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Saggese A, Baccigalupi L, Donadio G, Ricca E, Isticato R. The Bacterial Spore as a Mucosal Vaccine Delivery System. Int J Mol Sci 2023; 24:10880. [PMID: 37446054 DOI: 10.3390/ijms241310880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 06/27/2023] [Accepted: 06/28/2023] [Indexed: 07/15/2023] Open
Abstract
The development of efficient mucosal vaccines is strongly dependent on the use of appropriate vectors. Various biological systems or synthetic nanoparticles have been proposed to display and deliver antigens to mucosal surfaces. The Bacillus spore, a metabolically quiescent and extremely resistant cell, has also been proposed as a mucosal vaccine delivery system and shown able to conjugate the advantages of live and synthetic systems. Several antigens have been displayed on the spore by either recombinant or non-recombinant approaches, and antigen-specific immune responses have been observed in animals immunized by the oral or nasal route. Here we review the use of the bacterial spore as a mucosal vaccine vehicle focusing on the advantages and drawbacks of using the spore and of the recombinant vs. non-recombinant approach to display antigens on the spore surface. An overview of the immune responses induced by antigen-displaying spores so far tested in animals is presented and discussed.
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Affiliation(s)
- Anella Saggese
- Department of Biology, Federico II University, 80126 Naples, Italy
| | - Loredana Baccigalupi
- Department of Molecular Medicine and Medical Biotechnology, Federico II University, 80131 Naples, Italy
| | - Giuliana Donadio
- Department of Pharmacy, University of Salerno, 84084 Salerno, Italy
| | - Ezio Ricca
- Department of Biology, Federico II University, 80126 Naples, Italy
| | - Rachele Isticato
- Department of Biology, Federico II University, 80126 Naples, Italy
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2
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Lin WT, How SC, Lin WZ, Chen FH, Liao WC, Ma IC, Wang SSS, Hou SY. Using flow cytometry to develop a competitive assay for the detection of biotin. J Taiwan Inst Chem Eng 2023. [DOI: 10.1016/j.jtice.2023.104691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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3
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Gonçalves G, Santos RA, Coutinho F, Pedrosa N, Curado M, Machado M, Costas B, Bonneville L, Serrano M, Carvalho AP, Díaz-Rosales P, Oliva-Teles A, Couto A, Serra CR. Oral vaccination of fish against vibriosis using spore-display technology. Front Immunol 2022; 13:1012301. [DOI: 10.3389/fimmu.2022.1012301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Accepted: 09/29/2022] [Indexed: 11/13/2022] Open
Abstract
Oral vaccines are highly demanded by the aquaculture sector, to allow mass delivery of antigens without using the expensive and labor-intensive injectable vaccines. These later require individual handling of fish, provoking stress-related mortalities.One possible strategy to create injection-free vaccine delivery vehicles is the use of bacterial spores, extremely resistant structures with wide biotechnological applications, including as probiotics, display systems, or adjuvants. Bacterial spores, in particular those of Bacillus subtilis, have been shown to behave as mucosal vaccine adjuvants in mice models. However, such technology has not been extensively explored against fish bacterial disease.In this study, we used a laboratory strain of B. subtilis, for which a variety of genetic manipulation tools are available, to display at its spores surface either a Vibrio antigenic protein, OmpK, or the green fluorescence protein, GFP. When previously vaccinated by immersion with the OmpK- carrying spores, zebrafish survival upon a bacterial challenge with V. anguillarum and V. parahaemolyticus, increased up to 50 - 90% depending on the pathogen targeted. Further, we were able to detect anti-GFP-antibodies in the serum of European seabass juveniles fed diets containing the GFP-carrying spores and anti-V. anguillarum antibodies in the serum of European seabass juveniles fed the OmpK-carrying spores containing diet. More important, seabass survival was increased from 60 to 86% when previously orally vaccinated with in-feed OmpK- carrying spores. Our results indicate that B. subtilis spores can effectively be used as antigen-carriers for oral vaccine delivery in fish.
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4
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Wickramasuriya SS, Park I, Lee Y, Kim WH, Przybyszewski C, Gay CG, van Oosterwijk JG, Lillehoj HS. Oral Delivery of Bacillus subtilis Expressing Chicken NK-2 Peptide Protects Against Eimeria acervulina Infection in Broiler Chickens. Front Vet Sci 2021; 8:684818. [PMID: 34150899 PMCID: PMC8213023 DOI: 10.3389/fvets.2021.684818] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Accepted: 05/05/2021] [Indexed: 01/13/2023] Open
Abstract
Chicken NK-lysin peptide 2 (cNK-2) is a natural lytic peptide with direct cytotoxicity against many apicomplexan parasites including Eimeria. Developing an effective oral delivery strategy to express cNK-2 in the intestine, where Eimeria parasites interact with the host's gut epithelial cells, may effectively reduce the fecundity of parasites and minimize intestinal damage. Furthermore, cNK-2 modulates gut immune responses to decrease local inflammation elicited by Eimeria infection in the intestine. Therefore, we developed a stable strain of Bacillus subtilis (B. subtilis) that carries cNK-2 to the gut to determine its effectiveness in ameliorating the negative impacts of coccidiosis and to replace the use of antibiotics in controlling coccidiosis in commercial broiler chicken production. Chickens were randomly allocated into eight treatment groups: two control groups (NC: E. acervulina infected non-B. subtilis control; CON: non-infected control); three B. subtilis-empty vector (EV) groups (EV6: 106 cfu/day/bird; EV8: 108 cfu/day/bird; EV10: 1010 cfu/day/bird), and three B. subtilis-cNK-2 groups (NK6: 106 cfu/day/bird; NK8: 108 cfu/day/bird; NK10: 1010 cfu/day/bird). All chickens, except those in the CON group, were challenged with 5,000 freshly sporulated E. acervulina oocysts through oral gavage on day 15. Chickens were given an oral dose of B. subtilis on days 14, 15, and 16. Body weight, weight gains, and fecal oocyst shedding were measured. To investigate the efficacy of oral B. subtilis-cNK-2 against coccidiosis, gene expression of gut health-related biomarkers was measured using RT-PCR. Markers included SOD1, CAT, and HMOX1 for oxidative stress in the spleen and intestinal mucosa, OCLN, ZO-1, and JAM2 for tight junction proteins, and MUC2 for mucin gene expression in the gut. The results showed that oral treatment of young chickens with B. subtilis-cNK-2 improved growth performance, enhanced gut integrity, and reduced fecal oocyst shedding. Altogether, these results confirm B. subtilis-cNK-2 treatment as a promising and effective alternative strategy to replace antibiotics against coccidiosis based on its ability to reduce parasite survival, to reduce coccidiosis-induced body weight loss, and to decrease gut damage based on the enhanced expression of proteins associated with gut integrity and intestinal health.
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Affiliation(s)
- Samiru S Wickramasuriya
- Animal Bioscience and Biotechnology Laboratory, Agricultural Research Service, United States Department of Agriculture, Beltsville, MD, United States
| | - Inkyung Park
- Animal Bioscience and Biotechnology Laboratory, Agricultural Research Service, United States Department of Agriculture, Beltsville, MD, United States
| | - Youngsub Lee
- Animal Bioscience and Biotechnology Laboratory, Agricultural Research Service, United States Department of Agriculture, Beltsville, MD, United States
| | - Woo H Kim
- Animal Bioscience and Biotechnology Laboratory, Agricultural Research Service, United States Department of Agriculture, Beltsville, MD, United States.,College of Veterinary Medicine, Institute of Animal Medicine, Gyeongsang National University, Jinju, South Korea
| | | | - Cyril G Gay
- National Program Staff-Animal Health, Agricultural Research Service, United States Department of Agriculture, Beltsville, MD, United States
| | | | - Hyun S Lillehoj
- Animal Bioscience and Biotechnology Laboratory, Agricultural Research Service, United States Department of Agriculture, Beltsville, MD, United States
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Low CX, Tan LTH, Ab Mutalib NS, Pusparajah P, Goh BH, Chan KG, Letchumanan V, Lee LH. Unveiling the Impact of Antibiotics and Alternative Methods for Animal Husbandry: A Review. Antibiotics (Basel) 2021; 10:578. [PMID: 34068272 PMCID: PMC8153128 DOI: 10.3390/antibiotics10050578] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 05/07/2021] [Accepted: 05/09/2021] [Indexed: 02/07/2023] Open
Abstract
Since the 1950s, antibiotics have been used in the field of animal husbandry for growth promotion, therapy and disease prophylaxis. It is estimated that up to 80% of the antibiotics produced by the pharmaceutical industries are used in food production. Most of the antibiotics are used as feed additives at sub-therapeutic levels to promote growth. However, studies show the indiscriminate use of antibiotics has led to the emergence of multidrug-resistant pathogens that threaten both animal health and human health, including vancomycin-resistant Enterococcus (VRE), Methicillin-resistant Staphylococcus aureus (MRSA) and carbapenem-resistant Enterobacteriaceae (CRE). This scenario is further complicated by the slow progress in achieving scientific breakthroughs in uncovering novel antibiotics following the 1960s. Most of the pharmaceutical industries have long diverted research funds away from the field of antibiotic discovery to more lucrative areas of drug development. If this situation is allowed to continue, humans will return to the pre-antibiotics era and potentially succumb to huge health and economic consequences. Fortunately, studies investigating various alternatives to antibiotics use in livestock show promising results. These alternatives include the application of bacteriophages and phage derived peptidoglycan degrading enzymes, engineered peptides, egg yolk antibodies, probiotics, prebiotics and synbiotics, as well as quorum quenching molecules. Therefore, this review aims to discuss the use of growth-promoting antibiotics and their impact on livestock and provide insights on the alternative approaches for animal husbandry.
