Newcastle Disease Virus Vectored Chicken Infectious Anaemia Vaccine Induces Robust Immune Response in Chickens
Newcastle disease virus (NDV) strain R2B, with an altered fusion protein cleavage site, was used as a viral vector to deliver the immunogenic genes VP2 and VP1 of chicken infectious anaemia virus (CIAV) to generate a bivalent vaccine candidate against these diseases in chickens. The immunogenic gene...
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MDPI AG
2021-10-01
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| Online Access: | https://www.mdpi.com/1999-4915/13/10/1985 |
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| author | Madhan Mohan Chellappa Sohini Dey Dinesh Chandra Pathak Asmita Singh Narayan Ramamurthy Saravanan Ramakrishnan Asok Kumar Mariappan Kuldeep Dhama Vikram N. Vakharia |
| author_facet | Madhan Mohan Chellappa Sohini Dey Dinesh Chandra Pathak Asmita Singh Narayan Ramamurthy Saravanan Ramakrishnan Asok Kumar Mariappan Kuldeep Dhama Vikram N. Vakharia |
| author_sort | Madhan Mohan Chellappa |
| collection | DOAJ |
| description | Newcastle disease virus (NDV) strain R2B, with an altered fusion protein cleavage site, was used as a viral vector to deliver the immunogenic genes VP2 and VP1 of chicken infectious anaemia virus (CIAV) to generate a bivalent vaccine candidate against these diseases in chickens. The immunogenic genes of CIAV were expressed as a single transcriptional unit from the NDV backbone and the two CIA viral proteins were obtained as separate entities using a self-cleaving foot-and-mouth disease virus 2A protease sequence between them. The recombinant virus (rR2B-FPCS-CAV) had similar growth kinetics as that of the parent recombinant virus (rR2B-FPCS) in vitro with similar pathogenicity characteristics. The bivalent vaccine candidate when given in specific pathogen-free chickens as primary and booster doses was able to elicit robust humoral and cell-mediated immune (CMI) responses obtained in a vaccination study that was conducted over a period of 15 weeks. In an NDV and CIAV ELISA trial, there was a significant difference in the titres of antibody between vaccinated and control groups which showed slight reduction in antibody titre by 56 days of age. Hence, a second booster was administered and the antibody titres were maintained until 84 days of age. Similar trends were noticed in CMI response carried out by lymphocyte transformation test, CD4<sup>+</sup> and CD8<sup>+</sup> response by flow cytometry analysis and response of real time PCR analysis of cytokine genes. Birds were challenged with virulent NDV and CIAV at 84 days and there was significant reduction in the NDV shed on the 2nd and 4th days post challenge in vaccinated birds as compared to unvaccinated controls. Haematological parameters comprising PCV, TLC, PLC and PHC were estimated in birds that were challenged with CIAV that indicated a significant reduction in the blood parameters of controls. Our findings support the development and assessment of a bivalent vaccine candidate against NDV and CIAV in chickens. |
| first_indexed | 2024-03-10T06:08:21Z |
| format | Article |
| id | doaj.art-48146a22cab0428d9b4671cf43a44f44 |
| institution | Directory Open Access Journal |
| issn | 1999-4915 |
| language | English |
| last_indexed | 2024-03-10T06:08:21Z |
| publishDate | 2021-10-01 |
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| spelling | doaj.art-48146a22cab0428d9b4671cf43a44f442023-11-22T20:19:02ZengMDPI AGViruses1999-49152021-10-011310198510.3390/v13101985Newcastle Disease Virus Vectored Chicken Infectious Anaemia Vaccine Induces Robust Immune Response in ChickensMadhan Mohan Chellappa0Sohini Dey1Dinesh Chandra Pathak2Asmita Singh3Narayan Ramamurthy4Saravanan Ramakrishnan5Asok Kumar Mariappan6Kuldeep Dhama7Vikram N. Vakharia8Recombinant DNA Laboratory, Division of Veterinary Biotechnnology, Indian Veterinary Research Institute, Bareilly 243122, UP, IndiaRecombinant DNA Laboratory, Division of Veterinary Biotechnnology, Indian Veterinary Research Institute, Bareilly 243122, UP, IndiaRecombinant DNA Laboratory, Division of Veterinary Biotechnnology, Indian Veterinary Research Institute, Bareilly 