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Ramos-Vega A, Dzul-Huchim VM, Villanueva-Lizama LE, Dumonteil E, Rosales-Mendoza S, Bañuelos-Hernández B, Angulo M, Cruz-Chan JV, Monreal-Escalante E, Angulo C. Protective efficacy of the oral vaccine Tc24:Co1 produced in Schizochytrium sp. against Trypanosoma cruzi infection in a mouse model. Microb Pathog 2024; 186:106488. [PMID: 38061668 DOI: 10.1016/j.micpath.2023.106488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 11/22/2023] [Accepted: 11/30/2023] [Indexed: 01/02/2024]
Abstract
Trypanosoma cruzi parasite - causal Chagas disease agent - affects about 7 million people; no vaccine is available, and current medications have not been entirely effective. Multidisciplinary efforts are necessary for developing clinical vaccine prototypes. Thus, this research study aims to assess the expressed and whole-cell administration protection of the oral vaccine prototype Tc24:Co1 using Schizochytrium sp. microalga. High recombinant protein expression yields (675 μg/L) of algal culture were obtained. Additionally, Schizochytrium sp.-Tc24:Co1 resulted stable at 4 °C for up to six months and at 25 °C for three months. After receiving four oral doses of the vaccine, the mice showed a significant humoral immune response and a parasitemia reduction associated with a lack of heart inflammatory damage compared with the unvaccinated controls. The Schizochytrium sp.-Tc24:Co1 vaccine demonstrates to be promising as a prototype for further development showing protective effects against a T. cruzi challenge in a mouse model.
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Affiliation(s)
- Abel Ramos-Vega
- Immunology & Vaccinology Group, Centro de Investigaciones Biológicas del Noroeste, La Paz, B.C.S., Mexico
| | - Victor Manuel Dzul-Huchim
- Laboratorio de Parasitología, Centro de Investigaciones Regionales Dr. Hideyo Noguchi, Universidad Autónoma de Yucatán, Mérida, Yucatán, Mexico
| | - Liliana Estefania Villanueva-Lizama
- Laboratorio de Parasitología, Centro de Investigaciones Regionales Dr. Hideyo Noguchi, Universidad Autónoma de Yucatán, Mérida, Yucatán, Mexico
| | - Eric Dumonteil
- Deparment of Tropical Medicine and Infectious Diseases, School of Public Health and Tropical Medicine, Tulane University, New Orleans, LA, USA
| | - Sergio Rosales-Mendoza
- Laboratorio de Biofarmacéuticos Recombinantes, Facultad de Ciencias Químicas, UASLP, San Luis Potosí, Mexico; Sección de Biotecnología, Centro de Investigación en Ciencias de la Salud y Biomedicina, UASLP, San Luis Potosí, Mexico
| | | | - Miriam Angulo
- Immunology & Vaccinology Group, Centro de Investigaciones Biológicas del Noroeste, La Paz, B.C.S., Mexico
| | - Julio Vladimir Cruz-Chan
- Laboratorio de Parasitología, Centro de Investigaciones Regionales Dr. Hideyo Noguchi, Universidad Autónoma de Yucatán, Mérida, Yucatán, Mexico
| | - Elizabeth Monreal-Escalante
- Immunology & Vaccinology Group, Centro de Investigaciones Biológicas del Noroeste, La Paz, B.C.S., Mexico; CONAHCYT-Centro de Investigaciones Biológicas del Noroeste, La Paz, B.C.S., Mexico.
| | - Carlos Angulo
- Immunology & Vaccinology Group, Centro de Investigaciones Biológicas del Noroeste, La Paz, B.C.S., Mexico.
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Chen Y, Fu Y, Kong L, Wang F, Peng X, Zhang Z, Shi Q, Wu Q, Wu T. Pal Affects the Proliferation in Macrophages and Virulence of Brucella, and as Mucosal Adjuvants, Provides an Effective Protection to Mice Against Salmonella Enteritidis. Curr Microbiol 2023; 80:2. [PMID: 36418790 PMCID: PMC9684781 DOI: 10.1007/s00284-022-03107-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2022] [Accepted: 10/31/2022] [Indexed: 11/25/2022]
Abstract
The purpose of this study was to elucidate the roles of peptidoglycan-associated lipoprotein (Pal protein) in the proliferation of Brucella in macrophage and bacterial virulence, and to evaluate the immune effect of Pal protein to Salmonella enteritidis. Murine macrophage-like cell line Raw264.7 was stimulated by recombinant Pal protein, and the expression of TNF-α and IFN-γ were up-regulated, but not it of IL-1β and IL-6. The macrophages infection and in vitro simulated stress assays showed that deletion of pal gene reduced the proliferation of Brucella in macrophages, the survival in acidic, oxidative and polymyxin B-contained environment. The mice infection assay showed that mice challenged with the pal mutant strain were found to have more severe splenomegaly, but less bacterial load. After oral immunization of mice, Pal protein induced a higher titer of mucosal and humoral antibody (IgA and IgG) against heat-killed Salmonella enteritidis, and a stronger Th1 cellular immune response. The challengte experiments showed Pal protein elevated the survival rate and reduced the bacterial load of spleens in immunized mice. In conclusion, our results revealed the important roles of pal gene in Brucella virulence, and Pal protein was a potentially valuable adjuvant against mucosal pathogens, such as Salmonella enteritidis.
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Affiliation(s)
- Yubin Chen
- College of Animal Science and Technology, Hebei Normal University of Science & Technology, NO.123, Road Xueyuan, District Changli, Qinhuangdao, 066600, People's Republic of China
| | - Yanfang Fu
- Hebei Provincial Animal Husbandry Station, Shijiazhuang, People's Republic of China
| | - Lingcong Kong
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, People's Republic of China
| | - Fengjie Wang
- College of Animal Science and Technology, Hebei Normal University of Science & Technology, NO.123, Road Xueyuan, District Changli, Qinhuangdao, 066600, People's Republic of China
| | - Xiaowei Peng
- China Institute of Veterinary Drug Control, Beijing, People's Republic of China
| | - Zhiqiang Zhang
- College of Animal Science and Technology, Hebei Normal University of Science & Technology, NO.123, Road Xueyuan, District Changli, Qinhuangdao, 066600, People's Republic of China
| | - Qiumei Shi
- College of Animal Science and Technology, Hebei Normal University of Science & Technology, NO.123, Road Xueyuan, District Changli, Qinhuangdao, 066600, People's Republic of China
| | - Qingmin Wu
- Key Laboratory of Animal Epidemiology and Zoonosis of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing, People's Republic of China
| | - Tonglei Wu
- College of Animal Science and Technology, Hebei Normal University of Science & Technology, NO.123, Road Xueyuan, District Changli, Qinhuangdao, 066600, People's Republic of China.
