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Zhang F, Meng Y, Xu L, Tian Y, Lu H, Xie J, Ma R, Li M, Li B. KbvR mutant of Klebsiella pneumoniae affects the synthesis of type 1 fimbriae and provides protection to mice as a live attenuated vaccine. Vet Res 2022; 53:97. [DOI: 10.1186/s13567-022-01116-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Accepted: 08/30/2022] [Indexed: 11/28/2022] Open
Abstract
AbstractKlebsiella pneumoniae is a leading cause of severe infections in humans and animals, and the emergence of multidrug-resistant strains highlights the need to develop effective vaccines for preventing such infections. Live attenuated vaccines are attractive vaccine candidates available in the veterinary field. We recently characterized that the K. pneumoniae kbvR (Klebsiella biofilm and virulence regulator) mutant was a highly attenuated strain in the mice model. In the present study, the characterization, safety, and protective efficacy of ΔkbvR strain as a live attenuated vaccine were evaluated. The synthesis and activity of type 1 fimbriae were increased in the ΔkbvR strain. All mice inoculated by the subcutaneous route with 105, 106, and 107 colony-forming units (CFU) doses of the ΔkbvR strain survived. Subcutaneous immunization with two doses of 105 or 107 CFU ΔkbvR elicited a robust humoral immune response, and provided protection against the following K. pneumoniae intraperitoneal infection. The antisera of mice immunized with 105 CFU dose improved the opsonophagocytic ability and complement-mediated lysis not only to the same serotype strain but also to the different serotype strain. The passive transfer of antisera from 105 CFU dose-immunized mice provided protection against K. pneumoniae infection. Overall, our results suggest the great potential of the ΔkbvR strain as a novel vaccine candidate against K. pneumoniae infections in herds or humans.
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Salhi L, Rijkschroeff P, Van Hede D, Laine ML, Teughels W, Sakalihasan N, Lambert F. Blood Biomarkers and Serologic Immunological Profiles Related to Periodontitis in Abdominal Aortic Aneurysm Patients. Front Cell Infect Microbiol 2022; 11:766462. [PMID: 35096635 PMCID: PMC8798408 DOI: 10.3389/fcimb.2021.766462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Accepted: 12/20/2021] [Indexed: 11/13/2022] Open
Abstract
Background Periodontitis is a chronic inflammatory gum disease associated with systemic diseases such as cardiovascular diseases. Aim To investigate the association of systemic blood biomarkers, C-reactive protein (CRP), levels of lipopolysaccharide (LPS), and IgG levels against periodontal pathogens Aggregatibacter actinomycetemcomitans (Aa) and Porphyromonas gingivalis (Pg) with the stability, based on the aortic diameter, the growth rate and the eligibility for surgical intervention, of patients with abdominal aortic aneurysm (AAA). Methods Patients with stable AAA (n = 30) and unstable AAA (n = 31) were recruited. The anti-A. actinomycetemcomitans and anti-P. gingivalis IgG levels were analyzed by ELISA, the LPS analysis was performed by using the limulus amebocyte lysate (LAL) test, and plasma levels of CRP were determined using an immune turbidimetric method. The association between these blood systemic biomarkers, AAA features, periodontal clinical parameters and oral microbial profiles were explored. Regression models were used to test the relationship between variables. Results The presence of antibodies against Pg and Aa, LPS and high CRP concentrations were found in all AAA patients. The IgG levels were similar in patients with stable and unstable AAA (both for Aa and Pg). Among investigated blood biomarkers, only CRP was associated with AAA stability. The amount of LPS in saliva, supra, and subgingival plaque were significantly associated with the systemic LPS (p <0.05). Conclusions This post-hoc study emphasizes the presence of antibodies against Pg and Aa, LPS and high CRP concentrations in all AAA patients. The presence of Pg in saliva and subgingival plaque was significantly associated with the blood LPS levels. For further studies investigating periodontitis and systemic diseases, specific predictive blood biomarkers should be considered instead of the use of antibodies alone.
