Liu J, Guo D, Jiang Q, Lin H, Si C. DNA vaccination with a gene encoding VP60 elicited protective immunity against rabbit hemorrhagic disease virus. Vet Microbiol 2013; 164:1-8. [PMID: 23419819 DOI: 10.1016/j.vetmic.2013.01.021] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2012] [Revised: 01/05/2013] [Accepted: 01/22/2013] [Indexed: 12/29/2022]
Abstract
Rabbit hemorrhagic disease (RHD) is a contagious disease in adult rabbits, with high mortality, that occurs throughout the world. The VP60 protein has been implicated as main protein antigen in virus diagnosis and vaccine design. In this report, we describe the construction of a novel DNA vaccine (pcDNA-VP60) expressing the RHDV capsid protein (VP60), and the expression of the recombinant protein was identified through indirect immunofluorescence assay (IFA) and Western blot assay. VP60 protein self-assembled to form virus-like particles (VLPs) observed by electron microscopy were morphologically similar to native virions. For the evaluation of vaccine efficacy, rabbits were inoculated with PBS, pcDNA3.1((+)), pcDNA-VP60 or RHDV inactive vaccine. They were challenged with RHDV-TP isolate four weeks after last boost immunization. In all cases, the rabbits immunized with pcDNA-VP60 developed high level of RHDV-specific antibodies and cellular immune response. The rabbits injected with DNA vaccine were completely protected against RHDV challenge like commercial RHDV inactive vaccine, moreover, RHDV viral load was significantly reduced in the liver samples from immunized rabbits. The recombinant DNA vaccine may provide a novel strategy for the immunization of rabbits for the control of RHDV.
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Affiliation(s)
- Dongwei Yuan
- State Key Laboratory of Veterinary Biotechnology, Experimental Animal Research Center, Harbin Veterinary Research Institute of Chinese Academy of Agricultural Sciences, Harbin, PR China.
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15
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Virus-like particles and α-galactosylceramide form a self-adjuvanting composite particle that elicits anti-tumor responses. J Control Release 2012; 159:338-45. [PMID: 22386518 DOI: 10.1016/j.jconrel.2012.02.015] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2011] [Revised: 02/14/2012] [Accepted: 02/17/2012] [Indexed: 02/08/2023]
Abstract
Virus-like particles (VLP) are effective vehicles for delivery of heterologous antigen to antigen-presenting cells. However VLP alone are insufficiently stimulatory to generate the signals required to facilitate effective priming of naïve T cells. We show that the VLP derived from rabbit hemorrhagic disease virus can bind the galactose-containing adjuvant α-galactosylceramide to form a composite particle for co-delivery of antigen and adjuvant to the same antigen-presenting cell. Vaccination with VLP and α-galactosylceramide activated splenic iNKT cells to produce IFN-γ and IL-4, led to the generation of antigen-specific T cells that protected prophylactically against subcutaneous tumor challenge, and was more effective at generating anti-tumor immune responses than either component individually. These data demonstrate a novel method for immunopotentiating VLP to increase their efficacy in the generation of anti-tumor responses via the innate ligand recognition properties of calicivirus-derived nanoparticles.
