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Hanafy M, Hansen C, Phanse Y, Wu CW, Nelson K, Aschenbroich SA, Talaat AM. Characterization of early immune responses elicited by live and inactivated vaccines against Johne's disease in goats. Front Vet Sci 2023; 9:1046704. [PMID: 36699320 PMCID: PMC9868903 DOI: 10.3389/fvets.2022.1046704] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Accepted: 12/20/2022] [Indexed: 01/12/2023] Open
Abstract
Mycobacterium avium subspecies paratuberculosis (M. paratuberculosis) is the causative agent of Johne's disease, a chronic debilitating condition affecting ruminants causing significant economic losses to the dairy industry. Available inactivated vaccines are not effective in controlling the disease and vaccinated animals can continue to infect newly born calves. Recently, we have shown that a live-attenuated vaccine candidate (pgsN) is protective in goats and calves following challenge with virulent strains of M. paratuberculosis. To decipher the dynamics of the immune responses elicited by both live-attenuated and inactivated vaccines, we analyzed key immunological parameters of goats immunized through different routes when a marker-less pgsN vaccine was used. Within a few weeks, the inactivated vaccine triggered the formation of granulomas both at the site of inoculation and in regional lymph nodes, that increased in size over time and persisted until the end of the experiment. In contrast, granulomas induced by the pgsN vaccine were small and subsided during the study. Interestingly, in this vaccine group, histology demonstrated an initial abundance of intra-histiocytic mycobacterial bacilli at the site of inoculation, with recruitment of very minimal T lymphocytes to poorly organized granulomas. Over time, granulomas became more organized, with recruitment of greater numbers of T and B lymphocytes, which coincided with a lack of mycobacteria. For the inactivated vaccine group, mycobacterial bacilli were identified extracellularly within the center of caseating granulomas, with relatively equal proportions of B- and T-lymphocytes maintained across both early and late times. Despite the differences in granuloma-specific lymphocyte recruitment, markers for cell-mediated immunity (e.g., IFN-γ release) were robust in both injected pgsN and inactivated vaccine groups. In contrast, the intranasal live-attenuated vaccine did not elicit any reaction at site of inoculation, nor cell-mediated immune responses. Finally, 80% of animals in the inactivated vaccine group significantly reacted to purified protein derivatives from M. bovis, while reactivity was detected in only 20% of animals receiving pgsN vaccine, suggesting a higher level of cross reactivity for bovine tuberculosis when inactivated vaccine is used. Overall, these results depict the cellular recruitment strategies driving immune responses elicited by both live-attenuated and inactivated vaccines that target Johne's disease.
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Affiliation(s)
- Mostafa Hanafy
- Department of Pathobiological Sciences, School of Veterinary Medicine, University of Wisconsin, Madison, WI, United States,Department of Microbiology and Immunology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - Chungyi Hansen
- Department of Pathobiological Sciences, School of Veterinary Medicine, University of Wisconsin, Madison, WI, United States
| | | | - Chia-wei Wu
- Department of Pathobiological Sciences, School of Veterinary Medicine, University of Wisconsin, Madison, WI, United States
| | - Kathryn Nelson
- Research Animal Resources Center, University of Wisconsin-Madison, Madison, WI, United States
| | - Sophie A. Aschenbroich
- Department of Pathobiological Sciences, School of Veterinary Medicine, University of Wisconsin, Madison, WI, United States,Sophie A. Aschenbroich ✉
| | - Adel M. Talaat
- Department of Pathobiological Sciences, School of Veterinary Medicine, University of Wisconsin, Madison, WI, United States,Pan Genome Systems, Madison, WI, United States,*Correspondence: Adel M. Talaat ✉
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Park HT, Lee SM, Ko S, Kim S, Park HE, Shin MK, Kim D, Yoo HS. Delineating transcriptional crosstalk between Mycobacterium avium subsp. paratuberculosis and human THP-1 cells at the early stage of infection via dual RNA-seq analysis. Vet Res 2022; 53:71. [PMID: 36100945 PMCID: PMC9469519 DOI: 10.1186/s13567-022-01089-y] [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: 06/01/2022] [Accepted: 08/13/2022] [Indexed: 12/02/2022] Open
Abstract
Mycobacterium avium subsp. paratuberculosis (MAP) is the causative agent of Johne’s disease, a chronic debilitating disease in ruminants. To control this disease, it is crucial to understand immune evasion and the mechanism of persistence by analyzing the early phase interplays of the intracellular pathogens and their hosts. In the present study, host–pathogen interactions at the transcriptomic level were investigated in an in vitro macrophage infection model. When differentiated human THP-1 cells were infected with MAP, the expression of various genes associated with stress responses and metabolism was altered in both host and MAP at 3 h post-infection. MAP upregulates stress-responsive global gene regulators, such as two-component systems and sigma factors, in response to oxidative and cell wall stress. Downstream genes involved in type VII secretion systems, cell wall synthesis (polyketide biosynthesis proteins), and iron uptake were changed in response to the intracellular environment of macrophages. On the host side, upregulation of inflammatory cytokine genes was observed along with pattern recognition receptor genes. Notably, alterations in gene sets involved in arginine metabolism were observed in both the host and MAP, along with significant downregulation of NOS2 expression. These observations suggest that the utilization of metabolites such as arginine by intracellular MAP might affect host NO production. Our dual RNA-seq data can provide novel insights by capturing the global transcriptome with higher resolution, especially in MAP, thus enabling a more systematic understanding of host–pathogen interactions.
