51
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Yam KK, Hugentobler F, Pouliot P, Stern AM, Lalande JD, Matlashewski G, Olivier M, Cousineau B. Generation and evaluation of A2-expressing Lactococcus lactis live vaccines against Leishmania donovani in BALB/c mice. J Med Microbiol 2011; 60:1248-1260. [PMID: 21527547 DOI: 10.1099/jmm.0.029959-0] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Leishmaniasis is a parasitic disease affecting over 12 million individuals worldwide. As current treatments are insufficient, the development of an effective vaccine is a priority. This study generated and assessed the efficacy of Leishmania vaccines engineered from the non-colonizing, non-pathogenic Gram-positive bacterium Lactococcus lactis. A truncated, codon-optimized version of the A2 antigen from Leishmania donovani was engineered for expression in Lactococcus lactis in three different subcellular compartments: in the cytoplasm, secreted outside the cell or anchored to the cell wall. These three A2-expressing Lactococcus lactis strains were tested for their ability to generate A2-specific immune responses and as live vaccines against visceral Leishmania donovani infection in BALB/c mice. Subcutaneous immunization with live Lactococcus lactis expressing A2 anchored to the cell wall effectively induced high levels of antigen-specific serum antibodies. It was demonstrated that Lactococcus lactis-based vaccines are a feasible approach in the generation of live vaccines against leishmaniasis. The Lactococcus lactis strains generated in this study provide an excellent foundation for further studies on live bacterial vaccines against leishmaniasis and other pathogens.
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Affiliation(s)
- Karen K Yam
- Department of Microbiology and Immunology, McGill University, 3775 University Street, Montreal, QC H3A 2B4, Canada
| | - Felix Hugentobler
- Department of Microbiology and Immunology, McGill University, 3775 University Street, Montreal, QC H3A 2B4, Canada
| | - Philippe Pouliot
- Department of Microbiology and Immunology, McGill University, 3775 University Street, Montreal, QC H3A 2B4, Canada
| | - Andrew M Stern
- Department of Microbiology and Immunology, McGill University, 3775 University Street, Montreal, QC H3A 2B4, Canada
| | - Jean-Daniel Lalande
- Department of Microbiology and Immunology, McGill University, 3775 University Street, Montreal, QC H3A 2B4, Canada
| | - Greg Matlashewski
- Department of Microbiology and Immunology, McGill University, 3775 University Street, Montreal, QC H3A 2B4, Canada
| | - Martin Olivier
- Centre for the Study of Host Resistance, Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada.,Department of Microbiology and Immunology, McGill University, 3775 University Street, Montreal, QC H3A 2B4, Canada
| | - Benoit Cousineau
- Department of Microbiology and Immunology, McGill University, 3775 University Street, Montreal, QC H3A 2B4, Canada
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52
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Bøhle LA, Riaz T, Egge-Jacobsen W, Skaugen M, Busk ØL, Eijsink VGH, Mathiesen G. Identification of surface proteins in Enterococcus faecalis V583. BMC Genomics 2011; 12:135. [PMID: 21362161 PMCID: PMC3059304 DOI: 10.1186/1471-2164-12-135] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2010] [Accepted: 03/01/2011] [Indexed: 01/12/2023] Open
Abstract
BACKGROUND Surface proteins are a key to a deeper understanding of the behaviour of Gram-positive bacteria interacting with the human gastro-intestinal tract. Such proteins contribute to cell wall synthesis and maintenance and are important for interactions between the bacterial cell and the human host. Since they are exposed and may play roles in pathogenicity, surface proteins are interesting targets for drug design. RESULTS Using methods based on proteolytic "shaving" of bacterial cells and subsequent mass spectrometry-based protein identification, we have identified surface-located proteins in Enterococcus faecalis V583. In total 69 unique proteins were identified, few of which have been identified and characterized previously. 33 of these proteins are predicted to be cytoplasmic, whereas the other 36 are predicted to have surface locations (31) or to be secreted (5). Lipid-anchored proteins were the most dominant among the identified surface proteins. The seemingly most abundant surface proteins included a membrane protein with a potentially shedded extracellular sulfatase domain that could act on the sulfate groups in mucin and a lipid-anchored fumarate reductase that could contribute to generation of reactive oxygen species. CONCLUSIONS The present proteome analysis gives an experimental impression of the protein landscape on the cell surface of the pathogenic bacterium E. faecalis. The 36 identified secreted (5) and surface (31) proteins included several proteins involved in cell wall synthesis, pheromone-regulated processes, and transport of solutes, as well as proteins with unknown function. These proteins stand out as interesting targets for further investigation of the interaction between E. faecalis and its environment.
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Affiliation(s)
- Liv Anette Bøhle
- Department of Chemistry, Biotechnology, and Food Science, The Norwegian University of Life Sciences, Ås, Norway
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53
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Immunogenicity of orally administrated recombinant Lactobacillus casei Zhang expressing Cryptosporidium parvum surface adhesion protein P23 in mice. Curr Microbiol 2011; 62:1573-80. [PMID: 21336991 DOI: 10.1007/s00284-011-9894-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2010] [Accepted: 01/31/2011] [Indexed: 10/18/2022]
Abstract
Cryptosporidium parvum, an intestinal apicomplexan parasite, is a significant cause of diarrheal diseases in both humans and animals. What is more, there is no promising strategy for controlling cryptosporidiosis. In this study, the P23 immunodominant surface protein of C. parvum sporozoites was stably expressed in the Lactobacillus casei Zhang strain and its immunogenicity was evaluated in a mouse model. The molecular weight (23 kDa) and immunogenicity of p23 gene expressed by L. casei Zhang were similar to that of the native P23 protein. Oral immunization with control L. casei Zhang and recombinant L. casei Zhang-p23 activated the mucosal immune system to elicit serum immunoglobulin G (IgG) and mucosal IgA in mice. Furthermore, the expression of cytokines such as IL-4, IL-6, and IFN-γ in splenocytes of mice was detected by real-time PCR after oral immunization. P23-specific immunocyte activation was also verified. These findings indicate that the live L. casei Zhang vector may be a new tool for the production of mucosal vaccines against cryptosporidiosis in animals.
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54
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Lactobacillus acidophilus as a live vehicle for oral immunization against chicken anemia virus. Appl Microbiol Biotechnol 2010; 90:77-88. [DOI: 10.1007/s00253-010-3050-0] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2010] [Revised: 11/29/2010] [Accepted: 11/30/2010] [Indexed: 10/18/2022]
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55
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Wieczorek AS, Martin VJJ. Engineering the cell surface display of cohesins for assembly of cellulosome-inspired enzyme complexes on Lactococcus lactis. Microb Cell Fact 2010; 9:69. [PMID: 20840763 PMCID: PMC2949795 DOI: 10.1186/1475-2859-9-69] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2010] [Accepted: 09/14/2010] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND The assembly and spatial organization of enzymes in naturally occurring multi-protein complexes is of paramount importance for the efficient degradation of complex polymers and biosynthesis of valuable products. The degradation of cellulose into fermentable sugars by Clostridium thermocellum is achieved by means of a multi-protein "cellulosome" complex. Assembled via dockerin-cohesin interactions, the cellulosome is associated with the cell surface during cellulose hydrolysis, forming ternary cellulose-enzyme-microbe complexes for enhanced activity and synergy. The assembly of recombinant cell surface displayed cellulosome-inspired complexes in surrogate microbes is highly desirable. The model organism Lactococcus lactis is of particular interest as it has been metabolically engineered to produce a variety of commodity chemicals including lactic acid and bioactive compounds, and can efficiently secrete an array of recombinant proteins and enzymes of varying sizes. RESULTS Fragments of the scaffoldin protein CipA were functionally displayed on the cell surface of Lactococcus lactis. Scaffolds were engineered to contain a single cohesin module, two cohesin modules, one cohesin and a cellulose-binding module, or only a cellulose-binding module. Cell toxicity from over-expression of the proteins was circumvented by use of the nisA inducible promoter, and incorporation of the C-terminal anchor motif of the streptococcal M6 protein resulted in the successful surface-display of the scaffolds. The facilitated detection of successfully secreted scaffolds was achieved by fusion with the export-specific reporter staphylococcal nuclease (NucA). Scaffolds retained their ability to associate in vivo with an engineered hybrid reporter enzyme, E. coli β-glucuronidase fused to the type 1 dockerin motif of the cellulosomal enzyme CelS. Surface-anchored complexes exhibited dual enzyme activities (nuclease and β-glucuronidase), and were displayed with efficiencies approaching 104 complexes/cell. CONCLUSIONS We report the successful display of cellulosome-inspired recombinant complexes on the surface of Lactococcus lactis. Significant differences in display efficiency among constructs were observed and attributed to their structural characteristics including protein conformation and solubility, scaffold size, and the inclusion and exclusion of non-cohesin modules. The surface-display of functional scaffold proteins described here represents a key step in the development of recombinant microorganisms capable of carrying out a variety of metabolic processes including the direct conversion of cellulosic substrates into fuels and chemicals.
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Affiliation(s)
- Andrew S Wieczorek
- Department of Biology, Concordia University, Montréal, Québec, H4B 1R6, Canada
| | - Vincent JJ Martin
- Department of Biology, Concordia University, Montréal, Québec, H4B 1R6, Canada
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56
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Characterization of a novel LysM domain from Lactobacillus fermentum bacteriophage endolysin and its use as an anchor to display heterologous proteins on the surfaces of lactic acid bacteria. Appl Environ Microbiol 2010; 76:2410-8. [PMID: 20173067 DOI: 10.1128/aem.01752-09] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The endolysin Lyb5, from Lactobacillus fermentum temperate bacteriophage phiPYB5, showed a broad lytic spectrum against Gram-positive as well as Gram-negative bacteria. Sequence analysis revealed that the C terminus of the endolysin Lyb5 (Ly5C) contained three putative lysin motif (LysM) repeat regions, implying that Ly5C was involved in bacterial cell wall binding. To investigate the potential of Ly5C for surface display, green fluorescent protein (GFP) was fused to Ly5C at its N or C terminus and the resulting fusion proteins were expressed in Escherichia coli. After being mixed with various cells in vitro, GFP was successfully displayed on the surfaces of Lactococcus lactis, Lactobacillus casei, Lb. brevis, Lb. plantarum, Lb. fermentum, Lb. delbrueckii, Lb. helveticus, and Streptococcus thermophilus cells. Increases in the fluorescence intensities of chemically pretreated L. lactis and Lb. casei cells compared to those of nonpretreated cells suggested that the peptidoglycan was the binding ligand for Ly5C. Moreover, the pH and concentration of sodium chloride were optimized to enhance the binding capacity of GFP-Ly5C, and high-intensity fluorescence of cells was observed under optimal conditions. All results suggested that Ly5C was a novel anchor for constructing a surface display system for lactic acid bacteria (LAB). To demonstrate the applicability of the Ly5C-mediated surface display system, beta-galactosidase (beta-Gal) from Paenibacillus sp. strain K1, replacing GFP, was functionally displayed on the surfaces of LAB cells via Ly5C. The success in surface display of GFP and beta-Gal opened up the feasibility of employing the cell wall anchor of bacteriophage endolysin for surface display in LAB.
