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Goraichuk IV, Torchetti MK, Killian ML, Kapczynski DR, Sary K, Kulkarni A, Suarez DL. Introduction of Avian metapneumovirus subtype A to the United States: molecular insights and implications. Front Microbiol 2024; 15:1428248. [PMID: 39035438 PMCID: PMC11258015 DOI: 10.3389/fmicb.2024.1428248] [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: 05/06/2024] [Accepted: 06/12/2024] [Indexed: 07/23/2024] Open
Abstract
Avian metapneumovirus (aMPV) poses a significant threat to the poultry industry worldwide, primarily affecting turkeys and chickens. The recent detection of aMPV-A and -B subtypes in the United States marks a significant shift after a prolonged period free of aMPV following the eradication of the previously circulating subtype C. Hence, the demand for molecular diagnostic tests for aMPV has arisen due to their limited availability in the US market. In this study, we present the molecular characterization based on the complete genome sequence of aMPV subtype A, which was detected in the US for the first time. Four RT-qPCR positive samples were subjected to next-generation sequencing analysis, resulting in the assembly of one complete and one near-complete genome sequences. Phylogenetic analysis revealed that the isolated strains clustered within the aMPV-A subtype and were most closely related to recent Mexican strains. A detailed amino acid analysis identified unique mutations in the G gene of the US isolates compared to Mexican strains. Additionally, we compared the performance, cross-reactivity, and limit of detection of our revised aMPV subtype-specific RT-qPCR test with two commercial kits, demonstrating similar detection and subtyping capabilities. These findings highlight the importance of accurate diagnostic methods for disease management in the poultry industry, provide valuable insights into the epidemiology of aMPV, and underscore the need for continued vigilance and surveillance to mitigate its impact on poultry production.
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Affiliation(s)
- Iryna V. Goraichuk
- Southeast Poultry Research Laboratory, U.S. National Poultry Research Center, Agricultural Research Service, U.S. Department of Agriculture, Athens, GA, United States
| | - Mia K. Torchetti
- National Veterinary Services Laboratories, Animal and Plant Health Inspection Service, U.S. Department of Agriculture, Ames, IA, United States
| | - Mary L. Killian
- National Veterinary Services Laboratories, Animal and Plant Health Inspection Service, U.S. Department of Agriculture, Ames, IA, United States
| | - Darrell R. Kapczynski
- Southeast Poultry Research Laboratory, U.S. National Poultry Research Center, Agricultural Research Service, U.S. Department of Agriculture, Athens, GA, United States
| | - Kathleen Sary
- Georgia Poultry Laboratory Network, Gainesville, GA, United States
| | - Arun Kulkarni
- Georgia Poultry Laboratory Network, Gainesville, GA, United States
| | - David L. Suarez
- Southeast Poultry Research Laboratory, U.S. National Poultry Research Center, Agricultural Research Service, U.S. Department of Agriculture, Athens, GA, United States
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Cui Y, Li S, Xu W, Li Y, Xie J, Wang D, Guo J, Zhou J, Feng X, Hou L, Liu J. A Receptor Integrin β1 Promotes Infection of Avian Metapneumovirus Subgroup C by Recognizing a Viral Fusion Protein RSD Motif. Int J Mol Sci 2024; 25:829. [PMID: 38255903 PMCID: PMC10815723 DOI: 10.3390/ijms25020829] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 12/30/2023] [Accepted: 01/06/2024] [Indexed: 01/24/2024] Open
Abstract
Avian metapneumovirus subgroup C (aMPV/C) causes respiratory diseases and egg dropping in chickens and turkeys, resulting in severe economic losses to the poultry industry worldwide. Integrin β1 (ITGB1), a transmembrane cell adhesion molecule, is present in various cells and mediates numerous viral infections. Herein, we demonstrate that ITGB1 is essential for aMPV/C infection in cultured DF-1 cells, as evidenced by the inhibition of viral binding by EDTA blockade, Arg-Ser-Asp (RSD) peptide, monoclonal antibody against ITGB1, and ITGB1 short interfering (si) RNA knockdown in cultured DF-1 cells. Simulation of the binding process between the aMPV/C fusion (F) protein and avian-derived ITGB1 using molecular dynamics showed that ITGB1 may be a host factor benefiting aMPV/C attachment or internalization. The transient expression of avian ITGB1-rendered porcine and feline non-permissive cells (DQ cells and CRFK cells, respectively) is susceptible to aMPV/C infection. Kinetic replication of aMPV/C in siRNA-knockdown cells revealed that ITGB1 plays an important role in aMPV/C infection at the early stage (attachment and internalization). aMPV/C was also able to efficiently infect human non-small cell lung cancer (A549) cells. This may be a consequence of the similar structures of both metapneumovirus F protein-specific motifs (RSD for aMPV/C and RGD for human metapneumovirus) recognized by ITGB1. Overexpression of avian-derived ITGB1 and human-derived ITGB1 in A549 cells enhanced aMPV/C infectivity. Taken together, this study demonstrated that ITGB1 acts as an essential receptor for aMPV/C attachment and internalization into host cells, facilitating aMPV/C infection.
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Affiliation(s)
- Yongqiu Cui
- College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China; (Y.C.); (S.L.); (W.X.); (Y.L.); (J.X.); (D.W.); (J.G.); (J.Z.); (X.F.)
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou 225009, China
| | - Siting Li
- College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China; (Y.C.); (S.L.); (W.X.); (Y.L.); (J.X.); (D.W.); (J.G.); (J.Z.); (X.F.)
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou 225009, China
| | - Weiyin Xu
- College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China; (Y.C.); (S.L.); (W.X.); (Y.L.); (J.X.); (D.W.); (J.G.); (J.Z.); (X.F.)
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou 225009, China
| | - Yeqiu Li
- College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China; (Y.C.); (S.L.); (W.X.); (Y.L.); (J.X.); (D.W.); (J.G.); (J.Z.); (X.F.)
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou 225009, China
| | - Jiali Xie
- College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China; (Y.C.); (S.L.); (W.X.); (Y.L.); (J.X.); (D.W.); (J.G.); (J.Z.); (X.F.)
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou 225009, China
| | - Dedong Wang
- College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China; (Y.C.); (S.L.); (W.X.); (Y.L.); (J.X.); (D.W.); (J.G.); (J.Z.); (X.F.)
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou 225009, China
| | - Jinshuo Guo
- College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China; (Y.C.); (S.L.); (W.X.); (Y.L.); (J.X.); (D.W.); (J.G.); (J.Z.); (X.F.)
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou 225009, China
| | - Jianwei Zhou
- College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China; (Y.C.); (S.L.); (W.X.); (Y.L.); (J.X.); (D.W.); (J.G.); (J.Z.); (X.F.)
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou 225009, China
| | - Xufei Feng
- College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China; (Y.C.); (S.L.); (W.X.); (Y.L.); (J.X.); (D.W.); (J.G.); (J.Z.); (X.F.)
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou 225009, China
| | - Lei Hou
- College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China; (Y.C.); (S.L.); (W.X.); (Y.L.); (J.X.); (D.W.); (J.G.); (J.Z.); (X.F.)
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou 225009, China
| | - Jue Liu
- College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China; (Y.C.); (S.L.); (W.X.); (Y.L.); (J.X.); (D.W.); (J.G.); (J.Z.); (X.F.)
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou 225009, China
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Salles GBC, Pilati GVT, Savi BP, Muniz EC, Dahmer M, Vogt JR, de Lima Neto AJ, Fongaro G. Surveillance of Avian Metapneumovirus in Non-Vaccinated Chickens and Co-Infection with Avian Pathogenic Escherichia coli. Microorganisms 2023; 12:56. [PMID: 38257889 PMCID: PMC10820577 DOI: 10.3390/microorganisms12010056] [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: 11/03/2023] [Revised: 12/21/2023] [Accepted: 12/26/2023] [Indexed: 01/24/2024] Open
Abstract
Brazil is the second largest producer of broiler chicken in the world, and the surveillance of avian pathogens is of great importance for the global economy and nutrition. Avian metapneumovirus (aMPV) infection results in high rates of animal carcass losses due to aerosacculitis and these impacts can be worsened through co-infection with pathogenic bacteria, particularly Escherichia coli (APEC). The present study evaluated the seroprevalence of the main aMPV subtypes in unvaccinated broiler chickens from poultry farms in Brazil, as well as the clinical effects of co-infection with APEC. Blood samples, respiratory swabs, femurs, liver, and spleen of post-mortem broiler chickens were collected from 100 poultry production batches, totaling 1000 samples. The selection of the production batch was based on the history of systemic and respiratory clinical signs. The results indicated that 20% of the lots showed serological evidence of the presence of aMPV, with two lots being positive for aMPV-B. A total of 45% of batches demonstrated co-infection between aMPV and APEC. The results point to the need for viral surveillance, targeted vaccination, and vaccination programs, which could reduce clinical problems and consequently reduce the use of antibiotics to treat bacterial co-infections.
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Affiliation(s)
- Gleidson Biasi Carvalho Salles
- Laboratory of Applied Virology, Department of Microbiology, Immunology and Parasitology, Universidade Federal de Santa Catarina, Florianópolis 88040-900, SC, Brazil; (G.V.T.P.); (B.P.S.); (M.D.)
- Zoetis Industry of Veterinary Products LTDA, São Paulo 04709-11, SP, Brazil; (E.C.M.); (J.R.V.); (A.J.d.L.N.)
| | - Giulia Von Tönnemann Pilati
- Laboratory of Applied Virology, Department of Microbiology, Immunology and Parasitology, Universidade Federal de Santa Catarina, Florianópolis 88040-900, SC, Brazil; (G.V.T.P.); (B.P.S.); (M.D.)
| | - Beatriz Pereira Savi
- Laboratory of Applied Virology, Department of Microbiology, Immunology and Parasitology, Universidade Federal de Santa Catarina, Florianópolis 88040-900, SC, Brazil; (G.V.T.P.); (B.P.S.); (M.D.)
| | - Eduardo Correa Muniz
- Zoetis Industry of Veterinary Products LTDA, São Paulo 04709-11, SP, Brazil; (E.C.M.); (J.R.V.); (A.J.d.L.N.)
| | - Mariane Dahmer
- Laboratory of Applied Virology, Department of Microbiology, Immunology and Parasitology, Universidade Federal de Santa Catarina, Florianópolis 88040-900, SC, Brazil; (G.V.T.P.); (B.P.S.); (M.D.)
| | - Josias Rodrigo Vogt
- Zoetis Industry of Veterinary Products LTDA, São Paulo 04709-11, SP, Brazil; (E.C.M.); (J.R.V.); (A.J.d.L.N.)
| | - Antonio José de Lima Neto
- Zoetis Industry of Veterinary Products LTDA, São Paulo 04709-11, SP, Brazil; (E.C.M.); (J.R.V.); (A.J.d.L.N.)
| | - Gislaine Fongaro
- Laboratory of Applied Virology, Department of Microbiology, Immunology and Parasitology, Universidade Federal de Santa Catarina, Florianópolis 88040-900, SC, Brazil; (G.V.T.P.); (B.P.S.); (M.D.)
