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de Pinho RB, Barbosa TN, Dall'Agno L, da Rocha Fonseca B, Bezerra FSB, Sousa FSS, Seixas FK, Collares T, Borsuk S. Mycobacterium bovis BCG expressing the proteins CP40 or CP09720 of Corynebacterium pseudotuberculosis promotes protection in mice after challenge. Vaccine 2024; 42:33-39. [PMID: 38044246 DOI: 10.1016/j.vaccine.2023.11.049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Accepted: 11/23/2023] [Indexed: 12/05/2023]
Abstract
In this study, we assessed the survival and immune response of mice vaccinated with recombinant Mycobacterium bovis BCG Pasteur that expressed the CP40 or CP09720 proteins after the mice were challenged with a C. pseudotuberculosis MIC-6 virulent strain. Six groups of mice (n = 10 mice per group) were immunised with a sterile 0.9% saline solution (G1), 106 CFU of M. bovis BCG Pasteur (G2), 106 CFU of M. bovis BCG/cp40 (G3), 106 CFU of M. bovis BCG/cp09720 (G4), M. bovis BCG/cp40 boosted with rCP40 (G5), and M. bovis BCG/cp09720 boosted with rCP09720 (G6). The highest survival rate of 90% was observed in the G5 group, followed by 80% in the G6 group and 70% in the G3 and G4 groups. Moreover, a significantly greater induction of IFN-γ and IL-10 was found in the G3 group and higher IL-17 levels were recorded in the G5 group compared to their levels in the control group (G1) (p < 0.05). A specific humoral immune response (total IgG) was found in the G5 and G6 groups on day 42 compared to the level of response in the G1 group. These results indicated that the vector vaccine elicited significantly greater survival of mice in all experimental groups after a strong virulent challenge and induced a strong immune response.
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Affiliation(s)
- Rodrigo Barros de Pinho
- Laboratório de Biotecnologia Infecto-Parasitária, Centro de Desenvolvimento Tecnológico, Universidade Federal de Pelotas, Pelotas, Brazil
| | - Tallyson Nogueira Barbosa
- Laboratório de Biotecnologia Infecto-Parasitária, Centro de Desenvolvimento Tecnológico, Universidade Federal de Pelotas, Pelotas, Brazil
| | - Laura Dall'Agno
- Laboratório de Biotecnologia Infecto-Parasitária, Centro de Desenvolvimento Tecnológico, Universidade Federal de Pelotas, Pelotas, Brazil
| | - Bárbara da Rocha Fonseca
- Laboratório de Biotecnologia Infecto-Parasitária, Centro de Desenvolvimento Tecnológico, Universidade Federal de Pelotas, Pelotas, Brazil
| | - Francisco Silvestre Brilhante Bezerra
- Laboratório de Biotecnologia Aplicada a Doenças Infecto-Parasitárias, Centro de Ciências Biológicas e da Saúde, Universidade Rural do Semiárido, Mossoró, Brazil
| | - Fernanda Severo Sabedra Sousa
- Laboratório de Biotecnologia do Câncer, Centro de Desenvolvimento Tecnológico, Universidade Federal de Pelotas, Pelotas, Brazil
| | - Fabiana Kommling Seixas
- Laboratório de Biotecnologia do Câncer, Centro de Desenvolvimento Tecnológico, Universidade Federal de Pelotas, Pelotas, Brazil
| | - Tiago Collares
- Laboratório de Biotecnologia do Câncer, Centro de Desenvolvimento Tecnológico, Universidade Federal de Pelotas, Pelotas, Brazil
| | - Sibele Borsuk
- Laboratório de Biotecnologia Infecto-Parasitária, Centro de Desenvolvimento Tecnológico, Universidade Federal de Pelotas, Pelotas, Brazil.