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57
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Bermúdez-Humarán LG, Langella P. Utilisation des bactéries lactiques comme vecteurs vaccinaux. REVUE FRANCOPHONE DES LABORATOIRES 2009; 2009:79-89. [PMID: 32518601 PMCID: PMC7270964 DOI: 10.1016/s1773-035x(09)70312-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 09/17/2009] [Accepted: 10/12/2009] [Indexed: 11/26/2022]
Abstract
Aujourd’hui, nous disposons de données suffisantes qui confortent l’intérêt d’utiliser des bactéries lactiques (BL), notamment des souches des lactocoques et lactobacilles, pour le développement de nouvelles stratégies de vaccination mucosale. Les BL sont des bactéries à Gram positif utilisées depuis des millénaires dans la production d’aliments fermentés. Elles sont donc de bonnes candidates pour le développement de nouvelles stratégies de vectorisation orale et constituent des alternatives attractives aux stratégies vaccinales basées sur des bactéries pathogènes atténuées dont l’utilisation présente des risques sanitaires. Ce chapitre passe en revue la recherche et les progrès les plus récents dans l’utilisation des BL comme vecteurs de délivrance de protéines d’intérêt médical pour développer de nouveaux vaccins.
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58
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Prasad SB, Jayaraman G, Ramachandran KB. Hyaluronic acid production is enhanced by the additional co-expression of UDP-glucose pyrophosphorylase in Lactococcus lactis. Appl Microbiol Biotechnol 2009; 86:273-83. [DOI: 10.1007/s00253-009-2293-0] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2009] [Revised: 10/01/2009] [Accepted: 10/03/2009] [Indexed: 11/29/2022]
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59
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Kim SJ, Lee JY, Jun DY, Song JY, Lee WK, Cho MJ, Kim YH. Oral administration of Lactococcus lactis expressing Helicobacter pylori Cag7-ct383 protein induces systemic anti-Cag7 immune response in mice. ACTA ACUST UNITED AC 2009; 57:257-68. [PMID: 19807786 PMCID: PMC7110310 DOI: 10.1111/j.1574-695x.2009.00605.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
To express the 3′‐region (1152 bp) of the cag7 gene of Helicobacter pylori 51 strain, encoding the C‐terminal 383 amino acid (ct383 aa) region of Cag7 protein that is known to cover the needle region of T4SS, in a live delivery vehicle Lactococcus lactis, the cag7‐ct383 gene was amplified by PCR. DNA sequence analysis revealed that the amino acid sequence of Cag7‐ct383 of H. pylori 51 shared 98.4% and 97.4% identity with H. pylori 26695 and J99, respectively. Intramuscular injection of the GST‐Cag7‐ct383 fusion protein into a rat could raise the anti‐Cag7 antibody, indicating the immunogenicity of the Cag7‐ct383 protein. When the cag7‐ct383 gene was cloned in Escherichia coli–L. lactis shuttle vector (pMG36e) and transformed into L. lactis, the transformant could produce the Cag7‐ct383 protein, as evidenced by Western blot analysis. The Cag7‐ct383 protein level in the L. lactis transformant reached a maximum at the early stationary phase without extracellular secretion. The oral administration of the L. lactis transformant into mice generated anti‐Cag7 antibody in serum in five of five mice. These results suggest that L. lactis transformant expressing Cag7‐ct383 protein may be applicable as an oral vaccine to induce mucosal and systemic immunity to H. pylori.
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Affiliation(s)
- Su-Jung Kim
- School of Life Sciences and Biotechnology, College of Natural Sciences, Kyungpook National University, Daegu, Korea
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60
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Beck HC, Madsen SÃM, Glenting J, Petersen JÃ, Israelsen H, Nørrelykke MR, Antonsson M, Hansen AM. Proteomic analysis of cell surface-associated proteins from probioticLactobacillus plantarum. FEMS Microbiol Lett 2009; 297:61-6. [DOI: 10.1111/j.1574-6968.2009.01662.x] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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61
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Gu Q, Song D, Zhu M. Oral vaccination of mice against Helicobacter pylori with recombinant Lactococcus lactis expressing urease subunit B. FEMS IMMUNOLOGY AND MEDICAL MICROBIOLOGY 2009. [PMID: 19453750 DOI: 10.111/j.1574-695x.2009.00566.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
To determine whether a protective immune response could be elicited by oral delivery of a recombinant live bacterial vaccine, Helicobacter pylori urease subunit B (UreB) was expressed for extracellular expression in food-grade bacterium Lactococcus lactis. The UreB-producing strains were then administered orally to mice, and the immune response to UreB was examined. Orally vaccinated mice produced a significant UreB-specific serum immunoglobulin G (IgG) response. Specific anti-UreB IgA responses could be detected in the feces of mice immunized with the secreting lactococcal strain. Mice vaccinated orally were significantly protected against gastric Helicobacter infection following a challenge with H. pylori strain SS1. In conclusion, mucosal vaccination with L. lactis expressing UreB produced serum IgG and UreB-specific fecal IgA, and prevented gastric infection with H. pylori.
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Affiliation(s)
- Qing Gu
- Department of Biotechnology, Zhejiang Gongshang University, Hangzhou 310035, China.
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62
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Gu Q, Song D, Zhu M. Oral vaccination of mice against Helicobacter pylori with recombinant Lactococcus lactis expressing urease subunit B. ACTA ACUST UNITED AC 2009; 56:197-203. [PMID: 19453750 PMCID: PMC7110364 DOI: 10.1111/j.1574-695x.2009.00566.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
To determine whether a protective immune response could be elicited by oral delivery of a recombinant live bacterial vaccine, Helicobacter pylori urease subunit B (UreB) was expressed for extracellular expression in food-grade bacterium Lactococcus lactis. The UreB-producing strains were then administered orally to mice, and the immune response to UreB was examined. Orally vaccinated mice produced a significant UreB-specific serum immunoglobulin G (IgG) response. Specific anti-UreB IgA responses could be detected in the feces of mice immunized with the secreting lactococcal strain. Mice vaccinated orally were significantly protected against gastric Helicobacter infection following a challenge with H. pylori strain SS1. In conclusion, mucosal vaccination with L. lactis expressing UreB produced serum IgG and UreB-specific fecal IgA, and prevented gastric infection with H. pylori.
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Affiliation(s)
- Qing Gu
- Department of Biotechnology, Zhejiang Gongshang University, Hangzhou 310035, China.
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63
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Hu CX, Xu ZR, Li WF, Dong N, Lu P, Fu LL. Secretory expression of K88 (F4) fimbrial adhesin FaeG by recombinant Lactococcus lactis for oral vaccination and its protective immune response in mice. Biotechnol Lett 2009; 31:991-7. [DOI: 10.1007/s10529-009-9966-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2008] [Revised: 02/13/2009] [Accepted: 02/17/2009] [Indexed: 12/01/2022]
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64
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Hu S, Kong J, Kong W, Ji M. Identification of Nisin-Producing Strains by Nisin-Controlled Gene Expression System. Curr Microbiol 2009; 58:604-8. [DOI: 10.1007/s00284-009-9378-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2008] [Revised: 01/07/2009] [Accepted: 01/27/2009] [Indexed: 10/21/2022]
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65
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Zhang XJ, Duan G, Zhang R, Fan Q. Optimized Expression of Helicobacter pylori ureB Gene in the Lactococcus lactis Nisin-Controlled Gene Expression (NICE) System and Experimental Study of Its Immunoreactivity. Curr Microbiol 2009; 58:308-14. [DOI: 10.1007/s00284-008-9349-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2008] [Revised: 11/07/2008] [Accepted: 12/08/2008] [Indexed: 12/18/2022]
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66
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Charalampopoulos D, Rastall RA. Development of Mucosal Vaccines Based on Lactic Acid Bacteria. PREBIOTICS AND PROBIOTICS SCIENCE AND TECHNOLOGY 2009. [PMCID: PMC7121035 DOI: 10.1007/978-0-387-79058-9_29] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Today, sufficient data are available to support the use of lactic acid bacteria (LAB), notably lactococci and lactobacilli, as delivery vehicles for the development of new mucosal vaccines. These non-pathogenic Gram-positive bacteria have been safely consumed by humans for centuries in fermented foods. They thus constitute an attractive alternative to the attenuated pathogens (most popular live vectors actually studied) which could recover their pathogenic potential and are thus not totally safe for use in humans. This chapter reviews the current research and advances in the use of LAB as live delivery vectors of proteins of interest for the development of new safe mucosal vaccines. The use of LAB as DNA vaccine vehicles to deliver DNA directly to antigen-presenting cells of the immune system is also discussed.
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Affiliation(s)
| | - Robert A. Rastall
- Department of Food Biosciences, University of Reading Whiteknights, Reading, UK
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67
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Pontes DS, Dorella FA, Ribeiro LA, Miyoshi A, Le Loir Y, Gruss A, Oliveira SC, Langella P, Azevedo V. Induction of Partial Protection in Mice after Oral Administration ofLactococcus lactisProducingBrucella abortusL7/L12 Antigen. J Drug Target 2008; 11:489-93. [PMID: 15203917 DOI: 10.1080/10611860410001670035] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
The Brucella abortus ribosomal protein L7/L12 is an immunodominant antigen and an interesting candidate for the development of oral live vaccines against brucellosis. Here, a recombinant Lactococcus lactis strain producing L7/L12 under the control of nisin inducible promoter was orally administered to BALB/c mice. Significant levels of anti-L7/L12 specific IgA detected in feces revealed an induced local humoral immune response. However, serum analysis did not reveal any anti-L7/L12 antibodies suggesting the absence of a systemic response. Nevertheless, the vaccinated mice showed a partial protective immunity against B. abortus virulent strain (S2308) challenged by intraperitoneal inoculation.