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Affiliation(s)
- Leila Salhi
- Department of Periodontology, Buccal Surgery and Implantology, Faculty of Medicine, Liège, Belgium
- *Correspondence: Leila Salhi, ; orcid.org/0000-0003-3529-8452
| | - Patrick Rijkschroeff
- Department of Periodontology , Academic Centre for Dentistry Amsterdam, Vrije Universiteit (VU) Amsterdam, Amsterdam, Netherlands
| | - Dorien Van Hede
- Department of Periodontology, Buccal Surgery and Implantology, Faculty of Medicine, Liège, Belgium
| | - Marja L. Laine
- Department of Periodontology , Academic Centre for Dentistry Amsterdam, Vrije Universiteit (VU) Amsterdam, Amsterdam, Netherlands
| | - Wim Teughels
- Department of Oral Health Sciences, KU Leuven & Dentistry, University Hospitals Leuven, Leuven, Belgium
| | - Natzi Sakalihasan
- Department of Cardiovascular and Thoracic Surgery, Faculty of Medicine, Liège, Belgium
| | - France Lambert
- Department of Periodontology, Buccal Surgery and Implantology, Faculty of Medicine, Liège, Belgium
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3
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Myneni SR, Brocavich K, Wang H. Biological strategies for the prevention of periodontal disease: Probiotics and vaccines. Periodontol 2000 2020; 84:161-175. [DOI: 10.1111/prd.12343] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Srinivas Rao Myneni
- Department of Periodontology Stony Brook School of Dental Medicine Stony Brook University Stony Brook NY USA
| | - Kristen Brocavich
- Department of Periodontology Stony Brook School of Dental Medicine Stony Brook University Stony Brook NY USA
| | - Howard Wang
- Department of Periodontology Stony Brook School of Dental Medicine Stony Brook University Stony Brook NY USA
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4
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Taubman MA, Smith DJ. Mucosal Vaccines for Dental Diseases. Mucosal Immunol 2015. [DOI: 10.1016/b978-0-12-415847-4.00069-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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5
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Nakao R, Kikushima K, Higuchi H, Obana N, Nomura N, Bai D, Ohnishi M, Senpuku H. A novel approach for purification and selective capture of membrane vesicles of the periodontopathic bacterium, Porphyromonas gingivalis: membrane vesicles bind to magnetic beads coated with epoxy groups in a noncovalent, species-specific manner. PLoS One 2014; 9:e95137. [PMID: 24830438 PMCID: PMC4022494 DOI: 10.1371/journal.pone.0095137] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2013] [Accepted: 03/24/2014] [Indexed: 02/03/2023] Open
Abstract
Membrane vesicles (MVs) of Porphyromonas gingivalis are regarded as an offensive weapon of the bacterium, leading to tissue deterioration in periodontal disease. Therefore, isolation of highly purified MVs is indispensable to better understand the pathophysiological role of MVs in the progression of periodontitis. MVs are generally isolated by a conventional method based on ultracentrifugation of the bacterial culture supernatant. However, the resulting MVs are often contaminated with co-precipitating bacterial appendages sheared from the live bacteria. Here, we report an intriguing property of P. gingivalis MVs–their ability to bind superparamagnetic beads coated with epoxy groups (SB-Epoxy). Analysis of fractions collected during the purification revealed that all MVs of five tested P. gingivalis stains bound to SB-Epoxy. In contrast, free fimbriae in the crude MV preparation did not bind to the SB-Epoxy. The SB-Epoxy-bound MVs were easily dissociated from the SB-Epoxy using a mild denaturation buffer. These results suggest that the surface chemistry conferred by epoxy on the beads is responsible for the binding, which is mediated by noncovalent bonds. Both the structural integrity and purity of the isolated MVs were confirmed by electron microscopy. The isolated MVs also caused cell detachment from culture dishes at a physiologically relevant concentration. Assays of competitive binding between the SB-Epoxy and mixtures of MVs from five bacterial species demonstrated that only P. gingivalis MVs could be selectively eliminated from the mixtures. We suggest that this novel approach enables efficient purification and selective elimination of P. gingivalis MVs.
