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Li W, Lin X, Liang H, Wu Z, Wang M, Sun J, Li X, He W, Gao X, Hu T, Xiao L, Zou Y. Genomic and functional diversity of the human-derived isolates of Faecalibacterium. Front Microbiol 2024; 15:1379500. [PMID: 38873165 PMCID: PMC11169845 DOI: 10.3389/fmicb.2024.1379500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Accepted: 05/06/2024] [Indexed: 06/15/2024] Open
Abstract
Introduction Faecalibacterium is one of the most abundant bacteria in the gut microbiota of healthy adults, highly regarded as a next-generation probiotic. However, the functions of Faecalibacterium genomes from cultured strains and the distribution of different species in populations may differ among different sources. Methods We here performed an extensive analysis of pan-genomes, functions, and safety evaluation of 136 Faecalibacterium genomes collected from 10 countries. Results The genomes are clustered into 11 clusters, with only five of them were characterized and validly nomenclated. Over 80% of the accessory genes and unique genes of Faecalibacterium are found with unknown function, which reflects the importance of expanding the collection of Faecalibacterium strains. All the genomes have the potential to produce acetic acid and butyric acid. Nine clusters of Faecalibacterium are found significantly enriched in the healthy individuals compared with patients with type II diabetes.. Discussion This study provides a comprehensive view of genomic characteristic and functions and of culturable Faecalibacterium bacterium from human gut, and enables clinical advances in the future.
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Affiliation(s)
- Wenxi Li
- BGI-Shenzhen, Shenzhen, China
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou, China
| | - Xiaoqian Lin
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou, China
| | - Hewei Liang
- BGI-Shenzhen, Shenzhen, China
- BGI Research, Wuhan, China
| | - Zhinan Wu
- BGI-Shenzhen, Shenzhen, China
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Mengmeng Wang
- BGI-Shenzhen, Shenzhen, China
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Jingxi Sun
- BGI-Shenzhen, Shenzhen, China
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Xiaofang Li
- BGI-Shenzhen, Shenzhen, China
- BGI College and Henan Institute of Medical and Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China
| | | | | | - Tongyuan Hu
- BGI-Shenzhen, Shenzhen, China
- BGI Research, Wuhan, China
| | - Liang Xiao
- BGI-Shenzhen, Shenzhen, China
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
- Shenzhen Engineering Laboratory of Detection and Intervention of Human Intestinal Microbiome, BGI-Shenzhen, Shenzhen, China
| | - Yuanqiang Zou
- BGI-Shenzhen, Shenzhen, China
- BGI College and Henan Institute of Medical and Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China
- Shenzhen Engineering Laboratory of Detection and Intervention of Human Intestinal Microbiome, BGI-Shenzhen, Shenzhen, China
- Laboratory of Genomics and Molecular Biomedicine, Department of Biology, University of Copenhagen, Universitetsparken, Copenhagen, Denmark
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Cashman-Kadri S, Lagüe P, Subirade M, Fliss I, Beaulieu L. Insights into Molecular Interactions between a GAPDH-Related Fish Antimicrobial Peptide, Analogs Thereof, and Bacterial Membranes. Biochemistry 2024; 63:1257-1269. [PMID: 38683758 PMCID: PMC11112741 DOI: 10.1021/acs.biochem.4c00049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 04/03/2024] [Accepted: 04/05/2024] [Indexed: 05/02/2024]
Abstract
Interactions between SJGAP (skipjack tuna GAPDH-related antimicrobial peptide) and four analogs thereof with model bacterial membranes were studied using Fourier-transform infrared spectroscopy (FTIR) and molecular dynamics (MD) simulations. MD trajectory analyses showed that the N-terminal segment of the peptide analogs has many contacts with the polar heads of membrane phospholipids, while the central α helix interacts strongly with the hydrophobic core of the membranes. The peptides also had a marked influence on the wave numbers associated with the phase transition of phospholipids organized as liposomes in both the interface and aliphatic chain regions of the infrared spectra, supporting the interactions observed in the MD trajectories. In addition, interesting links were found between peptide interactions with the aliphatic chains of membrane phospholipids, as determined by FTIR and from the MD trajectories, and the membrane permeabilization capacity of these peptide analogs, as previously demonstrated. To summarize, the combined experimental and computational efforts have provided insights into crucial aspects of the interactions between the investigated peptides and bacterial membranes. This work thus makes an original contribution to our understanding of the molecular interactions underlying the antimicrobial activity of these GAPDH-related antimicrobial peptides from Scombridae.
