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Li YA, Sun Y, Zhang Y, Wang X, Dieye Y, Wang S, Shi H. Salmonella enterica serovar Choleraesuis vector outperforms alum as an adjuvant, increasing a cross-protective immune response against Glaesserella parasuis. Vet Microbiol 2023; 287:109915. [PMID: 38000209 DOI: 10.1016/j.vetmic.2023.109915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 10/28/2023] [Accepted: 11/12/2023] [Indexed: 11/26/2023]
Abstract
The adjuvant and/or vector significantly affect a vaccine's efficacy. Although traditional adjuvants such as alum have contributed to vaccine development, deficiencies in the induction of cellular and mucosal immunity have limited their further promotion. Salmonella vectors have unique advantages for establishing cellular and mucosal immunity due to mucosal pathways of invasion and intracellular parasitism. In addition, Salmonella vectors can activate multiple innate immune pathways, thereby promoting adaptive immune responses. In this work, the attenuated Salmonella enterica serovar Choleraesuis (S. Choleraesuis) vector rSC0016 was used to deliver the conserved protective antigen HPS_06257 of Glaesserella parasuis (G. parasuis), generating a novel recombinant strain rSC0016(pS-HPS_06257). The rSC0016(pS-HPS_06257) can express and deliver the HPS_06257 protein to the lymphatic system of the host. In comparison to HPS_06257 adjuvanted with alum, rSC0016(pS-HPS_06257) significantly increased TLR4 and TLR5 activation in mice as well as the levels of proinflammatory cytokines. In addition, rSC0016 promoted a greater degree of maturation in bone marrow-derived dendritic cells (BMDCs) than alum. The specific humoral, mucosal, and cellular immune responses against HPS_06257 in mice immunized with rSC0016(pS-HPS_06257) were significantly higher than those of HPS_06257 adjuvanted with alum. HPS_06257 delivered by the S. Choleraesuis vector induces a Th1-biased Th1/Th2 mixed immune response, while HPS adjuvanted with alum can only induce a Th2-biased immune response. HPS_06257 adjuvanted with alum only causes opsonophagocytic activity (OPA) responses against a homologous strain (G. parasuis serotype 5, GPS5), whereas rSC0016(pS-HPS_06257) could generate cross-OPA responses against a homologous strain and a heterologous strain (G. parasuis serotype 12, GPS12). Ultimately, HPS_06257 adjuvanted with alum protected mice against lethal doses of GPS5 challenge by 60 % but failed to protect mice against lethal doses of GPS12. In contrast, mice immunized with rSC0016(pS-HPS_06257) had 100 % or 80 % survival when challenged with lethal doses of GPS5 or GPS12, respectively. Altogether, the S. Choleraesuis vector rSC0016 could potentially generate an improved innate immune response and an improved adaptive immunological response compared to the traditional alum adjuvant, offering a novel concept for the development of a universal G. parasuis vaccine.
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Affiliation(s)
- Yu-An Li
- College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, Jiangsu, China; Jiangsu Co-Innovation Center for the Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, China
| | - Yanni Sun
- College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, Jiangsu, China; Jiangsu Co-Innovation Center for the Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, China
| | - Yuqin Zhang
- College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, Jiangsu, China; Jiangsu Co-Innovation Center for the Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, China
| | - Xiaobo Wang
- College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, Jiangsu, China; Jiangsu Co-Innovation Center for the Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, China
| | - Yakhya Dieye
- Groupe de Recherche Biotechnologies Appliquées & Bioprocédés Environnementaux (GRBA-BE), École Supérieure Polytechnique, Université Cheikh Anta Diop, Dakar BP 5085, Senegal
| | - Shifeng Wang
- Department of Infectious Diseases and Immunology, College of Veterinary Medicine, University of Florida, Gainesville, FL 32611-0880, USA
| | - Huoying Shi
- College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, Jiangsu, China; Jiangsu Co-Innovation Center for the Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, China; Joint International Research Laboratory of Agriculture and Agri-Product Safety, Yangzhou University (JIRLAAPS), Yangzhou, China.
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López-Serrano S, Mahmmod YS, Christensen D, Ebensen T, Guzmán CA, Rodríguez F, Segalés J, Aragón V. Immune responses following neonatal vaccination with conserved F4 fragment of VtaA proteins from virulent Glaesserella parasuis adjuvanted with CAF®01 or CDA. Vaccine X 2023; 14:100330. [PMID: 37361051 PMCID: PMC10285277 DOI: 10.1016/j.jvacx.2023.100330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 06/07/2023] [Accepted: 06/07/2023] [Indexed: 06/28/2023] Open
Abstract
Glaesserella parasuis is a Gram-negative bacterium that colonizes the upper airways of swine, capable of causing a systemic infection called Glässer's disease. This disease is more frequent in young post-weaning piglets. Current treatments against G. parasuis infection are based on the use of antimicrobials or inactivated vaccines, which promote limited cross-protection against different serovars. For this reason, there is an interest in developing novel subunit vaccines with the capacity to confer effective protection against different virulent strains. Herein, we characterize the immunogenicity and the potential benefits of neonatal immunization with two different vaccine formulations based on the F4 polypeptide, a conserved immunogenic protein fragment from the virulence-associated trimeric autotransporters of virulent G. parasuis strains. With this purpose, we immunized two groups of piglets with F4 combined with cationic adjuvant CAF®01 or cyclic dinucleotide CDA. Piglets immunized with a commercial bacterin and non-immunized animals served as control groups. The vaccinated piglets received two doses of vaccine, at 14 days old and 21 days later. The immune response induced against the F4 polypeptide varied depending on the adjuvant used. Piglets vaccinated with the F4+CDA vaccine developed specific anti-F4 IgGs, biased towards the induction of IgG1 responses, whereas no anti-F4 IgGs were de novo induced after immunization with the CAF®01 vaccine. Piglets immunized with both formulations displayed balanced memory T-cell responses, evidenced upon in vitro re-stimulation of peripheral blood mononuclear cells with F4. Interestingly, pigs immunized with F4+CAF®01 controlled more efficiently a natural nasal colonization by a virulent serovar 4 G. parasuis that spontaneously occurred during the experimental procedure. According to the results, the immunogenicity and the protection afforded by F4 depend on the adjuvant used. F4 may represent a candidate to consider for a Glässer's disease vaccine and could contribute to a better understanding of the mechanisms involved in protection against virulent G. parasuis colonization.
