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Le NMT, So KK, Chun J, Kim DH. Expression of virus-like particles (VLPs) of foot-and-mouth disease virus (FMDV) using Saccharomyces cerevisiae. Appl Microbiol Biotechnol 2024; 108:81. [PMID: 38194136 PMCID: PMC10776484 DOI: 10.1007/s00253-023-12902-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 09/19/2023] [Accepted: 09/30/2023] [Indexed: 01/10/2024]
Abstract
We engineered Saccharomyces cerevisiae to express structural proteins of foot-and-mouth disease virus (FMDV) and produce virus-like particles (VLPs). The gene, which encodes four structural capsid proteins (VP0 (VP4 and VP2), VP3, and VP1), followed by a translational "ribosomal skipping" sequence consisting of 2A and protease 3C, was codon-optimized and chemically synthesized. The cloned gene was used to transform S. cerevisiae 2805 strain. Western blot analysis revealed that the polyprotein consisting of VP0, VP3, and VP1 was processed into the discrete capsid proteins. Western blot analysis of 3C confirmed the presence of discrete 3C protein, suggesting that the 2A sequence functioned as a "ribosomal skipping" signal in the yeast for an internal re-initiation of 3C translation from a monocistronic transcript, thereby indicating polyprotein processing by the discrete 3C protease. Moreover, a band corresponding to only VP2, which was known to be non-enzymatically processed from VP0 to both VP4 and VP2 during viral assembly, further validated the assembly of processed capsid proteins into VLPs. Electron microscopy showed the presence of the characteristic icosahedral VLPs. Our results clearly demonstrate that S. cerevisiae processes the viral structural polyprotein using a viral 3C protease and the resulting viral capsid subunits are assembled into virion particles. KEY POINTS: • Ribosomal skipping by self-cleaving FMDV peptide in S. cerevisiae. • Proteolytic processing of a structural polyprotein from a monocistronic transcript. • Assembly of the processed viral capsid proteins into a virus-like particle.
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Affiliation(s)
- Ngoc My Tieu Le
- Department of Bioactive Material Sciences, Jeonbuk National University, Jeonju, 54896, Jeollabuk-do, Republic of Korea
| | - Kum-Kang So
- Institute for Molecular Biology and Genetics, Department of Molecular Biology, Jeonbuk National University, Jeonju, Jeollabuk-Do, Republic of Korea
| | - Jeesun Chun
- Institute for Molecular Biology and Genetics, Department of Molecular Biology, Jeonbuk National University, Jeonju, Jeollabuk-Do, Republic of Korea
| | - Dae-Hyuk Kim
- Department of Bioactive Material Sciences, Jeonbuk National University, Jeonju, 54896, Jeollabuk-do, Republic of Korea.
- Institute for Molecular Biology and Genetics, Department of Molecular Biology, Jeonbuk National University, Jeonju, Jeollabuk-Do, Republic of Korea.
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Li X, Zhang ZW, Zhang FD, Li JH, Lv JL, Zhang LP, Zhai KG, Wang YL, Guo HC, Liu XS, Pan L. Double synergic chitosan-coated poly (lactic-co-glycolic) acid nanospheres loaded with nucleic acids as an intranasally administered vaccine delivery system to control the infection of foot-and-mouth disease virus. Antiviral Res 2024; 226:105900. [PMID: 38705200 DOI: 10.1016/j.antiviral.2024.105900] [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: 01/29/2024] [Revised: 03/16/2024] [Accepted: 05/03/2024] [Indexed: 05/07/2024]
Abstract
BACKGROUND & AIMS The spread of foot-and-mouth disease virus (FMDV) through aerosol droplets among cloven-hoofed ungulates in close contact is a major obstacle for successful animal husbandry. Therefore, the development of suitable mucosal vaccines, especially nasal vaccines, to block the virus at the initial site of infection is crucial. PATIENTS AND METHODS Here, we constructed eukaryotic expression plasmids containing the T and B-cell epitopes (pTB) of FMDV in tandem with the molecular mucosal adjuvant Fms-like tyrosine kinase receptor 3 ligand (Flt3 ligand, FL) (pTB-FL). Then, the constructed plasmid was electrostatically attached to mannose-modified chitosan-coated poly(lactic-co-glycolic) acid (PLGA) nanospheres (MCS-PLGA-NPs) to obtain an active nasal vaccine targeting the mannose-receptor on the surface of antigen-presenting cells (APCs). RESULTS The MCS-PLGA-NPs loaded with pTB-FL not only induced a local mucosal immune response, but also induced a systemic immune response in mice. More importantly, the nasal vaccine afforded an 80% protection rate against a highly virulent FMDV strain (AF72) when it was subcutaneously injected into the soles of the feet of guinea pigs. CONCLUSIONS The nasal vaccine prepared in this study can effectively induce a cross-protective immune response against the challenge with FMDV of same serotype in animals and is promising as a potential FMDV vaccine.
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Affiliation(s)
- Xian Li
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, National Foot-and-Mouth Diseases Reference Laboratory, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China; Gansu Province Research Center for Basic Disciplines of Pathogen Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730046, China
| | - Zhong-Wang Zhang
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, National Foot-and-Mouth Diseases Reference Laboratory, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China; Gansu Province Research Center for Basic Disciplines of Pathogen Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730046, China
| | - Fu-Dong Zhang
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, National Foot-and-Mouth Diseases Reference Laboratory, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China; Gansu Province Research Center for Basic Disciplines of Pathogen Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730046, China
| | - Jia-Hao Li
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, National Foot-and-Mouth Diseases Reference Laboratory, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China; Gansu Province Research Center for Basic Disciplines of Pathogen Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730046, China
| | - Jian-Liang Lv
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, National Foot-and-Mouth Diseases Reference Laboratory, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China; Gansu Province Research Center for Basic Disciplines of Pathogen Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730046, China
| | - Li-Ping Zhang
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, National Foot-and-Mouth Diseases Reference Laboratory, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China; Gansu Province Research Center for Basic Disciplines of Pathogen Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730046, China
| | - Kai-Ge Zhai
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, National Foot-and-Mouth Diseases Reference Laboratory, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China; Gansu Province Research Center for Basic Disciplines of Pathogen Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730046, China
| | - Yong-Lu Wang
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, National Foot-and-Mouth Diseases Reference Laboratory, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China; Gansu Province Research Center for Basic Disciplines of Pathogen Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730046, China
| | - Hui-Chen Guo
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, National Foot-and-Mouth Diseases Reference Laboratory, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China; Gansu Province Research Center for Basic Disciplines of Pathogen Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730046, China
| | - Xin-Sheng Liu
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, National Foot-and-Mouth Diseases Reference Laboratory, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China; Gansu Province Research Center for Basic Disciplines of Pathogen Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730046, China.
