1
|
Chen Y, Yu Q, Fan W, Zeng X, Zhang Z, Tian G, Liu C, Bao H, Wu L, Zhang Y, Liu Y, Wang S, Cui H, Duan Y, Chen H, Gao Y. Recombinant Marek's disease virus type 1 provides full protection against H9N2 influenza A virus in chickens. Vet Microbiol 2024; 298:110242. [PMID: 39243669 DOI: 10.1016/j.vetmic.2024.110242] [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: 07/08/2024] [Revised: 08/20/2024] [Accepted: 08/28/2024] [Indexed: 09/09/2024]
Abstract
The H9N2 subtype of the avian influenza virus (AIV) poses a significant threat to the poultry industry and human health. Recombinant vaccines are the preferred method of controlling H9N2 AIV, and Marek's disease virus (MDV) is the ideal vector for recombinant vaccines. During this study, we constructed two recombinant MDV type 1 strains that carry the hemagglutinin (HA) gene of AIV to provide dual protection against both AIV and MDV. To assess the effects of different MDV insertion sites on the protective efficacy of H9N2 AIV, the HA gene of H9N2 AIV was inserted in UL41 and US2 of the MDV type 1 vector backbone to obtain recombinant viruses rMDV-UL41/HA and rMDV-US2/HA, respectively. An indirect immunofluorescence assay showed sustained expression of HA protein in both recombinant viruses. Additionally, the insertion of the HA gene in UL41 and US2 did not affect MDV replication in cell cultures. After immunization of specific pathogen-free chickens, although both the rMDV-UL41/HA and rMDV-US2/HA groups exhibited similar levels of hemagglutination inhibition antibody titers, only the rMDV-UL41/HA group provided complete protection against the H9N2 AIV challenge, and also offered complete protection against challenge with MDV. These results demonstrated that rMDV-UL41/HA could be used as a promising bivalent vaccine strain against both H9N2 avian influenza and Marek's disease in chickens.
Collapse
Affiliation(s)
- Yuntong Chen
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, PR China
| | - Qingqing Yu
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, PR China
| | - Wenrui Fan
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, PR China
| | - Xianying Zeng
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, PR China
| | - Zibo Zhang
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, PR China
| | - Guobin Tian
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, PR China
| | - Changjun Liu
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, PR China
| | - Hongmei Bao
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, PR China
| | - Longbo Wu
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, PR China
| | - Yanping Zhang
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, PR China
| | - Yongzhen Liu
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, PR China
| | - Suyan Wang
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, PR China
| | - Hongyu Cui
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, PR China
| | - Yulu Duan
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, PR China
| | - Hualan Chen
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, PR China.
| | - Yulong Gao
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, The Chinese Academy of Agricultural Sciences, Harbin, PR China.
| |
Collapse
|
2
|
Wu S, Wang M, Yang X, Zhao L, Lan Z, Sun S. Research Progress in the Development of Vaccines against Mycoplasma gallisepticum and Mycoplasma synoviae. Microorganisms 2024; 12:1699. [PMID: 39203540 PMCID: PMC11356929 DOI: 10.3390/microorganisms12081699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2024] [Revised: 08/13/2024] [Accepted: 08/15/2024] [Indexed: 09/03/2024] Open
Abstract
Mycoplasma gallisepticum (MG) and Mycoplasma synoviae (MS) are the primary agents responsible for mycoplasma disease in poultry. MG has been identified as a significant cause of chronic respiratory disease in chickens, while MS has been linked to the development of tenosynovitis, joint swelling and other symptoms in chickens, leading to considerable economic losses for the poultry industry. Unfortunately, there is no specific drug for treatment and vaccination is the most important way to control the disease. There are some different types of vaccines, including live vaccines, inactivated vaccines, sub-unit vaccines and vector vaccines. This paper provides a comprehensive review of the development of vaccines for MG and MS.
Collapse
Affiliation(s)
- Shaopeng Wu
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Tai’an 271018, China;
| | - Miaoli Wang
- Shandong Provincial Center for Animal Disease Control, Jinan 250010, China; (M.W.); (X.Y.); (L.Z.)
| | - Xiaoxue Yang
- Shandong Provincial Center for Animal Disease Control, Jinan 250010, China; (M.W.); (X.Y.); (L.Z.)
| | - Lu Zhao
- Shandong Provincial Center for Animal Disease Control, Jinan 250010, China; (M.W.); (X.Y.); (L.Z.)
| | - Zouran Lan
- Shandong Provincial Center for Animal Disease Control, Jinan 250010, China; (M.W.); (X.Y.); (L.Z.)
| | - Shuhong Sun
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Tai’an 271018, China;
| |
Collapse
|
3
|
Wang H, Tian J, Zhao J, Zhao Y, Yang H, Zhang G. Current Status of Poultry Recombinant Virus Vector Vaccine Development. Vaccines (Basel) 2024; 12:630. [PMID: 38932359 PMCID: PMC11209050 DOI: 10.3390/vaccines12060630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2024] [Revised: 05/22/2024] [Accepted: 06/03/2024] [Indexed: 06/28/2024] Open
Abstract
Inactivated and live attenuated vaccines are the mainstays of preventing viral poultry diseases. However, the development of recombinant DNA technology in recent years has enabled the generation of recombinant virus vector vaccines, which have the advantages of preventing multiple diseases simultaneously and simplifying the vaccination schedule. More importantly, some can induce a protective immune response in the presence of maternal antibodies and offer long-term immune protection. These advantages compensate for the shortcomings of traditional vaccines. This review describes the construction and characterization of primarily poultry vaccine vectors, including fowl poxvirus (FPV), fowl adenovirus (FAdV), Newcastle disease virus (NDV), Marek's disease virus (MDV), and herpesvirus of turkey (HVT). In addition, the pathogens targeted and the immunoprotective effect of different poultry recombinant virus vector vaccines are also presented. Finally, this review discusses the challenges in developing vector vaccines and proposes strategies for improving immune efficacy.
Collapse
Affiliation(s)
- Haoran Wang
- National Key Laboratory of Veterinary Public Health Security, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China; (H.W.); (J.T.); (J.Z.); (Y.Z.); (H.Y.)
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - Jiaxin Tian
- National Key Laboratory of Veterinary Public Health Security, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China; (H.W.); (J.T.); (J.Z.); (Y.Z.); (H.Y.)
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - Jing Zhao
- National Key Laboratory of Veterinary Public Health Security, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China; (H.W.); (J.T.); (J.Z.); (Y.Z.); (H.Y.)
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - Ye Zhao
- National Key Laboratory of Veterinary Public Health Security, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China; (H.W.); (J.T.); (J.Z.); (Y.Z.); (H.Y.)
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - Huiming Yang
- National Key Laboratory of Veterinary Public Health Security, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China; (H.W.); (J.T.); (J.Z.); (Y.Z.); (H.Y.)
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - Guozhong Zhang
- National Key Laboratory of Veterinary Public Health Security, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China; (H.W.); (J.T.); (J.Z.); (Y.Z.); (H.Y.)
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| |
Collapse
|
4
|
Shi B, Yang G, Xiao Y, Qian K, Shao H, Xu M, Qin A. Long-Term Protection against Virulent Newcastle Disease Virus (NDV) in Chickens Immunized with a Single Dose of Recombinant Turkey Herpesvirus Expressing NDV F Protein. Vaccines (Basel) 2024; 12:604. [PMID: 38932333 PMCID: PMC11209589 DOI: 10.3390/vaccines12060604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2024] [Revised: 05/17/2024] [Accepted: 05/30/2024] [Indexed: 06/28/2024] Open
Abstract
Newcastle disease (ND) is a significant infectious disease in poultry, causing substantial economic losses in developing countries. To control ND, chickens must be vaccinated multiple times a year. In order to develop an improved vaccine that provides long-term protection, the F gene from genotype VII NDV was inserted into the herpesvirus of turkey (HVT) vaccine virus using CRISPR/Cas9-mediated NHEJ repair and Cre/LoxP technology. The immunogenicity and protective efficacy of the resulting recombinant vaccines were evaluated through antibody assays and virus challenge experiments. Two recombinant vaccines, rHVT-005/006-F and rHVT-US2-F, were generated, both exhibiting growth rates comparable with those of HVT in vitro and consistently expressing the F protein. One-day-old specific pathogen-free (SPF) chickens immunized with 2000 PFU/bird of either rHVT-005/006-F or rHVT-US2-F developed robust humoral immunity and were completely protected against challenge with the NDV F48E8 strain at 4 weeks post-vaccination (wpv). Furthermore, a single dose of these vaccines provided sustained protection for at least 52 wpv. Our study identifies rHVT-005/006-F and rHVT-US2-F as promising ND vaccine candidates, offering long-term protection with a single administration. Moreover, HVT-005/006 demonstrates promise for accommodating additional foreign genes, facilitating the construction of multiplex vaccines.
Collapse
Affiliation(s)
- Bin Shi
- Ministry of Education Key Laboratory for Avian Preventive Medicine, Yangzhou University, No.12 East Wenhui Road, Yangzhou 225009, China
| | - Guifu Yang
- Ministry of Education Key Laboratory for Avian Preventive Medicine, Yangzhou University, No.12 East Wenhui Road, Yangzhou 225009, China
| | - Yue Xiao
- Ministry of Education Key Laboratory for Avian Preventive Medicine, Yangzhou University, No.12 East Wenhui Road, Yangzhou 225009, China
| | - Kun Qian
- Ministry of Education Key Laboratory for Avian Preventive Medicine, Yangzhou University, No.12 East Wenhui Road, Yangzhou 225009, China
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, No.12 East Wenhui Road, Yangzhou 225009, China
| | - Hongxia Shao
- Ministry of Education Key Laboratory for Avian Preventive Medicine, Yangzhou University, No.12 East Wenhui Road, Yangzhou 225009, China
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, No.12 East Wenhui Road, Yangzhou 225009, China
| | - Moru Xu
- Ministry of Education Key Laboratory for Avian Preventive Medicine, Yangzhou University, No.12 East Wenhui Road, Yangzhou 225009, China
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, No.12 East Wenhui Road, Yangzhou 225009, China
| | - Aijian Qin
- Ministry of Education Key Laboratory for Avian Preventive Medicine, Yangzhou University, No.12 East Wenhui Road, Yangzhou 225009, China
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, No.12 East Wenhui Road, Yangzhou 225009, China
| |
Collapse
|
5
|
Zhang JF, Shang K, Kim SW, Park JY, Wei B, Jang HK, Kang M, Cha SY. Simultaneous construction strategy using two types of fluorescent markers for HVT vector vaccine against infectious bursal disease and H9N2 avian influenza virus by NHEJ-CRISPR/Cas9. Front Vet Sci 2024; 11:1385958. [PMID: 38812565 PMCID: PMC11135205 DOI: 10.3389/fvets.2024.1385958] [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: 02/14/2024] [Accepted: 04/23/2024] [Indexed: 05/31/2024] Open
Abstract
Recently, herpesvirus of turkeys (HVT), which was initially employed as a vaccine against Marek's disease (MD), has been shown to be a highly effective viral vector for producing recombinant vaccines that can simultaneously express the protective antigens of multiple poultry diseases. Prior to the development of commercial HVT-vectored dual-insert vaccines, the majority of HVT-vectored vaccines in use only contained a single foreign gene and were often generated using time-consuming and inefficient traditional recombination methods. The development of multivalent HVT-vectored vaccines that induce simultaneous protection against several avian diseases is of great value. In particular, efficacy interference between individual recombinant HVT vaccines can be avoided. Herein, we demonstrated the use of CRISPR/Cas9 gene editing technology for the insertion of an IBDV (G2d) VP2 expression cassette into the UL45/46 region of the recombinant rHVT-HA viral genome to generate the dual insert rHVT-VP2-HA recombinant vaccine. The efficacy of this recombinant virus was also evaluated in specific pathogen-free (SPF) chickens. PCR and sequencing results showed that the recombinant virus rHVT-VP2-HA was successfully constructed. Vaccination with rHVT-VP2-HA produced high levels of specific antibodies against IBDV (G2d) and H9N2/Y280. rHVT-VP2-HA can provide 100% protection against challenges with IBDV (G2d) and H9N2/Y280. These results demonstrate that rHVT-VP2-HA is a safe and highly efficacious vaccine for the simultaneous control of IBDV (G2d) and H9N2/Y280.
Collapse
Affiliation(s)
- Jun-Feng Zhang
- College of Medical Technology and Engineering, Henan University of Science and Technology, Luoyang, China
- Department of Avian Diseases, College of Veterinary Medicine and Center for Avian Disease, Jeonbuk National University, Iksan, Republic of Korea
| | - Ke Shang
- Department of Avian Diseases, College of Veterinary Medicine and Center for Avian Disease, Jeonbuk National University, Iksan, Republic of Korea
- College of Animal Science and Technology, Luoyang Key Laboratory of Live Carrier Biomaterial and Animal Disease Prevention and Control, Henan University of Science and Technology, Luoyang, China
| | - Sang-Won Kim
- Department of Avian Diseases, College of Veterinary Medicine and Center for Avian Disease, Jeonbuk National University, Iksan, Republic of Korea
| | - Jong-Yeol Park
- Department of Avian Diseases, College of Veterinary Medicine and Center for Avian Disease, Jeonbuk National University, Iksan, Republic of Korea
| | - Bai Wei
- Department of Avian Diseases, College of Veterinary Medicine and Center for Avian Disease, Jeonbuk National University, Iksan, Republic of Korea
| | - Hyung-Kwan Jang
- Department of Avian Diseases, College of Veterinary Medicine and Center for Avian Disease, Jeonbuk National University, Iksan, Republic of Korea
- Bio Disease Control (BIOD) Co., Ltd., Iksan, Republic of Korea
| | - Min Kang
- Department of Avian Diseases, College of Veterinary Medicine and Center for Avian Disease, Jeonbuk National University, Iksan, Republic of Korea
- Bio Disease Control (BIOD) Co., Ltd., Iksan, Republic of Korea
| | - Se-Yeoun Cha
- Department of Avian Diseases, College of Veterinary Medicine and Center for Avian Disease, Jeonbuk National University, Iksan, Republic of Korea
| |
Collapse
|
6
|
Gewaily MS, El-Khyat F, Tahoon AE, Al-Rasheed M, Abdo SE, Gado A, Elmasry M, Ismail MM. Cytokines, Serological, and Histopathological Assessment of Recombinant Vaccination Strategies for Combatting Infectious Bursal Disease in Broiler Chickens. Vaccines (Basel) 2023; 12:27. [PMID: 38250840 PMCID: PMC10818727 DOI: 10.3390/vaccines12010027] [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: 11/20/2023] [Revised: 12/13/2023] [Accepted: 12/20/2023] [Indexed: 01/23/2024] Open
Abstract
Infectious bursal disease (IBD) represents a greatly transmissible viral disease found worldwide, causing significant health and production challenges in young chickens. The aim of this research was to assess the immune reaction induced by different vaccines targeting IBD. These vaccines included recombinant (Vac1; HVT-IBD vector), immune complex (Vac2; Bursa-Plex®), and intermediate plus (Vac3; Bursine plus) IBD vaccines. Our assessment relied on serological and histopathological analyses, as well as the pattern of immune-related cytokine expression in the bursal tissue. The vaccinated groups, along with a control positive (CP) group, were subjected to a vvIBDV challenge on their 28th day of life, while the control negative (CN) group received a mock vaccination with PBS. Our study revealed that Vac1 resulted in the most favorable growth performance, as well as maintained normal liver and kidney function, mitigating the impact of IBDV infection. Serological analysis using VP2 ELISA kits indicated that Vac1 induced the strongest immunological response among all vaccines. Histopathological examination demonstrated that Vac1 caused minimal lymphoid depletion observed in the lymphoid organs, followed by Vac2. Analysis of cytokine expression profiles showed significant upregulation in all vaccinated groups, particularly Vac1, during the pre-challenge period. Following IBDV infection, Vac1 resulted in a noteworthy increase in the expression of IL2 and IFN-γ, Vac2 showed a significant upregulation in TNF-α and granzyme, and both Vac1 and Vac3 exhibited increased levels of IL1β and IL10. In conclusion, our study suggests that the various vaccines triggered immune responses against IBD through both humoral and cell-mediated immunity. However, recombinant followed by immune complex vaccines appeared to induce more robust immunity while also being safer for broiler chickens in contrast to the intermediate plus vaccine.