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Affiliation(s)
- Ryoma Nakao
- Department of Bacteriology I, National Institute of Infectious Diseases, Tokyo, Japan
- * E-mail:
| | - Kenji Kikushima
- Department of Science, The University of Tokyo, Tokyo, Japan
| | - Hideo Higuchi
- Department of Science, The University of Tokyo, Tokyo, Japan
| | - Nozomu Obana
- Faculty of Life and Environmental Sciences, University of Tsukuba, Ibaraki, Japan
| | - Nobuhiko Nomura
- Faculty of Life and Environmental Sciences, University of Tsukuba, Ibaraki, Japan
| | - Dongying Bai
- Department of Gerodontology, Graduate school of Tokyo Medical and Dental University, Tokyo, Japan
| | - Makoto Ohnishi
- Department of Bacteriology I, National Institute of Infectious Diseases, Tokyo, Japan
| | - Hidenobu Senpuku
- Department of Bacteriology I, National Institute of Infectious Diseases, Tokyo, Japan
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6
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Nagano K. FimA Fimbriae of the Periodontal Disease-associated Bacterium Porphyromonas gingivalis. YAKUGAKU ZASSHI 2013; 133:963-74. [DOI: 10.1248/yakushi.13-00177] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Keiji Nagano
- Department of Microbiology, School of Dentistry, Aichi Gakuin University
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7
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Choi JI, Seymour GJ. Vaccines against periodontitis: a forward-looking review. J Periodontal Implant Sci 2010; 40:153-63. [PMID: 20827324 PMCID: PMC2931303 DOI: 10.5051/jpis.2010.40.4.153] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2010] [Accepted: 07/02/2010] [Indexed: 12/18/2022] Open
Abstract
Periodontal disease, as a polymicrobial disease, is globally endemic as well as being a global epidemic. It is the leading cause for tooth loss in the adult population and has been positively related to life-threatening systemic diseases such as atherosclerosis and diabetes. As a result, it is clear that more sophisticated therapeutic modalities need to be developed, which may include vaccines. Up to now, however, no periodontal vaccine trial has been successful in satisfying all the requirements; to prevent the colonization of a multiple pathogenic biofilm in the subgingival area, to elicit a high level of effector molecules such as immunoglobulin sufficient to opsonize and phagocytose the invading organisms, to suppress the induced alveolar bone loss, or to stimulate helper T-cell polarization that exerts cytokine functions optimal for protection against bacteria and tissue destruction. This article reviews all the vaccine trials so as to construct a more sophisticated strategy which may be relevant in the future. As an innovative strategy to circumvent these barriers, vaccine trials to stimulate antigen-specific T-cells polarized toward helper T-cells with a regulatory phenotype (Tregs, CD4+, CD25+, FoxP3+) have also been introduced. Targeting not only a single pathogen, but polymicrobial organisms, and targeting not only periodontal disease, but also periodontal disease-triggered systemic disease could be a feasible goal.
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Affiliation(s)
- Jeom-Il Choi
- Department of Periodontology, Pusan National University School of Dentistry, Yangsan, Korea
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8
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Jong RAM, van der Reijden WA. Feasibility and therapeutic strategies of vaccines against Porphyromonas gingivalis. Expert Rev Vaccines 2010; 9:193-208. [PMID: 20109029 DOI: 10.1586/erv.09.156] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Periodontitis is a chronic infectious disease that is highly prevalent worldwide and is characterized by inflammation of the gums, and loss of connective tissue and bone support. The Gram-negative anerobic bacterium Porphyromonas gingivalis is generally accepted as the main etiological agent for chronic periodontitis. The objective of this paper is to elucidate the feasibility of achieving protection against periodontitis though immunization against P. gingivalis. Until now, animal studies have showed no complete protection against P. gingivalis. However, current knowledge about P. gingivalis structures could be applicable for further research to develop a successful licensed vaccine and alternative therapeutic strategies. This review reveals that a multicomponent vaccine against P. gingivalis, which includes structures shared among P. gingivalis serotypes, will be feasible to induce broad and complete protection.
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Affiliation(s)
- Rosa A M Jong
- Department of Oral Microbiology, Academic Centre for Dentistry Amsterdam, Universiteit van Amsterdam and Vrije Universiteit, Amsterdam, The Netherlands.
