1
|
Hou C, Ni R, Zhao L, Tian M, Long X, Lei C, Wang H, Yang X. Recombinant chimpanzee adenovirus expressing spike protein protects chickens against infectious bronchitis virus. Int J Biol Macromol 2024; 255:128105. [PMID: 37981286 DOI: 10.1016/j.ijbiomac.2023.128105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 10/16/2023] [Accepted: 11/13/2023] [Indexed: 11/21/2023]
Abstract
Infectious bronchitis (IB) is an acute and highly contagious disease caused by avian infectious bronchitis virus (IBV), resulting in significant economic losses in the global poultry industry. In this study, we utilized a replication-incompetent adenovirus vector derived from chimpanzees for the first time to express the S gene of IBV. The adenovirus was successfully rescued and demonstrated convenient production, good growth performance, and stability on HEK293 A cells. Morphologically, the recombinant adenovirus (named PAD-S) appeared normal under transmission electron microscopy, and efficient expression of the exogenous gene was confirmed through immunofluorescence analysis and immunoblotting. Administration of PAD-S via ocular and nasal routes induced a strong immune response in the chicken population, as evidenced by specific antibody and cytokine measurements. PAD-S was unable to replicate within chickens and showed low pre-existing immunity, demonstrating high safety and environmental friendliness. The robust immune response triggered by PAD-S immunization effectively suppressed viral replication in various tissues, alleviating clinical symptoms and tissue damage, thus providing complete protection against viral challenges in the chicken population. In conclusion, this study successfully developed an IBV candidate vaccine strain that possesses biosafety, high protective efficacy, and ease of production.
Collapse
Affiliation(s)
- Chengyao Hou
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan, People's Republic of China; Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, College of Life Sciences, Sichuan University, Chengdu, Sichuan, People's Republic of China
| | - Ruiqi Ni
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan, People's Republic of China; Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, College of Life Sciences, Sichuan University, Chengdu, Sichuan, People's Republic of China
| | - Lijun Zhao
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan, People's Republic of China; Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, College of Life Sciences, Sichuan University, Chengdu, Sichuan, People's Republic of China
| | - Mingyue Tian
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan, People's Republic of China; Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, College of Life Sciences, Sichuan University, Chengdu, Sichuan, People's Republic of China
| | - Xuelin Long
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan, People's Republic of China; Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, College of Life Sciences, Sichuan University, Chengdu, Sichuan, People's Republic of China
| | - Changwei Lei
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan, People's Republic of China; Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, College of Life Sciences, Sichuan University, Chengdu, Sichuan, People's Republic of China
| | - Hongning Wang
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan, People's Republic of China; Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, College of Life Sciences, Sichuan University, Chengdu, Sichuan, People's Republic of China
| | - Xin Yang
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan, People's Republic of China; Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, College of Life Sciences, Sichuan University, Chengdu, Sichuan, People's Republic of China.
| |
Collapse
|
2
|
Weng W, Liu Q, Xue W, Wang H, Fang S, Sun Y, Tan L, Song C, Qiu X, Liu W, Ding C, Liao Y. Characterization of the Protective Efficacy Against QX Strain of a Recombinant Infectious Bronchitis Virus With H120 Backbone and QX Spike Gene. Front Microbiol 2022; 13:883642. [PMID: 35783402 PMCID: PMC9247577 DOI: 10.3389/fmicb.2022.883642] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 05/02/2022] [Indexed: 11/20/2022] Open
Abstract
Infectious bronchitis virus (IBV) has been prevalent in chicken farms for many years, and its control relies on extensive vaccine administration. The continuous emergence of new variants and the low cross-protection efficiency prompt the development of new vaccines. In this study, we develop a reverse genetics technique based on the classical vaccine strain H120 genome, via in vitro ligation method. Using the H120 genome as the backbone, we constructed the recombinant virus rH120-QX(S) by replacing the H120 S gene with the QX S gene, a prevalent strain in China. Biological characteristics of the rH120-QX(S) virus, such as 50% egg lethal dose (ELD50), 50% egg infectious dose (EID50), dwarf embryo, growth curve, and genetic stability, are measured, which are comparable to the parental virus H120. There are no clinical symptoms and tissue lesions in the trachea and kidney in the rH120-QX(S)-infected specific-pathogen-free (SPF) chickens, demonstrating that this recombinant virus does not confer pathogenicity. Furthermore, protection studies show that there is 100% homologous protection of rH120-QX(S) to the virulent QX strain, as shown by the absence of clinical signs and no lethality. Taken together, our results demonstrate that swapping the S gene onto the H120 genetic backbone is a precise and effective way to produce genetically defined IBV vaccine candidates.
Collapse
Affiliation(s)
- Wenlian Weng
- Department of Avian Diseases, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, China
| | - Qingyan Liu
- Department of Avian Diseases, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, China
- College of Agriculture, College of Animal Sciences, Yangtze University, Jingzhou, China
| | - Wenxiang Xue
- Department of Avian Diseases, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, China
| | - Huan Wang
- Department of Avian Diseases, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, China
| | - Shouguo Fang
- College of Agriculture, College of Animal Sciences, Yangtze University, Jingzhou, China
| | - Yingjie Sun
- Department of Avian Diseases, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, China
| | - Lei Tan
- Department of Avian Diseases, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, China
| | - Cuiping Song
- Department of Avian Diseases, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, China
| | - Xusheng Qiu
- Department of Avian Diseases, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, China
| | - Weiwei Liu
- Department of Avian Diseases, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, China
| | - Chan Ding
- Department of Avian Diseases, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, China
| | - Ying Liao
- Department of Avian Diseases, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, China
- *Correspondence: Ying Liao
| |
Collapse
|
3
|
Li S, Fan S, Li N, Shen Y, Xiang X, Chen W, Xia J, Han X, Cui M, Huang Y. The N1038S Substitution and 1153EQTRPKKSV 1162 Deletion of the S2 Subunit of QX-Type Avian Infectious Bronchitis Virus Can Synergistically Enhance Viral Proliferation. Front Microbiol 2022; 13:829218. [PMID: 35432239 PMCID: PMC9006875 DOI: 10.3389/fmicb.2022.829218] [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: 12/05/2021] [Accepted: 03/07/2022] [Indexed: 11/13/2022] Open
Abstract
The S2 subunit of infectious bronchitis virus (IBV) plays a critical role in the process of IBV infection. A comparison between the S2 subunit sequence of chicken embryo kidney cell (CEK) adapted virulent QX-like IBV strain SczyC30 (hereafter referred to as zy30) and its CEK-attenuated strain, SczyC100, revealed an N1038S substitution in S2 subunit and a 1154EQTRPKKSV1162 residue deletion in the C-terminus of the S2 subunit. In order to explore whether these two mutations are related to changes in the biological characteristics of IBV, we firstly constructed an infectious clone of zy30 using a bacterial artificial chromosome (BAC), which combines the transcription of infectious IBV genomic RNA in non-susceptible BHK-21 cells with the amplification of rescued virus rzy30 in CEK cells. Then, three recombinant viruses, including an rzy30S2-N1038S strain that contained the N1038S substitution, an rzy30S2-CT9△ strain that contained the 1154EQTRPKKSV1162 deletion, and an rzy30S2-N1038S-CT9△ strain that contained both mutations, were constructed using rescued virus rzy30 as the backbone. The results showed that each mutation did not significantly affect the replication titer in CEK cells but reduced pathogenicity in chickens, while in combination, the N1038S substitution and 1154EQTRPKKSV1162 deletion improved the proliferation efficiency in CEK cells and reduced pathogenicity, compared to rzy30 strain. The contribution made by the 1154EQTRPKKSV1162 deletion in reducing pathogenicity was higher than that of N1038S substitution. Our results revealed that the N1038S substitution and 1154EQTRPKKSV1162 deletion in S2 subunit were deeply involved in the replication efficiency of IBV and contributed to reduction of viral pathogenicity.
