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Zhou Y, Lin Z, Fang J, Wang Z, Guo J, Li G, Xu Q, Jin M, Chen H, Zou J, Zhou H. The recombinant vaccine of Lactobacillus plantarum elicits immune protection against H1N1 and H9N2 influenza virus infection. Int J Biol Macromol 2024:133453. [PMID: 38942402 DOI: 10.1016/j.ijbiomac.2024.133453] [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: 05/06/2024] [Revised: 06/24/2024] [Accepted: 06/24/2024] [Indexed: 06/30/2024]
Abstract
Influenza A virus (IAV) causes annual epidemics and occasional pandemics, resulting in significant economic losses and numerous fatalities. Current vaccines, typically administered through injection, provide limited protection due to the frequent antigenic shift and drift of IAV strains. Therefore, the development of alternative broad-spectrum vaccine strategies is imperative. Lactic acid bacteria (LAB) represent promising candidates for vaccine engineering due to their low cost, high safety profile, and suitability for oral administration. In this study, we identified a strain of Lactobacillus plantarum (Lp) that is resistant to acid and bile salts and capable of colonizing the intestines of mice. Subsequently, we employed the RecE/T gene editing system to integrate headless hemagglutinins (mini-HA) into the genome of Lp, generating Lp-mini-HA-SP. Remarkably, immunization with Lp-mini-HA-SP elicited serum IgG antibody responses and conferred immune protection against H9N2 and H1N1 influenza virus challenges. Collectively, our findings offer a novel approach for the development of orally administered IAV vaccines and hold significant potential for future drug development endeavors.
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Affiliation(s)
- Yuanbao Zhou
- National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei, PR China
| | - Zhipeng Lin
- National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei, PR China
| | - Jiaqing Fang
- National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei, PR China
| | - Zhihao Wang
- National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei, PR China
| | - Jinli Guo
- National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei, PR China
| | - Guohong Li
- Wuhan Keqian Biology Co., Ltd, Wuhan, Hubei, PR China
| | - Qiaoxia Xu
- Wuhan Keqian Biology Co., Ltd, Wuhan, Hubei, PR China
| | - Meilin Jin
- National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei, PR China; Hubei Hongshan Laboratory, Wuhan, Hubei, PR China
| | - Huanchun Chen
- National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei, PR China; Frontiers Science Center for Animal Breeding and Sustainable Production, Wuhan, Hubei, PR China; Hubei Hongshan Laboratory, Wuhan, Hubei, PR China
| | - Jiahui Zou
- National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei, PR China.
| | - Hongbo Zhou
- National Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei, PR China; Frontiers Science Center for Animal Breeding and Sustainable Production, Wuhan, Hubei, PR China; Hubei Hongshan Laboratory, Wuhan, Hubei, PR China; Key Laboratory of Preventive Veterinary Medicine in Hubei Province, The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, Hubei, PR China.
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Wang C, Yang Y, Ma C, Sunkang Y, Tang S, Zhang Z, Wan X, Wei Y. Expression of β-Glucosidases from the Yak Rumen in Lactic Acid Bacteria: A Genetic Engineering Approach. Microorganisms 2023; 11:1387. [PMID: 37374889 DOI: 10.3390/microorganisms11061387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 05/18/2023] [Accepted: 05/22/2023] [Indexed: 06/29/2023] Open
Abstract
β-glucosidase derived from microorganisms has wide industrial applications. In order to generate genetically engineered bacteria with high-efficiency β-glucosidase, in this study two subunits (bglA and bglB) of β-glucosidase obtained from the yak rumen were expressed as independent proteins and fused proteins in lactic acid bacteria (Lactobacillus lactis NZ9000). The engineered strains L. lactis NZ9000/pMG36e-usp45-bglA, L. lactis NZ9000/pMG36e-usp45-bglB, and L. lactis NZ9000/pMG36e-usp45-bglA-usp45-bglB were successfully constructed. These bacteria showed the secretory expression of BglA, BglB, and Bgl, respectively. The molecular weights of BglA, BglB, and Bgl were about 55 kDa, 55 kDa, and 75 kDa, respectively. The enzyme activity of Bgl was significantly higher (p < 0.05) than that of BglA and BglB for substrates such as regenerated amorphous cellulose (RAC), sodium carboxymethyl cellulose (CMC-Na), desiccated cotton, microcrystalline cellulose, filter paper, and 1% salicin. Moreover, 1% salicin appeared to be the most suitable substrate for these three recombinant proteins. The optimum reaction temperatures and pH values for these three recombinant enzymes were 50 °C and 7.0, respectively. In subsequent studies using 1% salicin as the substrate, the enzymatic activities of BglA, BglB, and Bgl were found to be 2.09 U/mL, 2.36 U/mL, and 9.4 U/mL, respectively. The enzyme kinetic parameters (Vmax, Km, Kcat, and Kcat/Km) of the three recombinant strains were analyzed using 1% salicin as the substrate at 50 °C and pH 7.0, respectively. Under conditions of increased K+ and Fe2+ concentrations, the Bgl enzyme activity was significantly higher (p < 0.05) than the BglA and BglB enzyme activity. However, under conditions of increased Zn2+, Hg2+, and Tween20 concentrations, the Bgl enzyme activity was significantly lower (p < 0.05) than the BglA and BglB enzyme activity. Overall, the engineered lactic acid bacteria strains generated in this study could efficiently hydrolyze cellulose, laying the foundation for the industrial application of β-glucosidase.
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Affiliation(s)
- Chuan Wang
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China
- Center for Anaerobic Microbes, Institute of Biology, Gansu Academy of Sciences, Lanzhou 730000, China
| | - Yuze Yang
- Beijing Animal Husbandry Station, Beijing 100107, China
| | - Chunjuan Ma
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China
| | - Yongjie Sunkang
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China
| | - Shaoqing Tang
- Beijing Animal Husbandry Station, Beijing 100107, China
| | - Zhao Zhang
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China
| | - Xuerui Wan
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou 730070, China
| | - Yaqin Wei
- Center for Anaerobic Microbes, Institute of Biology, Gansu Academy of Sciences, Lanzhou 730000, China
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Alias NAR, Hoo WPY, Siak PY, Othman SS, Mohammed Alitheen NB, In LLA, Abdul Rahim R, Song AAL. Effect of Secretion Efficiency of Mutant KRAS Neoantigen by Lactococcus lactis on the Immune Response of a Mucosal Vaccine Delivery Vehicle Targeting Colorectal Cancer. Int J Mol Sci 2023; 24:ijms24108928. [PMID: 37240273 DOI: 10.3390/ijms24108928] [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: 03/31/2023] [Revised: 05/06/2023] [Accepted: 05/09/2023] [Indexed: 05/28/2023] Open
Abstract
Colorectal cancer (CRC) is often caused by mutations in the KRAS oncogene, making KRAS neoantigens a promising vaccine candidate for immunotherapy. Secreting KRAS antigens using live Generally Recognized as Safe (GRAS) vaccine delivery hosts such as Lactococcus lactis is deemed to be an effective strategy in inducing specific desired responses. Recently, through the engineering of a novel signal peptide SPK1 from Pediococcus pentosaceus, an optimized secretion system was developed in the L. lactis NZ9000 host. In this study, the potential of the L. lactis NZ9000 as a vaccine delivery host for the production of two KRAS oncopeptides (mutant 68V-DT and wild-type KRAS) through the use of the signal peptide SPK1 and its mutated derivative (SPKM19) was investigated. The expression and secretion efficiency analyses of KRAS peptides from L. lactis were performed in vitro and in vivo in BALB/c mice. Contradictory to our previous study using the reporter staphylococcal nuclease (NUC), the yield of secreted KRAS antigens mediated by the target mutant signal peptide SPKM19 was significantly lower (by ~1.3-folds) compared to the wild-type SPK1. Consistently, a superior elevation of IgA response against KRAS aided by SPK1 rather than mutant SPKM19 was observed. Despite the lower specific IgA response for SPKM19, a positive IgA immune response from mice intestinal washes was successfully triggered following immunization. Size and secondary conformation of the mature proteins are suggested to be the contributing factors for these discrepancies. This study proves the potential of L. lactis NZ9000 as a host for oral vaccine delivery due to its ability to evoke the desired mucosal immune response in the gastrointestinal tract of mice.
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Affiliation(s)
- Nur Aqlili Riana Alias
- Department of Cell and Molecular Biology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang 43400, Malaysia
| | - Winfrey Pui Yee Hoo
- Department of Biochemistry and Molecular Biology, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC 3800, Australia
| | - Pui Yan Siak
- Faculty of Medicine and Health Sciences, UCSI University, Bandar Springhill, Port Dickson 71010, Malaysia
| | - Siti Sarah Othman
- Department of Cell and Molecular Biology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang 43400, Malaysia
- UPM-MAKNA Cancer Research Laboratory, Institute of Bioscience, Universiti Putra Malaysia, Serdang 43400, Malaysia
| | - Noorjahan Banu Mohammed Alitheen
- Department of Cell and Molecular Biology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang 43400, Malaysia
- UPM-MAKNA Cancer Research Laboratory, Institute of Bioscience, Universiti Putra Malaysia, Serdang 43400, Malaysia
| | - Lionel Lian Aun In
- Department of Biotechnology, Faculty of Applied Sciences, UCSI University Kuala Lumpur, Cheras 56000, Malaysia
| | - Raha Abdul Rahim
- Department of Cell and Molecular Biology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang 43400, Malaysia
- National Institutes of Biotechnology Malaysia, Argo-Biotechnology Institute Malaysia Complex, Serdang 43400, Malaysia
| | - Adelene Ai-Lian Song
- Department of Microbiology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang 43400, Malaysia
- Laboratory of Vaccine and Biomolecules, Institute of Bioscience, Universiti Putra Malaysia, Serdang 43400, Malaysia
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Optimization of Signal Peptide via Site-Directed Mutagenesis for Enhanced Secretion of Heterologous Proteins in Lactococcus lactis. Int J Mol Sci 2022; 23:ijms231710044. [PMID: 36077441 PMCID: PMC9456127 DOI: 10.3390/ijms231710044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 08/24/2022] [Accepted: 08/26/2022] [Indexed: 11/26/2022] Open
Abstract
Secretion efficiency of heterologous proteins in the Generally Regarded As Safe (GRAS) Lactococcus lactis is often reported to be insufficiently low due to limitations such as poor targeting and translocation by the signal peptide or degradation by the host proteases. In this study, the secretion efficiency in the host was enhanced through the utilization of a heterologous signal peptide (SP) SPK1 of Pediococcus pentosaceus. The SPK1 was subjected to site-directed mutations targeting its tripartite N-, H-, and C-domains, and the effect on secretion efficiency as compared to the wild-type SPK1 and native lactococcal USP45 was determined on a reporter nuclease (NUC) of Staphylococcus aureus. A Fluorescence Resonance Energy Transfer (FRET) analysis indicated that four out of eight SPK1 variants successfully enhanced the secretion of NUC, with the best mutant, SPKM19, showing elevated secretion efficiency up to 88% (or by 1.4-fold) and an improved secretion activity yield of 0.292 ± 0.122 U/mL (or by 1.7-fold) compared to the wild-type SPK1. Modifications of the SPK1 at the cleavage site C-domain region had successfully augmented the secretion efficiency. Meanwhile, mutations in the H-domain region had resulted in a detrimental effect on the NUC secretion. The development of heterologous SPs with better efficacy than the USP45 has been demonstrated in this study for enhanced secretion of heterologous production and mucosal delivery applications in the lactococcal host.