| | - Li Pan
- State Key Laboratory for Animal Disease Control and Prevention, College of Veterinary Medicine, Lanzhou University, National Foot-and-Mouth Diseases Reference Laboratory, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China; Gansu Province Research Center for Basic Disciplines of Pathogen Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730046, China.
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Peng Y, Yan H, Zhang J, Peng R, Feng X, Su J, Yi H, Lu Y, Chen Z. Potent immune responses against thermostable Foot-and-Mouth disease virus VP1 nanovaccine adjuvanted with polymeric thermostable scaffold. Vaccine 2024; 42:732-737. [PMID: 38220487 DOI: 10.1016/j.vaccine.2023.12.079] [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: 06/17/2023] [Revised: 12/22/2023] [Accepted: 12/24/2023] [Indexed: 01/16/2024]
Abstract
Foot-and-mouth disease (FMD) is an acute zoonosis causes significant economic losses. Vaccines able to stimulate efficient protective immune responses are urgently needed. In this study, Escherichia coli-derived recombinant VP1 of serotype A and O FMD virus (FMDV) was conjugated to thermostable scaffold lumazine synthase (LS) or Quasibacillus thermotolerans encapsulin (QtEnc) using a robust plug-and-display SpyTag/SpyCatcher system to generate multimeric nanovaccines. These nanovaccines induced highly potent antibody responses in vaccinated mice. On day 14 after the first immunisation, antibody titres were approximately 100 times higher than those of monomer antigens. Both vaccines induced high and long-term IgG antibody production. Moreover, the QtEnc-VP1 nanovaccine induced higher antibody titres than the LS-VP1 nanovaccine. The nanovaccines also induced Th1-biased immune responses and higher levels of neutralising antibodies. These data indicated that FMDV nanovaccines generated by conjugating VP1 with a thermostable scaffold are highly immunogenic and ideal candidates for FMDV control in low-resource areas.
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Affiliation(s)
- Yuanli Peng
- One Health Center of Excellence for Research and Training, School of Public Health, Sun Yat-Sen University, Guangzhou, 510080, China; NMPA Key Laboratory for Quality Monitoring and Evaluation of Vaccines and Biological Products, Guangzhou, 510080, China; Key Laboratory of Tropical Diseases Control, Sun Yat-Sen University, Ministry of Education, Guangzhou, 510080, China
| | - Haozhen Yan
- One Health Center of Excellence for Research and Training, School of Public Health, Sun Yat-Sen University, Guangzhou, 510080, China; NMPA Key Laboratory for Quality Monitoring and Evaluation of Vaccines and Biological Products, Guangzhou, 510080, China; Key Laboratory of Tropical Diseases Control, Sun Yat-Sen University, Ministry of Education, Guangzhou, 510080, China
| | - Jinsong Zhang
- One Health Center of Excellence for Research and Training, School of Public Health, Sun Yat-Sen University, Guangzhou, 510080, China; NMPA Key Laboratory for Quality Monitoring and Evaluation of Vaccines and Biological Products, Guangzhou, 510080, China; Key Laboratory of Tropical Diseases Control, Sun Yat-Sen University, Ministry of Education, Guangzhou, 510080, China
| | - Ruihao Peng
- One Health Center of Excellence for Research and Training, School of Public Health, Sun Yat-Sen University, Guangzhou, 510080, China; NMPA Key Laboratory for Quality Monitoring and Evaluation of Vaccines and Biological Products, Guangzhou, 510080, China; Key Laboratory of Tropical Diseases Control, Sun Yat-Sen University, Ministry of Education, Guangzhou, 510080, China
| | - Xiangning Feng
- One Health Center of Excellence for Research and Training, School of Public Health, Sun Yat-Sen University, Guangzhou, 510080, China; NMPA Key Laboratory for Quality Monitoring and Evaluation of Vaccines and Biological Products, Guangzhou, 510080, China; Key Laboratory of Tropical Diseases Control, Sun Yat-Sen University, Ministry of Education, Guangzhou, 510080, China
| | - Jiayue Su
- One Health Center of Excellence for Research and Training, School of Public Health, Sun Yat-Sen University, Guangzhou, 510080, China; NMPA Key Laboratory for Quality Monitoring and Evaluation of Vaccines and Biological Products, Guangzhou, 510080, China; Key Laboratory of Tropical Diseases Control, Sun Yat-Sen University, Ministry of Education, Guangzhou, 510080, China
| | - Huaimin Yi
- One Health Center of Excellence for Research and Training, School of Public Health, Sun Yat-Sen University, Guangzhou, 510080, China; NMPA Key Laboratory for Quality Monitoring and Evaluation of Vaccines and Biological Products, Guangzhou, 510080, China; Key Laboratory of Tropical Diseases Control, Sun Yat-Sen University, Ministry of Education, Guangzhou, 510080, China
| | - Yuying Lu
- One Health Center of Excellence for Research and Training, School of Public Health, Sun Yat-Sen University, Guangzhou, 510080, China; NMPA Key Laboratory for Quality Monitoring and Evaluation of Vaccines and Biological Products, Guangzhou, 510080, China; Key Laboratory of Tropical Diseases Control, Sun Yat-Sen University, Ministry of Education, Guangzhou, 510080, China
| | - Zeliang Chen
- One Health Center of Excellence for Research and Training, School of Public Health, Sun Yat-Sen University, Guangzhou, 510080, China; NMPA Key Laboratory for Quality Monitoring and Evaluation of Vaccines and Biological Products, Guangzhou, 510080, China; Key Laboratory of Tropical Diseases Control, Sun Yat-Sen University, Ministry of Education, Guangzhou, 510080, China; Key Laboratory of Zoonose Prevention and Control at Universities of Inner Mongolia Autonomous Region, Medical College, Inner Mongolia Minzu University, Tongliao, 028000, P. R. China; Key Laboratory of Livestock Infectious Diseases, Ministry of Education, Shenyang Agricultural University, Shenyang, 110866, China.
