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Li Y, Li W, Zhou D, Zeng Z, Han Y, Chen Q, Wang Z, Wang G, Feng S, Cao W. Microcin Y utilizes its stable structure and biological activity to regulate the metabolism of intestinal probiotics and effectively clear gut Salmonella. Int J Biol Macromol 2024; 274:133290. [PMID: 38908631 DOI: 10.1016/j.ijbiomac.2024.133290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2024] [Revised: 06/09/2024] [Accepted: 06/19/2024] [Indexed: 06/24/2024]
Abstract
MccY is a novel, structurally stable microcin with antibacterial activity against Enterobacteriaceae. However, the bioavailability of orally administrated MccY is unknown. This study evaluated the effects of MccY as a antimicrobial on pre-digestion in vitro and its intake, digestion and gut metabolism in vivo. The result of pre-digestion results that MccY maintained its biological activity and was resistant to decomposition. The study established a safe threshold of 4.46-9.92 mg/kg for the MccY dosage-body weight relationship in BALB/c mice. Mice fed with MccY demonstrated improved body weight and intestinal barrier function, accompanied with increased IgM immunogenicity and decreased levels of TNF-α, IL-6, and IL-10 in the intestine. MccY significantly facilitates the growth and activity of probiotics including Lactobacillus, Prevotella, and Bacteroides, and leading to the production of SCFAs and MCFAs during bacterial interactions. Furthermore, MccY effectively protects against the inflammatory response caused by Salmonella Typhimurium infection and effectively clears the Salmonella bacteria from the gut. In conclusion, MccY is seen as a promising new therapeutic target drug for enhancing the intestinal microbe-barrier axis and preventing enteritis.
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Affiliation(s)
- Yu Li
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Wenjing Li
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Di Zhou
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Zhiwei Zeng
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Yu Han
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Qinxi Chen
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Zepeng Wang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Guyao Wang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Saixiang Feng
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China; Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, China; Key Laboratory of Zoonosis of Ministry of Agriculture and Rural Affairs, Guangzhou, China; Key Laboratory of Veterinary Vaccine Innovation of the Ministry of Agriculture and Rural Affairs, Guangzhou, China; National and Regional Joint Engineering Laboratory for Medicament of Zoonosis Prevention and Control, China.
| | - Weisheng Cao
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China; Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, China; Key Laboratory of Zoonosis of Ministry of Agriculture and Rural Affairs, Guangzhou, China; Key Laboratory of Veterinary Vaccine Innovation of the Ministry of Agriculture and Rural Affairs, Guangzhou, China; National and Regional Joint Engineering Laboratory for Medicament of Zoonosis Prevention and Control, China.
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2
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Baquero F, Beis K, Craik DJ, Li Y, Link AJ, Rebuffat S, Salomón R, Severinov K, Zirah S, Hegemann JD. The pearl jubilee of microcin J25: thirty years of research on an exceptional lasso peptide. Nat Prod Rep 2024; 41:469-511. [PMID: 38164764 DOI: 10.1039/d3np00046j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2024]
Abstract
Covering: 1992 up to 2023Since their discovery, lasso peptides went from peculiarities to be recognized as a major family of ribosomally synthesized and post-translationally modified peptide (RiPP) natural products that were shown to be spread throughout the bacterial kingdom. Microcin J25 was first described in 1992, making it one of the earliest known lasso peptides. No other lasso peptide has since then been studied to such an extent as microcin J25, yet, previous review articles merely skimmed over all the research done on this exceptional lasso peptide. Therefore, to commemorate the 30th anniversary of its first report, we give a comprehensive overview of all literature related to microcin J25. This review article spans the early work towards the discovery of microcin J25, its biosynthetic gene cluster, and the elucidation of its three-dimensional, threaded lasso structure. Furthermore, the current knowledge about the biosynthesis of microcin J25 and lasso peptides in general is summarized and a detailed overview is given on the biological activities associated with microcin J25, including means of self-immunity, uptake into target bacteria, inhibition of the Gram-negative RNA polymerase, and the effects of microcin J25 on mitochondria. The in vitro and in vivo models used to study the potential utility of microcin J25 in a (veterinary) medicine context are discussed and the efforts that went into employing the microcin J25 scaffold in bioengineering contexts are summed up.
