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Wang L, Hu J, Li K, Zhao Y, Zhu M. Advancements in gene editing technologies for probiotic-enabled disease therapy. iScience 2024; 27:110791. [PMID: 39286511 PMCID: PMC11403445 DOI: 10.1016/j.isci.2024.110791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/19/2024] Open
Abstract
Probiotics typically refer to microorganisms that have been identified for their health benefits, and they are added to foods or supplements to promote the health of the host. A growing number of probiotic strains have been identified lately and developed into valuable regulatory pharmaceuticals for nutritional and medical applications. Gene editing technologies play a crucial role in addressing the need for safe and therapeutic probiotics in disease treatment. These technologies offer valuable assistance in comprehending the underlying mechanisms of probiotic bioactivity and in the development of advanced probiotics. This review aims to offer a comprehensive overview of gene editing technologies applied in the engineering of both traditional and next-generation probiotics. It further explores the potential for on-demand production of customized products derived from enhanced probiotics, with a particular emphasis on the future of gene editing in the development of live biotherapeutics.
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Affiliation(s)
- Lixuan Wang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, China, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jing Hu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, China, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Kun Li
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, China, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yuliang Zhao
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, China, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Motao Zhu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, China, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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Li F, Zhao H, Sui L, Yin F, Liu X, Guo G, Li J, Jiang Y, Cui W, Shan Z, Zhou H, Wang L, Qiao X, Tang L, Wang X, Li Y. Assessing immunogenicity of CRISPR-NCas9 engineered strain against porcine epidemic diarrhea virus. Appl Microbiol Biotechnol 2024; 108:248. [PMID: 38430229 PMCID: PMC10908614 DOI: 10.1007/s00253-023-12989-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 12/18/2023] [Accepted: 12/26/2023] [Indexed: 03/03/2024]
Abstract
Porcine epidemic diarrhea (PED) caused by porcine epidemic diarrhea virus (PEDV), is an acute and highly infectious disease, resulting in substantial economic losses in the pig industry. Given that PEDV primarily infects the mucosal surfaces of the intestinal tract, it is crucial to improve the mucosal immunity to prevent viral invasion. Lactic acid bacteria (LAB) oral vaccines offer unique advantages and potential applications in combatting mucosal infectious diseases, making them an ideal approach for controlling PED outbreaks. However, traditional LAB oral vaccines use plasmids for exogenous protein expression and antibiotic genes as selection markers. Antibiotic genes can be diffused through transposition, transfer, or homologous recombination, resulting in the generation of drug-resistant strains. To overcome these issues, genome-editing technology has been developed to achieve gene expression in LAB genomes. In this study, we used the CRISPR-NCas9 system to integrate the PEDV S1 gene into the genome of alanine racemase-deficient Lactobacillus paracasei △Alr HLJ-27 (L. paracasei △Alr HLJ-27) at the thymidylate synthase (thyA) site, generating a strain, S1/△Alr HLJ-27. We conducted immunization assays in mice and piglets to evaluate the level of immune response and evaluated its protective effect against PEDV through challenge tests in piglets. Oral administration of the strain S1/△Alr HLJ-27 in mice and piglets elicited mucosal, humoral, and cellular immune responses. The strain also exhibited a certain level of resistance against PEDV infection in piglets. These results demonstrate the potential of S1/△Alr HLJ-27 as an oral vaccine candidate for PEDV control. KEY POINTS: • A strain S1/△Alr HLJ-27 was constructed as the candidate for an oral vaccine. • Immunogenicity response and challenge test was carried out to analyze the ability of the strain. • The strain S1/△Alr HLJ-27 could provide protection for piglets to a certain extent.
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Affiliation(s)
- Fengsai Li
- Hebei Key Laboratory of Preventive Veterinary Medicine, College of Animal Science and Technology, Hebei Normal University of Science and Technology, Qinhuangdao, 066004, China
| | - Haiyuan Zhao
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, China
| | - Ling Sui
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, China
| | - Fangjie Yin
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, China
| | - Xinzi Liu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, China
| | - Guihai Guo
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, China
| | - Jiaxuan Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, China
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Harbin, 150030, China
| | - Yanping Jiang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, China
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Harbin, 150030, China
| | - Wen Cui
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, China
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Harbin, 150030, China
| | - Zhifu Shan
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, China
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Harbin, 150030, China
| | - Han Zhou
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, China
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Harbin, 150030, China
| | - Li Wang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, China
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Harbin, 150030, China
| | - Xinyuan Qiao
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, China
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Harbin, 150030, China
| | - Lijie Tang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, China
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Harbin, 150030, China
| | - Xiaona Wang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, China.
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Harbin, 150030, China.
| | - Yijing Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, China.
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Harbin, 150030, China.
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Song HC, Yang YX, Lan QG, Cong W. Immunological effects of recombinant Lactobacillus casei expressing pilin MshB fused with cholera toxin B subunit adjuvant as an oral vaccine against Aeromonas veronii infection in crucian carp. FISH & SHELLFISH IMMUNOLOGY 2023:108934. [PMID: 37419434 DOI: 10.1016/j.fsi.2023.108934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 06/08/2023] [Accepted: 07/03/2023] [Indexed: 07/09/2023]
Abstract
Aeromonas veronii is a zoonotic agent capable of infecting fish and mammals, including humans, posing a serious threat to the development of aquaculture and public health safety. Currently, few effective vaccines are available through convenient routes against A. veronii infection. Herein, we developed vaccine candidates by inserting MSH type VI pili B (MshB) from A. veronii as an antigen and cholera toxin B subunit (CTB) as a molecular adjuvant into Lactobacillus casei and evaluated their immunological effect as vaccines in a crucian carp (Carassius auratus) model. The results suggested that recombinant L. casei Lc-pPG-MshB and Lc-pPG-MshB-CTB can be stably inherited for more than 50 generations. Oral administration of recombinant L. casei vaccine candidates stimulated the production of high levels of serum-specific immunoglobulin M (IgM) and increased the activity of acid phosphatase (ACP), alkaline phosphatase (AKP) superoxide dismutase (SOD), lysozyme (LZM), complement 3 (C3) and C4 in crucian carp (carassius auratus) compared to the control group (Lc-pPG612 group and PBS group) without significant changes. Moreover, the expression levels of interleukin-10 (IL-10), interleukin-1β (IL-1β), tumour necrosis factor-α (TNF-α) and transforming growth factor-β (TGF-β) genes in the gills, liver, spleen, kidney and gut of crucian carp orally immunized with recombinant L. casei were significantly upregulated compared to the control groups, indicating that recombinant L. casei induced a significant cellular immune response. In addition, viable recombinant L. casei can be detected and stably colonized in the intestine tract of crucian carp. Particularly, crucian carp immunized orally with Lc-pPG-MshB and Lc-pPG-MshB-CTB exhibited higher survival rates (48% for Lc-pPG-MshB and 60% for Lc-pPG-MshB-CTB) and significantly reduced loads of A. veronii in the major immune organs after A. veronii challenge. Our findings indicated that both recombinant L. casei strains provide favorable immune protection, with Lc-pPG-MshB-CTB in particular being more effective and promising as an ideal candidate for oral vaccination.
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Affiliation(s)
- Hai-Chao Song
- Marine College, Shandong University, Weihai, Shandong Province, 264209, PR China
| | - Yi-Xuan Yang
- College of Veterinary Medicine, College of Animal Science and Technology, Jilin Agricultural University, Changchun, 130118, PR China
| | - Qi-Guan Lan
- College of Veterinary Medicine, College of Animal Science and Technology, Jilin Agricultural University, Changchun, 130118, PR China
| | - Wei Cong
- Marine College, Shandong University, Weihai, Shandong Province, 264209, PR China.
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Li HJ, Yang BT, Sun YF, Zhao T, Hao ZP, Gu W, Sun MX, Cong W, Kang YH. Oral vaccination with recombinant Lactobacillus casei with surface displayed OmpK fused to CTB as an adjuvant against Vibrio mimicus infection in Carassius auratus. FISH & SHELLFISH IMMUNOLOGY 2023; 135:108659. [PMID: 36868535 DOI: 10.1016/j.fsi.2023.108659] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Revised: 02/27/2023] [Accepted: 02/28/2023] [Indexed: 06/18/2023]
Abstract
Vibrio mimicus (V. mimicus) is a pathogenic bacterium that causes diseases in humans and various aquatic animals. A particularly efficient way to provide protection against V. mimicus is through vaccination. However, there are few commercial vaccines against V. mimics, especially oral vaccines. In our study, two surface-display recombinant Lactobacillus casei (L. casei) Lc-pPG-OmpK and Lc-pPG-OmpK-CTB were constructed using L. casei ATCC393 as an antigen delivery vector, outer membrane protein K (OmpK) of V. mimicus as an antigen, and cholera toxin B subunit (CTB) as a molecular adjuvant; furthermore, the immunological effects of recombinant L.casei in Carassius auratus (C. auratus) were assessed. The results indicated that oral recombinant L.casei Lc-pPG-OmpK and Lc-pPG-OmpK-CTB stimulated higher levels of serum-specific immunoglobulin M (IgM) and increased the activity of acid phosphatase (ACP), alkaline phosphatase (AKP), superoxide dismutase (SOD), lysozyme (LYS), lectin, C3, and C4 in C. auratus, compared with control groups (Lc-pPG group and PBS group). Furthermore, the expression of interleukin-1β (IL-1β), interleukin-10 (IL-10), tumor necrosis factor-α (TNF-α), and transforming growth factor-β (TGF-β) in the liver, spleen, head kidney, hind intestine and gills of C. auratus was significantly increased, compared with that in the controls. These results demonstrated that the two recombinant L. casei strains could effectively trigger humoral and cellular immunity in C. auratus. In addition, two recombinant L.casei strains were able to survive and colonize the intestine of C. auratus. Importantly, after being challenged with V. mimicus, C. auratus fed Lc-pPG-OmpK and Lc-pPG-OmpK-CTB exhibited greater survival rates than the controls (52.08% and 58.33%, respectively). The data showed that recombinant L. casei could elicit a protective immunological response in C. auratus. The effect of the Lc-pPG-OmpK-CTB group was better than that of the Lc-pPG-OmpK group, and Lc-pPG-OmpK-CTB was found to be an effective candidate for oral vaccination.
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Affiliation(s)
- Hong-Jin Li
- Marine College, Shandong University, Weihai, 264209, China; College of Veterinary Medicine / College of Animal Science and Technology, Jilin Agricultural University, Changchun, 130118, China
| | - Bin-Tong Yang
- Marine College, Shandong University, Weihai, 264209, China; Shandong Fu Han Ocean Sci-Tech Co., Ltd, Haiyang, 265100, China
| | - Yu-Feng Sun
- College of Veterinary Medicine / College of Animal Science and Technology, Jilin Agricultural University, Changchun, 130118, China
| | - Tong Zhao
- Marine College, Shandong University, Weihai, 264209, China; College of Veterinary Medicine / College of Animal Science and Technology, Jilin Agricultural University, Changchun, 130118, China
| | - Zhi-Peng Hao
- Marine College, Shandong University, Weihai, 264209, China
| | - Wei Gu
- Shandong Key Laboratory of Animal Microecological Preparation, Shandong Baolai-Leelai Bio-Tech Co., Ltd, Tai'an, 271000, China
| | - Meng-Xia Sun
- Shandong Fu Han Ocean Sci-Tech Co., Ltd, Haiyang, 265100, China
| | - Wei Cong
- Marine College, Shandong University, Weihai, 264209, China.
| | - Yuan-Huan Kang
- Marine College, Shandong University, Weihai, 264209, China; Shandong Key Laboratory of Animal Microecological Preparation, Shandong Baolai-Leelai Bio-Tech Co., Ltd, Tai'an, 271000, China.