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Salles GBC, Pilati GVT, Muniz EC, de Lima Neto AJ, Vogt JR, Dahmer M, Savi BP, Padilha DA, Fongaro G. Trends and Challenges in the Surveillance and Control of Avian Metapneumovirus. Viruses 2023; 15:1960. [PMID: 37766366 PMCID: PMC10535940 DOI: 10.3390/v15091960] [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: 08/21/2023] [Revised: 09/09/2023] [Accepted: 09/12/2023] [Indexed: 09/29/2023] Open
Abstract
Among the respiratory pathogens of birds, the Avian Metapneumovirus (aMPV) is one of the most relevant, as it is responsible for causing infections of the upper respiratory tract and may induce respiratory syndromes. aMPV is capable of affecting the reproductive system of birds, directly impacting shell quality and decreasing egg production. Consequently, this infection can cause disorders related to animal welfare and zootechnical losses. The first cases of respiratory syndromes caused by aMPV were described in the 1970s, and today six subtypes (A, B, C, D, and two more new subtypes) have been identified and are widespread in all chicken and turkey-producing countries in the world, causing enormous economic losses for the poultry industry. Conventionally, immunological techniques are used to demonstrate aMPV infection in poultry, however, the identification of aMPV through molecular techniques helped in establishing the traceability of the virus. This review compiles data on the main aMPV subtypes present in different countries; aMPV and bacteria co-infection; vaccination against aMPV and viral selective pressure, highlighting the strategies used to prevent and control respiratory disease; and addresses tools for viral diagnosis and virus genome studies aiming at improving and streamlining pathogen detection and corroborating the development of new vaccines that can effectively protect herds, preventing viral escapes.
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Affiliation(s)
- Gleidson Biasi Carvalho Salles
- Laboratory of Applied Virology, Department of Microbiology, Immunology and Parasitology, Federal University of Santa Catarina, Florianópolis 88040-900, Brazil; (G.B.C.S.); (G.V.T.P.); (M.D.); (B.P.S.); (D.A.P.)
- Zoetis Industry of Veterinary Products LTDA, São Paulo 04709-111, Brazil; (E.C.M.); (J.R.V.)
| | - Giulia Von Tönnemann Pilati
- Laboratory of Applied Virology, Department of Microbiology, Immunology and Parasitology, Federal University of Santa Catarina, Florianópolis 88040-900, Brazil; (G.B.C.S.); (G.V.T.P.); (M.D.); (B.P.S.); (D.A.P.)
| | - Eduardo Correa Muniz
- Zoetis Industry of Veterinary Products LTDA, São Paulo 04709-111, Brazil; (E.C.M.); (J.R.V.)
| | | | - Josias Rodrigo Vogt
- Zoetis Industry of Veterinary Products LTDA, São Paulo 04709-111, Brazil; (E.C.M.); (J.R.V.)
| | - Mariane Dahmer
- Laboratory of Applied Virology, Department of Microbiology, Immunology and Parasitology, Federal University of Santa Catarina, Florianópolis 88040-900, Brazil; (G.B.C.S.); (G.V.T.P.); (M.D.); (B.P.S.); (D.A.P.)
| | - Beatriz Pereira Savi
- Laboratory of Applied Virology, Department of Microbiology, Immunology and Parasitology, Federal University of Santa Catarina, Florianópolis 88040-900, Brazil; (G.B.C.S.); (G.V.T.P.); (M.D.); (B.P.S.); (D.A.P.)
| | - Dayane Azevedo Padilha
- Laboratory of Applied Virology, Department of Microbiology, Immunology and Parasitology, Federal University of Santa Catarina, Florianópolis 88040-900, Brazil; (G.B.C.S.); (G.V.T.P.); (M.D.); (B.P.S.); (D.A.P.)
| | - Gislaine Fongaro
- Laboratory of Applied Virology, Department of Microbiology, Immunology and Parasitology, Federal University of Santa Catarina, Florianópolis 88040-900, Brazil; (G.B.C.S.); (G.V.T.P.); (M.D.); (B.P.S.); (D.A.P.)
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A. Abd El-Ghany W. Avian Metapneumovirus Infection in Poultry Flocks: A Review of Current Knowledge. PERTANIKA JOURNAL OF TROPICAL AGRICULTURAL SCIENCE 2023; 46:971-1002. [DOI: 10.47836/pjtas.46.3.14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
Avian metapneumovirus (aMPV) is one of the respiratory viruses that cause global economic losses in poultry production systems. Therefore, it was important to design a comprehensive review article that gives more information about aMPV infection regarding the distribution, susceptibility, transmission, pathogenesis, pathology, diagnosis, and prevention. The aMPV infection is characterized by respiratory and reproductive disorders in turkeys and chickens. The disease condition is turkey rhinotracheitis in turkeys and swollen head syndrome in chickens. Infection with aMPV is associated with worldwide economic losses, especially in complications with other infections or poor environmental conditions. The genus Metapneumovirus is a single-stranded enveloped RNA virus and contains A, B, C, and D subtypes. Meat and egg-type birds are susceptible to aMPV infection. The virus can transmit through aerosol, direct contact, mechanical, and vertical routes. The disease condition is characterized by respiratory manifestations, a decrease in egg production, growth retardation, increasing morbidity rate, and sometimes nervous signs and a high mortality rate, particularly in concurrent infections. Definitive diagnosis of aMPV is based mainly on isolation and identification methods, detection of the viral DNA, as well as seroconversion. Prevention of aMPV infection depends on adopting biosecurity measures and vaccination using inactivated, live attenuated, and recombinant or DNA vaccines.
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Youn HN, Kim MS, Ju HS, Park DH, Kim KJ, Noh JY, Song CS. RESEARCH NOTE: Evaluation of the cross protective efficacy of a subtype B aMPV vaccine against virulent subtype A aMPV by different administration routes. Poult Sci 2022; 102:102372. [PMID: 37043953 PMCID: PMC10140072 DOI: 10.1016/j.psj.2022.102372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 05/19/2022] [Accepted: 11/29/2022] [Indexed: 12/12/2022] Open
Abstract
Avian metapneumovirus (aMPV) causes respiratory and reproductive diseases in birds, including chickens. In the chicken industry, live vaccines against aMPV subtypes A and B, which are the major aMPV subtypes, are widely used to control disease caused by aMPV. In this study, we evaluated the cross protective efficacy of a live aMPV subtype B vaccine administered via 3 different routes (nasal, spray, and oral) against virulent aMPV subtype A in chickens. At 3 wk after vaccination of 1-wk-old specific-pathogen-free chickens, we measured the serological responses. On the same day, we challenged the birds with aMPV subtype A. Protection was evaluated by viral gene detection and histopathological examination at 3 and 5 days postchallenge. Although there were differences in the serological responses according to administration route, all vaccinated birds showed complete protection at 5 days postchallenge. Regardless of administration route, genome of challenge virus was not detected in vaccinated group, and there were significant differences between vaccinated birds and control group. Overall, our results demonstrated that a subtype B aMPV vaccine can provide cross protection against virulent subtype A aMPV in chickens.
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Wang J, Hou L, Wei L, Yan X, Zhu S, Quan R, Li Z, Wang D, Jiang H, Song J, Cui Y, Liu J. Characterization of avain metapneumovirus subgroup C isolated from chickens in Beijing, China. Poult Sci 2022; 102:102250. [PMID: 36435163 PMCID: PMC9700036 DOI: 10.1016/j.psj.2022.102250] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Accepted: 10/11/2022] [Indexed: 11/06/2022] Open
Abstract
Avian metapneumovirus (aMPV) is an important causative agent that causes acute respiratory disease and egg-dropping in chickens and turkeys. Here, we characterized an aMPV subgroup C (aMPV/C) from 320-day-old broiler breeder chickens with severe respiratory diseases in Beijing, China, as evidenced by RT-PCR typing and confirmation of the nucleoprotein (N) gene sequence. The N gene sequence of the aMPV/C strain (designated BJ17) exhibited no deletions or insertions and possessed 94.6% to 99.6% identity to those of published aMPV/C isolates. The phylogenetic tree of the nucleotide sequences constructed using the neighbor-joining clustering method showed that the BJ17 strain formed one cluster with other aMPV/C viruses and formed one subcluster with published Chinese aMPV/C isolates regardless of Muscovy duck or chicken origins. Comparative analysis of the N proteins showed that a unique amino acid residue D at position 110 might be associated with regional distribution due to its occurrence in all the Chinese aMPV/C isolates only. Strain BJ17 was successfully isolated by cultured Vero cell passage and further inoculated in 3-wk-old specific-pathogen-free chickens for the examination of pathogenicity. Animal experimental results showed that BJ17-inoculated chickens had severe respiratory diseases and inflammatory lesions, as demonstrated by pathological changes and aMPV antigen in the nasal turbinate, tracheae, and lung tissues. These results enrich the available information regarding the epidemiology and pathogenicity of aMPV/C in chickens, which may facilitate the development of effective measures against aMPV/C infection in China.
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Affiliation(s)
- Jing Wang
- Beijing Key Laboratory for Prevention and Control of Infectious Diseases in Livestock and Poultry, Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Haidian District, Beijing, China
| | - Lei Hou
- College of Veterinary Medicine, Yangzhou University, Yangzhou, China,Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, China
| | - Li Wei
- Beijing Key Laboratory for Prevention and Control of Infectious Diseases in Livestock and Poultry, Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Haidian District, Beijing, China
| | - Xv Yan
- Beijing Key Laboratory for Prevention and Control of Infectious Diseases in Livestock and Poultry, Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Haidian District, Beijing, China
| | - Shanshan Zhu
- Beijing Key Laboratory for Prevention and Control of Infectious Diseases in Livestock and Poultry, Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Haidian District, Beijing, China
| | - Rong Quan
- Beijing Key Laboratory for Prevention and Control of Infectious Diseases in Livestock and Poultry, Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Haidian District, Beijing, China
| | - Zixuan Li
- Beijing Key Laboratory for Prevention and Control of Infectious Diseases in Livestock and Poultry, Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Haidian District, Beijing, China
| | - Dan Wang
- Beijing Key Laboratory for Prevention and Control of Infectious Diseases in Livestock and Poultry, Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Haidian District, Beijing, China
| | - Haijun Jiang
- Beijing Key Laboratory for Prevention and Control of Infectious Diseases in Livestock and Poultry, Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Haidian District, Beijing, China
| | - Jiangwei Song
- Beijing Key Laboratory for Prevention and Control of Infectious Diseases in Livestock and Poultry, Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Haidian District, Beijing, China
| | - Yongqiu Cui
- College of Veterinary Medicine, Yangzhou University, Yangzhou, China
| | - Jue Liu
- College of Veterinary Medicine, Yangzhou University, Yangzhou, China,Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, China,Corresponding author:
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Zoonotic Origins of Human Metapneumovirus: A Journey from Birds to Humans. Viruses 2022; 14:v14040677. [PMID: 35458407 PMCID: PMC9028271 DOI: 10.3390/v14040677] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 03/23/2022] [Accepted: 03/23/2022] [Indexed: 01/13/2023] Open
Abstract
Metapneumoviruses, members of the family Pneumoviridae, have been identified in birds (avian metapneumoviruses; AMPV’s) and humans (human metapneumoviruses; HMPV’s). AMPV and HMPV are closely related viruses with a similar genomic organization and cause respiratory tract illnesses in birds and humans, respectively. AMPV can be classified into four subgroups, A–D, and is the etiological agent of turkey rhinotracheitis and swollen head syndrome in chickens. Epidemiological studies have indicated that AMPV also circulates in wild bird species which may act as reservoir hosts for novel subtypes. HMPV was first discovered in 2001, but retrospective studies have shown that HMPV has been circulating in humans for at least 50 years. AMPV subgroup C is more closely related to HMPV than to any other AMPV subgroup, suggesting that HMPV has evolved from AMPV-C following zoonotic transfer. In this review, we present a historical perspective on the discovery of metapneumoviruses and discuss the host tropism, pathogenicity, and molecular characteristics of the different AMPV and HMPV subgroups to provide increased focus on the necessity to better understand the evolutionary pathways through which HMPV emerged as a seasonal endemic human respiratory virus.