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3
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Tamjid N, Eskandari S, Karimi Z, Nezafat N, Negahdaripour M. Vaccinomics strategy to design an epitope peptide vaccine against Helicobacter pylori. Process Biochem 2022. [DOI: 10.1016/j.procbio.2022.07.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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4
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Coria LM, Saposnik LM, Pueblas Castro C, Castro EF, Bruno LA, Stone WB, Pérez PS, Darriba ML, Chemes LB, Alcain J, Mazzitelli I, Varese A, Salvatori M, Auguste AJ, Álvarez DE, Pasquevich KA, Cassataro J. A Novel Bacterial Protease Inhibitor Adjuvant in RBD-Based COVID-19 Vaccine Formulations Containing Alum Increases Neutralizing Antibodies, Specific Germinal Center B Cells and Confers Protection Against SARS-CoV-2 Infection in Mice. Front Immunol 2022; 13:844837. [PMID: 35296091 PMCID: PMC8919065 DOI: 10.3389/fimmu.2022.844837] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Accepted: 02/01/2022] [Indexed: 01/18/2023] Open
Abstract
In this work, we evaluated recombinant receptor binding domain (RBD)-based vaccine formulation prototypes with potential for further clinical development. We assessed different formulations containing RBD plus alum, AddaS03, AddaVax, or the combination of alum and U-Omp19: a novel Brucella spp. protease inhibitor vaccine adjuvant. Results show that the vaccine formulation composed of U-Omp19 and alum as adjuvants has a better performance: it significantly increased mucosal and systemic neutralizing antibodies in comparison to antigen plus alum, AddaVax, or AddaS03. Antibodies induced with the formulation containing U-Omp19 and alum not only increased their neutralization capacity against the ancestral virus but also cross-neutralized alpha, lambda, and gamma variants with similar potency. Furthermore, the addition of U-Omp19 to alum vaccine formulation increased the frequency of RBD-specific geminal center B cells and plasmablasts. Additionally, U-Omp19+alum formulation induced RBD-specific Th1 and CD8+ T-cell responses in spleens and lungs. Finally, this vaccine formulation conferred protection against an intranasal severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) challenge of K18-hACE2 mice.
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Affiliation(s)
- Lorena M. Coria
- Instituto de Investigaciones Biotecnológicas Dr. Rodolfo A. Ugalde, Universidad Nacional de San Martín, Consejo Nacional de Investigaciones Científicas y Técnicas (UNSAM-CONICET), San Martín, Argentina
| | - Lucas M. Saposnik
- Instituto de Investigaciones Biotecnológicas Dr. Rodolfo A. Ugalde, Universidad Nacional de San Martín, Consejo Nacional de Investigaciones Científicas y Técnicas (UNSAM-CONICET), San Martín, Argentina
| | - Celeste Pueblas Castro
- Instituto de Investigaciones Biotecnológicas Dr. Rodolfo A. Ugalde, Universidad Nacional de San Martín, Consejo Nacional de Investigaciones Científicas y Técnicas (UNSAM-CONICET), San Martín, Argentina
| | - Eliana F. Castro
- Instituto de Investigaciones Biotecnológicas Dr. Rodolfo A. Ugalde, Universidad Nacional de San Martín, Consejo Nacional de Investigaciones Científicas y Técnicas (UNSAM-CONICET), San Martín, Argentina
- Instituto de Virología e Innovaciones Tecnológicas (IVIT), Centro de Investigaciones en Ciencias Veterinarias y Agronómicas (CICVyA), Instituto Nacional de Tecnología Agropecuaria (INTA)-Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Laura A. Bruno
- Instituto de Investigaciones Biotecnológicas Dr. Rodolfo A. Ugalde, Universidad Nacional de San Martín, Consejo Nacional de Investigaciones Científicas y Técnicas (UNSAM-CONICET), San Martín, Argentina
| | - William B. Stone
- Department of Entomology, College of Agriculture and Life Sciences, Fralin Life Science Institute, Virginia Polytechnic Institute and State University, Blacksburg, VA, United States
| | - Paula S. Pérez
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS, Universidad de Buenos Aires-CONICET), Buenos Aires, Argentina
| | - Maria Laura Darriba
- Instituto de Investigaciones Biotecnológicas Dr. Rodolfo A. Ugalde, Universidad Nacional de San Martín, Consejo Nacional de Investigaciones Científicas y Técnicas (UNSAM-CONICET), San Martín, Argentina
| | - Lucia B. Chemes
- Instituto de Investigaciones Biotecnológicas Dr. Rodolfo A. Ugalde, Universidad Nacional de San Martín, Consejo Nacional de Investigaciones Científicas y Técnicas (UNSAM-CONICET), San Martín, Argentina
| | - Julieta Alcain
- Instituto de Investigaciones Biotecnológicas Dr. Rodolfo A. Ugalde, Universidad Nacional de San Martín, Consejo Nacional de Investigaciones Científicas y Técnicas (UNSAM-CONICET), San Martín, Argentina
| | - Ignacio Mazzitelli
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS, Universidad de Buenos Aires-CONICET), Buenos Aires, Argentina
| | - Augusto Varese
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS, Universidad de Buenos Aires-CONICET), Buenos Aires, Argentina
| | - Melina Salvatori
- Instituto de Investigaciones Biomédicas en Retrovirus y SIDA (INBIRS, Universidad de Buenos Aires-CONICET), Buenos Aires, Argentina
| | - Albert J. Auguste
- Department of Entomology, College of Agriculture and Life Sciences, Fralin Life Science Institute, Virginia Polytechnic Institute and State University, Blacksburg, VA, United States
- Center for Emerging, Zoonotic, and Arthropod-borne Pathogens, Virginia Polytechnic Institute and State University, Blacksburg, VA, United States
| | - Diego E. Álvarez
- Instituto de Investigaciones Biotecnológicas Dr. Rodolfo A. Ugalde, Universidad Nacional de San Martín, Consejo Nacional de Investigaciones Científicas y Técnicas (UNSAM-CONICET), San Martín, Argentina
| | - Karina A. Pasquevich
- Instituto de Investigaciones Biotecnológicas Dr. Rodolfo A. Ugalde, Universidad Nacional de San Martín, Consejo Nacional de Investigaciones Científicas y Técnicas (UNSAM-CONICET), San Martín, Argentina
- *Correspondence: Karina A. Pasquevich, ; Juliana Cassataro,
| | - Juliana Cassataro
- Instituto de Investigaciones Biotecnológicas Dr. Rodolfo A. Ugalde, Universidad Nacional de San Martín, Consejo Nacional de Investigaciones Científicas y Técnicas (UNSAM-CONICET), San Martín, Argentina
- *Correspondence: Karina A. Pasquevich, ; Juliana Cassataro,
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Laura Darriba M, Castro CP, Coria LM, Bruno L, Laura Cerutti M, Otero LH, Chemes LB, Rasia RM, Klinke S, Cassataro J, Pasquevich KA. A disordered region retains the full protease inhibitor activity and the capacity to induce CD8+ T cells in vivo of the oral vaccine adjuvant U-Omp19. Comput Struct Biotechnol J 2022; 20:5098-5114. [PMID: 36187929 PMCID: PMC9486555 DOI: 10.1016/j.csbj.2022.08.054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 08/24/2022] [Accepted: 08/25/2022] [Indexed: 01/18/2023] Open
Affiliation(s)
- M. Laura Darriba
- Instituto de Investigaciones Biotecnológicas, Universidad Nacional de San Martín (UNSAM) – Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
- Escuela de Bio y Nanotecnologías (EByN), Universidad Nacional de San Martín, Buenos Aires, Argentina
| | - Celeste Pueblas Castro
- Instituto de Investigaciones Biotecnológicas, Universidad Nacional de San Martín (UNSAM) – Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
- Escuela de Bio y Nanotecnologías (EByN), Universidad Nacional de San Martín, Buenos Aires, Argentina
| | - Lorena M. Coria