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Pan N, Liu Y, Zhang H, Xu Y, Bao X, Sheng S, Liang Y, Liu B, Lyu Y, Li H, Ma F, Pan H, Wang X. Oral Vaccination with Engineered Probiotic Limosilactobacillus reuteri Has Protective Effects against Localized and Systemic Staphylococcus aureus Infection. Microbiol Spectr 2023; 11:e0367322. [PMID: 36723073 PMCID: PMC10100842 DOI: 10.1128/spectrum.03673-22] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 01/14/2023] [Indexed: 02/02/2023] Open
Abstract
Staphylococcus aureus is a Gram-positive bacterium responsible for most hospital-acquired (nosocomial) and community-acquired infections worldwide. The only therapeutic strategy against S. aureus-induced infections, to date, is antibiotic treatment. A protective vaccine is urgently needed in view of the emergence of antibiotic-resistant strains associated with high-mortality cases; however, no such vaccine is currently available. In our previous work, the feasibility of implementing a Lactobacillus delivery system for development of S. aureus oral vaccine was first discussed. Here, we describe systematic screening and evaluation of protective effects of engineered Lactobacillus against S. aureus infection in terms of different delivery vehicle strains and S. aureus antigens and in localized and systemic infection models. Limosilactobacillus reuteri WXD171 was selected as the delivery vehicle strain based on its tolerance of the gastrointestinal environment, adhesion ability, and antimicrobial activities in vitro and in vivo. We designed, constructed, and evaluated engineered L. reuteri strains expressing various S. aureus antigens. Among these, engineered L. reuteri WXD171-IsdB displayed effective protection against S. aureus-induced localized infection (pneumonia and skin infection) and, furthermore, a substantial survival benefit in systemic infection (sepsis). WXD171-IsdB induced mucosal responses in gut-associated lymphoid tissues, as evidenced by increased production of secretory IgA and interleukin 17A (IL-17A) and proliferation of lymphocytes derived from Peyer's patches. The probiotic L. reuteri-based oral vaccine appears to have strong potential as a prophylactic agent against S. aureus infections. Our findings regarding utilization of Lactobacillus delivery system in S. aureus vaccine development support the usefulness of this live vaccination strategy and its potential application in next-generation vaccine development. IMPORTANCE We systematically screened and evaluated protective effects of engineered Lactobacillus against S. aureus infection in terms of differing delivery vehicle strains and S. aureus antigens and in localized and systemic infection models. Engineered L. reuteri was developed and showed strong protective effects against both types of S. aureus-induced infection. Our findings regarding the utilization of a Lactobacillus delivery system in S. aureus vaccine development support the usefulness of this live vaccination strategy and its potential application in next-generation vaccine development.
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Affiliation(s)
- Na Pan
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Yang Liu
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Haochi Zhang
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Ying Xu
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Xuemei Bao
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Shouxin Sheng
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Yanchen Liang
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Bohui Liu
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Yueqing Lyu
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Haotian Li
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Fangfei Ma
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Haiting Pan
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, China
- Basic Medical College, Inner Mongolia Medical University, Hohhot, China
| | - Xiao Wang
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, China
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Chen C, Zu S, Zhang D, Zhao Z, Ji Y, Xi H, Shan X, Qian A, Han W, Gu J. Oral vaccination with recombinant Lactobacillus casei expressing Aha1 fused with CTB as an adjuvant against Aeromonas veronii in common carp (Cyprinus carpio). Microb Cell Fact 2022; 21:114. [PMID: 35698139 PMCID: PMC9191526 DOI: 10.1186/s12934-022-01839-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Accepted: 05/22/2022] [Indexed: 11/19/2022] Open
Abstract
Aeromonas veronii (A. veronii) is a pathogenic that can infect human, animal and aquatic organisms, in which poses a huge threat to the health of many aquatic organisms such as Cyprinus carpio. In this study, Lactobacillus casei (L. casei) strain CC16 was used as antigen deliver carrier and fused with cholera toxin B subunit (CTB) as an adjuvant to construct the recombinant L. casei pPG-Aha1/Lc CC16(surface-displayed) and pPG-Aha1-CTB/Lc CC16(surface-displayed) expressing Aha1 protein of A. veronii, respectively. And the immune responses in Cyprinus carpio by oral route was explored. Our results demonstrated that the recombinant strains could stimulate high serum specific antibody immunoglobulin M (IgM) and induce a stronger acid phosphatase (ACP), alkaline phosphatase (AKP), C3, C4, lysozyme (LZM), Lectin and superoxide dismutase (SOD) activity in Cyprinus carpio compared with control groups. Meanwhile, the expression of Interleukin-10 (IL-10), Interleukin-1β (IL-1β), Tumor Necrosis Factor-α (TNF-α), immunoglobulin Z1 (IgZ1) and immunoglobulin Z2 (IgZ2) in the tissues were significantly upregulated compared with Lc-pPG or PBS groups, indicating that humoral and cell immune response were triggered. Additionally, recombinant L. casei could survive and colonize in fish intestine. Significantly, recombinant L. casei provides immune protection against A. veronii infection, which Cyprinus carpio received pPG-Aha1-CTB/Lc CC16 (64.29%) and pPG-Aha1/Lc CC16 (53.57%) had higher survival rates compared with the controls. Thus, we demonstrated that recombinant pPG-Aha1/Lc CC16 and pPG-Aha1-CTB/Lc CC16 may be the promising strategy for the development of an oral vaccine against A. veronii.
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Affiliation(s)
- Chong Chen
- State Key Laboratory for Zoonotic Diseases, Key Laboratory of Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, 130062, People's Republic of China
| | - Shuo Zu
- Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun, 130025, People's Republic of China
| | - Dongxing Zhang
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, 130118, People's Republic of China
| | - Zelin Zhao
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, 130118, People's Republic of China
| | - Yalu Ji
- State Key Laboratory for Zoonotic Diseases, Key Laboratory of Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, 130062, People's Republic of China
| | - Hengyu Xi
- State Key Laboratory for Zoonotic Diseases, Key Laboratory of Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, 130062, People's Republic of China
| | - Xiaofeng Shan
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, 130118, People's Republic of China
| | - Aidong Qian
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, 130118, People's Republic of China.
| | - Wenyu Han
- State Key Laboratory for Zoonotic Diseases, Key Laboratory of Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, 130062, People's Republic of China. .,Jiangsu Co-Innovation Center for the Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, 225009, People's Republic of China.
| | - Jingmin Gu
- State Key Laboratory for Zoonotic Diseases, Key Laboratory of Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, 130062, People's Republic of China. .,Jiangsu Co-Innovation Center for the Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, 225009, People's Republic of China.
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Khan MZ, Li F, Huang X, Nouman M, Bibi R, Fan X, Zhou H, Shan Z, Wang L, Jiang Y, Cui W, Qiao X, Li Y, Wang X, Tang L. Oral Immunization of Chickens with Probiotic Lactobacillus crispatus Constitutively Expressing the α-β2-ε-β1 Toxoids to Induce Protective Immunity. Vaccines (Basel) 2022; 10:vaccines10050698. [PMID: 35632454 PMCID: PMC9147743 DOI: 10.3390/vaccines10050698] [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: 04/03/2022] [Revised: 04/26/2022] [Accepted: 04/26/2022] [Indexed: 02/04/2023] Open
Abstract
Clostridium perfringens (C. perfringens) is a bacterium that commonly causes zoonotic disease. The pathogenicity of C. perfringens is a result of the combined action of α, β, and ε exotoxins. In this study, Lactobacillus crispatus (pPG-T7g10/L. crispatus) expressing the main toxoids of C. perfringens, α, ε, β1, and β2, with EGFP-labeling, was constructed, and the protective effect was estimated in chickens. The α-β2-ε-β1 toxoid was constitutively expressed for confirmation by laser confocal microscopy and western blotting, and its immunogenicity was analyzed by enzyme-linked immunosorbent assay (ELISA) and immunohistochemical assays. After booster immunization, the probiotic vaccine group showed significantly higher levels (p < 0.05) of specific secretory IgA (sIgA) and IgY antibodies in the serum and intestinal mucus. Furthermore, the levels of cytokines, including interferon (IFN)-γ, interleukin (lL)-2, IL-4, IL-10, IL-12, and IL-17, and the proliferation of spleen lymphocytes in chickens orally immunized with pPG-E-α-β2-ε-β1/L. crispatus increased significantly. Histopathological observations showed that the intestinal pathological changes in chickens immunized with pPG-E-α-β2ε-β1/L. crispatus were significantly alleviated. These data reveal that the probiotic vaccine could stimulate mucosal, cellular, and humoral immunity and provide an active defense against the toxins of C. perfringens, suggesting a promising candidate for oral vaccines against C. perfringens.
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Affiliation(s)
- Mohammad Zeb Khan
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China; (M.Z.K.); (F.L.); (X.H.); (X.F.); (H.Z.); (Z.S.); (L.W.); (Y.J.); (W.C.); (X.Q.); (Y.L.)
| | - Fengsai Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China; (M.Z.K.); (F.L.); (X.H.); (X.F.); (H.Z.); (Z.S.); (L.W.); (Y.J.); (W.C.); (X.Q.); (Y.L.)
| | - Xuewei Huang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China; (M.Z.K.); (F.L.); (X.H.); (X.F.); (H.Z.); (Z.S.); (L.W.); (Y.J.); (W.C.); (X.Q.); (Y.L.)
| | | | - Roshna Bibi
- Department of Boyany, University of Swat, Mingora 19200, Pakistan;
| | - Xiaolong Fan
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China; (M.Z.K.); (F.L.); (X.H.); (X.F.); (H.Z.); (Z.S.); (L.W.); (Y.J.); (W.C.); (X.Q.); (Y.L.)
| | - Han Zhou
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China; (M.Z.K.); (F.L.); (X.H.); (X.F.); (H.Z.); (Z.S.); (L.W.); (Y.J.); (W.C.); (X.Q.); (Y.L.)
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Harbin 150030, China
| | - Zhifu Shan
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China; (M.Z.K.); (F.L.); (X.H.); (X.F.); (H.Z.); (Z.S.); (L.W.); (Y.J.); (W.C.); (X.Q.); (Y.L.)
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Harbin 150030, China
| | - Li Wang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China; (M.Z.K.); (F.L.); (X.H.); (X.F.); (H.Z.); (Z.S.); (L.W.); (Y.J.); (W.C.); (X.Q.); (Y.L.)
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Harbin 150030, China
| | - Yanping Jiang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China; (M.Z.K.); (F.L.); (X.H.); (X.F.); (H.Z.); (Z.S.); (L.W.); (Y.J.); (W.C.); (X.Q.); (Y.L.)
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Harbin 150030, China
| | - Wen Cui
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China; (M.Z.K.); (F.L.); (X.H.); (X.F.); (H.Z.); (Z.S.); (L.W.); (Y.J.); (W.C.); (X.Q.); (Y.L.)
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Harbin 150030, China
| | - Xinyuan Qiao
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China; (M.Z.K.); (F.L.); (X.H.); (X.F.); (H.Z.); (Z.S.); (L.W.); (Y.J.); (W.C.); (X.Q.); (Y.L.)
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Harbin 150030, China
| | - Yijing Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China; (M.Z.K.); (F.L.); (X.H.); (X.F.); (H.Z.); (Z.S.); (L.W.); (Y.J.); (W.C.); (X.Q.); (Y.L.)
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Harbin 150030, China
| | - Xiaona Wang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China; (M.Z.K.); (F.L.); (X.H.); (X.F.); (H.Z.); (Z.S.); (L.W.); (Y.J.); (W.C.); (X.Q.); (Y.L.)
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Harbin 150030, China
- Correspondence: (X.W.); (L.T.); Tel.: +86-451-55190824 (L.T.); Fax: +86-451-55190363 (L.T.)
| | - Lijie Tang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China; (M.Z.K.); (F.L.); (X.H.); (X.F.); (H.Z.); (Z.S.); (L.W.); (Y.J.); (W.C.); (X.Q.); (Y.L.)
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Harbin 150030, China
- Correspondence: (X.W.); (L.T.); Tel.: +86-451-55190824 (L.T.); Fax: +86-451-55190363 (L.T.)
