1
|
Falkenberg SM, Ma H, Casas E, Dassanayake RP, Bolton MW, Raithel G, Silvis S, Neill JD, Walz PH. Multivariate Analysis as a Method to Evaluate Antigenic Relationships between Bovine Viral Diarrhea Virus 1b Isolates and Vaccine Strains. Viruses 2023; 15:2085. [PMID: 37896862 PMCID: PMC10612043 DOI: 10.3390/v15102085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 10/09/2023] [Accepted: 10/10/2023] [Indexed: 10/29/2023] Open
Abstract
The antigenicity of bovine viral diarrhea virus (BVDV) has been evaluated using virus-neutralizing titer data analyzed by principal component analysis (PCA) and has demonstrated numerous isolates to be antigenically divergent from US vaccine strains. The lack of BVDV-1b strains in currently licensed vaccines has raised concerns regarding the lack of protection against BVDV-1b field strains. The aim of this study was to evaluate the antigenic diversity of BVDV-1b strains and better understand the breadth of antigenic relatedness using BVDV-1b antisera and antisera from vaccine strains. Results from this analysis demonstrate the antigenic diversity observed among BVDV-1b isolates and genetic assignment into the BVDV-1b subgenotype is not representative of antigenic relatedness. This is demonstrated by BVDV-1b isolates (2280N, SNc, Illc, MSU, and 2337) observed to be as antigenically dissimilar as BVDV-2a isolates when using BVDV-1b antisera. Additionally, when BVDV-1a vaccine antisera was used for comparisons, a greater percentage of BVDV-1b isolates clustered with BVDV-1a vaccine strains as part of PC1, suggesting antigenic relatedness and potentially partial protection. Collectively, data from this study would suggest that while most BVDV-1b isolates are antigenically similar, there are antigenically dissimilar BVDV-1b isolates as determined by the lack of cross-reactivity, which may contribute to the lack of protection.
Collapse
Affiliation(s)
- Shollie M. Falkenberg
- Sugg Laboratory, Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL 36849, USA (S.S.); (P.H.W.)
- Ruminant Disease and Immunology Research Unit, National Animal Disease Center, USDA, Agricultural Research Service, Ames, IA 50010, USA (J.D.N.)
| | - Hao Ma
- Ruminant Disease and Immunology Research Unit, National Animal Disease Center, USDA, Agricultural Research Service, Ames, IA 50010, USA (J.D.N.)
| | - Eduardo Casas
- Ruminant Disease and Immunology Research Unit, National Animal Disease Center, USDA, Agricultural Research Service, Ames, IA 50010, USA (J.D.N.)
| | - Rohana P. Dassanayake
- Ruminant Disease and Immunology Research Unit, National Animal Disease Center, USDA, Agricultural Research Service, Ames, IA 50010, USA (J.D.N.)
| | | | - Gage Raithel
- Sugg Laboratory, Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL 36849, USA (S.S.); (P.H.W.)
| | - Scott Silvis
- Sugg Laboratory, Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL 36849, USA (S.S.); (P.H.W.)
| | - John D. Neill
- Ruminant Disease and Immunology Research Unit, National Animal Disease Center, USDA, Agricultural Research Service, Ames, IA 50010, USA (J.D.N.)
| | - Paul H. Walz
- Sugg Laboratory, Department of Pathobiology, College of Veterinary Medicine, Auburn University, Auburn, AL 36849, USA (S.S.); (P.H.W.)
| |
Collapse
|
2
|
Al-Kubati AAG, Kandeel M, Hussen J, Hemida MG, Al-Mubarak AIA. Immunoinformatic prediction of the pathogenicity of bovine viral diarrhea virus genotypes: implications for viral virulence determinants, designing novel diagnostic assays and vaccines development. Front Vet Sci 2023; 10:1130147. [PMID: 37483297 PMCID: PMC10359904 DOI: 10.3389/fvets.2023.1130147] [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: 12/22/2022] [Accepted: 05/31/2023] [Indexed: 07/25/2023] Open
Abstract
Introduction Bovine viral diarrhea virus (BVDV) significantly impacts the bovine industries, both dairy and beef sectors. BVDV can infect various domestic and wild animals, most notably cattle. The dynamic variations among BVDV serotypes due to the continuous genetic diversity, especially in BVDV1 (BVDV1), reduce the effectiveness of the currently available vaccines and reduce the specificity/sensitivity of the diagnostic assays. The development of novel, safe, and effective vaccines against BVDV requires deep knowledge of the antigenicity and virulence of the virus. Previous studies on the antigenicity and the virulence of BVDV serotypes have been mainly focused on one or a few BVDV proteins. While however, little is known about the orchestration of all BVDV in the context of viral virulence and immunogenicity. The main aim of the current study was to do a comparative computational evaluation of the immunogenicity, and virulence for all the encoded proteins of both BVDV1 and BVDV2 and their sub-genotypes. Methods To achieve this goal, 11,737 protein sequences were retrieved from Virus Pathogen Resource. The analysis involved a total of 4,583 sequences after the removal of short sequences and those with unknown collection time. We used the MP3 tool to map the pathogenic proteins across different BVDV strains. The potential protective and the epitope motifs were predicted using the VaxiJen and EMBOSS antigen tools, respectively. Results and discussion The virulence prediction revealed that the NS4B proteins of both BVDV1 and BVDV2 likely have essential roles in BVDV virulence. Similarly, both the capsid (C) and the NS4-A proteins of BVDV1 and the Npro and P7 proteins of BVDV2 are likely important virulent factors. There was a clear trend of increasing predicted virulence with the progression of time in the case of BVDV1 proteins, but that was not the case for the BVDV2 proteins. Most of the proteins of the two BVDV serotypes possess antigens predicted immunogens except Npro, P7, and NS4B. However, the predicted antigenicity of the BVDV1 was significantly higher than that of BVDV2. Meanwhile, the predicted immunogenicity of the immunodominant-E2 protein has been decreasing over time. Based on our predicted antigenicity and pathogenicity studies of the two BVDV serotypes, the sub-genotypes (1a, 1f, 1k, 2a, and 2b) may represent ideal candidates for the development of future vaccines against BVDV infection in cattle. In summary, we identified some common differences between the two BVDV genotypes (BVDV1 and BVDV2) and their sub-genotypes regarding their protein antigenicity and pathogenicity. The data presented here will increase our understanding of the molecular pathogenesis of BVDV infection in cattle. It will also pave the way for developing some novel diagnostic assays and novel vaccines against BVDV in the near future.