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Zhang H, Dong M, Yuan S, Jin W. Oral glucagon-like peptide 1 analogue ameliorates glucose intolerance in db/db mice. Biotechnol Lett 2022; 44:1149-1162. [PMID: 36006576 DOI: 10.1007/s10529-022-03288-1] [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: 02/18/2022] [Accepted: 08/04/2022] [Indexed: 11/02/2022]
Abstract
OBJECTIVES We constructed a recombinant oral GLP-1 analogue in Lactococcus lactis (L. lactis) and evaluated its physiological functions. RESULTS In silico docking suggested the alanine at position 8 substituted with serine (A8SGLP-1) reduced binding of DPP4, which translated to reduced cleavage by DPP4 with minimal changes in stability. This was further confirmed by an in vitro enzymatic assay which showed that A8SGLP-1 significantly increased half-life upon DPP4 treatment. In addition, recombinant L. lactis (LL-A8SGLP-1) demonstrated reduced fat mass with no changes in body weight, significant improvement of random glycemic control and reduced systemic inflammation compared with WT GLP-1 in db/db mice. CONCLUSION LL-A8SGLP-1 adopted in live biotherapeutic products reduce blood glucose in db/db mice without affecting its function.
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Affiliation(s)
- Hanlin Zhang
- Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, 1 West Beichen Rd. No. 5, Beijing, 100101, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Meng Dong
- Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, 1 West Beichen Rd. No. 5, Beijing, 100101, China
| | - Shouli Yuan
- Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, 1 West Beichen Rd. No. 5, Beijing, 100101, China
| | - Wanzhu Jin
- Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, 1 West Beichen Rd. No. 5, Beijing, 100101, China.
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Cho JS, Oh HJ, Jang YE, Kim HJ, Kim A, Song JA, Lee EJ, Lee J. Synthetic pro-peptide design to enhance the secretion of heterologous proteins by Saccharomyces cerevisiae. Microbiologyopen 2022; 11:e1300. [PMID: 35765186 PMCID: PMC9178654 DOI: 10.1002/mbo3.1300] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 05/27/2022] [Accepted: 05/27/2022] [Indexed: 12/02/2022] Open
Abstract
Heterologous protein production in Saccharomyces cerevisiae is a useful and effective strategy with many advantages, including the secretion of proteins that require posttranslational processing. However, heterologous proteins in S. cerevisiae are often secreted at comparatively low levels. To improve the production of the heterologous protein, human granulocyte colony‐stimulating factor (hG‐CSF) in S. cerevisiae, a secretion‐enhancing peptide cassette including an hIL‐1β‐derived propeptide, was added and used as a secretion enhancer to alleviate specific bottlenecks in the yeast secretory pathway. The effects of three key parameters—N‐glycosylation, net negative charge balance, and glycine‐rich flexible linker—were investigated in batch cultures of S. cerevisiae. Using a three‐stage design involving screening, selection, and optimization, the production and secretion of hG‐CSF by S. cerevisiae were significantly increased. The amount of extracellular mature hG‐CSF produced by the optimized propeptide after the final stage increased by 190% compared to that of the original propeptide. Although hG‐CSF was used as the model protein in the current study, this strategy applies to the enhanced production of other heterologous proteins, using S. cerevisiae as the host.
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Affiliation(s)
- Ji Sung Cho
- Department of Chemical and Biological Engineering, College of Engineering, Korea University, Seoul, Korea
| | - Hye Ji Oh
- Department of Chemical and Biological Engineering, College of Engineering, Korea University, Seoul, Korea
| | - Young Eun Jang
- Department of Chemical and Biological Engineering, College of Engineering, Korea University, Seoul, Korea
| | - Hyun Jin Kim
- Department of Chemical and Biological Engineering, College of Engineering, Korea University, Seoul, Korea
| | - Areum Kim
- Department of Chemical and Biological Engineering, College of Engineering, Korea University, Seoul, Korea
| | - Jong-Am Song
- Department of Chemical and Biological Engineering, College of Engineering, Korea University, Seoul, Korea
| | - Eun Jung Lee
- Department of Chemical Engineering, School of Applied Chemical Engineering, Kyungpook National University, Daegu, Korea
| | - Jeewon Lee
- Department of Chemical and Biological Engineering, College of Engineering, Korea University, Seoul, Korea
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Tavares LM, de Jesus LCL, da Silva TF, Barroso FAL, Batista VL, Coelho-Rocha ND, Azevedo V, Drumond MM, Mancha-Agresti P. Novel Strategies for Efficient Production and Delivery of Live Biotherapeutics and Biotechnological Uses of Lactococcus lactis: The Lactic Acid Bacterium Model. Front Bioeng Biotechnol 2020; 8:517166. [PMID: 33251190 PMCID: PMC7672206 DOI: 10.3389/fbioe.2020.517166] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Accepted: 10/09/2020] [Indexed: 12/15/2022] Open
Abstract
Lactic acid bacteria (LAB) are traditionally used in fermentation and food preservation processes and are recognized as safe for consumption. Recently, they have attracted attention due to their health-promoting properties; many species are already widely used as probiotics for treatment or prevention of various medical conditions, including inflammatory bowel diseases, infections, and autoimmune disorders. Some LAB, especially Lactococcus lactis, have been engineered as live vehicles for delivery of DNA vaccines and for production of therapeutic biomolecules. Here, we summarize work on engineering of LAB, with emphasis on the model LAB, L. lactis. We review the various expression systems for the production of heterologous proteins in Lactococcus spp. and its use as a live delivery system of DNA vaccines and for expression of biotherapeutics using the eukaryotic cell machinery. We have included examples of molecules produced by these expression platforms and their application in clinical disorders. We also present the CRISPR-Cas approach as a novel methodology for the development and optimization of food-grade expression of useful substances, and detail methods to improve DNA delivery by LAB to the gastrointestinal tract. Finally, we discuss perspectives for the development of medical applications of recombinant LABs involving animal model studies and human clinical trials, and we touch on the main safety issues that need to be taken into account so that bioengineered versions of these generally recognized as safe organisms will be considered acceptable for medical use.
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Affiliation(s)
- Laísa M Tavares
- Laboratory of Cellular and Molecular Genetics, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Luís C L de Jesus
- Laboratory of Cellular and Molecular Genetics, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Tales F da Silva
- Laboratory of Cellular and Molecular Genetics, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Fernanda A L Barroso
- Laboratory of Cellular and Molecular Genetics, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Viviane L Batista
- Laboratory of Cellular and Molecular Genetics, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Nina D Coelho-Rocha
- Laboratory of Cellular and Molecular Genetics, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Vasco Azevedo
- Laboratory of Cellular and Molecular Genetics, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Mariana M Drumond
- Laboratory of Cellular and Molecular Genetics, Federal University of Minas Gerais, Belo Horizonte, Brazil.,Departamento de Ciências Biológicas, Centro Federal de Educação Tecnológica de Minas Gerais, Belo Horizonte, Brazil
| | - Pamela Mancha-Agresti
- Laboratory of Cellular and Molecular Genetics, Federal University of Minas Gerais, Belo Horizonte, Brazil.,FAMINAS - BH, Belo Horizonte, Brazil
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Production of Phytase Enzyme by a Bioengineered Probiotic for Degrading of Phytate Phosphorus in the Digestive Tract of Poultry. Probiotics Antimicrob Proteins 2020; 11:580-587. [PMID: 29680882 DOI: 10.1007/s12602-018-9423-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Probiotics are beneficial microorganisms and have long been used in food production as well as health promotion products. Bioengineered probiotics are used to express and transfer native or recombinant molecules to the mucosal surface of the digestive tract to improve feed efficiency and promote health. Lactococcus lactis is a potential probiotic candidate to produce useful biological proteins. The aim of this investigation was to develop a recombinant Lactococcus lactis with the potential of producing phytase. To enhance the efficiency of expression and secretion of recombinant phytase, usp45 signal peptide was added to the expression vector containing phytase gene (appA2) derived from Escherichia coli. Sequencing of recombinant plasmid containing appA2 showed the correct construction of plasmid. Total length of the phytase insert was 1.25 kbp. A Blast search of the cloned fragment showed 99% similarity to the reported E. coli phytase sequence in the GenBank (accession number: AM946981.2). A plasmid containing usp45 and appA2 electrotransferred into Lactococcus lactis. Zymogram with polyacrylamide gel revealed that the protein extract from the supernatant and the cell pellet of recombinant bacteria had phytase activity. Enzyme activity of 4 U/ml was obtained in cell extracts, and supernatant maximal phytase activity was 19 U/ml. The recombinant L. lactis was supplemented in broiler chicken feed and showed the increase of apparent digestibility on phytate phosphorus in the digestive tract and it was same as performance of E. coli commercial phytase.
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Mucosal delivery of live Lactococcus lactis expressing functionally active JlpA antigen induces potent local immune response and prevent enteric colonization of Campylobacter jejuni in chickens. Vaccine 2020; 38:1630-1642. [PMID: 31932136 DOI: 10.1016/j.vaccine.2019.12.064] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Revised: 11/23/2019] [Accepted: 12/30/2019] [Indexed: 12/20/2022]
Abstract
Successful colonization of the mucosal epithelial cells is the key early step for Campylobacter jejuni (C. jejuni) pathogenesis in humans. A set of Surface Exposed Colonization Proteins (SECPs) are known to take leading role in bacterial adhesion and subsequent host pathogenesis. Among the major SECPs, the constitutively expressed C. jejuni surface lipoprotein Jejuni lipoprotein A (JlpA), interacts with intestinal heat shock protein 90α (Hsp90α) and contributes in disease progression by triggering pro-inflammatory responses via activation of NF-κB and p38 MAP kinase pathways. In addition to its ability to express on the surface, high sequence conservation of JlpA protein among different Campylobacter spp make it a suitable vaccine target against C. jejuni. Given that chickens are the primary source for C. jejuni infection in humans and persistent cecal colonization significantly contribute in pathogen transmission, we explicitly used chickens as a model to test the immune-protective efficacy of JlpA protein. Taking into account that gastro-intestinal tract is the major site for C. jejuni colonization, we chose to use mucosal (intragastric) route as mode for JlpA antigen delivery. To deliver JlpA via mucosal route, we engineered a food grade Lactic acid producing bacteria, Lactococcus lactis (L. lactis) to express functionally active JlpA protein in the surface. Further, we demonstrated its ability to substantially improve the antigen specific local immune responses in the intestine along with significant immune-protection against enteric colonization of C. jejuni in chickens.
