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Ogunleye SC, Islam S, Chowdhury QMMK, Ozdemir O, Lawrence ML, Abdelhamed H. Catabolite control protein C contributes to virulence and hydrogen peroxide-induced oxidative stress responses in Listeria monocytogenes. Front Microbiol 2024; 15:1403694. [PMID: 38881664 PMCID: PMC11176438 DOI: 10.3389/fmicb.2024.1403694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2024] [Accepted: 05/07/2024] [Indexed: 06/18/2024] Open
Abstract
Listeria monocytogenes causes listeriosis, an infectious and potentially fatal disease of animals and humans. A diverse network of transcriptional regulators, including LysR-type catabolite control protein C (CcpC), is critical for the survival of L. monocytogenes and its ability to transition into the host environment. In this study, we explored the physiological and genetic consequences of deleting ccpC and the effects of such deletion on the ability of L. monocytogenes to cause disease. We found that ccpC deletion did not impact hemolytic activity, whereas it resulted in significant reductions in phospholipase activities. Western blotting revealed that the ΔccpC strain produced significantly reduced levels of the cholesterol-dependent cytolysin LLO relative to the wildtype F2365 strain. However, the ΔccpC mutant displayed no significant intracellular growth defect in macrophages. Furthermore, ΔccpC strain exhibited reduction in plaque numbers in fibroblasts compared to F2365, but plaque size was not significantly affected by ccpC deletion. In a murine model system, the ΔccpC strain exhibited a significantly reduced bacterial burden in the liver and spleen compared to the wildtype F2365 strain. Interestingly, the deletion of this gene also enhanced the survival of L. monocytogenes under conditions of H2O2-induced oxidative stress. Transcriptomic analyses performed under H2O2-induced oxidative stress conditions revealed that DNA repair, cellular responses to DNA damage and stress, metalloregulatory proteins, and genes involved in the biosynthesis of peptidoglycan and teichoic acids were significantly induced in the ccpC deletion strain relative to F2365. In contrast, genes encoding internalin, 1-phosphatidylinositol phosphodiesterase, and genes associated with sugar-specific phosphotransferase system components, porphyrin, branched-chain amino acids, and pentose phosphate pathway were significantly downregulated in the ccpC deletion strain relative to F2365. This finding highlights CcpC as a key factor that regulates L. monocytogenes physiology and responses to oxidative stress by controlling the expression of important metabolic pathways.
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Affiliation(s)
- Seto C Ogunleye
- Department of Comparative Biomedical Sciences, College of Veterinary Medicine, Mississippi State University, Mississippi, MS, United States
| | - Shamima Islam
- Department of Comparative Biomedical Sciences, College of Veterinary Medicine, Mississippi State University, Mississippi, MS, United States
| | - Q M Monzur Kader Chowdhury
- Department of Comparative Biomedical Sciences, College of Veterinary Medicine, Mississippi State University, Mississippi, MS, United States
| | - Ozan Ozdemir
- Department of Comparative Biomedical Sciences, College of Veterinary Medicine, Mississippi State University, Mississippi, MS, United States
| | - Mark L Lawrence
- Department of Comparative Biomedical Sciences, College of Veterinary Medicine, Mississippi State University, Mississippi, MS, United States
| | - Hossam Abdelhamed
- Department of Comparative Biomedical Sciences, College of Veterinary Medicine, Mississippi State University, Mississippi, MS, United States
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Leser T, Baker A. Molecular Mechanisms of Lacticaseibacillus rhamnosus, LGG ® Probiotic Function. Microorganisms 2024; 12:794. [PMID: 38674738 PMCID: PMC11051730 DOI: 10.3390/microorganisms12040794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Revised: 04/10/2024] [Accepted: 04/12/2024] [Indexed: 04/28/2024] Open
Abstract
To advance probiotic research, a comprehensive understanding of bacterial interactions with human physiology at the molecular and cellular levels is fundamental. Lacticaseibacillus rhamnosus LGG® is a bacterial strain that has long been recognized for its beneficial effects on human health. Probiotic effector molecules derived from LGG®, including secreted proteins, surface-anchored proteins, polysaccharides, and lipoteichoic acids, which interact with host physiological processes have been identified. In vitro and animal studies have revealed that specific LGG® effector molecules stimulate epithelial cell survival, preserve intestinal barrier integrity, reduce oxidative stress, mitigate excessive mucosal inflammation, enhance IgA secretion, and provide long-term protection through epigenetic imprinting. Pili on the cell surface of LGG® promote adhesion to the intestinal mucosa and ensure close contact to host cells. Extracellular vesicles produced by LGG® recapitulate many of these effects through their cargo of effector molecules. Collectively, the effector molecules of LGG® exert a significant influence on both the gut mucosa and immune system, which promotes intestinal homeostasis and immune tolerance.
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Affiliation(s)
- Thomas Leser
- Future Labs, Human Health Biosolutions, Novonesis, Kogle Alle 6, 2970 Hoersholm, Denmark;
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Zhang Z, Zhang HL, Yang DH, Hao Q, Yang HW, Meng DL, Meindert de Vos W, Guan LL, Liu SB, Teame T, Gao CC, Ran C, Yang YL, Yao YY, Ding QW, Zhou ZG. Lactobacillus rhamnosus GG triggers intestinal epithelium injury in zebrafish revealing host dependent beneficial effects. IMETA 2024; 3:e181. [PMID: 38882496 PMCID: PMC11170971 DOI: 10.1002/imt2.181] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 02/22/2024] [Accepted: 02/26/2024] [Indexed: 06/18/2024]
Abstract
Lactobacillus rhamnosus GG (LGG), the well-characterized human-derived probiotic strain, possesses excellent properties in the maintenance of intestinal homeostasis, immunoregulation and defense against gastrointestinal pathogens in mammals. Here, we demonstrate that the SpaC pilin of LGG causes intestinal epithelium injury by inducing cell pyroptosis and gut microbial dysbiosis in zebrafish. Dietary SpaC activates Caspase-3-GSDMEa pathways in the intestinal epithelium, promotes intestinal pyroptosis and increases lipopolysaccharide (LPS)-producing gut microbes in zebrafish. The increased LPS subsequently activates Gaspy2-GSDMEb pyroptosis pathway. Further analysis reveals the Caspase-3-GSDMEa pyroptosis is initiated by the species-specific recognition of SpaC by TLR4ba, which accounts for the species-specificity of the SpaC-inducing intestinal pyroptosis in zebrafish. The observed pyroptosis-driven gut injury and microbial dysbiosis by LGG in zebrafish suggest that host-specific beneficial/harmful mechanisms are critical safety issues when applying probiotics derived from other host species and need more attention.
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Affiliation(s)
- Zhen Zhang
- Key Laboratory for Feed Biotechnology of the Ministry of Agriculture and Rural Affairs, Institute of Feed Research Chinese Academy of Agricultural Sciences Beijing China
- Faculty of Land and Food Systems The University of British Columbia Vancouver Canada
| | - Hong-Ling Zhang
- China-Norway Joint Lab on Fish Gut Microbiota, Institute of Feed Research Chinese Academy of Agricultural Sciences Beijing China
| | - Da-Hai Yang
- State Key Laboratory of Bioreactor Engineering East China University of Science and Technology Shanghai China
| | - Qiang Hao
- China-Norway Joint Lab on Fish Gut Microbiota, Institute of Feed Research Chinese Academy of Agricultural Sciences Beijing China
| | - Hong-Wei Yang
- China-Norway Joint Lab on Fish Gut Microbiota, Institute of Feed Research Chinese Academy of Agricultural Sciences Beijing China
| | - De-Long Meng
- China-Norway Joint Lab on Fish Gut Microbiota, Institute of Feed Research Chinese Academy of Agricultural Sciences Beijing China
| | - Willem Meindert de Vos
- Laboratory of Microbiology Wageningen University and Research Wageningen Netherlands
- Human Microbiome Research Program, Faculty of Medicine University of Helsinki Helsinki Finland
| | - Le-Luo Guan
- Faculty of Land and Food Systems The University of British Columbia Vancouver Canada
| | - Shu-Bin Liu
- China-Norway Joint Lab on Fish Gut Microbiota, Institute of Feed Research Chinese Academy of Agricultural Sciences Beijing China
| | - Tsegay Teame
- China-Norway Joint Lab on Fish Gut Microbiota, Institute of Feed Research Chinese Academy of Agricultural Sciences Beijing China
- Tigray Agricultural Research Institute Mekelle Ethiopia
| | - Chen-Chen Gao
- China-Norway Joint Lab on Fish Gut Microbiota, Institute of Feed Research Chinese Academy of Agricultural Sciences Beijing China
| | - Chao Ran
- Key Laboratory for Feed Biotechnology of the Ministry of Agriculture and Rural Affairs, Institute of Feed Research Chinese Academy of Agricultural Sciences Beijing China
| | - Ya-Lin Yang
- Key Laboratory for Feed Biotechnology of the Ministry of Agriculture and Rural Affairs, Institute of Feed Research Chinese Academy of Agricultural Sciences Beijing China
| | - Yuan-Yuan Yao
- Key Laboratory for Feed Biotechnology of the Ministry of Agriculture and Rural Affairs, Institute of Feed Research Chinese Academy of Agricultural Sciences Beijing China
| | - Qian-Wen Ding
- Key Laboratory for Feed Biotechnology of the Ministry of Agriculture and Rural Affairs, Institute of Feed Research Chinese Academy of Agricultural Sciences Beijing China
| | - Zhi-Gang Zhou
- China-Norway Joint Lab on Fish Gut Microbiota, Institute of Feed Research Chinese Academy of Agricultural Sciences Beijing China
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Yarlagadda T, Zhu Y, Snape N, Carey A, Bryan E, Maresco-Pennisi D, Coleman A, Cervin A, Spann K. Lactobacillus rhamnosus dampens cytokine and chemokine secretion from primary human nasal epithelial cells infected with rhinovirus. J Appl Microbiol 2024; 135:lxae018. [PMID: 38268489 DOI: 10.1093/jambio/lxae018] [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: 12/03/2023] [Revised: 01/15/2024] [Accepted: 01/22/2024] [Indexed: 01/26/2024]
Abstract
AIMS To investigate the effect of Lactobacillus rhamnosus on viral replication and cellular response to human rhinovirus (HRV) infection, including the secretion of antiviral and inflammatory mediators from well-differentiated nasal epithelial cells (WD-NECs). METHODS AND RESULTS The WD-NECs from healthy adult donors (N = 6) were cultured in vitro, exposed to different strains of L. rhamnosus (D3189, D3160, or LB21), and infected with HRV (RV-A16) after 24 h. Survival and adherence capacity of L. rhamnosus in a NEC environment were confirmed using CFSE-labelled isolates, immunofluorescent staining, and confocal microscopy. Shed virus and viral replication were quantified using TCID50 assays and RT-qPCR, respectively. Cytotoxicity was measured by lactate dehydrogenase (LDH) activity. Pro-inflammatory mediators were measured by multiplex immunoassay, and interferon (IFN)-λ1/3 was measured using a standard ELISA kit. Lactobacillus rhamnosus was able to adhere to and colonize WD-NECs prior to the RV-A16 infection. Lactobacillus rhamnosus did not affect shed RV-A16, viral replication, RV-A16-induced IFN-λ1/3 production, or LDH release. Pre-exposure to L. rhamnosus, particularly D3189, reduced the secretion of RV-A16-induced pro-inflammatory mediators by WD-NECs. CONCLUSIONS These findings demonstrate that L. rhamnosus differentially modulates RV-A16-induced innate inflammatory immune responses in primary NECs from healthy adults.
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Affiliation(s)
- Tejasri Yarlagadda
- Centre for Immunology and Infection Control, Queensland University of Technology, Brisbane 4000, Australia
| | - Yanshan Zhu
- School of Chemistry and Molecular Biosciences, University of Queensland, St Lucia 4072, Australia
| | - Natale Snape
- University of Queensland Frazer Institute, Woolloongabba 4102, Australia
| | - Alison Carey
- Centre for Immunology and Infection Control, Queensland University of Technology, Brisbane 4000, Australia
| | - Emily Bryan
- Centre for Immunology and Infection Control, Queensland University of Technology, Brisbane 4000, Australia
- Faculty of Medicine, University of Queensland Centre for Clinical Research, Herston 4006, Australia
| | - Diane Maresco-Pennisi
- Faculty of Medicine, University of Queensland Centre for Clinical Research, Herston 4006, Australia
| | - Andrea Coleman
- Faculty of Medicine, University of Queensland Centre for Clinical Research, Herston 4006, Australia
| | - Anders Cervin
- Faculty of Medicine, University of Queensland Centre for Clinical Research, Herston 4006, Australia
| | - Kirsten Spann
- Centre for Immunology and Infection Control, Queensland University of Technology, Brisbane 4000, Australia
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Sørensen HM, Cunningham D, Balakrishnan R, Maye S, MacLeod G, Brabazon D, Loscher C, Freeland B. Steps toward a digital twin for functional food production with increased health benefits. Curr Res Food Sci 2023; 7:100593. [PMID: 37790857 PMCID: PMC10543970 DOI: 10.1016/j.crfs.2023.100593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 09/13/2023] [Accepted: 09/13/2023] [Indexed: 10/05/2023] Open
Abstract
Lactobacillus rhamnosus (L. rhamnosus) is a commensal bacterium with health-promoting properties and with a wide range of applications within the food industry. To improve and optimize the control of L. rhamnosus biomass production in batch and fed-batch bioprocesses, this study proposes the application of artificial neural network (ANN) modelling to improve process control and monitoring, with potential future implementation as a basis for a digital twin. Three ANNs were developed using historical data from ten bioprocesses. These ANNs were designed to predict the biomass in batch bioprocesses with different media compositions, predict biomass in fed-batch bioprocesses, and predict the growth rate in fed-batch bioprocesses. The immunomodulatory effect of the L. rhamnosus samples was examined and found to elicit an anti-inflammatory response as evidenced by the inhibition of IL-6 and TNF-α secretion. Overall, the findings of this study reinforce the potential of ANN modelling for bioprocess optimization aimed at improved control for maximising the volumetric productivity of L. rhamnosus as an immunomodulatory agent with applications in the functional food industry.
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Affiliation(s)
- Helena Mylise Sørensen
- School of Biotechnology, Dublin City University, D9 Dublin, Ireland
- I-Form, Advanced Manufacturing Research Centre, Dublin City University, D9 Dublin, Ireland
| | - David Cunningham
- School of Biotechnology, Dublin City University, D9 Dublin, Ireland
| | | | - Susan Maye
- Dairygold Co-Operative Society Limited, Clonmel Road, Co. Cork, P67 DD36, Mitchelstown, Ireland
| | - George MacLeod
- Dairygold Co-Operative Society Limited, Clonmel Road, Co. Cork, P67 DD36, Mitchelstown, Ireland
| | - Dermot Brabazon
- I-Form, Advanced Manufacturing Research Centre, Dublin City University, D9 Dublin, Ireland
| | | | - Brian Freeland
- School of Biotechnology, Dublin City University, D9 Dublin, Ireland
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6
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Lee CG, Cha KH, Kim GC, Im SH, Kwon HK. Exploring probiotic effector molecules and their mode of action in gut-immune interactions. FEMS Microbiol Rev 2023; 47:fuad046. [PMID: 37541953 DOI: 10.1093/femsre/fuad046] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 07/17/2023] [Accepted: 08/03/2023] [Indexed: 08/06/2023] Open
Abstract
Probiotics, live microorganisms that confer health benefits when consumed in adequate amounts, have gained significant attention for their potential therapeutic applications. The beneficial effects of probiotics are believed to stem from their ability to enhance intestinal barrier function, inhibit pathogens, increase beneficial gut microbes, and modulate immune responses. However, clinical studies investigating the effectiveness of probiotics have yielded conflicting results, potentially due to the wide variety of probiotic species and strains used, the challenges in controlling the desired number of live microorganisms, and the complex interactions between bioactive substances within probiotics. Bacterial cell wall components, known as effector molecules, play a crucial role in mediating the interaction between probiotics and host receptors, leading to the activation of signaling pathways that contribute to the health-promoting effects. Previous reviews have extensively covered different probiotic effector molecules, highlighting their impact on immune homeostasis. Understanding how each probiotic component modulates immune activity at the molecular level may enable the prediction of immunological outcomes in future clinical studies. In this review, we present a comprehensive overview of the structural and immunological features of probiotic effector molecules, focusing primarily on Lactobacillus and Bifidobacterium. We also discuss current gaps and limitations in the field and propose directions for future research to enhance our understanding of probiotic-mediated immunomodulation.