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Affiliation(s)
- Fernando Baquero
- Department of Microbiology, Ramón y Cajal University Hospital and Ramón y Cajal Institute for Health Research (IRYCIS), Madrid, Spain
- Network Center for Research in Epidemiology and Public Health (CIBER-ESP), Madrid, Spain
| | - Konstantinos Beis
- Department of Life Sciences, Imperial College London, London, SW7 2AZ, UK
- Rutherford Appleton Laboratory, Research Complex at Harwell, Didcot, Oxfordshire OX11 0FA, UK
| | - David J Craik
- Institute for Molecular Bioscience, Australian Research Council Centre of Excellence for Innovations in Peptide and Protein Science, The University of Queensland, 4072 Brisbane, Queensland, Australia
| | - Yanyan Li
- Laboratoire Molécules de Communication et Adaptation des Microorganismes (MCAM), UMR 7245, Muséum National d'Histoire Naturelle (MNHN), Centre National de la Recherche Scientifique (CNRS), Paris, France
| | - A James Link
- Departments of Chemical and Biological Engineering, Chemistry, and Molecular Biology, Princeton University, Princeton, NJ 08544, USA
| | - Sylvie Rebuffat
- Laboratoire Molécules de Communication et Adaptation des Microorganismes (MCAM), UMR 7245, Muséum National d'Histoire Naturelle (MNHN), Centre National de la Recherche Scientifique (CNRS), Paris, France
| | - Raúl Salomón
- Instituto de Química Biológica "Dr Bernabé Bloj", Facultad de Bioquímica, Química y Farmacia, Instituto Superior de Investigaciones Biológicas (INSIBIO), CONICET-UNT, San Miguel de Tucumán, Argentina
| | - Konstantin Severinov
- Waksman Institute for Microbiology, Rutgers, The State University of New Jersey, Piscataway, NJ, USA
| | - Séverine Zirah
- Laboratoire Molécules de Communication et Adaptation des Microorganismes (MCAM), UMR 7245, Muséum National d'Histoire Naturelle (MNHN), Centre National de la Recherche Scientifique (CNRS), Paris, France
| | - Julian D Hegemann
- Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research (HZI), Saarland University Campus, 66123 Saarbrücken, Germany.
- Department of Pharmacy, Campus E8 1, Saarland University, 66123 Saarbrücken, Germany
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3
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Wang Y, Zhu S, Zhang T, Gao M, Zhan X. New Horizons in Probiotics: Unraveling the Potential of Edible Microbial Polysaccharides through In Vitro Digestion Models. Foods 2024; 13:713. [PMID: 38472826 DOI: 10.3390/foods13050713] [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: 01/23/2024] [Revised: 02/16/2024] [Accepted: 02/17/2024] [Indexed: 03/14/2024] Open
Abstract
In vitro digestion models, as innovative assessment tools, possess advantages such as speed, high throughput, low cost, and high repeatability. They have been widely applied to the investigation of food digestion behavior and its potential impact on health. In recent years, research on edible polysaccharides in the field of intestinal health has been increasing. However, there is still a lack of systematic reviews on the application of microbial-derived edible polysaccharides in in vitro intestinal models. This review thoroughly discusses the limitations and challenges of static and dynamic in vitro digestion experiments, while providing an in-depth introduction to several typical in vitro digestion models. In light of this, we focus on the degradability of microbial polysaccharides and oligosaccharides, with a particular emphasis on edible microbial polysaccharides typically utilized in the food industry, such as xanthan gum and gellan gum, and their potential impacts on intestinal health. Through this review, a more comprehensive understanding of the latest developments in microbial polysaccharides, regarding probiotic delivery, immobilization, and probiotic potential, is expected, thus providing an expanded and deepened perspective for their application in functional foods.
