1
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Li X, Li J, Yuan H, Chen Y, Li S, Jiang S, Zha Xi Y, Zhang G, Lu J. Effect of supplementation with Glycyrrhiza uralensis extract and Lactobacillus acidophilus on growth performance and intestinal health in broiler chickens. Front Vet Sci 2024; 11:1436807. [PMID: 39091388 PMCID: PMC11291472 DOI: 10.3389/fvets.2024.1436807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2024] [Accepted: 07/08/2024] [Indexed: 08/04/2024] Open
Abstract
Intestinal microbiota community is an important factor affecting the nutritional and health status of poultry, and its balance is crucial for improving the overall health of poultry. The study aimed to investigate the effect of dietary supplementation with Glycyrrhiza uralensis extract (GUE), Lactobacillus acidophilus (Lac) and their combination (GL) on growth performance and intestinal health in broilers in an 84-day feeding experiment. Supplementary 0.1% GUE and 4.5×107 CFU/g Lac significantly increased average daily gain (ADG), and GL (0.1% GUE and 4.5×107 CFU/g Lac) increased ADG and average daily feed intake (ADFI), and decreased feed conversion rate (FCR) in broilers aged 29 to 84 d and 1 to 84 d. Dietary GUE, Lac and GL increased the superoxide dismutase (SOD) and glutathione peroxidase (GSH-PX) activity and decreased Malondialdehyde (MDA) content in the jejunum mucosa of broilers, and increased secretory IgA (sIgA) content in broilers at 84 d. Moreover, GUE, Lac and GL increased cecal microbial richness and diversity, and modulated microbial community composition. Both GUE and Lac reduced the harmful bacteria Epsilonbacteraeota, Helicobacter, and H. pullorum at 28 d and Proteobacteria, Escherichia, and E. coli at 84 d, while Lac and GL increased beneficial bacteria Lactobacillus and L. gallinarum at 28 d. Compared with individual supplementation, GL markedly increased the SOD activity and the sIgA content, and reduced Helicobacter and Helicobacter pullorum. In conclusion, GUE and Lactobacillus acidophilus as feed additives benefit growth performance and intestinal health, and their combined use shows an even more positive effect in broilers.
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Affiliation(s)
- Ximei Li
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou, China
| | - Jiawei Li
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou, China
| | - Haotian Yuan
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou, China
| | - Yan Chen
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou, China
| | - Shuaibing Li
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou, China
| | - Susu Jiang
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou, China
- Department of Animal Science and Technology, Gansu Agriculture Technology College, Lanzhou, China
| | - Yingpai Zha Xi
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou, China
| | - Guohua Zhang
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou, China
| | - Jianxiong Lu
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou, China
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2
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Göritzer K, Groppelli E, Grünwald-Gruber C, Figl R, Ni F, Hu H, Li Y, Liu Y, Hu Q, Puligedda RD, Jung JW, Strasser R, Dessain S, Ma JKC. Recombinant neutralizing secretory IgA antibodies for preventing mucosal acquisition and transmission of SARS-CoV-2. Mol Ther 2024; 32:689-703. [PMID: 38268188 PMCID: PMC10928148 DOI: 10.1016/j.ymthe.2024.01.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 12/16/2023] [Accepted: 01/18/2024] [Indexed: 01/26/2024] Open
Abstract
Passive delivery of antibodies to mucosal sites may be a valuable adjunct to COVID-19 vaccination to prevent infection, treat viral carriage, or block transmission. Neutralizing monoclonal IgG antibodies are already approved for systemic delivery, and several clinical trials have been reported for delivery to mucosal sites where SARS-CoV-2 resides and replicates in early infection. However, secretory IgA may be preferred because the polymeric complex is adapted for the harsh, unstable external mucosal environment. Here, we investigated the feasibility of producing neutralizing monoclonal IgA antibodies against SARS-CoV-2. We engineered two class-switched mAbs that express well as monomeric and secretory IgA (SIgA) variants with high antigen-binding affinities and increased stability in mucosal secretions compared to their IgG counterparts. SIgAs had stronger virus neutralization activities than IgG mAbs and were protective against SARS-CoV-2 infection in an in vivo murine model. Furthermore, SIgA1 can be aerosolized for topical delivery using a mesh nebulizer. Our findings provide a persuasive case for developing recombinant SIgAs for mucosal application as a new tool in the fight against COVID-19.
