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Bulashev A, Akibekov O, Syzdykova A, Suranshiyev Z, Ingirbay B. Use of recombinant Brucella outer membrane proteins 19, 25, and 31 for serodiagnosis of bovine brucellosis. Vet World 2020; 13:1439-1447. [PMID: 32848322 PMCID: PMC7429377 DOI: 10.14202/vetworld.2020.1439-1447] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Accepted: 06/05/2020] [Indexed: 11/16/2022] Open
Abstract
Background and Aim Brucellosis remains one of the most common zoonoses. The current anti-brucellosis measures are largely deemed ineffective due to a lack of specificity of conventional serological tests. This study evaluated the use of Brucella outer membrane protein (Omp)19 for serodiagnostic testing. Materials and Methods The antigenicity of recombinant Brucella Omp19, Omp25, and Omp31 was examined in serum samples from mice and rabbits immunized with Omp19 or Brucella abortus 19 whole cell (WC) and 12 and 152 cows experimentally or naturally infected with brucellosis, respectively. Serum samples were collected from 151 cows that were vaccinated with B. abortus 19 and 12 unvaccinated heifers that were maintained on a brucellosis-free farm. Results Immunization with Omp19 resulted in antibody production in mice after a single injection without the use of adjuvant. Serum antibodies obtained from rabbits immunized with inactivated B. abortus strain 19 WC targeted Omps by enzyme-linked immunosorbent assay (ELISA) and Western blot. Antibodies targeting Omp19 were identified in all B. abortus strain 544 experimentally infected cows at day 14 post-inoculation (p.i.); Omp25 was detected by ELISA at day 28 p.i., while an ELISA targeting Omp31 was negative for 25% of cows at this time point. Omp19 and Omp25 were readily detected by sera from cows from a new epizootic focus. Antibodies recognizing Omps were also detected in >50% of the animals maintained in a brucellosis-free herd at 10 months after vaccination. Conclusion Brucella Omp19 in combination with Omp25 and Omp31 may be utilized as target antigens in an ELISA designed for serological testing of unvaccinated cattle.
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Affiliation(s)
- Aitbay Bulashev
- Department of Microbiology and Biotechnology, Faculty of Veterinary and Livestock Technology, S. Seifullin Kazakh Agrotechnical University, Nur-Sultan, Kazakhstan
| | - Orken Akibekov
- Department of Microbiology and Biotechnology, Faculty of Veterinary and Livestock Technology, S. Seifullin Kazakh Agrotechnical University, Nur-Sultan, Kazakhstan
| | - Alfiya Syzdykova
- Department of Microbiology and Biotechnology, Faculty of Veterinary and Livestock Technology, S. Seifullin Kazakh Agrotechnical University, Nur-Sultan, Kazakhstan
| | - Zhanbolat Suranshiyev
- Department of Microbiology and Biotechnology, Faculty of Veterinary and Livestock Technology, S. Seifullin Kazakh Agrotechnical University, Nur-Sultan, Kazakhstan
| | - Bakytkali Ingirbay
- Department of Microbiology and Biotechnology, Faculty of Veterinary and Livestock Technology, S. Seifullin Kazakh Agrotechnical University, Nur-Sultan, Kazakhstan
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Im YB, Park WB, Jung M, Kim S, Yoo HS. Comparative Analysis of Immune Responses to Outer Membrane Antigens OMP10, OMP19, and OMP28 of Brucella abortus. Jpn J Infect Dis 2018; 71:197-204. [PMID: 29709972 DOI: 10.7883/yoken.jjid.2017.019] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Brucella infection is accompanied by cytokine production, which serves as an important factor to evaluate the innate and adaptive immune responses. Several researchers have been investigating the mechanisms involved in Brucella infection in the host. Here, we conducted an analytical study to define pathogenic pathways and immune mechanisms involved in Brucella infection by investigating the antigenic efficacy of recombinant outer membrane protein 10 (rOMP10), outer membrane protein 19 (rOMP19), and outer membrane protein 28 (rOMP28) in vitro and in vivo upon stimulation/immunization. Cytokine production was analyzed by nitric oxide (NO) assay and enzyme-linked immunosorbent assay (ELISA) after stimulation of RAW 264.7 cells and naive splenocytes with the recombinant proteins. Our results show that levels of NO, tumor necrosis factor (TNF)-α, and interleukin (IL)-6 increased in RAW 264.7 cells in a time-dependent manner following recombinant protein stimulation. In contrast, levels of interferon (IFN)-γ and IL-2 increased in naive splenocytes after stimulation with proteins. ELISA and ELISpot assays were performed after immunization of mice with recombinant proteins. rOMP28 greatly increased IFN-γ, IL-2, and TNF-α levels than IL-4 and IL-6 levels in vitro. Of the recombinant proteins, rOMP19 elicited a mixed Th1/Th2 immune response by increasing the number of IgG-secreting cells in vivo.