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9
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Kim TG, Huy NX, Kim MY, Jeong DK, Jang YS, Yang MS, Langridge WHR, Lee JY. Immunogenicity of a cholera toxin B subunit Porphyromonas gingivalis fimbrial antigen fusion protein expressed in E. coli. Mol Biotechnol 2008; 41:157-64. [PMID: 18807220 DOI: 10.1007/s12033-008-9102-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2008] [Accepted: 08/27/2008] [Indexed: 10/21/2022]
Abstract
The gram-negative anaerobic oral bacterium Porphyromonas gingivalis initiates periodontal disease through fimbrial attachment to saliva-coated oral surfaces. To study the effects of immunomodulation on enhancement of subunit vaccination, the expression in E. coli and immunogenicity of P. gingivalis fimbrial protein (FimA) linked to the C-terminus of the cholera toxin B subunit (CTB) were investigated. Complementary DNAs encoding the P. gingivalis 381 fimbrillin protein sequence FimA1 (amino acid residues 1-200) and FimA2 (amino acid residues 201-337) were cloned into an E. coli expression vector downstream of a cDNA fragment encoding the immunostimulatory CTB. CTB-FimA1 and CTB-FimA2 fusion proteins synthesized in E. coli BL21 (DE3) cells were purified under denaturing conditions by Ni2+-NTA affinity column chromatography. Renaturation of the CTB-FimA1 and CTB-FimA2 fusion proteins, permitted identification of CTB-FimA pentamers and restored CTB binding activity to GM1-ganglioside to provide a biologically active CTB-FimA fusion protein. Mice orally inoculated with purified CTB-FimA1 or CTB-FimA2 fusion proteins generated measurable FimA1 and FimA2 IgG antibody titers, while no serum fimbrial IgG antibodies were detected when mice were inoculated with FimA1 or FimA2 proteins alone. Immunoblot analysis confirmed that sera from mice immunized with CTB linked to FimA1 or FimA2 contained antibodies specific for P. gingivalis fimbrial proteins. In addition, mice immunized with FimA2 or CTB-FimA2 generated measurable intestinal IgA titers indicating the presence of fimbrial antibody class switching. Further, mice orally immunized with CTB-FimA1 generated higher IgA antibody titers than mice inoculated with FimA1 alone. The experimental data show that the immunostimulatory molecule CTB enhances B cell-mediated immunity against linked P. gingivalis FimA fusion proteins, in comparison to immunization with FimA protein alone. Thus, linkage of CTB to P. gingivalis fimbrial antigens can increase subunit vaccine immunogenicity to provide enhanced protection against periodontal disease.
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Affiliation(s)
- Tae-Geum Kim
- Division of Biological Sciences, Research Center for Bioactive Materials, Department of Periodontology, School of Dentistry, Chonbuk National University, Jeonju, 561-756, Republic of Korea
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10
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Sharma DCG, Prasad SBM, Karthikeyan BV. Vaccination against periodontitis: the saga continues. Expert Rev Vaccines 2007; 6:579-90. [PMID: 17669011 DOI: 10.1586/14760584.6.4.579] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Periodontal disease can be considered to be one of the most common chronic inflammatory diseases inflicting humans. With the advent of advanced molecular diagnostic techniques, a better understanding of the role of specific pathogens and the contributory role of the host immune response in the initiation and progression of periodontal disease has been possible - although not completely. However, successful vaccine development that fully utilizes the current level of understanding has not yet occurred for human use. This paper reviews various in vitro, animal studies and human trials undertaken to develop a vaccine against periodontal disease, with emphases on the shortfalls of these efforts and future prospects of developing a successful vaccine against periodontal disease.
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Affiliation(s)
- Dileep C G Sharma
- Department of Periodontics, KGF College of Dental Sciences, Kolar Gold Fields, Karnataka, India.
