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Hao H, Nie Z, Wu Y, Liu Z, Luo F, Deng F, Zhao L. Probiotic Characteristics and Anti-Inflammatory Effects of Limosilactobacillus fermentum 664 Isolated from Chinese Fermented Pickles. Antioxidants (Basel) 2024; 13:703. [PMID: 38929142 PMCID: PMC11200572 DOI: 10.3390/antiox13060703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2024] [Revised: 06/02/2024] [Accepted: 06/05/2024] [Indexed: 06/28/2024] Open
Abstract
Limosilactobacillus fermentum (L. fermentum) is widely used in industrial food fermentations, and its probiotic and health-promoting roles attracted much attention in the past decades. In this work, the probiotic potential of L. fermentum 664 isolated from Chinese fermented pickles was assessed. In addition, the anti-inflammatory properties and mechanisms were investigated using lipopolysaccharide (LPS)-stimulated RAW264.7 cells. Results indicated that L. fermentum 664 demonstrated excellent acid and bile salt tolerance, adhesion capability, antimicrobial activity, and safety profile. L. fermentum 664 downregulated the release of inflammatory mediators, including tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6), interleukin-1β (IL-1β), and cyclooxygenase-2 (COX-2) stimulated with LPS. Moreover, L fermentum 664 inhibited the nuclear translocation of the nuclear factor κB (NF-κB) and the activation of mitogen-activated protein kinases (MAPKs) induced by LPS. This action was associated with a reduction in reactive oxygen species (ROS) levels and an enhanced expression of heme oxygenase-1 (HO-1) protein. Additionally, whole genome sequencing indicated that L. fermentum 664 contained genes that encode proteins with antioxidant and anti-inflammatory functions, including Cytochrome bd ubiquinol oxidase subunit I (CydA), Cytochrome bd ubiquinol oxidase subunit II (CydB), and NAD(P)H dehydrogenase quinone 1 (NQO1). In conclusion, our study suggested that L. fermentum 664 has the potential to become a probiotic and might be a promising strategy for the prevention of inflammation.
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Affiliation(s)
| | | | | | | | | | - Fangming Deng
- College of Food Science and Technology, Hunan Agricultural University, Changsha 410128, China; (H.H.); (Z.N.); (Y.W.)
| | - Lingyan Zhao
- College of Food Science and Technology, Hunan Agricultural University, Changsha 410128, China; (H.H.); (Z.N.); (Y.W.)
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2
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Huang R, Wu F, Zhou Q, Wei W, Yue J, Xiao B, Luo Z. Lactobacillus and intestinal diseases: mechanisms of action and clinical applications. Microbiol Res 2022; 260:127019. [DOI: 10.1016/j.micres.2022.127019] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 03/27/2022] [Accepted: 03/29/2022] [Indexed: 12/12/2022]
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3
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Chen Y, Li R, Chang Q, Dong Z, Yang H, Xu C. Lactobacillus bulgaricus or Lactobacillus rhamnosus Suppresses NF-κB Signaling Pathway and Protects against AFB₁-Induced Hepatitis: A Novel Potential Preventive Strategy for Aflatoxicosis? Toxins (Basel) 2019; 11:E17. [PMID: 30621122 PMCID: PMC6356522 DOI: 10.3390/toxins11010017] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Revised: 12/22/2018] [Accepted: 12/24/2018] [Indexed: 12/11/2022] Open
Abstract
Aflatoxin B₁ (AFB₁), a mycotoxin found in food and feed, is immunotoxic to animals and poses significant threat to the food industry and animal production. The primary target of AFB₁ is the liver. To overcome aflatoxin toxicity, probiotic-mediated detoxification has been proposed. In the present study, to investigate the protective effects and molecular mechanisms of Lactobacillus bulgaricus or Lactobacillus rhamnosus against liver inflammatory responses to AFB₁, mice were administered with AFB₁ (300 μg/kg) and/or Lactobacillus intragastrically for 8 weeks. AML12 cells were cultured and treated with AFB₁, BAY 11-7082 (an NF-κB inhibitor), and different concentrations of L. bulgaricus or L. rhamnosus. The body weight, liver index, histopathological changes, biochemical indices, cytokines, cytotoxicity, and activation of the NF-κB signaling pathway were measured. AFB₁ exposure caused changes in liver histopathology and biochemical functions, altered inflammatory response, and activated the NF-κB pathway. Supplementation of L. bulgaricus or L. rhamnosus significantly prevented AFB₁-induced liver injury and alleviated histopathological changes and inflammatory response by decreasing NF-κB p65 expression. The results of in vitro experiments revealed that L.rhamnosus evidently protected against AFB₁-induced inflammatory response and decreased NF-κB p65 expression when compared with L. bulgaricus. These findings indicated that AFB₁ exposure can cause inflammatory response by inducing hepatic injury, and supplementation of L. bulgaricus or L. rhamnosus can produce significant protective effect against AFB₁-induced liver damage and inflammatory response by regulating the activation of the NF-κB signaling pathway.