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Engineering integrative vectors based on phage site-specific recombination mechanism for Lactococcus lactis. BMC Biotechnol 2019; 19:82. [PMID: 31775775 PMCID: PMC6882331 DOI: 10.1186/s12896-019-0575-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Accepted: 11/07/2019] [Indexed: 12/01/2022] Open
Abstract
Background Site-specific integration system allows foreign DNA to be integrated into the specific site of the host genome, enabling stable expression of heterologous protein. In this study, integrative vectors for secretion and surface display of proteins were constructed based on a lactococcal phage TP901–1 integrating system. Results The constructed integration system comprises of a lactococcal promoter (PnisA or P170), phage attachment site (attP) from bacteriophage TP901–1, a signal peptide (USP45 or SPK1) for translocation of the target protein, and a PrtP344 anchor domain in the case of the integrative vectors for surface display. There were eight successfully constructed integrative vectors with each having a different combination of promoter and signal peptide; pS1, pS2, pS3 and pS4 for secretion, and pSD1, pSD2, pSD3 and pSD4 for surface display of desired protein. The integration of the vectors into the host genome was assisted by a helper vector harbouring the integrase gene. A nuclease gene was used as a reporter and was successfully integrated into the L. lactis genome and Nuc was secreted or displayed as expected. The signal peptide SPK1 was observed to be superior to USP45-LEISSTCDA fusion in the secretion of Nuc. As for the surface display integrative vector, all systems developed were comparable with the exception of the combination of P170 promoter with USP45 signal peptide which gave very low signals in whole cell ELISA. Conclusion The engineered synthetic integrative vectors have the potential to be used for secretion or surface display of heterologous protein production in lactococcal expression system for research or industrial purposes, especially in live vaccine delivery.
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Kaur T, Balgir PP, Kaur B. Construction of a shuttle expression vector for lactic acid bacteria. J Genet Eng Biotechnol 2019; 17:10. [PMID: 31736018 PMCID: PMC6859148 DOI: 10.1186/s43141-019-0013-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2019] [Accepted: 10/02/2019] [Indexed: 12/12/2022]
Abstract
Background Lactic acid bacteria (LAB) are a diverse group of Gram-positive bacteria, which are widely distributed in various diverse natural habitats. These are used in a variety of industrial food fermentations and carry numerous traits with utmost relevance to the food industry. Genetic engineering has emerged as an effective means to improve and enhance the potential of commercially important bacterial strains. However, the biosafety of recombinant systems is an important concern during the implementation of such technologies on an industrial scale. In order to overcome this issue, cloning and expression systems have been developed preferably from fully characterized and annotated LAB plasmids encoding genes with known functions. Results The developed shuttle vector pPBT-GFP contains two theta-type replicons with a copy number of 4.4 and 2.8 in Pediococcus acidilactici MTCC 5101 and Lactobacillus brevis MTCC 1750, respectively. Antimicrobial “pediocin” produced by P. acidilactici MTCC 5101 and green fluorescent protein (GFP) of Aequorea victoria were successfully expressed as selectable markers. Heterologous bile salt hydrolase (BSH) from Lactobacillus fermentum NCDO 394 has been efficiently expressed in the host strains showing high specific activity of 126.12 ± 10.62 in P. acidilactici MTCC 5101 and 95.43 ± 4.26 in the case of L. brevis MTCC 1750, towards glycine-conjugated bile salts preferably as compared to taurine-conjugated salts. Conclusion The present article details the development of a LAB/LAB shuttle expression vector pPBT-GFP, capable of replication in LAB hosts, P. acidilactici MTCC 5101, and L. brevis MTCC 1750. Pediocin and GFP have been used as selectable markers with the efficient production of heterologous extracellular bile salt hydrolase. Thus, the constructed vector pPBT-GFP, with its ability to replicate in multiple hosts, low copy number, and stability in host cells, may serve as an ideal tool for improving LAB strains of commercial value using genetic engineering.
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Affiliation(s)
- Tejinder Kaur
- Department of Biotechnology, Punjabi University, Patiala, 147002, India.
| | - Praveen P Balgir
- Department of Biotechnology, Punjabi University, Patiala, 147002, India
| | - Baljinder Kaur
- Department of Biotechnology, Punjabi University, Patiala, 147002, India
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Vasiee A, Norouzi N, Yazdi FT, Mortazavi SA, Sankian M, Mahmoudi M, Shahidi F. Analysis of different signal peptides for the secretory production of Ama r 2 in gram-positive systems (Lactococcus lactis). Microb Pathog 2019; 138:103819. [PMID: 31669829 DOI: 10.1016/j.micpath.2019.103819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 10/22/2019] [Accepted: 10/23/2019] [Indexed: 11/19/2022]
Abstract
Prokaryotic systems have been considered the most affordable and simplest hosts which are being employed to express recombinant proteins such as allergens; nevertheless, without appropriate signal peptide (SP), these systems cannot be used for secretory proteins. Recently, a lot of effort has been put into assessing the potential of gram-positive strains such as lactic acid bacteria for new applications in the production of heterologous proteins. Ama r 2 is a respiratory allergen from Amaranthus retroflexus, whose recombinant production in the probiotic host could be introduced as a specific and effective way to rapid diagnosis and immunotherapy of this allergy. Consequently, the production of this recombinant protein using the prokaryotic system, requires a suitable SP to protect disulfide bonds and to prevent misfolding. This study was designed to predict the best SPs for the expression of Ama r 2 protein in Lactococcus lactis as the host. In this study, 42 signal sequences were selected from SP databases and the most important features of them were evaluated. First, n, h and c regions of the SPs and their probabilities were investigated by signalP software version 4.1. Then, their physicochemical properties were evaluated by Portparam and SOLpro. Moreover, the secretion sorting and sub-cellular localization sites were evaluated by PRED-TAT and ProtcompB software programs. The results revealed that yjgB, entC2 (Entrotoxine type C-2), ent B (Entrotoxine type), blaZ (Beta lactamase), dex (number 21), blm (Beta lactamase 2), dex (Dextranase; number 20) and number 26 were introduced theatrically as the best SPs to express Ama r 2 in Lactococcus lactis.
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Affiliation(s)
- Alireza Vasiee
- Department of Food Science and Technology, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Neda Norouzi
- University Medical Center Groningen, Antonius Deusinglaan 1, 9713, AV, the Netherlands
| | - Farideh Tabatabaee Yazdi
- Department of Food Science and Technology, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Seyed Ali Mortazavi
- Department of Food Science and Technology, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran.
| | - Mojtaba Sankian
- Immunology Research Center, Bu-Ali Research Institute, School of Medicine, University of Medical Sciences, Mashhad, Iran
| | - Mahmoud Mahmoudi
- Immunology Research Center, Bu-Ali Research Institute, School of Medicine, University of Medical Sciences, Mashhad, Iran
| | - Fakhri Shahidi
- Department of Food Science and Technology, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran
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13
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Plavec TV, Štrukelj B, Berlec A. Screening for New Surface Anchoring Domains for Lactococcus lactis. Front Microbiol 2019; 10:1879. [PMID: 31456787 PMCID: PMC6700490 DOI: 10.3389/fmicb.2019.01879] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Accepted: 07/30/2019] [Indexed: 12/14/2022] Open
Abstract
The display of recombinant proteins on bacterial surfaces is a developing research area with a wide range of potential biotechnological applications. The lactic acid bacterium Lactococcus lactis is an attractive host for such surface display, and a promising vector for in vivo delivery of bioactive proteins. Surface-displayed recombinant proteins are usually anchored to the bacterial cell wall through anchoring domains. Here, we investigated alternatives to the commonly applied lactococcal lysine motif (LysM)-containing surface anchoring domain, the C-terminus of AcmA (cAcmA). We screened 15 anchoring domains of lactococcal or phage origins that belong to the Pfam categories LPXTG, LysM, CW_1, Cpl-7, WxL, SH3, and ChW, which can provide non-covalent or covalent binding to the cell wall. LPXTG, LysM, the duplicated CW_1 and SH3 domains promoted significant surface display of two model proteins, B domain and DARPin I07, although the display achieved was lower than that for the reference anchoring domain, cAcmA. On the other hand, the ChW-containing anchoring domain of the lactococcal phage AM12 endolysin (cAM12) demonstrated surface display comparable to that of cAcmA. The anchoring ability of cAM12 was confirmed by enabling non-covalent heterologous anchoring of the B domain on wild-type bacteria, as well as anchoring of CXCL8-binding evasin-3, which provided potential therapeutic applicability; both were displayed to an extent comparable to that of cAcmA. We have thereby demonstrated the effective use of different protein anchoring domains in L. lactis, with ChW-containing cAM12 the most promising alternative to the established approaches for surface display on L. lactis.
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Affiliation(s)
- Tina Vida Plavec
- Department of Biotechnology, Jožef Stefan Institute, Ljubljana, Slovenia.,Faculty of Pharmacy, University of Ljubljana, Ljubljana, Slovenia
| | - Borut Štrukelj
- Department of Biotechnology, Jožef Stefan Institute, Ljubljana, Slovenia.,Faculty of Pharmacy, University of Ljubljana, Ljubljana, Slovenia
| | - Aleš Berlec
- Department of Biotechnology, Jožef Stefan Institute, Ljubljana, Slovenia.,Faculty of Pharmacy, University of Ljubljana, Ljubljana, Slovenia
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14
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Gaudu P, Yamamoto Y, Jensen PR, Hammer K, Lechardeur D, Gruss A. Genetics of Lactococci. Microbiol Spectr 2019; 7:10.1128/microbiolspec.gpp3-0035-2018. [PMID: 31298208 PMCID: PMC10957224 DOI: 10.1128/microbiolspec.gpp3-0035-2018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Indexed: 11/20/2022] Open
Abstract
Lactococcus lactis is the best characterized species among the lactococci, and among the most consumed food-fermenting bacteria worldwide. Thanks to their importance in industrialized food production, lactococci are among the lead bacteria understood for fundamental metabolic pathways that dictate growth and survival properties. Interestingly, lactococci belong to the Streptococcaceae family, which includes food, commensal and virulent species. As basic metabolic pathways (e.g., respiration, metal homeostasis, nucleotide metabolism) are now understood to underlie virulence, processes elucidated in lactococci could be important for understanding pathogen fitness and synergy between bacteria. This chapter highlights major findings in lactococci and related bacteria, and covers five themes: distinguishing features of lactococci, metabolic capacities including the less known respiration metabolism in Streptococcaceae, factors and pathways modulating stress response and fitness, interbacterial dialogue via metabolites, and novel applications in health and biotechnology.
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Affiliation(s)
| | - Yuji Yamamoto
- Laboratory of Cellular Microbiology, School of Veterinary Medicine, Kitasato University, Towada, 034-8628, Aomori Japan
| | - Peter Ruhdal Jensen
- National Food Institute, Technical University of Denmark, DK-2800 Lyngby, Denmark
| | - Karin Hammer
- DTU Bioengineering, Technical University of Denmark, DK-2800 Kongens Lyngby, Denmark
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15
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Mahmud H, Ismail A, Abdul Rahim R, Low KO, Md Illias R. Enhanced secretion of cyclodextrin glucanotransferase (CGTase) by Lactococcus lactis using heterologous signal peptides and optimization of cultivation conditions. J Biotechnol 2019; 296:22-31. [PMID: 30878516 DOI: 10.1016/j.jbiotec.2019.02.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Revised: 02/04/2019] [Accepted: 02/22/2019] [Indexed: 11/18/2022]
Abstract
In previous studies of Lactococcus lactis, the levels of proteins secreted using heterologous signal peptides were observed to be lower than those obtained using the signal peptide from Usp45, the major secreted lactococcal protein. In this study, G1 (the native signal peptide of CGTase) and the signal peptide M5 (mutant of the G1 signal peptide) were introduced into L. lactis to investigate the effect of signal peptides on lactococcal protein secretion to improve secretion efficiency. The effectiveness of these signal peptides were compared to the Usp45 signal peptide. The highest secretion levels were obtained using the G1 signal peptide. Sequence analysis of signal peptide amino acids revealed that a basic N-terminal signal peptide is not absolutely required for efficient protein export in L. lactis. Moreover, the introduction of a helix-breaking residue in the H-region of the M5 signal peptide caused a reduction in the signal peptide hydrophobicity and decreased protein secretion. In addition, the optimization of cultivation conditions for recombinant G1-CGTase production via response surface methodology (RSM) showed that CGTase activity increased approximately 2.92-fold from 5.01 to 16.89 U/ml compared to the unoptimized conditions.
