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Uddin MS, Kaldis A, Menassa R, Ortiz Guluarte J, Barreda DR, Guan LL, Alexander TW. Mucosal Immunization with Spore-Based Vaccines against Mannheimia haemolytica Enhances Antigen-Specific Immunity. Vaccines (Basel) 2024; 12:375. [PMID: 38675757 PMCID: PMC11054499 DOI: 10.3390/vaccines12040375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Revised: 03/05/2024] [Accepted: 03/06/2024] [Indexed: 04/28/2024] Open
Abstract
BACKGROUND Mannheimia haemolytica is a bovine respiratory pathogen commonly associated with bacterial bronchopneumonia. Current vaccine strategies have shown variable efficacy in feedlot cattle, and therefore novel vaccines are needed. Bacillus subtilis spores have been investigated as a mucosal vaccine platform, due to their ability to bind and present antigens to the mucosa and act as an adjuvant. The aim of this study was to develop two spore-based mucosal vaccines targeting M. haemolytica and evaluate their immunogenicity in mice. METHODS Two antigen constructs composed of cholera toxin B subunit, M. haemolytica leukotoxin, and either the M. haemolytica outer membrane protein PlpE (MhCP1) or GS60 (MhCP2) were synthesized, purified and then bound to spores as vaccines. In two separate mice trials, the spore-bound vaccines (Spore-MhCP1 and Spore-MhCP2) were administered to mice through intranasal and intragastric routes, while free antigens were administered intranasally and intramuscularly. Unbound spores were also evaluated intranasally. Antigen-specific serum IgG and mucosal IgA from bronchoalveolar lavage, feces, and saliva were measured after vaccination. Mice sera from all treatment groups were assessed for their bactericidal activity against M. haemolytica. RESULTS In both mice experiments, intramuscular immunization induced the strongest serum IgG antibody response. However, the intranasal administration of Spore-MhCP1 and Spore-MhCP2 elicited the greatest secretory IgA-specific response against leukotoxin, PlpE, and GS60 in bronchoalveolar lavage, saliva, and feces (p < 0.05). Compared to the intranasal administration of free antigen, spore-bound antigen groups showed greater bactericidal activity against M. haemolytica (p < 0.05). CONCLUSIONS Since intranasally delivered Spore-MhCP1 and Spore-MhCP2 elicited both systemic and mucosal immune responses in mice, these vaccines may have potential to mitigate lung infection in cattle by restricting M. haemolytica colonization and proliferation in the respiratory tract. The efficacy of these mucosal spore-based vaccines merits further assessment against M. haemolytica in cattle.
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Affiliation(s)
- Muhammed Salah Uddin
- Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, Lethbridge, AB T1J 4B1, Canada; (M.S.U.); (J.O.G.)
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB T6G 2P5, Canada; (D.R.B.); (L.L.G.)
| | - Angelo Kaldis
- London Research and Development Centre, Agriculture and Agri-Food Canada, London, ON N5V 4T3, Canada; (A.K.); (R.M.)
| | - Rima Menassa
- London Research and Development Centre, Agriculture and Agri-Food Canada, London, ON N5V 4T3, Canada; (A.K.); (R.M.)
| | - José Ortiz Guluarte
- Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, Lethbridge, AB T1J 4B1, Canada; (M.S.U.); (J.O.G.)
| | - Daniel R. Barreda
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB T6G 2P5, Canada; (D.R.B.); (L.L.G.)
- Department of Biological Sciences, University of Alberta, Edmonton, AB T6G 2R3, Canada
| | - Le Luo Guan
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB T6G 2P5, Canada; (D.R.B.); (L.L.G.)
- Faculty of Land and Food Systems, University of British Columbia, Vancouver, BC V6T 1Z4, Canada
| | - Trevor W. Alexander
- Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, Lethbridge, AB T1J 4B1, Canada; (M.S.U.); (J.O.G.)