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Affiliation(s)
- Kathrin Göritzer
- Hotung Molecular Immunology Unit, St. George's University of London, London SW17 0RE, UK.
| | - Elisabetta Groppelli
- Institute for Infection and Immunity, St. George's University of London, London SW17 0RE, UK
| | - Clemens Grünwald-Gruber
- Core Facility Mass Spectrometry, University of Natural Resources and Life Sciences, 1190 Vienna, Austria
| | - Rudolf Figl
- Core Facility Mass Spectrometry, University of Natural Resources and Life Sciences, 1190 Vienna, Austria
| | - Fengfeng Ni
- State Key Laboratory of Virology, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan 430071, China
| | - Huimin Hu
- State Key Laboratory of Virology, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan 430071, China
| | - Yuncheng Li
- State Key Laboratory of Virology, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan 430071, China
| | - Yalan Liu
- State Key Laboratory of Virology, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan 430071, China
| | - Qinxue Hu
- Institute for Infection and Immunity, St. George's University of London, London SW17 0RE, UK; State Key Laboratory of Virology, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan 430071, China
| | | | - Jae-Wan Jung
- Department of Biochemistry and Metabolism, John Innes Centre, Norwich Research Park, Norwich NR4 7UH, UK
| | - Richard Strasser
- Department of Applied Genetics and Cell Biology, University of Natural Resources and Life Sciences, 1190 Vienna, Austria
| | - Scott Dessain
- Lankenau Institute for Medical Research, Wynnewood, PA 19096, USA
| | - Julian K-C Ma
- Hotung Molecular Immunology Unit, St. George's University of London, London SW17 0RE, UK.
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3
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Shrivastava S, Agnememel AB, Ndungo E, Islam D, Liang Y, Frenck RW, Pasetti MF. Oral immunization with Shigella sonnei WRSs2 and WRSs3 vaccine strains elicits systemic and mucosal antibodies with functional anti-microbial activity. mSphere 2024; 9:e0041923. [PMID: 38132716 PMCID: PMC10826362 DOI: 10.1128/msphere.00419-23] [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: 07/26/2023] [Accepted: 11/29/2023] [Indexed: 12/23/2023] Open
Abstract
Shigella causes bacillary dysentery and is responsible for a high burden of disease globally. Several studies have emphasized the value of functional antibody activity to understand Shigella immunity and correlates of protection. The anti-microbial function of local (mucosal) antibodies and their contribution to preventing Shigella infection remain unknown. The goal of this study was to identify the functional humoral immune effectors elicited by two Shigella sonnei live oral vaccine candidates, WRSs2 and WRSs3. Complement-dependent bactericidal [serum bactericidal antibody (SBA)/bactericidal antibody (BA)] and opsonophagocytic killing antibody (OPKA) activity were determined in sera and stool extracts as indicators of systemic and local anti-microbial immunity. High levels of SBA/BA and OPKA were detected in serum as well as in fecal extracts from volunteers who received a single dose of WRSs2 and WRSs3. Functional antibody activity peaked on days 10 and 14 post-vaccination in fecal and serum samples, respectively. Bactericidal and OPKA titers were closely associated. Peak fold rises in functional antibody titers in serum and fecal extracts were also associated. Antibody activity interrogated in IgG and IgA purified from stool fractions identified IgG as the primary driver of mucosal bactericidal and OPKA activity, with minimal functional activity of IgA alone, highlighting an underappreciated role for IgG in bacterial clearance in the mucosa. The combination of IgG and IgA in equal proportions enhanced bactericidal and OPKA titers hinting at a co-operative or synergistic action. Our findings provide insight into the functional anti-microbial capacity of vaccine-induced mucosal IgG and IgA and propose an operative local humoral effector of protective immunity.IMPORTANCEThere is an urgent need for a safe, effective, and affordable vaccine against Shigella. Understanding the immunological underpinning of Shigella infection and the make-up of protective immunity is critical to achieve the best approach to prevent illness caused by this mucosal pathogen. We measured the complement-dependent bactericidal and opsonophagocytic antibody killing in serum and stool extracts from adult volunteers vaccinated with Shigella sonnei live oral vaccine candidates WRSs2 and WRSs3. For the first time, we detected functional antibody responses in stool samples that were correlated with those in sera. Using purified stool IgA and IgG fractions, we found that functional activity was mediated by IgG, with some help from IgA. These findings provide insight into the functional anti-microbial capacity of vaccine-induced mucosal IgG and IgA and support future studies to identify potential markers of protective mucosal immunity.