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Woldemariyam FT, Kariuki CK, Kamau J, De Vleeschauwer A, De Clercq K, Lefebvre DJ, Paeshuyse J. Epidemiological Dynamics of Foot-and-Mouth Disease in the Horn of Africa: The Role of Virus Diversity and Animal Movement. Viruses 2023; 15:v15040969. [PMID: 37112947 PMCID: PMC10143177 DOI: 10.3390/v15040969] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 04/11/2023] [Accepted: 04/13/2023] [Indexed: 04/29/2023] Open
Abstract
The Horn of Africa is a large area of arid and semi-arid land, holding about 10% of the global and 40% of the entire African livestock population. The region's livestock production system is mainly extensive and pastoralist. It faces countless problems, such as a shortage of pastures and watering points, poor access to veterinary services, and multiple endemic diseases like foot-and-mouth disease (FMD). Foot-and-mouth disease is one of the most economically important livestock diseases worldwide and is endemic in most developing countries. Within Africa, five of the seven serotypes of the FMD virus (FMDV) are described, but serotype C is not circulating anymore, a burden unseen anywhere in the world. The enormous genetic diversity of FMDV is favored by an error-prone RNA-dependent RNA polymerase, intra-typic and inter-typic recombination, as well as the quasi-species nature of the virus. This paper describes the epidemiological dynamics of foot-and-mouth disease in the Horn of Africa with regard to the serotypes and topotypes distribution of FMDV, the livestock production systems practiced, animal movement, the role of wildlife, and the epidemiological complexity of FMD. Within this review, outbreak investigation data and serological studies confirm the endemicity of the disease in the Horn of Africa. Multiple topotypes of FMDV are described in the literature as circulating in the region, with further evolution of virus diversity predicted. A large susceptible livestock population and the presence of wild ungulates are described as complicating the epidemiology of the disease. Further, the husbandry practices and legal and illegal trading of livestock and their products, coupled with poor biosecurity practices, are also reported to impact the spread of FMDV within and between countries in the region. The porosity of borders for pastoralist herders fuels the unregulated transboundary livestock trade. There are no systematic control strategies in the region except for sporadic vaccination with locally produced vaccines, while literature indicates that effective control measures should also consider virus diversity, livestock movements/biosecurity, transboundary trade, and the reduction of contact with wild, susceptible ungulates.
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Affiliation(s)
- Fanos Tadesse Woldemariyam
- Laboratory of Host-Pathogen Interaction in Livestock, Division of Animal and Human Health Engineering, Department of Biosystems, KU Leuven, 3001 Leuven, Belgium
- College of Veterinary Medicine, Addis Ababa University, Bishoftu P.O. Box 34, Ethiopia
| | - Christopher Kinyanjui Kariuki
- Laboratory of Host-Pathogen Interaction in Livestock, Division of Animal and Human Health Engineering, Department of Biosystems, KU Leuven, 3001 Leuven, Belgium
- Institute of Primate Research, Karen, Nairobi P.O. Box 24481-00502, Kenya
| | - Joseph Kamau
- Institute of Primate Research, Karen, Nairobi P.O. Box 24481-00502, Kenya
- Department of Biochemistry, University of Nairobi, Nairobi P.O. Box 30197, Kenya
| | | | - Kris De Clercq
- Sciensano, Service for Exotic and Vector-Borne Diseases, 1050 Brussels, Belgium
| | - David J Lefebvre
- Sciensano, Service for Exotic and Vector-Borne Diseases, 1050 Brussels, Belgium
| | - Jan Paeshuyse
- Laboratory of Host-Pathogen Interaction in Livestock, Division of Animal and Human Health Engineering, Department of Biosystems, KU Leuven, 3001 Leuven, Belgium
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Li Q, Wubshet AK, Wang Y, Heath L, Zhang J. B and T Cell Epitopes of the Incursionary Foot-and-Mouth Disease Virus Serotype SAT2 for Vaccine Development. Viruses 2023; 15:v15030797. [PMID: 36992505 PMCID: PMC10059872 DOI: 10.3390/v15030797] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 02/26/2023] [Accepted: 03/03/2023] [Indexed: 03/31/2023] Open
Abstract
Failure of cross-protection among interserotypes and intratypes of foot-and-mouth disease virus (FMDV) is a big threat to endemic countries and their prevention and control strategies. However, insights into practices relating to the development of a multi-epitope vaccine appear as a best alternative approach to alleviate the cross-protection-associated problems. In order to facilitate the development of such a vaccine design approach, identification and prediction of the antigenic B and T cell epitopes along with determining the level of immunogenicity are essential bioinformatics steps. These steps are well applied in Eurasian serotypes, but very rare in South African Territories (SAT) Types, particularly in serotype SAT2. For this reason, the available scattered immunogenic information on SAT2 epitopes needs to be organized and clearly understood. Therefore, in this review, we compiled relevant bioinformatic reports about B and T cell epitopes of the incursionary SAT2 FMDV and the promising experimental demonstrations of such designed and developed vaccines against this serotype.
