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de Swart RL, Belov GA. Advantages and challenges of Newcastle disease virus as a vector for respiratory mucosal vaccines. Curr Opin Virol 2023; 62:101348. [PMID: 37591130 DOI: 10.1016/j.coviro.2023.101348] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Accepted: 07/18/2023] [Indexed: 08/19/2023]
Abstract
Newcastle disease virus (NDV) is an avian pathogen with an unsegmented negative-strand RNA genome. Properties such as the ease of genome modification, respiratory tract tropism, and self-limiting replication in mammals make NDV an attractive vector for vaccine development. Experimental NDV-based vaccines against multiple human and animal pathogens elicited both systemic and mucosal immune responses and were protective in preclinical animal studies, but their real-life efficacy remains to be demonstrated. Only recently, the first results of clinical trials of NDV-based vaccines against SARS-CoV-2 became available, highlighting the challenges that need to be overcome to fully realize the potential of NDV as a platform for the rapid development of economically affordable and effective mucosal vaccines.
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Affiliation(s)
- Rik L de Swart
- Department of Virology, Wageningen Bioveterinary Research, Lelystad, the Netherlands.
| | - George A Belov
- Department of Veterinary Medicine and Virginia-Maryland College of Veterinary Medicine, University of Maryland, College Park, MD, USA.
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2
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Ponce-de-León S, Torres M, Soto-Ramírez LE, Calva JJ, Santillán-Doherty P, Carranza-Salazar DE, Carreño JM, Carranza C, Juárez E, Carreto-Binaghi LE, Ramírez-Martínez L, Paz De la Rosa G, Vigueras-Moreno R, Ortiz-Stern A, López-Vidal Y, Macías AE, Torres-Flores J, Rojas-Martínez O, Suárez-Martínez A, Peralta-Sánchez G, Kawabata H, González-Domínguez I, Martínez-Guevara JL, Sun W, Sarfati-Mizrahi D, Soto-Priante E, Chagoya-Cortés HE, López-Macías C, Castro-Peralta F, Palese P, García-Sastre A, Krammer F, Lozano-Dubernard B. Interim safety and immunogenicity results from an NDV-based COVID-19 vaccine phase I trial in Mexico. NPJ Vaccines 2023; 8:67. [PMID: 37164959 PMCID: PMC10170424 DOI: 10.1038/s41541-023-00662-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Accepted: 04/14/2023] [Indexed: 05/12/2023] Open
Abstract
There is still a need for safe, efficient, and low-cost coronavirus disease 2019 (COVID-19) vaccines that can stop transmission of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Here we evaluated a vaccine candidate based on a live recombinant Newcastle disease virus (NDV) that expresses a stable version of the spike protein in infected cells as well as on the surface of the viral particle (AVX/COVID-12-HEXAPRO, also known as NDV-HXP-S). This vaccine candidate can be grown in embryonated eggs at a low cost, similar to influenza virus vaccines, and it can also be administered intranasally, potentially to induce mucosal immunity. We evaluated this vaccine candidate in prime-boost regimens via intramuscular, intranasal, or intranasal followed by intramuscular routes in an open-label non-randomized non-placebo-controlled phase I clinical trial in Mexico in 91 volunteers. The primary objective of the trial was to assess vaccine safety, and the secondary objective was to determine the immunogenicity of the different vaccine regimens. In the interim analysis reported here, the vaccine was found to be safe, and the higher doses tested were found to be immunogenic when given intramuscularly or intranasally followed by intramuscular administration, providing the basis for further clinical development of the vaccine candidate. The study is registered under ClinicalTrials.gov identifier NCT04871737.
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Affiliation(s)
- Samuel Ponce-de-León
- Programa Universitario de Investigación en Salud (PUIS), Facultad de Medicina, Universidad Nacional Autónoma de México (UNAM), Edif. de los Programas Universitarios, Planta Alta. Circuito de la Investigación Científica S/N Ciudad Universitaria, Ciudad de México, C.P. 04510, México
| | - Martha Torres
- Laboratorio de Inmunobiología de la tuberculosis, Instituto Nacional de Enfermedades Respiratorias (INER), Ismael Cossio Villegas, Calzada de Tlalpan 4502, Sección XVI, CP 14080, Tlalpan, México
| | - Luis Enrique Soto-Ramírez
- Department of Infectious Diseases, Instituto Nacional de Ciencias Médicas y Nutrición "Salvador Zubirán", Vasco de Quiroga 15, Belisario Dominguez, Sección XVI, 14080, Tlalpan, México
- Departamento de Infectología y Vigilancia Epidemiológica, Hospital Médica Sur, S.A.B. de C. V., Puente de Piedra 150, Toriello Guerra, 14050, Tlalpan, México
| | - Juan José Calva
- Department of Infectious Diseases, Instituto Nacional de Ciencias Médicas y Nutrición "Salvador Zubirán", Vasco de Quiroga 15, Belisario Dominguez, Sección XVI, 14080, Tlalpan, México
| | - Patricio Santillán-Doherty
- Instituto Nacional de Enfermedades Respiratorias (INER), Ismael Cossio Villegas, Calzada de Tlalpan 4502, Sección XVI, CP 14080, Tlalpan, México
| | - Dora Eugenia Carranza-Salazar
- ProcliniQ Investigación Clínica, S. A. de C. V., Renato Leduc 155 (Xontepec 91), Toriello Guerra, 14050, Tlalpan, México
| | - Juan Manuel Carreño
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Pl, New York, NY, 10029, USA
| | - Claudia Carranza
- Laboratorio de Inmunobiología de la tuberculosis, Instituto Nacional de Enfermedades Respiratorias (INER), Ismael Cossio Villegas, Calzada de Tlalpan 4502, Sección XVI, CP 14080, Tlalpan, México
| | - Esmeralda Juárez
- Departamento de Investigación en Microbiología, Instituto Nacional de Enfermedades Respiratorias (INER), Ismael Cossio Villegas, Calzada de Tlalpan 4502, Sección XVI, CP 14080, Tlalpan, México
| | - Laura E Carreto-Binaghi
- Laboratorio de Inmunobiología de la tuberculosis, Instituto Nacional de Enfermedades Respiratorias (INER), Ismael Cossio Villegas, Calzada de Tlalpan 4502, Sección XVI, CP 14080, Tlalpan, México
| | - Luis Ramírez-Martínez
- Laboratorio Avi-Mex, S. A. de C. V. (Avimex), Maíz 18, Granjas Esmeralda, CP 09810, Iztapalapa, CDMX, Mexico
| | - Georgina Paz De la Rosa
- Laboratorio Avi-Mex, S. A. de C. V. (Avimex), Maíz 18, Granjas Esmeralda, CP 09810, Iztapalapa, CDMX, Mexico
| | - Rosalía Vigueras-Moreno
- Laboratorio Avi-Mex, S. A. de C. V. (Avimex), Maíz 18, Granjas Esmeralda, CP 09810, Iztapalapa, CDMX, Mexico
| | - Alejandro Ortiz-Stern
- iLS Clinical Research, S. C. (iLS), Matias Romero 102 - 205 Del Valle, Benito Juárez, CP 03100, CDMX, México
| | - Yolanda López-Vidal
- Programa de Inmunología Molecular Microbiana, Departamento de Microbiología y Parasitología, Facultad de Medicina, Universidad Nacional Autónoma de México (UNAM), Av. Universidad 3000, Circuito Interior S/N. Ciudad Universitaria, Coyoacán, CP.04510, México
| | - Alejandro E Macías
- Departamento de Medicina, Universidad de Guanajuato, 20 de Enero 929, C.P 37000, León Guanajuato, México
| | - Jesús Torres-Flores
- Dirección Adjunta de Desarrollo Tecnológico, Vinculación e Innovación, Consejo Nacional de Ciencia y Tecnología (CONACYT), Insurgentes Sur 1582, Crédito Constructor, CP 03940, Benito Juárez, CDMX, México
| | - Oscar Rojas-Martínez
- Laboratorio Avi-Mex, S. A. de C. V. (Avimex), Maíz 18, Granjas Esmeralda, CP 09810, Iztapalapa, CDMX, Mexico
| | - Alejandro Suárez-Martínez
- Laboratorio Avi-Mex, S. A. de C. V. (Avimex), Maíz 18, Granjas Esmeralda, CP 09810, Iztapalapa, CDMX, Mexico
| | - Gustavo Peralta-Sánchez
- Laboratorio Avi-Mex, S. A. de C. V. (Avimex), Maíz 18, Granjas Esmeralda, CP 09810, Iztapalapa, CDMX, Mexico
| | - Hisaaki Kawabata
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Pl, New York, NY, 10029, USA
| | - Irene González-Domínguez
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Pl, New York, NY, 10029, USA
| | - José Luis Martínez-Guevara
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Pl, New York, NY, 10029, USA
| | - Weina Sun
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Pl, New York, NY, 10029, USA
| | - David Sarfati-Mizrahi
- Laboratorio Avi-Mex, S. A. de C. V. (Avimex), Maíz 18, Granjas Esmeralda, CP 09810, Iztapalapa, CDMX, Mexico
| | - Ernesto Soto-Priante
- Laboratorio Avi-Mex, S. A. de C. V. (Avimex), Maíz 18, Granjas Esmeralda, CP 09810, Iztapalapa, CDMX, Mexico
| | - Héctor Elías Chagoya-Cortés
- Consultora Mextrategy, S.A.S. de C. V. (Mextrategy), Insurgentes Sur 1079 P7-127, Nochebuena, CP 03720, CDMX, Mexico
| | - Constantino López-Macías
- Unidad de Investigación Médica en Inmunoquímica. Hospital de Especialidades del Centro Médico Nacional Siglo XXI. Instituto Mexicano del Seguro Social (IMSS), Av. Cuauhtémoc 330, Doctores, C.P. 06720, Benito Juárez, CDMX, México
| | - Felipa Castro-Peralta
- Laboratorio Avi-Mex, S. A. de C. V. (Avimex), Maíz 18, Granjas Esmeralda, CP 09810, Iztapalapa, CDMX, Mexico
| | - Peter Palese
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Pl, New York, NY, 10029, USA
- Department of Medicine, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Pl, New York, NY, 10029, USA
| | - Adolfo García-Sastre
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Pl, New York, NY, 10029, USA.