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Affiliation(s)
- Daniela S Pontes
- Department of General Biology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Brazil
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68
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Expression of the capsid protein of porcine circovirus type 2 in Lactococcus lactis for oral vaccination. J Virol Methods 2008; 150:1-6. [DOI: 10.1016/j.jviromet.2008.02.014] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2007] [Revised: 02/11/2008] [Accepted: 02/25/2008] [Indexed: 11/19/2022]
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69
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Yam KK, Pouliot P, N’diaye MM, Fournier S, Olivier M, Cousineau B. Innate inflammatory responses to the Gram-positive bacterium Lactococcus lactis. Vaccine 2008; 26:2689-99. [DOI: 10.1016/j.vaccine.2008.03.024] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2008] [Revised: 03/13/2008] [Accepted: 03/13/2008] [Indexed: 12/24/2022]
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70
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Bohaychuk VM, van Belkum MJ, Stiles ME, McMullen LM. Effect of low temperature on stability of θ-type plasmids inCarnobacterium maltaromaticum. FEMS Microbiol Lett 2008; 280:14-20. [DOI: 10.1111/j.1574-6968.2007.01026.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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71
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Kim TW, Igimi S, Kajikawa A, Kim HY. Display of heterologous proteins on the surface of Lactococcus lactis using the H and W domain of PrtB from Lactobacillus delburueckii subsp. bulgaricus as an anchoring matrix. J Appl Microbiol 2008; 104:1636-43. [PMID: 18298534 DOI: 10.1111/j.1365-2672.2007.03690.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
AIMS The aim of this study was to develop a cell-surface display system for foreign antigens on the surface of a Lactococcus lactis strain using an H and W domain of PrtB from Lactobacillus delburueckii subsp. bulgaricus as an anchoring matrix. METHODS AND RESULTS To construct a cell-surface display pACL1 vector, a derivative of pSECE1 vector, we amplified the H and W domain of the cell-surface proteinase Prt B from Lact. bulgaricus using specific primers and then cloned it into a site downstream of the secretion signal sequence in the pSECE1 vector. The new system, designed for cell-surface display of recombinant proteins on L. lactis, was evaluated by the expression and display of the FliC protein of Salmonella enterica serovar Enteritidis as a reporter gene (pALC1:FliC). The expression of the FliC protein by the transformed cells was analysed by Western blot analysis, and the localization of FliC on the cell surface was confirmed by immunofluorescence microscopy and flow cytometry analysis. A specific band corresponding in size (approx. 110 kDa) to FliC plus the anchor residues was detected by anti-FliC antibody in the cell extract of L. lactis H61 harbouring pALC1:FliC, but not L. lactis H61 harbouring pALC1. In addition, flow cytometry and immunofluorescence microscopy revealed FliC-specific positive signals and a significant increase of fluorescence, respectively, in cells harbouring pALC1:FliC compared with that in control cells harbouring the parental pALC1 plasmid. These findings demonstrated that FliC was successfully displayed on the cell surface by the anchor domain of PrtB. CONCLUSIONS A pALC1 vector using the H and W domain of PrtB from Lact. bulgaricus as an anchoring matrix can be used to successfully display the FliC protein on the surface of L. lactis. SIGNIFICANCE AND IMPACT OF THE STUDY This novel way of displaying heterologous proteins on the cell surface of L. lactis using the PrtB anchor domain should prove useful for the delivery of antigens and other proteins.
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Affiliation(s)
- T W Kim
- Institute of Life Sciences & Resources, Graduate School of Biotechnology, Kyung Hee University, Yongin, Korea
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72
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Sim ACN, Lin W, Tan GKX, Sim MST, Chow VTK, Alonso S. Induction of neutralizing antibodies against dengue virus type 2 upon mucosal administration of a recombinant Lactococcus lactis strain expressing envelope domain III antigen. Vaccine 2008; 26:1145-54. [PMID: 18243432 DOI: 10.1016/j.vaccine.2007.12.047] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2007] [Revised: 12/04/2007] [Accepted: 12/28/2007] [Indexed: 01/12/2023]
Abstract
Mucosal vaccines present several advantages over conventional parenteral vaccines including their ease of administration and low cost, both criteria being priorities for developing countries plagued by infectious diseases. A recombinant Lactococcus lactis strain producing the envelope domain III (EDIII) antigen from dengue virus serotype 2 was engineered, and the ability of the live recombinant bacteria to trigger a systemic anti-EDIII IgG antibody response upon nasal or oral administration to BALB/c and C57BL/6 mice was investigated. Results showed that the antibody response depended on the route of administration and on the mouse strain inoculated. Out of six, two and three C57BL/6 mice orally and nasally inoculated with the recombinant bacteria, respectively, displayed anti-EDIII antibody responses higher than that obtained in the mouse group intraperitoneally (i.p.) immunized with heat-inactivated dengue 2 virus. The protective potential of the immune sera was measured using the plaque reduction neutralizing test (PRNT) and results indicated that high anti-EDIII antibody levels did not correlate directly with high neutralizing activities. Immune sera from orally inoculated mice were found the most potent to neutralize in vitro dengue infection with neutralizing antibody activities in some cases higher than that obtained with the immune sera from mice i.p. injected with heat-inactivated virus.
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Affiliation(s)
- Adrian C N Sim
- Immunology Programme, Department of Microbiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
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73
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Crump EM, Burian J, Allen PD, Gale S, Kay WW. Identification of a Ribosomal L10-Like Protein from Flavobacterium psychrophilum as a Recombinant Vaccine Candidate for Rainbow Trout Fry Syndrome. J Mol Microbiol Biotechnol 2007; 13:55-64. [PMID: 17693713 DOI: 10.1159/000103597] [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: 11/19/2022] Open
Abstract
The psychrophilic bacterium Flavobacterium psychrophilum is a rapidly emerging, virulent pathogen of a variety of commercially important finfish species, including salmonids. No vaccines against F. psychrophilum are currently available, partly due to its recalcitrant growth in vitro. Consequently, we explored the possibility of constructing recombinant vaccines in Escherichia coli as a prophylactic biotechnological strategy to counter F. psychrophilum infections. An immunoreactive clone from a F. psychrophilum expression library was found to express a approximately 16 kDa protein antigen. A proteomics approach was taken to identify the ORF encoding the approximately 16 kDa protein. Tryptic fragments of the approximately 16 kDa protein were analyzed by MALDI-TOF mass spectrometry and compared to theoretical (in silico) tryptic fragments of translated ORFs predicted within the cloned DNA. The target protein was identified as a 166 amino acid protein (named 7-166) with homology to rplJ which encodes bacterial ribosomal protein L10. Whenhighly expressed in E. coli as an N-terminal fusion protein, this chimera reacted with convalescent rainbow trout serum. When adjuvanted and administered intraperitoneally to immature rainbow trout a high level of protection (82% RPS) was afforded against virulent F. psychrophilum challenge; thus establishing F. psychrophilumrplJ homologue 7-166 as a promising vaccine candidate for RTFS.
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Affiliation(s)
- Elizabeth M Crump
- Department of Biochemistry and Microbiology, University of Victoria, Victoria, B.C., Canada
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74
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Guimarães VD, Innocentin S, Lefèvre F, Azevedo V, Wal JM, Langella P, Chatel JM. Use of native lactococci as vehicles for delivery of DNA into mammalian epithelial cells. Appl Environ Microbiol 2006; 72:7091-7. [PMID: 16963550 PMCID: PMC1636207 DOI: 10.1128/aem.01325-06] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
The use of the food-grade bacterium Lactococcus lactis as a DNA delivery vehicle at the mucosal level is an attractive DNA vaccination strategy. Previous experiments showed that recombinant L. lactis expressing the Listeria monocytogenes inlA gene can deliver a functional gene into mammalian cells. Here, we explored the potential use of noninvasive L. lactis strains as a DNA delivery vehicle. We constructed two Escherichia coli-L. lactis shuttle plasmids, pLIG:BLG1 and pLIG:BLG2, containing a eukaryotic expression cassette with the cDNA of bovine beta-lactoglobulin (BLG). The greatest BLG expression after transfection of Cos-7 cells was obtained with pLIG:BLG1, which was then used to transform L. lactis MG1363. The resulting L. lactis strain MG1363(pLIG:BLG1) was not able to express BLG. The potential of L. lactis as a DNA delivery vehicle was analyzed by detection of BLG in Caco-2 human colon carcinoma cells after 3 h of coincubation with (i) purified pLIG:BLG1, (ii) MG1363(pLIG:BLG1), (iii) a mix of MG1363(pLIG) and purified pLIG:BLG1, and (iv) MG1363. Both BLG cDNA and BLG expression were detected only in Caco-2 cells coincubated with MG1363(pLIG:BLG1). There was a decrease in the BLG cDNA level in Caco-2 cells between 24 and 48 h after coincubation. BLG expression by Caco-2 cells started at 24 h and increased between 24 and 72 h. BLG secretion by Caco-2 cells started 48 h after coincubation with MG1363(pLIG:BLG1). We conclude that lactococci can deliver BLG cDNA into mammalian epithelial cells, demonstrating their potential to deliver in vivo a DNA vaccine.
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75
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Lee P, Faubert GM. Expression of the Giardia lamblia cyst wall protein 2 in Lactococcus lactis. MICROBIOLOGY-SGM 2006; 152:1981-1990. [PMID: 16804173 DOI: 10.1099/mic.0.28877-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
In this study, Lactococcus lactis was engineered to express Giardia lamblia cyst wall protein 2 (CWP2) at three different subcellular locations, intracellular, secreted or cell-surface-anchored, using nisin as an inducing agent. CWP2 expression did not appear to be detrimental to L. lactis viability. No particular subcellular location of CWP2 expression offered any advantages over the others with respect to decreased toxicity towards the bacteria. All recombinant lactococci experienced a similar reduction in growth rate when induced. It was determined whether recombinant lactococcal cells engineered for cell surface expression of CWP2 were capable of inducing a CWP2-specific mucosal IgA antibody response. Recombinant lactococci were successful at inducing CWP2-specific IgA antibodies. Moreover, in a pilot challenge experiment, mice immunized with these recombinant lactococci demonstrated a significant (63 %) reduction in cyst output. Thus, it has been demonstrated that G. lamblia CWP2 may be expressed in L. lactis and that recombinant lactococcal cells elicit Giardia-specific antibodies which reduce cyst shedding in a murine model.