Collapse
Affiliation(s)
- Anwar A. G. Al-Kubati
- Department of Veterinary Medicine, Faculty of Agriculture and Veterinary Medicine, Thamar University, Thamar, Yemen
| | - Mahmoud Kandeel
- Department of Biomedical Sciences, College of Veterinary Medicine, King Faisal University, Al-Hofuf, Saudi Arabia
- Department of Pharmacology, Faculty of Veterinary Medicine, Kafrelsheikh University, Kafrelsheikh, Egypt
| | - Jamal Hussen
- Department of Microbiology, College of Veterinary Medicine, King Faisal University, Al-Hofuf, Saudi Arabia
- Department of Veterinary Biomedical Sciences, College of Veterinary Medicine, Long Island University, New York, NY, United States
| | - Maged Gomaa Hemida
- Department of Microbiology, College of Veterinary Medicine, King Faisal University, Al-Hofuf, Saudi Arabia
| | - Abdullah I. A. Al-Mubarak
- Department of Microbiology, College of Veterinary Medicine, King Faisal University, Al-Hofuf, Saudi Arabia
- Department of Veterinary Biomedical Sciences, College of Veterinary Medicine, Long Island University, New York, NY, United States
| |
Collapse
|
3
|
Perkins-Oines S, Dias N, Krafsur G, Abdelsalam K, Perry G, Ensley D, Jones C, Chase CCL. The effect of neonatal vaccination for bovine respiratory disease in the face of a dual challenge with bovine viral diarrhea virus and Mannheimia hemolytica. Vaccine 2023; 41:3080-3091. [PMID: 37045678 DOI: 10.1016/j.vaccine.2023.04.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Revised: 03/28/2023] [Accepted: 04/03/2023] [Indexed: 04/14/2023]
Abstract
Bovine respiratory disease is the greatest threat to calf health. In this study, colostrum-fed dairy X beef calves were vaccinated at ∼30 days of age with an adjuvanted parenteral vaccine containing modified live bovine viral diarrhea virus (BVDV) type 1 and type 2, bovine herpesvirus 1 (BHV-1), bovine parainfluenza type 3 virus (PI3V) and bovine respiratory syncytial virus (BRSV) andM. haemolyticatoxoid (Group 1), or intranasal temperature-sensitive BHV-1, BRSV and PI3V concurrently witha parenteral vaccine containing modified live BVDV type 1 and type 2 andM. haemolyticatoxoid (Group 2) or a placebo (Group 3). The calves were challenged ∼150 days post vaccination intranasally with BVDV 1b and then 7 days later intratracheally withM. haemolytica. The calves wereeuthanized 6 days after theM. haemolyticachallenge. Clinical signs following BVDV infection were similar in all groups. There was increased rectal temperatures in the Groups 2 and 3 on day 3 and in Group 3 on days 8-13. Group 1 animals had a slight leukopenia following BVDV infection while Groups 2 and 3 had greater leukopenia. BVDV type 1 and 2 serum titers increased in Group 1 following vaccination while these titers waned in Groups 2 and 3. There were higher levels of BVDV in the buffy coats and nasal samples in Group 2 and Group 3 versus Group 1 (p < 0.01). Interferon-gamma response was higher (p < 0.01) in Group 1 animals than Groups 2 and 3. Group 1 had the lowest percent pneumonic tissue (1.6%) while Group 2 vaccinates had 3.7% and the control Group 3 was 5.3%. Vaccination in the face of maternal antibody with a parenteral adjuvanted vaccine resulted in better protection than the regimen of an intranasal vaccine anda parenteral adjuvanted BVDV andM haemolyticacombination vaccine in a BVDV-M. haemolyticadual challenge.
Collapse
Affiliation(s)
| | | | | | | | - George Perry
- Texas A&M AgriLife Research and Extension Center, Overton, TX, United States
| | - Douglas Ensley
- Boehringer Ingelheim Animal Health, Duluth, GA, United States
| | - Craig Jones
- Boehringer Ingelheim Animal Health, Duluth, GA, United States
| | - Christopher C L Chase
- RTI LLC, Brookings, SD 57006, United States; Department of Veterinary and Biomedical Sciences, South Dakota State University, Brookings, SD, United States.
| |
Collapse
|
4
|
Katsura M, Fukushima M, Kameyama KI, Kokuho T, Nakahira Y, Takeuchi K. Novel bovine viral diarrhea virus (BVDV) virus-like particle vaccine candidates presenting the E2 protein using the SpyTag/SpyCatcher system induce a robust neutralizing antibody response in mice. Arch Virol 2023; 168:49. [PMID: 36609880 PMCID: PMC9825097 DOI: 10.1007/s00705-022-05653-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Accepted: 11/07/2022] [Indexed: 01/08/2023]
Abstract
Bovine viral diarrhea virus (BVDV) is a pathogen of commercial consequence in cattle. Although many modified live and killed vaccines are commercially available, their drawbacks precipitate the need for new effective vaccines. Virus-like particles (VLPs) are a safe and powerful technology used in several human and veterinary vaccines; however, it is difficult to produce large amounts of BVDV VLPs. In this study, we generated red-spotted grouper nervous necrosis virus (RGNNV) VLPs presenting the BVDV E2 protein (domain I to IIIb) of the Nose (BVDV-1) or KZ-91-CP (BVDV-2) strain by exploiting SpyTag/SpyCatcher technology. Mice immunized twice with 30 μg of RGNNV VLPs conjugated with 10 μg of E2 proteins of the Nose or KZ-91-CP strain with a 14-day interval elicited high (1:512,000 to 1:1,024,000) and moderate (1:25,600 to 1:102,400) IgG titers against E2 proteins of homologous and heterologous strains, respectively. In addition, this prime-boost regimen induced strong (1:800 to 1:3,200) and weak (~1:10) neutralization titers against homologous and heterologous BVDV strains, respectively. Our results indicate that conjugation of the E2 protein to RGNNV VLPs strongly enhances the antigenicity of the E2 protein and that RGNNV VLPs presenting the E2 protein are promising BVDV vaccine candidates.
Collapse
Affiliation(s)
- Miki Katsura
- grid.20515.330000 0001 2369 4728Laboratory of Environmental Microbiology, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8575 Japan
| | - Masaki Fukushima
- grid.20515.330000 0001 2369 4728Laboratory of Environmental Microbiology, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8575 Japan
| | - Ken-ichiro Kameyama
- grid.416882.10000 0004 0530 9488Exotic Disease Research Group, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), 6-20-1 Josuihoncho, Kodaira, Tokyo 187-0022 Japan
| | - Takehiko Kokuho
- grid.416882.10000 0004 0530 9488Exotic Disease Research Group, National Institute of Animal Health, National Agriculture and Food Research Organization (NARO), 6-20-1 Josuihoncho, Kodaira, Tokyo 187-0022 Japan
| | - Yoichi Nakahira
- grid.410773.60000 0000 9949 0476College of Agriculture, Ibaraki University, 3-21 Chuo, Ami, Ibaraki 300-0332 Japan
| | - Kaoru Takeuchi
- Laboratory of Environmental Microbiology, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8575, Japan.