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Affiliation(s)
- Chuen Xian Low
- Novel Bacteria and Drug Discovery (NBDD) Research Group, Microbiome and Bioresource Research Strength (MBRS), Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Selangor Darul Ehsan 47500, Malaysia; (C.X.L.); (L.T.-H.T.); (N.-S.A.M.); (P.P.)
| | - Loh Teng-Hern Tan
- Novel Bacteria and Drug Discovery (NBDD) Research Group, Microbiome and Bioresource Research Strength (MBRS), Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Selangor Darul Ehsan 47500, Malaysia; (C.X.L.); (L.T.-H.T.); (N.-S.A.M.); (P.P.)
- Clinical School Johor Bahru, Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Johor Bahru 80100, Malaysia
| | - Nurul-Syakima Ab Mutalib
- Novel Bacteria and Drug Discovery (NBDD) Research Group, Microbiome and Bioresource Research Strength (MBRS), Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Selangor Darul Ehsan 47500, Malaysia; (C.X.L.); (L.T.-H.T.); (N.-S.A.M.); (P.P.)
- UKM Medical Molecular Biology Institute (UMBI), UKM Medical Centre, Universiti Kebangsaan Malaysia, Kuala Lumpur 50603, Malaysia
| | - Priyia Pusparajah
- Novel Bacteria and Drug Discovery (NBDD) Research Group, Microbiome and Bioresource Research Strength (MBRS), Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Selangor Darul Ehsan 47500, Malaysia; (C.X.L.); (L.T.-H.T.); (N.-S.A.M.); (P.P.)
| | - Bey-Hing Goh
- Biofunctional Molecule Exploratory Research Group (BMEX), School of Pharmacy, Monash University Malaysia, Selangor Darul Ehsan 47500, Malaysia;
- College of Pharmaceutical Sciences, Zhenjiang University, Hangzhou 310058, China
| | - Kok-Gan Chan
- Division of Genetics and Molecular Biology, Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia
- International Genome Centre, Jiangsu University, Zhenjiang 212013, China
| | - Vengadesh Letchumanan
- Novel Bacteria and Drug Discovery (NBDD) Research Group, Microbiome and Bioresource Research Strength (MBRS), Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Selangor Darul Ehsan 47500, Malaysia; (C.X.L.); (L.T.-H.T.); (N.-S.A.M.); (P.P.)
| | - Learn-Han Lee
- Novel Bacteria and Drug Discovery (NBDD) Research Group, Microbiome and Bioresource Research Strength (MBRS), Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Selangor Darul Ehsan 47500, Malaysia; (C.X.L.); (L.T.-H.T.); (N.-S.A.M.); (P.P.)
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6
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Lin WZ, Ma IC, Wang JP, Hsieh PC, Liu CC, Hou SY. Highly sensitive protein detection using recombinant spores and lateral flow immunoassay. Anal Bioanal Chem 2021; 413:2235-2246. [PMID: 33608751 DOI: 10.1007/s00216-021-03195-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 01/20/2021] [Accepted: 01/23/2021] [Indexed: 11/28/2022]
Abstract
Lateral flow immunoassays (LFIs) can be used to detect intact bacteria or spores; when gold nanoparticles (AuNPs) are used as the signal reporters, the detection limits are very low. Spore-based surface display has been widely studied for enzyme immobilization and live-nontoxic oral vaccines. In this study, recombinant spores were used to improve the sensitivity of a LFI. We developed a test kit that combines streptavidin-displayed spores with a LFI assay for rapid protein detection. The recombinant spores served as a signal amplifier and AuNPs were used as the signal reporters. For detection of β-galactosidase, which was used as the model protein, the detection limit was about 10-15 mol, while that of the conventional LFI is about 10-12 mol. In both methods, nanogold was used as the colorimetric signal and could be observed with the naked eye. This method improved LFI sensitivity without sacrificing its advantages. Furthermore, enhanced green fluorescent protein (eGFP) was also displayed on the surface of the streptavidin-displayed spores. Without AuNPs, the fluorescent recombinant spores acted as the signal, which could be detected by a fluorescence detector, such as a fluorescence microscope. The detection limit was 10-16 mol under fluorescence microscopy whose magnification was 25-fold. Therefore, in conclusion, in this proof of concept study, the detection limits of both proposed methods were far superior to those of traditional LFI assay.
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Affiliation(s)
- Wen-Zhi Lin
- Institute of Preventive Medicine, National Defense Medical Center, Taipei, 11490, Taiwan.,Department of Biology and Anatomy, National Defense Medical Center, Taipei, 11490, Taiwan
| | - I-Cheng Ma
- Graduate Institute of Chemical Engineering, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei, 10608, Taiwan
| | - Jun-Pei Wang
- Graduate Institute of Chemical Engineering, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei, 10608, Taiwan
| | - Ping-Chun Hsieh
- Graduate Institute of Biochemical and Biomedical Engineering, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei, 10608, Taiwan
| | - Cheng-Che Liu
- Graduate Institute of Physiology, National Defense Medical Center, Taipei, 11490, Taiwan
| | - Shao-Yi Hou
- Graduate Institute of Biochemical and Biomedical Engineering, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei, 10608, Taiwan.
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Germination-Arrest Bacillus subtilis Spores as An Oral Delivery Vehicle of Grass Carp Reovirus (GCRV) Vp7 Antigen Augment Protective Immunity in Grass Carp ( Ctenopharyngodon idella). Genes (Basel) 2020; 11:genes11111351. [PMID: 33202570 PMCID: PMC7696455 DOI: 10.3390/genes11111351] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 11/09/2020] [Accepted: 11/11/2020] [Indexed: 12/15/2022] Open
Abstract
Oral vaccination is a practical method for the active immunization of farmed fish in the matter of animal welfare and handling costs. However, it always shows insufficient protective immunity, mainly due to antigen degradation in the gastrointestinal tract (GIT). Bacillus subtilis spores have been shown to be able to protect surface-display heterologous antigens against degradation. Neverthless, the spores can germinate in GIT, which causes loss of the antigens with spore coat disassembly. Here, we developed a novel surface display system using the B. subtilis spore coat proteins CotB and CotC as anchors for the heterogenous antigen, and the germination-controlling genes cwlJ and sleB as the ectopic integration sites for the fusion genes. Using this display system, we engineered germination-arrest spores displaying the model antigen Vp7 of grass carp reovirus (GCRV) on their surface. Oral vaccination of the engineered spores could confer immune protection against GCRV in grass carp (Ctenopharyngodon idella) via eliciting adaptive humoral and cellular immune responses. Most importantly, the germination-arrest spores were shown to significantly augment immunogenicity and protection above the engineered spores based on the existing surface display system. Therefore, the presently reported antigen expression strategy opens new and promising avenues for developing oral vaccines for the immunization of farmed fish species.