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Affiliation(s)
- Hong-Tae Park
- Department of Infectious Diseases, College of Veterinary Medicine, Seoul National University, Seoul, 08826, Korea
| | - Sang-Mok Lee
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Korea
| | - Seyoung Ko
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Korea
| | - Suji Kim
- Department of Infectious Diseases, College of Veterinary Medicine, Seoul National University, Seoul, 08826, Korea
| | - Hyun-Eui Park
- Department of Microbiology, College of Medicine, Research Institute of Life Science, Gyeongsang National University, Jinju, 52828, Korea
| | - Min-Kyoung Shin
- Department of Microbiology, College of Medicine, Research Institute of Life Science, Gyeongsang National University, Jinju, 52828, Korea
| | - Donghyuk Kim
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Korea.
| | - Han Sang Yoo
- Department of Infectious Diseases, College of Veterinary Medicine, Seoul National University, Seoul, 08826, Korea.
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Ssekitoleko J, Ojok L, Abd El Wahed A, Erume J, Amanzada A, Eltayeb E, Eltom KH, Okuni JB. Mycobacterium avium subsp. paratuberculosis Virulence: A Review. Microorganisms 2021; 9:2623. [PMID: 34946224 PMCID: PMC8707695 DOI: 10.3390/microorganisms9122623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 12/08/2021] [Accepted: 12/16/2021] [Indexed: 11/17/2022] Open
Abstract
To propose a solution for control of Mycobacterium avium subsp. paratuberculosis (MAP) infections in animals as well as in humans, and develop effective prevention, diagnostic and treatment strategies, it is essential to understand the molecular mechanisms of MAP pathogenesis. In the present review, we discuss the mechanisms utilised by MAP to overcome the host defense system to achieve the virulence status. Putative MAP virulence genes are mentioned and their probable roles in view of other mycobacteria are discussed. This review provides information on MAP strain diversity, putative MAP virulence factors and highlights the knowledge gaps regarding MAP virulence mechanisms that may be important in control and prevention of paratuberculosis.
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Affiliation(s)
- Judah Ssekitoleko
- College of Veterinary Medicine, Animal Resources and Biosecurity, Makerere University, Kampala P. O. Box 7062, Uganda; (J.S.); (L.O.); (J.E.)
- Department of Livestock Health Research, Rwebitaba Zonal Agricultural Research and Development Institute, National Agricultural Research Organisation, Entebbe P. O. Box 295, Uganda
| | - Lonzy Ojok
- College of Veterinary Medicine, Animal Resources and Biosecurity, Makerere University, Kampala P. O. Box 7062, Uganda; (J.S.); (L.O.); (J.E.)