- Instituto de Investigaciones Biotecnológicas, Universidad Nacional de San Martín (UNSAM) – Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
- Escuela de Bio y Nanotecnologías (EByN), Universidad Nacional de San Martín, Buenos Aires, Argentina
| | - Laura Bruno
- Instituto de Investigaciones Biotecnológicas, Universidad Nacional de San Martín (UNSAM) – Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
- Escuela de Bio y Nanotecnologías (EByN), Universidad Nacional de San Martín, Buenos Aires, Argentina
| | - M. Laura Cerutti
- Instituto de Investigaciones Biotecnológicas, Universidad Nacional de San Martín (UNSAM) – Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
- Escuela de Bio y Nanotecnologías (EByN), Universidad Nacional de San Martín, Buenos Aires, Argentina
| | - Lisandro H. Otero
- Fundación Instituto Leloir, IIBBA-CONICET, and Plataforma Argentina de Biología Estructural y Metabolómica PLABEM, Buenos Aires, Argentina
| | - Lucía B. Chemes
- Instituto de Investigaciones Biotecnológicas, Universidad Nacional de San Martín (UNSAM) – Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
- Escuela de Bio y Nanotecnologías (EByN), Universidad Nacional de San Martín, Buenos Aires, Argentina
| | - Rodolfo M. Rasia
- Instituto de Biología Molecular y Celular de Rosario (IBR-CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Santa Fe, Argentina and Plataforma Argentina de Biología Estructural y Metabolómica PLABEM, Buenos Aires, Argentina
| | - Sebastián Klinke
- Fundación Instituto Leloir, IIBBA-CONICET, and Plataforma Argentina de Biología Estructural y Metabolómica PLABEM, Buenos Aires, Argentina
| | - Juliana Cassataro
- Instituto de Investigaciones Biotecnológicas, Universidad Nacional de San Martín (UNSAM) – Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
- Escuela de Bio y Nanotecnologías (EByN), Universidad Nacional de San Martín, Buenos Aires, Argentina
| | - Karina A. Pasquevich
- Instituto de Investigaciones Biotecnológicas, Universidad Nacional de San Martín (UNSAM) – Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
- Escuela de Bio y Nanotecnologías (EByN), Universidad Nacional de San Martín, Buenos Aires, Argentina
- Corresponding author.
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Zai X, Yin Y, Guo F, Yang Q, Li R, Li Y, Zhang J, Xu J, Chen W. Screening of potential vaccine candidates against pathogenic Brucella spp. using compositive reverse vaccinology. Vet Res 2021; 52:75. [PMID: 34078437 PMCID: PMC8170439 DOI: 10.1186/s13567-021-00939-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Accepted: 03/04/2021] [Indexed: 11/25/2022] Open
Abstract
Brucella spp. are Gram-negative, facultative intracellular bacteria that cause brucellosis in humans and various animals. The threat of brucellosis has increased, yet currently available live attenuated vaccines still have drawbacks. Therefore, subunit vaccines, produced using protein antigens and having the advantage of being safe, cost-effective and efficacious, are urgently needed. In this study, we used core proteome analysis and a compositive RV methodology to screen potential broad-spectrum antigens against 213 pathogenic strains of Brucella spp. with worldwide geographic distribution. Candidate proteins were scored according to six biological features: subcellular localization, antigen similarity, antigenicity, mature epitope density, virulence, and adhesion probability. In the RV analysis, a total 32 candidate antigens were picked out. Of these, three proteins were selected for assessment of immunogenicity and preliminary protection in a mouse model: outer membrane protein Omp19 (used as a positive control), type IV secretion system (T4SS) protein VirB8, and type I secretion system (T1SS) protein HlyD. These three antigens with a high degree of conservation could induce specific humoral and cellular immune responses. Omp19, VirB8 and HlyD could substantially reduce the organ bacterial load of B. abortus S19 in mice and provide varying degrees of protection. In this study, we demonstrated the effectiveness of this unique strategy for the screening of potential broad-spectrum antigens against Brucella. Further evaluation is needed to identify the levels of protection conferred by the vaccine antigens against wild-type pathogenic Brucella species challenge.
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Affiliation(s)
- Xiaodong Zai
- Laboratory of Vaccine and Antibody Engineering, Beijing Institute of Biotechnology, Beijing, China
| | - Ying Yin
- Laboratory of Vaccine and Antibody Engineering, Beijing Institute of Biotechnology, Beijing, China
| | - Fengyu Guo
- Laboratory of Vaccine and Antibody Engineering, Beijing Institute of Biotechnology, Beijing, China
| | - Qiaoling Yang
- Laboratory of Vaccine and Antibody Engineering, Beijing Institute of Biotechnology, Beijing, China
| | - Ruihua Li
- Laboratory of Vaccine and Antibody Engineering, Beijing Institute of Biotechnology, Beijing, China
| | - Yaohui Li
- Laboratory of Vaccine and Antibody Engineering, Beijing Institute of Biotechnology, Beijing, China
| | - Jun Zhang
- Laboratory of Vaccine and Antibody Engineering, Beijing Institute of Biotechnology, Beijing, China
| | - Junjie Xu
- Laboratory of Vaccine and Antibody Engineering, Beijing Institute of Biotechnology, Beijing, China.
| | - Wei Chen
- Laboratory of Vaccine and Antibody Engineering, Beijing Institute of Biotechnology, Beijing, China.
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Zhao J, Zhang Y, Chen Y, Zhang J, Pei J, Cui M, Fu ZF, Zhao L, Zhou M. A novel oral rabies vaccine enhances the immunogenicity through increasing dendritic cells activation and germinal center formation by expressing U-OMP19 in a mouse model. Emerg Microbes Infect 2021; 10:913-928. [PMID: 33905300 PMCID: PMC8143638 DOI: 10.1080/22221751.2021.1923341] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Rabies remains a public health threat in most parts of the world. Dogs, especially stray dogs, are the main sources of rabies transmission in developing countries, while wild animals are primarily responsible for the spread of rabies in developed countries and play an emerging role in rabies transmission in developing countries. Oral vaccination is the most practical method for rabies control in these animals, and the greatest challenge for oral vaccination is the hostile environment and large quantity of proteases in the gastrointestinal tract. In the present study, a promising adjuvant with potential protease inhibitory activity, unlipidated outer membrane protein 19 (U-OMP19), was inserted into the genome of the recombinant rabies virus (rRABV) strain LBNSE, designated LBNSE-U-OMP19, and the immunogenicity of LBNSE-U-OMP19 was investigated. LBNSE-U-OMP19 could potentially protect viral glycoprotein from digestion by gastrointestinal fluids in vitro. The expression of U-OMP19 attenuated viral pathogenicity by restricting viral replication in the central nervous system (CNS) and repressing the production of inflammatory chemokines and cytokines. After oral vaccination, LBNSE-U-OMP19 recruited dendritic cells (DCs), follicular helper T (TFH) cells and germinal center (GC) B cells, promoted the formation of GCs, and increased the population of plasma cells in immunized mice, resulting in higher levels of RABV-neutralizing antibodies and better protection in mice immunized with LBNSE-U-OMP19 than in those immunized with the parent virus LBNSE. Together, our data suggest that LBNSE-U-OMP19 is a promising candidate for oral rabies vaccines.
