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Chacón-Díaz C, Zabalza-Baranguá A, San Román B, Blasco JM, Iriarte M, Salas-Alfaro D, Hernández-Mora G, Barquero-Calvo E, Guzmán-Verri C, Chaves-Olarte E, Grilló MJ, Moreno E. Brucella abortus S19 GFP-tagged vaccine allows the serological identification of vaccinated cattle. PLoS One 2021; 16:e0260288. [PMID: 34807952 PMCID: PMC8608319 DOI: 10.1371/journal.pone.0260288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Accepted: 11/05/2021] [Indexed: 11/18/2022] Open
Abstract
Bovine brucellosis induces abortion in cows, produces important economic losses, and causes a widely distributed zoonosis. Its eradication was achieved in several countries after sustained vaccination with the live attenuated Brucella abortus S19 vaccine, in combination with the slaughtering of serologically positive animals. S19 induces antibodies against the smooth lipopolysaccharide (S-LPS), making difficult the differentiation of infected from vaccinated bovines. We developed an S19 strain constitutively expressing the green fluorescent protein (S19-GFP) coded in chromosome II. The S19-GFP displays similar biological characteristics and immunogenic and protective efficacies in mice to the parental S19 strain. S19-GFP can be distinguished from S19 and B. abortus field strains by fluorescence and multiplex PCR. Twenty-five heifers were vaccinated withS19-GFP (5×109 CFU) by the subcutaneous or conjunctival routes and some boosted with GFP seven weeks thereafter. Immunized animals were followed up for over three years and tested for anti-S-LPS antibodies by both the Rose Bengal test and a competitive ELISA. Anti-GFP antibodies were detected by an indirect ELISA and Western blotting. In most cases, anti-S-LPS antibodies preceded for several weeks those against GFP. The anti-GFP antibody response was higher in the GFP boosted than in the non-boosted animals. In all cases, the anti-GFP antibodies persisted longer, or at least as long, as those against S-LPS. The drawbacks and potential advantages of using the S19-GFP vaccine for identifying vaccinated animals in infected environments are discussed.
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Affiliation(s)
- Carlos Chacón-Díaz
- Centro de Investigación en Enfermedades Tropicales, Facultad de Microbiología, Universidad de Costa Rica, San Pedro, San José, Costa Rica
- * E-mail:
| | - Ana Zabalza-Baranguá
- Instituto de Agrobiotecnología, CSIC-Gobierno de Navarra, Mutilva, Navarra, Spain
| | - Beatriz San Román
- Instituto de Agrobiotecnología, CSIC-Gobierno de Navarra, Mutilva, Navarra, Spain
| | - José-María Blasco
- Unidad de Sanidad Animal, Centro de Investigación y Tecnología Agroalimentaria (CITA), Gobierno de Aragón, Aragón, Zaragoza, Spain
| | - Maite Iriarte
- Departamento de Microbiología y Parasitología, Instituto de Salud Tropical, Universidad de Navarra, Pamplona, Navarra, Spain
| | - Dariana Salas-Alfaro
- Centro de Investigación en Enfermedades Tropicales, Facultad de Microbiología, Universidad de Costa Rica, San Pedro, San José, Costa Rica
| | - Gabriela Hernández-Mora
- Servicio Nacional de Salud Animal, Ministerio de Agricultura y Ganadería, Lagunilla, Heredia, Costa Rica
| | - Elías Barquero-Calvo
- Programa de Investigación en Enfermedades Tropicales (PIET), Escuela de Medicina Veterinaria, Universidad Nacional, Lagunilla, Heredia, Costa Rica
| | - Caterina Guzmán-Verri
- Programa de Investigación en Enfermedades Tropicales (PIET), Escuela de Medicina Veterinaria, Universidad Nacional, Lagunilla, Heredia, Costa Rica
| | - Esteban Chaves-Olarte
- Centro de Investigación en Enfermedades Tropicales, Facultad de Microbiología, Universidad de Costa Rica, San Pedro, San José, Costa Rica
| | - María-Jesús Grilló
- Instituto de Agrobiotecnología, CSIC-Gobierno de Navarra, Mutilva, Navarra, Spain
| | - Edgardo Moreno
- Programa de Investigación en Enfermedades Tropicales (PIET), Escuela de Medicina Veterinaria, Universidad Nacional, Lagunilla, Heredia, Costa Rica
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2
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Costa LF, Cabello AL, Batista DFA, Chaki SP, de Figueiredo P, da Paixão TA, Rice-Ficht AC, Ficht TA, Santos RL. The candidate vaccine strain Brucella ovis ∆abcBA is protective against Brucella melitensis infection in mice. Microbiol Immunol 2020; 64:730-736. [PMID: 32965738 DOI: 10.1111/1348-0421.12850] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 09/08/2020] [Accepted: 09/18/2020] [Indexed: 01/19/2023]
Abstract
Brucellosis is a major zoonotic disease, and Brucella melitensis is the species most often associated with human infection. Vaccination is the most efficient tool for controlling animal brucellosis, with a consequent decrease of incidence of human infections. Commercially available live attenuated vaccines provide some degree of protection, but retain residual pathogenicity to human and animals. In this study, Brucella ovis ∆abcBA (Bo∆abcBA), a live attenuated candidate vaccine strain, was tested in two formulations (encapsulated with alginate and alginate plus vitelline protein B [VpB]) to immunize mice against experimental challenge with B. melitensis strain 16M. One week after infection, livers and spleens of immunized mice had reduced numbers of the challenge strain B. melitensis 16M when compared with those of nonimmunized mice, with a reduction of approximately 1-log10 of B. melitensis 16M count in the spleens from immunized mice. Moreover, splenocytes stimulated with B. melitensis antigens in vitro secreted IFN-γ when mice had been immunized with Bo∆abcBA encapsulated with alginate plus VpB, but not with alginate alone. Body and liver weights were similar among groups, although spleens from mice immunized with Bo∆abcBA encapsulated with alginate were larger than those immunized with Bo∆abcBA encapsulated with alginate plus VpB or nonimmunized mice. This study demonstrated that two vaccine formulations containing Bo∆abcBA protected mice against experimental challenge with B. melitensis.