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Affiliation(s)
- Hafizah Mahmud
- Department of Bioprocess and Polymer Engineering, School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia
| | - Abbas Ismail
- Department of Bioprocess and Polymer Engineering, School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia
| | - Raha Abdul Rahim
- Department of Cell and Molecular Biology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Kheng Oon Low
- Institut Genom Malaysia, Jalan Bangi, 43000, Kajang, Selangor, Malaysia
| | - Rosli Md Illias
- Department of Bioprocess and Polymer Engineering, School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia.
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16
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Liu Q, Li J, Zhao J, Wu J, Shao T. Enhancement of lignocellulosic degradation in high-moisture alfalfa via anaerobic bioprocess of engineered Lactococcus lactis with the function of secreting cellulase. BIOTECHNOLOGY FOR BIOFUELS 2019; 12:88. [PMID: 31015862 PMCID: PMC6469111 DOI: 10.1186/s13068-019-1429-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/15/2018] [Accepted: 04/09/2019] [Indexed: 06/09/2023]
Abstract
BACKGROUND Butyric fermentation and a substantial loss of dry matter (DM) often occur in alfalfa silage during the rainy season, which is not conducive to subsequent biofuel production. Currently, there have been negative effects on the combination of cellulases and lactic acid bacteria (LAB) on processing high-moisture alfalfa silage; however, transgenically engineered LAB strains that secrete cellulase have been proposed as an alternative approach to avoid the above problem. The objective of the present study was to construct engineered Lactococcus lactis strains with high-efficiency secretory-expressing cellulase genes from Trichoderma reesei and to investigate the effects of the combination of transgenically engineered L. lactis strains HT1/pMG36e-usp45-bgl1, HT1/pMG36e-usp45-cbh2, and HT1/pMG36e-usp45-egl3 (HT2) on fermentation quality, structural carbohydrate degradability and nonstructural carbohydrate fermentation kinetics of high-moisture alfalfa silage treated without additive as a negative control (Control), or/and with cellulase (EN), wild-type L. lactis subsp. lactis MG1363 (HT1) and the combination of HT1 and EN (HT1 + EN) as positive additive controls. RESULTS Engineered L. lactis strains were successfully constructed and efficiently secreted endoglucanase (1118 mU/mL), cellobiohydrolase (222 mU/mL), and β-glucosidase (131 mU/mL) and had high filter paper activity (236 mU/mL). Ensiling experiments verified that HT2 obtained the highest fermentation quality score (83.6) and most efficiently processed high-moisture alfalfa silage, demonstrated by a low pH (4.49) and ammonia-N content (106 g/kg nitrogen) and a high lactic acid content (67.1 g/kg DM) and without butyric acid. Change curves of structural carbohydrates revealed that HT2 degraded more lignocelluloses, demonstrated by the lowest contents of neutral detergent fibre, acid detergent fibre, cellulose and hemicellulose after ensiling for 60 days. Kinetic analysis showed that the most residual water-soluble carbohydrates, glucose, fructose and xylose generated by lignocellulose degradation were produced by HT2, followed by HT1 + EN. The HT2-treated silages had the highest DM recovery, had the fewest Clostridia spores, emitted a fragrance and were not sticky. CONCLUSION HT2 improved the conversion of lignocellulose to sugars and processed high-moisture alfalfa silage efficiently. This is a novel strategy that can be used to enhance lignocellulosic degradation in high-moisture alfalfa via a bioprocess with transgenically engineered L. lactis strains, which could enhance the development of alfalfa as a biomass feedstock and promote second-generation biofuel development in the rainy season.
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Affiliation(s)
- Qinhua Liu
- Institute of Ensiling and Processing of Grass, Nanjing Agricultural University, Weigang 1, Nanjing, 210095 China
| | - Junfeng Li
- Institute of Ensiling and Processing of Grass, Nanjing Agricultural University, Weigang 1, Nanjing, 210095 China
| | - Jie Zhao
- Institute of Ensiling and Processing of Grass, Nanjing Agricultural University, Weigang 1, Nanjing, 210095 China
| | - Jingxing Wu
- Institute of Ensiling and Processing of Grass, Nanjing Agricultural University, Weigang 1, Nanjing, 210095 China
| | - Tao Shao
- Institute of Ensiling and Processing of Grass, Nanjing Agricultural University, Weigang 1, Nanjing, 210095 China
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17
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Engineering of lactic acid bacteria for delivery of therapeutic proteins and peptides. Appl Microbiol Biotechnol 2019; 103:2053-2066. [DOI: 10.1007/s00253-019-09628-y] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Revised: 12/11/2018] [Accepted: 12/17/2018] [Indexed: 02/06/2023]
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18
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Analysis of Immune Responses in Mice Orally Immunized with Recombinant pMG36e-SP-TSOL18/ Lactococcus lactis and pMG36e-TSOL18/ Lactococcus lactis Vaccines of Taenia solium. J Immunol Res 2018; 2018:9262631. [PMID: 30581878 PMCID: PMC6276433 DOI: 10.1155/2018/9262631] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Revised: 07/10/2018] [Accepted: 08/26/2018] [Indexed: 12/31/2022] Open
Abstract
Cysticercosis is a cosmopolitan zoonotic parasitic disease infected by larval of Taenia solium (T. solium). Several drugs for the treatment of cysticercosis, such as praziquantel, albendazole, and mebendazole, have certain toxicity and side effects. Considering that there is no vaccine available, we studied a new vaccine for cysticercosis in this study. The complete TSOL18 gene and the optimized SP-TSOL18 gene fragments were obtained using PCR-based accurate synthesis method. The secretory and intracellular recombinant pMG36e-SP-TSOL18/Lactococcus lactis (L. lactis) and pMG36e-TSOL18/L. lactis vaccines of T. solium were prepared. Immune responses in mice orally immunized with these two recombinant L. lactis vaccines were analyzed by the determination of specific antibodies (IgG, IgG1, IgG2a, and sIgA) in serum, spleen lymphocyte proliferation, and cytokines (IL-2, IFN-γ, IL-4, and IL-10) in spleen lymphocyte culture supernatant. Our results showed that, after the first immunization, in these two recombinant L. lactis vaccine groups, the levels of serum specific IgG, IgG2a, and IgG1 increased on 14–56 d and reached the highest level on days 42, 42, and 28, respectively. The level of specific sIgA of intestinal mucosa also increased on 14–56 d and reached the highest level on day 42. The level of spleen lymphocyte proliferation increased on 14–56 d and reached the highest level on day 42. The levels of IL-2, IFN-γ, IL-4, and IL-10 in spleen lymphocyte culture supernatant increased on 14–56 d and reached the highest level on days 42, 42, 28, and 28, respectively. These results indicated that the recombinant pMG36e-SP-TSOL18/L. lactis and pMG36e-TSOL18/L. lactis vaccines can induce specific cellular, humoral, and mucosal immune responses in mice with oral vaccination. More importantly, the recombinant pMG36e-SP-TSOL18/L. lactis vaccine has a better immune effect. In summary, these results demonstrated the possibility of using L. lactis strain as a vector to deliver protective antigens of T. solium.
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19
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Taghinezhad-S S, Razavilar V, Keyvani H, Razavi MR, Nejadsattari T. Extracellular overproduction of recombinant Iranian HPV-16 E6 oncoprotein in Lactococcus lactis using the NICE system. Future Virol 2018. [DOI: 10.2217/fvl-2018-0026] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Aim: This study aimed to optimize production of HPV-16 E6 by recombinant Lactococcus lactis. Materials & methods: Optimization procedures were conducted on the factors of nisin amount, induction temperature, cell density at induction time, glucose and yeast extract concentrations. Results: Cell densities reached 5.2 and 1.74 g/l, and maximum rE6 production reached 45.25 and 15.91 μg/ml for optiE6 and E6, respectively, at 75 g/l initial glucose concentration in the batch study. During fed-batch fermentation, protein values were improved by feeding with yeast extract and GM17 medium, reaching the maximum of 80.92 and 15.95 μg/ml, and the maximum biomass reached 9.62 and 3.12 g/l, respectively. Conclusion: These encouraging outcomes represent L. lactis cells as an efficient cell factory for antigen production.
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Affiliation(s)
- Sedigheh Taghinezhad-S
- Department of Microbiology, Faculty of Basic Sciences, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Vadood Razavilar
- Department of Food Hygiene, Faculty of Veterinary Sciences, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Hossein Keyvani
- Department of Virology, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | | | - Taher Nejadsattari
- Department of Biology, Faculty of Basic Sciences, Science and Research Branch, Islamic Azad University, Tehran, Iran
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20
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Škrlec K, Ručman R, Jarc E, Sikirić P, Švajger U, Petan T, Perišić Nanut M, Štrukelj B, Berlec A. Engineering recombinant Lactococcus lactis as a delivery vehicle for BPC-157 peptide with antioxidant activities. Appl Microbiol Biotechnol 2018; 102:10103-10117. [PMID: 30191288 DOI: 10.1007/s00253-018-9333-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Revised: 08/02/2018] [Accepted: 08/06/2018] [Indexed: 02/06/2023]
Abstract
Lactic acid bacteria (LAB) are attractive hosts for the expression of heterologous proteins and can be engineered to deliver therapeutic proteins or peptides to mucosal surfaces. The gastric stable pentadecapeptide BPC-157 is able to prevent and treat gastrointestinal inflammation by reducing the production of reactive oxygen species (ROS). In this study, we used LAB Lactococcus lactis as a vector to deliver BPC-157 by surface display and trypsin shedding or by secretion to the growth medium. Surface display of BPC-157 was achieved by fusing it with basic membrane protein A (BmpA) or with the peptidoglycan binding domain of AcmA and Usp45 secretion signal. While the expression of BmpA-fusion proteins was higher than that of AcmA/Usp45-fusion protein, the surface display ability of BPC-157 was approximately 14-fold higher with AcmA/Usp45-fusion protein. Release of BPC-157 from the bacterial surface or from isolated fusion proteins by trypsinization was demonstrated with anti-BPC-157 antibodies or by mass spectrometry. The concentration of BPC-157 delivered by surface display via AcmA/Usp45-fusion was 30 ng/ml. This increased to 117 ng/ml by Usp45 signal-mediated secretion, making the latter the most effective lactococcal delivery approach for BPC-157. Secreted BPC-157 significantly decreased ROS production in 149BR fibroblast cell model, suggesting its potential benefit in the treatment of intestinal inflammations. Additionally, a comparison of different modes of small peptide delivery by L. lactis, performed in the present study, will facilitate the future use of L. lactis as peptide delivery vehicle.