- Department of Medicine, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Pl, New York, NY, 10029, USA.
- Global Health and Emerging Pathogens Institute, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Pl, New York, NY, 10029, USA.
- The Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Pl, New York, NY, 10029, USA.
- Department of Pathology, Molecular and Cell-based Medicine, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Pl, New York, NY, 10029, USA.
| | - Florian Krammer
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Pl, New York, NY, 10029, USA.
- Department of Pathology, Molecular and Cell-based Medicine, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Pl, New York, NY, 10029, USA.
| | - Bernardo Lozano-Dubernard
- Laboratorio Avi-Mex, S. A. de C. V. (Avimex), Maíz 18, Granjas Esmeralda, CP 09810, Iztapalapa, CDMX, Mexico.
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Tumor Temperature: Friend or Foe of Virus-Based Cancer Immunotherapy. Biomedicines 2022; 10:biomedicines10082024. [PMID: 36009571 PMCID: PMC9405776 DOI: 10.3390/biomedicines10082024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 08/16/2022] [Accepted: 08/16/2022] [Indexed: 11/17/2022] Open
Abstract
The temperature of a solid tumor is often dissimilar to baseline body temperature and, compared to healthy tissues, may be elevated, reduced, or a mix of both. The temperature of a tumor is dependent on metabolic activity and vascularization and can change due to tumor progression, treatment, or cancer type. Despite the need to function optimally within temperature-variable tumors, oncolytic viruses (OVs) are primarily tested at 37 °C in vitro. Furthermore, animal species utilized to test oncolytic viruses, such as mice, dogs, cats, and non-human primates, poorly recapitulate the temperature profile of humans. In this review, we discuss the importance of temperature as a variable for OV immunotherapy of solid tumors. Accumulating evidence supports that the temperature sensitivity of OVs lies on a spectrum, with some OVs likely hindered but others enhanced by elevated temperatures. We suggest that in vitro temperature sensitivity screening be performed for all OVs destined for the clinic to identify potential hinderances or benefits with regard to elevated temperature. Furthermore, we provide recommendations for the clinical use of temperature and OVs.
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Park HS, Matsuoka Y, Luongo C, Yang L, Santos C, Liu X, Ahlers LRH, Moore IN, Afroz S, Johnson RF, Lafont BAP, Dorward DW, Fischer ER, Martens C, Samal SK, Munir S, Buchholz UJ, Le Nouën C. Intranasal immunization with avian paramyxovirus type 3 expressing SARS-CoV-2 spike protein protects hamsters against SARS-CoV-2. NPJ Vaccines 2022; 7:72. [PMID: 35764659 PMCID: PMC9240059 DOI: 10.1038/s41541-022-00493-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Accepted: 05/11/2022] [Indexed: 12/13/2022] Open
Abstract
Current vaccines against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) are administered parenterally and appear to be more protective in the lower versus the upper respiratory tract. Vaccines are needed that directly stimulate immunity in the respiratory tract, as well as systemic immunity. We used avian paramyxovirus type 3 (APMV3) as an intranasal vaccine vector to express the SARS-CoV-2 spike (S) protein. A lack of pre-existing immunity in humans and attenuation by host-range restriction make APMV3 a vector of interest. The SARS-CoV-2 S protein was stabilized in its prefusion conformation by six proline substitutions (S-6P) rather than the two that are used in most vaccine candidates, providing increased stability. APMV3 expressing S-6P (APMV3/S-6P) replicated to high titers in embryonated chicken eggs and was genetically stable, whereas APMV3 expressing non-stabilized S or S-2P were unstable. In hamsters, a single intranasal dose of APMV3/S-6P induced strong serum IgG and IgA responses to the S protein and its receptor-binding domain, and strong serum neutralizing antibody responses to SARS-CoV-2 isolate WA1/2020 (lineage A). Sera from APMV3/S-6P-immunized hamsters also efficiently neutralized Alpha and Beta variants of concern. Immunized hamsters challenged with WA1/2020 did not exhibit the weight loss and lung inflammation observed in empty-vector-immunized controls; SARS-CoV-2 replication in the upper and lower respiratory tract of immunized animals was low or undetectable compared to the substantial replication in controls. Thus, a single intranasal dose of APMV3/S-6P was highly immunogenic and protective against SARS-CoV-2 challenge, suggesting that APMV3/S-6P is suitable for clinical development.
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Affiliation(s)
- Hong-Su Park
- RNA Viruses Section, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Yumiko Matsuoka
- RNA Viruses Section, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Cindy Luongo
- RNA Viruses Section, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Lijuan Yang
- RNA Viruses Section, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Celia Santos
- RNA Viruses Section, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Xueqiao Liu
- RNA Viruses Section, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Laura R H Ahlers
- RNA Viruses Section, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Ian N Moore
- Infectious Disease Pathogenesis Section, Comparative Medicine Branch, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Sharmin Afroz
- RNA Viruses Section, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Reed F Johnson
- SARS-CoV-2 Virology Core, Laboratory of Viral Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Bernard A P Lafont
- SARS-CoV-2 Virology Core, Laboratory of Viral Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, 20892, USA
| | - David W Dorward
- Research Technologies Branch, Rocky Mountain Laboratories, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT, 59840, USA
| | - Elizabeth R Fischer
- Research Technologies Branch, Rocky Mountain Laboratories, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT, 59840, USA
| | - Craig Martens
- Research Technologies Branch, Rocky Mountain Laboratories, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT, 59840, USA
| | - Siba K Samal
- Virginia-Maryland College of Veterinary Medicine, University of Maryland, College Park, MD, 20742, USA
| | - Shirin Munir
- RNA Viruses Section, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Ursula J Buchholz
- RNA Viruses Section, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, 20892, USA.
| | - Cyril Le Nouën
- RNA Viruses Section, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, 20892, USA.