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Rodríguez-Domínguez MC, Montes-de-Oca-Jiménez R, Vázquez-Chagoyán JC, Rivadeneira-Barreiro PE, Zambrano-Rodríguez PC, Ruiz-Riva-Palacio ME, Gutiérrez-Castillo ADC, de-Castro-Soares S, Vieyra-Reyes P, Arteaga-Troncoso G. Bioinformatic Approach of B and T Cell Epitopes of PLD and CP40 Proteins of Corynebacterium pseudotuberculosis ovis Mexican Isolate 2J-L towards a Peptide-Based Vaccine. Int J Mol Sci 2023; 25:270. [PMID: 38203441 PMCID: PMC10778833 DOI: 10.3390/ijms25010270] [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: 10/19/2023] [Revised: 12/08/2023] [Accepted: 12/10/2023] [Indexed: 01/12/2024] Open
Abstract
Mapping B and T cell epitopes constitutes an important action for peptide vaccine design. PLD and CP40 virulence factors of Corynebacterium pseudotuberculosis biovar ovis, a causal agent of Caseous Lymphadenitis, have been evaluated in a murine model as good candidates for vaccine development. Therefore, the goal of this work was to in silico analyze B and T cell epitopes of the PLD and CP40 proteins of a Mexican isolate of Corynebacterium pseudotuberculosis ovis. The Immune Epitope Data Base and Resource website was employed to predict the linear and conformational B-cell, T CD4+, and T CD8+ epitopes of PLD and CP40 proteins of Corynebacterium pseudotuberculosis ovis Mexican strain 2J-L. Fifty B cell epitopes for PLD 2J-L and forty-seven for CP40 2J-L were estimated. In addition, T CD4+ and CD8+ cell epitopes were predicted for PLD 2J-L (MHC I:16 epitopes, MHC II:10 epitopes) and CP40 2J-L (MHC I: 15 epitopes, MHC II: 13 epitopes). This study provides epitopes, paying particular attention to sequences selected by different predictor programs and overlap sequences as B and T cell epitopes. PLD 2J-L and CP40 2J-L protein epitopes may aid in the design of a promising peptide-based vaccine against Caseous Lymphadenitis in Mexico.
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Affiliation(s)
- Maria Carla Rodríguez-Domínguez
- Research and Advanced Studies in Animal Health Center, Faculty of Veterinary Medicine and Zootechnics, Autonomy University of the State of Mexico, Km 15.5 Toluca Pan-American Highway Atlacomulco, Toluca C.P. 50200, State of Mexico, Mexico; (M.C.R.-D.); (J.C.V.-C.); (A.d.C.G.-C.); (P.V.-R.)
| | - Roberto Montes-de-Oca-Jiménez
- Research and Advanced Studies in Animal Health Center, Faculty of Veterinary Medicine and Zootechnics, Autonomy University of the State of Mexico, Km 15.5 Toluca Pan-American Highway Atlacomulco, Toluca C.P. 50200, State of Mexico, Mexico; (M.C.R.-D.); (J.C.V.-C.); (A.d.C.G.-C.); (P.V.-R.)
- Sor Juana Inés de la Cruz School, Autonomy University of the State of Mexico- AMECAMECA, Amecameca de Juarez C.P. 56900, State of Mexico, Mexico;
| | - Juan Carlos Vázquez-Chagoyán
- Research and Advanced Studies in Animal Health Center, Faculty of Veterinary Medicine and Zootechnics, Autonomy University of the State of Mexico, Km 15.5 Toluca Pan-American Highway Atlacomulco, Toluca C.P. 50200, State of Mexico, Mexico; (M.C.R.-D.); (J.C.V.-C.); (A.d.C.G.-C.); (P.V.-R.)
| | - Pilar Eliana Rivadeneira-Barreiro
- Department of Veterinary Medicine, Faculty of Veterinary Sciences, Technical University of Manabí, Urbina Avenue, Portoviejo C.P. 130105, Portoviejo, Ecuador; (P.E.R.-B.); (P.C.Z.-R.)
| | - Pablo Cleomenes Zambrano-Rodríguez
- Department of Veterinary Medicine, Faculty of Veterinary Sciences, Technical University of Manabí, Urbina Avenue, Portoviejo C.P. 130105, Portoviejo, Ecuador; (P.E.R.-B.); (P.C.Z.-R.)
| | - Martha Elba Ruiz-Riva-Palacio
- Sor Juana Inés de la Cruz School, Autonomy University of the State of Mexico- AMECAMECA, Amecameca de Juarez C.P. 56900, State of Mexico, Mexico;
| | - Adriana del Carmen Gutiérrez-Castillo
- Research and Advanced Studies in Animal Health Center, Faculty of Veterinary Medicine and Zootechnics, Autonomy University of the State of Mexico, Km 15.5 Toluca Pan-American Highway Atlacomulco, Toluca C.P. 50200, State of Mexico, Mexico; (M.C.R.-D.); (J.C.V.-C.); (A.d.C.G.-C.); (P.V.-R.)