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Affiliation(s)
- Jianqing Zhao
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, People's Republic of China.,Key Laboratory of Preventive Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, People's Republic of China
| | - Yijing Zhang
- Key Laboratory of Preventive Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, People's Republic of China
| | - Yixi Chen
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, People's Republic of China.,Key Laboratory of Preventive Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, People's Republic of China
| | - Juntao Zhang
- Key Laboratory of Preventive Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, People's Republic of China
| | - Jie Pei
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, People's Republic of China.,Key Laboratory of Preventive Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, People's Republic of China
| | - Min Cui
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, People's Republic of China.,Key Laboratory of Preventive Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, People's Republic of China
| | - Zhen F Fu
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, People's Republic of China.,Key Laboratory of Preventive Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, People's Republic of China
| | - Ling Zhao
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, People's Republic of China.,Key Laboratory of Preventive Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, People's Republic of China
| | - Ming Zhou
- Key Laboratory of Preventive Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, People's Republic of China
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8
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Ramos-Vega A, Monreal-Escalante E, Dumonteil E, Bañuelos-Hernández B, Angulo C. Plant-made vaccines against parasites: bioinspired perspectives to fight against Chagas disease. Expert Rev Vaccines 2021; 20:1373-1388. [PMID: 33612044 DOI: 10.1080/14760584.2021.1893170] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Introduction: Three decades of evidence have demonstrated that plants are an affordable platform for biopharmaceutical production and delivery. For instance, several plant-made recombinant proteins have been approved for commercialization under good manufacturing practice (GMP). Thus far, plant-based vaccine prototypes have been evaluated at pre- and clinical levels. Particularly, plant-made vaccines against parasitic diseases, such as malaria, cysticercosis, and toxoplasmosis have been successfully produced and orally delivered with promising outcomes in terms of immunogenicity and protection. The experience on several approaches and technical strategies over 30 years accounts for their potential low-cost, high scalability, and easy administration.Areas covered: This platform is an open technology to fight against Chagas disease, one of the most important neglected tropical diseases worldwide.Expert opinion: This review provides a perspective for the potential use of plants as a production platform and delivery system of Trypanosoma cruzi recombinant antigens, analyzing the advantages and limitations with respect to plant-made vaccines produced for other parasitic diseases. Plant-made vaccines are envisioned to fight against Chagas disease and other neglected tropical diseases in those countries suffering endemic prevalence.
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Affiliation(s)
- Abel Ramos-Vega
- Grupo de Inmunología & Vacunología. Centro de Investigaciones Biológicas del Noroeste, S.C. (CIBNOR), Instituto Politécnico Nacional 195, Playa Palo de Santa Rita Sur, La Paz, B.c.s. C.p., México
| | - Elizabeth Monreal-Escalante
- Grupo de Inmunología & Vacunología. Centro de Investigaciones Biológicas del Noroeste, S.C. (CIBNOR), Instituto Politécnico Nacional 195, Playa Palo de Santa Rita Sur, La Paz, B.c.s. C.p., México.,CONACYT- Centro de Investigaciones Biológicas del Noroeste, S.C. (CIBNOR), Instituto Politécnico Nacional 195, Playa Palo de Santa Rita Sur, La Paz, B.c.s. C.p, México
| | - Eric Dumonteil
- Department of Tropical Medicine, School of Public Health and Tropical Medicine, and Vector-Borne and Infectious Disease Research Center, Tulane University, New Orleans, LA, USA
| | - Bernardo Bañuelos-Hernández
- Facultad de Agronomía Y Veterinaria, Universidad de La Salle Bajio, Avenida Universidad 602, Lomas del Campestre, León Guanajuato, México
| | - Carlos Angulo
- Grupo de Inmunología & Vacunología. Centro de Investigaciones Biológicas del Noroeste, S.C. (CIBNOR), Instituto Politécnico Nacional 195, Playa Palo de Santa Rita Sur, La Paz, B.c.s. C.p., México
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9
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Nikam PS, Kingston JJ, Belagal Motatis AK. Oral co-administration of bivalent protein r-BL with U-Omp19 elicits mucosal immune responses and reduces S. Typhimurium shedding in BALB/c mice. Immunol Lett 2021; 231:61-67. [PMID: 33460704 DOI: 10.1016/j.imlet.2021.01.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Revised: 12/15/2020] [Accepted: 01/11/2021] [Indexed: 01/18/2023]
Abstract
The increase in international food trade and travel has dramatically increased the global incidences of Salmonellosis. In the light of widespread resistance to frontline antibiotics, oral vaccines remain the most reliable alternative. In this study, the fusion protein, r-BL was rationally constructed by splicing the Salmonella Typhimurium sseB and ompL genes through G4S linker by over-lap extension PCR. The oral coadministration of r-BL with B. abortus U-Omp19 protein with known protease inhibitor activity resulted in significant increase of mucosal IgA titres to antilog 4.5051 (p < 0.0001) and 4.806 (p < 0.0001) in the fecal samples and intestinal washes respectively. Antibody isotyping of the intestinal washes demonstrated increase in mucosal IgM, IgG1 and IgG2a isotypes also and demonstrated a significant reduction in fecal shedding of S. Typhimurium in challenge study. The r-BL + U-Omp19 treated mice demonstrated a complete termination of Salmonella fecal shedding by the 12th day of challenge as compared to other study groups. In summary, the bivalent protein r-BL when administered with the mucosal adjuvant U-Omp19 was successful in triggering mucosal arm of the immune system which forms the first line of defence in combating the infections caused by the enteric pathogen like Salmonella.
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Affiliation(s)
- Pradnya Sukhadev Nikam
- Department of Microbiology, Defence Food Research Laboratory, Siddarthanagar, Mysuru, Karnataka, 570011, India.
| | - Joseph J Kingston
- Department of Microbiology, Defence Food Research Laboratory, Siddarthanagar, Mysuru, Karnataka, 570011, India.
| | - Anil Kumar Belagal Motatis
- Department of Microbiology, Defence Food Research Laboratory, Siddarthanagar, Mysuru, Karnataka, 570011, India.
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Yin D, Bai Q, Li L, Xu K, Zhang J. Study on immunogenicity and antigenicity of a novel brucella multiepitope recombined protein. Biochem Biophys Res Commun 2021; 540:37-41. [PMID: 33429198 DOI: 10.1016/j.bbrc.2020.12.098] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 12/27/2020] [Indexed: 10/22/2022]
Abstract
Currently, brucellosis is a reemerged zoonotic infectious disease with an increased incidence in recent years. A simple, rapid and sensitive method for diagnosing brucellosis can help to reduce medical burden and economic loss. Previously, a multiple epitope recombinant protein was constructed based on linear B-cell epitope prediction tools. In this study, the recombinant protein was used as an antigen to study the immune response produced by immunized mice, and goat serum was used to verify its diagnostic accuracy. The production of antibodies was successfully induced in the vaccinated mice. Flow cytometric analysis revealed that the percentage of CD4+, CD8+ and the CD4+/CD8+ ratios were increased by T cell subsets in mouse splenocytes, indicating that the recombinant protein induced a strong immune response had strong immunoreactivity. Using indirect ELISA, the recombinant protein correctly diagnosed positive and negative brucellosis samples. Compared with the whole bacterial antigen, the recombinant protein had a weaker sensitivity but a stronger specificity. Animal experiments showed that the recombinant protein had good antigenicity, and indirect ELISA indicates that it can be used as an antigen to diagnose brucellosis. Therefore, the recombinant protein is a potential candidate antigen for brucellosis vaccine development and serological diagnosis.