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11
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Page RC, Lantz MS, Darveau R, Jeffcoat M, Mancl L, Houston L, Braham P, Persson GR. Immunization of Macaca fascicularis against experimental periodontitis using a vaccine containing cysteine proteases purified from Porphyromonas gingivalis. ACTA ACUST UNITED AC 2007; 22:162-8. [PMID: 17488441 DOI: 10.1111/j.1399-302x.2007.00337.x] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
INTRODUCTION Periodontitis is a common infectious disease to which Porphyromonas gingivalis has been closely linked, in which the attachment tissues of the teeth and their alveolar bone housing are destroyed. We conducted a study to determine if immunization using a purified antigen could alter the onset and progression of the disease. METHODS Using the ligature-induced model of periodontitis in Macaca fascicularis, we immunized five animals with cysteine protease purified from P. gingivalis and used an additional five animals as controls. Alveolar bone loss was measured by digital subtraction radiography. RESULTS Immunization induced high titers of specific immunoglobuin G serum antibodies that were opsonic. Total bacterial load, levels of P. gingivalis in subgingival plaque and levels of prostaglandin E(2) in gingival crevicular fluid were significantly reduced. Onset and progression of alveolar bone loss was inhibited by approximately 50%. No manifestations of toxicity were observed. CONCLUSIONS Immunization using a purified protein antigen from P. gingivalis inhibits alveolar bone destruction in a ligature-induced periodontitis model in M. fascicularis.
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Affiliation(s)
- R C Page
- Department of Periodontics, and Regional Clinical Dental Research Center, School of Dentistry, Indiana University, Indianapolis, IN, USA.
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12
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Nagasawa T, Kiji M, Yashiro R, Hormdee D, Lu H, Kunze M, Suda T, Koshy G, Kobayashi H, Oda S, Nitta H, Ishikawa I. Roles of receptor activator of nuclear factor-kappaB ligand (RANKL) and osteoprotegerin in periodontal health and disease. Periodontol 2000 2007; 43:65-84. [PMID: 17214836 DOI: 10.1111/j.1600-0757.2006.00185.x] [Citation(s) in RCA: 84] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Toshiyuki Nagasawa
- Division of Periodontology, Department of Hard Tissue Engineering, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
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13
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Hajishengallis G. Potential for Immunological and Microbiological Intervention against Porphyromonas gingivalis Infection. J Oral Biosci 2007. [DOI: 10.1016/s1349-0079(07)80009-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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14
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Shin EA, Lee JY, Kim TG, Park YK, Langridge WHR. Synthesis and assembly of an adjuvanted Porphyromonas gingivalis fimbrial antigen fusion protein in plants. Protein Expr Purif 2005; 47:99-109. [PMID: 16275129 DOI: 10.1016/j.pep.2005.09.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2005] [Revised: 09/07/2005] [Accepted: 09/09/2005] [Indexed: 10/25/2022]
Abstract
The gram-negative anaerobic oral bacterium Porphyromonas gingivalis initiates periodontal disease by binding to saliva-coated oral surfaces. To assess whether edible plants can synthesize biologically active P. gingivalis fimbrial antigen, for application as an oral vaccine, a cDNA fragment encoding the C-terminal binding portion of P. gingivalis fimbrial protein (FimA), was cloned into a plant expression vector immediately downstream of a cDNA fragment encoding the cholera toxin B subunit (CTB). The chimeric plasmid was transferred into potato (Solanum tuberosum) cells and the ctb-fimA cDNA fragment detected in transformed leaf genomic DNA by PCR amplification methods. A novel protein band of 21 kDa was detected in transformed potato tuber extracts by immunoblot analysis. Oligomeric CTB-FimA (266-337) fusion protein was identified in the extracts through the binding of anti-CTX and anti-native fimbriae antibodies. The pentameric structure of CTB-FimA fusion protein was confirmed by ELISA measurements of GM1 ganglioside receptor binding. Quantification of the CTB-FimA fusion protein by ELISA indicated that the chimeric protein made up about 0.33% of total soluble tuber protein. The biosynthesis of immunologically detectable CTB-FimA fusion proteins and the assembly of fusion protein monomers into biologically active pentamers in transformed potato tuber tissues demonstrate the feasibility of synthesizing adjuvanted fimbrial protein in edible plants for development of adjuvanted mucosal vaccines against P. gingivalis generated periodontal disease.