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Fakri FZ, Bamouh Z, Elmejdoub S, Elkarhat Z, Tadlaoui K, Chen W, Bu Z, Elharrak M. Long term immunity against Peste Des Petits Ruminants mediated by a recombinant Newcastle disease virus vaccine. Vet Microbiol 2021; 261:109201. [PMID: 34399299 DOI: 10.1016/j.vetmic.2021.109201] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Accepted: 08/03/2021] [Indexed: 11/18/2022]
Abstract
Peste des Petits Ruminants (PPR) is a highly contagious and often fatal disease of sheep and goats. Conventional live vaccines have been successfully used in endemic countries however, there are not completely safe and not allowing differentiation between vaccinated and infected animals (DIVA). In this study, a recombinant Newcastle disease virus (NDV) expressing the hemagglutinin of PPRV (NDV-PPRVH) was evaluated on small ruminants by serology response in sheep and goats, experimental infection in goats and immunity duration in sheep. The NDV-PPRVH vaccine injected twice at 28 days' interval, provided full protection against challenge with a virulent PPR strain in the most sensitive species and induced significant neutralizing antibodies. Immunological response in goats was slightly higher than sheep and the vaccine injected at 108.0 50 % egg infective dose/mL allowed anti-PPRV antibodies that lasted at least 12 months as shown by antibody response monitoring in sheep. The NDV vector presented a limited replication in the host and vaccinated animals remained negative when tested by cELISA based on PPRV nucleoprotein allowing DIVA. This recombinant vaccine appears to be a promising candidate in a free at risk countries and may be an important component of the global strategy for PPR eradication.
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Affiliation(s)
- F Z Fakri
- Research and Development, MCI Santé Animale, Lot. 157, Z. I., Sud-Ouest (ERAC) B.P: 278, Mohammedia, 28810, Morocco.
| | - Z Bamouh
- Research and Development, MCI Santé Animale, Lot. 157, Z. I., Sud-Ouest (ERAC) B.P: 278, Mohammedia, 28810, Morocco.
| | - S Elmejdoub
- Research and Development, MCI Santé Animale, Lot. 157, Z. I., Sud-Ouest (ERAC) B.P: 278, Mohammedia, 28810, Morocco.
| | - Z Elkarhat
- Research and Development, MCI Santé Animale, Lot. 157, Z. I., Sud-Ouest (ERAC) B.P: 278, Mohammedia, 28810, Morocco.
| | - K Tadlaoui
- Research and Development, MCI Santé Animale, Lot. 157, Z. I., Sud-Ouest (ERAC) B.P: 278, Mohammedia, 28810, Morocco.
| | - W Chen
- Key Laboratory of Veterinary Public Health of Ministry of Agriculture and State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute of Chinese Academy of Agricultural Sciences, Harbin, 150001, China.
| | - Z Bu
- Key Laboratory of Veterinary Public Health of Ministry of Agriculture and State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute of Chinese Academy of Agricultural Sciences, Harbin, 150001, China.
| | - M Elharrak
- Research and Development, MCI Santé Animale, Lot. 157, Z. I., Sud-Ouest (ERAC) B.P: 278, Mohammedia, 28810, Morocco.
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Debnath A, Pathak DC, D'silva AL, Batheja R, Ramamurthy N, Vakharia VN, Chellappa MM, Dey S. Newcastle disease virus vectored rabies vaccine induces strong humoral and cell mediated immune responses in mice. Vet Microbiol 2020; 251:108890. [PMID: 33074114 DOI: 10.1016/j.vetmic.2020.108890] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 10/05/2020] [Indexed: 12/13/2022]
Abstract
Rabies is a devastating disease affecting almost all mammalian animal species including humans. Vaccines are available to combat the disease. Protection against the disease is rendered by assessing the humoral immune response. Recent reports suggest the role of cell mediated immune response (CMI) in assessing vaccine efficacy. In the present study, two live vectored vaccine candidates containing glycoprotein G of rabies virus were generated using the mesogenic Newcastle disease virus (NDV) strain R2B and another with NDV with an altered fusion protein cleavage site as backbones. The efficacy of these vaccine candidates on testing in experimental mouse model indicated generation of robust humoral and CMI responses. The recombinant NDV containing the altered fusion protein cleavage site with glycoprotein G showed the highest CMI response in mice indicating its usage as a potential live vectored vaccine candidate against the disease.
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Affiliation(s)
- Ashis Debnath
- Recombinant DNA Lab, Division of Veterinary Biotechnology, Indian Veterinary Research Institute, Izatnagar, Bareilly, 243 122, India
| | - Dinesh C Pathak
- Recombinant DNA Lab, Division of Veterinary Biotechnology, Indian Veterinary Research Institute, Izatnagar, Bareilly, 243 122, India
| | - Ajai Lawrence D'silva
- Recombinant DNA Lab, Division of Veterinary Biotechnology, Indian Veterinary Research Institute, Izatnagar, Bareilly, 243 122, India
| | - Rahul Batheja
- Recombinant DNA Lab, Division of Veterinary Biotechnology, Indian Veterinary Research Institute, Izatnagar, Bareilly, 243 122, India
| | - Narayan Ramamurthy
- Recombinant DNA Lab, Division of Veterinary Biotechnology, Indian Veterinary Research Institute, Izatnagar, Bareilly, 243 122, India
| | - Vikram N Vakharia
- Institute of Marine & Environmental Technology, University of Maryland Baltimore County, Baltimore, USA
| | - Madhan Mohan Chellappa
- Recombinant DNA Lab, Division of Veterinary Biotechnology, Indian Veterinary Research Institute, Izatnagar, Bareilly, 243 122, India.
| | - Sohini Dey
- Recombinant DNA Lab, Division of Veterinary Biotechnology, Indian Veterinary Research Institute, Izatnagar, Bareilly, 243 122, India.
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Murr M, Hoffmann B, Grund C, Römer-Oberdörfer A, Mettenleiter TC. A Novel Recombinant Newcastle Disease Virus Vectored DIVA Vaccine against Peste des Petits Ruminants in Goats. Vaccines (Basel) 2020; 8:vaccines8020205. [PMID: 32354145 PMCID: PMC7348985 DOI: 10.3390/vaccines8020205] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 04/21/2020] [Accepted: 04/24/2020] [Indexed: 02/06/2023] Open
Abstract
Peste des petits ruminants virus (PPRV, species: small ruminant morbillivirus) is the causative agent of the eponymous notifiable disease, the peste des petits ruminants (PPR) in wild and domestic sheep and goats. Mortality rates vary between 50% and 100%, causing significant losses of estimated 1.5 to 2 billion US Dollars per year. Live-attenuated PPRV vaccine strains are used in the field for disease prevention, but the application of a more thermostable vaccine enabling differentiation between infected and vaccinated animals (DIVA) would be highly desirable to achieve the goal of global disease eradication. We generated a recombinant Newcastle disease virus (rNDV) based on the live-attenuated NDV Clone 30 that expresses the surface protein hemagglutinin (H) of PPRV strain Kurdistan/11 (rNDV_HKur). In vitro analyses confirmed transgene expression as well as virus replication in avian, caprine, and ovine cells. Two consecutive subcutaneous vaccinations of German domestic goats with rNDV_HKur prevented clinical signs and hematogenic dissemination after an intranasal challenge with virulent PPRV Kurdistan/11. Virus shedding by different routes was reduced to a similar extent as after vaccination with the live-attenuated PPRV strain Nigeria 75/1. Goats that were either not vaccinated or inoculated with parental rNDV were used as controls. In summary, we demonstrate in a proof-of-concept study that an NDV vectored vaccine can protect against PPR. Furthermore, it provides DIVA-applicability and a high thermal tolerance.