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Nasal Immunization with the C-Terminal Domain of Bcla3 Induced Specific IgG Production and Attenuated Disease Symptoms in Mice Infected with Clostridioides difficile Spores. Int J Mol Sci 2020; 21:ijms21186696. [PMID: 32933117 PMCID: PMC7555657 DOI: 10.3390/ijms21186696] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 07/14/2020] [Accepted: 07/16/2020] [Indexed: 01/05/2023] Open
Abstract
Clostridioides difficile is a Gram-positive, spore-forming bacterium that causes a severe intestinal infection. Spores of this pathogen enter in the human body through the oral route, interact with intestinal epithelial cells and persist in the gut. Once germinated, the vegetative cells colonize the intestine and produce toxins that enhance an immune response that perpetuate the disease. Therefore, spores are major players of the infection and ideal targets for new therapies. In this context, spore surface proteins of C. difficile, are potential antigens for the development of vaccines targeting C. difficile spores. Here, we report that the C-terminal domain of the spore surface protein BclA3, BclA3CTD, was identified as an antigenic epitope, over-produced in Escherichia coli and tested as an immunogen in mice. To increase antigen stability and efficiency, BclA3CTD was also exposed on the surface of B. subtilis spores, a mucosal vaccine delivery system. In the experimental conditions used in this study, free BclA3CTD induced antibody production in mice and attenuated some C. difficile infection symptoms after a challenge with the pathogen, while the spore-displayed antigen resulted less effective. Although dose regimen and immunization routes need to be optimized, our results suggest BclA3CTD as a potentially effective antigen to develop a new vaccination strategy targeting C. difficile spores.
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Detection of biotin with zeptomole sensitivity using recombinant spores and a competition assay. Anal Bioanal Chem 2020; 412:7219-7226. [PMID: 32761258 DOI: 10.1007/s00216-020-02854-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 07/22/2020] [Accepted: 07/30/2020] [Indexed: 10/23/2022]
Abstract
Detection of protein-binding analytes is important for many applications. Currently, various instrument-based techniques are used for detecting protein-binding analytes. However, such techniques have several limitations including high cost and time-consuming sample processing. In order to overcome these limitations, we developed a sensitive competition assay for the detection of protein-binding analytes using recombinant endospores as a sensing element. The method is based on the competition between the biotin, the model analyte, and a biotin-magnetic bead complex to bind the recombinant spores containing the biotin binding region of streptavidin. After magnetic attraction, the residual spores in the suspension are spread on plates to form colonies which are used to count the amount of the residual spores; the higher the residual ratio of spores, the more biotin in the samples. The linear range was from 150 zmol to 1.5 fmol and the limit of detection of the assay was 150 zmol. The assay proposed herein is sensitive and does not require any expensive equipment. It is suitable for qualitative or semi-quantitative analysis such as screening tests for the detection of toxic chemicals.
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Boonyakida J, Xu J, Satoh J, Nakanishi T, Mekata T, Kato T, Park EY. Antigenic properties of VP15 from white spot syndrome virus in kuruma shrimp Marsupenaeus japonicus. FISH & SHELLFISH IMMUNOLOGY 2020; 101:152-158. [PMID: 32234560 DOI: 10.1016/j.fsi.2020.03.061] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Revised: 03/25/2020] [Accepted: 03/27/2020] [Indexed: 06/11/2023]
Abstract
White spot syndrome virus (WSSV) is known as one of the most lethal pathogenic viruses in shrimp causing massive damage to shrimp aquaculture industries. To date, no effective treatment or prevention has been found. In this study, five recombinant viral proteins VP15, VP19, VP24, VP26, and VP28 were expressed and purified in E. coli, which were employed as candidates against WSSV in Kuruma shrimp Marsupenaeus japonicus. In vivo antiviral assay in this study newly revealed that VP15 of major nucleocapsid protein, being known as a DNA-binding protein provided the substantial protection against the viral infection when pre-injected into shrimps. Furthermore, we also verified the immunogenic effects of purified VP15 and VP19 proteins produced in a silkworm-bacmid expression system. Taken together, our study identified VP15 as an effective candidate against WSSV infection in the Kuruma shrimp. It is interesting to uncover why and how VP15 is involved in the immune memory in shrimp in the future study.
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Affiliation(s)
- Jirayu Boonyakida
- Department of Bioscience, Graduate School of Science and Technology, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka, 422-8529, Japan.
| | - Jian Xu
- Research Institute of Green Science and Technology, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka, 422-8529, Japan.
| | - Jun Satoh
- National Research Institute of Aquaculture, Japan Fisheries Research and Education Agency, Saiki, Oita, Japan.
| | - Takafumi Nakanishi
- Department of Bioscience, Graduate School of Science and Technology, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka, 422-8529, Japan.
| | - Toru Mekata
- National Research Institute of Aquaculture, Japan Fisheries Research and Education Agency, Saiki, Oita, Japan.
| | - Tatsuya Kato
- Department of Bioscience, Graduate School of Science and Technology, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka, 422-8529, Japan; Research Institute of Green Science and Technology, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka, 422-8529, Japan.
| | - Enoch Y Park
- Department of Bioscience, Graduate School of Science and Technology, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka, 422-8529, Japan; Research Institute of Green Science and Technology, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka, 422-8529, Japan.
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11
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Nguyen T, Nguyen H, Pham H, Nguyen A, Phan T, Hara T, Takatsuka Y, Nguyen A. Cooperative improvement in growth rate, red‐colour score and astaxanthin level of white‐leg shrimp by
Bacillus
strains originating from shrimp gut. J Appl Microbiol 2020; 129:51-62. [DOI: 10.1111/jam.14603] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 12/27/2019] [Accepted: 02/03/2020] [Indexed: 12/17/2022]
Affiliation(s)
- T.T. Nguyen
- Key Laboratory of Enzyme and Protein Technology VNU University of Science Vietnam National University, Hanoi Hanoi Vietnam
| | - H.T. Nguyen
- Key Laboratory of Enzyme and Protein Technology VNU University of Science Vietnam National University, Hanoi Hanoi Vietnam
| | - H.T.T. Pham
- Key Laboratory of Enzyme and Protein Technology VNU University of Science Vietnam National University, Hanoi Hanoi Vietnam
| | - A.H. Nguyen
- ANABIO Research & Development JSC Hanoi Vietnam
| | - T.N. Phan
- Key Laboratory of Enzyme and Protein Technology VNU University of Science Vietnam National University, Hanoi Hanoi Vietnam
| | - T. Hara
- Environmental Microbiology Research section Laboratory for Complex Energy Processes Institute of Advanced Energy Kyoto University Kyoto Japan
| | - Y. Takatsuka
- Environmental Microbiology Research section Laboratory for Complex Energy Processes Institute of Advanced Energy Kyoto University Kyoto Japan
| | - A.T.V. Nguyen
- Key Laboratory of Enzyme and Protein Technology VNU University of Science Vietnam National University, Hanoi Hanoi Vietnam
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12
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Ma Y, Liu Y, Wu Y, Jia L, Liu X, Wang Q, Zhang Y. An attenuated Vibrio harveyi surface display of envelope protein VP28 to be protective against WSSV and vibriosis as an immunoactivator for Litopenaeus vannamei. FISH & SHELLFISH IMMUNOLOGY 2019; 95:195-202. [PMID: 31604149 DOI: 10.1016/j.fsi.2019.10.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Revised: 09/29/2019] [Accepted: 10/07/2019] [Indexed: 06/10/2023]
Abstract
Surface display can expose foreign antigenic protein on the surface of the vaccine vector, which is promising choice to elicit better immune responses. In this study, we apply this strategy to develop an immunoactivator by using a live attenuated Vibrio harveyi as an antigenic protein carrier with surface displayed VP28, a major envelope protein of white spot syndrome virus (WSSV), for two major pathogens of Litopenaeus vannamei. As a result, the immunoactivator showed self-limited growth and attenuation of virulence in shrimp via different inoculation routes either with single-repetitive dose or high dose. Moreover, either intramuscular injection or oral administration of the immunoactivator did not affect growth of shrimp body weight or cause pathologic changes. Additionally, the rapid immunoprotection was induced by the immunoactivator after administration for one week with highly relative percent survival (RPS) more than 90% against both V. harveyi and WSSV. Until 4 weeks post administration, the immunoactivator still possessed efficient immune effect with no less than 60% RPS for both pathogens. Totally, the attenuated V. harveyi surface displaying VP28 could be a potential immunoactivator for WSSV and vibriosis control in L. vannamei.