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8
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Guo T, Gao C, Hao J, Lu X, Xie K, Wang X, Li J, Zhou H, Cui W, Shan Z, Jiang Y, Qiao X, Tang L, Wang L, Li Y. Strategy of Developing Oral Vaccine Candidates Against Co-infection of Porcine Diarrhea Viruses Based on a Lactobacillus Delivery System. Front Microbiol 2022; 13:872550. [PMID: 35444630 PMCID: PMC9014262 DOI: 10.3389/fmicb.2022.872550] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Accepted: 03/07/2022] [Indexed: 12/18/2022] Open
Abstract
The number of co-infections with multiple porcine diarrhea viruses has increased in recent years. Inducing mucosal immunity through oral immunization is an effective approach for controlling these pathogens. To generate a multi-pathogen vaccine against viral co-infection, we employed the Lactobacillus vector platform, which was previously used to generate potent candidate vaccines against various diseases. Two strategies were used to test the protective efficiency of recombinant Lactobacillus against multiple diarrhea viruses. First, we used a mixture of recombinant Lactobacillus separately expressing antigens of transmissible gastroenteritis virus (TGEV), porcine epidemic diarrhea virus (PEDV), and porcine rotavirus (PoRV). Next, we used a recombinant Lactobacillus expressing an antigen fusion protein of the above viruses. Twenty-four newborn piglets were divided into three groups and orally immunized with a mixture of recombinant Lactobacillus, recombinant Lactobacillus expressing the antigen fusion protein, or sterile phosphate-buffered saline daily for seven consecutive days after birth. After immunization, the piglets were randomly selected from each group for oral administration of PEDV, and these piglets were then cohabited with piglets without PEDV infection for 7 days. The protective effect against PEDV was evaluated based on clinical symptoms, viral shedding, and intestinal pathological damage. Piglets immunized with recombinant Lactobacillus showed specific mucosal and humoral immune responses to the three viruses and were protected against severe diarrhea and intestinal pathology. Our results highlight the potential of an oral multi-pathogen vaccine based on Lactobacillus to prevent transmission and limit the severity of viral co-infection.
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Affiliation(s)
- Tiantian Guo
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Chong Gao
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Jianhui Hao
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Xiao Lu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Kun Xie
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Xiaona Wang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Jiaxuan Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Han Zhou
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Wen Cui
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Zhifu Shan
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Yanping Jiang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Xinyuan Qiao
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Lijie Tang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Li Wang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Yijing Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
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9
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Immunogenicity of Recombinant-Deficient Lactobacillus casei with Complementary Plasmid Expressing Alanine Racemase Gene and Core Neutralizing Epitope Antigen against Porcine Epidemic Diarrhea Virus. Vaccines (Basel) 2021; 9:vaccines9101084. [PMID: 34696192 PMCID: PMC8537014 DOI: 10.3390/vaccines9101084] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 09/22/2021] [Accepted: 09/24/2021] [Indexed: 01/16/2023] Open
Abstract
Porcine epidemic diarrhea (PED), which is caused by the porcine epidemic diarrhea virus (PEDV), has occurred worldwide and poses a serious threat to the pig industry. Intestine is the main function site of PEDV; therefore, it is important to develop an oral mucosal immunity vaccine against this virus infection. Most traditional plasmid delivery vectors use antibiotic genes as a selective marker, easily leading to antibiotic accumulation and gene contamination. In this study, to explore whether the alanine racemase gene (Alr) could be used as a screening marker and develop an efficient oral vaccine against PEDV infection, a recombinant strain was constructed using Lactobacillus casei with Alr deletion (L. casei ΔAlr W56) to deliver the Alr gene and a core-neutralizing epitope (COE) antigen. This recombinant bacterium efficiently induced secretory immunoglobulin A (SIgA)-based mucosal and immunoglobulin G (IgG)-based humoral immune responses via oral vaccination in mice. Compared to the other strains, the recombinant bacteria were able to grow without the addition of D-alanine, revealing that Alr in the plasmid could function normally in defective bacteria. This oral mucosal vaccine would provide a useful strategy to substitute the application of antibiotics in the future and induce efficient immune responses against PEDV infection.
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10
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Pan N, Liu B, Bao X, Zhang H, Sheng S, Liang Y, Pan H, Wang X. Oral Delivery of Novel Recombinant Lactobacillus Elicit High Protection against Staphylococcus aureus Pulmonary and Skin Infections. Vaccines (Basel) 2021; 9:vaccines9090984. [PMID: 34579221 PMCID: PMC8473125 DOI: 10.3390/vaccines9090984] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 08/26/2021] [Accepted: 08/30/2021] [Indexed: 12/24/2022] Open
Abstract
Staphylococcus aureus is a leading cause of nosocomial and community-associated infection worldwide; however, there is no licensed vaccine available. S. aureus initiates infection via the mucosa; therefore, a mucosal vaccine is likely to be a promising approach against S. aureus infection. Lactobacilli, a non-pathogenic bacterium, has gained increasing interest as a mucosal delivery vehicle. Hence, we attempted to develop an oral S. aureus vaccine based on lactobacilli to cushion the stress of drug resistance and vaccine needs. In this study, we designed, constructed, and evaluated recombinant Lactobacillus strains synthesizing S. aureus nontoxic mutated α-hemolysins (HlaH35L). The results from animal clinical trials showed that recombinant Lactobacillus can persist for at least 72 h and can stably express heterologous protein in vivo. Recombinant L. plantarum WXD234 (pNZ8148-Hla) could induce robust mucosal immunity in the GALT, as evidenced by a significant increase in IgA and IL-17 production and the strong proliferation of T-lymphocytes derived from Peyer’s patches. WXD234 (pNZ8148-Hla) conferred up to 83% protection against S. aureus pulmonary infection and significantly reduced the abscess size in a S. aureus skin infection model. Of particular interest is the sharp reduction of the protective effect offered by WXD234 (pNZ8148-Hla) vaccination in γδ T cell-deficient or IL-17-deficient mice. In conclusion, for the first time, genetically engineered Lactobacillus WXD234 (pNZ8148-Hla) as an oral vaccine induced superior mucosal immunity, which was associated with high protection against pulmonary and skin infections caused by S. aureus. Taken together, our findings suggest the great potential for a delivery system based on lactobacilli and provide experimental data for the development of mucosal vaccines for S. aureus.
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Affiliation(s)
- Na Pan
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, Inner Mongolia University, Hohhot 010070, China; (N.P.); (B.L.); (X.B.); (H.Z.); (S.S.); (Y.L.); (H.P.)
| | - Bohui Liu
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, Inner Mongolia University, Hohhot 010070, China; (N.P.); (B.L.); (X.B.); (H.Z.); (S.S.); (Y.L.); (H.P.)
| | - Xuemei Bao
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, Inner Mongolia University, Hohhot 010070, China; (N.P.); (B.L.); (X.B.); (H.Z.); (S.S.); (Y.L.); (H.P.)
| | - Haochi Zhang
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, Inner Mongolia University, Hohhot 010070, China; (N.P.); (B.L.); (X.B.); (H.Z.); (S.S.); (Y.L.); (H.P.)
| | - Shouxin Sheng
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, Inner Mongolia University, Hohhot 010070, China; (N.P.); (B.L.); (X.B.); (H.Z.); (S.S.); (Y.L.); (H.P.)
| | - Yanchen Liang
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, Inner Mongolia University, Hohhot 010070, China; (N.P.); (B.L.); (X.B.); (H.Z.); (S.S.); (Y.L.); (H.P.)
| | - Haiting Pan
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, Inner Mongolia University, Hohhot 010070, China; (N.P.); (B.L.); (X.B.); (H.Z.); (S.S.); (Y.L.); (H.P.)
- Basic Medical College, Inner Mongolia Medical University, Hohhot 010110, China
| | - Xiao Wang
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, Inner Mongolia University, Hohhot 010070, China; (N.P.); (B.L.); (X.B.); (H.Z.); (S.S.); (Y.L.); (H.P.)
- Correspondence:
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11
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Zang Y, Tian Y, Li Y, Xue R, Hu L, Zhang D, Sun S, Wang G, Chen J, Lan Z, Lin S, Jiang S. Recombinant Lactobacillus acidophilus expressing S 1 and S 2 domains of porcine epidemic diarrhea virus could improve the humoral and mucosal immune levels in mice and sows inoculated orally. Vet Microbiol 2020; 248:108827. [PMID: 32891955 PMCID: PMC7428733 DOI: 10.1016/j.vetmic.2020.108827] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Accepted: 08/11/2020] [Indexed: 01/02/2023]
Abstract
The recombinant L. acidophilus expressing S1 and S2 domains of PEDV were generated. The oral vaccines for PED were based on a swine-origin L. acidophilus. The oral L. acidophilus vaccines induced humoral and mucosal immunity in mice. The L. acidophilus-S1 vaccine induced humoral and mucosal immunity in sows.
Porcine epidemic diarrhea (PED) is a highly contagious intestinal infectious disease caused by porcine epidemic diarrhea virus (PEDV), which is characterized by a high mortality rate in piglets. Since 2012, a remarkable growth in PED outbreaks occurred in many pig farms in China, landing a heavy blow on the pig industry. In order to develop a new effective vaccine for the current PEDV, oral vaccines were generated by transferring eukaryotic expression recombinant plasmids carrying the S1 and S2 (antigenic sites of the S protein) epitopes of PEDV into a swine-origin Lactobacillus acidophilus (L. acidophilus). After oral immunization of the BALB/c mice, higher levels of anti-PEDV specific IgG and SIgA antibodies and cellular immune responses were detected in mice orally administered with the recombinant L. acidophilus-S1 compared to the L. acidophilus-S2. Furthermore, L. acidophilus-S1 was used to inoculate the pregnant sows orally and the results showed that the recombinant L. acidophilus-S1 could elicit a specific systemic and mucosal immune response. In summary, our study demonstrated that oral immunization with L. acidophilus-S1 could improve the humoral and mucosal immune levels in sows and would be a promising candidate vaccine against PEDV infection in piglets.
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Affiliation(s)
- Yue Zang
- Shandong Provincial Center for Animal Disease Control and Prevention, Shandong, Jinan, 251000, China; College of Veterinary Medicine, Shandong Agricultural University, Shandong, Taian, 271018, China
| | - Ye Tian
- College of Veterinary Medicine, China Agricultural University, Beijing, 100094, China
| | - Yungang Li
- Shandong Provincial Center for Animal Disease Control and Prevention, Shandong, Jinan, 251000, China
| | - Ruixue Xue
- Shandong Provincial Center for Animal Disease Control and Prevention, Shandong, Jinan, 251000, China
| | - Liping Hu
- Shandong Provincial Center for Animal Disease Control and Prevention, Shandong, Jinan, 251000, China
| | - Dong Zhang
- Shandong Provincial Center for Animal Disease Control and Prevention, Shandong, Jinan, 251000, China
| | - Shengfu Sun
- Shandong Provincial Center for Animal Disease Control and Prevention, Shandong, Jinan, 251000, China
| | - Guisheng Wang
- Shandong Provincial Center for Animal Disease Control and Prevention, Shandong, Jinan, 251000, China
| | - Jing Chen
- Shandong Provincial Center for Animal Disease Control and Prevention, Shandong, Jinan, 251000, China
| | - Zouran Lan
- Shandong Provincial Center for Animal Disease Control and Prevention, Shandong, Jinan, 251000, China
| | - Shaoli Lin
- College of Veterinary Medicine, Shandong Agricultural University, Shandong, Taian, 271018, China
| | - Shijin Jiang
- College of Veterinary Medicine, Shandong Agricultural University, Shandong, Taian, 271018, China.