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Affiliation(s)
- Katja Škrlec
- Department of Biotechnology, Jožef Stefan Institute, Ljubljana, Slovenia.,Graduate School of Biomedicine, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | | | - Eva Jarc
- Department of Molecular and Biomedical Sciences, Jožef Stefan Institute, Ljubljana, Slovenia.,Jožef Stefan International Postgraduate School, Ljubljana, Slovenia
| | - Predrag Sikirić
- Department of Pharmacology and Pathology, Medical Faculty, University of Zagreb, Zagreb, Croatia
| | - Urban Švajger
- Blood Transfusion Centre of Slovenia, Ljubljana, Slovenia
| | - Toni Petan
- Department of Molecular and Biomedical Sciences, Jožef Stefan Institute, Ljubljana, Slovenia
| | | | - Borut Štrukelj
- Department of Biotechnology, Jožef Stefan Institute, Ljubljana, Slovenia.,Faculty of Pharmacy, University of Ljubljana, Ljubljana, Slovenia
| | - Aleš Berlec
- Department of Biotechnology, Jožef Stefan Institute, Ljubljana, Slovenia.
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21
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Bober JR, Beisel CL, Nair NU. Synthetic Biology Approaches to Engineer Probiotics and Members of the Human Microbiota for Biomedical Applications. Annu Rev Biomed Eng 2018. [PMID: 29528686 DOI: 10.1146/annurev-bioeng-062117-121019] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
An increasing number of studies have strongly correlated the composition of the human microbiota with many human health conditions and, in several cases, have shown that manipulating the microbiota directly affects health. These insights have generated significant interest in engineering indigenous microbiota community members and nonresident probiotic bacteria as biotic diagnostics and therapeutics that can probe and improve human health. In this review, we discuss recent advances in synthetic biology to engineer commensal and probiotic lactic acid bacteria, bifidobacteria, and Bacteroides for these purposes, and we provide our perspective on the future potential of these technologies.
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Affiliation(s)
- Josef R Bober
- Department of Chemical and Biological Engineering, Tufts University, Medford, Massachusetts 02155, USA;
| | - Chase L Beisel
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695, USA;
| | - Nikhil U Nair
- Department of Chemical and Biological Engineering, Tufts University, Medford, Massachusetts 02155, USA;
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22
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Lim PY, Tan LL, Ow DSW, Wong FT. A propeptide toolbox for secretion optimization of Flavobacterium meningosepticum endopeptidase in Lactococcus lactis. Microb Cell Fact 2017; 16:221. [PMID: 29207979 PMCID: PMC5715515 DOI: 10.1186/s12934-017-0836-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Accepted: 11/28/2017] [Indexed: 12/14/2022] Open
Abstract
Background Lactic acid bacteria are a family of “generally regarded as safe” organisms traditionally used for food fermentation. In recent years, they have started to emerge as potential chassis for heterologous protein production. And more recently, due to their beneficial properties in the gut, they have been examined as potential candidates for mucosal delivery vectors, especially for acid-sensitive enzymes. One such application would be the delivery of gluten-digesting endopeptidases for the treatment of celiac disease. To facilitate these applications, an efficient recombinant protein expression toolbox is required, especially for recombinant protein secretion. While current tools for enhancing protein secretion consist mainly of signal peptides, secretion propeptides have also been observed to play a crucial role for protein secretion and improved yields. Results To expand the propeptide library for secretion optimization, we have mined and characterized three naturally occurring propeptides from the sequenced genomes of 109 Lactococcus species. These newly-mined propeptides were introduced after the N-terminal USP45 secretion signal to characterize and compare their effects on the secretion of Escherichia coli thioredoxin (TRX) and Flavobacterium meningosepticum prolyl endopeptidase (Fm PEP) in Lactococcus lactis NZ9000. All three propeptides, along with the positive control LEISSTCDA, improved volumetric secretion yields by 1.4–2.3-folds. However, enhancement of secretion yield is dependent on protein of interest. For TRX, the optimal combination of USP45 signal peptide and LEISSTCDA produced a 2.3-fold increase in secretion yields. Whilst for Fm PEP, propeptide 1 with USP45 signal peptide improved volumetric secretion yields by 2.2-fold compared to a 1.4-fold increase by LEISSTCDA. Similar trends in Fm PEP activity and protein yield also demonstrated minimal effect of the negative charged propeptides on PEP activity and thus folding. Conclusions Overall, we have characterized three new propeptides for use in L. lactis secretion optimization. From success of these propeptides for improvement of secretion yields, we anticipate this collection to be valuable to heterologous protein secretion optimisation in lactic acid bacteria. We have also demonstrated for the first time, secretion of Fm PEP in L. lactis for potential use as a therapy agent in celiac disease. Electronic supplementary material The online version of this article (10.1186/s12934-017-0836-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Pei Yu Lim
- Microbial Cell Group, Bioprocessing Technology Institute, Agency for Science, Technology and Research (A*STAR), 20 Biopolis Way, #06-01 Centros, Singapore, 138668, Singapore
| | - Lee Ling Tan
- Molecular Engineering Lab, Biomedical Sciences Institutes, A*STAR, 61 Biopolis Drive, Singapore, 138673, Singapore
| | - Dave Siak-Wei Ow
- Microbial Cell Group, Bioprocessing Technology Institute, Agency for Science, Technology and Research (A*STAR), 20 Biopolis Way, #06-01 Centros, Singapore, 138668, Singapore.
| | - Fong T Wong
- Molecular Engineering Lab, Biomedical Sciences Institutes, A*STAR, 61 Biopolis Drive, Singapore, 138673, Singapore.
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23
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Solution for promoting egl 3 gene of Trichoderma reesei high-efficiency secretory expression in Escherichia coli and Lactococcus lactis. Process Biochem 2017. [DOI: 10.1016/j.procbio.2017.07.031] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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24
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Zhou J, Wei K, Wang C, Dong W, Ma N, Zhu L, Hu LP, Huang H, Zhu R. Oral immunisation with Taishan Pinus massoniana pollen polysaccharide adjuvant with recombinant Lactococcus lactis-expressing Proteus mirabilis ompA confers optimal protection in mice. Allergol Immunopathol (Madr) 2017. [PMID: 28629671 DOI: 10.1016/j.aller.2017.04.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
BACKGROUND Proteus mirabilis poses a critical burden on the breeding industry, but no efficient vaccine is available for animals. METHOD A recombinant Lactococcus lactis expressing the ompA of P. mirabilis was used to develop a vaccine. The mucosal and systemic immune responses of the recombinant vaccine were evaluated in mice after oral immunisation. The inhibition on P. mirabilis colonisation of vaccines was also determined. Moreover, Taishan Pinus massoniana pollen polysaccharides (TPPPS) were used as adjuvants to examine the immunomodulatory effects. RESULTS The pure recombinant L. lactis vaccine significantly induced the production of specific IgA and IgG, IL-2, IL-4, IFN-γ, and T lymphocyte proliferation, and the immunised mice exhibited significant resistance to P. mirabilis colonisation. Notably, the TPPPS adjuvant vaccines induced higher levels of immune responses than the pure L. lactis. CONCLUSIONS The L. lactis as a vaccine vehicle combined with TPPPS adjuvant provides a feasible method for preventing P. mirabilis infection.
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Affiliation(s)
- J Zhou
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, College of Animal Science and Technology, Shandong Agricultural University, Shandong Taian 271018, PR China
| | - K Wei
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, College of Animal Science and Technology, Shandong Agricultural University, Shandong Taian 271018, PR China
| | - C Wang
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, College of Animal Science and Technology, Shandong Agricultural University, Shandong Taian 271018, PR China
| | - W Dong
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, College of Animal Science and Technology, Shandong Agricultural University, Shandong Taian 271018, PR China
| | - N Ma
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, College of Animal Science and Technology, Shandong Agricultural University, Shandong Taian 271018, PR China
| | - L Zhu
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, College of Animal Science and Technology, Shandong Agricultural University, Shandong Taian 271018, PR China
| | - L P Hu
- Animal Disease Prevention and Control Center of Shandong Province, Animal Husbandry and Veterinary Bureau of Shandong Province, Shandong Jinan 250022, PR China
| | - H Huang
- Shandong New Hope Liuhe Co., Ltd, New Hope Group, Shandong Qingdao, 266061, PR China
| | - R Zhu
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, College of Animal Science and Technology, Shandong Agricultural University, Shandong Taian 271018, PR China.
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25
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Chatzi KE, Sardis MF, Tsirigotaki A, Koukaki M, Šoštarić N, Konijnenberg A, Sobott F, Kalodimos CG, Karamanou S, Economou A. Preprotein mature domains contain translocase targeting signals that are essential for secretion. J Cell Biol 2017; 216:1357-1369. [PMID: 28404644 PMCID: PMC5412566 DOI: 10.1083/jcb.201609022] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Revised: 10/07/2016] [Accepted: 02/23/2017] [Indexed: 11/22/2022] Open
Abstract
Secretory proteins are only temporary cytoplasmic residents. They are typically synthesized as preproteins, carrying signal peptides N-terminally fused to their mature domains. In bacteria secretion largely occurs posttranslationally through the membrane-embedded SecA-SecYEG translocase. Upon crossing the plasma membrane, signal peptides are cleaved off and mature domains reach their destinations and fold. Targeting to the translocase is mediated by signal peptides. The role of mature domains in targeting and secretion is unclear. We now reveal that mature domains harbor their own independent targeting signals (mature domain targeting signals [MTSs]). These are multiple, degenerate, interchangeable, linear or 3D hydrophobic stretches that become available because of the unstructured states of targeting-competent preproteins. Their receptor site on the cytoplasmic face of the SecYEG-bound SecA is also of hydrophobic nature and is located adjacent to the signal peptide cleft. Both the preprotein MTSs and their receptor site on SecA are essential for protein secretion. Evidently, mature domains have their own previously unsuspected distinct roles in preprotein targeting and secretion.