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Affiliation(s)
- Yuying Wang
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Shengyong Zhu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Tiantian Zhang
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Minjie Gao
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Xiaobei Zhan
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
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4
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Cha Y, Kim W, Park Y, Kim M, Son Y, Park W. Antagonistic actions of Paucibacter aquatile B51 and its lasso peptide paucinodin toward cyanobacterial bloom-forming Microcystis aeruginosa PCC7806. JOURNAL OF PHYCOLOGY 2024; 60:152-169. [PMID: 38073162 DOI: 10.1111/jpy.13412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 10/04/2023] [Accepted: 11/08/2023] [Indexed: 02/17/2024]
Abstract
Superior antagonistic activity against axenic Microcystis aeruginosa PCC7806 was observed with Paucibacter sp. B51 isolated from cyanobacterial bloom samples among 43 tested freshwater bacterial species. Complete genome sequencing, analyzing average nucleotide identity and digital DNA-DNA hybridization, designated the B51 strain as Paucibacter aquatile. Electron and fluorescence microscopic image analyses revealed the presence of the B51 strain in the vicinity of M. aeruginosa cells, which might provoke direct inhibition of the photosynthetic activity of the PCC7806 cells, leading to perturbation of cellular metabolisms and consequent cell death. Our speculation was supported by the findings that growth failure of the PCC7806 cells led to low pH conditions with fewer chlorophylls and down-regulation of photosystem genes (e.g., psbD and psaB) during their 48-h co-culture condition. Interestingly, the concentrated ethyl acetate extracts obtained from B51-grown supernatant exhibited a growth-inhibitory effect on PCC7806. The physical separation of both strains by a filter system led to no inhibitory activity of the B51 cells, suggesting that contact-mediated anti-cyanobacterial compounds might also be responsible for hampering the growth of the PCC7806 cells. Bioinformatic tools identified 12 gene clusters that possibly produce secondary metabolites, including a class II lasso peptide in the B51 genome. Further chemical analysis demonstrated anti-cyanobacterial activity from fractionated samples having a rubrivinodin-like lasso peptide, named paucinodin. Taken together, both contact-mediated inhibition of photosynthesis and the lasso peptide secretion of the B51 strain are responsible for the anti-cyanobacterial activity of P. aquatile B51.
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Affiliation(s)
- Yeji Cha
- Laboratory of Molecular Environmental Microbiology, Department of Environmental Science and Ecological Engineering, Korea University, Seoul, Republic of Korea
| | - Wonjae Kim
- Laboratory of Molecular Environmental Microbiology, Department of Environmental Science and Ecological Engineering, Korea University, Seoul, Republic of Korea
| | - Yerim Park
- Laboratory of Molecular Environmental Microbiology, Department of Environmental Science and Ecological Engineering, Korea University, Seoul, Republic of Korea
| | - Minkyung Kim
- Laboratory of Molecular Environmental Microbiology, Department of Environmental Science and Ecological Engineering, Korea University, Seoul, Republic of Korea
| | - Yongjun Son
- Laboratory of Molecular Environmental Microbiology, Department of Environmental Science and Ecological Engineering, Korea University, Seoul, Republic of Korea
| | - Woojun Park
- Laboratory of Molecular Environmental Microbiology, Department of Environmental Science and Ecological Engineering, Korea University, Seoul, Republic of Korea
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Lessard-Lord J, Lupien-Meilleur J, Roussel C, Gosselin-Cliche B, Silvestri C, Di Marzo V, Roy D, Rousseau E, Desjardins Y. Mathematical modeling of fluid dynamics in in vitro gut fermentation systems: A new tool to improve the interpretation of microbial metabolism. FASEB J 2024; 38:e23398. [PMID: 38214938 DOI: 10.1096/fj.202301739rr] [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: 08/28/2023] [Revised: 12/13/2023] [Accepted: 12/15/2023] [Indexed: 01/13/2024]
Abstract
In vitro systems are widely employed to assess the impact of dietary compounds on the gut microbiota and their conversion into beneficial bacterial metabolites. However, the complex fluid dynamics and multi-segmented nature of these systems can complicate the comprehensive analysis of dietary compound fate, potentially confounding physical dilution or washout with microbial catabolism. In this study, we developed fluid dynamics models based on sets of ordinary differential equations to simulate the behavior of an inert compound within two commonly used in vitro systems: the continuous two-stage PolyFermS system and the semi-continuous multi-segmented SHIME® system as well as into various declinations of those systems. The models were validated by investigating the fate of blue dextran, demonstrating excellent agreement between experimental and modeling data (with r2 values ranging from 0.996 to 0.86 for different approaches). As a proof of concept for the utility of fluid dynamics models in in vitro system, we applied generated models to interpret metabolomic data of procyanidin A2 (ProA2) generated from the addition of proanthocyanidin (PAC)-rich cranberry extract to both the PolyFermS and SHIME® systems. The results suggested ProA2 degradation by the gut microbiota when compared to the modeling of an inert compound. Models of fluid dynamics developed in this study provide a foundation for comprehensive analysis of gut metabolic data in commonly utilized in vitro PolyFermS and SHIME® bioreactor systems and can enable a more accurate understanding of the contribution of bacterial metabolism to the variability in the concentration of target metabolites.