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Ball C, Manswr B, Herrmann A, Lemiere S, Ganapathy K. Avian metapneumovirus subtype B vaccination in commercial broiler chicks: heterologous protection and selected host transcription responses to subtype A or B challenge. Avian Pathol 2022; 51:181-196. [PMID: 35099352 DOI: 10.1080/03079457.2022.2036697] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Avian metapneumovirus (aMPV) causes respiratory disease and drops in egg production in chicken, and is routinely controlled by vaccination. However, the host's immune response to virulent challenge in vaccinated or unvaccinated broiler chickens is poorly characterised. We show that subtype B vaccination offers heterologous (subtype A challenge) and homologous (subtype B challenge) protection. Subtype B challenge causes significantly greater humoral antibody titres in vaccinated and unvaccinated chickens. In turbinate and lung tissues of unvaccinated-challenged chickens, IgA and IgY mRNA transcription was significantly up-regulated after subtype B challenge compared to subtype A. Cellular immunity (CD8-α and CD8-β) gene transcripts were significantly up-regulated during early and later stages of infection from subtype B or subtype A respectively. Immune gene transcriptional responses (IL-1β, IL-6 and IL-18) were significantly up-regulated after challenge. Gene transcription results have shown that mRNA expression levels of CD8-α, CD8-β, TLR3 and IL-6, particularly in turbinate and trachea tissues, are useful parameters to include in future aMPV vaccination-challenge studies.
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Affiliation(s)
- Christopher Ball
- Institute of Infection and Global Health, University of Liverpool, Cheshire, UK
| | - Basim Manswr
- Institute of Infection and Global Health, University of Liverpool, Cheshire, UK.,Faculty of Veterinary Medicine, Diyala University, Iraq
| | - Andreas Herrmann
- Boehringer Ingelheim, 69007 Lyon, 29 avenue Tony Garnier, France
| | - Stephane Lemiere
- Boehringer Ingelheim, 69007 Lyon, 29 avenue Tony Garnier, France
| | - Kannan Ganapathy
- Institute of Infection and Global Health, University of Liverpool, Cheshire, UK
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Kaboudi K, Lachheb J. Avian metapneumovirus infection in turkeys: a review on turkey rhinotracheitis. J APPL POULTRY RES 2021. [DOI: 10.1016/j.japr.2021.100211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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11
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Avian Metapneumovirus Subgroup C Induces Mitochondrial Antiviral Signaling Protein Degradation through the Ubiquitin-Proteasome Pathway. Viruses 2021; 13:v13101990. [PMID: 34696420 PMCID: PMC8537000 DOI: 10.3390/v13101990] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 09/30/2021] [Accepted: 10/01/2021] [Indexed: 12/12/2022] Open
Abstract
The mitochondrial antiviral signaling (MAVS) protein, a critical adapter, links the upstream recognition of viral RNA to downstream antiviral signal transduction. However, the interaction mechanism between avian metapneumovirus subgroup C (aMPV/C) infection and MAVS remains unclear. Here, we confirmed that aMPV/C infection induced a reduction in MAVS expression in Vero cells in a dose-dependent manner, and active aMPV/C replication was required for MAVS decrease. We also found that the reduction in MAVS occurred at the post-translational level rather than at the transcriptional level. Different inhibitors were used to examine the effect of proteasome or autophagy on the regulation of MAVS. Treatment with a proteasome inhibitor MG132 effectively blocked MAVS degradation. Moreover, we demonstrated that MAVS mainly underwent K48-linked ubiquitination in the presence of MG132 in aMPV/C-infected cells, with amino acids 363, 462, and 501 of MAVS being pivotal sites in the formation of polyubiquitin chains. Finally, E3 ubiquitin ligases for MAVS degradation were screened and identified and RNF5 targeting MAVS at Lysine 363 and 462 was shown to involve in MAVS degradation in aMPV/C-infected Vero cells. Overall, these results reveal the molecular mechanism underlying aMPV/C infection-induced MAVS degradation by the ubiquitin-proteasome pathway.
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12
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Xu W, Suderman M, Koziuk J, Ojkic D, Berhane Y. Development of A recombinant nucleocapsid based indirect ELISA for the detection of antibodies to avian metapneumovirus subtypes, A, B, and C. Vet Immunol Immunopathol 2020; 231:110151. [PMID: 33227621 DOI: 10.1016/j.vetimm.2020.110151] [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: 04/28/2020] [Revised: 06/29/2020] [Accepted: 11/07/2020] [Indexed: 10/23/2022]
Abstract
Nucleocapsid (N) protein is the most highly expressed of all avian metapneumovirus (aMPV) viral proteins and stimulates a substantial immune response in infected animals. Codon optimized recombinant N (rec-N) protein from aMPV subtypes A, B, and C were expressed using the baculoviral expression system in Trichoplusia ni (Tni) insect cells. A mixture of purified rec-N antigens from each subtype was used as a coating antigen and was evaluated in indirect ELISA (iELISA) to assess antibody response in serum samples collected from experimentally infected chickens and turkeys with different aMPV subtypes. Also, archived field serum samples that were collected from different poultry submissions were used. Receiver operating characteristic (ROC) analysis was performed using chicken and turkey serum samples that were confirmed by indirect fluorescent antibody (IFA) test for serostatus (positive n = 270, negative n = 610). The ROC analysis showed sensitivity and specificity of 97 % at a cut-off value of 0.25. The rec-N iELISA was compared with a commercial whole virus-based APV kit. The rec-N iELISA showed comparable results in detecting antibody response in aMPV infected chicken sera but was more sensitive in detecting early antibody response in aMPV infected turkey serum samples. Our results further confirm the presence of aMPV antibodies in Canadian domestic poultry populations. The developed aMPV-rec N iELISA offers a safe and valuable alternative to whole virus-based iELISA for serodiagnosis and seroepidemiological surveillance of the disease in domestic poultry.
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Affiliation(s)
- Wanhong Xu
- National Centre for Foreign Animal Disease, 1015 Arlington Street, Winnipeg, MB, R3E 3M4, Canada
| | - Matthew Suderman
- National Centre for Foreign Animal Disease, 1015 Arlington Street, Winnipeg, MB, R3E 3M4, Canada
| | - Janice Koziuk
- National Centre for Foreign Animal Disease, 1015 Arlington Street, Winnipeg, MB, R3E 3M4, Canada
| | - Davor Ojkic
- Animal Health Laboratory, University of Guelph, Guelph, Ontario, N1H 6R8, Canada
| | - Yohannes Berhane
- National Centre for Foreign Animal Disease, 1015 Arlington Street, Winnipeg, MB, R3E 3M4, Canada; Department of Animal Science, University of Manitoba, Winnipeg, MB, R3T 2N2, Canada.
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13
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Efficacy of a novel avian metapneumovirus live vaccine candidate based on vaccination route and age. Poult Sci 2020; 100:100528. [PMID: 33518307 PMCID: PMC7936137 DOI: 10.1016/j.psj.2020.07.021] [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: 12/30/2019] [Revised: 05/29/2020] [Accepted: 07/21/2020] [Indexed: 11/22/2022] Open
Abstract
This article describes a series of animal studies for the development of an avian metapneumovirus (aMPV) live vaccine. Although aMPV causes continual economic loss in the poultry industry, there are no live aMPV vaccines available in Korea. Furthermore, information is limited with respect to standard field practices for vaccinations at an early age. Here, the development of an aMPV live vaccine was attempted, and its efficacy was investigated with respect to the vaccination route and age to develop a method for controlling aMPV. Before vaccine development, an animal challenge model was established using the aMPV field isolate to identify the most effective time and site for collecting samples for evaluation. After attenuation of the virulent aMPV in Vero cells, a safety and efficacy test was conducted for the vaccine candidate. As a novel aMPV live vaccine candidate, aMPV K655/07HP displayed sufficient safety in day-old chicks with 10 vaccine doses. The efficacy test using 1-week-old chicks showed weaker humoral immune response than that in 4-week-old chicks. However, the candidate vaccine provided complete protection against infection caused by the challenge virus for all ages of vaccinated chicks. In conclusion, an effective aMPV challenge model was established for studying aMPV in chickens, which offered important, insightful information. The safety and efficacy study suggested that the new aMPV candidate vaccine could be used to effectively reduce the economic losses incurred because of aMPV infection.
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14
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Current scenario of viral diseases in Turkish poultry industry. WORLD POULTRY SCI J 2019. [DOI: 10.1017/s0043933919000606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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15
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16
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Brown PA, Allée C, Courtillon C, Szerman N, Lemaitre E, Toquin D, Mangart JM, Amelot M, Eterradossi N. Host specificity of avian metapneumoviruses. Avian Pathol 2019; 48:311-318. [DOI: 10.1080/03079457.2019.1584390] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Paul A. Brown
- VIPAC Unit (French Agency for Food, Environmental and Occupational Health Safety), Ploufragan-Plouzané-Niort Laboratory, Ploufragan, France
| | - Chantal Allée
- VIPAC Unit (French Agency for Food, Environmental and Occupational Health Safety), Ploufragan-Plouzané-Niort Laboratory, Ploufragan, France
| | - Céline Courtillon
- VIPAC Unit (French Agency for Food, Environmental and Occupational Health Safety), Ploufragan-Plouzané-Niort Laboratory, Ploufragan, France
| | - Nathan Szerman
- VIPAC Unit (French Agency for Food, Environmental and Occupational Health Safety), Ploufragan-Plouzané-Niort Laboratory, Ploufragan, France
| | - Evelyne Lemaitre
- VIPAC Unit (French Agency for Food, Environmental and Occupational Health Safety), Ploufragan-Plouzané-Niort Laboratory, Ploufragan, France
| | - Didier Toquin
- VIPAC Unit (French Agency for Food, Environmental and Occupational Health Safety), Ploufragan-Plouzané-Niort Laboratory, Ploufragan, France
| | - Jean-Michel Mangart
- SELEAC Unit Anses (French Agency for Food, Environmental and Occupational Health Safety), Ploufragan-Plouzané-Niort Laboratory, Ploufragan, France
| | - Michel Amelot
- SELEAC Unit Anses (French Agency for Food, Environmental and Occupational Health Safety), Ploufragan-Plouzané-Niort Laboratory, Ploufragan, France
| | - Nicolas Eterradossi
- VIPAC Unit (French Agency for Food, Environmental and Occupational Health Safety), Ploufragan-Plouzané-Niort Laboratory, Ploufragan, France
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17
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Bayraktar E, Umar S, Yilmaz A, Turan N, Franzo G, Tucciarone CM, Cecchinato M, Cakan B, Iqbal M, Yilmaz H. First Molecular Characterization of Avian Metapneumovirus (aMPV) in Turkish Broiler Flocks. Avian Dis 2018; 62:425-430. [PMID: 31119927 DOI: 10.1637/11915-061818-resnote.1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Indexed: 11/05/2022]
Abstract
Viral respiratory diseases, including avian metapneumovirus (aMPV), have a significant economic impact on poultry industries. The frequency and genotype diversity of aMPV in Turkish broiler flocks is not known at present. The aim of this study was to report the first molecular identification and phylogeny of aMPV, which is circulating in Turkish broiler flocks. Trachea tissue samples and tracheal swabs were collected from 110 broiler flocks distributed in different geographical regions in Turkey between March 2017 and March 2018. Detection of aMPV was confirmed with the use of universal reverse transcriptase (RT) PCR, and eight (7.2%) broiler farms were positive for aMPV. Sequence analysis of the G gene revealed the exclusive presence of subtype B viruses. Three field isolates clustered closely with a 2002 Israel isolate, indicating a potential transmission route between these two countries and through the Middle East. The remaining five field isolates were closely related to a vaccine strain, even though broiler flocks in Turkey are not routinely vaccinated against aMPV. Therefore, we speculate these five isolates could have originated from nearby vaccinated turkey farms. Additionally, the presence of some nucleotide substitutions compared to the reference vaccine sequence suggests prolonged circulation and evolution of the original vaccine virus or a vaccine subpopulation was selected under field conditions. This evidence emphasizes the need for further detailed and more systemic approaches to evaluate aMPV spread and evolution in order to design effective control strategies.