Collapse
Affiliation(s)
- Shuyun Li
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Shunyi Fan
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Nianning Li
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Yuxi Shen
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Xuelian Xiang
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Wen Chen
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Jing Xia
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Xinfeng Han
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Min Cui
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Yong Huang
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| |
Collapse
|
4
|
Identification of Amino Acids within Nonstructural Proteins 10 and 14 of the Avian Coronavirus Infectious Bronchitis Virus That Result in Attenuation In Vivo and In Ovo. J Virol 2022; 96:e0205921. [PMID: 35044208 PMCID: PMC8941869 DOI: 10.1128/jvi.02059-21] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The Gammacoronavirus infectious bronchitis virus (IBV) is a highly contagious global pathogen prevalent in all types of poultry flocks. IBV is responsible for economic losses and welfare issues in domestic poultry, resulting in a significant risk to food security. IBV vaccines are currently generated by serial passage of virulent IBV field isolates through embryonated hens' eggs. The different patterns of genomic variation accumulated during this process means that the exact mechanism of attenuation is unknown and presents a risk of reversion to virulence. Additionally, the passaging process adapts the virus to replicate in chicken embryos, increasing embryo lethality. Vaccines produced in this manner are therefore unsuitable for in ovo application. We have developed a reverse genetics system, based on the pathogenic IBV strain M41, to identify genes which can be targeted for rational attenuation. During the development of this reverse genetics system, we identified four amino acids, located in nonstructural proteins (nsps) 10, 14, 15, and 16, which resulted in attenuation both in vivo and in ovo. Further investigation highlighted a role of amino acid changes, Pro85Leu in nsp 10 and Val393Leu in nsp 14, in the attenuated in vivo phenotype observed. This study provides evidence that mutations in nsps offer a promising mechanism for the development of rationally attenuated live vaccines against IBV, which have the potential for in ovo application. IMPORTANCE The Gammacoronavirus infectious bronchitis virus (IBV) is the etiological agent of infectious bronchitis, an acute, highly contagious, economically important disease of poultry. Vaccination is achieved using a mixture of live attenuated vaccines for young chicks and inactivated vaccines as boosters for laying hens. Live attenuated vaccines are generated through serial passage in embryonated hens' eggs, an empirical process which achieves attenuation but retains immunogenicity. However, these vaccines have a risk of reversion to virulence, and they are lethal to the embryo. In this study, we identified amino acids in the replicase gene which attenuated IBV strain M41, both in vivo and in ovo. Stability assays indicate that the attenuating amino acids are stable and unlikely to revert. The data in this study provide evidence that specific modifications in the replicase gene offer a promising direction for IBV live attenuated vaccine development, with the potential for in ovo application.
Collapse
|
5
|
Genetic and Pathogenic Characteristics of a Novel Infectious Bronchitis Virus Strain in Genogroup VI (CK/CH/FJ/202005). Vet Microbiol 2022; 266:109352. [DOI: 10.1016/j.vetmic.2022.109352] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 01/19/2022] [Accepted: 01/19/2022] [Indexed: 11/19/2022]
|
6
|
Nath B, Morla S, Kumar S. Reverse Genetics and Its Usage in the Development of Vaccine Against Poultry Diseases. Methods Mol Biol 2022; 2411:77-92. [PMID: 34816399 DOI: 10.1007/978-1-0716-1888-2_4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Vaccines are the most effective and economic way of combating poultry viruses. However, the use of traditional live-attenuated poultry vaccines has problems such as antigenic differences with the currently circulating strains of viruses and the risk of reversion to virulence. In veterinary medicine, reverse genetics is applied to solve these problems by developing genotype-matched vaccines, better attenuated and effective live vaccines, broad-spectrum vaccine vectors, bivalent vaccines, and genetically tagged recombinant vaccines that facilitate the serological differentiation of vaccinated animals from infected animals. In this chapter, we discuss reverse genetics as a tool for the development of recombinant vaccines against economically devastating poultry viruses.