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Yu W, Liu J, Liu Y, Forlenza M, Chen H. Application of CRISPR/Cas9 for Rapid Genome Editing of Pseudorabies Virus and Bovine Herpesvirus-1. Viruses 2024; 16:311. [PMID: 38400086 PMCID: PMC10892916 DOI: 10.3390/v16020311] [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: 01/28/2024] [Revised: 02/14/2024] [Accepted: 02/16/2024] [Indexed: 02/25/2024] Open
Abstract
The CRISPR/Cas9 system is widely used to manipulate viral genomes. Although Alphaherpesvirinae genomes are large and complicated to edit, in recent years several Pseudorabies virus (PRV) mutants have been successfully generated using the CRISPR/Cas9 system. However, the application of CRISPR/Cas9 editing on another member of alpha herpesviruses, bovine herpesvirus-1 (BHV-1), is rarely reported. This paper reports a rapid and straightforward approach to manipulating herpesviruses genome using CRISPR/Cas9. The recombinant plasmids contained the left and right arm of the thymidine kinase (TK) gene of PRV or of the glycoprotein I (gI) and glycoprotein E (gE) of BHV-1. Upon the cleavage of the TK or gIgE gene by Cas9 protein, this was replaced by the enhanced green fluorescence protein (eGFP) by homologous recombination. With this approach, we generated recombinant TK-/eGFP+ PRV and gIgE-/eGFP+ BHV-1 mutants and then proceeded to characterize their biological activities in vitro and in vivo. In conclusion, we showed that alpha herpesvirus, including PRV and BHV-1, can be rapidly edited using the CRISPR/Cas9 approach paving the way to the development of animal herpesvirus vaccines.
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Affiliation(s)
- Wanqi Yu
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China; (W.Y.); (J.L.); (Y.L.)
- Institute of Animal Sciences, Wageningen University and Research, 6708 WD Wageningen, The Netherlands
| | - Jingyi Liu
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China; (W.Y.); (J.L.); (Y.L.)
| | - Yingnan Liu
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China; (W.Y.); (J.L.); (Y.L.)
| | - Maria Forlenza
- Institute of Animal Sciences, Wageningen University and Research, 6708 WD Wageningen, The Netherlands
| | - Hongjun Chen
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China; (W.Y.); (J.L.); (Y.L.)
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3
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Uddin MS, Guluarte JO, Abbott DW, Inglis GD, Guan LL, Alexander TW. Development of a spore-based mucosal vaccine against the bovine respiratory pathogen Mannheimia haemolytica. Sci Rep 2023; 13:12981. [PMID: 37563163 PMCID: PMC10415371 DOI: 10.1038/s41598-023-29732-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Accepted: 02/09/2023] [Indexed: 08/12/2023] Open
Abstract
Bovine respiratory disease (BRD) is a significant health issue in the North American feedlot industry, causing substantial financial losses due to morbidity and mortality. A lack of effective vaccines against BRD pathogens has resulted in antibiotics primarily being used for BRD prevention. The aim of this study was to develop a mucosal vaccine against the BRD pathogen, Mannheimia haemolytica, using Bacillus subtilis spores as an adjuvant. A chimeric protein (MhCP) containing a tandem repeat of neutralizing epitopes from M. haemolytica leukotoxin A (NLKT) and outer membrane protein PlpE was expressed to produce antigen for adsorption to B. subtilis spores. Adsorption was optimized by comparing varying amounts of antigen and spores, as well as different buffer pH and reaction temperatures. Using the optimal adsorption parameters, spore-bound antigen (Spore-MhCP) was prepared and administered to mice via two mucosal routes (intranasal and intragastric), while intramuscular administration of free MhCP and unvaccinated mice were used as positive and negative control treatments, respectively. Intramuscular administration of MhCP elicited the strongest serum IgG response. However, intranasal immunization of Spore-MhCP generated the best secretory IgA-specific response against both PlpE and NLKT in all samples evaluated (bronchoalveolar lavage, saliva, and feces). Since proliferation of M. haemolytica in the respiratory tract is a prerequisite to lung infection, this spore-based vaccine may offer protection in cattle by limiting colonization and subsequent infection, and Spore-MhCP warrants further evaluation in cattle as a mucosal vaccine against M. haemolytica.