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Affiliation(s)
- Qian Li
- Key Laboratory of Veterinary Etiological Biology, National/WOAH Foot and Mouth Disease Reference Laboratory, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China
| | - Ashenafi Kiros Wubshet
- Key Laboratory of Veterinary Etiological Biology, National/WOAH Foot and Mouth Disease Reference Laboratory, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China
- Department of Veterinary Basics and Diagnostic Sciences, College of Veterinary Science, Mekelle University, Mekelle 2084, Tigray, Ethiopia
| | - Yang Wang
- Key Laboratory of Veterinary Etiological Biology, National/WOAH Foot and Mouth Disease Reference Laboratory, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China
| | - Livio Heath
- Transboundary Animal Diseases: Vaccine Production Programme, Onderstepoort Veterinary Research Institute, Agricultural Research Council, Pretoria 0110, South Africa
| | - Jie Zhang
- Hebei Key Laboratory of Preventive Veterinary Medicine, College of Animal Science and Technology, Hebei Normal University of Science and Technology, Qinhuangdao 066004, China
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Zhang F, Zhang Z, Li X, Li J, Lv J, Ma Z, Pan L. Immune Responses to Orally Administered Recombinant Lactococcus lactis Expressing Multi-Epitope Proteins Targeting M Cells of Foot-and-Mouth Disease Virus. Viruses 2021; 13:v13102036. [PMID: 34696469 PMCID: PMC8537116 DOI: 10.3390/v13102036] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 09/28/2021] [Accepted: 09/30/2021] [Indexed: 11/16/2022] Open
Abstract
Foot and mouth disease virus (FMDV), whose transmission occurs through mucosal surfaces, can also be transmitted through aerosols, direct contact, and pollutants. Therefore, mucosal immunity can efficiently inhibit viral colonization. Since vaccine material delivery into immune sites is important for efficient oral mucosal vaccination, the M cell-targeting approach is important for effective vaccination given M cells are vital for luminal antigen influx into the mucosal lymph tissues. In this study, we coupled M cell-targeting ligand Co1 to multi-epitope TB1 of FMDV to obtain TB1-Co1 in order to improve delivery efficiency of the multi-epitope protein antigen TB1. Lactococcus lactis (L. lactis) was engineered to express heterologous antigens for applications as vaccine vehicles with the ability to elicit mucosal as well as systemic immune responses. We successfully constructed L. lactis (recombinant) with the ability to express multi-epitope antigen proteins (TB1 and TB1-Co1) of the FMDV serotype A (named L. lactis-TB1 and L. lactis-TB1-Co1). Then, we investigated the immunogenic potential of the constructed recombinant L. lactis in mice and guinea pigs. Orally administered L. lactis-TB1 as well as L. lactis-TB1-Co1 in mice effectively induced mucosal secretory IgA (SIgA) and IgG secretion, development of a strong cell-mediated immune reactions, substantial T lymphocyte proliferation in the spleen, and upregulated IL-2, IFN-γ, IL-10, and IL-5 levels. Orally administered ligand-conjugated TB1 promoted specific IgG as well as SIgA responses in systemic and mucosal surfaces, respectively, when compared to orally administered TB1 alone. Then, guinea pigs were orally vaccinated with L. lactis-TB1-Co1 plus adjuvant CpG-ODN at three different doses, L. lactis-TB1-Co1, and PBS. Animals that had been immunized with L. lactis-TB1-Co1 plus adjuvant CpG-ODN and L. lactis-TB1-Co1 developed elevated antigen-specific serum IgG, IgA, neutralizing antibody, and mucosal SIgA levels, when compared to control groups. Particularly, in mice, L. lactis-TB1-Co1 exhibited excellent immune effects than L. lactis-TB1. Therefore, L. lactis-TB1-Co1 can induce elevations in mucosal as well as systemic immune reactions, and to a certain extent, provide protection against FMDV. In conclusion, M cell-targeting approaches can be employed in the development of effective oral mucosa vaccines for FMDV.
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Affiliation(s)
- Fudong Zhang
- State Key Laboratory of Veterinary Etiological Biology, National Foot-and-Mouth Diseases Reference Laboratory, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China; (F.Z.); (Z.Z.); (X.L.); (J.L.); (J.L.); (Z.M.)
| | - Zhongwang Zhang
- State Key Laboratory of Veterinary Etiological Biology, National Foot-and-Mouth Diseases Reference Laboratory, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China; (F.Z.); (Z.Z.); (X.L.); (J.L.); (J.L.); (Z.M.)
| | - Xian Li
- State Key Laboratory of Veterinary Etiological Biology, National Foot-and-Mouth Diseases Reference Laboratory, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China; (F.Z.); (Z.Z.); (X.L.); (J.L.); (J.L.); (Z.M.)
| | - Jiahao Li
- State Key Laboratory of Veterinary Etiological Biology, National Foot-and-Mouth Diseases Reference Laboratory, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China; (F.Z.); (Z.Z.); (X.L.); (J.L.); (J.L.); (Z.M.)
| | - Jianliang Lv
- State Key Laboratory of Veterinary Etiological Biology, National Foot-and-Mouth Diseases Reference Laboratory, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China; (F.Z.); (Z.Z.); (X.L.); (J.L.); (J.L.); (Z.M.)
| | - Zhongyuan Ma
- State Key Laboratory of Veterinary Etiological Biology, National Foot-and-Mouth Diseases Reference Laboratory, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China; (F.Z.); (Z.Z.); (X.L.); (J.L.); (J.L.); (Z.M.)
| | - Li Pan
- State Key Laboratory of Veterinary Etiological Biology, National Foot-and-Mouth Diseases Reference Laboratory, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China; (F.Z.); (Z.Z.); (X.L.); (J.L.); (J.L.); (Z.M.)