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Affiliation(s)
- Young Bin Im
- Department of Infectious Diseases, College of Veterinary Medicine, Seoul National University
| | - Woo Bin Park
- Department of Infectious Diseases, College of Veterinary Medicine, Seoul National University
| | - Myunghwan Jung
- Department of Infectious Diseases, College of Veterinary Medicine, Seoul National University
| | - Suk Kim
- College of Veterinary Medicine, Gyeongsang National University
| | - Han Sang Yoo
- Department of Infectious Diseases, College of Veterinary Medicine, Seoul National University.,Institute of Green Bio Science and Technology, Seoul National University
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Contreras-Rodriguez A, Ramirez-Zavala B, Contreras A, Schurig GG, Sriranganathan N, Lopez-Merino A. Purification and characterization of an immunogenic aminopeptidase of Brucella melitensis. Infect Immun 2003; 71:5238-44. [PMID: 12933870 PMCID: PMC187343 DOI: 10.1128/iai.71.9.5238-5244.2003] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
An immunogenic aminopeptidase was purified from Brucella melitensis strain VTRM1. The purification procedure consisted of ammonium sulfate fractionation and three chromatographic steps. This procedure resulted in a yield of 29% and a 144-fold increase in specific activity. The aminopeptidase appeared to be a monomeric enzyme with a molecular mass of 96 kDa and an isoelectric point of 4.8. Its activity was optimal at pH 7.0 at 40 degrees C. The enzyme was strongly inhibited by EDTA, 1,10-phenathroline, and divalent cations (Zn(2+) and Hg(2+)), suggesting that this protein was a metalloaminopeptidase. The enzyme showed preference for alanine at the N termini of aminoacyl derivatives. The K(m) values for L-alanine-p-nitroanilide (Ala-pNA) and Lys-pNA were 0.35 and 0.18 mM, respectively. The N-terminal sequence of aminopeptidase was used for a homologous search in the genomes of B. melitensis 16M and Brucella suis 1330. The analysis revealed an exact match of the probe sequence (36 bp) with an open reading frame of 2,652 bp encoding a protein predicted to be alanyl aminopeptidase (aminopeptidase N). Collectively, these data suggest designation of the B. melitensis enzyme as an aminopeptidase N. The aminopeptidase was recognized by sera from patients with acute and chronic brucellosis, suggesting that the enzyme may have important diagnostic implications.
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Ko J, Splitter GA. Molecular host-pathogen interaction in brucellosis: current understanding and future approaches to vaccine development for mice and humans. Clin Microbiol Rev 2003; 16:65-78. [PMID: 12525425 PMCID: PMC145300 DOI: 10.1128/cmr.16.1.65-78.2003] [Citation(s) in RCA: 210] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Brucellosis caused by Brucella spp. is a major zoonotic disease. Control of brucellosis in agricultural animals is a prerequisite for the prevention of this disease in human beings. Recently, Brucella melitensis was declared by the Centers for Disease Control and Prevention to be one of three major bioterrorist agents due to the expense required for the treatment of human brucellosis patients. Also, the economic agricultural loss due to bovine brucellosis emphasizes the financial impact of brucellosis in society. Thus, vaccination might efficiently solve this disease. Currently, B. abortus RB51 and B. melitensis REV.1 are used to immunize cattle and to immunize goats and sheep, respectively, in many countries. However, these genetically undefined strains still induce abortion and persistent infection, raising questions of safety and efficiency. In fact, the REV.1 vaccine is quite virulent and apparently unstable, creating the need for improved vaccines for B. melitensis. In addition, Brucella spp. may or may not provide cross-protection against infection by heterologous Brucella species, hampering the acceleration of vaccine development. This review provides our current understanding of Brucella pathogenesis and host immunity for the development of genetically defined efficient vaccine strains. Additionally, conditions required for an effective Brucella vaccine strain as well as the future research direction needed to investigate Brucella pathogenesis and host immunity are postulated.
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Affiliation(s)
- Jinkyung Ko
- Laboratory of Cellular and Molecular Immunology, Department of Animal Health and Biomedical Sciences, University of Wisconsin, Madison, Wisconsin 53706, USA
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Tibor A, Wansard V, Bielartz V, Delrue RM, Danese I, Michel P, Walravens K, Godfroid J, Letesson JJ. Effect of omp10 or omp19 deletion on Brucella abortus outer membrane properties and virulence in mice. Infect Immun 2002; 70:5540-6. [PMID: 12228280 PMCID: PMC128365 DOI: 10.1128/iai.70.10.5540-5546.2002] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The distinctive properties of Brucella outer membrane have been considered to be critical for Brucella sp. virulence. Among the outer membrane molecules possibly related to these properties, Omp10 and Omp19 are immunoreactive outer membrane lipoproteins. Moreover, these proteins of Brucella could constitute a new family of outer membrane proteins specifically encountered in the family RHIZOBIACEAE: We evaluated the impact of omp10 or omp19 deletion on Brucella abortus outer membrane properties and virulence in mice. The omp10 mutant was dramatically attenuated for survival in mice and was defective for growth in minimal medium but was not impaired in intracellular growth in vitro, nor does it display clear modification of the outer membrane properties. Significantly fewer brucellae were recovered from the spleens of mice infected with the omp19 mutant than from those of mice infected with the parent strain at 4 and 8 weeks postinfection. The omp19 mutant exhibited an increase in sensitivity to the polycation polymyxin B and to sodium deoxycholate. These results indicate that inactivation of the omp19 gene alters the outer membrane properties of B. abortus.