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Affiliation(s)
- Dehui Yin
- Key Lab of Environment and Health, School of Public Health, Xuzhou Medical University, Xuzhou, 221004, China
| | - Qiongqiong Bai
- Key Lab of Environment and Health, School of Public Health, Xuzhou Medical University, Xuzhou, 221004, China
| | - Li Li
- School of Public Health, Jilin University, Changchun, 130021, China
| | - Kun Xu
- School of Public Health, Jilin University, Changchun, 130021, China
| | - Jinpeng Zhang
- Key Lab of Environment and Health, School of Public Health, Xuzhou Medical University, Xuzhou, 221004, China.
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11
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Caeiro LD, Masip YE, Rizzi M, Rodríguez ME, Pueblas Castro C, Sánchez DO, Coria ML, Cassataro J, Tekiel V. The Trypanosoma cruzi TcTASV-C protein subfamily administrated with U-Omp19 promotes a protective response against a lethal challenge in mice. Vaccine 2020; 38:7645-7653. [PMID: 33071003 DOI: 10.1016/j.vaccine.2020.10.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 09/28/2020] [Accepted: 10/02/2020] [Indexed: 01/08/2023]
Abstract
The development of a Chagaś disease vaccine has yet the need for the identification of novel combinations of antigens and adjuvants. Here, the performance of TcTASV-C proteins that are virulence factors of trypomastigotes and belong to a novel surface protein family specific for T. cruzi, have been evaluated as antigens for a prophylactic vaccine. Several immunization schemes in which TcTASV-C was combined with aluminum hydroxide, saponin and/or U-Omp19 were assayed. Aluminum hydroxide and saponin were assayed together to trigger different pathways of the immune response simultaneously. U-Omp19 is a promising novel adjuvant able to promote a Th1 immune response with IFNg production, thus an interesting molecule to be tested as adjuvant for the control of T. cruzi infection. Therefore, U-Omp19 was added to the aluminum hydroxide-saponin formulation as well as assayed individually with TcTASV-C. The immunization with TcTASV-C and U-Omp19 had the best performance as a prophylactic vaccine. Mice presented the lowest parasitemias and improved survival by 40% after being challenged with a highly virulent T. cruzi strain, which promoted 100% mortality in all other immunized groups. Immunization with TcTASV-C and U-Omp19 triggered cellular responses with IFN-γ and IL-17 production and with lytic antibodies that could explain the protection achieved by this vaccination scheme. To our knowledge, this is the first time that U-Omp19 is tested with a defined T. cruzi antigen in a vaccine formulation.
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Affiliation(s)
- Lucas D Caeiro
- Instituto de Investigaciones Biotecnológicas (IIBio), Universidad Nacional de San Martín (UNSAM) - CONICET, Av. 25 de Mayo y Francia, Campus UNSAM, San Martín (1650), Provincia de Buenos Aires, Argentina.
| | - Yamil E Masip
- Instituto de Investigaciones Biotecnológicas (IIBio), Universidad Nacional de San Martín (UNSAM) - CONICET, Av. 25 de Mayo y Francia, Campus UNSAM, San Martín (1650), Provincia de Buenos Aires, Argentina.
| | - Mariana Rizzi
- Instituto de Investigaciones Biotecnológicas (IIBio), Universidad Nacional de San Martín (UNSAM) - CONICET, Av. 25 de Mayo y Francia, Campus UNSAM, San Martín (1650), Provincia de Buenos Aires, Argentina.
| | - Matías E Rodríguez
- Instituto de Investigaciones Biotecnológicas (IIBio), Universidad Nacional de San Martín (UNSAM) - CONICET, Av. 25 de Mayo y Francia, Campus UNSAM, San Martín (1650), Provincia de Buenos Aires, Argentina.
| | - Celeste Pueblas Castro
- Instituto de Investigaciones Biotecnológicas (IIBio), Universidad Nacional de San Martín (UNSAM) - CONICET, Av. 25 de Mayo y Francia, Campus UNSAM, San Martín (1650), Provincia de Buenos Aires, Argentina.
| | - Daniel O Sánchez
- Instituto de Investigaciones Biotecnológicas (IIBio), Universidad Nacional de San Martín (UNSAM) - CONICET, Av. 25 de Mayo y Francia, Campus UNSAM, San Martín (1650), Provincia de Buenos Aires, Argentina.
| | - M Lorena Coria
- Instituto de Investigaciones Biotecnológicas (IIBio), Universidad Nacional de San Martín (UNSAM) - CONICET, Av. 25 de Mayo y Francia, Campus UNSAM, San Martín (1650), Provincia de Buenos Aires, Argentina.
| | - Juliana Cassataro
- Instituto de Investigaciones Biotecnológicas (IIBio), Universidad Nacional de San Martín (UNSAM) - CONICET, Av. 25 de Mayo y Francia, Campus UNSAM, San Martín (1650), Provincia de Buenos Aires, Argentina.
| | - Valeria Tekiel
- Instituto de Investigaciones Biotecnológicas (IIBio), Universidad Nacional de San Martín (UNSAM) - CONICET, Av. 25 de Mayo y Francia, Campus UNSAM, San Martín (1650), Provincia de Buenos Aires, Argentina.
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Darriba ML, Cerutti ML, Bruno L, Cassataro J, Pasquevich KA. Stability Studies of the Vaccine Adjuvant U-Omp19. J Pharm Sci 2020; 110:707-718. [PMID: 33058898 PMCID: PMC7815325 DOI: 10.1016/j.xphs.2020.10.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 09/24/2020] [Accepted: 10/08/2020] [Indexed: 01/18/2023]
Abstract
Unlipidated outer membrane protein 19 (U-Omp19) is a novel mucosal adjuvant in preclinical development to be used in vaccine formulations. U-Omp19 holds two main properties, it is capable of inhibiting gastrointestinal and lysosomal peptidases, increasing the amount of co-administered antigen that reaches the immune inductive sites and its half-life inside cells, and it is able to stimulate antigen presenting cells in vivo. These activities enable U-Omp19 to enhance the adaptive immune response to co-administrated antigens. To characterize the stability of U-Omp19 we have performed an extensive analysis of its physicochemical and biological properties in a 3-year long-term stability study, and under potentially damaging freeze-thawing and lyophilization stress processes. Results revealed that U-Omp19 retains its full protease inhibitor activity, its monomeric state and its secondary structure even when stored in solution for 36 months or after multiple freeze-thawing cycles. Non-enzymatic hydrolysis resulted the major degradation pathway for storage in solution at 4 °C or room temperature which can be abrogated by lyophilization yet increasing protein tendency to form aggregates. This information will play a key role in the development of a stable formulation of U-Omp19, allowing an extended shelf-life during manufacturing, storage, and shipping of a future vaccine containing this pioneering adjuvant.