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Affiliation(s)
- Peter Lee
- Institute of Parasitology, McGill University, Macdonald Campus, 21 111 Lakeshore Rd, Ste-Anne de Bellevue, Québec H9X 3V9, Canada
| | - Gaétan M Faubert
- Institute of Parasitology, McGill University, Macdonald Campus, 21 111 Lakeshore Rd, Ste-Anne de Bellevue, Québec H9X 3V9, Canada
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76
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Nouaille S, Morello E, Cortez-Peres N, Le Loir Y, Commissaire J, Gratadoux JJ, Poumerol E, Gruss A, Langella P. Complementation of the Lactococcus lactis secretion machinery with Bacillus subtilis SecDF improves secretion of staphylococcal nuclease. Appl Environ Microbiol 2006; 72:2272-9. [PMID: 16517687 PMCID: PMC1393182 DOI: 10.1128/aem.72.3.2272-2279.2006] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Unlike Bacillus subtilis and Escherichia coli, the gram-positive lactic acid bacterium Lactococcus lactis does not possess the SecDF protein, a component of the secretion (Sec) machinery involved in late secretion stages and required for the high-capacity protein secretion in B. subtilis. In this study, we complemented the L. lactis Sec machinery with SecDF from B. subtilis and evaluated the effect on the secretion of two forms of staphylococcal nuclease, NucB and NucT, which are efficiently and poorly secreted, respectively. The B. subtilis SecDF-encoding gene was tested in L. lactis at different levels. Increased quantities of the precursor and mature forms were observed only at low levels of SecDF and at high NucT production levels. This SecDF secretion enhancement was observed at the optimal growth temperature (30 degrees C) and was even greater at 15 degrees C. Furthermore, the introduction of B. subtilis SecDF into L. lactis was shown to have a positive effect on a secreted form of Brucella abortus L7/L12 antigen.
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Affiliation(s)
- S Nouaille
- Unité de Recherches Laitières et de Génétique Appliquée, Institut National de la Recherche Agronomique, Domaine de Vilvert, 78352 Jouy en Josas Cedex, France
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77
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Luo D, Ni B, Li P, Shi W, Zhang S, Han Y, Mao L, He Y, Wu Y, Wang X. Protective immunity elicited by a divalent DNA vaccine encoding both the L7/L12 and Omp16 genes of Brucella abortus in BALB/c mice. Infect Immun 2006; 74:2734-41. [PMID: 16622210 PMCID: PMC1459688 DOI: 10.1128/iai.74.5.2734-2741.2006] [Citation(s) in RCA: 83] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
This study was designed to evaluate the immunogenicity and the protective efficacy of a divalent fusion DNA vaccine encoding both the Brucella abortus L7/L12 protein (ribosomal protein) and Omp16 protein (outer membrane lipoprotein), designated pcDNA3.1-L7/L12-Omp16. Intramuscular injection of this divalent DNA vaccine into BALB/c mice elicited markedly both humoral and cellular immune responses. The specific antibodies exhibited a dominance of immunoglobulin G2a (IgG2a) over IgG1. In addition, the dual-gene DNA vaccine elicited a strong T-cell proliferative response and induced a large amount of gamma interferon-producing T cells upon restimulation in vitro with recombinant fusion protein L7/L12-Omp16, suggesting the induction of a typical T-helper-1-dominated immune response in vivo. This divalent DNA vaccine could also induce a significant level of protection against challenge with the virulent strain B. abortus 544 in BALB/c mice. Furthermore, the protection level induced by the divalent DNA vaccine was significantly higher than that induced by the univalent DNA vaccines pcDNA3.1-L7/L12 or pcDNA3.1-Omp16. Taken together, the results of this study verify for the first time that the Omp16 gene can be a candidate target for a DNA vaccine against brucellosis. Additionally, a divalent genetic vaccine based on the L7/L12 and Omp16 genes can elicit a stronger cellular immune response and better immunoprotection than the relevant univalent vaccines can.
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Affiliation(s)
- Deyan Luo
- State Key Laboratory of Pathogen and Biosecurity, Institute of Microbiology and Epidemiology, Academy of Military Medical Science, Beijing, China
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78
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Zhou XX, Li WF, Ma GX, Pan YJ. The nisin-controlled gene expression system: Construction, application and improvements. Biotechnol Adv 2006; 24:285-95. [PMID: 16380225 DOI: 10.1016/j.biotechadv.2005.11.001] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2005] [Revised: 10/26/2005] [Accepted: 11/03/2005] [Indexed: 10/25/2022]
Abstract
Lactic acid bacteria are widely used in industrial fermentation. The potential use of these bacteria as homologous and heterologous protein expression hosts has been investigated extensively. The NIsin-Controlled gene Expression system (the NICE system) is an efficient and promising gene expression system based on the autoregulation mechanism of nisin biosynthesis in the Lactococcus lactis. In the NICE system, the membrane-located histidine kinase NisK senses the inducing signal nisin and autophosphorylates, then transfers phosphorous group to intracellular response regulator protein NisR which activates nisA promoter to express the downstream gene(s). The NICE system allows regulated overproduction of a variety of interest proteins by several Gram-positive bacteria, especially L. lactis. The essential elements for system construction, its application for expression of some biotechnologically important proteins and further improvements of this system are discussed.
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Affiliation(s)
- Xu Xia Zhou
- Department of Chemistry, Zhejiang University, the Laboratory of Natural and BioChemistry, Hangzhou, 310027, China
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79
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Kim SJ, Jun DY, Yang CH, Kim YH. Expression of Helicobacter pylori cag12 gene in Lactococcus lactis MG1363 and its oral administration to induce systemic anti-Cag12 immune response in mice. Appl Microbiol Biotechnol 2006; 72:462-70. [PMID: 16586107 PMCID: PMC7079898 DOI: 10.1007/s00253-005-0285-2] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2005] [Revised: 11/28/2005] [Accepted: 12/01/2005] [Indexed: 12/29/2022]
Abstract
To develop an oral vaccine against Helicobacter pylori infection, we have expressed the H. pyloricag12 (HP0532) gene, encoding the outer membrane protein Cag12 (31 kDa), in a live delivery vehicle Lactococcus lactis. The cag12 gene was amplified by polymerase chain reaction (PCR) using the genomic DNA of H. pylori K51 isolated from Korean patients. DNA sequence analysis revealed that the cag12 gene of H. pylori K51 has 98.1 and 97.4% identity with individual cag12 genes of the H. pylori 26695 and J99, respectively. The GST–Cag12 fusion protein, produced using the Escherichia coli expression system, was used to raise a rat polyclonal anti-Cag12 antibody. The PCR-amplified cag12 gene of H. pylori K51 was cloned in the E. coli–L. lactis shuttle vector (pMG36e) and transformed into L. lactis. Western blot analysis demonstrated that the Cag12 protein was expressed in the L. lactis transformant, with a maximum level at the log phase without extracelluar secretion. The oral administration of the transformant into mice resulted in the generation of the anti-Cag12 antibody in serum in two out of five cases. These results suggest that the recombinant L. lactis, which expresses Cag12, may be applicable as an oral vaccine to induce protective immunity against H. pylori.
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Affiliation(s)
- Su-Jung Kim
- Laboratory of Immunobiology, Department of Microbiology, College of Natural Sciences, Kyungpook National University, Daegu, 702-701 South Korea
- Department of Clinical Pathology, Daegu Health College, Daegu, 702-722 South Korea
| | - Do Youn Jun
- Laboratory of Immunobiology, Department of Microbiology, College of Natural Sciences, Kyungpook National University, Daegu, 702-701 South Korea
- Institute of Genetic Engineering, Kyungpook National University, Daegu, South Korea
| | - Chae Ha Yang
- Department of Oriental Medicine, College of Oriental Medicine, Daegu Haany University, Daegu, 706-060 South Korea
| | - Young Ho Kim
- Laboratory of Immunobiology, Department of Microbiology, College of Natural Sciences, Kyungpook National University, Daegu, 702-701 South Korea
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80
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Sriraman K, Jayaraman G. Enhancement of recombinant streptokinase production in Lactococcus lactis by suppression of acid tolerance response. Appl Microbiol Biotechnol 2006; 72:1202-9. [PMID: 16583227 DOI: 10.1007/s00253-006-0410-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2006] [Revised: 03/03/2006] [Accepted: 03/05/2006] [Indexed: 10/24/2022]
Abstract
Lactococcus lactis is a potential host for production of recombinant proteins, especially of therapeutic importance. However, in glucose-grown cultures, lowering of pH due to accumulation of lactic acid and the concomitant induction of acid tolerance response (ATR) may affect the recombinant protein produced. In this work, we have analyzed the effect of culture pH and the associated ATR on production of recombinant streptokinase. Streptokinase gene was cloned and expressed as a secretory protein in L. lactis under the control of P170 promoter. It was found to undergo degradation to form inactive products leading to low productivity. The extent of degradation and productivity of streptokinase was greatly influenced by the development of ATR, which was dependent on the pH of the culture and initial phosphate concentration of the medium. It was found that high pH and high initial phosphate concentration leads to suppression of ATR and this results in at least 2.5-fold increase in streptokinase productivity and significant decrease in degradation of streptokinase.