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MESH Headings
- Adjuvants, Immunologic/administration & dosage
- Adjuvants, Immunologic/chemical synthesis
- Adjuvants, Immunologic/genetics
- Adjuvants, Immunologic/metabolism
- Antigens, Bacterial/administration & dosage
- Antigens, Bacterial/biosynthesis
- Antigens, Bacterial/genetics
- Antigens, Bacterial/metabolism
- Bacteroidaceae Infections/microbiology
- Bacteroidaceae Infections/prevention & control
- Cholera Toxin/administration & dosage
- Cholera Toxin/chemical synthesis
- Cholera Toxin/genetics
- Cholera Toxin/metabolism
- Fimbriae Proteins/administration & dosage
- Fimbriae Proteins/chemical synthesis
- Fimbriae Proteins/genetics
- Fimbriae Proteins/metabolism
- Humans
- Periodontal Diseases/microbiology
- Periodontal Diseases/prevention & control
- Plants, Genetically Modified
- Porphyromonas gingivalis/genetics
- Porphyromonas gingivalis/immunology
- Protein Binding/genetics
- Protein Binding/immunology
- Protein Structure, Tertiary/genetics
- Recombinant Fusion Proteins/administration & dosage
- Recombinant Fusion Proteins/chemical synthesis
- Recombinant Fusion Proteins/genetics
- Recombinant Fusion Proteins/metabolism
- Solanum tuberosum/genetics
- Solanum tuberosum/metabolism
- Vaccines, Subunit/administration & dosage
- Vaccines, Subunit/biosynthesis
- Vaccines, Subunit/genetics
- Vaccines, Subunit/metabolism
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Affiliation(s)
- Eun-Ah Shin
- Department of Biochemistry and Microbiology, Center for Molecular Biology and Gene Therapy, School of Medicine, Loma Linda University, Loma Linda, CA 92350, USA
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15
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Mucosal Vaccines for Dental Diseases. Mucosal Immunol 2005. [DOI: 10.1016/b978-012491543-5/50066-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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16
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O'Brien-Simpson NM, Veith PD, Dashper SG, Reynolds EC. Antigens of bacteria associated with periodontitis. Periodontol 2000 2004; 35:101-34. [PMID: 15107060 DOI: 10.1111/j.0906-6713.2004.003559.x] [Citation(s) in RCA: 84] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Neil M O'Brien-Simpson
- Centre for Oral Health Science, School of Dental Science, The University of Melbourne, Victoria, Australia
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17
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Jotwani R, Cutler CW. Fimbriated Porphyromonas gingivalis is more efficient than fimbria-deficient P. gingivalis in entering human dendritic cells in vitro and induces an inflammatory Th1 effector response. Infect Immun 2004; 72:1725-32. [PMID: 14977981 PMCID: PMC356045 DOI: 10.1128/iai.72.3.1725-1732.2004] [Citation(s) in RCA: 75] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Porphyromonas gingivalis is a fimbriated mucosal pathogen implicated in chronic periodontitis (CP). The fimbriae are required for invasion of the gingival mucosa and for induction of CP in animal models of periodontitis. CP is associated with infection of immature dendritic cells (DCs) by P. gingivalis in situ and with increased numbers of dermal DCs (DDCs) and mature DCs in the lamina propria. The role of fimbriae in gaining entry into human DCs and how this modulates the inflammatory and effector immune responses, however, have not been explored. To address this, we generated monocyte-derived DCs (MDDCs) in vitro which phenotypically and functionally resemble DDCs. We show here that virulent fimbriated P. gingivalis 381, in contrast to its fimbria-deficient mutant, P. gingivalis DPG3, efficiently gains entry to MDDCs in a manner dependent on active cell metabolism and cytoskeletal rearrangement. In addition, uptake of 381, unlike DPG3, induces DCs to undergo maturation, upregulate costimulatory molecules, and secrete inflammation cytokines interleukin-1beta (IL-1beta), IL-6, tumor necrosis factor alpha, IL-10, and IL-12. Moreover, MDDCs pulsed with 381 also stimulated a higher autologous mixed lymphocyte reaction and induced a Th1-type response, with gamma interferon (IFN-gamma) being the main cytokine. Monocytes used as controls demonstrated fimbria-dependent uptake of 381 as well but produced low levels of inflammatory cytokines compared to MDDCs. When MDDCs were pulsed with recombinant fimbrillin of P. gingivalis (10 micro g/ml), maturation of MDDCs was also induced; moreover, matured MDDCs induced proliferation of autologous CD4(+) T cells and release of IFN-gamma. Thus, these results establish the significance of P. gingivalis fimbriae in the uptake of P. gingivalis by MDDCs and in induction of immunostimulatory Th1 responses.