Collapse
Affiliation(s)
- Mahmoud S. Gewaily
- Department of Anatomy and Embryology, Faculty of Veterinary Medicine, Kafrelsheikh University, Kafrelsheikh 33516, Egypt
| | - Fares El-Khyat
- Department of Poultry and Rabbit Diseases, Faculty of Veterinary Medicine, Kafrelsheikh University, Kafrelsheikh 33516, Egypt (M.M.I.)
| | - Abd Elnaby Tahoon
- Animal Health Research Institute, Kafrelsheikh Branch, Kafrelsheikh 33511, Egypt
| | - Mohammed Al-Rasheed
- Department Clinical Sciences, College of Veterinary Medicine, Avian Research Center, King Faisal University, P.O. Box 400, Al-Ahsa 31982, Saudi Arabia;
| | - Safaa E. Abdo
- Department of Animal Wealth Development, Faculty of Veterinary Medicine, Kafrelsheikh University, Kafrelsheikh 33516, Egypt
| | - Ahmed Gado
- Department of Poultry and Fish Diseases, Faculty of Veterinary Medicine, Damanhour University, Damanhour 22511, Egypt
| | - Mohamed Elmasry
- Agricultural Research Center, Animal Production Research Institute, Animal Production Research Station, Sakha, Kafrelsheikh 33511, Egypt
| | - Mahmoud M. Ismail
- Department of Poultry and Rabbit Diseases, Faculty of Veterinary Medicine, Kafrelsheikh University, Kafrelsheikh 33516, Egypt (M.M.I.)
| |
Collapse
|
7
|
Chen YQ, Su GM, Zhang JH, Li B, Ma KX, Zhang X, Huang LH, Liao M, Qi WB. HVT-vectored H7 vaccine protects chickens from lethal infection with the highly pathogenic H7N9 Avian influenza virus. Vet Microbiol 2023; 285:109852. [PMID: 37683421 DOI: 10.1016/j.vetmic.2023.109852] [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: 05/13/2023] [Revised: 08/13/2023] [Accepted: 08/16/2023] [Indexed: 09/10/2023]
Abstract
Since mid-2016, the highly pathogenic H7N9 subtype avian influenza virus (AIV) has threatened both public health and the poultry industry. Although a vaccination strategy has been deemed imperative to manage the virus, the most commonly used inactivated vaccines today are susceptible to interference from maternal antibodies and associated with an over-reliance on humoral immunity. In response, we developed a recombination vaccine with the herpesvirus of turkeys (HVT) as the vector to squeeze HPAI H7N9 and assessed its protective efficiency in immunized chickens. By inserting an enhanced green fluorescent protein (EGFP) expression cassette (i.e., MCMV+EGFP+SV40 polyA) into the HVT065 and HVT066 positions, we obtained the recombinant HVT expressing EGFP (i.e., rHVT-EGFP). Electroporation and EGFP tags improved the efficiency of transfection compared with transfection using expression plasmids without any fluorescent labeling and traditional liposomes. Using limiting dilution analysis and ultrasonic cell disruption techniques, we screened and purified a cell-bound herpes virus based on rHVT-EGFP and consequently constructed a recombinant HVT expressing the hemagglutinin (HA) of H7N9 (i.e., rHVT-H7HA), which was able to proliferate similarly to the parental strain, stably pass for at least 15 generations in vitro, and replicate stably in multiple organs in vivo. After chickens were immunized with rHVT-H7HA, the average antibody titers reached up to 3 log2 at 35 d post-vaccination and remained stable. Those results suggest that rHVT-H7HA can protect chickens against H7N9 with a dose-independent immune protection rate of 90% and significantly reduce the lung virus titer 4 d post-challenge.
Collapse
Affiliation(s)
- Yi-Qun Chen
- State Key Laboratory for Animal Disease Control and Prevention, South China Agricultural University, Guangzhou 510642, China; National Avian Influenza Para-Reference Laboratory, Guangzhou 510642, China; Key Laboratory of Zoonoses, Ministry of Agriculture and Rural Affairs, Guangzhou 510642, China; National and Regional Joint Engineering Laboratory for Medicament of Zoonoses Prevention and Control, Guangzhou 510642, China
| | - Guan-Ming Su
- National Avian Influenza Para-Reference Laboratory, Guangzhou 510642, China
| | - Jia-Hao Zhang
- National Avian Influenza Para-Reference Laboratory, Guangzhou 510642, China
| | - Bo Li
- National Avian Influenza Para-Reference Laboratory, Guangzhou 510642, China
| | - Kai-Xiong Ma
- National Avian Influenza Para-Reference Laboratory, Guangzhou 510642, China
| | - Xu Zhang
- National Avian Influenza Para-Reference Laboratory, Guangzhou 510642, China
| | - Li-Hong Huang
- State Key Laboratory for Animal Disease Control and Prevention, South China Agricultural University, Guangzhou 510642, China; National Avian Influenza Para-Reference Laboratory, Guangzhou 510642, China; Key Laboratory of Zoonoses, Ministry of Agriculture and Rural Affairs, Guangzhou 510642, China; National and Regional Joint Engineering Laboratory for Medicament of Zoonoses Prevention and Control, Guangzhou 510642, China
| | - Ming Liao
- National Avian Influenza Para-Reference Laboratory, Guangzhou 510642, China; Key Laboratory of Zoonoses, Ministry of Agriculture and Rural Affairs, Guangzhou 510642, China; National and Regional Joint Engineering Laboratory for Medicament of Zoonoses Prevention and Control, Guangzhou 510642, China; Key Laboratory of Zoonoses Prevention and Control of Guangdong Province, Guangzhou 510642, China.
| | - Wen-Bao Qi
- State Key Laboratory for Animal Disease Control and Prevention, South China Agricultural University, Guangzhou 510642, China; National Avian Influenza Para-Reference Laboratory, Guangzhou 510642, China; Key Laboratory of Zoonoses, Ministry of Agriculture and Rural Affairs, Guangzhou 510642, China; National and Regional Joint Engineering Laboratory for Medicament of Zoonoses Prevention and Control, Guangzhou 510642, China; Key Laboratory of Zoonoses Prevention and Control of Guangdong Province, Guangzhou 510642, China.
| |
Collapse
|
8
|
Abstract
The different technology platforms used to make poultry vaccines are reviewed. Vaccines based on classical technologies are either live attenuated or inactivated vaccines. Genetic engineering is applied to design by deletion, mutation, insertion, or chimerization, genetically modified target microorganisms that are used either as live or inactivated vaccines. Other vaccine platforms are based on one or a few genes of the target pathogen agent coding for proteins that can induce a protective immune response ("protective genes"). These genes can be expressed in vitro to produce subunit vaccines. Alternatively, vectors carrying these genes in their genome or nucleic acid-based vaccines will induce protection by in vivo expression of these genes in the vaccinated host. Properties of these different types of vaccines, including advantages and limitations, are reviewed, focusing mainly on vaccines targeting viral diseases and on technologies that succeeded in market authorization.
Collapse
|
9
|
Leng M, Bian X, Chen Y, Liang Z, Lian J, Chen M, Chen F, Wang Z, Lin W. The attenuated live vaccine strain W2512 provides protection against novel variant infectious bursal disease virus. Arch Virol 2023; 168:200. [PMID: 37402042 DOI: 10.1007/s00705-023-05828-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Accepted: 05/31/2023] [Indexed: 07/05/2023]
Abstract
Infectious bursal disease virus (IBDV) causes an acute and highly contagious infectious disease characterized by severe immunosuppression, causing great economic losses to the poultry industry globally. Over the past 30 years, this disease has been well controlled through vaccination and strict biosafety measures. However, novel variant IBDV strains have emerged in recent years, posing a new threat to the poultry industry. Our previous epidemiological survey showed that few novel variant IBDV strains had been isolated from chickens immunized with the attenuated live vaccine W2512-, suggesting that this vaccine is efficacious against novel variant strains. Here, we report the protective effect of the W2512 vaccine against novel variant strains in SPF chickens and commercial yellow-feathered broilers. We found that W2512 causes severe atrophy of the bursa of Fabricius in SPF chickens and commercial yellow-feathered broilers, induces high levels of antibodies against IBDV, and protects chickens from infection with the novel variant strains via a placeholder effect. This study highlights the protective effect of commercial attenuated live vaccines against the novel IBDV variant and provides guidance for the prevention and control of this disease.
Collapse
Affiliation(s)
- Mei Leng
- Guangdong Provincial Animal Virus Vector Vaccine Engineering Technology Research Center, College of Animal Science, South China Agricultural University, Guangzhou, China
- Wen's Group Academy, Wen's Foodstuffs Group Co., Ltd, Xinxing, China
| | - Xiaomeng Bian
- Development Center of Science and Technology, Ministry of Agriculture and Rural Affairs, Beijing, China
| | - Yazheng Chen
- Guangdong Provincial Animal Virus Vector Vaccine Engineering Technology Research Center, College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Zhishan Liang
- Guangdong Provincial Animal Virus Vector Vaccine Engineering Technology Research Center, College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Jiamin Lian
- Guangdong Provincial Animal Virus Vector Vaccine Engineering Technology Research Center, College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Meng Chen
- Ceva China Technical & Marketing Department (Poultry), Beijing, China
| | - Feng Chen
- Guangdong Provincial Animal Virus Vector Vaccine Engineering Technology Research Center, College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Zhanxin Wang
- Wen's Group Academy, Wen's Foodstuffs Group Co., Ltd, Xinxing, China.
| | - Wencheng Lin
- Guangdong Provincial Animal Virus Vector Vaccine Engineering Technology Research Center, College of Animal Science, South China Agricultural University, Guangzhou, China.
| |
Collapse
|
10
|
Wu S, Ding T, Shao H, Qian K, Ye J, Qin A. A quadruplex real-time PCR assay combined with a conventional PCR for the differential detection of Marek's disease virus vaccines and field strains. Front Vet Sci 2023; 10:1161441. [PMID: 37252401 PMCID: PMC10213282 DOI: 10.3389/fvets.2023.1161441] [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: 02/08/2023] [Accepted: 04/10/2023] [Indexed: 05/31/2023] Open
Abstract
To evaluate the effect of the vaccine and differentiate vaccine from virulent MDV, a new quadruplex real-time PCR assay based on TaqMan probes was developed to differentiate and accurately quantify HVT, CVI988 and virulent MDV-1. The results showed that the limit of detection (LOD) of the new assay was 10 copies with correlation coefficients >0.994 of CVI988, HVT and virulent MDV DNA molecules without cross-reactivity with other avian disease viruses. The intra-assay and inter-assay coefficients of variation (CVs) of Ct values for the new assay were less than 3%. Analysis of replication kinetics of CVI988 and virulent MDV of collected feathers between 7 and 60 days post-infection (dpi) showed MD5 had no significant effect on the genomic load of CVI988 (p > 0.05), while vaccination with CVI988 could significantly reduce the viral load of MD5 (p < 0.05). Combined with meq gene PCR, this method can effectively identify virulent MDV infections in immunized chickens. These results demonstrated that this assay could distinguish between the vaccine and virulent MDV strains and had the advantages of being reliable, sensitive and specific to confirm the immunization status and monitor the circulation of virulent MDV strains.