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16
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Abrantes J, van der Loo W, Le Pendu J, Esteves PJ. Rabbit haemorrhagic disease (RHD) and rabbit haemorrhagic disease virus (RHDV): a review. Vet Res 2012; 43:12. [PMID: 22325049 PMCID: PMC3331820 DOI: 10.1186/1297-9716-43-12] [Citation(s) in RCA: 262] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2011] [Accepted: 02/10/2012] [Indexed: 02/06/2023] Open
Abstract
Rabbit haemorrhagic disease virus (RHDV) is a calicivirus of the genus Lagovirus that causes rabbit haemorrhagic disease (RHD) in adult European rabbits (Oryctolagus cuniculus). First described in China in 1984, the virus rapidly spread worldwide and is nowadays considered as endemic in several countries. In Australia and New Zealand where rabbits are pests, RHDV was purposely introduced for rabbit biocontrol. Factors that may have precipitated RHD emergence remain unclear, but non-pathogenic strains seem to pre-date the appearance of the pathogenic strains suggesting a key role for the comprehension of the virus origins. All pathogenic strains are classified within one single serotype, but two subtypes are recognised, RHDV and RHDVa. RHD causes high mortality in both domestic and wild adult animals, with individuals succumbing between 48-72 h post-infection. No other species has been reported to be fatally susceptible to RHD. The disease is characterised by acute necrotising hepatitis, but haemorrhages may also be found in other organs, in particular the lungs, heart, and kidneys due to disseminated intravascular coagulation. Resistance to the disease might be explained in part by genetically determined absence or weak expression of attachment factors, but humoral immunity is also important. Disease control in rabbitries relies mainly on vaccination and biosecurity measures. Such measures are difficult to be implemented in wild populations. More recent research has indicated that RHDV might be used as a molecular tool for therapeutic applications. Although the study of RHDV and RHD has been hampered by the lack of an appropriate cell culture system for the virus, several aspects of the replication, epizootology, epidemiology and evolution have been disclosed. This review provides a broad coverage and description of the current knowledge on the disease and the virus.
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Affiliation(s)
- Joana Abrantes
- CIBIO/UP, Centro de Investigacao em Biodiversidade e Recursos Geneticos/Universidade do Porto, Campus Agrario de Vairao, 4485-661 Vairao, Portugal
- INSERM, U892, Université de Nantes, 44007 Nantes, France
| | - Wessel van der Loo
- CIBIO/UP, Centro de Investigacao em Biodiversidade e Recursos Geneticos/Universidade do Porto, Campus Agrario de Vairao, 4485-661 Vairao, Portugal
| | | | - Pedro J Esteves
- CIBIO/UP, Centro de Investigacao em Biodiversidade e Recursos Geneticos/Universidade do Porto, Campus Agrario de Vairao, 4485-661 Vairao, Portugal
- CITS, Centro de Investigacao em Tecnologias de Saude, CESPU, Gandra, Portugal
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17
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Wang X, Qiu L, Hao H, Zhang W, Fu X, Zhang H, He S, Zhang S, Du E, Yang Z. Adenovirus-based oral vaccine for rabbit hemorrhagic disease. Vet Immunol Immunopathol 2011; 145:277-82. [PMID: 22154735 DOI: 10.1016/j.vetimm.2011.11.014] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2011] [Revised: 11/17/2011] [Accepted: 11/17/2011] [Indexed: 11/30/2022]
Abstract
Vaccine antigens for rabbit hemorrhagic disease virus (RHDV) are currently derived from inactivated RHDV obtained from the livers of experimentally infected rabbits or from several recombinant immunogens. However, the application of these vaccine antigens has been restricted because of biosecurity and immunity characteristics. In the current study, a recombinant adenovirus expressing the RHDV capsid protein (VP60) was constructed and the expression of the recombinant protein was identified through western blot analysis using RHDV-positive rabbit sera. Eighteen rabbits were immunized by injection, direct oral instillation, or using bait. They were challenged with RHDV isolate three weeks after boost immunization. In all cases, the rabbits immunized with the recombinant adenovirus developed RHDV-specific antibodies and cell immune response. The rabbits injected with the recombinant adenovirus were completely protected against RHDV challenge. The adenovirus expression system may provide a strategy for the immunization of rabbits, particularly for the control of RHDV in wild rabbits.