Collapse
Affiliation(s)
- Barnali Nath
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam, India
| | - Sudhir Morla
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam, India
| | - Sachin Kumar
- Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam, India.
| |
Collapse
|
7
|
Bhuiyan MSA, Amin Z, Rodrigues KF, Saallah S, Shaarani SM, Sarker S, Siddiquee S. Infectious Bronchitis Virus (Gammacoronavirus) in Poultry Farming: Vaccination, Immune Response and Measures for Mitigation. Vet Sci 2021; 8:273. [PMID: 34822646 PMCID: PMC8623603 DOI: 10.3390/vetsci8110273] [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: 09/28/2021] [Revised: 11/09/2021] [Accepted: 11/09/2021] [Indexed: 11/17/2022] Open
Abstract
Infectious bronchitis virus (IBV) poses significant financial and biosecurity challenges to the commercial poultry farming industry. IBV is the causative agent of multi-systemic infection in the respiratory, reproductive and renal systems, which is similar to the symptoms of various viral and bacterial diseases reported in chickens. The avian immune system manifests the ability to respond to subsequent exposure with an antigen by stimulating mucosal, humoral and cell-mediated immunity. However, the immune response against IBV presents a dilemma due to the similarities between the different serotypes that infect poultry. Currently, the live attenuated and killed vaccines are applied for the control of IBV infection; however, the continual emergence of IB variants with rapidly evolving genetic variants increases the risk of outbreaks in intensive poultry farms. This review aims to focus on IBV challenge-infection, route and delivery of vaccines and vaccine-induced immune responses to IBV. Various commercial vaccines currently have been developed against IBV protection for accurate evaluation depending on the local situation. This review also highlights and updates the limitations in controlling IBV infection in poultry with issues pertaining to antiviral therapy and good biosecurity practices, which may aid in establishing good biorisk management protocols for its control and which will, in turn, result in a reduction in economic losses attributed to IBV infection.
Collapse
Affiliation(s)
- Md. Safiul Alam Bhuiyan
- Biotechnology Research Institute, Universiti Malaysia Sabah, Jln UMS, Kota Kinabalu 88400, Malaysia; (M.S.A.B.); (Z.A.); (K.F.R.); (S.S.)
| | - Zarina Amin
- Biotechnology Research Institute, Universiti Malaysia Sabah, Jln UMS, Kota Kinabalu 88400, Malaysia; (M.S.A.B.); (Z.A.); (K.F.R.); (S.S.)
| | - Kenneth Francis Rodrigues
- Biotechnology Research Institute, Universiti Malaysia Sabah, Jln UMS, Kota Kinabalu 88400, Malaysia; (M.S.A.B.); (Z.A.); (K.F.R.); (S.S.)
| | - Suryani Saallah
- Biotechnology Research Institute, Universiti Malaysia Sabah, Jln UMS, Kota Kinabalu 88400, Malaysia; (M.S.A.B.); (Z.A.); (K.F.R.); (S.S.)
| | - Sharifudin Md. Shaarani
- Food Biotechnology Program, Faculty of Science and Technology, Universiti Sains Islam Malaysia, Bandar Baru Nilai, Nilai 71800, Malaysia;
| | - Subir Sarker
- Department of Physiology, Anatomy and Microbiology, La Trobe University, Melbourne, VIC 3086, Australia;
| | - Shafiquzzaman Siddiquee
- Biotechnology Research Institute, Universiti Malaysia Sabah, Jln UMS, Kota Kinabalu 88400, Malaysia; (M.S.A.B.); (Z.A.); (K.F.R.); (S.S.)
| |
Collapse
|
8
|
An attenuated TW-like infectious bronchitis virus strain has potential to become a candidate vaccine and S gene is responsible for its attenuation. Vet Microbiol 2021; 254:109014. [PMID: 33636510 DOI: 10.1016/j.vetmic.2021.109014] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Accepted: 02/14/2021] [Indexed: 02/07/2023]
Abstract
TW-like infectious bronchitis virus (IBV) with high pathogenicity is becoming the predominant IBV type circulating in China. To develop vaccines against TW-like IBV strains and investigate the critical genes associated with their virulence, GD strain was attenuated by 140 serial passages in specific-pathogen-free embryonated eggs and the safety and efficacy of the attenuated GD strain (aGD) were examined. The genome sequences of GD and aGD were also compared and the effects of mutations in the S gene were observed. The results revealed that aGD strain showed no obvious pathogenicity with superior protective efficacy against TW-like and QX-like virulent IBV strains. The genomes of strains aGD and GD shared high similarity (99.87 %) and most of the mutations occurred in S gene. Recombinant IBV strain rGDaGD-S, in which the S gene was replaced with the corresponding regions from aGD, showed decreased pathogenicity compared with its parental strain. In conclusion, attenuated TW-like IBV strain aGD is a potential vaccine candidate and the S gene is responsible for its attenuation. Our research has laid the foundation for future exploration of the attenuating molecular mechanism of IBV.
Collapse
|
9
|
Lv C, Shi T, Zhu P, Peng X, Cao S, Yan Y, Ojha NK, Liao M, Zhou J. Construction of an infectious bronchitis virus vaccine strain carrying chimeric S1 gene of a virulent isolate and its pathogenicity analysis. Appl Microbiol Biotechnol 2020; 104:8427-8437. [PMID: 32813067 PMCID: PMC7434845 DOI: 10.1007/s00253-020-10834-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2020] [Revised: 08/06/2020] [Accepted: 08/11/2020] [Indexed: 01/08/2023]
Abstract
Abstract Infectious bronchitis virus (IBV) is a member of genus gamma-coronavirus in the family Coronaviridae, causing serious economic losses to the poultry industry. Reverse genetics is a common technique to study the biological characteristics of viruses. So far, there is no BAC reverse genetic system available for rescue of IBV infectious clone. In the present study, a new strategy for the construction of IBV infectious cDNA clone was established. The full-length genomic cDNA of IBV vaccine strain H120 was constructed in pBAC vector from four IBV fragment subcloning vectors by homologous recombination, which contained the CMV promoter at the 5′ end and the hepatitis D virus ribozyme (HDVR) sequence and bovine growth hormone polyadenylation (BGH) sequence after the polyA tail at the 3′ end of the full-length cDNA. Subsequently, using the same technique, another plasmid pBAC-H120/SCS1 was also constructed, in which S1 gene from IBV H120 strain was replaced with that of a virulent SC021202 strain. Recombinant virus rH120 and rH120/SCS1 were rescued by transfecting the plasmids into BHK cells and passaged in embryonated chicken eggs. Finally, the pathogenicity of both the recombinant virus strains rH120 and rH120/SCS1 was evaluated in SPF chickens. The results showed that the chimeric rH120/SCS1 strain was not pathogenic compared with the wild-type IBV SC021202 strain and the chickens inoculated with rH120/SCS1 could resist challenge infection by IBV SC021202. Taken together, our results indicate that BAC reverse genetic system could be used to rescue IBV in vitro and IBV S1 protein alone might not be the key factor for IBV pathogenicity. Key points • BAC vector was used to construct IBV full-length cDNA by homologous recombination. • Based on four subcloning vectors, a recombinant chimeric IBV H120/SCS1 was constructed and rescued. • Pathogenicity of H120/SCS1 was similar to that of H120, but different to that of SC021202.