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou 225009, China
- Correspondence:
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Kenubih A. Foot and Mouth Disease Vaccine Development and Challenges in Inducing Long-Lasting Immunity: Trends and Current Perspectives. VETERINARY MEDICINE-RESEARCH AND REPORTS 2021; 12:205-215. [PMID: 34513635 PMCID: PMC8420785 DOI: 10.2147/vmrr.s319761] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Accepted: 07/29/2021] [Indexed: 11/26/2022]
Abstract
Foot and mouth disease (FMD) is an extremely contagious viral disease of livestock caused by foot and mouse disease virus genus: Aphthovirus, which causes a serious economic impact on both individual farmers and the national economy. Many attempts to advance a vaccine for FMD have failed to induce sterile immunity. The classical methods of vaccine production were due to selective accumulation of mutations around antigenic and binding sites. Reversion of the agent by positive selection and quasi-species swarm, use of this method is inapplicable for use in non-endemic areas. Chemical attenuation using binary ethyleneimine (BEI) protected the capsid integrity and produced a pronounced immunity against the challenge strain. Viral antigens which have been chemically synthesized or expressed in viruses, plasmid, or plants were tried in the vaccination of animals. DNA vaccines expressing either structural or nonstructural protein antigens have been tried to immunize animals. Using interleukins as a genetic adjuvant for DNA vaccines have a promising effect. While the challenges of inducing sterile immunity lies on non-structural (NS) proteins of FMDV which are responsible for apoptosis of dendritic cells and have negative effects on lympho-proliferative responses which lead to transient immunosuppression. Furthermore, destruction of host protein trafficking by nonstructural proteins suppressed CD8+ T-cell proliferation. In this review, it tried to address multiple approaches for vaccine development trials and bottle necks of producing sterile immunity.
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Affiliation(s)
- Ambaye Kenubih
- University of Gondar, College of Veterinary Medicine and Animal Sciences, Para-Clinical Studies, Gondar, Ethiopia
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Rodríguez-Habibe I, Celis-Giraldo C, Patarroyo ME, Avendaño C, Patarroyo MA. A Comprehensive Review of the Immunological Response against Foot-and-Mouth Disease Virus Infection and Its Evasion Mechanisms. Vaccines (Basel) 2020; 8:vaccines8040764. [PMID: 33327628 PMCID: PMC7765147 DOI: 10.3390/vaccines8040764] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 11/25/2020] [Accepted: 11/27/2020] [Indexed: 12/14/2022] Open
Abstract
Foot-and-mouth disease (FMD) is a highly contagious viral disease, which has been reported for over 100 years, and against which the struggle has lasted for the same amount of time. It affects individuals from the order Artiodactyla, such as cattle, swine, sheep, wild animals from this order, and a few non-cloven hoofed species, such as mice and elephants. FMD causes large-scale economic losses for agricultural production systems; morbidity is almost 100% in an affected population, accompanied by a high mortality rate in young animals due to myocarditis or an inability to suckle if a mother is ill. The aetiological agent is an Aphthovirus from the family Picornaviridae, having seven serotypes: A, O, C, SAT1, SAT2, SAT3, and Asia 1. Serotype variability means that an immune response is serospecific and vaccines are thus designed to protect against each serotype independently. A host’s adaptive immune response is key in defence against pathogens; however, this virus uses successful strategies (along with most microorganisms) enabling it to evade a host’s immune system to rapidly and efficiently establish itself within such host, and thus remain there. This review has been aimed at an in-depth analysis of the immune response in cattle and swine regarding FMD virus, the possible evasion mechanisms used by the virus and describing some immunological differences regarding these species. Such aspects can provide pertinent knowledge for developing new FMD control and prevention strategies.
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Affiliation(s)
- Ibett Rodríguez-Habibe
- Animal Science Faculty, Universidad de Ciencias Aplicadas y Ambientales (U.D.C.A), Bogotá 111166, Colombia; (I.R.-H.); (C.C.-G.)
- Masters Programme in Veterinary Science, Universidad de Ciencias Aplicadas y Ambientales (U.D.C.A), Bogotá 111166, Colombia
| | - Carmen Celis-Giraldo
- Animal Science Faculty, Universidad de Ciencias Aplicadas y Ambientales (U.D.C.A), Bogotá 111166, Colombia; (I.R.-H.); (C.C.-G.)
| | - Manuel Elkin Patarroyo
- Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá 111321, Colombia;
- Faculty of Medicine, Universidad Nacional de Colombia, Bogotá 111321, Colombia
| | - Catalina Avendaño
- Animal Science Faculty, Universidad de Ciencias Aplicadas y Ambientales (U.D.C.A), Bogotá 111166, Colombia; (I.R.-H.); (C.C.-G.)
- Correspondence: (C.A.); (M.A.P.); Tel.: +57-6684-700 (C.A.); +57-1324-4672 (M.A.P.)
| | - Manuel Alfonso Patarroyo
- Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá 111321, Colombia;
- School of Medicine and Health Sciences, Universidad del Rosario, Bogotá 112111, Colombia
- Correspondence: (C.A.); (M.A.P.); Tel.: +57-6684-700 (C.A.); +57-1324-4672 (M.A.P.)