| | - Siomar de-Castro-Soares
- Department of Microbiology, Immunology and Parasitology, Federal University of Triângulo Mineiro, Av. Frei Paulino, 30-Nossa Sra. da Abadia, Uberaba C.P. 38025-180, Minas Gerais, Brazil;
| | - Patricia Vieyra-Reyes
- Research and Advanced Studies in Animal Health Center, Faculty of Veterinary Medicine and Zootechnics, Autonomy University of the State of Mexico, Km 15.5 Toluca Pan-American Highway Atlacomulco, Toluca C.P. 50200, State of Mexico, Mexico; (M.C.R.-D.); (J.C.V.-C.); (A.d.C.G.-C.); (P.V.-R.)
| | - Gabriel Arteaga-Troncoso
- Department of Cellular Biology and Development, National Institute of Perinatology, Lomas de Chapultepec IV Secc, Miguel Hidalgo, Mexico City C.P. 11000, Mexico;
- Military School of Health Officers, University of the Mexican Army and Air Force, SEDENA, Mexico City C.P. 11650, Mexico
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Evaluation of the Association of Recombinant Proteins NanH and PknG from Corynebacterium pseudotuberculosis Using Different Adjuvants as a Recombinant Vaccine in Mice. Vaccines (Basel) 2023; 11:vaccines11030519. [PMID: 36992103 DOI: 10.3390/vaccines11030519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 02/15/2023] [Accepted: 02/18/2023] [Indexed: 02/25/2023] Open
Abstract
Caseous lymphadenitis is a chronic contagious disease that causes economic losses worldwide. Treatments are ineffective, thus demonstrating the importance of vaccination. In this study, rNanH and rPknG proteins from Corynebacterium pseudotuberculosis were associated with saponin or aluminum hydroxide adjuvants. Three experimental groups (10 animals each) were immunized with sterile 0.9% saline solution (G1), rNanH + rPknG + Saponin (G2), rNanH + rPknG + Al(OH)3 (G3). The mice received two vaccine doses 21 days apart. Animals were challenged 21 days after the last immunization and evaluated for 50 days, with endpoint criteria applied when needed. The total IgG production levels of the experimental groups increased significantly on day 42 when compared to the control (p < 0.05). When tested against rNanH, G2 had a better rate of anti-rNanH antibodies compared to G3. In the anti-rPknG ELISA, the levels of total IgG, IgG1, and IgG2a antibodies were higher in G2. The vaccines generated partial protection, with 40% of the animals surviving the challenge. The association of recombinant NanH and PknG proteins led to promising protection rates in mice, and although using different adjuvants did not interfere with the survival rate, it influenced the immune response generated by the vaccine formulations.
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Barral TD, Kalil MA, Mariutti RB, Arni RK, Gismene C, Sousa FS, Collares T, Seixas FK, Borsuk S, Estrela-Lima A, Azevedo V, Meyer R, Portela RW. Immunoprophylactic properties of the Corynebacterium pseudotuberculosis-derived MBP:PLD:CP40 fusion protein. Appl Microbiol Biotechnol 2022; 106:8035-8051. [PMID: 36374330 PMCID: PMC9660185 DOI: 10.1007/s00253-022-12279-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 10/21/2022] [Accepted: 11/04/2022] [Indexed: 11/16/2022]
Abstract
Caseous lymphadenitis (CLA) is a disease that affects small ruminants, and the best way to prevent its spread on a herd is through immunoprophylaxis. Thus, we aimed to evaluate the MBP:PLD:CP40 fusion protein as a new CLA immunogen. The fusion protein was constructed by combining Corynebacterium pseudotuberculosis PLD and CP40 proteins with maltose-binding protein (MBP) as an intrinsic adjuvant. The antigenicity, allergenic potential, prediction of B epitopes, binding to MHC receptors, and docking on the Toll-Like 2 receptor were evaluated in silico. MBP:PLD:CP40 was expressed and purified. 40 BALB/c were divided into four groups (G1 - control, G2 - Saponin, G3 - MBP:PLD:CP40, and G4 - rPLD + rCP40). Total IgG, IgG1, and IgG2a were quantified, and the expressions of cytokines after splenocyte in vitro stimulation were assessed. Mice were challenged 42 days after the first immunization. The in silico analysis showed that MBP:PLD:CP40 has immunogenic potential, does not have allergic properties, and can dock on the TRL2 receptor. MBP:PLD:CP40 stimulated the production of IgG1 antibodies in a fivefold proportion to IgG2a, and TNF and IL-17 were significantly expressed in response to the antigenic stimuli. When rPLD and rCP40 were used together for immunization, they could induce IFN-γ and IL-12, but with no detectable antibody production. The G3 and G4 groups presented a survival of 57.14% and 42.86%, respectively, while the G1 and G2 mice were all dead 15 days after the challenge. MBP:PLD:CP40 partially protected the mice against C. pseudotuberculosis infection and can be considered a potential new CLA immunogen. KEY POINTS: • The fusion protein induced more IgG1 than IgG2a antibodies; • The fusion protein also induced the expression of the TNF and IL-17 cytokines; • Mice inoculated with MBP:PLD:CP40 presented a 57.14% survival.