| |
Collapse
|
5
|
Use of multivariate analysis to evaluate antigenic relationships between US BVDV vaccine strains and non-US genetically divergent isolates. J Virol Methods 2021; 299:114328. [PMID: 34710497 DOI: 10.1016/j.jviromet.2021.114328] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 09/27/2021] [Accepted: 10/08/2021] [Indexed: 01/21/2023]
Abstract
Bovine viral diarrhea virus (BVDV) comprises two species, BVDV-1 and BVDV-2. But given the genetic diversity among pestiviruses, at least 22 subgenotypes are described for BVDV-1 and 3-4 for BVDV-2. Genetic characterization is generally accomplished through complete or partial sequencing and phylogeny, but it is not a reliable method to define antigenic relationships. The traditional method for evaluating antigenic relationships between pestivirus isolates is the virus neutralization (VN) assay, but interpretation of the data to define antigenic relatedness can be difficult to discern for BVDV isolates within the same BVDV species. Data from this study utilized a multivariate analysis for visualization of VN results to analyze the antigenic relationships between US vaccine strains and field isolates from Switzerland, Italy, Brazil, and the UK. Polyclonal sera were generated against six BVDV strains currently contained in vaccine formulations, and each serum was used in VNs to measure the titers against seven vaccine strains (including the six homologous strains) and 23 BVDV field isolates. Principal component analysis (PCA) was performed using VN titers, and results were interpreted from PCA clustering within the PCA dendrogram and scatter plot. The results demonstrated clustering patterns among various isolates suggesting antigenic relatedness. As expected, the BVDV-1 and BVDV-2 isolates did not cluster together and had the greatest spatial distribution. Notably, a number of clusters representing antigenically related BVDV-1 subgroups contain isolates of different subgenotypes. The multivariate analysis may be a method to better characterize antigenic relationships among BVDV isolates that belong to the same BVDV species and do not have distinct antigenic differences. This might be an invaluable tool to ameliorate the composition of current vaccines, which might well be important for the success of any BVDV control program that includes vaccination in its scheme.
Collapse
|
6
|
Sangewar N, Hassan W, Lokhandwala S, Bray J, Reith R, Markland M, Sang H, Yao J, Fritz B, Waghela SD, Abdelsalam KW, Chase CCL, Mwangi W. Mosaic Bovine Viral Diarrhea Virus Antigens Elicit Cross-Protective Immunity in Calves. Front Immunol 2020; 11:589537. [PMID: 33281819 PMCID: PMC7690067 DOI: 10.3389/fimmu.2020.589537] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 10/14/2020] [Indexed: 11/13/2022] Open
Abstract
Bovine Viral Diarrhea Virus (BVDV) is an important pathogen that plays a significant role in initiating Bovine Respiratory Disease Complex (BRDC) in cattle. The disease causes multi-billion dollar losses globally due to high calf mortality and increased morbidity leading to heavy use of antibiotics. Current commercial vaccines provide limited cross-protection with several drawbacks such as safety, immunosuppression, potential reversion to virulence, and induction of neonatal pancytopenia. This study evaluates two prototype vaccines containing multiple rationally designed recombinant mosaic BVDV antigens for their potential to confer cross-protection against diverse BVDV strains. Genes encoding three novel mosaic antigens, designated E2123, NS2-31, and NS2-32, were designed in silico and expressed in mammalian cells for the formulation of a prototype protein-based vaccine. The mosaic antigens contain highly conserved protective epitopes from BVDV-1a, -1b, and -2, and included unique neutralizing epitopes from disparate strains to broaden coverage. We tested immunogenicity and protective efficacy of Expi293TM-expressed mosaic antigens (293F-E2123, 293F-NS2-31, and 293F-NS2-32), and baculovirus-expressed E2123 (Bac-E2123) mosaic antigen in calves. The Expi293TM-expressed antigen cocktail induced robust BVDV-specific cross-reactive IFN-γ responses, broadly neutralizing antibodies, and following challenge with a BVDV-1b strain, the calves had significantly (p < 0.05) reduced viremia and clinical BVD disease compared to the calves vaccinated with a commercial killed vaccine. The Bac-E2123 antigen was not as effective as the Expi293TM-expressed antigen cocktail, but it protected calves from BVD disease better than the commercial killed vaccine. The findings support feasibility for development of a broadly protective subunit BVDV vaccine for safe and effective management of BRD.
Collapse
Affiliation(s)
- Neha Sangewar
- Department of Diagnostic Medicine/Pathobiology, Kansas State University, Manhattan, KS, United States
| | - Wisam Hassan
- Department of Veterinary Pathobiology, Texas A&M University, College Station, TX, United States
| | - Shehnaz Lokhandwala
- Department of Diagnostic Medicine/Pathobiology, Kansas State University, Manhattan, KS, United States
| | - Jocelyn Bray
- Department of Veterinary Pathobiology, Texas A&M University, College Station, TX, United States
| | - Rachel Reith
- Department of Diagnostic Medicine/Pathobiology, Kansas State University, Manhattan, KS, United States
| | - Mary Markland
- Department of Diagnostic Medicine/Pathobiology, Kansas State University, Manhattan, KS, United States
| | - Huldah Sang
- Department of Diagnostic Medicine/Pathobiology, Kansas State University, Manhattan, KS, United States
| | - Jianxiu Yao
- Department of Diagnostic Medicine/Pathobiology, Kansas State University, Manhattan, KS, United States
| | - Bailey Fritz
- Department of Diagnostic Medicine/Pathobiology, Kansas State University, Manhattan, KS, United States
| | - Suryakant D Waghela
- Department of Veterinary Pathobiology, Texas A&M University, College Station, TX, United States
| | - Karim W Abdelsalam
- Department of Veterinary and Biomedical Sciences, South Dakota State University, Brookings, SD, United States
| | - Christopher C L Chase
- Department of Veterinary and Biomedical Sciences, South Dakota State University, Brookings, SD, United States
| | - Waithaka Mwangi
- Department of Diagnostic Medicine/Pathobiology, Kansas State University, Manhattan, KS, United States
| |
Collapse
|
7
|
Walz PH, Chamorro MF, M Falkenberg S, Passler T, van der Meer F, R Woolums A. Bovine viral diarrhea virus: An updated American College of Veterinary Internal Medicine consensus statement with focus on virus biology, hosts, immunosuppression, and vaccination. J Vet Intern Med 2020; 34:1690-1706. [PMID: 32633084 PMCID: PMC7517858 DOI: 10.1111/jvim.15816] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 05/11/2020] [Accepted: 05/11/2020] [Indexed: 12/01/2022] Open
Abstract
Control of bovine viral diarrhea virus (BVDV) in cattle populations across most of the world has remained elusive in spite of advances in knowledge about this viral pathogen. A central feature of virus perseverance in cattle herds is the unique mechanism of persistent infection. Managing BVDV infection in herds involves controlling persistently infected carrier animals using a multidimensional approach of vaccination, biosecurity, and identification of BVDV reservoirs. A decade has passed since the original American College of Veterinary Internal Medicine consensus statement on BVDV. While much has remained the same with respect to clinical signs of disease, pathogenesis of infection including persistent infection, and diagnosis, scientific articles published since 2010 have led to a greater understanding of difficulties associated with control of BVDV. This consensus statement update on BVDV presents greater focus on topics currently relevant to the biology and control of this viral pathogen of cattle, including changes in virus subpopulations, infection in heterologous hosts, immunosuppression, and vaccination.