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Affiliation(s)
- Choong-Gu Lee
- Natural Product Informatics Research Center, Korea Institute of Science and Technology, 679, Saimdang-ro, Gangneung 25451, Korea
- Division of Bio-Medical Science and Technology, KIST School, University of Science and Technology, 679, Saimdang-ro, Seoul 02792, Korea
- Department of Convergence Medicine, Wonju College of Medicine, Yonsei University, 20, Ilsan-ro, Wonju 26493, Korea
| | - Kwang Hyun Cha
- Natural Product Informatics Research Center, Korea Institute of Science and Technology, 679, Saimdang-ro, Gangneung 25451, Korea
- Division of Bio-Medical Science and Technology, KIST School, University of Science and Technology, 679, Saimdang-ro, Seoul 02792, Korea
- Department of Convergence Medicine, Wonju College of Medicine, Yonsei University, 20, Ilsan-ro, Wonju 26493, Korea
| | - Gi-Cheon Kim
- Department of Microbiology and Immunology, Institute for Immunology and Immunological Diseases, and Brain Korea 21 PLUS Project for Medical Sciences, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seoul 03722, Korea
| | - Sin-Hyeog Im
- Department of Life Sciences, Pohang University of Science and Technology, 77, Cheongam-ro, Pohang 37673, Korea
- Institute for Convergence Research and Education, Yonsei University, 50-1 Yonsei-ro, Seoul 03722, Korea
- ImmunoBiome Inc, Bio Open Innovation Center, 77, Cheongam-ro, Pohang 37673 , Korea
| | - Ho-Keun Kwon
- Department of Microbiology and Immunology, Institute for Immunology and Immunological Diseases, and Brain Korea 21 PLUS Project for Medical Sciences, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seoul 03722, Korea
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7
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Zhao Q, Wang Y, Zhu Z, Zhao Q, Zhu L, Jiang L. Efficient reduction of β-lactoglobulin allergenicity in milk using Clostridium tyrobutyricum Z816. FOOD SCIENCE AND HUMAN WELLNESS 2023. [DOI: 10.1016/j.fshw.2022.09.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Pal R, Athamneh AI, Deshpande R, Ramirez JAR, Adu KT, Muthuirulan P, Pawar S, Biazzo M, Apidianakis Y, Sundekilde UK, de la Fuente-Nunez C, Martens MG, Tegos GP, Seleem MN. Probiotics: insights and new opportunities for Clostridioides difficile intervention. Crit Rev Microbiol 2023; 49:414-434. [PMID: 35574602 PMCID: PMC9743071 DOI: 10.1080/1040841x.2022.2072705] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 04/17/2022] [Accepted: 04/28/2022] [Indexed: 02/08/2023]
Abstract
Clostridioides difficile infection (CDI) is a life-threatening disease caused by the Gram-positive, opportunistic intestinal pathogen C. difficile. Despite the availability of antimicrobial drugs to treat CDI, such as vancomycin, metronidazole, and fidaxomicin, recurrence of infection remains a significant clinical challenge. The use of live commensal microorganisms, or probiotics, is one of the most investigated non-antibiotic therapeutic options to balance gastrointestinal (GI) microbiota and subsequently tackle dysbiosis. In this review, we will discuss major commensal probiotic strains that have the potential to prevent and/or treat CDI and its recurrence, reassess the efficacy of probiotics supplementation as a CDI intervention, delve into lessons learned from probiotic modulation of the immune system, explore avenues like genome-scale metabolic network reconstructions, genome sequencing, and multi-omics to identify novel strains and understand their functionality, and discuss the current regulatory framework, challenges, and future directions.
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Affiliation(s)
- Rusha Pal
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA, 24061, USA
| | - Ahmad I.M. Athamneh
- Department of Comparative Pathobiology, College of Veterinary Medicine, Purdue University, West Lafayette, IN 47907, USA
| | | | - Jose A. R Ramirez
- ProbioWorld Consulting Group, James Cook University, 4811, Queensland, Australia
| | - Kayode T. Adu
- ProbioWorld Consulting Group, James Cook University, 4811, Queensland, Australia
- Cann Group, Walter and Eliza Hall Institute, La Trobe University, Victoria 3083, Australia
| | | | - Shrikant Pawar
- The Anlyan Center Yale Center for Genomic Analysis, Yale School of Medicine, New Haven CT USA
| | - Manuele Biazzo
- The Bioarte Ltd Laboratories at Life Science Park, San Gwann, Malta
| | | | | | - Cesar de la Fuente-Nunez
- Machine Biology Group, Departments of Psychiatry and Microbiology, Institute for Biomedical Informatics, Institute for Translational Medicine and Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
- Departments of Bioengineering and Chemical and Biomolecular Engineering, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
- Penn Institute for Computational Science, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Mark G. Martens
- Reading Hospital, Tower Health, West Reading, PA 19611, USA
- Drexel University College of Medicine, Philadelphia, PA, 19129, USA
| | - George P. Tegos
- Drexel University College of Medicine, Philadelphia, PA, 19129, USA
| | - Mohamed N. Seleem
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA, 24061, USA
- Center for Emerging, Zoonotic and Arthropod-borne Pathogens, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA
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Saravanan P, R P, Balachander N, K KRS, S S, S R. Anti-inflammatory and wound healing properties of lactic acid bacteria and its peptides. Folia Microbiol (Praha) 2023; 68:337-353. [PMID: 36780113 PMCID: PMC9924211 DOI: 10.1007/s12223-022-01030-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Accepted: 12/29/2022] [Indexed: 02/14/2023]
Abstract
Recent studies manifest an increase of inflammatory diseases at an alarming rate due to gut microbiota dysbiosis, genetic and other environmental factors. Lactic acid bacteria (LAB) are known for their antimicrobial properties and their extensive applications in food and pharmaceutical industries. Cyclic peptides are receiving increased attention due to their remarkable stability to withstand variations in temperature and pH. LAB produces anti-inflammatory that can inhibit lipopolysaccharide-induced production of proinflammatory cytokines in macrophages. The structural backbones of cyclic peptides offer a promising approach for the treatment of chronic inflammatory conditions. The current review aims to present the overview of anti-inflammatory and wound healing properties of LAB-derived cyclic peptides.
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Affiliation(s)
- Parikhshith Saravanan
- Department of Biotechnology, School of Bioengineering, Faculty of Engineering & Technology, SRM Institute of Science and Technology, Kattankulathur, Chennai, 603 203, India
| | - Pooja R
- Department of Biotechnology, School of Bioengineering, Faculty of Engineering & Technology, SRM Institute of Science and Technology, Kattankulathur, Chennai, 603 203, India
| | - Nanditaa Balachander
- Department of Biotechnology, School of Bioengineering, Faculty of Engineering & Technology, SRM Institute of Science and Technology, Kattankulathur, Chennai, 603 203, India
| | - Kesav Ram Singh K
- Department of Biotechnology, School of Bioengineering, Faculty of Engineering & Technology, SRM Institute of Science and Technology, Kattankulathur, Chennai, 603 203, India
| | - Silpa S
- Department of Biotechnology, School of Bioengineering, Faculty of Engineering & Technology, SRM Institute of Science and Technology, Kattankulathur, Chennai, 603 203, India
| | - Rupachandra S
- Department of Biotechnology, School of Bioengineering, Faculty of Engineering & Technology, SRM Institute of Science and Technology, Kattankulathur, Chennai, 603 203, India.
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10
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In Silico Study of Cell Surface Structures of Parabacteroides distasonis Involved in Its Maintenance within the Gut Microbiota. Int J Mol Sci 2022; 23:ijms23169411. [PMID: 36012685 PMCID: PMC9409006 DOI: 10.3390/ijms23169411] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 08/11/2022] [Accepted: 08/12/2022] [Indexed: 11/16/2022] Open
Abstract
The health-promoting Parabacteroides distasonis, which is part of the core microbiome, has recently received a lot of attention, showing beneficial properties for its host and potential as a new biotherapeutic product. However, no study has yet investigated the cell surface molecules and structures of P. distasonis that allow its maintenance within the gut microbiota. Moreover, although P. distasonis is strongly recognized as an intestinal commensal species with benefits for its host, several works displayed controversial results, showing it as an opportunistic pathogen. In this study, we reported gene clusters potentially involved in the synthesis of capsule, fimbriae-like and pili-like cell surface structures in 26 P. distasonis genomes and applied the new RfbA-typing classification in order to better understand and characterize the beneficial/pathogenic behavior related to P. distasonis strains. Two different types of fimbriae, three different types of pilus and up to fourteen capsular polysaccharide loci were identified over the 26 genomes studied. Moreover, the addition of data to the rfbA-type classification modified the outcome by rearranging rfbA genes and adding a fifth group to the classification. In conclusion, the strain variability in terms of external proteinaceous structure could explain the inter-strain differences previously observed of P. distasonis adhesion capacities and its potential pathogenicity, but no specific structure related to P. distasonis beneficial or detrimental activity was identified.
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Factors Affecting Spontaneous Endocytosis and Survival of Probiotic Lactobacilli in Human Intestinal Epithelial Cells. Microorganisms 2022; 10:microorganisms10061142. [PMID: 35744660 PMCID: PMC9230732 DOI: 10.3390/microorganisms10061142] [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: 04/28/2022] [Revised: 05/25/2022] [Accepted: 05/30/2022] [Indexed: 11/29/2022] Open
Abstract
Mutualistic bacteria have different forms of interaction with the host. In contrast to the invasion of pathogenic bacteria, naturally occurring internalization of commensal bacteria has not been studied in depth. Three in vitro methods, gentamicin protection, flow cytometry and confocal laser scanning microscopy, have been implemented to accurately assess the internalization of two lactobacillus strains—Lacticaseibacillus paracasei BL23 and Lacticaseibacillus rhamnosus GG—in Caco-2 and T84 intestinal epithelial cells (IECs) under a variety of physiological conditions and with specific inhibitors. First and most interesting, internalization occurred at a variable rate that depends on the bacterial strain and IEC line, and the most efficient was BL23 internalization by T84 and, second, efficient internalization required active IEC proliferation, as it improved naturally at the early confluence stages and by stimulation with epidermal growth factor (EGF). IFN-γ is bound to innate immune responses and autolysis; this cytokine had a significant effect on internalization, as shown by flow cytometry, but increased internalization was not perceived in all conditions, possibly because it was also stimulating autolysis and, as a consequence, the viability of bacteria after uptake could be affected. Bacterial uptake required actin polymerization, as shown by cytochalasin D inhibition, and it was partially bound to clathrin and caveolin dependent endocytosis. It also showed partial inhibition by ML7 indicating the involvement of cholesterol lipid rafts and myosin light chain kinase (MLCK) activation, at least in the LGG uptake by Caco-2. Most interestingly, bacteria remained viable inside the IEC for as long as 72 h without damaging the epithelial cells, and paracellular transcytosis was observed. These results stressed the fact that internalization of commensal and mutualistic bacteria is a natural, nonpathogenic process that may be relevant in crosstalk processes between the intestinal populations and the host, and future studies could determine its connection to processes such as commensal tolerance, resilience of microbial populations or transorganic bacterial migration.
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Lacticaseibacillus rhamnosus: A Suitable Candidate for the Construction of Novel Bioengineered Probiotic Strains for Targeted Pathogen Control. Foods 2022; 11:foods11060785. [PMID: 35327208 PMCID: PMC8947445 DOI: 10.3390/foods11060785] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 03/03/2022] [Accepted: 03/07/2022] [Indexed: 12/12/2022] Open
Abstract
Probiotics, with their associated beneficial effects, have gained popularity for the control of foodborne pathogens. Various sources are explored with the intent to isolate novel robust probiotic strains with a broad range of health benefits due to, among other mechanisms, the production of an array of antimicrobial compounds. One of the shortcomings of these wild-type probiotics is their non-specificity. A pursuit to circumvent this limitation led to the advent of the field of pathobiotechnology. In this discipline, specific pathogen gene(s) are cloned and expressed into a given probiotic to yield a novel pathogen-specific strain. The resultant recombinant probiotic strain will exhibit enhanced species-specific inhibition of the pathogen and its associated infection. Such probiotics are also used as vehicles to deliver therapeutic agents. As fascinating as this approach is, coupled with the availability of numerous probiotics, it brings a challenge with regard to deciding which of the probiotics to use. Nonetheless, it is indisputable that an ideal candidate must fulfil the probiotic selection criteria. This review aims to show how Lacticaseibacillus rhamnosus, a clinically best-studied probiotic, presents as such a candidate. The objective is to spark researchers’ interest to conduct further probiotic-engineering studies using L. rhamnosus, with prospects for the successful development of novel probiotic strains with enhanced beneficial attributes.
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13
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Probiotic Molecules That Inhibit Inflammatory Diseases. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12031147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Consumption of probiotics for health purposes has increased vastly in the past few decades, and yet the scientific evidence to support health benefits from probiotics is only beginning to emerge. As more probiotics are studied, we are beginning to understand the mechanisms of action by which they benefit human health, as well as to identify the bacterial molecules responsible for these benefits. A new era of therapeutics is on the horizon in which purified molecules from probiotics will be used to prevent and treat diseases. In this review, we summarize the active molecules from probiotic bacteria that have been shown to affect innate and adaptive immunity and have health benefits in experimental settings. We focus particularly on the cellular and molecular mechanisms of the probiotic Bacillus subtilis and its active molecule, exopolysaccharide (ESPBs).
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14
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Duboux S, Van Wijchen M, Kleerebezem M. The Possible Link Between Manufacturing and Probiotic Efficacy; a Molecular Point of View on Bifidobacterium. Front Microbiol 2022; 12:812536. [PMID: 35003044 PMCID: PMC8741271 DOI: 10.3389/fmicb.2021.812536] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Accepted: 12/06/2021] [Indexed: 11/13/2022] Open
Abstract
Probiotics for food or supplement use have been studied in numerous clinical trials, addressing a broad variety of diseases, and conditions. However, discrepancies were observed in the clinical outcomes stemming from the use of lactobacillaceae and bifidobacteria strains. These differences are often attributed to variations in the clinical trial protocol like trial design, included target population, probiotic dosage, or outcome parameters measured. However, a contribution of the methods used to produce the live bioactive ingredients should not be neglected as a possible additional factor in the observed clinical outcome variations. It is well established that manufacturing conditions play a role in determining the survival and viability of probiotics, but much less is known about their influence on the probiotic molecular composition and functionality. In this review, we briefly summarize the evidence obtained for Lacticaseibacillus rhamnosus GG and Lactiplantibacillus plantarum WCFS1, highlighting that expression and presence of probiotic niche factor (NF) and/or effector molecules (EM) may be altered during production of those two well-characterized lactobacillaceae probiotic strains. Subsequently, we summarize in more depth what is the present state of knowledge about bifidobacterial probiotic NF and EM; how their expression may be modified by manufacturing related environmental factors and how that may affect their biological activity in the host. This review highlights the importance of gathering knowledge on probiotic NF and EM, to validate them as surrogate markers of probiotic functionality. We further propose that monitoring of validated NF and/or EM during production and/or in the final preparation could complement viable count assessments that are currently applied in industry. Overall, we suggest that implementation of molecular level quality controls (i.e., based on validated NF and EM), could provide mode of action based in vitro tests contributing to better control the health-promoting reliability of probiotic products.