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Affiliation(s)
- Jacob Lessard-Lord
- Institute of Nutrition and Functional Foods (INAF), Faculty of Agriculture and Food Sciences, Université Laval, Quebec, Quebec, Canada
- Nutrition, Health and Society Centre (NUTRISS), INAF, Université Laval, Quebec, Quebec, Canada
- Department of Plant Science, Faculty of Agriculture and Food Sciences, Université Laval, Quebec, Quebec, Canada
| | - Joseph Lupien-Meilleur
- Institute of Nutrition and Functional Foods (INAF), Faculty of Agriculture and Food Sciences, Université Laval, Quebec, Quebec, Canada
- Nutrition, Health and Society Centre (NUTRISS), INAF, Université Laval, Quebec, Quebec, Canada
- Department of Food Science, Faculty of Agriculture and Food Sciences, Université Laval, Quebec, Quebec, Canada
| | - Charlène Roussel
- Institute of Nutrition and Functional Foods (INAF), Faculty of Agriculture and Food Sciences, Université Laval, Quebec, Quebec, Canada
- Nutrition, Health and Society Centre (NUTRISS), INAF, Université Laval, Quebec, Quebec, Canada
- Canada Excellence Research Chair on the Microbiome-Endocannabinoidome Axis in Metabolic Health, Université Laval, Quebec, Quebec, Canada
| | | | - Cristoforo Silvestri
- Institute of Nutrition and Functional Foods (INAF), Faculty of Agriculture and Food Sciences, Université Laval, Quebec, Quebec, Canada
- Nutrition, Health and Society Centre (NUTRISS), INAF, Université Laval, Quebec, Quebec, Canada
- Canada Excellence Research Chair on the Microbiome-Endocannabinoidome Axis in Metabolic Health, Université Laval, Quebec, Quebec, Canada
- Centre de Recherche Universitaire de l'Institut de Cardiologie et Pneumologie de Québec (CRIUCPQ), Department of Medicine, Faculty of Medicine, Université Laval, Quebec, Quebec, Canada
| | - Vincenzo Di Marzo
- Institute of Nutrition and Functional Foods (INAF), Faculty of Agriculture and Food Sciences, Université Laval, Quebec, Quebec, Canada
- Nutrition, Health and Society Centre (NUTRISS), INAF, Université Laval, Quebec, Quebec, Canada
- Canada Excellence Research Chair on the Microbiome-Endocannabinoidome Axis in Metabolic Health, Université Laval, Quebec, Quebec, Canada
- Centre de Recherche Universitaire de l'Institut de Cardiologie et Pneumologie de Québec (CRIUCPQ), Department of Medicine, Faculty of Medicine, Université Laval, Quebec, Quebec, Canada
| | - Denis Roy
- Institute of Nutrition and Functional Foods (INAF), Faculty of Agriculture and Food Sciences, Université Laval, Quebec, Quebec, Canada
- Nutrition, Health and Society Centre (NUTRISS), INAF, Université Laval, Quebec, Quebec, Canada
- Department of Food Science, Faculty of Agriculture and Food Sciences, Université Laval, Quebec, Quebec, Canada
| | - Elsa Rousseau
- Institute of Nutrition and Functional Foods (INAF), Faculty of Agriculture and Food Sciences, Université Laval, Quebec, Quebec, Canada
- Nutrition, Health and Society Centre (NUTRISS), INAF, Université Laval, Quebec, Quebec, Canada
- Department of Computer Science and Software Engineering, Faculty of Science and Engineering, Université Laval, Quebec, Quebec, Canada
| | - Yves Desjardins
- Institute of Nutrition and Functional Foods (INAF), Faculty of Agriculture and Food Sciences, Université Laval, Quebec, Quebec, Canada
- Nutrition, Health and Society Centre (NUTRISS), INAF, Université Laval, Quebec, Quebec, Canada
- Department of Plant Science, Faculty of Agriculture and Food Sciences, Université Laval, Quebec, Quebec, Canada
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6
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Palmer JD, Foster KR. The evolution of spectrum in antibiotics and bacteriocins. Proc Natl Acad Sci U S A 2022; 119:e2205407119. [PMID: 36099299 PMCID: PMC9499554 DOI: 10.1073/pnas.2205407119] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Accepted: 08/05/2022] [Indexed: 12/02/2022] Open
Abstract
A key property of many antibiotics is that they will kill or inhibit a diverse range of microbial species. This broad-spectrum of activity has its evolutionary roots in ecological competition, whereby bacteria and other microbes use antibiotics to suppress other strains and species. However, many bacteria also use narrow-spectrum toxins, such as bacteriocins, that principally target conspecifics. Why has such a diversity in spectrum evolved? Here, we develop an evolutionary model to understand antimicrobial spectrum. Our first model recapitulates the intuition that broad-spectrum is best, because it enables a microbe to kill a wider diversity of competitors. However, this model neglects an important property of antimicrobials: They are commonly bound, sequestered, or degraded by the cells they target. Incorporating this toxin loss reveals a major advantage to narrow-spectrum toxins: They target the strongest ecological competitor and avoid being used up on less important species. Why then would broad-spectrum toxins ever evolve? Our model predicts that broad-spectrum toxins will be favored by natural selection if a strain is highly abundant and can overpower both its key competitor and other species. We test this prediction by compiling and analyzing a database of the regulation and spectrum of toxins used in inter-bacterial competition. This analysis reveals a strong association between broad-spectrum toxins and density-dependent regulation, indicating that they are indeed used when strains are abundant. Our work provides a rationale for why bacteria commonly evolve narrow-spectrum toxins such as bacteriocins and suggests that the evolution of antibiotics proper is a signature of ecological dominance.