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Affiliation(s)
- Magdalena Murr
- Institute of Molecular Virology and Cell Biology, Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Südufer 10, 17493 Greifswald-Insel Riems, Germany
- Correspondence: ; Tel.: +49-38351-7-1629
| | - Bernd Hoffmann
- Institute of Diagnostic Virology, Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Südufer 10, 17493 Greifswald-Insel Riems, Germany
| | - Christian Grund
- Institute of Diagnostic Virology, Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Südufer 10, 17493 Greifswald-Insel Riems, Germany
| | - Angela Römer-Oberdörfer
- Institute of Molecular Virology and Cell Biology, Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Südufer 10, 17493 Greifswald-Insel Riems, Germany
| | - Thomas C. Mettenleiter
- Institute of Molecular Virology and Cell Biology, Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Südufer 10, 17493 Greifswald-Insel Riems, Germany
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Novel avian paramyxovirus-based vaccine vectors expressing the Ebola virus glycoprotein elicit mucosal and humoral immune responses in guinea pigs. Sci Rep 2019; 9:5520. [PMID: 30940854 PMCID: PMC6445115 DOI: 10.1038/s41598-019-42004-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Accepted: 03/21/2019] [Indexed: 11/24/2022] Open
Abstract
Paramyxovirus vaccine vectors based on human parainfluenza virus type 3 (HPIV-3) and Newcastle disease virus (NDV) have been previously evaluated against Ebola virus (EBOV) challenge. Although both the viral vectored vaccines efficiently induce protective immunity, some concerns remain to be solved. Since HPIV-3 is a common human pathogen, the human population has pre-existing immunity to HPIV-3, which may restrict the replication of the vaccine vector. For NDV, mesogenic (intermediate virulent) strain used in previous studies is currently classified as a Select Agent in the United States, thus making it unsuitable to be used as a vaccine vector. To overcome these concerns, we have developed a modified NDV vector based on a mesogenic NDV strain, in which the ectodomains of envelope glycoproteins were replaced with the corresponding ectodomains from avian paramyxovirus serotype 3 (APMV-3). The modified NDV vector was highly attenuated in chickens and was able to express the EBOV glycoprotein (GP) gene at high level. In addition, the recombinant APMV-3 was also evaluated as a vaccine vector to express the EBOV GP gene. Guinea pigs immunized with these two vector vaccines developed high levels of neutralizing GP-specific IgG and IgA antibodies.
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9
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Yu GM, Zu SL, Zhou WW, Wang XJ, Shuai L, Wang XL, Ge JY, Bu ZG. Chimeric rabies glycoprotein with a transmembrane domain and cytoplasmic tail from Newcastle disease virus fusion protein incorporates into the Newcastle disease virion at reduced levels. J Vet Sci 2018; 18:351-359. [PMID: 27515260 PMCID: PMC5583423 DOI: 10.4142/jvs.2017.18.s1.351] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2015] [Revised: 04/29/2016] [Accepted: 07/21/2016] [Indexed: 11/20/2022] Open
Abstract
Rabies remains an important worldwide health problem. Newcastle disease virus (NDV) was developed as a vaccine vector in animals by using a reverse genetics approach. Previously, our group generated a recombinant NDV (LaSota strain) expressing the complete rabies virus G protein (RVG), named rL-RVG. In this study, we constructed the variant rL-RVGTM, which expresses a chimeric rabies virus G protein (RVGTM) containing the ectodomain of RVG and the transmembrane domain (TM) and a cytoplasmic tail (CT) from the NDV fusion glycoprotein to study the function of RVG's TM and CT. The RVGTM did not detectably incorporate into NDV virions, though it was abundantly expressed at the surface of infected BHK-21 cells. Both rL-RVG and rL-RVGTM induced similar levels of NDV virus-neutralizing antibody (VNA) after initial and secondary vaccination in mice, whereas rabies VNA induction by rL-RVGTM was markedly lower than that induced by rL-RVG. Though rL-RVG could spread from cell to cell like that in rabies virus, rL-RVGTM lost this ability and spread in a manner similar to the parental NDV. Our data suggest that the TM and CT of RVG are essential for its incorporation into NDV virions and for spreading of the recombinant virus from the initially infected cells to surrounding cells.
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Affiliation(s)
- Gui Mei Yu
- Key Laboratory of Veterinary Public Health of Ministry of Agriculture, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150001, China
| | - Shu Long Zu
- Key Laboratory of Veterinary Public Health of Ministry of Agriculture, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150001, China
| | - Wei Wei Zhou
- Key Laboratory of Veterinary Public Health of Ministry of Agriculture, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150001, China
| | - Xi Jun Wang
- Key Laboratory of Veterinary Public Health of Ministry of Agriculture, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150001, China
| | - Lei Shuai
- Key Laboratory of Veterinary Public Health of Ministry of Agriculture, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150001, China
| | - Xue Lian Wang
- Key Laboratory of Veterinary Public Health of Ministry of Agriculture, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150001, China
| | - Jin Ying Ge
- Key Laboratory of Veterinary Public Health of Ministry of Agriculture, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150001, China
| | - Zhi Gao Bu
- Key Laboratory of Veterinary Public Health of Ministry of Agriculture, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150001, China
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10
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Kuiken T, Buijs P, van Run P, van Amerongen G, Koopmans M, van den Hoogen B. Pigeon paramyxovirus type 1 from a fatal human case induces pneumonia in experimentally infected cynomolgus macaques (Macaca fascicularis). Vet Res 2017; 48:80. [PMID: 29162154 PMCID: PMC5697235 DOI: 10.1186/s13567-017-0486-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Accepted: 11/08/2017] [Indexed: 12/01/2022] Open
Abstract
Although avian paramyxovirus type 1 is known to cause mild transient conjunctivitis in human beings, there are two recent reports of fatal respiratory disease in immunocompromised human patients infected with the pigeon lineage of the virus (PPMV-1). In order to evaluate the potential of PPMV-1 to cause respiratory tract disease, we inoculated a PPMV-1 isolate (hPPMV-1/Netherlands/579/2003) from an immunocompromised human patient into three healthy cynomolgus macaques (Macaca fascicularis) and examined them by clinical, virological, and pathological assays. In all three macaques, PPMV-1 replication was restricted to the respiratory tract and caused pulmonary consolidation affecting up to 30% of the lung surface. Both alveolar and bronchiolar epithelial cells expressed viral antigen, which co-localized with areas of diffuse alveolar damage. The results of this study demonstrate that PPMV-1 is a primary respiratory pathogen in cynomolgus macaques, and support the conclusion that PPMV-1 may cause fatal respiratory disease in immunocompromised human patients.
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Affiliation(s)
- Thijs Kuiken
- Department of Viroscience, Erasmus University Medical Centre Rotterdam, Rotterdam, The Netherlands.
| | - Pascal Buijs
- Department of Viroscience, Erasmus University Medical Centre Rotterdam, Rotterdam, The Netherlands.,Department of Surgery, Elisabeth-TweeSteden Hospital, Tilburg, The Netherlands
| | - Peter van Run
- Department of Viroscience, Erasmus University Medical Centre Rotterdam, Rotterdam, The Netherlands
| | - Geert van Amerongen
- Department of Viroscience, Erasmus University Medical Centre Rotterdam, Rotterdam, The Netherlands
| | - Marion Koopmans
- Department of Viroscience, Erasmus University Medical Centre Rotterdam, Rotterdam, The Netherlands.,Centre for Infectious Disease Control, National Institute for Public Health and the Environment, Bilthoven, The Netherlands
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11
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Yoshida A, Samal SK. Avian Paramyxovirus Type-3 as a Vaccine Vector: Identification of a Genome Location for High Level Expression of a Foreign Gene. Front Microbiol 2017; 8:693. [PMID: 28473820 PMCID: PMC5397467 DOI: 10.3389/fmicb.2017.00693] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2016] [Accepted: 04/04/2017] [Indexed: 01/10/2023] Open
Abstract
Avian paramyxovirus serotype 3 (APMV-3) causes infection in a wide variety of avian species, but it does not cause apparent diseases in chickens. On the contrary, APMV-1, also known as Newcastle disease virus (NDV), can cause severe disease in chickens. Currently, natural low virulence strains of NDV are used as live-attenuated vaccines throughout the world. NDV is also being evaluated as a vaccine vector against poultry pathogens. However, due to routine vaccination programs, chickens often possess pre-existing antibodies against NDV, which may cause the chickens to be less sensitive to recombinant NDV vaccines expressing antigens of other avian pathogens. Therefore, it may be possible for an APMV-3 vector vaccine to circumvent this issue. In this study, we determined the optimal insertion site in the genome of APMV-3 for high level expression of a foreign gene. We generated recombinant APMV-3 viruses expressing the green fluorescent protein (GFP) by inserting the GFP gene at five different intergenic regions in the genome. The levels of GFP transcription and translation were evaluated. Interestingly, the levels of GFP transcription and translation did not follow the 3′-to-5′ attenuation mechanism of non-segmented, negative-sense RNA viruses. The insertion of GFP gene into the P-M gene junction resulted in higher level of expression of GFP than when the gene was inserted into the upstream N-P gene junction. Unlike NDV, insertion of GFP did not attenuate the growth efficiency of AMPV-3. Thus, APMV-3 could be a more useful vaccine vector for avian pathogens than NDV.