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Affiliation(s)
- Thiago Doria Barral
- grid.8399.b0000 0004 0372 8259Laboratory of Immunology and Molecular Biology, Universidade Federal da Bahia, Avenida Reitor Miguel Calmon s/n, Salvador, Bahia State 40110-100 Brazil
| | - Mauricio Alcantara Kalil
- grid.8399.b0000 0004 0372 8259Laboratory of Immunology and Molecular Biology, Universidade Federal da Bahia, Avenida Reitor Miguel Calmon s/n, Salvador, Bahia State 40110-100 Brazil
| | - Ricardo Barros Mariutti
- grid.410543.70000 0001 2188 478XMultiuser Center for Biomolecular Innovation, Universidade Estadual Paulista, São José do Rio Preto, São Paulo State 15054-000 Brazil
| | - Raghuvir Krishnaswamy Arni
- grid.410543.70000 0001 2188 478XMultiuser Center for Biomolecular Innovation, Universidade Estadual Paulista, São José do Rio Preto, São Paulo State 15054-000 Brazil
| | - Carolina Gismene
- grid.410543.70000 0001 2188 478XMultiuser Center for Biomolecular Innovation, Universidade Estadual Paulista, São José do Rio Preto, São Paulo State 15054-000 Brazil
| | - Fernanda Severo Sousa
- grid.411221.50000 0001 2134 6519Center for Technological Development, Universidade Federal de Pelotas, Pelotas, Rio Grande do Sul State 96010-900 Brazil
| | - Tiago Collares
- grid.411221.50000 0001 2134 6519Center for Technological Development, Universidade Federal de Pelotas, Pelotas, Rio Grande do Sul State 96010-900 Brazil
| | - Fabiana Kommling Seixas
- grid.411221.50000 0001 2134 6519Center for Technological Development, Universidade Federal de Pelotas, Pelotas, Rio Grande do Sul State 96010-900 Brazil
| | - Sibele Borsuk
- grid.411221.50000 0001 2134 6519Center for Technological Development, Universidade Federal de Pelotas, Pelotas, Rio Grande do Sul State 96010-900 Brazil
| | - Alessandra Estrela-Lima
- grid.8399.b0000 0004 0372 8259Laboratory of Veterinary Pathology, School of Veterinary Medicine and Zootechnics, Universidade Federal da Bahia, Salvador, Bahia State 40110-100 Brazil
| | - Vasco Azevedo
- grid.8430.f0000 0001 2181 4888Laboratory of Molecular and Cellular Genetics, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais State 31270-901 Brazil
| | - Roberto Meyer
- grid.8399.b0000 0004 0372 8259Laboratory of Immunology and Molecular Biology, Universidade Federal da Bahia, Avenida Reitor Miguel Calmon s/n, Salvador, Bahia State 40110-100 Brazil
| | - Ricardo Wagner Portela
- grid.8399.b0000 0004 0372 8259Laboratory of Immunology and Molecular Biology, Universidade Federal da Bahia, Avenida Reitor Miguel Calmon s/n, Salvador, Bahia State 40110-100 Brazil
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de Pinho RB, de Oliveira Silva MT, Bezerra FSB, Borsuk S. Vaccines for caseous lymphadenitis: up-to-date and forward-looking strategies. Appl Microbiol Biotechnol 2021; 105:2287-2296. [PMID: 33651132 PMCID: PMC7923401 DOI: 10.1007/s00253-021-11191-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 02/12/2021] [Accepted: 02/17/2021] [Indexed: 11/30/2022]
Abstract
Caseous lymphadenitis (CLA) is an infectious chronic disease responsible for economic losses in sheep and goat breeding worldwide. CLA has no effective treatment, evidencing the vaccination schedule as the best control strategy. Although some commercial vaccines have been available, none of them provides total protection, which is sometimes insufficient and does not reach the same efficiency when compared in sheep and goats. They also have questionable safety levels and side effects. In light of this, several experimental vaccines are in development in order to improve safety, reproducibility, and protective immune response against the etiologic agent of CLA, Corynebacterium pseudotuberculosis. In this review, we discussed aspects as antigen, adjuvant, routes of administration, protection level, and animal models used in CLA vaccine development, as well the challenges and future perspectives. KEY POINTS: Caseous lymphadenitis (CLA) does not have an appropriate commercial vaccine. Different experimental vaccines are in development aiming to protect against Corynebacterium pseudotuberculosis. An ideal vaccine for CLA is necessary for the disease control.