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Affiliation(s)
- Jacob D. Palmer
- Department of Biology, University of Oxford, Oxford, OX1 3RB, United Kingdom
- Department of Biochemistry, University of Oxford, Oxford, OX1 3QU, United Kingdom
| | - Kevin R. Foster
- Department of Biology, University of Oxford, Oxford, OX1 3RB, United Kingdom
- Department of Biochemistry, University of Oxford, Oxford, OX1 3QU, United Kingdom
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7
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Naimi S, Zirah S, Greppi A, Lacroix C, Rebuffat S, Fliss I. Impact of microcin J25 on the porcine microbiome in a continuous culture model. Front Microbiol 2022; 13:930392. [PMID: 35992668 PMCID: PMC9383034 DOI: 10.3389/fmicb.2022.930392] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Accepted: 07/06/2022] [Indexed: 11/18/2022] Open
Abstract
The increased prevalence of Salmonella spp. resistance in swine spurs the search for alternatives to antibiotics. Microcin J25 (MccJ25), a bacteriocin produced by Escherichia coli, is a potent inhibitor of several pathogenic bacteria including Salmonella enterica. In this study, we aimed to evaluate in vitro the impact of MccJ25 on the composition and the metabolic activity of the swine colonic microbiota. The PolyFermS in vitro continuous fermentation model was used here with modified Macfarlane medium to simulate the porcine proximal colon. During 35 days of fermentation, a first-stage reactor containing immobilized swine fecal microbiota fed two second-stage control and test reactors operated in parallel and used to test the effects of MccJ25 on the composition and the metabolic activity of the microbiota. Reuterin, a broad-spectrum antimicrobial compound produced by Limosilactobacillus reuteri, a lactic acid bacterium naturally present in the gastro-intestinal tract of human and animals, and the antibiotic rifampicin were tested for comparison. Sequencing of 16S rRNA was performed using the Illumina MiSeq technology to evaluate microbial diversity, and liquid chromatography coupled to mass spectrometry (LC-MS) followed by multivariate analysis was used to assess the bacteriocin/antibiotic degradation products and to monitor changes in the swine colonic microbiota metabolome. The results show that MccJ25 or reuterin treatments only induce subtle changes of both the microbial diversity and the metabolome of the swine colon microbiota, while rifampicin induces significant modification in amino acid levels. Although these findings need being validated in vivo, this study affords a first proof of concept for considering MccJ25 as a possible alternative to antibiotics for veterinary and farming applications, taking into account its pathogen-selective and potent inhibitory activity.