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Affiliation(s)
- Samuel Cashman-Kadri
- Institute
of Nutrition and Functional Foods (INAF), Université Laval, Québec, Québec G1V 0A6, Canada
- Department
of Food Science, Faculty of Agricultural and Food Sciences, Université Laval, Québec, Québec G1V 0A6, Canada
- Québec-Océan, Université Laval, Québec, Québec G1V 0A6, Canada
| | - Patrick Lagüe
- Department
of Biochemistry, Microbiology and Bioinformatics, Faculty of Sciences
and Engineering, Université Laval, Quebec, Québec G1V 0A6, Canada
- Institute
for Integrative Systems Biology, Pavillon Charles-Eugene-Marchand, Université Laval, 1030 Avenue de la Medecine, Québec, Québec G1V 0A6, Canada
- The
Quebec Network for Research on Protein Function, Engineering, and
Applications (PROTEO), Québec, Québec G1V 0A6, Canada
| | - Muriel Subirade
- Institute
of Nutrition and Functional Foods (INAF), Université Laval, Québec, Québec G1V 0A6, Canada
- Department
of Food Science, Faculty of Agricultural and Food Sciences, Université Laval, Québec, Québec G1V 0A6, Canada
| | - Ismail Fliss
- Institute
of Nutrition and Functional Foods (INAF), Université Laval, Québec, Québec G1V 0A6, Canada
- Department
of Food Science, Faculty of Agricultural and Food Sciences, Université Laval, Québec, Québec G1V 0A6, Canada
| | - Lucie Beaulieu
- Institute
of Nutrition and Functional Foods (INAF), Université Laval, Québec, Québec G1V 0A6, Canada
- Department
of Food Science, Faculty of Agricultural and Food Sciences, Université Laval, Québec, Québec G1V 0A6, Canada
- Québec-Océan, Université Laval, Québec, Québec G1V 0A6, Canada
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3
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Digal L, Samson SC, Stevens MA, Ghorai A, Kim H, Mifflin MC, Carney KR, Williamson DL, Um S, Nagy G, Oh DC, Mendoza MC, Roberts AG. Nonthreaded Isomers of Sungsanpin and Ulleungdin Lasso Peptides Inhibit H1299 Cancer Cell Migration. ACS Chem Biol 2024; 19:81-88. [PMID: 38109560 DOI: 10.1021/acschembio.3c00525] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2023]
Abstract
Lasso peptides are a structurally distinct class of biologically active natural products defined by their short sequences with impressively interlocked tertiary structures. Their characteristic peptide [1]rotaxane motif confers marked proteolytic and thermal resiliency, and reports on their diverse biological functions have been credited to their exceptional sequence variability. Because of these unique properties, taken together with improved technologies for their biosynthetic production, lasso peptides are emerging as a designable scaffold for peptide-based therapeutic discovery and development. Although the defined structure of lasso peptides is recognized for its remarkable properties, the role of the motif in imparting bioactivity is less understood. For example, sungsanpin and ulleungdin are natural lasso peptides that similarly exhibit encouraging cell migration inhibitory activities in A549 lung carcinoma epithelial cells, despite sharing only one-third of the sequence homology. We hypothesized that the shape of the lasso motif is beneficial for the preorganization of the conserved residues, which might be partially retained in variants lacking the threaded structure. Herein, we describe solid-phase peptide synthesis strategies to prepare acyclic, head-to-side chain (branched), and head-to-tail (macrocyclic) cyclic variants based on the sungsanpin (Sun) and ulleungdin (Uln) sequences. Proliferation assays and time-lapse cell motility imaging studies were used to evaluate the cell inhibitory properties of natural Sun compared with the synthetic Sun and Uln isomers. These studies demonstrate that the lasso motif is not a required feature to slow cancer cell migration and more generally show that these nonthreaded isomers can retain similar activity to the natural lasso peptide despite the differences in their overall structures.
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Affiliation(s)
- Lori Digal
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112, United States
| | - Shiela C Samson
- Department of Oncological Sciences, University of Utah, Huntsman Cancer Institute, Salt Lake City, Utah 84112, United States
| | - Mark A Stevens
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112, United States
| | - Abhijit Ghorai
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112, United States
| | - Hyungyu Kim
- Natural Products Research Institute, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Marcus C Mifflin
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112, United States
| | - Keith R Carney
- Department of Oncological Sciences, University of Utah, Huntsman Cancer Institute, Salt Lake City, Utah 84112, United States
| | - David L Williamson
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112, United States
| | - Soohyun Um
- College of Pharmacy, Yonsei Institute of Pharmaceutical Sciences, Yonsei University, 85 Songdogwahak-ro, Incheon 21983, Republic of Korea
| | - Gabe Nagy
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112, United States
| | - Dong-Chan Oh
- Natural Products Research Institute, College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Michelle C Mendoza
- Department of Oncological Sciences, University of Utah, Huntsman Cancer Institute, Salt Lake City, Utah 84112, United States
| | - Andrew G Roberts
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112, United States
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Vinoth V, Kaimal R, Selvamani M, Michael R, Pugazhenthiran N, Mangalaraja RV, Valdés H, Anandan S. Synergistic impact of nanoarchitectured GQDs-AgNCs(APTS) modified glassy carbon electrode in the electrochemical detection of guanine and adenine. J Electroanal Chem (Lausanne) 2023. [DOI: 10.1016/j.jelechem.2023.117302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
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5
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Effects of bacterial-derived antimicrobial solutions on shelf-life, microbiota and sensory attributes of raw chicken legs under refrigerated storage condition. Int J Food Microbiol 2022; 383:109958. [DOI: 10.1016/j.ijfoodmicro.2022.109958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 09/24/2022] [Accepted: 09/27/2022] [Indexed: 11/06/2022]
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Zhang L, Ben Said L, Hervé N, Zirah S, Diarra MS, Fliss I. Effects of drinking water supplementation with Lactobacillus reuteri, and a mixture of reuterin and microcin J25 on the growth performance, caecal microbiota and selected metabolites of broiler chickens. J Anim Sci Biotechnol 2022; 13:34. [PMID: 35246239 PMCID: PMC8897850 DOI: 10.1186/s40104-022-00683-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Accepted: 01/18/2022] [Indexed: 11/10/2022] Open
Abstract
Background Since the overuse of antibiotics in animal production has led to a selection of antibiotic-resistant pathogens that affect humans and animals as well. Scientists are therefore searching for novel natural alternatives to antibiotics. In this study Lactobacillus reuteri and a combination of reuterin and microcin J25 (RJ) were evaluated as promoters of growth and modulators of the cecal microbiota and metabolite profiles in broiler chickens. One-day-old Cobb 500 male broilers were distributed to 8 treatments: negative control (without antibiotic), positive control (bacitracin), three concentrations of RJ and three doses of L. reuteri plus glycerol. The birds (2176, 34 per pen, 8 pens per treatment) were reared for 35 d. Results The body weight of the bacitracin and 5 mmol/L reuterin combined with 0.08 μmol/L microcin J25 (10RJ) treatment group was significantly higher than that of the negative control group (P < 0.05). L. reuteri had no significant effect on broiler growth. MiSeq high-throughput sequencing of 16S rRNA showed clustering of cecal microbial operational taxonomic unit diversity according to treatment. The influence of bacitracin and 10RJ on bacterial community overall structure was similar. They promoted Ruminococcaceae, Lachnospiraceae and Lactobacillaceae, increased the relative abundance of Faecalibacterium and decreased the abundance of Bacteroides and Alistipes, while the negative control condition favored Bacteroidaceae and Rikenellaceae. Furthermore, 10RJ increased the concentration of short-chain fatty acid in the cecum and changed the metabolome overall. Conclusions These overall suggest that 10RJ can promote a host-friendly gut environment by changing the cecal microbiome and metabolome. This combination of natural antimicrobial agents in the drinking water had a positive effect on broiler growth and may be suitable as an alternative to antibiotic growth promoters. Supplementary Information The online version contains supplementary material available at 10.1186/s40104-022-00683-6.