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Affiliation(s)
- Kalpana Sriraman
- Department of Biotechnology, Indian Institute of Technology-Madras, Chennai 600036, India
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81
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Miyoshi A, Bermúdez-Humarán LG, Ribeiro LA, Le Loir Y, Oliveira SC, Langella P, Azevedo V. Heterologous expression of Brucella abortus GroEL heat-shock protein in Lactococcus lactis. Microb Cell Fact 2006; 5:14. [PMID: 16556312 PMCID: PMC1444932 DOI: 10.1186/1475-2859-5-14] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2005] [Accepted: 03/23/2006] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Brucella abortus is a facultative intracellular pathogen that mainly infects cattle and humans. Current vaccines rely on live attenuated strains of B. abortus, which can revert to their pathogenic status and thus are not totally safe for use in humans. Therefore, the development of mucosal live vaccines using the food-grade lactic acid bacterium, Lactococcus lactis, as an antigen delivery vector, is an attractive alternative and a safer vaccination strategy against B. abortus. Here, we report the construction of L. lactis strains genetically modified to produce B. abortus GroEL heat-shock protein, a candidate antigen, in two cellular locations, intracellular or secreted. RESULTS Only the secreted form of GroEL was stably produced in L. lactis, suggesting a detrimental effect of GroEL protein when intracellularly produced in this bacterium. Only trace amounts of mature GroEL were detected in the supernatant fraction of induced lactococcal cultures, and the GroEL precursor remained stacked in the cell fraction. Attempts to raise the secretion yields were made, but even when GroEL was fused to a synthetic propeptide, secretion of this antigen was not improved. CONCLUSION We found that L. lactis is able to produce, and to secrete, a stable form of GroEL into the extracellular medium. Despite the low secretion efficiency of GroEL, which suggest that this antigen interacts with the cell envelope of L. lactis, secretion seems to be the best way to achieve both production and protein yields, regardless of cellular location. The L. lactis strain secreting GroEL has potential for in vivo immunization.
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Affiliation(s)
- Anderson Miyoshi
- Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte – MG, Brasil
| | - Luis G Bermúdez-Humarán
- Unité d'Ecologie et Physiologie du Sistème Digestif, Institut National de la Recherche Agronomique, Jouy en Josas Cedex, France
| | - Luciana A Ribeiro
- Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte – MG, Brasil
| | - Yves Le Loir
- Laboratoire de Microbiologie, Institut National de la Recherche Agronomique, Rennes Cedex, France
| | - Sérgio C Oliveira
- Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte – MG, Brasil
| | - Philippe Langella
- Unité d'Ecologie et Physiologie du Sistème Digestif, Institut National de la Recherche Agronomique, Jouy en Josas Cedex, France
| | - Vasco Azevedo
- Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte – MG, Brasil
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82
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Perez CA, Eichwald C, Burrone O, Mendoza D. Rotavirus vp7 antigen produced by Lactococcus lactis induces neutralizing antibodies in mice. J Appl Microbiol 2006; 99:1158-64. [PMID: 16238746 DOI: 10.1111/j.1365-2672.2005.02709.x] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
AIMS To determine if live recombinant Lactococcus lactis strains expressing rotavirus VP7 antigen are immunogenic in mice. METHODS AND RESULTS Using the food-grade lactic acid bacterium L. lactis as a carrier, we expressed VP7, the major rotavirus outer shell protein and one of the main components of the infective particle, as a cytoplasmic, secreted or cell wall anchored forms. Our results showed that recombinant L. lactis strains secreting VP7 proved to be more immunogenic than strains containing the antigen in the cytoplasm or anchored to the cell wall. CONCLUSIONS This is the first demonstration that recombinant L. lactis producing VP7 can induce the production of a neutralizing antibody response against rotavirus by the intragastric route. SIGNIFICANCE AND IMPACT OF THE STUDY Rotaviruses are the single most important aetiological agents of severe diarrhoea of infants and young children worldwide and have been estimated to be responsible for 650 000-800 000 deaths per year of children younger than 5 years old in development countries. Thus, the development of a safe and effective vaccine has been a global public health goal. Although two of five mice orally inoculated with L. lactis strains secreting VP7 elicited a specific-antibody response, these strains could be very useful to be used as a prototype to develop a new generation of protective rotavirus vaccines.
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Affiliation(s)
- C A Perez
- Instituto de Biología Molecular y Celular de Rosario (IBR) and Departamento de Microbiología, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha, Rosario, Argentina
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83
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Oliveira MLS, Arêas APM, Campos IB, Monedero V, Perez-Martínez G, Miyaji EN, Leite LCC, Aires KA, Lee Ho P. Induction of systemic and mucosal immune response and decrease in Streptococcus pneumoniae colonization by nasal inoculation of mice with recombinant lactic acid bacteria expressing pneumococcal surface antigen A. Microbes Infect 2006; 8:1016-24. [PMID: 16549380 PMCID: PMC7110601 DOI: 10.1016/j.micinf.2005.10.020] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2005] [Revised: 10/20/2005] [Accepted: 10/23/2005] [Indexed: 11/15/2022]
Abstract
Mucosal epithelia constitute the first barriers to be overcome by pathogens during infection. The induction of protective IgA in this location is important for the prevention of infection and can be achieved through different mucosal immunization strategies. Lactic acid bacteria have been tested in the last few years as live vectors for the delivery of antigens at mucosal sites, with promising results. In this work, Streptococcus pneumoniae PsaA antigen was expressed in different species of lactic acid bacteria, such as Lactococcus lactis, Lactobacillus casei, Lactobacillus plantarum, and Lactobacillus helveticus. After nasal inoculation of C57Bl/6 mice, their ability to induce both systemic (IgG in serum) and mucosal (IgA in saliva, nasal and bronchial washes) anti-PsaA antibodies was determined. Immunization with L. lactis MG1363 induced very low levels of IgA and IgG, possibly by the low amount of PsaA expressed in this strain and its short persistence in the nasal mucosa. All three lactobacilli persisted in the nasal mucosa for 3 days and produced a similar amount of PsaA protein (150–250 ng per 109 CFU). However, L. plantarum NCDO1193 and L. helveticus ATCC15009 elicited the highest antibody response (IgA and IgG). Vaccination with recombinant lactobacilli but not with recombinant L. lactis led to a decrease in S. pneumoniae recovery from nasal mucosa upon a colonization challenge. Our results confirm that certain Lactobacillus strains have intrinsic properties that make them suitable candidates for mucosal vaccination experiments.
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84
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Mierau I, Kleerebezem M. 10 years of the nisin-controlled gene expression system (NICE) in Lactococcus lactis. Appl Microbiol Biotechnol 2005; 68:705-17. [PMID: 16088349 DOI: 10.1007/s00253-005-0107-6] [Citation(s) in RCA: 417] [Impact Index Per Article: 21.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2005] [Revised: 07/13/2005] [Accepted: 07/17/2005] [Indexed: 10/25/2022]
Abstract
Lactococcus lactis is a Gram-positive lactic acid bacterium that, in addition to its traditional use in food fermentations, is increasingly used in modern biotechnological applications. In the last 25 years great progress has been made in the development of genetic engineering tools and the molecular characterization of this species. A new versatile and tightly controlled gene expression system, based on the auto-regulation mechanism of the bacteriocin nisin, was developed 10 years ago-the NIsin Controlled gene Expression system, called NICE. This system has become one of the most successful and widely used tools for regulated gene expression in Gram-positive bacteria. The review describes, after a brief introduction of the host bacterium L. lactis, the fundaments, components and function of the NICE system. Furthermore, an extensive overview is provided of the different applications in lactococci and other Gram-positive bacteria: (1) over-expression of homologous and heterologous genes for functional studies and to obtain large quantities of specific gene products, (2) metabolic engineering, (3) expression of prokaryotic and eukaryotic membrane proteins, (4) protein secretion and anchoring in the cell envelope, (5) expression of genes with toxic products and analysis of essential genes and (6) large-scale applications. Finally, an overview is given of growth and induction conditions for lab-scale and industrial-scale applications.
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Affiliation(s)
- Igor Mierau
- NIZO food research, P.O. Box 20, 6710, Ede, The Netherlands.
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85
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Jeong DW, Lee JH, Kim KH, Lee HJ. A food-grade expression/secretion vector for Lactococcus lactis that uses an alpha-galactosidase gene as a selection marker. Food Microbiol 2005; 23:468-75. [PMID: 16943039 DOI: 10.1016/j.fm.2005.06.003] [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: 01/29/2005] [Revised: 06/16/2005] [Accepted: 06/16/2005] [Indexed: 10/25/2022]
Abstract
A new food-grade expression/secretion vector for lactococci, pFMN30, was developed using an alpha-galactosidase gene (melA) of Lactobacillus plantarum as a selection marker. The 4.9-kb pFMN30 is a derivative of the lactococcal vector pMG36e containing a broad-host-range replicon of pWV01. In Lactococcus lactis, transformants carrying the vector were easily detectable by the appearance of a blue colony on a X-alpha-gal-containing medium and also by the growth on a medium containing melibiose as a sole carbon source. The expression/secretion vector was equipped with the controllable and strong nisA promoter. In addition, usp45 signal peptide was inserted for the efficient secretion of a foreign protein outside cells. The vector pFMN30 was used for the expression and secretion of alpha-amylase as a reporter gene, lacking a signal sequence derived from Bacillus licheniformis in L. lactis. These results show that the food-grade expression/secretion vector constructed in the present study could be used for the production of foreign proteins in L. lactis for the production food materials and also for the medicinal purposes.
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Affiliation(s)
- Do-Won Jeong
- School of Agricultural Biotechnology and Center for Agricultural Biomaterials, Seoul National University, Seoul 151-742, Republic of Korea
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86
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Herranz C, Driessen AJM. Sec-mediated secretion of bacteriocin enterocin P by Lactococcus lactis. Appl Environ Microbiol 2005; 71:1959-63. [PMID: 15812026 PMCID: PMC1082533 DOI: 10.1128/aem.71.4.1959-1963.2005] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Most lactic acid bacterium bacteriocins utilize specific leader peptides and dedicated machineries for secretion. In contrast, the enterococcal bacteriocin enterocin P (EntP) contains a typical signal peptide that directs its secretion when heterologously expressed in Lactococcus lactis. Signal peptide mutations and the SecA inhibitor azide blocked secretion. These observations demonstrate that EntP is secreted by the Sec translocase.