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Affiliation(s)
- Luciana Fachini Costa
- Departamento de Clínica e Cirurgia Veterinárias, Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Ana L Cabello
- Department of Veterinary Pathobiology, College of Veterinary Medicine, Texas A&M University, College Station, Texas
| | - Diego Felipe Alves Batista
- Departamento de Clínica e Cirurgia Veterinárias, Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Sankar P Chaki
- Department of Veterinary Pathobiology, College of Veterinary Medicine, Texas A&M University, College Station, Texas
| | - Paul de Figueiredo
- Department of Veterinary Pathobiology, College of Veterinary Medicine, Texas A&M University, College Station, Texas
| | - Tatiane Alves da Paixão
- Departamento de Patologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Allison C Rice-Ficht
- Department of Veterinary Pathobiology, College of Veterinary Medicine, Texas A&M University, College Station, Texas
| | - Thomas A Ficht
- Department of Veterinary Pathobiology, College of Veterinary Medicine, Texas A&M University, College Station, Texas
| | - Renato Lima Santos
- Departamento de Clínica e Cirurgia Veterinárias, Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
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3
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Carvalho TF, Haddad JPA, Paixão TA, Santos RL. Meta-analysis of brucellosis vaccinology in natural hosts. PESQUISA VETERINARIA BRASILEIRA 2020. [DOI: 10.1590/1678-5150-pvb-6651] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
ABSTRACT: Brucellosis is a relevant zoonotic disease for which the most important tool for control is vaccination of susceptible animals. Assessment of vaccine efficacy in natural hosts is based on prevention of abortion and Brucella infection in organs of immunized animals. A meta-analysis of experimental vaccination of Brucella spp. natural hosts was performed, including 45 PubMed and/or Scopus-indexed publications, representing 116 individual experiments. Difference of risk was calculated as an indicator of protection, and a temporal analysis (1980-2016) demonstrated that experimental vaccines tested on natural hosts provided levels of protection that were stable over the past decades. The meta-regression model developed in this study included different vaccine categories (attenuated, inactivated, mutant, subunit, and vectored) considering the difference of risk as the dependent variable. The subcutaneous route of vaccination provided better protection when compared to the intramuscular and oral routes of vaccination. Surprisingly, inactivated vaccines provided better protection than live naturally attenuated vaccine strains (spontaneous mutations) that were considered the reference, whereas subunit vaccines provided lower levels of protection. This is the first meta-analysis of Brucella vaccinology in the natural hosts. These results are useful for the development of new vaccination protocols for controlling animal brucellosis.
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Verdiguel-Fernández L, Oropeza-Navarro R, Ortiz A, Robles-Pesina MG, Ramírez-Lezama J, Castañeda-Ramírez A, Verdugo-Rodríguez A. Brucella melitensis omp31 Mutant Is Attenuated and Confers Protection Against Virulent Brucella melitensis Challenge in BALB/c Mice. J Microbiol Biotechnol 2020; 30:497-504. [PMID: 31986561 PMCID: PMC9728373 DOI: 10.4014/jmb.1908.08056] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
For control of brucellosis in small ruminants, attenuated B. melitensis Rev1 is used but it can be virulent for animals and human. Based on these aspects, it is essential to identify potential immunogens to avoid these problems in prevention of brucellosis. The majority of OMPs in the Omp25/31 family have been studied because these proteins are relevant in maintaining the integrity of the outer membrane but their implication in the virulence of the different species of this genus is not clearly described. Therefore, in this work we studied the role of Omp31 on virulence by determining the residual virulence and detecting lesions in spleen and testis of mice inoculated with the B. melitensis LVM31 mutant strain. In addition, we evaluated the conferred protection in mice immunized with the mutant strain against the challenge with the B. melitensis Bm133 virulent strain. Our results showed that the mutation of omp31 caused a decrease in splenic colonization without generating apparent lesions or histopathological changes apparent in both organs in comparison with the control strains and that the mutant strain conferred similar protection as the B. melitensis Rev1 vaccine strain against the challenge with B. melitensis Bm133 virulent strain. These results allow us to conclude that Omp31 plays an important role on the virulence of B. melitensis in the murine model, and due to the attenuation shown by the strain, it could be considered a vaccine candidate for the prevention of goat brucellosis.
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Affiliation(s)
- L Verdiguel-Fernández
- Laboratorio de Microbiología Molecular, Departamento de Microbiología e Inmunología, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Avenida Universidad 3000, colonia UNAM CU, Coyoacán C.P 04510, CdMx, México
| | - R Oropeza-Navarro
- Departamento de Microbiología Molecular, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, México
| | - Adolfo Ortiz
- Unidad de Bioseguridad de Brucella, Departamento de Microbiología e Inmunología, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Coyoacán, México
| | - MG Robles-Pesina
- Centro Nacional de Servicios de Diagnóstico en Salud Animal (CENASA), Servicio Nacional de Sanidad, Inocuidad y Calidad Agroalimentaria, Tecámac, México
| | - J Ramírez-Lezama
- Departamento de Patología, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Coyoacán, CdMx, México
| | - A Castañeda-Ramírez
- Departamento de Zootecnia, Universidad Autónoma de Chapingo, Texcoco, México
| | - A Verdugo-Rodríguez
- Laboratorio de Microbiología Molecular, Departamento de Microbiología e Inmunología, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Avenida Universidad 3000, colonia UNAM CU, Coyoacán C.P 04510, CdMx, México,Corresponding author Phone: +52-1-555622-58-97 E-mail:
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5
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Tian M, Song M, Yin Y, Lian Z, Li Z, Hu H, Guan X, Cai Y, Ding C, Wang S, Li T, Qi J, Yu S. Characterization of the main immunogenic proteins in Brucella infection for their application in diagnosis of brucellosis. Comp Immunol Microbiol Infect Dis 2020; 70:101462. [PMID: 32143107 DOI: 10.1016/j.cimid.2020.101462] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Revised: 02/21/2020] [Accepted: 02/25/2020] [Indexed: 02/07/2023]
Abstract
Brucellosis is an important zoonotic bacterial disease widespread in the world. The key step of control this disease is accurate diagnosis and elimination of diseased animals. The classic diagnostic methods, such as tube agglutination test, are inaccurate and nonspecific, because of cross-reaction with Yersinia enterocolitica serotype O:9. Previously, several proteins were reported as Brucella main immunogens. In this study, we used animal infection model to evaluate antibody production against OMP16, BP26, BLS, BCSP31, VirB12, SodC and GroEL proteins and investigated their application in diagnosis of brucellosis. The results showed that the BP26 and BLS are two best immunogenic proteins. In further study, we detected 44 clinical bovine sera using western blot, showing that the BP26 and BLS reacted with 30 Brucella-positive sera, but false-positive results were also shown in 14 Brucella-free sera. In an indirect ELISA assay, compared to lipopolysaccharide-based ELISA, the conformance of the BP26-based ELISA was 92.68 % in Brucella-positive sera, but only 52.94 % in Brucella-free sera. The BLS-based ELISA can hardly differentiate positive sera from negative sera. Besides, truncated fragments of the BP26 protein cannot exclude false-positive results in detection of Brucella-free sera. Altogether, although Brucella main immunogenic proteins have good reaction with Brucella-positive sera, false-positive reaction with Brucella-free sera may lead to misdiagnosis of brucellosis, suggesting that it should be more careful to use these immunogenic proteins as antigen targets to diagnosis of brucellosis.
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Affiliation(s)
- Mingxing Tian
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences (CAAS), Shanghai, 200241, China
| | - Meiying Song
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences (CAAS), Shanghai, 200241, China; College of Animal Science and Technology, Shandong Agricultural University, Taian, 271018, China
| | - Yi Yin
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences (CAAS), Shanghai, 200241, China
| | - Zhengmin Lian
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences (CAAS), Shanghai, 200241, China
| | - Zichen Li
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences (CAAS), Shanghai, 200241, China
| | - Hai Hu
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences (CAAS), Shanghai, 200241, China
| | - Xiang Guan
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences (CAAS), Shanghai, 200241, China
| | - Yumei Cai
- College of Animal Science and Technology, Shandong Agricultural University, Taian, 271018, China
| | - Chan Ding
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences (CAAS), Shanghai, 200241, China
| | - Shaohui Wang
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences (CAAS), Shanghai, 200241, China
| | - Tao Li
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences (CAAS), Shanghai, 200241, China
| | - Jingjing Qi
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences (CAAS), Shanghai, 200241, China
| | - Shengqing Yu
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences (CAAS), Shanghai, 200241, China.