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12
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Minj J, Chandra P, Paul C, Sharma RK. Bio-functional properties of probiotic Lactobacillus: current applications and research perspectives. Crit Rev Food Sci Nutr 2020; 61:2207-2224. [PMID: 32519883 DOI: 10.1080/10408398.2020.1774496] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Lactic acid bacteria as a starter culture are very important component in the fermentation process of dairy and food industry. Application of lactic acid bacteria as probiotic bacteria adds more functionality to the developed product. Gut colonizing bacteria have attractive benefits related to human health. Bio-functional properties such as antimicrobial activity, anti-inflammatory, ACE-inhibitory, antioxidant, antidiarrheal, antiviral, immunomodulatory, hypocholesterolemic, anti-diabetic and anti-cancer activities are the most applicable research areas of lactic acid bacteria. Different strains of Lactobacillus are generally consumed as probiotics and colonize the gastrointestinal tract. Sometimes these bacteria may possess antimicrobial activity and may positively influence the effect of antibiotics. Use of Lactobacillus spp. for the development of functional foods is one of the promising areas of current research and applications. Individual bacterial species have unique biological activity, which may vary from strains to strains and identification of this uniqueness could be helpful in the development of functional and therapeutic food products.
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Affiliation(s)
- Jagrani Minj
- Department of Food Science and Technology, Nebraska Innovation Campus (NIC), University of Nebraska, Lincoln, Nebraska, USA
| | | | - Catherine Paul
- Department of Food Science and Technology, Nebraska Innovation Campus (NIC), University of Nebraska, Lincoln, Nebraska, USA
| | - Rakesh Kumar Sharma
- Department of Biosciences, Manipal University Jaipur, Jaipur, Rajasthan, India
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13
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Kong Y, Li M, Tian J, Zhao L, Kang Y, Zhang L, Wang G, Shan X. Effects of recombinant Lactobacillus casei on growth performance, immune response and disease resistance in crucian carp, Carassius auratus. FISH & SHELLFISH IMMUNOLOGY 2020; 99:73-85. [PMID: 32032762 DOI: 10.1016/j.fsi.2020.02.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Revised: 02/01/2020] [Accepted: 02/04/2020] [Indexed: 06/10/2023]
Abstract
In the present study, we constructed two recombinant Lactobacillus casei (L. casei) Lc-pPG-1-AcrV (surface-displayed) and Lc-pPG-2-AcrV (secretory) constitutively expressing AcrV protein of Aeromonas veronii (A. veronii). Expression of recombinant AcrV protein was verified by western blot and immunofluorescence technique. Compared with PBS group, the final weight (FW), weight gain (WG) and specific growth rate (SGR) of fish fed Lc-pPG-1-AcrV, Lc-pPG-2-AcrV and Lc-pPG diets after 56 days observed significantly increase (p < 0.05), while the feed conversion ratio (FCR) showed a significantly decrease (p < 0.05). The recombinant L. casei strains were orally administrated to crucian carp, and significant increased (p < 0.05) the immunoglobulin M (IgM), elevated the acid phosphatase (ACP), alkaline phosphatase (AKP), lysozyme (LZM) and superoxide dismutase (SOD) activity in serum. Moreover, leukocytes phagocytosis percentage and index of the recombinant L. casei were both enhanced. The results demonstrated that the recombinant L. casei could elicit systemic immune responses and increase the serum immunological index. The Interleukin-10 (IL-10), Interleukin-1β (IL-1β), interferon-γ (IFN-γ) and Tumor Necrosis Factor-α (TNF-α) levels in liver, spleen, kidney and intestine have up regulated significantly in tissues (p < 0.05), suggesting that the recombinant L. casei has the ability to induce expression of cytokines and enhance the innate immune response. Higher survival rates were exhibited that crucian carp immunized with Lc-pPG-1-AcrV (67.5%) and Lc-pPG-2-AcrV (52.5%) after challenge with A. veronii. In conclusion, these two recombinant L. casei vaccine were effective in improving crucian carp growth, immunity response and disease resistance. The recombinant L. casei strains may be a promising candidate for the development of an oral vaccine against A. veronii.
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Affiliation(s)
- Yidi Kong
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, 130118, China; Jilin Provincial Key Laboratory of Animal Nutrition and Feed Science, Jilin Agricultural University, Changchun, 130118, China; Joint Laboratory of Modern Agricultural Technology International Cooperation, Ministry of Education, Jilin Agricultural University, Changchun, Jilin, 130118, China; Ministry of Education Laboratory of Animal Production and Quality Security, Jilin Agricultural University, Changchun, Jilin, 130118, China
| | - Min Li
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, 130118, China; Jilin Provincial Key Laboratory of Animal Nutrition and Feed Science, Jilin Agricultural University, Changchun, 130118, China; Joint Laboratory of Modern Agricultural Technology International Cooperation, Ministry of Education, Jilin Agricultural University, Changchun, Jilin, 130118, China; Ministry of Education Laboratory of Animal Production and Quality Security, Jilin Agricultural University, Changchun, Jilin, 130118, China
| | - Jiaxin Tian
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, 130118, China; Jilin Provincial Key Laboratory of Animal Nutrition and Feed Science, Jilin Agricultural University, Changchun, 130118, China; Joint Laboratory of Modern Agricultural Technology International Cooperation, Ministry of Education, Jilin Agricultural University, Changchun, Jilin, 130118, China; Ministry of Education Laboratory of Animal Production and Quality Security, Jilin Agricultural University, Changchun, Jilin, 130118, China
| | - Linhui Zhao
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, 130118, China; Jilin Provincial Key Laboratory of Animal Nutrition and Feed Science, Jilin Agricultural University, Changchun, 130118, China; Joint Laboratory of Modern Agricultural Technology International Cooperation, Ministry of Education, Jilin Agricultural University, Changchun, Jilin, 130118, China; Ministry of Education Laboratory of Animal Production and Quality Security, Jilin Agricultural University, Changchun, Jilin, 130118, China
| | - Yuanhuan Kang
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, 130118, China
| | - Lei Zhang
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, 130118, China
| | - Guiqin Wang
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, 130118, China; Jilin Provincial Key Laboratory of Animal Nutrition and Feed Science, Jilin Agricultural University, Changchun, 130118, China; Joint Laboratory of Modern Agricultural Technology International Cooperation, Ministry of Education, Jilin Agricultural University, Changchun, Jilin, 130118, China; Ministry of Education Laboratory of Animal Production and Quality Security, Jilin Agricultural University, Changchun, Jilin, 130118, China.
| | - Xiaofeng Shan
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, 130118, China.
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14
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Ju AQ, Yang SB, Zhang HP, Ma X, Zhang DX, Kang YH, Shi QM, Wu TL, Wang GQ, Qian AD, Shan XF, Luan WM. Construction and immune efficacy of recombinant Lactobacillus casei strains expressing Malt from Aeromonas veronii. Microb Pathog 2020; 141:103918. [PMID: 31935441 DOI: 10.1016/j.micpath.2019.103918] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Revised: 11/29/2019] [Accepted: 12/09/2019] [Indexed: 11/16/2022]
Abstract
Aeromonas veronii is an important zoonotic pathogen that causes significant economic losses in the aquaculture industry. The use of probiotics in aquaculture is a practical alternative to antibiotics to promote animal health and aid in disease prevention. In the present study, we aimed to construct a recombinant Lactobacillus casei(surface-displayed or secretory) strain containing Malt from A. veronii TH0426 and assess its potential as an oral vaccine. A 1314-bp Malt gene fragment was successfully amplified and cloned into a prokaryotic protein expression system. Protein expression in resulting recombinant strains Lc-MCS-Malt (surface-displayed) and Lc-pPG-Malt (secretory) was then verified by Western blotting and indirect immunofluorescence. A single band was observed on the Western blots, with the molecular weight of the corresponding protein shown to be 48 kDa. Furthermore, a fluorescent signal for Lc-MCS-Malt was observed by fluorescence microscopy. At 0, 7, 16, 25, and 34 days post-immunization, tissue and blood samples were collected from common carp orally administered with the recombinant L. casei strains for immune-related index analyses. Treatment of common carp with the recombinant vaccine candidate stimulated high serum or skin mucus specific antibody titers and induced a higher lysozyme, ACP, SOD activity, while fish fed with Lc-pPG or PBS had no detectable immobilizing immune responses. Expression of IL-10, IL-1β, TNF-α, and IFN-γ genes in the group immunized with recombinant L. casei were significantly (P < 0.05) up regulated as compared with control groups, indicating that inflammatory response and cell immune response were triggered. Results also showed that recombinant L. casei could stimulate the mucosa through colonization of the intestine, resulting in increased transcription of IL-10, IL-1β, TNF-α, and IFN-γ. Immunity and colonization assays also showed that after 34 days of fasting, recombinant L. casei were still present in the intestines of the immunized fish. Common carp that received Lc-MCS-Malt(53.3%) and Lc-pPG-Malt (46.7%) exhibited higher survival rates than the controls after challenge with the pathogen A. veronii. Our findings suggested that recombinant L. casei can adequately protect fish and improve immunity, providing a theoretical basis for the future development of an oral Lactobacillus vaccine for use in aquaculture.
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Affiliation(s)
- An-Qi Ju
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, 130118, China
| | - Shu-Bao Yang
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, 130118, China
| | - Hai-Peng Zhang
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, 130118, China
| | - Xin Ma
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, 130118, China
| | - Dong-Xing Zhang
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, 130118, China
| | - Yuan-Huan Kang
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, 130118, China
| | - Qiu-Mei Shi
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, 130118, China
| | - Tong-Lei Wu
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, 130118, China
| | - Gui-Qin Wang
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, 130118, China
| | - Ai-Dong Qian
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, 130118, China
| | - Xiao-Feng Shan
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, 130118, China.
| | - Wei-Min Luan
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, 130118, China.
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15
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Jiang Y, Jia S, Zheng D, Li F, Wang S, Wang L, Qiao X, Cui W, Tang L, Xu Y, Xia X, Li Y. Protective Immunity against Canine Distemper Virus in Dogs Induced by Intranasal Immunization with a Recombinant Probiotic Expressing the Viral H Protein. Vaccines (Basel) 2019; 7:vaccines7040213. [PMID: 31835572 PMCID: PMC6963260 DOI: 10.3390/vaccines7040213] [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: 10/26/2019] [Revised: 12/05/2019] [Accepted: 12/06/2019] [Indexed: 12/26/2022] Open
Abstract
Canine distemper virus (CDV) elicits a severe contagious disease in a broad range of hosts. CDV mortality rates are 50% in domestic dogs and 100% in ferrets. Its primary infection sites are respiratory and intestinal mucosa. This study aimed to develop an effective mucosal CDV vaccine using a non-antibiotic marked probiotic pPGΔCm-T7g10-EGFP-H/L. casei 393 strain expressing the CDV H protein. Its immunogenicity in BALB/c mice was evaluated using intranasal and oral vaccinations, whereas in dogs the intranasal route was used for vaccination. Our results indicate that this probiotic vaccine can stimulate a high level of secretory immunoglobulin A (sIgA)-based mucosal and IgG-based humoral immune responses in mice. SIgA levels in the nasal lavage and lungs were significantly higher in intranasally vaccinated mice than those in orally vaccinated mice. Both antigen-specific IgG and sIgA antibodies were effectively elicited in dogs through the intranasal route and demonstrated superior immunogenicity. The immune protection efficacy of the probiotic vaccine was evaluated by challenging the immunized dogs with virulent CDV 42 days after primary immunization. Dogs of the pPGΔCm-T7g10-EGFP-H/L. casei 393 group were completely protected against CDV. The proposed probiotic vaccine could be promising for protection against CDV infection in dogs.