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Affiliation(s)
- Stéphane Duboux
- Nestlé Research, Lausanne, Switzerland.,Host-Microbe Interactomics Group, Wageningen University and Research, Wageningen, Netherlands
| | - Myrthe Van Wijchen
- Nestlé Research, Lausanne, Switzerland.,Host-Microbe Interactomics Group, Wageningen University and Research, Wageningen, Netherlands
| | - Michiel Kleerebezem
- Host-Microbe Interactomics Group, Wageningen University and Research, Wageningen, Netherlands
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15
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Meng Y, Liang Z, Yi M, Tan Y, Li Z, Du P, Li A, Li C, Liu L. Enrichment of zinc in Lactobacillus plantarum DNZ-4: Impact on its characteristics, metabolites and antioxidant activity. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2021.112462] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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16
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Genomic Stability and Phenotypic Characteristics of Industrially Produced Lacticaseibacillus rhamnosus GG in a Yogurt Matrix. Appl Environ Microbiol 2021; 87:e0157521. [PMID: 34613788 DOI: 10.1128/aem.01575-21] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Lacticaseibacillus rhamnosus GG is a widely marketed probiotic with well-documented probiotic properties. Previously, deletion of the mucus-adhesive spaCBA-srtC1 genes in dairy isolates was reported. In this study, we examined the genome preservation of industrially produced L. rhamnosus GG (DSM 33156) cofermented in yogurts. In total, DNA of 66 samples, including 60 isolates, was sequenced. Population samples and 59 isolates exhibited an intact genome. One isolate exhibited loss of spaCBA-srtC1. In addition, we examined phenotypes related to the probiotic properties of L. rhamnosus GG either from frozen pellets or cofermented in yogurt. L. rhamnosus GG from frozen pellets induced a response in intestinal barrier function in vitro, in contrast to frozen pellets of the starter culture. Yogurt matrix, containing only the starter culture, induced a response, but cofermentation with L. rhamnosus GG induced a higher response. Conversely, only the starter culture stimulated cytokine secretion in dendritic cells, and it was observed that the addition of L. rhamnosus GG to the starter culture reduced the response. We conclude that the L. rhamnosus GG genome is preserved in yogurt and that common in vitro probiotic effects of L. rhamnosus GG are observed when examined in the yogurt matrix. IMPORTANCE Lacticaseibacillus rhamnosus GG is a well-documented probiotic strain recognized for its high acid and bile tolerance and properties of adhesion to enterocytes and mucus. The strain exhibits SpaCBA pili, which have been demonstrated to play an important role in adhesion and therefore are relevant for persistence in the gastrointestinal tract. Recently we demonstrated that the genome and phenotypes of L. rhamnosus GG are preserved throughout an industrial production pipeline. However, as gene deletions in L. rhamnosus GG were previously reported for isolates from dairy products, a key question on the genomic stability of L. rhamnosus GG in a yogurt matrix remained. The aim of this study was to analyze genome stability and phenotypic characteristics of L. rhamnosus GG in yogurt. We found that the genome of L. rhamnosus GG is well conserved when the organism is cofermented in yogurt. Some phenotypic characteristics are consistent in all product matrixes, while other characteristics are modulated.
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17
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Dutra-Silva L, Matteoli FP, Arisi ACM. Distribution of Genes Related to Probiotic Effects Across Lacticaseibacillus rhamnosus Revealed by Population Structure. Probiotics Antimicrob Proteins 2021; 15:548-557. [PMID: 34699013 DOI: 10.1007/s12602-021-09868-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/19/2021] [Indexed: 11/24/2022]
Abstract
The Gram-positive Lacticaseibacillus rhamnosus has been broadly reported as capable of exerting beneficial health effects. Bacterial genomic diversity may promote niche specialization, thus creating subpatterns within populations. As L. rhamnosus advantageous effects have been widely reported at strain level and few is known regarding the distribution of beneficial genes among L. rhamnosus strains, we investigated all publicly available genomes of Lactobacillus and Lacticaseibacillus genera to study the pangenome and general population structure of L. rhamnosus. Core genome multilocus sequence typing detected eight L. rhamnosus phylogroups (PG1 to PG8). L. rhamnosus harbors an open pangenome; PG1, PG3, PG4, and PG5 exhibited highly conserved gene distribution patterns. Genes significantly associated to the PG1, which comprises L. rhamnosus GG, are mainly phage-related. The adhesion operon spaCBA-srtC1 was found in 44 (24.7%) genomes; however, considering only the PG1, the prevalence was of 65%. In PG2 the spaCBA-srtC1 prevalence was of 43%. Nevertheless, both human and milk-derived strains harbored this operon. Further, two main types of bacteriocin clusters were found (Bact1 and Bact2). Bact1 predictions indicate the presence of garQ, encoding the class II bacteriocin garvieacin Q, that is mainly present in the closely related PG8A and a PG2 subcluster. PG2 harbors two distinct subclusters, harboring either spaCBA-srtC1 or Bact1. Our findings provide novel insights on the distribution of biotechnological relevant genes across L. rhamnosus population, uncovering intra-species patterns that may bring forth the development of more efficient probiotic products.
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Affiliation(s)
- Lorena Dutra-Silva
- Food Science and Technology Department, Federal University of Santa Catarina, Florianópolis, SC, Brazil
| | - Filipe P Matteoli
- Department of Soil Science, Luiz de Queiroz College of Agriculture, Piracicaba, SP, Brazil.
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18
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Fangous MS, Gosset P, Galakhoff N, Gouriou S, Guilloux CA, Payan C, Vallet S, Héry-Arnaud G, Le Berre R. Priming with intranasal lactobacilli prevents Pseudomonas aeruginosa acute pneumonia in mice. BMC Microbiol 2021; 21:195. [PMID: 34182930 PMCID: PMC8237558 DOI: 10.1186/s12866-021-02254-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Accepted: 06/09/2021] [Indexed: 11/10/2022] Open
Abstract
Background Increasing resistance to antibiotics of Pseudomonas aeruginosa leads to therapeutic deadlock and alternative therapies are needed. We aimed to evaluate the effects of Lactobacillus clinical isolates in vivo, through intranasal administration on a murine model of Pseudomonas aeruginosa pneumonia. Results We screened in vitro 50 pulmonary clinical isolates of Lactobacillus for their ability to decrease the synthesis of two QS dependent-virulence factors (elastase and pyocyanin) produced by Pseudomonas aeruginosa strain PAO1. Two blends of three Lactobacillus isolates were then tested in vivo: one with highly effective anti-PAO1 virulence factors properties (blend named L.rff for L. rhamnosus, two L. fermentum strains), and the second with no properties (blend named L.psb, for L. paracasei, L. salivarius and L. brevis). Each blend was administered intranasally to mice 18 h prior to PAO1 pulmonary infection. Animal survival, bacterial loads, cytological analysis, and cytokines secretion in the lungs were evaluated at 6 or 24 h post infection with PAO1. Intranasal priming with both lactobacilli blends significantly improved 7-day mice survival from 12% for the control PAO1 group to 71 and 100% for the two groups receiving L.rff and L.psb respectively. No mortality was observed for both control groups receiving either L.rff or L.psb. Additionally, the PAO1 lung clearance was significantly enhanced at 24 h. A 2-log and 4-log reduction was observed in the L.rff + PAO1 and L.psb + PAO1 groups respectively, compared to the control PAO1 group. Significant reductions in neutrophil recruitment and proinflammatory cytokine and chemokine secretion were observed after lactobacilli administration compared to saline solution, whereas IL-10 production was increased. Conclusions These results demonstrate that intranasal priming with lactobacilli acts as a prophylaxis, and avoids fatal complications caused by Pseudomonas aeruginosa pneumonia in mice. These results were independent of in vitro anti-Pseudomonas aeruginosa activity on QS-dependent virulence factors. Further experiments are required to identify the immune mechanism before initiating clinical trials. Supplementary Information The online version contains supplementary material available at 10.1186/s12866-021-02254-7.
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Affiliation(s)
- Marie-Sarah Fangous
- Laboratoire de biologie médicale, Centre Hospitalier de Cornouaille, Quimper, France.,Univ Brest, Inserm, EFS, UMR 1078, GGB, Brest, France
| | - Philippe Gosset
- University of Lille, CNRS UMR9017, Inserm U1019, CHRU Lille, Institut Pasteur de Lille, CIIL - Center for Infection and Immunity of Lille- OpInfIELD, Lille, France
| | | | | | | | - Christopher Payan
- Univ Brest, Inserm, EFS, UMR 1078, GGB, Brest, France.,Département de Bactériologie-Virologie, Hygiène hospitalière et Parasitologie-Mycologie, CHRU La Cavale Blanche, Brest, France
| | - Sophie Vallet
- Univ Brest, Inserm, EFS, UMR 1078, GGB, Brest, France.,Département de Bactériologie-Virologie, Hygiène hospitalière et Parasitologie-Mycologie, CHRU La Cavale Blanche, Brest, France
| | - Geneviève Héry-Arnaud
- Univ Brest, Inserm, EFS, UMR 1078, GGB, Brest, France.,Département de Bactériologie-Virologie, Hygiène hospitalière et Parasitologie-Mycologie, CHRU La Cavale Blanche, Brest, France
| | - Rozenn Le Berre
- Univ Brest, Inserm, EFS, UMR 1078, GGB, Brest, France. .,Département de Médecine Interne et Pneumologie, CHRU La Cavale Blanche, Brest, France.
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19
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De Boeck I, van den Broek MFL, Allonsius CN, Spacova I, Wittouck S, Martens K, Wuyts S, Cauwenberghs E, Jokicevic K, Vandenheuvel D, Eilers T, Lemarcq M, De Rudder C, Thys S, Timmermans JP, Vroegop AV, Verplaetse A, Van de Wiele T, Kiekens F, Hellings PW, Vanderveken OM, Lebeer S. Lactobacilli Have a Niche in the Human Nose. Cell Rep 2021; 31:107674. [PMID: 32460009 DOI: 10.1016/j.celrep.2020.107674] [Citation(s) in RCA: 54] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Revised: 02/13/2020] [Accepted: 04/30/2020] [Indexed: 12/14/2022] Open
Abstract
Although an increasing number of beneficial microbiome members are characterized for the human gut and vagina, beneficial microbes are underexplored for the human upper respiratory tract (URT). In this study, we demonstrate that taxa from the beneficial Lactobacillus genus complex are more prevalent in the healthy URT than in patients with chronic rhinosinusitis (CRS). Several URT-specific isolates are cultured, characterized, and further explored for their genetic and functional properties related to adaptation to the URT. Catalase genes are found in the identified lactobacilli, which is a unique feature within this mostly facultative anaerobic genus. Moreover, one of our isolated strains, Lactobacillus casei AMBR2, contains fimbriae that enable strong adherence to URT epithelium, inhibit the growth and virulence of several URT pathogens, and successfully colonize nasal epithelium of healthy volunteers. This study thus demonstrates that specific lactobacilli are adapted to the URT and could have a beneficial keystone function in this habitat.
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Affiliation(s)
- Ilke De Boeck
- Department of Bioscience Engineering, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
| | - Marianne F L van den Broek
- Department of Bioscience Engineering, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
| | - Camille N Allonsius
- Department of Bioscience Engineering, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
| | - Irina Spacova
- Department of Bioscience Engineering, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
| | - Stijn Wittouck
- Department of Bioscience Engineering, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
| | - Katleen Martens
- Department of Bioscience Engineering, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium; Department of Microbiology and Immunology, Clinical Immunology, KU Leuven, Herestraat 49, 3000 Leuven, Belgium
| | - Sander Wuyts
- Department of Bioscience Engineering, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
| | - Eline Cauwenberghs
- Department of Bioscience Engineering, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
| | - Katarina Jokicevic
- Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, Laboratory of Pharmaceutical Technology and Biopharmacy, University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium
| | - Dieter Vandenheuvel
- Department of Bioscience Engineering, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
| | - Tom Eilers
- Department of Bioscience Engineering, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
| | - Michelle Lemarcq
- Department of Microbial and Molecular Systems, KU Leuven, Gebroeders De Smetstraat 1, 9000 Ghent, Belgium
| | - Charlotte De Rudder
- Center for Microbial Ecology and Technology, Ghent University, Coupure Links 653, 9000 Ghent, Belgium
| | - Sofie Thys
- Department of Veterinary Sciences, University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium
| | - Jean-Pierre Timmermans
- Department of Veterinary Sciences, University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium
| | - Anneclaire V Vroegop
- ENT, Head and Neck Surgery and Communication Disorders, Antwerp University Hospital, Wilrijkstraat 10, 2650 Edegem, Belgium
| | - Alex Verplaetse
- Department of Microbial and Molecular Systems, KU Leuven, Gebroeders De Smetstraat 1, 9000 Ghent, Belgium
| | - Tom Van de Wiele
- Center for Microbial Ecology and Technology, Ghent University, Coupure Links 653, 9000 Ghent, Belgium
| | - Filip Kiekens
- Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, Laboratory of Pharmaceutical Technology and Biopharmacy, University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium
| | - Peter W Hellings
- Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, Laboratory of Pharmaceutical Technology and Biopharmacy, University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium; Clinical Department of Otorhinolaryngology, Head and Neck Surgery, University Hospitals Leuven, Herestraat 49, 3000 Leuven, Belgium
| | - Olivier M Vanderveken
- ENT, Head and Neck Surgery and Communication Disorders, Antwerp University Hospital, Wilrijkstraat 10, 2650 Edegem, Belgium; Faculty of Medicine and Health Sciences, Translational Neurosciences, University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium
| | - Sarah Lebeer
- Department of Bioscience Engineering, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium.
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20
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Spacova I, De Boeck I, Bron PA, Delputte P, Lebeer S. Topical Microbial Therapeutics against Respiratory Viral Infections. Trends Mol Med 2021; 27:538-553. [PMID: 33879402 DOI: 10.1016/j.molmed.2021.03.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 03/08/2021] [Accepted: 03/23/2021] [Indexed: 02/07/2023]
Abstract
Emerging evidence suggests that microbial therapeutics can prevent and treat respiratory viral diseases, especially when applied directly to the airways. This review presents established beneficial effects of locally administered microbial therapeutics against respiratory viral diseases and the inferred related molecular mechanisms. Several mechanisms established in the intestinal probiotics field as well as novel, niche-specific insights are relevant in the airways. Studies at cellular and organism levels highlight biologically plausible but strain-specific and host and virus context-dependent mechanisms, underlying the potential of beneficial bacteria. Large-scale clinical studies can now be rationally designed to provide a bench-to-bedside translation of the multifactorial bacterial mechanisms within the host respiratory tract, to diminish the incidence and severity of viral infections and the concomitant complications.