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Affiliation(s)
- Katerina E Chatzi
- Laboratory of Molecular Bacteriology, Department of Microbiology and Immunology, Rega Institute for Medical Research, Katholieke Universiteit Leuven, 3000 Leuven, Belgium
| | - Marios Frantzeskos Sardis
- Laboratory of Molecular Bacteriology, Department of Microbiology and Immunology, Rega Institute for Medical Research, Katholieke Universiteit Leuven, 3000 Leuven, Belgium
| | - Alexandra Tsirigotaki
- Laboratory of Molecular Bacteriology, Department of Microbiology and Immunology, Rega Institute for Medical Research, Katholieke Universiteit Leuven, 3000 Leuven, Belgium
| | - Marina Koukaki
- Institute of Molecular Biology and Biotechnology FoRTH, Iraklio, 71110 Crete, Greece
| | - Nikolina Šoštarić
- Laboratory of Molecular Bacteriology, Department of Microbiology and Immunology, Rega Institute for Medical Research, Katholieke Universiteit Leuven, 3000 Leuven, Belgium
| | - Albert Konijnenberg
- Biomolecular and Analytical Mass Spectrometry Group, Department of Chemistry, University of Antwerp, 2000 Antwerp, Belgium
| | - Frank Sobott
- Biomolecular and Analytical Mass Spectrometry Group, Department of Chemistry, University of Antwerp, 2000 Antwerp, Belgium
| | - Charalampos G Kalodimos
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, MN 55455
| | - Spyridoula Karamanou
- Laboratory of Molecular Bacteriology, Department of Microbiology and Immunology, Rega Institute for Medical Research, Katholieke Universiteit Leuven, 3000 Leuven, Belgium
| | - Anastassios Economou
- Laboratory of Molecular Bacteriology, Department of Microbiology and Immunology, Rega Institute for Medical Research, Katholieke Universiteit Leuven, 3000 Leuven, Belgium .,Institute of Molecular Biology and Biotechnology FoRTH, Iraklio, 71110 Crete, Greece
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26
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Song AAL, In LLA, Lim SHE, Rahim RA. A review on Lactococcus lactis: from food to factory. Microb Cell Fact 2017; 16:55. [PMID: 28376880 PMCID: PMC5379754 DOI: 10.1186/s12934-017-0669-x] [Citation(s) in RCA: 184] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2016] [Accepted: 03/28/2017] [Indexed: 02/08/2023] Open
Abstract
Lactococcus lactis has progressed a long way since its discovery and initial use in dairy product fermentation, to its present biotechnological applications in genetic engineering for the production of various recombinant proteins and metabolites that transcends the heterologous species barrier. Key desirable features of this gram-positive lactic acid non-colonizing gut bacteria include its generally recognized as safe (GRAS) status, probiotic properties, the absence of inclusion bodies and endotoxins, surface display and extracellular secretion technology, and a diverse selection of cloning and inducible expression vectors. This have made L. lactis a desirable and promising host on par with other well established model bacterial or yeast systems such as Escherichia coli, Saccharomyces [corrected] cerevisiae and Bacillus subtilis. In this article, we review recent technological advancements, challenges, future prospects and current diversified examples on the use of L. lactis as a microbial cell factory. Additionally, we will also highlight latest medical-based applications involving whole-cell L. lactis as a live delivery vector for the administration of therapeutics against both communicable and non-communicable diseases.
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Affiliation(s)
- Adelene Ai-Lian Song
- Department of Microbiology, Faculty of Biotechnology & Biomolecular Sciences, University Putra Malaysia, 43400, Serdang, Selangor, Malaysia.
| | - Lionel L A In
- Functional Food Research Group, Department of Biotechnology, Faculty of Applied Sciences, UCSI University, Kuala Lumpur, Malaysia
| | - Swee Hua Erin Lim
- Perdana University-Royal College of Surgeons in Ireland, Perdana University, Block B and D, MAEPS Building, MARDI Complex, Jalan MAEPS Perdana, 43400, Serdang, Selangor, Malaysia
| | - Raha Abdul Rahim
- Department of Cell & Molecular Biology, Faculty of Biotechnology & Biomolecular Sciences, University Putra Malaysia, Serdang, Selangor, Malaysia
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Zeng Z, Yu R, Zuo F, Zhang B, Peng D, Ma H, Chen S. Heterologous Expression and Delivery of Biologically Active Exendin-4 by Lactobacillus paracasei L14. PLoS One 2016; 11:e0165130. [PMID: 27764251 PMCID: PMC5072737 DOI: 10.1371/journal.pone.0165130] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Accepted: 10/06/2016] [Indexed: 01/31/2023] Open
Abstract
Exendin-4, a glucagon-like protein-1 (GLP-1) receptor agonist, is an excellent therapeutic peptide drug for type 2 diabetes due to longer lasting biological activity compared to GLP-1. This study explored the feasibility of using probiotic Lactobacillus paracasei as an oral vector for recombinant exendin-4 peptide delivery, an alternative to costly chemical synthesis and inconvenient administration by injection. L. paracasei transformed with a plasmid encoding the exendin-4 gene (L. paracasei L14/pMG76e-exendin-4) with a constitutive promotor was successfully constructed and showed efficient secretion of exendin-4. The secreted exendin-4 significantly enhanced insulin secretion of INS-1 β-cells, along with an increment in their proliferation and inhibition of their apoptosis, corresponding to the effect of GLP-1 on these cells. The transcription level of the pancreatic duodenal homeobox-1 gene (PDX-1), a key transcription factor for cellular insulin synthesis and secretion, was upregulated by the treatment with secreted exendin-4, paralleling the upregulation of insulin gene expression. Caco-2 cell monolayer permeability assay showed a 34-fold increase in the transport of exendin-4 delivered by L. paracasei vs. that of free exendin-4 (control), suggesting effective facilitation of exendin-4 transport across the intestinal barrier by this delivery system. This study demonstrates that the probiotic Lactobacillus can be engineered to secrete bioactive exendin-4 and facilitate its transport through the intestinal barrier, providing a novel strategy for oral exendin-4 delivery using this lactic acid bacterium.
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Affiliation(s)
- Zhu Zeng
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, P. R. China
- Key Laboratory of Functional Dairy, Department of Food Science and Engineering, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, P. R. China
| | - Rui Yu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, P. R. China
- Key Laboratory of Functional Dairy, Department of Food Science and Engineering, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, P. R. China
| | - Fanglei Zuo
- Key Laboratory of Functional Dairy, Department of Food Science and Engineering, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, P. R. China
| | - Bo Zhang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, P. R. China
- Key Laboratory of Functional Dairy, Department of Food Science and Engineering, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, P. R. China
| | - Deju Peng
- Yangling Zhongyang Joint Ranch Co. Ltd., Beiyang Breeding Area, Yangling Street Agency, Yangling District, Xi'an, P. R. China
| | - Huiqin Ma
- College of Agriculture and Biotechnology, China Agricultural University, Beijing, P. R. China
| | - Shangwu Chen
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, P. R. China
- Key Laboratory of Functional Dairy, Department of Food Science and Engineering, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, P. R. China
- * E-mail:
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28
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Back A, Borges F, Mangavel C, Paris C, Rondags E, Kapel R, Aymes A, Rogniaux H, Pavlović M, van Heel AJ, Kuipers OP, Revol-Junelles AM, Cailliez-Grimal C. Recombinant pediocin in Lactococcus lactis: increased production by propeptide fusion and improved potency by co-production with PedC. Microb Biotechnol 2015; 9:466-77. [PMID: 26147827 PMCID: PMC4919988 DOI: 10.1111/1751-7915.12285] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2014] [Revised: 02/18/2015] [Accepted: 03/11/2015] [Indexed: 11/29/2022] Open
Abstract
We describe the impact of two propeptides and PedC on the production yield and the potency of recombinant pediocins produced in Lactococcus lactis. On the one hand, the sequences encoding the propeptides SD or LEISSTCDA were inserted between the sequence encoding the signal peptide of Usp45 and the structural gene of the mature pediocin PA‐1. On the other hand, the putative thiol‐disulfide oxidoreductase PedC was coexpressed with pediocin. The concentration of recombinant pediocins produced in supernatants was determined by enzyme‐linked immunosorbent assay. The potency of recombinant pediocins was investigated by measuring the minimal inhibitory concentration by agar well diffusion assay. The results show that propeptides SD or LEISSTCDA lead to an improved secretion of recombinant pediocins with apparently no effect on the antibacterial potency and that PedC increases the potency of recombinant pediocin. To our knowledge, this study reveals for the first time that pediocin tolerates fusions at the N‐terminal end. Furthermore, it reveals that only expressing the pediocin structural gene in a heterologous host is not sufficient to get an optimal potency and requires the accessory protein PedC. In addition, it can be speculated that PedC catalyses the correct formation of disulfide bonds in pediocin.
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Affiliation(s)
- Alexandre Back
- Laboratoire d'Ingénierie des Biomolécules (LIBio), ENSAIA, Université de Lorraine, 2 Avenue de la Forêt de Haye, Vandœuvre-lès-Nancy, 54518, France
| | - Frédéric Borges
- Laboratoire d'Ingénierie des Biomolécules (LIBio), ENSAIA, Université de Lorraine, 2 Avenue de la Forêt de Haye, Vandœuvre-lès-Nancy, 54518, France
| | - Cécile Mangavel
- Laboratoire d'Ingénierie des Biomolécules (LIBio), ENSAIA, Université de Lorraine, 2 Avenue de la Forêt de Haye, Vandœuvre-lès-Nancy, 54518, France
| | - Cédric Paris
- Laboratoire d'Ingénierie des Biomolécules (LIBio), ENSAIA, Université de Lorraine, 2 Avenue de la Forêt de Haye, Vandœuvre-lès-Nancy, 54518, France
| | - Emmanuel Rondags
- Laboratoire Réactions et Génie des Procédés (LRGP), CNRS-UMR 7274, Université de Lorraine, 2 Avenue de la Forêt de Haye, Vandœuvre-lès-Nancy, 54518, France
| | - Romain Kapel
- Laboratoire Réactions et Génie des Procédés (LRGP), CNRS-UMR 7274, Université de Lorraine, 2 Avenue de la Forêt de Haye, Vandœuvre-lès-Nancy, 54518, France
| | - Arnaud Aymes
- Laboratoire Réactions et Génie des Procédés (LRGP), CNRS-UMR 7274, Université de Lorraine, 2 Avenue de la Forêt de Haye, Vandœuvre-lès-Nancy, 54518, France
| | - Hélène Rogniaux
- INRA Unité Biopolymères Interactions Assemblages (UR1268), Rue de la Géraudière, Nantes, 44316, France
| | - Marija Pavlović
- INRA Unité Biopolymères Interactions Assemblages (UR1268), Rue de la Géraudière, Nantes, 44316, France
| | - Auke J van Heel
- Department of Molecular Genetics, GBB Institute, University of Gronningen, Nijenborgh 7, 9747AG, Groningen, The Netherlands
| | - Oscar P Kuipers
- Department of Molecular Genetics, GBB Institute, University of Gronningen, Nijenborgh 7, 9747AG, Groningen, The Netherlands
| | - Anne-Marie Revol-Junelles
- Laboratoire d'Ingénierie des Biomolécules (LIBio), ENSAIA, Université de Lorraine, 2 Avenue de la Forêt de Haye, Vandœuvre-lès-Nancy, 54518, France
| | - Catherine Cailliez-Grimal
- Laboratoire d'Ingénierie des Biomolécules (LIBio), ENSAIA, Université de Lorraine, 2 Avenue de la Forêt de Haye, Vandœuvre-lès-Nancy, 54518, France
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29
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Wang L, Yang Y, Cai B, Cao P, Yang M, Chen Y. Coexpression and secretion of endoglucanase and phytase genes in Lactobacillus reuteri. Int J Mol Sci 2014; 15:12842-60. [PMID: 25050780 PMCID: PMC4139877 DOI: 10.3390/ijms150712842] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2014] [Revised: 05/19/2014] [Accepted: 07/01/2014] [Indexed: 12/01/2022] Open
Abstract
A multifunctional transgenic Lactobacillus with probiotic characteristics and an ability to degrade β-glucan and phytic acid (phytate) was engineered to improve nutrient utilization, increase production performance and decrease digestive diseases in broiler chickens. The Bacillus subtilis WL001 endoglucanase gene (celW) and Aspergillus fumigatus WL002 phytase gene (phyW) mature peptide (phyWM) were cloned into an expression vector with the lactate dehydrogenase promoter of Lactobacillus casei and the secretion signal peptide of the Lactococcus lactisusp45 gene. This construct was then transformed into Lactobacillus reuteri XC1 that had been isolated from the gastrointestinal tract of broilers. Heterologous enzyme production and feed effectiveness of this genetically modified L. reuteri strain were investigated and evaluated. Sodium dodecyl sulfate polyacrylamide gel electrophoresis analysis showed that the molecular mass of phyWM and celW was approximately 48.2 and 55 kDa, respectively, consistent with their predicted molecular weights. Endoglucanase and phytase activities in the extracellular fraction of the transformed L. reuteri culture were 0.68 and 0.42 U/mL, respectively. Transformed L. reuteri improved the feed conversion ratio of broilers from 21 to 42 days of age and over the whole feeding period. However, there was no effect on body weight gain and feed intake of chicks. Transformed L. reuteri supplementation improved levels of ash, calcium and phosphorus in tibiae at day 21 and of phosphorus at day 42. In addition, populations of Escherichia coli, Veillonella spp. and Bacteroides vulgatus were decreased, while populations of Bifidobacterium genus and Lactobacillus spp. were increased in the cecum at day 21.