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Affiliation(s)
- Yanping Jiang
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China; (Y.J.); (S.J.); (D.Z.); (F.L.); (S.W.); (L.W.); (X.Q.); (W.C.); (L.T.); (Y.X.)
| | - Shuo Jia
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China; (Y.J.); (S.J.); (D.Z.); (F.L.); (S.W.); (L.W.); (X.Q.); (W.C.); (L.T.); (Y.X.)
| | - Dianzhong Zheng
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China; (Y.J.); (S.J.); (D.Z.); (F.L.); (S.W.); (L.W.); (X.Q.); (W.C.); (L.T.); (Y.X.)
| | - Fengsai Li
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China; (Y.J.); (S.J.); (D.Z.); (F.L.); (S.W.); (L.W.); (X.Q.); (W.C.); (L.T.); (Y.X.)
| | - Shengwen Wang
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China; (Y.J.); (S.J.); (D.Z.); (F.L.); (S.W.); (L.W.); (X.Q.); (W.C.); (L.T.); (Y.X.)
| | - Li Wang
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China; (Y.J.); (S.J.); (D.Z.); (F.L.); (S.W.); (L.W.); (X.Q.); (W.C.); (L.T.); (Y.X.)
| | - Xinyuan Qiao
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China; (Y.J.); (S.J.); (D.Z.); (F.L.); (S.W.); (L.W.); (X.Q.); (W.C.); (L.T.); (Y.X.)
| | - Wen Cui
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China; (Y.J.); (S.J.); (D.Z.); (F.L.); (S.W.); (L.W.); (X.Q.); (W.C.); (L.T.); (Y.X.)
| | - Lijie Tang
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China; (Y.J.); (S.J.); (D.Z.); (F.L.); (S.W.); (L.W.); (X.Q.); (W.C.); (L.T.); (Y.X.)
| | - Yigang Xu
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China; (Y.J.); (S.J.); (D.Z.); (F.L.); (S.W.); (L.W.); (X.Q.); (W.C.); (L.T.); (Y.X.)
| | - Xianzhu Xia
- Institute of Military Veterinary, Academy of Military Medical Sciences, Changchun 130000, China
- Correspondence: (X.X.); (Y.L.); Tel./Fax: +86-451-5519-0363 (Y.L.)
| | - Yijing Li
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China; (Y.J.); (S.J.); (D.Z.); (F.L.); (S.W.); (L.W.); (X.Q.); (W.C.); (L.T.); (Y.X.)
- Correspondence: (X.X.); (Y.L.); Tel./Fax: +86-451-5519-0363 (Y.L.)
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16
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Song B, Zhang J, Ma J, Feng Z, Yu L, Yu Y, Cui Y. Evaluation of the immunogenicity of an omp A and staphylococcal target of RNAIII activating fusion protein displayed on the surface of Escherichia coli. Microb Pathog 2019; 136:103676. [PMID: 31437577 DOI: 10.1016/j.micpath.2019.103676] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2018] [Revised: 08/16/2019] [Accepted: 08/19/2019] [Indexed: 11/28/2022]
Abstract
The purpose of this investigation was to construct a recombinant Escherichia coli strain displaying the Staphylococcus aureus target of RNAIII activating protein (TRAP) on its surface, and to investigate the strain for its immunogenicity. The lpp'ompA and lpp'ompA-TRAP genes were fused by the overlap polymerase chain reaction and then ligated into expression plasmid pQE30 producing pLO and pLO-TRAP. These two recombinant plasmids were transformed into E. coli XL1-Blue, resulting in XL1-Blue/pLO and XL1-Blue/pLO-TRAP, which were induced to express protein. The expressed TRAP protein was displayed on the surface of XL1-Blue as judged by whole cell ELISA, flow cytometric analysis, and laser scanning confocal microscopy using the lpp'ompA surface display system. ICR mice were intramuscularly immunized with recombinant strains XL1-Blue/pLO and XL1-Blue/pLO-TRAP as well as recombinant protein TRAP. Immunized mice were assessed for anti-TRAP antibody and lymphocytes for secreted IL-4 and IFN-γ by ELISPOT and secreted IL-17A by indirect ELISA. Immunized mice were challenged with S. aureus Newman and HLJ23-1 strains. The results showed both XL1-Blue/pLO-TRAP and TRAP protein immunized mice to produce better cellular and humoral immunity than XL1-Blue/pLO and PBS injected mice.
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Affiliation(s)
- Baifen Song
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province, China
| | - Jianxin Zhang
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province, China
| | - Jinzhu Ma
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province, China
| | - Zhenyue Feng
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province, China
| | - Liquan Yu
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province, China
| | - Yongzhong Yu
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province, China
| | - Yudong Cui
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province, China.
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17
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Zhang X, He L, Zhang C, Yu C, Yang Y, Jia Y, Cheng X, Li Y, Liao C, Li J, Yu Z, Du F. The impact of sseK2 deletion on Salmonella enterica serovar typhimurium virulence in vivo and in vitro. BMC Microbiol 2019; 19:182. [PMID: 31390974 PMCID: PMC6686396 DOI: 10.1186/s12866-019-1543-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Accepted: 07/18/2019] [Indexed: 12/20/2022] Open
Abstract
Background Salmonella enterica is regarded as a major public health threat worldwide. Salmonella secretes the novel translocated effector protein K2 (SseK2), but it is unclear whether this protein plays a significant role in Salmonella enterica Typhimurium virulence. Results A ΔsseK2 mutant of S. Typhimurium exhibited similar growth curves, adhesion and invasive ability compared with wild-type (WT) bacteria. However, deletion of sseK2 rendered Salmonella deficient in biofilm formation and the early proliferative capacity of the ΔsseK2 mutant was significantly lower than that of the WT strain. In vivo, the LD50 (median lethal dose) of the ΔsseK2 mutant strain was increased 1.62 × 103-fold compared with the WT strain. In addition, vaccinating mice with the ΔsseK2 mutant protected them against challenge with a lethal dose of the WT strain. The ability of the ΔsseK2 mutant strain to induce systemic infection was highly attenuated compared with the WT strain, and the bacterial load in the animals’ internal organs was lower when they were infected with the ΔsseK2 mutant strain than when they were infected with the WT strain. Conclusions We conclude that sseK2 is a virulence-associated gene that plays a vital role in Salmonella virulence. Electronic supplementary material The online version of this article (10.1186/s12866-019-1543-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Xiaojie Zhang
- The Key Lab of Animal Disease and Public Health, Henan University of Science and Technology, 263 Kaiyuan Avenue, Luoyang, 471023, Henan, China.,Luoyang Key Laboratory of Live Carrier Biomaterial and Animal Disease Prevention and Control, Luoyang, 471023, Henan, China
| | - Lei He
- The Key Lab of Animal Disease and Public Health, Henan University of Science and Technology, 263 Kaiyuan Avenue, Luoyang, 471023, Henan, China. .,Luoyang Key Laboratory of Live Carrier Biomaterial and Animal Disease Prevention and Control, Luoyang, 471023, Henan, China.
| | - Chunjie Zhang
- The Key Lab of Animal Disease and Public Health, Henan University of Science and Technology, 263 Kaiyuan Avenue, Luoyang, 471023, Henan, China. .,Luoyang Key Laboratory of Live Carrier Biomaterial and Animal Disease Prevention and Control, Luoyang, 471023, Henan, China.
| | - Chuan Yu
- The Key Lab of Animal Disease and Public Health, Henan University of Science and Technology, 263 Kaiyuan Avenue, Luoyang, 471023, Henan, China.,Luoyang Key Laboratory of Live Carrier Biomaterial and Animal Disease Prevention and Control, Luoyang, 471023, Henan, China
| | - Yadong Yang
- The Key Lab of Animal Disease and Public Health, Henan University of Science and Technology, 263 Kaiyuan Avenue, Luoyang, 471023, Henan, China.,Luoyang Key Laboratory of Live Carrier Biomaterial and Animal Disease Prevention and Control, Luoyang, 471023, Henan, China
| | - Yanyan Jia
- The Key Lab of Animal Disease and Public Health, Henan University of Science and Technology, 263 Kaiyuan Avenue, Luoyang, 471023, Henan, China.,Luoyang Key Laboratory of Live Carrier Biomaterial and Animal Disease Prevention and Control, Luoyang, 471023, Henan, China
| | - Xiangchao Cheng
- The Key Lab of Animal Disease and Public Health, Henan University of Science and Technology, 263 Kaiyuan Avenue, Luoyang, 471023, Henan, China.,Luoyang Key Laboratory of Live Carrier Biomaterial and Animal Disease Prevention and Control, Luoyang, 471023, Henan, China.,Luoyang Polytechnic, 6 Airport Road, Luoyang, 471023, Henan, China
| | - Yinju Li
- The Key Lab of Animal Disease and Public Health, Henan University of Science and Technology, 263 Kaiyuan Avenue, Luoyang, 471023, Henan, China.,Luoyang Key Laboratory of Live Carrier Biomaterial and Animal Disease Prevention and Control, Luoyang, 471023, Henan, China
| | - Chengshui Liao
- The Key Lab of Animal Disease and Public Health, Henan University of Science and Technology, 263 Kaiyuan Avenue, Luoyang, 471023, Henan, China.,Luoyang Key Laboratory of Live Carrier Biomaterial and Animal Disease Prevention and Control, Luoyang, 471023, Henan, China
| | - Jing Li
- The Key Lab of Animal Disease and Public Health, Henan University of Science and Technology, 263 Kaiyuan Avenue, Luoyang, 471023, Henan, China.,Luoyang Key Laboratory of Live Carrier Biomaterial and Animal Disease Prevention and Control, Luoyang, 471023, Henan, China
| | - Zuhua Yu
- The Key Lab of Animal Disease and Public Health, Henan University of Science and Technology, 263 Kaiyuan Avenue, Luoyang, 471023, Henan, China.,Luoyang Key Laboratory of Live Carrier Biomaterial and Animal Disease Prevention and Control, Luoyang, 471023, Henan, China
| | - Fuyu Du
- The Key Lab of Animal Disease and Public Health, Henan University of Science and Technology, 263 Kaiyuan Avenue, Luoyang, 471023, Henan, China.,Luoyang Key Laboratory of Live Carrier Biomaterial and Animal Disease Prevention and Control, Luoyang, 471023, Henan, China
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18
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Ma S, Qiao X, Xu Y, Wang L, Zhou H, Jiang Y, Cui W, Huang X, Wang X, Tang L, Li Y. Screening and Identification of a Chicken Dendritic Cell Binding Peptide by Using a Phage Display Library. Front Immunol 2019; 10:1853. [PMID: 31447851 PMCID: PMC6691127 DOI: 10.3389/fimmu.2019.01853] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Accepted: 07/23/2019] [Indexed: 12/24/2022] Open
Abstract
Dendritic cells (DCs), as antigen-presenting cells, can initiate adaptive immune responses efficiently. Although the DC-targeting strategy has attracted more attention, relevant studies on chicken are rare. Here, specific chicken bone marrow DC-binding peptides were selected using a phage display peptide library and confirmed through ELISA, flow cytometry, fluorescence microscopy, and laser confocal microscopy. The peptide candidate SPHLHTSSPWER, named SP, was fused to the infectious bursal disease virus (IBDV) structural protein and protective antigen VP2. In vitro, the expression of DC markers (CD80, CD83, CD86, DEC205, and MHCII) and some cytokines (IFN-γ, IL-12, TNF-α, IL-1β, IL-6, and CXCLi1) by VP2-SP-stimulated DCs was significantly higher than that by DCs treated with the VP2-control peptide at 4 h (p < 0.001). In addition, an oral vaccine targeting DCs was generated using chicken-borne Lactobacillus saerimneri M11 (L. sae M11) to deliver VP2 fused with SP. Anti-IBDV mucosal and humoral immune responses were induced efficiently via oral administration, resulting in higher protective efficacy in the VP2-SP group than the VP2 group. Therefore, chicken DC targeting of IBDV protective antigen VP2 delivered by L. sae provides effective immune protection in chicken. Our study may promote research on the DC-targeting strategy to enhance the effectiveness of chicken vaccines.