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Affiliation(s)
- Sergi López-Serrano
- Unitat mixta d’Investigació IRTA-UAB en Sanitat Animal, Centre de Recerca en Sanitat Animal (CReSA), Campus de la Universitat Autònoma de Barcelona (UAB), Bellaterra 08193, Catalonia, Spain
- Institut de Recerca i Tecnologia Agroalimentàries, Programa de Sanitat Animal, Centre de Recerca en Sanitat Animal (CReSA), Campus de la Universitat Autònoma de Barcelona (UAB), Bellaterra 08193, Catalonia, Spain
- WOAH Collaborating Centre for the Research and Control of Emerging and Re-Emerging Swine Diseases in Europe (IRTA-CReSA), 08193 Bellaterra, Catalonia, Spain
| | - Yasser S. Mahmmod
- Department of Animal Medicine, Faculty of Veterinary Medicine, Zagazig University, Zagazig 44511, Egypt
- Section of Veterinary Sciences, Health Sciences Division, Al Ain Men’s College, Higher Colleges of Technology, Al Ain 17155, United Arab Emirates
| | - Dennis Christensen
- Department of Infectious Disease Immunology, Statens Serum Institut, Artillerivej 5, 2300 Copenhagen, Denmark
| | - Thomas Ebensen
- Department of Vaccinology and Applied Microbiology, Helmholtz Centre for Infection Research, Inhoffenstraße 7, 38124 Braunschweig, Germany
| | - Carlos A. Guzmán
- Department of Vaccinology and Applied Microbiology, Helmholtz Centre for Infection Research, Inhoffenstraße 7, 38124 Braunschweig, Germany
| | - Fernando Rodríguez
- Unitat mixta d’Investigació IRTA-UAB en Sanitat Animal, Centre de Recerca en Sanitat Animal (CReSA), Campus de la Universitat Autònoma de Barcelona (UAB), Bellaterra 08193, Catalonia, Spain
- Institut de Recerca i Tecnologia Agroalimentàries, Programa de Sanitat Animal, Centre de Recerca en Sanitat Animal (CReSA), Campus de la Universitat Autònoma de Barcelona (UAB), Bellaterra 08193, Catalonia, Spain
- WOAH Collaborating Centre for the Research and Control of Emerging and Re-Emerging Swine Diseases in Europe (IRTA-CReSA), 08193 Bellaterra, Catalonia, Spain
| | - Joaquim Segalés
- Unitat mixta d’Investigació IRTA-UAB en Sanitat Animal, Centre de Recerca en Sanitat Animal (CReSA), Campus de la Universitat Autònoma de Barcelona (UAB), Bellaterra 08193, Catalonia, Spain
- Institut de Recerca i Tecnologia Agroalimentàries, Programa de Sanitat Animal, Centre de Recerca en Sanitat Animal (CReSA), Campus de la Universitat Autònoma de Barcelona (UAB), Bellaterra 08193, Catalonia, Spain
- Departament de Sanitat i Anatomia animals. Facultat de Veterinària. Campus de la Universitat Autònoma de Barcelona (UAB), Bellaterra 08193, Catalonia, Spain
| | - Virginia Aragón
- Unitat mixta d’Investigació IRTA-UAB en Sanitat Animal, Centre de Recerca en Sanitat Animal (CReSA), Campus de la Universitat Autònoma de Barcelona (UAB), Bellaterra 08193, Catalonia, Spain
- Institut de Recerca i Tecnologia Agroalimentàries, Programa de Sanitat Animal, Centre de Recerca en Sanitat Animal (CReSA), Campus de la Universitat Autònoma de Barcelona (UAB), Bellaterra 08193, Catalonia, Spain
- WOAH Collaborating Centre for the Research and Control of Emerging and Re-Emerging Swine Diseases in Europe (IRTA-CReSA), 08193 Bellaterra, Catalonia, Spain
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GUO Z, JIA Y, HUANG C, ZHOU Y, CHEN X, YIN R, GUO Y, WANG L, YUAN J, WANG J, YAN P, YIN R. Immunogenicity and protection against Glaesserella parasuis serotype 13 infection after vaccination with recombinant protein LolA in mice. J Vet Med Sci 2022; 84:1527-1535. [PMID: 36216558 PMCID: PMC9705812 DOI: 10.1292/jvms.22-0203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Accepted: 09/19/2022] [Indexed: 01/03/2024] Open
Abstract
Glaesserella parasuis is a pathogen causing Glässer's disease characterized by fibrinous polyserositis, polyarthritis, and meningitis. Owing to the low cross-immunogenicity of different bacterial antigens in commercial vaccines, finding and identifying effective immunoprotective antigens will facilitate the development of novel subunit vaccines. In this study, LolA, identified by bioinformatics approaches, was cloned and successfully expressed as a recombinant protein in Escherichia coli, and its immunogenicity and protection were evaluated in a mouse model. The results showed that the recombinant protein LolA can stimulate mice to produce high levels of IgG antibodies and confer 50% protection against challenge with the highly virulent G. parasuis CY1201 strain (serotype 13). By testing the cytokine levels of interleukin 4 (IL-4), IL-10, and interferon-γ (IFN-γ), it was found that the recombinant protein LolA can induce both Th1 and Th2 immune responses in mice. These results suggest that the recombinant protein LolA has the potential to serve as an alternative antigen for a novel vaccine to prevent G. parasuis infection.
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Affiliation(s)
- Zhongbo GUO
- Key Laboratory of Livestock Infectious Diseases, Ministry of Education, College of Animal Science & Veterinary Medicine, Shenyang Agricultural University,
Shenyang, China
| | - Yongchao JIA
- Key Laboratory of Livestock Infectious Diseases, Ministry of Education, College of Animal Science & Veterinary Medicine, Shenyang Agricultural University,
Shenyang, China
| | - Chen HUANG
- Key Laboratory of Livestock Infectious Diseases, Ministry of Education, College of Animal Science & Veterinary Medicine, Shenyang Agricultural University,
Shenyang, China
| | - Yuanyuan ZHOU
- Key Laboratory of Livestock Infectious Diseases, Ministry of Education, College of Animal Science & Veterinary Medicine, Shenyang Agricultural University,
Shenyang, China
| | - Xin CHEN
- Key Laboratory of Livestock Infectious Diseases, Ministry of Education, College of Animal Science & Veterinary Medicine, Shenyang Agricultural University,
Shenyang, China
| | - Ronglan YIN
- Research Academy of Animal Husbandry and Veterinary Medicine Sciences of Jilin Province, Changchun, China
| | - Ying GUO
- Key Laboratory of Livestock Infectious Diseases, Ministry of Education, College of Animal Science & Veterinary Medicine, Shenyang Agricultural University,
Shenyang, China
| | - Linxi WANG
- Key Laboratory of Livestock Infectious Diseases, Ministry of Education, College of Animal Science & Veterinary Medicine, Shenyang Agricultural University,
Shenyang, China
| | - Jing YUAN
- Key Laboratory of Livestock Infectious Diseases, Ministry of Education, College of Animal Science & Veterinary Medicine, Shenyang Agricultural University,
Shenyang, China
| | - Jingyi WANG
- Key Laboratory of Livestock Infectious Diseases, Ministry of Education, College of Animal Science & Veterinary Medicine, Shenyang Agricultural University,
Shenyang, China
| | - Ping YAN
- Key Laboratory of Livestock Infectious Diseases, Ministry of Education, College of Animal Science & Veterinary Medicine, Shenyang Agricultural University,
Shenyang, China
| | - Ronghuan YIN
- Key Laboratory of Livestock Infectious Diseases, Ministry of Education, College of Animal Science & Veterinary Medicine, Shenyang Agricultural University,
Shenyang, China
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Expression Analysis of Outer Membrane Protein HPS_06257 in Different Strains of Glaesserella parasuis and Its Potential Role in Protective Immune Response against HPS_06257-Expressing Strains via Antibody-Dependent Phagocytosis. Vet Sci 2022; 9:vetsci9070342. [PMID: 35878359 PMCID: PMC9316402 DOI: 10.3390/vetsci9070342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 06/29/2022] [Accepted: 07/01/2022] [Indexed: 12/04/2022] Open
Abstract
Simple Summary Glaesserella parasuis, one of the opportunistic pathogens causing Glässer’s disease in piglets, has become a significant concern for pig farmers. Vaccination has been shown to be effective in preventing Glaesserella parasuis infection by inducing the protective immune response. Notably, a humoral immune response plays an important role in protection of Glaesserella parasuis infection. The mechanism of protection by antibodies has been shown to be associated with antibody-opsonized phagocytosis, which facilitates uptake of Glaesserella parasuis by phagocytes such as macrophages. Outer membrane proteins of Glaesserella parasuis, as the promising candidates, are often chosen to develop subunit vaccines. HPS_06257 is one of the outer membrane proteins that has been shown to confer protection against Glaesserella parasuis infection. However, little is known about the role of HPS_06257 in the protective immune response. We demonstrate that antibody-dependent phagocytosis is involved in the protective effects of HPS_06257. Our findings extend our understanding of how antibody-dependent phagocytosis may contribute to the immune protection afforded by other outer membrane proteins. Thus, our study provides insight into the protective antigens of Glaesserella parasuis and useful information for the development of novel vaccines to prevent Glaesserella parasuis infection. Abstract HPS_06257 has been identified as an important protective antigen against Glaesserella parasuis infection. However, little is known about the role of HPS_06257 in the protective immune response. A whole-genome data analysis showed that among 18 isolates of Glaesserella parasuis, 11 were positive for the HPS_06257 gene, suggesting that not every strain contains this gene. We used PCR to investigate the presence of the HPS_06257 gene among 13 reference strains and demonstrated that 5 strains contained the gene. A polyclonal antibody against HPS_06257 was generated with a recombinant protein to study the expression of HPS_06257 in those 13 strains. Consistent with the PCR data, five strains expressed HPS_06257, whereas eight strains were HPS_06257 null. We also compared the protective effects of HPS_06257 against an HPS_06257-expressing strain (HPS5) and an HPS_06257-null strain (HPS11). Immunization with HPS_06257 only protected against HPS5 and not HPS11. Moreover, phagocytosis of antibody-opsonized bacteria demonstrates that the antibody against HPS_06257 increased the phagocytosis of the HPS5 strain by macrophages but not the phagocytosis of the HPS11 strain, suggesting that antibody-dependent phagocytosis is responsible for the protective role exerted by HPS_06257 in the immune response to HPS5. Our data also show that the antibody against HPS_06257 increased the phagocytosis of the other HPS_06257-expressing strains by macrophages but not that of HPS_06257-null strains. In summary, our findings demonstrate that antibody-dependent phagocytosis contributes to the protective immune response induced by immunization with HPS_06257 against HPS_06257-expressing strains.