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Affiliation(s)
- Sabrine Naimi
- STELA Dairy Research Center, Institute of Nutrition and Functional Foods, Université Laval, Quebec City, QC, Canada
| | - Séverine Zirah
- Laboratoire Molecules of Communication and Adaptation of Microorganisms (MCAM), Sorbonne Université, Muséum national d’Histoire naturelle, Centre National de la Recherche Scientifique, Paris, France
| | - Anna Greppi
- Laboratory of Food Biotechnology, Institute of Food, Nutrition and Health, ETH Zürich, Zurich, Switzerland
| | - Christophe Lacroix
- Laboratory of Food Biotechnology, Institute of Food, Nutrition and Health, ETH Zürich, Zurich, Switzerland
| | - Sylvie Rebuffat
- Laboratoire Molecules of Communication and Adaptation of Microorganisms (MCAM), Sorbonne Université, Muséum national d’Histoire naturelle, Centre National de la Recherche Scientifique, Paris, France
| | - Ismail Fliss
- STELA Dairy Research Center, Institute of Nutrition and Functional Foods, Université Laval, Quebec City, QC, Canada
- *Correspondence: Ismail Fliss,
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Wang Y, Haqmal MA, Liang YD, Muhammad I, Zhao XO, Elken EM, Gao YH, Jia Y, He CG, Wang YM, Kong LC, Ma HX. Antibacterial activity and cytotoxicity of a novel bacteriocin isolated from Pseudomonas sp. strain 166. Microb Biotechnol 2022; 15:2337-2350. [PMID: 35849816 PMCID: PMC9437881 DOI: 10.1111/1751-7915.14096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 05/15/2022] [Accepted: 05/18/2022] [Indexed: 11/30/2022] Open
Abstract
Pseudomonas sp. strain 166 was isolated from soil samples from Changbai Mountains. A novel bacteriocin PA166 from Pseudomonas sp. 166 was purified using ammonium sulfate, dextran gel chromatography column and Q-Sepharose column chromatography successively. The molecular mass of bacteriocin PA166 was found to be 49.38 kDa by SDS-PAGE and liquid chromatography-mass spectrometry (MS)/MS. Bacteriocin PA166 showed stability at a wide range of pH (2-10), and thermal stability (40, 60, 80 and 100°C). The bacteriocin PA166 antimicrobial activity was slightly inhibited by Ca2+ , K+ and Mg2+ . The minimum bactericidal concentrations of bacteriocin PA166 against five Pasteurella multocida strains ranged from 2 to 8 μg ml-1 . Bacteriocin PA166 showed low cytotoxicity and a higher treatment index (TI = 82.51). Fluorescence spectroscopy indicated that bacteriocin PA166 destroyed the cell membrane to exert antimicrobial activity. In summary, bacteriocin PA166 had strong antibacterial activity, high TI and low toxicity, and hence could serve as a potential clinical therapeutic drug.
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Affiliation(s)
- Yu Wang
- College of Veterinary Medicine, Jilin Agricultural University, 130118, Changchun, Jilin, China
| | - M Aman Haqmal
- College of Veterinary Medicine, Jilin Agricultural University, 130118, Changchun, Jilin, China
| | - Yue-Dong Liang
- College of Veterinary Medicine, Jilin Agricultural University, 130118, Changchun, Jilin, China
| | - Inam Muhammad
- College of Veterinary Medicine, Jilin Agricultural University, 130118, Changchun, Jilin, China.,Department of Animal Sciences, Shaheed Benazir Bhutto University Sheringal Dir Upper-Pakistan, Sheringal, Pakistan
| | - Xiao-Ou Zhao
- College of Veterinary Medicine, Jilin Agricultural University, 130118, Changchun, Jilin, China
| | - Emad Mohammed Elken
- College of Veterinary Medicine, Jilin Agricultural University, 130118, Changchun, Jilin, China.,Animal Production Department, Faculty of Agriculture, Al-Azhar University, Nasr City, Cairo, 11884, Egypt
| | - Yun-Hang Gao
- College of Veterinary Medicine, Jilin Agricultural University, 130118, Changchun, Jilin, China
| | - Yu Jia
- Jilin Agricultural University, College of Life Science, Changchun, China
| | - Cheng-Guang He
- Jilin Agricultural University, College of Life Science, Changchun, China
| | - Yi-Ming Wang
- College of Veterinary Medicine, Jilin Agricultural University, 130118, Changchun, Jilin, China
| | - Ling-Cong Kong
- College of Veterinary Medicine, Jilin Agricultural University, 130118, Changchun, Jilin, China.,The Key Laboratory of New Veterinary Drug Research and Development of Jilin Province, Jilin Agricultural University, Xincheng Street No. 2888, Changchun, 130118, China
| | - Hong-Xia Ma
- Jilin Agricultural University, College of Life Science, Changchun, China.,The Key Laboratory of New Veterinary Drug Research and Development of Jilin Province, Jilin Agricultural University, Xincheng Street No. 2888, Changchun, 130118, China.,The Engineering Research Center of Bioreactor and Drug Development, Ministry of Education, Jilin Agricultural University, Changchun, China
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9
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Gościniak A, Eder P, Walkowiak J, Cielecka-Piontek J. Artificial Gastrointestinal Models for Nutraceuticals Research—Achievements and Challenges: A Practical Review. Nutrients 2022; 14:nu14132560. [PMID: 35807741 PMCID: PMC9268564 DOI: 10.3390/nu14132560] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Revised: 06/09/2022] [Accepted: 06/16/2022] [Indexed: 11/16/2022] Open
Abstract
Imitating the human digestive system as closely as possible is the goal of modern science. The main reason is to find an alternative to expensive, risky and time-consuming clinical trials. Of particular interest are models that simulate the gut microbiome. This paper aims to characterize the human gut microbiome, highlight the importance of its contribution to disease, and present in vitro models that allow studying the microbiome outside the human body but under near-natural conditions. A review of studies using models SHIME, SIMGI, TIM-2, ECSIM, EnteroMix, and PolyfermS will provide an overview of the options available and the choice of a model that suits the researcher’s expectations with advantages and disadvantages.