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Affiliation(s)
- E Bayraktar
- CEVA Animal Health, Poultry Section, Istanbul, Turkey
| | - S Umar
- Veterinary Faculty, Department of Virology, University of Istanbul-Cerrahpas_a, Avcilar, 34320, Istanbul, Turkey
| | - A Yilmaz
- Veterinary Faculty, Department of Virology, University of Istanbul-Cerrahpas_a, Avcilar, 34320, Istanbul, Turkey
| | - N Turan
- Veterinary Faculty, Department of Virology, University of Istanbul-Cerrahpas_a, Avcilar, 34320, Istanbul, Turkey
| | - G Franzo
- Department of Animal Medicine, Production and Health (MAPS), University of Padua, Viale dell'Università 16, 35020 Legnaro (PD), Italy
| | - C M Tucciarone
- Department of Animal Medicine, Production and Health (MAPS), University of Padua, Viale dell'Università 16, 35020 Legnaro (PD), Italy
| | - M Cecchinato
- Department of Animal Medicine, Production and Health (MAPS), University of Padua, Viale dell'Università 16, 35020 Legnaro (PD), Italy
| | - B Cakan
- CEVA Animal Health, Poultry Section, Istanbul, Turkey
| | - M Iqbal
- The Pirbright Institute, United Kingdom
| | - H Yilmaz
- Veterinary Faculty, Department of Virology, University of Istanbul-Cerrahpas_a, Avcilar, 34320, Istanbul, Turkey,
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18
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Jardine CM, Parmley EJ, Buchanan T, Nituch L, Ojkic D. Avian metapneumovirus subtype C in Wild Waterfowl in Ontario, Canada. Transbound Emerg Dis 2018; 65:1098-1102. [DOI: 10.1111/tbed.12832] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Indexed: 11/29/2022]
Affiliation(s)
- C. M. Jardine
- Department of Pathobiology; University of Guelph; Guelph ON Canada
- Department of Pathobiology; Canadian Wildlife Health Cooperative; University of Guelph; Guelph ON Canada
| | - E. J. Parmley
- Department of Pathobiology; Canadian Wildlife Health Cooperative; University of Guelph; Guelph ON Canada
| | - T. Buchanan
- Ontario Ministry of Natural Resources and Forestry; Trent University; Peterborough ON Canada
| | - L. Nituch
- Ontario Ministry of Natural Resources and Forestry; Trent University; Peterborough ON Canada
| | - D. Ojkic
- Animal Health Laboratory; University of Guelph; Guelph ON Canada
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19
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Brown Jordan A, Gongora V, Hartley D, Oura C. A Review of Eight High-Priority, Economically Important Viral Pathogens of Poultry within the Caribbean Region. Vet Sci 2018; 5:E14. [PMID: 29373488 PMCID: PMC5876562 DOI: 10.3390/vetsci5010014] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Revised: 01/17/2018] [Accepted: 01/23/2018] [Indexed: 02/07/2023] Open
Abstract
Viral pathogens cause devastating economic losses in poultry industries worldwide. The Caribbean region, which boasts some of the highest rates of poultry consumption in the world, is no exception. This review summarizes evidence for the circulation and spread of eight high-priority, economically important poultry viruses across the Caribbean region. Avian influenza virus (AIV), infectious bronchitis virus (IBV), Newcastle disease virus (NDV), infectious laryngotracheitis virus (ILTV), avian metapneumovirus (aMPV), infectious bursal disease virus (IBDV), fowl adenovirus group 1 (FADV Gp1), and egg drop syndrome virus (EDSV) were selected for review. This review of serological, molecular, and phylogenetic studies across Caribbean countries reveals evidence for sporadic outbreaks of respiratory disease caused by notifiable viral pathogens (AIV, IBV, NDV, and ILTV), as well as outbreaks of diseases caused by immunosuppressive viral pathogens (IBDV and FADV Gp1). This review highlights the need to strengthen current levels of surveillance and reporting for poultry diseases in domestic and wild bird populations across the Caribbean, as well as the need to strengthen the diagnostic capacity and capability of Caribbean national veterinary diagnostic laboratories.
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Affiliation(s)
- Arianne Brown Jordan
- Department of Basic Veterinary Sciences, School of Veterinary Medicine, The University of the West Indies (St. Augustine), Eric Williams Medical Sciences Complex, Mount Hope, Trinidad and Tobago.
| | | | - Dane Hartley
- Veterinary Services Laboratory, Guyana Livestock Development Authority, Agriculture Road, Mon Repos, East Coast Demerara.
| | - Christopher Oura
- Department of Basic Veterinary Sciences, School of Veterinary Medicine, The University of the West Indies (St. Augustine), Eric Williams Medical Sciences Complex, Mount Hope, Trinidad and Tobago.
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20
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Brown Jordan A, Sookhoo J, Blake L, Crooks P, Mohammed Z, Molawatti-Bisnath J, Carrington CVF, Oura CAL. Serological evidence for eight globally important poultry viruses in Trinidad & Tobago. Prev Vet Med 2017; 149:75-81. [PMID: 29290303 DOI: 10.1016/j.prevetmed.2017.11.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Revised: 11/03/2017] [Accepted: 11/06/2017] [Indexed: 02/07/2023]
Abstract
Viruses affecting poultry cause significant levels of disease leading to severe economic losses among poultry farmers worldwide. The Americas region continues to be vulnerable to the spread of poultry viruses across the continents and Caribbean island chains. In Trinidad and Tobago (T&T) there is limited information on the viruses circulating in poultry. Many flock are vulnerable to infection and there are occasional outbreaks of disease resulting in high levels of morbidity and mortality. This study aims to identify important viruses of poultry circulating in T&T through a broad-based surveillance approach. Serum samples from 29 layer farms in Trinidad and 14 layer farms in Tobago were collected from the eldest laying hens. Samples were tested from unvaccinated birds for antibodies by enzyme-linked immunosorbent assay (ELISA) against Avian influenza virus (AIV), Infectious bronchitis virus (IBV), Newcastle disease virus (NDV), Infectious laryngotracheitis virus (ILTV), Avian pneumovirus (APV), Infectious bursal disease virus (IBDV), Fowl adenovirus Gp1 (FADV) and Egg drop syndrome virus (EDSV). In Trinidad, the estimated true seroprevalence levels of antibodies were 0% (CI 95%: 0-0%) for AIV, 100% (CI 95%: 97-100%) for IBV, 79.8% (CI 95%: 70.6-86.9%) for NDV, 1% (CI 95%: 0-2.6%) for ILTV, 67.55% (CI 95%: 62.3-72.4%) for APV, 94.93% (CI 95%: 88.0-98.6%) for IBDV, 100% (CI 95%: 99.7-100%) for FADV and 67.8% (CI 95%: 62.4-72.8%) for EDSV. In Tobago, seroprevalence levels were 0% (CI 95%: 0-0%) for AIV, 100% (CI 95%: 95.6-100%) for IBV, 80.5% (CI 95%: 70.1-88.5%) for NDV, 29.9% (CI 95%: 20.8-40.6%) for ILTV, 100% (CI 95%: 97.7-100%) for APV, 97.1% (CI95%: 89.9-100%) for IBDV, 100% (CI 95%: 97.5-100%) for FADV and 100% (CI 95%: 99-100%) for EDSV. The results reveal strong evidence for the circulation of IBV, NDV, APV, IBDV, FADV and EDSV in layer poultry on both islands, as well as ILTV in Tobago.
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Affiliation(s)
- Arianne Brown Jordan
- Department of Basic Veterinary Sciences, School of Veterinary Medicine, The University of the West Indies (St. Augustine), Eric Williams Medical Sciences Complex, Mount Hope, Trinidad and Tobago.
| | - Jamie Sookhoo
- Department of Basic Veterinary Sciences, School of Veterinary Medicine, The University of the West Indies (St. Augustine), Eric Williams Medical Sciences Complex, Mount Hope, Trinidad and Tobago.
| | - Lemar Blake
- Department of Basic Veterinary Sciences, School of Veterinary Medicine, The University of the West Indies (St. Augustine), Eric Williams Medical Sciences Complex, Mount Hope, Trinidad and Tobago.
| | - Paul Crooks
- Division of Food Production and Fisheries, Tobago House of Assembly, Trinidad and Tobago.
| | - Zul Mohammed
- Poultry Surveillance Unit, Animal Production and Health Services Division, Ministry of Agriculture, Land and Fisheries, National Animal Disease Centre, Caroni North Bank Road, Centeno, Trinidad and Tobago
| | - Judy Molawatti-Bisnath
- Poultry Surveillance Unit, Animal Production and Health Services Division, Ministry of Agriculture, Land and Fisheries, National Animal Disease Centre, Caroni North Bank Road, Centeno, Trinidad and Tobago.
| | - Christine V F Carrington
- Department of Preclinical Sciences, Faculty of Medical Sciences, The University of the West Indies, St. Augustine, Trinidad and Tobago.
| | - Christopher A L Oura
- Department of Basic Veterinary Sciences, School of Veterinary Medicine, The University of the West Indies (St. Augustine), Eric Williams Medical Sciences Complex, Mount Hope, Trinidad and Tobago.
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21
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Hou L, Wei L, Zhu S, Wang J, Quan R, Li Z, Liu J. Avian metapneumovirus subgroup C induces autophagy through the ATF6 UPR pathway. Autophagy 2017; 13:1709-1721. [PMID: 28949785 PMCID: PMC5640183 DOI: 10.1080/15548627.2017.1356950] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Revised: 06/16/2017] [Accepted: 07/12/2017] [Indexed: 12/12/2022] Open
Abstract
An increasing number of studies have demonstrated that macroautophagy/autophagy plays an important role in the infectious processes of diverse pathogens. However, it remains unknown whether autophagy is induced in avian metapneumovirus (aMPV)-infected host cells, and, if so, how this occurs. Here, we report that aMPV subgroup C (aMPV/C) induces autophagy in cultured cells. We demonstrated this relationship by detecting classical autophagic features, including the formation of autophagsomes, the presence of GFP-LC3 puncta and the conversation of LC3-I into LC3-II. Also, we used pharmacological regulators and siRNAs targeting ATG7 or LC3 to examine the role of autophagy in aMPV/C replication. The results showed that autophagy is required for efficient replication of aMPV/C. Moreover, infection with aMPV/C promotes autophagosome maturation and induces a complete autophagic process. Finally, the ATF6 pathway, of which one component is the unfolded protein response (UPR), becomes activated in aMPV/C-infected cells. Knockdown of ATF6 inhibited aMPV/C-induced autophagy and viral replication. Collectively, these results not only show that autophagy promotes aMPV/C replication in the cultured cells, but also reveal that the molecular mechanisms underlying aMPV/C-induced autophagy depends on regulation of the ER stress-related UPR pathway.