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Affiliation(s)
- Irina Spacova
- Research Group Environmental Ecology and Applied Microbiology, Department of Bioscience Engineering, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
| | - Ilke De Boeck
- Research Group Environmental Ecology and Applied Microbiology, Department of Bioscience Engineering, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
| | - Peter A Bron
- Research Group Environmental Ecology and Applied Microbiology, Department of Bioscience Engineering, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
| | - Peter Delputte
- Laboratory of Microbiology, Parasitology and Hygiene, University of Antwerp, Antwerp, B-2610, Belgium
| | - Sarah Lebeer
- Research Group Environmental Ecology and Applied Microbiology, Department of Bioscience Engineering, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium. @uantwerpen.be
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21
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Kononova S, Litvinova E, Vakhitov T, Skalinskaya M, Sitkin S. Acceptive Immunity: The Role of Fucosylated Glycans in Human Host-Microbiome Interactions. Int J Mol Sci 2021; 22:ijms22083854. [PMID: 33917768 PMCID: PMC8068183 DOI: 10.3390/ijms22083854] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Revised: 04/04/2021] [Accepted: 04/05/2021] [Indexed: 02/07/2023] Open
Abstract
The growth in the number of chronic non-communicable diseases in the second half of the past century and in the first two decades of the new century is largely due to the disruption of the relationship between the human body and its symbiotic microbiota, and not pathogens. The interaction of the human immune system with symbionts is not accompanied by inflammation, but is a physiological norm. This is achieved via microbiota control by the immune system through a complex balance of pro-inflammatory and suppressive responses, and only a disturbance of this balance can trigger pathophysiological mechanisms. This review discusses the establishment of homeostatic relationships during immune system development and intestinal bacterial colonization through the interaction of milk glycans, mucins, and secretory immunoglobulins. In particular, the role of fucose and fucosylated glycans in the mechanism of interactions between host epithelial and immune cells is discussed.
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Affiliation(s)
- Svetlana Kononova
- Department of Microbiology, State Research Institute of Highly Pure Biopreparations, 197110 St. Petersburg, Russia; (T.V.); (M.S.); (S.S.)
- Institute of Protein Research, Russian Academy of Sciences, 142290 Pushchino, Russia
- Correspondence:
| | - Ekaterina Litvinova
- Scientific-Research Institute of Neurosciences and Medicine, 630117 Novosibirsk, Russia;
- Siberian Federal Scientific Center of Agro-BioTechnologies, Russian Academy of Sciences, Krasnoobsk, 633501 Novosibirsk, Russia
| | - Timur Vakhitov
- Department of Microbiology, State Research Institute of Highly Pure Biopreparations, 197110 St. Petersburg, Russia; (T.V.); (M.S.); (S.S.)
| | - Maria Skalinskaya
- Department of Microbiology, State Research Institute of Highly Pure Biopreparations, 197110 St. Petersburg, Russia; (T.V.); (M.S.); (S.S.)
- Department of Internal Diseases, Gastroenterology and Dietetics, North-Western State Medical University Named after I.I. Mechnikov, 191015 St. Petersburg, Russia
| | - Stanislav Sitkin
- Department of Microbiology, State Research Institute of Highly Pure Biopreparations, 197110 St. Petersburg, Russia; (T.V.); (M.S.); (S.S.)
- Department of Internal Diseases, Gastroenterology and Dietetics, North-Western State Medical University Named after I.I. Mechnikov, 191015 St. Petersburg, Russia
- Institute of Perinatology and Pediatrics, Almazov National Medical Research Centre, 197341 St. Petersburg, Russia
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22
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Spangler JR, Caruana JC, Medintz IL, Walper SA. Harnessing the potential of Lactobacillus species for therapeutic delivery at the lumenal-mucosal interface. Future Sci OA 2021; 7:FSO671. [PMID: 33815818 PMCID: PMC8015674 DOI: 10.2144/fsoa-2020-0153] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Lactobacillus species have been studied for over 30 years in their role as commensal organisms in the human gut. Recently there has been a surge of interest in their abilities to natively and recombinantly stimulate immune activities, and studies have identified strains and novel molecules that convey particular advantages for applications as both immune adjuvants and immunomodulators. In this review, we discuss the recent advances in Lactobacillus-related activity at the gut/microbiota interface, the efforts to probe the boundaries of the direct and indirect therapeutic potential of these bacteria, and highlight the continued interest in harnessing the native capacity for the production of biogenic compounds shown to influence nervous system activity. Taken together, these aspects underscore Lactobacillus species as versatile therapeutic delivery vehicles capable of effector production at the lumenal-mucosal interface, and further establish a foundation of efficacy upon which future engineered strains can expand.
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Affiliation(s)
- Joseph R Spangler
- National Research Council Postdoctoral Fellow sited in US Naval Research Laboratory, Code 6900, Center for Bio/Molecular Science & Engineering, 4555 Overlook Ave SW, Washington DC, 20375, USA
| | - Julie C Caruana
- American Society for Engineering Education Postdoctoral Fellow sited in US Naval Research Laboratory, Code 6900, Center for Bio/Molecular Science & Engineering, 4555 Overlook Ave SW, Washington DC, 20375, USA
| | - Igor L Medintz
- US Naval Research Laboratory, Code 6900, Center for Bio/Molecular Science & Engineering, 4555 Overlook Ave SW, Washington DC, 20375, USA
| | - Scott A Walper
- US Naval Research Laboratory, Code 6900, Center for Bio/Molecular Science & Engineering, 4555 Overlook Ave SW, Washington DC, 20375, USA
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23
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Garcia-Gonzalez N, Nuñez-Sanchez MA, Villoria Recio M, Battista N, Gahan CGM, Corsetti A. Immunomodulation of J774A.1 Murine Macrophages by Lactiplantibacillus plantarum Strains Isolated From the Human Gastrointestinal Tract and Fermented Foods. Front Microbiol 2021; 11:557143. [PMID: 33510712 PMCID: PMC7835322 DOI: 10.3389/fmicb.2020.557143] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Accepted: 12/14/2020] [Indexed: 12/21/2022] Open
Abstract
Lactobacillus plantarum species (recently re-named Lactiplantibacillus (Lpb.) plantarum subsp. plantarum) can be isolated from both either the mammalian gut or specific fermented foods where they may be present at high concentrations. Whilst Lpb. plantarum strains have been proposed as potential probiotic candidates, the ability of resident strains consumed in fermented foods to interact with the host is unclear. The main objective of this study was to investigate the cellular location and ability of three different food-borne Lpb. plantarum strains isolated from different sources (table olives and cheese) to modulate the immune response of a murine macrophage-like cell line (J774A.1). For that purpose, macrophages were exposed to the three different Lpb. plantarum strains for 24 h and the expression of a panel of genes involved in the immune response, including genes encoding pattern-recognition receptors (TLRs and NLRs) and cytokines was evaluated by qRT-PCR. We also utilized chemical inhibitors of intracellular pathways to gain some insight into potential signaling mechanisms. Results showed that the native food strains of Lpb. plantarum were able to modulate the response of J774A.1 murine macrophages through a predominately NOD signaling pathway that reflects the transient intracellular location of these strains within the macrophage. The data indicate the capacity of food-dwelling Lpb. plantarum strains to influence macrophage-mediated host responses if consumed in sufficient quantities.
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Affiliation(s)
- Natalia Garcia-Gonzalez
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy.,School of Microbiology, University College Cork, Cork, Ireland
| | | | - Miguel Villoria Recio
- School of Microbiology, University College Cork, Cork, Ireland.,APC Microbiome Ireland, University College Cork, Cork, Ireland
| | - Natalia Battista
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy
| | - Cormac G M Gahan
- School of Microbiology, University College Cork, Cork, Ireland.,APC Microbiome Ireland, University College Cork, Cork, Ireland
| | - Aldo Corsetti
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy
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24
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Teame T, Wang A, Xie M, Zhang Z, Yang Y, Ding Q, Gao C, Olsen RE, Ran C, Zhou Z. Paraprobiotics and Postbiotics of Probiotic Lactobacilli, Their Positive Effects on the Host and Action Mechanisms: A Review. Front Nutr 2020; 7:570344. [PMID: 33195367 PMCID: PMC7642493 DOI: 10.3389/fnut.2020.570344] [Citation(s) in RCA: 122] [Impact Index Per Article: 30.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Accepted: 08/28/2020] [Indexed: 12/14/2022] Open
Abstract
Lactobacilli comprise an important group of probiotics for both human and animals. The emerging concern regarding safety problems associated with live microbial cells is enhancing the interest in using cell components and metabolites derived from probiotic strains. Here, we define cell structural components and metabolites of probiotic bacteria as paraprobiotics and postbiotics, respectively. Paraprobiotics and postbiotics produced from Lactobacilli consist of a wide range of molecules including peptidoglycans, surface proteins, cell wall polysaccharides, secreted proteins, bacteriocins, and organic acids, which mediate positive effect on the host, such as immunomodulatory, anti-tumor, antimicrobial, and barrier-preservation effects. In this review, we systematically summarize the paraprobiotics and postbiotics derived from Lactobacilli and their beneficial functions. We also discuss the mechanisms underlying their beneficial effects on the host, and their interaction with the host cells. This review may boost our understanding on the benefits and molecular mechanisms associated with paraprobiotics and probiotics from Lactobacilli, which may promote their applications in humans and animals.
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Affiliation(s)
- Tsegay Teame
- China-Norway Joint Lab on Fish Gastrointestinal Microbiota, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing, China.,Tigray Agricultural Research Institute, Mekelle, Ethiopia
| | - Anran Wang
- AgricultureIsLife/EnvironmentIsLife and Precision Livestock and Nutrition Unit, AgroBioChem/TERRA, Gembloux Agro-Bio Tech, University of Liege, Passage des Deportes, Gembloux, Belgium
| | - Mingxu Xie
- Norway-China Fish Gastrointestinal Microbiota Joint Lab, Institute of Biology, Norwegian University of Science and Technology, Trondheim, Norway
| | - Zhen Zhang
- Key Laboratory for Feed Biotechnology of the Ministry of Agriculture and Rural Affairs, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Yalin Yang
- Key Laboratory for Feed Biotechnology of the Ministry of Agriculture and Rural Affairs, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Qianwen Ding
- Norway-China Fish Gastrointestinal Microbiota Joint Lab, Institute of Biology, Norwegian University of Science and Technology, Trondheim, Norway
| | - Chenchen Gao
- China-Norway Joint Lab on Fish Gastrointestinal Microbiota, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Rolf Erik Olsen
- Norway-China Fish Gastrointestinal Microbiota Joint Lab, Institute of Biology, Norwegian University of Science and Technology, Trondheim, Norway
| | - Chao Ran
- Key Laboratory for Feed Biotechnology of the Ministry of Agriculture and Rural Affairs, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Zhigang Zhou
- China-Norway Joint Lab on Fish Gastrointestinal Microbiota, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing, China
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25
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Assad SE, Rolny IS, Minnaard J, Pérez PF. Bifidobacteria from human origin: interaction with phagocytic cells. J Appl Microbiol 2020; 130:1357-1367. [PMID: 32970888 DOI: 10.1111/jam.14861] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 08/19/2020] [Accepted: 09/15/2020] [Indexed: 12/16/2022]
Abstract
AIM OF THE STUDY Given that phagocytic cells are main players of the host immune response, we studied the interaction of bifidobacteria with monocytic THP-1 cells in nonopsonic conditions. METHODS AND RESULTS Association/internalization, cell response (expression of HLA-DR and TLR2), M1/M2 macrophage polarization and colocalization of micro-organisms with Lysotracker or transferrin were evaluated. Screening with eight Bifidobacterium strains showed two patterns of interactions with THP-1 cells: high and low association and phagocytosis. Two strains with different surface properties were further studied: B. bifidum CIDCA 5310 and B. adolescentis CIDCA 5317. Strain CIDCA 5310 showed higher levels of colocalization in lysosome than strain CIDCA 5317. Both strains stimulated TLR2 expression. Strain CIDCA 5317 significantly increases HLA-DR expression, however, when cells are stimulated with IFN-γ, strain CIDCA 5310 induces the highest value of expression. Noteworthy, strain CIDCA 5310 was able to upregulate both M1 and M2 markers of macrophage polarization. CONCLUSIONS Our results demonstrate that bifidobacteria from human origin show different patterns of interaction with phagocytic cells thus leading to different cell responses. These findings add further insight on the mechanisms involved in the biologic effects of probiotics. SIGNIFICANCE AND IMPACT OF THE STUDY Knowledge of the interaction of bifidobacteria with key players of the host immune response is paramount for the understanding of the mechanisms involved in the beneficial effects.
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Affiliation(s)
- S E Assad
- Centro de Investigación y Desarrollo en Criotecnología de Alimentos (CIDCA), Universidad Nacional de La Plata (UNLP), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET- CCT La Plata) and Consejo de Investigaciones Científicas de la Provincia de Buenos Aires (CICPBA), La Plata, Argentina
| | - I S Rolny
- Instituto de Estudios Inmunológicos y Fisiopatológicos (IIFP), UNLP, La Plata, Argentina.,Área Microbiología e Inmunología, Departamento de Ciencias Biológicas, UNLP, La Plata, Argentina
| | - J Minnaard
- Centro de Investigación y Desarrollo en Criotecnología de Alimentos (CIDCA), Universidad Nacional de La Plata (UNLP), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET- CCT La Plata) and Consejo de Investigaciones Científicas de la Provincia de Buenos Aires (CICPBA), La Plata, Argentina.,Área Microbiología e Inmunología, Departamento de Ciencias Biológicas, UNLP, La Plata, Argentina
| | - P F Pérez
- Centro de Investigación y Desarrollo en Criotecnología de Alimentos (CIDCA), Universidad Nacional de La Plata (UNLP), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET- CCT La Plata) and Consejo de Investigaciones Científicas de la Provincia de Buenos Aires (CICPBA), La Plata, Argentina.,Área Microbiología e Inmunología, Departamento de Ciencias Biológicas, UNLP, La Plata, Argentina
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26
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Montero-Zamora J, Cortés-Muñoz M, Esquivel P, Mora-Villalobos JA, Velázquez C. Growth conditions and survival kinetics during storage of Lactobacillus rhamnosus GG for the design of a sustainable probiotic whey-based beverage containing Costa Rican guava fruit pulp. J Food Sci 2020; 85:3478-3486. [PMID: 32901935 DOI: 10.1111/1750-3841.15430] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 08/05/2020] [Accepted: 08/10/2020] [Indexed: 12/13/2022]
Abstract
The finding of economical and practical applications for milk whey is still a challenge for dairy industries. This paper presents information about the development of a probiotic-prebiotic beverage based on Lactobacillus rhamnosus GG (LGG) and Costa Rican guava (CRG) fruit pulp with industrial potential. First, a supplemented whey media was developed for LGG growth, and the whey-supplemented media was used for fermentation in bioreactors. LGG reached a maximum growth rate of 0.32 hr-1 after 48 hr of fermentation. The whey-grown probiotics were then mixed with CRG pulp to produce the probiotic-prebiotic beverage. The survival kinetics of LGG in the formulated drink was not affected by the addition of CRG pulp (P > 0.05), and the shelf-life of the inoculated beverage surpassed 40 days with a minimum population of 106 colony forming units (CFU)/mL. Properties as pH, fructose, glucose, sucrose, and proanthocyanidins (PACs) content exhibited a significant difference after storage time (P < 0.05). Finally, three different formulas of the beverage with different whey content were compared through sensory evaluation. The prototype with 50% whey content was one of the most valuable beverage formulas according to the organoleptic parameters, which remarks about the possibility of developing a probiotic whey-based beverage containing CRG pulp. Furthermore, this is the first report about CRG beverages as a probiotic vector. PRACTICAL APPLICATION: This research focuses on the evaluation of the properties of a probiotic beverage, with a promissory industrial application using whey, as a dairy industry byproduct, combined with the pulp of the highly nutritious and subutilized Costa Rican guava (CRG) fruit.