- Department of Pathology, Faculty of Medicine, Gulu University, Gulu P. O. Box 166, Uganda
| | - Ahmed Abd El Wahed
- Institute of Animal Hygiene and Veterinary Public Health, Leipzig University, D-04103 Leipzig, Germany
| | - Joseph Erume
- College of Veterinary Medicine, Animal Resources and Biosecurity, Makerere University, Kampala P. O. Box 7062, Uganda; (J.S.); (L.O.); (J.E.)
| | - Ahmad Amanzada
- Department of Gastroenterology and Gastrointestinal Oncology, University Medical Centre Goettingen, D-37075 Goettingen, Germany;
| | - ElSagad Eltayeb
- Ibn Sina Specialised Hospital, Mohammed Najeeb St., Khartoum 11560, Sudan;
- Faculty of Medicine, Al Neelain University, 52nd St., Khartoum 11112, Sudan
| | - Kamal H. Eltom
- Unit of Animal Health and Safety of Animal Products, Institute for Studies and Promotion of Animal Exports, University of Khartoum, Shambat, Khartoum North 13314, Sudan;
| | - Julius Boniface Okuni
- College of Veterinary Medicine, Animal Resources and Biosecurity, Makerere University, Kampala P. O. Box 7062, Uganda; (J.S.); (L.O.); (J.E.)
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A Protective Vaccine against Johne's Disease in Cattle. Microorganisms 2020; 8:microorganisms8091427. [PMID: 32957508 PMCID: PMC7564561 DOI: 10.3390/microorganisms8091427] [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: 08/03/2020] [Revised: 09/12/2020] [Accepted: 09/15/2020] [Indexed: 01/16/2023] Open
Abstract
Johne’s disease (JD) caused by Mycobacterium avium subsp. paratuberculosis (M. paratuberculosis) is a chronic infection characterized by the development of granulomatous enteritis in wild and domesticated ruminants. It is one of the most significant livestock diseases not only in the USA but also globally, accounting for USD 200–500 million losses annually for the USA alone with potential link to cases of Crohn’s disease in humans. Developing safe and protective vaccines is of a paramount importance for JD control in dairy cows. The current study evaluated the safety, immunity and protective efficacy of a novel live attenuated vaccine (LAV) candidate with and without an adjuvant in comparison to an inactivated vaccine. Results indicated that the LAV, irrespective of the adjuvant presence, induced robust T cell immune responses indicated by proinflammatory cytokine production such as IFN-γ, IFN-α, TNF-α and IL-17 as well as strong response to intradermal skin test against M. paratuberculosis antigens. Furthermore, the LAV was safe with minimal tissue pathology. Finally, calves vaccinated with adjuvanted LAV did not shed M. paratuberculosis post-challenge, a much-desired characteristic of an effective vaccine against JD. Together, this data suggests a strong potential of testing LAV in field trials to curb JD in dairy herds.
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van den Esker MH, Koets AP. Application of Transcriptomics to Enhance Early Diagnostics of Mycobacterial Infections, with an Emphasis on Mycobacterium avium ssp. paratuberculosis. Vet Sci 2019; 6:vetsci6030059. [PMID: 31247942 PMCID: PMC6789504 DOI: 10.3390/vetsci6030059] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 06/14/2019] [Accepted: 06/19/2019] [Indexed: 12/18/2022] Open
Abstract
Mycobacteria cause a wide variety of disease in human and animals. Species that infect ruminants include M. bovis and M. avium ssp. paratuberculosis (MAP). MAP is the causative agent of Johne’s disease in ruminants, which is a chronic granulomatous enteric infection that leads to severe economic losses worldwide. Characteristic of MAP infection is the long, latent phase in which intermittent shedding can take place, while diagnostic tests are unable to reliably detect an infection in this stage. This leads to unnoticed dissemination within herds and the presence of many undetected, silent carriers, which makes the eradication of Johne’s disease difficult. To improve the control of MAP infection, research is aimed at improving early diagnosis. Transcriptomic approaches can be applied to characterize host-pathogen interactions during infection, and to develop novel biomarkers using transcriptional profiles. Studies have focused on the identification of specific RNAs that are expressed in different infection stages, which will assist in the development and clinical implementation of early diagnostic tests.
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Affiliation(s)
- Marielle H van den Esker
- Department of Bacteriology and Epidemiology, Wageningen Bioveterinary Research, 8200 AB Lelystad, The Netherlands
| | - Ad P Koets
- Department of Bacteriology and Epidemiology, Wageningen Bioveterinary Research, 8200 AB Lelystad, The Netherlands.
- Department of Farm Animal Health, Faculty of Veterinary Medicine, Utrecht University, 3508 TD Utrecht, The Netherlands.