Collapse
Affiliation(s)
- Chenfei Lv
- Key Laboratory of Animal Virology of Ministry of Agriculture, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, People's Republic of China
| | - Tingting Shi
- Key Laboratory of Animal Virology of Ministry of Agriculture, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, People's Republic of China
| | - Pengpeng Zhu
- Key Laboratory of Animal Virology of Ministry of Agriculture, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, People's Republic of China
| | - Xing Peng
- Key Laboratory of Animal Virology of Ministry of Agriculture, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, People's Republic of China
| | - Shangshang Cao
- Key Laboratory of Animal Virology of Ministry of Agriculture, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, People's Republic of China
| | - Yan Yan
- Key Laboratory of Animal Virology of Ministry of Agriculture, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, People's Republic of China
| | - Nishant Kumar Ojha
- Key Laboratory of Animal Virology of Ministry of Agriculture, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, People's Republic of China
| | - Min Liao
- Key Laboratory of Animal Virology of Ministry of Agriculture, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, People's Republic of China.
| | - Jiyong Zhou
- Key Laboratory of Animal Virology of Ministry of Agriculture, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, People's Republic of China
| |
Collapse
|
10
|
Keep S, Sives S, Stevenson-Leggett P, Britton P, Vervelde L, Bickerton E. Limited Cross-Protection against Infectious Bronchitis Provided by Recombinant Infectious Bronchitis Viruses Expressing Heterologous Spike Glycoproteins. Vaccines (Basel) 2020; 8:E330. [PMID: 32580371 PMCID: PMC7350270 DOI: 10.3390/vaccines8020330] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 06/19/2020] [Accepted: 06/21/2020] [Indexed: 12/19/2022] Open
Abstract
Gammacoronavirus infectious bronchitis virus (IBV) causes an economically important respiratory disease of poultry. Protective immunity is associated with the major structural protein, spike (S) glycoprotein, which induces neutralising antibodies and defines the serotype. Cross-protective immunity between serotypes is limited and can be difficult to predict. In this study, the ability of two recombinant IBV vaccine candidates, BeauR-M41(S) and BeauR-4/91(S), to induce cross-protection against a third serotype, QX, was assessed. Both rIBVs are genetically based on the Beaudette genome with only the S gene derived from either M41 or 4/91, two unrelated serotypes. The use of these rIBVs allowed for the assessment of the potential of M41 and 4/91 S glycoproteins to induce cross-protective immunity against a heterologous QX challenge. The impact of the order of vaccination was also assessed. Homologous primary and secondary vaccination with BeauR-M41(S) or BeauR-4/91(S) resulted in a significant reduction of infectious QX load in the trachea at four days post-challenge, whereas heterologous primary and secondary vaccination with BeauR-M41(S) and BeauR-4/91(S) reduced viral RNA load in the conjunctiva-associated lymphoid tissue (CALT). Both homologous and heterologous vaccination regimes reduced clinical signs and birds recovered more rapidly as compared with an unvaccinated/challenge control group. Despite both rIBV BeauR-M41(S) and BeauR-4/91(S) displaying limited replication in vivo, serum titres in these vaccinated groups were higher as compared with the unvaccinated/challenge control group. This suggests that vaccination with rIBV primed the birds for a boosted humoral response to heterologous QX challenge. Collectively, vaccination with the rIBV elicited limited protection against challenge, with failure to protect against tracheal ciliostasis, clinical manifestations, and viral replication. The use of a less attenuated recombinant vector that replicates throughout the respiratory tract could be required to elicit a stronger and prolonged protective immune response.
Collapse
Affiliation(s)
- Sarah Keep
- The Pirbright Institute, Pirbright, Surrey GU24 0NF, UK; (S.K.); (P.S.-L.); (P.B.)
| | - Samantha Sives
- Division of Infection and Immunity, The Roslin Institute and Royal (Dick), School of Veterinary Studies, University of Edinburgh, Easter Bush EH25 9RG, UK; (S.S.); (L.V.)
| | | | - Paul Britton
- The Pirbright Institute, Pirbright, Surrey GU24 0NF, UK; (S.K.); (P.S.-L.); (P.B.)
| | - Lonneke Vervelde
- Division of Infection and Immunity, The Roslin Institute and Royal (Dick), School of Veterinary Studies, University of Edinburgh, Easter Bush EH25 9RG, UK; (S.S.); (L.V.)
| | - Erica Bickerton
- The Pirbright Institute, Pirbright, Surrey GU24 0NF, UK; (S.K.); (P.S.-L.); (P.B.)
| |
Collapse
|
11
|
Recombinant infectious bronchitis coronavirus H120 with the spike protein S1 gene of the nephropathogenic IBYZ strain remains attenuated but induces protective immunity. Vaccine 2020; 38:3157-3168. [PMID: 32057575 PMCID: PMC7115396 DOI: 10.1016/j.vaccine.2020.01.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Revised: 12/28/2019] [Accepted: 01/02/2020] [Indexed: 12/26/2022]
Abstract
Infectious bronchitis (IB) is a highly infectious viral disease responsible for major economic losses in the poultry industry. A reverse genetic vaccine is a safe, rapid, and effective method of achieving IB prevention and control. In this study, we constructed the recombinant strain, rH120-S1/YZ, using a reverse genetic system, based on the backbone of the H120 vaccine strain, with the S1 gene replaced with that of the QX-like nephropathogenic strain, ck/CH/IBYZ/2011, isolated in China. The results of dwarf chicken embryos, growth kinetics, and viral titration in the embryos demonstrated that the biological characteristics of the recombinant virus remained unchanged. Like the rH120-infected group and in contrast to the rIBYZ-infected group, no mortality, clinical signs, or lesions were observed in the lungs or kidneys of young chickens inoculated with rH120-S1/YZ. The viral loads in various tissues, cloacal, and oral swabs was lower in most types of samples, indicating that the rH120-S1/YZ strain was highly safe in chicks. Compared to rH120 vaccination group, when the efficacy of this strain was evaluated against the QX-like IBV strain, better protection, with 100% survival rate and no disease symptom or gross lesion was observed in the chickens vaccinated with rH120-S1/YZ. Increased levels of IBV-specific antibodies were detected in the serum of the rH120-S1/YZ-vaccinated animals 14 days post-vaccination. Collectively, our results suggest that the recombinant strain, rH120-S1/YZ, may represent a promising vaccine candidate against QX-like IBVs.