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Affiliation(s)
- Sunting Ma
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China.,Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Harbin, China.,Key Laboratory of Veterinary Biological Engineering and Technology, Ministry of Agriculture, Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Xinyuan Qiao
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China.,Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Harbin, China
| | - Yigang Xu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China.,Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Harbin, China
| | - Li Wang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Han Zhou
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Yanping Jiang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Wen Cui
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Xuewei Huang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Xiaona Wang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Lijie Tang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China.,Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Harbin, China
| | - Yijing Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China.,Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Harbin, China
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19
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Klotz C, Barrangou R. Engineering Components of the Lactobacillus S-Layer for Biotherapeutic Applications. Front Microbiol 2018; 9:2264. [PMID: 30333802 PMCID: PMC6176008 DOI: 10.3389/fmicb.2018.02264] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Accepted: 09/05/2018] [Indexed: 02/06/2023] Open
Abstract
Lactic acid bacteria (LAB) are frequently harnessed for the delivery of biomolecules to mucosal tissues. Several species of Lactobacillus are commonly employed for this task, of which a subset are known to possess surface-layers (S-layers). S-layers are two-dimensional crystalline arrays of repeating proteinaceous subunits that form the outermost coating of many prokaryotic cell envelopes. Their periodicity and abundance have made them a target for numerous biotechnological applications. In the following review, we examine the multi-faceted S-layer protein (Slp), and its use in both heterologous protein expression systems and mucosal vaccine delivery frameworks, through its diverse genetic components: the strong native promoter, capable of synthesizing as many as 500 Slp subunits per second; the signal peptide that stimulates robust secretion of recombinant proteins; and the structural domains, which can be harnessed for both cell surface display of foreign peptides or adhesion enhancement of a host bacterium. Although numerous studies have established vaccine platforms based on one or more components of the Lactobacillus S-layer, this area of research still remains largely in its infancy, thus this review is meant to not only highlight past works, but also advocate for the future usage of Slps in biotherapeutic research.
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Affiliation(s)
- Courtney Klotz
- Genomic Sciences Graduate Program, North Carolina State University, Raleigh, NC, United States
- Department of Food, Bioprocessing and Nutrition Sciences, North Carolina State University, Raleigh, NC, United States
| | - Rodolphe Barrangou
- Genomic Sciences Graduate Program, North Carolina State University, Raleigh, NC, United States
- Department of Food, Bioprocessing and Nutrition Sciences, North Carolina State University, Raleigh, NC, United States
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20
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Zhou H, Li X, Wang Z, Yin J, Tan H, Wang L, Qiao X, Jiang Y, Cui W, Liu M, Li Y, Xu Y, Tang L. Construction and characterization of thymidine auxotrophic (ΔthyA) recombinant Lactobacillus casei expressing bovine lactoferricin. BMC Vet Res 2018; 14:206. [PMID: 29945678 PMCID: PMC6020375 DOI: 10.1186/s12917-018-1516-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Accepted: 06/05/2018] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Lactobacillus casei (L. casei) is well known for its probiotic property in human and animals. Lactoferricin (Lfcin) polypeptide can effectively modulate host immune responses and have antimicrobial activity in vivo and in vitro. In order to develop a food-grade L. casei system constitutively expressing bovine Lfcin, this study constructed a thymidine auxotrophy (ΔthyA) recombinant L. casei. RESULTS Based on the thymidylate synthase gene (thyA) insert site, LFEC(Lfcin expression cassette)was inserted into L. casei genome through homologous recombination, successfully expressed and could be stably inherited. The recombinant L. casei, ΔthyA L. casei-LFEC, is sensitive to chloramphenicol and limited when cultured without thymine. Meanwhile, ΔthyA L. casei-LFEC has both good antibacterial activity against Escherichia coli and Staphylococcus aureus and antiviral activity against porcine epidemic diarrhea virus (PEDV). CONCLUSIONS We successfully constructed a recombinant L. casei strain expressing Lfcin, ΔthyA L. casei-LFEC, which could only survive in the presence of thymine, and had excellent antimicrobial and antiviral activity with good genetic stability and sensitivity. This research provides a cost-effective alternative to the antibiotics with additional biological functions and wider applicability prospect. Using ΔthyA as the selectable mark instead of antibiotic to construct genetic engineering L.casei provides a safe and effective approach of feed additives in livestock raising.
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Affiliation(s)
- Han Zhou
- College of Veterinary Medicine, Northeast Agricultural University, Chang Jiang road No. 600, Xiang Fang District, Harbin, China.,Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Harbin, China
| | - Xuechun Li
- College of Veterinary Medicine, Northeast Agricultural University, Chang Jiang road No. 600, Xiang Fang District, Harbin, China
| | - Zongying Wang
- College of Veterinary Medicine, Northeast Agricultural University, Chang Jiang road No. 600, Xiang Fang District, Harbin, China
| | - Jiyuan Yin
- College of Veterinary Medicine, Northeast Agricultural University, Chang Jiang road No. 600, Xiang Fang District, Harbin, China
| | - Hongchao Tan
- College of Veterinary Medicine, Northeast Agricultural University, Chang Jiang road No. 600, Xiang Fang District, Harbin, China
| | - Li Wang
- College of Veterinary Medicine, Northeast Agricultural University, Chang Jiang road No. 600, Xiang Fang District, Harbin, China.,Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Harbin, China
| | - Xinyuan Qiao
- College of Veterinary Medicine, Northeast Agricultural University, Chang Jiang road No. 600, Xiang Fang District, Harbin, China.,Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Harbin, China
| | - Yanping Jiang
- College of Veterinary Medicine, Northeast Agricultural University, Chang Jiang road No. 600, Xiang Fang District, Harbin, China.,Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Harbin, China
| | - Wen Cui
- College of Veterinary Medicine, Northeast Agricultural University, Chang Jiang road No. 600, Xiang Fang District, Harbin, China.,Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Harbin, China
| | - Min Liu
- College of Animal Science Technology, Northeast Agricultural University, Harbin, China
| | - Yijing Li
- College of Veterinary Medicine, Northeast Agricultural University, Chang Jiang road No. 600, Xiang Fang District, Harbin, China.,Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Harbin, China
| | - Yigang Xu
- College of Veterinary Medicine, Northeast Agricultural University, Chang Jiang road No. 600, Xiang Fang District, Harbin, China. .,Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Harbin, China.
| | - Lijie Tang
- College of Veterinary Medicine, Northeast Agricultural University, Chang Jiang road No. 600, Xiang Fang District, Harbin, China. .,Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Harbin, China.
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21
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d-Alanyl-d-Alanine Ligase as a Broad-Host-Range Counterselection Marker in Vancomycin-Resistant Lactic Acid Bacteria. J Bacteriol 2018; 200:JB.00607-17. [PMID: 29686137 PMCID: PMC5996685 DOI: 10.1128/jb.00607-17] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Accepted: 04/16/2018] [Indexed: 12/03/2022] Open
Abstract
The peptidoglycan composition in lactic acid bacteria dictates vancomycin resistance. Vancomycin binds relatively poorly to peptidoglycan ending in d-alanyl-d-lactate and binds with high affinity to peptidoglycan ending in d-alanyl-d-alanine (d-Ala-d-Ala), which results in vancomycin resistance and sensitivity, respectively. The enzyme responsible for generating these peptidoglycan precursors is dipeptide ligase (Ddl). A single amino acid in the Ddl active site, phenylalanine or tyrosine, determines depsipeptide or dipeptide activity, respectively. Here, we established that heterologous expression of dipeptide ligase in vancomycin-resistant lactobacilli increases their sensitivity to vancomycin in a dose-dependent manner and overcomes the effects of the presence of a native d-Ala-d-Ala dipeptidase. We incorporated the dipeptide ligase gene on a suicide vector and demonstrated that it functions as a counterselection marker (CSM) in lactobacilli; vancomycin selection allows only those cells to grow in which the suicide vector has been lost. Subsequently, we developed a liquid-based approach to identify recombinants in only 5 days, which is approximately half the time required by conventional approaches. Phylogenetic analysis revealed that Ddl serves as a marker to predict vancomycin resistance and consequently indicated the broad applicability of the use of Ddl as a counterselection marker in the genus Lactobacillus. Finally, our system represents the first “plug and play” counterselection system in lactic acid bacteria that does not require prior genome editing and/or synthetic medium. IMPORTANCE The genus Lactobacillus contains more than 200 species, many of which are exploited in the food and biotechnology industries and in medicine. Prediction of intrinsic vancomycin resistance has thus far been limited to selected Lactobacillus species. Here, we show that heterologous expression of the enzyme Ddl (dipeptide ligase)—an essential enzyme involved in peptidoglycan synthesis—increases sensitivity to vancomycin in a dose-dependent manner. We exploited this to develop a counterselection marker for use in vancomycin-resistant lactobacilli, thereby expanding the poorly developed genome editing toolbox that is currently available for most strains. Also, we showed that Ddl is a phylogenetic marker that can be used to predict vancomycin resistance in Lactobacillus; 81% of Lactobacillus species are intrinsically resistant to vancomycin, which makes our tool broadly applicable.
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22
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Wang XN, Wang L, Zheng DZ, Chen S, Shi W, Qiao XY, Jiang YP, Tang LJ, Xu YG, Li YJ. Oral immunization with a Lactobacillus casei-based anti-porcine epidemic diarrhoea virus (PEDV) vaccine expressing microfold cell-targeting peptide Co1 fused with the COE antigen of PEDV. J Appl Microbiol 2018; 124:368-378. [PMID: 29178509 DOI: 10.1111/jam.13652] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Revised: 11/05/2017] [Accepted: 11/10/2017] [Indexed: 02/06/2023]
Abstract
AIMS The aims of this study were to develop an effective M cell-targeting oral vaccine, involving Lactobacillus casei to deliver the porcine epidemic diarrhoea virus (PEDV) core neutralizing epitope (COE) antigen conjugated with M cell-targeting peptide Co1 as an adjuvant, against PEDV infection. METHODS AND RESULTS Genetically engineered L. casei 393 (L393) strains expressing PEDV COE antigen only (pPG-COE/L393) or fused-expressing COE and M cell-targeting peptide Co1 (pPG-COE-Co1/L393) were constructed, and the immunogenicity upon administration as an oral vaccine was evaluated. The results showed that higher anti-PEDV serum IgG and mucosal SIgA antibody responses were induced in mice orally immunized with strain pPG-COE-Co1/L393 as compared to the mice immunized with strain L393 expressing COE alone or carrying the empty plasmid. In addition, the use of the Co1 ligand elicited a splenocyte proliferative response more effectively in comparison with the COE antigen alone and supported a skewed T helper 2 type of immune response against PEDV. CONCLUSIONS pPG-COE-Co1/L393 can effectively induce mucosal, humoural and Th2-type cellular immune responses against PEDV infection via oral administration. Furthermore, M cell-targeting peptide ligand Co1 is a good mucosal adjuvant. SIGNIFICANCE AND IMPACT OF THE STUDY Lactobacillus casei delivering the COE antigen of PEDV conjugated with a M cell-targeting peptide Co1 as an immune adjuvant is a promising oral vaccine candidate for PEDV.
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Affiliation(s)
- X N Wang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - L Wang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - D Z Zheng
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - S Chen
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - W Shi
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - X Y Qiao
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Y P Jiang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - L J Tang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Y G Xu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Y J Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
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23
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Expression of the alpha toxin of Clostridium perfringens in Lactobacillus casei genome and evaluation of its immune effects in mice. Microb Pathog 2018. [PMID: 29524545 DOI: 10.1016/j.micpath.2018.03.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
We previously developed a stable and marker-free Lactobacillus casei strain (PPαT Δupp) that contained a chromosomally integrated expression cassette (PPαT) that enabled the surface expression of the Clostridium perfringens alpha toxin. To measure immune responses against the alpha toxin, specific-pathogen-free BALB/c mice were inoculated with L. casei PPαT Δupp by oral gavage. Then, specific immunoglobulin A (IgA) and immunoglobulin G (IgG) antibodies and cytokines were measured by enzyme-linked immunosorbent assay (ELISA) and flow cytometry (FCM). The results showed that alpha toxin-specific IgA and IgG antibodies and cytokines were markedly increased following immunization. Natural alpha toxin challenge and neutralization tests were performed. The results showed that immunized mice can fully resist 1.5 minimum lethal doses of toxin. These results indicated that the immunized mice can produce not only humoral immunity, but also cellular immunity. These results provide a new pathway for the development of a safe, effective, and food-grade vaccine.