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Affiliation(s)
- Carmen Herranz
- Department of Microbiology, Groningen Biomolecualr Sciences and Biotechnology Institute, University of Groningen, Haren, The Netherlands
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87
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Mierau I, Olieman K, Mond J, Smid EJ. Optimization of the Lactococcus lactis nisin-controlled gene expression system NICE for industrial applications. Microb Cell Fact 2005; 4:16. [PMID: 15921537 PMCID: PMC1182390 DOI: 10.1186/1475-2859-4-16] [Citation(s) in RCA: 82] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2005] [Accepted: 05/30/2005] [Indexed: 11/11/2022] Open
Abstract
Background The nisin-controlled gene expression system NICE of Lactococcus lactis is one of the most widely used expression systems in Gram-positive bacteria. Despite its widespread use, no optimization of the culture conditions and nisin induction has been carried out to obtain maximum yields. As a model system induced production of lysostaphin, an antibacterial protein (mainly against Staphylococcus aureus) produced by S. simulans biovar. Staphylolyticus, was used. Three main areas need optimization for maximum yields: cell density, nisin-controlled induction and protein production, and parameters specific for the target-protein. Results In a series of pH-controlled fermentations the following parameters were optimized: pH of the culture, use of NaOH or NH4OH as neutralizing agent, the addition of zinc and phosphate, the fermentation temperature, the time point of induction (cell density of the culture), the amount of nisin added for induction and the amount of three basic medium components, i.e. yeast extract, peptone and lactose. For each culture growth and lysostaphin production was followed. Lysostaphin production yields depended on all parameters that were varied. In the course of the optimization a three-fold increase in lysostaphin yield was achieved from 100 mg/l to 300 mg/l. Conclusion Protein production with the NICE gene expression system in L. lactis strongly depends on the medium composition, the fermentation parameters and the amount of nisin added for induction. Careful optimization of key parameters lead to a significant increase in the yield of the target protein.
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Affiliation(s)
- Igor Mierau
- NIZO food research, P.O. Box 20, 6710 BA EDE, The Netherlands
| | - Kees Olieman
- NIZO food research, P.O. Box 20, 6710 BA EDE, The Netherlands
| | - James Mond
- Biosynexus Inc., 9119 Gaither Road, Gaithersburg, MD 20877, USA
| | - Eddy J Smid
- NIZO food research, P.O. Box 20, 6710 BA EDE, The Netherlands
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88
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Guimarães VD, Gabriel JE, Lefèvre F, Cabanes D, Gruss A, Cossart P, Azevedo V, Langella P. Internalin-expressing Lactococcus lactis is able to invade small intestine of guinea pigs and deliver DNA into mammalian epithelial cells. Microbes Infect 2005; 7:836-44. [PMID: 15878681 DOI: 10.1016/j.micinf.2005.02.012] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2004] [Revised: 02/03/2005] [Accepted: 02/11/2005] [Indexed: 01/16/2023]
Abstract
The use of the food-grade bacterium Lactococcus lactis as antigen delivery vehicle at the mucosal level is an attractive vaccination strategy intensively explored during the last decade. In this study, we developed L. lactis strains which could be used as a DNA delivery vector to combine both advantages of mucosal delivery and of DNA vaccination. To render lactococci capable of invading epithelial cells, the Listeria monocytogenes inlA gene was cloned and expressed in L. lactis under transcriptional control of the native promoter. Western blot and immunofluorescence assays revealed that recombinant lactococci efficiently displayed the cell wall anchored form of InlA. We demonstrated that this expression promotes internalization of L. lactis inlA+ into the human epithelial cell line Caco-2. Gentamicin assay showed that invasiveness of L. lactis in these cells is approximately 100-fold higher for L. lactis inlA+ than for wild type (wt) L. lactis strains. Moreover, we showed that L. lactis inlA+ is able to enter intestinal cells in vivo, after oral inoculation of guinea pigs. After internalization, L. lactis inlA+ was able to deliver a functional eukaryotic gfp gene into epithelial Caco-2 cells; GFP was detected in 1% of internalized cells. The L. lactis inlA+ strain will be a useful bacterial vector for the development of new live oral DNA vaccines. It also constitutes an interesting new model to study the role of internalin in bacterial localization in the animal host.
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Affiliation(s)
- Valeria Dellaretti Guimarães
- Unité de Recherches Laitières et de Génétique Appliquée, Institut National de la Recherche Agronomique, Domaine de Vilvert, 78352 Jouy en Josas cedex, France
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89
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Nouaille S, Bermúdez-Humarán LG, Adel-Patient K, Commissaire J, Gruss A, Wal JM, Azevedo V, Langella P, Chatel JM. Improvement of bovine ß-lactoglobulin production and secretion by Lactococcus lactis. Braz J Med Biol Res 2005; 38:353-9. [PMID: 15761614 DOI: 10.1590/s0100-879x2005000300005] [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] [Indexed: 11/21/2022] Open
Abstract
The stabilizing effects of staphylococcal nuclease (Nuc) and of a synthetic propeptide (LEISSTCDA, hereafter called LEISS) on the production of a model food allergen, bovine beta-lactoglobulin (BLG), in Lactococcus lactis were investigated. The fusion of Nuc to BLG (Nuc-BLG) results in higher production and secretion of the hybrid protein. When LEISS was fused to BLG, the production of the resulting protein LEISS-BLG was only slightly improved compared to the one obtained with Nuc-BLG. However, the secretion of LEISS-BLG was dramatically enhanced (approximately 10- and 4-fold higher than BLG and Nuc-BLG, respectively). Finally, the fusion of LEISS to Nuc-BLG resulting in the protein LEISS-Nuc-BLG led to the highest production of the hybrid protein, estimated at approximately 8 microg/ml (approximately 2-fold higher than Nuc-BLG). In conclusion, the fusions described here led to the improvement of the production and secretion of BLG. These tools will be used to modulate the immune response against BLG via delivery of recombinant lactococci at the mucosal level, in a mouse model of cow's milk allergy.
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Affiliation(s)
- S Nouaille
- Dairy Research and Applied Genetics Unit, INRA, Domaine de Vilvert, Jouy en Josas cedex, France
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90
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Hanniffy S, Wiedermann U, Repa A, Mercenier A, Daniel C, Fioramonti J, Tlaskolova H, Kozakova H, Israelsen H, Madsen S, Vrang A, Hols P, Delcour J, Bron P, Kleerebezem M, Wells J. Potential and opportunities for use of recombinant lactic acid bacteria in human health. ADVANCES IN APPLIED MICROBIOLOGY 2005; 56:1-64. [PMID: 15566975 DOI: 10.1016/s0065-2164(04)56001-x] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Sean Hanniffy
- Institute of Food Research, Norwich Research Park, Colney, Norwich, NR4 7UA, United Kingdom
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91
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Raha AR, Varma NRS, Yusoff K, Ross E, Foo HL. Cell surface display system for Lactococcus lactis: a novel development for oral vaccine. Appl Microbiol Biotechnol 2005; 68:75-81. [PMID: 15635459 DOI: 10.1007/s00253-004-1851-8] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2004] [Revised: 10/25/2004] [Accepted: 11/12/2004] [Indexed: 10/26/2022]
Abstract
The food-grade Lactococcus lactis is a potential vector to be used as a live vehicle for the delivery of heterologous proteins for vaccine and pharmaceutical purposes. We constructed a plasmid vector pSVac that harbors a 255-bp single-repeat sequence of the cell wall-binding protein region of the AcmA protein. The recombinant plasmid was transformed into Escherichia coli and expression of the gene fragment was driven by the T7 promoter of the plasmid. SDS-PAGE showed the presence of the putative AcmA' fragment and this was confirmed by Western blot analysis. The protein was isolated and purified using a His-tag affinity column. When mixed with a culture of L. lactis MG1363, ELISA and immunofluorescence assays showed that the cell wall-binding fragment was anchored onto the outer surface of the bacteria. This indicated that the AcmA' repeat unit retained the active site for binding onto the cell wall surface of the L. lactis cells. Stability assays showed that the fusion proteins (AcmA/A1, AcmA/A3) were stably docked onto the surface for at least 5 days. The AcmA' fragment was also shown to be able to strongly bind onto the cell surface of naturally occurring lactococcal strains and Lactobacillus and, with less strength, the cell surface of Bacillus sphericus. The new system designed for cell surface display of recombinant proteins on L. lactis was evaluated for the expression and display of A1 and A3 regions of the VP1 protein of enterovirus 71 (EV71). The A1 and A3 regions of the VP1 protein of EV71 were cloned upstream to the cell wall-binding domains of AcmA protein and successfully expressed as AcmA/A1 and AcmA/A3. Whole-cell ELISA showed the successful display of VP1 protein epitopes of EV71 on the surface of L. lactis. The success of the anchoring system developed in this study for docking the A1 and A3 epitopes of VP1 onto the surface of L. lactis cells opens up the possibilities of peptide and protein display for not only Lactococcus but also for other gram-positive bacteria. This novel way of displaying epitopes on the cell surface of L. lactis and other related organisms should be very useful in the delivery of vaccines and other useful proteins.
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Affiliation(s)
- A R Raha
- Department of Bioprocess Technology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang, 43400, Selangor, Malaysia.
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92
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Le Loir Y, Azevedo V, Oliveira SC, Freitas DA, Miyoshi A, Bermúdez-Humarán LG, Nouaille S, Ribeiro LA, Leclercq S, Gabriel JE, Guimaraes VD, Oliveira MN, Charlier C, Gautier M, Langella P. Protein secretion in Lactococcus lactis : an efficient way to increase the overall heterologous protein production. Microb Cell Fact 2005; 4:2. [PMID: 15631634 PMCID: PMC545053 DOI: 10.1186/1475-2859-4-2] [Citation(s) in RCA: 164] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2004] [Accepted: 01/04/2005] [Indexed: 11/10/2022] Open
Abstract
Lactococcus lactis, the model lactic acid bacterium (LAB), is a food grade and well-characterized Gram positive bacterium. It is a good candidate for heterologous protein delivery in foodstuff or in the digestive tract. L. lactis can also be used as a protein producer in fermentor. Many heterologous proteins have already been produced in L. lactis but only few reports allow comparing production yields for a given protein either produced intracellularly or secreted in the medium. Here, we review several works evaluating the influence of the localization on the production yields of several heterologous proteins produced in L. lactis. The questions of size limits, conformation, and proteolysis are addressed and discussed with regard to protein yields. These data show that i) secretion is preferable to cytoplasmic production; ii) secretion enhancement (by signal peptide and propeptide optimization) results in increased production yield; iii) protein conformation rather than protein size can impair secretion and thus alter production yields; and iv) fusion of a stable protein can stabilize labile proteins. The role of intracellular proteolysis on heterologous cytoplasmic proteins and precursors is discussed. The new challenges now are the development of food grade systems and the identification and optimization of host factors affecting heterologous protein production not only in L. lactis, but also in other LAB species.