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Affiliation(s)
- Shikha Shrivastava
- Department of Pediatrics, Center for Vaccine Development and Global Health, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Alain B. Agnememel
- Department of Pediatrics, Center for Vaccine Development and Global Health, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Esther Ndungo
- Department of Pediatrics, Center for Vaccine Development and Global Health, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Dilara Islam
- Department of Pediatrics, Center for Vaccine Development and Global Health, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Yuanyuan Liang
- Department of Epidemiology and Public Health, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Robert W. Frenck
- Division of Infectious Diseases, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, USA
| | - Marcela F. Pasetti
- Department of Epidemiology and Public Health, University of Maryland School of Medicine, Baltimore, Maryland, USA
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4
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Kulkarni DH, Talati K, Joyce EL, Kousik H, Harris DL, Floyd AN, Vavrinyuk V, Barrios B, Udayan S, McDonald K, John V, Hsieh CS, Newberry RD. Small Intestinal Goblet Cells Control Humoral Immune Responses and Mobilization During Enteric Infection. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.01.06.573891. [PMID: 38260555 PMCID: PMC10802374 DOI: 10.1101/2024.01.06.573891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2024]
Abstract
Humoral immune responses within the gut play diverse roles including pathogen clearance during enteric infections, maintaining tolerance, and facilitating the assemblage and stability of the gut microbiota. How these humoral immune responses are initiated and contribute to these processes are well studied. However, the signals promoting the expansion of these responses and their rapid mobilization to the gut mucosa are less well understood. Intestinal goblet cells form goblet cell-associated antigen passages (GAPs) to deliver luminal antigens to the underlying immune system and facilitate tolerance. GAPs are rapidly inhibited during enteric infection to prevent inflammatory responses to innocuous luminal antigens. Here we interrogate GAP inhibition as a key physiological response required for effective humoral immunity. Independent of infection, GAP inhibition resulted in enrichment of transcripts representing B cell recruitment, expansion, and differentiation into plasma cells in the small intestine (SI), which were confirmed by flow cytometry and ELISpot assays. Further we observed an expansion of isolated lymphoid follicles within the SI, as well as expansion of plasma cells in the bone marrow upon GAP inhibition. S1PR1-induced blockade of leukocyte trafficking during GAP inhibition resulted in a blunting of SI plasma cell expansion, suggesting that mobilization of plasma cells from the bone marrow contributes to their expansion in the gut. However, luminal IgA secretion was only observed in the presence of S. typhimurium infection, suggesting that although GAP inhibition mobilizes a mucosal humoral immune response, a second signal is required for full effector function. Overriding GAP inhibition during enteric infection abrogated the expansion of laminar propria IgA+ plasma cells. We conclude that GAP inhibition is a required physiological response for efficiently mobilizing mucosal humoral immunity in response to enteric infection.