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Affiliation(s)
- M Laura Darriba
- Instituto de Investigaciones Biotecnológicas (UNSAM-CONICET), Universidad Nacional de San Martín, Buenos Aires, Argentina
| | - María L Cerutti
- Fundación Instituto Leloir, IIBBA-CONICET, Buenos Aires, Argentina.
| | - Laura Bruno
- Instituto de Investigaciones Biotecnológicas (UNSAM-CONICET), Universidad Nacional de San Martín, Buenos Aires, Argentina
| | - Juliana Cassataro
- Instituto de Investigaciones Biotecnológicas (UNSAM-CONICET), Universidad Nacional de San Martín, Buenos Aires, Argentina
| | - Karina A Pasquevich
- Instituto de Investigaciones Biotecnológicas (UNSAM-CONICET), Universidad Nacional de San Martín, Buenos Aires, Argentina.
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Moon J, Kim S, Kim W, Rao Z, Park J, Park B, Hur J. Protective efficacy of the recombinant lysozyme-PMAP36 fusion protein-inactivated Salmonella Typhimurium vaccine candidate via oral immunization in a murine model. CANADIAN JOURNAL OF VETERINARY RESEARCH = REVUE CANADIENNE DE RECHERCHE VETERINAIRE 2020; 84:241-244. [PMID: 32801461 PMCID: PMC7301672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Accepted: 02/14/2019] [Indexed: 06/11/2023]
Abstract
The aim of this study was to evaluate protective efficacy of S. Typhimurium ghost vaccine candidate lysed by the recombinant lysozyme-PMAP36 fusion protein via oral immunization in a murine model. Sixty BALB/c mice were equally divided into 4 groups. Group A mice were inoculated with 20 μL of sterile phosphate-buffered saline (PBS). Groups B-D mice were immunized with approximately 1 × 107, 1 × 108, and 1 × 109 cells of the vaccine candidate, respectively, in 20 μL of PBS. Salmonella-outermembrane-proteins-specific serum IgG was considerably higher in groups B-D than in group A. The interleukin-10 and interferon-γ levels in groups B-D were significantly higher than in group A. Following challenge with wild-type S. Typhimurium, all immunized groups showed a significant level of protection compared with group A. The highest protection was shown in group D. Overall, these results show that oral immunization with the candidate vaccine can effectively protect mice from S. Typhimurium infection.
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Affiliation(s)
- Jayoung Moon
- Veterinary Public Health, College of Veterinary Medicine, Chonbuk National University, Gobong-ro 79, Iksan 54596, Republic of Korea (Jayoung Moon, Wonkyong Kim, Jin Hur); Division of Biotechnology, College of Environmental & Bioresources Sciences, Chonbuk National University, Gobong-ro 79, Iksan, Jeollabuk-do, 54596, Republic of Kore (Soyoung Kim, Zhili Rao, Junghee Park); Veterinary Histology, College of Veterinary Medicine, Chonbuk National University, Gobong-ro 79, Iksan, Jeollabuk-do, Republic of Korea (Byungyong Park)
| | - Soyoung Kim
- Veterinary Public Health, College of Veterinary Medicine, Chonbuk National University, Gobong-ro 79, Iksan 54596, Republic of Korea (Jayoung Moon, Wonkyong Kim, Jin Hur); Division of Biotechnology, College of Environmental & Bioresources Sciences, Chonbuk National University, Gobong-ro 79, Iksan, Jeollabuk-do, 54596, Republic of Kore (Soyoung Kim, Zhili Rao, Junghee Park); Veterinary Histology, College of Veterinary Medicine, Chonbuk National University, Gobong-ro 79, Iksan, Jeollabuk-do, Republic of Korea (Byungyong Park)
| | - Wonkyong Kim
- Veterinary Public Health, College of Veterinary Medicine, Chonbuk National University, Gobong-ro 79, Iksan 54596, Republic of Korea (Jayoung Moon, Wonkyong Kim, Jin Hur); Division of Biotechnology, College of Environmental & Bioresources Sciences, Chonbuk National University, Gobong-ro 79, Iksan, Jeollabuk-do, 54596, Republic of Kore (Soyoung Kim, Zhili Rao, Junghee Park); Veterinary Histology, College of Veterinary Medicine, Chonbuk National University, Gobong-ro 79, Iksan, Jeollabuk-do, Republic of Korea (Byungyong Park)
| | - Zhili Rao
- Veterinary Public Health, College of Veterinary Medicine, Chonbuk National University, Gobong-ro 79, Iksan 54596, Republic of Korea (Jayoung Moon, Wonkyong Kim, Jin Hur); Division of Biotechnology, College of Environmental & Bioresources Sciences, Chonbuk National University, Gobong-ro 79, Iksan, Jeollabuk-do, 54596, Republic of Kore (Soyoung Kim, Zhili Rao, Junghee Park); Veterinary Histology, College of Veterinary Medicine, Chonbuk National University, Gobong-ro 79, Iksan, Jeollabuk-do, Republic of Korea (Byungyong Park)
| | - Junghee Park
- Veterinary Public Health, College of Veterinary Medicine, Chonbuk National University, Gobong-ro 79, Iksan 54596, Republic of Korea (Jayoung Moon, Wonkyong Kim, Jin Hur); Division of Biotechnology, College of Environmental & Bioresources Sciences, Chonbuk National University, Gobong-ro 79, Iksan, Jeollabuk-do, 54596, Republic of Kore (Soyoung Kim, Zhili Rao, Junghee Park); Veterinary Histology, College of Veterinary Medicine, Chonbuk National University, Gobong-ro 79, Iksan, Jeollabuk-do, Republic of Korea (Byungyong Park)
| | - Byungyong Park
- Veterinary Public Health, College of Veterinary Medicine, Chonbuk National University, Gobong-ro 79, Iksan 54596, Republic of Korea (Jayoung Moon, Wonkyong Kim, Jin Hur); Division of Biotechnology, College of Environmental & Bioresources Sciences, Chonbuk National University, Gobong-ro 79, Iksan, Jeollabuk-do, 54596, Republic of Kore (Soyoung Kim, Zhili Rao, Junghee Park); Veterinary Histology, College of Veterinary Medicine, Chonbuk National University, Gobong-ro 79, Iksan, Jeollabuk-do, Republic of Korea (Byungyong Park)
| | - Jin Hur
- Veterinary Public Health, College of Veterinary Medicine, Chonbuk National University, Gobong-ro 79, Iksan 54596, Republic of Korea (Jayoung Moon, Wonkyong Kim, Jin Hur); Division of Biotechnology, College of Environmental & Bioresources Sciences, Chonbuk National University, Gobong-ro 79, Iksan, Jeollabuk-do, 54596, Republic of Kore (Soyoung Kim, Zhili Rao, Junghee Park); Veterinary Histology, College of Veterinary Medicine, Chonbuk National University, Gobong-ro 79, Iksan, Jeollabuk-do, Republic of Korea (Byungyong Park)
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U-Omp19 from Brucella abortus increases dmLT immunogenicity and improves protection against Escherichia coli heat-labile toxin (LT) oral challenge. Vaccine 2020; 38:5027-5035. [PMID: 32536545 PMCID: PMC7327514 DOI: 10.1016/j.vaccine.2020.05.039] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 05/13/2020] [Accepted: 05/15/2020] [Indexed: 01/18/2023]
Abstract
Oral co-administration of dmLT with U-Omp19 increases dmLT immunogenicity. U-Omp19 oral co-delivery with dmLT induces anti-LT antibody responses. U-Omp19 co-administered with dmLT protects against oral challenge with LT. U-Omp19 can allow antigen dose sparing by oral route. U-Omp19 can be used as adjuvant in an oral vaccine formulation against ETEC.