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Affiliation(s)
- Muhammed Salah Uddin
- Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, 5403 1st Avenue South, Lethbridge, AB, T1J 4B1, Canada
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB, T6G 2P5, Canada
| | - Jose Ortiz Guluarte
- Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, 5403 1st Avenue South, Lethbridge, AB, T1J 4B1, Canada
| | - D Wade Abbott
- Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, 5403 1st Avenue South, Lethbridge, AB, T1J 4B1, Canada
| | - G Douglas Inglis
- Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, 5403 1st Avenue South, Lethbridge, AB, T1J 4B1, Canada
| | - Le Luo Guan
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB, T6G 2P5, Canada
| | - Trevor W Alexander
- Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, 5403 1st Avenue South, Lethbridge, AB, T1J 4B1, Canada.
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Lemon JL, McMenamy MJ. A Review of UK-Registered and Candidate Vaccines for Bovine Respiratory Disease. Vaccines (Basel) 2021; 9:vaccines9121403. [PMID: 34960149 PMCID: PMC8703677 DOI: 10.3390/vaccines9121403] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 11/10/2021] [Accepted: 11/22/2021] [Indexed: 01/11/2023] Open
Abstract
Vaccination is widely regarded as a cornerstone in animal or herd health and infectious disease management. Nineteen vaccines against the major pathogens implicated in bovine respiratory disease are registered for use in the UK by the Veterinary Medicines Directorate (VMD). However, despite annual prophylactic vaccination, bovine respiratory disease is still conservatively estimated to cost the UK economy approximately £80 million per annum. This review examines the vaccine types available, discusses the surrounding literature and scientific rationale of the limitations and assesses the potential of novel vaccine technologies.
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Affiliation(s)
- Joanne L. Lemon
- Sustainable Agri-Food and Sciences Division, Agri-Food and Bioscience Institute, Newforge Lane, Belfast BT9 5PX, UK
- Correspondence:
| | - Michael J. McMenamy
- Veterinary Sciences Division, Agri-Food and Bioscience Institute, Stormont, Belfast BT4 3SD, UK;
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Bkiri D, Semmate N, Boumart Z, Safini N, Fakri FZ, Bamouh Z, Tadlaoui KO, Fellahi S, Tligui N, Fihri OF, El Harrak M. Biological and molecular characterization of a sheep pathogen isolate of Mannheimia haemolytica and leukotoxin production kinetics. Vet World 2021; 14:2031-2040. [PMID: 34566318 PMCID: PMC8448628 DOI: 10.14202/vetworld.2021.2031-2040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Accepted: 06/25/2021] [Indexed: 11/16/2022] Open
Abstract
Background and Aim Mannheimia haemolytica (Mha) is a common agent of pneumonia in ruminants globally, causing economic losses by morbidity, mortality, and treatment costs. Infection by Mha is often associated with or promoted by respiratory viral pathogens and environmental conditions. Infections due to Mha have rarely been described in small ruminants. This study reports the biological and molecular characteristics of a new Moroccan Mha isolate from small ruminants presenting typical respiratory symptoms. We also studied the cultural parameters, growth kinetics, and Lkt excretion of the isolate and its pathogenicity on laboratory animals and small ruminants. Materials and Methods Suspected pasteurellosis cases in sheep and goat flocks in Morocco were investigated. A local strain of Mha was isolated and identified using biochemical and molecular methods. Polymerase chain reaction-targeting specific genes were used for serotyping and phylogenetic analyses; further, leukotoxin production, cytotoxicity, and pathogenicity of the isolate in mice, goats, and sheep were investigated. Results Phylogeny analysis revealed 98.76% sequence identity with the USA isolate of 2013; the strain growth with a cycle of 9-10 h with leukotoxin secretion was detected by NETosis and quantified by cytotoxicity and mortality of mice. Goat and sheep infections cause hyperthermia, with characteristic postmortem lesions in the trachea and lung. Conclusion A local isolate of Mha from sheep that died of pneumonia was characterized for the 1st time in North Africa using biological and molecular methods. Although growth on appropriate culture media is accompanied by intense leukotoxin secretion, experimental infections of sheep and goats cause hyperthermia and typical lesions of pneumonia.