Collapse
Affiliation(s)
- Shaopeng Wu
- Ministry of Education Key Laboratory for Avian Preventive Medicine, Yangzhou University, Yangzhou, Jiangsu, China
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, Jiangsu, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu, China
| | - Tian Ding
- Ministry of Education Key Laboratory for Avian Preventive Medicine, Yangzhou University, Yangzhou, Jiangsu, China
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, Jiangsu, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu, China
| | - Hongxia Shao
- Ministry of Education Key Laboratory for Avian Preventive Medicine, Yangzhou University, Yangzhou, Jiangsu, China
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, Jiangsu, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu, China
| | - Kun Qian
- Ministry of Education Key Laboratory for Avian Preventive Medicine, Yangzhou University, Yangzhou, Jiangsu, China
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, Jiangsu, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu, China
| | - Jianqiang Ye
- Ministry of Education Key Laboratory for Avian Preventive Medicine, Yangzhou University, Yangzhou, Jiangsu, China
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, Jiangsu, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu, China
| | - Aijian Qin
- Ministry of Education Key Laboratory for Avian Preventive Medicine, Yangzhou University, Yangzhou, Jiangsu, China
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, Jiangsu, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu, China
| |
Collapse
|
11
|
Zai X, Shi B, Shao H, Qian K, Ye J, Yao Y, Nair V, Qin A. Recombinant Turkey Herpesvirus Expressing H9N2 HA Gene at the HVT005/006 Site Induces Better Protection Than That at the HVT029/031 Site. Viruses 2022; 14:v14112495. [PMID: 36423104 PMCID: PMC9698400 DOI: 10.3390/v14112495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 10/31/2022] [Accepted: 11/07/2022] [Indexed: 11/16/2022] Open
Abstract
Turkey herpesvirus (HVT) is widely used as an effective recombinant vaccine vector for expressing protective antigens of multiple avian pathogens from different loci of the HVT genome. These include the HVT029/031 (UL22-23) locus for the insertion of IBDV VP2 and the recently identified HVT005/006 locus as a novel site for expressing heterologous proteins. In order to compare the efficacy of recombinant vaccines with the HA gene at different sites, the growth curves and the HA expression levels of HVT-005/006-hCMV-HA, HVT-005/006-MLV-HA, and HVT-029/031-MLV-HA were first examined in vitro. While the growth kinetics of three recombinant viruses were not significantly different from those of parent HVT, higher expression of the HA gene was achieved from the HVT005/006 site than that from the HVT029/031 site. The efficacy of the three recombinant viruses against avian influenza H9N2 virus was also evaluated using one-day-old SPF chickens. Chickens immunized with HVT-005/006-MLV-HA or HVT-005/006-hCMV-HA displayed reduced virus shedding compared to HVT-029/031-MLV-HA vaccinated chickens. Moreover, the overall hemagglutination inhibition (HI) antibody titers of HVT-005/006-HA-vaccinated chickens were higher than that of HVT-029/031-HA-vaccinated chickens. However, HVT-005/006-MLV-HA and HVT-005/006-hCMV-HA did not result in a significant difference in the level of HA expression in vitro and provided the same protective efficacy (100%) at 5 days after challenge. In the current study, the results suggested that recombinant HVT005/006 vaccines caused better expression of HA than recombinant HVT029/031 vaccine, and that HVT-005/006-MLV-HA or HVT-005/006-hCMV-HA could be a candidate vaccine for the protection of chickens against H9N2 influenza.
Collapse
Affiliation(s)
- Xusheng Zai
- Ministry of Education Key Laboratory for Avian Preventive Medicine, Yangzhou University, No.12 East Wenhui Road, Yangzhou 225009, China
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, No.12 East Wenhui Road, Yangzhou 225009, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou 225009, China
| | - Bin Shi
- Ministry of Education Key Laboratory for Avian Preventive Medicine, Yangzhou University, No.12 East Wenhui Road, Yangzhou 225009, China
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, No.12 East Wenhui Road, Yangzhou 225009, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou 225009, China
| | - Hongxia Shao
- Ministry of Education Key Laboratory for Avian Preventive Medicine, Yangzhou University, No.12 East Wenhui Road, Yangzhou 225009, China
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, No.12 East Wenhui Road, Yangzhou 225009, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou 225009, China
| | - Kun Qian
- Ministry of Education Key Laboratory for Avian Preventive Medicine, Yangzhou University, No.12 East Wenhui Road, Yangzhou 225009, China
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, No.12 East Wenhui Road, Yangzhou 225009, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou 225009, China
| | - Jianqiang Ye
- Ministry of Education Key Laboratory for Avian Preventive Medicine, Yangzhou University, No.12 East Wenhui Road, Yangzhou 225009, China
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, No.12 East Wenhui Road, Yangzhou 225009, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou 225009, China
| | - Yongxiu Yao
- The Pirbright Institute & UK-China Centre of Excellence for Research on Avian Diseases, Pirbright, Ash Road, Guildford, Surrey GU24 0NF, UK
| | - Venugopal Nair
- The Pirbright Institute & UK-China Centre of Excellence for Research on Avian Diseases, Pirbright, Ash Road, Guildford, Surrey GU24 0NF, UK
- Correspondence: (V.N.); (A.Q.); Tel.: +44-(0)1483-231-415 (V.N.); +86-(0)-514–87979217 (A.Q.)
| | - Aijian Qin
- Ministry of Education Key Laboratory for Avian Preventive Medicine, Yangzhou University, No.12 East Wenhui Road, Yangzhou 225009, China
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, No.12 East Wenhui Road, Yangzhou 225009, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou 225009, China
- Correspondence: (V.N.); (A.Q.); Tel.: +44-(0)1483-231-415 (V.N.); +86-(0)-514–87979217 (A.Q.)
| |
Collapse
|
12
|
Zai X, Shi B, Shao H, Qian K, Ye J, Yao Y, Nair V, Qin A. Identification of a Novel Insertion Site HVT-005/006 for the Generation of Recombinant Turkey Herpesvirus Vector. Front Microbiol 2022; 13:886873. [PMID: 35694305 PMCID: PMC9174942 DOI: 10.3389/fmicb.2022.886873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Accepted: 04/19/2022] [Indexed: 11/13/2022] Open
Abstract
Turkey herpesvirus (HVT) has been widely used as a successful live virus vaccine against Marek's disease (MD) in chickens for more than five decades. Increasingly, HVT is also used as a highly effective recombinant vaccine vector against multiple avian pathogens. Conventional recombination, or recombineering, techniques that involve the cloning of viral genomes and, more recently, gene editing methods have been used for the generation of recombinant HVT-based vaccines. In this study, we used NHEJ-dependent CRISPR/Cas9-based approaches to insert the mCherry cassette for the screening of the HVT genome and identifying new potential sites for the insertion of foreign genes. A novel intergenic site HVT-005/006 in the unique long (UL) region of the HVT genome was identified, and mCherry was found to be stably expressed when inserted at this site. To confirm whether this site was suitable for the insertion of other exogenous genes, haemagglutinin (HA) of the H9N2 virus was inserted into this site, and a recombinant HVT-005/006-HA was rescued. The recombinant HVT-HA can grow well and express HA protein stably, which demonstrated that HVT-005/006 is a promising site for the insertion of foreign genes.
Collapse
Affiliation(s)
- Xusheng Zai
- Ministry of Education Key Lab for Avian Preventive Medicine, Yangzhou University, Yangzhou, China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou, China
| | - Bin Shi
- Ministry of Education Key Lab for Avian Preventive Medicine, Yangzhou University, Yangzhou, China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou, China
| | - Hongxia Shao
- Ministry of Education Key Lab for Avian Preventive Medicine, Yangzhou University, Yangzhou, China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou, China
| | - Kun Qian
- Ministry of Education Key Lab for Avian Preventive Medicine, Yangzhou University, Yangzhou, China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou, China
| | - Jianqiang Ye
- Ministry of Education Key Lab for Avian Preventive Medicine, Yangzhou University, Yangzhou, China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou, China
| | - Yongxiu Yao
- The Pirbright Institute & UK-China Centre of Excellence for Research on Avian Diseases, Guildford, United Kingdom
| | - Venugopal Nair
- The Pirbright Institute & UK-China Centre of Excellence for Research on Avian Diseases, Guildford, United Kingdom
| | - Aijian Qin
- Ministry of Education Key Lab for Avian Preventive Medicine, Yangzhou University, Yangzhou, China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, China
- Joint International Research Laboratory of Agriculture and Agri-Product Safety, The Ministry of Education of China, Yangzhou, China
| |
Collapse
|
13
|
Jia W, Zhang X, Wang H, Teng Q, Xue J, Zhang G. Construction and immune efficacy of a recombinant turkey herpesvirus vaccine strain expressing fusion protein of genotype VII Newcastle disease virus. Vet Microbiol 2022; 268:109429. [DOI: 10.1016/j.vetmic.2022.109429] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 04/01/2022] [Accepted: 04/03/2022] [Indexed: 12/24/2022]
|
14
|
A Recombinant Turkey Herpesvirus Expressing the F Protein of Newcastle Disease Virus Genotype XII Generated by NHEJ-CRISPR/Cas9 and Cre-LoxP Systems Confers Protection against Genotype XII Challenge in Chickens. Viruses 2022; 14:v14040793. [PMID: 35458523 PMCID: PMC9030537 DOI: 10.3390/v14040793] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 03/31/2022] [Accepted: 04/04/2022] [Indexed: 12/10/2022] Open
Abstract
In this study, we developed a new recombinant virus rHVT-F using a Turkey herpesvirus (HVT) vector, expressing the fusion (F) protein of the genotype XII Newcastle disease virus (NDV) circulating in Peru. We evaluated the viral shedding and efficacy against the NDV genotype XII challenge in specific pathogen-free (SPF) chickens. The F protein expression cassette was inserted in the unique long (UL) UL45–UL46 intergenic locus of the HVT genome by utilizing a clustered regularly interspaced short palindromic repeat (CRISPR)/Cas9 gene-editing technology via a non-homologous end joining (NHEJ) repair pathway. The rHVT-F virus, which expressed the F protein stably in vitro and in vivo, showed similar growth kinetics to the wild-type HVT (wtHVT) virus. The F protein expression of the rHVT-F virus was detected by an indirect immunofluorescence assay (IFA), Western blotting, and a flow cytometry assay. The presence of an NDV-specific IgY antibody was detected in serum samples by an enzyme-linked immunosorbent assay (ELISA) in SPF chickens vaccinated with the rHVT-F virus. In the challenge experiment, the rHVT-F vaccine fully protects a high, and significantly reduced, virus shedding in oral at 5 days post-challenge (dpc). In conclusion, this new rHVT-F vaccine candidate is capable of fully protecting SPF chickens against the genotype XII challenge.
Collapse
|
15
|
Hein R, Koopman R, García M, Armour N, Dunn JR, Barbosa T, Martinez A. Review of Poultry Recombinant Vector Vaccines. Avian Dis 2021; 65:438-452. [PMID: 34699141 DOI: 10.1637/0005-2086-65.3.438] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Accepted: 06/02/2021] [Indexed: 11/05/2022]
Abstract
The control of poultry diseases has relied heavily on the use of many live and inactivated vaccines. However, over the last 30 yr, recombinant DNA technology has been used to generate many novel poultry vaccines. Fowlpox virus and turkey herpesvirus are the two main vectors currently used to construct recombinant vaccines for poultry. With the use of these two vectors, more than 15 recombinant viral vector vaccines against Newcastle disease, infectious laryngotracheitis, infectious bursal disease, avian influenza, and Mycoplasma gallisepticum have been developed and are commercially available. This review focuses on current knowledge about the safety and efficacy of recombinant viral vectored vaccines and the mechanisms by which they facilitate the control of multiple diseases. Additionally, the development of new recombinant vaccines with novel vectors will be briefly discussed.
Collapse
Affiliation(s)
- Ruud Hein
- Consultant Poultry Diseases Molecular Vaccine Technology Georgetown DE 19947,
| | - Rik Koopman
- MSD Animal Health/Intervet International BV, Boxmeer, 5831 AN Netherlands
| | - Maricarmen García
- Poultry Diagnostic and Research Center, Department of Population Health, College of Veterinary Medicine, University of Georgia, Athens, GA 30602
| | - Natalie Armour
- Poultry Research and Diagnostic Laboratory, Department of Pathobiology and Population Medicine, College of Veterinary Medicine, Mississippi State University, Pearl, MS 39208
| | - John R Dunn
- United States Department of Agriculture, Agricultural Research Service, U.S. National Poultry Research Center, Southeast Poultry Research Laboratory, Athens, GA 30602
| | | | - Algis Martinez
- Cobb-Vantress Global Veterinary Services, Siloam Springs, AR 72761
| |
Collapse
|
16
|
Latest Advances of Virology Research Using CRISPR/Cas9-Based Gene-Editing Technology and Its Application to Vaccine Development. Viruses 2021; 13:v13050779. [PMID: 33924851 PMCID: PMC8146441 DOI: 10.3390/v13050779] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 04/26/2021] [Accepted: 04/27/2021] [Indexed: 02/07/2023] Open
Abstract
In recent years, the CRISPR/Cas9-based gene-editing techniques have been well developed and applied widely in several aspects of research in the biological sciences, in many species, including humans, animals, plants, and even in viruses. Modification of the viral genome is crucial for revealing gene function, virus pathogenesis, gene therapy, genetic engineering, and vaccine development. Herein, we have provided a brief review of the different technologies for the modification of the viral genomes. Particularly, we have focused on the recently developed CRISPR/Cas9-based gene-editing system, detailing its origin, functional principles, and touching on its latest achievements in virology research and applications in vaccine development, especially in large DNA viruses of humans and animals. Future prospects of CRISPR/Cas9-based gene-editing technology in virology research, including the potential shortcomings, are also discussed.
Collapse
|
17
|
Marusic C, Drissi Touzani C, Bortolami A, Donini M, Zanardello C, Lico C, Rage E, Fellahi S, El Houadfi M, Terregino C, Baschieri S. The expression in plants of an engineered VP2 protein of Infectious Bursal Disease Virus induces formation of structurally heterogeneous particles that protect from a very virulent viral strain. PLoS One 2021; 16:e0247134. [PMID: 33592038 PMCID: PMC7886152 DOI: 10.1371/journal.pone.0247134] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Accepted: 02/01/2021] [Indexed: 11/18/2022] Open
Abstract
Infectious Bursal Disease Virus (IBDV), the etiological agent of Gumboro disease, causes mortality and immunosuppression in chickens and major losses to poultry industry worldwide. The IBDV major capsid protein VP2 is considered the best candidate for the production of novel subunit vaccines. This structural protein contains the major conformational epitopes responsible for the induction of IBDV neutralizing antibodies in chickens and has been demonstrated able to form supramolecular structures in yeast and insect cells. The aim of this study was to express an engineered version of the VP2 protein (His-pVP2) to verify its ability to self-assemble into virus-like particles in plants. The recombinant VP2 was transiently expressed by agroinfiltration in Nicotiana benthamiana and transmission electron microscopy of sucrose density gradient fractions revealed the presence of a mixed population of differently shaped particles ranging from spherical capsids, with a diameter between ~25 and ~70 nm, to tubular structures, with variable length (from 100 to 400 nm). The recombinant VP2-based particles when used for the intramuscular immunization of specific-pathogen-free chicks resulted able to induce the production of anti-IBDV specific antibodies at titers comparable to those induced by a commercial vaccine. Moreover, all the immunized birds survived to the challenge with a Moroccan very virulent IBDV strain with no major histomorphological alterations of the Bursa of Fabricius, similarly to what obtained with the commercial inactivated vaccine.