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9
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Hardham JM, Krug P, Pacheco JM, Thompson J, Dominowski P, Moulin V, Gay CG, Rodriguez LL, Rieder E. Novel Foot-and-Mouth Disease Vaccine Platform: Formulations for Safe and DIVA-Compatible FMD Vaccines With Improved Potency. Front Vet Sci 2020; 7:554305. [PMID: 33088833 PMCID: PMC7544895 DOI: 10.3389/fvets.2020.554305] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 08/13/2020] [Indexed: 11/13/2022] Open
Abstract
Inactivated, wild-type foot-and-mouth disease virus (FMDV) vaccines are currently used to control FMD around the world. These traditional FMD vaccines are produced using large quantities of infectious, virulent, wild-type FMD viruses, with the associated risk of virus escape from manufacturing facilities or incomplete inactivation during the vaccine formulation process. While higher quality vaccines produced from wild-type FMDV are processed to reduce non-structural antigens, there is still a risk that small amounts of non-structural proteins may be present in the final product. A novel, antigenically marked FMD-LL3B3D vaccine platform under development by Zoetis, Inc. and the USDA-ARS, consists of a highly attenuated virus platform containing negative antigenic markers in the conserved non-structural proteins 3Dpol and 3B that render resultant vaccines fully DIVA compatible. This vaccine platform allows for the easy exchange of capsid coding sequences to create serotype-specific vaccines. Here we demonstrate the efficacy of the inactivated FMD-LL3B3D-A24 Cruzeiro vaccine in cattle against wild-type challenge with A24 Cruzerio. A proprietary adjuvant system was used to formulate the vaccines that conferred effective protection at low doses while maintaining the DIVA compatibility. In contrast to wild-type FMDV, the recombinant FMD-LL3B3D mutant viruses have been shown to induce no clinical signs of FMD and no shedding of virus in cattle or pigs when inoculated as a live virus. The FMD-LL3B3D vaccine platform, currently undergoing development in the US, provides opportunities for safer vaccine production with full DIVA compatibility in support of global FMDV control and eradication initiatives.
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Affiliation(s)
| | - Peter Krug
- United States Department of Agriculture (USDA) Plum Island Animal Disease Center, Agricultural Research Services, USDA, Greenport, NY, United States
| | - Juan M Pacheco
- United States Department of Agriculture (USDA) Plum Island Animal Disease Center, Agricultural Research Services, USDA, Greenport, NY, United States
| | | | | | | | - Cyril G Gay
- United States Department of Agriculture (USDA) Office of National Programs, Agricultural Research Services, Beltsville, MD, United States
| | - Luis L Rodriguez
- United States Department of Agriculture (USDA) Plum Island Animal Disease Center, Agricultural Research Services, USDA, Greenport, NY, United States
| | - Elizabeth Rieder
- United States Department of Agriculture (USDA) Plum Island Animal Disease Center, Agricultural Research Services, USDA, Greenport, NY, United States
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10
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de León P, Cañas-Arranz R, Saez Y, Forner M, Defaus S, Cuadra D, Bustos MJ, Torres E, Andreu D, Blanco E, Sobrino F, Hammer SE. Association of Porcine Swine Leukocyte Antigen (SLA) Haplotypes with B- and T-Cell Immune Response to Foot-and-Mouth Disease Virus (FMDV) Peptides. Vaccines (Basel) 2020; 8:vaccines8030513. [PMID: 32911818 PMCID: PMC7563261 DOI: 10.3390/vaccines8030513] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 08/15/2020] [Accepted: 09/01/2020] [Indexed: 12/15/2022] Open
Abstract
Dendrimer peptides are promising vaccine candidates against the foot-and-mouth disease virus (FMDV). Several B-cell epitope (B2T) dendrimers, harboring a major FMDV antigenic B-cell site in VP1 protein, are covalently linked to heterotypic T-cell epitopes from 3A and/or 3D proteins, and elicited consistent levels of neutralizing antibodies and IFN-γ-producing cells in pigs. To address the contribution of the highly polymorphic nature of the porcine MHC (SLA, swine leukocyte antigen) on the immunogenicity of B2T dendrimers, low-resolution (Lr) haplotyping was performed. We looked for possible correlations between particular Lr haplotypes with neutralizing antibody and T-cell responses induced by B2T peptides. In this study, 63 pigs immunized with B2T dendrimers and 10 non-immunized (control) animals are analyzed. The results reveal a robust significant correlation between SLA class-II Lr haplotypes and the T-cell response. Similar correlations of T-cell response with SLA class-I Lr haplotypes, and between B-cell antibody response and SLA class-I and SLA class-II Lr haplotypes, were only found when the sample was reduced to animals with Lr haplotypes represented more than once. These results support the contribution of SLA class-II restricted T-cells to the magnitude of the T-cell response and to the antibody response evoked by the B2T dendrimers, being of potential value for peptide vaccine design against FMDV.
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Affiliation(s)
- Patricia de León
- Centro de Biología Molecular “Severo Ochoa” (CSIC-UAM), 28049 Madrid, Spain; (P.d.L.); (R.C.-A.); (M.J.B.); (E.T.)
| | - Rodrigo Cañas-Arranz
- Centro de Biología Molecular “Severo Ochoa” (CSIC-UAM), 28049 Madrid, Spain; (P.d.L.); (R.C.-A.); (M.J.B.); (E.T.)
| | - Yago Saez
- Computer Science Department, Universidad Carlos III of Madrid, Leganés, 28911 Madrid, Spain;
| | - Mar Forner
- Departament de Ciències Experimentals i de la Salut, Universitat Pompeu Fabra, 08003 Barcelona, Spain; (M.F.); (S.D.); (D.A.)
| | - Sira Defaus
- Departament de Ciències Experimentals i de la Salut, Universitat Pompeu Fabra, 08003 Barcelona, Spain; (M.F.); (S.D.); (D.A.)
| | - Dolores Cuadra
- Computer Science Department, Universidad Rey Juan Carlos, 28933 Móstoles, Spain;
| | - María J. Bustos
- Centro de Biología Molecular “Severo Ochoa” (CSIC-UAM), 28049 Madrid, Spain; (P.d.L.); (R.C.-A.); (M.J.B.); (E.T.)
| | - Elisa Torres
- Centro de Biología Molecular “Severo Ochoa” (CSIC-UAM), 28049 Madrid, Spain; (P.d.L.); (R.C.-A.); (M.J.B.); (E.T.)
| | - David Andreu
- Departament de Ciències Experimentals i de la Salut, Universitat Pompeu Fabra, 08003 Barcelona, Spain; (M.F.); (S.D.); (D.A.)
| | - Esther Blanco
- Centro de Investigación en Sanidad Animal (CISA-INIA), Valdeolmos, 28130 Madrid, Spain;
| | - Francisco Sobrino
- Centro de Biología Molecular “Severo Ochoa” (CSIC-UAM), 28049 Madrid, Spain; (P.d.L.); (R.C.-A.); (M.J.B.); (E.T.)