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6
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Soh SH, Shim S, Im YB, Park HT, Cho CS, Yoo HS. Induction of Th2-related immune responses and production of systemic IgA in mice intranasally immunized with Brucella abortus malate dehydrogenase loaded chitosan nanoparticles. Vaccine 2019; 37:1554-1564. [PMID: 30792035 DOI: 10.1016/j.vaccine.2019.02.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Revised: 02/02/2019] [Accepted: 02/07/2019] [Indexed: 12/28/2022]
Abstract
The aim of this study was to investigate the induction of mucosal immune responses by an important Brucella abortus antigen, malate dehydrogenase (Mdh), loaded in mucoadhesive chitosan nanoparticles (CNs) and immunized intranasally in a BALB/c mouse model. The production of cytokines was investigated in human leukemic monocyte cells (THP-1 cells) after stimulation with the nanoparticles. Mdh-loaded CNs (CNs-Mdh) induced higher interleukin (IL)-6 production than unloaded antigens and TF loaded CNs (CNs-TF). Using ELISpot to quantify cytokines and antibody-secreting cells in the intranasally immunized mice, IL-4 and IgG-secreting cells were found to be significantly increased at 4 weeks and 6 weeks post-immunization in the CNs-Mdh immunized group, respectively. Increases in Mdh-specific IgG, IgG1, and IgG2a antibodies were confirmed at 6 weeks after immunization, indicating a predominant IgG1 response. Analysis of the mucosal immune response in the intranasally immunized mice revealed, Mdh-specific IgA and total IgA in the nasal washes, genital secretions, fecal extracts and sera that were remarkably increased in the CNs-Mdh-immunized group compared to the CNs-TF-immunized group except total IgA of nasal wash. Therefore, the results indicated that the intranasal immunization of CNs-loaded B. abortus Mdh antigen effectively induced antigen-specific mucosal immune responses through the elicitation of Th2-related immune responses.
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Affiliation(s)
- Sang Hee Soh
- Department of Infectious Diseases, College of Veterinary Medicine, Seoul National University, Seoul 08826, Republic of Korea.
| | - Soojin Shim
- Department of Infectious Diseases, College of Veterinary Medicine, Seoul National University, Seoul 08826, Republic of Korea.
| | - Young Bin Im
- Department of Infectious Diseases, College of Veterinary Medicine, Seoul National University, Seoul 08826, Republic of Korea.
| | - Hong-Tae Park
- Department of Infectious Diseases, College of Veterinary Medicine, Seoul National University, Seoul 08826, Republic of Korea.
| | - Chong-Su Cho
- Department of Agricultural Biotechnology & Research Institute for Agriculture & Life Sciences, Seoul National University, Seoul 08826, Republic of Korea.
| | - Han Sang Yoo
- Department of Infectious Diseases, College of Veterinary Medicine, Seoul National University, Seoul 08826, Republic of Korea.
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Zabalza-Baranguá A, San-Román B, Chacón-Díaz C, de Miguel MJ, Muñoz PM, Iriarte M, Blasco JM, Grilló MJ. GFP tagging of Brucella melitensis Rev1 allows the identification of vaccinated sheep. Transbound Emerg Dis 2018; 66:505-516. [PMID: 30375177 PMCID: PMC7379934 DOI: 10.1111/tbed.13053] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Revised: 10/17/2018] [Accepted: 10/22/2018] [Indexed: 11/30/2022]
Abstract
Brucellosis is a worldwide zoonosis causing important economic loss and a public health problem. Small ruminants are the preferred hosts of Brucella melitensis and thus the main source of human infections. Effective control of sheep and goat brucellosis has been achieved in several countries through vaccination with the live-attenuated B. melitensis Rev1 vaccine. However, Rev1 induces a long-lasting serological response that hinders the differentiation between infected and vaccinated animals. A Rev1::gfp strain expressing constitutively the Green Fluorescent Protein (GFP) was built by stable insertion of a mini-Tn7-gfp in the glmS-recG non-codifying chromosomal region. An associated indirect ELISA-GFP was developed to identify anti-GFP antibodies in vaccinated animals. The resulting Rev1::gfp kept the biological properties of the Rev1 reference strain, including residual virulence and efficacy in mice, and was readily distinguished from Rev1 and other Brucella field strains by direct visualization under ultraviolet illumination, fluorescence microscopy and a multiplex PCR-GFP. The Rev1::gfp strain did not elicit anti-GFP antibodies itself in lambs but when applied in combination with recombinant GFP induced an intense and long-lasting (>9 months) anti-GFP serological response readily detectable by the ELISA-GFP. Overall, our results confirm that Rev1 GFP-tagging can be a suitable alternative for identifying vaccinated sheep in infected contexts.
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Affiliation(s)
- Ana Zabalza-Baranguá
- Instituto de Agrobiotecnología (IdAB, CSIC-Gobierno de Navarra), Mutilva, Navarra, Spain
| | - Beatriz San-Román
- Instituto de Agrobiotecnología (IdAB, CSIC-Gobierno de Navarra), Mutilva, Navarra, Spain
| | - Carlos Chacón-Díaz
- Centro de Investigación en Enfermedades Tropicales, Facultad de Microbiología, Universidad de Costa Rica, San José, Costa Rica
| | - María-Jesús de Miguel
- Centro de Investigación y Tecnología Agroalimentaria (CITA), Instituto Agroalimentario de Aragón (IA2), Gobierno de Aragón, Zaragoza, Spain
| | - Pilar-María Muñoz
- Centro de Investigación y Tecnología Agroalimentaria (CITA), Instituto Agroalimentario de Aragón (IA2), Gobierno de Aragón, Zaragoza, Spain
| | - Maite Iriarte
- Instituto de Salud Tropical - Dpto. de Microbiología y Parasitología, Universidad de Navarra, Pamplona, Spain
| | - José-María Blasco
- Centro de Investigación y Tecnología Agroalimentaria (CITA), Instituto Agroalimentario de Aragón (IA2), Gobierno de Aragón, Zaragoza, Spain
| | - María-Jesús Grilló
- Instituto de Agrobiotecnología (IdAB, CSIC-Gobierno de Navarra), Mutilva, Navarra, Spain
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Mailybayeva A, Yespembetov B, Ryskeldinova S, Zinina N, Sansyzbay A, Renukaradhya GJ, Petrovsky N, Tabynov K. Improved influenza viral vector based Brucella abortus vaccine induces robust B and T-cell responses and protection against Brucella melitensis infection in pregnant sheep and goats. PLoS One 2017; 12:e0186484. [PMID: 29023541 PMCID: PMC5638537 DOI: 10.1371/journal.pone.0186484] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2017] [Accepted: 10/02/2017] [Indexed: 01/26/2023] Open
Abstract
We previously developed a potent candidate vaccine against bovine brucellosis caused by Brucella abortus using the influenza viral vector expressing Brucella Omp16 and L7/L12 proteins (Flu-BA). Our success in the Flu-BA vaccine trial in cattle and results of a pilot study in non-pregnant small ruminants prompted us in the current study to test its efficacy against B. melitensis infection in pregnant sheep and goats. In this study, we improved the Flu-BA vaccine formulation and immunization method to achieve maximum efficacy and safety. The Flu-BA vaccine formulation had two additional proteins Omp19 and SOD, and administered thrice with 20% Montanide Gel01 adjuvant, simultaneously by both subcutaneous and conjunctival routes at 21 days intervals in pregnant sheep and goats. At 42 days post-vaccination (DPV) we detected antigen-specific IgG antibodies predominantly of IgG2a isotype but also IgG1, and also detected a strong lymphocyte recall response with IFN-γ production. Importantly, our candidate vaccine prevented abortion in 66.7% and 77.8% of pregnant sheep and goats, respectively. Furthermore, complete protection (absence of live B. melitensis 16M) was observed in 55.6% and 66.7% of challenged sheep and goats, and 72.7% and 90.0% of their fetuses (lambs/yeanlings), respectively. The severity of B. melitensis 16M infection in vaccinated sheep and goats and their fetuses (index of infection and rates of Brucella colonization in tissues) was significantly lower than in control groups. None of the protection parameters after vaccination with Flu-BA vaccine were statistically inferior to protection seen with the commercial B. melitensis Rev.1 vaccine (protection against abortion and vaccination efficacy, alpha = 0.18–0.34, infection index, P = 0.37–0.77, Brucella colonization, P = 0.16 to P > 0.99). In conclusion, our improved Flu-BA vaccine formulation and delivery method were found safe and effective in protecting pregnant sheep and goats against adverse consequences of B. melitensis infection.