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Affiliation(s)
- Xinglong Wang
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100, China
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18
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Single dose adenovirus vectored vaccine induces a potent and long-lasting immune response against rabbit hemorrhagic disease virus after parenteral or mucosal administration. Vet Immunol Immunopathol 2011; 142:179-88. [PMID: 21621855 DOI: 10.1016/j.vetimm.2011.05.007] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2010] [Revised: 04/14/2011] [Accepted: 05/03/2011] [Indexed: 11/24/2022]
Abstract
Rabbit hemorrhagic disease virus (RHDV) is the etiological agent of a lethal and contagious disease of rabbits that remains as a serious problem worldwide. As this virus does not replicate in cell culture systems, the capsid protein gene has been expressed in heterologous hosts or inserted in replication-competent viruses in order to obtain non-conventional RHDV vaccines. However, due to technological or safety issues, current RHDV vaccines are still prepared from organs of infected rabbits. In this work, two human type 5 derived replication-defective adenoviruses encoding the rabbit hemorrhagic disease virus VP60 capsid protein were constructed. The recombinant protein was expressed as a multimer in mouse and rabbit cell lines at levels that ranged from approximately 120 to 160 mg/L of culture. Mice intravenously or subcutaneously inoculated with a single 10(8) gene transfer units (GTU) dose of the AdVP60 vector (designed for VP60 intracellular expression) seroconverted at days 7 and 14 post-immunization, respectively. This vector generated a stronger response than that obtained with a second vector (AdVP60sec) designed for VP60 secretion. Rabbits were then immunized by parenteral or mucosal routes with a single 10(9)GTU dose of the AdVP60 and the antibody response was evaluated using a competition ELISA specific for RHDV or RHDVa. Protective hemagglutination inhibition (HI) titers were also promptly detected and IgG antibodies corresponding with inhibition percentages over 85% persisted up to one year in all rabbits, independently of the immunization route employed. These levels were similar to those elicited with inactivated RHDV or with VP60 obtained from yeast or insect cells. IgA specific antibodies were only found in saliva of rabbits immunized by intranasal instillation. The feasibility of VP60 production and vaccination of rabbits with replication-defective adenoviral vectors was demonstrated.
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19
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Farnós O, Fernández E, Chiong M, Parra F, Joglar M, Méndez L, Rodríguez E, Moya G, Rodríguez D, Lleonart R, González EM, Alonso A, Alfonso P, Suárez M, Rodríguez MP, Toledo JR. Biochemical and structural characterization of RHDV capsid protein variants produced in Pichia pastoris: Advantages for immunization strategies and vaccine implementation. Antiviral Res 2009; 81:25-36. [DOI: 10.1016/j.antiviral.2008.08.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2008] [Revised: 08/25/2008] [Accepted: 08/28/2008] [Indexed: 11/30/2022]
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20
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Peacey M, Wilson S, Baird MA, Ward VK. Versatile RHDV virus-like particles: incorporation of antigens by genetic modification and chemical conjugation. Biotechnol Bioeng 2008; 98:968-77. [PMID: 17546687 DOI: 10.1002/bit.21518] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Virus-like particles have proved to be excellent molecular scaffolds, yet the individual characteristics and immune responses generated against each VLP requires the development of a wide range of capsids for use as vaccines, molecular delivery vessels, and nanoscale templates. Here we describe the development of Rabbit haemorrhagic disease virus (RHDV)-like particles as a rapidly versatile molecular workbench, overcoming limitations imposed by established genetic antigen incorporation procedures with chimeric VLP. Production of the RHDV capsid protein in a baculovirus system led to the self-assembly of VLP which were recovered at over 99% purity and manipulated both genetically and chemically. Fusion of small peptide sequences to RHDV VLP was well tolerated, forming chimeric capsids that enhanced the presentation of foreign peptide to hybridoma T helper cells 700-fold. Rapid and simple conjugation techniques employing the hetero-bifunctional chemical linker sulfo-SMCC enabled both small peptides and whole proteins to be conjugated to the surface of RHDV VLP, overcoming limitations imposed on VLP formation and yield experienced with chimeric VLP. Administration of VLP/ovalbumin conjugate provoked high titre ovalbumin-specific antibody in mice, demonstrating the immune stimulatory properties of the capsid were conferred to conjugated foreign antigen. VLP facilitated delivery of conjugated antigen to dendritic cells, eliciting proliferative responses in naïve TCR transgenic T helper cells that were at least 10-fold greater than ovalbumin antigen delivered alone.