Collapse
Affiliation(s)
- Paul H Walz
- College of Veterinary Medicine, Auburn University, Auburn, Alabama, USA
| | - Manuel F Chamorro
- College of Veterinary Medicine, Auburn University, Auburn, Alabama, USA
| | - Shollie M Falkenberg
- USDA Agricultural Research Service, National Animal Disease Center, Ames, Iowa, USA
| | - Thomas Passler
- College of Veterinary Medicine, Auburn University, Auburn, Alabama, USA
| | - Frank van der Meer
- Faculty of Veterinary Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Amelia R Woolums
- College of Veterinary Medicine, Mississippi State University, Starkville, Mississippi, USA
| |
Collapse
|
8
|
Chamorro MF, Palomares RA. Bovine Respiratory Disease Vaccination Against Viral Pathogens: Modified-Live Versus Inactivated Antigen Vaccines, Intranasal Versus Parenteral, What Is the Evidence? Vet Clin North Am Food Anim Pract 2020; 36:461-472. [PMID: 32451035 PMCID: PMC7244452 DOI: 10.1016/j.cvfa.2020.03.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Vaccination of cattle against viral respiratory pathogens to minimize losses associated with bovine respiratory disease (BRD) is a common practice among producers and veterinarians. Three different calf populations in which BRD is most prevalent (recently weaned beef calves, preweaning beef calves, and young dairy calves) are the principal focus of morbidity and mortality prevention through vaccination; however, the evidence of vaccination efficacy is inconsistent in the literature. This review addresses the evidence of efficacy of vaccination in the prevention or reduction of naturally occurring and experimentally induced BRD in each calf group.
Collapse
Affiliation(s)
- Manuel F Chamorro
- Department of Clinical Sciences, College of Veterinary Medicine, Auburn University, Large Animal Teaching Hospital, 2020 J.T. Vaughn, Auburn, AL 36849, USA.
| | - Roberto A Palomares
- Department of Population Medicine, College of Veterinary Medicine, University of Georgia, 501 D.W. Brooks Drive, Athens, GA 30602, USA
| |
Collapse
|
9
|
Fulton RW, Cook BJ, Payton ME, Burge LJ, Step D. Immune response to bovine viral diarrhea virus (BVDV) vaccines detecting antibodies to BVDV subtypes 1a, 1b, 2a, and 2c. Vaccine 2020; 38:4032-4037. [DOI: 10.1016/j.vaccine.2020.03.058] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 03/27/2020] [Accepted: 03/29/2020] [Indexed: 10/24/2022]
|
10
|
Rajput MKS, Darweesh MF, Braun LJ, Mansour SMG, Chase CCL. Comparative humoral immune response against cytopathic or non-cytopathic bovine viral diarrhea virus infection. Res Vet Sci 2020; 129:109-116. [PMID: 31954315 DOI: 10.1016/j.rvsc.2020.01.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 01/08/2020] [Accepted: 01/10/2020] [Indexed: 11/29/2022]
Abstract
Bovine viral diarrhea virus (BVDV) infection causes immune dysfunction. The current study investigated the effect of cytopathic (cp) or noncytopathic (ncp) strains of BVDV on immunomodulation by the levels of total serum immunoglobulin G (IgG), the IgG1, IgG2, BVDV neutralizing antibodies and total white blood cell (WBC) count. Twenty (20) BVDV seronegative dairy calves (5-6 months old) were divided in two groups of ten. The animals were infected with either a cp or ncp virus isolated from the same animal (ncp BVDV1b-TGAN or cp BVDV1b-TGAC). One group of 10 was infected with ncp TGAN while the other group of 10 was infected with cp TGAC. Calves infected with cp BVDV had a significant decrease in total IgG as well as IgG1 concentration at 7 days post infection (DPI) that recovered by 21 DPI (total IgG) and 35 DPI (IgG1), respectively. There was no effect of ncp BVDV infection on total IgG concentration in the first 7 days of infection (DOI); however, IgG1 concentration was significantly reduced and IgG2 concentration was significantly increased at 7 DOI. At 35 DPI, ncp TGAN-infected calves had significantly higher total IgG, IgG1 as well as IgG2 compared to cp TGAC-infected calves. Ncp BVDV induced higher BVDV homologous and heterologous neutralizing antibodies compared to the cp BVDV strain. Calves infected with ncp BVDV had significantly reduced WBC counts at 7 DPI that recovered by 14 DPI. Overall, these findings indicate that humoral immunosuppression occurs early following BVDV infection with the largest effect on IgG1 levels.
Collapse
Affiliation(s)
- Mrigendra K S Rajput
- Department of Veterinary and Biomedical Sciences, SDSU, Brookings, SD 57007, USA; Department of Biological Sciences, Arkansas Tech University, AR, USA
| | - Mahmoud F Darweesh
- Department of Veterinary and Biomedical Sciences, SDSU, Brookings, SD 57007, USA; Faculty of Pharmacy, Al-Azhar University, Assuit, Egypt
| | - Lyle J Braun
- Department of Veterinary and Biomedical Sciences, SDSU, Brookings, SD 57007, USA; Medgene labs LLC, Brookings, SD, USA
| | - Shimaa M G Mansour
- Department of Veterinary and Biomedical Sciences, SDSU, Brookings, SD 57007, USA; Department of Virology, Faculty of veterinary Medicine, Zagazig University, Zagazig, Egypt
| | | |
Collapse
|
11
|
Dendritic Cell Targeting of Bovine Viral Diarrhea Virus E2 Protein Expressed by Lactobacillus casei Effectively Induces Antigen-Specific Immune Responses via Oral Vaccination. Viruses 2019; 11:v11060575. [PMID: 31242608 PMCID: PMC6630502 DOI: 10.3390/v11060575] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 06/21/2019] [Accepted: 06/24/2019] [Indexed: 01/01/2023] Open
Abstract
Bovine viral diarrhea caused by bovine viral diarrhea virus (BVDV) is an important disease in cattle, resulting in significant economic losses to the cattle industry worldwide. In order to develop an effective vaccine against BVDV infection, we constructed a dendritic cell (DC)-targeting oral probiotic vaccine (pPG-E2-DCpep/LC W56) using Lactobacillus casei as antigen delivery carrier to express BVDV glycoprotein E2 fused with DC-targeting peptide, and the immunogenicity of orally administered probiotic vaccine was evaluated in mice model. Our results showed that after immunization with the probiotic vaccine, significantly levels of antigen-specific sera IgG and mucosal sIgA antibodies (p < 0.05) with BVDV-neutralizing activity were induced in vivo. Challenge experiment showed that pPG-E2-DCpep/LC W56 can provide effective immune protection against BVDV, and BVDV could be effectively cleared from the intestine of immunized mice post-challenge. Moreover, the pPG-E2-DCpep/LC W56 could efficiently activate DCs in the intestinal Peyer’s patches, and significantly levels of lymphoproliferative responses, Th1-associated IFN-γ, and Th2-associated IL-4 were observed in mice immunized with pPG-E2-DCpep/LC W56 (p < 0.01). Our results clearly demonstrate that the probiotic vaccine could efficiently induce anti-BVDV mucosal, humoral, and cellular immune responses via oral immunization, indicating a promising strategy for the development of oral vaccine against BVDV.