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Affiliation(s)
- Jéssica Montero-Zamora
- National Center for Biotechnological Innovations of Costa Rica (CENIBiot), San José, 1174-1200, Costa Rica
| | - Marianela Cortés-Muñoz
- School of Food Technology, University of Costa Rica (UCR), San José, 11501-2060, Costa Rica.,National Center for Food Science and Technology (CITA), University of Costa Rica (UCR), San José, 11501-2060, Costa Rica
| | - Patricia Esquivel
- School of Food Technology, University of Costa Rica (UCR), San José, 11501-2060, Costa Rica
| | | | - Carmela Velázquez
- National Center for Food Science and Technology (CITA), University of Costa Rica (UCR), San José, 11501-2060, Costa Rica
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27
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Effect of the EM Bokashi® Multimicrobial Probiotic Preparation on the Non-specific Immune Response in Pigs. Probiotics Antimicrob Proteins 2020; 11:1264-1277. [PMID: 30187429 PMCID: PMC6853859 DOI: 10.1007/s12602-018-9460-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The aim of the study was to determine the effect of EM Bokashi® on the phagocytic activity of monocytes and granulocytes, oxidative burst, SWC3, and CD11b + CD18+ expression on monocytes and granulocytes, and the serum concentration of cytokine and lysozyme in pig. 60 Sixty female piglets were divided into two groups: I – control and II – experimental. For the experimental group, a probiotic in the form of the preparation EM Bokashi® was added to the basal feed. Flow cytometry was used to determine selected non-specific immune response parameters, intracellular production of hydrogen peroxide by peripheral granulocytes and monocytes, and surface particles in peripheral blood. The EM Bokashi® preparation used in the study was found to increase phagocytic activity mainly in monocytes, with an increased percentage of phagocytic cells in the experimental group. The highest serum lysozyme concentration in the piglets in the experimental group (2.89 mg/dl), was noted on day 42 of the study. In the group of pigs receiving EM Bokashi®, the percentage of phagocytic cells with SWC3 (monocyte/granulocyte) expression was statistically significantly higher than in the control. The increase in the number of cells with SWC3 (monocyte/granulocyte) expression in the peripheral circulation in combination with the greater capacity of the cells for phagocytosis and respiratory burst confirms that the non-specific immune response was modulated in the pigs supplemented with EM Bokashi®.
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28
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Mantziari A, Tölkkö S, Ouwehand AC, Löyttyniemi E, Isolauri E, Salminen S, Rautava S. The Effect of Donor Human Milk Fortification on The Adhesion of Probiotics In Vitro. Nutrients 2020; 12:nu12010182. [PMID: 31936487 PMCID: PMC7019708 DOI: 10.3390/nu12010182] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Revised: 01/01/2020] [Accepted: 01/04/2020] [Indexed: 12/22/2022] Open
Abstract
Preterm delivery complications are the primary cause of death among children under the age of five. Preventive strategies include the use of pasteurized donor human milk (DHM), its fortification with human milk fortifiers (protein supplements), and supplementation with probiotics. Our aim was to examine the impact of DHM and fortified DHM (FDHM) on the mucus adhesion properties of two widely used probiotics. The study covered two forms of human milk fortifier, liquid and powdered, with or without probiotics and storage at 4 °C for 24 h. To test the adhesion properties of the probiotic strains, DHM+probiotics and FDHM+probiotics were prepared and added to immobilized mucus isolated from the stool of healthy Finnish infants. The probiotic adhesion was then measured by liquid scintillation. Our results suggest that addition of liquid or powdered human milk fortifier in donor human milk had no impact on probiotic adhesion. In addition, given the increased adhesion of probiotics suspended in buffer, other matrices should be further studied. These factors need to be considered when designing future intervention strategies using probiotics in preterm infants.
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Affiliation(s)
- Anastasia Mantziari
- Functional Foods Forum, Faculty of Medicine, University of Turku, Itäinen Pitkäkatu 4A, 20520 Turku, Finland; (S.T.); (S.S.)
- Correspondence: ; Tel.: +35-829-450-3820
| | - Satu Tölkkö
- Functional Foods Forum, Faculty of Medicine, University of Turku, Itäinen Pitkäkatu 4A, 20520 Turku, Finland; (S.T.); (S.S.)
| | - Artur C. Ouwehand
- DuPont Nutrition and Biosciences, Sokeritehtaantie 20, 02460 Kantvik, Finland;
| | - Eliisa Löyttyniemi
- Unit of Biostatistics, Department of Clinical Medicine University of Turku, Kiinamyllynkatu 10, 20520 Turku, Finland;
| | - Erika Isolauri
- Department of Pediatrics, University of Turku and Turku University Hospital, Kiinamyllynkatu 4-8, 20520 Turku, Finland; (E.I.); (S.R.)
| | - Seppo Salminen
- Functional Foods Forum, Faculty of Medicine, University of Turku, Itäinen Pitkäkatu 4A, 20520 Turku, Finland; (S.T.); (S.S.)
| | - Samuli Rautava
- Department of Pediatrics, University of Turku and Turku University Hospital, Kiinamyllynkatu 4-8, 20520 Turku, Finland; (E.I.); (S.R.)
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29
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Wuyts S, Van Beeck W, Allonsius CN, van den Broek MF, Lebeer S. Applications of plant-based fermented foods and their microbes. Curr Opin Biotechnol 2019; 61:45-52. [PMID: 31733464 DOI: 10.1016/j.copbio.2019.09.023] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Revised: 09/24/2019] [Accepted: 09/26/2019] [Indexed: 12/18/2022]
Abstract
Plant-based fermentations and their microbes provide an underexplored source for novel biotechnological applications. Recent advances in DNA sequencing technologies and analyses of sequencing data highlight that a diverse array of lactic acid bacteria (LAB) frequently dominate these plant fermentations. Because of the long history of safe LAB use in fermented foods, we argue here that various novel probiotic, synbiotic and a range of other industrial applications can be produced based on new insights in the functional and genetic potential of these LAB. To aid in this quest, comparative genomics tools are increasingly available enabling a more rational design of wet-lab experiments to screen for the most relevant properties. This is also true for the exploration of useful enzymatic and (secondary) metabolic production capacities of the LAB that can be isolated from these plant-based fermentations, such as the recent discovery of a cellulase enzyme in specific Lactobacillus plantarum group members.
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Affiliation(s)
- Sander Wuyts
- Environmental Ecology and Applied Microbiology (ENdEMIC), Department of Bioscience Engineering, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
| | - Wannes Van Beeck
- Environmental Ecology and Applied Microbiology (ENdEMIC), Department of Bioscience Engineering, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
| | - Camille Nina Allonsius
- Environmental Ecology and Applied Microbiology (ENdEMIC), Department of Bioscience Engineering, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
| | - Marianne Fl van den Broek
- Environmental Ecology and Applied Microbiology (ENdEMIC), Department of Bioscience Engineering, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
| | - Sarah Lebeer
- Environmental Ecology and Applied Microbiology (ENdEMIC), Department of Bioscience Engineering, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium.
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30
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Bravo M, Combes T, Martinez FO, Cerrato R, Rey J, Garcia-Jimenez W, Fernandez-Llario P, Risco D, Gutierrez-Merino J. Lactobacilli Isolated From Wild Boar ( Sus scrofa) Antagonize Mycobacterium bovis Bacille Calmette-Guerin (BCG) in a Species-Dependent Manner. Front Microbiol 2019; 10:1663. [PMID: 31417502 PMCID: PMC6683848 DOI: 10.3389/fmicb.2019.01663] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2018] [Accepted: 07/04/2019] [Indexed: 01/06/2023] Open
Abstract
Background: Wildlife poses a significant burden for the complete eradication of bovine tuberculosis (bTB). In particular, wild boar (Sus scrofa) is one of the most important reservoirs of Mycobacterium bovis, the causal agent of bTB. Wild boar can display from mild TB lesions, usually found in head lymph nodes, to generalized TB lesions distributed in different anatomical regions; but rarely clinical signs, which complicates the diagnosis of Mycobacterium bovis infection and bTB control. Among the possibilities for this variability in lesion distribution is the influence of the host-beneficial commensal-primed immune barrier. In this respect, beneficial microbes may delay bTB dissemination as a consequence of an antagonistic competition for nutrients and phagocytes. In order to explore this possibility, we have tested whether typical commensals such as lactobacilli have the capacity to reduce the survival rate of the surrogate M. bovis strain Bacillus Calmette-Guerin (BCG); and to modulate its phagocyte intake. Results: Three Lactobacillus species, L. casei, L. plantarum, and L. salivarius, isolated from wild boar feces displayed a pH-dependent inhibitory activity against BCG and influenced its intake by porcine blood phagocytes in a species-dependent manner. All lactobacilli showed a very significant bactericidal effect against BCG at low pH, but only isolates of L. plantarum and L. casei displayed such antimycobacterial activity at neutral pH. The genomes of these isolates revealed the presence of two-peptide bacteriocins whose precursor genes up-regulate in the presence of BCG cells. Furthermore, L. plantarum reduced significantly the BCG phagocytic intake, whereas L. casei had the opposite effect. L. salivarius had no significant influence on the phagocytic response to BCG. Conclusions: Our in vitro results show that lactobacilli isolated from wild boar antagonize BCG as a consequence of their antimycobacterial activity and a competitive phagocytic response. These findings suggest that commensal bacteria could play a beneficial role in influencing the outcome of bTB dissemination. Further work with lactobacilli as a potential competitive pressure to control bTB will need to take into account the complex nature of the commensal microbiome, the specific immunity of the wild boar and the in vivo infection context with pathogenic strains of M. bovis.
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Affiliation(s)
- Maria Bravo
- Innovación en Gestión y Conservación de Ungulados SL, Cáceres, Spain.,Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad de Extremadura, Cáceres, Spain
| | - Theo Combes
- Department of Biochemical Sciences, School of Biosciences and Medicine, University of Surrey, Guildford, United Kingdom
| | - Fernando O Martinez
- Department of Biochemical Sciences, School of Biosciences and Medicine, University of Surrey, Guildford, United Kingdom
| | - Rosario Cerrato
- Innovación en Gestión y Conservación de Ungulados SL, Cáceres, Spain
| | - Joaquín Rey
- Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad de Extremadura, Cáceres, Spain
| | | | | | - David Risco
- Innovación en Gestión y Conservación de Ungulados SL, Cáceres, Spain
| | - Jorge Gutierrez-Merino
- Department of Nutritional Sciences, School of Biosciences and Medicine, University of Surrey, Guildford, United Kingdom
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31
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Translating Recent Microbiome Insights in Otitis Media into Probiotic Strategies. Clin Microbiol Rev 2019; 32:32/4/e00010-18. [PMID: 31270125 DOI: 10.1128/cmr.00010-18] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
The microbiota of the upper respiratory tract (URT) protects the host from bacterial pathogenic colonization by competing for adherence to epithelial cells and by immune response regulation that includes the activation of antimicrobial and (anti-)inflammatory components. However, environmental or host factors can modify the microbiota to an unstable community that predisposes the host to infection or inflammation. One of the URT diseases most often encountered in children is otitis media (OM). The role of pathogenic bacteria like Streptococcus pneumoniae, Haemophilus influenzae, and Moraxella catarrhalis in the pathogenesis of OM is well documented. Results from next-generation-sequencing (NGS) studies reveal other bacterial taxa involved in OM, such as Turicella and Alloiococcus Such studies can also identify bacterial taxa that are potentially protective against URT infections, whose beneficial action needs to be substantiated in relevant experimental models and clinical trials. Of note, lactic acid bacteria (LAB) are members of the URT microbiota and associated with a URT ecosystem that is deemed healthy, based on NGS and some experimental and clinical studies. These observations have formed the basis of this review, in which we describe the current knowledge of the molecular and clinical potential of LAB in the URT, which is currently underexplored in microbiome and probiotic research.
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32
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Monteagudo-Mera A, Rastall RA, Gibson GR, Charalampopoulos D, Chatzifragkou A. Adhesion mechanisms mediated by probiotics and prebiotics and their potential impact on human health. Appl Microbiol Biotechnol 2019; 103:6463-6472. [PMID: 31267231 PMCID: PMC6667406 DOI: 10.1007/s00253-019-09978-7] [Citation(s) in RCA: 284] [Impact Index Per Article: 56.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Revised: 06/07/2019] [Accepted: 06/10/2019] [Indexed: 12/14/2022]
Abstract
Adhesion ability to the host is a classical selection criterion for potential probiotic bacteria that could result in a transient colonisation that would help to promote immunomodulatory effects, as well as stimulate gut barrier and metabolic functions. In addition, probiotic bacteria have a potential protective role against enteropathogens through different mechanisms including production of antimicrobial compounds, reduction of pathogenic bacterial adhesion and competition for host cell binding sites. The competitive exclusion by probiotic bacteria has a beneficial effect not only on the gut but also in the urogenital tract and oral cavity. On the other hand, prebiotics may also act as barriers to pathogens and toxins by preventing their adhesion to epithelial receptors. In vitro studies with different intestinal cell lines have been widely used along the last decades to assess the adherence ability of probiotic bacteria and pathogen antagonism. However, extrapolation of these results to in vivo conditions still remains unclear, leading to the need of optimisation of more complex in vitro approaches that include interaction with the resident microbiota to address the current limitations. The aim of this mini review is to provide a comprehensive overview on the potential effect of the adhesive properties of probiotics and prebiotics on the host by focusing on the most recent findings related with adhesion and immunomodulatory and antipathogenic effect on human health.
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Affiliation(s)
- Andrea Monteagudo-Mera
- Biomedical Sciences, School of Biological Sciences, University of Reading, Reading, RG6 6AH, UK.
| | - Robert A Rastall
- Department of Food and Nutritional Sciences, University of Reading, Whiteknights, PO Box 226, Reading, RG6 6AP, UK
| | - Glenn R Gibson
- Department of Food and Nutritional Sciences, University of Reading, Whiteknights, PO Box 226, Reading, RG6 6AP, UK
| | - Dimitris Charalampopoulos
- Department of Food and Nutritional Sciences, University of Reading, Whiteknights, PO Box 226, Reading, RG6 6AP, UK
| | - Afroditi Chatzifragkou
- Department of Food and Nutritional Sciences, University of Reading, Whiteknights, PO Box 226, Reading, RG6 6AP, UK.