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Affiliation(s)
- Anna Gościniak
- Department of Pharmacognosy, Poznan University of Medical Sciences, Rokietnicka 3, 60-806 Poznan, Poland;
| | - Piotr Eder
- Department of Gastroenterology, Dietetics and Internal Diseases, Poznan University of Medical Sciences, Przybyszewskiego 49, 60-355 Poznan, Poland;
| | - Jarosław Walkowiak
- Department of Pediatric Gastroenterology and Metabolic Diseases, Poznan University of Medical Sciences, Szpitalna 27/33, 60-572 Poznan, Poland;
| | - Judyta Cielecka-Piontek
- Department of Pharmacognosy, Poznan University of Medical Sciences, Rokietnicka 3, 60-806 Poznan, Poland;
- Correspondence:
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Grzymajlo K. The Game for Three: Salmonella–Host–Microbiota Interaction Models. Front Microbiol 2022; 13:854112. [PMID: 35516427 PMCID: PMC9062650 DOI: 10.3389/fmicb.2022.854112] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Accepted: 03/11/2022] [Indexed: 11/16/2022] Open
Abstract
Colonization of the gastrointestinal (GI) tract by enteric pathogens occurs in a context strongly determined by host-specific gut microbiota, which can significantly affect the outcome of infection. The complex gameplay between the trillions of microbes that inhabit the GI tract, the host, and the infecting pathogen defines a specific triangle of interaction; therefore, a complete model of infection should consider all of these elements. Many different infection models have been developed to explain the complexity of these interactions. This review sheds light on current knowledge, along with the strengths and limitations of in vitro and in vivo models utilized in the study of Salmonella–host–microbiome interactions. These models range from the simplest experiment simulating environmental conditions using dedicated growth media through in vitro interaction with cell lines and 3-D organoid structure, and sophisticated “gut on a chip” systems, ending in various animal models. Finally, the challenges facing this field of research and the important future directions are outlined.
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Parker JK, Davies BW. Microcins reveal natural mechanisms of bacterial manipulation to inform therapeutic development. MICROBIOLOGY (READING, ENGLAND) 2022; 168:001175. [PMID: 35438625 PMCID: PMC10233263 DOI: 10.1099/mic.0.001175] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Accepted: 03/17/2022] [Indexed: 12/20/2022]
Abstract
Microcins are an understudied and poorly characterized class of antimicrobial peptides. Despite the existence of only 15 examples, all identified from the Enterobacteriaceae, microcins display diversity in sequence, structure, target cell uptake, cytotoxic mechanism of action and target specificity. Collectively, these features describe some of the unique means nature has contrived for molecules to cross the 'impermeable' barrier of the Gram-negative bacterial outer membrane and inflict cytotoxic effects. Microcins appear to be widely dispersed among different species and in different environments, where they function in regulating microbial communities in diverse ways, including through competition. Growing evidence suggests that microcins may be adapted for therapeutic uses such as antimicrobial drugs, microbiome modulators or facilitators of peptide uptake into cells. Advancing our biological, ecological and biochemical understanding of the roles of microcins in bacterial interactions, and learning how to regulate and modify microcin activity, is essential to enable such therapeutic applications.