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Ma S, Wang L, Huang X, Wang X, Chen S, Shi W, Qiao X, Jiang Y, Tang L, Xu Y, Li Y. Oral recombinant Lactobacillus vaccine targeting the intestinal microfold cells and dendritic cells for delivering the core neutralizing epitope of porcine epidemic diarrhea virus. Microb Cell Fact 2018; 17:20. [PMID: 29426335 PMCID: PMC5807822 DOI: 10.1186/s12934-018-0861-7] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2017] [Accepted: 01/15/2018] [Indexed: 01/02/2023] Open
Abstract
Background Porcine epidemic diarrhea caused by porcine epidemic diarrhea virus (PEDV) has led to serious economic losses to the swine industry worldwide. In this study, an oral recombinant Lactobacillus casei vaccine against PEDV infection targeting the intestinal microfold (M) cells and dendritic cells (DCs) for delivering the core neutralizing epitope (COE) of PEDV spike protein was developed with M cell-targeting peptide (Col) and dendritic cell-targeting peptide (DCpep). The immunogenicity of the orally administered recombinant strains was evaluated. Results After immunization, significantly higher levels of anti-PEDV specific IgG antibodies with PEDV neutralizing activity in the sera and mucosal sIgA antibodies in the tractus genitalis, intestinal mucus, and stools were detected in mice orally administered with the recombinant strain pPG-COE-Col-DCpep/L393, which expressed DCpep and Col targeting ligands fused with the PEDV COE antigen, compared to mice orally immunized with the recombinant strain pPG-COE/L393 without the DCpep and Col targeting ligands. Moreover, in response to restimulation with the PEDV COE antigen in vitro, a significant difference in splenocyte proliferation response and Th2-associated cytokine IL-4 level was observed in the group of mice orally immunized with pPG-COE-Col-DCpep/L393 (p < 0.05) compared to the groups of mice that received pPG-COE-Col/L393 and pPG-COE-DCpep/L393, respectively. Conclusions The intestinal M cells- and DCs-targeting oral delivery of genetically engineered Lactobacillus expressing the COE antigen of PEDV can efficiently induce anti-PEDV mucosal, humoral, and cellular immune responses via oral administration, suggesting a promising vaccine strategy against PEDV infection.![]() Electronic supplementary material The online version of this article (10.1186/s12934-018-0861-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Sunting Ma
- College of Veterinary Medicine, Northeast Agricultural University, Mu Cai Street No. 59, Xiang Fang District, Harbin, People's Republic of China
| | - Li Wang
- College of Veterinary Medicine, Northeast Agricultural University, Mu Cai Street No. 59, Xiang Fang District, Harbin, People's Republic of China
| | - Xuewei Huang
- College of Veterinary Medicine, Northeast Agricultural University, Mu Cai Street No. 59, Xiang Fang District, Harbin, People's Republic of China
| | - Xiaona Wang
- College of Veterinary Medicine, Northeast Agricultural University, Mu Cai Street No. 59, Xiang Fang District, Harbin, People's Republic of China
| | - Su Chen
- College of Veterinary Medicine, Northeast Agricultural University, Mu Cai Street No. 59, Xiang Fang District, Harbin, People's Republic of China
| | - Wen Shi
- College of Veterinary Medicine, Northeast Agricultural University, Mu Cai Street No. 59, Xiang Fang District, Harbin, People's Republic of China
| | - Xinyuan Qiao
- College of Veterinary Medicine, Northeast Agricultural University, Mu Cai Street No. 59, Xiang Fang District, Harbin, People's Republic of China.,Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Harbin, People's Republic of China
| | - Yanping Jiang
- College of Veterinary Medicine, Northeast Agricultural University, Mu Cai Street No. 59, Xiang Fang District, Harbin, People's Republic of China
| | - Lijie Tang
- College of Veterinary Medicine, Northeast Agricultural University, Mu Cai Street No. 59, Xiang Fang District, Harbin, People's Republic of China.,Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Harbin, People's Republic of China
| | - Yigang Xu
- College of Veterinary Medicine, Northeast Agricultural University, Mu Cai Street No. 59, Xiang Fang District, Harbin, People's Republic of China. .,Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Harbin, People's Republic of China.
| | - Yijing Li
- College of Veterinary Medicine, Northeast Agricultural University, Mu Cai Street No. 59, Xiang Fang District, Harbin, People's Republic of China. .,Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Harbin, People's Republic of China.
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Ma ST, Ding GJ, Huang XW, Wang ZW, Wang L, Yu ML, Shi W, Jiang YP, Tang LJ, Xu YG, Li YJ. Immunogenicity in chickens with orally administered recombinant chicken-borne Lactobacillus saerimneri expressing FimA and OmpC antigen of O78 avian pathogenic Escherichia coli. J Med Microbiol 2018; 67:441-451. [PMID: 29458539 DOI: 10.1099/jmm.0.000679] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
PURPOSE Avian colibacillosis is responsible for economic losses to poultry producers worldwide. To combat this, we aimed to develop an effective oral vaccine for chicken against O78 avian pathogenic Escherichia coli (APEC) infection through a Lactobacillus delivery system. METHODOLOGY Eight Lactobacillus strains isolated from the intestines of broiler chickens were evaluated based on their in vitro adherence ability to assess their potential as a delivery vector. Fimbrial subunit A (FimA) and outer-membrane protein C (OmpC) of APEC with and without fusion to dendritic cell-targeting peptide (DCpep) and microfold cell-targeting peptide (Co1) were displayed on the surface of Lactobacillus saerimneri M-11 and yielded vaccine groups (pPG-ompC-fimA/M-11 and pPG-ompC-fimA-Co1-DCpep/M-11, respectively). The colonization of the recombinant strains in vivo was assessed and the immunogenicity and protective efficacy of orally administered recombinant strains in chickens were evaluated. RESULTS The colonization of the recombinant strains in vivo revealed no significant differences between the recombinant and wild-type strains. Chickens orally administered with vaccine groups showed significantly higher levels of OmpC/FimA-specific IgG in serum and mucosal IgA in cecum lavage, nasal lavage and stool compared to the pPG/M-11 group. After challenge with APEC CVCC1553, better protective efficacy was observed in chickens orally immunized with pPG-ompC-fimA/M-11 and pPG-ompC-fimA-Co1-DCpep/M-11, but no significant differences were observed between the two groups. CONCLUSIONS Recombinant chicken-borne L. saerimneri M-11 showed good immunogenicity in chickens, suggesting that it may be a promising vaccine candidate against APEC infections. However, the activity of mammalian DCpep and Co1 was not significant in chickens.
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Affiliation(s)
- Sun-Ting Ma
- College of Veterinary Medicine, Northeast Agricultural University, Mu Cai Street No. 59, Xiang Fang District, Harbin, PR China
| | - Guo-Jie Ding
- College of Veterinary Medicine, Northeast Agricultural University, Mu Cai Street No. 59, Xiang Fang District, Harbin, PR China
| | - Xue-Wei Huang
- College of Veterinary Medicine, Northeast Agricultural University, Mu Cai Street No. 59, Xiang Fang District, Harbin, PR China
| | - Zi-Wei Wang
- College of Veterinary Medicine, Northeast Agricultural University, Mu Cai Street No. 59, Xiang Fang District, Harbin, PR China
| | - Li Wang
- College of Veterinary Medicine, Northeast Agricultural University, Mu Cai Street No. 59, Xiang Fang District, Harbin, PR China
| | - Mei-Ling Yu
- College of Veterinary Medicine, Northeast Agricultural University, Mu Cai Street No. 59, Xiang Fang District, Harbin, PR China
| | - Wen Shi
- College of Veterinary Medicine, Northeast Agricultural University, Mu Cai Street No. 59, Xiang Fang District, Harbin, PR China
| | - Yan-Ping Jiang
- College of Veterinary Medicine, Northeast Agricultural University, Mu Cai Street No. 59, Xiang Fang District, Harbin, PR China
| | - Li-Jie Tang
- College of Veterinary Medicine, Northeast Agricultural University, Mu Cai Street No. 59, Xiang Fang District, Harbin, PR China
| | - Yi-Gang Xu
- College of Veterinary Medicine, Northeast Agricultural University, Mu Cai Street No. 59, Xiang Fang District, Harbin, PR China
| | - Yi-Jing Li
- College of Veterinary Medicine, Northeast Agricultural University, Mu Cai Street No. 59, Xiang Fang District, Harbin, PR China
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Zhang DX, Kang YH, Chen L, Siddiqui SA, Wang CF, Qian AD, Shan XF. Oral immunization with recombinant Lactobacillus casei expressing OmpAI confers protection against Aeromonas veronii challenge in common carp, Cyprinus carpio. FISH & SHELLFISH IMMUNOLOGY 2018; 72:552-563. [PMID: 29155272 DOI: 10.1016/j.fsi.2017.10.043] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Revised: 10/10/2017] [Accepted: 10/24/2017] [Indexed: 06/07/2023]
Abstract
Aeromonas veronii is a gram-negative pathogen capable of infecting both fish and mammals, including humans, and natural infection in fish results in irreparable damage to the aquaculture industry. Lactic acid bacteria (LAB) have a number of properties that make them attractive candidates as delivery vehicles for presentation to the mucosa sites of compounds with pharmaceutical interest, in particular vaccines. In this study, we generated two recombinant Lactobacillus casei (surface-displayed or secretory) expressing the OmpAI of A.veronii and evaluated the effect on immune responses in fish model. A 1022 bp gene fragment of the 42 kDa OmpAI antigen of A.veronii was cloned into pPG-1 (surface-displayed) and pPG-2 (secretory) and electrotransformed into Lactobacillus casei CC16. The recombinant plasmid in L.casei could be stably inherited over 50 generations, and production of OmpAI protein had slight limited effects on cells growth. Treatment of common carp with the recombinant vaccine candidate stimulated high serum or skin mucus specific antibody titers and induced a higher lysozyme, ACP, SOD activity, while fish fed with Lc-pPG or PBS had no detectable immobilizing immune responses. Expression of IL-10, IL-β, IFN-γ, TNF-α genes in the group immunized with recombinant L.casei were significantly (P < 0.05) up regulated as compared with control groups, indicating that inflammatory response and cell immune response were triggered. Further, viable recombinant L.casei strains were directly delivered and survive throughout the intestinal tract, the recombinant OmpAI was also detected in intestine mucosal. The results showed that common carp received Lc-pPG1-OmpAI (66.7%) and Lc-pPG2-OmpAI (50.0%) had higher survival rates compared with the controls after challenge with A.veronii, indicating that Lc-pPG1-OmpAI and Lc-pPG2-OmpAI had beneficial effects on immune response and enhanced disease resistance of common carp against A.veronii infection. Our study here demonstrates, for the first time, the ability of recombinant L.casei as oral vaccine against A.veronii infection in carps. The combination of OmpAI delivery and LAB approach may be a promising mucosal therapeutic agent for treating and controlling A.veronii.
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Affiliation(s)
- Dong-Xing Zhang
- College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China
| | - Yuan-Huan Kang
- College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China
| | - Long Chen
- College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China
| | - Shahrood Ahmed Siddiqui
- College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China
| | - Chun-Feng Wang
- College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China
| | - Ai-Dong Qian
- College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China.
| | - Xiao-Feng Shan
- College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China.