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JIA YC, CHEN X, ZHOU YY, YAN P, GUO Y, YIN RL, YUAN J, WANG LX, WANG XZ, YIN RH. Application of mouse model for evaluation of recombinant LpxC and GmhA as novel antigenic vaccine candidates of Glaesserella parasuis serotype 13. J Vet Med Sci 2021; 83:1500-1508. [PMID: 34393140 PMCID: PMC8569868 DOI: 10.1292/jvms.21-0298] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Accepted: 07/30/2021] [Indexed: 11/22/2022] Open
Abstract
Glaesserella parasuis (G. parasuis) has been one of the bacteria affecting the large-scale swine industry. Lack of an effective vaccine has limited control of the disease, which has an effect on prevalence. In order to improve the cross-protection of vaccines, development on subunit vaccines has become a hot spot. In this study, we firstly cloned the lpxC and gmhA genes from G. parasuis serotype 13 isolates, and expressed and purified their proteins. The results showed that LpxC and GmhA can stimulate mice to produce IgG antibodies. Through testing the cytokine levels of interleukin 4 (IL-4), IL-10 and interferon-γ (IFN-γ), it is found that recombinant GmhA, the mixed LpxC and GmhA can stimulate the body to produce Th1 and Th2 immune responses, while recombinant LpxC and inactivated bacteria can only produce Th2 immune responses. On the protection rate for mice, recombinant LpxC, GmhA and the mixture of LpxC and GmhA can provide 50%, 50% and 60% protection for lethal dose of G. parasuis infection, respectively. The partial protection achieved by the recombinant LpxC and GmhA supports their potential as novel vaccine candidate antigens against G. parasuis.
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Affiliation(s)
- Yong C. JIA
- Key Laboratory of Livestock Infectious Diseases in Northeast
China, Ministry of Education, College of Animal Science & Veterinary Medicine,
Shenyang Agricultural University, Shenyang 110866, China
| | - Xin CHEN
- Key Laboratory of Livestock Infectious Diseases in Northeast
China, Ministry of Education, College of Animal Science & Veterinary Medicine,
Shenyang Agricultural University, Shenyang 110866, China
| | - Yuan Y. ZHOU
- Key Laboratory of Livestock Infectious Diseases in Northeast
China, Ministry of Education, College of Animal Science & Veterinary Medicine,
Shenyang Agricultural University, Shenyang 110866, China
| | - Ping YAN
- Key Laboratory of Livestock Infectious Diseases in Northeast
China, Ministry of Education, College of Animal Science & Veterinary Medicine,
Shenyang Agricultural University, Shenyang 110866, China
| | - Ying GUO
- Key Laboratory of Livestock Infectious Diseases in Northeast
China, Ministry of Education, College of Animal Science & Veterinary Medicine,
Shenyang Agricultural University, Shenyang 110866, China
| | - Rong L. YIN
- Research Academy of Animal Husbandry and Veterinary Medicine
Sciences of Jilin Province, Changchun 130062, China
| | - Jing YUAN
- Key Laboratory of Livestock Infectious Diseases in Northeast
China, Ministry of Education, College of Animal Science & Veterinary Medicine,
Shenyang Agricultural University, Shenyang 110866, China
| | - Lin X. WANG
- Key Laboratory of Livestock Infectious Diseases in Northeast
China, Ministry of Education, College of Animal Science & Veterinary Medicine,
Shenyang Agricultural University, Shenyang 110866, China
| | - Xin Z. WANG
- Liaoning Agricultural Technical College, Yingkou, 115009,
China
| | - Rong H. YIN
- Key Laboratory of Livestock Infectious Diseases in Northeast
China, Ministry of Education, College of Animal Science & Veterinary Medicine,
Shenyang Agricultural University, Shenyang 110866, China
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Jiang R, Xiang M, Chen W, Zhang P, Wu X, Zhu G, Tu T, Jiang D, Yao X, Luo Y, Yang Z, Chen D, Wang Y. Biofilm characteristics and transcriptomic analysis of Haemophilus parasuis. Vet Microbiol 2021; 258:109073. [PMID: 33984794 DOI: 10.1016/j.vetmic.2021.109073] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Accepted: 04/13/2021] [Indexed: 12/27/2022]
Abstract
Haemophilus parasuis (H. parasuis) is a conditional pathogen with the ability to form biofilms which can lead to ineffective drug treatment and severe chronic infections resulting in significant economic losses to the pig industry. Currently, knowledge of biofilm formation by H. parasuis is not well developed. The objective of this study was to investigate the three-dimensional morphology of biofilms and perform transcriptomic analysis on H. parasuis cells in biofilm versus planktonic forms. The results showed that proteins and DNA accounted for a large proportion of the H. parasuis biofilm extracellular matrix. Here, we have traced the entire biofilm formation process of H. parasuis from beginning to end for the first time. These biofilms grew rapidly in the first 48 h and became stable at 60 h. According to GO and KEGG analysis, the differentially expressed genes (DEG) artM, artQ, ssrS, pflA and HutX were implicated as being involved in bacterial colonisation and adhesion; these are the most likely genes to affect biofilm formation. Most functional gene enrichments were of those involved in metabolic pathways, biosynthesis of secondary metabolites, ATP-binding cassette (ABC) transporters, and starch and sucrose metabolism. Thus, in the present pilot study, the composition and characteristics of these biofilms were explored, and the genes related to biofilm formation were screened for. This research lays the foundation for further studies on mechanisms regulating biofilm formation, in order to find new drug targets and develop new therapeutic drugs against H. parasuis.
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Affiliation(s)
- Ruijiao Jiang
- Sichuan Provincial Key Laboratory of Animal Diseases and Human Health, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing 100193, People's Republic of China
| | - Mingyuan Xiang
- Sichuan Provincial Key Laboratory of Animal Diseases and Human Health, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China
| | - Wanting Chen
- Sichuan Provincial Key Laboratory of Animal Diseases and Human Health, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China
| | - Pengfei Zhang
- Sichuan Provincial Key Laboratory of Animal Diseases and Human Health, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China
| | - Xulong Wu
- Branch of Animal Husbandry and Veterinary Medicine, Chengdu Agricultural College, Chengdu 611130, China
| | - Guangheng Zhu
- Sichuan Provincial Key Laboratory of Animal Diseases and Human Health, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China
| | - Teng Tu
- Sichuan Provincial Key Laboratory of Animal Diseases and Human Health, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China
| | - Dike Jiang
- Sichuan Provincial Key Laboratory of Animal Diseases and Human Health, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China
| | - Xueping Yao
- Sichuan Provincial Key Laboratory of Animal Diseases and Human Health, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China
| | - Yan Luo
- Sichuan Provincial Key Laboratory of Animal Diseases and Human Health, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China
| | - Zexiao Yang
- Sichuan Provincial Key Laboratory of Animal Diseases and Human Health, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China
| | - Dishi Chen
- Sichuan Animal Disease Prevention and Control Center, Chengdu 610047, China.
| | - Yin Wang
- Sichuan Provincial Key Laboratory of Animal Diseases and Human Health, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China.