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Protection efficacy of Argentinian isolates of Mycobacterium avium subsp. paratuberculosis with different genotypes and virulence in a murine model. Res Vet Sci 2018; 121:4-11. [PMID: 30300853 DOI: 10.1016/j.rvsc.2018.09.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Revised: 09/27/2018] [Accepted: 09/30/2018] [Indexed: 12/22/2022]
Abstract
Paratuberculosis is a chronic disease caused by Mycobacterium avium subsp. paratuberculosis (Map). The disease causes economic losses and, therefore, it is imperative to follow proper control strategies, which should include an effective vaccine. Several strategies have assessed the virulence and immune response of Map strains that could be used as a vaccine. This study evaluates the degree of virulence, immune response, and protection of Argentinian strains of Map with different genotype in a murine model. Four local isolates (Cattle type) with different genotypes (analyzed by MIRU-VNTR and SSRs) were selected and evaluated in a virulence assay in BALB/c mice. This assay allowed us to differentiate virulent and low-virulence Map strains. The less virulent strains (1543/481 and A162) failed to induce a significant production of the proinflammatory cytokine IFNg, whereas the virulent strain 6611 established infection along with a proinflammatory immune response. On the other hand, the virulent strain 1347/498 was efficient in establishing a persistent infection, but failed to promote an important Th1 response compared with 6611 at the evaluated time. We selected the low-virulence strain 1543/498 as a live vaccine and the virulent strain 6611 as a live and inactivated vaccine in a protection assay in mice. Strain 1543/481 failed to protect the animals from challenge, whereas strain 6611, in its live and inactivated form, significantly reduced the CFUs count in the infected mice, although they had different immunological response profiles. The inactivated virulent strain 6611 is a potential vaccine candidate against paratuberculosis to be tested in cattle.
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Rathnaiah G, Zinniel DK, Bannantine JP, Stabel JR, Gröhn YT, Collins MT, Barletta RG. Pathogenesis, Molecular Genetics, and Genomics of Mycobacterium avium subsp. paratuberculosis, the Etiologic Agent of Johne's Disease. Front Vet Sci 2017; 4:187. [PMID: 29164142 PMCID: PMC5681481 DOI: 10.3389/fvets.2017.00187] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Accepted: 10/20/2017] [Indexed: 12/12/2022] Open
Abstract
Mycobacterium avium subsp. paratuberculosis (MAP) is the etiologic agent of Johne's disease in ruminants causing chronic diarrhea, malnutrition, and muscular wasting. Neonates and young animals are infected primarily by the fecal-oral route. MAP attaches to, translocates via the intestinal mucosa, and is phagocytosed by macrophages. The ensuing host cellular immune response leads to granulomatous enteritis characterized by a thick and corrugated intestinal wall. We review various tissue culture systems, ileal loops, and mice, goats, and cattle used to study MAP pathogenesis. MAP can be detected in clinical samples by microscopy, culturing, PCR, and an enzyme-linked immunosorbent assay. There are commercial vaccines that reduce clinical disease and shedding, unfortunately, their efficacies are limited and may not engender long-term protective immunity. Moreover, the potential linkage with Crohn's disease and other human diseases makes MAP a concern as a zoonotic pathogen. Potential therapies with anti-mycobacterial agents are also discussed. The completion of the MAP K-10 genome sequence has greatly improved our understanding of MAP pathogenesis. The analysis of this sequence has identified a wide range of gene functions involved in virulence, lipid metabolism, transcriptional regulation, and main metabolic pathways. We also review the transposons utilized to generate random transposon mutant libraries and the recent advances in the post-genomic era. This includes the generation and characterization of allelic exchange mutants, transcriptomic analysis, transposon mutant banks analysis, new efforts to generate comprehensive mutant libraries, and the application of transposon site hybridization mutagenesis and transposon sequencing for global analysis of the MAP genome. Further analysis of candidate vaccine strains development is also provided with critical discussions on their benefits and shortcomings, and strategies to develop a highly efficacious live-attenuated vaccine capable of differentiating infected from vaccinated animals.