- Correspondence: (F.S.); (S.E.H.); Tel.: +34-9119-64493 (F.S.); +43-1-25077-2754 (S.E.H.)
| | - Sabine E. Hammer
- Institute of Immunology, Department of Pathobiology, University of Veterinary Medicine Vienna, A-1210 Vienna, Austria
- Correspondence: (F.S.); (S.E.H.); Tel.: +34-9119-64493 (F.S.); +43-1-25077-2754 (S.E.H.)
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11
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Xie Y, Chang H, Li Z, Zhang Y. Adenovirus-Vectored Capsid Proteins of the Serotype A Foot-and-Mouth Disease Virus Protect Guinea Pigs Against Challenge. Front Microbiol 2020; 11:1449. [PMID: 32733405 PMCID: PMC7363769 DOI: 10.3389/fmicb.2020.01449] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Accepted: 06/04/2020] [Indexed: 01/17/2023] Open
Abstract
Type A foot-and-mouth disease virus (FMDV) has been detected on China’s pig farms since 2015, and all suspected samples have been strain A/GDMM/CHA/2013. To overcome the shortcomings of inactive FMDV vaccines, we expressed the capsid protein precursor P1-2A and mutated viral 3C protease of FMDV strain A/GDMM/CHA/2013 in a replication-deficient human adenovirus type 5 vector in this study. A significant humoral immune response, T-cell-mediated antiviral response, and mucosa-mediated antiviral response were induced by the adenovirus-vectored FMDV vaccines in BALB/c mice. Immunization of guinea pigs with the adenovirus-vectored FMD vaccines induced significant neutralizing antibodies and anti-FMDV immunoglobulin A antibodies. The recombinant adenovirus rAdv-P12A3CG38SF48S-GD protected 100% of guinea pigs against challenge when administered intramuscularly. Our study demonstrated the potential utility of rAdv-P12A3CG38SF48S-GD as a vaccine against type A FMDV.
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Affiliation(s)
- Yinli Xie
- College of Veterinary Medicine, Northwest A&F University, Yangling, China.,State Key Laboratory of Veterinary Etiological Biology, OIE/National Foot-and-Mouth Disease Reference Laboratory, Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Huiyun Chang
- State Key Laboratory of Veterinary Etiological Biology, OIE/National Foot-and-Mouth Disease Reference Laboratory, Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Zhiyong Li
- State Key Laboratory of Veterinary Etiological Biology, OIE/National Foot-and-Mouth Disease Reference Laboratory, Key Laboratory of Animal Virology of Ministry of Agriculture, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Yanming Zhang
- College of Veterinary Medicine, Northwest A&F University, Yangling, China
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12
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Arzt J, Fish I, Pauszek SJ, Johnson SL, Chain PS, Rai DK, Rieder E, Goldberg TL, Rodriguez LL, Stenfeldt C. The evolution of a super-swarm of foot-and-mouth disease virus in cattle. PLoS One 2019; 14:e0210847. [PMID: 31022193 PMCID: PMC6483180 DOI: 10.1371/journal.pone.0210847] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 04/05/2019] [Indexed: 02/06/2023] Open
Abstract
Foot-and-mouth disease (FMD) is a highly contagious viral disease that severely impacts global food security and is one of the greatest constraints on international trade of animal products. Extensive viral population diversity and rapid, continuous mutation of circulating FMD viruses (FMDVs) pose significant obstacles to the control and ultimate eradication of this important transboundary pathogen. The current study investigated mechanisms contributing to within-host evolution of FMDV in a natural host species (cattle). Specifically, vaccinated and non-vaccinated cattle were infected with FMDV under controlled, experimental conditions and subsequently sampled for up to 35 days to monitor viral genomic changes as related to phases of disease and experimental cohorts. Consensus-level genomic changes across the entire FMDV coding region were characterized through three previously defined stages of infection: early, transitional, and persistent. The overall conclusion was that viral evolution occurred via a combination of two mechanisms: emergence of full-genomic minority haplotypes from within the inoculum super-swarm, and concurrent continuous point mutations. Phylogenetic analysis indicated that individuals were infected with multiple distinct haplogroups that were pre-existent within the ancestral inoculum used to infect all animals. Multiple shifts of dominant viral haplotype took place during the early and transitional phases of infection, whereas few shifts occurred during persistent infection. Overall, this work suggests that the establishment of the carrier state is not associated with specific viral genomic characteristics. These insights into FMDV population dynamics have important implications for virus sampling methodology and molecular epidemiology.