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Affiliation(s)
- Asuka Yoshida
- Virginia-Maryland Regional College of Veterinary Medicine, University of Maryland, College ParkMD, USA
| | - Siba K Samal
- Virginia-Maryland Regional College of Veterinary Medicine, University of Maryland, College ParkMD, USA
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12
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Duan Z, Xu H, Ji X, Zhao J. Recombinant Newcastle disease virus-vectored vaccines against human and animal infectious diseases. Future Microbiol 2015; 10:1307-23. [PMID: 26234909 DOI: 10.2217/fmb.15.59] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Recent advances in recombinant genetic engineering techniques have brought forward a leap in designing new vaccines in modern medicine. One attractive strategy is the application of reverse genetics technology to make recombinant Newcastle disease virus (rNDV) deliver protective antigens of pathogens. In recent years, numerous studies have demonstrated that rNDV-vectored vaccines can induce quicker and better humoral and mucosal immune responses than conventional vaccines and are protective against pathogen challenges. With deeper understanding of NDV molecular biology, it is feasible to develop gene-modified rNDV vaccines accompanied by good safety, high efficacy, low toxicity and better immunogenicity. This review summarizes the development of reverse genetics technology in using NDV as a promising vaccine vector to design new vaccines for human and animal use.
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Affiliation(s)
- Zhiqiang Duan
- College of Animal Science, Guizhou University, Guiyang 550025, Guizhou, China.,Key Laboratory of Animal Genetics, Breeding & Reproduction in the Plateau Mountainous Region, Ministry of Education, Guizhou University, Guiyang 550025, Guizhou, China
| | - Houqiang Xu
- College of Animal Science, Guizhou University, Guiyang 550025, Guizhou, China.,Key Laboratory of Animal Genetics, Breeding & Reproduction in the Plateau Mountainous Region, Ministry of Education, Guizhou University, Guiyang 550025, Guizhou, China
| | - Xinqin Ji
- College of Animal Science, Guizhou University, Guiyang 550025, Guizhou, China
| | - Jiafu Zhao
- College of Animal Science, Guizhou University, Guiyang 550025, Guizhou, China.,Key Laboratory of Animal Genetics, Breeding & Reproduction in the Plateau Mountainous Region, Ministry of Education, Guizhou University, Guiyang 550025, Guizhou, China
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13
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Abstract
The advent of reverse genetic approaches to manipulate the genomes of both positive (+) and negative (-) sense RNA viruses allowed researchers to harness these genomes for basic research. Manipulation of positive sense RNA virus genomes occurred first largely because infectious RNA could be transcribed directly from cDNA versions of the RNA genomes. Manipulation of negative strand RNA virus genomes rapidly followed as more sophisticated approaches to provide RNA-dependent RNA polymerase complexes coupled with negative-strand RNA templates were developed. These advances have driven an explosion of RNA virus vaccine vector development. That is, development of approaches to exploit the basic replication and expression strategies of RNA viruses to produce vaccine antigens that have been engineered into their genomes. This study has led to significant preclinical testing of many RNA virus vectors against a wide range of pathogens as well as cancer targets. Multiple RNA virus vectors have advanced through preclinical testing to human clinical evaluation. This review will focus on RNA virus vectors designed to express heterologous genes that are packaged into viral particles and have progressed to clinical testing.
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Affiliation(s)
- Mark A Mogler
- Harrisvaccines, Inc., 1102 Southern Hills Drive, Suite 101, Ames, IA 50010, USA
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14
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Buijs PRA, van Amerongen G, van Nieuwkoop S, Bestebroer TM, van Run PRWA, Kuiken T, Fouchier RAM, van Eijck CHJ, van den Hoogen BG. Intravenously injected Newcastle disease virus in non-human primates is safe to use for oncolytic virotherapy. Cancer Gene Ther 2014; 21:463-71. [PMID: 25257305 DOI: 10.1038/cgt.2014.51] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2014] [Accepted: 08/29/2014] [Indexed: 12/17/2022]
Abstract
Newcastle disease virus (NDV) is an avian paramyxovirus with oncolytic potential. Detailed preclinical information regarding the safety of oncolytic NDV is scarce. In this study, we evaluated the toxicity, biodistribution and shedding of intravenously injected oncolytic NDVs in non-human primates (Macaca fascicularis). Two animals were injected with escalating doses of a non-recombinant vaccine strain, a recombinant lentogenic strain or a recombinant mesogenic strain. To study transmission, naive animals were co-housed with the injected animals. Injection with NDV did not lead to severe illness in the animals or abnormalities in hematologic or biochemistry measurements. Injected animals shed low amounts of virus, but this did not lead to seroconversion of the contact animals. Postmortem evaluation demonstrated no pathological changes or evidence of virus replication. This study demonstrates that NDV generated in embryonated chicken eggs is safe for intravenous administration to non-human primates. In addition, our study confirmed results from a previous report that naïve primate and human sera are able to neutralize egg-generated NDV. We discuss the implications of these results for our study and the use of NDV for virotherapy.
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Affiliation(s)
- P R A Buijs
- Department of Surgery, Erasmus MC, Rotterdam, The Netherlands
| | | | - S van Nieuwkoop
- Department of Viroscience, Erasmus MC, Rotterdam, The Netherlands
| | - T M Bestebroer
- Department of Viroscience, Erasmus MC, Rotterdam, The Netherlands
| | - P R W A van Run
- Department of Viroscience, Erasmus MC, Rotterdam, The Netherlands
| | - T Kuiken
- Department of Viroscience, Erasmus MC, Rotterdam, The Netherlands
| | - R A M Fouchier
- Department of Viroscience, Erasmus MC, Rotterdam, The Netherlands
| | - C H J van Eijck
- Department of Surgery, Erasmus MC, Rotterdam, The Netherlands
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15
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Kim SH, Paldurai A, Xiao S, Collins PL, Samal SK. Modified Newcastle disease virus vectors expressing the H5 hemagglutinin induce enhanced protection against highly pathogenic H5N1 avian influenza virus in chickens. Vaccine 2014; 32:4428-4435. [PMID: 24968158 PMCID: PMC4794254 DOI: 10.1016/j.vaccine.2014.06.061] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2014] [Revised: 05/18/2014] [Accepted: 06/11/2014] [Indexed: 11/21/2022]
Abstract
Mesogenic Newcastle disease virus (NDV) strain Beaudette C (BC) was modified to enhance the protective efficacy of the foreign antigen. The modified NDV vectors were compared for their ability to express the HA protein of H5N1 HPAIV. The modified NDV vectors expressed enhanced levels of the HPAIV HA protein. Two of the modified NDV vectors induced higher levels of immunogenicity and protective efficacy against HPAIV. Two of the modified vectors were found to be superior to conventional rLaSota vector.
Naturally-occurring attenuated strains of Newcastle disease virus (NDV) are being developed as vaccine vectors for use in poultry and humans. However, some NDV strains, such as Beaudette C (BC), may retain too much virulence in poultry for safe use, and more highly attenuated strains may be suboptimally immunogenic. We therefore modified the BC strain by changing the multibasic cleavage site sequence of the F protein to the dibasic sequence of avirulent strain LaSota. Additionally, the BC, F, and HN proteins were modified in several ways to enhance virus replication. These modified BC-derived vectors and the LaSota strain were engineered to express the hemagglutin (HA) protein of H5N1 highly pathogenic influenza virus (HPAIV). In general, the modified BC-based vectors expressing HA replicated better than LaSota/HA, and expressed higher levels of HA protein. Pathogenicity tests indicated that all the modified viruses were highly attenuated in chickens. Based on in vitro characterization, two of the modified BC vectors were chosen for evaluation in chickens as vaccine vectors against H5N1 HPAIV A/Vietnam/1203/04. Immunization of chickens with rNDV vector vaccines followed by challenge with HPAIV demonstrated high levels of protection against clinical disease and mortality. However, only those chickens immunized with modified BC/HA in which residues 271–330 from the F protein had been replaced with the corresponding sequence from the NDV AKO strain conferred complete protection against challenge virus shedding. Our findings suggest that this modified rNDV can be used safely as a vaccine vector with enhanced replication, expression, and protective efficacy in avian species, and potentially in humans.