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Affiliation(s)
- Devesha H. Kulkarni
- Division of Gastroenterology, Washington University in Saint Louis School of Medicine, St. Louis, MO, USA
| | - Khushi Talati
- Division of Gastroenterology, Washington University in Saint Louis School of Medicine, St. Louis, MO, USA
| | - Elisabeth L. Joyce
- Division of Gastroenterology, Washington University in Saint Louis School of Medicine, St. Louis, MO, USA
| | - Hrishi Kousik
- Division of Gastroenterology, Washington University in Saint Louis School of Medicine, St. Louis, MO, USA
| | - Dalia L. Harris
- Division of Gastroenterology, Washington University in Saint Louis School of Medicine, St. Louis, MO, USA
| | - Alexandria N. Floyd
- Division of Gastroenterology, Washington University in Saint Louis School of Medicine, St. Louis, MO, USA
| | - Vitaly Vavrinyuk
- Division of Gastroenterology, Washington University in Saint Louis School of Medicine, St. Louis, MO, USA
| | - Bibianna Barrios
- Division of Gastroenterology, Washington University in Saint Louis School of Medicine, St. Louis, MO, USA
| | - Sreeram Udayan
- Division of Gastroenterology, Washington University in Saint Louis School of Medicine, St. Louis, MO, USA
| | - Keely McDonald
- Division of Gastroenterology, Washington University in Saint Louis School of Medicine, St. Louis, MO, USA
| | - Vini John
- Division of Gastroenterology, Washington University in Saint Louis School of Medicine, St. Louis, MO, USA
| | - Chyi-Song Hsieh
- Division of Rheumatology John T. Milliken Department of Medicine, Washington University in Saint Louis School of Medicine, St. Louis, MO, USA
| | - Rodney D. Newberry
- Division of Gastroenterology, Washington University in Saint Louis School of Medicine, St. Louis, MO, USA
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5
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Shinkura R. Development of Orally Ingestible IgA Antibody Drugs to Maintain Symbiosis Between Humans and Microorganisms. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2024; 1444:165-176. [PMID: 38467979 DOI: 10.1007/978-981-99-9781-7_11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/13/2024]
Abstract
In recent years, dysbiosis, abnormalities in the gut microbiota, has been reported to be associated with the development of many diseases, and improving the gut microbiota is important for health maintenance. It has been shown that the host recognizes and regulates intestinal bacteria by means of IgA antibodies secreted into the gut, but the precise nature of the commensal gut bacteria recognized by each IgA antibody is unclear. We have cloned monoclonal IgA antibodies from mouse intestinal IgA-producing cells and are searching for bacterial molecules recognized by each IgA clone. Although the interaction of IgA antibodies with intestinal bacteria is still largely unknown and requires further basic research, we discuss the potential use of orally ingestible IgA antibodies as agents to improve intestinal microbiota.
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Affiliation(s)
- Reiko Shinkura
- Laboratory of Immunology and Infection Control, Institute for Quantitative Biosciences, The University of Tokyo, Tokyo, Japan.
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6
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Skerniskyte J, Mulet C, André AC, Anderson MC, Injarabian L, Buck A, Prade VM, Sansonetti PJ, Reibel-Foisset S, Walch AK, Lebel M, Lykkesfeldt J, Marteyn BS. Ascorbate deficiency increases progression of shigellosis in guinea pigs and mice infection models. Gut Microbes 2023; 15:2271597. [PMID: 37876025 PMCID: PMC10730169 DOI: 10.1080/19490976.2023.2271597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Accepted: 10/12/2023] [Indexed: 10/26/2023] Open
Abstract
Shigella spp. are the causative agents of bacterial dysentery and shigellosis, mainly in children living in developing countries. The study of Shigella entire life cycle in vivo and the evaluation of vaccine candidates' protective efficacy have been hampered by the lack of a suitable animal model of infection. None of the studies evaluated so far (rabbit, guinea pig, mouse) allowed the recapitulation of full shigellosis symptoms upon Shigella oral challenge. Historical reports have suggested that dysentery and scurvy are both metabolic diseases associated with ascorbate deficiency. Mammals, which are susceptible to Shigella infection (humans, non-human primates and guinea pigs) are among the few species unable to synthesize ascorbate. We optimized a low-ascorbate diet to induce moderate ascorbate deficiency, but not scurvy, in guinea pigs to investigate whether poor vitamin C status increases the progression of shigellosis. Moderate ascorbate deficiency increased shigellosis symptom severity during an extended period of time (up to 48 h) in all strains tested (Shigella sonnei, Shigella flexneri 5a, and 2a). At late time points, an important influx of neutrophils was observed both within the disrupted colonic mucosa and in the luminal compartment, although Shigella was able to disseminate deep into the organ to reach the sub-mucosal layer and the bloodstream. Moreover, we found that ascorbate deficiency also increased Shigella penetration into the colon epithelium layer in a Gulo-/- mouse infection model. The use of these new rodent models of shigellosis opens new doors for the study of both Shigella infection strategies and immune responses to Shigella infection.