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Affiliation(s)
- Rodrigo Barros de Pinho
- Laboratório de Biotecnologia Infecto-Parasitária, Centro de Desenvolvimento Tecnológico, Universidade Federal de Pelotas, Campus Universitário s/n, Prédio 19-, Pelotas, RS, 96010-900, Brazil
| | - Mara Thais de Oliveira Silva
- Laboratório de Biotecnologia Infecto-Parasitária, Centro de Desenvolvimento Tecnológico, Universidade Federal de Pelotas, Campus Universitário s/n, Prédio 19-, Pelotas, RS, 96010-900, Brazil
| | - Francisco Silvestre Brilhante Bezerra
- Laboratório de Biotecnologia Aplicada a Doenças Infecto-Parasitárias, Centro de Ciências Biológicas e da Saúde, Universidade Federal Rural do Semiárido, Mossoró, Brazil
| | - Sibele Borsuk
- Laboratório de Biotecnologia Infecto-Parasitária, Centro de Desenvolvimento Tecnológico, Universidade Federal de Pelotas, Campus Universitário s/n, Prédio 19-, Pelotas, RS, 96010-900, Brazil.
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Barros de Pinho R, de Oliveira Silva MT, Brenner G, Dié Alves MS, Azevedo V, Dias Portela R, Borsuk S. A novel approach for an immunogen against Corynebacterium pseudotuberculosis infection: An Escherichia coli bacterin expressing phospholipase D. Microb Pathog 2021; 151:104746. [PMID: 33485993 DOI: 10.1016/j.micpath.2021.104746] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 01/12/2021] [Accepted: 01/13/2021] [Indexed: 11/17/2022]
Abstract
Corynebacterium pseudotuberculosis is the causative agent of caseous lymphadenitis (CLA) in small ruminants. There is still needed an immunoprophylaxis model, which induces a protective and sustained immune response against the bacteria. In this study, we evaluated a recombinant Escherichia coli bacterin expressing the recombinant phospholipase D (rPLD) protein, the most relevant virulence factor of C. pseudotuberculosis, as a potential vaccine formulation. E. coli BL21 (DE3) Star strain was used for rPLD protein expression and was then inactivated by formaldehyde. Four groups with 10 Balb/c mice each were immunized twice within a 21 days interval: G1-control - 0.9% saline solution; G2- E. coli bacterin/pAE (naked plasmid); G3- E. coli bacterin/pAE/pld; G4-purified recombinant rPLD. Subsequently, the animals were challenged with a C. pseudotuberculosis virulent strain and evaluated for 40 days. The highest survival rate was observed for G3 with 40% protection, followed by 30% in the purified rPLD group (G4). These two groups also showed considerable IgG production when compared with the control group (G1). Also, a higher significant expression of interferon-γ was observed for the experimental groups G2, G3, and G4 when compared with a control group (G1) (p < 0.05). These results represent that a recombinant bacterin can be seen as a promising approach for vaccinal antigens against CLA, being possible to be used in association of different vaccine strategies.