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Affiliation(s)
- Yves Le Loir
- Laboratoire de Microbiologie UMR1253 STLO, INRA-Agrocampus, 65, rue de Saint Brieuc CS84215, 35042 Rennes cedex, France
| | - Vasco Azevedo
- Institute of Biological Sciences, Federal University of Minas Geiras (ICB-UFMG), Belo Horizonte-MG, Brazil
| | - Sergio C Oliveira
- Institute of Biological Sciences, Federal University of Minas Geiras (ICB-UFMG), Belo Horizonte-MG, Brazil
| | - Daniela A Freitas
- Laboratoire de Microbiologie UMR1253 STLO, INRA-Agrocampus, 65, rue de Saint Brieuc CS84215, 35042 Rennes cedex, France
- Institute of Biological Sciences, Federal University of Minas Geiras (ICB-UFMG), Belo Horizonte-MG, Brazil
| | - Anderson Miyoshi
- Institute of Biological Sciences, Federal University of Minas Geiras (ICB-UFMG), Belo Horizonte-MG, Brazil
- Unité de Recherches Laitières et de Génétique Appliquée, Institut National de la Recherche Agronomique, Domaine de Vilvert, 78352 Jouy en Josas Cedex, France
| | - Luis G Bermúdez-Humarán
- Unité de Recherches Laitières et de Génétique Appliquée, Institut National de la Recherche Agronomique, Domaine de Vilvert, 78352 Jouy en Josas Cedex, France
| | - Sébastien Nouaille
- Unité de Recherches Laitières et de Génétique Appliquée, Institut National de la Recherche Agronomique, Domaine de Vilvert, 78352 Jouy en Josas Cedex, France
| | - Luciana A Ribeiro
- Institute of Biological Sciences, Federal University of Minas Geiras (ICB-UFMG), Belo Horizonte-MG, Brazil
- Unité de Recherches Laitières et de Génétique Appliquée, Institut National de la Recherche Agronomique, Domaine de Vilvert, 78352 Jouy en Josas Cedex, France
| | - Sophie Leclercq
- Laboratoire de Microbiologie UMR1253 STLO, INRA-Agrocampus, 65, rue de Saint Brieuc CS84215, 35042 Rennes cedex, France
- Institute of Biological Sciences, Federal University of Minas Geiras (ICB-UFMG), Belo Horizonte-MG, Brazil
| | - Jane E Gabriel
- Institute of Biological Sciences, Federal University of Minas Geiras (ICB-UFMG), Belo Horizonte-MG, Brazil
- Unité de Recherches Laitières et de Génétique Appliquée, Institut National de la Recherche Agronomique, Domaine de Vilvert, 78352 Jouy en Josas Cedex, France
| | - Valeria D Guimaraes
- Institute of Biological Sciences, Federal University of Minas Geiras (ICB-UFMG), Belo Horizonte-MG, Brazil
- Unité de Recherches Laitières et de Génétique Appliquée, Institut National de la Recherche Agronomique, Domaine de Vilvert, 78352 Jouy en Josas Cedex, France
| | - Maricê N Oliveira
- Institute of Biological Sciences, Federal University of Minas Geiras (ICB-UFMG), Belo Horizonte-MG, Brazil
- Unité de Recherches Laitières et de Génétique Appliquée, Institut National de la Recherche Agronomique, Domaine de Vilvert, 78352 Jouy en Josas Cedex, France
| | - Cathy Charlier
- Laboratoire de Microbiologie UMR1253 STLO, INRA-Agrocampus, 65, rue de Saint Brieuc CS84215, 35042 Rennes cedex, France
| | - Michel Gautier
- Laboratoire de Microbiologie UMR1253 STLO, INRA-Agrocampus, 65, rue de Saint Brieuc CS84215, 35042 Rennes cedex, France
| | - Philippe Langella
- Unité de Recherches Laitières et de Génétique Appliquée, Institut National de la Recherche Agronomique, Domaine de Vilvert, 78352 Jouy en Josas Cedex, France
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93
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Llull D, Poquet I. New expression system tightly controlled by zinc availability in Lactococcus lactis. Appl Environ Microbiol 2004; 70:5398-406. [PMID: 15345426 PMCID: PMC520854 DOI: 10.1128/aem.70.9.5398-5406.2004] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Here we developed the new expression system P(Zn) zitR, based on the regulatory signals (P(Zn) promoter and zitR repressor) of the Lactococcus lactis zit operon, involved in Zn(2+) high-affinity uptake and regulation. A P(Zn) zitR-controlled expression vector was constructed, and expression regulation was studied with two reporter genes, uspnuc and lacLM; these genes encode, respectively, a protein derived from Staphylococcus aureus secreted nuclease and Leuconostoc mesenteroides cytoplasmic beta-galactosidase. Nuclease and beta-galactosidase activities of L. lactis MG1363 cells expressing either uspnuc or lacLM under the control of P(Zn) zitR were evaluated on plates and quantified from liquid cultures as a function of divalent metal ion, particularly Zn(2+), availability in the environment. Our results demonstrate that P(Zn) zitR is highly inducible upon divalent cation starvation, obtained either through EDTA addition or during growth in chemically defined medium, and is strongly repressed in the presence of excess Zn(2+). The efficiency of the P(Zn) zitR expression system was compared to that of the well-known nisin-controlled expression (NICE) system with the same reporter genes cloned under either P(Zn) zitR or P(nisA) nisRK control. lacLM induction levels reached with both systems were on the same order of magnitude, even though the NICE system is fivefold more efficient than the P(Zn) zitR system. An even smaller difference or no difference was observed after 3 h of induction when nuclease was used as a reporter for Western blotting detection. P(Zn) zitR proved to be a powerful expression system for L. lactis, as it is tightly controlled by the zinc concentration in the medium.
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Affiliation(s)
- D Llull
- Unité de Recherches Laitières et Génétique Appliquée, INRA, 78352 Jouy-en-Josas Cedex, France
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94
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Cheun HI, Kawamoto K, Hiramatsu M, Tamaoki H, Shirahata T, Igimi S, Makino SI. Protective immunity of SpaA-antigen producing Lactococcus lactis against Erysipelothrix rhusiopathiae infection. J Appl Microbiol 2004; 96:1347-53. [PMID: 15139928 DOI: 10.1111/j.1365-2672.2004.02283.x] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
AIMS To develop an economical, safe and simple vaccination system against swine erysipelas using SpaA-antigen producing Lactococcus lactis. METHODS AND RESULTS The spaA gene of Erysipelothrix rhusiopathiae was inserted into a shuttle plasmid pSECE1 to construct pSECE1.3. The SpaA produced in L. lactis maintained a stable antigenicity without degrading in growth. After mice were inoculated intranasally and orally with pSECE1.3-carrying L. lactis cells, IgG and IgA specific to SpaA were detected, and all the mice survived a challenge with 100 LD(50) of E. rhusiopathiae Tama-96 in the inner thigh. CONCLUSIONS SpaA-producing L. lactis appears useful as an effective subunit vaccine against swine erysipelas. SIGNIFICANCE AND IMPACT OF THE STUDY In this vaccination system, purification of the antigen and injection are unnecessary, leading to a reduced production cost, reduced labour and less stress to the animals. This vaccination system of the lactic acid bacteria should be a safe and suitable vehicle for a polyvalent vaccine.
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Affiliation(s)
- H I Cheun
- Research Center for Animal Hygiene and Food Safety, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido, Japan
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95
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Lindholm A, Smeds A, Palva A. Receptor binding domain of Escherichia coli F18 fimbrial adhesin FedF can be both efficiently secreted and surface displayed in a functional form in Lactococcus lactis. Appl Environ Microbiol 2004; 70:2061-71. [PMID: 15066797 PMCID: PMC383157 DOI: 10.1128/aem.70.4.2061-2071.2004] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Adherence of F18 fimbrial Escherichia coli to porcine intestinal epithelial cells is mediated by the adhesin (FedF) of F18 fimbriae. In a previous study, we demonstrated the specificity of the amino acid residues between 60 and 109 as the receptor binding domain of FedF. In this study, different expression, secretion, and anchoring systems for the receptor binding domain of the FedF adhesin in Lactococcus lactis were evaluated. Two partially overlapping receptor binding domains (42 and 62 amino acid residues) were expressed as fusions with L. lactis subsp. cremoris protein PrtP for evaluation of secretion efficiency. To evaluate the cell surface display of these FedF-PrtP fusions, they were further combined with different lengths of PrtP spacers fused with either the L. lactis AcmA anchor or the PrtP cell wall binding domain. An HtrA-defective L. lactis NZ9000 mutant was constructed to determine its effect on the level of secreted or anchored fusion proteins. Recombinant L. lactis clones secreting the receptor binding domain of F18 fimbriae as a fusion with the H domains of L. lactis protein PrtP were first constructed by using two different signal peptides. FedF-PrtP fusions, directed by the signal sequence of L. brevis SlpA, were throughout found to be secreted at significantly higher quantities than corresponding fusions with the signal peptide of L. lactis Usp45. In the surface display systems tested, the L. lactis AcmA anchor performed significantly better, particularly in the L. lactis NZ9000DeltahtrA strain, compared to the L. lactis PrtP anchor region. Of the cell surface display constructs with the AcmA anchor, only those with the longest PrtP spacer regions resulted in efficient binding of recombinant L. lactis cells to porcine intestinal epithelial cells. These results confirmed that it is possible to efficiently produce the receptor binding domain of the F18 adhesin in a functionally active form in L. lactis.
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Affiliation(s)
- Agneta Lindholm
- Division of Microbiology, Department of Basic Veterinary Sciences, University of Helsinki, Helsinki, Finland
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96
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Mannam P, Jones KF, Geller BL. Mucosal vaccine made from live, recombinant Lactococcus lactis protects mice against pharyngeal infection with Streptococcus pyogenes. Infect Immun 2004; 72:3444-50. [PMID: 15155651 PMCID: PMC415684 DOI: 10.1128/iai.72.6.3444-3450.2004] [Citation(s) in RCA: 79] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
A novel vaccine (LL-CRR) made from live, nonpathogenic Lactococcus lactis that expresses the conserved C-repeat region (CRR) of M protein from Streptococcus pyogenes serotype 6 was tested in mice. Nasally vaccinated mice produced CRR-specific salivary immunoglobulin A (IgA) and serum IgG. Subcutaneously vaccinated mice produced CRR-specific serum IgG but not salivary IgA. A combined regimen produced responses similar to the salivary IgA of nasally vaccinated mice and serum IgG of subcutaneously vaccinated mice. Mice vaccinated nasally or with the combined regimen were significantly protected against pharyngeal infection following a nasal challenge with S. pyogenes M serotype 14. Mice vaccinated subcutaneously were not protected against pharyngeal infection. Mice in all three LL-CRR vaccination groups were significantly protected against the lethal effects of S. pyogenes. Only 1 of 77 challenged mice that were vaccinated with LL-CRR died, whereas 60 of 118 challenged mice that were vaccinated with a control strain or phosphate-buffered saline died. In conclusion, mucosal vaccination with LL-CRR produced CRR-specific salivary IgA and serum IgG, prevented pharyngeal infection with S. pyogenes, and promoted survival.