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Affiliation(s)
- Jurate Skerniskyte
- Institut de Biologie Moléculaire et Cellulaire, Architecture et Réactivité de l’ARN, Université de Strasbourg, Strasbourg, France
| | - Céline Mulet
- Unité de Pathogénie Microbienne Moléculaire, Institut Pasteur, Université de Paris, Paris, France
| | - Antonin C. André
- Institut de Biologie Moléculaire et Cellulaire, Architecture et Réactivité de l’ARN, Université de Strasbourg, Strasbourg, France
- Unité de Pathogénie Microbienne Moléculaire, Institut Pasteur, Université de Paris, Paris, France
| | - Mark C. Anderson
- Unité de Pathogénie Microbienne Moléculaire, Institut Pasteur, Université de Paris, Paris, France
| | - Louise Injarabian
- Institut de Biologie Moléculaire et Cellulaire, Architecture et Réactivité de l’ARN, Université de Strasbourg, Strasbourg, France
| | - Achim Buck
- Research Unit Analytical Pathology, Helmholtz Zentrum München – German Research Center for Environmental Health, Neuherberg, Germany
| | - Verena M. Prade
- Research Unit Analytical Pathology, Helmholtz Zentrum München – German Research Center for Environmental Health, Neuherberg, Germany
| | - Philippe J. Sansonetti
- Unité de Pathogénie Microbienne Moléculaire, Institut Pasteur, Université de Paris, Paris, France
- Collège de France, Paris, France
| | | | - Axel K. Walch
- Research Unit Analytical Pathology, Helmholtz Zentrum München – German Research Center for Environmental Health, Neuherberg, Germany
| | - Michel Lebel
- Centre de recherche du CHU de Québec, Faculty of Medicine, Université Laval, Québec, Canada
| | - Jens Lykkesfeldt
- Section for Experimental Animal Models, Faculty of Health and Medical Sciences, University Copenhagen, Copenhagen, Denmark
| | - Benoit S. Marteyn
- Institut de Biologie Moléculaire et Cellulaire, Architecture et Réactivité de l’ARN, Université de Strasbourg, Strasbourg, France
- Unité de Pathogenèse des Infections Vasculaires, Institut Pasteur, INSERM U1225, Paris, France
- University of Strasbourg Institute for Advanced Study (USIAS), Strasbourg, France
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7
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Mahdally SM, Izquierdo M, Viscardi RM, Magder LS, Crowley HM, Bafford AC, Drachenberg CB, Farfan MJ, Fasano A, Sztein MB, Salerno-Goncalves R. Secretory-IgA binding to intestinal microbiota attenuates inflammatory reactions as the intestinal barrier of preterm infants matures. Clin Exp Immunol 2023; 213:339-356. [PMID: 37070830 PMCID: PMC10570995 DOI: 10.1093/cei/uxad042] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 02/09/2023] [Accepted: 04/11/2023] [Indexed: 04/19/2023] Open
Abstract
Previous work has shown that Secretory-IgA (SIgA) binding to the intestinal microbiota is variable and may regulate host inflammatory bowel responses. Nevertheless, the impact of the SIgA functional binding to the microbiota remains largely unknown in preterm infants whose immature epithelial barriers make them particularly susceptible to inflammation. Here, we investigated SIgA binding to intestinal microbiota isolated from stools of preterm infants <33 weeks gestation with various levels of intestinal permeability. We found that SIgA binding to intestinal microbiota attenuates inflammatory reactions in preterm infants. We also observed a significant correlation between SIgA affinity to the microbiota and the infant's intestinal barrier maturation. Still, SIgA affinity was not associated with developing host defenses, such as the production of mucus and inflammatory calprotectin protein, but it depended on the microbiota shifts as the intestinal barrier matures. In conclusion, we reported an association between the SIgA functional binding to the microbiota and the maturity of the preterm infant's intestinal barrier, indicating that the pattern of SIgA coating is altered as the intestinal barrier matures.