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Affiliation(s)
- Shin-Hee Kim
- Virginia-Maryland Regional College of Veterinary Medicine, University of Maryland, 8075 Greenmead Drive, College Park, MD, United States
| | - Anandan Paldurai
- Virginia-Maryland Regional College of Veterinary Medicine, University of Maryland, 8075 Greenmead Drive, College Park, MD, United States
| | - Sa Xiao
- Virginia-Maryland Regional College of Veterinary Medicine, University of Maryland, 8075 Greenmead Drive, College Park, MD, United States
| | - Peter L Collins
- Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, Bethesda, MD, United States
| | - Siba K Samal
- Virginia-Maryland Regional College of Veterinary Medicine, University of Maryland, 8075 Greenmead Drive, College Park, MD, United States.
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16
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Evaluation of the replication, pathogenicity, and immunogenicity of avian paramyxovirus (APMV) serotypes 2, 3, 4, 5, 7, and 9 in rhesus macaques. PLoS One 2013; 8:e75456. [PMID: 24130713 PMCID: PMC3794941 DOI: 10.1371/journal.pone.0075456] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2013] [Accepted: 08/15/2013] [Indexed: 11/19/2022] Open
Abstract
Avian paramyxoviruses (APMV) serotypes 1–9 are frequently isolated from domestic and wild birds worldwide. APMV-1 (also called Newcastle disease virus, NDV) is attenuated in non-human primates and is being developed as a candidate human vaccine vector. The vector potential of the other serotypes was unknown. In the present study, we evaluated nine different biologically- or recombinantly-derived APMV strains for the ability to replicate and cause disease in rhesus macaque model. Five of the viruses were: biologically-derived wild type (wt) APMV-2, -3, -5, -7 and -9. Another virus was a recombinant (r) version of wt APMV-4. The remaining three viruses were versions of wt rAPMV-2, -4 and -7 in which the F cleavage site had been modified to be multi-basic. Rhesus macaques were inoculated intranasally and intratracheally and monitored for clinical disease, virus shedding from the upper and lower respiratory tract, and seroconversion. Virus shedding was not detected for wt APMV-5. Very limited shedding was detected for wt rAPMV-4 and modified rAPMV-4, and only in a subset of animals. Shedding by the other viruses was detected in every infected animal, and usually from both the upper and lower respiratory tract. In particular, shedding over a number of days in every animal was observed for modified rAPMV-2, wt APMV-7, and modified rAPMV-7. Modification of the F protein cleavage site appeared to increase shedding by wt rAPMV-2 and marginally by wt rAPMV-4. All APMVs except wt APMV-5 induced a virus-specific serum antibody response in all infected animals. None of the animals exhibited any clinical disease signs. These results indicate that APMVs 2, 3, 4, 7, and 9 are competent to infect non-human primates, but are moderately-to-highly restricted, depending on the serotype. This suggests that they are not likely to significantly infect primates in nature, and represent promising attenuated candidates for vector development.
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17
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Bayon JCL, Lina B, Rosa-Calatrava M, Boivin G. Recent developments with live-attenuated recombinant paramyxovirus vaccines. Rev Med Virol 2012; 23:15-34. [DOI: 10.1002/rmv.1717] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2011] [Revised: 03/14/2012] [Accepted: 03/22/2012] [Indexed: 12/30/2022]
Affiliation(s)
- Jean-Christophe Le Bayon
- Laboratoire de Virologie et Pathologie Humaine, VirPath EMR 4610/Equipe VirCell, Université de Lyon; Université Claude Bernard Lyon 1 - Hospices Civils de Lyon, Faculté de médecine RTH Laennec; Lyon France
- Research Center in Infectious Diseases; CHUQ-CHUL and Université Laval; Québec City QC Canada
| | - Bruno Lina
- Laboratoire de Virologie et Pathologie Humaine, VirPath EMR 4610/Equipe VirCell, Université de Lyon; Université Claude Bernard Lyon 1 - Hospices Civils de Lyon, Faculté de médecine RTH Laennec; Lyon France
- Laboratoire de Virologie, Centre de Biologie et de Pathologie Est; Hospices Civils de Lyon; Lyon Bron Cedex France
| | - Manuel Rosa-Calatrava
- Laboratoire de Virologie et Pathologie Humaine, VirPath EMR 4610/Equipe VirCell, Université de Lyon; Université Claude Bernard Lyon 1 - Hospices Civils de Lyon, Faculté de médecine RTH Laennec; Lyon France
| | - Guy Boivin
- Research Center in Infectious Diseases; CHUQ-CHUL and Université Laval; Québec City QC Canada
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18
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Avian paramyxovirus serotype-1: a review of disease distribution, clinical symptoms, and laboratory diagnostics. Vet Med Int 2012; 2012:708216. [PMID: 22577610 PMCID: PMC3345259 DOI: 10.1155/2012/708216] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2011] [Revised: 01/03/2012] [Accepted: 01/04/2012] [Indexed: 01/19/2023] Open
Abstract
Avian paramyxovirus serotype-1 (APMV-1) is capable of infecting a wide range of avian species leading to a broad range of clinical symptoms. Ease of transmission has allowed the virus to spread worldwide with varying degrees of virulence depending on the virus strain and host species. Classification systems have been designed to group isolates based on their genetic composition. The genetic composition of the fusion gene cleavage site plays an important role in virulence. Presence of multiple basic amino acids at the cleavage site allows enzymatic cleavage of the fusion protein enabling virulent viruses to spread systemically. Diagnostic tests, including virus isolation, real-time reverse-transcription PCR, and sequencing, are used to characterize the virus and identify virulent strains. Genetic diversity within APMV-1 demonstrates the need for continual monitoring for changes that may arise requiring modifications to the molecular assays to maintain their usefulness for diagnostic testing.
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19
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Newcastle disease virus expressing human immunodeficiency virus type 1 envelope glycoprotein induces strong mucosal and serum antibody responses in Guinea pigs. J Virol 2011; 85:10529-41. [PMID: 21849467 DOI: 10.1128/jvi.05050-11] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Human immunodeficiency virus type 1 (HIV-1) is transmitted mainly through mucosal sites. Optimum strategies to elicit both systemic and mucosal immunity are critical for the development of vaccines against HIV-1. We therefore sought to evaluate the induction of systemic and mucosal immune responses by the use of Newcastle disease virus (NDV) as a vaccine vector. We generated a recombinant NDV, designated rLaSota/gp160, expressing the gp160 envelope (Env) protein of HIV-1 from an added gene. The gp160 protein expressed by rLaSota/gp160 virus was detected on an infected cell surface and was incorporated into the NDV virion. Biochemical studies showed that gp160 present in infected cells and in the virion formed a higher-order oligomer that retained recognition by conformationally sensitive monoclonal antibodies. Expression of gp160 did not increase the virulence of recombinant NDV (rNDV) strain LaSota. Guinea pigs were administered rLaSota/gp160 via the intranasal (i.n.) or intramuscular (i.m.) route in different prime-boost combinations. Systemic and mucosal antibody responses specific to the HIV-1 envelope protein were assessed in serum and vaginal washes, respectively. Two or three immunizations via the i.n. or i.m. route induced a more potent systemic and mucosal immune response than a single immunization by either route. Priming by the i.n. route was more immunogenic than by the i.m. route, and the same was true for the boosts. Furthermore, immunization with rLaSota/gp160 by any route or combination of routes induced a Th1-type response, as reflected by the induction of stronger antigen-specific IgG2a than IgG1 antibody responses. Additionally, i.n. immunization elicited a stronger neutralizing serum antibody response to laboratory-adapted HIV-1 strain MN.3. These data illustrate that it is feasible to use NDV as a vaccine vector to elicit potent humoral and mucosal responses to the HIV-1 envelope protein.