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Affiliation(s)
- Rodrigo Barros de Pinho
- Laboratório de Biotecnologia Infecto-Parasitária, Centro de Desenvolvimento Tecnológico, Biotecnologia, UFPel, Pelotas, RS, 96010-900, Brazil
| | - Mara Thais de Oliveira Silva
- Laboratório de Biotecnologia Infecto-Parasitária, Centro de Desenvolvimento Tecnológico, Biotecnologia, UFPel, Pelotas, RS, 96010-900, Brazil
| | - Gabriel Brenner
- Laboratório de Biotecnologia Infecto-Parasitária, Centro de Desenvolvimento Tecnológico, Biotecnologia, UFPel, Pelotas, RS, 96010-900, Brazil
| | - Mirna Samara Dié Alves
- Laboratório de Biotecnologia Infecto-Parasitária, Centro de Desenvolvimento Tecnológico, Biotecnologia, UFPel, Pelotas, RS, 96010-900, Brazil
| | - Vasco Azevedo
- Laboratório de Genética Celular e Molecular, Instituto de Ciências Biológicas, UFMG, Belo Horizonte, MG, 31270-901, Brazil
| | - Ricardo Dias Portela
- Laboratório de Imunologia e Biologia Molecular, Instituto de Ciências da Saúde, UFBA, Salvador, BA, 40140-100, Brazil
| | - Sibele Borsuk
- Laboratório de Biotecnologia Infecto-Parasitária, Centro de Desenvolvimento Tecnológico, Biotecnologia, UFPel, Pelotas, RS, 96010-900, Brazil.
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Rebouças MF, Loureiro D, Barral TD, Seyffert N, Raynal JT, Sousa TJ, Figueiredo HCP, Azevedo V, Meyer R, Portela RW. Cell wall glycolipids from Corynebacterium pseudotuberculosis strains with different virulences differ in terms of composition and immune recognition. Braz J Microbiol 2020; 51:2101-2110. [PMID: 32712830 PMCID: PMC7688822 DOI: 10.1007/s42770-020-00343-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Accepted: 07/20/2020] [Indexed: 11/26/2022] Open
Abstract
Caseous lymphadenitis (CLA) is an infectious disease caused by Corynebacterium pseudotuberculosis in small ruminants and is characterized by the development of granulomas in the lymph nodes, spleen, liver, and lungs. Although little is known about the host-pathogen relationship of this bacterium, it was previously reported that the pathogen's lipids are important for its taxonomic classification and survival inside macrophages. However, there are no studies regarding the composition of these molecules. In this study, cell wall glycolipids from two C. pseudotuberculosis strains presenting different virulence profiles were purified and its composition was characterized. A difference was observed between the electrophoretic and chromatogram profiles for cell wall components from the two strains, mainly among molecules with low molecular weights. IgM from sheep with acute CLA recognized antigens with an estimated molecular weight of 11 kDa of the low-pathogenicity strain, while low-molecular weight antigens from the high-pathogenicity strain presented a lower recognition by these antibodies. Mass spectrometry analysis showed that the cell wall of the high-pathogenicity strain contained glycolipids with high amounts of unsaturated fatty acids and glycerophosphoinositols, which may contribute to the capacity of this strain to cause severe disease. In conclusion, it is indicated that cell wall non-protein antigens can play a key role in C. pseudotuberculosis virulence.
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Affiliation(s)
- Miriam Flores Rebouças
- Laboratory of Immunology and Molecular Biology, Health Sciences Institute, Federal University of Bahia, Salvador, Bahia, 40110-100, Brazil
| | - Dan Loureiro
- Laboratory of Immunology and Molecular Biology, Health Sciences Institute, Federal University of Bahia, Salvador, Bahia, 40110-100, Brazil
| | - Thiago Doria Barral
- Laboratory of Immunology and Molecular Biology, Health Sciences Institute, Federal University of Bahia, Salvador, Bahia, 40110-100, Brazil
| | - Nubia Seyffert
- Post-graduation Program in Microbiology, Institute of Biology, Federal University of Bahia, Salvador, Bahia, 40170-115, Brazil
| | - José Tadeu Raynal
- Laboratory of Immunology and Molecular Biology, Health Sciences Institute, Federal University of Bahia, Salvador, Bahia, 40110-100, Brazil
| | - Thiago Jesus Sousa
- Laboratory of Cellular and Molecular Genetics, Biological Sciences Institute, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Henrique Cesar Pereira Figueiredo
- National Reference Laboratory for Aquatic Animal Diseases, Ministry of Fisheries and Aquaculture, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Vasco Azevedo
- Laboratory of Cellular and Molecular Genetics, Biological Sciences Institute, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Roberto Meyer
- Laboratory of Immunology and Molecular Biology, Health Sciences Institute, Federal University of Bahia, Salvador, Bahia, 40110-100, Brazil
| | - Ricardo Wagner Portela
- Laboratory of Immunology and Molecular Biology, Health Sciences Institute, Federal University of Bahia, Salvador, Bahia, 40110-100, Brazil.