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Affiliation(s)
- Govardhan Rathnaiah
- School of Veterinary Medicine and Biomedical Sciences, University of Nebraska, Lincoln, NE, United States
| | - Denise K. Zinniel
- School of Veterinary Medicine and Biomedical Sciences, University of Nebraska, Lincoln, NE, United States
| | - John P. Bannantine
- Infectious Bacterial Diseases, National Animal Disease Center, USDA-ARS, Ames, IA, United States
| | - Judith R. Stabel
- Infectious Bacterial Diseases, National Animal Disease Center, USDA-ARS, Ames, IA, United States
| | - Yrjö T. Gröhn
- Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY, United States
| | - Michael T. Collins
- Pathobiological Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, WI, United States
| | - Raúl G. Barletta
- School of Veterinary Medicine and Biomedical Sciences, University of Nebraska, Lincoln, NE, United States
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Ruangkiattikul N, Nerlich A, Abdissa K, Lienenklaus S, Suwandi A, Janze N, Laarmann K, Spanier J, Kalinke U, Weiss S, Goethe R. cGAS-STING-TBK1-IRF3/7 induced interferon-β contributes to the clearing of non tuberculous mycobacterial infection in mice. Virulence 2017; 8:1303-1315. [PMID: 28422568 DOI: 10.1080/21505594.2017.1321191] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Abstract
Type I interferons (IFN-I), such as IFN-α and IFN-β are important messengers in the host response against bacterial infections. Knowledge about the role of IFN-I in infections by nontuberculous mycobacteria (NTM) is limited. Here we show that macrophages infected with pathogens of the Mycobacterium avium complex produced significantly lower amounts of IFN-β than macrophages infected with the opportunistic pathogen M. smegmatis. To dissect the molecular mechanisms of this phenomenon, we focused on the obligate pathogen Mycobacterium avium ssp paratuberculosis (MAP) and the opportunistic M. smegmatis. Viability of both bacteria was required for induction of IFN-β in macrophages. Both bacteria induced IFN-β via the cGAS-STING-TBK1-IRF3/7-pathway of IFN-β activation. Stronger phosphorylation of TBK1 and higher amounts of extracellular bacterial DNA in the macrophage cytosol were found in M. smegmatis infected macrophages than in MAP infected macrophages. After intraperitoneal infection of mice, a strong Ifnb induction by M. smegmatis correlated with clearance of the bacteria. In contrast, MAP only induced weak Ifnb expression which correlated with bacterial persistence and increased number of granulomas in the liver. In mice lacking the type I interferon receptor we observed improved survival of M. smegmatis while survival of MAP was similar to that in wildtype mice. On the other hand, treatment of MAP infected wildtype mice with the IFN-I inducer poly(I:C) or recombinant IFN-β impaired the survival of MAP. This indicates an essential role of IFN-I in clearing infections by MAP and M. smegmatis. The expression level of IFN-I is decisive for transient versus persistent NTM infection.
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Affiliation(s)
| | - Andreas Nerlich
- a Institute for Microbiology , University of Veterinary Medicine Hannover , Hannover , Germany
| | - Ketema Abdissa
- a Institute for Microbiology , University of Veterinary Medicine Hannover , Hannover , Germany.,b Department of Molecular Immunology , Helmholtz Centre for Infection Research , Braunschweig , Germany
| | - Stefan Lienenklaus
- b Department of Molecular Immunology , Helmholtz Centre for Infection Research , Braunschweig , Germany
| | - Abdulhadi Suwandi
- b Department of Molecular Immunology , Helmholtz Centre for Infection Research , Braunschweig , Germany
| | - Nina Janze
- a Institute for Microbiology , University of Veterinary Medicine Hannover , Hannover , Germany
| | - Kristin Laarmann
- a Institute for Microbiology , University of Veterinary Medicine Hannover , Hannover , Germany
| | - Julia Spanier
- c Institute for Experimental Infection Research, TWINCORE Centre for Experimental and Clinical Infection Research , a joint venture between the Helmholtz Centre for Infection Research and the Hannover Medical School , Hannover , Germany
| | - Ulrich Kalinke
- c Institute for Experimental Infection Research, TWINCORE Centre for Experimental and Clinical Infection Research , a joint venture between the Helmholtz Centre for Infection Research and the Hannover Medical School , Hannover , Germany
| | - Siegfried Weiss
- b Department of Molecular Immunology , Helmholtz Centre for Infection Research , Braunschweig , Germany.,d Institute of Immunology , Hannover Medical School , Hannover , Germany
| | - Ralph Goethe
- a Institute for Microbiology , University of Veterinary Medicine Hannover , Hannover , Germany