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Affiliation(s)
- Yuanyuan Chen
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing High-Tech Industrial Development Zone, Daqing 163319, China.
| | - Ruirui Li
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing High-Tech Industrial Development Zone, Daqing 163319, China.
| | - Qiaocheng Chang
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing High-Tech Industrial Development Zone, Daqing 163319, China.
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Fengtai District, Beijing 100071, China.
| | - Zhihao Dong
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing High-Tech Industrial Development Zone, Daqing 163319, China.
| | - Huanmin Yang
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing High-Tech Industrial Development Zone, Daqing 163319, China.
| | - Chuang Xu
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing High-Tech Industrial Development Zone, Daqing 163319, China.
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4
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Gentle SJ, Lal CV. Predicting BPD: Lessons Learned From the Airway Microbiome of Preterm Infants. Front Pediatr 2019; 7:564. [PMID: 32117822 PMCID: PMC7011099 DOI: 10.3389/fped.2019.00564] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2019] [Accepted: 12/24/2019] [Indexed: 12/19/2022] Open
Abstract
Bronchopulmonary dysplasia (BPD) is the chronic lung disease of prematurity with an operational definition, various different clinical phenotypes, and a complex, multifactorial etiology. Newer unbiased systems biology approaches have identified various "omic" factors associated with the pathogenesis and prediction of BPD. Recent microbi "omic" studies have discovered that airways of newborns harbor a low biomass but distinct microbiome signature as early as at the time of birth. This early airway microbiome may serve to prime the host immune system and may play a role in modulating the infant's future susceptibility to severe BPD development. Temporal changes are observed in airway microbiome of preterm infants from birth to the diagnosis of BPD, with an overall decrease in bacterial diversity, and development of a relative dysbiosis marked by increased Gammaproteobacteria and decreased Lactobacilli abundance. This review will summarize previous investigations of the airway microbiome in preterm infants, appraise the utility of using the airway microbiome to predict BPD development, discuss possible molecular mechanisms involved, and speculate on future microbiome-mediated therapeutics for BPD.
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Affiliation(s)
- Samuel J Gentle
- Department of Pediatrics, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Charitharth Vivek Lal
- Department of Pediatrics, University of Alabama at Birmingham, Birmingham, AL, United States
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5
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Two-step production of anti-inflammatory soluble factor by Lactobacillus reuteri CRL 1098. PLoS One 2018; 13:e0200426. [PMID: 29979794 PMCID: PMC6034873 DOI: 10.1371/journal.pone.0200426] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Accepted: 06/26/2018] [Indexed: 01/28/2023] Open
Abstract
We have demonstrated previously that a soluble factor (LrS) produced by Lactobacillus (L.) reuteri CRL 1098 modulates the inflammatory response triggered by lipopolysaccharide. In this study, the production of LrS by L. reuteri CRL 1098 was realized through two steps: i) bacterial biomass production, ii) LrS production, where the bacterial biomass was able to live but did not proliferate. Therefore, the simultaneous evaluation of the effect of different factors on the growth and LrS production was performed. Biomass production was found to be dependent mainly on culture medium, while LrS production with anti-inflammatory activity depended on culture conditions of the biomass such as pH, agitation and growth phase. The L. reuteri CRL 1098 biomass and LrS production in the optimized culture media designed for this work reduced the complete process cost by approximately 95%, respectively to laboratory scale cost.