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Affiliation(s)
- Aigerim Mailybayeva
- Laboratory of Infectious Disease Prevention, Research Institute for Biological Safety Problems, Zhambulskaya Oblast, Kordaiskiy Rayon, Gvardeiskiy, Republic of Kazakhstan
| | - Bolat Yespembetov
- Laboratory of Microbiology, Research Institute for Biological Safety Problems, Zhambulskaya Oblast, Kordaiskiy Rayon, Gvardeiskiy, Republic of Kazakhstan
| | - Sholpan Ryskeldinova
- Laboratory of Infectious Disease Prevention, Research Institute for Biological Safety Problems, Zhambulskaya Oblast, Kordaiskiy Rayon, Gvardeiskiy, Republic of Kazakhstan
| | - Nadezhda Zinina
- Laboratory of Microbiology, Research Institute for Biological Safety Problems, Zhambulskaya Oblast, Kordaiskiy Rayon, Gvardeiskiy, Republic of Kazakhstan
| | - Abylai Sansyzbay
- Laboratory of Infectious Disease Prevention, Research Institute for Biological Safety Problems, Zhambulskaya Oblast, Kordaiskiy Rayon, Gvardeiskiy, Republic of Kazakhstan
| | - Gourapura J. Renukaradhya
- Food Animal Health Research Program, Ohio Agricultural Research and Development Center, Department of Veterinary Preventive Medicine, The Ohio State University (OSU), Wooster, United States of America
| | | | - Kaissar Tabynov
- Laboratory of Infectious Disease Prevention, Research Institute for Biological Safety Problems, Zhambulskaya Oblast, Kordaiskiy Rayon, Gvardeiskiy, Republic of Kazakhstan
- Vaxine Pty Ltd and Flinders University, Bedford Park, Australia
- * E-mail: ,
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9
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More S, Bøtner A, Butterworth A, Calistri P, Depner K, Edwards S, Garin-Bastuji B, Good M, Gortázar Schmidt C, Michel V, Miranda MA, Nielsen SS, Raj M, Sihvonen L, Spoolder H, Stegeman JA, Thulke HH, Velarde A, Willeberg P, Winckler C, Baldinelli F, Broglia A, Verdonck F, Beltrán Beck B, Kohnle L, Morgado J, Bicout D. Assessment of listing and categorisation of animal diseases within the framework of the Animal Health Law (Regulation (EU) No 2016/429): infection with Brucella abortus, B. melitensis and B. suis. EFSA J 2017; 15:e04889. [PMID: 32625554 PMCID: PMC7009888 DOI: 10.2903/j.efsa.2017.4889] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
The infection with Brucella abortus, Brucella melitensis and Brucella suis has been assessed according to the criteria of the Animal Health Law (AHL), in particular criteria of Article 7 on disease profile and impacts, Article 5 on the eligibility of the infection with B. abortus, B. melitensis and B. suis to be listed, Article 9 for the categorisation of the infection with B. abortus, B. melitensis and B. suis according to disease prevention and control rules as in Annex IV and Article 8 on the list of animal species related to the infection with B. abortus, B. melitensis and B. suis. The assessment has been performed following a methodology composed of information collection and compilation, expert judgement on each criterion at individual and, if no consensus was reached before, also at collective level. The output is composed of the categorical answer, and for the questions where no consensus was reached, the different supporting views are reported. Details on the methodology used for this assessment are explained in a separate opinion. According to the assessment performed, the infection with B. abortus, B. melitensis and B. suis can be considered eligible to be listed for Union intervention as laid down in Article 5(3) of the AHL. The disease complies with the criteria as in Sections 2, 3, 4 and 5 of Annex IV of the AHL, for the application of the disease prevention and control rules referred to in points (b), (c), (d) and (e) of Article 9(1). The animal species to be listed for the infection with B. abortus, B. melitensis and B. suis according to Article 8(3) criteria are several mammal species, as indicated in the present opinion.
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França S, Mol J, Costa E, Silva A, Xavier M, Tsolis R, Reis J, Paixão T, Santos R. Indirect ELISA for diagnosis of Brucella ovis infection in rams. ARQ BRAS MED VET ZOO 2014. [DOI: 10.1590/1678-6767] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Brucella ovis is a major cause of epididymitis in sexually mature rams, resulting in subfertility, infertility, and economic losses for the sheep industry worldwide. The aim of this study was to develop an indirect ELISA (iELISA) using recombinant proteins, namely rBoP59 and rBP26, as antigens for serological diagnosis of B. ovisinfection. The BoP59 and BP26 recombinant proteins were expressed in E. coli and purified by affinity chromatography. Antigenicity was tested by Western blot and iELISA. Standardization of iELISA was performed with 500ng and 1µg BoP59 and rBP26 per well, testing serum from uninfected and experimentally infected rams. rBP26 was effective in distinguishing positive from negative rams. The rBP26 iELISA developed in this study is the first to use a completely purified rBP26 as antigen resulting in high sensitivity (100%) and specificity (90.2%), and an overall accuracy equal to 1.0.