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Affiliation(s)
- Praveen Mannam
- Department of Microbiology, Oregon State University, Corvallis, Oregon 97330-3804, USA
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97
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Bermúdez-Humarán LG, Cortes-Perez NG, Le Loir Y, Alcocer-González JM, Tamez-Guerra RS, de Oca-Luna RM, Langella P. An inducible surface presentation system improves cellular immunity against human papillomavirus type 16 E7 antigen in mice after nasal administration with recombinant lactococci. J Med Microbiol 2004; 53:427-433. [PMID: 15096553 DOI: 10.1099/jmm.0.05472-0] [Citation(s) in RCA: 106] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Human papillomavirus type 16 (HPV-16) is the major causative agent of cervical cancer. To date, vaccine strategies against HPV-16 are based on the ability of the E7 oncoprotein to elicit an immune response against this virus. In this study, the use of an inducible or a constitutive system to produce the HPV-16 E7 protein in Lactococcus lactis, a non-pathogenic and non-invasive Gram-positive bacterium, was compared. The highest E7 production was obtained with the inducible system. When mice were immunized intranasally with recombinant lactococci expressing either inducible or constitutive E7, an antigen-specific cellular response (i.e. secretion of IL2 and IFN-gamma cytokines) was evoked and was substantially higher in mice receiving L. lactis expressing E7 with the inducible system. As bacterial antigen location may influence the immune response, recombinant L. lactis strains that produced E7 in three cellular locations, intracellular, secreted or cell-wall-anchored were evaluated. The highest immune response was elicited by administration of L. lactis producing an inducible cell-wall-anchored form of E7 protein. These promising results represent a step towards the development of a new, safe mucosal vector to treat HPV-related cervical cancer.
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Affiliation(s)
- Luis G Bermúdez-Humarán
- Laboratorio de Inmunología y Virología, Facultad de Ciencias Biológicas. Universidad Autónoma de Nuevo León, San Nicolás de los Garza, N.L., Mexico 2Unité de Recherches Laitières et de Génétique Appliquée, INRA, Domaine de Vilvert, 78352 Jouy-en-Josas cedex, France
| | - Naima G Cortes-Perez
- Laboratorio de Inmunología y Virología, Facultad de Ciencias Biológicas. Universidad Autónoma de Nuevo León, San Nicolás de los Garza, N.L., Mexico 2Unité de Recherches Laitières et de Génétique Appliquée, INRA, Domaine de Vilvert, 78352 Jouy-en-Josas cedex, France
| | - Yves Le Loir
- Laboratorio de Inmunología y Virología, Facultad de Ciencias Biológicas. Universidad Autónoma de Nuevo León, San Nicolás de los Garza, N.L., Mexico 2Unité de Recherches Laitières et de Génétique Appliquée, INRA, Domaine de Vilvert, 78352 Jouy-en-Josas cedex, France
| | - Juan M Alcocer-González
- Laboratorio de Inmunología y Virología, Facultad de Ciencias Biológicas. Universidad Autónoma de Nuevo León, San Nicolás de los Garza, N.L., Mexico 2Unité de Recherches Laitières et de Génétique Appliquée, INRA, Domaine de Vilvert, 78352 Jouy-en-Josas cedex, France
| | - Reyes S Tamez-Guerra
- Laboratorio de Inmunología y Virología, Facultad de Ciencias Biológicas. Universidad Autónoma de Nuevo León, San Nicolás de los Garza, N.L., Mexico 2Unité de Recherches Laitières et de Génétique Appliquée, INRA, Domaine de Vilvert, 78352 Jouy-en-Josas cedex, France
| | - Roberto Montes de Oca-Luna
- Laboratorio de Inmunología y Virología, Facultad de Ciencias Biológicas. Universidad Autónoma de Nuevo León, San Nicolás de los Garza, N.L., Mexico 2Unité de Recherches Laitières et de Génétique Appliquée, INRA, Domaine de Vilvert, 78352 Jouy-en-Josas cedex, France
| | - Philippe Langella
- Laboratorio de Inmunología y Virología, Facultad de Ciencias Biológicas. Universidad Autónoma de Nuevo León, San Nicolás de los Garza, N.L., Mexico 2Unité de Recherches Laitières et de Génétique Appliquée, INRA, Domaine de Vilvert, 78352 Jouy-en-Josas cedex, France
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98
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Nouaille S, Commissaire J, Gratadoux JJ, Ravn P, Bolotin A, Gruss A, Le Loir Y, Langella P. Influence of lipoteichoic acid D-alanylation on protein secretion in Lactococcus lactis as revealed by random mutagenesis. Appl Environ Microbiol 2004; 70:1600-7. [PMID: 15006784 PMCID: PMC368283 DOI: 10.1128/aem.70.3.1600-1607.2004] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Lactococcus lactis, a food-grade nonpathogenic lactic acid bacterium, is a good candidate for the production of heterologous proteins of therapeutic interest. We examined host factors that affect secretion of heterologous proteins in L. lactis. Random insertional mutagenesis was performed with L. lactis strain MG1363 carrying a staphylococcal nuclease (Nuc) reporter cassette in its chromosome. This cassette encodes a fusion protein between the signal peptide of the Usp45 lactococcal protein and the mature moiety of a truncated form of Nuc (NucT). The Nuc secretion efficiency (secreted NucT versus total NucT) from this construct is low in L. lactis (approximately 40%). Twenty mutants affected in NucT production and/or in secretion capacity were selected and identified. In these mutants, several independent insertions mapped in the dltA gene (involved in D-alanine transfer in lipoteichoic acids) and resulted in a NucT secretion defect. Characterization of the dltA mutant phenotype with respect to NucT secretion revealed that it is involved in a late secretion stage by causing mature NucT entrapment at the cell surface.
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Affiliation(s)
- S Nouaille
- Unité de Recherches Laitières et de Génétique Appliquée, Institut National de la Recherche Agronomique, Domaine de Vilvert, 78352 Jouy en Josas cedex, France
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99
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Dieye Y, Hoekman AJW, Clier F, Juillard V, Boot HJ, Piard JC. Ability of Lactococcus lactis to export viral capsid antigens: a crucial step for development of live vaccines. Appl Environ Microbiol 2004; 69:7281-8. [PMID: 14660377 PMCID: PMC309906 DOI: 10.1128/aem.69.12.7281-7288.2003] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
The food grade bacterium Lactococcus lactis is a potential vehicle for protein delivery in the gastrointestinal tract. As a model, we constructed lactococcal strains producing antigens of infectious bursal disease virus (IBDV). IBDV infects chickens and causes depletion of B-lymphoid cells in the bursa of Fabricius and subsequent immunosuppression, morbidity, or acute mortality. The two major IBDV antigens, i.e., VP2 and VP3, that form the viral capsid were expressed and targeted to the cytoplasm, the cell wall, or the extracellular compartment of L. lactis. Whereas VP3 was successfully targeted to the three compartments by the use of relevant expression and export vectors, VP2 was recalcitrant to export, thus confirming the difficulty of translocating naturally nonsecreted proteins across the bacterial membrane. This defect could be partly overcome by fusing VP2 to a naturally secreted protein (the staphylococcal nuclease Nuc) that carried VP2 through the membrane. Lactococcal strains producing Nuc-VP2 and VP3 in various bacterial compartments were administered orally to chickens. The chickens did not develop any detectable immune response against VP2 and VP3 but did exhibit an immune response against Nuc when Nuc-VP2 was anchored to the cell wall of lactococci.
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Affiliation(s)
- Yakhya Dieye
- Useful Bacterial Surface Proteins, INRA-URLGA, 78352 Jouy-en-Josas Cedex, France
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100
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Chatel JM, Nouaille S, Adel-Patient K, Le Loir Y, Boe H, Gruss A, Wal JM, Langella P. Characterization of a Lactococcus lactis strain that secretes a major epitope of bovine beta-lactoglobulin and evaluation of its immunogenicity in mice. Appl Environ Microbiol 2004; 69:6620-7. [PMID: 14602621 PMCID: PMC262270 DOI: 10.1128/aem.69.11.6620-6627.2003] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Bovine beta-lactoglobulin (Blg) is one of the major cow's milk allergens. Peptide 41-60 of Blg (Blg41-60) was described as a murine T-cell determinant and a murine, rat, and human immunoglobulin E (IgE) epitope. The aim of this study was the expression of Blg41-60 as a fusion protein in the food-grade bacterium Lactococcus lactis and the characterization of its immunogenicity in mice. We constructed a recombinant strain of L. lactis capable of inducible production and secretion of Blg41-60::Nuc, a fusion protein between Blg41-60 and the mature part of the staphylococcal nuclease (Nuc). The highest production yield of Blg41-60::Nuc (32.5 mg/liter) was reached 4 h after induction. At this time, up to 75% of Blg41-60::Nuc was secreted. When monoclonal antibodies specific for Blg41-60 were used, purified Blg41-60::Nuc and synthetic Blg41-60 exhibited very similar immunoreactivities. Subcutaneous coadministration of purified Blg41-60::Nuc and killed nonrecombinant L. lactis resulted in the induction of specific anti-Blg41-60 IgG2a and IgG1. The IgG1/IgG2a ratio and the lack of specific IgE suggest a Th1-type immune response, i.e., a nonallergic response. Similar administrations of the killed Blg41-60::Nuc-producing L. lactis strain did not elicit a specific immune response, whereas a transitory mucosal IgA-specific immune response was induced in mice after oral administration of the live Blg41-60::Nuc-producing L. lactis strain.
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Affiliation(s)
- Jean-Marc Chatel
- Unité d'Immuno-Allergie Alimentaire, INRA/CEA, CE de Saclay, DRM-SPI, 91191 Gif-sur-Yvette, France
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