Collapse
Affiliation(s)
- Carla Marusic
- Laboratory of Biotechnology, ENEA Casaccia Research Center, Rome, Italy
| | - Charifa Drissi Touzani
- Avian Pathology Unit, Pathology and Veterinary Public Health Department, Agronomy and Veterinary Institute Hassan II, Rabat, Morocco
| | - Alessio Bortolami
- Specialized Virology and Experimental Research Department Istituto Zooprofilattico Sperimentale delle Venezie, Legnaro, Italy
| | - Marcello Donini
- Laboratory of Biotechnology, ENEA Casaccia Research Center, Rome, Italy
| | - Claudia Zanardello
- Diagnostic Services, Histopathology, Parasitology Department, Istituto Zooprofilattico Sperimentale delle Venezie, Legnaro, Italy
| | - Chiara Lico
- Laboratory of Biotechnology, ENEA Casaccia Research Center, Rome, Italy
| | - Emile Rage
- Laboratory of Biotechnology, ENEA Casaccia Research Center, Rome, Italy
| | - Siham Fellahi
- Avian Pathology Unit, Pathology and Veterinary Public Health Department, Agronomy and Veterinary Institute Hassan II, Rabat, Morocco
| | - Mohammed El Houadfi
- Avian Pathology Unit, Pathology and Veterinary Public Health Department, Agronomy and Veterinary Institute Hassan II, Rabat, Morocco
| | - Calogero Terregino
- Specialized Virology and Experimental Research Department Istituto Zooprofilattico Sperimentale delle Venezie, Legnaro, Italy
| | - Selene Baschieri
- Laboratory of Biotechnology, ENEA Casaccia Research Center, Rome, Italy
| |
Collapse
|
18
|
Dunn JR, Mays J, Hearn C, Hartman A. Comparison of Marek's disease virus challenge strains and bird types for vaccine licensing. Avian Dis 2021; 65:241-249. [PMID: 33567073 DOI: 10.1637/aviandiseases-d-20-00122] [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: 11/04/2020] [Accepted: 02/10/2021] [Indexed: 11/05/2022]
Abstract
Marek's disease virus (MDV) is an important poultry pathogen which is controlled through widespread vaccination with avirulent and attenuated strains, but continued evolution of field viruses to higher virulence has required ongoing improvement of available vaccine strains, and these vaccine strains also offer an attractive platform for designing recombinant vector vaccines with cross-protection against MDV and additional pathogens. Recent reports of failures in vaccine licensing trials of positive controls to reach appropriately high levels of MD incidence prompted us to evaluate possible combinations of outbred specific pathogen-free (SPF) layer lines and alternative virulent challenge strains which could provide more consistent models for serotype-3 vectored vaccine development. Choice of layer line and virulent MDV challenge strain each contributed to the ability of a challenge model to reach 80 percent virulence in unvaccinated positive control groups in the majority of trials without overwhelming serotype-3 vectored vaccine protection in vaccinated groups. Conversely, reducing challenge virus dose by a factor of four, or vaccine dose by half, had no consistent effect across these models. Although MDV strain 617A had the most potential as an alternative to strains that are currently approved for licensing trials, no combination of layer line and challenge virus consistently met the goals for a successful challenge model in all study replicates, indicating that high variability is an inherent difficulty in MDV challenge studies, at least when outbred birds are used.
Collapse
Affiliation(s)
- John R Dunn
- USDA-ARS Reviewer US National Poultry Research Center 934 College Station Rd UNITED STATES Athens GA 30605 1-706-546-3642
| | | | | | | |
Collapse
|
19
|
Romanutti C, Keller L, Zanetti FA. Current status of virus-vectored vaccines against pathogens that affect poultry. Vaccine 2020; 38:6990-7001. [PMID: 32951939 DOI: 10.1016/j.vaccine.2020.09.013] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 08/12/2020] [Accepted: 09/02/2020] [Indexed: 01/04/2023]
Abstract
The most effective strategies for the control of disease in poultry are vaccination and biosecurity. Vaccines useful against pathogens affecting poultry must be safe, effective with a single dose, inexpensive, applicable by mass vaccination methods, and able to induce a protective immune response in the presence of maternal antibodies. Viral vector meet some of these characteristics and if the attenuated virus used as vector infects birds, the vaccine will have the advantage of being bivalent. Thus, viral vectors are currently a tool of choice for the development of new poultry vaccines. This review describes the main viruses used as vectors for the delivery and in vivo expression of antigens of poultry pathogens. It also presents the methodologies most frequently used to obtain recombinant viral vectors and summarizes the state-of-the-art related to vectored vaccines in poultry (some of them currently licensed), the pathogens targeted and their antigens, and the ability of these vaccines to induce an effective immune response. Finally, the review discusses the results of a few studies comparing recombinant viral vector vaccines and live-attenuated vaccines in vaccine matching challenges, and mentions strategies and future researches that can help to improve the efficacy of vectored vaccines in poultry birds.
Collapse
Affiliation(s)
- Carina Romanutti
- Centro de Virología Animal (CEVAN), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Saladillo 2468 (C1440FFX), Ciudad Autónoma de Buenos Aires, Argentina.
| | - Leticia Keller
- Instituto de Ciencia y Tecnología "Dr. Cesar Milstein", CONICET, Saladillo 2468 (C1440FFX), Ciudad Autónoma de Buenos Aires, Argentina.
| | - Flavia Adriana Zanetti
- Instituto de Ciencia y Tecnología "Dr. Cesar Milstein", CONICET, Saladillo 2468 (C1440FFX), Ciudad Autónoma de Buenos Aires, Argentina.
| |
Collapse
|
20
|
Rauw F, Ngabirano E, Gardin Y, Palya V, Lambrecht B. Effectiveness of a Simultaneous rHVT-F(ND) and rHVT-H5(AI) Vaccination of Day-Old Chickens and the Influence of NDV- and AIV-Specific MDA on Immune Response and Conferred Protection. Vaccines (Basel) 2020; 8:vaccines8030536. [PMID: 32948028 PMCID: PMC7565404 DOI: 10.3390/vaccines8030536] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 09/10/2020] [Accepted: 09/11/2020] [Indexed: 11/16/2022] Open
Abstract
The recombinant herpesvirus of turkey (rHVT) vaccines targeting Newcastle disease (ND) and H5Nx avian influenza (AI) have been demonstrated efficient in chickens when used individually at day-old. Given the practical field constraints associated with administering two vaccines separately and in the absence of a currently available bivalent rHVT vector vaccine expressing both F(ND) and H5(AI) antigens, the aim of this study was to investigate whether interference occurs between the two vaccines when simultaneously administered in a single shot. The studies have been designed to determine (i) the ND and AI-specific protection and antibody response conferred by these vaccines inoculated alone or in combination at day-old, (ii) the influence of maternally-derived antibodies (MDA), and (iii) the potential interference between the two vaccine. Our results demonstrate that their combined administration is efficient to protect chickens against clinical signs of velogenic Newcastle disease virus (vNDV) and H5-highly pathogenic avian influenza virus (HPAIV) infections. Viral shedding following co-vaccination is also markedly reduced, while slightly lower NDV- and AIV-specific antibody responses are observed. NDV- and AIV-specific MDA show negative effects on the onset of the specific antibody responses. However, if AIV-specific MDA reduce the protection against H5-HPAIV induced by rHVT-H5(AI) vaccine, it was not observed for ND.
Collapse
Affiliation(s)
- Fabienne Rauw
- Sciensano, Avian Virology and Immunology Service, Groeselenberg 99, 1180 Brussels, Belgium; (E.N.); (B.L.)
- Correspondence:
| | - Eva Ngabirano
- Sciensano, Avian Virology and Immunology Service, Groeselenberg 99, 1180 Brussels, Belgium; (E.N.); (B.L.)
| | - Yannick Gardin
- CEVA Santé Animale, Avenue de la Ballastière 10, 33 500 Libourne, France;
| | - Vilmos Palya
- CEVA Phylaxia, Szállás utca 5, 1107 Budapest, Hungary;
| | - Bénédicte Lambrecht
- Sciensano, Avian Virology and Immunology Service, Groeselenberg 99, 1180 Brussels, Belgium; (E.N.); (B.L.)
| |
Collapse
|
21
|
Lupini C, Quaglia G, Mescolini G, Russo E, Salaroli R, Forni M, Boldini S, Catelli E. Alteration of immunological parameters in infectious bronchitis vaccinated-specific pathogen-free broilers after the use of different infectious bursal disease vaccines. Poult Sci 2020; 99:4351-4359. [PMID: 32867979 PMCID: PMC7318956 DOI: 10.1016/j.psj.2020.05.054] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 05/11/2020] [Accepted: 05/23/2020] [Indexed: 12/28/2022] Open
Abstract
The vaccines currently available to control infectious bursal disease (IBD) include live-attenuated and inactivated vaccines, immune-complex vaccines, and vaccines consisting of viral constructs of herpesvirus of turkeys genetically engineered to express VP2 surface protein. To evaluate the impact of vaccines on the chicken immune system, 2 animal trials were performed in specific pathogen-free broiler chickens. In trial 1, birds were either vaccinated when they are one-day old with a dual recombinant herpes virus of turkey construct vaccine, expressing VP2 protein of (IBDV) and F protein of Newcastle disease virus, or an immune-complex IBDV vaccine or birds were not vaccinated. At 14, 28, and 35 D, the bursa of Fabricius was collected for bursa:body weight (B:BW) ratio calculation. In trial 2, birds were vaccinated when they were 1-day old according to the same protocol as trial 1, but at day 14, all groups also received a live infectious bronchitis (IB) vaccine. At 0, 7, 14, 21, and 28 days after IB vaccination, birds were tested by ELISA for IB serology and, soon after the last blood sampling, they were euthanized for collection of Harderian glands, trachea, and spleen and testing by flow cytometry for characterization of mononuclear cells. The immune-complex vaccine groups showed significantly lower B:BW ratio, lower IBV antibody titers, and higher mean percentage of CD8+ T cells in the spleen, trachea, and Harderian glands than those in the other experimental groups. The results of the in vivo trials coupled with a depth analysis of the repertoire of parameters involved in the immune response to IBD and IB vaccinations show one vaccine may influence the immune response of other vaccines included in the vaccination program.
Collapse
Affiliation(s)
- Caterina Lupini
- Department of Veterinary Medical Sciences, University of Bologna, 40064 Ozzano dell'Emilia, BO, Italy
| | - Giulia Quaglia
- Department of Veterinary Medical Sciences, University of Bologna, 40064 Ozzano dell'Emilia, BO, Italy
| | - Giulia Mescolini
- Department of Veterinary Medical Sciences, University of Bologna, 40064 Ozzano dell'Emilia, BO, Italy
| | - Elisa Russo
- MSD Animal Health Srl, 20090 Segrate, MI, Italy
| | - Roberta Salaroli
- Department of Veterinary Medical Sciences, University of Bologna, 40064 Ozzano dell'Emilia, BO, Italy
| | - Monica Forni
- Department of Veterinary Medical Sciences, University of Bologna, 40064 Ozzano dell'Emilia, BO, Italy
| | | | - Elena Catelli
- Department of Veterinary Medical Sciences, University of Bologna, 40064 Ozzano dell'Emilia, BO, Italy.
| |
Collapse
|
22
|
López de Juan Abad BA, Cortes AL, Correa M, Gimeno IM. Evaluation of Factors That Influence Dose Variability of Marek's Disease Vaccines. Avian Dis 2020; 63:591-598. [PMID: 31865673 DOI: 10.1637/aviandiseases-d-19-00097] [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: 04/08/2019] [Accepted: 07/01/2019] [Indexed: 11/05/2022]
Abstract
Marek's disease (MD) vaccines are cell-associated and require special handling and care during administration. Vaccine dose is evaluated by plaque assay and is indicated as the number of plaque-forming units (PFUs) per dose. The objectives of this study were to evaluate the dose variability within each vial of MD vaccines and to assess those factors (from both manufacturing and handling and administration of the vaccine) that could affect vaccine dose variability. Three experiments were conducted. Experiment 1 was to evaluate dose variability in 36 MD vaccine vials and the effect of manufacturing factors on dose variability. Vaccines were titrated 10 times. Dose variability was measured as the coefficient of variability (CV) calculated as standard deviation divided by average PFU and multiplied by 100. Our results showed that all evaluated vaccines had levels of CV ranging from 10% to 34%. Variability existed regardless of manufacturer, vaccine serotype, and batch. Experiment 2 was conducted to evaluate the effect of infectivity rate (IR) on CV. IR was artificially reduced by adding noninfected chicken embryo fibroblast to the reconstituted vaccine before titration. Our results showed that decreased IR results in higher CV. Experiment 3 was to evaluate the handling and administration factors (time and mixing during administration) on CV. Our results showed that CV tends to increase with time and that this effect is more remarkable if vaccines were not mixed. Our study emphasizes the relevance of proper handling of MD vaccines and shows that dose variability can jeopardize the uniformity of vaccination in a flock and therefore the success of vaccination.
Collapse
Affiliation(s)
- B A López de Juan Abad
- Department of Population Health and Pathobiology, Veterinary School, North Carolina State University, Raleigh, NC 27607
| | - A L Cortes
- Department of Population Health and Pathobiology, Veterinary School, North Carolina State University, Raleigh, NC 27607
| | - M Correa
- Department of Population Health and Pathobiology, Veterinary School, North Carolina State University, Raleigh, NC 27607
| | - I M Gimeno
- Department of Population Health and Pathobiology, Veterinary School, North Carolina State University, Raleigh, NC 27607,
| |
Collapse
|
23
|
A recombinant bovine herpesvirus-4 vectored vaccine delivered via intranasal nebulization elicits viral neutralizing antibody titers in cattle. PLoS One 2019; 14:e0215605. [PMID: 31002724 PMCID: PMC6474629 DOI: 10.1371/journal.pone.0215605] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Accepted: 04/05/2019] [Indexed: 02/05/2023] Open
Abstract
Recombinant herpesvirus vaccine vectors offer distinct advantages in next-generation vaccine development, primarily due to the ability to establish persistent infections to provide sustainable antigen responses in the host. Recombinant bovine herpesvirus-4 (BoHV-4) has been previously shown to elicit protective immunity in model laboratory animal species against a variety of pathogens. For the first time, we describe the induction of antigen-specific immune responses to two delivered antigens in the host species after intranasal nebulization of recombinant BoHV-4 expressing the chimeric peptide containing the bovine viral diarrhea virus (BVDV) glycoprotein E2 and the bovine herpesvirus 1 (BoHV-1) glycoprotein D (BoHV-4-A-CMV-IgK-gE2gD-TM). In this study, four cattle were immunized via intranasal nebulization with the recombinant BoHV-4 construct. Two of the cattle were previously infected with wild-type BoHV-4, and both developed detectable serologic responses to BVDV and BoHV-1. All four immunized cattle developed detectable viral neutralizing antibody responses to BVDV, and one steer developed a transient viral neutralizing response to BoHV-1. Approximately one year after immunization, immunosuppressive doses of the glucocorticoid dexamethasone were administered intravenously to all four cattle. Within two weeks of immunosuppression, all animals developed viral neutralizing antibody responses to BoHV-1, and all animals maintained BVDV viral neutralizing capacity. Overall, nebulization of BoHV-4-A-CMV-IgK-gE2gD-TM persistently infects cattle, is capable of eliciting antigen-specific immunity following immunization, including in the presence of pre-existing BoHV-4 immunity, and recrudescence of the virus boosts the immune response to BoHV-4-vectored antigens. These results indicate that BoHV-4 is a viable and attractive vaccine delivery platform for use in cattle.