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Affiliation(s)
- Sarah M Mahdally
- Division of Neonatology, Department of Pediatrics, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Mariana Izquierdo
- Center for Vaccine Development and Global Health, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Rose M Viscardi
- Division of Neonatology, Department of Pediatrics, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Laurence S Magder
- Department of Epidemiology and Public Health, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Helena M Crowley
- Division of Pediatric Surgery and Urology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Andrea C Bafford
- Division of General and Oncologic Surgery, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Cinthia B Drachenberg
- Department of Pathology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Mauricio J Farfan
- Departamento de Pediatría y Cirugía Infantil, Facultad de Medicina, Hospital Dr. Luis Calvo Mackenna, Universidad de Chile, Santiago, Chile
| | - Alessio Fasano
- Mucosal Immunology and Biology Research Center, Massachusetts General Hospital for Children, Boston, MA, USA
| | - Marcelo B Sztein
- Center for Vaccine Development and Global Health, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Rosangela Salerno-Goncalves
- Center for Vaccine Development and Global Health, University of Maryland School of Medicine, Baltimore, MD, USA
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8
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Qin D, Li Y, Chen X, Li L, Wang G, Hou X, Yu L. Secretory IgA-ETEC F5 Immune Complexes Promote Dendritic Cell Differentiation and Prime T Cell Proliferation in the Mouse Intestine. Life (Basel) 2023; 13:1936. [PMID: 37763339 PMCID: PMC10532461 DOI: 10.3390/life13091936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 09/13/2023] [Accepted: 09/19/2023] [Indexed: 09/29/2023] Open
Abstract
Although secretory IgA (SIgA) is the dominant antibody in mucosal secretions, the capacity of the SIgA-antigen complex to prime the activation of dendritic cells (DCs) and T cells in the intestinal epithelium is not well understood. To this end, the SIgA-ETEC F5 immune complexes (ICs) were prepared via Ni-NTA pull-down. After injecting the ICs into the intestines of SPF BALB/c mice, most ICs were observed in the Peyer's patch (PP). We established a microfold (M) cell culture model in vitro for transport experiments and the inhibition test. To evaluate the priming effect of mucosal immunity, we employed the DC2.4 stimulation test, T lymphocyte proliferation assays, and cytokine detection assays. We found that the ICs were taken up via clathrin-dependent endocytosis through M cells. The high expression of costimulatory molecules CD86, CD80, and CD40 indicated that the ICs promoted the differentiation and maturation of DC2.4 cells. The stimulation index (SI) in the complex group was significantly higher than in the control group, suggesting that the ICs stimulated the proliferation of primed T cells. The secretion of some cytokines, namely TNF-α, IFN-γ, IL-2, IL-4, IL-5, and IL-6, in spleen cells from the immunized mice was upregulated. These results indicate that ETEC F5 delivery mediated by SIgA in PPs initiates mucosal immune responses.
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Affiliation(s)
- Da Qin
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing 163319, China; (D.Q.); (Y.L.); (X.C.); (L.L.); (G.W.)
| | - Ying Li
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing 163319, China; (D.Q.); (Y.L.); (X.C.); (L.L.); (G.W.)
| | - Xiaoyan Chen
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing 163319, China; (D.Q.); (Y.L.); (X.C.); (L.L.); (G.W.)
| | - Liyang Li
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing 163319, China; (D.Q.); (Y.L.); (X.C.); (L.L.); (G.W.)
| | - Guihua Wang
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing 163319, China; (D.Q.); (Y.L.); (X.C.); (L.L.); (G.W.)
| | - Xilin Hou
- College of Animal Science and Technology, Heilongjiang Bayi Agricultural University, Daqing 163319, China;
| | - Liyun Yu
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing 163319, China; (D.Q.); (Y.L.); (X.C.); (L.L.); (G.W.)