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Hau SJ, Eberle KC, Brockmeier SL. Importance of strain selection in the generation of heterologous immunity to Glaesserella (Haemophilus) parasuis. Vet Immunol Immunopathol 2021; 234:110205. [PMID: 33636545 DOI: 10.1016/j.vetimm.2021.110205] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 02/05/2021] [Accepted: 02/06/2021] [Indexed: 02/01/2023]
Abstract
Glaesserella (Haemophilus) parasuis is a part of the microbiota of healthy pigs and also causes the systemic condition called Glässer's disease. G. parasuis is categorized by it capsular polysaccharide into 15 serovars. Because of the serovar and strain specific immunity generated by whole cell vaccines and the rapid onset of disease, G. parasuis has been difficult to control in the swine industry. This report investigated the protection afforded by the use of two serovar 5 isolates (Nagasaki and HS069) as whole cell, killed bacterins against homologous challenge and heterologous challenge with the serovar 1 strain 12939 to better understand bacterin generated immunity. Both bacterins induced a high antibody titer to the vaccine strain and the heterologous challenge strain. Protection was seen with both bacterins against homologous challenge; however, after heterologous challenge, the HS069 bacterin provided complete protection and all Nagasaki bacterin vaccinated animals succumbed to disease. The difference in protection appears to be due to differences in antibody specificity and the capacity of induced antibody to fix complement and opsonize G. parasuis, as shown by Western blotting and functional assays. This report shows the importance of strain selection when developing bacterin vaccines, as some strains are better able to generate heterologous protection. The difference in protection seen here can also be utilized to detect proteins of interest for subunit vaccine development.
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Affiliation(s)
- Samantha J Hau
- National Animal Disease Center, ARS, USDA, 1920 Dayton Ave, Ames, IA, 50010, United States; Oak Ridge Institute for Science and Education, 1299 Bethel Valley Rd, Oak Ridge, TN, 37830, United States
| | - Kirsten C Eberle
- National Animal Disease Center, ARS, USDA, 1920 Dayton Ave, Ames, IA, 50010, United States; Oak Ridge Institute for Science and Education, 1299 Bethel Valley Rd, Oak Ridge, TN, 37830, United States
| | - Susan L Brockmeier
- National Animal Disease Center, ARS, USDA, 1920 Dayton Ave, Ames, IA, 50010, United States.
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Kwankijudomkul A, Dong HT, Longyant S, Sithigorngul P, Khunrae P, Rattanarojpong T, Senapin S. Antigenicity of hypothetical protein HP33 of Vibrio harveyi Y6 causing scale drop and muscle necrosis disease in Asian sea bass. FISH & SHELLFISH IMMUNOLOGY 2021; 108:73-79. [PMID: 33285163 DOI: 10.1016/j.fsi.2020.11.034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 11/10/2020] [Accepted: 11/29/2020] [Indexed: 06/12/2023]
Abstract
A unique strain of Vibrio harveyi is the causative agent of scale drop and muscle necrosis disease (SDMND) in Asian sea bass (Lates calcarifer). This study investigated the protein profiles of SDMND-causing Vibrio harveyi isolates compared to the reference V. harveyi ATCC 14126 strain. A distinct protein band of 33 kDa, namely HP33, found from only V. harveyi SDMND was subjected to analysis by LC-MS/MS and the identified peptide sequences matched to an unknown hypothetical protein. Detection of HP33 coding sequence was investigated at both genomic and transcriptional levels and the results consistently supported the protein analysis. Recombinant HP33 protein was then produced using Escherichia coli system. The rHP33 protein did not cause mortality or visible clinical signs to Asian sea bass. However, the rHP33 protein was able to stimulate antibody response in Asian sea bass as evidenced by Western blotting and agglutination tests. Here, we proposed that rHP33 might be a good protein target for development of subunit vaccine and/or immunostimulant to protect Asian sea bass from SDMND.
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Affiliation(s)
- Anusara Kwankijudomkul
- Department of Microbiology, Faculty of Science, King Mongkut's University of Technology, Thonburi (KMUTT), Bangkok, 10140, Thailand
| | - Ha Thanh Dong
- Faculty of Science and Technology, Suan Sunandha Rajabhat University, Bangkok, 10300, Thailand
| | - Siwaporn Longyant
- Department of Biology, Faculty of Science, Srinakharinwirot University, Bangkok, 10110, Thailand
| | - Paisarn Sithigorngul
- Department of Biology, Faculty of Science, Srinakharinwirot University, Bangkok, 10110, Thailand
| | - Pongsak Khunrae
- Department of Microbiology, Faculty of Science, King Mongkut's University of Technology, Thonburi (KMUTT), Bangkok, 10140, Thailand
| | - Triwit Rattanarojpong
- Department of Microbiology, Faculty of Science, King Mongkut's University of Technology, Thonburi (KMUTT), Bangkok, 10140, Thailand.
| | - Saengchan Senapin
- Fish Health Platform, Center of Excellence for Shrimp Molecular Biology and Biotechnology (Centex Shrimp), Faculty of Science, Mahidol University, Bangkok, 10400, Thailand; National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani, 12120, Thailand.
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9
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Hau SJ, Luan SL, Loving CL, Nicholson TL, Wang J, Peters SE, Seilly D, Weinert LA, Langford PR, Rycroft AN, Wren BW, Maskell DJ, Tucker AW, Brockmeier SL. Evaluation of the recombinant proteins RlpB and VacJ as a vaccine for protection against Glaesserella parasuis in pigs. BMC Vet Res 2020; 16:167. [PMID: 32460764 PMCID: PMC7252510 DOI: 10.1186/s12917-020-02377-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Accepted: 05/14/2020] [Indexed: 12/19/2023] Open
Abstract
BACKGROUND Glaesserella parasuis, the causative agent of Glӓsser's disease, is widespread in swine globally resulting in significant economic losses to the swine industry. Prevention of Glӓsser's disease in pigs has been plagued with an inability to design broadly protective vaccines, as many bacterin based platforms generate serovar or strain specific immunity. Subunit vaccines are of interest to provide protective immunity to multiple strains of G. parasuis. Selected proteins for subunit vaccination should be widespread, highly conserved, and surface exposed. RESULTS Two candidate proteins for subunit vaccination (RlpB and VacJ) against G. parasuis were identified using random mutagenesis and an in vitro organ culture system. Pigs were vaccinated with recombinant RlpB and VacJ, outer membrane proteins with important contributions to cellular function and viability. Though high antibody titers to the recombinant proteins and increased interferon-γ producing cells were found in subunit vaccinated animals, the pigs were not protected from developing systemic disease. CONCLUSIONS It appears there may be insufficient RlpB and VacJ exposed on the bacterial surface for antibody to bind, preventing high RlpB and VacJ specific antibody titers from protecting animals from G. parasuis. Additionally, this work confirms the importance of utilizing the natural host species when assessing the efficacy of vaccine candidates.
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Affiliation(s)
- Samantha J Hau
- USDA, ARS, National Animal Disease Center, 1920 Dayton Ave, Ames, IA, 50010, USA
| | - Shi-Lu Luan
- Department of Veterinary Medicine, University of Cambridge, Cambridge, UK
| | - Crystal L Loving
- USDA, ARS, National Animal Disease Center, 1920 Dayton Ave, Ames, IA, 50010, USA
| | - Tracy L Nicholson
- USDA, ARS, National Animal Disease Center, 1920 Dayton Ave, Ames, IA, 50010, USA
| | - Jinhong Wang
- Department of Veterinary Medicine, University of Cambridge, Cambridge, UK
| | - Sarah E Peters
- Department of Veterinary Medicine, University of Cambridge, Cambridge, UK
| | - David Seilly
- Department of Veterinary Medicine, University of Cambridge, Cambridge, UK
| | - Lucy A Weinert
- Department of Veterinary Medicine, University of Cambridge, Cambridge, UK
| | - Paul R Langford
- Section of Paediatric Infectious Diseases, Department of Infectious Disease, Imperial College London, St. Mary's Campus, London, UK
| | | | - Brendan W Wren
- Faculty of Infectious & Tropical Diseases, London School of Hygiene & Tropical Medicine, London, UK
| | - Duncan J Maskell
- Department of Veterinary Medicine, University of Cambridge, Cambridge, UK.,Current address: The University of Melbourne, Level 9, Raymond Priestley Building, Melbourne, Victoria, 3010, Australia
| | - Alexander W Tucker
- Department of Veterinary Medicine, University of Cambridge, Cambridge, UK
| | - Susan L Brockmeier
- USDA, ARS, National Animal Disease Center, 1920 Dayton Ave, Ames, IA, 50010, USA.