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Affiliation(s)
- Lei Wang
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, Shaanxi, China.
| | - Yuxin Yang
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, Shaanxi, China.
| | - Bei Cai
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, Shaanxi, China.
| | - Pinghua Cao
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, Shaanxi, China.
| | - Mingming Yang
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, Shaanxi, China.
| | - Yulin Chen
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, Shaanxi, China.
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30
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Oral Delivery of Glucagon Like Peptide-1 by a Recombinant Lactococcus lactis. Pharm Res 2014; 31:3404-14. [DOI: 10.1007/s11095-014-1430-3] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2014] [Accepted: 06/03/2014] [Indexed: 11/26/2022]
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31
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Expression of Avian Infectious Bronchitis Virus Multi-Epitope Based Peptide EpiC inLactococcus lactisfor Oral Immunization of Chickens. Biosci Biotechnol Biochem 2014; 76:1871-6. [DOI: 10.1271/bbb.120326] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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32
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Ma SJ, Li K, Li XS, Guo XQ, Fu PF, Yang MF, Chen HY. Expression of bioactive porcine interferon-alpha in Lactobacillus casei. World J Microbiol Biotechnol 2014; 30:2379-86. [PMID: 24818858 DOI: 10.1007/s11274-014-1663-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2014] [Accepted: 05/03/2014] [Indexed: 12/29/2022]
Abstract
In this study, we constructed an expression cassette containing the inducible lac promoter and the secretion signal from an S-layer protein of Lactobacillus brevis for the expression of porcine interferon-alpha (IFN-α) in Lactobacillus casei (Lb. casei). Reverse-transcriptase PCR verified the presence of porcine IFN-α mRNA in the recombinant Lb. casei. The porcine IFN-α protein expressed in the recombinant Lb. casei was identified by both Western blot analysis and ELISA. We used various pH values and induction times to optimize the yield of IFN-α, and found that induction with 0.8% lactose for 16 h under anaerobic conditions produced the highest concentrations of IFN-α. Furthermore, the activity of porcine IFN-α in the cultural supernatant was evaluated on ST cells infected with pseudorabies virus. The results revealed that porcine IFN-α inhibited virus replication in vitro. The findings of our study indicate that recombinant Lb. casei producing porcine IFN-α has great potential for use as a novel oral antiviral agent in animal healthcare.
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Affiliation(s)
- Shi-jie Ma
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Nongye Road 63#, Zhengzhou, 450002, Henan Province, People's Republic of China
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33
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Signal peptide of cellulase. Appl Microbiol Biotechnol 2014; 98:5329-62. [DOI: 10.1007/s00253-014-5742-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2014] [Revised: 03/28/2014] [Accepted: 03/30/2014] [Indexed: 12/24/2022]
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Li X, Xing Y, Guo L, Lv X, Song H, Xi T. Oral immunization with recombinant Lactococcus lactis delivering a multi-epitope antigen CTB-UE attenuates Helicobacter pylori infection in mice. Pathog Dis 2014; 72:78-86. [PMID: 24687988 DOI: 10.1111/2049-632x.12173] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2013] [Revised: 03/18/2014] [Accepted: 03/18/2014] [Indexed: 12/23/2022] Open
Abstract
Urease is an essential virulence factor and colonization factor for Helicobacter pylori (H. pylori) and is considered as an excellent vaccine candidate antigen. However, conventional technologies for preparing an injectable vaccine require purification of the antigenic protein and preparation of an adjuvant. Lactococcus lactis NZ9000 (L. lactis) could serve as an antigen-delivering vehicle for the development of edible vaccine. In previous study, we constructed a multi-epitope vaccine, designated CTB-UE, which is composed of the mucosal adjuvant cholera toxin B subunit (CTB), three Th cell epitopes and two B-cell epitopes from urease subunits. To develop a novel type of oral vaccine against H. pylori, genetically modified L. lactis strains were established to secrete this epitope vaccine extracellularly in this study. Oral prophylactic immunization with recombinant L. lactis significantly elicited humoral anti-urease antibody responses (P < 0.001) and reduced the gastric colonization of H. pylori from 7.14 ± 0.95 to 4.68 ± 0.98 log10 CFU g(-1) stomach. This L. lactis oral vaccine offers a promising vaccine candidate for the control of H. pylori infection.
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Affiliation(s)
- Xinyang Li
- Biotechnology Center, School of Life Science and Technology, China Pharmaceutical University, Nanjing, China
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35
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Abstract
Streptococcus pneumoniae still causes severe morbidity and mortality worldwide, especially in young children and the elderly. Much effort has been dedicated to developing protein-based universal vaccines to conquer the current shortcomings of capsular vaccines and capsular conjugate vaccines, such as serotype replacement, limited coverage and high costs. A recombinant live vector vaccine delivering protective antigens is a promising way to achieve this goal. In this review, we discuss the researches using live recombinant vaccines, mainly live attenuated Salmonella and lactic acid bacteria, to deliver pneumococcal antigens. We also discuss both the limitations and the future of these vaccines.
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Volzing K, Borrero J, Sadowsky MJ, Kaznessis YN. Antimicrobial peptides targeting Gram-negative pathogens, produced and delivered by lactic acid bacteria. ACS Synth Biol 2013; 2:643-50. [PMID: 23808914 DOI: 10.1021/sb4000367] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We present results of tests with recombinant Lactococcus lactis that produce and secrete heterologous antimicrobial peptides with activity against Gram-negative pathogenic Escherichia coli and Salmonella . In an initial screening, the activities of numerous candidate antimicrobial peptides, made by solid state synthesis, were assessed against several indicator pathogenic E. coli and Salmonella strains. Peptides A3APO and Alyteserin were selected as top performers based on high antimicrobial activity against the pathogens tested and on significantly lower antimicrobial activity against L. lactis . Expression cassettes containing the signal peptide of the protein Usp45 fused to the codon-optimized sequence of mature A3APO and Alyteserin were cloned under the control of a nisin-inducible promoter PnisA and transformed into L. lactis IL1403. The resulting recombinant strains were induced to express and secrete both peptides. A3APO- and Alyteserin-containing supernatants from these recombinant L. lactis inhibited the growth of pathogenic E. coli and Salmonella by up to 20-fold, while maintaining the host's viability. This system may serve as a model for the production and delivery of antimicrobial peptides by lactic acid bacteria to target Gram-negative pathogenic bacteria populations.
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Affiliation(s)
- Katherine Volzing
- Department of Chemical
Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Juan Borrero
- Department of Chemical
Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Michael J. Sadowsky
- Department of Soil,
Water, and Climate, University of Minnesota, St. Paul, Minnesota 55108, United States
- BioTechnology Institute, University of Minnesota, St. Paul, Minnesota 55108,
United States
| | - Yiannis N. Kaznessis
- Department of Chemical
Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
- BioTechnology Institute, University of Minnesota, St. Paul, Minnesota 55108,
United States
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37
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Jiménez JJ, Borrero J, Diep DB, Gútiez L, Nes IF, Herranz C, Cintas LM, Hernández PE. Cloning, production, and functional expression of the bacteriocin sakacin A (SakA) and two SakA-derived chimeras in lactic acid bacteria (LAB) and the yeasts Pichia pastoris and Kluyveromyces lactis. J Ind Microbiol Biotechnol 2013; 40:977-93. [PMID: 23794087 DOI: 10.1007/s10295-013-1302-6] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2013] [Accepted: 05/30/2013] [Indexed: 11/25/2022]
Abstract
Mature sakacin A (SakA, encoded by sapA) and its cognate immunity protein (SakI, encoded by sapiA), and two SakA-derived chimeras mimicking the N-terminal end of mature enterocin P (EntP/SakA) and mature enterocin A (EntA/SakA) together with SakI, were fused to different signal peptides (SP) and cloned into the protein expression vectors pNZ8048 and pMG36c for evaluation of their production and functional expression by different lactic acid bacteria. The amount, antimicrobial activity, and specific antimicrobial activity of SakA and its chimeras produced by Lactococcus lactis subsp. cremoris NZ9000 depended on the SP and the expression vector. Only L. lactis NZ9000 (pNUPS), producing EntP/SakA, showed higher bacteriocin production and antimicrobial activity than the natural SakA-producer Lactobacillus sakei Lb706. The lower antimicrobial activity of the SakA-producer L. lactis NZ9000 (pNUS) and that of the EntA/SakA-producer L. lactis NZ9000 (pNUAS) could be ascribed to secretion of truncated bacteriocins. On the other hand, of the Lb. sakei Lb706 cultures transformed with the pMG36c-derived vectors only Lb. sakei Lb706 (pGUS) overproducing SakA showed a higher antimicrobial activity than Lb. sakei Lb706. Finally, cloning of SakA and EntP/SakA into pPICZαA and pKLAC2 permitted the production of SakA and EntP/SakA by recombinant Pichia pastoris X-33 and Kluyveromyces lactis GG799 derivatives although their antimicrobial activity was lower than expected from their production.
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Affiliation(s)
- Juan J Jiménez
- Departamento de Nutrición, Bromatología y Tecnología de los Alimentos, Facultad de Veterinaria, Universidad Complutense de Madrid (UCM), Avenida Puerta de Hierro, s/n, 28040, Madrid, Spain
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38
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Vertès AA. Protein Secretion Systems of Corynebacterium glutamicum. CORYNEBACTERIUM GLUTAMICUM 2013. [DOI: 10.1007/978-3-642-29857-8_13] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Abstract
The non-essential Corynebacterium glutamicum sigma factor, sigB, modulates global gene expression during the transition from exponential growth to the stationary phase. Utilizing a signal peptide derived from C. glutamicum R CgR_0949, a sigB disruption mutant able to secrete 3- to 5-fold more green fluorescence protein (GFP) and α-amylase than the wild type strain was isolated. The signal peptide selectively enabled the mutant to produce greater amounts of both proteins, which were in turn secreted in culture medium in greater quantities than previously acknowledged. A peak GFP productivity of 2.8 g/l was attained, representing the highest GFP productivity reported in C. glutamicum to date. CgR_0949 signal sequence length (30 residues), type (Tat) or the target protein identity (GFP or α-amylase) had no measurable effect on the magnitude of the protein accumulation and consequent secretion. It therefore follows that actual experimentation remains the fastest way to identify suitable signal sequences in C. glutamicum. More secretion studies may reveal even greater secretion productivity by C. glutamicum and consequently present an attractive avenue to further enhance the utility of C. glutamicum as an industrial workhorse.