Collapse
|
12
|
Alpay G, Toker EB, Yeşilbağ K. Persistent BVD virus infections in offspring from imported heifers. Trop Anim Health Prod 2018; 51:297-302. [DOI: 10.1007/s11250-018-1685-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Accepted: 08/06/2018] [Indexed: 10/28/2022]
|
13
|
Chernick A, van der Meer F. Evolution of Bovine viral diarrhea virus in Canada from 1997 to 2013. Virology 2017; 509:232-238. [PMID: 28668732 DOI: 10.1016/j.virol.2017.06.024] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2017] [Revised: 06/20/2017] [Accepted: 06/21/2017] [Indexed: 10/19/2022]
Abstract
Bovine viral diarrhea virus (BVDV) is a rapidly evolving, single-stranded RNA virus and a production limiting pathogen of cattle worldwide. 79 viral isolates collected between 1997 and 2013 in Canada were subjected to next-generation sequencing. Bayesian phylogenetics was used to assess the evolution of this virus. A mean substitution rate of 1.4×10-3 substitutions/site/year was found across both BVDV1 and BVDV2. Evolutionary rates in the E2 gene were slightly faster than other regions. We also identified population structures below the sub-genotype level that likely have phenotypic implications. Two distinct clusters within BVDV2a are present and can be differentiated, in part, by a tyrosine to isoleucine mutation at position 963 in the E2 protein, a position implicated in the antigenicity of BVDV1 isolates. Distinct clustering within all sub-genotypes, particularly BVDV2a, is apparent and could lead to new levels of genotypic classification. Continuous monitoring of emerging variants is therefore necessary.
Collapse
Affiliation(s)
- Adam Chernick
- Ecosystem and Public Health, Faculty of Veterinary Medicine, University of Calgary, 3330 Hospital Dr NW, Calgary, AB T2N 1N4, Canada.
| | - Frank van der Meer
- Ecosystem and Public Health, Faculty of Veterinary Medicine, University of Calgary, 3330 Hospital Dr NW, Calgary, AB T2N 1N4, Canada.
| |
Collapse
|
14
|
Vaccination of cattle against bovine viral diarrhea virus. Vet Microbiol 2017; 206:78-83. [PMID: 28400145 DOI: 10.1016/j.vetmic.2017.04.003] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Revised: 04/04/2017] [Accepted: 04/05/2017] [Indexed: 11/23/2022]
Abstract
Bovine viral diarrhea virus (BVDV) is responsible for significant losses to the cattle industry. Currently, modified-live viral (MLV) and inactivated viral vaccines are available against BVDV, often in combination with other viral and bacterial antigens. Inactivated and MLV vaccines provide cattle producers and veterinarians safe and efficacious options for herd immunization to limit disease associated with BVDV infection. Vaccination of young cattle against BVDV is motivated by prevention of clinical disease and limiting viral spread to susceptible animals. For reproductive-age cattle, vaccination to prevent viremia and birth of persistently infected offspring is considered more important, while also more difficult to achieve than prevention of clinical disease. Recent advances have been made in the understanding of BVDV vaccine efficacy. In terms of preventing clinical disease, current BVDV vaccines have been demonstrated to have a rapid onset of immunity and MLV vaccines can be effectively utilized in calves possessing maternal immunity. For reproductive protection, more recent studies using multivalent MLV vaccines have demonstrated consistent fetal protection rates in the range of 85-100% in experimental studies. Proper timing and administration of BVDV vaccines can be utilized to maximize vaccine efficacy to provide an important contribution to reducing risks associated with BVDV infection. With improvements in vaccine formulations and increased understanding of the protective immune response following vaccination, control of BVDV through vaccination can be enhanced.
Collapse
|
15
|
Newcomer BW, Givens D. Diagnosis and Control of Viral Diseases of Reproductive Importance: Infectious Bovine Rhinotracheitis and Bovine Viral Diarrhea. Vet Clin North Am Food Anim Pract 2016; 32:425-41. [PMID: 27140298 DOI: 10.1016/j.cvfa.2016.01.011] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Abstract
Both bovine viral diarrhea virus and bovine herpesvirus 1 can have significant negative reproductive impacts on cattle health. Vaccination is the primary control method for the viral pathogens in US cattle herds. Polyvalent, modified-live vaccines are recommended to provide optimal protection against various viral field strains. Of particular importance to bovine viral diarrhea control is the limitation of contact of pregnant cattle with potential viral reservoirs during the critical first 125 days of gestation.
Collapse
Affiliation(s)
- Benjamin W Newcomer
- Department of Pathobiology, College of Veterinary Medicine, Auburn University, 127 Sugg Laboratory, Auburn, AL 36849-5516, USA
| | - Daniel Givens
- Office of Academic Affairs, College of Veterinary Medicine, Auburn University, 217 Veterinary Education Center, Auburn, AL 36849-5536, USA.
| |
Collapse
|
16
|
Abstract
The control and prevention of bovine viral diarrhea virus (BVDV) infections has provided substantial challenges. Viral genetic variation, persistent infections, and viral tropism for immune cells have complicated disease control strategies. Vaccination has, however, provided an effective tool to prevent acute systemic infections and increase reproductive efficiency through fetal protection. There has been substantial controversy about the safety and efficacy of BVDV vaccines, especially when comparing killed versus modified-live viral (MLV) vaccines. Furthermore, numerous vaccination protocols have been proposed to protect the fetus and ensure maternal antibody transfer to the calf. These issues have been further complicated by reports of immune suppression during natural infections and following vaccination. While killed BVDV vaccines provide the greatest safety, their limited immunogenicity makes multiple vaccinations necessary. In contrast, MLV BVDV vaccines induce a broader range of immune responses with a longer duration of immunity, but require strategic vaccination to minimize potential risks. Vaccination strategies for breeding females and young calves, in the face of maternal antibody, are discussed. With intranasal vaccination of young calves it is possible to avoid maternal antibody interference and induce immune memory that persists for 6-8 months. Thus, with an integrated vaccination protocol for both breeding cows and calves it is possible to maximize disease protection while minimizing vaccine risks.