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33
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Etienne-Mesmin L, Chassaing B, Desvaux M, De Paepe K, Gresse R, Sauvaitre T, Forano E, de Wiele TV, Schüller S, Juge N, Blanquet-Diot S. Experimental models to study intestinal microbes–mucus interactions in health and disease. FEMS Microbiol Rev 2019; 43:457-489. [DOI: 10.1093/femsre/fuz013] [Citation(s) in RCA: 71] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Accepted: 05/31/2019] [Indexed: 02/06/2023] Open
Abstract
ABSTRACT
A close symbiotic relationship exists between the intestinal microbiota and its host. A critical component of gut homeostasis is the presence of a mucus layer covering the gastrointestinal tract. Mucus is a viscoelastic gel at the interface between the luminal content and the host tissue that provides a habitat to the gut microbiota and protects the intestinal epithelium. The review starts by setting up the biological context underpinning the need for experimental models to study gut bacteria-mucus interactions in the digestive environment. We provide an overview of the structure and function of intestinal mucus and mucins, their interactions with intestinal bacteria (including commensal, probiotics and pathogenic microorganisms) and their role in modulating health and disease states. We then describe the characteristics and potentials of experimental models currently available to study the mechanisms underpinning the interaction of mucus with gut microbes, including in vitro, ex vivo and in vivo models. We then discuss the limitations and challenges facing this field of research.
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Affiliation(s)
- Lucie Etienne-Mesmin
- Université Clermont Auvergne, INRA, MEDIS, 28 Place Henri Dunant, 63000 Clermont-Ferrand, France
| | - Benoit Chassaing
- Neuroscience Institute, Georgia State University, 100 Piedmont Ave SE, Atlanta, GA 30303 , USA
- Institute for Biomedical Sciences, Georgia State University, 100 Piedmont Ave, Atlanta, GA 30303 , USA
| | - Mickaël Desvaux
- Université Clermont Auvergne, INRA, MEDIS, 28 Place Henri Dunant, 63000 Clermont-Ferrand, France
| | - Kim De Paepe
- Center for Microbial Ecology and Technology (CMET), Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000 Ghent, Belgium
| | - Raphaële Gresse
- Université Clermont Auvergne, INRA, MEDIS, 28 Place Henri Dunant, 63000 Clermont-Ferrand, France
| | - Thomas Sauvaitre
- Université Clermont Auvergne, INRA, MEDIS, 28 Place Henri Dunant, 63000 Clermont-Ferrand, France
| | - Evelyne Forano
- Université Clermont Auvergne, INRA, MEDIS, 28 Place Henri Dunant, 63000 Clermont-Ferrand, France
| | - Tom Van de Wiele
- Center for Microbial Ecology and Technology (CMET), Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000 Ghent, Belgium
| | - Stephanie Schüller
- Norwich Medical School, University of East Anglia, Norwich Research Park, Norwich NR4 7TJ, United Kingdom
- Quadram Institute Bioscience, Norwich Research Park, Norwich NR7UQ, United Kingdom
| | - Nathalie Juge
- Quadram Institute Bioscience, Norwich Research Park, Norwich NR7UQ, United Kingdom
| | - Stéphanie Blanquet-Diot
- Université Clermont Auvergne, INRA, MEDIS, 28 Place Henri Dunant, 63000 Clermont-Ferrand, France
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34
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Allonsius CN, Vandenheuvel D, Oerlemans EFM, Petrova MI, Donders GGG, Cos P, Delputte P, Lebeer S. Inhibition of Candida albicans morphogenesis by chitinase from Lactobacillus rhamnosus GG. Sci Rep 2019; 9:2900. [PMID: 30814593 PMCID: PMC6393446 DOI: 10.1038/s41598-019-39625-0] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Accepted: 01/24/2019] [Indexed: 01/09/2023] Open
Abstract
Lactobacilli have been evaluated as probiotics against Candida infections in several clinical trials, but with variable results. Predicting and understanding the clinical efficacy of Lactobacillus strains is hampered by an overall lack of insights into their modes of action. In this study, we aimed to unravel molecular mechanisms underlying the inhibitory effects of lactobacilli on hyphal morphogenesis, which is a crucial step in C. albicans virulence. Based on a screening of different Lactobacillus strains, we found that the closely related taxa L. rhamnosus, L. casei and L. paracasei showed stronger activity against Candida hyphae formation compared to other Lactobacillus species tested. By exploring the activity of purified compounds and mutants of the model strain L. rhamnosus GG, the major peptidoglycan hydrolase Msp1, conserved in the three closely related taxa, was identified as a key effector molecule. We could show that this activity of Msp1 was due to its ability to break down chitin, the main polymer in the hyphal cell wall of C. albicans. This identification of a Lactobacillus-specific protein with chitinase activity having anti-hyphal activity will assist in better strain selection and improved application in future clinical trials for Lactobacillus-based Candida-management strategies.
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Affiliation(s)
- Camille Nina Allonsius
- University of Antwerp, Department of Bioscience Engineering, Research Group Environmental Ecology and Applied Microbiology, Antwerp, Belgium
| | - Dieter Vandenheuvel
- University of Antwerp, Department of Bioscience Engineering, Research Group Environmental Ecology and Applied Microbiology, Antwerp, Belgium
| | - Eline F M Oerlemans
- University of Antwerp, Department of Bioscience Engineering, Research Group Environmental Ecology and Applied Microbiology, Antwerp, Belgium
| | - Mariya I Petrova
- University of Antwerp, Department of Bioscience Engineering, Research Group Environmental Ecology and Applied Microbiology, Antwerp, Belgium
| | - Gilbert G G Donders
- Department of Obstetrics and Gynaecology, Antwerp University Hospital, Antwerp, Belgium.,Femicare Clinical Research for Women, Tienen, Belgium
| | - Paul Cos
- University of Antwerp, Department of Biomedical Sciences, Laboratory of Microbiology, Parasitology and Hygiene, Wilrijk, Belgium
| | - Peter Delputte
- University of Antwerp, Department of Biomedical Sciences, Laboratory of Microbiology, Parasitology and Hygiene, Wilrijk, Belgium
| | - Sarah Lebeer
- University of Antwerp, Department of Bioscience Engineering, Research Group Environmental Ecology and Applied Microbiology, Antwerp, Belgium.
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35
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Spacova I, Petrova MI, Fremau A, Pollaris L, Vanoirbeek J, Ceuppens JL, Seys S, Lebeer S. Intranasal administration of probiotic Lactobacillus rhamnosus GG prevents birch pollen-induced allergic asthma in a murine model. Allergy 2019; 74:100-110. [PMID: 29888398 DOI: 10.1111/all.13502] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/21/2018] [Indexed: 02/06/2023]
Abstract
BACKGROUND There is an increasing interest in targeted application of probiotic bacteria for prevention and treatment of airway diseases, including allergies. Here, we investigated the beneficial effects of preventive intranasal treatment with probiotics Lactobacillus rhamnosus GG and L. rhamnosus GR-1 in a mouse model of allergic asthma. METHODS Lactobacillus rhamnosus was administered intranasally eight times on days 1-4 and 8-11 at 5 × 108 CFU/dose, followed by a 2-week asthma induction protocol with birch pollen extract on alternating days. Effects of preventive treatment were analyzed based on serum antibody levels, bronchoalveolar lavage cell counts, lung histology, lung cytokine levels, and airway hyperreactivity. Colonization and translocation of L. rhamnosus were assessed by bacterial cell counts in nasal mucosa, fecal samples, cervical lymph nodes, and blood. Binding of fluorescent L. rhamnosus to fixed murine nasal mucosal cells and airway macrophages was visualized by fluorescence microscopy. RESULTS Transient colonization of the murine upper airways by L. rhamnosus GG was demonstrated and was approximately ten times higher compared to L. rhamnosus GR-1. Marked binding of fluorescent L. rhamnosus GG to murine nasal mucosal cells and airway macrophages was visualized. Preventive treatment with L. rhamnosus GG (but not L. rhamnosus GR-1) resulted in a significant decrease in bronchoalveolar lavage eosinophil counts, lung interleukin-13 and interleukin-5 levels, and airway hyperreactivity. A tendency toward a decrease in serum Bet v 1-specific immunoglobulin G1 was likewise observed. CONCLUSION Intranasally administered L. rhamnosus GG prevents the development of cardinal features of birch pollen-induced allergic asthma in a strain-specific manner.
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Affiliation(s)
- I. Spacova
- Centre of Microbial and Plant Genetics Department of Microbial and Molecular Systems (M²S) KU Leuven Leuven Belgium
- Research Group Environmental Ecology and Applied Microbiology Department of Bioscience Engineering University of Antwerp Antwerp Belgium
| | - M. I. Petrova
- Centre of Microbial and Plant Genetics Department of Microbial and Molecular Systems (M²S) KU Leuven Leuven Belgium
- Research Group Environmental Ecology and Applied Microbiology Department of Bioscience Engineering University of Antwerp Antwerp Belgium
| | - A. Fremau
- Centre of Microbial and Plant Genetics Department of Microbial and Molecular Systems (M²S) KU Leuven Leuven Belgium
| | - L. Pollaris
- Centre for Environment and Health Department of Public Health and Primary Care KU Leuven Leuven Belgium
| | - J. Vanoirbeek
- Centre for Environment and Health Department of Public Health and Primary Care KU Leuven Leuven Belgium
| | - J. L. Ceuppens
- Laboratory of Clinical Immunology Department of Microbiology and Immunology KU Leuven Leuven Belgium
| | - S. Seys
- Laboratory of Clinical Immunology Department of Microbiology and Immunology KU Leuven Leuven Belgium
| | - S. Lebeer
- Centre of Microbial and Plant Genetics Department of Microbial and Molecular Systems (M²S) KU Leuven Leuven Belgium
- Research Group Environmental Ecology and Applied Microbiology Department of Bioscience Engineering University of Antwerp Antwerp Belgium
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O'Connell Motherway M, Houston A, O’Callaghan G, Reunanen J, O’Brien F, O’Driscoll T, Casey PG, de Vos WM, van Sinderen D, Shanahan F. A Bifidobacterial pilus-associated protein promotes colonic epithelial proliferation. Mol Microbiol 2018; 111:287-301. [DOI: 10.1111/mmi.14155] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/16/2018] [Indexed: 01/15/2023]
Affiliation(s)
- Mary O'Connell Motherway
- APC Microbiome Ireland, National University of Ireland; Western Road Cork Ireland
- School of Microbiology; National University of Ireland; Western Road Cork Ireland
| | - Aileen Houston
- APC Microbiome Ireland, National University of Ireland; Western Road Cork Ireland
- Department of Medicine; National University of Ireland, Cork University Hospital; Cork Ireland
| | - Grace O’Callaghan
- APC Microbiome Ireland, National University of Ireland; Western Road Cork Ireland
- Department of Medicine; National University of Ireland, Cork University Hospital; Cork Ireland
| | - Justus Reunanen
- Research Programme Unit Immunobiology, Department of Bacteriology and Immunology; Helsinki University; Helsinki Finland
- Cancer and Translational Medicine Research Unit and Biocenter Oulu; University of Oulu; Oulu Finland
| | - Frances O’Brien
- APC Microbiome Ireland, National University of Ireland; Western Road Cork Ireland
| | - Tara O’Driscoll
- APC Microbiome Ireland, National University of Ireland; Western Road Cork Ireland
| | - Patrick G. Casey
- APC Microbiome Ireland, National University of Ireland; Western Road Cork Ireland
| | - Willem M. de Vos
- Research Programme Unit Immunobiology, Department of Bacteriology and Immunology; Helsinki University; Helsinki Finland
- Laboratory of Microbiology; Wageningen University; The Netherlands
| | - Douwe van Sinderen
- APC Microbiome Ireland, National University of Ireland; Western Road Cork Ireland
- School of Microbiology; National University of Ireland; Western Road Cork Ireland
| | - Fergus Shanahan
- APC Microbiome Ireland, National University of Ireland; Western Road Cork Ireland
- Department of Medicine; National University of Ireland, Cork University Hospital; Cork Ireland
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Spacova I, Lievens E, Verhoeven T, Steenackers H, Vanderleyden J, Lebeer S, Petrova MI. Expression of fluorescent proteins in Lactobacillus rhamnosus to study host-microbe and microbe-microbe interactions. Microb Biotechnol 2018; 11:317-331. [PMID: 29027368 PMCID: PMC5812243 DOI: 10.1111/1751-7915.12872] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Revised: 08/12/2017] [Accepted: 08/25/2017] [Indexed: 12/28/2022] Open
Abstract
Probiotic Lactobacillus strains are widely used to benefit human and animal health, although the exact mechanisms behind their interactions with the host and the microbiota are largely unknown. Fluorescent tagging of live probiotic cells is an important tool to unravel their modes of action. In this study, the implementation of different heterologously expressed fluorescent proteins for the labelling of the model probiotic strains Lactobacillus rhamnosusGG (gastrointestinal) and Lactobacillus rhamnosusGR-1 (vaginal) was explored. Heterologous expression of mTagBFP2 and mCherry resulted in long-lasting fluorescence of L. rhamnosusGG and GR-1 cells, using the nisin-controlled expression (NICE) system. These novel fluorescent strains were then used to study in vitro aspects of their microbe-microbe and microbe-host interactions. Lactobacillus rhamnosusGG and L. rhamnosusGR-1 expressing mTagBFP2 and mCherry could be visualized in mixed-species biofilms, where they inhibited biofilm formation by Salmonella Typhimurium-gfpmut3 expressing the green fluorescent protein. Likewise, fluorescent L. rhamnosusGG and L. rhamnosusGR-1 were implemented for the visualization of their adhesion patterns to intestinal epithelial cell cultures. The fluorescent L. rhamnosus strains developed in this study can therefore serve as novel tools for the study of probiotic interactions with their environment.
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Affiliation(s)
- Irina Spacova
- Centre of Microbial and Plant GeneticsKU LeuvenHeverleeBelgium
- Department of Bioscience EngineeringUniversity of AntwerpAntwerpBelgium
| | - Elke Lievens
- Centre of Microbial and Plant GeneticsKU LeuvenHeverleeBelgium
- Department of Bioscience EngineeringUniversity of AntwerpAntwerpBelgium
| | - Tine Verhoeven
- Centre of Microbial and Plant GeneticsKU LeuvenHeverleeBelgium
| | | | | | - Sarah Lebeer
- Centre of Microbial and Plant GeneticsKU LeuvenHeverleeBelgium
- Department of Bioscience EngineeringUniversity of AntwerpAntwerpBelgium
| | - Mariya I. Petrova
- Centre of Microbial and Plant GeneticsKU LeuvenHeverleeBelgium
- Department of Bioscience EngineeringUniversity of AntwerpAntwerpBelgium
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Rinaldi E, Consonni A, Guidesi E, Elli M, Mantegazza R, Baggi F. Gut microbiota and probiotics: novel immune system modulators in myasthenia gravis? Ann N Y Acad Sci 2018; 1413:49-58. [PMID: 29341125 DOI: 10.1111/nyas.13567] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Revised: 10/31/2017] [Accepted: 11/02/2017] [Indexed: 12/20/2022]
Abstract
Gut microorganisms (microbiota) live in symbiosis with the host and influence human nutrition, metabolism, physiology, and immune development and function. The microbiota prevents pathogen infection to the host, and in turn the host provides a niche for survival. The alteration of gut bacteria composition (dysbiosis) could contribute to the development of immune-mediated diseases by influencing the immune system activation and driving the pro- and anti-inflammatory responses in order to promote or counteract immune reactions. Probiotics are nonpathogenic microorganisms able to interact with the gut microbiota and provide health benefits; their use has recently been exploited to dampen immunological response in several experimental models of autoimmune diseases. Here, we focus on the relationships among commensal bacteria, probiotics, and the gut, describing the main interactions occurring with the immune system and recent data supporting the clinical efficacy of probiotic administration in rheumatoid arthritis, multiple sclerosis, and myasthenia gravis (MG) animal models. The encouraging results suggest that selected strains of probiotics should be evaluated in clinical trials as adjuvant therapy to restore the disrupted tolerance in myasthenia gravis.