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Affiliation(s)
- Yue Ma
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, 200237, China; Shanghai Engineering Research Center of Mariculture Animal Vaccines, Shanghai, 200237, China
| | - Yabo Liu
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Yanyan Wu
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Lei Jia
- Tianjin Bohai Fishery Research Institute, Chinese Academy of Fishery Sciences, Tianjin, 300221, China.
| | - Xiaohong Liu
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, 200237, China; Shanghai Engineering Research Center of Mariculture Animal Vaccines, Shanghai, 200237, China.
| | - Qiyao Wang
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, 200237, China; Shanghai Engineering Research Center of Mariculture Animal Vaccines, Shanghai, 200237, China; Shanghai Collaborative Innovation Center for Biomanufacturing, Shanghai, 200237, China
| | - Yuanxing Zhang
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, 200237, China; Shanghai Engineering Research Center of Mariculture Animal Vaccines, Shanghai, 200237, China; Shanghai Collaborative Innovation Center for Biomanufacturing, Shanghai, 200237, China
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13
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Zhan Y, Zhu P, Liang J, Xu Z, Feng X, Liu Y, Xu H, Li S. Economical production of isomaltulose from agricultural residues in a system with sucrose isomerase displayed on Bacillus subtilis spores. Bioprocess Biosyst Eng 2019; 43:75-84. [PMID: 31552499 DOI: 10.1007/s00449-019-02206-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2019] [Revised: 07/21/2019] [Accepted: 08/16/2019] [Indexed: 02/03/2023]
Abstract
A safe, efficient, environmentally friendly process for producing isomaltulose is needed. Here, the biocatalyst, sucrose isomerase (SIase) from Erwinia rhapontici NX-5, displayed on the surface of Bacillus subtilis 168 spores (food-grade strain) was applied for isomaltulose production. The anchored SIase showed relatively high bioactivity, suggesting that the surface display system using CotX as the anchoring protein was successful. The stability of the anchored SIase was also significantly better. Thermal stability analysis showed that 80% of relative activity was retained after incubation at 40 °C and 45 °C for 60 min. To develop an economical industrial fermentation medium, untreated beet molasses (30 g/L) and cold-pressed soybean powder (50 g/L) were utilised as the main broth components for SIase pilot-scale production. Under the optimal conditions, the productive spores converted 92% of sucrose after 6 h and the conversion rate was 45% after six cycles. Isomaltulose production with this system using the agricultural residues, untreated beet molasses and soybean powder, as substrates is cost-effective and environmentally friendly and can help to overcome issues due to the genetic background.
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Affiliation(s)
- Yijing Zhan
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, 30 Puzhu South Road, Nanjing, 211816, People's Republic of China.,College of Food Science and Light Industry, Nanjing Tech University, 30 Puzhu South Road, Nanjing, 211816, People's Republic of China
| | - Ping Zhu
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, 30 Puzhu South Road, Nanjing, 211816, People's Republic of China.,College of Food Science and Light Industry, Nanjing Tech University, 30 Puzhu South Road, Nanjing, 211816, People's Republic of China
| | - Jinfeng Liang
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, 30 Puzhu South Road, Nanjing, 211816, People's Republic of China.,College of Food Science and Light Industry, Nanjing Tech University, 30 Puzhu South Road, Nanjing, 211816, People's Republic of China
| | - Zheng Xu
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, 30 Puzhu South Road, Nanjing, 211816, People's Republic of China.,College of Food Science and Light Industry, Nanjing Tech University, 30 Puzhu South Road, Nanjing, 211816, People's Republic of China
| | - Xiaohai Feng
- Nanjing Shineking Biotech Co., Ltd, Nanjing, 210061, People's Republic of China
| | - Yi Liu
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, 30 Puzhu South Road, Nanjing, 211816, People's Republic of China.,College of Food Science and Light Industry, Nanjing Tech University, 30 Puzhu South Road, Nanjing, 211816, People's Republic of China
| | - Hong Xu
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, 30 Puzhu South Road, Nanjing, 211816, People's Republic of China. .,College of Food Science and Light Industry, Nanjing Tech University, 30 Puzhu South Road, Nanjing, 211816, People's Republic of China.
| | - Sha Li
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, 30 Puzhu South Road, Nanjing, 211816, People's Republic of China. .,College of Food Science and Light Industry, Nanjing Tech University, 30 Puzhu South Road, Nanjing, 211816, People's Republic of China.
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14
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Karauzum H, Updegrove TB, Kong M, Wu IL, Datta SK, Ramamurthi KS. Vaccine display on artificial bacterial spores enhances protective efficacy against Staphylococcus aureus infection. FEMS Microbiol Lett 2019; 365:5061626. [PMID: 30084923 DOI: 10.1093/femsle/fny190] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Accepted: 07/27/2018] [Indexed: 12/20/2022] Open
Abstract
Spores of Bacillus subtilis are encased in a protein coat composed of ∼80 different proteins. Recently, we reconstituted the basement layer of the coat, composed of two structural proteins (SpoVM and SpoIVA) around spore-sized silica beads encased in a lipid bilayer, to create synthetic spore-like particles termed 'SSHELs'. We demonstrated that SSHELs could display thousands of copies of proteins and small molecules of interest covalently linked to SpoIVA. In this study, we investigated the efficacy of SSHELs in delivering vaccines. We show that intramuscular vaccination of mice with undecorated one micron-diameter SSHELs elicited an antibody response against SpoIVA. We further demonstrate that SSHELs covalently modified with a catalytically inactivated staphylococcal alpha toxin variant (HlaH35L), without an adjuvant, resulted in improved protection against Staphylococcus aureus infection in a bacteremia model as compared to vaccination with the antigen alone. Although vaccination with either HlaH35L or HlaH35L conjugated to SSHELs similarly elicited the production of neutralizing antibodies to Hla, we found that a subset of memory T cells was differentially activated when the antigen was delivered on SSHELs. We propose that the particulate nature of SSHELs elicits a more robust immune response to the vaccine that results in superior protection against subsequent S. aureus infection.
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Affiliation(s)
- Hatice Karauzum
- Laboratory of Clinical Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, 9000 Rockville Pike, Bethesda, MD 20892, USA
| | - Taylor B Updegrove
- Laboratory of Molecular Biology, National Cancer Institute, National Institutes of Health, 37 Convent Drive, Bethesda, MD 20892, USA
| | - Minsuk Kong
- Laboratory of Molecular Biology, National Cancer Institute, National Institutes of Health, 37 Convent Drive, Bethesda, MD 20892, USA
| | - I-Lin Wu
- Laboratory of Molecular Biology, National Cancer Institute, National Institutes of Health, 37 Convent Drive, Bethesda, MD 20892, USA
| | - Sandip K Datta
- Laboratory of Clinical Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, 9000 Rockville Pike, Bethesda, MD 20892, USA
| | - Kumaran S Ramamurthi
- Laboratory of Molecular Biology, National Cancer Institute, National Institutes of Health, 37 Convent Drive, Bethesda, MD 20892, USA
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15
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Feng SY, Liang GF, Xu ZS, Li AF, Du JX, Song GN, Ren SY, Yang YL, Jiang G. Meta-analysis of antiviral protection of white spot syndrome virus vaccine to the shrimp. FISH & SHELLFISH IMMUNOLOGY 2018; 81:260-265. [PMID: 30010021 DOI: 10.1016/j.fsi.2018.07.023] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Revised: 07/09/2018] [Accepted: 07/11/2018] [Indexed: 06/08/2023]
Abstract
Currently, white spot syndrome virus (WSSV) is one of the most serious pathogens that impacts shrimp farming around the world. A WSSV vaccine provides a significant protective benefit to the host shrimp. Although various types of vaccines against WSSV have emerged, the immune effects among them were not compared, and it remains unclear which type of vaccine has the strongest protective effect. Meanwhile, due to the lack of effective routes of administration and immunization programs, WSSV vaccines have been greatly limited in the actual shrimp farming. To answer these questions, this study conducted a comprehensive meta-analysis over dozens of studies and compared all types WSSV vaccines, which include sub-unit protein vaccines, whole virus inactivated vaccines, DNA vaccines and RNA-based vaccines. The results showed that the RNA-based vaccine had the highest protection rate over the other three types of vaccines. Among the various sub-unit protein vaccines, VP26 vaccine had the best protective effects than other sub-unit protein vaccines. Moreover, this study demonstrated that vaccines expressed in eukaryotic hosts had higher protection rates than that of prokaryotic systems. Among the three immunization modes (oral administration, immersion and injection) used in monovalent protein vaccines, oral administration had the highest protection rate. In natural conditions, shrimp are mostly infected by the virus orally. These results provide a guide for exploration of a novel WSSV vaccine and help facilitate the application of WSSV vaccines in shrimp farming.