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Affiliation(s)
- Dounia Bkiri
- Department of Research and Development, Multi-chemical Industry, Mohammedia, Morocco.,Department of Microbiology, Immunology and Contagious Diseases, Institute of Agronomy and Veterinary Medicine Hassan II, Rabat, Morocco
| | - Noha Semmate
- Department of Research and Development, Multi-chemical Industry, Mohammedia, Morocco
| | - Zineb Boumart
- Department of Research and Development, Multi-chemical Industry, Mohammedia, Morocco
| | - Najete Safini
- Department of Research and Development, Multi-chemical Industry, Mohammedia, Morocco
| | - Fatima Zohra Fakri
- Department of Research and Development, Multi-chemical Industry, Mohammedia, Morocco
| | - Zahra Bamouh
- Department of Research and Development, Multi-chemical Industry, Mohammedia, Morocco
| | - Khalid Omari Tadlaoui
- Department of Research and Development, Multi-chemical Industry, Mohammedia, Morocco
| | - Siham Fellahi
- Department of Microbiology, Immunology and Contagious Diseases, Institute of Agronomy and Veterinary Medicine Hassan II, Rabat, Morocco
| | - Noursaid Tligui
- Department of Microbiology, Immunology and Contagious Diseases, Institute of Agronomy and Veterinary Medicine Hassan II, Rabat, Morocco
| | - Ouafaa Fassi Fihri
- Department of Microbiology, Immunology and Contagious Diseases, Institute of Agronomy and Veterinary Medicine Hassan II, Rabat, Morocco
| | - Mehdi El Harrak
- Department of Microbiology, Immunology and Contagious Diseases, Institute of Agronomy and Veterinary Medicine Hassan II, Rabat, Morocco
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Mannheimia haemolytica in bovine respiratory disease: immunogens, potential immunogens, and vaccines. Anim Health Res Rev 2019; 19:79-99. [PMID: 30683173 DOI: 10.1017/s1466252318000142] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Mannheimia haemolytica is the major cause of severe pneumonia in bovine respiratory disease (BRD). Early M. haemolytica bacterins were either ineffective or even enhanced disease in vaccinated cattle, which led to studies of the bacterium's virulence factors and potential immunogens to determine ways to improve vaccines. Studies have focused on the capsule, lipopolysaccharide, various adhesins, extracellular enzymes, outer membrane proteins, and leukotoxin (LKT) resulting in a strong database for understanding immune responses to the bacterium and production of more efficacious vaccines. The importance of immunity to LKT and to surface antigens in stimulating immunity led to studies of individual native or recombinant antigens, bacterial extracts, live-attenuated or mutant organisms, culture supernatants, combined bacterin-toxoids, outer membrane vesicles, and bacterial ghosts. Efficacy of several of these potential vaccines can be shown following experimental M. haemolytica challenge; however, efficacy in field trials is harder to determine due to the complexity of factors and etiologic agents involved in naturally occurring BRD. Studies of potential vaccines have led current commercial vaccines, which are composed primarily of culture supernatant, bacterin-toxoid, or live mutant bacteria. Several of those can be augmented experimentally by addition of recombinant LKT or outer membrane proteins.