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Affiliation(s)
- Elena Rinaldi
- Neurology IV-Neuroimmunology and Neuromuscular Diseases Unit, Neurological Institute "Carlo Besta," Milan, Italy
| | - Alessandra Consonni
- Neurology IV-Neuroimmunology and Neuromuscular Diseases Unit, Neurological Institute "Carlo Besta," Milan, Italy
| | - Elena Guidesi
- AAT-Advanced Analytical Technologies, Fiorenzuola d'Arda, Piacenza, Italy
| | - Marina Elli
- AAT-Advanced Analytical Technologies, Fiorenzuola d'Arda, Piacenza, Italy
| | - Renato Mantegazza
- Neurology IV-Neuroimmunology and Neuromuscular Diseases Unit, Neurological Institute "Carlo Besta," Milan, Italy
| | - Fulvio Baggi
- Neurology IV-Neuroimmunology and Neuromuscular Diseases Unit, Neurological Institute "Carlo Besta," Milan, Italy
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Suzuki C, Aoki-Yoshida A, Aoki R, Sasaki K, Takayama Y, Mizumachi K. The distinct effects of orally administered Lactobacillus rhamnosus GG and Lactococcus lactis subsp. lactis C59 on gene expression in the murine small intestine. PLoS One 2017; 12:e0188985. [PMID: 29220366 PMCID: PMC5722381 DOI: 10.1371/journal.pone.0188985] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2017] [Accepted: 11/16/2017] [Indexed: 12/31/2022] Open
Abstract
The molecular mechanisms of strain-specific probiotic effects and the impact of the oral administration of probiotic strains on the host’s gene expression are not yet well understood. The aim of this study was to investigate the strain-specific effects of probiotic strain intake on gene expression in the murine small intestine. Two distinct strains of lactic acid bacteria, Lactobacillus rhamnosus GG (GG) and Lactococcus lactis subsp. lactis C59 (C59), were orally administered to BALB/c mice, daily for 2 weeks. The total RNA was isolated from the upper (including the duodenum) and lower (the terminal ileum) small intestine, and gene expression was assessed by microarray analysis. The data revealed (1) oral administration of C59 and GG markedly down-regulated the expression of genes encoding fibrinogen subunits and plasminogen in the upper small intestine; (2) administration of more than 1 × 107 CFU/day of GG changed the gene expression of the host ileum. (3) strain- and dose-related effects on various GO biological processes; and (4) enrichment for B cell-related Gene Ontology terms among up-regulated genes in the terminal ileum of mice administered the 1 × 109 CFU/day of GG. The distinct effects of GG and C59 on gene expression in the intact small intestine provide clues to understand how the health beneficial effects of specific strains of probiotic bacteria are mediated by interactions with intestinal cells.
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Affiliation(s)
- Chise Suzuki
- Institute of Livestock and Grassland Science, National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki, Japan
- * E-mail:
| | - Ayako Aoki-Yoshida
- Institute of Livestock and Grassland Science, National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki, Japan
| | - Reiji Aoki
- Institute of Livestock and Grassland Science, National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki, Japan
| | - Keisuke Sasaki
- Institute of Livestock and Grassland Science, National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki, Japan
| | - Yoshiharu Takayama
- Institute of Livestock and Grassland Science, National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki, Japan
| | - Koko Mizumachi
- Institute of Livestock and Grassland Science, National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki, Japan
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40
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Lebeer S, Bron PA, Marco ML, Van Pijkeren JP, O'Connell Motherway M, Hill C, Pot B, Roos S, Klaenhammer T. Identification of probiotic effector molecules: present state and future perspectives. Curr Opin Biotechnol 2017; 49:217-223. [PMID: 29153882 DOI: 10.1016/j.copbio.2017.10.007] [Citation(s) in RCA: 149] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Revised: 10/24/2017] [Accepted: 10/31/2017] [Indexed: 01/01/2023]
Abstract
Comprehension of underlying mechanisms of probiotic action will support rationale selection of probiotic strains and targeted clinical study design with a higher likelihood of success. This will consequently contribute to better substantiation of health claims. Here, we aim to provide a perspective from a microbiology point of view that such comprehensive understanding is not straightforward. We show examples of well-documented probiotic effector molecules in Lactobacillus and Bifidobacterium strains, including surface-located molecules such as specific pili, S-layer proteins, exopolysaccharides, muropeptides, as well as more widely produced metabolites such as tryptophan-related and histamine-related metabolites, CpG-rich DNA, and various enzymes such as lactase and bile salt hydrolases. We also present recent advances in genetic tool development, microbiome analyses and model systems, as well as perspectives on how the field could further progress. This opinion is based on a discussion group organized at the annual meeting of the International Scientific Association on Probiotics and Prebiotics (ISAPP) in June 2017.
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Affiliation(s)
- Sarah Lebeer
- University of Antwerp, Department of Bioscience Engineering, Groenenborgerlaan 171, 2020 Antwerp, Belgium.
| | | | - Maria L Marco
- Department of Food Science & Technology, University of California, Davis, USA
| | | | - Mary O'Connell Motherway
- School of Microbiology and APC Microbiome Institute, National University of Ireland, Western Road, Cork, Ireland
| | - Colin Hill
- School of Microbiology and APC Microbiome Institute, National University of Ireland, Western Road, Cork, Ireland
| | - Bruno Pot
- Yakult R&D, Europe, Almere, The Netherlands; Vrije Universiteit Brussels, Belgium
| | - Stefan Roos
- Swedish University of Agricultural Sciences & BioGaia AB, Sweden
| | - Todd Klaenhammer
- Department of Food, Bioprocessing & Nutrition Sciences, North Carolina State University, Raleigh, USA
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41
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Kristensen MF, Zeng G, Neu TR, Meyer RL, Baelum V, Schlafer S. Osteopontin adsorption to Gram-positive cells reduces adhesion forces and attachment to surfaces under flow. J Oral Microbiol 2017; 9:1379826. [PMID: 29081915 PMCID: PMC5646589 DOI: 10.1080/20002297.2017.1379826] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Accepted: 09/07/2017] [Indexed: 01/27/2023] Open
Abstract
The bovine milk protein osteopontin (OPN) may be an efficient means to prevent bacterial adhesion to dental tissues and control biofilm formation. This study sought to determine to what extent OPN impacts adhesion forces and surface attachment of different bacterial strains involved in dental caries or medical device–related infections. It further investigated if OPN’s effect on adhesion is caused by blocking the accessibility of glycoconjugates on bacterial surfaces. Bacterial adhesion was determined in a shear-controlled flow cell system in the presence of different concentrations of OPN, and interaction forces of single bacteria were quantified using single-cell force spectroscopy before and after OPN exposure. Moreover, the study investigated OPN’s effect on the accessibility of cell surface glycoconjugates through fluorescence lectin-binding analysis. OPN strongly affected bacterial adhesion in a dose-dependent manner for all investigated species (Actinomyces naeslundii, Actinomyces viscosus, Lactobacillus paracasei subsp. paracasei, Staphylococcus epidermidis, Streptococcus mitis, and Streptococcus oralis). Likewise, adhesion forces decreased after OPN treatment. No effect of OPN on the lectin-accessibility to glycoconjugates was found. OPN reduces the adhesion and adhesion force/energy of a variety of bacteria and has a potential therapeutic use for biofilm control. OPN acts upon bacterial adhesion without blocking cell surface glycoconjugates.
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Affiliation(s)
- M F Kristensen
- Department of Dentistry and Oral Health, Aarhus University, Aarhus, Denmark
| | - G Zeng
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Aarhus, Denmark
| | - T R Neu
- Department of River Ecology, Helmholtz Centre for Environmental Research - UFZ, Magdeburg, Germany
| | - R L Meyer
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Aarhus, Denmark.,Section of Microbiology, Department of Bioscience;Aarhus University, Aarhus, Denmark
| | - V Baelum
- Department of Dentistry and Oral Health, Aarhus University, Aarhus, Denmark
| | - S Schlafer
- Department of Dentistry and Oral Health, Aarhus University, Aarhus, Denmark.,Section of Microbiology, Department of Bioscience;Aarhus University, Aarhus, Denmark
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von Ossowski I. Novel Molecular Insights about Lactobacillar Sortase-Dependent Piliation. Int J Mol Sci 2017; 18:ijms18071551. [PMID: 28718795 PMCID: PMC5536039 DOI: 10.3390/ijms18071551] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Revised: 07/11/2017] [Accepted: 07/14/2017] [Indexed: 01/09/2023] Open
Abstract
One of the more conspicuous structural features that punctuate the outer cell surface of certain bacterial Gram-positive genera and species is the sortase-dependent pilus. As these adhesive and variable-length protrusions jut outward from the cell, they provide a physically expedient and useful means for the initial contact between a bacterium and its ecological milieu. The sortase-dependent pilus displays an elongated macromolecular architecture consisting of two to three types of monomeric protein subunits (pilins), each with their own specific function and location, and that are joined together covalently by the transpeptidyl activity of a pilus-specific C-type sortase enzyme. Sortase-dependent pili were first detected among the Gram-positive pathogens and subsequently categorized as an essential virulence factor for host colonization and tissue invasion by these harmful bacteria. However, the sortase-dependent pilus was rebranded as also a niche-adaptation factor after it was revealed that “friendly” Gram-positive commensals exhibit the same kind of pilus structures, which includes two contrasting gut-adapted species from the Lactobacillus genus, allochthonous Lactobacillus rhamnosus and autochthonous Lactobacillus ruminis. This review will highlight and discuss what has been learned from the latest research carried out and published on these lactobacillar pilus types.
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Affiliation(s)
- Ingemar von Ossowski
- Department of Veterinary Biosciences, Faculty of Veterinary Medicine, University of Helsinki, Helsinki FIN-00014, Finland.
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43
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Jiang Y, Ye L, Cui Y, Yang G, Yang W, Wang J, Hu J, Gu W, Shi C, Huang H, Wang C. Effects of Lactobacillus rhamnosus GG on the maturation and differentiation of dendritic cells in rotavirus-infected mice. Benef Microbes 2017; 8:645-656. [PMID: 28670908 DOI: 10.3920/bm2016.0157] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Rotavirus-related diarrhoea is considered one of the most important diseases in field animal production. In addition to the classic vaccine strategy, a number of studies have utilised probiotics, such as Lactobacillus rhamnosus GG (LGG), to prevent rotavirus-induced diarrhoea. Although it has been partially revealed that Toll-like receptors (TLRs) are involved in the LGG-mediated protection against rotavirus infection, the details of the underlying immunologic mechanisms remain largely unknown. In this study, three-to-four-week-old female BALB/c mice were divided into three groups and orally administered phosphate buffered saline (PBS), PBS plus rotavirus or LGG plus rotavirus, respectively. The differentiation and maturation of dendritic cells (DCs) were then determined by FACS, the expression levels of TLR-3 and nuclear factor kappa beta (NF-κB) were evaluated using real time PCR, and the production of inflammatory cytokines in mesenteric lymph nodes (MLNs) were determined by ELISA. The results demonstrated that rotavirus infection significantly increased the percentage of CD11c+CD11b+CD8a- DCs and decreased the percentage of CD11c+CD11b-CD8a+ DCs in MLNs. By contrast, the presence of LGG significantly decreased the percentage of CD11c+CD11b+CD8a- DCs and increased the percentage of CD11c+CD11b-CD8a+ DCs, which indicates that the differentiation of DCs is involved in the protective effects of LGG. Rotavirus infection also resulted in the increased expression of surface markers such as CD40, CD80 and MHC-II in DCs, and the administration of LGG significantly increased the expression level further. The mRNA levels of TLR-3 and NF-κB in the intestine and MLNs were also significantly increased in the presence of rotavirus, which was further increased in the presence of LGG. The production of inflammatory cytokines was also determined, and the results showed that rotavirus caused the increased production of interleukin (IL)-12 and tumour necrosis factor alpha; this effect was further enhanced by LGG. Meanwhile, although rotavirus infection led to the increased production of IL-6 and IL-10, the presence of LGG significantly decreased the mRNA levels of these cytokines. By contrast, rotavirus infection resulted in the decreased production of interferon gamma (IFN-γ), and the administration of LGG significantly increased the levels of IFN-γ. Taken together, the protective effects of LGG were partially due to the modulation of the differentiation and maturation of DCs, the increased production of TLR-3 and NF-κB, and the modulation of inflammatory cytokines.
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Affiliation(s)
- Y Jiang
- 1 College of Animal Science and Technology, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of animal production and product quality safety of Ministry of Education, Jilin Agricultural University, 2888 Xincheng street, Changchun, Jilin Province 130118, China P.R
| | - L Ye
- 1 College of Animal Science and Technology, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of animal production and product quality safety of Ministry of Education, Jilin Agricultural University, 2888 Xincheng street, Changchun, Jilin Province 130118, China P.R
| | - Y Cui
- 1 College of Animal Science and Technology, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of animal production and product quality safety of Ministry of Education, Jilin Agricultural University, 2888 Xincheng street, Changchun, Jilin Province 130118, China P.R
| | - G Yang
- 1 College of Animal Science and Technology, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of animal production and product quality safety of Ministry of Education, Jilin Agricultural University, 2888 Xincheng street, Changchun, Jilin Province 130118, China P.R
| | - W Yang
- 1 College of Animal Science and Technology, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of animal production and product quality safety of Ministry of Education, Jilin Agricultural University, 2888 Xincheng street, Changchun, Jilin Province 130118, China P.R
| | - J Wang
- 1 College of Animal Science and Technology, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of animal production and product quality safety of Ministry of Education, Jilin Agricultural University, 2888 Xincheng street, Changchun, Jilin Province 130118, China P.R
| | - J Hu
- 1 College of Animal Science and Technology, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of animal production and product quality safety of Ministry of Education, Jilin Agricultural University, 2888 Xincheng street, Changchun, Jilin Province 130118, China P.R
| | - W Gu
- 1 College of Animal Science and Technology, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of animal production and product quality safety of Ministry of Education, Jilin Agricultural University, 2888 Xincheng street, Changchun, Jilin Province 130118, China P.R.,2 Shandong Baolai-Leelai Bio-Tech Co., Ltd., Taian, Shandong province, China P.R
| | - C Shi
- 1 College of Animal Science and Technology, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of animal production and product quality safety of Ministry of Education, Jilin Agricultural University, 2888 Xincheng street, Changchun, Jilin Province 130118, China P.R
| | - H Huang
- 1 College of Animal Science and Technology, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of animal production and product quality safety of Ministry of Education, Jilin Agricultural University, 2888 Xincheng street, Changchun, Jilin Province 130118, China P.R
| | - C Wang
- 1 College of Animal Science and Technology, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of animal production and product quality safety of Ministry of Education, Jilin Agricultural University, 2888 Xincheng street, Changchun, Jilin Province 130118, China P.R
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Mishra AK, Megta AK, Palva A, von Ossowski I, Krishnan V. Crystallization and X-ray diffraction analysis of SpaE, a basal pilus protein from the gut-adapted Lactobacillus rhamnosus GG. Acta Crystallogr F Struct Biol Commun 2017; 73:321-327. [PMID: 28580919 PMCID: PMC5458388 DOI: 10.1107/s2053230x17006963] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2017] [Accepted: 05/09/2017] [Indexed: 12/19/2022] Open
Abstract
SpaE is the predicted basal pilin subunit in the sortase-dependent SpaFED pilus from the gut-adapted and commensal Lactobacillus rhamnosus GG. Thus far, structural characterization of the cell-wall-anchoring basal pilins has remained difficult and has been limited to only a few examples from pathogenic genera and species. To gain a further structural understanding of the molecular mechanisms that are involved in the anchoring and assembly of sortase-dependent pili in less harmful bacteria, L. rhamnosus GG SpaE for crystallization was produced by recombinant expression in Escherichia coli. Although several attempts to crystallize the SpaE protein were unsuccessful, trigonal crystals that diffracted to a resolution of 3.1 Å were eventually produced using PEG 3350 as a precipitant and high protein concentrations. Further optimization with a combination of additives led to the generation of SpaE crystals in an orthorhombic form that diffracted to a higher resolution of 1.5 Å. To expedite structure determination by SAD phasing, selenium-substituted (orthorhombic) SpaE crystals were grown and X-ray diffraction data were collected to 1.8 Å resolution.