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Affiliation(s)
- Liya Zhang
- Institute of Nutrition and Functional Foods, Université Laval, QC, Québec, Canada
| | - Laila Ben Said
- Institute of Nutrition and Functional Foods, Université Laval, QC, Québec, Canada
| | | | - Séverine Zirah
- Molécules de Communication et Adaptation des Microorganismes, Muséum National d'Histoire Naturelle, Paris, France
| | - Moussa Sory Diarra
- Guelph Research and Development Centre, Agriculture and Agri-Food Canada, Guelph, ON, Canada
| | - Ismail Fliss
- Institute of Nutrition and Functional Foods, Université Laval, QC, Québec, Canada.
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7
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Cashman-Kadri S, Lagüe P, Fliss I, Beaulieu L. Determination of the Relationships between the Chemical Structure and Antimicrobial Activity of a GAPDH-Related Fish Antimicrobial Peptide and Analogs Thereof. Antibiotics (Basel) 2022; 11:antibiotics11030297. [PMID: 35326761 PMCID: PMC8944596 DOI: 10.3390/antibiotics11030297] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 02/17/2022] [Accepted: 02/19/2022] [Indexed: 12/28/2022] Open
Abstract
The structure–activity relationships and mode of action of synthesized glyceraldehyde-3-phosphate dehydrogenase (GAPDH)-related antimicrobial peptides were investigated. Including the native skipjack tuna GAPDH-related peptide (SJGAP) of 32 amino acid residues (model for the study), 8 different peptide analogs were designed and synthesized to study the impact of net charge, hydrophobicity, amphipathicity, and secondary structure on both antibacterial and antifungal activities. A net positive charge increase, by the substitution of anionic residues or C-terminal amidation, improved the antimicrobial activity of the SJGAP analogs (minimal inhibitory concentrations of 16–64 μg/mL), whereas the alpha helix content, as determined by circular dichroism, did not have a very definite impact. The hydrophobicity of the peptides was also found to be important, especially for the improvement of antifungal activity. Membrane permeabilization assays showed that the active peptides induced significant cytoplasmic membrane permeabilization in the bacteria and yeast tested, but that this permeabilization did not cause leakage of 260 nm-absorbing intracellular material. This points to a mixed mode of action involving both membrane pore formation and targeting of intracellular components. This study is the first to highlight the links between the physicochemical properties, secondary structure, antimicrobial activity, and mechanism of action of antimicrobial peptides from scombrids or homologous to GAPDH.
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Affiliation(s)
- Samuel Cashman-Kadri
- Institute of Nutrition and Functional Foods (INAF), Université Laval, Québec, QC G1V 0A6, Canada; (S.C.-K.); (I.F.)
- Department of Food Science, Faculty of Agricultural and Food Sciences, Université Laval, Québec, QC G1V 0A6, Canada
- Québec-Océan, Université Laval, Québec, QC G1V 0A6, Canada
| | - Patrick Lagüe
- Department of Biochemistry, Microbiology and Bioinformatics, Université Laval, Québec, QC G1V 0A6, Canada;
- Institute for Integrative Systems Biology, Department of Biochemistry, Microbiology and Bio-Informatics, Pavillon, Alexandre-Vachon, Université Laval, 1045 Avenue de la Medecine, Québec, QC G1V 0A6, Canada
- The Quebec Network for Research on Protein Function, Engineering, and Applications (PROTEO), 1045 Avenue de la Medecine, Québec, QC G1V 0A6, Canada
| | - Ismail Fliss
- Institute of Nutrition and Functional Foods (INAF), Université Laval, Québec, QC G1V 0A6, Canada; (S.C.-K.); (I.F.)
- Department of Food Science, Faculty of Agricultural and Food Sciences, Université Laval, Québec, QC G1V 0A6, Canada
| | - Lucie Beaulieu
- Institute of Nutrition and Functional Foods (INAF), Université Laval, Québec, QC G1V 0A6, Canada; (S.C.-K.); (I.F.)