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Kamel M, El-Sayed A. Utilization of herpesviridae as recombinant viral vectors in vaccine development against animal pathogens. Virus Res 2019; 270:197648. [PMID: 31279828 DOI: 10.1016/j.virusres.2019.197648] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2019] [Revised: 06/27/2019] [Accepted: 06/28/2019] [Indexed: 02/06/2023]
Abstract
Throughout the past few decades, numerous viral species have been generated as vaccine vectors. Every viral vector has its own distinct characteristics. For example, the family herpesviridae encompasses several viruses that have medical and veterinary importance. Attenuated herpesviruses are developed as vectors to convey heterologous immunogens targeting several serious and crucial pathogens. Some of these vectors have already been licensed for use in the veterinary field. One of their prominent features is their capability to accommodate large amount of foreign DNA, and to stimulate both cell-mediated and humoral immune responses. A better understanding of vector-host interaction builds up a robust foundation for the future development of herpesviruses-based vectors. At the time, many molecular tools are applied to enable the generation of herpesvirus-based recombinant vaccine vectors such as BAC technology, homologous and two-step en passant mutagenesis, codon optimization, and the CRISPR/Cas9 system. This review article highlights the most important techniques applied in constructing recombinant herpesviruses vectors, advantages and disadvantages of each recombinant herpesvirus vector, and the most recent research regarding their use to control major animal diseases.
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Affiliation(s)
- Mohamed Kamel
- Faculty of Veterinary Medicine, Department of Medicine and Infectious Diseases, Cairo University, Giza, Egypt.
| | - Amr El-Sayed
- Faculty of Veterinary Medicine, Department of Medicine and Infectious Diseases, Cairo University, Giza, Egypt
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Murugananthan A, Shanthalingam S, Batra SA, Alahan S, Srikumaran S. Leukotoxin of Bibersteinia trehalosi Contains a Unique Neutralizing Epitope, and a Non-Neutralizing Epitope Shared with Mannheimia haemolytica Leukotoxin. Toxins (Basel) 2018; 10:toxins10060220. [PMID: 29848968 PMCID: PMC6024558 DOI: 10.3390/toxins10060220] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2018] [Revised: 05/24/2018] [Accepted: 05/26/2018] [Indexed: 12/03/2022] Open
Abstract
Bibersteinia trehalosi and Mannheimia haemolytica, originally classified as Pasteurella haemolytica biotype T and biotype A, respectively, under Genus Pasteurella has now been placed under two different Genera, Bibersteinia and Mannheimia, based on DNA-DNA hybridization and 16S RNA studies. While M. haemolytica has been the predominant pathogen of pneumonia in ruminants, B. trehalosi is emerging as an important pathogen of ruminant pneumonia. Leukotoxin is the critical virulence factor of these two pathogens. While the leukotoxin of M. haemolytica has been well studied, the characterization of B. trehalosi leukotoxin has lagged behind. As the first step towards addressing this problem, we developed monoclonal antibodies (mAbs) against B. trehalosi leukotoxin and used them to characterize the leukotoxin epitopes. Two mAbs that recognized sequential epitopes on the leukotoxin were developed. One of them, AM113, neutralized B. trehalosi leukotoxin while the other, AM321, did not. The mAb AM113 revealed the existence of a neutralizing epitope on B. trehalosi leukotoxin that is not present on M. haemolytica leukotoxin. A previously developed mAb, MM601, revealed the presence of a neutralizing epitope on M. haemolytica leukotoxin that is not present on B. trehalosi leukotoxin. The mAb AM321 recognized a non-neutralizing epitope shared by the leukotoxins of B. trehalosi and M. haemolytica. The mAb AM113 should pave the way for mapping the leukotoxin-neutralizing epitope on B. trehalosi leukotoxin and the development of subunit vaccines and/or virus-vectored vaccines against this economically important respiratory pathogen of ruminants.
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Affiliation(s)
- Arumugam Murugananthan
- Department of Veterinary Microbiology and Pathology, College of Veterinary Medicine, Washington State University, Pullman, WA 99164-7040, USA.