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6
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Jatzlauk G, Bartel S, Heine H, Schloter M, Krauss-Etschmann S. Influences of environmental bacteria and their metabolites on allergies, asthma, and host microbiota. Allergy 2017; 72:1859-1867. [PMID: 28600901 DOI: 10.1111/all.13220] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/03/2017] [Indexed: 02/07/2023]
Abstract
The prevalence of allergic diseases and asthma has dramatically increased over the last decades, resulting in a high burden for patients and healthcare systems. Thus, there is an unmet need to develop preventative strategies for these diseases. Epidemiological studies show that reduced exposure to environmental bacteria in early life (eg, birth by cesarean section, being formula-fed, growing up in an urban environment or with less contact to various persons) is associated with an increased risk to develop allergies and asthma later in life. Conversely, a reduced risk for asthma is consistently found in children growing up on traditional farms, thereby being exposed to a wide spectrum of microbes. However, clinical studies with bacteria to prevent allergic diseases are still rare and to some extent contradicting. A detailed mechanistic understanding of how environmental microbes influence the development of the human microbiome and the immune system is important to enable the development of novel preventative approaches that are based on the early modulation of the host microbiota and immunity. In this mini-review, we summarize current knowledge and experimental evidence for the potential of bacteria and their metabolites to be used for the prevention of asthma and allergic diseases.
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Affiliation(s)
- G. Jatzlauk
- Division of Early Life Origins of Chronic Lung Diseases; Priority Area Asthma and Allergy; Research Center Borstel; Leibniz-Center for Medicine and Biosciences; Member of the Airway Research Center North (ARCN); German Center for Lung Research (DZL); Borstel Germany
| | - S. Bartel
- Division of Early Life Origins of Chronic Lung Diseases; Priority Area Asthma and Allergy; Research Center Borstel; Leibniz-Center for Medicine and Biosciences; Member of the Airway Research Center North (ARCN); German Center for Lung Research (DZL); Borstel Germany
| | - H. Heine
- Division of Innate Immunity; Priority Area Asthma and Allergy; Research Center Borstel; Leibniz-Center for Medicine and Biosciences; Member of the Airway Research Center North (ARCN); German Center for Lung Research (DZL); Borstel Germany
| | - M. Schloter
- Research Unit Environmental Genomics; Helmholtz Zentrum München; Oberschleißheim Germany
| | - S. Krauss-Etschmann
- Division of Early Life Origins of Chronic Lung Diseases; Priority Area Asthma and Allergy; Research Center Borstel; Leibniz-Center for Medicine and Biosciences; Member of the Airway Research Center North (ARCN); German Center for Lung Research (DZL); Borstel Germany
- Institute for Experimental Medicine; Christian-Albrechts-Universität zu Kiel; Kiel Germany
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7
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Harbige LS, Pinto E, Allgrove J, Thomas LV. Immune Response of Healthy Adults to the Ingested Probiotic Lactobacillus casei Shirota. Scand J Immunol 2017; 84:353-364. [PMID: 27718254 DOI: 10.1111/sji.12495] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Accepted: 10/04/2016] [Indexed: 12/18/2022]
Abstract
Daily ingestion of a probiotic drink containing Lactobacillus casei Shirota (LcS; 1.3 × 1010 live cells) by healthy adults for (1) 4-week LcS, (2) 6-week discontinuation of LcS and (3) a final 4 weeks of LcS was investigated. There was a significant increase in expression of the T cell activation marker CD3+ CD69+ in ex vivo unstimulated blood cells at weeks 10 and 14, and there was a significant increase in the NK cell marker CD3+ CD16/56+ in ex vivo unstimulated blood cells at weeks 4, 10 and 14. Expression of the NK cell activation marker CD16/56+ CD69+ in ex vivo unstimulated blood cells was 62% higher at week 10 and 74% higher at week 14. Intracellular staining of IL-4 in ex vivo unstimulated and PMA-/ionomycin-stimulated CD3+ β7+ integrin blood cells was significantly lower at weeks 10 and 14. Intracellular staining of IL-12 in ex vivo unstimulated and LPS-stimulated CD14+ blood cells was significantly lower at weeks 4, 10 and 14. Intracellular staining of TNF-α in LPS-stimulated CD14+ blood cells was significantly lower at weeks 4, 10 and 14. Mucosal salivary IFN-γ, IgA1 and IgA2 concentrations were significantly higher at week 14, but LcS did not affect systemic circulating influenza A-specific IgA or IgG and tetanus-specific IgG antibody levels. In addition to the decrease in CD3+ β7+ integrin cell IL-4 and a reduced CD14+ cell pro-inflammatory cytokine profile, at week 14 increased expression of activation markers on circulating T cells and NK cells and higher mucosal salivary IgA1 and IgA2 concentration indicated a secondary boosting effect of LcS.