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10
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Wang Y, Wang X, Ali F, Li Z, Fu Y, Yang X, Lin W, Lin X. Comparative Extracellular Proteomics of Aeromonas hydrophila Reveals Iron-Regulated Secreted Proteins as Potential Vaccine Candidates. Front Immunol 2019; 10:256. [PMID: 30833947 PMCID: PMC6387970 DOI: 10.3389/fimmu.2019.00256] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Accepted: 01/29/2019] [Indexed: 01/07/2023] Open
Abstract
In our previous study, several iron-related outer membrane proteins in Aeromonas hydrophila, a serious pathogen of farmed fish, conferred high immunoprotectivity to fish, and were proposed as potential vaccine candidates. However, the protective efficacy of these extracellular proteins against A. hydrophila remains largely unknown. Here, we identified secreted proteins that were differentially expressed in A. hydrophila LP-2 in response to iron starvation using an iTRAQ-based quantitative proteomics method. We identified 341 proteins, of which 9 were upregulated in response to iron starvation and 24 were downregulated. Many of the differently expressed proteins were associated with protease activity. We confirmed our proteomics results with Western blotting and qPCR. We constructed three mutants by knocking out three genes encoding differentially expressed proteins (Δorf01830, Δorf01609, and Δorf03641). The physiological characteristics of these mutants were investigated. In all these mutant strains, protease activity decreased, and Δorf01609, and Δorf01830 were less virulent in zebrafish. This indicated that the proteins encoded by these genes may play important roles in bacterial infection. We next evaluated the immune response provoked by the six iron-related recombinant proteins (ORF01609, ORF01830, ORF01839, ORF02943, ORF03355, and ORF03641) in zebrafish as well as the immunization efficacy of these proteins. Immunization with these proteins significantly increased the zebrafish immune response. In addition, the relative percent survival (RPS) of the immunized zebrafish was 50-80% when challenged with three virulent A. hydrophila strains, respectively. Thus, these extracellular secreted proteins might be effective vaccine candidates against A. hydrophila infection in fish.
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Affiliation(s)
- Yuqian Wang
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Xiaoyun Wang
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China.,Key Laboratory of Crop Ecology and Molecular Physiology, Fujian Agriculture and Forestry University, Fujian Province University, Fuzhou, China
| | - Farman Ali
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China.,Key Laboratory of Crop Ecology and Molecular Physiology, Fujian Agriculture and Forestry University, Fujian Province University, Fuzhou, China
| | - Zeqi Li
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China.,Key Laboratory of Crop Ecology and Molecular Physiology, Fujian Agriculture and Forestry University, Fujian Province University, Fuzhou, China
| | - Yuying Fu
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China.,Key Laboratory of Crop Ecology and Molecular Physiology, Fujian Agriculture and Forestry University, Fujian Province University, Fuzhou, China
| | - Xiaojun Yang
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China.,Key Laboratory of Crop Ecology and Molecular Physiology, Fujian Agriculture and Forestry University, Fujian Province University, Fuzhou, China
| | - Wenxiong Lin
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China.,Key Laboratory of Crop Ecology and Molecular Physiology, Fujian Agriculture and Forestry University, Fujian Province University, Fuzhou, China
| | - Xiangmin Lin
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China.,Key Laboratory of Crop Ecology and Molecular Physiology, Fujian Agriculture and Forestry University, Fujian Province University, Fuzhou, China
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11
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Nagpal G, Usmani SS, Raghava GPS. A Web Resource for Designing Subunit Vaccine Against Major Pathogenic Species of Bacteria. Front Immunol 2018; 9:2280. [PMID: 30356876 PMCID: PMC6190870 DOI: 10.3389/fimmu.2018.02280] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Accepted: 09/13/2018] [Indexed: 01/02/2023] Open
Abstract
Evolution has led to the expansion of survival strategies in pathogens including bacteria and emergence of drug resistant strains proved to be a major global threat. Vaccination is a promising strategy to protect human population. Reverse vaccinology is a more robust vaccine development approach especially with the availability of large-scale sequencing data and rapidly dropping cost of the techniques for acquiring such data from various organisms. The present study implements an immunoinformatic approach for screening the possible antigenic proteins among various pathogenic bacteria to systemically arrive at epitope-based vaccine candidates against 14 pathogenic bacteria. Thousand four hundred and fifty nine virulence factors and Five hundred and forty six products of essential genes were appraised as target proteins to predict potential epitopes with potential to stimulate different arms of the immune system. To address the self-tolerance, self-epitopes were identified by mapping on 1000 human proteome and were removed. Our analysis revealed that 21proteins from 5 bacterial species were found as virulent as well as essential to their survival, proved to be most suitable vaccine target against these species. In addition to the prediction of MHC-II binders, B cell and T cell epitopes as well as adjuvants individually from proteins of all 14 bacterial species, a stringent criteria lead us to identify 252 unique epitopes, which are predicted to be T-cell epitopes, B-cell epitopes, MHC II binders and Vaccine Adjuvants. In order to provide service to scientific community, we developed a web server VacTarBac for designing of vaccines against above species of bacteria. This platform integrates a number of tools that includes visualization tools to present antigenicity/epitopes density on an antigenic sequence. These tools will help users to identify most promiscuous vaccine candidates in a pathogenic antigen. This server VacTarBac is available from URL (http://webs.iiitd.edu.in/raghava/vactarbac/).
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Affiliation(s)
- Gandharva Nagpal
- Bioinformatics Centre, CSIR-Institute of Microbial Technology, Chandigarh, India.,Centre for Bioinformatics, Computational and Systems Biology, Pathfinder Research and Training Foundation, Greater Noida, India
| | - Salman Sadullah Usmani
- Bioinformatics Centre, CSIR-Institute of Microbial Technology, Chandigarh, India.,Center for Computational Biology, Indraprastha Institute of Information Technology, Okhla, India
| | - Gajendra P S Raghava
- Bioinformatics Centre, CSIR-Institute of Microbial Technology, Chandigarh, India.,Center for Computational Biology, Indraprastha Institute of Information Technology, Okhla, India
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12
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Manivel G, Meyyazhagan A, Durairaj D R, Piramanayagam S. Genome-wide analysis of Excretory/Secretory proteins in Trypanosoma brucei brucei: Insights into functional characteristics and identification of potential targets by immunoinformatics approach. Genomics 2018; 111:1124-1133. [PMID: 30006035 DOI: 10.1016/j.ygeno.2018.07.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Revised: 06/28/2018] [Accepted: 07/08/2018] [Indexed: 11/28/2022]
Abstract
Trypanosoma brucei brucei (T.b.brucei) is an extra-cellular parasite that causes Animal African Trypanosomiasis (AAT) disease in animals. Till day, this disease is more difficult to treat and control due to lack of efficient vaccines and early diagnosis of the parasite infection. T.b.brucei Excretory/Secretory (ES) proteins were involved in pathogenesis and key for understanding the host-parasite interactions. Functions of T.b.brucei's ES proteins were poorly investigated and experimental identification is expensive and time-consuming. Bioinformatics approaches are cost-effective by facilitating the experimental analysis of potential drug targets for parasitic diseases. Here we applied several bioinformatics tools to predict and functionalize the annotation of 1104 ES proteins and immunoinformatics approaches carried out to predict and evaluate the epitopes in T.b.brucei. Secretory information, functional annotations and potential epitopes of each ES proteins were available at http://tbb.insilico.in. This study provides functional information of T.b.brucei for experimental studies to identify potential targets for diagnosis and therapeutics development.