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20
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Ge J, Wang X, Tao L, Wen Z, Feng N, Yang S, Xia X, Yang C, Chen H, Bu Z. Newcastle disease virus-vectored rabies vaccine is safe, highly immunogenic, and provides long-lasting protection in dogs and cats. J Virol 2011; 85:8241-52. [PMID: 21632762 PMCID: PMC3147977 DOI: 10.1128/jvi.00519-11] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2011] [Accepted: 05/18/2011] [Indexed: 12/24/2022] Open
Abstract
Effective, safe, and affordable rabies vaccines are still being sought. Newcastle disease virus (NDV), an avian paramyxovirus, has shown promise as a vaccine vector for mammals. Here, we generated a recombinant avirulent NDV La Sota strain expressing the rabies virus glycoprotein (RVG) and evaluated its potential to serve as a vaccine against rabies. The recombinant virus, rL-RVG, retained its high-growth property in chicken eggs, with titers of up to 10⁹·⁸ 50% egg infective doses (EID₅₀)/ml of allantoic fluid. RVG expression enabled rL-RVG to spread from cell to cell in a rabies virus-like manner, and RVG was incorporated on the surface of the rL-RVG viral particle. RVG incorporation did not alter the trypsin-dependent infectivity of the NDV vector in mammalian cells. rL-RVG and La Sota NDV showed similar levels of sensitivity to a neutralization antibody against NDV and similar levels of resistance to a neutralization antibody against rabies virus. Animal studies demonstrated that rL-RVG is safe in several species, including cats and dogs, when administered as multiple high doses of recombinant vaccine. Intramuscular vaccination with rL-RVG induced a substantial rabies virus neutralization antibody response and provided complete protection from challenge with circulating rabies virus strains. Most importantly, rL-RVG induced strong and long-lasting protective neutralization antibody responses to rabies virus in dogs and cats. A low vaccine dose of 10⁸·³ EID₅₀ completely protected dogs from challenge with a circulating strain of rabies virus for more than a year. This is the first study to demonstrate that immunization with an NDV-vectored vaccine can induce long-lasting, systemic protective immunity against rabies.
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Affiliation(s)
- Jinying Ge
- Harbin Veterinary Research Institute, CAAS, 427 Maduan Street, Harbin 150001, People's Republic of China.
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21
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Xiao S, Kumar M, Yang X, Akkoyunlu M, Collins PL, Samal SK, Pal U. A host-restricted viral vector for antigen-specific immunization against Lyme disease pathogen. Vaccine 2011; 29:5294-303. [PMID: 21600949 PMCID: PMC3138909 DOI: 10.1016/j.vaccine.2011.05.010] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2011] [Revised: 04/21/2011] [Accepted: 05/05/2011] [Indexed: 11/21/2022]
Abstract
Newcastle disease virus (NDV) is an avian virus that is attenuated in primates and is a potential vaccine vector for human use. We evaluated NDV as a vector for expressing selected antigens of the Lyme disease pathogen Borrelia burgdorferi. A series of recombinant NDVs were generated that expressed intracellular or extracellular forms of two B. burgdorferi antigens: namely, the basic membrane protein A (BmpA) and the outer surface protein C (OspC). Expression of the intracellular and extracellular forms of these antigens was confirmed in cultured chicken cells. C3H or Balb/C mice that were immunized intranasally with the NDV vectors mounted vigorous serum antibody responses against the NDV vector, but failed to mount a robust response against either the intracellular or extracellular forms of BmpA or OspC. By contrast, a single immunization of hamsters with the NDV vectors via the intranasal, intramuscular, or intraperitoneal route resulted in rapid and rigorous antibody responses against the intracellular or extracellular forms of BmpA and OspC. When groups of hamsters were separately inoculated with various NDV vectors and challenged with B. burgdorferi (108 cells/animal), immunization with vector expressing either intracellular or extracellular BmpA was associated with a significant reduction of the pathogen load in the joints. Taken together, our studies highlighted the importance of NDV as vaccine vector that can be used for simple yet effective immunization of hosts against bacterial infections including Lyme disease.
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Affiliation(s)
- Sa Xiao
- Department of Veterinary Medicine, University of Maryland, College Park, MD 20742, USA
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22
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Blank F, Stumbles P, von Garnier C. Opportunities and challenges of the pulmonary route for vaccination. Expert Opin Drug Deliv 2011; 8:547-63. [PMID: 21438741 DOI: 10.1517/17425247.2011.565326] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
INTRODUCTION The respiratory tract is an attractive target for the delivery of vaccine antigens. Potential advantages of drug delivery by means of the pulmonary route include accessibility, non-invasiveness, ease of administration, and the possibility to reach an elaborate mucosal network of antigen-presenting cells. AREAS COVERED This review discusses current pulmonary vaccination strategies and their advantages and disadvantages. EXPERT OPINION To improve efficiency of vaccination and develop new strategies, a well-founded knowledge about composition and characterization of antigen-presenting cell populations throughout the respiratory tract is essential. In particular, respiratory tract dendritic cells, as key antigen-presenting cells in the lung, constitute an ideal target for vaccine delivery. Furthermore, particle size is a key factor when designing new inhalable vaccines, as size determines not only deposition in different respiratory tract compartments, but also how an antigen and its carrier will interact with lung tissue components and immune cells. An increased knowledge of different respiratory tract antigen-presenting cell populations and their interactions with other components of the immune system will enable new targeting strategies to improve the efficacy of pulmonary vaccination.
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Affiliation(s)
- Fabian Blank
- Bern University, Pulmonary Medicine, Department of Clinical Research, Murtenstrasse 50, CH-3010 Berne, Switzerland.
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DiNapoli JM, Yang L, Samal SK, Murphy BR, Collins PL, Bukreyev A. Respiratory tract immunization of non-human primates with a Newcastle disease virus-vectored vaccine candidate against Ebola virus elicits a neutralizing antibody response. Vaccine 2010; 29:17-25. [PMID: 21034822 PMCID: PMC3428043 DOI: 10.1016/j.vaccine.2010.10.024] [Citation(s) in RCA: 74] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2010] [Revised: 09/16/2010] [Accepted: 10/11/2010] [Indexed: 02/03/2023]
Abstract
We previously developed a respiratory tract vaccine candidate against Ebola virus (EBOV) based on human parainfluenza virus type 3 (HPIV3), a respiratory paramyxovirus, expressing the EBOV GP envelope protein (HPIV3/GP) from an added gene. Two doses of this vaccine candidate delivered by the intranasal and intratracheal route protected monkeys against intraperitoneal challenge with EBOV; however, concerns exist that the vaccine candidate may have reduced immunogenicity in the adult human population due to pre-existing immunity against HPIV3. Here we developed a new vaccine candidate (NDV/GP) based on Newcastle disease virus (NDV), an avian paramyxovirus that is antigenically distinct from human viral pathogens and is highly attenuated in monkeys. Following one intranasal and intratracheal inoculation of Rhesus monkeys with NDV/GP, titers of EBOV-specific antibodies in respiratory tract secretions and serum samples determined by ELISA, as well as serum EBOV-neutralizing antibodies, were undetectable or low compared to those induced by HPIV3/GP. A second immunization resulted in a substantial boost in serum IgG ELISA titers, yet the titers remained lower than those induced by a second dose of HPIV3/GP. In contrast, the ELISA IgA titers in respiratory tract secretions and, more importantly, the serum EBOV-neutralizing antibody titers were equal to those induced after the second dose of HPIV3/GP. These data suggest that NDV/GP can be effective for immunization against EBOV alone, or in combination with either HPIV3/GP or another vaccine platform in a heterologous prime-boost regimen.