Collapse
|
17
|
Purtle L, Mattick D, Schneider C, Smith L, Xue W, Trigo E. One year duration of immunity of the modified live bovine viral diarrhea virus type 1 and type 2 and bovine herpesvirus-1 fractions of Vista® Once SQ vaccine. Vaccine 2016; 34:1582-1588. [PMID: 26859238 DOI: 10.1016/j.vaccine.2016.02.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2015] [Revised: 01/27/2016] [Accepted: 02/01/2016] [Indexed: 11/27/2022]
Abstract
Three studies were performed to determine the duration of immunity of the bovine viral diarrhea virus type 1 and type 2 (BVDV-1 and BVDV-2) and bovine herpesvirus-1 (BHV-1) fractions of a commercially prepared modified-live vaccine. Vista® Once SQ (Vista®) vaccine contains five modified-live viruses, BVDV-1, BVDV-2, BHV-1, bovine respiratory syncytial virus, and bovine parainfluenza 3 virus, and two modified-live bacteria, Pasteurella multocida and Mannheimia haemolytica. For all three studies, calves were administered a single dose of vaccine or placebo vaccine subcutaneously, and were challenged with one of the three virulent viruses at least one year following vaccination. Calves were evaluated daily following challenge for clinical signs of disease associated with viral infection, nasal swab samples were evaluated for virus shedding, and serum was tested for neutralizing antibodies. Following the BVDV-1 and BVDV-2 challenges, whole blood was evaluated for white blood cell counts, and for the BVDV-2 study, whole blood was also evaluated for platelet counts. Calves vaccinated with BVDV type 1a, were protected from challenge with BVDV type 1b, and had significant reductions in clinical disease, fever, leukopenia, and virus shedding compared to control calves. Vaccinated calves in the BVDV-2 study were protected from clinical disease, mortality, fever, leukopenia, thrombocytopenia, and virus shedding compared to controls. Vaccinated calves in the BHV-1 study were protected from clinical disease and fever, and had significantly reduced duration of nasal virus shedding. These three studies demonstrated that a single administration of the Vista® vaccine to healthy calves induces protective immunity against BVDV-1, BVDV-2 and BHV-1 that lasts at least one year following vaccination.
Collapse
Affiliation(s)
- Lisa Purtle
- Merck Animal Health, 35500 W. 151st St., De Soto, KS 66062, USA.
| | - Debra Mattick
- Merck Animal Health, 35500 W. 151st St., De Soto, KS 66062, USA
| | - Corey Schneider
- Merck Animal Health, 35500 W. 151st St., De Soto, KS 66062, USA
| | - Linda Smith
- Merck Animal Health, 35500 W. 151st St., De Soto, KS 66062, USA
| | - Wenzhi Xue
- Merck Animal Health, 35500 W. 151st St., De Soto, KS 66062, USA
| | - Emilio Trigo
- Merck Animal Health, 35500 W. 151st St., De Soto, KS 66062, USA
| |
Collapse
|
18
|
Impact of species and subgenotypes of bovine viral diarrhea virus on control by vaccination. Anim Health Res Rev 2015; 16:40-54. [DOI: 10.1017/s1466252315000079] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
AbstractBovine viral diarrhea viruses (BVDV) are diverse genetically and antigenically. This diversity impacts both diagnostic testing and vaccination. In North America, there are two BVDV species, 1 and 2 with 3 subgentoypes, BVDV1a, BVDV1b and BVDV2a. Initially, US vaccines contained BVDV1a cytopathic strains. With the reporting of BVDV2 severe disease in Canada and the USA there was focus on protection by BVDV1a vaccines on BVDV2 disease. There was also emphasis of controlling persistently infected (PI) cattle resulted in studies for fetal protection afforded by BVDV1a vaccines. Initially, studies indicated that some BVDV1a vaccines gave less than 100% protection against BVDV2 challenge for fetal infection. Eventually vaccines in North America added BVDV2a to modified live virus (MLV) and killed BVDV1a vaccines. Ideally, vaccines should stimulate complete immunity providing 100% protection against disease, viremias, shedding, and 100% fetal protection in vaccinates when challenged with a range of diverse antigenic viruses (subgenotypes). There should be a long duration of immunity stimulated by vaccines, especially for fetal protection. MLV vaccines should be safe when given according to the label and free of other pathogens. While vaccines have now included BVDV1a and BVDV2a, with the discovery of the predominate subgenotype of BVDV in the USA to be BVDV1b, approximately 75% or greater in prevalence, protection in acute challenge and fetal protection studies became more apparent for BVDV1b. Thus many published studies examined protection by BVDV1a and BVDV2a vaccines against BVDV1b in acute challenge and fetal protection studies. There are no current BVDV1b vaccines in the USA. There are now more regulations on BVDV reproductive effects by the USDA Center for Veterinary Biologics (CVB) regarding label claims for protection against abortion, PI calves, and fetal infections, including expectations for studies regarding those claims. Also, the USDA CVB has a memorandum providing the guidance for exemption of the warning label statement against the use of the MLV BVDV in pregnant cows and calves nursing pregnant cows. In reviews of published studies in the USA, the results of acute challenge and fetal protection studies are described, including subgenotypes in vaccines and challenge strains and the results in vaccinates and the vaccinates' fetuses/newborns. In general, vaccines provide protection against heterologous strains, ranging from 100% to partial but statistically significant protection. In recent studies, the duration of immunity afforded by vaccines was investigated and reported. Issues of contamination remain, especially since fetal bovine serums may be contaminated with noncytopathic BVDV. In addition, the potential for immunosuppression by MLV vaccines exists, and new vaccines will be assessed in the future to prove those MLV components are not immunosuppressive by experimental studies. As new subgenotypes are found, the efficacy of the current vaccines should be evaluated for these new strains.
Collapse
|
19
|
Abstract
Porcine circoviruses (PCVs) belong to the genus Circovirus and the family Circoviridae, and they are the smallest known viruses that replicate autonomously in mammalian cells. They are nonenveloped, and they have characteristic single-stranded, negative-sense, circular DNA. Two types of divergent PCVs are recognized: PCV1 and PCV2. About 20 years ago, PCV2 began to emerge as a major pathogen of swine around the world, leading to burgeoning knowledge about the virus and porcine circovirus-associated diseases. However, much of the history of its discovery, including the controversy related to its importance, is not recorded. This review examines current issues related to the biology of PCV2 in the context of the original studies related to determining its causal association with disease and to the evolving understanding of the complex pathogenesis of PCV2 infections.
Collapse
Affiliation(s)
- J Ellis
- Department of Veterinary Microbiology, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, SK, S7N 5B4, Canada.
| |
Collapse
|
20
|
Gao Y, Zhao X, Sun C, Zang P, Yang H, Li R, Zhang L. A transgenic ginseng vaccine for bovine viral diarrhea. Virol J 2015; 12:73. [PMID: 25948546 PMCID: PMC4455706 DOI: 10.1186/s12985-015-0301-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2014] [Accepted: 04/21/2015] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Bovine viral diarrhea virus (BVDV) infections are endemic in cattle populations worldwide and cause major economic losses. Thus, an effective vaccine is needed against the transmission of BVDV. The glycoprotein E(rns) is one of the envelope proteins of this virus and shows BVDV-related immunogenicity. Here, we report the use of Panax ginseng as an alternative production platform for the expression of glycoprotein E(rns) via Agrobacterium-mediated transformation. RESULT Polymerase chain reaction (PCR) and reverse transcription (RT)-PCR analyses showed that pBI121-E(rns) was stably integrated into the chromosome of transformants. ELISA assay and Western blot analysis confirmed the antigenicity of plant-derived E(rns) glycoprotein. Immunogenicity was evaluated subcutaneously in deer using a soluble protein extract of dried transgenic ginseng hairy roots. Specific humoral and cell-mediated immune responses against BVDV were detected following immunization. CONCLUSION These results demonstrated that the E(rns) glycoprotein could be expressed in ginseng hairy roots and that plant-derived glycoprotein E(rns) retained its antigenicity and immunogenicity.