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MESH Headings
- Acyltransferases/chemistry
- Animals
- Antibody Formation/immunology
- Antigen Presentation/immunology
- Antigens/chemistry
- Antigens/genetics
- Antigens/immunology
- Antigens, Bacterial/chemistry
- Capsid/chemistry
- Capsid/immunology
- Capsid/ultrastructure
- Dendritic Cells/immunology
- Epitopes, T-Lymphocyte/chemistry
- Epitopes, T-Lymphocyte/genetics
- Epitopes, T-Lymphocyte/immunology
- Green Fluorescent Proteins/chemistry
- Hemagglutinins/chemistry
- Hemagglutinins/genetics
- Hemagglutinins/immunology
- Hemorrhagic Disease Virus, Rabbit/chemistry
- Hemorrhagic Disease Virus, Rabbit/genetics
- Lymphocyte Activation/immunology
- Maleimides/chemistry
- Mice
- Mice, Inbred C57BL
- Mice, Transgenic
- Microscopy, Immunoelectron
- Peptide Fragments/chemistry
- Peptide Fragments/genetics
- Peptide Fragments/immunology
- Rabbits
- Recombinant Proteins/chemistry
- Recombinant Proteins/immunology
- T-Lymphocytes/immunology
- Vaccination
- Vaccines, Synthetic/biosynthesis
- Vaccines, Synthetic/chemistry
- Vaccines, Synthetic/immunology
- Viral Structural Proteins/chemistry
- Viral Structural Proteins/genetics
- Viral Structural Proteins/immunology
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Affiliation(s)
- Matthew Peacey
- Department of Microbiology & Immunology, School of Medical Sciences, University of Otago, P.O. Box 56, Dunedin, 9054, New Zealand
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21
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Pérez-Filgueira DM, Resino-Talaván P, Cubillos C, Angulo I, Barderas MG, Barcena J, Escribano JM. Development of a low-cost, insect larvae-derived recombinant subunit vaccine against RHDV. Virology 2007; 364:422-30. [PMID: 17434554 DOI: 10.1016/j.virol.2007.03.016] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2007] [Revised: 02/13/2007] [Accepted: 03/10/2007] [Indexed: 01/20/2023]
Abstract
Vaccine antigens against rabbit hemorrhagic disease virus (RHDV) are currently derived from inactivated RHDV obtained from livers of experimentally infected rabbits. Several RHDV-derived recombinant immunogens have been reported. However, their application in vaccines has been restricted due to their high production costs. In this paper, we describe the development of an inexpensive, safe, stable vaccine antigen for RHDV. A baculovirus expressing a recombinant RHDV capsid protein (VP60r) was used to infect Trichoplusia ni insect larvae. It reached an expression efficiency of 12.5% of total soluble protein, i.e. approximately 2 mg of VP60r per larva. Preservation of the antigenicity and immunogenicity of the VP60r was confirmed by immunological and immunization experiments. Lyophilized crude larvae extracts, containing VP60r, were stable, at room temperature, for at least 800 days. In all cases, rabbits immunized with a single dose of VP60r by the intramuscular route were protected against RHDV challenge. Doses used were as low as 2 microg of VP60r in the presence of adjuvant or 100 microg without one. Orally administered VP60r in the absence of an adjuvant gave no protection. The potential costs of an RHDV vaccine made using this technology would be reduced considerably compared with producing the same protein in insect cells maintained by fermentation. In conclusion, the larva expression system may provide a broad-based strategy for production of recombinant subunit antigens (insectigens) for human or animal medicines, especially when production costs restrain their use.