243122, UP, IndiaRecombinant DNA Laboratory, Division of Veterinary Biotechnnology, Indian Veterinary Research Institute, Bareilly 243122, UP, IndiaRecombinant DNA Laboratory, Division of Veterinary Biotechnnology, Indian Veterinary Research Institute, Bareilly 243122, UP, IndiaImmunology Section, Indian Veterinary Research Institute, Bareilly 243122, UP, IndiaDivision of Pathology, Indian Veterinary Research Institute, Bareilly 243122, UP, IndiaDivision of Pathology, Indian Veterinary Research Institute, Bareilly 243122, UP, IndiaInstitute of Marine and Environmental Technology, University of Maryland Baltimore County, Baltimore, MD 21202, USANewcastle disease virus (NDV) strain R2B, with an altered fusion protein cleavage site, was used as a viral vector to deliver the immunogenic genes VP2 and VP1 of chicken infectious anaemia virus (CIAV) to generate a bivalent vaccine candidate against these diseases in chickens. The immunogenic genes of CIAV were expressed as a single transcriptional unit from the NDV backbone and the two CIA viral proteins were obtained as separate entities using a self-cleaving foot-and-mouth disease virus 2A protease sequence between them. The recombinant virus (rR2B-FPCS-CAV) had similar growth kinetics as that of the parent recombinant virus (rR2B-FPCS) in vitro with similar pathogenicity characteristics. The bivalent vaccine candidate when given in specific pathogen-free chickens as primary and booster doses was able to elicit robust humoral and cell-mediated immune (CMI) responses obtained in a vaccination study that was conducted over a period of 15 weeks. In an NDV and CIAV ELISA trial, there was a significant difference in the titres of antibody between vaccinated and control groups which showed slight reduction in antibody titre by 56 days of age. Hence, a second booster was administered and the antibody titres were maintained until 84 days of age. Similar trends were noticed in CMI response carried out by lymphocyte transformation test, CD4<sup>+</sup> and CD8<sup>+</sup> response by flow cytometry analysis and response of real time PCR analysis of cytokine genes. Birds were challenged with virulent NDV and CIAV at 84 days and there was significant reduction in the NDV shed on the 2nd and 4th days post challenge in vaccinated birds as compared to unvaccinated controls. Haematological parameters comprising PCV, TLC, PLC and PHC were estimated in birds that were challenged with CIAV that indicated a significant reduction in the blood parameters of controls. Our findings support the development and assessment of a bivalent vaccine candidate against NDV and CIAV in chickens.https://www.mdpi.com/1999-4915/13/10/1985Newcastle diseasechicken infectious anaemiabivalent vaccinereverse geneticsimmune responsechallenge study |
| spellingShingle | Madhan Mohan Chellappa Sohini Dey Dinesh Chandra Pathak Asmita Singh Narayan Ramamurthy Saravanan Ramakrishnan Asok Kumar Mariappan Kuldeep Dhama Vikram N. Vakharia Newcastle Disease Virus Vectored Chicken Infectious Anaemia Vaccine Induces Robust Immune Response in Chickens Viruses Newcastle disease chicken infectious anaemia bivalent vaccine reverse genetics immune response challenge study |
| title | Newcastle Disease Virus Vectored Chicken Infectious Anaemia Vaccine Induces Robust Immune Response in Chickens |
| title_full | Newcastle Disease Virus Vectored Chicken Infectious Anaemia Vaccine Induces Robust Immune Response in Chickens |
| title_fullStr | Newcastle Disease Virus Vectored Chicken Infectious Anaemia Vaccine Induces Robust Immune Response in Chickens |
| title_full_unstemmed | Newcastle Disease Virus Vectored Chicken Infectious Anaemia Vaccine Induces Robust Immune Response in Chickens |
| title_short | Newcastle Disease Virus Vectored Chicken Infectious Anaemia Vaccine Induces Robust Immune Response in Chickens |
| title_sort | newcastle disease virus vectored chicken infectious anaemia vaccine induces robust immune response in chickens |
| topic | Newcastle disease chicken infectious anaemia bivalent vaccine reverse genetics immune response challenge study |
| url | https://www.mdpi.com/1999-4915/13/10/1985 |
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