Acute diarrhea disease caused by bacterial infections is a major global health problem. Enterotoxigenic Escherichia coli (ETEC) is one of the top causes of diarrhea-associated morbidity and mortality in young children and travelers to low-income countries. There are currently no licensed vaccines for ETEC. Induction of immunity at the site of entry of the bacteria is key to prevent infection. Current approaches to ETEC vaccines include a less toxic mutant form of E. coli heat-labile toxin (double-mutant heat-labile enterotoxin -dmLT-) with both antigenic and immunostimulatory properties. U-Omp19 is a protease inhibitor from Brucella spp. with immunostimulatory properties that has been used as oral adjuvant. In this work, we use U-Omp19 as adjuvant in an oral vaccine formulation against ETEC containing dmLT in outbred and inbred mice. To evaluate antigen dose sparing by U-Omp19 three different immunization protocols with three different doses of dmLT were evaluated. We demonstrated that U-Omp19 co-delivery increases anti-LT IgA in feces using a mid-dose of dmLT following a prime-boost protocol (after one or two boosts). Oral immunization with U-Omp19 induced protection against LT challenge when co-formulated with dmLT in CD-1 and BALB/c mice. Indeed, there was a significant increase in anti-LT IgG and IgA avidity after a single oral administration of dmLT plus U-Omp19 in comparison with dmLT delivered alone. Interestingly, sera from dmLT plus U-Omp19 vaccinated mice significantly neutralize LT effect on intestine inflammation in vivo compared with sera from the group immunized with dmLT alone. These results demonstrate the adjuvant capacity of U-Omp19 to increase dmLT immunogenicity by the oral route and support its use in an oral subunit vaccine formulation against ETEC.
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Elicitation of Th1/Th2 related responses in mice by chitosan nanoparticles loaded with Brucella abortus malate dehydrogenase, outer membrane proteins 10 and 19. Int J Med Microbiol 2019; 310:151362. [PMID: 31676233 DOI: 10.1016/j.ijmm.2019.151362] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Revised: 09/04/2019] [Accepted: 10/10/2019] [Indexed: 11/22/2022] Open
Abstract
Brucella spp. is the causative agent of brucellosis, one of the worldwide diseases. The pathogen infects humans and animals mainly through the digestive or respiratory tract. Therefore, induction of mucosal immunity is required as the first line of defense. In this study, three Brucella abortus recombinant proteins, malate dehydrogenase (rMdh), outer membrane proteins (rOmp) 10 and 19 were loaded in mucoadhesive chitosan nanoparticles (CNs) and induction of mucosal and systemic immunity were investigated after intranasal immunization of BALB/c mice. These antigens were also coimmunized as cocktail (rCocktail) to evaluate multiple antigen specific vaccine candidates. At 6-weeks post-immunization (wpi), antigen specific total IgG was increased in all of the immunized groups, predominantly IgG1. In addition, spleenocyte from rMdh-, rOmp19-, and rCocktail-immunized groups significantly produced IFN-γ and IL-4 suggesting the induction of a mixed Th1-Th2 response. For mucosal immunity, anti-Mdh IgA from nasal washes and fecal excretions, and anti-Omps IgA from sera, nasal washes, genital secretions and fecal excretions were significantly increased in single antigen immunized groups. In the rCocktail-immunized group, anti-Mdh IgA were significantly increased while anti-Omps IgA was not. Collectively, this study indicates that comprise of B. abortus antigen-loaded CNs elicited the antigen-specific IgA with a Th2-polarized immune responses and combination of the highly immunogenic antigens elicited IgG specific to each type of antigen.
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Sarkar I, Garg R, van Drunen Littel-van den Hurk S. Selection of adjuvants for vaccines targeting specific pathogens. Expert Rev Vaccines 2019; 18:505-521. [PMID: 31009255 PMCID: PMC7103699 DOI: 10.1080/14760584.2019.1604231] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
INTRODUCTION Adjuvants form an integral component in most of the inactivated and subunit vaccine formulations. Careful and proper selection of adjuvants helps in promoting appropriate immune responses against target pathogens at both innate and adaptive levels such that protective immunity can be elicited. Areas covered: Herein, we describe the recent progress in our understanding of the mode of action of adjuvants that are licensed for use in human vaccines or in clinical or pre-clinical stages at both innate and adaptive levels. Different pathogens have distinct characteristics, which require the host to mount an appropriate immune response against them. Adjuvants can be selected to elicit a tailor-made immune response to specific pathogens based on their unique properties. Identification of biomarkers of adjuvanticity for several candidate vaccines using omics-based technologies can unravel the mechanism of action of modern and experimental adjuvants. Expert opinion: Adjuvant technology has been revolutionized over the last two decades. In-depth understanding of the role of adjuvants in activating the innate immune system, combined with systems vaccinology approaches, have led to the development of next-generation, novel adjuvants that can be used in vaccines against challenging pathogens and in specific target populations.
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Affiliation(s)
- Indranil Sarkar
- a VIDO-InterVac , University of Saskatchewan , Saskatoon , Canada.,b Microbiology and Immunology , University of Saskatchewan , Saskatoon , Canada
| | - Ravendra Garg
- a VIDO-InterVac , University of Saskatchewan , Saskatoon , Canada
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Oral co-administration of a bacterial protease inhibitor in the vaccine formulation increases antigen delivery at the intestinal epithelial barrier. J Control Release 2018; 293:158-171. [PMID: 30496771 PMCID: PMC6329890 DOI: 10.1016/j.jconrel.2018.11.025] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 11/19/2018] [Accepted: 11/26/2018] [Indexed: 01/18/2023]
Abstract
The study of capture and processing of antigens (Ags) by intestinal epithelial cells is very important for development of new oral administration systems. Efficient oral Ag delivery systems must resist enzymatic degradation by gastric and intestinal proteases and deliver the Ag across biological barriers. The recombinant unlipidated outer membrane protein from Brucella spp. (U-Omp19) is a protease inhibitor with immunostimulatory properties used as adjuvant in oral vaccine formulations. In the present work we further characterized its mechanism of action and studied the interaction and effect of U-Omp19 on the intestinal epithelium. We found that U-Omp19 inhibited protease activity from murine intestinal brush-border membranes and cysteine proteases from human intestinal epithelial cells (IECs) promoting co-administered Ag accumulation within lysosomal compartments of IECs. In addition, we have shown that co-administration of U-Omp19 facilitated the transcellular passage of Ag through epithelial cell monolayers in vitro and in vivo while did not affect epithelial cell barrier permeability. Finally, oral co-delivery of U-Omp19 in mice induced the production of Ag-specific IgA in feces and the increment of CD103+ CD11b− CD8α+ dendritic cells subset at Peyer's patches. Taken together, these data describe a new mechanism of action of a mucosal adjuvant and support the use of this rationale/strategy in new oral delivery systems for vaccines. The bacterial protease inhibitor U-Omp19 limits antigens proteolysis by enterocytes. Oral co-administration of U-Omp19 increases antigen half-life inside enterocytes. U-Omp19 oral administration does not affect epithelial cell barrier permeability. Oral co-delivery of U-Omp19 increases frequency of dendritic cells bearing antigen. U-Omp19 increases the half-life and immunogenicity of cholera toxin subunit B antigen.