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Affiliation(s)
- Shu-Ying Feng
- Medical College, Henan University of Science and Technology, Luoyang, Henan, 471023, China
| | - Gao-Feng Liang
- Medical College, Henan University of Science and Technology, Luoyang, Henan, 471023, China
| | - Zheng-Shun Xu
- Medical College, Henan University of Science and Technology, Luoyang, Henan, 471023, China
| | - Ai-Fang Li
- Medical College, Henan University of Science and Technology, Luoyang, Henan, 471023, China
| | - Jing-Xia Du
- Medical College, Henan University of Science and Technology, Luoyang, Henan, 471023, China
| | - Guan-Nan Song
- Medical College, Henan University of Science and Technology, Luoyang, Henan, 471023, China
| | - Shai-Yu Ren
- Medical College, Henan University of Science and Technology, Luoyang, Henan, 471023, China
| | - Yu-Lin Yang
- Medical College, Henan University of Science and Technology, Luoyang, Henan, 471023, China
| | - Guanglong Jiang
- Center for Computational Biology and Bioinformatics, Indiana University School of Medicine, IN, 46202, USA; Department of BioHealth Informatics, Indiana University-Purdue University Indianapolis, IN, 46202, USA.
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16
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Hoelzer K, Bielke L, Blake DP, Cox E, Cutting SM, Devriendt B, Erlacher-Vindel E, Goossens E, Karaca K, Lemiere S, Metzner M, Raicek M, Collell Suriñach M, Wong NM, Gay C, Van Immerseel F. Vaccines as alternatives to antibiotics for food producing animals. Part 2: new approaches and potential solutions. Vet Res 2018; 49:70. [PMID: 30060759 PMCID: PMC6066917 DOI: 10.1186/s13567-018-0561-7] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Accepted: 12/22/2017] [Indexed: 12/22/2022] Open
Abstract
Vaccines and other alternative products are central to the future success of animal agriculture because they can help minimize the need for antibiotics by preventing and controlling infectious diseases in animal populations. To assess scientific advancements related to alternatives to antibiotics and provide actionable strategies to support their development, the United States Department of Agriculture, with support from the World Organisation for Animal Health, organized the second International Symposium on Alternatives to Antibiotics. It focused on six key areas: vaccines; microbial-derived products; non-nutritive phytochemicals; immune-related products; chemicals, enzymes, and innovative drugs; and regulatory pathways to enable the development and licensure of alternatives to antibiotics. This article, the second part in a two-part series, highlights new approaches and potential solutions for the development of vaccines as alternatives to antibiotics in food producing animals; opportunities, challenges and needs for the development of such vaccines are discussed in the first part of this series. As discussed in part 1 of this manuscript, many current vaccines fall short of ideal vaccines in one or more respects. Promising breakthroughs to overcome these limitations include new biotechnology techniques, new oral vaccine approaches, novel adjuvants, new delivery strategies based on bacterial spores, and live recombinant vectors; they also include new vaccination strategies in-ovo, and strategies that simultaneously protect against multiple pathogens. However, translating this research into commercial vaccines that effectively reduce the need for antibiotics will require close collaboration among stakeholders, for instance through public–private partnerships. Targeted research and development investments and concerted efforts by all affected are needed to realize the potential of vaccines to improve animal health, safeguard agricultural productivity, and reduce antibiotic consumption and resulting resistance risks.
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Affiliation(s)
- Karin Hoelzer
- The Pew Charitable Trusts, 901 E Street NW, Washington, DC, 20004, USA.
| | - Lisa Bielke
- Ohio Agriculture and Research Development Center, Animal Sciences, Ohio State University, 202 Gerlaugh Hall, 1680 Madison Ave., Wooster, OH, 44691, USA
| | - Damer P Blake
- Pathobiology and Population Sciences, Royal Veterinary College, University of London, Hawkshead Lane, North Mymms, Hertfordshire, AL9 7TA, UK
| | - Eric Cox
- Department of Virology, Parasitology and Immunology, Faculty of Veterinary Medicine, Ghent University, Salsiburylaan 133, 9820, Merelbeke, Belgium
| | - Simon M Cutting
- School of Biological Sciences, Royal Holloway University of London, Egham, Surrey, TW20 0EX, UK
| | - Bert Devriendt
- Department of Virology, Parasitology and Immunology, Faculty of Veterinary Medicine, Ghent University, Salsiburylaan 133, 9820, Merelbeke, Belgium
| | - Elisabeth Erlacher-Vindel
- Science and New Technologies Department, World Organisation for Animal Health (OIE), 12 Rue de Prony, 75017, Paris, France
| | - Evy Goossens
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Salsiburylaan 133, 9820, Merelbeke, Belgium
| | - Kemal Karaca
- Elanco Animal Health, 2500 Innovation Way, Greenfield, IN, USA
| | | | - Martin Metzner
- RIPAC-LABOR GmbH, Am Mühlenberg 11, 14476, Potsdam, Germany
| | - Margot Raicek
- Science and New Technologies Department, World Organisation for Animal Health (OIE), 12 Rue de Prony, 75017, Paris, France
| | | | - Nora M Wong
- The Pew Charitable Trusts, 901 E Street NW, Washington, DC, 20004, USA
| | - Cyril Gay
- Office of National Programs, Agricultural Research Service, USDA, Sunnyside Ave, 5601, Beltsville, MD, USA
| | - Filip Van Immerseel
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Salsiburylaan 133, 9820, Merelbeke, Belgium
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17
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Chang YH, Kumar R, Ng TH, Wang HC. What vaccination studies tell us about immunological memory within the innate immune system of cultured shrimp and crayfish. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2018; 80:53-66. [PMID: 28279805 DOI: 10.1016/j.dci.2017.03.003] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Revised: 03/03/2017] [Accepted: 03/04/2017] [Indexed: 06/06/2023]
Abstract
The possibility of immunological memory in invertebrates is a topic that has recently attracted a lot of attention. Today, even vertebrates are known to exhibit innate immune responses that show memory-like properties, and since these responses are triggered by cells that are involved in the innate immune system, it seems that immune specificity and immune memory do not necessarily require the presence of B cells and T cells after all. This kind of immune response has been called "immune priming" or "trained immunity". In this report, we review recent observations and our current understanding of immunological memory within the innate immune system in cultured shrimp and crayfish after vaccination with live vaccine, killed vaccine and subunit vaccines. We also discuss the possible mechanisms involved in this immune response.
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Affiliation(s)
- Yu-Hsuan Chang
- Department of Biotechnology and Bioindustry Sciences, College of Bioscience and Biotechnology, National Cheng Kung University, Tainan, Taiwan, ROC
| | - Ramya Kumar
- Department of Biotechnology and Bioindustry Sciences, College of Bioscience and Biotechnology, National Cheng Kung University, Tainan, Taiwan, ROC
| | - Tze Hann Ng
- Department of Biotechnology and Bioindustry Sciences, College of Bioscience and Biotechnology, National Cheng Kung University, Tainan, Taiwan, ROC
| | - Han-Ching Wang
- Department of Biotechnology and Bioindustry Sciences, College of Bioscience and Biotechnology, National Cheng Kung University, Tainan, Taiwan, ROC.
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18
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Mingmongkolchai S, Panbangred W. Bacillus probiotics: an alternative to antibiotics for livestock production. J Appl Microbiol 2018; 124:1334-1346. [PMID: 29316021 DOI: 10.1111/jam.13690] [Citation(s) in RCA: 160] [Impact Index Per Article: 26.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Revised: 12/16/2017] [Accepted: 12/29/2017] [Indexed: 12/16/2022]
Abstract
The use of probiotics as feed supplements in animal production has increased considerably over the last decade, particularly since the ban on antibiotic growth promoters in the livestock sector. Several Bacillus sp. are attractive for use as probiotic supplements in animal feed due to their ability to produce spores. Their heat stability and ability to survive the low pH of the gastric barrier represent an advantage over other probiotic micro-organisms. This review discusses important characteristics required for selection of Bacillus probiotic strains and summarizes the beneficial effect of Bacillus-based feed additives on animal production. Although the mechanism of action of Bacillus probiotics has not been fully elucidated, they are effective in improving the growth, survival and health status of terrestrial and aquatic livestock. Bacillus strains also have utility in bioremediation and can reduce nitrogenous waste, thereby improving environmental conditions and water quality. Finally, recent innovative approaches for using Bacillus spores in various applications are discussed.
