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Liang Q, Liu Z, Liang Z, Zhu C, Li D, Kong Q, Mou H. Development strategies and application of antimicrobial peptides as future alternatives to in-feed antibiotics. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 927:172150. [PMID: 38580107 DOI: 10.1016/j.scitotenv.2024.172150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Revised: 03/14/2024] [Accepted: 03/30/2024] [Indexed: 04/07/2024]
Abstract
The use of in-feed antibiotics has been widely restricted due to the significant environmental pollution and food safety concerns they have caused. Antimicrobial peptides (AMPs) have attracted widespread attention as potential future alternatives to in-feed antibiotics owing to their demonstrated antimicrobial activity and environment friendly characteristics. However, the challenges of weak bioactivity, immature stability, and low production yields of natural AMPs impede practical application in the feed industry. To address these problems, efforts have been made to develop strategies for approaching the AMPs with enhanced properties. Herein, we summarize approaches to improving the properties of AMPs as potential alternatives to in-feed antibiotics, mainly including optimization of structural parameters, sequence modification, selection of microbial hosts, fusion expression, and industrially fermentation control. Additionally, the potential for application of AMPs in animal husbandry is discussed. This comprehensive review lays a strong theoretical foundation for the development of in-feed AMPs to achieve the public health globally.
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Affiliation(s)
- Qingping Liang
- College of Food Science and Engineering, Ocean University of China, Qingdao 266404, China
| | - Zhemin Liu
- Fundamental Science R&D Center of Vazyme Biotech Co. Ltd., Nanjing 210000, China
| | - Ziyu Liang
- Section of Neurobiology, Department of Biological Sciences, University of Southern California, Los Angeles, CA 90089, USA
| | - Changliang Zhu
- College of Food Science and Engineering, Ocean University of China, Qingdao 266404, China
| | - Dongyu Li
- College of Food Science and Engineering, Ocean University of China, Qingdao 266404, China
| | - Qing Kong
- College of Food Science and Engineering, Ocean University of China, Qingdao 266404, China
| | - Haijin Mou
- College of Food Science and Engineering, Ocean University of China, Qingdao 266404, China.
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Valdes J, Gagné-Sansfaçon J, Reyes V, Armas A, Marrero G, Moyo-Muamba M, Ramanathan S, Perreault N, Ilangumaran S, Rivard N, Fortier LC, Menendez A. Defects in the expression of colonic host defense factors associate with barrier dysfunction induced by a high-fat/high-cholesterol diet. Anat Rec (Hoboken) 2022; 306:1165-1183. [PMID: 36196983 DOI: 10.1002/ar.25083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 08/25/2022] [Accepted: 09/11/2022] [Indexed: 11/07/2022]
Abstract
The effect of Western diets in the gastrointestinal system is largely mediated by their ability to promote alterations in the immunity and physiology of the intestinal epithelium, and to affect the composition of the commensal microbiota. To investigate the response of the colonic epithelium to high-fat/high-cholesterol diets (HFHCDs), we evaluated the synthesis of host defense factors involved in the maintenance of the colonic homeostasis. C57BL/6 mice were fed an HFHCD for 3 weeks and their colons were evaluated for histopathology, gene expression, and microbiota composition. In addition, intestinal permeability and susceptibility to Citrobacter rodentium were also studied. HFHCD caused colonic hyperplasia, loss of goblet cells, thinning of the mucus layer, moderate changes in the composition of the intestinal microbiota, and an increase in intestinal permeability. Gene expression analyses revealed significant drops in the transcript levels of Muc1, Muc2, Agr2, Atoh1, Spdef, Ang4, Camp, Tff3, Dmbt1, Fcgbp, Saa3, and Retnlb. The goblet cell granules of HFHCD-fed mice were devoid of Relmβ and Tff3, indicating defective production of those two factors critical for intestinal epithelial defense and homeostasis. In correspondence with these defects, colonic bacteria were in close contact with, and invading the epithelium. Fecal shedding of C. rodentium showed an increased bacterial burden in HFHCD-fed animals accompanied by increased epithelial damage. Collectively, our results show that HFHCD perturbs the synthesis of colonic host defense factors, which associate with alterations in the commensal microbiota, the integrity of the intestinal barrier, and the host's susceptibility to enteric infections.