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NanH and PknG putative virulence factors as a recombinant subunit immunogen against Corynebacterium pseudotuberculosis infection in mice. Vaccine 2020; 38:8099-8106. [DOI: 10.1016/j.vaccine.2020.11.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 09/15/2020] [Accepted: 11/03/2020] [Indexed: 12/31/2022]
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9
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Factors associated with the seroprevalence of caseous lymphadenitis in sheep from Northeastern Brazil. Prev Vet Med 2020; 182:105098. [PMID: 32738528 DOI: 10.1016/j.prevetmed.2020.105098] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 07/16/2020] [Accepted: 07/16/2020] [Indexed: 01/05/2023]
Abstract
Caseous lymphadenitis (CL) is one of the main infectious diseases in sheep, responsible for great economic losses, mainly in Northeast region of Brazil, which has the largest sheep flock in the country. Thus, the aim of this survey was to determine the factors associated with the seroprevalence of this disease in sheep from Northeastern Brazil using a planned sample of flocks and animals. Samples were collected from 2312 adult and young sheep of both sex from 196 farms, located in 51 municipalities in five Northeastern Brazilian states (Ceará, Paraíba, Piauí, Rio Grande do Norte, and Sergipe). Serological diagnosis was performed using the indirect ELISA technique. Factors associated with seropositivity were identified by variables extracted from epidemiological questionnaires administered to breeders, using univariable and multivariable analyses. Factors associated with prevalence were purebred sheep (Prevalence ratio - PR = 1.189; P = 0.017), ram acquisition from animal expositions (PR = 1.192; P = 0.020), offspring is separated from ewes (PR = 1.132; P = 0.048), water supplied to sheep from ponds (PR = 1.365; P = 0.002), and delayed disposal of infected animals (PR = 1.263; P = 0.027). Flock-level and animal-level prevalences were 93.88 % (95 % CI = 89.60-96.46%) and 37.46 % (95 % CI = 35.51-39.45%), respectively. In view of the high prevalence found here and based on the associated factors, the implementation of an efficient CL control programme in Northeastern Brazil is recommended.
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Bontempi I, Leal K, Prochetto E, Díaz G, Cabrera G, Bortolotti A, Morbidoni HR, Borsuk S, Dellagostin O, Marcipar I. Recombinant Mycobacterium bovis BCG is a promising platform to develop vaccines against Trypansoma cruzi infection. Clin Exp Immunol 2020; 201:306-316. [PMID: 32464684 DOI: 10.1111/cei.13469] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Revised: 05/05/2020] [Accepted: 05/22/2020] [Indexed: 12/22/2022] Open
Abstract
Chagas disease, caused by the hemoflagelate parasite Trypanosoma cruzi, is one of the most prevalent endemic parasitoses, affecting 7-8 million people. Due to the complexity of the infection, no vaccines are available at present. The extraordinary adjuvant capacity of bacille Calmette-Guérin (BCG) was explored in this work to develop a vaccine candidate to protect against T. cruzi infection using the recombinant BCG (rBCG) vaccine platform. Three antigens of the parasite corresponding to the N and C terminal fragments of the enzyme trans-sialidase (NT-TS and CT-TS, respectively) and a fragment of the cruzipain enzyme (CZf) were cloned into the vectors pUS997 and pUS2000 and transformed into the BCG Pasteur strain. In vaccinated mice, rBCG expressing NT-TS in pUS2000 plasmid provided the highest protection and the lowest parasitemia after challenging BALB/c mice with a 50% lethal dose of parasites. When mice vaccinated with pUS2000-NT-TS were challenged with a 100% lethal dose of parasite, high levels of protection were also obtained, together with a low degree of cardiac lesions 120 days after infection. In immunized mice with pUS2000-NT-TS/rBCG clone, the proliferation of CD4+ cells from splenocytes stimulated with the TS antigen was significant; this stimulation increased interferon (IFN)-γ and interleukin (IL)-17 within CD4⁺ T lymphocytes (LTCD4+ ) cells and IFN-γ and CD107 expression within LTCD8+ cells. Therefore, pUS2000-NT-TS/rBCG conferred high levels of protection, which correlated with an immune response orientated towards a T helper type 1 (Th1)/Th17 profile, together with an LTC-specific response, indicating that rBCG is a promising platform to develop vaccines against T. cruzi.