- Department of Food Science, Faculty of Agricultural and Food Sciences, Université Laval, Québec, QC G1V 0A6, Canada
- Québec-Océan, Université Laval, Québec, QC G1V 0A6, Canada
- Correspondence: ; Tel.: +1-418-656-2131 (ext. 404767)
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Henaux L, Pereira KD, Thibodeau J, Pilon G, Gill T, Marette A, Bazinet L. Glucoregulatory and Anti-Inflammatory Activities of Peptide Fractions Separated by Electrodialysis with Ultrafiltration Membranes from Salmon Protein Hydrolysate and Identification of Four Novel Glucoregulatory Peptides. MEMBRANES 2021; 11:membranes11070528. [PMID: 34357178 PMCID: PMC8305187 DOI: 10.3390/membranes11070528] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 07/08/2021] [Accepted: 07/09/2021] [Indexed: 11/16/2022]
Abstract
Natural bioactive peptides are suitable candidates for preventing the development of Type 2 diabetes (T2D), by reducing the various risk factors. The aim of this study was to concentrate glucoregulatory and anti-inflammatory peptides, from salmon by-products, by electrodialysis with ultrafiltration membrane (EDUF), and to identify peptides responsible for these bioactivities. Two EDUF configurations (1 and 2) were used to concentrate anionic and cationic peptides, respectively. After EDUF separation, two fractions demonstrated interesting properties: the initial fraction of the EDUF configuration 1 and the final fraction of the EDUF configuration 2 both showed biological activities to (1) increase glucose uptake in L6 muscle cells in insulin condition at 1 ng/mL (by 12% and 21%, respectively), (2) decrease hepatic glucose production in hepatic cells at 1 ng/mL in basal (17% and 16%, respectively), and insulin (25% and 34%, respectively) conditions, and (3) decrease LPS-induced inflammation in macrophages at 1 g/mL (45% and 30%, respectively). More impressive, the initial fraction of the EDUF configuration 1 (45% reduction) showed the same effect as the phenformin at 10 μM (40%), a drug used to treat T2D. Thirteen peptides were identified, chemically synthesized, and tested in-vitro for these three bioactivities. Thus, four new bioactive peptides were identified: IPVE increased glucose uptake by muscle cells, IVDI and IEGTL decreased hepatic glucose production (HGP) of insulin, whereas VAPEEHPTL decreased HGP under both basal condition and in the presence of insulin. To the best of our knowledge, this is the first time that (1) bioactive peptide fractions generated after separation by EDUF were demonstrated to be bioactive on three different criteria; all involved in the T2D, and (2) potential sequences involved in the improvement of glucose uptake and/or in the regulation of HGP were identified from a salmon protein hydrolysate.
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Affiliation(s)
- Loïc Henaux
- Department of Food Sciences and Laboratory of Food Processing and Electromembrane Processes (LTAPEM), Université Laval, Quebec City, QC G1V 0A6, Canada; (L.H.); (J.T.)
- Institute of Nutrition and Functional Foods (INAF), University Laval, Quebec City, QC G1V 0A6, Canada; (G.P.); (A.M.)
| | - Karina Danielle Pereira
- Laboratory of Biotechnology, School of Applied Sciences, University of Campinas (UNICAMP), Limeira 13484-350, SP, Brazil;
- Institute of Biosciences, State University (UNESP), Rio Claro 13506-900, SP, Brazil
| | - Jacinthe Thibodeau
- Department of Food Sciences and Laboratory of Food Processing and Electromembrane Processes (LTAPEM), Université Laval, Quebec City, QC G1V 0A6, Canada; (L.H.); (J.T.)
- Institute of Nutrition and Functional Foods (INAF), University Laval, Quebec City, QC G1V 0A6, Canada; (G.P.); (A.M.)
| | - Geneviève Pilon
- Institute of Nutrition and Functional Foods (INAF), University Laval, Quebec City, QC G1V 0A6, Canada; (G.P.); (A.M.)
- Department of Medicine, Faculty of Medicine, Quebec Heart and Lung Institute Cardiology Group, Université Laval, 2725 Chemin Ste-Foy, Quebec City, QC G1V 4G5, Canada
| | - Tom Gill
- Department of Process Engineering and Applied Science, Dalhousie University, P.O. Box 15000, Halifax, NS B3H 4R2, Canada;
| | - André Marette
- Institute of Nutrition and Functional Foods (INAF), University Laval, Quebec City, QC G1V 0A6, Canada; (G.P.); (A.M.)
- Department of Medicine, Faculty of Medicine, Quebec Heart and Lung Institute Cardiology Group, Université Laval, 2725 Chemin Ste-Foy, Quebec City, QC G1V 4G5, Canada
| | - Laurent Bazinet
- Department of Food Sciences and Laboratory of Food Processing and Electromembrane Processes (LTAPEM), Université Laval, Quebec City, QC G1V 0A6, Canada; (L.H.); (J.T.)
- Institute of Nutrition and Functional Foods (INAF), University Laval, Quebec City, QC G1V 0A6, Canada; (G.P.); (A.M.)
- Correspondence: ; Tel.: +1-418-656-2131 (ext. 407445)
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9
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Zhang L, Ben Said L, Diarra MS, Fliss I. Inhibitory Activity of Natural Synergetic Antimicrobial Consortia Against Salmonella enterica on Broiler Chicken Carcasses. Front Microbiol 2021; 12:656956. [PMID: 33995320 PMCID: PMC8116713 DOI: 10.3389/fmicb.2021.656956] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 04/06/2021] [Indexed: 11/24/2022] Open
Abstract
The currently most utilized antimicrobial agent in poultry processing facilities is peracetic acid, a chemical increasingly recognized as hazardous to human health. We evaluated the efficacy of mixtures of natural antimicrobial compounds, namely reuterin, microcin J25, and lactic acid, for reducing the viability of Salmonella enterica and total aerobes on broiler chicken carcasses. The compounds were compared singly and in combination with water and 0.1% peracetic acid. The minimum inhibitory concentrations of reuterin, lactic acid, and microcin J25 against S. enterica serovar Enteritidis were respectively 2 mM, 0.31%, and 0.03 μM. In vitro, the combinations of reuterin + lactic acid and reuterin + microcin J25 were synergic, making these compounds effective at four times lower concentrations than those used alone. Salmonella viable counts fell to zero within 10 min of contact with reuterin + lactic acid at 10 times the concentrations used in combination, compared to 18 h in the case of reuterin + microcin J25. Sprayed onto chilled chicken carcasses, this reuterin + lactic acid mixture reduced Salmonella spp. counts by 2.02 Log CFU/g, whereas reuterin + microcin J25 and peracetic acid reduced them by respectively 0.83 and 1.13 Log CFU/g. The synergy of reuterin with lactic acid or microcin J25 as inhibitors of bacterial growth was significant. Applied as post-chill spray, these mixtures could contribute to food safety by decreasing Salmonella counts on chicken carcasses.