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Affiliation(s)
- Anne Tibor
- Unité de Recherche en Biologie Moléculaire, Facultés Universitaires Notre-Dame de la Paix, B-5000 Namur, Belgium.
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Vemulapalli R, Cravero S, Calvert CL, Toth TE, Sriranganathan N, Boyle SM, Rossetti OL, Schurig GG. Characterization of specific immune responses of mice inoculated with recombinant vaccinia virus expressing an 18-kilodalton outer membrane protein of Brucella abortus. CLINICAL AND DIAGNOSTIC LABORATORY IMMUNOLOGY 2000; 7:114-8. [PMID: 10618289 PMCID: PMC95834 DOI: 10.1128/cdli.7.1.114-118.2000] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Using the shuttle vector pMCO2 and the vaccinia virus wild-type WR strain, we constructed a recombinant virus expressing an 18-kDa outer membrane protein of Brucella abortus. BALB/c mice inoculated with this virus produced 18-kDa protein-specific antibodies, mostly of immunoglobulin G2a isotype, and in vitro stimulation of splenocytes from these mice with purified maltose binding protein-18-kDa protein fusion resulted in lymphocyte proliferation and gamma interferon production. However, these mice were not protected against a challenge with the virulent strain B. abortus 2308. Disruption of the 18-kDa protein's gene in vaccine strain B. abortus RB51 did not affect either the strain's protective capabilities or its in vivo attenuation characteristics. These observations suggest that the 18-kDa protein plays no role in protective immunity.
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Affiliation(s)
- R Vemulapalli
- Center for Molecular Medicine and Infectious Diseases, Department of Biomedical Sciences and Pathobiology, Virginia-Maryland Regional College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, USA
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Tibor A, Decelle B, Letesson JJ. Outer membrane proteins Omp10, Omp16, and Omp19 of Brucella spp. are lipoproteins. Infect Immun 1999; 67:4960-2. [PMID: 10456959 PMCID: PMC96837 DOI: 10.1128/iai.67.9.4960-4962.1999] [Citation(s) in RCA: 67] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The deduced sequences of the Omp10, Omp16, and Omp19 outer membrane proteins of Brucella spp. contain a potential bacterial lipoprotein processing sequence. After extraction with Triton X-114, these three proteins partitioned into the detergent phase. Processing of the three proteins is inhibited by globomycin, a specific inhibitor of lipoprotein signal peptidase. The three proteins were radioimmunoprecipitated from [(3)H]palmitic acid-labeled Brucella abortus lysates with monoclonal antibodies. These results demonstrate that Omp10, Omp16, and Omp19 are lipoproteins.
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Affiliation(s)
- A Tibor
- Laboratoire de Microbiologie et d'Immunologie, Facultés Universitaires Notre-Dame de la Paix, B-5000 Namur, Belgium.
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Cloeckaert A, Tibor A, Zygmunt MS. Brucella outer membrane lipoproteins share antigenic determinants with bacteria of the family Rhizobiaceae. CLINICAL AND DIAGNOSTIC LABORATORY IMMUNOLOGY 1999; 6:627-9. [PMID: 10391877 PMCID: PMC95742 DOI: 10.1128/cdli.6.4.627-629.1999] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Brucellae have been reported to be phylogenetically related to bacteria of the family Rhizobiaceae. In the present study, we used a panel of monoclonal antibodies (MAbs) to Brucella outer membrane proteins (OMPs) to determine the presence of common OMP epitopes in some representative bacteria of this family, i.e., Ochrobactrum anthropi, Phyllobacterium rubiacearum, Rhizobium leguminosarum, and Agrobacterium tumefaciens, and also in bacteria reported to serologically cross-react with brucella, i.e., Yersinia enterocolitica O:9, Escherichia coli O:157, and Salmonella urbana. In particular, most MAbs to the Brucella outer membrane lipoproteins Omp10, Omp16, and Omp19 cross-reacted with O. anthropi and P. rubiacearum, which are actually the closest relatives of brucellae. Some of them also cross-reacted, but to a lower extent, with R. leguminosarum and A. tumefaciens. The putative Omp16 and Omp19 homologs in these bacteria showed the same apparent molecular masses as their Brucella counterparts. None of the antilipoprotein MAbs cross-reacted with Y. enterocolitica O:9, E. coli O:157, or S. urbana.
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Affiliation(s)
- A Cloeckaert
- Laboratoire de Pathologie Infectieuse et Immunologie, Institut National de la Recherche Agronomique, 37380 Nouzilly, France.
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