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Affiliation(s)
- Gowdham Manivel
- Department of Bioinformatics, Bharathiar University, Coimbatore, India.
| | - Arun Meyyazhagan
- Cytogenetics Department, EuroEspes Biomedical Research Center, Institute of Medical Science and Genomic Medicine, 15165 Bergondo, Corunna, Spain
| | - Ruban Durairaj D
- Department of Bioinformatics, Bharathiar University, Coimbatore, India
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13
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Li G, Xie F, Li J, Liu J, Li D, Zhang Y, Langford PR, Li Y, Liu S, Wang C. Identification of novel Haemophilus parasuis serovar 5 vaccine candidates using an immunoproteomic approach. J Proteomics 2017; 163:111-117. [PMID: 28528009 DOI: 10.1016/j.jprot.2017.05.014] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Revised: 04/25/2017] [Accepted: 05/15/2017] [Indexed: 10/19/2022]
Abstract
Haemophilus parasuis is the aetiological agent of Glässer's disease, which is responsible for cases of fibrinous polyserositis, polyarthritis and meningitis. No vaccine is known that provides cross-protection against all serovars. The identification of novel immunoprotective antigens would undoubtedly contribute to the development of efficient subunit vaccines. In the present study, an immunoproteomic approach was used to analyze secreted proteins of H. parasuis and six proteins with high immunogenicity were identified. Five of them were successfully expressed, and their immunogenicity and protective efficacy were assessed in a mouse challenge model. All five proteins elicited strong humoral antibody and cellular immune responses in mice. They all effectively reduced the growth of H. parasuis in mouse organs and conferred different levels of protection (40-80%) against challenge. IgG subtype analysis revealed that the five proteins induce a bias toward a Th1-type immune response, and a significant increase was observed in the cytokine levels of IL-2, IFN-γ and Th2-specific IL-4 in the culture supernatants of splenocytes isolated from immunized mice. The results suggest that both Th1 and Th2 responses are involved in mediating protection. These data suggest that the five proteins could be potential subunit vaccine candidates for use to prevent H. parasuis infection. BIOLOGICAL SIGNIFICANCE Haemophilus parasuis can cause huge financial loss in the swine industry worldwide. There are still no vaccines which can provide cross-protection against all serovars. To address this need, we applied an immunoproteomic approach involving 2-DE, MALDI-TOF/TOF MS and Western-blot to identify the secreted proteins which may be able to provide immunoprotection to this disease. We identified six immunogenic proteins, and the immunogenicity and protective efficacy were validated. This result provides a foundation for developing novel subunit vaccines against Haemophilus parasuis.
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Affiliation(s)
- Gang Li
- State Key Laboratory of Veterinary Biotechnology, Division of Bacterial Diseases, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - Fang Xie
- State Key Laboratory of Veterinary Biotechnology, Division of Bacterial Diseases, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - Jianjun Li
- State Key Laboratory of Veterinary Biotechnology, Division of Bacterial Diseases, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - Jiao Liu
- State Key Laboratory of Veterinary Biotechnology, Division of Bacterial Diseases, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - Dapeng Li
- State Key Laboratory of Veterinary Biotechnology, Division of Bacterial Diseases, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - Yanhe Zhang
- State Key Laboratory of Veterinary Biotechnology, Division of Bacterial Diseases, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - Paul R Langford
- Section of Paediatrics, Department of Medicine, Imperial College London, St. Mary's Campus, London, United Kingdom
| | - Yanwen Li
- Section of Paediatrics, Department of Medicine, Imperial College London, St. Mary's Campus, London, United Kingdom
| | - Siguo Liu
- State Key Laboratory of Veterinary Biotechnology, Division of Bacterial Diseases, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
| | - Chunlai Wang
- State Key Laboratory of Veterinary Biotechnology, Division of Bacterial Diseases, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China.
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14
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Li M, Cai RJ, Song S, Jiang ZY, Li Y, Gou HC, Chu PP, Li CL, Qiu HJ. Evaluation of immunogenicity and protective efficacy of recombinant outer membrane proteins of Haemophilus parasuis serovar 5 in a murine model. PLoS One 2017; 12:e0176537. [PMID: 28448603 PMCID: PMC5407842 DOI: 10.1371/journal.pone.0176537] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Accepted: 04/12/2017] [Indexed: 12/04/2022] Open
Abstract
Glässer’s disease is an economically important infectious disease of pigs caused by Haemophilus parasuis. Few vaccines are currently available that could provide effective cross-protection against various serovars of H. parasuis. In this study, five OMPs (OppA, TolC, HxuC, LppC, and HAPS_0926) identified by bioinformatic approaches, were cloned and expressed as recombinant proteins. Antigenicity of the purified proteins was verified through Western blotting, and primary screening for protective potential was evaluated in vivo. Recombinant TolC (rTolC), rLppC, and rHAPS_0926 proteins showing marked protection of mice against H. parasuis infection, and were further evaluated individually or in combination. Mice treated with these three OMPs produced humoral and host cell-mediated responses, with a significant rise in antigen-specific IgG titer and lymphoproliferative response in contrast with the mock-immunized group. Significant increases were noted in CD4+, CD8+ T cells, and three cytokines (IL-2, IL-4, and IFN-γ) in vaccinated animals. The antisera against candidate antigens could efficiently impede bacterial survival in whole blood bactericidal assay against H. parasuis infection. The multi-protein vaccine induced more pronounced immune responses and offered better protection than individual vaccines. Our findings indicate that these three OMPs are promising antigens for the development of multi-component subunit vaccines against Glässer's disease.
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Affiliation(s)
- Miao Li
- Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Guangzhou, China
- Guangdong Open Laboratory of Veterinary Public Health, Guangzhou, China
- Guangdong Provincial Key Laboratory of Livestock Disease Prevention, Guangzhou, China
| | - Ru-Jian Cai
- Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Guangzhou, China
- Guangdong Open Laboratory of Veterinary Public Health, Guangzhou, China
- Guangdong Provincial Key Laboratory of Livestock Disease Prevention, Guangzhou, China
| | - Shuai Song
- Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Guangzhou, China
- Guangdong Open Laboratory of Veterinary Public Health, Guangzhou, China
- Guangdong Provincial Key Laboratory of Livestock Disease Prevention, Guangzhou, China
| | - Zhi-Yong Jiang
- Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Guangzhou, China
- Guangdong Open Laboratory of Veterinary Public Health, Guangzhou, China
- Guangdong Provincial Key Laboratory of Livestock Disease Prevention, Guangzhou, China
| | - Yan Li
- Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Guangzhou, China
- Guangdong Open Laboratory of Veterinary Public Health, Guangzhou, China
- Guangdong Provincial Key Laboratory of Livestock Disease Prevention, Guangzhou, China
| | - Hong-Chao Gou
- Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Guangzhou, China
- Guangdong Open Laboratory of Veterinary Public Health, Guangzhou, China
- Guangdong Provincial Key Laboratory of Livestock Disease Prevention, Guangzhou, China
| | - Pin-Pin Chu
- Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Guangzhou, China
- Guangdong Open Laboratory of Veterinary Public Health, Guangzhou, China
- Guangdong Provincial Key Laboratory of Livestock Disease Prevention, Guangzhou, China
| | - Chun-Ling Li
- Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Guangzhou, China
- Guangdong Open Laboratory of Veterinary Public Health, Guangzhou, China
- Guangdong Provincial Key Laboratory of Livestock Disease Prevention, Guangzhou, China
- * E-mail: (CL); (HQ)
| | - Hua-Ji Qiu
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
- * E-mail: (CL); (HQ)
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15
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Guo L, Xu L, Wu T, Fu S, Qiu Y, Hu CAA, Ren X, Liu R, Ye M. Evaluation of recombinant protein superoxide dismutase of Haemophilus parasuis strain SH0165 as vaccine candidate in a mouse model. Can J Microbiol 2017; 63:312-320. [DOI: 10.1139/cjm-2016-0671] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Haemophilus parasuis can cause a severe membrane inflammation disorder. It has been documented that superoxide dismutase (SOD) is a potential target to treat systemic inflammatory diseases. Therefore, we constructed an experimental H. parasuis subunit vaccine SOD and determined the protective efficacy of SOD using a lethal dose challenge against H. parasuis serovar 4 strain MD0322 and serovar 5 strain SH0165 in a mouse model. The results demonstrated that SOD could induce a strong humoral immune response in mice and provide significant immunoprotection efficacy against a lethal dose of H. parasuis serovar 4 strain MD0322 or serovar 5 strain SH0165 challenge. IgG subtype analysis indicated SOD protein could trigger a bias toward a Th1-type immune response and induce the proliferation of splenocytes and secretion of IL-2 and IFN-γ of splenocytes. In addition, serum in mice from the SOD-immunized group could inhibit the growth of strain MD0322 and strain SH0165 in the whole-blood killing bacteria assay. This is the first report that immunization of mice with SOD protein could provide protective effect against a lethal dose of H. parasuis serovar 4 and serovar 5 challenge in mice, which may provide a novel approach against heterogeneous serovar infection of H. parasuis in future.