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Affiliation(s)
- Liya Zhang
- Institute of Nutrition and Functional Foods, Université Laval, Québec, QC, Canada
| | - Laila Ben Said
- Institute of Nutrition and Functional Foods, Université Laval, Québec, QC, Canada
| | - Moussa Sory Diarra
- Guelph Research and Development Centre, Agriculture and Agri-Food Canada, Guelph, ON, Canada
| | - Ismail Fliss
- Institute of Nutrition and Functional Foods, Université Laval, Québec, QC, Canada
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10
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Casciaro B, Cappiello F, Verrusio W, Cacciafesta M, Mangoni ML. Antimicrobial Peptides and their Multiple Effects at Sub-Inhibitory Concentrations. Curr Top Med Chem 2021; 20:1264-1273. [PMID: 32338221 DOI: 10.2174/1568026620666200427090912] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Revised: 03/06/2020] [Accepted: 03/16/2020] [Indexed: 01/10/2023]
Abstract
The frequent occurrence of multidrug-resistant strains to conventional antimicrobials has led to a clear decline in antibiotic therapies. Therefore, new molecules with different mechanisms of action are extremely necessary. Due to their unique properties, antimicrobial peptides (AMPs) represent a valid alternative to conventional antibiotics and many of them have been characterized for their activity and cytotoxicity. However, the effects that these peptides cause at concentrations below the minimum growth inhibitory concentration (MIC) have yet to be fully analyzed along with the underlying molecular mechanism. In this mini-review, the ability of AMPs to synergize with different antibiotic classes or different natural compounds is examined. Furthermore, data on microbial resistance induction are reported to highlight the importance of antibiotic resistance in the fight against infections. Finally, the effects that sub-MIC levels of AMPs can have on the bacterial pathogenicity are summarized while showing how signaling pathways can be valid therapeutic targets for the treatment of infectious diseases. All these aspects support the high potential of AMPs as lead compounds for the development of new drugs with antibacterial and immunomodulatory activities.
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Affiliation(s)
- Bruno Casciaro
- Center For Life Nano Science @ Sapienza, Italian Institute of Technology, Rome 00161, Italy
| | - Floriana Cappiello
- Laboratory affiliated to Pasteur Italia-Fondazione Cenci Bolognetti, Department of Biochemical Sciences, Sapienza University of Rome, P.le Aldo Moro 5, Rome 00185, Italy
| | - Walter Verrusio
- Department of Clinical Internal, Anesthesiological and Cardiovascular Sciences, Sapienza University of Rome, Rome 00185, Italy
| | - Mauro Cacciafesta
- Department of Clinical Internal, Anesthesiological and Cardiovascular Sciences, Sapienza University of Rome, Rome 00185, Italy
| | - Maria Luisa Mangoni
- Laboratory affiliated to Pasteur Italia-Fondazione Cenci Bolognetti, Department of Biochemical Sciences, Sapienza University of Rome, P.le Aldo Moro 5, Rome 00185, Italy
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11
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Rowe SM, Spring DR. The role of chemical synthesis in developing RiPP antibiotics. Chem Soc Rev 2021; 50:4245-4258. [DOI: 10.1039/d0cs01386b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
This tutorial review discusses the potential of ribosomally synthesised and post-translationally modified peptides (RiPPs) as antimicrobials and looks at the chemical synthesis of three classes of RiPP: lasso peptides, cyclotides, and lanthipeptides.
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Affiliation(s)
- Sam M. Rowe
- Department of Chemistry
- University of Cambridge
- Cambridge
- UK
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12
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Seal BS, Drider D, Oakley BB, Brüssow H, Bikard D, Rich JO, Miller S, Devillard E, Kwan J, Bertin G, Reeves S, Swift SM, Raicek M, Gay CG. Microbial-derived products as potential new antimicrobials. Vet Res 2018; 49:66. [PMID: 30060765 PMCID: PMC6066938 DOI: 10.1186/s13567-018-0563-5] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Accepted: 02/01/2018] [Indexed: 12/24/2022] Open
Abstract
Due to the continuing global concerns involving antibiotic resistance, there is a need for scientific forums to assess advancements in the development of antimicrobials and their alternatives that might reduce development and spread of antibiotic resistance among bacterial pathogens. The objectives of the 2nd International Symposium on Alternatives to Antibiotics were to highlight promising research results and novel technologies that can provide alternatives to antibiotics for use in animal health and production, assess challenges associated with their authorization and commercialization for use, and provide actionable strategies to support their development. The session on microbial-derived products was directed at presenting novel technologies that included exploiting CRISPR-Cas nucleases to produce sequence-specific antimicrobials, probiotics development via fecal microbiome transplants among monogastric production animals such as chickens and mining microbial sources such as bacteria or yeast to identify new antimicrobial compounds. Other research has included continuing development of antimicrobial peptides such as newly discovered bacteriocins as alternatives to antibiotics, use of bacteriophages accompanied by development of unique lytic proteins with specific cell-wall binding domains and novel approaches such as microbial-ecology guided discovery of anti-biofilm compounds discovered in marine environments. The symposium was held at the Headquarters of the World Organisation for Animal Health (OIE) in Paris, France during 12-15 December 2016.