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Affiliation(s)
- S Mingmongkolchai
- Department of Biotechnology, Faculty of Science, Mahidol University, Bangkok, Thailand.,Faculty of Science, Mahidol University-Osaka University Collaborative Research Center for Bioscience and Biotechnology (MU-OU:CRC), Mahidol University, Bangkok, Thailand
| | - W Panbangred
- Department of Biotechnology, Faculty of Science, Mahidol University, Bangkok, Thailand.,Faculty of Science, Mahidol University-Osaka University Collaborative Research Center for Bioscience and Biotechnology (MU-OU:CRC), Mahidol University, Bangkok, Thailand
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19
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Hosseini S, Curilovs A, Cutting SM. Biological Containment of Genetically Modified Bacillus subtilis. Appl Environ Microbiol 2018; 84:e02334-17. [PMID: 29150519 PMCID: PMC5772228 DOI: 10.1128/aem.02334-17] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Accepted: 11/15/2017] [Indexed: 11/20/2022] Open
Abstract
Genetic manipulation of bacterial spores of the genus Bacillus has shown potential for vaccination and for delivery of drugs or enzymes. Remarkably, proteins displayed on the spore surface retain activity and generally are not degraded. The heat stability of spores, coupled with their desiccation resistance, makes them suitable for delivery to humans or to animals by the oral route. Despite these attributes, one regulatory obstacle has remained regarding the fate of recombinant spores shed into the environment as viable spores. We have addressed the biological containment of GMO spores by utilizing the concept of a thymineless death, a phenomenon first reported 6 decades ago. Using Bacillus subtilis, we have inserted chimeric genes in the two thymidylate synthase genes, thyA and thyB, using a two-step process. Insertion is made first at thyA and then at thyB whereby resistance to trimethoprim enables selection of recombinants. Importantly, this method requires introduction of no new antibiotic resistance genes. Recombinant spores have a strict dependence on thymine (or thymidine), and in its absence cells lyse and die. Insertions are stable with no evidence for suppression or reversion. Using this system, we have successfully created a number of spore vaccines as well as spores displaying active enzymes.IMPORTANCE Genetic manipulation of bacterial spores offers a number of exciting possibilities for public and animal health, including their use as heat-stable vehicles for delivering vaccines or enzymes. Despite this, one remaining problem is the fate of recombinant spores released into the environment where they could survive in a dormant form indefinitely. We describe a solution whereby, following genetic manipulation, the bacterium is rendered dependent on thymine. As a consequence, spores if released would produce bacteria unable to survive, and they would exhibit a thymineless death due to rapid cessation of metabolism. The method we describe has been validated using a number of exemplars and solves a critical problem for containing spores of GMOs in the environment.
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Affiliation(s)
- Siamand Hosseini
- School of Biological Sciences, Royal Holloway University of London, Egham, Surrey, United Kingdom
| | - Alex Curilovs
- SporeGen Ltd., Bourne Labs, Royal Holloway University of London, Egham, Surrey, United Kingdom
| | - Simon M Cutting
- School of Biological Sciences, Royal Holloway University of London, Egham, Surrey, United Kingdom
- SporeGen Ltd., Bourne Labs, Royal Holloway University of London, Egham, Surrey, United Kingdom
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20
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Ullah J, Chen H, Vastermark A, Jia J, Wu B, Ni Z, Le Y, Wang H. Impact of orientation and flexibility of peptide linkers on T. maritima lipase Tm1350 displayed on Bacillus subtilis spores surface using CotB as fusion partner. World J Microbiol Biotechnol 2017; 33:166. [PMID: 28822027 DOI: 10.1007/s11274-017-2327-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Accepted: 07/26/2017] [Indexed: 11/27/2022]
Abstract
Fusion protein construction often requires peptide linkers for prolonged conformation, extended stability and enzyme activity. In this study a series of fusion between Thermotoga maritima lipase Tm1350 and Bacillus subtillis coat protein CotB, comprising of several peptide linkers, with different length, flexibility and orientations were constructed. Effects of temperature, pH and chemicals were examined, on the activity of displayed enzyme. The fusion protein with longer flexible linkers L9 [(GGGGS)4] and L7 (GGGGS-GGGGS-EAAAK-EAAAK-GGGGS-GGGGS) possess 1.29 and 1.16-fold higher activity than the original, under optimum temperature and pH respectively. Moreover, spore surface displaying Tm1350 with L3 (EAAAK-GGGGS) and L9 ((GGGGS)4) showed extended thermostably, maintaining 1.40 and 1.35-fold higher activity than the original respectively, at 80 °C after 5 h of incubation. The enzyme activity of linkers with different orientation, including L5, L6 and L7 was determined, where L7 maintained 1.05 and 1.27-fold higher activity than L5 and L6. Effect of 0.1% proteinase K, bromelain, 20% ethanol and 30% methanol was investigated. Linkers with appropriate Glycine residues (flexible) showed higher activity than Alanine residues (rigid). The activity of the displayed enzyme can be improved by maintaining orientation and flexibility of peptide linkers, to evaluate high activity and stability in industrial processes.
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Affiliation(s)
- Jawad Ullah
- Institute of Life Sciences, Jiangsu University, Zhenjiang, 212000, Jiangsu, People's Republic of China
| | - Huayou Chen
- Institute of Life Sciences, Jiangsu University, Zhenjiang, 212000, Jiangsu, People's Republic of China.
- National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, People's Republic of China.
| | - Ake Vastermark
- Division of Biological Sciences, University of California at San Diego, La Jolla, CA, 92093‑0116, USA
- Nitech, Showa-ku, Nagoya, 466-8555, Japan
| | - Jinru Jia
- Institute of Life Sciences, Jiangsu University, Zhenjiang, 212000, Jiangsu, People's Republic of China
| | - Bangguo Wu
- Institute of Life Sciences, Jiangsu University, Zhenjiang, 212000, Jiangsu, People's Republic of China
| | - Zhong Ni
- Institute of Life Sciences, Jiangsu University, Zhenjiang, 212000, Jiangsu, People's Republic of China
| | - Yilin Le
- Institute of Life Sciences, Jiangsu University, Zhenjiang, 212000, Jiangsu, People's Republic of China
| | - Hongcheng Wang
- Institute of Life Sciences, Jiangsu University, Zhenjiang, 212000, Jiangsu, People's Republic of China
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21
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Recent progress in the development of white spot syndrome virus vaccines for protecting shrimp against viral infection. Arch Virol 2017. [DOI: 10.1007/s00705-017-3450-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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22
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Pham KC, Tran HTT, Van Doan C, Le PH, Van Nguyen AT, Nguyen HA, Hong HA, Cutting SM, Phan TN. Protection of Penaeus monodon against white spot syndrome by continuous oral administration of a low concentration of Bacillus subtilis spores expressing the VP28 antigen. Lett Appl Microbiol 2017; 64:184-191. [PMID: 27992657 DOI: 10.1111/lam.12708] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Revised: 10/19/2016] [Accepted: 12/12/2016] [Indexed: 11/28/2022]
Abstract
In this study, Bacillus subtilis spores expressing a chimeric protein, CotB-VP28, were used as a probiotic vaccine to protect black tiger shrimps (Penaeus monodon) against white spot syndrome virus (WSSV) infection. Oral administration of pellets coated with CotB-VP28 spores (at ≥1 × 109 CFU per g pellet) to shrimps induced immune-relating phenoloxydase activity (PO) in shrimps after 14 days of feeding (prior challenge) and at day 3 post challenge (1·26 and 1·70 fold increase respectively). A 75% protection rate was obtained by continuous feeding of the spore-coated pellets at ≥1 × 109 CFU per g for 14 days prior to WSSV challenge and during all the postchallenge period. Even when the amount of CotB-VP28 spores in feed pellets was reduced down to ≥5 × 107 CFU per g and ≥1 × 106 CFU per g, relatively high protection rates of 70 and 67·5%, respectively, were still obtained. By contrast, feeding pellets without spores (untreated group) and with naked spores (PY79 group) at ≥1 × 109 CFU per g could not protect shrimps against WSSV. These data suggest that supplementation of CotB-VP28 spores at low dose of ≥1 × 106 CFU per g could be effective as a prophylactic treatment of WSS for black tiger shrimps. SIGNIFICANCE AND IMPACT OF THE STUDY This study reports the protective efficacy of Bacillus subtilis CotB-VP28 spores on black tiger shrimps (Penaeus monodon) against white spot syndrome virus infection. Oral administration of pellets coated with CotB-VP28 spores (≥1 × 109 CFU per g) conferred 75% protection after white spot syndrome virus challenge. Even after reducing CotB-VP28 spores in feed pellets to ≥1 × 106 CFU per g, 67·5% protections was still obtained. These data indicate that supplementation of CotB-VP28 spores at a low dose of ≥1 × 106 CFU per g could be effective in prophylaxis against white spot syndrome in black tiger shrimps.