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Affiliation(s)
- Ling Guo
- Hubei Key Laboratory of Animal Nutrition and Feed Science, Hubei Collaborative Innovation Center for Animal Nutrition and Feed Safety, Wuhan Polytechnic University, Wuhan 430023, People’s Republic of China
| | - Lei Xu
- Hubei Key Laboratory of Animal Nutrition and Feed Science, Hubei Collaborative Innovation Center for Animal Nutrition and Feed Safety, Wuhan Polytechnic University, Wuhan 430023, People’s Republic of China
| | - Tao Wu
- Hubei Key Laboratory of Animal Nutrition and Feed Science, Hubei Collaborative Innovation Center for Animal Nutrition and Feed Safety, Wuhan Polytechnic University, Wuhan 430023, People’s Republic of China
| | - Shulin Fu
- Hubei Key Laboratory of Animal Nutrition and Feed Science, Hubei Collaborative Innovation Center for Animal Nutrition and Feed Safety, Wuhan Polytechnic University, Wuhan 430023, People’s Republic of China
| | - Yinsheng Qiu
- Hubei Key Laboratory of Animal Nutrition and Feed Science, Hubei Collaborative Innovation Center for Animal Nutrition and Feed Safety, Wuhan Polytechnic University, Wuhan 430023, People’s Republic of China
| | - Chien-An Andy Hu
- Hubei Key Laboratory of Animal Nutrition and Feed Science, Hubei Collaborative Innovation Center for Animal Nutrition and Feed Safety, Wuhan Polytechnic University, Wuhan 430023, People’s Republic of China
- Biochemistry and Molecular Biology, University of New Mexico School of Medicine, Albuquerque, NM 87131, USA
| | - Xinglong Ren
- College of Science, Huazhong Agricultural University, Wuhan 430070, People’s Republic of China
| | - Rongrong Liu
- School of Animal Science and Nutritional Engineering, Wuhan Polytechnic University, Wuhan 430023, People’s Republic of China
| | - Mengdie Ye
- School of Animal Science and Nutritional Engineering, Wuhan Polytechnic University, Wuhan 430023, People’s Republic of China
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16
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Omp16-based vaccine encapsulated by alginate-chitosan microspheres provides significant protection against Haemophilus parasuis in mice. Vaccine 2017; 35:1417-1423. [PMID: 28187951 DOI: 10.1016/j.vaccine.2017.01.067] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2016] [Revised: 01/23/2017] [Accepted: 01/26/2017] [Indexed: 12/13/2022]
Abstract
Haemophilus parasuis (H. parasuis) is the etiological agent of swine Glässer's disease, which leads to significant economic loss in swine industry over the world. Subunit vaccine based on outer membrane protein is one of the promising choices to protect pigs against H. parasuis infection despite low immunity efficiency. In this paper, outer membrane protein 16 (Omp16) of H. parasuis encapsulated by alginate-chitosan microspheres as antigen carriers was explored for the first time in a mouse model. Our results showed that the microspheres with Omp16 induced significant higher H. parasuis-specific antibodies, and higher titers of IL-2, IL-4, and IFN-γ than those by Omp16-FIA in treated mice (p<0.05). Moreover, H. parasuis load in the tissues from liver, spleen, and lung of mice immunized with microspheres containing Omp16 was significantly decreased (p<0.05) than that in the same counterpart tissues of control groups. In addition, 80% mice treated with Omp16 and 70% mice with Omp16-FIA were survived after challenged with H. parasuis virulent strain LY02 (serovar 5). Therefore, Omp16-based microsphere vaccine induces both humoral and cellular immune responses and provides promising protection against H. parasuis infection in mice.
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17
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Rana A, Thakur S, Bhardwaj N, Kumar D, Akhter Y. Excavating the surface-associated and secretory proteome of Mycobacterium leprae for identifying vaccines and diagnostic markers relevant immunodominant epitopes. Pathog Dis 2016; 74:ftw110. [PMID: 27856491 DOI: 10.1093/femspd/ftw110] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Revised: 06/13/2016] [Accepted: 11/13/2016] [Indexed: 02/03/2023] Open
Abstract
For centuries, Mycobacterium leprae, etiological agent of leprosy, has been afflicting mankind regardless of extensive use of live-attenuated vaccines and antibiotics. Surface-associated and secretory proteins (SASPs) are attractive targets against bacteria. We have integrated biological knowledge with computational approaches and present a proteome-wide identification of SASPs. We also performed computational assignment of immunodominant epitopes as coordinates of prospective antigenic candidates in most important class of SASPs, the outer membrane proteins (OMPs). Exploiting the known protein sequence and structural characteristics shared by the SASPs from bacteria, 17 lipoproteins, 11 secretory and 19 novel OMPs (including 4 essential proteins) were identified in M. leprae As OMPs represent the most exposed antigens on the cell surface, their immunoinformatics analysis showed that the identified 19 OMPs harbor T-cell MHC class I epitopes and class II epitopes against HLA-DR alleles (54), while 15 OMPs present potential T-cell class II epitopes against HLA-DQ alleles (6) and 7 OMPs possess T-cell class II epitopes against HLA-DP alleles (5) of humans. Additionally, 11 M. leprae OMPs were found to have B-cell epitopes and these may be considered as prime candidates for the development of new immunotherapeutics against M. leprae.
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Affiliation(s)
- Aarti Rana
- School of Life Sciences, Central University of Himachal Pradesh, Shahpur, District-Kangra, Himachal Pradesh-176206, India
| | - Shweta Thakur
- School of Life Sciences, Central University of Himachal Pradesh, Shahpur, District-Kangra, Himachal Pradesh-176206, India
| | - Nupur Bhardwaj
- School of Life Sciences, Central University of Himachal Pradesh, Shahpur, District-Kangra, Himachal Pradesh-176206, India
| | - Devender Kumar
- School of Life Sciences, Central University of Himachal Pradesh, Shahpur, District-Kangra, Himachal Pradesh-176206, India
| | - Yusuf Akhter
- School of Life Sciences, Central University of Himachal Pradesh, Shahpur, District-Kangra, Himachal Pradesh-176206, India
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18
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Zhang Y, Li G, Xie F, Liu S, Wang C. Evaluation of glutathione-binding protein A of Haemophilus parasuis as a vaccine candidate in a mouse model. J Vet Med Sci 2016; 79:184-187. [PMID: 27840377 PMCID: PMC5289258 DOI: 10.1292/jvms.16-0327] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
The virulent strains of Haemophilus parasuis are the causative agents of Glässer’s disease, which can cause systemic infection and result in
polyserositis, meningitis and arthritis. The development of novel, effective vaccines would be beneficial to preventing H. parasuis infections.