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Affiliation(s)
- Bruce S. Seal
- Biology Program, Oregon State University Cascades, 1500 SW Chandler Avenue, Bend, OR 97702 USA
| | - Djamel Drider
- Institut Charles Viollette, Université Lille 1, 59000 Lille, France
| | - Brian B. Oakley
- College of Veterinary Medicine, Western University of Health Sciences, 309 E Second St, Pomona, CA 91766-1854 USA
| | - Harald Brüssow
- Nestlé Research Centre, Nestec Ltd, Vers-chez-les-Blanc, 1000 Lausanne 26, Switzerland
| | - David Bikard
- Synthetic Biology Group, Microbiology Department, Institut Pasteur, 75015 Paris, France
| | - Joseph O. Rich
- Renewable Product Technology Research Unit, National Center for Agricultural Utilization Research, Agricultural Research Service, U.S. Department of Agriculture, 1815 North University Street, Peoria, IL 61604 USA
| | - Stefan Miller
- Lisando GmbH, Josef-Engert-Straße 13, 93053 Regensburg, Germany
| | - Estelle Devillard
- Nutrition Research Team, Adisseo France S.A.S.-CERN, 6 Route Noire, 03600 Commentry, France
| | - Jason Kwan
- School of Pharmacy, University of Wisconsin, 777 Highland Ave., Madison, WI 53705-2222 USA
| | - Gérard Bertin
- European Probiotic Association & Erawan Consulting SARL, Asnières Affaires, 25 rue des Bas, 92600 Asnières-sur-Seine, France
| | - Stuart Reeves
- Embria Health Sciences, 2105 SE Creekview Dr., Ankeny, IA 50021 USA
| | - Steven M. Swift
- Animal Biosciences and Biotechnology Laboratory, BARC, Agricultural Research Service, USDA, 10300 Baltimore Ave, Beltsville, MD 20705-2350 USA
| | - Margot Raicek
- Intern, World Organisation for Animal Health (OIE), 12 rue de Prony, 75017 Paris, France
| | - Cyril G. Gay
- National Program Staff-Animal Health, Agricultural Research Service, US Department of Agriculture, Beltsville, MD 20705 USA
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13
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Zhang J, Chen X, Liu P, Zhao J, Sun J, Guan W, Johnston LJ, Levesque CL, Fan P, He T, Zhang G, Ma X. Dietary Clostridium butyricum Induces a Phased Shift in Fecal Microbiota Structure and Increases the Acetic Acid-Producing Bacteria in a Weaned Piglet Model. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:5157-5166. [PMID: 29683328 DOI: 10.1021/acs.jafc.8b01253] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Clostridium butyricum is known as a butyrate producer and a regulator of gut health, but whether it exerts a beneficial effect as a dietary supplement via modulating the intestinal microbiota remains elusive. This study investigated the impact of C. butyricum on the fecal microbiota composition and their metabolites 14 and 28 days after weaning with 10 g/kg dietary supplementation of C. butyricum. Dynamic changes of microbial compositions showed dramatically increasing Selenomonadales and decreasing Clostridiales on days 14 and 28. Within Selenomonadales, Megasphaera became the main responder by increasing from 3.79 to 11.31%. Following the prevalence of some acetate producers ( Magasphaera) and utilizers ( Eubacterium_hallii) at the genus level and even with a significant decrease in fecal acetate on day 28, the present data suggested that C. butyricum influenced microbial metabolism by optimizing the structure of microbiota and enhancing acetate production and utilization for butyrate production.
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Affiliation(s)
- Jie Zhang
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology , China Agricultural University , Beijing 100193 , People's Republic of China
- Department of Animal Husbandry and Veterinary , Beijing Vocational College of Agriculture , Beijing 102442 , People's Republic of China
| | - Xiyue Chen
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology , China Agricultural University , Beijing 100193 , People's Republic of China
| | - Ping Liu
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology , China Agricultural University , Beijing 100193 , People's Republic of China
| | - Jinbiao Zhao
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology , China Agricultural University , Beijing 100193 , People's Republic of China
| | - Jian Sun
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology , China Agricultural University , Beijing 100193 , People's Republic of China
- Department of Animal Husbandry and Veterinary , Beijing Vocational College of Agriculture , Beijing 102442 , People's Republic of China
| | - Wenyi Guan
- Department of Animal Husbandry and Veterinary , Beijing Vocational College of Agriculture , Beijing 102442 , People's Republic of China
| | - Lee J Johnston
- West Central Research & Outreach Center , University of Minnesota , Morris , Minnesota 56267 , United States
| | - Crystal L Levesque
- Department of Animal Science, College of Agriculture and Biological Sciences , South Dakota State University , Brookings , South Dakota 57007 , United States
| | - Peixin Fan
- Emerging Pathogens Institute , University of Florida , Gainesville , Florida 32608 , United States
- Department of Animal Sciences, Institute of Food and Agricultural Sciences , University of Florida , Gainesville , Florida 32608 , United States
| | - Ting He
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology , China Agricultural University , Beijing 100193 , People's Republic of China
| | - Guolong Zhang
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology , China Agricultural University , Beijing 100193 , People's Republic of China
- Department of Animal Science , Oklahoma State University , Stillwater , Oklahoma 74078 , United States
| | - Xi Ma
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology , China Agricultural University , Beijing 100193 , People's Republic of China
- College of Animal Science and Technology , Qingdao Agricultural University , Qingdao , 266109 , People's Republic of China