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Affiliation(s)
- K-C Pham
- Key Laboratory of Enzyme and Protein Technology, VNU University of Science, Hanoi, Vietnam.,Department of Biochemistry, Institute of New Technology, Hanoi, Vietnam
| | - H T T Tran
- Faculty of Aquaculture, Can Tho University, Can Tho, Vietnam
| | - C Van Doan
- Southern Monitoring Center for Aquaculture Environment and Epidemic, Research Institute for Aquaculture No. 2, Ho Chi Minh City, Vietnam
| | - P H Le
- Southern Monitoring Center for Aquaculture Environment and Epidemic, Research Institute for Aquaculture No. 2, Ho Chi Minh City, Vietnam
| | - A T Van Nguyen
- Key Laboratory of Enzyme and Protein Technology, VNU University of Science, Hanoi, Vietnam
| | - H A Nguyen
- ANABIO Research & Development JSC, Hanoi, Vietnam
| | - H A Hong
- School of Biological Sciences, Royal Holloway University of London, Egham, UK
| | - S M Cutting
- School of Biological Sciences, Royal Holloway University of London, Egham, UK
| | - T-N Phan
- Key Laboratory of Enzyme and Protein Technology, VNU University of Science, Hanoi, Vietnam
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23
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Wang H, Wang Y, Yang R. Recent progress in Bacillus subtilis spore-surface display: concept, progress, and future. Appl Microbiol Biotechnol 2017; 101:933-949. [PMID: 28062973 DOI: 10.1007/s00253-016-8080-9] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Revised: 12/18/2016] [Accepted: 12/19/2016] [Indexed: 12/16/2022]
Abstract
With the increased knowledge on spore structure and advances in biotechnology engineering, the newly developed spore-surface display system confers several inherent advantages over other microbial cell-surface display systems including enhanced stability and high safety. Bacillus subtilis is the most commonly used Bacillus species for spore-surface display. The expression of heterologous antigen or protein on the surface of B. subtilis spores has now been practiced for over a decade with noteworthy success. As an update and supplement to other previous reviews, we comprehensively summarize recent studies in the B. subtilis spore-surface display technique. We focus on its benefits as well as the critical factors affecting its display efficiency and offer suggestions for the future success of this field.
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Affiliation(s)
- He Wang
- Jiyang College, Zhejiang Agriculture and Forestry University, Zhuji, Zhejiang, 311800, China.
| | - Yunxiang Wang
- Jiyang College, Zhejiang Agriculture and Forestry University, Zhuji, Zhejiang, 311800, China
| | - Ruijin Yang
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, China
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Tang M, Sun X, Zhang S, Wan J, Li L, Ni H. Improved catalytic and antifungal activities ofBacillus thuringiensiscells with surface display of Chi9602ΔSP. J Appl Microbiol 2016; 122:106-118. [DOI: 10.1111/jam.13333] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Revised: 10/24/2016] [Accepted: 10/24/2016] [Indexed: 11/28/2022]
Affiliation(s)
- M. Tang
- Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources; Faculty of Life Science; Hubei University; Wuhan Hubei China
| | - X. Sun
- Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources; Faculty of Life Science; Hubei University; Wuhan Hubei China
- State Key Laboratory of Agricultural Microbiology; Huazhong Agricultural University; Wuhan Hubei China
| | - S. Zhang
- Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources; Faculty of Life Science; Hubei University; Wuhan Hubei China
| | - J. Wan
- Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources; Faculty of Life Science; Hubei University; Wuhan Hubei China
| | - L. Li
- State Key Laboratory of Agricultural Microbiology; Huazhong Agricultural University; Wuhan Hubei China
| | - H. Ni
- Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources; Faculty of Life Science; Hubei University; Wuhan Hubei China
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Sinnasamy S, Noordin NM, MacRae TH, Bin Abdullah MI, Bossier P, Wahid MEBA, Noriaki A, Sung YY. Ingestion of food pellets containing Escherichia coli overexpressing the heat-shock protein DnaK protects Penaeus vannamei (Boone) against Vibrio harveyi (Baumann) infection. JOURNAL OF FISH DISEASES 2016; 39:577-584. [PMID: 26132358 DOI: 10.1111/jfd.12390] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2015] [Revised: 04/16/2015] [Accepted: 04/18/2015] [Indexed: 06/04/2023]
Abstract
Feeding aquatic animals with bacterial encapsulated heat-shock proteins (Hsps) is potentially a new method to combat vibriosis, an important disease affecting aquatic animals used in aquaculture. Food pellets comprised of shrimp and containing Escherichia coli overexpressing either DnaK-DnaJ-GrpE, the prokaryotic equivalents of Hsp70-Hsp40-Hsp20, or only DnaK were fed to juveniles of the white leg shrimp Penaeus vannamei, and protection against pathogenic Vibrio harveyi was determined. Maintaining pellets at different temperatures for varying lengths of time reduced the number of live adhering E. coli, as did contact with sea water, demonstrating that storage and immersion adversely affected bacterial survival and attachment to pellets. Feeding P. vannamei with E. coli did not compromise their survival, indicating that the bacteria were not pathogenic to shrimp. Feeding P. vannamei with pellets containing bacteria overproducing DnaK (approximately 60 cells g(-1) pellets) boosted P. vannamei survival twofold against V. harveyi, suggesting that DnaK plays a role in Vibrio tolerance. Pellets containing DnaK were effective in providing protection to P. vannamei for up to 2 weeks before loss of viability and that DnaK encapsulated by these bacteria enhanced shrimp resistance against Vibrio infection.
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Affiliation(s)
- S Sinnasamy
- Institute of Marine Biotechnology, University Malaysia Terengganu (UMT), Kuala Terengganu, Malaysia
| | - N Mat Noordin
- School of Fisheries and Aquaculture Sciences, University Malaysia Terengganu (UMT), Kuala Terengganu, Malaysia
| | - T H MacRae
- Department of Biology, Dalhousie University, Halifax, NS, Canada
| | - M Ikhwanuddin Bin Abdullah
- School of Fisheries and Aquaculture Sciences, University Malaysia Terengganu (UMT), Kuala Terengganu, Malaysia
| | - P Bossier
- Laboratory of Aquaculture & Artemia Reference Center, Faculty of Bioscience Engineering, Ghent University, Gent, Belgium
| | - M E Bin Abdul Wahid
- Institute of Marine Biotechnology, University Malaysia Terengganu (UMT), Kuala Terengganu, Malaysia
- School of Fisheries and Aquaculture Sciences, University Malaysia Terengganu (UMT), Kuala Terengganu, Malaysia
| | - A Noriaki
- Agrobest Malaysia Sdn. Bhd, Pekan, Pahang, Malaysia
| | - Y Y Sung
- Institute of Marine Biotechnology, University Malaysia Terengganu (UMT), Kuala Terengganu, Malaysia
- School of Fisheries and Aquaculture Sciences, University Malaysia Terengganu (UMT), Kuala Terengganu, Malaysia
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Chen H, Chen Z, Ni Z, Tian R, Zhang T, Jia J, Chen K, Yang S. Display of Thermotoga maritima MSB8 nitrilase on the spore surface of Bacillus subtilis using out coat protein CotG as the fusion partner. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.molcatb.2015.11.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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Chen H, Zhang T, Sun T, Ni Z, Le Y, Tian R, Chen Z, Zhang C. Clostridium thermocellum Nitrilase Expression and Surface Display on Bacillus subtilis Spores. J Mol Microbiol Biotechnol 2015; 25:381-7. [DOI: 10.1159/000441642] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2015] [Accepted: 09/29/2015] [Indexed: 11/19/2022] Open
Abstract
Nitrilases are an important class of industrial enzymes. They require mild reaction conditions and are highly efficient and environmentally friendly, so they are used to catalyze the synthesis of carboxylic acid from nitrile, a process considered superior to conventional chemical syntheses. Nitrilases should be immobilized to overcome difficulties in recovery after the reaction and to stabilize the free enzyme. The nitrilase from<i> Clostridium thermocellum</i> was expressed, identified and displayed on the surface of <i>Bacillus subtilis </i>spores by using the spore coat protein G of <i>B. subtilis </i>as an anchoring motif. In a free state, the recombinant nitrilase catalyzed the conversion of 3-cyanopyridine to niacin and displayed maximum catalytic activity (8.22 units/mg protein) at 40°C and pH 7.4. SDS-PAGE and Western blot were used to confirm nitrilase display. Compared with the free enzyme, the spore-immobilized nitrilase showed a higher tolerance for adverse environmental conditions. After the reaction, recombinant spores were recovered via centrifugation and reused 3 times to catalyze the conversion of 3-cyanopyridine with 75.3% nitrilase activity. This study demonstrates an effective means of nitrilase immobilization via spore surface display, which can be applied in biological processes or conversion.
