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Hou W, Wu H, Wang S, Wang W, Wang B, Wang H. Designing a multi-epitope vaccine to control porcine epidemic diarrhea virus infection using immunoinformatics approaches. Front Microbiol 2023; 14:1264612. [PMID: 37779715 PMCID: PMC10538973 DOI: 10.3389/fmicb.2023.1264612] [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] [Received: 07/21/2023] [Accepted: 08/31/2023] [Indexed: 10/03/2023] Open
Abstract
Porcine epidemic diarrhea virus (PEDV), a continuously evolving pathogen, causes severe diarrhea in piglets with high mortality rates. However, current vaccines cannot provide complete protection against PEDV, so vaccine development is still necessary and urgent. Here, with the help of immunoinformatics approaches, we attempted to design a multi-epitope vaccine named rPMEV to prevent and control PEDV infection. The epitopes of rPMEV were constructed by 9 cytotoxic T lymphocyte epitopes (CTLs), 11 helper T lymphocyte epitopes (HTLs), 6 linear B cell epitopes (LBEs), and 4 conformational B cell epitopes (CBEs) based on the S proteins from the four representative PEDV G2 strains. To enhance immunogenicity, porcine β-defensin-2 (PBD-2) was adjoined to the N-terminal of the vaccine as an adjuvant. All of the epitopes and PBD-2 were joined by corresponding linkers and recombined into the multivalent vaccine, which is stable, antigenic, and non-allergenic. Furthermore, we adopted molecular docking and molecular dynamics simulation methods to analyze the interaction of rPMEV with the Toll-like receptor 4 (TLR4): a stable interaction between them created by 13 hydrogen bonds. In addition, the results of the immune simulation showed that rPMEV could stimulate both cellular and humoral immune responses. Finally, to raise the expression efficiency, the sequence of the vaccine protein was cloned into the pET28a (+) vector after the codon optimization. These studies indicate that the designed multi-epitope vaccine has a potential protective effect, providing a theoretical basis for further confirmation of its protective effect against PEDV infection in vitro and in vivo studies.
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Affiliation(s)
- Wei Hou
- College of Veterinary Medicine, Shanxi Agricultural University, Jinzhong, China
| | - Heqiong Wu
- College of Veterinary Medicine, Shanxi Agricultural University, Jinzhong, China
| | - Sibei Wang
- College of Veterinary Medicine, Shanxi Agricultural University, Jinzhong, China
| | - Wenting Wang
- College of Veterinary Medicine, Shanxi Agricultural University, Jinzhong, China
| | - Bin Wang
- College of Veterinary Medicine, Shanxi Agricultural University, Jinzhong, China
- Single Molecule Nanometry Laboratory (Sinmolab), Nanjing Agricultural University, Nanjing, China
| | - Haidong Wang
- College of Veterinary Medicine, Shanxi Agricultural University, Jinzhong, China
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Jeon HJ, You SH, Nam EH, Truong VL, Bang JH, Bae YJ, Rarison RHG, Kim SK, Jeong WS, Jung YH, Shin M. Red ginseng dietary fiber promotes probiotic properties of Lactiplantibacillus plantarum and alters bacterial metabolism. Front Microbiol 2023; 14:1139386. [PMID: 36950168 PMCID: PMC10025373 DOI: 10.3389/fmicb.2023.1139386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Accepted: 02/20/2023] [Indexed: 03/08/2023] Open
Abstract
Korean red ginseng has been widely used as an herbal medicine. Red ginseng dietary fiber (RGDF) is a residue of the processed ginseng product but still contains bioactive constituents that can be applied as prebiotics. In this study, we evaluated changes on fermentation profiles and probiotic properties of strains that belong to family Lactobacillaceae with RGDF supplementation. Metabolomic analyses were performed to understand specific mechanisms on the metabolic alteration by RGDF and to discover novel bioactive compounds secreted by the RGDF-supplemented probiotic strain. RGDF supplementation promoted short-chain fatty acid (SCFA) production, carbon source utilization, and gut epithelial adhesion of Lactiplantibacillus plantarum and inhibited attachment of enteropathogens. Intracellular and extracellular metabolome analyses revealed that RGDF induced metabolic alteration, especially associated with central carbon metabolism, and produced RGDF-specific metabolites secreted by L. plantarum, respectively. Specifically, L. plantarum showed decreases in intracellular metabolites of oleic acid, nicotinic acid, uracil, and glyceric acid, while extracellular secretion of several metabolites including oleic acid, 2-hydroxybutanoic acid, hexanol, and butyl acetate increased. RGDF supplementation had distinct effects on L. plantarum metabolism compared with fructooligosaccharide supplementation. These findings present potential applications of RGDF as prebiotics and bioactive compounds produced by RGDF-supplemented L. plantarum as novel postbiotic metabolites for human disease prevention and treatment.
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Affiliation(s)
- Hyeon Ji Jeon
- Food and Bio-Industry Research Institute, School of Food Science and Biotechnology, College of Agriculture and Life Sciences, Kyungpook National University, Daegu, Republic of Korea
| | - Seung-Hwan You
- Laboratory of Efficacy Research, Korea Ginseng Corporation, Daejeon, Republic of Korea
| | - Eoun Ho Nam
- Department of Microbiology, College of Medicine, Inha University, Incheon, Republic of Korea
- Department of Biomedical Sciences, Program in Biomedical Science and Engineering, Inha University, Incheon, Republic of Korea
| | - Van-Long Truong
- Food and Bio-Industry Research Institute, School of Food Science and Biotechnology, College of Agriculture and Life Sciences, Kyungpook National University, Daegu, Republic of Korea
| | - Ji-Hong Bang
- Food and Bio-Industry Research Institute, School of Food Science and Biotechnology, College of Agriculture and Life Sciences, Kyungpook National University, Daegu, Republic of Korea
| | - Yeon-Ji Bae
- Food and Bio-Industry Research Institute, School of Food Science and Biotechnology, College of Agriculture and Life Sciences, Kyungpook National University, Daegu, Republic of Korea
| | - Razanamanana H. G. Rarison
- Food and Bio-Industry Research Institute, School of Food Science and Biotechnology, College of Agriculture and Life Sciences, Kyungpook National University, Daegu, Republic of Korea
| | - Sang-Kyu Kim
- Laboratory of Efficacy Research, Korea Ginseng Corporation, Daejeon, Republic of Korea
| | - Woo-Sik Jeong
- Food and Bio-Industry Research Institute, School of Food Science and Biotechnology, College of Agriculture and Life Sciences, Kyungpook National University, Daegu, Republic of Korea
| | - Young Hoon Jung
- Food and Bio-Industry Research Institute, School of Food Science and Biotechnology, College of Agriculture and Life Sciences, Kyungpook National University, Daegu, Republic of Korea
- *Correspondence: Young Hoon Jung,
| | - Minhye Shin
- Department of Microbiology, College of Medicine, Inha University, Incheon, Republic of Korea
- Department of Biomedical Sciences, Program in Biomedical Science and Engineering, Inha University, Incheon, Republic of Korea
- Minhye Shin,
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