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Affiliation(s)
- Ravi Jotwani
- Department of Periodontics, School of Dental Medicine, Stony Brook University, Stony Brook, New York 11794-8703, USA
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18
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Miyabe H, Ishihara K, Kigure T, Okuda K. ANTI-PHAGOCYTIC ROLE OF SURFACE FIBROUS STRUCTURE OF AN INVASIVE PORPHYROMONAS GINGIVALIS STRAIN. THE BULLETIN OF TOKYO DENTAL COLLEGE 2004; 45:47-57. [PMID: 15346883 DOI: 10.2209/tdcpublication.45.47] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Recent studies have shown that invasive and non-invasive strains of Porphyromonas gingivalis can both be isolated from patients with periodontitis. We examined the interaction between an invasive 16-1 P. gingivalis strain and phagocytes obtained from human peripheral blood and guinea pig peritoneal cavity. Phagocytes from human peripheral blood, mainly polymorphonuclear leukocytes (PMNs) isolated by centrifugation in Ficoll Hypaque, and macrophages collected from the peritoneal cavity of guinea pigs, were exposed to P. gingivalis cells. After this exposure, greater numbers of the non-invasive P. gingivalis ATCC 33277 were observed in human PMNs and guinea pig macrophages compared with the invasive P. gingivalis 16-1. Electron microscopic observations showed that invasive 16-1 within phagosomes in human PMNs and guinea pig macrophages retained their surface fibrous structures as well as their outer membranes. Electron microscopic examination showed that destruction and damage to the cell membranes and inner structures were clear in human PMNs and guinea pig macrophages after exposure to invasive 16-1 for 6 and 24 hours; this was a clear difference from exposure to the non-invasive ATCC 33277. Release of lactate dehydrogenase (LDH) activities into the culture supernatant of PMNs after exposure to the invasive 16-1 for 4 and 6 hours was significantly greater than that after exposure to the non-invasive ATCC 33277 (p<0.05). On the other hand, the LDH activity after exposure for 21 hours to the invasive 16-1 was significantly lower than that of untreated cells and cells after exposure to the non-invasive ATCC 33277 strain (p<0.05). The PMN viabilities after exposure to cells of the invasive 16-1 for 3, 4, and 6 hours as evaluated by trypan blue staining were similar to those after exposure to cells of the non-invasive ATCC 33277, but that after exposure to the invasive 16-1 strain for 21 hours was significantly lower than that after exposure to cells of the non-invasive ATCC 33277 strain.
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Affiliation(s)
- Hideaki Miyabe
- Department of Microbiology, Tokyo Dental College, 1-2-2 Masago, Mihama-ku, Chiba 261-8502, Japan
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Fujimura S, Ueda O, Shibata Y, Hirai K. Isolation and properties of a tripeptidyl peptidase from a periodontal pathogen Prevotella nigrescens. FEMS Microbiol Lett 2003; 219:305-9. [PMID: 12620636 DOI: 10.1016/s0378-1097(03)00048-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Prolyltripeptidyl amino peptidase activity was found in a crude extract of Prevotella nigrescens and this enzyme was purified by procedures including concentration with ammonium sulfate, ion exchange chromatography, gel filtration, and isoelectric focusing. This peptidase hydrolyzed Ala-Ala-Pro-p-nitroanilide as well as Ala-Phe-Pro-p-nitroanilide. Furthermore, several p-nitroanilide derivatives of dipeptides with a proline residue in the second position from the amino-terminal end (Xaa-Pro) were also cleaved detectably. The molecular mass of this tripeptidase was calculated as 56 kDa and its isoelectric point was 5.8. The enzyme was inactivated completely by heating at 60 degrees C for 5 min and inhibited significantly by specific serine enzyme inhibitors.
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Affiliation(s)
- Setsuo Fujimura
- Department of Oral Microbiology, Matsumoto Dental University, Shiojiri-Shi, 399-0781, Nagano-Ken, Japan.
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