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Orally administered recombinant Lactobacillus casei vector vaccine expressing β-toxoid of Clostridium perfringens that induced protective immunity responses. Res Vet Sci 2017; 115:332-339. [DOI: 10.1016/j.rvsc.2017.06.018] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2017] [Revised: 06/05/2017] [Accepted: 06/26/2017] [Indexed: 11/30/2022]
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Oral Delivery of Probiotics Expressing Dendritic Cell-Targeting Peptide Fused with Porcine Epidemic Diarrhea Virus COE Antigen: A Promising Vaccine Strategy against PEDV. Viruses 2017; 9:v9110312. [PMID: 29068402 PMCID: PMC5707519 DOI: 10.3390/v9110312] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Revised: 10/19/2017] [Accepted: 10/23/2017] [Indexed: 12/16/2022] Open
Abstract
Porcine epidemic diarrhea virus (PEDV), an enteric coronavirus, is the causative agent of porcine epidemic diarrhea (PED) that damages intestinal epithelial cells and results in severe diarrhea and dehydration in neonatal suckling pigs with up to 100% mortality. The oral vaccine route is reported as a promising approach for inducing protective immunity against PEDV invasion. Furthermore, dendritic cells (DCs), professional antigen-presenting cells, link humoral and cellular immune responses for homeostasis of the intestinal immune environment. In this study, in order to explore an efficient oral vaccine against PEDV infection, a mucosal DC-targeting oral vaccine was developed using Lactobacillus casei to deliver the DC-targeting peptide (DCpep) fused with the PEDV core neutralizing epitope (COE) antigen. This probiotic vaccine could efficiently elicit secretory immunoglobulin A (SIgA)-based mucosal and immunoglobulin G (IgG)-based humoral immune responses via oral vaccination in vivo. Significant differences (p < 0.05) in the immune response levels were observed between probiotics expressing the COE-DCpep fusion protein and COE antigen alone, suggesting better immune efficiency of the probiotics vaccine expressing the DC-targeting peptide fused with PEDV COE antigen. This mucosal DC-targeting oral vaccine delivery effectively enhances vaccine antigen delivery efficiency, providing a useful strategy to induce efficient immune responses against PEDV infection.
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Immunogenicity of eGFP-Marked Recombinant Lactobacillus casei against Transmissible Gastroenteritis Virus and Porcine Epidemic Diarrhea Virus. Viruses 2017; 9:v9100274. [PMID: 28946696 PMCID: PMC5691626 DOI: 10.3390/v9100274] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Revised: 09/19/2017] [Accepted: 09/23/2017] [Indexed: 12/13/2022] Open
Abstract
Porcine transmissible gastroenteritis virus (TGEV) and porcine epidemic diarrhea virus (PEDV) are the causative agents of highly fatal acute diarrhea in pigs, resulting in enormous losses in the pig industry worldwide. To develop an effective bivalent oral vaccine against TGEV and PEDV infection, the D antigenic site of the TGEV spike (S) protein and the major antigen site (core neutralizing epitope—COE) of the PEDV S protein were used as immunogens, and the enhanced green fluorescent protein (eGFP) gene was used as a reporter to construct genetically engineered Lactobacillus casei rLpPGF-T7g10-eGFP-6D-COE. The expression of proteins of interest by the recombinant L. casei was confirmed by confocal laser scanning microscopy and a Western blot assay, and the immunogenicity of rLpPGF-T7g10-eGFP-6D-COE in orally immunized mice was evaluated. The results showed that levels of anti-PEDV and anti-TGEV serum immunoglobulin G (IgG) and mucosal secreted immunoglobulin A (sIgA) antibodies obtained from the mice immunized with rLpPGF-T7g10-eGFP-6D-COE, as well as the proliferation levels of lymphocytes, were significantly higher than those in mice orally administered phosphate-buffered saline (PBS) or rLpPG-T7g10. Moreover, the serum IgG antibodies showed neutralizing effects against PEDV and TGEV. Our data suggest that the antibiotic resistance-free genetically engineered L. casei bivalent oral vaccine provides a safe and promising strategy for vaccine development against PEDV and TGEV.
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30
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Alimolaei M, Golchin M. A comparison of methods for extracting plasmids from a difficult to lyse bacterium: Lactobacillus casei. Biologicals 2017; 45:47-51. [DOI: 10.1016/j.biologicals.2016.10.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Revised: 09/27/2016] [Accepted: 10/04/2016] [Indexed: 10/20/2022] Open
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Directed chromosomal integration and expression of porcine rotavirus outer capsid protein VP4 in Lactobacillus casei ATCC393. Appl Microbiol Biotechnol 2016; 100:9593-9604. [DOI: 10.1007/s00253-016-7779-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Revised: 07/25/2016] [Accepted: 08/02/2016] [Indexed: 10/21/2022]
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Oral immunization of mice against Clostridium perfringens epsilon toxin with a Lactobacillus casei vector vaccine expressing epsilon toxoid. INFECTION GENETICS AND EVOLUTION 2016; 40:282-287. [DOI: 10.1016/j.meegid.2016.03.020] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Revised: 03/15/2016] [Accepted: 03/18/2016] [Indexed: 11/24/2022]
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Michon C, Langella P, Eijsink VGH, Mathiesen G, Chatel JM. Display of recombinant proteins at the surface of lactic acid bacteria: strategies and applications. Microb Cell Fact 2016; 15:70. [PMID: 27142045 PMCID: PMC4855500 DOI: 10.1186/s12934-016-0468-9] [Citation(s) in RCA: 83] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Accepted: 04/21/2016] [Indexed: 01/07/2023] Open
Abstract
Lactic acid bacteria (LAB) are promising vectors of choice to deliver active molecules to mucosal tissues. They are recognized as safe by the World Health Organization and some strains have probiotic properties. The wide range of potential applications of LAB-driven mucosal delivery includes control of inflammatory bowel disease, vaccine delivery, and management of auto-immune diseases. Because of this potential, strategies for the display of proteins at the surface of LAB are gaining interest. To display a protein at the surface of LAB, a signal peptide and an anchor domain are necessary. The recombinant protein can be attached to the membrane layer, using a transmembrane anchor or a lipoprotein-anchor, or to the cell wall, by a covalent link using sortase mediated anchoring via the LPXTG motif, or by non-covalent liaisons employing binding domains such as LysM or WxL. Both the stability and functionality of the displayed proteins will be affected by the kind of anchor used. The most commonly surfaced exposed recombinant proteins produced in LAB are antigens and antibodies and the most commonly used LAB are lactococci and lactobacilli. Although it is not necessarily so that surface-display is the preferred localization in all cases, it has been shown that for certain applications, such as delivery of the human papillomavirus E7 antigen, surface-display elicits better biological responses, compared to cytosolic expression or secretion. Recent developments include the display of peptides and proteins targeting host cell receptors, for the purpose of enhancing the interactions between LAB and host. Surface-display technologies have other potential applications, such as degradation of biomass, which is of importance for some potential industrial applications of LAB.
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Affiliation(s)
- C. Michon
- />Micalis Institute, INRA, AgroParisTech, Université Paris-Saclay, 78350 Jouy-en-Josas, France
| | - P. Langella
- />Micalis Institute, INRA, AgroParisTech, Université Paris-Saclay, 78350 Jouy-en-Josas, France
| | - V. G. H. Eijsink
- />Department of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences (NMBU), Ås, Norway
| | - G. Mathiesen
- />Department of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences (NMBU), Ås, Norway
| | - J. M. Chatel
- />Micalis Institute, INRA, AgroParisTech, Université Paris-Saclay, 78350 Jouy-en-Josas, France
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The apt/6-Methylpurine Counterselection System and Its Applications in Genetic Studies of the Hyperthermophilic Archaeon Sulfolobus islandicus. Appl Environ Microbiol 2016; 82:3070-3081. [PMID: 26969706 DOI: 10.1128/aem.00455-16] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2016] [Accepted: 03/09/2016] [Indexed: 12/31/2022] Open
Abstract
UNLABELLED Sulfolobus islandicus serves as a model for studying archaeal biology as well as linking novel biology to evolutionary ecology using functional population genomics. In the present study, we developed a new counterselectable genetic marker in S. islandicus to expand the genetic toolbox for this species. We show that resistance to the purine analog 6-methylpurine (6-MP) in S. islandicus M.16.4 is due to the inactivation of a putative adenine phosphoribosyltransferase encoded by M164_0158 (apt). The application of the apt gene as a novel counterselectable marker was first illustrated by constructing an unmarked α-amylase deletion mutant. Furthermore, the 6-MP counterselection feature was employed in a forward (loss-of-function) mutation assay to reveal the profile of spontaneous mutations in S. islandicus M.16.4 at the apt locus. Moreover, the general conservation of apt genes in the crenarchaea suggests that the same strategy can be broadly applied to other crenarchaeal model organisms. These results demonstrate that the apt locus represents a new tool for genetic manipulation and sequence analysis of the hyperthermophilic crenarchaeon S. islandicus IMPORTANCE Currently, the pyrEF/5-fluoroorotic acid (5-FOA) counterselection system remains the sole counterselection marker in crenarchaeal genetics. Since most Sulfolobus mutants constructed by the research community were derived from genetic hosts lacking the pyrEF genes, the pyrEF/5-FOA system is no longer available for use in forward mutation assays. Demonstration of the apt/6-MP counterselection system for the Sulfolobus model renders it possible to again study the mutation profiles in mutants that have already been constructed by the use of strains with a pyrEF-deficient background. Furthermore, additional counterselectable markers will allow us to conduct more sophisticated genetic studies, i.e., investigate mechanisms of chromosomal DNA transfer and quantify recombination frequencies among S. islandicus strains.
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Ma BC, Yang X, Wang HN, Cao HP, Xu PW, Ding MD, Liu H. Characterization of a new Lactobacillus salivarius strain engineered to express IBV multi-epitope antigens by chromosomal integration. Biosci Biotechnol Biochem 2015; 80:574-83. [PMID: 26618736 DOI: 10.1080/09168451.2015.1101330] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
To obtain adhesive and safe lactic acid bacteria (LAB) strains for expressing heterologous antigens, we screened LAB inhabitants in intestine of Tibetan chickens by analyzing their adhesion and safety properties and the selected LAB was engineered to express heterologous antigen (UTEpi C-A) based on chromosomal integration strategy. We demonstrated that a new Lactobacillu salivarius TCMM17 strain is strongly adhesive to chicken intestinal epithelial cells, contains no endogenous plasmids, is susceptible to tested antimicrobials, and shows no toxicities. In order to examine the potential of TCMM17 strain as heterogenous antigen delivering vehicle, we introduced a UTEpi C-A expression cassette in its chromosome by constructing a non-replicative plasmid (pORI280-UUTEpi C-AD). The recombinant TCMM17 strain (∆TCMM17) stably was found to keep the gene cassette through 50 generations, and successfully displayed EpiC encoded by the cassette on its surface. This work provides a universal platform for development of novel oral vaccines and expression of further antigens of avian pathogens.
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Affiliation(s)
- Bing-cun Ma
- a Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, ''985 Project'' Science Innovative Platform for Resource and Environment Protection of Southwestern, Key Laboratory of Bio-resources and Eco-environment , School of Life Science, Sichuan University, Ministry of Education , Chengdu , China
| | - Xin Yang
- a Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, ''985 Project'' Science Innovative Platform for Resource and Environment Protection of Southwestern, Key Laboratory of Bio-resources and Eco-environment , School of Life Science, Sichuan University, Ministry of Education , Chengdu , China
| | - Hong-ning Wang
- a Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, ''985 Project'' Science Innovative Platform for Resource and Environment Protection of Southwestern, Key Laboratory of Bio-resources and Eco-environment , School of Life Science, Sichuan University, Ministry of Education , Chengdu , China
| | - Hai-peng Cao
- a Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, ''985 Project'' Science Innovative Platform for Resource and Environment Protection of Southwestern, Key Laboratory of Bio-resources and Eco-environment , School of Life Science, Sichuan University, Ministry of Education , Chengdu , China
| | - Peng-wei Xu
- a Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, ''985 Project'' Science Innovative Platform for Resource and Environment Protection of Southwestern, Key Laboratory of Bio-resources and Eco-environment , School of Life Science, Sichuan University, Ministry of Education , Chengdu , China
| | - Meng-die Ding
- a Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, ''985 Project'' Science Innovative Platform for Resource and Environment Protection of Southwestern, Key Laboratory of Bio-resources and Eco-environment , School of Life Science, Sichuan University, Ministry of Education , Chengdu , China
| | - Hui Liu
- a Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, ''985 Project'' Science Innovative Platform for Resource and Environment Protection of Southwestern, Key Laboratory of Bio-resources and Eco-environment , School of Life Science, Sichuan University, Ministry of Education , Chengdu , China
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