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Baradaran A, Sieo CC, Foo HL, Illias RM, Yusoff K, Rahim RA. Cloning and in silico characterization of two signal peptides from Pediococcus pentosaceus and their function for the secretion of heterologous protein in Lactococcus lactis. Biotechnol Lett 2012; 35:233-8. [DOI: 10.1007/s10529-012-1059-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2012] [Accepted: 10/04/2012] [Indexed: 11/30/2022]
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Inactivation of the ybdD gene in Lactococcus lactis increases the amounts of exported proteins. Appl Environ Microbiol 2012; 78:7148-51. [PMID: 22843524 DOI: 10.1128/aem.01076-12] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Random insertional mutagenesis performed on a Lactococcus lactis reporter strain led us to identify L. lactis ybdD as a protein-overproducing mutant. In different expression contexts, the ybdD mutant shows increased levels of exported proteins and therefore constitutes a new and attractive heterologous protein production host. This study also highlights the importance of unknown regulatory processes that play a role during protein secretion.
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Wong CCM, Zhang L, Li ZJ, Wu WKK, Ren SX, Chen YC, Ng TB, Cho CH. Protective effects of cathelicidin-encoding Lactococcus lactis in murine ulcerative colitis. J Gastroenterol Hepatol 2012; 27:1205-12. [PMID: 22507188 DOI: 10.1111/j.1440-1746.2012.07158.x] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND AND AIM Intrarectal administration of mouse cathelin-related antimicrobial peptide (mCRAMP) reduced intestinal inflammation in mice. In the current study, we examined whether mCRAMP-transformed Lactococcus lactis given orally attained similar protective effects. METHOD mCRAMP was produced and secreted from the transformed L. lactis. Murine colitis was induced by ingestion of 3% dextran sulfate sodium (DSS) for 7 days. Eight or 10 log colony forming unit (cfu) L. lactis or the transformed strains with or without nisin induction were given orally as a parallel treatment with DSS. The body weight, fecal microbiota populations, clinical symptoms and histological examinations of colonic tissues were determined. Myeloperoxidase (MPO) activity and malondialdehyde (MDA) level were also evaluated to reflect the degree of inflammation. A prototype anti-inflammatory drug sulfasalazine was used as a reference drug to compare the efficacy and mechanisms of action for ulcerative colitis (UC). RESULT Compared with the control group with colitis, cathelicidin-transformed L. lactis could improve the clinical symptoms, maintain crypt integrity and preserve mucus content (P < 0.01). The number of apoptotic cells, MPO activity and MDA level were also significantly reduced (P < 0.05). The increases of fecal microbiota in colitis animals were markedly prevented (P < 0.001). Unlike mCRAMP-encoding L. lactis, effective doses of sulfasalazine only alleviated the clinical symptoms (P < 0.01) but not the mucosal damage in the colon. CONCLUSION mCRAMP-transformed L. lactis has been shown to produce mCRAMP, effectively preventing murine UC. Oral administration of this biological preparation is better than sulfasalazine for the treatment of UC.
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Affiliation(s)
- Clover Ching Man Wong
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China
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Lytic activity of LysH5 endolysin secreted by Lactococcus lactis using the secretion signal sequence of bacteriocin Lcn972. Appl Environ Microbiol 2012; 78:3469-72. [PMID: 22344638 DOI: 10.1128/aem.00018-12] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Bacteriophage endolysins have an interesting potential as antimicrobials. The endolysin LysH5, encoded by Staphylococcus aureus phage vB_SauS-phi-IPLA88, was expressed and secreted in Lactococcus lactis using the signal peptide of bacteriocin lactococcin 972 and lactococcal constitutive and inducible promoters. Up to 80 U/mg of extracellular active endolysin was detected in culture supernatants, but most of the protein (up to 323 U/mg) remained in the cell extracts.
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44
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Lv J, Huang C, Zhang X, Tan S. Extracellular secretion of anticoagulant peptide hirudin in Lactococcus lactis using SP310mut2 signal peptide. Biotechnol Lett 2011; 34:61-5. [PMID: 21901343 DOI: 10.1007/s10529-011-0740-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2011] [Accepted: 08/24/2011] [Indexed: 11/28/2022]
Abstract
Hirudin can be used as an oral anticoagulant and antithrombotic agent. The hirudin variant III gene, derived from the medicinal leech, Hirudo medicinalis, was fused to SP310mut2 signal sequence and expressed by a nisin-controlled gene expression system in Lactococcus lactis which was then grown in a 7 l fermenter. After induction with 8 ng nisin ml(-1), the product was secreted into the culture medium and accumulated up to ~2.7 mg l(-1). MALDI-TOF/MS and anticoagulant activity analyses on the purified product confirmed its authenticity. This is the first demonstration that hirudin can be extracellularly secreted and correctly processed in L. lactis.
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Affiliation(s)
- Jing Lv
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, 211# mailbox, 24 Tongjia Street, Nanjing, 210009, People's Republic of China.
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Pontes DS, de Azevedo MSP, Chatel JM, Langella P, Azevedo V, Miyoshi A. Lactococcus lactis as a live vector: heterologous protein production and DNA delivery systems. Protein Expr Purif 2011; 79:165-75. [PMID: 21704169 DOI: 10.1016/j.pep.2011.06.005] [Citation(s) in RCA: 108] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2011] [Revised: 06/07/2011] [Accepted: 06/08/2011] [Indexed: 11/30/2022]
Abstract
Lactic acid bacteria (LAB), widely used in the food industry, are present in the intestine of most animals, including humans. The potential use of these bacteria as mucosal delivery vehicles for vaccinal, medical or technological use has been extensively investigated. Lactococcus lactis, a LAB species, is a potential candidate for the production of biologically useful proteins and for plasmid DNA delivery to eukaryotic cells. Several delivery systems have been developed to target heterologous proteins to a specific cell location (i.e., cytoplasm, cell wall or extracellular medium) and more recently to efficiently transfer DNA to eukaryotic cells. A promising application of L. lactis is its use for the development of live mucosal vaccines. Here, we have reviewed the expression of heterologous protein and the various delivery systems developed for L. lactis, as well as its use as an oral vaccine carrier.
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Affiliation(s)
- Daniela Santos Pontes
- Laboratório de Genética Celular e Molecular, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte-MG, Brazil
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Ng DT, Sarkar CA. Nisin-inducible secretion of a biologically active single-chain insulin analog by Lactococcus lactis NZ9000. Biotechnol Bioeng 2011; 108:1987-96. [DOI: 10.1002/bit.23130] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2010] [Revised: 01/25/2011] [Accepted: 03/03/2011] [Indexed: 12/12/2022]
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de Moreno de Leblanc A, Del Carmen S, Zurita-Turk M, Santos Rocha C, van de Guchte M, Azevedo V, Miyoshi A, Leblanc JG. Importance of IL-10 modulation by probiotic microorganisms in gastrointestinal inflammatory diseases. ISRN GASTROENTEROLOGY 2011; 2011:892971. [PMID: 21991534 PMCID: PMC3168568 DOI: 10.5402/2011/892971] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 11/18/2010] [Accepted: 12/23/2010] [Indexed: 12/13/2022]
Abstract
Lactic acid bacteria (LAB) represent a heterogeneous group of microorganisms that are naturally present in many foods and possess a wide range of therapeutic properties. The aim of this paper is to present an overview of the current expanding knowledge of one of the mechanisms by which LAB and other probiotic microorganisms participate in the prevention and treatment of gastrointestinal inflammatory disease through their immune-modulating properties. A special emphasis will be placed on the critical role of the anti-inflammatory cytokine IL-10, and a brief overview of the uses of genetically engineered LAB that produce this important immune response mediator will also be discussed. Thus, this paper will demonstrate the critical role that IL-10 plays in gastrointestinal inflammatory diseases and how probiotics could be used in their treatment.
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Affiliation(s)
- Alejandra de Moreno de Leblanc
- Centro de Referencia para Lactobacilos (CERELA-CONICET), Chacabuco 145, San Miguel de Tucumán, T4000ILC Tucumán, Argentina
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Kakeshita H, Kageyama Y, Ara K, Ozaki K, Nakamura K. Propeptide of Bacillus subtilis amylase enhances extracellular production of human interferon-α in Bacillus subtilis. Appl Microbiol Biotechnol 2010; 89:1509-17. [DOI: 10.1007/s00253-010-2954-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2010] [Revised: 10/12/2010] [Accepted: 10/14/2010] [Indexed: 11/28/2022]
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Lim SHE, Jahanshiri F, Rahim RA, Sekawi Z, Yusoff K. Surface display of respiratory syncytial virus glycoproteins in Lactococcus lactis NZ9000. Lett Appl Microbiol 2010; 51:658-64. [PMID: 20973806 DOI: 10.1111/j.1472-765x.2010.02950.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
AIMS A system for displaying heterologous respiratory syncytial virus (RSV) glycoproteins on the surface of Lactococcus lactis NZ9000 was developed. METHODS AND RESULTS Fusion of the USP45 signal peptide and the cA (C terminus of the peptidoglycan-binding) domains of AcmA, a major autolysin from L. lactis, to the N- and C-terminal of the target proteins, respectively, was carried out. The target protein was the major immunogenic domain of either the F (40.17-kDa) or G (11.49-kDa) glycoprotein domains of the RSV. Whole-cell ELISA readings obtained after 24 h of induction showed an increase in protein expression as the cA domain repeats increased, for the G glycoprotein of RSV. On the other hand, the F glycoprotein indicated decreasing expression levels as the number of cA domain repeats increased. The difference in the expression levels of the F and G domains may be attributed to the different sizes of the antigenic domains. CONCLUSIONS The size and properties of the target proteins are vital in determining the amount of antigenic domains being displayed on the surface of live cells. SIGNIFICANCE AND IMPACT OF THE STUDY The system demonstrated here can aid in the utilization of the generally regarded as safe (GRAS) bacteria L. lactis, as a vaccine delivery vehicle to surface display the antigenic proteins of RSV.
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Affiliation(s)
- S H E Lim
- Department of Microbiology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Selangor, Malaysia
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Engineered lactic acid bacterium Lactococcus lactis capable of binding antibodies and tumor necrosis factor alpha. Appl Environ Microbiol 2010; 76:6928-32. [PMID: 20802083 DOI: 10.1128/aem.00190-10] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
We have optimized the display of the B domain of staphylococcal protein A on the surface of Lactococcus lactis. The maximum binding capacity was estimated at 0.146 μg of antibody per 10⁸ cells and was sustained at 86% after treatment with simulated gastric juice. A tumor necrosis factor alpha (TNF-α)-binding affibody was also displayed and bound TNF-α, which could be useful in the treatment of inflammatory bowel disease.
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