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18
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Xu X, Gong L, Wang B, Wu Y, Wang Y, Mei X, Xu H, Tang L, Liu R, Zeng Z, Mao Y, Li W. Glycyrrhizin Attenuates Salmonella enterica Serovar Typhimurium Infection: New Insights Into Its Protective Mechanism. Front Immunol 2018; 9:2321. [PMID: 30459751 PMCID: PMC6232675 DOI: 10.3389/fimmu.2018.02321] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Accepted: 09/18/2018] [Indexed: 12/23/2022] Open
Abstract
Glycyrrhizin (GL), a triterpenoid glycoside, serves important functions in various biological activities, including antiviral and antitumor immune responses. However, the anti-inflammatory effects of GL on Salmonella enterica serovar Typhimurium (ST)-induced injury in mice and the mechanisms underlying the protection of GL are poorly understood. Here, we investigated the effects of GL on host immune responses against ST infection in mice. A phenotypic analysis using hematoxylin and eosin (H&E) staining and transmission electron microscopy showed that GL relieved ST-induced weight loss and intestinal mucosal injury. A colonization assay showed that GL significantly reduced ST colonization in the ileum and colon and translocation to the liver and spleen. An antibacterial activity assay and real-time PCR revealed that GL had no direct inhibitory impact on ST growth or virulence gene expression. ELISA showed that GL pretreatment significantly decreased proinflammatory cytokine (IFN-γ, TNF-α, IL-6) secretion and increased anti-inflammatory cytokine (IL-10) secretion in the ileum, colon and serum of ST-infected mice. Moreover, flora analysis showed that GL reduced Akkermansia, Sutterella, Prevotella and Coprococcus but enriched Parabacteroides and Anaerotruncus in the cecum of ST-infected mice. These results suggest that GL promotes the secretion of immune factors and modulates intestinal flora to prevent further ST infection. We also analyzed the effect of GL on immunocytes and found that GL promoted the phenotypic and functional maturation of murine bone marrow-derived dendritic cells (BMDCs). Flow cytometry and western blotting demonstrated that NF-κB, ERK, and p38 MAPK were required for GL-induced BMDC maturation. The above findings indicate that GL attenuates ST infection by modulating immune function and intestinal flora. This study enriches our current knowledge of GL-mediated immunological function and provides a new perspective on the prevention of Salmonella infection in animals and humans.
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Affiliation(s)
- Xiaogang Xu
- Key Laboratory of Molecular Animal Nutrition of the Ministry of Education, Institute of Feed Science, College of Animal Sciences, Zhejiang University, Hangzhou, China.,Zhejiang Hospital & Zhejiang Provincial Key Lab of Geriatrics, Hangzhou, China
| | - Li Gong
- Key Laboratory of Molecular Animal Nutrition of the Ministry of Education, Institute of Feed Science, College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Baikui Wang
- Key Laboratory of Molecular Animal Nutrition of the Ministry of Education, Institute of Feed Science, College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Yanping Wu
- Key Laboratory of Molecular Animal Nutrition of the Ministry of Education, Institute of Feed Science, College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Yang Wang
- Key Laboratory of Molecular Animal Nutrition of the Ministry of Education, Institute of Feed Science, College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Xiaoqiang Mei
- Key Laboratory of Molecular Animal Nutrition of the Ministry of Education, Institute of Feed Science, College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Han Xu
- Key Laboratory of Molecular Animal Nutrition of the Ministry of Education, Institute of Feed Science, College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Li Tang
- Key Laboratory of Molecular Animal Nutrition of the Ministry of Education, Institute of Feed Science, College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Rongrong Liu
- Key Laboratory of Molecular Animal Nutrition of the Ministry of Education, Institute of Feed Science, College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Zhonghua Zeng
- Key Laboratory of Molecular Animal Nutrition of the Ministry of Education, Institute of Feed Science, College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Yulong Mao
- Key Laboratory of Molecular Animal Nutrition of the Ministry of Education, Institute of Feed Science, College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Weifen Li
- Key Laboratory of Molecular Animal Nutrition of the Ministry of Education, Institute of Feed Science, College of Animal Sciences, Zhejiang University, Hangzhou, China
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MacDonald J. History and Promise of Plant-Made Vaccines for Animals. PROSPECTS OF PLANT-BASED VACCINES IN VETERINARY MEDICINE 2018. [PMCID: PMC7122757 DOI: 10.1007/978-3-319-90137-4_1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Moon JY, Kim SY, Kim WK, Rao Z, Park JH, Mun JY, Kim B, Choi HS, Hur J. Protective efficacy of a Salmonella Typhimurium ghost vaccine candidate constructed with a recombinant lysozyme-PMAP36 fusion protein in a murine model. CANADIAN JOURNAL OF VETERINARY RESEARCH = REVUE CANADIENNE DE RECHERCHE VETERINAIRE 2017; 81:297-303. [PMID: 29081588 PMCID: PMC5644453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Accepted: 04/20/2017] [Indexed: 06/07/2023]
Abstract
A Salmonella Typhimurium ghost vaccine was constructed with the use of a recombinant fusion protein consisting of lysozyme and porcine myeloid antimicrobial peptide 36 expressed by the Escherichia coli overexpression system. After confirmation of its effectiveness by transmission electron microscopy the vaccine was evaluated in a murine model. Of the 60 BALB/c mice equally divided into 4 groups, group A mice were intramuscularly inoculated with 100 μL of sterile phosphate-buffered saline, and the mice in groups B, C, and D were intramuscularly inoculated with approximately 1.0 × 104, 1.0 × 105, or 1.0 × 106 cells of the S. Typhimurium ghost vaccine, respectively, in 100-μL amounts. The serum IgG titers against S. Typhimurium outer membrane proteins were significantly higher in groups B to D than in group A, as were the concentrations of interleukin-10 and interferon gamma in supernatants of harvested splenocytes. After challenge with wild-type S. Typhimurium, all the vaccinated groups showed significant protection compared with group A, notably perfect protection in groups C and D. Overall, these results show that intramuscular vaccination with 1.0 × 105 cells of this ghost vaccine candidate provided efficient protection against systemic infection with virulent S. Typhimurium.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Jin Hur
- Address all correspondence to Dr. Jin Hur; telephone: +82-63-850-0959; fax: +82-63-850-0910; e-mail:
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