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Affiliation(s)
| | - Bryan William Davies
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, Texas, USA
- John Ring LaMontagne Center for Infectious Diseases, The University of Texas at Austin, Austin, Texas, USA
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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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Rebuffat S. Ribosomally synthesized peptides, foreground players in microbial interactions: recent developments and unanswered questions. Nat Prod Rep 2021; 39:273-310. [PMID: 34755755 DOI: 10.1039/d1np00052g] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
It is currently well established that multicellular organisms live in tight association with complex communities of microorganisms including a large number of bacteria. These are immersed in complex interaction networks reflecting the relationships established between them and with host organisms; yet, little is known about the molecules and mechanisms involved in these mutual interactions. Ribosomally synthesized peptides, among which bacterial antimicrobial peptides called bacteriocins and microcins have been identified as contributing to host-microbe interplays, are either unmodified or post-translationally modified peptides. This review will unveil current knowledge on these ribosomal peptide-based natural products, their interplay with the host immune system, and their roles in microbial interactions and symbioses. It will include their major structural characteristics and post-translational modifications, the main rules of their maturation pathways, and the principal ecological functions they ensure (communication, signalization, competition), especially in symbiosis, taking select examples in various organisms. Finally, we address unanswered questions and provide a framework for deciphering big issues inspiring future directions in the field.
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Affiliation(s)
- Sylvie Rebuffat
- Laboratory Molecules of Communication and Adaptation of Microorganisms (MCAM, UMR 7245 CNRS-MNHN), National Museum of Natural History (MNHN), National Centre of Scientific Research (CNRS), CP 54, 57 rue Cuvier 75005, Paris, France.
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Telhig S, Ben Said L, Zirah S, Fliss I, Rebuffat S. Bacteriocins to Thwart Bacterial Resistance in Gram Negative Bacteria. Front Microbiol 2020; 11:586433. [PMID: 33240239 PMCID: PMC7680869 DOI: 10.3389/fmicb.2020.586433] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Accepted: 10/16/2020] [Indexed: 12/16/2022] Open
Abstract
An overuse of antibiotics both in human and animal health and as growth promoters in farming practices has increased the prevalence of antibiotic resistance in bacteria. Antibiotic resistant and multi-resistant bacteria are now considered a major and increasing threat by national health agencies, making the need for novel strategies to fight bugs and super bugs a first priority. In particular, Gram-negative bacteria are responsible for a high proportion of nosocomial infections attributable for a large part to Enterobacteriaceae, such as pathogenic Escherichia coli, Klebsiella pneumoniae, and Pseudomonas aeruginosa. To cope with their highly competitive environments, bacteria have evolved various adaptive strategies, among which the production of narrow spectrum antimicrobial peptides called bacteriocins and specifically microcins in Gram-negative bacteria. They are produced as precursor peptides that further undergo proteolytic cleavage and in many cases more or less complex posttranslational modifications, which contribute to improve their stability and efficiency. Many have a high stability in the gastrointestinal tract where they can target a single pathogen whilst only slightly perturbing the gut microbiota. Several microcins and antibiotics can bind to similar bacterial receptors and use similar pathways to cross the double-membrane of Gram-negative bacteria and reach their intracellular targets, which they also can share. Consequently, bacteria may use common mechanisms of resistance against microcins and antibiotics. This review describes both unmodified and modified microcins [lasso peptides, siderophore peptides, nucleotide peptides, linear azole(in)e-containing peptides], highlighting their potential as weapons to thwart bacterial resistance in Gram-negative pathogens and discusses the possibility of cross-resistance and co-resistance occurrence between antibiotics and microcins in Gram-negative bacteria.
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Affiliation(s)
- Soufiane Telhig
- Institute of Nutrition and Functional Foods, Université Laval, Québec, QC, Canada
- Laboratory Molecules of Communication and Adaptation of Microorganisms, Muséum National d’Histoire Naturelle, Centre National de la Recherche Scientifique, Paris, France
| | - Laila Ben Said
- Institute of Nutrition and Functional Foods, Université Laval, Québec, QC, Canada
| | - Séverine Zirah
- Laboratory Molecules of Communication and Adaptation of Microorganisms, Muséum National d’Histoire Naturelle, Centre National de la Recherche Scientifique, Paris, France
| | - Ismail Fliss
- Institute of Nutrition and Functional Foods, Université Laval, Québec, QC, Canada
| | - Sylvie Rebuffat
- Laboratory Molecules of Communication and Adaptation of Microorganisms, Muséum National d’Histoire Naturelle, Centre National de la Recherche Scientifique, Paris, France
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