- Department of Internal Medicine, Department of Biochemistry , University of Texas Southwestern Medical Center , Dallas , Texas 75230 , United States
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14
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Ahmed TAE, Hammami R. Recent insights into structure-function relationships of antimicrobial peptides. J Food Biochem 2018; 43:e12546. [PMID: 31353490 DOI: 10.1111/jfbc.12546] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Revised: 03/06/2018] [Accepted: 03/07/2018] [Indexed: 12/23/2022]
Abstract
The application of antimicrobial peptides (AMPs) in food preservation presents a promising alternative and offers many benefits, such as reducing the use of chemical preservatives, reducing food losses due to spoilage, and development of health-promoting food supplements. The biological activity of AMPs largely dependent on several physicochemical features including charge, the degree of helicity, hydrophobicity, and sequence. The present review provides an overview of the structural classification of AMPs emphasizing the importance of their structural features for biological activity, followed by the description of some antimicrobial mechanism of action. Despite the several hurdles that must be overcome for the exploitation of food-derived AMPs in drug discovery and food systems, the developments discussed in this review offer a taste of future trends in food and pharmaceutical applications of these intriguing molecules. PRACTICAL APPLICATIONS: Numerous AMPs have been reported in recent years as naturally present or released from food proteins upon enzymatic digestion during food processing, fermentation, or gastrointestinal transit. Particularly, food-released AMPs is a promising alternative to satisfy consumer demands for safe, ready-to-eat, extended shelf-life, fresh-tasting, and minimally processed foods, without chemical additives. The potential of several AMPs to inhibit foodborne pathogens is increasingly studied in various food matrices including dairy products, meat, fruits, and beverages. Although extensive progress has been made with respect to our understanding of AMPs structure/function, additional thorough investigation of the factors influencing peptide activity is required. The time has now come for the development of nutraceuticals and pharmaceutical products containing food-derived AMPs. Despite the several hurdles that must be overcome for the exploitation of AMPs, the features and developments discussed in this review offer a taste of future trends in food and pharmaceutical applications of these intriguing molecules.
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Affiliation(s)
- Tamer A E Ahmed
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada.,Medical Biotechnology Department, Genetic Engineering and Biotechnology Research Institute, City of Scientific Research and Technology Applications (SRTA-City), Alexandria, Egypt
| | - Riadh Hammami
- School of Nutrition Sciences, Faculty of Health Sciences, University of Ottawa, Ottawa, Ontario, Canada
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15
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Martin-Gómez H, Tulla-Puche J. Lasso peptides: chemical approaches and structural elucidation. Org Biomol Chem 2018; 16:5065-5080. [DOI: 10.1039/c8ob01304g] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The diverse functionality and the extraordinary stability of lasso peptides make these molecules attractive scaffolds for drug discovery. The ability to generate lasso peptides chemically remains a challenging endeavor.
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Affiliation(s)
| | - Judit Tulla-Puche
- Department of Inorganic and Organic Chemistry – Organic Chemistry Section
- University of Barcelona
- Barcelona
- Spain
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16
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Liu P, Zhao J, Guo P, Lu W, Geng Z, Levesque CL, Johnston LJ, Wang C, Liu L, Zhang J, Ma N, Qiao S, Ma X. Dietary Corn Bran Fermented by Bacillus subtilis MA139 Decreased Gut Cellulolytic Bacteria and Microbiota Diversity in Finishing Pigs. Front Cell Infect Microbiol 2017; 7:526. [PMID: 29312900 PMCID: PMC5744180 DOI: 10.3389/fcimb.2017.00526] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Accepted: 12/12/2017] [Indexed: 01/29/2023] Open
Abstract
Solid-state fermentation of feedstuffs by Bacillus subtilis MA139 can reduce insoluble dietary fiber content in vitro and improve growth performance in pigs. This study was conducted to investigate the effects of dietary corn bran (CB) fermented by B. subtilis on growth performance and gut microbiota composition in finishing pigs. A total of 60 finishing pigs were allocated to 3 dietary treatments consisting of a control (CON) diet, a 10% CB diet, and a 10% fermented CB (FCB) diet in a 21 d feeding trial. Growth performance and nutrient digestibility were evaluated. Fecal samples were determined for bacterial community diversity by 16S rRNA gene amplicon sequencing. The dietary CB and FCB did not affect growth performance of finishing pigs. The digestibility of organic matter was decreased in both CB and FCB treatments compared with CON group (P < 0.05). The α-diversity for bacterial community analysis of Chao 1 in FCB treatment was lower than CON treatment (P < 0.05). The Fibrobacteres phylum belongs to cellulolytic bacteria was isolated, and their relative abundance in CB group showed no difference between CON and FCB treatments. The abundance of Lachnospiraceae_NK4A136_group in CB treatment was higher than CON and FCB groups (P < 0.05), whereas the population of norank_f_Prevotellaceae was higher in FCB group compared to CON and CB groups (P < 0.05). In conclusion, dietary FCB decreased the abundance of bacterial communities, particularly the population of bacteria related to cellulolytic degradation.