Collapse
|
24
|
Wang AP, Liu L, Gu LL, Guo CM, Wu S, Feng Q, Xia WL, Wu Z, Zhu SY. Protection against duck hepatitis a virus type 1 conferred by a recombinant avian adeno-associated virus. Poult Sci 2019; 98:112-118. [PMID: 30053293 DOI: 10.3382/ps/pey325] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Accepted: 06/29/2018] [Indexed: 11/20/2022] Open
Abstract
The avian adeno-associated virus (AAAV) has been proved to be an efficient gene transfer vector for human gene therapy and vaccine research. In this experiment, an AAAV-based vaccine was evaluated for the development of a vaccine against duck hepatitis a virus type 1 (DHAV-1). The major capsid VP1 gene was amplified and subcloned into pFBGFP containing the inverted terminal repeats of AAAV, and then the recombinant baculovirus rBac-VP1 was generated. The recombinant AAAV expressing the VP1 protein (rAAAV-VP1) was produced by co-infecting Sf9 cells with rBac-VP1 and the other 2 baculoviruses containing AAAV functional genes and structural genes respectively, and confirmed by electron microscopy, Western blotting and immunofluorescence assays. Quantitative real-time PCR revealed that the titer of rAAAV-VP1 was about 9 × 1012 VG/mL. Immunogenicity was studied in ducklings. One day ducklings were injected intramuscularly once with rAAAV-VP1. Serum from rAAAV-VP1-vaccinated ducklings showed a systemic immune response evidenced by VP1-specific enzyme-linked immunosorbent assay and virus neutralization test. Furthermore, all ducklings inoculated with rAAAV-VP1 were protected against DHAV-1 challenge. The data of quantitative real-time RT-PCR from livers of challenged ducklings also showed that the level of virus copies in rAAAV-VP1 group was significantly lower than that of the PBS group. Collectively, these results demonstrate that the AAAV-based vaccine is a potential vaccine candidate for the control of duck viral hepatitis.
Collapse
Affiliation(s)
- A P Wang
- Jiangsu Agri-animal Husbandry Vocational College, Veterinary Bio-Pharmaceutical, Jiangsu Key Laboratory for High-Tech Research and Development of Veterinary Biopharmaceuticals, Taizhou, 225300, China
| | - L Liu
- Jiangsu Agri-animal Husbandry Vocational College, Veterinary Bio-Pharmaceutical, Jiangsu Key Laboratory for High-Tech Research and Development of Veterinary Biopharmaceuticals, Taizhou, 225300, China
| | - L L Gu
- Jiangsu Agri-animal Husbandry Vocational College, Veterinary Bio-Pharmaceutical, Jiangsu Key Laboratory for High-Tech Research and Development of Veterinary Biopharmaceuticals, Taizhou, 225300, China
| | - C M Guo
- Jiangsu Agri-animal Husbandry Vocational College, Veterinary Bio-Pharmaceutical, Jiangsu Key Laboratory for High-Tech Research and Development of Veterinary Biopharmaceuticals, Taizhou, 225300, China
| | - S Wu
- Jiangsu Agri-animal Husbandry Vocational College, Veterinary Bio-Pharmaceutical, Jiangsu Key Laboratory for High-Tech Research and Development of Veterinary Biopharmaceuticals, Taizhou, 225300, China
| | - Q Feng
- Jiangsu Agri-animal Husbandry Vocational College, Veterinary Bio-Pharmaceutical, Jiangsu Key Laboratory for High-Tech Research and Development of Veterinary Biopharmaceuticals, Taizhou, 225300, China
| | - W L Xia
- Jiangsu Agri-animal Husbandry Vocational College, Veterinary Bio-Pharmaceutical, Jiangsu Key Laboratory for High-Tech Research and Development of Veterinary Biopharmaceuticals, Taizhou, 225300, China
| | - Z Wu
- Jiangsu Agri-animal Husbandry Vocational College, Veterinary Bio-Pharmaceutical, Jiangsu Key Laboratory for High-Tech Research and Development of Veterinary Biopharmaceuticals, Taizhou, 225300, China
| | - S Y Zhu
- Jiangsu Agri-animal Husbandry Vocational College, Veterinary Bio-Pharmaceutical, Jiangsu Key Laboratory for High-Tech Research and Development of Veterinary Biopharmaceuticals, Taizhou, 225300, China
| |
Collapse
|
25
|
Liu L, Wang T, Wang M, Tong Q, Sun Y, Pu J, Sun H, Liu J. Recombinant turkey herpesvirus expressing H9 hemagglutinin providing protection against H9N2 avian influenza. Virology 2019; 529:7-15. [PMID: 30641481 DOI: 10.1016/j.virol.2019.01.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Revised: 12/13/2018] [Accepted: 01/03/2019] [Indexed: 12/22/2022]
Abstract
H9N2 avian influenza viruses (AIVs) were prevailing in chickens, causing great economic losses and public health threats. In this study, turkey herpesviruses (HVT) was cloned as an infectious bacterial artificial chromosomes (BAC). Recombinant HVT (rHVT-H9) containing hemagglutinin (HA) gene from H9N2 virus were constructed via galactokinase (galK) selection and clustered regularly interspaced short palindromic repeats/associated 9 (CRISPR/Cas9) gene editing system. The recombinant rHVT-H9 showed no difference with parent HVT in plague morphology and virus replication kinetics. H9 protein expression of rHVT-H9 could be detected by western blot and indirect immunofluorescence assay (IFA) in vitro and in vivo. Immunization with rHVT-H9 could induce robust humoral and cellular immunity in chickens. In the challenge study, no chicken shed H9N2 virus from oropharynx and cloaca, and no H9N2 virus was found in viscera in vaccination groups. The result suggests that rHVT-H9 provides effective protection against H9N2 AIV in chickens.
Collapse
Affiliation(s)
- Litao Liu
- Key Laboratory of Animal Epidemiology and Zoonosis, Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - Tong Wang
- Key Laboratory of Animal Epidemiology and Zoonosis, Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - Mingyang Wang
- Key Laboratory of Animal Epidemiology and Zoonosis, Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - Qi Tong
- Key Laboratory of Animal Epidemiology and Zoonosis, Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - Yipeng Sun
- Key Laboratory of Animal Epidemiology and Zoonosis, Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - Juan Pu
- Key Laboratory of Animal Epidemiology and Zoonosis, Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - Honglei Sun
- Key Laboratory of Animal Epidemiology and Zoonosis, Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China.
| | - Jinhua Liu
- Key Laboratory of Animal Epidemiology and Zoonosis, Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China.
| |
Collapse
|
26
|
Tang N, Zhang Y, Pedrera M, Chang P, Baigent S, Moffat K, Shen Z, Nair V, Yao Y. A simple and rapid approach to develop recombinant avian herpesvirus vectored vaccines using CRISPR/Cas9 system. Vaccine 2018; 36:716-722. [PMID: 29269155 PMCID: PMC5783714 DOI: 10.1016/j.vaccine.2017.12.025] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Revised: 11/27/2017] [Accepted: 12/11/2017] [Indexed: 12/13/2022]
Abstract
Herpesvirus of turkeys (HVT) has been successfully used as live vaccine against Marek's disease (MD) worldwide for more than 40 years either alone or in combination with other serotypes. HVT is also widely used as a vector platform for generation of recombinant vaccines against a number of avian diseases such as infectious bursal disease (IBD), Newcastle disease (ND) and avian influenza (AI) using conventional recombination methods or recombineering tools on cloned viral genomes. In the present study, we describe the application of CRISPR/Cas9-based genome editing as a rapid and efficient method of generating HVT recombinants expressing VP2 protein of IBDV. This approach offers an efficient method to introduce other viral antigens into the HVT genome for rapid development of recombinant vaccines.
Collapse
Affiliation(s)
- Na Tang
- The Pirbright Institute & UK-China Centre of Excellence for Research on Avian Diseases, Pirbright, Ash Road, Guildford, Surrey GU24 0NF, United Kingdom; Binzhou Animal Science and Veterinary Medicine Academy & UK-China Centre of Excellence for Research on Avian Diseases, Binzhou 256600, Shandong, PR China
| | - Yaoyao Zhang
- The Pirbright Institute & UK-China Centre of Excellence for Research on Avian Diseases, Pirbright, Ash Road, Guildford, Surrey GU24 0NF, United Kingdom
| | - Miriam Pedrera
- The Pirbright Institute & UK-China Centre of Excellence for Research on Avian Diseases, Pirbright, Ash Road, Guildford, Surrey GU24 0NF, United Kingdom
| | - Pengxiang Chang
- The Pirbright Institute & UK-China Centre of Excellence for Research on Avian Diseases, Pirbright, Ash Road, Guildford, Surrey GU24 0NF, United Kingdom
| | - Susan Baigent
- The Pirbright Institute & UK-China Centre of Excellence for Research on Avian Diseases, Pirbright, Ash Road, Guildford, Surrey GU24 0NF, United Kingdom
| | - Katy Moffat
- The Pirbright Institute & UK-China Centre of Excellence for Research on Avian Diseases, Pirbright, Ash Road, Guildford, Surrey GU24 0NF, United Kingdom
| | - Zhiqiang Shen
- Binzhou Animal Science and Veterinary Medicine Academy & UK-China Centre of Excellence for Research on Avian Diseases, Binzhou 256600, Shandong, PR China
| | - Venugopal Nair
- The Pirbright Institute & UK-China Centre of Excellence for Research on Avian Diseases, Pirbright, Ash Road, Guildford, Surrey GU24 0NF, United Kingdom.
| | - Yongxiu Yao
- The Pirbright Institute & UK-China Centre of Excellence for Research on Avian Diseases, Pirbright, Ash Road, Guildford, Surrey GU24 0NF, United Kingdom.
| |
Collapse
|
27
|
Gallid herpesvirus 3 SB-1 strain as a recombinant viral vector for poultry vaccination. NPJ Vaccines 2018; 3:21. [PMID: 29872549 PMCID: PMC5972151 DOI: 10.1038/s41541-018-0056-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Revised: 04/23/2018] [Accepted: 04/25/2018] [Indexed: 11/11/2022] Open
Abstract
Live herpesvirus-vectored vaccines are widely used in veterinary medicine to protect against many infectious diseases. In poultry, three strains of herpesvirus vaccines are used against Marek's disease (MD). However, of these, only the herpesvirus of turkeys (HVT) has been successfully developed and used as a recombinant vaccine vector to induce protection against other avian viral diseases such as infectious bursal disease (IBD), Newcastle disease (ND) or avian influenza (AI). Although effective when administered individually, recombinant HVT vectors have limitations when combined in multivalent vaccines. Thus there is a need for developing additional viral vectors that could be combined with HVT in inducing protection against multiple avian diseases in multivalent vaccines. Gallid herpesvirus 3 (GaHV3) strain SB-1 is widely used by the poultry industry as bivalent vaccine in combination with HVT to exploit synergistic effects against MD. Here, we report the development and application of SB-1 as a vaccine vector to express the VP2 capsid antigen of IBD virus. A VP2 expression cassette was introduced into the SB-1 genome at three intergenic locations (UL3/UL4, UL10/UL11 and UL21/UL22) using recombineering methods on the full-length pSB-1 infectious clone of the virus. We show that the recombinant SB-1 vectors expressing VP2 induced neutralising antibody responses at levels comparable to that of commercial HVT-based VAXXITEKHVT+IBD vaccine. Birds vaccinated with the experimental recombinant SB-1 vaccine were protected against clinical disease after challenge with the very virulent UK661 IBDV isolate, demonstrating its value as an efficient viral vector for developing multivalent vaccines against avian diseases.
Collapse
|
28
|
Early immune responses and profiling of cell-mediated immunity-associated gene expression in response to rHVT-IBD vaccination. Vaccine 2017; 36:615-623. [PMID: 29290477 DOI: 10.1016/j.vaccine.2017.12.059] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2017] [Revised: 12/08/2017] [Accepted: 12/19/2017] [Indexed: 12/22/2022]
Abstract
Infectious bursal disease (IBD) remains a major threat to the poultry industry. Recombinant herpesvirus of turkey (rHVT)-IBD vaccines have been successfully used to induce a protective immune response against IBD. However, the capacity for rHVT-IBD vaccines to induce early protection without detectable antibodies, and the underlying mechanisms mediating specific cell-mediated responses in the early stages following vaccination, have been poorly investigated. Therefore, in this study, specific pathogen-free (SPF) chickens were vaccinated with rHVT-IBD and T-cell subsets were analyzed. Both splenic and circulating CD8+ cell populations increased at 7 days postvaccination (dpv). Next, the expression of adaptive immunity-related genes was analyzed in the spleen and lung of rHVT-IBD-vaccinated chickens. Upregulation of CD8 expression was observed at 7 dpv. Interestingly, a parallel increase in the transcription of granzymes A and K was also detected from 7 dpv. To our knowledge, the latter result is the first to be reported, and it suggests that cytotoxic activity of CD8+ T lymphocytes is activated. In contrast, expression of the innate genes examined remained largely unchanged following vaccination. To further investigate the IBD virus (IBDV)-specific responses triggered by rHVT-IBD vaccination, vaccinated chickens were inoculated with an attenuated IBDV strain with the aim of restimulating induced immune responses in vivo. The expression profiles of various genes associated with adaptive immune responses were subsequently analyzed in lung, spleen, and bursa of Fabricius samples. Significant upregulation of CD4, CD8, perforin, and IFNγ expression were observed in the bursa samples 7 days postinoculation (dpi). In the lung, transcript levels of CD8, granzymes and perforin were also significantly higher in the rHVT-IBD-vaccinated chickens at 7 dpi, thereby suggesting that specific cellular immune responses were activated. Overall, these results support the hypothesis that stimulation of specific CD8+ cell-mediated immunity contributes to the response against IBDV in rHVT-IBD-vaccinated chickens.