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11
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Wang Z, Niu JR, Wang XL, Wu TL, Cheng J, Lu L, Wu QM. Evaluation of a Brucella melitensis mutant deficient in O-polysaccharide export system ATP-binding protein as a rough vaccine candidate. Microbes Infect 2014; 16:633-9. [PMID: 25043564 DOI: 10.1016/j.micinf.2014.06.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2014] [Revised: 06/19/2014] [Accepted: 06/20/2014] [Indexed: 11/30/2022]
Abstract
Rough Brucella mutants have been sought as vaccine candidates that do not interfere with the conventional serological diagnosis of brucellosis. In this study, a rough mutant of Brucella melitensis was generated by the disruption of the wzt gene, which encodes the O-polysaccharide (O-PS) export system ATP-binding protein. In vivo, the mutant 16MΔwzt was attenuated and conferred a level of protection against B. melitensis 16M challenge similar to that conferred by the vaccine strain B. melitensis M5 in mice. In pregnant sheep, the mutant 16MΔwzt did not induce abortion. In vitro, 16MΔwzt was more susceptible to polymyxin B and complement-mediated killing than B. melitensis 16M was. Most importantly, although 16MΔwzt had a rough phenotype, it was able to synthesize O-PS and did not induce detectable specific antibodies in sheep. These results suggested that 16MΔwzt deserved to further systematic evaluation as a vaccine for target animal hosts due to its promising features.
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Affiliation(s)
- Zhen Wang
- Animal Science and Technology College, Beijing University of Agriculture, Beinong Road 7, Huilongguan, Changping District, Beijing 102206, China; Key Laboratory of Animal Epidemiology and Zoonosis of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Yuanmingyuan Xilu No. 2, Haidian District, Beijing 100193, China
| | - Jian Rui Niu
- Key Laboratory of Animal Epidemiology and Zoonosis of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Yuanmingyuan Xilu No. 2, Haidian District, Beijing 100193, China
| | - Xiao Lei Wang
- Key Laboratory of Animal Epidemiology and Zoonosis of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Yuanmingyuan Xilu No. 2, Haidian District, Beijing 100193, China
| | - Tong Lei Wu
- Key Laboratory of Animal Epidemiology and Zoonosis of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Yuanmingyuan Xilu No. 2, Haidian District, Beijing 100193, China
| | - Jie Cheng
- Animal Science and Technology College, Beijing University of Agriculture, Beinong Road 7, Huilongguan, Changping District, Beijing 102206, China
| | - Lin Lu
- Animal Science and Technology College, Beijing University of Agriculture, Beinong Road 7, Huilongguan, Changping District, Beijing 102206, China.
| | - Qing Min Wu
- Key Laboratory of Animal Epidemiology and Zoonosis of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Yuanmingyuan Xilu No. 2, Haidian District, Beijing 100193, China.
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12
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Interferon-gamma responses in sheep exposed to virulent and attenuated Brucella melitensis strains. Vet Immunol Immunopathol 2014; 160:123-8. [PMID: 24814244 DOI: 10.1016/j.vetimm.2014.03.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2014] [Revised: 03/21/2014] [Accepted: 03/26/2014] [Indexed: 11/22/2022]
Abstract
Antibody detection is the basis of large-scale sheep brucellosis diagnosis because of its sensitivity and specificity. In contrast, information on the cellular mediated immune (CMI) response triggered after Brucella melitensis infection, a cornerstone in the protection against this pathogen, is more limited, particularly regarding the effect of the virulence of the infecting strain in the induced CMI reaction. Here, the interferon-gamma (IFN-γ) profiles evoked after exposure by different routes to virulent (H38) and attenuated (Rev.1) B. melitensis strains in 14 pregnant sheep and 87 ewe lambs, respectively, were characterized accounting for different host-related factors, and compared with their serological response and with the basal IFN-γ responses observed in 155 animals non exposed to Brucella. No significant differences in the IFN-γ response of Rev.1 vaccinated animals depending on the inoculation route was observed, in contrast with their serological results. Response in H38-challenged followed a similar trend although peaked later, and an effect of the abortion on the IFN-γ response was detected. This information could help to understand the interaction bacteria-host that leads to its intracellular survival and could be useful for the design of new diagnostic approaches.
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Pérez-Sancho M, Adone R, García-Seco T, Tarantino M, Diez-Guerrier A, Drumo R, Francia M, Domínguez L, Pasquali P, Álvarez J. Evaluation of the immunogenicity and safety of Brucella melitensis B115 vaccination in pregnant sheep. Vaccine 2014; 32:1877-81. [PMID: 24508034 DOI: 10.1016/j.vaccine.2014.01.070] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2013] [Revised: 01/14/2014] [Accepted: 01/21/2014] [Indexed: 11/25/2022]
Abstract
In spite of its limitations, Rev.1 is currently recognized as the most suitable vaccine against Brucella melitensis (the causative agent of ovine and caprine brucellosis). However, its use is limited to young animals when test-and-slaughter programs are in place because of the occurrence of false positive-reactions due to Rev.1 vaccination. The B. melitensis B115 rough strain has demonstrated its efficacy against B. melitensis virulent strains in the mouse model, but there is a lack of information regarding its potential use in small ruminants for brucellosis control. Here, the safety and immune response elicited by B115 strain inoculation were evaluated in pregnant ewes vaccinated at their midpregnancy. Vaccinated (n=8) and non-vaccinated (n=3) sheep were periodically sampled and analyzed for the 108 days following inoculations using tests designed for the detection of the response elicited by the B115 strain and routine serological tests for brucellosis [Rose Bengal Test (RBT), Complement Fixation Test (CFT) and blocking ELISA (ELISAb)]. Five out of the 8 vaccinated animals aborted, indicating a significant abortifacient effect of B115 inoculation at midpregnancy. In addition, a smooth strain was recovered from one vaccinated animal, suggesting the occurrence of an in vivo reversion phenomenon. Only one animal was positive in both RBT and CFT simultaneously (91 days after vaccination) confirming the lack of induction of cross-reacting antibody responses interfering with routine brucellosis diagnostic tests in most B115-vaccinated animals.
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Affiliation(s)
- Marta Pérez-Sancho
- Centro VISAVET, Universidad Complutense de Madrid, Avenida Puerta de Hierro, s/n, PC 28040, Madrid, Spain; Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad Complutense de Madrid, Avenida Puerta de Hierro, s/n, PC 28040, Madrid, Spain.
| | - Rosanna Adone
- Unit Prophylaxis and Control of Bacterial Zoonoses, Department of Veterinary Public Health and Food Safety, Istituto Superiore di Sanità, Viale Regina Elena 299, PC 00161 Rome, Italy.
| | - Teresa García-Seco
- Centro VISAVET, Universidad Complutense de Madrid, Avenida Puerta de Hierro, s/n, PC 28040, Madrid, Spain; Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad Complutense de Madrid, Avenida Puerta de Hierro, s/n, PC 28040, Madrid, Spain.
| | - Michaela Tarantino
- Unit Prophylaxis and Control of Bacterial Zoonoses, Department of Veterinary Public Health and Food Safety, Istituto Superiore di Sanità, Viale Regina Elena 299, PC 00161 Rome, Italy.
| | - Alberto Diez-Guerrier
- Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad Complutense de Madrid, Avenida Puerta de Hierro, s/n, PC 28040, Madrid, Spain.
| | - Rosanna Drumo
- Unit Prophylaxis and Control of Bacterial Zoonoses, Department of Veterinary Public Health and Food Safety, Istituto Superiore di Sanità, Viale Regina Elena 299, PC 00161 Rome, Italy.
| | - Massimiliano Francia
- Unit Prophylaxis and Control of Bacterial Zoonoses, Department of Veterinary Public Health and Food Safety, Istituto Superiore di Sanità, Viale Regina Elena 299, PC 00161 Rome, Italy.
| | - Lucas Domínguez
- Centro VISAVET, Universidad Complutense de Madrid, Avenida Puerta de Hierro, s/n, PC 28040, Madrid, Spain; Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad Complutense de Madrid, Avenida Puerta de Hierro, s/n, PC 28040, Madrid, Spain.
| | - Paolo Pasquali
- Unit Prophylaxis and Control of Bacterial Zoonoses, Department of Veterinary Public Health and Food Safety, Istituto Superiore di Sanità, Viale Regina Elena 299, PC 00161 Rome, Italy.
| | - Julio Álvarez
- Centro VISAVET, Universidad Complutense de Madrid, Avenida Puerta de Hierro, s/n, PC 28040, Madrid, Spain; Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Ctra. Colmenar Viejo, km. 9.100, PC 28034 Madrid, Spain.