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Affiliation(s)
- Lei Hou
- Beijing Key Laboratory for Prevention and Control of Infectious Diseases in Livestock and Poultry, Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Li Wei
- Beijing Key Laboratory for Prevention and Control of Infectious Diseases in Livestock and Poultry, Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Shanshan Zhu
- Beijing Key Laboratory for Prevention and Control of Infectious Diseases in Livestock and Poultry, Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Jing Wang
- Beijing Key Laboratory for Prevention and Control of Infectious Diseases in Livestock and Poultry, Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Rong Quan
- Beijing Key Laboratory for Prevention and Control of Infectious Diseases in Livestock and Poultry, Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Zixuan Li
- Beijing Key Laboratory for Prevention and Control of Infectious Diseases in Livestock and Poultry, Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Jue Liu
- Beijing Key Laboratory for Prevention and Control of Infectious Diseases in Livestock and Poultry, Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
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22
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Tucciarone CM, Andreopoulou M, Franzo G, Prentza Z, Chaligiannis I, Cecchinato M. First Identification and Molecular Characterization of Avian metapneumovirus Subtype B from Chickens in Greece. Avian Dis 2017; 61:409-413. [DOI: 10.1637/11631-032017-caser] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Claudia Maria Tucciarone
- Department of Animal Medicine, Production and Health (MAPS), University of Padua, Viale dell'Università 16, 35020 Legnaro (PD), Italy
| | - Marianna Andreopoulou
- Department of Animal Medicine, Production and Health (MAPS), University of Padua, Viale dell'Università 16, 35020 Legnaro (PD), Italy
| | - Giovanni Franzo
- Department of Animal Medicine, Production and Health (MAPS), University of Padua, Viale dell'Università 16, 35020 Legnaro (PD), Italy
| | - Zoi Prentza
- Department of Avian Pathology, Faculty of Veterinary Science, University of Thessaly, Trikalon 224, 43100, Karditsa, Greece
| | - Ilias Chaligiannis
- Directorate of Veterinary Center of Thessaloniki, Ministry of Rural Development and Food, 26th October Street 80, 54627, Thessaloniki, Greece
| | - Mattia Cecchinato
- Department of Animal Medicine, Production and Health (MAPS), University of Padua, Viale dell'Università 16, 35020 Legnaro (PD), Italy
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23
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Paudel S, Shin HJ. Role of trypsin in the replication of Avian metapneumovirus subtype C (strain MN-2a) and its entry into the Vero cells. Mol Cell Probes 2015; 29:485-491. [PMID: 26028611 DOI: 10.1016/j.mcp.2015.05.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2015] [Revised: 05/12/2015] [Accepted: 05/27/2015] [Indexed: 01/12/2023]
Abstract
To understand the molecular mechanisms of Avian metapneumovirus (aMPV) and the requirements involved in the infection and fusion, trypsin treatment was done in the different stages of virus; before infection, during entry and after virus infection followed by aMPV infection. The growth kinetics of aMPV was compared in time dependent manner. The effect of trypsin was found in the later stage of aMPV infection increasing the numbers of infected cells with the significant higher titer of infectious virions to that of trypsin treated before infection, during entry and aMPV. A serine protease inhibitor reduced aMPV replication in a significant way, whereas cysteine peptidase (E-64), aspartic protease (pepstatin A), and metalloprotease (phosphoramidon) inhibitors had no effect on aMPV replication. Inoculation of aMPV on Vero cells expressing the membrane-associated protease TMPRSS2 resulted in higher virus titers than that inoculated on normal Vero cells and is statistically significant (p < 0.05). Also, an inhibitor of clathrin/caveolae-mediated endocytosis had no effect on virus progeny, indicating that aMPV does not use the endocytic pathway for entry but undergoes direct fusion. The effect of lysosomotropic agents was not significant, suggesting that aMPV does not require low-pH environment in endosomes to fuse its envelope with the plasma membrane.
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Affiliation(s)
- Sarita Paudel
- Laboratory of Infectious Diseases, College of Veterinary Medicine, Chungnam National University, Daejeon 305-764, Republic of Korea
| | - Hyun-Jin Shin
- Laboratory of Infectious Diseases, College of Veterinary Medicine, Chungnam National University, Daejeon 305-764, Republic of Korea; Research Institute of Veterinary Medicine, Chungnam National University, Daejeon 305-764, Republic of Korea.
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24
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Madbouly HM, Tamam SM, Hussein AS, Mady W, Arafa AS. Immunomodular effect of fusion gene DNA vaccine of avian metapneumoviruses. J APPL POULTRY RES 2014. [DOI: 10.3382/japr.2014-00963] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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25
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Sun S, Chen F, Cao S, Liu J, Lei W, Li G, Song Y, Lu J, Liu C, Qin J, Li H. Isolation and characterization of a subtype C avian metapneumovirus circulating in Muscovy ducks in China. Vet Res 2014; 45:74. [PMID: 25060776 PMCID: PMC4222263 DOI: 10.1186/s13567-014-0074-y] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2013] [Accepted: 06/19/2014] [Indexed: 11/23/2022] Open
Abstract
Subtype C avian metapneumovirus (aMPV-C), is an important pathogen that can cause egg-drop and acute respiratory diseases in poultry. To date, aMPV-C infection has not been documented in Muscovy ducks in China. Here, we isolated and characterized an aMPV-C, designated S-01, which has caused severe respiratory disease and noticeable egg drop in Muscovy duck flocks in south China since 2010. Electron microscopy showed that the isolate was an enveloped virus exhibiting multiple morphologies with a diameter of 20-500 nm. The S-01 strain was able to produce a typical cytopathic effect (CPE) on Vero cells and cause death in 10- to 11-day-old Muscovy duck embryos. In vivo infection of layer Muscovy ducks with the isolate resulted in typical clinical signs and pathological lesions similar to those seen in the original infected cases. We report the first complete genomic sequence of aMPV-C from Muscovy ducks. A phylogenetic analysis strongly suggested that the S-01 virus belongs to the aMPV-C family, sharing 92.3%-94.3% of nucleotide identity with that of aMPV-C, and was most closely related to the aMPV-C strains isolated from Muscovy ducks in France. The deduced eight main proteins (N, P, M, F, M2, SH, G and L) of the novel isolate shared higher identity with hMPV than with other aMPV (subtypes A, B and D). S-01 could bind a monoclonal antibody against the F protein of hMPV. Together, our results indicate that subtype-C aMPV has been circulating in Muscovy duck flocks in South China, and it is urgent for companies to develop new vaccines to control the spread of the virus in China.
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Affiliation(s)
- Shikai Sun
- Guangdong Enterprise Key Laboratory for Animal Health and Environmental Control, Department of Poultry Diseases, WENS Group Academy, Guangdong WENS FoodStuff Group Co. Ltd, Yunfu, 527439, Guangdong, China
| | - Feng Chen
- College of Animal Science, South China Agricultural University, Guangzhou, 510642, Guangdong, China
| | - Sheng Cao
- Guangdong Enterprise Key Laboratory for Animal Health and Environmental Control, Department of Poultry Diseases, WENS Group Academy, Guangdong WENS FoodStuff Group Co. Ltd, Yunfu, 527439, Guangdong, China
| | - Jiajia Liu
- College of Animal Science, South China Agricultural University, Guangzhou, 510642, Guangdong, China
| | - Wen Lei
- Guangdong Enterprise Key Laboratory for Animal Health and Environmental Control, Department of Poultry Diseases, WENS Group Academy, Guangdong WENS FoodStuff Group Co. Ltd, Yunfu, 527439, Guangdong, China
| | - Guangwei Li
- College of Animal Science, South China Agricultural University, Guangzhou, 510642, Guangdong, China
| | - Yongfeng Song
- Guangdong Enterprise Key Laboratory for Animal Health and Environmental Control, Department of Poultry Diseases, WENS Group Academy, Guangdong WENS FoodStuff Group Co. Ltd, Yunfu, 527439, Guangdong, China
| | - Junpeng Lu
- Guangdong Enterprise Key Laboratory for Animal Health and Environmental Control, Department of Poultry Diseases, WENS Group Academy, Guangdong WENS FoodStuff Group Co. Ltd, Yunfu, 527439, Guangdong, China
| | - Chuang Liu
- Guangdong Enterprise Key Laboratory for Animal Health and Environmental Control, Department of Poultry Diseases, WENS Group Academy, Guangdong WENS FoodStuff Group Co. Ltd, Yunfu, 527439, Guangdong, China
| | - Jianping Qin
- Guangdong Enterprise Key Laboratory for Animal Health and Environmental Control, Department of Poultry Diseases, WENS Group Academy, Guangdong WENS FoodStuff Group Co. Ltd, Yunfu, 527439, Guangdong, China
| | - Haiyan Li
- Guangdong Enterprise Key Laboratory for Animal Health and Environmental Control, Department of Poultry Diseases, WENS Group Academy, Guangdong WENS FoodStuff Group Co. Ltd, Yunfu, 527439, Guangdong, China
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Brown PA, Lemaitre E, Briand FX, Courtillon C, Guionie O, Allée C, Toquin D, Bayon-Auboyer MH, Jestin V, Eterradossi N. Molecular comparisons of full length metapneumovirus (MPV) genomes, including newly determined French AMPV-C and -D isolates, further supports possible subclassification within the MPV Genus. PLoS One 2014; 9:e102740. [PMID: 25036224 PMCID: PMC4103871 DOI: 10.1371/journal.pone.0102740] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2014] [Accepted: 06/20/2014] [Indexed: 01/12/2023] Open
Abstract
Four avian metapneumovirus (AMPV) subgroups (A-D) have been reported previously based on genetic and antigenic differences. However, until now full length sequences of the only known isolates of European subgroup C and subgroup D viruses (duck and turkey origin, respectively) have been unavailable. These full length sequences were determined and compared with other full length AMPV and human metapneumoviruses (HMPV) sequences reported previously, using phylogenetics, comparisons of nucleic and amino acid sequences and study of codon usage bias. Results confirmed that subgroup C viruses were more closely related to HMPV than they were to the other AMPV subgroups in the study. This was consistent with previous findings using partial genome sequences. Closer relationships between AMPV-A, B and D were also evident throughout the majority of results. Three metapneumovirus "clusters" HMPV, AMPV-C and AMPV-A, B and D were further supported by codon bias and phylogenetics. The data presented here together with those of previous studies describing antigenic relationships also between AMPV-A, B and D and between AMPV-C and HMPV may call for a subclassification of metapneumoviruses similar to that used for avian paramyxoviruses, grouping AMPV-A, B and D as type I metapneumoviruses and AMPV-C and HMPV as type II.