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Affiliation(s)
- I Bontempi
- Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Santa Fe, Argentina.,Facultad de Ciencias Médicas, Universidad Nacional del Litoral, Santa Fe, Argentina
| | - K Leal
- Núcleo de Biotecnologia, CDTec, Universidade Federal de Pelotas, Pelotas, Brazil
| | - E Prochetto
- Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Santa Fe, Argentina
| | - G Díaz
- Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Santa Fe, Argentina
| | - G Cabrera
- Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Santa Fe, Argentina.,Facultad de Ciencias Médicas, Universidad Nacional del Litoral, Santa Fe, Argentina
| | - A Bortolotti
- Laboratorio de Microbiología Molecular, Facultad de Ciencias Médicas, Universidad Nacional de Rosario, Rosario, Argentina
| | - H R Morbidoni
- Laboratorio de Microbiología Molecular, Facultad de Ciencias Médicas, Universidad Nacional de Rosario, Rosario, Argentina
| | - S Borsuk
- Núcleo de Biotecnologia, CDTec, Universidade Federal de Pelotas, Pelotas, Brazil
| | - O Dellagostin
- Núcleo de Biotecnologia, CDTec, Universidade Federal de Pelotas, Pelotas, Brazil
| | - I Marcipar
- Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Santa Fe, Argentina.,Facultad de Ciencias Médicas, Universidad Nacional del Litoral, Santa Fe, Argentina
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Silva MTDO, Bezerra FSB, de Pinho RB, de Santana Ferreira C, Vivas WL, Portela RWD, Azevedo VADC, Borsuk S. The combination of Corynebacterium pseudotuberculosis recombinant proteins rPLD, rCP01850 and rCP09720 for improved detection of caseous lymphadenitis in sheep by ELISA. J Med Microbiol 2019; 68:1759-1765. [PMID: 31724936 DOI: 10.1099/jmm.0.001096] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Corynebacterium pseudotuberculosis is the causative agent of caseous lymphadenitis (CLA), a chronic disease of sheep and goats. Current methods for CLA diagnosis cannot identify all infected animals; therefore, the development of an improved diagnosis is essential. We evaluated recombinant phospholipase D (rPLD) protein individually or combined with rCP01850 or rCP09720 proteins for the detection of CLA in sheep. A total of 40 positive and 25 negative sera samples were analysed by ELISA using the recombinant proteins. ELISA using rPLD (E1), rPLD+rCP01850 (E2) and rPLD+rCP09720 (E3) showed 90, 92.5 and 97.5 % sensitivity and 92, 72 and 92 % specificity, respectively. The area under the receiver operating characteristic curves for E1, E2 and E3 was 0.925, 0.882 and 0.990, respectively. ELISA using rPLD +rCP09720 demonstrated the best sensitivity and specificity. Thus, the combination of these recombinant proteins in indirect ELISA has the potential for the diagnosis of CLA in sheep.
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Affiliation(s)
- Mara Thais de Oliveira Silva
- Laboratório de Biotecnologia Infecto-Parasitária, Centro de Desenvolvimento Tecnológico, Biotecnologia, UFPel, Pelotas, RS, 96010-900, Brazil
| | | | - Rodrigo Barros de Pinho
- Laboratório de Biotecnologia Infecto-Parasitária, Centro de Desenvolvimento Tecnológico, Biotecnologia, UFPel, Pelotas, RS, 96010-900, Brazil
| | | | - Wanessa Lordêlo Vivas
- Laboratório de Biomateriais, Instituto de Tecnologia e Pesquisa, UNIT, Aracajú, SE, 49032-490, Brazil
| | - Ricardo Wagner Dias Portela
- Laboratório de Genética Celular e Molecular, Instituto de Ciências Biológicas, UFMG, Belo Horizonte, MG, 31270-901, Brazil
| | | | - Sibele Borsuk
- Laboratório de Biotecnologia Infecto-Parasitária, Centro de Desenvolvimento Tecnológico, Biotecnologia, UFPel, Pelotas, RS, 96010-900, Brazil
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de Oliveira Silva MT, de Pinho RB, Bezerra FSB, Campos VF, Azevedo V, Borsuk S. Establishment of an objective endpoint in mice model for caseous lymphadenitis vaccine trials. Vet Microbiol 2019; 230:86-89. [DOI: 10.1016/j.vetmic.2019.01.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Revised: 01/15/2019] [Accepted: 01/18/2019] [Indexed: 01/19/2023]
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