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Superior Protection from Live-Attenuated Vaccines Directed against Johne's Disease. CLINICAL AND VACCINE IMMUNOLOGY : CVI 2017; 24:CVI.00478-16. [PMID: 27806993 DOI: 10.1128/cvi.00478-16] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Accepted: 10/27/2016] [Indexed: 12/27/2022]
Abstract
Mycobacterium avium subsp. paratuberculosis (M. paratuberculosis) is the etiological agent of Johne's disease in ruminants. Johne's disease is an important enteric infection causing large economic losses associated with infected herds. In an attempt to fight this infection, we created two novel live-attenuated vaccine candidates with mutations in sigH and lipN (pgsH and pgsN, respectively). Earlier reports in mice suggested these vaccines are promising candidates to fight Johne's disease in ruminants. In this study, we tested the performances of the two constructs as vaccine candidates using the goat model of Johne's disease. Both vaccines appeared to provide significant immunity to goats against challenge from wild-type M. paratuberculosis The pgsH and pgsN constructs showed a significant reduction in histopathological lesions and tissue colonization compared to nonvaccinated goats and those vaccinated with an inactivated vaccine. Unlike the inactivated vaccine, the pgsN construct was able to eliminate fecal shedding from challenged animals, a feature that is highly desirable to control Johne's disease in infected herds. Furthermore, strong initial cell-mediated immune responses were elicited in goats vaccinated with pgsN that were not demonstrated in other vaccine groups. Overall, the results indicate the potential use of live-attenuated vaccines to control intracellular pathogens, including M. paratuberculosis, and warrant further testing in cattle, the main target for Johne's disease control programs.
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Park HT, Yoo HS. Development of vaccines to Mycobacterium avium subsp. paratuberculosis infection. Clin Exp Vaccine Res 2016; 5:108-16. [PMID: 27489800 PMCID: PMC4969274 DOI: 10.7774/cevr.2016.5.2.108] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Revised: 05/10/2016] [Accepted: 05/10/2016] [Indexed: 12/27/2022] Open
Abstract
Johne's disease or paratuberculosis is a chronic debilitating disease in ruminants caused by Mycobacterium avium subsp. paratuberculosis (MAP). The disease causes significant economic losses in livestock industries worldwide. There are no effective control measures to eradicate the disease because there are no appropriate diagnostic methods to detect subclinically infected animals. Therefore, it is very difficult to control the disease using only test and cull strategies. Vaccination against paratuberculosis has been considered as an alternative strategy to control the disease when combined with management interventions. Understanding host-pathogen interactions is extremely important to development of vaccines. It has long been known that Th1-mediated cellular immune responses are play a crucial role in protection against MAP infection. However, recent studies suggested that innate immune responses are more closely related to protective effects than adaptive immunity. Based on this understanding, several attempts have been made to develop vaccines against paratuberculosis. A variety of ideas for designing novel vaccines have emerged, and the tests of the efficacy of these vaccines are conducted constantly. However, no effective vaccines are commercially available. In this study, studies of the development of vaccines for MAP were reviewed and summarized.
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Affiliation(s)
- Hong-Tae Park
- Department of Infectious Diseases, College of Veterinary Medicine, Seoul National University, Seoul, Korea
| | - Han Sang Yoo
- Department of Infectious Diseases, College of Veterinary Medicine, Seoul National University, Seoul, Korea.; Institute of Green Bio Science and Technology, Seoul National University, Pyeongchang, Korea
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Ghosh P, Shippy DC, Talaat AM. Superior protection elicited by live-attenuated vaccines in the murine model of paratuberculosis. Vaccine 2015; 33:7262-7270. [DOI: 10.1016/j.vaccine.2015.10.116] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Revised: 10/21/2015] [Accepted: 10/27/2015] [Indexed: 10/22/2022]
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Bannantine JP, Talaat AM. Controlling Johne's disease: vaccination is the way forward. Front Cell Infect Microbiol 2015; 5:2. [PMID: 25653925 PMCID: PMC4301021 DOI: 10.3389/fcimb.2015.00002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2014] [Accepted: 01/05/2015] [Indexed: 01/29/2023] Open
Affiliation(s)
- John P Bannantine
- Infectious Bacterial Diseases, National Animal Disease Center, United States Department of Agriculture - Agricultural Research Service Ames, IA, USA
| | - Adel M Talaat
- Department of Pathobiological Sciences, University of Wisconsin Madison, WI, USA
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