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Affiliation(s)
- Paul A. Brown
- French Agency for Food, Environmental and Occupational Health Safety (ANSES), Avian and Rabbit Virology Immunology and Parasitology Unit (VIPAC), Université Européenne de Bretagne, Ploufragan/Plouzané laboratory, Ploufragan, France
| | - Evelyne Lemaitre
- French Agency for Food, Environmental and Occupational Health Safety (ANSES), Avian and Rabbit Virology Immunology and Parasitology Unit (VIPAC), Université Européenne de Bretagne, Ploufragan/Plouzané laboratory, Ploufragan, France
| | - François-Xavier Briand
- French Agency for Food, Environmental and Occupational Health Safety (ANSES), Avian and Rabbit Virology Immunology and Parasitology Unit (VIPAC), Université Européenne de Bretagne, Ploufragan/Plouzané laboratory, Ploufragan, France
| | - Céline Courtillon
- French Agency for Food, Environmental and Occupational Health Safety (ANSES), Avian and Rabbit Virology Immunology and Parasitology Unit (VIPAC), Université Européenne de Bretagne, Ploufragan/Plouzané laboratory, Ploufragan, France
| | - Olivier Guionie
- French Agency for Food, Environmental and Occupational Health Safety (ANSES), Avian and Rabbit Virology Immunology and Parasitology Unit (VIPAC), Université Européenne de Bretagne, Ploufragan/Plouzané laboratory, Ploufragan, France
| | - Chantal Allée
- French Agency for Food, Environmental and Occupational Health Safety (ANSES), Avian and Rabbit Virology Immunology and Parasitology Unit (VIPAC), Université Européenne de Bretagne, Ploufragan/Plouzané laboratory, Ploufragan, France
| | - Didier Toquin
- French Agency for Food, Environmental and Occupational Health Safety (ANSES), Avian and Rabbit Virology Immunology and Parasitology Unit (VIPAC), Université Européenne de Bretagne, Ploufragan/Plouzané laboratory, Ploufragan, France
| | - Marie-Hélène Bayon-Auboyer
- French Agency for Food, Environmental and Occupational Health Safety (ANSES), Avian and Rabbit Virology Immunology and Parasitology Unit (VIPAC), Université Européenne de Bretagne, Ploufragan/Plouzané laboratory, Ploufragan, France
| | - Véronique Jestin
- French Agency for Food, Environmental and Occupational Health Safety (ANSES), Avian and Rabbit Virology Immunology and Parasitology Unit (VIPAC), Université Européenne de Bretagne, Ploufragan/Plouzané laboratory, Ploufragan, France
| | - Nicolas Eterradossi
- French Agency for Food, Environmental and Occupational Health Safety (ANSES), Avian and Rabbit Virology Immunology and Parasitology Unit (VIPAC), Université Européenne de Bretagne, Ploufragan/Plouzané laboratory, Ploufragan, France
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27
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Wei L, Zhu S, She R, Hu F, Wang J, Yan X, Zhang C, Liu S, Quan R, Li Z, Du F, Wei T, Liu J. Viral replication and lung lesions in BALB/c mice experimentally inoculated with avian metapneumovirus subgroup C isolated from chickens. PLoS One 2014; 9:e92136. [PMID: 24637582 PMCID: PMC3956885 DOI: 10.1371/journal.pone.0092136] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2013] [Accepted: 02/18/2014] [Indexed: 11/18/2022] Open
Abstract
Avian metapneumovirus (aMPV) emerged as an important respiratory pathogen causing acute respiratory tract infection in avian species. Here we used a chicken aMPV subgroup C (aMPV/C) isolate to inoculate experimentally BALB/c mice and found that the aMPV/C can efficiently replicate and persist in the lungs of mice for at least 21 days with a peak viral load at day 6 postinoculation. Lung pathological changes were characterized by increased inflammatory cells. Immunochemical assay showed the presence of viral antigens in the lungs and significant upregulation of pulmonary inflammatory cytokines and chemokines including MCP-1, MIP-1α, RANTES, IL-1β, IFN-γ, and TNF-α were detected following inoculation. These results indicate for the first time that chicken aMPV/C may replicate in the lung of mice. Whether aMPV/C has potential as zoonotic pathogen, further investigation will be required.
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Affiliation(s)
- Li Wei
- Beijing Key Laboratory for Prevention and Control of Infectious Diseases in Livestock and Poultry, Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing, People’s Republic of China
| | - Shanshan Zhu
- Beijing Key Laboratory for Prevention and Control of Infectious Diseases in Livestock and Poultry, Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing, People’s Republic of China
| | - Ruiping She
- College of Veterinary Medicine, China Agricultural University, Beijing, People’s Republic of China
| | - Fengjiao Hu
- College of Veterinary Medicine, China Agricultural University, Beijing, People’s Republic of China
| | - Jing Wang
- Beijing Key Laboratory for Prevention and Control of Infectious Diseases in Livestock and Poultry, Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing, People’s Republic of China
| | - Xu Yan
- Beijing Key Laboratory for Prevention and Control of Infectious Diseases in Livestock and Poultry, Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing, People’s Republic of China
| | - Chunyan Zhang
- Beijing Key Laboratory for Prevention and Control of Infectious Diseases in Livestock and Poultry, Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing, People’s Republic of China
| | - Shuhang Liu
- Beijing Key Laboratory for Prevention and Control of Infectious Diseases in Livestock and Poultry, Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing, People’s Republic of China
| | - Rong Quan
- Beijing Key Laboratory for Prevention and Control of Infectious Diseases in Livestock and Poultry, Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing, People’s Republic of China
| | - Zixuan Li
- Beijing Key Laboratory for Prevention and Control of Infectious Diseases in Livestock and Poultry, Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing, People’s Republic of China
| | - Fang Du
- College of Veterinary Medicine, China Agricultural University, Beijing, People’s Republic of China
| | - Ting Wei
- Molecular Virology Laboratory, QIMR Berghofer Medical Research Institute, Queensland, Australia
| | - Jue Liu
- Beijing Key Laboratory for Prevention and Control of Infectious Diseases in Livestock and Poultry, Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing, People’s Republic of China
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Wei L, Zhu S, Yan X, Wang J, Zhang C, Liu S, She R, Hu F, Quan R, Liu J. Avian metapneumovirus subgroup C infection in chickens, China. Emerg Infect Dis 2014; 19:1092-4. [PMID: 23763901 PMCID: PMC3903454 DOI: 10.3201/eid1907.121126] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Avian metapneumovirus causes acute respiratory tract infection and reductions in egg production in various avian species. We isolated and characterized an increasingly prevalent avian metapneumovirus subgroup C strain from meat-type commercial chickens with severe respiratory signs in China. Culling of infected flocks could lead to economic consequences.
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Affiliation(s)
- Li Wei
- Beijing Municipal Key Laboratory for Prevention and Control of Infectious Diseases in Livestock and Poultry, Beijing, China
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29
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Wei Y, Feng K, Yao X, Cai H, Li J, Mirza AM, Iorio RM, Li J. Localization of a region in the fusion protein of avian metapneumovirus that modulates cell-cell fusion. J Virol 2012; 86:11800-14. [PMID: 22915815 PMCID: PMC3486300 DOI: 10.1128/jvi.00232-12] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2012] [Accepted: 08/12/2012] [Indexed: 11/20/2022] Open
Abstract
The genus Metapneumovirus within the subfamily Pneumovirinae of the family Paramyxoviridae includes two members, human metapneumovirus (hMPV) and avian metapneumovirus (aMPV), causing respiratory tract infections in humans and birds, respectively. Paramyxoviruses enter host cells by fusing the viral envelope with a host cell membrane. Membrane fusion of hMPV appears to be unique, in that fusion of some hMPV strains requires low pH. Here, we show that the fusion (F) proteins of aMPV promote fusion in the absence of the attachment protein and low pH is not required. Furthermore, there are notable differences in cell-cell fusion among aMPV subtypes. Trypsin was required for cell-cell fusion induced by subtype B but not subtypes A and C. The F protein of aMPV subtype A was highly fusogenic, whereas those from subtypes B and C were not. By construction and evaluation of chimeric F proteins composed of domains from the F proteins of subtypes A and B, we localized a region composed of amino acid residues 170 to 338 in the F protein that is responsible for the hyperfusogenic phenotype of the F from subtype A. Further mutagenesis analysis revealed that residues R295, G297, and K323 in this region collectively contributed to the hyperfusogenicity. Taken together, we have identified a region in the aMPV F protein that modulates the extent of membrane fusion. A model for fusion consistent with these data is presented.
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Affiliation(s)
- Yongwei Wei
- Department of Food Science and Technology, College of Food, Agricultural and Environmental Sciences
| | - Kurtis Feng
- Department of Food Science and Technology, College of Food, Agricultural and Environmental Sciences
| | - Xiangjie Yao
- Department of Food Science and Technology, College of Food, Agricultural and Environmental Sciences
| | - Hui Cai
- Department of Food Science and Technology, College of Food, Agricultural and Environmental Sciences
| | - Junan Li
- Division of Environmental Health Sciences, College of Public Health
| | - Anne M. Mirza
- Department of Microbiology and Physiological Systems
| | - Ronald M. Iorio
- Department of Microbiology and Physiological Systems
- Program in Immunology and Virology, University of Massachusetts Medical School, Worcester, Massachusetts, USA
| | - Jianrong Li
- Department of Food Science and Technology, College of Food, Agricultural and Environmental Sciences
- Division of Environmental Health Sciences, College of Public Health
- Center for RNA Biology, The Ohio State University, Columbus, Ohio, USA
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30
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Cavanagh D. Innovation and discovery: the application of nucleic acid-based technology to avian virus detection and characterization. Avian Pathol 2012; 30:581-98. [PMID: 19184952 DOI: 10.1080/03079450120092071] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Polymerase chain reaction (PCR)-based approaches to the detection, differentiation and characterization of avian pathogens continue to be developed and refined. The PCRs, or reverse transcriptase-PCRs, may be general, designed to detect all or most variants of a pathogen, or to be serotype, genotype or pathotype specific. Progress is being made with respect to making nucleic acid approaches more suitable for use in diagnostic laboratories. Robotic workstations are now available for extraction of nucleic acid from many samples in a short time, for routine diagnosis. Following general PCR, the DNA products are commonly analyzed by restriction endonuclease mapping (restriction fragment length polymorphism), using a small number of restriction endonucleases, based on a large body of sequence data. Increasingly, however, nucleotide sequencing is being used to analyze the DNA product, in part due to the expanding use of non-radioactive sequencing methods that are safe and enable high throughout. In this review, I highlight some recent developments with many avian viruses: Newcastle disease virus; circoviruses in canary and pigeon; infectious bursal disease virus (Gumboro disease virus); avian adenoviruses, including Angara disease/infectious hydropericardium virus, haemorrhagic enteritis virus of turkeys, and egg drop syndrome virus; avian herpesviruses, including infectious laryngotracheitis virus, duck plague virus, psittacine herpesvirus (Pacheco's parrot disease virus), Marek's disease virus and herpesvirus of turkeys; avian leukosis virus (associated with lymphoid leukosis or myeloid leukosis, and egg transmission); avian pneumoviruses (turkey rhinotracheitis virus); avian coronaviruses, including infectious bronchitis virus, turkey coronavirus and pheasant coronavirus; astrovirus, in the context of poult enteritis and mortality syndrome, and avian nephritis virus; and avian encephalomyelitis virus, a picornavirus related to hepatitis A virus.