Collapse
|
12
|
Zhao X, Jiang Y, Cheng X, Yu Y, Gao M, Zhou S. Pathogenicity of a QX-like strain of infectious bronchitis virus and effects of accessory proteins 3a and 3b in chickens. Vet Microbiol 2019; 239:108464. [PMID: 31767070 DOI: 10.1016/j.vetmic.2019.108464] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Revised: 10/20/2019] [Accepted: 10/20/2019] [Indexed: 11/28/2022]
Abstract
QX-like genotype infectious bronchitis virus (IBV) has become prevalent in recent years. Few studies have reported the effects of accessory proteins 3a and 3b on pathogenicity in vivo. We developed a reverse genetics system to manipulate the genome of a QX-like IBV strain IBYZ. Recombinant viruses rIBYZ-ScAUG3a, rIBYZ-ScAUG3b and rIBYZ-ScAUG3ab were generated. These viruses do not express the accessory proteins 3a, 3b, or 3ab due to a mutation in the AUG start codons. In SPF embryonated eggs, the recombinant viruses grew to the same viral load as parental strain rIBYZ. The pathogenicity of rIBYZ and recombinant viruses was examined in 1-day-old SPF chickens. In SPF chickens, rIBYZ-ScAUG3a had a lower mortality than rIBYZ. The clinical signs, gross lesions and histopathological changes of rIBYZ-ScAUG3a group were comparable to those of rIBYZ group. However, viral distribution and viral shedding showed that the viral loads of rIBYZ-ScAUG3a were lower than those of rIBYZ in tissue samples and swab specimens. The rIBYZ-ScAUG3b and rIBYZ-ScAUG3ab strains showed attenuated pathogenicity compared to rIBYZ, as no chickens died and all the parameters tested were considerably low. This study indicates that the absence of accessory proteins 3a and 3b in IBV lead to attenuated pathogenicity in chickens. Protein 3b has a greater effect on pathogenicity than protein 3a. These findings may be used in vaccination trials for the development of a new live-attenuated vaccine.
Collapse
Affiliation(s)
- Xiumei Zhao
- Jiangsu Institute of Poultry Science, Yangzhou 225125, People's Republic of China
| | - Yi Jiang
- Jiangsu Institute of Poultry Science, Yangzhou 225125, People's Republic of China
| | - Xu Cheng
- Jiangsu Institute of Poultry Science, Yangzhou 225125, People's Republic of China
| | - Yan Yu
- Jiangsu Institute of Poultry Science, Yangzhou 225125, People's Republic of China
| | - Mingyan Gao
- Jiangsu Institute of Poultry Science, Yangzhou 225125, People's Republic of China
| | - Sheng Zhou
- Jiangsu Institute of Poultry Science, Yangzhou 225125, People's Republic of China.
| |
Collapse
|
13
|
Zhao Y, Cheng J, Xu G, Thiel V, Zhang G. Successful establishment of a reverse genetic system for QX-type infectious bronchitis virus and technical improvement of the rescue procedure. Virus Res 2019; 272:197726. [PMID: 31430502 PMCID: PMC7114641 DOI: 10.1016/j.virusres.2019.197726] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Revised: 08/16/2019] [Accepted: 08/16/2019] [Indexed: 12/22/2022]
Abstract
A vaccinia virus-based IBV reverse genetics system was developed. BHK21/N cells and ECE were used to improve rescue efficiency. The improved rescue procedure is readily applicable to other IBVs.
In this study, a pathogenic avian infectious bronchitis virus (IBV) QX-type strain YN was successfully rescued by vaccinia virus based reverse genetic technology. Ten fragments contiguously spanning the complete IBV genome were amplified and cloned into the vaccinia virus genome by homologous recombination. The full-length genomic cDNA was transcribed in vitro, and its transcript was transfected into BHK-21/N cells that could stably express IBV N protein. At 48 h post transfection, the culture medium was harvested and inoculated into 10-day-old specific-pathogen-free embryonated chicken eggs to replicate the rescued virus. This strategy was chosen to facilitate the rescue procedure and to ensure that the recombinant rYN virus will not require any cell culture adaptations. After only one in ovo passage, the recombinant YN virus (rYN) was successfully recovered and confirmed to possess the introduced silent marker mutation in its genome. Biological characteristics of rYN such as the EID50, TCID50, replication in ovo, and replication kinetcs in vitro were tested and all were similar to its parental strain YN. Our findings demonstrate the successful construction of highly-pathogenic QX-type IBV using a modified rescue procedure, allowing for future studies of the molecular biology and pathogenicity of IBV field strains.
Collapse
Affiliation(s)
- Ye Zhao
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Jinlong Cheng
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Gang Xu
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Volker Thiel
- Institute for Virology and Immunology, 3012, Bern, Switzerland; Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty Bern, University of Bern, Switzerland.
| | - Guozhong Zhang
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China.
| |
Collapse
|
14
|
Zhao Y, Cheng J, Yan S, Jia W, Zhang K, Zhang G. S gene and 5a accessory gene are responsible for the attenuation of virulent infectious bronchitis coronavirus. Virology 2019; 533:12-20. [PMID: 31078931 PMCID: PMC7112010 DOI: 10.1016/j.virol.2019.04.014] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Revised: 04/27/2019] [Accepted: 04/29/2019] [Indexed: 11/01/2022]
Abstract
To explore the critical genes associated with infectious bronchitis virus (IBV) virulence, we compared the genome sequences of virulent YN strain and its attenuated strain aYN. Accumulation of mutations in the S gene and the accessory gene 5a were observed, suggesting a potential role in the loss of viral pathogenicity. Two recombinant IBVs (rIBVs) with replacement of the S gene or 5a with corresponding regions from aYN were rescued to verify this speculation. Embryo mortality time/rate showed that rYN-S-aYN and rYN-5a-aYN had an attenuated phenotype in ovo. Replication assay in ovo and in vitro demonstrated the rIBVs had similar replication patterns with wild-type rIBV. Both rIBVs showed reduced mortality, tissue lesions and tissue virus titers in chicken. In conclusion, S gene and 5a accessory gene are responsible for the attenuation of virulent IBV. Insight into the genes responsible for virus attenuation will facilitate the development of future vaccines against IBV.