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Affiliation(s)
- L S Harbige
- Department of Life Sciences, Faculty of Engineering and Science, University of Greenwich at Medway, Chatham Maritime, Kent, UK
| | - E Pinto
- Department of Life Sciences, Faculty of Engineering and Science, University of Greenwich at Medway, Chatham Maritime, Kent, UK
| | - J Allgrove
- Faculty of Science, Engineering and Computing, Kingston University, Surrey, UK
| | - L V Thomas
- Yakult UK Ltd, Anteros, Odyssey Business Park, South Ruislip, Middlesex, UK
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8
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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: 37] [Impact Index Per Article: 5.3] [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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9
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Erdman SE, Poutahidis T. Microbes and Oxytocin: Benefits for Host Physiology and Behavior. INTERNATIONAL REVIEW OF NEUROBIOLOGY 2016; 131:91-126. [PMID: 27793228 DOI: 10.1016/bs.irn.2016.07.004] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
It is now understood that gut bacteria exert effects beyond the local boundaries of the gastrointestinal tract to include distant tissues and overall health. Prototype probiotic bacterium Lactobacillus reuteri has been found to upregulate hormone oxytocin and systemic immune responses to achieve a wide array of health benefits involving wound healing, mental health, metabolism, and myoskeletal maintenance. Together these display that the gut microbiome and host animal interact via immune-endocrine-brain signaling networks. Such findings provide novel therapeutic strategies to stimulate powerful homeostatic pathways and genetic programs, stemming from the coevolution of mammals and their microbiome.
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Affiliation(s)
- S E Erdman
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, MA, United States; Aristotle University of Thessaloniki, Thessaloniki, Greece.
| | - T Poutahidis
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, MA, United States; Aristotle University of Thessaloniki, Thessaloniki, Greece
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10
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Thomas CM, Saulnier DMA, Spinler JK, Hemarajata P, Gao C, Jones SE, Grimm A, Balderas MA, Burstein MD, Morra C, Roeth D, Kalkum M, Versalovic J. FolC2-mediated folate metabolism contributes to suppression of inflammation by probiotic Lactobacillus reuteri. Microbiologyopen 2016; 5:802-818. [PMID: 27353144 PMCID: PMC5061717 DOI: 10.1002/mbo3.371] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2015] [Revised: 03/20/2016] [Accepted: 03/30/2016] [Indexed: 12/16/2022] Open
Abstract
Bacterial‐derived compounds from the intestinal microbiome modulate host mucosal immunity. Identification and mechanistic studies of these compounds provide insights into host–microbial mutualism. Specific Lactobacillus reuteri strains suppress production of the proinflammatory cytokine, tumor necrosis factor (TNF), and are protective in a mouse model of colitis. Human‐derived L. reuteri strain ATCC PTA 6475 suppresses intestinal inflammation and produces 5,10‐methenyltetrahydrofolic acid polyglutamates. Insertional mutagenesis identified the bifunctional dihydrofolate synthase/folylpolyglutamate synthase type 2 (folC2) gene as essential for 5,10‐methenyltetrahydrofolic acid polyglutamate biosynthesis, as well as for suppression of TNF production by activated human monocytes, and for the anti‐inflammatory effect of L. reuteri 6475 in a trinitrobenzene sulfonic acid‐induced mouse model of acute colitis. In contrast, folC encodes the enzyme responsible for folate polyglutamylation but does not impact TNF suppression by L. reuteri. Comparative transcriptomics between wild‐type and mutant L. reuteri strains revealed additional genes involved in immunomodulation, including previously identified hdc genes involved in histidine to histamine conversion. The folC2 mutant yielded diminished hdc gene cluster expression and diminished histamine production, suggesting a link between folate and histadine/histamine metabolism. The identification of genes and gene networks regulating production of bacterial‐derived immunoregulatory molecules may lead to improved anti‐inflammatory strategies for digestive diseases.