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Abstract
ABSTRACT
A variety of bioactive peptides and proteins have been successfully displayed on the surface of recombinant spores of
Bacillus subtilis
and other sporeformers. In most cases, spore display has been achieved by stably anchoring the foreign molecules to endogenous surface proteins or parts of them. Recombinant spores have been proposed for a large number of potential applications ranging from oral vaccine vehicles to bioremediation tools, and including biocatalysts, probiotics for animal or human use, as well as the generation and screening of mutagenesis libraries. In addition, a nonrecombinant approach has been recently developed to adsorb antigens and enzymes on the spore surface. This nonrecombinant approach appears particularly well suited for applications involving the delivery of active molecules to human or animal mucosal surfaces. Both the recombinant and nonrecombinant spore display systems have a number of advantages over cell- or phage-based systems. The stability, safety of spores of several bacterial species, and amenability to laboratory manipulations, together with the lack of some constraints limiting the use of other systems, make the spore a highly efficient platform to display heterologous proteins.
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Nguyen AT, Pham CK, Pham HT, Pham HL, Nguyen AH, Dang LT, Huynh HA, Cutting SM, Phan TN. Bacillus subtilisspores expressing the VP28 antigen: a potential oral treatment to protectLitopenaeus vannameiagainst white spot syndrome. FEMS Microbiol Lett 2014; 358:202-8. [DOI: 10.1111/1574-6968.12546] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2014] [Revised: 07/17/2014] [Accepted: 07/19/2014] [Indexed: 12/29/2022] Open
Affiliation(s)
- Anh T.V. Nguyen
- Key Laboratory of Enzyme and Protein Technology; VNU University of Science; Hanoi Vietnam
| | - Cuong K. Pham
- Key Laboratory of Enzyme and Protein Technology; VNU University of Science; Hanoi Vietnam
| | - Huong T.T. Pham
- Key Laboratory of Enzyme and Protein Technology; VNU University of Science; Hanoi Vietnam
| | - Hang L. Pham
- Key Laboratory of Enzyme and Protein Technology; VNU University of Science; Hanoi Vietnam
| | | | - Lua T. Dang
- Center for Environment and Disease Monitoring in Aquaculture; Research Institute for Aquaculture No.1; Bac Ninh Vietnam
| | - Hong A. Huynh
- School of Biological Sciences; Royal Holloway University of London; Egham UK
| | - Simon M. Cutting
- School of Biological Sciences; Royal Holloway University of London; Egham UK
| | - Tuan-Nghia Phan
- Key Laboratory of Enzyme and Protein Technology; VNU University of Science; Hanoi Vietnam
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Liu Y, Li S, Xu H, Wu L, Xu Z, Liu J, Feng X. Efficient production of D-tagatose using a food-grade surface display system. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:6756-6762. [PMID: 24979201 DOI: 10.1021/jf501937j] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
D-tagatose, a functional sweetener, is commonly transformed from D-galactose by L-arabinose isomerase (L-AI). In this study, a novel type of biocatalyst, L-AI from Lactobacillus fermentum CGMCC2921 displayed on the spore surface of Bacillus subtilis 168, was developed for producing D-tagatose. The anchored L-AI, exhibiting the relatively high bioactivity, suggested that the surface display system using CotX as the anchoring protein was successfully constructed. The stability of the anchored L-AI was significantly improved. Specifically, the consolidation of thermal stability representing 87% of relative activity was retained even at 80 °C for 30 min, which remarkably favored the production of D-tagatose. Under the optimal conditions, the robust spores can convert 75% D-galactose (100 g/L) into D-tagatose after 24 h, and the conversion rate remained at 56% at the third cycle. Therefore, this biocatalysis system, which could express the target enzyme on the food-grade vector, was an alternative method for the value-added production of D-tagatose.
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Affiliation(s)
- Yi Liu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Food Science and Light Industry, Nanjing University of Technology , 30 Puzhu South Road, Nanjing 211816, People's Republic of China
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Valdez A, Yepiz-Plascencia G, Ricca E, Olmos J. First Litopenaeus vannamei
WSSV 100% oral vaccination protection using CotC::Vp26 fusion protein displayed on Bacillus subtilis
spores surface. J Appl Microbiol 2014; 117:347-57. [DOI: 10.1111/jam.12550] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2014] [Revised: 04/22/2014] [Accepted: 05/06/2014] [Indexed: 11/30/2022]
Affiliation(s)
- A. Valdez
- Molecular Microbiology Laboratory; Centro de Investigación Científica y de Educación Superior de Ensenada; Ensenada México
| | - G. Yepiz-Plascencia
- Laboratorio de Biología Molecular de Organismos Acuáticos; Centro de Investigación en Alimentación y Desarrollo; Hermosillo México
| | - E. Ricca
- Department of Structural and Functional Biology; Federico II University; Naples Italy
| | - J. Olmos
- Molecular Microbiology Laboratory; Centro de Investigación Científica y de Educación Superior de Ensenada; Ensenada México
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Preparation of transgenic Dunaliella salina for immunization against white spot syndrome virus in crayfish. Arch Virol 2013; 159:519-25. [DOI: 10.1007/s00705-013-1856-7] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2013] [Accepted: 08/18/2013] [Indexed: 10/26/2022]
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Sączewski J, Hinc K, Obuchowski M, Gdaniec M. The Tandem Mannich-Electrophilic Amination Reaction: a Versatile Platform for Fluorescent Probing and Labeling. Chemistry 2013; 19:11531-5. [DOI: 10.1002/chem.201302085] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2013] [Indexed: 01/08/2023]
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Bailey M, Christoforidou Z, Lewis M. Evolution of immune systems: Specificity and autoreactivity. Autoimmun Rev 2013. [DOI: 10.1016/j.autrev.2012.10.007] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Hinc K, Iwanicki A, Obuchowski M. New stable anchor protein and peptide linker suitable for successful spore surface display in B. subtilis. Microb Cell Fact 2013; 12:22. [PMID: 23448318 PMCID: PMC3599258 DOI: 10.1186/1475-2859-12-22] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2013] [Accepted: 02/18/2013] [Indexed: 01/28/2023] Open
Abstract
Background In last decade spores have been successfully used as a surface display platform. Various peptides or proteins were displayed this way as functional enzymes or antigens. Nearly all attempts involved use of three coat proteins: CotB, CotC or CotG. Increasing knowledge of the structure of the spore coat allowed us to propose the use of other proteins whose localization in the spore envelope has been determined. We also propose the application of a new linker suitable for building fusion proteins. Results We show that a member of the outer coat, CotZ, is a good candidate as a new anchor protein useful in spore surface display. This protein allows use of relatively large passenger proteins and their efficient display on the spore surface. Analysis by Western- and dot-blotting, combined with immunofluorescence microscopy, allowed us to estimate the number of displayed fusion proteins molecules as 1.4 × 102 per spore. In addition, we present data indicating that the use of a peptide linker, which forms a stable α-helix, may greatly improve the display of anchored proteins on the spore surface. Conclusion CotZ can be used as an efficient anchor protein in the outer spore coat. Its localisation in the coat crust layer should guarantee surface display of passenger proteins. Moreover, a CotZ based fusion can tolerate relatively large passenger proteins for efficient spore surface display. In addition, to the properties of both the anchor and passenger proteins, an important issue is the nature of the linker. Here we present evidence that the linker, which forms a stable α-helix, may be crucial for successful display.
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Affiliation(s)
- Krzysztof Hinc
- Laboratory of Molecular Bacteriology, Intercollegiate Faculty of Biotechnology UG & MUG, Medical University of Gdańsk, Dębinki 1, Gdańsk 80-211, Poland
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