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Kim D, Park J, Kim SJ, Soh YM, Kim HM, Oh BH, Song JJ. Brucella immunogenic BP26 forms a channel-like structure. J Mol Biol 2013; 425:1119-26. [PMID: 23353825 DOI: 10.1016/j.jmb.2013.01.015] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2012] [Revised: 12/31/2012] [Accepted: 01/14/2013] [Indexed: 11/29/2022]
Abstract
An outer membrane protein BP26/OMP28 of Brucella, BP26, is identified as a major immunodominant antigen and widely used as a diagnostic marker and for vaccination against Brucellosis. BP26 belongs to the family of proteins that contains a SIMPL (signaling molecule that associates with the mouse pelle-like kinase) domain, whose structure and function have been unknown. Here, we present the crystal structure of BP26 revealing that 16 BP26 molecules form a novel channel-like assembly as also shown by electron microscopy analysis. Eight BP26 molecules forming a ring structure contain a hole at the center of the octamer, and another octamer interacts with each other to form a channel having a large internal cavity. BP26 is found to be structurally similar to a bacteriophage protein involved in infection, implicating that BP26 might function during Brucella infection. In addition, the BP26 structure suggests that the protein functions as a multimeric channel-like form and provides a canonical model for the SIMPL domains.
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Affiliation(s)
- Daegeun Kim
- Department of Biological Sciences, KI for the BioCentury, KAIST, 335 Gwahangno, Daejeon 305-701, Korea
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15
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Conde-Álvarez R, Arce-Gorvel V, Gil-Ramírez Y, Iriarte M, Grilló MJ, Gorvel JP, Moriyón I. Lipopolysaccharide as a target for brucellosis vaccine design. Microb Pathog 2012; 58:29-34. [PMID: 23219811 DOI: 10.1016/j.micpath.2012.11.011] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2012] [Revised: 11/21/2012] [Accepted: 11/23/2012] [Indexed: 10/27/2022]
Abstract
The gram-negative bacteria of the genus Brucella are facultative intracellular parasites that cause brucellosis, a world wide-distributed zoonotic disease that represents a serious problem for animal and human health. There is no human-to-human contagion and, since there is no human vaccine, animal vaccination is essential to control brucellosis. However, current vaccines (all developed empirically) do not provide 100% protection and are infectious in humans. Attempts to generate new vaccines by obtaining mutants lacking the lipopolysaccharide O-polysaccharide, in purine metabolism or in Brucella type IV secretion system have not been successful. Here we propose a new approach to develop brucellosis vaccines based on the concept that Brucella surface molecules evade efficient detection by innate immunity, thus delaying protective Th1 responses and opening a time window to reach sheltered intracellular compartments. We showed recently that a branch of the core oligosaccharide section of Brucella lipopolysaccharide hampers recognition by TLR4-MD2. Mutation of glycosyltransferase WadC, involved in the synthesis of this branch, results in a lipopolysaccharide that, while keeping the O-polysaccharide essential for optimal protection, shows a truncated core, is more efficiently recognized by MD2 and triggers an increased cytokine response. In keeping with this, the wadC mutant is attenuated in dendritic cells and mice. In the mouse model of brucellosis vaccines, the Brucella abortus wadC mutant conferred protection similar to that provided by S19, the best cattle vaccine available. The properties of the wadC mutant provide the proof of concept for this new approach and open the way for more effective brucellosis vaccines.
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Affiliation(s)
- Raquel Conde-Álvarez
- Institute for Tropical Health and Departamento de Microbiología y Parasitología, Universidad de Navarra, Pamplona, Spain
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Cain AA, Kosara R, Gibas CJ. GenoSets: visual analytic methods for comparative genomics. PLoS One 2012; 7:e46401. [PMID: 23056299 PMCID: PMC3463605 DOI: 10.1371/journal.pone.0046401] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2012] [Accepted: 09/04/2012] [Indexed: 11/29/2022] Open
Abstract
Many important questions in biology are, fundamentally, comparative, and this extends to our analysis of a growing number of sequenced genomes. Existing genomic analysis tools are often organized around literal views of genomes as linear strings. Even when information is highly condensed, these views grow cumbersome as larger numbers of genomes are added. Data aggregation and summarization methods from the field of visual analytics can provide abstracted comparative views, suitable for sifting large multi-genome datasets to identify critical similarities and differences. We introduce a software system for visual analysis of comparative genomics data. The system automates the process of data integration, and provides the analysis platform to identify and explore features of interest within these large datasets. GenoSets borrows techniques from business intelligence and visual analytics to provide a rich interface of interactive visualizations supported by a multi-dimensional data warehouse. In GenoSets, visual analytic approaches are used to enable querying based on orthology, functional assignment, and taxonomic or user-defined groupings of genomes. GenoSets links this information together with coordinated, interactive visualizations for both detailed and high-level categorical analysis of summarized data. GenoSets has been designed to simplify the exploration of multiple genome datasets and to facilitate reasoning about genomic comparisons. Case examples are included showing the use of this system in the analysis of 12 Brucella genomes. GenoSets software and the case study dataset are freely available at http://genosets.uncc.edu. We demonstrate that the integration of genomic data using a coordinated multiple view approach can simplify the exploration of large comparative genomic data sets, and facilitate reasoning about comparisons and features of interest.
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Affiliation(s)
- Aurora A. Cain
- Department of Bioinformatics and Genomics, The University of North Carolina at Charlotte, Charlotte, North Carolina, United States of America
| | - Robert Kosara
- Department of Computer Science, The University of North Carolina at Charlotte, Charlotte, North Carolina, United States of America
| | - Cynthia J. Gibas
- Department of Bioinformatics and Genomics, The University of North Carolina at Charlotte, Charlotte, North Carolina, United States of America
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Martins RDC, Irache JM, Gamazo C. Acellular vaccines for ovine brucellosis: a safer alternative against a worldwide disease. Expert Rev Vaccines 2012; 11:87-95. [PMID: 22149711 DOI: 10.1586/erv.11.172] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Ovine brucellosis is a very contagious zoonotic disease distributed worldwide and constitutes a very important zoosanitary and economic problem. The control of the disease includes animal vaccination and slaughter of infected flocks. However, the commercially available vaccine in most countries is based on the attenuated strain Brucella melitensis Rev 1, which presents important safety drawbacks. This review is focused on the most recent and promising acellular vaccine proposals.