Collapse
Affiliation(s)
- Ye Zhao
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Jinlong Cheng
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Shihong Yan
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Wenfeng Jia
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Keran Zhang
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Guozhong Zhang
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China.
| |
Collapse
|
15
|
Graham RL, Deming DJ, Deming ME, Yount BL, Baric RS. Evaluation of a recombination-resistant coronavirus as a broadly applicable, rapidly implementable vaccine platform. Commun Biol 2018; 1:179. [PMID: 30393776 PMCID: PMC6206136 DOI: 10.1038/s42003-018-0175-7] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Accepted: 09/19/2018] [Indexed: 12/15/2022] Open
Abstract
Emerging and re-emerging zoonotic viral diseases are major threats to global health, economic stability, and national security. Vaccines are key for reducing coronaviral disease burden; however, the utility of live-attenuated vaccines is limited by risks of reversion or repair. Because of their history of emergence events due to their prevalence in zoonotic pools, designing live-attenuated coronavirus vaccines that can be rapidly and broadly implemented is essential for outbreak preparedness. Here, we show that coronaviruses with completely rewired transcription regulatory networks (TRNs) are effective vaccines against SARS-CoV. The TRN-rewired viruses are attenuated and protect against lethal SARS-CoV challenge. While a 3-nt rewired TRN reverts via second-site mutation upon serial passage, a 7-nt rewired TRN is more stable, suggesting that a more extensively rewired TRN might be essential for avoiding growth selection. In summary, rewiring the TRN is a feasible strategy for limiting reversion in an effective live-attenuated coronavirus vaccine candidate that is potentially portable across the Nidovirales order.
Collapse
Affiliation(s)
- Rachel L Graham
- Department of Epidemiology, The University of North Carolina at Chapel Hill, 2107 McGavran-Greenberg, CB 7435, Chapel Hill, NC, 27599, USA
| | - Damon J Deming
- Department of Epidemiology, The University of North Carolina at Chapel Hill, 2107 McGavran-Greenberg, CB 7435, Chapel Hill, NC, 27599, USA
- Department of Microbiology and Immunology, The University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
- Food and Drug Administration, 10933 New Hampshire Avenue, Bldg 22, Rm 6170, Silver Spring, MD, 20993, USA
| | - Meagan E Deming
- Department of Microbiology and Immunology, The University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
- University of Maryland Medical Center, Department of Medicine, Division of Infectious Disease, Institute of Human Virology, 725 West Lombard Street, Room 211A, Baltimore, MD, 21201, USA
| | - Boyd L Yount
- Department of Epidemiology, The University of North Carolina at Chapel Hill, 2107 McGavran-Greenberg, CB 7435, Chapel Hill, NC, 27599, USA
| | - Ralph S Baric
- Department of Epidemiology, The University of North Carolina at Chapel Hill, 2107 McGavran-Greenberg, CB 7435, Chapel Hill, NC, 27599, USA.
- Department of Microbiology and Immunology, The University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA.
| |
Collapse
|
16
|
Recombinant live attenuated avian coronavirus vaccines with deletions in the accessory genes 3ab and/or 5ab protect against infectious bronchitis in chickens. Vaccine 2018; 36:1085-1092. [PMID: 29366709 PMCID: PMC7115609 DOI: 10.1016/j.vaccine.2018.01.017] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Revised: 12/15/2017] [Accepted: 01/09/2018] [Indexed: 01/28/2023]
Abstract
Avian coronavirus infectious bronchitis virus (IBV) is a respiratory pathogen of chickens, causing severe economic losses in poultry industry worldwide. Live attenuated viruses are widely used in both the broiler and layer industry because of their efficacy and ability to be mass applied. Recently, we established a novel reverse genetics system based on targeted RNA recombination to manipulate the genome of IBV strain H52. Here we explore the possibilities to attenuate IBV in a rational way in order to generate safe and effective vaccines against virulent IBV (van Beurden et al., 2017). To this end, we deleted the nonessential group-specific accessory genes 3 and/or 5 in the IBV genome by targeted RNA recombination and selected the recombinant viruses in embryonated eggs. The resulting recombinant (r) rIBV-Δ3ab, rIBV-Δ5ab, and rIBV-Δ3ab5ab could be rescued and grew to the same virus titer as recombinant and wild type IBV strain H52. Thus, genes 3ab and 5ab are not essential for replication in ovo. When administered to one-day-old chickens, rIBV-Δ3ab, rIBV-Δ5ab, and rIBV-Δ3ab5ab showed reduced ciliostasis as compared to rIBV H52 and wild type H52, indicating that the accessory genes contribute to the pathogenicity of IBV. After homologous challenge with the virulent IBV strain M41, all vaccinated chickens were protected against disease based on reduced loss of ciliary movement in the trachea compared to the non-vaccinated but challenged controls. Taken together, deletion of accessory genes 3ab and/or 5ab in IBV resulted in mutant viruses with an attenuated phenotype and the ability to induce protection in chickens. Hence, targeted RNA recombination based on virulent IBV provides opportunities for the development of a next generation of rationally designed live attenuated IBV vaccines.
Collapse
|
17
|
van Beurden SJ, Berends AJ, Krämer-Kühl A, Spekreijse D, Chénard G, Philipp HC, Mundt E, Rottier PJM, Verheije MH. A reverse genetics system for avian coronavirus infectious bronchitis virus based on targeted RNA recombination. Virol J 2017; 14:109. [PMID: 28606144 PMCID: PMC5468965 DOI: 10.1186/s12985-017-0775-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2016] [Accepted: 06/01/2017] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Avian coronavirus infectious bronchitis virus (IBV) is a respiratory pathogen of chickens that causes severe economic losses in the poultry industry worldwide. Major advances in the study of the molecular biology of IBV have resulted from the development of reverse genetics systems for the highly attenuated, cell culture-adapted, IBV strain Beaudette. However, most IBV strains, amongst them virulent field isolates, can only be propagated in embryonated chicken eggs, and not in continuous cell lines. METHODS We established a reverse genetics system for the IBV strain H52, based on targeted RNA recombination in a two-step process. First, a genomic and a chimeric synthetic, modified IBV RNA were co-transfected into non-susceptible cells to generate a recombinant chimeric murinized (m) IBV intermediate (mIBV). Herein, the genomic part coding for the spike glycoprotein ectodomain was replaced by that of the coronavirus mouse hepatitis virus (MHV), allowing for the selection and propagation of recombinant mIBV in murine cells. In the second step, mIBV was used as the recipient. To this end a recombination with synthetic RNA comprising the 3'-end of the IBV genome was performed by introducing the complete IBV spike gene, allowing for the rescue and selection of candidate recombinants in embryonated chicken eggs. RESULTS Targeted RNA recombination allowed for the modification of the 3'-end of the IBV genome, encoding all structural and accessory genes. A wild-type recombinant IBV was constructed, containing several synonymous marker mutations. The in ovo growth kinetics and in vivo characteristics of the recombinant virus were similar to those of the parental IBV strain H52. CONCLUSIONS Targeted RNA recombination allows for the generation of recombinant IBV strains that are not able to infect and propagate in continuous cell lines. The ability to introduce specific mutations holds promise for the development of rationally designed live-attenuated IBV vaccines and for studies into the biology of IBV in general.