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Affiliation(s)
- Carissa M Thomas
- Integrative Molecular and Biomedical Sciences (IMBS), Baylor College of Medicine, One Baylor Plaza, Houston, Texas, 77030
| | - Delphine M A Saulnier
- Department of Pathology & Immunology, Baylor College of Medicine, Houston, Texas.,Department of Pathology, Texas Children's Hospital, 1102 Bates Ave, Houston, Texas, 77030
| | - Jennifer K Spinler
- Department of Pathology & Immunology, Baylor College of Medicine, Houston, Texas.,Department of Pathology, Texas Children's Hospital, 1102 Bates Ave, Houston, Texas, 77030
| | - Peera Hemarajata
- Department of Molecular Virology and Microbiology, Baylor College of Medicine, Houston, Texas
| | - Chunxu Gao
- Department of Pathology & Immunology, Baylor College of Medicine, Houston, Texas.,Department of Pathology, Texas Children's Hospital, 1102 Bates Ave, Houston, Texas, 77030
| | - Sara E Jones
- Integrative Molecular and Biomedical Sciences (IMBS), Baylor College of Medicine, One Baylor Plaza, Houston, Texas, 77030
| | - Ashley Grimm
- Department of Pathology & Immunology, Baylor College of Medicine, Houston, Texas.,Department of Pathology, Texas Children's Hospital, 1102 Bates Ave, Houston, Texas, 77030
| | - Miriam A Balderas
- Department of Pathology & Immunology, Baylor College of Medicine, Houston, Texas.,Department of Pathology, Texas Children's Hospital, 1102 Bates Ave, Houston, Texas, 77030
| | - Matthew D Burstein
- Structural and Computational Biology and Molecular Biophysics Graduate Program, Baylor College of Medicine, Houston, Texas
| | - Christina Morra
- Integrative Molecular and Biomedical Sciences (IMBS), Baylor College of Medicine, One Baylor Plaza, Houston, Texas, 77030.,Department of Pathology, Texas Children's Hospital, 1102 Bates Ave, Houston, Texas, 77030
| | - Daniel Roeth
- Department of Molecular Immunology, Beckman Research Institute of the City of Hope, 1500 E Duarte Rd., Duarte, California, 91010
| | - Markus Kalkum
- Department of Molecular Immunology, Beckman Research Institute of the City of Hope, 1500 E Duarte Rd., Duarte, California, 91010
| | - James Versalovic
- Department of Pathology & Immunology, Baylor College of Medicine, Houston, Texas. .,Department of Pathology, Texas Children's Hospital, 1102 Bates Ave, Houston, Texas, 77030.