Collapse
Affiliation(s)
- Yugang Gao
- College of Traditional Chinese Medicine, Jilin Agricultural University, ChangChun, 130118, China.
| | - Xueliang Zhao
- College of Traditional Chinese Medicine, Jilin Agricultural University, ChangChun, 130118, China.
| | - Chao Sun
- College of AnimCal Science and Technology, Northwest A & F University, Yang Ling, 712100, China.
| | - Pu Zang
- College of Traditional Chinese Medicine, Jilin Agricultural University, ChangChun, 130118, China.
| | - He Yang
- College of Traditional Chinese Medicine, Jilin Agricultural University, ChangChun, 130118, China.
| | - Ran Li
- College of Traditional Chinese Medicine, Jilin Agricultural University, ChangChun, 130118, China.
| | - Lianxue Zhang
- College of Traditional Chinese Medicine, Jilin Agricultural University, ChangChun, 130118, China.
| |
Collapse
|
21
|
Grissett GP, White BJ, Larson RL. Structured literature review of responses of cattle to viral and bacterial pathogens causing bovine respiratory disease complex. J Vet Intern Med 2015; 29:770-80. [PMID: 25929158 PMCID: PMC4895424 DOI: 10.1111/jvim.12597] [Citation(s) in RCA: 95] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2014] [Revised: 01/14/2015] [Accepted: 03/23/2015] [Indexed: 12/01/2022] Open
Abstract
Bovine respiratory disease (BRD) is an economically important disease of cattle and continues to be an intensely studied topic. However, literature summarizing the time between pathogen exposure and clinical signs, shedding, and seroconversion is minimal. A structured literature review of the published literature was performed to determine cattle responses (time from pathogen exposure to clinical signs, shedding, and seroconversion) in challenge models using common BRD viral and bacterial pathogens. After review a descriptive analysis of published studies using common BRD pathogen challenge studies was performed. Inclusion criteria were single pathogen challenge studies with no treatment or vaccination evaluating outcomes of interest: clinical signs, shedding, and seroconversion. Pathogens of interest included: bovine viral diarrhea virus (BVDV), bovine herpesvirus type 1 (BHV‐1), parainfluenza‐3 virus, bovine respiratory syncytial virus, Mannheimia haemolytica, Mycoplasma bovis, Pastuerella multocida, and Histophilus somni. Thirty‐five studies and 64 trials were included for analysis. The median days to the resolution of clinical signs after BVDV challenge was 15 and shedding was not detected on day 12 postchallenge. Resolution of BHV‐1 shedding resolved on day 12 and clinical signs on day 12 postchallenge. Bovine respiratory syncytial virus ceased shedding on day 9 and median time to resolution of clinical signs was on day 12 postchallenge. M. haemolytica resolved clinical signs 8 days postchallenge. This literature review and descriptive analysis can serve as a resource to assist in designing challenge model studies and potentially aid in estimation of duration of clinical disease and shedding after natural pathogen exposure.
Collapse
Affiliation(s)
- G P Grissett
- Department of Clinical Sciences, College of Veterinary Medicine, Kansas State University, Manhattan, KS
| | - B J White
- Department of Clinical Sciences, College of Veterinary Medicine, Kansas State University, Manhattan, KS
| | - R L Larson
- Department of Clinical Sciences, College of Veterinary Medicine, Kansas State University, Manhattan, KS
| |
Collapse
|
22
|
Comparison of conventional RT-PCR, reverse-transcription loop-mediated isothermal amplification, and SYBR green I-based real-time RT-PCR in the rapid detection of bovine viral diarrhea virus nucleotide in contaminated commercial bovine sera batches. J Virol Methods 2014; 207:204-9. [DOI: 10.1016/j.jviromet.2014.05.020] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2014] [Revised: 05/04/2014] [Accepted: 05/06/2014] [Indexed: 12/22/2022]
|
23
|
Generation of the bovine viral diarrhea virus e0 protein in transgenic astragalus and its immunogenicity in sika deer. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2014; 2014:372503. [PMID: 24963321 PMCID: PMC4054918 DOI: 10.1155/2014/372503] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/24/2014] [Revised: 04/29/2014] [Accepted: 05/06/2014] [Indexed: 11/21/2022]
Abstract
The bovine viral diarrhea virus (BVDV), a single-stranded RNA virus, can cause fatal diarrhea syndrome, respiratory problems, and reproductive disorders in herds. Over the past few years, it has become clear that the BVDV infection rates are increasing and it is likely that an effective vaccine for BVDV will be needed. In this study, transgenic Astragalus was used as an alternative productive platform for the expression of glycoprotein E0. The immunogenicity of glycoprotein E0 expressed in transgenic Astragalus was detected in deer. The presence of pBI121-E0 was confirmed by polymerase chain reaction (PCR), transcription was verified by reverse transcription- (RT-) PCR, and recombinant protein expression was confirmed by ELISA and Western blot analyses. Deer that were immunized subcutaneously with the transgenic plant vaccine developed specific humoral and cell-mediated immune responses against BVDV. This study provides a new method for a protein with weak immunogenicity to be used as part of a transgenic plant vaccine.
Collapse
|
24
|
Wang W, Shi X, Wu Y, Li X, Ji Y, Meng Q, Zhang S, Wu H. Immunogenicity of an inactivated Chinese bovine viral diarrhea virus 1a (BVDV 1a) vaccine cross protects from BVDV 1b infection in young calves. Vet Immunol Immunopathol 2014; 160:288-92. [PMID: 24880701 DOI: 10.1016/j.vetimm.2014.04.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2014] [Revised: 04/01/2014] [Accepted: 04/22/2014] [Indexed: 10/25/2022]
Abstract
Bovine viral diarrhea virus (BVDV) 1a and 1b strains are the predominant subgenotypes in China. Because of the genetic and antigenic variability among different BVDV strains, a vaccine effective in one region may fail to protect against infections caused by different virus strains in another region. No BVDV vaccine developed with the predominant strains in China are available. In this study, the immunogenicity of an inactivated Chinese BVDV 1a NM01 vaccine strain was evaluated by challenging with a Chinese BVDV 1b JL strain. Ten 2-4-month-old calves were intramuscularly vaccinated with a single dose of the vaccine strain and boosted with same dose three weeks after the first vaccination, with five mock immunized calves serving as a control group. The average titer of neutralization antibody to BVDV 1a and BVDV 1b of immunized calves reached 1:410 and 1:96, respectively, at 21 days post the second vaccination. Twenty-one days post the second vaccination, all calves were challenged with strain JL. The clinical signs, such as the temperature and leukopenia of the immunized calves and viral shedding, were significantly less than the mock immunized calves after challenging with the virulent BVDV 1b strain, indicating that the BVDV 1a vaccine strain elicited efficacious protection against the endemic BVDV 1b strain in China. To the best of our knowledge, this is the first report of an inactivated BVDV vaccine which demonstrated effective cross-protection against BVDV type 1b infection in China.