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Affiliation(s)
- Raquel Da Costa Martins
- Department of Pharmaceutics and Pharmaceutical Technology, University of Navarra, C/Irunlarrea, 1 31008-Pamplona, Spain
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18
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Qiu J, Wang W, Wu J, Zhang H, Wang Y, Qiao J, Chen C, Gao GF, Allain JP, Li C. Characterization of periplasmic protein BP26 epitopes of Brucella melitensis reacting with murine monoclonal and sheep antibodies. PLoS One 2012; 7:e34246. [PMID: 22457830 PMCID: PMC3311636 DOI: 10.1371/journal.pone.0034246] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2011] [Accepted: 02/24/2012] [Indexed: 11/22/2022] Open
Abstract
More than 35,000 new cases of human brucellosis were reported in 2010 by the Chinese Center for Disease Control and Prevention. An attenuated B. melitensis vaccine M5-90 is currently used for vaccination of sheep and goats in China. In the study, a periplasmic protein BP26 from M5-90 was characterized for its epitope reactivity with mouse monoclonal and sheep antibodies. A total of 29 monoclonal antibodies (mAbs) against recombinant BP26 (rBP26) were produced, which were tested for reactivity with a panel of BP26 peptides, three truncated rBP26 and native BP26 containing membrane protein extracts (NMP) of B. melitensis M5-90 in ELISA and Western-Blot. The linear, semi-conformational and conformational epitopes from native BP26 were identified. Two linear epitopes recognized by mAbs were revealed by 28 of 16mer overlapping peptides, which were accurately mapped as the core motif of amino acid residues 93DRDLQTGGI101 (position 93 to 101) or residues 104QPIYVYPD111, respectively. The reactivity of linear epitope peptides, rBP26 and NMP was tested with 137 sheep sera by ELISAs, of which the two linear epitopes had 65–70% reactivity and NMP 90% consistent with the results of a combination of two standard serological tests. The results were helpful for evaluating the reactivity of BP26 antigen in M5-90.
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Affiliation(s)
- Jinlang Qiu
- Department of Transfusion Medicine, Southern Medical University, Guangzhou, China
| | - Wenjing Wang
- Department of Transfusion Medicine, Southern Medical University, Guangzhou, China
| | - Jingbo Wu
- Department of Transfusion Medicine, Southern Medical University, Guangzhou, China
| | - Hui Zhang
- Animal Science and Technology College, Shihezi University, Shihezi, China
| | - Yuanzhi Wang
- Animal Science and Technology College, Shihezi University, Shihezi, China
| | - Jun Qiao
- Animal Science and Technology College, Shihezi University, Shihezi, China
| | - Chuangfu Chen
- Animal Science and Technology College, Shihezi University, Shihezi, China
| | - Goege F. Gao
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences (CAS), Beijing, China
| | - Jean-Pierre Allain
- Department of Transfusion Medicine, Southern Medical University, Guangzhou, China
- Department of Haematology, University of Cambridge, Cambridge, UK
| | - Chengyao Li
- Department of Transfusion Medicine, Southern Medical University, Guangzhou, China
- * E-mail:
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19
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Liu WX, Hu S, Qiao ZJ, Chen WY, Liu LT, Wang FK, Hua RH, Bu ZG, Li XR. Expression, purification, and improved antigenic specificity of a truncated recombinant bp26 protein of Brucella melitensis M5-90: a potential antigen for differential serodiagnosis of brucellosis in sheep and goats. Biotechnol Appl Biochem 2011; 58:32-8. [PMID: 21446957 DOI: 10.1002/bab.11] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Antibodies produced in animals vaccinated using live attenuated vaccines against Brucella spp. are indistinguishable using current conventional serological tests from those produced in infected animals. One potential approach is to develop marker vaccines in which specific genes have been deleted from parental vaccine strains that show good immunogenicity and vaccine efficacy. Corresponding methods of detection for antibodies raised by the marker vaccine should also be developed. A specific fragment of the bp26 gene of Brucella melitensis M5-90 was cloned into vector pQE32 to construct the recombinant plasmid (pQE32-rΔbp26). It was used to transform Escherichia coli M15 (pREP4) host cells, which expressed the rΔbp26 protein. Subsequently, the recombinant protein was purified by immobilized metal affinity chromatography and size-exclusion chromatography. The results of sodium dodecyl sulfate-polyacrylamide gel electrophoresis showed that the purified rΔbp26 protein was represented by only one band, with a molecular weight of 14 kDa, and it showed good antigenic specificity on western blot and enzyme-linked immunosorbent assay (ELISA). The purified rΔbp26 protein was intended to be used as an antigen to develop a novel ELISA to differentiate animals vaccinated with bp26 mutants of Brucella spp. from those infected naturally and those vaccinated with the parental vaccine strains.
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Affiliation(s)
- Wen-xing Liu
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, P R China
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20
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Control and eradication of Brucella melitensis infection in sheep and goats. Vet Clin North Am Food Anim Pract 2011; 27:95-104. [PMID: 21215893 DOI: 10.1016/j.cvfa.2010.10.003] [Citation(s) in RCA: 81] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Brucella melitensis is the main etiological agent of brucellosis in sheep and goats, and is also the main agent responsible for human brucellosis, a predominantly occupational disease related to professions in direct contact with livestock. As there is currently no viable method of preventing human brucellosis to safeguard people attention must be directed toward effectively controlling the disease in sheep and goats. This review focuses on the different strategies in different socioeconomic and epidemiologic situations that can be applied to either control or eradicate brucellosis in sheep and goats.
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21
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Chacón-Díaz C, Muñoz-Rodríguez M, Barquero-Calvo E, Guzmán-Verri C, Chaves-Olarte E, Grilló MJ, Moreno E. The use of green fluorescent protein as a marker for Brucella vaccines. Vaccine 2011; 29:577-82. [DOI: 10.1016/j.vaccine.2010.09.109] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2010] [Revised: 08/04/2010] [Accepted: 09/26/2010] [Indexed: 11/27/2022]
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22
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Al-Mariri A. Protection of BALB/c mice against Brucella melitensis 16M infection induced by vaccination with live Escherchia coli expression Brucella P39 protein. Vaccine 2010; 28:1766-70. [DOI: 10.1016/j.vaccine.2009.12.012] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2009] [Revised: 11/25/2009] [Accepted: 12/07/2009] [Indexed: 11/17/2022]
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23
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Kaushik P, Singh DK, Kumar SV, Tiwari AK, Shukla G, Dayal S, Chaudhuri P. Protection of mice against Brucella abortus 544 challenge by vaccination with recombinant OMP28 adjuvanted with CpG oligonucleotides. Vet Res Commun 2009; 34:119-32. [PMID: 20013309 DOI: 10.1007/s11259-009-9337-x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/26/2009] [Indexed: 11/24/2022]
Abstract
Brucella abortus, a gram negative, facultative intracellular pathogen causes brucellosis in many animal species and humans. Although live, attenuated vaccines are available against this infection, they suffer from certain limitations. Therefore, the development of an effective subunit vaccine against brucellosis is an area of intense research. The outer membrane proteins (OMPs) of Brucella species have been extensively studied for its immunogenicity and protective ability. We have investigated the potential of CpG ODN to enhance the immunogenicity and protective efficacy of recombinant 28 kDa outer membrane protein (rOMP28) of Brucella melitensis. The study demonstrated vigorous immunoglobulin G (IgG) response of OMP28. The administration of rOMP28 with CpG caused increased cell mediated immune response in terms of induced IgG2a, T-cell proliferation and up-regulation of type I cytokine expression. In contrast, the free antigen suppressed the interferon gamma (type I cytokine) production on in-vitro stimulation of spleenocytes. The result indicates the role of OMP28 in the down regulation of IFN-gamma production. Moreover, the B. abortus S-19 vaccinated mice showed highest production of IL-4 and IFN-gamma. The protective ability of the antigen was evaluated by systemic bacterial clearance after challenging the mouse with B. abortus 544 pathogen. The level of protection was significant in rOMP28+CpG treated mice but was lower than the required level. The results of the present study indicate that rOMP28 could be an immunogen capable of inducing both humoral and cellular immune response. The humoral response was biased towards Th1 type when it was co-administered with CpG.