- Department of Parasitology, Faculty of Medicine, University of Jaffna, Jaffna, Sri Lanka.
| | - Sudarvili Shanthalingam
- Department of Veterinary Microbiology and Pathology, College of Veterinary Medicine, Washington State University, Pullman, WA 99164-7040, USA.
| | - Sai Arun Batra
- Department of Veterinary Microbiology and Pathology, College of Veterinary Medicine, Washington State University, Pullman, WA 99164-7040, USA.
| | - Sitara Alahan
- Department of Veterinary Microbiology and Pathology, College of Veterinary Medicine, Washington State University, Pullman, WA 99164-7040, USA.
| | - Subramaniam Srikumaran
- Department of Veterinary Microbiology and Pathology, College of Veterinary Medicine, Washington State University, Pullman, WA 99164-7040, USA.
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Xu J, Wu J, Jiang B, He H, Zhang X, Li X, Yang D, Huang X, Sealy JE, Iqbal M, Li Y. Bovine single chain Fv antibody inhibits bovine herpesvirus-1 infectivity by targeting viral glycoprotein D. Appl Microbiol Biotechnol 2017; 101:8331-8344. [PMID: 29063173 DOI: 10.1007/s00253-017-8566-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Revised: 09/27/2017] [Accepted: 09/28/2017] [Indexed: 01/20/2023]
Abstract
Glycoprotein D (gD) of bovine herpesvirus-1 (BoHV-1) is essential for attachment and penetration of cells during infection and is a major target for neutralizing antibodies during an adaptive immune response. Currently there are no recombinant antibodies capable of binding gD epitopes for use in treating BoHV-1 infection. In this study, a bovine scFv gene derived from a hybridoma secreting monoclonal antibodies (McAbs) against the amino acid motif MEESKGYEPP of gD was expressed in E. coli. Molecular modeling, western blot and ELISA analysis showed that this scFv had a high affinity for BoHV-1 gD, with a Kd of 161.2 ± 37.58 nM and for whole BoHV-1 virus, with a Kd of 67.44 ± 16.99 nM. In addition, this scFv displayed a high affinity for BoHV-1 antigen in an ELISA and competed with BoHV-1 anti-serum in a competitive ELISA. Immunofluorescence assay (IFA) and laser confocal microscopy showed that this scFv could efficiently bind to and be internalized by BoHV-1 infected Madin-Darby bovine kidney (MDBK) cells. Importantly, this scFv was shown to inhibit BoHV-1 infectivity and to reduce the number of viral plaques by blocking viral attachment to MDBK cells. Our study suggests that this bovine single-chain antibody could be developed for use as a diagnostic and therapeutic agent against BoHV-1 infection in cattle.
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Affiliation(s)
- Jian Xu
- Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agricultural and Forestry Sciences, Beijing, People's Republic of China, 100097
| | - Jing Wu
- Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agricultural and Forestry Sciences, Beijing, People's Republic of China, 100097.,College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, Jiangxi, People's Republic of China, 330045
| | - Bo Jiang
- Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agricultural and Forestry Sciences, Beijing, People's Republic of China, 100097
| | - Houjun He
- College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, Jiangxi, People's Republic of China, 330045
| | - Xixi Zhang
- Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agricultural and Forestry Sciences, Beijing, People's Republic of China, 100097.,Animal Science and Technology College, Beijing University of Agriculture, Beijing, People's Republic of China, 102206
| | - Xiaoyang Li
- Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agricultural and Forestry Sciences, Beijing, People's Republic of China, 100097.,College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, Jiangxi, People's Republic of China, 330045
| | - Dawei Yang
- Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agricultural and Forestry Sciences, Beijing, People's Republic of China, 100097
| | - Xiufen Huang
- Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agricultural and Forestry Sciences, Beijing, People's Republic of China, 100097
| | - Joshua E Sealy
- The Pirbright Institute, Ash Rd, Pirbright, Woking, GU24 0NF, UK
| | - Munir Iqbal
- The Pirbright Institute, Ash Rd, Pirbright, Woking, GU24 0NF, UK
| | - Yongqing Li
- Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agricultural and Forestry Sciences, Beijing, People's Republic of China, 100097.
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