Collapse
|
29
|
Liu S, Sun W, Huang X, Zhang W, Jia C, Luo J, Shen Y, El-Ashram S, He C. A Promising Recombinant Herpesvirus of Turkeys Vaccine Expressing PmpD-N of Chlamydia psittaci Based on Elongation Factor-1 Alpha Promoter. Front Vet Sci 2017; 4:221. [PMID: 29376059 PMCID: PMC5763144 DOI: 10.3389/fvets.2017.00221] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2017] [Accepted: 12/04/2017] [Indexed: 12/02/2022] Open
Abstract
The obligate intracellular Gram-negative bacterium Chlamydia psittaci often causes avian chlamydiosis and influenza-like symptoms in humans. However, the commercial subunit C. psittaci vaccine could only provide a partial protection against avian chlamydiosis due to poor cellular immune response. In our previous study, a recombinant herpesvirus of turkeys (HVT)-delivered vaccine against C. psittaci and Marek’s disease based on human cytomegalovirus (CMV) promoter (rHVT-CMV-pmpD) was developed and provided an effective protection against C. psittaci disease with less lesions and reduced chlamydial loads. In this study, we developed another recombinant HVT vaccine expressing the N-terminal fragment of PmpD (PmpD-N) based on human elongation factor-1 alpha (EF-1α) promoter (rHVT-EF-pmpD) by modifying the HVT genome within a bacterial artificial chromosome. The related characterization of rHVT-EF-pmpD was evaluated in vitro in comparison with that of rHVT-CMV-pmpD. The expression of PmpD-N was determined by western blot. Under immunofluorescence microscopy, PmpD-N protein of both two recombinant viruses was located in the cytoplasm and on the cell surface. Growth kinetics of rHVT-EF-pmpD was comparable to that of rHVT-CMV-pmpD, and the growth rate of rHVT-EF-pmpD was apparently higher than that of rHVT-CMV-pmpD on 48, 72, and 120 h postinfection. Macrophages activated by rHVT-EF-pmpD could produce more nitric oxide and IL-6 than that activated by rHVT-CMV-pmpD. In this study, a recombinant HVT vaccine expressing PmpD-N based on EF-1α promoter was constructed successfully, and a further research in vivo was needed to analyze the vaccine efficacy.
Collapse
Affiliation(s)
- Shanshan Liu
- Tongren Polytechnic College, Tongren, China.,National and Local Engineering Research Centre for Separation and Purification Ethnic Chinese Veterinary Herbs, Tongren, China.,Key Lab of Animal Epidemiology and Zoonosis of Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Wei Sun
- Tongren Polytechnic College, Tongren, China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, China
| | | | - Wen Zhang
- Tongren Polytechnic College, Tongren, China.,National and Local Engineering Research Centre for Separation and Purification Ethnic Chinese Veterinary Herbs, Tongren, China
| | - Changqing Jia
- Tongren Polytechnic College, Tongren, China.,National and Local Engineering Research Centre for Separation and Purification Ethnic Chinese Veterinary Herbs, Tongren, China
| | - Jie Luo
- Tongren Polytechnic College, Tongren, China.,National and Local Engineering Research Centre for Separation and Purification Ethnic Chinese Veterinary Herbs, Tongren, China
| | - Yihua Shen
- Tongren Polytechnic College, Tongren, China
| | - Saeed El-Ashram
- School of Life Science and Engineering, Foshan University, Guangdong, China
| | - Cheng He
- Key Lab of Animal Epidemiology and Zoonosis of Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing, China
| |
Collapse
|
30
|
Kapczynski DR, Pantin-Jackwood MJ, Spackman E, Chrzastek K, Suarez DL, Swayne DE. Homologous and heterologous antigenic matched vaccines containing different H5 hemagglutinins provide variable protection of chickens from the 2014 U.S. H5N8 and H5N2 clade 2.3.4.4 highly pathogenic avian influenza viruses. Vaccine 2017; 35:6345-6353. [DOI: 10.1016/j.vaccine.2017.04.042] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Revised: 03/31/2017] [Accepted: 04/18/2017] [Indexed: 12/18/2022]
|
31
|
Ishihara Y, Esaki M, Saitoh S, Sato T, Yasuda A. Development and Evaluation of the Protective Efficacy of Novel Marek's Disease Virus Rispens Vector Vaccines Against Infectious Bursal Disease. Avian Dis 2017; 60:618-27. [PMID: 27610721 DOI: 10.1637/11352-122215-reg.1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Infectious bursal disease (IBD) is a major disease affecting the poultry industry and is caused by infection with IBD virus (IBDV). To develop a novel vaccine to prevent IBD in chickens, recombinant Marek's disease virus Rispens viruses carrying the VP2 gene of IBDV driven by five different promoters (Rispens/IBD) were constructed using homologous recombination and a bacterial artificial chromosome (BAC). Rispens/IBD driven by the chicken beta-actin (Bac) promoter (Rispens/Bac-IBD), Rous sarcoma virus promoter, or simian virus 40 promoter were administered to 1-day-old SPF chicks, and the protective efficacy against IBDV was evaluated by challenging chicks with virulent IBDV. As a result, Rispens/Bac-IBD showed the best protection (87%). Next, we constructed the virus driven by the Bac-derived Coa5 promoter (Rispens/Coa5-IBD) for a secondary in vivo trial using commercial layer chickens since Rispens/Bac-IBD was thought to be genetically unstable. Rispens/Coa5-IBD showed stability in vitro and exhibited better antibody production and protection during challenge against virulent IBDV at both 5 (95%) and 7 wk of age (91%) compared with that of Rispens/Bac-IBD (90% at 5 wk of age and 84% at 7 wk of age). Thus, Rispens/Coa5-IBD may be a novel promising vaccine against IBD and virulent Marek's disease.
Collapse
Affiliation(s)
- Yukari Ishihara
- Ceva Animal Health (Japan Campus), 1-6 Suehiro-cho, Tsurumi-ku, Yokohama 230-0045, Japan
| | - Motoyuki Esaki
- Ceva Animal Health (Japan Campus), 1-6 Suehiro-cho, Tsurumi-ku, Yokohama 230-0045, Japan
| | - Shuji Saitoh
- Ceva Animal Health (Japan Campus), 1-6 Suehiro-cho, Tsurumi-ku, Yokohama 230-0045, Japan
| | - Takanori Sato
- Ceva Animal Health (Japan Campus), 1-6 Suehiro-cho, Tsurumi-ku, Yokohama 230-0045, Japan
| | - Atsushi Yasuda
- Ceva Animal Health (Japan Campus), 1-6 Suehiro-cho, Tsurumi-ku, Yokohama 230-0045, Japan
| |
Collapse
|
32
|
Kapczynski DR, Dorsey K, Chrzastek K, Moraes M, Jackwood M, Hilt D, Gardin Y. Vaccine Protection of Turkeys Against H5N1 Highly Pathogenic Avian Influenza Virus with a Recombinant Turkey Herpesvirus Expressing the Hemagglutinin Gene of Avian Influenza. Avian Dis 2017; 60:413-7. [PMID: 27309280 DOI: 10.1637/11267-090115-reg] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Outbreaks of H5 highly pathogenic avian influenza (HPAI) in commercial poultry are a constant threat to animal health and food supplies. While vaccination can enhance protection and reduce the spread of disease, there is considerable evidence that the level of immunity required for protection varies by subtype and virulence of field virus. In this study, the efficacy of a recombinant turkey herpesvirus (rHVT) vector vaccine expressing the hemagglutinin gene from a clade 2.2 AI virus (A/Swan/Hungary/4999/2006) was evaluated in turkeys for protection against challenge with A/Whooper Swan/Mongolia/L244/2005 H5N1 HPAI clade 2.2. One-day-old turkeys received a single vaccination and were challenged at 4 wk postvaccination with 2 × 10(6) 50% embryo infectious dose per bird. The results demonstrate that following H5N1 HPAI challenge 96% protection was observed in rHVT-AI vaccinated turkeys. The oral and cloacal swabs taken from challenged birds demonstrated that vaccinated birds had lower incidence and titers of viral shedding compared with sham-vaccinated birds. From respiratory and gastrointestinal tracts, there was a greater than 6 log10 reduction in shedding in vaccinated birds as compared with the controls. This study provides support for the use of a commercially available rHVT-AI vaccine to protect turkeys against H5N1 HPAI.
Collapse
Affiliation(s)
- Darrell R Kapczynski
- A Exotic and Emerging Avian Disease Research Unit, U.S. National Poultry Health Research Center, Agricultural Research Service, USDA, 934 College Station Road, Athens, GA 30605
| | | | - Klaudia Chrzastek
- A Exotic and Emerging Avian Disease Research Unit, U.S. National Poultry Health Research Center, Agricultural Research Service, USDA, 934 College Station Road, Athens, GA 30605
| | | | - Mark Jackwood
- C Department of Population Health, College of Veterinary Medicine, The University of Georgia, Athens, GA
| | - Debra Hilt
- C Department of Population Health, College of Veterinary Medicine, The University of Georgia, Athens, GA
| | | |
Collapse
|
33
|
Comparison of different sites in recombinant Marek’s disease virus for the expression of green fluorescent protein. Virus Res 2017; 235:82-85. [DOI: 10.1016/j.virusres.2017.02.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Revised: 02/25/2017] [Accepted: 02/27/2017] [Indexed: 11/21/2022]
|
34
|
Ingrao F, Rauw F, van den Berg T, Lambrecht B. Characterization of two recombinant HVT-IBD vaccines by VP2 insert detection and cell-mediated immunity after vaccination of specific pathogen-free chickens. Avian Pathol 2017; 46:289-299. [PMID: 27897452 DOI: 10.1080/03079457.2016.1265083] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Infectious bursal disease (IBD) is an avian viral disease that causes severe economic losses in the poultry industry worldwide. The live IBD virus (IBDV) has a potential immunosuppressive effect. Currently available IBDV vaccines have shortcomings, prompting the development of safer and more effective vaccination approaches, including the use of the recombinant turkey herpesvirus vaccine expressing the immunogenic structural VP2 protein of IBDV (recombinant HVT (rHVT)-IBD). The objectives of this study were twofold: (i) to develop in vitro assays and molecular tools to detect the VP2 protein and gene and (ii) to evaluate cell-mediated immunity (CMI) induced by rHVT-IBD vaccination of day-old specific pathogen-free chickens. The VP2 protein expressed by rHVT-IBD-infected chicken embryo fibroblasts was detected using the enzyme-linked immunosorbent assay and immunofluorescence. Using molecular techniques, the VP2 gene was detected in various organs, providing a method to monitor vaccine uptake. rHVT-IBD vaccination induced CMI responses in specific pathogen-free chickens at 5 weeks. CMI was detected by measuring chicken interferon-gamma after ex vivo antigenic stimulation of splenocytes. Moreover, our results showed that the enzyme-linked immunospot approach is more sensitive in detecting chicken interferon-gamma than enzyme-linked immunosorbent assay. The tools developed in this study may be useful in the characterization of new-generation recombinant vaccines and the cellular immune response they induce.
Collapse
Affiliation(s)
- Fiona Ingrao
- a Avian Virology & Immunology Unit , Veterinary and Agrochemical Research Centre , Brussels , Belgium
| | - Fabienne Rauw
- a Avian Virology & Immunology Unit , Veterinary and Agrochemical Research Centre , Brussels , Belgium
| | - Thierry van den Berg
- a Avian Virology & Immunology Unit , Veterinary and Agrochemical Research Centre , Brussels , Belgium
| | - Bénédicte Lambrecht
- a Avian Virology & Immunology Unit , Veterinary and Agrochemical Research Centre , Brussels , Belgium
| |
Collapse
|
35
|
Kurukulasuriya S, Ahmed KA, Ojkic D, Gunawardana T, Goonewardene K, Gupta A, Chow-Lockerbie B, Popowich S, Willson P, Tikoo SK, Gomis S. Modified live infectious bursal disease virus (IBDV) vaccine delays infection of neonatal broiler chickens with variant IBDV compared to turkey herpesvirus (HVT)-IBDV vectored vaccine. Vaccine 2017; 35:882-888. [PMID: 28089549 DOI: 10.1016/j.vaccine.2017.01.005] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Revised: 12/24/2016] [Accepted: 01/04/2017] [Indexed: 11/18/2022]
Abstract
Chickens are commonly processed around 35-45days of age in broiler chicken industry hence; diseases that occur at a young age are of paramount economic importance. Early age infection with infectious bursal disease virus (IBDV) results in long-lasting immunosuppression and profound economic losses. To our knowledge, this is the first study comparing the protection efficacy of modified live (MdLV) IBDV and herpesvirus turkey (HVT)-IBDV vaccines against early age variant IBDV (varIBDV) infection in chicks. Experiments were carried out in IBDV maternal antibody (MtAb) positive chicks (n=330), divided into 6 groups (n=50-60/group), namely Group 1 (saline), Group 2 (saline+varIBDV), Group 3 (HVT-IBDV), Group 4 (HVT-IBDV+varIBDV), Group 5 (MdLV) and Group 6 (MdLV+varIBDV). HVT-IBDV vaccination was given via the in ovo route to 18-day-old embryonated eggs. MdLV was administered via the subcutaneous route in day-old broilers. Group 2, Group 4 and Group 6 were orally challenged with varIBDV (SK-09, 3×103 EID50) at day 6 post-hatch. IBDV seroconversion, bursal weight to body weight ratio (BBW) and bursal histopathology were assessed at 19 and 35days of age. Histopathological examination at day 19 revealed that varIBDV-SK09 challenge caused severe bursal atrophy and lower BBW in HVT-IBDV but not in MdLV vaccinated chicks. However by day 35, all challenged groups showed bursal atrophy and seroconversion. Interestingly, RT-qPCR analysis after varIBDV-SK09 challenge demonstrated an early (9days of age) and significantly high viral load (∼5744 folds) in HVT-IBDV vaccinated group vs unvaccinated challenged group (∼2.25 folds). Furthermore, flow cytometry analysis revealed inhibition of cytotoxic CD8+ T-cell response (CD44-downregulation) and decreased splenic lymphocytes counts in chicks after HVT-IBDV vaccination. Overall, our data suggest that MdLV delays varIBDV pathogenesis, whereas, HVT-IBDV vaccine is potentially immunosuppressive, which may increase the risk of early age varIBDV infection in broilers.