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Affiliation(s)
- Purushottam Kaushik
- Division of Veterinary Public Health, Bihar Veterinary College, Patna, Bihar, India.
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Protection levels in vaccinated heifers with experimental vaccines Brucella abortus M1-luc and INTA 2. Vet Microbiol 2008; 132:302-11. [DOI: 10.1016/j.vetmic.2008.05.003] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2007] [Revised: 04/08/2008] [Accepted: 05/06/2008] [Indexed: 11/18/2022]
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Grilló MJ, Marín CM, Barberán M, de Miguel MJ, Laroucau K, Jacques I, Blasco JM. Efficacy of bp26 and bp26/omp31 B. melitensis Rev.1 deletion mutants against Brucella ovis in rams. Vaccine 2008; 27:187-91. [PMID: 19007836 DOI: 10.1016/j.vaccine.2008.10.065] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2008] [Revised: 10/16/2008] [Accepted: 10/21/2008] [Indexed: 10/21/2022]
Abstract
Brucella melitensis Rev.1 is the most effective vaccine against B. ovis infection in sheep but induces antibodies interfering with B. melitensis diagnosis. Brucella BP26 and Omp31 proteins are differential diagnostic antigens. Single or double bp26 and omp31 Rev.1 deletion mutants have been proven effective against B. melitensis in sheep. Here, the CGV26 (deleted in bp26 gene) and CGV2631 (deleted in both bp26 and omp31 genes) mutants have been tested for efficacy against B. ovis in rams. Either inoculated subcutaneously or conjunctivally, both mutants conferred significant protection against B. ovis. The protection induced by CGV26 was similar to that of Rev.1 but significantly higher than that conferred by CGV2631. In conclusion, the CGV26 mutant, in association with the adequate diagnostic strategy, could be a useful alternative to Rev.1 for sheep vaccination against B. ovis infections in those countries performing simultaneously B. melitensis and B. ovis eradication campaigns.
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Affiliation(s)
- M J Grilló
- Instituto de Agrobiotecnología, CSIC-UPNA-Gobierno de Navarra, Carretera de Mutilva, s/n. 31192, Mutilva Baja, Navarra, Spain.
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Suraud V, Jacques I, Olivier M, Guilloteau LA. Acute infection by conjunctival route with Brucella melitensis induces IgG+ cells and IFN-gamma producing cells in peripheral and mucosal lymph nodes in sheep. Microbes Infect 2008; 10:1370-8. [PMID: 18761416 DOI: 10.1016/j.micinf.2008.08.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2008] [Revised: 08/04/2008] [Accepted: 08/06/2008] [Indexed: 11/30/2022]
Abstract
The early distribution of Brucella melitensis and the immune response induced in lymphoid tissues and lymph nodes (LN) draining the upper respiratory tract were analysed in sheep. An experimental acute infection was performed by inoculating the sheep with the virulent H38 strain of B. melitensis by the conjunctival route. The infection was rapidly controlled at the site of inoculation but resulted in a local and systemic dissemination of brucellae mainly in the pharyngeal tonsil, local and peripheral LN and the spleen. The control of the infection was associated with the induction of a specific immune response characterized by an increase in IgG+ cells, the production of IFN-gamma and IL-10 by cells from draining parotid, retropharyngeal and submaxillary LN, but also from more distant peripheral prescapular and mesenteric LN. IFN-gamma was produced by CD4+, CD8+ and CD4(-)CD8(-)gammadelta(-) cells and probably contributed to the control of both local and systemic infection.
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Affiliation(s)
- Vanessa Suraud
- UR 1282 - Unité d'Infectiologie Animale et Santé Publique, Institut National de Recherche Agronomique, Centre de Tours-Nouzilly, 37380 Nouzilly, France
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Battisti JM, Smitherman LS, Sappington KN, Parrow NL, Raghavan R, Minnick MF. Transcriptional regulation of the heme binding protein gene family of Bartonella quintana is accomplished by a novel promoter element and iron response regulator. Infect Immun 2007; 75:4373-85. [PMID: 17576755 PMCID: PMC1951173 DOI: 10.1128/iai.00497-07] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
We previously identified a five-member family of hemin-binding proteins (Hbp's) of Bartonella quintana that bind hemin on the outer surface but share no homology with known bacterial heme receptors. Subsequently, we demonstrated that expression of the hbp family is significantly influenced by oxygen, heme, and temperature conditions encountered by the pathogen in the human host and the body louse vector; e.g., we observed a dramatic (>100-fold) increase in hbpC transcript levels in response to the "louse-like" temperature of 30 degrees C. The goal of the present study was to identify a transcription factor(s) involved in the coordinated and differential regulation of the hbp family. First, we used quantitative real-time PCR (qRT-PCR) to show that the same environmental conditions generate parallels in the transcript profiles of four candidate transcriptional regulators (Irr, Fur, RirA, and BatR) described in the order Rhizobiales, with the greatest overall change in the transcription of irr (a >5-fold decrease) at a "louse-like" temperature, suggesting that Irr may function as an hbpC repressor. Second, a B. quintana strain hyperexpressing Irr was constructed; it exhibits a "bloodstream-like" hbp transcript profile in the absence of an environmental stimulus (i.e., hbpC is repressed and hbpA, hbpD, and hbpE mRNAs are relatively abundant). Furthermore, when this strain is grown at a "louse-like" temperature, an inversion of the transcript profile occurs, where derepression of hbpC and repression of hbpA, hbpD, and hbpE are readily evident, strongly suggesting that Irr and temperature influence hbp family expression. Third, electrophoretic mobility shift analyses show that recombinant Irr binds specifically to the hbpC promoter region at a sequence that is highly conserved in Bartonella hbp genes, which we designated the hbp family box, or "H-box." Fourth, we used the H-box to search the B. quintana genome and discovered a number of intriguing open reading frames, e.g., five members of a six-member family of cohemolysin autotransporters. Finally, qRT-PCR data regarding the effects of Fur and RirA overexpression on the hbp family are provided; they show that Fur's effect on the hbp family is relatively minor but RirA generates a "bloodstream-like" hbp transcript profile in the absence of an environmental stimulus, as observed for the Irr-hyperexpressing strain.
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Affiliation(s)
- James M Battisti
- Division of Biological Sciences, The University of Montana, Missoula, MT 59812, USA
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