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11
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Ashrafi F, Fallah Mehrabadi J, Siadat SD, Aghasadeghi MR. Expression and Purification of the Uropathogenic Escherichia coli PapG Protein and its Surface Absorption on Lactobacillus reuteri: Implications for Surface Display System Vaccines. Jundishapur J Microbiol 2015; 8:e25595. [PMID: 26487922 PMCID: PMC4609037 DOI: 10.5812/jjm.25595] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Revised: 12/23/2014] [Accepted: 01/24/2015] [Indexed: 11/16/2022] Open
Abstract
Background: Uropathogenic Escherichia coli (UPEC) is one of the most common bacteria that can cause urinary tract infections (UTIs). Unfortunately, no human vaccine against UTIs has been developed. Therefore, it is necessary to develop an efficient and safe vaccine that is able to induce mucosal and systemic immune responses. The use of lactic acid bacteria as a delivery system is a promising method to induce the immune system. Objectives: The aim of this study was to establish Lactobacillus reuteri harboring the E. coli PapG antigen on its surface. Materials and Methods: In this study, the gene encoding PapG was fused to the AcmA gene (which encodes an anchor protein in Lactobacillus) and cloned into the pEX A vector. The PapG.AcmA fusion gene was digested with BamHI and NdeI and sub-cloned into the pET21a expression vector at the digestion sites. Subsequently, the recombinant plasmids (pET21a-PapG.AcmA and pET21a-PapG) were transformed into the E. coli Origami strain using the calcium chloride method and the fusion protein was expressed under 1 mM IPTG induction. The expression of the fusion protein was confirmed by sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) and western blotting. Purification of the PapG and PapG.AcmA proteins was carried out using a Ni-NTA column, and surface adsorption was estimated on Lactobacillus. Finally, surface localization of the fusion protein was verified by an enzyme-linked immunosorbent assay (ELISA). Results: The PapG.AcmA fusion was successfully sub-cloned in the pET21a expression vector. The expression of PapG and PapG.AcmA proteins in the E. coli Origami strain was indicated as protein bands in SDS-PAGE and confirmed by western blotting. In addition, the fusion protein was displayed on the surface of L. reuteri. Conclusions: In conclusion, we developed a method to express the PapG.AcmA protein on the surface of Lactobacillus. This is the first report on the successful application of lactic acid bacteria displaying the PapG.AcmA fusion protein. It will be interesting to determine the immune responses against the PapG protein in near future using this surface display strategy.
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Affiliation(s)
- Fatemeh Ashrafi
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, IR Iran
| | - Jalil Fallah Mehrabadi
- Department of Biology, School of Basic Science, University of Qom, Qom, IR Iran
- Corresponding author: Jalil Fallah Mehrabadi, Department of Biology, School of Basic Science, University of Qom, Qom, IR Iran. Tel: +98-2532103000, E-mail:
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12
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Griet M, Zelaya H, Mateos MV, Salva S, Juarez GE, de Valdez GF, Villena J, Salvador GA, Rodriguez AV. Soluble factors from Lactobacillus reuteri CRL1098 have anti-inflammatory effects in acute lung injury induced by lipopolysaccharide in mice. PLoS One 2014; 9:e110027. [PMID: 25329163 PMCID: PMC4201513 DOI: 10.1371/journal.pone.0110027] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2014] [Accepted: 09/09/2014] [Indexed: 12/12/2022] Open
Abstract
We have previously demonstrated that Lactobacillus reuteri CRL1098 soluble factors were able to reduce TNF-α production by human peripheral blood mononuclear cells. The aims of this study were to determine whether L. reuteri CRL1098 soluble factors were able to modulate in vitro the inflammatory response triggered by LPS in murine macrophages, to gain insight into the molecular mechanisms involved in the immunoregulatory effect, and to evaluate in vivo its capacity to exert anti-inflammatory actions in acute lung injury induced by LPS in mice. In vitro assays demonstrated that L. reuteri CRL1098 soluble factors significantly reduced the production of pro-inflammatory mediators (NO, COX-2, and Hsp70) and pro-inflammatory cytokines (TNF-α, and IL-6) caused by the stimulation of macrophages with LPS. NF-kB and PI3K inhibition by L. reuteri CRL1098 soluble factors contributed to these inhibitory effects. Inhibition of PI3K/Akt pathway and the diminished expression of CD14 could be involved in the immunoregulatory effect. In addition, our in vivo data proved that the LPS-induced secretion of the pro-inflammatory cytokines, inflammatory cells recruitment to the airways and inflammatory lung tissue damage were reduced in L. reuteri CRL1098 soluble factors treated mice, providing a new way to reduce excessive pulmonary inflammation.