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Affiliation(s)
- Arjun K. Mishra
- Laboratory of Structural Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, Faridabad 121 001, India
| | - Abhin Kumar Megta
- Laboratory of Structural Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, Faridabad 121 001, India
- School of Biotechnology, KIIT University, Odisha 751 024, India
| | - Airi Palva
- Department of Veterinary Biosciences, University of Helsinki, Helsinki, Finland
| | | | - Vengadesan Krishnan
- Laboratory of Structural Biology, Regional Centre for Biotechnology, NCR Biotech Science Cluster, Faridabad 121 001, India
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Callegan MC, Parkunan SM, Randall CB, Coburn PS, Miller FC, LaGrow AL, Astley RA, Land C, Oh SY, Schneewind O. The role of pili in Bacillus cereus intraocular infection. Exp Eye Res 2017; 159:69-76. [PMID: 28336259 PMCID: PMC5492386 DOI: 10.1016/j.exer.2017.03.007] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Revised: 03/09/2017] [Accepted: 03/16/2017] [Indexed: 12/15/2022]
Abstract
Bacterial endophthalmitis is a potentially blinding intraocular infection. The bacterium Bacillus cereus causes a devastating form of this disease which progresses rapidly, resulting in significant inflammation and loss of vision within a few days. The outer surface of B. cereus incites the intraocular inflammatory response, likely through interactions with innate immune receptors such as TLRs. This study analyzed the role of B. cereus pili, adhesion appendages located on the bacterial surface, in experimental endophthalmitis. To test the hypothesis that the presence of pili contributed to intraocular inflammation and virulence, we analyzed the progress of experimental endophthalmitis in mouse eyes infected with wild type B. cereus (ATCC 14579) or its isogenic pilus-deficient mutant (ΔbcpA-srtD-bcpB or ΔPil). One hundred CFU were injected into the mid-vitreous of one eye of each mouse. Infections were analyzed by quantifying intraocular bacilli and retinal function loss, and by histology from 0 to 12 h postinfection. In vitro growth and hemolytic phenotypes of the infecting strains were also compared. There was no difference in hemolytic activity (1:8 titer), motility, or in vitro growth (p > 0.05, every 2 h, 0-18 h) between wild type B. cereus and the ΔPil mutant. However, infected eyes contained greater numbers of wild type B. cereus than ΔPil during the infection course (p ≤ 0.05, 3-12 h). Eyes infected with wild type B. cereus experienced greater losses in retinal function than eyes infected with the ΔPil mutant, but the differences were not always significant. Eyes infected with ΔPil or wild type B. cereus achieved similar degrees of severe inflammation. The results indicated that the intraocular growth of pilus-deficient B. cereus may have been better controlled, leading to a trend of greater retinal function in eyes infected with the pilus-deficient strain. Although this difference was not enough to significantly alter the severity of the inflammatory response, these results suggest a potential role for pili in protecting B. cereus from clearance during the early stages of endophthalmitis, which is a newly described virulence mechanism for this organism and this infection.
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Affiliation(s)
- Michelle C. Callegan
- Department of Ophthalmology, University of Oklahoma Health Sciences Center, 608 Stanton L. Young Blvd., Oklahoma City, OK 73104, USA,Department of Microbiology and Immunology, University of Oklahoma Health Sciences Center, 950 Stanton L. Young Blvd., Oklahoma City, OK 73104, USA,Dean A. McGee Eye Institute, Oklahoma City Oklahoma USA,Corresponding author: DMEI PA-418, 608 Stanton L. Young Blvd., Oklahoma City, OK 73104, USA. Phone: (405) 271-3674, Fax: (405) 271-8128,
| | - Salai Madhumathi Parkunan
- Department of Microbiology and Immunology, University of Oklahoma Health Sciences Center, 950 Stanton L. Young Blvd., Oklahoma City, OK 73104, USA
| | - C. Blake Randall
- Department of Ophthalmology, University of Oklahoma Health Sciences Center, 608 Stanton L. Young Blvd., Oklahoma City, OK 73104, USA
| | - Phillip S. Coburn
- Department of Ophthalmology, University of Oklahoma Health Sciences Center, 608 Stanton L. Young Blvd., Oklahoma City, OK 73104, USA
| | - Frederick C. Miller
- Department of Cell Biology, University of Oklahoma Health Sciences Center, 950 Stanton L. Young Blvd., Oklahoma City, OK 73104, USA
| | - Austin L. LaGrow
- Department of Ophthalmology, University of Oklahoma Health Sciences Center, 608 Stanton L. Young Blvd., Oklahoma City, OK 73104, USA
| | - Roger A. Astley
- Department of Ophthalmology, University of Oklahoma Health Sciences Center, 608 Stanton L. Young Blvd., Oklahoma City, OK 73104, USA
| | - Craig Land
- Department of Ophthalmology, University of Oklahoma Health Sciences Center, 608 Stanton L. Young Blvd., Oklahoma City, OK 73104, USA
| | - So-Young Oh
- Department of Microbiology, University of Chicago, 920 East 58
| | - Olaf Schneewind
- Department of Microbiology, University of Chicago, 920 East 58
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Abstract
ABSTRACT
Lactobacilli occupy a unique position in human culture and scientific history. Like brewer’s and baker’s yeast, lactobacilli have been associated with food production and preservation for thousands of years.
Lactobacillus
species are used in mixed microbial cultures, such as the classical
Lactobacillus bulgaricus
/
Streptococcus thermophilus
inoculum for yogurt fermentation, or combinations of diverse lactobacilli/yeasts in kefir grains. The association of lactobacilli consumption with greater longevity and improved health formed the basis for developing lactobacilli as probiotics, whose market has exploded worldwide in the past 10 years. The decade that followed the determination of the first genome sequence of a food-associated species,
Lactobacillus plantarum
, saw the application to lactobacilli of a full range of functional genomics methods to identify the genes and gene products that govern their distinctive phenotypes and health associations. In this review, we will briefly remind the reader of the range of beneficial effects attributed to lactobacilli, and then explain the phylogenomic basis for the distribution of these traits across the genus. Recognizing the strain specificity of probiotic effects, we review studies of intraspecific genomic variation and their contributions to identifying probiotic traits. Finally we offer a perspective on classification of lactobacilli into new genera in a scheme that will make attributing probiotic properties to clades, taxa, and species more logical and more robust.
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Genotypic and phenotypic diversity of Lactobacillus rhamnosus clinical isolates, their comparison with strain GG and their recognition by complement system. PLoS One 2017; 12:e0176739. [PMID: 28493885 PMCID: PMC5426626 DOI: 10.1371/journal.pone.0176739] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2017] [Accepted: 04/14/2017] [Indexed: 02/07/2023] Open
Abstract
Lactobacillus rhamnosus strains are ubiquitous in fermented foods, and in the human body where they are commensals naturally present in the normal microbiota composition of gut, vagina and skin. However, in some cases, Lactobacillus spp. have been implicated in bacteremia. The aim of the study was to examine the genomic and immunological properties of 16 clinical blood isolates of L. rhamnosus and to compare them to the well-studied L. rhamnosus probiotic strain GG. Blood cultures from bacteremic patients were collected at the Helsinki University Hospital laboratory in 2005–2011 and L. rhamnosus strains were isolated and characterized by genomic sequencing. The capacity of the L. rhamnosus strains to activate serum complement was studied using immunological assays for complement factor C3a and the terminal pathway complement complex (TCC). Binding of complement regulators factor H and C4bp was also determined using radioligand assays. Furthermore, the isolated strains were evaluated for their ability to aggregate platelets and to form biofilms in vitro. Genomic comparison between the clinical L. rhamnosus strains showed them to be clearly different from L. rhamnosus GG and to cluster in two distinct lineages. All L. rhamnosus strains activated complement in serum and none of them bound complement regulators. Four out of 16 clinical blood isolates induced platelet aggregation and/or formed more biofilms than L. rhamnosus GG, which did not display platelet aggregation activity nor showed strong biofilm formation. These findings suggest that clinical L. rhamnosus isolates show considerable heterogeneity but are clearly different from L. rhamnosus GG at the genomic level. All L. rhamnosus strains are still normally recognized by the human complement system.
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Bene KP, Kavanaugh DW, Leclaire C, Gunning AP, MacKenzie DA, Wittmann A, Young ID, Kawasaki N, Rajnavolgyi E, Juge N. Lactobacillus reuteri Surface Mucus Adhesins Upregulate Inflammatory Responses Through Interactions With Innate C-Type Lectin Receptors. Front Microbiol 2017; 8:321. [PMID: 28326063 PMCID: PMC5339304 DOI: 10.3389/fmicb.2017.00321] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Accepted: 02/15/2017] [Indexed: 12/13/2022] Open
Abstract
The vertebrate gut symbiont Lactobacillus reuteri exhibits strain-specific adhesion and health-promoting properties. Here, we investigated the role of the mucus adhesins, CmbA and MUB, upon interaction of L. reuteri ATCC PTA 6475 and ATCC 53608 strains with human monocyte-derived dendritic cells (moDCs). We showed that mucus adhesins increased the capacity of L. reuteri strains to interact with moDCs and promoted phagocytosis. Our data also indicated that mucus adhesins mediate anti- and pro-inflammatory effects by the induction of interleukin-10 (IL-10), tumor necrosis factor alpha (TNF-α), IL-1β, IL-6, and IL-12 cytokines. L. reuteri ATCC PTA 6475 and ATCC 53608 were exclusively able to induce moDC-mediated Th1 and Th17 immune responses. We further showed that purified MUB activates moDCs and induces Th1 polarized immune responses associated with increased IFNγ production. MUB appeared to mediate these effects via binding to C-type lectin receptors (CLRs), as shown using cell reporter assays. Blocking moDCs with antibodies against DC-specific intercellular adhesion molecule 3-grabbing non-integrin (DC-SIGN) or Dectin-2 did not affect the uptake of the MUB-expressing strain, but reduced the production of TNF-α and IL-6 by moDCs significantly, in line with the Th1 polarizing capacity of moDCs. The direct interaction between MUB and CLRs was further confirmed by atomic force spectroscopy. Taken together these data suggest that mucus adhesins expressed at the cell surface of L. reuteri strains may exert immunoregulatory effects in the gut through modulating the Th1-promoting capacity of DCs upon interaction with C-type lectins.
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Affiliation(s)
- Krisztián P Bene
- Department of Immunology, Faculty of Medicine, University of Debrecen Debrecen, Hungary
| | - Devon W Kavanaugh
- The Gut Health and Food Safety Programme, Institute of Food Research Norwich, UK
| | - Charlotte Leclaire
- The Gut Health and Food Safety Programme, Institute of Food Research Norwich, UK
| | - Allan P Gunning
- The Gut Health and Food Safety Programme, Institute of Food Research Norwich, UK
| | - Donald A MacKenzie
- The Gut Health and Food Safety Programme, Institute of Food Research Norwich, UK
| | | | - Ian D Young
- Food and Health Programme, Institute of Food Research Norwich, UK
| | | | - Eva Rajnavolgyi
- Department of Immunology, Faculty of Medicine, University of Debrecen Debrecen, Hungary
| | - Nathalie Juge
- The Gut Health and Food Safety Programme, Institute of Food Research Norwich, UK
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Arena MP, Capozzi V, Spano G, Fiocco D. The potential of lactic acid bacteria to colonize biotic and abiotic surfaces and the investigation of their interactions and mechanisms. Appl Microbiol Biotechnol 2017; 101:2641-2657. [PMID: 28213732 DOI: 10.1007/s00253-017-8182-z] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Revised: 02/01/2017] [Accepted: 02/03/2017] [Indexed: 12/23/2022]
Abstract
Lactic acid bacteria (LAB) are a heterogeneous group of Gram-positive bacteria that comprise several species which have evolved in close association with humans (food and lifestyle). While their use to ferment food dates back to very ancient times, in the last decades, LAB have attracted much attention for their documented beneficial properties and for potential biomedical applications. Some LAB are commensal that colonize, stably or transiently, host mucosal surfaces, inlcuding the gut, where they may contribute to host health. In this review, we present and discuss the main factors enabling LAB adaptation to such lifestyle, including the gene reprogramming accompanying gut colonization, the specific bacterial components involved in adhesion and interaction with host, and how the gut niche has shaped the genome of intestine-adapted species. Moreover, the capacity of LAB to colonize abiotic surfaces by forming structured communities, i.e., biofilms, is briefly discussed, taking into account the main bacterial and environmental factors involved, particularly in relation to food-related environments. The vast spread of LAB surface-associated communities and the ability to control their occurrence hold great potentials for human health and food safety biotechnologies.
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Affiliation(s)
- Mattia Pia Arena
- Department of Agriculture, Food and Environment Sciences, University of Foggia, via Napoli 25, 71122, Foggia, Italy
| | - Vittorio Capozzi
- Department of Agriculture, Food and Environment Sciences, University of Foggia, via Napoli 25, 71122, Foggia, Italy
| | - Giuseppe Spano
- Department of Agriculture, Food and Environment Sciences, University of Foggia, via Napoli 25, 71122, Foggia, Italy.
| | - Daniela Fiocco
- Department of Clinical and Experimental Medicine, University of Foggia, Viale Pinto 1, 71122, Foggia, Italy
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Impact of Enteric Health and Mucosal Permeability on Skeletal Health and Lameness in Poultry. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017; 1033:185-197. [PMID: 29101656 DOI: 10.1007/978-3-319-66653-2_9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Intestinal barrier leakage and/or altered gut microbial composition has been shown to markedly impact both osteoblast and osteoclast activities, systemically through circulation of gut immune cells and cytokines and locally by causing inflammation of extraintestinal organs such as the liver and bone marrow. Mild cases of heightened intestinal inflammation can cause bone loss in male mice in the absence of any overt nutritional deficiencies or weight loss, which has also been shown in chickens that have been infected with Salmonella. For poultry, ingredients selected for feed formulation have also a significant impact on gut health, intestinal microbiota, bone quality, and performance parameters. Consumption of diets with a high content of soluble non-starch polysaccharides (NSP) can affect bone quality parameters by reducing the amount of conjugated bile acids in the intestine, therefore diminishing the absorption of fat-soluble vitamins such as vitamin D and minerals like calcium and phosphorus. Recent enteric inflammation studies have shown that high NSP-containing diets have effects on intestinal viscosity, bone mineral content, and breaking strength, along with increased fluorescein isothiocyanate-dextran (FITC-d) leakage. Other skeletal diseases, such as bacterial chondronecrosis with osteomyelitis and enterococcal spondylitis, have a microbial component that is associated with increased mucosal permeability of the gut. Probiotics targeted toward control of enteric inflammation, either created through infectious disease or poor diet, may serve as a strategy for control of predisposing factors that lead to bone disorders.
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