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Affiliation(s)
- Jennifer Valdes
- Department of Microbiology and Infectious Diseases, Université de Sherbrooke, Sherbrooke, Quebec, Canada
| | - Jessica Gagné-Sansfaçon
- Department of Immunology and Cell Biology, Université de Sherbrooke, Sherbrooke, Quebec, Canada
| | - Vilcy Reyes
- Department of Immunology and Cell Biology, Université de Sherbrooke, Sherbrooke, Quebec, Canada
| | - Anny Armas
- Department of Microbiology and Infectious Diseases, Université de Sherbrooke, Sherbrooke, Quebec, Canada
| | - Gisela Marrero
- Department of Microbiology and Infectious Diseases, Université de Sherbrooke, Sherbrooke, Quebec, Canada
| | - Mitterrand Moyo-Muamba
- Department of Microbiology and Infectious Diseases, Université de Sherbrooke, Sherbrooke, Quebec, Canada
| | - Sheela Ramanathan
- Department of Immunology and Cell Biology, Université de Sherbrooke, Sherbrooke, Quebec, Canada
| | - Nathalie Perreault
- Department of Immunology and Cell Biology, Université de Sherbrooke, Sherbrooke, Quebec, Canada
| | - Subburaj Ilangumaran
- Department of Immunology and Cell Biology, Université de Sherbrooke, Sherbrooke, Quebec, Canada
| | - Nathalie Rivard
- Department of Immunology and Cell Biology, Université de Sherbrooke, Sherbrooke, Quebec, Canada
| | - Louis-Charles Fortier
- Department of Microbiology and Infectious Diseases, Université de Sherbrooke, Sherbrooke, Quebec, Canada
| | - Alfredo Menendez
- Department of Microbiology and Infectious Diseases, Université de Sherbrooke, Sherbrooke, Quebec, Canada
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Yan J, Yu W, Lu C, Wang G, Liu C, Jiang L, Jiang Z, Liang Z. Orai2 deficiency attenutates experimental colitis by facilitating the colonization of Akkermansia muciniphila. Genomics 2022; 114:110479. [PMID: 36070824 DOI: 10.1016/j.ygeno.2022.110479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2022] [Revised: 08/14/2022] [Accepted: 09/02/2022] [Indexed: 11/17/2022]
Abstract
Orai2 is a component of store-operated Calcium channels (SOCCs) and exerts a pivotal role in immunity. In intestinal macrophages (Mφs), Orai2 deficiency influenced linoleic acid (LA)-arachidonic acid (ARA) derivatives by regulating Pla2g6 and Alox5. 16S rRNA sequencing showed that deleting Orai2 facilitated the prevalence of Akkermansia muciniphila, and untargeted metabolomics confirmed the suppressed level of leukotriene A. Moreover, Orai2 deficiency ameliorated the progression of experimental murine colitis, as shown by attenuated structural collapse of colon and pro-inflammatory cytokine concentrations, and rescued dysbiosis. The administration of a Pla2g6 inhibitor (Bromoenol lactone) not only inhibited the relative abundance of A. muciniphila in the feces of Orai2 knockout (Orai2-/-) mice, but also abolished the increased activity of Calcium-released activated Calcium channel (CRAC) in Orai2-/- intestinal Mφs, corroborating the involvement of Pla2g6 in Orai2 signaling. In conclusion, Orai2 deficiency increases Pla2g6 and hence facilitating A. muciniphila colonization, which might be a potential strategy to combat colitis.
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Affiliation(s)
- Jing Yan
- Department of Physiology, Jining Medical University, Jining City, Shandong Province 272067, China.
| | - Wei Yu
- Department of Physiology, Jining Medical University, Jining City, Shandong Province 272067, China
| | - Chang Lu
- Department of Physiology, Jining Medical University, Jining City, Shandong Province 272067, China
| | - Guoliang Wang
- Department of Physiology, Jining Medical University, Jining City, Shandong Province 272067, China
| | - Chen Liu
- Department of Physiology, Jining Medical University, Jining City, Shandong Province 272067, China
| | - Lu Jiang
- Department of Physiology, Jining Medical University, Jining City, Shandong Province 272067, China
| | - Zizheng Jiang
- Department of Physiology, Jining Medical University, Jining City, Shandong Province 272067, China
| | - Zhenghao Liang
- Department of Physiology, Jining Medical University, Jining City, Shandong Province 272067, China
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