Collapse
MESH Headings
- Animals
- Animals, Newborn
- Antibodies, Viral/biosynthesis
- Birnaviridae Infections/immunology
- Birnaviridae Infections/pathology
- Birnaviridae Infections/prevention & control
- Birnaviridae Infections/virology
- Bursa of Fabricius/drug effects
- Bursa of Fabricius/immunology
- Bursa of Fabricius/pathology
- Bursa of Fabricius/virology
- Chick Embryo
- Chickens/immunology
- Chickens/virology
- Herpesvirus 1, Meleagrid/drug effects
- Herpesvirus 1, Meleagrid/immunology
- Herpesvirus 1, Meleagrid/pathogenicity
- Infectious bursal disease virus/drug effects
- Infectious bursal disease virus/immunology
- Infectious bursal disease virus/pathogenicity
- Marek Disease/immunology
- Marek Disease/pathology
- Marek Disease/prevention & control
- Marek Disease/virology
- Organ Size/drug effects
- Poultry Diseases/immunology
- Poultry Diseases/pathology
- Poultry Diseases/prevention & control
- Poultry Diseases/virology
- T-Lymphocytes, Cytotoxic/drug effects
- T-Lymphocytes, Cytotoxic/immunology
- T-Lymphocytes, Cytotoxic/virology
- Time Factors
- Vaccination
- Vaccines, Live, Unattenuated
- Viral Vaccines/administration & dosage
- Zygote/drug effects
Collapse
Affiliation(s)
- Shanika Kurukulasuriya
- Department of Veterinary Pathology, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, SK S7N 5B4, Canada
| | - Khawaja Ashfaque Ahmed
- Department of Veterinary Pathology, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, SK S7N 5B4, Canada
| | - Davor Ojkic
- Animal Health Laboratory, University of Guelph, P.O. Box 3612, Guelph, ON N1H 6R8, Canada
| | - Thushari Gunawardana
- Department of Veterinary Pathology, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, SK S7N 5B4, Canada
| | - Kalhari Goonewardene
- Department of Veterinary Pathology, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, SK S7N 5B4, Canada
| | - Ashish Gupta
- Department of Veterinary Pathology, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, SK S7N 5B4, Canada
| | - Betty Chow-Lockerbie
- Department of Veterinary Pathology, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, SK S7N 5B4, Canada
| | - Shelly Popowich
- Department of Veterinary Pathology, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, SK S7N 5B4, Canada
| | - Philip Willson
- Canadian Centre for Health and Safety in Agriculture, University of Saskatchewan, Saskatoon, SK S7N 5E5, Canada
| | - Suresh K Tikoo
- Vaccinology and Immunotherapeutic Program, School of Public Health, University of Saskatchewan, Saskatoon, SK S7N 5E3, Canada; Vaccine and Infectious Disease Organization, 120 Veterinary Road, University of Saskatchewan, Saskatoon, SK S7N 5E3, Canada
| | - Susantha Gomis
- Department of Veterinary Pathology, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, SK S7N 5B4, Canada.
| |
Collapse
|
36
|
Li K, Liu Y, Liu C, Gao L, Zhang Y, Cui H, Gao Y, Qi X, Zhong L, Wang X. Recombinant Marek's disease virus type 1 provides full protection against very virulent Marek's and infectious bursal disease viruses in chickens. Sci Rep 2016; 6:39263. [PMID: 27982090 PMCID: PMC5159867 DOI: 10.1038/srep39263] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2016] [Accepted: 11/22/2016] [Indexed: 11/24/2022] Open
Abstract
Marek’s disease virus (MDV) is a preferred vector in the construction of recombinant vaccines. However, bivalent vaccine based on MDV that confers full protection against both very virulent Marek’s and infectious bursal disease virus (IBDV) infections in chickens has not been produced. Here we developed a system utilizing overlapping fosmid DNAs transfection that rescues an MDV type 1 (MDV1) vaccine strain. Using this system, we inserted the IBDV VP2 gene at MDV1 genome sites UL41, US10 and US2. The VP2 protein was stably expressed in the recombinant MDV-infected cells and self-assembled into IBDV subviral particles. Insertion of the VP2 gene did not affect the replication phenotype of MDV in cell cultures, nor did it increase the virulence of the MDV vaccine strain in chickens. After challenge with very virulent IBDV, r814US2VP2 conferred full protection, whereas r814UL41VP2 and r814US10VP2 provided partial or no protection. All the three recombinant vaccines provided full protection against very virulent MDV challenge in chickens. These results demonstrated that r814US2VP2 could be used as a promising bivalent vaccine against both Marek’s and infectious bursal diseases in chickens.
Collapse
Affiliation(s)
- Kai Li
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150069, P.R. China
| | - Yongzhen Liu
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150069, P.R. China
| | - Changjun Liu
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150069, P.R. China
| | - Li Gao
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150069, P.R. China
| | - Yanping Zhang
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150069, P.R. China
| | - Hongyu Cui
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150069, P.R. China
| | - Yulong Gao
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150069, P.R. China
| | - Xiaole Qi
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150069, P.R. China
| | - Li Zhong
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150069, P.R. China
| | - Xiaomei Wang
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150069, P.R. China
| |
Collapse
|
37
|
Li K, Liu Y, Liu C, Gao L, Gao Y, Zhang Y, Cui H, Qi X, Zhong L, Wang X. Evaluation of two strains of Marek's disease virus serotype 1 for the development of recombinant vaccines against very virulent infectious bursal disease virus. Antiviral Res 2016; 139:153-160. [PMID: 27908832 DOI: 10.1016/j.antiviral.2016.11.024] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Revised: 11/24/2016] [Accepted: 11/24/2016] [Indexed: 11/20/2022]
Abstract
Attenuated strains of Marek's disease virus serotype 1 (MDV1), and the closely related herpesvirus of turkeys, are among the most potent vectors for development of recombinant vaccines for poultry. To investigate the effects of MDV1 strain characteristics on the protective efficacy of the recombinant vaccines, we developed two recombinant MDV1 vaccines for expressing the VP2 gene of infectious bursal disease virus (IBDV) based on two different MDV1 strains, the attenuated strain 814 and the Meq gene-deleted recombinant MDV1 strain rLMS△Meq, as the viral vectors. The r814-VP2 virus based on the 814 strain exhibited higher replication efficiency in cell culture while lower viral titers in chickens, compared to rLMS△Meq-VP2 derived from the rLMS△Meq strain. Further studies indicated that r814-VP2 produced higher levels of VP2 protein in cells and elicited stronger immune responses against IBDV in chickens than rLMS△Meq-VP2. After IBDV challenge, rLMS△Meq-VP2 provided 50% protection against mortality, and the birds that survived developed bursal atrophy and gross lesions. In contrast, r814-VP2 conferred complete protection not only against development of clinical signs and mortality, but also against the formation of bursal lesions. The results indicate that different MDV1 vector influences the protective efficacy of recombinant MDV1 vaccines. The r814-VP2 has the potential to serve as a bivalent vaccine against two important lethal pathogens of chickens.
Collapse
Affiliation(s)
- Kai Li
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150069, PR China
| | - Yongzhen Liu
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150069, PR China
| | - Changjun Liu
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150069, PR China
| | - Li Gao
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150069, PR China
| | - Yulong Gao
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150069, PR China
| | - Yanping Zhang
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150069, PR China
| | - Hongyu Cui
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150069, PR China
| | - Xiaole Qi
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150069, PR China
| | - Li Zhong
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150069, PR China
| | - Xiaomei Wang
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150069, PR China.
| |
Collapse
|
38
|
Marek's disease vaccines: Current status, and strategies for improvement and development of vector vaccines. Vet Microbiol 2016; 206:113-120. [PMID: 28038868 DOI: 10.1016/j.vetmic.2016.11.024] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2016] [Revised: 11/19/2016] [Accepted: 11/23/2016] [Indexed: 11/24/2022]
Abstract
Marek's disease (MD) is a lymphoproliferative viral disease of chickens, which has been controlled through vaccination since 1969. MD vaccines protect against tumors but do not provide sterilizing immunity, and thus it is generally believed that their use has contributed to increase virulence of field strains with the ability to cause MD in vaccinated chickens. Traditional methods of developing vaccines, like cell culture attenuation, have proved unsuccessful for the development of improved vaccines to protect against highly virulent MD virus (MDV) field strains. With the advent of recombinant DNA technology, it is now possible to study MDV gene function and develop rational vaccines that protect against highly pathogenic strains. In addition, the long term protection conferred by MD vaccines, their excellent safety profile, their efficacy when administered early (at hatch or in ovo), and their ability to overcome maternal antibodies, has made MDV an excellent candidate vector to protect not only against MD but also against other important viral poultry diseases. In this review we will discuss the current status of MD vaccines and their use as vector vaccines to control important viral poultry diseases.
Collapse
|
39
|
Li K, Liu Y, Liu C, Gao L, Zhang Y, Gao Y, Cui H, Qi X, Zhong L, Wang X. Effects of different promoters on the protective efficacy of recombinant Marek's disease virus type 1 expressing the VP2 gene of infectious bursal disease virus. Vaccine 2016; 34:5744-5750. [PMID: 27742216 DOI: 10.1016/j.vaccine.2016.10.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Revised: 09/28/2016] [Accepted: 10/03/2016] [Indexed: 11/15/2022]
Abstract
The vaccine efficacy of recombinant viruses can be influenced by many factors. Accordingly, the activity of promoters has been one of the major factors affecting the antigen expression and protection rate. In the present study, two recombinant Marek's disease virus type 1 (MDV1) vaccines containing the VP2 gene of infectious bursal disease virus (IBDV) under control of different promoters were generated from overlapping fosmid DNAs. The rMDV-Pec-VP2 virus containing the VP2 gene under control of the Pec promoter (CMV enhancer and chicken β-actin chimera promoter) demonstrated higher VP2 expression and stronger antibody response against IBDV in chickens than the rMDV-CMV-VP2 virus using the CMV promoter. After IBDV lethal challenge in specific-pathogen-free chickens, rMDV-Pec-VP2 provided complete protection against developing mortality, clinical signs, and the formation of bursal lesions, which was better than that provided by rMDV-CMV-VP2. Our findings indicate that the protective efficacy of the recombinant MDV1 vaccine against IBDV highly correlates with VP2 expression. This recombinant MDV1 vaccine expressing VP2 could have significant potential as a bivalent vaccine against both virulent IBDV and MDV infections in chickens.
Collapse
Affiliation(s)
- Kai Li
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150069, PR China
| | - Yongzhen Liu
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150069, PR China
| | - Changjun Liu
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150069, PR China
| | - Li Gao
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150069, PR China
| | - Yanping Zhang
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150069, PR China
| | - Yulong Gao
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150069, PR China
| | - Hongyu Cui
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150069, PR China
| | - Xiaole Qi
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150069, PR China
| | - Li Zhong
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150069, PR China
| | - Xiaomei Wang
- Avian Immunosuppressive Diseases Division, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150069, PR China.
| |
Collapse
|
40
|
Camilotti E, Moraes LB, Furian TQ, Borges KA, Moraes HLS, Salle CTP. Infectious Bursal Disease: Pathogenicity and Immunogenicity of Vaccines. BRAZILIAN JOURNAL OF POULTRY SCIENCE 2016. [DOI: 10.1590/1806-9061-2015-0148] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
41
|
Construction of recombinant baculovirus vaccines for Newcastle disease virus and an assessment of their immunogenicity. J Biotechnol 2016; 231:201-211. [PMID: 27015979 DOI: 10.1016/j.jbiotec.2016.03.037] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2015] [Revised: 03/18/2016] [Accepted: 03/21/2016] [Indexed: 01/09/2023]
Abstract
Newcastle disease (ND) is a lethal avian infectious disease caused by Newcastle disease virus (NDV) which poses a substantial threat to China's poultry industry. Conventional live vaccines against NDV are available, but they can revert to virulent strains and do not protect against mutant strains of the virus. Therefore, there is a critical unmet need for a novel vaccine that is safe, efficacious, and cost effective. Here, we designed novel recombinant baculovirus vaccines expressing the NDV F or HN genes. To optimize antigen expression, we tested the incorporation of multiple regulatory elements including: (1) truncated vesicular stomatitis virus G protein (VSV-GED), (2) woodchuck hepatitis virus post-transcriptional regulatory element (WPRE), (3) inverted terminal repeats (ITRs) of adeno-associated virus (AAV Serotype II), and (4) the cytomegalovirus (CMV) promoter. To test the in vivo efficacy of the viruses, we vaccinated chickens with each construct and characterized the cellular and humoral immune response to challenge with virulent NDV (F48E9). All of the vaccine constructs provided some level of protection (62.5-100% protection). The F-series of vaccines provided a greater degree of protection (87.5-100%) than the HN-series (62.5-87.5%). While all of the vaccines elicited a robust cellular and humoral response subtle differences in efficacy were observed. The combination of the WPRE and VSV-GED regulatory elements enhanced the immune response and increased antigen expression. The ITRs effectively increased the length of time IFN-γ, IL-2, and IL-4 were expressed in the plasma. The F-series elicited higher titers of neutralizing antibody and NDV-specific IgG. The baculovirus system is a promising platform for NDV vaccine development that combines the immunostimulatory benefits of a recombinant virus vector with the non-replicating benefits of a DNA vaccine.
Collapse
|
42
|
Lee HJ, Kim JY, Kye SJ, Seul HJ, Jung SC, Choi KS. Efficient self-assembly and protective efficacy of infectious bursal disease virus-like particles by a recombinant baculovirus co-expressing precursor polyprotein and VP4. Virol J 2015; 12:177. [PMID: 26502988 PMCID: PMC4621879 DOI: 10.1186/s12985-015-0403-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Accepted: 10/14/2015] [Indexed: 12/17/2022] Open
Abstract
Background Virus-like particle (VLP) technology is considered one of the most promising approaches in animal vaccines, due to the intrinsic immunogenic properties as well as high safety profile of VLPs. In this study, we developed a VLP vaccine against infectious bursal disease virus (IBDV), which causes morbidity and mortality in chickens, by expressing a baculovirus in insect cells. Methods To improve the self-proteolytic processing of precursor polyprotein (PP), we constructed a recombinant baculovirus transfer vector that co-expresses PP and the VP4 protease gene of IBDV. Results Expression and VLP assembly of recombinant proteins and antigenicity of the VLP were examined by Western blotting, ELISA, and transmission electron microscopy. In animal experiments, vaccination with the recombinant VLP induced strong and uniform humoral immunity and provided complete protection against challenge with very virulent (vv) IBDV in SPF chickens (n = 12). As determined by the bursa of Fabricius (BF)/body weight (B/BW) ratio, the protection against post-challenge bursal atrophy was significantly higher (P < 0.001) in VLP-vaccinated birds than in non-vaccinated controls. Conclusions Since the protective efficacy of the VLP vaccine was comparable to that of a commercially available inactivated vaccine, the recombinant VLP merits further investigation as an alternative means of protection against vvIBD.