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9
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Nihei Y, Higashiyama M, Miyauchi K, Haniuda K, Suzuki Y, Kubo M, Kitamura D. Subcutaneous immunisation with zymosan generates mucosal IgA-eliciting memory and protects mice from heterologous influenza virus infection. Int Immunol 2023; 35:377-386. [PMID: 37140172 DOI: 10.1093/intimm/dxad013] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Accepted: 04/29/2023] [Indexed: 05/05/2023] Open
Abstract
Immunoglobulin A (IgA) is the most abundant isotype of antibodies and provides a first line of defense at the mucosa against pathogens invading the host. It has been widely accepted that the mucosal IgA response provided by vaccination requires mucosal inoculation, and intranasal inoculation has been proposed for vaccines against influenza virus. Considering the difficulty of intranasal vaccination in infants or elderly people, however, parenteral vaccination that provides the mucosal IgA response is desirable. Here, we demonstrate that subcutaneous immunisation with zymosan, a yeast cell wall constituent known to be recognised by Dectin-1 and TLR2, potentiates the production of antigen-specific IgA antibodies in the sera and airway mucosa upon intranasal antigen challenge. We confirmed that the antigen-specific IgA-secreting cells accumulated in the lung and nasal-associated lymphoid tissues after the antigen challenge. Such an adjuvant effect of zymosan in the primary immunisation for the IgA response depended on Dectin-1 signalling, but not on TLR2. The IgA response to the antigen challenge required both antigen-specific memory B and T cells, and the generation of memory T cells, but not memory B cells, depended on zymosan as an adjuvant. Finally, we demonstrated that subcutaneous inoculation of inactivated influenza virus with zymosan, but not with alum, mostly protected the mice from infection with a lethal dose of a heterologous virus strain. These data suggest that zymosan is a possible adjuvant for parenteral immunisation that generates memory IgA responses to respiratory viruses such as influenza virus.
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Affiliation(s)
- Yoshihito Nihei
- Department of Nephrology, Juntendo University Faculty of Medicine, Bunkyo-ku, Tokyo 113-8421, Japan
- Division of Cancer Cell Biology, Research Institute for Biomedical Sciences (RIBS), Tokyo University of Science, Noda, Chiba 278-0022, Japan
| | - Mizuki Higashiyama
- Division of Cancer Cell Biology, Research Institute for Biomedical Sciences (RIBS), Tokyo University of Science, Noda, Chiba 278-0022, Japan
| | - Kosuke Miyauchi
- Laboratory for Cytokine Regulation, Center for Integrative Medical Science, RIKEN Yokohama Institute, Yokohama, Kanagawa 230-0045, Japan
| | - Kei Haniuda
- Division of Cancer Cell Biology, Research Institute for Biomedical Sciences (RIBS), Tokyo University of Science, Noda, Chiba 278-0022, Japan
| | - Yusuke Suzuki
- Department of Nephrology, Juntendo University Faculty of Medicine, Bunkyo-ku, Tokyo 113-8421, Japan
| | - Masato Kubo
- Laboratory for Cytokine Regulation, Center for Integrative Medical Science, RIKEN Yokohama Institute, Yokohama, Kanagawa 230-0045, Japan
- Division of Molecular Pathology, RIBS, Tokyo University of Science, Noda, Chiba 278-0022, Japan
| | - Daisuke Kitamura
- Division of Cancer Cell Biology, Research Institute for Biomedical Sciences (RIBS), Tokyo University of Science, Noda, Chiba 278-0022, Japan
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10
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Boero E, Vezzani G, Micoli F, Pizza M, Rossi O. Functional assays to evaluate antibody-mediated responses against Shigella: a review. Front Cell Infect Microbiol 2023; 13:1171213. [PMID: 37260708 PMCID: PMC10227456 DOI: 10.3389/fcimb.2023.1171213] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Accepted: 04/27/2023] [Indexed: 06/02/2023] Open
Abstract