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Affiliation(s)
- Joshua M DiNapoli
- Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892-MSC, USA
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Kortekaas J, de Boer SM, Kant J, Vloet RPM, Antonis AFG, Moormann RJM. Rift Valley fever virus immunity provided by a paramyxovirus vaccine vector. Vaccine 2010; 28:4394-401. [PMID: 20434545 DOI: 10.1016/j.vaccine.2010.04.048] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2010] [Revised: 04/05/2010] [Accepted: 04/15/2010] [Indexed: 11/16/2022]
Abstract
Rift Valley fever virus (RVFV) causes recurrent large outbreaks among humans and livestock. Although the virus is currently confined to the African continent and the Arabian Peninsula, there is a growing concern for RVFV incursions into countries with immunologically naïve populations. The RVFV structural glycoproteins Gn and Gc are preferred targets in the development of subunit vaccines that can be used to control future outbreaks. We here report the production of Gn and Gc by a recombinant vaccine strain of the avian paramyxovirus Newcastle disease virus (NDV) and demonstrate that intramuscular vaccination with this experimental NDV-based vector vaccine provides complete protection in mice. We also demonstrate that a single intramuscular vaccination of lambs, the main target species of RVFV, is sufficient to elicit a neutralizing antibody response.
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Affiliation(s)
- J Kortekaas
- Central Veterinary Institute of Wageningen University Research Centre, AB Lelystad, The Netherlands.
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25
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Immunization of cattle with recombinant Newcastle disease virus expressing bovine herpesvirus-1 (BHV-1) glycoprotein D induces mucosal and serum antibody responses and provides partial protection against BHV-1. Vaccine 2010; 28:3159-70. [PMID: 20189484 PMCID: PMC3428038 DOI: 10.1016/j.vaccine.2010.02.051] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2009] [Revised: 02/05/2010] [Accepted: 02/12/2010] [Indexed: 11/28/2022]
Abstract
Bovine herpesvirus-1 (BHV-1) is a major cause of respiratory tract diseases in cattle. Vaccination of cattle against BHV-1 is a high priority. A major concern of currently modified live BHV-1 vaccines is their ability to cause latent infection and subsequent reactivation resulting in many outbreaks. Thus, there is a need for alternative strategies. We generated two recombinant Newcastle disease viruses (NDVs) expressing the glycoprotein D (gD) of BHV-1 from an added gene. One recombinant, rLaSota/gDFL, expressed gD without any modification. The other recombinant, rLaSota/gDF, expressed a chimeric gD in which the ectodomain of gD was fused with the transmembrane domain and cytoplasmic tail of the NDV fusion F glycoprotein. Remarkably, the native gD expressed by rLaSota/gDFL virus was incorporated into the NDV virion 2.5-fold more efficiently than the native NDV proteins, whereas the chimeric gD was not detectably incorporated even though it was abundantly expressed on the infected cell surface. The expression of gD did not increase the virulence of the rNDV vectors in chickens. A single intranasal and intratracheal inoculation of calves with either recombinant NDV elicited mucosal and systemic antibodies specific to BHV-1, with the responses to rLaSota/gDFL being higher than those to rLaSota/gDF. Following challenge with BHV-1, calves immunized with the recombinant NDVs had lower titers and earlier clearance of challenge virus compared to the empty vector control, and reduced disease was observed with rLaSota/gDFL. Following challenge, the titers of serum antibodies specific to BHV-1 were higher in the animals immunized with the rNDV vaccines compared to the rNDV parent virus, indicating that the vaccines primed for secondary responses. Our data suggest that NDV can be used as a vaccine vector in bovines and that BHV-1 gD may be useful in mucosal vaccine against BHV-1 infection, but might require augmentation by a second dose or the inclusion of additional BHV-1 antigens.
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Kortekaas J, Dekker A, de Boer SM, Weerdmeester K, Vloet RPM, de Wit AAC, Peeters BPH, Moormann RJM. Intramuscular inoculation of calves with an experimental Newcastle disease virus-based vector vaccine elicits neutralizing antibodies against Rift Valley fever virus. Vaccine 2010; 28:2271-6. [PMID: 20079874 DOI: 10.1016/j.vaccine.2010.01.001] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2009] [Revised: 01/04/2010] [Accepted: 01/06/2010] [Indexed: 12/01/2022]
Abstract
In the past decade, the use of Newcastle disease virus (NDV) as a vaccine vector for the prevention of economically important livestock diseases as well as for human diseases has been extensively explored. In this study, we have constructed a recombinant NDV vaccine virus, named NDFL-Gn, that produces the Rift Valley fever virus (RVFV) Gn glycoprotein. Calves were immunized via either the intranasal route or the intramuscular route. Delivery via the intranasal route elicited no detectable antibody responses, whereas delivery via the intramuscular route elicited antibodies against both NDV and the Gn protein. The RVFV-neutralizing activity of the antisera from intramuscularly vaccinated calves was demonstrated, suggesting that NDV is a promising vaccine vector for the prevention of RVF in calves.
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Affiliation(s)
- J Kortekaas
- Virology Division, Cluster of Mammalian Virology, Central Veterinary Institute of Wageningen University Research Centre, P.O. Box 65, 8200 AB Lelystad, The Netherlands.
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Newcastle disease virus-vectored vaccines expressing the hemagglutinin or neuraminidase protein of H5N1 highly pathogenic avian influenza virus protect against virus challenge in monkeys. J Virol 2009; 84:1489-503. [PMID: 19923177 DOI: 10.1128/jvi.01946-09] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
H5N1 highly pathogenic avian influenza virus (HPAIV) causes periodic outbreaks in humans, resulting in severe infections with a high (60%) incidence of mortality. The circulating strains have low human-to-human transmissibility; however, widespread concerns exist that enhanced transmission due to mutations could lead to a global pandemic. We previously engineered Newcastle disease virus (NDV), an avian paramyxovirus, as a vector to express the HPAIV hemagglutinin (HA) protein, and we showed that this vaccine (NDV/HA) induced a high level of HPAIV-specific mucosal and serum antibodies in primates when administered through the respiratory tract. Here we developed additional NDV-vectored vaccines expressing either HPAIV HA in which the polybasic cleavage site was replaced with that from a low-pathogenicity strain of influenza virus [HA(RV)], in order to address concerns of enhanced vector replication or genetic exchange, or HPAIV neuraminidase (NA). The three vaccine viruses [NDV/HA, NDV/HA(RV), and NDV/NA] were administered separately to groups of African green monkeys by the intranasal/intratracheal route. An additional group of animals received NDV/HA by aerosol administration. Each of the vaccine constructs was highly restricted for replication, with only low levels of virus shedding detected in respiratory secretions. All groups developed high levels of neutralizing antibodies against homologous and heterologous strains of HPAIV and were protected against challenge with 2 x 10(7) PFU of homologous HPAIV. Thus, needle-free, highly attenuated NDV-vectored vaccines expressing either HPAIV HA, HA(RV), or NA have been developed and demonstrated to be individually immunogenic and protective in a primate model of HPAIV infection. The finding that HA(RV) was protective indicates that it would be preferred for inclusion in a vaccine. The study also identified NA as an independent protective HPAIV antigen in primates. Furthermore, we demonstrated the feasibility of aerosol delivery of NDV-vectored vaccines.
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The interferon antagonistic activities of the V proteins from two strains of Newcastle disease virus correlate with their known virulence properties. Virus Res 2009; 147:153-7. [PMID: 19896994 DOI: 10.1016/j.virusres.2009.10.020] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2009] [Revised: 10/26/2009] [Accepted: 10/28/2009] [Indexed: 11/24/2022]
Abstract
Newcastle disease virus (NDV) is an avian paramyxovirus that exists as hundreds of strains with widely different virulence properties. The NDV V protein exhibits interferon (IFN) antagonistic activity, which contributes to the virulence of the virus. The IFN-antagonistic activities of the V proteins from the avirulent strain La Sota and the moderately virulent strain Beaudette C (BC) were compared in an assay for the rescue of a recombinant NDV expressing the green fluorescent protein (NDV-GFP). Consistent with the virulence properties of the two viruses, the BC V protein exhibits a 4-fold greater ability to rescue replication of NDV-GFP than the La Sota V protein. Four amino acid differences in the C-terminal region of V, as well as the N-terminal region, contribute to the difference in IFN-antagonistic activity between the two V proteins.
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