Collapse
Affiliation(s)
- Steven J van Beurden
- Faculty of Veterinary Medicine, Department of Pathobiology, Utrecht University, Yalelaan 1, 3584 CL, Utrecht, The Netherlands
| | - Alinda J Berends
- Faculty of Veterinary Medicine, Department of Pathobiology, Utrecht University, Yalelaan 1, 3584 CL, Utrecht, The Netherlands
| | - Annika Krämer-Kühl
- Boehringer Ingelheim Veterinary Research Center GmbH & Co. KG, Bemeroder Str. 31, 30559, Hannover, Germany
| | - Dieuwertje Spekreijse
- Boehringer Ingelheim Animal Health Operations, C.J. van Houtenlaan 36, 1381 CP, Weesp, The Netherlands
| | - Gilles Chénard
- Boehringer Ingelheim Animal Health Operations, C.J. van Houtenlaan 36, 1381 CP, Weesp, The Netherlands
| | - Hans-Christian Philipp
- Boehringer Ingelheim Veterinary Research Center GmbH & Co. KG, Bemeroder Str. 31, 30559, Hannover, Germany
| | - Egbert Mundt
- Boehringer Ingelheim Veterinary Research Center GmbH & Co. KG, Bemeroder Str. 31, 30559, Hannover, Germany
| | - Peter J M Rottier
- Faculty of Veterinary Medicine, Department of Pathobiology, Utrecht University, Yalelaan 1, 3584 CL, Utrecht, The Netherlands
| | - M Hélène Verheije
- Faculty of Veterinary Medicine, Department of Pathobiology, Utrecht University, Yalelaan 1, 3584 CL, Utrecht, The Netherlands.
| |
Collapse
|
18
|
The establishment and characteristics of cell-adapted IBV strain H120. Arch Virol 2016; 161:3179-87. [PMID: 27558123 DOI: 10.1007/s00705-016-3008-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Accepted: 08/02/2016] [Indexed: 12/23/2022]
Abstract
Avian infectious bronchitis virus is an important pathogen in poultry worldwide. Vaccination is the only effective way to prevent and control IBV infection. H120, one of the safest vaccine strains, which has been used worldwide as a primary vaccine, cannot adapt to passaged cells, which severely restricts the quality of the vaccine. Based on the reverse genetics of our previous research work, we constructed the recombinant R-H120-Beaudette-p65(S) strain by replacing the complete spike gene of H120 with the corresponding spike gene from the Beaudette p65 strain. Some biological characteristics, including replication kinetics, virulence and immunological properties of R-H120-Beaudette-p65(S) have been evaluated. The results showed that biological characteristics of R-H120-Beaudette-p65(S), such as replication kinetics in embryonated chicken eggs (ECEs) and embryo virulence, were similar to those of H120. In addition, R-H120-Beaudette-p65(S) could induce a similar antibody titre and provide up to 80 % immune protection in chickens challenged with the M41 strain. These results indicate that R-H120-Beaudette-p65(S) has the potential for further development as a cell-adapted vaccine.
Collapse
|
19
|
Yang X, Zhou Y, Li J, Fu L, Ji G, Zeng F, Zhou L, Gao W, Wang H. Recombinant infectious bronchitis virus (IBV) H120 vaccine strain expressing the hemagglutinin-neuraminidase (HN) protein of Newcastle disease virus (NDV) protects chickens against IBV and NDV challenge. Arch Virol 2016; 161:1209-16. [PMID: 26873815 PMCID: PMC7087005 DOI: 10.1007/s00705-016-2764-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2015] [Accepted: 01/17/2016] [Indexed: 01/20/2023]
Abstract
Infectious bronchitis (IB) and Newcastle disease (ND) are common viral diseases of chickens, which are caused by infectious bronchitis virus (IBV) and Newcastle disease virus (NDV), respectively. Vaccination with live attenuated strains of IBV-H120 and NDV-LaSota are important for the control of IB and ND. However, conventional live attenuated vaccines are expensive and result in the inability to differentiate between infected and vaccinated chickens. Therefore, there is an urgent need to develop new efficacious vaccines. In this study, using a previously established reverse genetics system, we generated a recombinant IBV virus based on the IBV H120 vaccine strain expressing the haemagglutinin-neuraminidase (HN) protein of NDV. The recombinant virus, R-H120-HN/5a, exhibited growth dynamics, pathogenicity and viral titers that were similar to those of the parental IBV H120, but it had acquired hemagglutination activity from NDV. Vaccination of SPF chickens with the R-H120-HN/5a virus induced a humoral response at a level comparable to that of the LaSota/H120 commercial bivalent vaccine and provided significant protection against challenge with virulent IBV and NDV. In summary, the results of this study indicate that the IBV H120 strain could serve as an effective tool for designing vaccines against IB and other infectious diseases, and the generation of IBV R-H120-HN/5a provides a solid foundation for the development of an effective bivalent vaccine against IBV and NDV.