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MESH Headings
- Administration, Oral
- Animals
- Antibodies, Viral/biosynthesis
- Antigens, Viral/genetics
- Antigens, Viral/isolation & purification
- Baculoviridae/genetics
- Caliciviridae Infections/immunology
- Caliciviridae Infections/prevention & control
- Caliciviridae Infections/veterinary
- Costs and Cost Analysis
- Hemorrhagic Disease Virus, Rabbit/genetics
- Hemorrhagic Disease Virus, Rabbit/immunology
- Injections, Intramuscular
- Larva
- Moths
- Rabbits
- Vaccines, Subunit/administration & dosage
- Vaccines, Subunit/economics
- Vaccines, Subunit/genetics
- Vaccines, Subunit/isolation & purification
- Vaccines, Synthetic/administration & dosage
- Vaccines, Synthetic/economics
- Vaccines, Synthetic/genetics
- Vaccines, Synthetic/isolation & purification
- Viral Structural Proteins/genetics
- Viral Structural Proteins/immunology
- Viral Structural Proteins/isolation & purification
- Viral Vaccines/administration & dosage
- Viral Vaccines/economics
- Viral Vaccines/genetics
- Viral Vaccines/isolation & purification
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22
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Farnós O, Rodríguez D, Valdés O, Chiong M, Parra F, Toledo JR, Fernández E, Lleonart R, Suárez M. Molecular and antigenic characterization of rabbit hemorrhagic disease virus isolated in Cuba indicates a distinct antigenic subtype. Arch Virol 2007; 152:1215-21. [PMID: 17334949 DOI: 10.1007/s00705-006-0926-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2006] [Accepted: 12/13/2006] [Indexed: 10/23/2022]
Abstract
Phylogenetic analyses conducted on isolates of rabbit hemorrhagic disease virus (RHDV) from throughout the world have shown well-defined genogroups comprising representative strains of the virus and antigenic variants. In this work, we have isolated and characterized RHDV from the major epizootic that occurred in Cuba in 2004-2005. Sequence analysis of the capsid protein gene and antigenic characterization of this strain has allowed its inclusion as a member of the distinct RHDVa subtype. We also found that specific antibodies directed against RHDV reference strains bound to the Cuban isolate in a competition ELISA and inhibited virus hemagglutination in vitro. This is the second report on the molecular characterization of RHDVa circulating in the American region.
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Affiliation(s)
- O Farnós
- Animal Biotechnology Division, Center for Genetic Engineering and Biotechnology, Havana, Cuba.
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23
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Angulo E, Bárcena J. Towards a unique and transmissible vaccine against myxomatosis and rabbit haemorrhagic disease for rabbit populations. WILDLIFE RESEARCH 2007. [DOI: 10.1071/wr06160] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Currently available vaccines against myxomatosis and rabbit hemorrhagic disease virus (RHDV) are not suited to immunise wild rabbit populations, as vaccines need to be delivered individually by conventional veterinary practices. As an alternative approach, research in Spain has focused on the development of a transmissible vaccine. A recombinant virus has been constructed based on a naturally attenuated myxoma virus (MV) field strain, expressing the RHDV capsid protein (VP60). Following inoculation of rabbits, the recombinant virus (MV-VP60) induced specific antibody responses against MV and RHDV, conferring protection against lethal challenges with both viruses. Furthermore, the recombinant MV-VP60 virus showed a limited horizontal transmission capacity, either by direct contact or in a flea-mediated process, promoting immunisation of contact uninoculated animals. Efficacy and safety of the vaccine have been extensively evaluated under laboratory conditions and in a limited field trial. The development of the transmissible vaccine strategy and the steps being taken to obtain the marketing authorisation for the vaccine in the European Union are presented in this review.
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24
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Rescued virus from infectious cDNA clone of rabbit hemorrhagic disease virus is adapted to RK13 cells line. ACTA ACUST UNITED AC 2006. [DOI: 10.1007/s11434-006-2044-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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