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31
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Felippe PA, Silva LHAD, Santos MBD, Sakata ST, Arns CW. Detection of and phylogenetic studies with avian metapneumovirus recovered from feral pigeons and wild birds in Brazil. Avian Pathol 2011; 40:445-52. [PMID: 21777083 DOI: 10.1080/03079457.2011.596812] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The aim of the present study was to determine whether avian metapneumovirus (aMPV)-related viruses were present in wild and synanthropic birds in Brazil. Therefore, we analysed samples from wild birds, feral pigeons and domestic chickens in order to perform a phylogenetic comparison. To detect the presence of aMPV, a nested reverse transcriptase-polymerase chain reaction was performed with the aim of amplifying a fragment of 270 bases for subtype A and 330 bases for subtype B, comprising the gene coding the G glycoprotein. Positive samples for aMPV subtypes A and B were found in seven (13.2%) different asymptomatic wild birds and pigeons (50%) that had been received at the Bosque dos Jequitibás Zoo Triage Center, Brazil. Also analysed were positive samples from 15 (12.9%) domestic chickens with swollen head syndrome from several regions of Brazil. The positive samples from wild birds, pigeons and domestic chickens clustered in two major phylogenetic groups: some with aMPV subtype A and others with subtype B. The similarity of the G fragment nucleotide sequence of aMPV isolated from chickens and synanthropic and wild avian species ranged from 100 to 97.5% (from 100 to 92.5% for the amino acids). Some positive aMPV samples, which were obtained from wild birds classified in the Orders Psittaciformes, Anseriformes and Craciformes, clustered with subtype A, and others from the Anas and Dendrocygma genera (Anseriformes Order) with subtype B. The understanding of the epizootiology of aMPV is very important, especially if this involves the participation of non-domestic bird species, which would add complexity to their control on farms and to implementation of vaccination programmes for aMPV.
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Affiliation(s)
- Paulo Anselmo Felippe
- Laboratory of Virology, Institute of Biology, State University of Campinas, Campinas, SP, Brazil
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32
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Chacón JL, Mizuma M, Vejarano MP, Toquín D, Eterradossi N, Patnayak DP, Goyal SM, Ferreira AJP. Avian metapneumovirus subtypes circulating in Brazilian vaccinated and nonvaccinated chicken and turkey farms. Avian Dis 2011; 55:82-9. [PMID: 21500641 DOI: 10.1637/9501-081310-reg.1] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Avian metapneumovirus (AMPV) causes turkey rhinotracheitis and is associated with swollen head syndrome in chickens, which is usually accompanied by secondary infections that increase mortality. AMPVs circulating in Brazilian vaccinated and nonvaccinated commercial chicken and turkey farms were detected using a universal reverse transcriptase (RT)-PCR assay that can detect the four recognized subtypes of AMPV. The AMPV status of 228 farms with respiratory and reproductive disturbances was investigated. AMPV was detected in broiler, hen, breeder, and turkey farms from six different geographic regions of Brazil. The detected viruses were subtyped using a nested RT-PCR assay and sequence analysis of the G gene. Only subtypes A and B were detected in both vaccinated and nonvaccinated farms. AMPV-A and AMPV-B were detected in 15 and 23 farms, respectively, while both subtypes were simultaneously found in one hen farm. Both vaccine and field viruses were detected in nonvaccinated farms. In five cases, the detected subtype was different than the vaccine subtype. Field subtype B virus was detected mainly during the final years of the survey period. These viruses showed high molecular similarity (more than 96% nucleotide similarity) among themselves and formed a unique phylogenetic group, suggesting that they may have originated from a common strain. These results demonstrate the cocirculation of subtypes A and B in Brazilian commercial farms.
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Affiliation(s)
- Jorge Luis Chacón
- Department of Pathology, College of Veterinary Medicine, University of São Paulo, Avenida Professor Doutor Orlando Marques de Paiva, 87, Cidade Universitária, Butanā, CEP 05508-900, São Paulo, Brazil
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33
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Rubbenstroth D, Rautenschlein S. Compromised T-cell immunity in turkeys may lead to an unpredictable avian metapneumovirus vaccine response and variable protection against challenge. Avian Pathol 2010; 39:349-57. [DOI: 10.1080/03079457.2010.507240] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Charged amino acids in the AMPV fusion protein have more influence on induced protection than deletion of the SH or G genes. Vaccine 2010; 28:6800-7. [DOI: 10.1016/j.vaccine.2010.07.015] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2009] [Revised: 06/08/2010] [Accepted: 07/07/2010] [Indexed: 11/22/2022]
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35
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Sugiyama M, Ito H, Hata Y, Ono E, Ito T. Complete nucleotide sequences of avian metapneumovirus subtype B genome. Virus Genes 2010; 41:389-95. [PMID: 20676749 DOI: 10.1007/s11262-010-0518-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2010] [Accepted: 07/16/2010] [Indexed: 11/24/2022]
Abstract
Complete nucleotide sequences were determined for subtype B avian metapneumovirus (aMPV), the attenuated vaccine strain VCO3/50 and its parental pathogenic strain VCO3/60616. The genomes of both strains comprised 13,508 nucleotides (nt), with a 42-nt leader at the 3'-end and a 46-nt trailer at the 5'-end. The genome contains eight genes in the order 3'-N-P-M-F-M2-SH-G-L-5', which is the same order shown in the other metapneumoviruses. The genes are flanked on either side by conserved transcriptional start and stop signals and have intergenic sequences varying in length from 1 to 88 nt. Comparison of nt and predicted amino acid (aa) sequences of VCO3/60616 with those of other metapneumoviruses revealed higher homology with aMPV subtype A virus than with other metapneumoviruses. A total of 18 nt and 10 deduced aa differences were seen between the strains, and one or a combination of several differences could be associated with attenuation of VCO3/50.
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Affiliation(s)
- Miki Sugiyama
- Research and Development, Merial Japan Limited, 2-14-2 Nagata-cho, Chiyoda-ku, Tokyo, Japan
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36
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Chacón JL, Brandão PE, Buim M, Villarreal L, Ferreira AJP. Detection by reverse transcriptase-polymerase chain reaction and molecular characterization of subtype B avian metapneumovirus isolated in Brazil. Avian Pathol 2010; 36:383-7. [PMID: 17899462 DOI: 10.1080/03079450701589142] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Subtype B avian metapneumovirus (aMPV) was isolated and detected by reverse transcriptase-polymerase chain reaction (RT-PCR) in Brazilian commercial laying chicken flocks with no history of vaccination against aMPV and presenting respiratory signs and decreased egg production. RT-PCR results from samples from three affected flocks revealed that the three isolates were subtype B. Partial sequence analysis of the G glycoprotein gene confirmed that the samples belonged to subtype B and were not of the vaccine type. Comparison of nucleotide and amino acid sequences of the G gene of the three Brazilian aMPV samples with subtype B isolates from other countries revealed 95.1% to 96.1% identity. Nucleotide sequences showed 100% identity among the Brazilian subtype B samples and 95.6% identity with the subtype B vaccine strain used in Brazil. This work describes the circulation of subtype B aMPV in Brazil and discusses its importance in terms of disease epidemiology.
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Affiliation(s)
- Jorge Luis Chacón
- Department of Pathology, University of São Paulo, Avenida Professor Doutor Orlando Marques de Paiva 87, Cidade Universitária, Butantã, São Paulo, SP, Brazil
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37
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Tarpey I, Huggins MB, Davis PJ, Shilleto R, Orbell SJ, Cook JKA. Cloning, expression and immunogenicity of the avian pneumovirus (Colorado isolate) F protein. Avian Pathol 2010; 30:471-4. [DOI: 10.1080/03079450120078653] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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38
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Cook JA, Orthel F, Woods M, Orbell S, Baxendale W, Huggins M. Avian pneumovirus infection of laying hens: Experimental studies. Avian Pathol 2010; 29:545-56. [DOI: 10.1080/03079450020016788] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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39
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A. Cook JK, Huggins MB, Orbell SJ, Mawditt K, Cavanagh D. Infectious bronchitis virus vaccine interferes with the replication of avian pneumovirus vaccine in domestic fowl. Avian Pathol 2010; 30:233-42. [DOI: 10.1080/03079450120054640] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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40
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Propagation of avian metapneumovirus subtypes A and B using chicken embryo related and other cell systems. J Virol Methods 2010; 167:1-4. [PMID: 20219543 DOI: 10.1016/j.jviromet.2010.02.018] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2009] [Revised: 02/15/2010] [Accepted: 02/18/2010] [Indexed: 11/20/2022]
Abstract
Primary isolation of avian metapneumovirus (aMPV) is carried out using tracheal organ culture (TOC) or chicken embryonated eggs with subsequent adaptation in chicken embryo fibroblasts (CEF) or Vero cultures. This study was conducted to evaluate six different cell lines and two avian culture systems for the propagation of aMPV subtypes A and B. The chicken embryo related (CER) cells were used successfully for primary isolation. In addition to Vero and baby hamster kidney (BHK-21) cells, CER cells were also shown to be the most appropriate for propagation of aMPV considering high titres. Propagation of A and B subtypes in CEF and TOC remained efficient after the primary isolation and several passages of viruses in the CER cell line. The growth curves were created using CER, Vero and BHK-21 cell lines. Compared with growth, both yielded higher titres in CER cells during the first 30 h after infection, but no significant difference was observed in the results obtained from CER and Vero cells. This data show that CER cells are adequate for aMPV subtypes A and B propagation, giving similar results to Vero cells.
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Identification of two regions within the subtype A avian metapneumovirus fusion protein (amino acids 211-310 and 336-479) recognized by neutralizing antibodies. Virus Res 2009; 146:13-8. [PMID: 19720091 DOI: 10.1016/j.virusres.2009.08.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2009] [Revised: 08/18/2009] [Accepted: 08/21/2009] [Indexed: 11/20/2022]
Abstract
The fusion (F) protein of a subtype A AMPV was expressed in sections in Escherichia coli. Six genome sections were selected which encoded the majority of the protein. These were cloned then expressed from a His tag expression plasmid and, following purification on nickel columns, identities were confirmed by Western blot analysis. The interactions of each fragment with AMPV neutralizing antisera were determined. Purified fragments were mixed with AMPV sera raised against A-C subtypes by a natural route, in order to determine any reduction in their neutralizing capacities. Two fragments covering regions of the F ectodomain reduced neutralizing capacities of both subtype A and B antisera to a highly significant degree (p<0.001) while no effects were seen with subtype C antiserum. Previous studies of similar viruses had identified neutralization as being associated with equivalent F regions. Findings are likely to be useful in guiding future vaccine design.
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Padhi A, Poss M. Population dynamics and rates of molecular evolution of a recently emerged paramyxovirus, avian metapneumovirus subtype C. J Virol 2009; 83:2015-9. [PMID: 19052092 PMCID: PMC2643776 DOI: 10.1128/jvi.02047-08] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2008] [Accepted: 11/24/2008] [Indexed: 11/20/2022] Open
Abstract
We report the existence of two distinct sublineages of avian metapneumovirus (MPV) subtype C, a virus which has caused serious economic loss in commercial turkey farms in the United States. This subtype is closely related to human MPV, infects multiple avian species, and is globally distributed. The evolutionary rates of this virus are estimated to be 1.3 x 10(-3) to 7 x 10(-3) substitutions per site per year, and coalescent estimates place its emergence between 1991 and 1996. The four genes examined show a concordant demographic pattern which is characterized by a rapid increase in population size followed by stable population grown until the present.