Collapse
Affiliation(s)
- Xin Yang
- Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, School of Life Science, Sichuan University, Chengdu, 610064, China
| | - Yingshun Zhou
- Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, School of Life Science, Sichuan University, Chengdu, 610064, China
| | - Jianan Li
- Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, School of Life Science, Sichuan University, Chengdu, 610064, China
| | - Li Fu
- Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, School of Life Science, Sichuan University, Chengdu, 610064, China
| | - Gaosheng Ji
- Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, School of Life Science, Sichuan University, Chengdu, 610064, China
| | - Fanya Zeng
- Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, School of Life Science, Sichuan University, Chengdu, 610064, China
| | - Long Zhou
- Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, School of Life Science, Sichuan University, Chengdu, 610064, China
| | - Wenqian Gao
- Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, School of Life Science, Sichuan University, Chengdu, 610064, China
| | - Hongning Wang
- Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, School of Life Science, Sichuan University, Chengdu, 610064, China.
| |
Collapse
|
20
|
Molecular detection and Smoothing spline clustering of the IBV strains detected in China during 2011-2012. Virus Res 2015; 211:145-50. [PMID: 26494165 DOI: 10.1016/j.virusres.2015.10.015] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2015] [Revised: 09/22/2015] [Accepted: 10/13/2015] [Indexed: 11/23/2022]
Abstract
Infectious bronchitis virus (IBV) is a highly variable virus with a large number of genotypes. During 2011-2012, nineteen wild IBV strains were isolated in China. Sequence analysis showed that these isolates were divided into five sub-clusters: A2-like, CKCHLDL08I-like, SAIBK-like, KM91-like and TW97/4-like. Phylogenetic analysis based on the 1118 sequences available on line suggested that all IBVs were classified into six clusters. The prevalent strains including all the isolates were in cluster VI with a 0.194-0.259 genetic distance to Mass type vaccines. In addition, we introduced the smoothing spline clustering (SSC) method to estimate the highly variable sites for some sub-clusters. The results showed that highly variable sites range from sub-clusters, the N-terminal sequences of 4/91-like, TW97/4-like and Arkansas-like are more variable than other sub-clusters. This is the first time that the SSC method has been used for the evolution study of IBV.
Collapse
|
21
|
Bande F, Arshad SS, Hair Bejo M, Moeini H, Omar AR. Progress and challenges toward the development of vaccines against avian infectious bronchitis. J Immunol Res 2015; 2015:424860. [PMID: 25954763 PMCID: PMC4411447 DOI: 10.1155/2015/424860] [Citation(s) in RCA: 89] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2014] [Revised: 03/20/2015] [Accepted: 03/23/2015] [Indexed: 12/03/2022] Open
Abstract
Avian infectious bronchitis (IB) is a widely distributed poultry disease that has huge economic impact on poultry industry. The continuous emergence of new IBV genotypes and lack of cross protection among different IBV genotypes have been an important challenge. Although live attenuated IB vaccines remarkably induce potent immune response, the potential risk of reversion to virulence, neutralization by the maternal antibodies, and recombination and mutation events are important concern on their usage. On the other hand, inactivated vaccines induce a weaker immune response and may require multiple dosing and/or the use of adjuvants that probably have potential safety risks and increased economic burdens. Consequently, alternative IB vaccines are widely sought. Recent advances in recombinant DNA technology have resulted in experimental IB vaccines that show promise in antibody and T-cells responses, comparable to live attenuated vaccines. Recombinant DNA vaccines have also been enhanced to target multiple serotypes and their efficacy has been improved using delivery vectors, nanoadjuvants, and in ovo vaccination approaches. Although most recombinant IB DNA vaccines are yet to be licensed, it is expected that these types of vaccines may hold sway as future vaccines for inducing a cross protection against multiple IBV serotypes.
Collapse
Affiliation(s)
- Faruku Bande
- Department of Veterinary Pathology and Microbiology, Faculty of Veterinary Medicine, Universiti Putra Malaysia (UPM), 43400 Serdang, Selangor, Malaysia
- Department of Veterinary Services, Ministry of Animal Health and Fisheries Development, PMB 2109, Usman Faruk Secretariat, Sokoto 840221, Sokoto State, Nigeria
| | - Siti Suri Arshad
- Department of Veterinary Pathology and Microbiology, Faculty of Veterinary Medicine, Universiti Putra Malaysia (UPM), 43400 Serdang, Selangor, Malaysia
| | - Mohd Hair Bejo
- Department of Veterinary Pathology and Microbiology, Faculty of Veterinary Medicine, Universiti Putra Malaysia (UPM), 43400 Serdang, Selangor, Malaysia
- Laboratory of Vaccine and Immunotherapeutics, Institute of Bioscience, Universiti Putra Malaysia (UPM), 43400 Serdang, Selangor, Malaysia
| | - Hassan Moeini
- Department of Virus-Associated Tumours (F100), German Cancer Research Centre, Im Neuenheimer Feld 242, 69120 Heidelberg, Germany
| | - Abdul Rahman Omar
- Department of Veterinary Pathology and Microbiology, Faculty of Veterinary Medicine, Universiti Putra Malaysia (UPM), 43400 Serdang, Selangor, Malaysia
| |
Collapse
|
22
|
Wickramasinghe INA, van Beurden SJ, Weerts EAWS, Verheije MH. The avian coronavirus spike protein. Virus Res 2014; 194:37-48. [PMID: 25451062 PMCID: PMC7114429 DOI: 10.1016/j.virusres.2014.10.009] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2014] [Revised: 10/06/2014] [Accepted: 10/07/2014] [Indexed: 02/07/2023]
Abstract
Avian coronaviruses of the genus Gammacoronavirus are represented by infectious bronchitis virus (IBV), the coronavirus of chicken. IBV causes a highly contagious disease affecting the respiratory tract and, depending on the strain, other tissues including the reproductive and urogenital tract. The control of IBV in the field is hampered by the many different strains circulating worldwide and the limited protection across strains due to serotype diversity. This diversity is believed to be due to the amino acid variation in the S1 domain of the major viral attachment protein spike. In the last years, much effort has been undertaken to address the role of the avian coronavirus spike protein in the various steps of the virus' live cycle. Various models have successfully been developed to elucidate the contribution of the spike in binding of the virus to cells, entry of cell culture cells and organ explants, and the in vivo tropism and pathogenesis. This review will give an overview of the literature on avian coronavirus spike proteins with particular focus on our recent studies on binding of recombinant soluble spike protein to chicken tissues. With this, we aim to summarize the current understanding on the avian coronavirus spike's contribution to host and tissue predilections, pathogenesis, as well as its role in therapeutic and protective interventions.
Collapse
Affiliation(s)
- I N Ambepitiya Wickramasinghe
- Department of Pathobiology, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 1, 3584CL Utrecht, The Netherlands
| | - S J van Beurden
- Department of Pathobiology, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 1, 3584CL Utrecht, The Netherlands
| | - E A W S Weerts
- Department of Pathobiology, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 1, 3584CL Utrecht, The Netherlands
| | - M H Verheije
- Department of Pathobiology, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 1, 3584CL Utrecht, The Netherlands.
| |
Collapse
|