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Affiliation(s)
- Jonathan Arzt
- Foreign Animal Disease Research Unit, Plum Island Animal Disease Center, ARS, USDA, Greenport, NY, United States of America
| | - Ian Fish
- Foreign Animal Disease Research Unit, Plum Island Animal Disease Center, ARS, USDA, Greenport, NY, United States of America.,Oak Ridge Institute for Science and Education, PIADC Research Participation Program, Oak Ridge, TN, United States of America
| | - Steven J Pauszek
- Foreign Animal Disease Research Unit, Plum Island Animal Disease Center, ARS, USDA, Greenport, NY, United States of America
| | - Shannon L Johnson
- Los Alamos National Laboratory, Los Alamos, NM, United States of America
| | - Patrick S Chain
- Los Alamos National Laboratory, Los Alamos, NM, United States of America
| | - Devendra K Rai
- Foreign Animal Disease Research Unit, Plum Island Animal Disease Center, ARS, USDA, Greenport, NY, United States of America.,Department of Veterinary Population Medicine, University of Minnesota, St Paul, MN, United States of America
| | - Elizabeth Rieder
- Foreign Animal Disease Research Unit, Plum Island Animal Disease Center, ARS, USDA, Greenport, NY, United States of America
| | - Tony L Goldberg
- Department of Pathobiological Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, WI, United States of America
| | - Luis L Rodriguez
- Foreign Animal Disease Research Unit, Plum Island Animal Disease Center, ARS, USDA, Greenport, NY, United States of America
| | - Carolina Stenfeldt
- Foreign Animal Disease Research Unit, Plum Island Animal Disease Center, ARS, USDA, Greenport, NY, United States of America.,Department of Veterinary Population Medicine, University of Minnesota, St Paul, MN, United States of America
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13
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Arzt J, Fish I, Pauszek SJ, Johnson SL, Chain PS, Rai DK, Rieder E, Goldberg TL, Rodriguez LL, Stenfeldt C. The evolution of a super-swarm of foot-and-mouth disease virus in cattle. PLoS One 2019; 14:e0210847. [PMID: 31022193 DOI: 10.1101/512178] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 04/05/2019] [Indexed: 05/21/2023] Open
Abstract
Foot-and-mouth disease (FMD) is a highly contagious viral disease that severely impacts global food security and is one of the greatest constraints on international trade of animal products. Extensive viral population diversity and rapid, continuous mutation of circulating FMD viruses (FMDVs) pose significant obstacles to the control and ultimate eradication of this important transboundary pathogen. The current study investigated mechanisms contributing to within-host evolution of FMDV in a natural host species (cattle). Specifically, vaccinated and non-vaccinated cattle were infected with FMDV under controlled, experimental conditions and subsequently sampled for up to 35 days to monitor viral genomic changes as related to phases of disease and experimental cohorts. Consensus-level genomic changes across the entire FMDV coding region were characterized through three previously defined stages of infection: early, transitional, and persistent. The overall conclusion was that viral evolution occurred via a combination of two mechanisms: emergence of full-genomic minority haplotypes from within the inoculum super-swarm, and concurrent continuous point mutations. Phylogenetic analysis indicated that individuals were infected with multiple distinct haplogroups that were pre-existent within the ancestral inoculum used to infect all animals. Multiple shifts of dominant viral haplotype took place during the early and transitional phases of infection, whereas few shifts occurred during persistent infection. Overall, this work suggests that the establishment of the carrier state is not associated with specific viral genomic characteristics. These insights into FMDV population dynamics have important implications for virus sampling methodology and molecular epidemiology.
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Affiliation(s)
- Jonathan Arzt
- Foreign Animal Disease Research Unit, Plum Island Animal Disease Center, ARS, USDA, Greenport, NY, United States of America
| | - Ian Fish
- Foreign Animal Disease Research Unit, Plum Island Animal Disease Center, ARS, USDA, Greenport, NY, United States of America
- Oak Ridge Institute for Science and Education, PIADC Research Participation Program, Oak Ridge, TN, United States of America
| | - Steven J Pauszek
- Foreign Animal Disease Research Unit, Plum Island Animal Disease Center, ARS, USDA, Greenport, NY, United States of America
| | - Shannon L Johnson
- Los Alamos National Laboratory, Los Alamos, NM, United States of America
| | - Patrick S Chain
- Los Alamos National Laboratory, Los Alamos, NM, United States of America
| | - Devendra K Rai
- Foreign Animal Disease Research Unit, Plum Island Animal Disease Center, ARS, USDA, Greenport, NY, United States of America
- Department of Veterinary Population Medicine, University of Minnesota, St Paul, MN, United States of America
| | - Elizabeth Rieder
- Foreign Animal Disease Research Unit, Plum Island Animal Disease Center, ARS, USDA, Greenport, NY, United States of America
| | - Tony L Goldberg
- Department of Pathobiological Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, WI, United States of America
| | - Luis L Rodriguez
- Foreign Animal Disease Research Unit, Plum Island Animal Disease Center, ARS, USDA, Greenport, NY, United States of America
| | - Carolina Stenfeldt
- Foreign Animal Disease Research Unit, Plum Island Animal Disease Center, ARS, USDA, Greenport, NY, United States of America
- Department of Veterinary Population Medicine, University of Minnesota, St Paul, MN, United States of America
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14
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A replication-competent foot-and-mouth disease virus expressing a luciferase reporter. J Virol Methods 2017; 247:38-44. [PMID: 28532601 PMCID: PMC5490781 DOI: 10.1016/j.jviromet.2017.05.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Revised: 05/16/2017] [Accepted: 05/16/2017] [Indexed: 12/18/2022]
Abstract
We have generated a replication-competent foot-and-mouth disease virus expressing Nanoluciferase, designated as Nano-FMDV. Nano-FMDV is genetically stable. The replication of Nano-FMDV can be monitored by bioluminescent methods. This reporter virus has potential applications in real-time monitoring of FMDV infection in vitro and in vivo, and in screening of antivirals and antibodies.
Bioluminescence is a powerful tool in the study of viral infection both in vivo and in vitro. Foot-and-mouth disease virus (FMDV) has a small RNA genome with a limited tolerance to foreign RNA entities. There has been no success in making a reporter FMDV expressing a luciferase in infected cell culture supernatants. We report here for the first time a replication-competent FMDV encoding Nanoluciferase, named as Nano-FMDV. Nano-FMDV is genetically stable during serial passages in cells and exhibits growth kinetics and plaque morphology similar to its parental virus. There are applications for the use of Nano-FMDV such as real-time monitoring of FMDV replication in vitro and in vivo.
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