Collapse
Affiliation(s)
- Wei Wang
- Institute of Special Economic Animal and Plant Science, CAAS, No. 4899, Juye Street, Changchun 130122, China; Sinovet (Beijing) Biotechnology Co., Ltd., No. 5 Kaituo Street, Haidian District, Beijing 100085, China
| | - Xinchuan Shi
- Sinovet (Beijing) Biotechnology Co., Ltd., No. 5 Kaituo Street, Haidian District, Beijing 100085, China
| | - Yongwang Wu
- Sinovet (Beijing) Biotechnology Co., Ltd., No. 5 Kaituo Street, Haidian District, Beijing 100085, China
| | - Xiaoxin Li
- VMRD, APAC, Zoetis, Unit 1400, 14th Floor, Sunflower Tower, No. 37 Maizidian Street, Chaoyang District, Beijing 100125, China
| | - Ye Ji
- Sinovet (Beijing) Biotechnology Co., Ltd., No. 5 Kaituo Street, Haidian District, Beijing 100085, China
| | - Qingsen Meng
- Sinovet (Beijing) Biotechnology Co., Ltd., No. 5 Kaituo Street, Haidian District, Beijing 100085, China
| | - Shucheng Zhang
- VMRD, APAC, Zoetis, Unit 1400, 14th Floor, Sunflower Tower, No. 37 Maizidian Street, Chaoyang District, Beijing 100125, China
| | - Hua Wu
- Sinovet (Beijing) Biotechnology Co., Ltd., No. 5 Kaituo Street, Haidian District, Beijing 100085, China.
| |
Collapse
|
25
|
Newcomer BW, Givens MD. Approved and experimental countermeasures against pestiviral diseases: Bovine viral diarrhea, classical swine fever and border disease. Antiviral Res 2013; 100:133-50. [DOI: 10.1016/j.antiviral.2013.07.015] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2013] [Revised: 07/01/2013] [Accepted: 07/27/2013] [Indexed: 01/13/2023]
|
26
|
Bovine viral diarrhea virus fetal persistent infection after immunization with a contaminated modified-live virus vaccine. Theriogenology 2013; 79:1184-95. [DOI: 10.1016/j.theriogenology.2013.02.017] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2012] [Revised: 02/16/2013] [Accepted: 02/17/2013] [Indexed: 11/20/2022]
|
27
|
Nelson G, Marconi P, Periolo O, La Torre J, Alvarez MA. Immunocompetent truncated E2 glycoprotein of bovine viral diarrhea virus (BVDV) expressed in Nicotiana tabacum plants: a candidate antigen for new generation of veterinary vaccines. Vaccine 2012; 30:4499-504. [PMID: 22554468 DOI: 10.1016/j.vaccine.2012.04.068] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2011] [Revised: 04/16/2012] [Accepted: 04/21/2012] [Indexed: 10/28/2022]
Abstract
The bovine viral diarrhea virus (BVDV) is the etiological agent responsible for a wide spectrum of clinical diseases in cattle. The glycoprotein E2 is the major envelope protein of this virus and the strongest inductor of the immune response. There are several available commercial vaccines against bovine viral diarrhea (BVD), which show irregular performances. Here, we report the use of tobacco plants as an alternative productive platform for the expression of the truncated version of E2 glycoprotein (tE2) from the BVDV. The tE2 sequence, lacking the transmembrane domain, was cloned into the pK7WG2 Agrobacterium binary vector. The construct also carried the 2S2 Arabidopsis thaliana signal for directing the protein into the plant secretory pathway, the Kozak sequence, an hexa-histidine tag to facilitate protein purification and the KDEL endoplasmic reticulum retention signal. The resulting plasmid (pK-2S2-tE2-His-KDEL) was introduced into Agrobacterium tumefaciens strain EHA101 by electroporation. The transformed A. tumefaciens was then used to express tE2 in leaves of Nicotiana tabacum plants. Western blot and ELISA using specific monoclonal antibodies confirmed the presence of the recombinant tE2 protein in plant extracts. An estimated amount of 20 μg of tE2 per gram of fresh leaves was regularly obtained with this plant system. Injection of guinea pigs with plant extracts containing 20 μg of rtE2 induced the production of BVDV specific antibodies at equal or higher levels than those induced by whole virus vaccines. This is the first report of the production of an immunocompetent tE2 in N. tabacum plants, having the advantage to be free of any eventual animal contaminant.
Collapse
Affiliation(s)
- Guillermo Nelson
- Instituto de Ciencia y Tecnología Dr. César Milstein, CONICET - Fundación Pablo Cassará, Saladillo 2468, Ciudad de Buenos Aires, C11440FFX, Argentina
| | | | | | | | | |
Collapse
|
28
|
Xue W, Mattick D, Smith L. Protection from persistent infection with a bovine viral diarrhea virus (BVDV) type 1b strain by a modified-live vaccine containing BVDV types 1a and 2, infectious bovine rhinotracheitis virus, parainfluenza 3 virus and bovine respiratory syncytial virus. Vaccine 2011; 29:4657-62. [PMID: 21596076 DOI: 10.1016/j.vaccine.2011.04.129] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2011] [Revised: 04/26/2011] [Accepted: 04/30/2011] [Indexed: 11/24/2022]
Abstract
Recent studies showed that BVDV-1b subgenotype is dominant in North and South American field BVDV isolates. However, nearly all commercially available BVDV-1 vaccines contain BVDV-1a strains. In order to study the efficacy of BVDV-1a vaccine against BVDV-1b infection, this study was designed to evaluate a modified-live vaccine (MLV) containing BVDV-1a and BVDV-2 strains for its efficacy in prevention of persistent infection of fetuses against BVDV-1b strain, when the heifers were vaccinated prior to breeding. Heifers were vaccinated subcutaneously with a single dose of the MLV and bred four weeks after vaccination. The pregnant heifers were challenged with a non-cytopathic BVDV-1b strain at approximately 80 days of gestation. Vaccinated heifers were protected from clinical disease and viremia caused by the BVDV-1b virus. At approximately 155 days of gestation, the fetuses were harvested and tissue samples of thymus, lungs, spleen, kidney and intestines were collected for virus isolation. BVDV was isolated from 100% of the fetuses in the non-vaccinated control group, and from only one fetus (4.3%) from the vaccinated group. Results demonstrated that the MLV containing BVDV-1a and BVDV-2 strains provided 96% protection from fetal persistent infection caused by the BVDV-1b strain.
Collapse
Affiliation(s)
- Wenzhi Xue
- Intervet/Schering-Plough Animal Health, 35500W. 91st Street, De Soto, KS 66018, USA.
| | | | | |
Collapse
|