Collapse
Affiliation(s)
- Hyun-Jeong Lee
- Avian Disease Division, Animal and Plant Quarantine Agency, 175 Anyangro, Anyang, Gyeonggi, 430-757, Republic of Korea.
| | - Ji-Ye Kim
- Avian Disease Division, Animal and Plant Quarantine Agency, 175 Anyangro, Anyang, Gyeonggi, 430-757, Republic of Korea.
| | - Soo-Jeong Kye
- Avian Disease Division, Animal and Plant Quarantine Agency, 175 Anyangro, Anyang, Gyeonggi, 430-757, Republic of Korea.
| | - Hee-Jung Seul
- Avian Disease Division, Animal and Plant Quarantine Agency, 175 Anyangro, Anyang, Gyeonggi, 430-757, Republic of Korea.
| | - Suk-Chan Jung
- Avian Disease Division, Animal and Plant Quarantine Agency, 175 Anyangro, Anyang, Gyeonggi, 430-757, Republic of Korea.
| | - Kang-Seuk Choi
- Avian Disease Division, Animal and Plant Quarantine Agency, 175 Anyangro, Anyang, Gyeonggi, 430-757, Republic of Korea.
| |
Collapse
|
43
|
Ge J, An Q, Song S, Gao D, Ping W. Construction of Recombinant Baculoviruses Expressing Infectious Bursal Disease Virus Main Protective Antigen and Their Immune Effects on Chickens. PLoS One 2015; 10:e0132993. [PMID: 26167907 PMCID: PMC4500495 DOI: 10.1371/journal.pone.0132993] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2014] [Accepted: 06/22/2015] [Indexed: 11/19/2022] Open
Abstract
In order to overcome the limitations of conventional vaccines for infectious bursal disease virus (IBDV), we constructed recombinant dual expression system baculoviruses with VP2 and VP2/4/3, the main protective antigens of IBDV. We compared the immune effects of the baculoviruses in avian cells and detected their control effects on chickens with infectious bursal disease. We used Western blot analysis to measure VP2 protein and VP2/4/3 polyprotein expression in avian cells infected using the Bac-to-Bac baculovirus expression system. The recombinant baculoviruses were used to vaccinate specific pathogen-free chickens, which produced specific protective antibodies and strong cellular immune responses. The results of the virus challenge experiment revealed that the protective efficiency of VP2 and VP2/4/3 virus vaccines were 95.8% and 100%, respectively, both of which were higher than the vaccine group (87.5%), and significantly higher than the control group (50%). The results demonstrated that the immune effect of BV-S-ITRs-VP2/4/3 was superior to that of BV-S-ITRs-VP2. Compared with traditional attenuated vaccine and genetically engineered live vector vaccine, the dual expression viral vector vaccine has good bio-safety. The results of this study provide a foundation for the further development of poultry vaccines, in addition to providing a useful reference for developing non-replicating live vaccines against other viral diseases.
Collapse
Affiliation(s)
- Jingping Ge
- Key Laboratory of Microbiology, College of Life Science, Heilongjiang University, Harbin 150080, China
| | - Qi An
- Key Laboratory of Microbiology, College of Life Science, Heilongjiang University, Harbin 150080, China
| | - Shanshan Song
- Key Laboratory of Microbiology, College of Life Science, Heilongjiang University, Harbin 150080, China
| | - Dongni Gao
- Key Laboratory of Microbiology, College of Life Science, Heilongjiang University, Harbin 150080, China
| | - Wenxiang Ping
- Key Laboratory of Microbiology, College of Life Science, Heilongjiang University, Harbin 150080, China
- * E-mail:
| |
Collapse
|
44
|
Deb R, Dey S, Madhan Mohan C, Gaikwad S, Kamble N, Khulape SA, Gupta SK, Maity HK, Pathak DC. Development and evaluation of a Salmonella typhimurium flagellin based chimeric DNA vaccine against infectious bursal disease of poultry. Res Vet Sci 2015; 102:7-14. [PMID: 26412511 DOI: 10.1016/j.rvsc.2015.07.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2015] [Revised: 06/27/2015] [Accepted: 07/05/2015] [Indexed: 02/07/2023]
Abstract
Infectious bursal disease (IBD) is an acute immunosuppressive disease of young chicks, caused by a double-stranded RNA virus. VP2 being the major capsid protein of the virus is an ideal vaccine candidate possessing the neutralizing epitopes. The present study involves the use of flagellin (fliC) as a genetic adjuvant to improve the immune response of VP2 based DNA vaccine against IBD. Our findings revealed that birds immunized with plasmid pCIVP2fliC showed robust immune response than pCIVP2 immunized groups. Further, challenge study proved that genetic fusion of fliC and VP2 can provide a comparatively higher level of protection against vvIBDV challenge in chickens than VP2 alone. These results thus indicate that Salmonella flagellin could enhance the immune responses and protection efficacy of a DNA vaccine candidate against IBDV infection in chickens, highlighting the potential of flagellin as a genetic adjuvant in the prevention of vvIBDV infection.
Collapse
Affiliation(s)
- Rajib Deb
- Recombinant DNA Laboratory, Division of Veterinary Biotechnology, Indian Veterinary Research Institute, Izatnagar, Bareilly 243122, UP, India.
| | - Sohini Dey
- Recombinant DNA Laboratory, Division of Veterinary Biotechnology, Indian Veterinary Research Institute, Izatnagar, Bareilly 243122, UP, India
| | - C Madhan Mohan
- Recombinant DNA Laboratory, Division of Veterinary Biotechnology, Indian Veterinary Research Institute, Izatnagar, Bareilly 243122, UP, India
| | - Satish Gaikwad
- Recombinant DNA Laboratory, Division of Veterinary Biotechnology, Indian Veterinary Research Institute, Izatnagar, Bareilly 243122, UP, India
| | - Nitin Kamble
- Recombinant DNA Laboratory, Division of Veterinary Biotechnology, Indian Veterinary Research Institute, Izatnagar, Bareilly 243122, UP, India
| | - Sagar A Khulape
- Recombinant DNA Laboratory, Division of Veterinary Biotechnology, Indian Veterinary Research Institute, Izatnagar, Bareilly 243122, UP, India
| | - Shishir Kumar Gupta
- Recombinant DNA Laboratory, Division of Veterinary Biotechnology, Indian Veterinary Research Institute, Izatnagar, Bareilly 243122, UP, India
| | - Hemanta Kumar Maity
- Recombinant DNA Laboratory, Division of Veterinary Biotechnology, Indian Veterinary Research Institute, Izatnagar, Bareilly 243122, UP, India
| | - Dinesh Chandra Pathak
- Recombinant DNA Laboratory, Division of Veterinary Biotechnology, Indian Veterinary Research Institute, Izatnagar, Bareilly 243122, UP, India
| |
Collapse
|
45
|
Ouyang W, Wang YS, Du XN, Liu HJ, Zhang HB. gga-miR-9* inhibits IFN production in antiviral innate immunity by targeting interferon regulatory factor 2 to promote IBDV replication. Vet Microbiol 2015; 178:41-9. [PMID: 25975521 DOI: 10.1016/j.vetmic.2015.04.023] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2014] [Revised: 04/25/2015] [Accepted: 04/27/2015] [Indexed: 01/25/2023]
Abstract
MicroRNAs (miRNAs) are small non-coding RNAs that contribute to the repertoire of host-pathogen interactions during viral infections. In the current study, miRNA analysis showed that a panel of microRNAs, including gga-miR-9*, were markedly upregulated in specific-pathogen-free (SPF) chickens upon infection with infectious bursal disease virus (IBDV); however, the biological function of gga-miR-9* during viral infection remains unknown. Using a TCID50 assay, it was found that ectopic expression of gga-miR-9* significantly promoted IBDV replication. In turn, gga-miR-9* negatively regulated IBDV-triggered type I IFN production, thus promoting IBDV replication in DF-1 cells. Bioinformatics analysis indicates that the 3' untranslated region (UTR) of interferon regulatory factor 2 (IRF2) has two putative binding sites for gga-miR-9*. Targeting of IRF2 3'UTR by gga-miR-9* was determined by luciferase assay. Functional overexpression of gga-miR-9*, using gga-miR-9* mimics, inhibited IRF2 mRNA and protein expression. Transfection of the gga-miR-9* inhibitor abolished the suppression of IRF2 protein expression. Furthermore, IRF2 knockdown mediated the enhancing effect of gga-miR-9* on the type I IFN-mediated antiviral response. These findings indicate that inducible gga-miR-9* feedback negatively regulates the host antiviral innate immune response by suppressing type I IFN production via targeting IRF2.
Collapse
Affiliation(s)
- Wei Ouyang
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China; Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences/Key Laboratory of Veterinary Biological Engineering and Technology, Ministry of Agriculture/National Center for Engineering Research of Veterinary Bio-products, Nanjing 210014, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou 225009, China
| | - Yong-shan Wang
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences/Key Laboratory of Veterinary Biological Engineering and Technology, Ministry of Agriculture/National Center for Engineering Research of Veterinary Bio-products, Nanjing 210014, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou 225009, China.
| | - Xi-ning Du
- Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences/Key Laboratory of Veterinary Biological Engineering and Technology, Ministry of Agriculture/National Center for Engineering Research of Veterinary Bio-products, Nanjing 210014, China
| | - Hua-jie Liu
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China; Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences/Key Laboratory of Veterinary Biological Engineering and Technology, Ministry of Agriculture/National Center for Engineering Research of Veterinary Bio-products, Nanjing 210014, China
| | - Hai-bin Zhang
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China.
| |
Collapse
|
46
|
Rauw F, Van Borm S, Welby S, Ngabirano E, Gardin Y, Palya V, Lambrecht B. Quantification of rHVT-F genome load in feather follicles by specific real-time qPCR as an indicator of NDV-specific humoral immunity induced by day-old vaccination in SPF chickens. Avian Pathol 2015; 44:154-61. [PMID: 25687165 DOI: 10.1080/03079457.2015.1018869] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
The purpose of this study was to look for a reliable molecular method for confirmation of uptake of recombinant turkey herpesvirus vaccine against Newcastle disease (rHVT-F) and for use as a valuable prediction tool of Newcastle disease virus (NDV)-specific immune response in chickens deprived of maternally derived antibody (MDA). A quantitative real-time polymerase chain reaction (real-time qPCR) specific to rHVT-F was developed. The method was applied to various tissue samples taken from specific pathogen free (SPF) chickens experimentally inoculated at day-old with one dose of rHVT-F vaccine over a 6-week period. Among the tested tissues, the rHVT-F vaccine was detected predominantly in the bursa of Fabricius (BF) and the lung for the first week, followed by a progressive decline from 9 days onwards. Then, an increase of genome load was observed in the feather follicles (FF) with a peak at 2 weeks, rising to a level almost 10(3)-fold greater than in the other tissues. Importantly, the rHVT-F genome load in FF appeared to be strongly correlated to the humoral immunity specific to NDV as evaluated by haemagglutination inhibition (HI) test and NDV-specific IgG, IgM and IgA ELISAs. This is the first report of quantification of rHVT-F vaccine in FF and its correlation with the induction of ND-specific immune response in chickens with no MDA. Our data indicate that the application of this real-time qPCR assay on FF samples taken from chickens in the field may be used to confirm rHVT-F vaccine administration and uptake with the important added benefit of offering a non-disruptive sampling procedure.
Collapse
Affiliation(s)
- F Rauw
- a Veterinary and Agrochemical Research Centre (VAR) , Ukkel , Belgium
| | | | | | | | | | | | | |
Collapse
|
47
|
Serological Evaluation of Turkey Herpesvirus Vector Vaccines Expressing the Hemagglutinin Gene of Avian Influenza Virus H5 Subtype under Three Different Promoters. J Poult Sci 2015. [DOI: 10.2141/jpsa.0140096] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
|
48
|
Ma C, Zhang Z, Zhao P, Duan L, Zhang Y, Zhang F, Chen W, Cui Z. Comparative transcriptional activity of five promoters in BAC-cloned MDV for the expression of the hemagglutinin gene of H9N2 avian influenza virus. J Virol Methods 2014; 206:119-27. [DOI: 10.1016/j.jviromet.2014.05.023] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2013] [Revised: 04/22/2014] [Accepted: 05/23/2014] [Indexed: 10/25/2022]
|
49
|
Transcriptional activity comparison of different sites in recombinant Marek's disease virus for the expression of the H9N2 avian influenza virus hemagglutinin gene. J Virol Methods 2014; 207:138-45. [PMID: 25034124 DOI: 10.1016/j.jviromet.2014.07.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2014] [Revised: 07/06/2014] [Accepted: 07/08/2014] [Indexed: 11/23/2022]
Abstract
Over the last two decades, much attention has been paid to MDV-vectored recombinant vaccines. Many factors have influenced their protective efficacy, and insertion site has been among the main influential factors for the expression of foreign genes in recombinant Marek's disease virus (rMDV). To compare the transcriptional activity of different sites of rMDV, an H9N2 avian influenza virus hemagglutinin gene (AIV-H9N2-HA) expression cassette that used the bi-directional promoter of serotype 1 MDV (MDV1) in the 1.8kb RNA transcript direction (p1.8kb) as a promoter was inserted into 4 different regions of MDV using the bacterial artificial chromosome (BAC) vector and FLP/FRT recombination technique. The insertion regions included 3 of its own sites (US2, US10 and one of Meq genes) in the MDV genome and a foreign site (gpt gene) in the BAC vector. Quantitative PCR and enzyme-linked immunosorbent assay (ELISA) were used to analyze and compare the H9N2-HA expression levels of these different rMDVs both at the mRNA level and at the protein level. The results indicated that among the four tested insertion regions, the HA expression cassette in the US2 region demonstrated the highest activity, followed by that in the Meq region, which was almost equal to that of US10. Further, the expression cassette had the lowest activity in the foreign region gpt gene. The above data could be useful for choosing proper recombinant insertion regions in the construction of rMDV to express different foreign genes, and it is a prerequisite for developing effective MDV-vectored recombinant vaccines.
Collapse
|
50
|
Zhang Z, Chen W, Ma C, Zhao P, Duan L, Zhang F, Sun A, Li Y, Su H, Li S, Cui H, Cui Z. Construction of recombinant Marek's disease virus (MDV) lacking the meq oncogene and co-expressing AIV-H9N2 HA and NA genes under control of exogenous promoters. J Biotechnol 2014; 181:45-54. [DOI: 10.1016/j.jbiotec.2014.03.032] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2014] [Revised: 03/24/2014] [Accepted: 03/27/2014] [Indexed: 11/30/2022]
|