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Affiliation(s)
- Milagros Griet
- Centro de Referencia para Lactobacilos (CERELA-CONICET), San Miguel de Tucumán, Tucumán, Argentina
| | - Hortensia Zelaya
- Centro de Referencia para Lactobacilos (CERELA-CONICET), San Miguel de Tucumán, Tucumán, Argentina
| | - Melina Valeria Mateos
- Instituto de Investigaciones Bioquímicas de Bahía Blanca (INIBIBB), Bahía Blanca, Buenos Aires, Argentina
| | - Susana Salva
- Centro de Referencia para Lactobacilos (CERELA-CONICET), San Miguel de Tucumán, Tucumán, Argentina
| | - Guillermo Esteban Juarez
- Centro de Referencia para Lactobacilos (CERELA-CONICET), San Miguel de Tucumán, Tucumán, Argentina
| | - Graciela Font de Valdez
- Centro de Referencia para Lactobacilos (CERELA-CONICET), San Miguel de Tucumán, Tucumán, Argentina
| | - Julio Villena
- Centro de Referencia para Lactobacilos (CERELA-CONICET), San Miguel de Tucumán, Tucumán, Argentina
| | | | - Ana Virginia Rodriguez
- Centro de Referencia para Lactobacilos (CERELA-CONICET), San Miguel de Tucumán, Tucumán, Argentina
- * E-mail:
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Kemgang TS, Kapila S, Shanmugam VP, Kapila R. Cross-talk between probiotic lactobacilli and host immune system. J Appl Microbiol 2014; 117:303-19. [PMID: 24738909 DOI: 10.1111/jam.12521] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2014] [Revised: 04/02/2014] [Accepted: 04/08/2014] [Indexed: 12/14/2022]
Abstract
The mechanism by which probiotic lactobacilli affect the immune system is strain specific. As the immune system is a multicompartmental system, each strain has its way to interact with it and induce a visible and quantifiable effect. This review summarizes the interplay existing between the host immune system and probiotic lactobacilli, that is, with emphasis on lactobacilli as a prototype probiotic genus. Several aspects including the bacterial-host cross-talk with the mucosal and systemic immune system are presented, as well as short sections on the competing effect towards pathogenic bacteria and their uses as delivery vehicle for antigens.
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Affiliation(s)
- T S Kemgang
- Department of Animal Biochemistry, National Dairy Research Institute, Karnal, Haryana, India; Department of Food Science/Nutrition, National School of AgroIndustrial Sciences, University of Ngaoundere, Ngaoundere, Adamaoua, Cameroon
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Jones ML, Martoni CJ, Ganopolsky JG, Labbé A, Prakash S. The human microbiome and bile acid metabolism: dysbiosis, dysmetabolism, disease and intervention. Expert Opin Biol Ther 2014; 14:467-82. [PMID: 24479734 DOI: 10.1517/14712598.2014.880420] [Citation(s) in RCA: 102] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
INTRODUCTION Recent evidence indicates that the human gut microbiome plays a significant role in health and disease. Dysbiosis, defined as a pathological imbalance in a microbial community, is becoming increasingly appreciated as a 'central environmental factor' that is both associated with complex phenotypes and affected by host genetics, diet and antibiotic use. More recently, a link has been established between the dysmetabolism of bile acids (BAs) in the gut to dysbiosis. AREAS COVERED BAs, which are transformed by the gut microbiota, have been shown to regulate intestinal homeostasis and are recognized as signaling molecules in a wide range of metabolic processes. This review will examine the connection between BA metabolism as it relates to the gut microbiome and its implication in health and disease. EXPERT OPINION A disrupted gut microbiome, including a reduction of bile salt hydrolase (BSH)-active bacteria, can significantly impair the metabolism of BAs and may result in an inability to maintain glucose homeostasis as well as normal cholesterol breakdown and excretion. To better understand the link between dysbiosis, BA dysmetabolism and chronic degenerative disease, large-scale metagenomic sequencing studies, metatranscriptomics, metaproteomics and metabolomics should continue to catalog functional diversity in the gastrointestinal tract of both healthy and diseased populations. Further, BSH-active probiotics should continue to be explored as treatment options to help restore metabolic levels.
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Affiliation(s)
- Mitchell L Jones
- McGill University, Artificial Cells and Organs Research Centre, Department of Biomedical Engineering and Physiology, Biomedical Technology and Cell Therapy Research Laboratory, Faculty of Medicine , 3775 University Street, Montreal, Quebec, H3A2B4 , Canada +1 514 398 3676 ; +1 514 398 7461 ;
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Juarez GE, Villena J, Salva S, de Valdez GF, Rodriguez AV. Lactobacillus reuteri CRL1101 beneficially modulate lipopolysaccharide-mediated inflammatory response in a mouse model of endotoxic shock. J Funct Foods 2013. [DOI: 10.1016/j.jff.2013.08.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
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