Here, we report a novel immunogenic protein, glutathione-binding protein A (GbpA), which can elicit a significant humoral antibody response and confer
significant protection against challenge with a lethal dose of a highly virulent H. parasuis strain. The H. parasuis strain
can be fully eliminated in the immunized mice. The results indicate that GbpA has the potential to be used as an effective component of a new vaccine against
H. parasuis.
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Affiliation(s)
- Yanhe Zhang
- Division of Bacterial Diseases, State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute of Chinese Academy of Agricultural Sciences, Harbin, People's Republic of China
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19
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Liu H, Xue Q, Zeng Q, Zhao Z. Haemophilus parasuis vaccines. Vet Immunol Immunopathol 2016; 180:53-58. [DOI: 10.1016/j.vetimm.2016.09.002] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Revised: 09/06/2016] [Accepted: 09/08/2016] [Indexed: 11/24/2022]
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20
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Molecular analysis of lungs from pigs immunized with a mutant transferrin binding protein B-based vaccine and challenged with Haemophilus parasuis. Comp Immunol Microbiol Infect Dis 2016; 48:69-78. [PMID: 27638122 DOI: 10.1016/j.cimid.2016.08.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2016] [Revised: 07/28/2016] [Accepted: 08/10/2016] [Indexed: 11/20/2022]
Abstract
The molecular analysis of pigs vaccinated with a mutant transferrin-binding protein B (Y167A) from Haemophilus parasuis was compared with that performed for unvaccinated challenged (UNCH) and unvaccinated unchallenged (UNUN) pigs. Microarray analysis revealed that UNCH group showed the most distinct expression profile for immune response genes, mainly for those genes involved in inflammation or immune cell trafficking. This fact was confirmed by real-time PCR, in which the greatest level of differential expression from this group were CD14, CD163, IL-8 and IL-12. In Y167A group, overexpressed genes included MAP3K8, CD14, IL-12 and CD163. Proteomics revealed that collagen α-1 and peroxiredoxins 2 and 6 were overexpressed in Y167A pigs. Our study reveals new data on genes and proteins involved in H. parasuis infection and several candidates of resistance to infection that are induced by Y167A vaccine. The expression of proinflammatory molecules from Y176A pigs is similar to their expression in UNUN pigs.
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21
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Li M, Li C, Song S, Kang H, Yang D, Li G. Development and antigenic characterization of three recombinant proteins with potential for Glässer's disease prevention. Vaccine 2016; 34:2251-8. [PMID: 26993332 DOI: 10.1016/j.vaccine.2016.03.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Revised: 02/13/2016] [Accepted: 03/07/2016] [Indexed: 01/08/2023]
Abstract
Haemophilus parasuis is the causative agent of Glässer's disease, which causes high morbidity and mortality in piglets, leading to severe economic losses. The lack of a commercial vaccine against a broad spectrum of strains has limited the disease control. H. parasuis outer membrane proteins (OMPs) are potentially essential components for vaccine formulation. In this study, seven putative OMPs were selected from the annotated H. parasuis serovar 5 genome; they were predicted by bioinformatics and annotated as potential virulence-related factors. These proteins were cloned, expressed, and purified as His-tagged proteins. Antigenicity of the candidate proteins was assessed using Western blotting with convalescent sera against H. parasuis serovar 5. The immunogenicity of the seven OMPs was assessed in a guinea pig model. Except VacJ, all the other six recombinant proteins elicited a detectable antibody response. Antisera against four of the selected proteins effectively killed the bacteria in vitro. Three proteins (Omp26, VacJ, and HAPS_0742) were found to confer significant protection against challenge with a lethal dose of H. parasuis in a guinea pig model. The results suggest that these three proteins have a strong potential to be vaccine candidates against Glässer's disease.
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Affiliation(s)
- Miao Li
- Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, Guangdong, China; Public Laboratory of Veterinary Public Health of Guangdong Province, Guangzhou 510640, Guangdong, China; Guangdong Key Laboratory of Animal Epidemic Diseases Prevention, Guangzhou 510640, Guangdong, China; College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, Guangdong, China
| | - Chunling Li
- Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, Guangdong, China; Public Laboratory of Veterinary Public Health of Guangdong Province, Guangzhou 510640, Guangdong, China; Guangdong Key Laboratory of Animal Epidemic Diseases Prevention, Guangzhou 510640, Guangdong, China.
| | - Shuai Song
- Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, Guangdong, China; Public Laboratory of Veterinary Public Health of Guangdong Province, Guangzhou 510640, Guangdong, China; Guangdong Key Laboratory of Animal Epidemic Diseases Prevention, Guangzhou 510640, Guangdong, China
| | - Huahua Kang
- Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, Guangdong, China; Public Laboratory of Veterinary Public Health of Guangdong Province, Guangzhou 510640, Guangdong, China; Guangdong Key Laboratory of Animal Epidemic Diseases Prevention, Guangzhou 510640, Guangdong, China
| | - Dongxia Yang
- Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, Guangdong, China; Public Laboratory of Veterinary Public Health of Guangdong Province, Guangzhou 510640, Guangdong, China; Guangdong Key Laboratory of Animal Epidemic Diseases Prevention, Guangzhou 510640, Guangdong, China
| | - Guoqing Li
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, Guangdong, China.
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Characterization and Vaccine Potential of Outer Membrane Vesicles Produced by Haemophilus parasuis. PLoS One 2016; 11:e0149132. [PMID: 26930282 PMCID: PMC4773134 DOI: 10.1371/journal.pone.0149132] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Accepted: 01/26/2016] [Indexed: 11/19/2022] Open
Abstract
Haemophilus parasuis is a Gram-negative bacterium that colonizes the upper respiratory tract of swine and is capable of causing a systemic infection, resulting in high morbidity and mortality. H. parasuis isolates display a wide range of virulence and virulence factors are largely unknown. Commercial bacterins are often used to vaccinate swine against H. parasuis, though strain variability and lack of cross-reactivity can make this an ineffective means of protection. Outer membrane vesicles (OMV) are spherical structures naturally released from the membrane of bacteria and OMV are often enriched in toxins, signaling molecules and other bacterial components. Examination of OMV structures has led to identification of virulence factors in a number of bacteria and they have been successfully used as subunit vaccines. We have isolated OMV from both virulent and avirulent strains of H. parasuis, have examined their protein content and assessed their ability to induce an immune response in the host. Vaccination with purified OMV derived from the virulent H. parasuis Nagasaki strain provided protection against challenge with a lethal dose of the bacteria.
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Protective Efficacy of an Inactive Vaccine Based on the LY02 Isolate against Acute Haemophilus parasuis Infection in Piglets. BIOMED RESEARCH INTERNATIONAL 2015; 2015:649878. [PMID: 26688815 PMCID: PMC4672103 DOI: 10.1155/2015/649878] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Revised: 10/11/2015] [Accepted: 10/12/2015] [Indexed: 11/18/2022]
Abstract
Haemophilus parasuis can cause Glässer's disease characterized by fibrinous polyserositis, polyarthritis, and meningitis. The current prevention of Glässer's disease is mainly based on the inactive vaccines; however, the protective efficacy usually fails in heterogeneous or homologous challenges. Here, the predominant lineage of H. parasuis (LY02 strain) in Fujian province, China, characterized as serovar 5, was used to evaluate the protective immunity against acute H. parasuis infection in piglets after inactivation. Following challenging with H. parasuis, only mild lesions in the pigs immunized with the killed vaccine were observed, whereas the typical symptoms of Glässer's disease presented in the nonimmunized piglets. A strong IgG immune response was induced by the inactive vaccine. CD4(+) and CD8(+) T lymphocyte levels were increased, indicating the potent cellular immune responses were elicited. The significantly high levels of IL-2, IL-4, TGF-β, and IFN-γ in sera from pigs immunized with this killed vaccine suggested that the mixed Th1 and Th2 immune responses were induced, associated with the high protection against H. parasuis infection compared to the nonimmunized animals. This study indicated that the inactivated LY02 strain of H. parasuis could serve as a potential vaccine candidate to prevent the prevalence of H. parasuis in Fujian province, China.
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First comparison of adjuvant for trivalent inactivated Haemophilus parasuis serovars 4, 5 and 12 vaccines against Glässer's disease. Vet Immunol Immunopathol 2015; 168:153-8. [DOI: 10.1016/j.vetimm.2015.11.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2015] [Revised: 09/16/2015] [Accepted: 11/02/2015] [Indexed: 11/23/2022]
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