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Affiliation(s)
- Abinash Padhi
- Department of Biology, The Pennsylvania State University, University Park, 16802, USA
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Turpin EA, Stallknecht DE, Slemons RD, Zsak L, Swayne DE. Evidence of avian metapneumovirus subtype C infection of wild birds in Georgia, South Carolina, Arkansas and Ohio, USA. Avian Pathol 2008; 37:343-51. [PMID: 18568663 DOI: 10.1080/03079450802068566] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Metapneumoviruses (MPVs) were first reported in avian species (aMPVs) in the late 1970s and in humans in 2001. Although aMPVs have been reported in Europe and Asia for over 20 years, the virus first appeared in the United States in 1996, leaving many to question the origin of the virus and why it proved to be a different subtype from those found elsewhere. To examine the potential role of migratory waterfowl and other wild birds in aMPV spread, our study focused on determining whether populations of wild birds have evidence of aMPV infection. Serum samples from multiple species were initially screened using a blocking enzyme-linked immunosorbent assay. Antibodies to aMPVs were identified in five of the 15 species tested: American coots, American crows, Canada geese, cattle egrets, and rock pigeons. The presence of aMPV-specific antibodies was confirmed with virus neutralization and western blot assays. Oral swabs were collected from wild bird species with the highest percentage of aMPV-seropositive serum samples: the American coots and Canada geese. From these swabs, 17 aMPV-positive samples were identified, 11 from coots and six from geese. Sequence analysis of the matrix, attachment gene and short hydrophobic genes revealed that these viruses belong to subtype C aMPV. The detection of aMPV antibodies and the presence of virus in wild birds in Georgia, South Carolina, Arkansas and Ohio demonstrates that wild birds can serve as a reservoir of subtype C aMPV, and may provide a potential mechanism to spread aMPVs to poultry in other regions of the United States and possibly to other countries in Central and South America.
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Affiliation(s)
- E A Turpin
- United States Department of Agriculture, Southeast Poultry Research Laboratory, Agricultural Research Service, Athens, GA 30605, USA.
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Ling R, Sinkovic S, Toquin D, Guionie O, Eterradossi N, Easton AJ. Deletion of the SH gene from avian metapneumovirus has a greater impact on virus production and immunogenicity in turkeys than deletion of the G gene or M2-2 open reading frame. J Gen Virol 2008; 89:525-533. [PMID: 18198384 DOI: 10.1099/vir.0.83309-0] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Subgroup A avian metapneumoviruses lacking either the SH or G gene or the M2-2 open reading frame were generated by using a reverse-genetics approach. The growth properties of these viruses were studied in vitro and in vivo in their natural host. Deletion of the SH gene alone resulted in the generation of a syncytial-plaque phenotype and this was reversed by the introduction of the SH gene from a subgroup B, but not a subgroup C, virus. Infected turkeys were assessed for antibody production and the presence of viral genomic RNA in tracheal swabs. The virus with a deleted SH gene also showed the greatest impairment of replication both in cell culture and in infected turkeys. This contrasts with the situation with other pneumoviruses in culture and in model animals, where deletion of the SH gene results in little effect upon viral yield and a good antibody response. Replication of the G- and M2-2-deleted viruses was impaired more severely in turkeys than in cell culture, with only some animals showing evidence of virus growth and antibody production. There was no correlation between virus replication and antibody response, suggesting that replication sites other than the trachea may be important for induction of antibody responses.
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Affiliation(s)
- Roger Ling
- Department of Biological Sciences, University of Warwick, Coventry CV4 7AL, UK
| | - Sabrina Sinkovic
- Department of Biological Sciences, University of Warwick, Coventry CV4 7AL, UK
| | - Didier Toquin
- French Agency for Food Safety (AFSSA), OIE Reference Laboratory for Turkey Rhinotracheitis, Avian and Rabbit Virology Immunology and Parasitology Unit (VIPAC), BP 53, 22440 Ploufragan, France
| | - Olivier Guionie
- French Agency for Food Safety (AFSSA), OIE Reference Laboratory for Turkey Rhinotracheitis, Avian and Rabbit Virology Immunology and Parasitology Unit (VIPAC), BP 53, 22440 Ploufragan, France
| | - Nicolas Eterradossi
- French Agency for Food Safety (AFSSA), OIE Reference Laboratory for Turkey Rhinotracheitis, Avian and Rabbit Virology Immunology and Parasitology Unit (VIPAC), BP 53, 22440 Ploufragan, France
| | - Andrew J Easton
- Department of Biological Sciences, University of Warwick, Coventry CV4 7AL, UK
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Kapczynski DR, Perkins LL, Sellers HS. Mucosal Vaccination with Formalin-Inactivated Avian Metapneumovirus Subtype C Does Not Protect Turkeys Following Intranasal Challenge. Avian Dis 2008; 52:28-33. [DOI: 10.1637/7821-122706-reg] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Abstract
Pneumovirus infection remains a significant problem for both human and veterinary medicine. Both avian pneumovirus (aMPV, Turkey rhinotracheitis virus) and human metapneumovirus (hMPV) are pathogens of birds and humans, which are associated with respiratory tract infections. Based on their different genomic organization and low level of nucleotide (nt) and amino acid (aa) identity with paramyxoviruses in the genus Pneumovirus, aMPV and hMPV have been classified into a new genus referred to as Metapneumovirus. The advancement of our understanding of pneumovirus biology and pathogenesis of pneumovirus disease in specific natural hosts can provide us with strategies for vaccine formulations and combined antiviral and immunomodulatory therapies.
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Affiliation(s)
- Shobha Broor
- Department of Microbiology, All India Institute of Medical Sciences Hospital, New Delhi, India.
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Tarpey I, Huggins MB. Onset of immunity following in ovo delivery of avian metapneumovirus vaccines. Vet Microbiol 2007; 124:134-9. [PMID: 17462834 DOI: 10.1016/j.vetmic.2007.03.018] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2007] [Revised: 03/06/2007] [Accepted: 03/22/2007] [Indexed: 11/24/2022]
Abstract
Avian metapneumovirus (aMPV) is an important cause of disease in chickens and turkeys. As infection can occur early in life and spread of the virus throughout a flock is rapid, an early onset of immunity post-vaccination would be advantageous. We have studied the serological immune response and the onset of protective immunity of an aMPV vaccine delivered to chickens via the in ovo route compared to oculonasal delivery at day old. A 1000-fold lower dose delivered in ovo to chicken specific pathogen free (SPF) embryos, than vaccination at day old, provided a significantly higher antibody response. In the presence of maternally derived antibody (MDA), there was no significant difference in antibody response between the vaccination routes. However, the onset of immunity (OOI) for the vaccine delivered to MDA positive chicken embryos was 5 days post-hatch in comparison to 8 days post-hatch for the same dose of vaccine given at day old indicating that chicks would be protected against disease earlier in the field if vaccinated by the in ovo route. In further experiments the OOI for a turkey vaccine delivered to MDA positive turkey embryos was shown to be 8 days post-hatch.
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Affiliation(s)
- I Tarpey
- Intervet UK, Walton Manor, Walton, Milton Keynes, Bucks MK7 7AJ, UK.
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Tiwari A, Patnayak DP, Chander Y, Goyal SM. Permissibility of different cell types for the growth of avian metapneumovirus. J Virol Methods 2006; 138:80-4. [PMID: 16930732 DOI: 10.1016/j.jviromet.2006.07.020] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2006] [Revised: 07/17/2006] [Accepted: 07/19/2006] [Indexed: 11/29/2022]
Abstract
Vero cells are commonly used for the growth of avian metapneumovirus subtype C (aMPV-C). This study was conducted to evaluate 17 different cell types for the growth of a Minnesota strain of aMPV-C. The virus was inoculated into these cell types and virus growth was monitored by the development of cytopathic effects (cpe) and immunofluorescence. Virus growth was obtained in 6 of 17 cell types tested with the highest virus titers observed in BGM and DF-1 cells. The flow cytometric analysis of cells at 72 h post inoculation found the highest number of infected cells in BGM cells followed by QT-35 cells. At 48 h post inoculation, DF-1 and BGM cells showed the highest number of infected cells. These results suggest that BGM, QT-35, and DF-1 cells can be used for high titer propagation of aMPV-C.
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Affiliation(s)
- A Tiwari
- Department of Veterinary Population Medicine, College of Veterinary Medicine, University of Minnesota, 1333 Gortner Avenue, St. Paul, MN 55108, USA
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Yu Q, Estevez CN, Kapczynski DR. Production and Characterization of Monoclonal Antibodies That React to the Nucleocapsid Protein of Avian Metapneumovirus Subtype C. Avian Dis 2006; 50:419-24. [PMID: 17039843 DOI: 10.1637/7513-020606r.1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Monoclonal antibodies (MAbs) were prepared against avian metapneumovirus (aMPV) subtype C (aMPV/ Minnesota/turkey/1a/97). Six MAbs were selected based on enzyme-linked immunosorbent assay activities and characterized by isotyping, neutralization test, western blot analysis, and immunohistochemistry assay. The results showed that three MAbs (3E, 9D, and 12C) belonged to the IgG1 subclass, whereas the other three (5D, 8E, and 16E) were of the IgG2a subclass. None of the six MAbs neutralized aMPV infectivity at a detectable level, but all reacted with both denatured and nondenatured forms of the nucleocapsid (N) protein of aMPV, suggesting that these MAbs may recognize structurally independent epitopes of the N protein. These MAbs provide new tools and methods for investigating aMPV infection and pathogenesis, as well as diagnosis of aMPV disease.
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Affiliation(s)
- Qingzhong Yu
- Southeast Poultry Research Laboratory, USDA Agricultural Research Service, 934 College Station Road, Athens, GA 30605, USA
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Govindarajan D, Buchholz UJ, Samal SK. Recovery of avian metapneumovirus subgroup C from cDNA: cross-recognition of avian and human metapneumovirus support proteins. J Virol 2006; 80:5790-7. [PMID: 16731918 PMCID: PMC1472575 DOI: 10.1128/jvi.00138-06] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2006] [Accepted: 03/27/2006] [Indexed: 11/20/2022] Open
Abstract
Avian metapneumovirus (AMPV) causes an acute respiratory disease in turkeys and is associated with "swollen head syndrome" in chickens, contributing to significant economic losses for the U.S. poultry industry. With a long-term goal of developing a better vaccine for controlling AMPV in the United States, we established a reverse genetics system to produce infectious AMPV of subgroup C entirely from cDNA. A cDNA clone encoding the entire 14,150-nucleotide genome of AMPV subgroup C strain Colorado (AMPV/CO) was generated by assembling five cDNA fragments between the T7 RNA polymerase promoter and the autocatalytic hepatitis delta virus ribozyme of a transcription plasmid, pBR 322. Transfection of this plasmid, along with the expression plasmids encoding the N, P, M2-1, and L proteins of AMPV/CO, into cells stably expressing T7 RNA polymerase resulted in the recovery of infectious AMPV/CO. Characterization of the recombinant AMPV/CO showed that its growth properties in tissue culture were similar to those of the parental virus. The potential of AMPV/CO to serve as a viral vector was also assessed by generating another recombinant virus, rAMPV/CO-GFP, that expressed the enhanced green fluorescent protein (GFP) as a foreign protein. Interestingly, GFP-expressing AMPV and GFP-expressing human metapneumovirus (HMPV) could be recovered using the support plasmids of either virus, denoting that the genome promoters are conserved between the two metapneumoviruses and can be cross-recognized by the polymerase complex proteins of either virus. These results indicate a close functional relationship between AMPV/CO and HMPV.
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Affiliation(s)
- Dhanasekaran Govindarajan
- Virginia-Maryland Regional College of Veterinary Medicine, University of Maryland, College Park, MD 20742, USA
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