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Affiliation(s)
- Ping Liu
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Jinbiao Zhao
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Pingting Guo
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Wenqing Lu
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Zhengying Geng
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Crystal L Levesque
- Department of Animal Sciences, South Dakota State University, Brookings, SD, United States
| | - Lee J Johnston
- Swine Nutrition and Production, West Central Research and Outreach Center, University of Minnesota, Morris, MN, United States
| | - Chunlin Wang
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Ling Liu
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Jie Zhang
- Department of Animal Husbandry and Veterinary Medicine, Beijing Vocational College of Agriculture, Beijing, China
| | - Ning Ma
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Shiyan Qiao
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Xi Ma
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China.,Department of Internal Medicine, Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas, TX, United States
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17
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Gomaa AI, Martinent C, Hammami R, Fliss I, Subirade M. Dual Coating of Liposomes as Encapsulating Matrix of Antimicrobial Peptides: Development and Characterization. Front Chem 2017; 5:103. [PMID: 29204423 PMCID: PMC5698301 DOI: 10.3389/fchem.2017.00103] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Accepted: 11/03/2017] [Indexed: 11/13/2022] Open
Abstract
Antimicrobial peptides have been proposed as a potential biopreservatives in pharmaceutical research and agribusiness. However, many limitations hinder their utilization, such as their vulnerability to proteolytic digestion and their potential interaction with other food ingredients in complex food systems. One approach to overcome such problems is developing formulations entrapping and thereby protecting the antimicrobial peptides. Liposome encapsulation is a strategy that could be implemented to combine protection of the antimicrobial activity of the peptides from proteolytic enzymes and the controlled release of the encapsulated active ingredients. The objective of this study was to develop dual-coated food grade liposome formulations for oral administration of bacteriocins. The formulations were developed from anionic and cationic phospholipids as models of negatively and positively charged liposomes, respectively. Liposomes were prepared by the hydration of lipid films. Subsequently, the liposomes were coated with two layers comprising a biopolymer network (pectin) and whey proteins (WPI) in order to further improve their stability and enable the gradual release of the developed liposomes. Liposomes were characterized for their size, charge, molecular structure, morphology, encapsulation efficiency, and release. The results of FTIR, zeta potential, size distribution, and transmission electron microscopy (TEM) confirmed that the liposomes were efficiently coated. Ionic interactions were involved in the stabilization of the positively charged liposome formulations. Negatively charge liposome formulations were stabilized through weak interactions. The release study proved the efficiency of dual coating on the protection of liposomes against gastrointestinal digestion. This work is the first to study the encapsulation of antimicrobial peptides in dual-coated liposomes. Furthermore, the work successfully encapsulated MccJ25 in both negative and positive liposome models.
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Affiliation(s)
- Ahmed I Gomaa
- Department of Food Science, Laval University, Quebec City, QC, Canada.,Institute of Nutrition and Functional Foods, Quebec City, QC, Canada.,National Research Center, Food Science and Nutrition Department, Cairo, Egypt
| | - Cynthia Martinent
- Department of Food Science, Laval University, Quebec City, QC, Canada.,Institute of Nutrition and Functional Foods, Quebec City, QC, Canada
| | - Riadh Hammami
- Faculty of Health Sciences, School of Nutrition Sciences, University of Ottawa, Ottawa, ON, Canada
| | - Ismail Fliss
- Department of Food Science, Laval University, Quebec City, QC, Canada.,Institute of Nutrition and Functional Foods, Quebec City, QC, Canada
| | - Muriel Subirade
- Department of Food Science, Laval University, Quebec City, QC, Canada.,Institute of Nutrition and Functional Foods, Quebec City, QC, Canada
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18
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Zhao N, Pan Y, Cheng Z, Liu H. Lasso peptide, a highly stable structure and designable multifunctional backbone. Amino Acids 2016; 48:1347-56. [PMID: 27074719 DOI: 10.1007/s00726-016-2228-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2016] [Accepted: 04/01/2016] [Indexed: 12/18/2022]
Abstract
Lasso peptide belongs to a new class of natural product with highly compact and stable structure. It has varieties of biological activities, among which the most important one is its antibacterial efficacy. Novel lasso peptides have been constantly discovered and analyzed by advanced techniques, and the biosynthesis or even chemical synthesis of lasso peptide has been studied after learning its constituent amino acids and maturation process. Structural identification of lasso peptide provides information for elucidating the mechanisms of its antibacterial activity and basis for further modifications. Ring of lasso peptide is the key to both its highly compact and stable structure and its intrinsic antibacterial property. The loop has been considered as suitable modification region of lasso peptide, such as V11-S18 of MccJ25 being modifiable without disrupting the lasso structure in biosynthesis. The tail is the immunity protein that can export lasso peptide out of its produced strain and serve as a self-protection mechanism at the same time. Most of currently known lasso peptides are non-pathogenic, which implies that the modified lasso peptides are promising candidates for medical applications. Arginine, glycine, and aspartic acid as a ligands of cancer-specific receptor have been grafted to the loop of lasso peptide without losing its bioactivity, and many other targets are expected to be used for lasso peptide modification. Multi-molecular modification and large-scale production need to be studied and solved in future for designing and using multifunctional lasso peptide based on its extraordinary stable structure.
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Affiliation(s)
- Ning Zhao
- Institute of Molecular Medicine, College of Life and Health Sciences, Northeastern University, Shenyang, 110000, China
| | - Yongxu Pan
- Institute of Molecular Medicine, College of Life and Health Sciences, Northeastern University, Shenyang, 110000, China
| | - Zhen Cheng
- Department of Radiology, Molecular Imaging Program at Stanford (MIPS), Bio-X Program and Stanford Cancer Center, Stanford University School of Medicine, Stanford, CA, 94305, USA.
| | - Hongguang Liu
- Institute of Molecular Medicine, College of Life and Health Sciences, Northeastern University, Shenyang, 110000, China.
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19
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Characterization of antibacterial activity from protein hydrolysates of the macroalga Saccharina longicruris and identification of peptides implied in bioactivity. J Funct Foods 2015. [DOI: 10.1016/j.jff.2015.06.026] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
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