Shigella is a major global pathogen and the etiological agent of shigellosis, a diarrheal disease that primarily affects low- and middle-income countries. Shigellosis is characterized by a complex, multistep pathogenesis during which bacteria use multiple invasion proteins to manipulate and invade the intestinal epithelium. Antibodies, especially against the O-antigen and some invasion proteins, play a protective role as titres against specific antigens inversely correlate with disease severity; however, the context of antibody action during pathogenesis remains to be elucidated, especially with Shigella being mostly an intracellular pathogen. In the absence of a correlate of protection, functional assays rebuilding salient moments of Shigella pathogenesis can improve our understanding of the role of protective antibodies in blocking infection and disease. In vitro assays are important tools to build correlates of protection. Only recently animal models to recapitulate human pathogenesis, often not in full, have been established. This review aims to discuss in vitro assays to evaluate the functionality of anti-Shigella antibodies in polyclonal sera in light of the multistep and multifaced Shigella infection process. Indeed, measurement of antibody level alone may limit the evaluation of full vaccine potential. Serum bactericidal assay (SBA), and other functional assays such as opsonophagocytic killing assays (OPKA), and adhesion/invasion inhibition assays (AIA), are instead physiologically relevant and may provide important information regarding the role played by these effector mechanisms in protective immunity. Ultimately, the review aims at providing scientists in the field with new points of view regarding the significance of functional assays of choice which may be more representative of immune-mediated protection mechanisms.
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Affiliation(s)
- Elena Boero
- GSK Vaccines Institute for Global Health (GVGH) S.r.l., Siena, Italy
| | - Giacomo Vezzani
- GSK Vaccines Institute for Global Health (GVGH) S.r.l., Siena, Italy
| | - Francesca Micoli
- GSK Vaccines Institute for Global Health (GVGH) S.r.l., Siena, Italy
| | - Mariagrazia Pizza
- GSK Vaccines Institute for Global Health (GVGH) S.r.l., Siena, Italy
- Department of Life Sciences, Imperial College London, London, United Kingdom
| | - Omar Rossi
- GSK Vaccines Institute for Global Health (GVGH) S.r.l., Siena, Italy
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11
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Matsuzawa M, Ando T, Fukase S, Kimura M, Kume Y, Ide T, Izawa K, Kaitani A, Hara M, Nakamura E, Kamei A, Matsuda A, Nakano N, Maeda K, Tada N, Ogawa H, Okumura K, Murakami A, Ebihara N, Kitaura J. The protective role of conjunctival goblet cell mucin sialylation. Nat Commun 2023; 14:1417. [PMID: 36932081 PMCID: PMC10023771 DOI: 10.1038/s41467-023-37101-y] [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: 05/29/2022] [Accepted: 02/27/2023] [Indexed: 03/19/2023] Open
Abstract
Gel-forming mucins secreted by conjunctival goblet cells have been implicated in the clearance of allergens, pathogens, and debris. However, their roles remain incompletely understood. Here we show that human and mouse conjunctival goblet cell mucins have Alcian blue-detectable sialic acids, but not sulfates in the steady state. Interestingly, Balb/c mouse strain lacks this sialylation due to a point mutation in a sialyltransferase gene, St6galnac1, which is responsible for sialyl-Tn synthesis. Introduction of intact St6galnac1 to Balb/c restores the sialylation of conjunctival goblet cell mucus. Sialylated mucus efficiently captures and encapsulates the allergen particles in an impenetrable layer, leading to the protection of mice from the development of allergic conjunctivitis. Expression of ST6GALNAC1 and sialyl-Tn is upregulated in humans under conditions with chronic stimuli. These results indicate that the sialylated glycans on the ocular mucins play an essential role in maintaining the conjunctival mucosa by protecting from the incoming foreign bodies such as allergen particles.
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Affiliation(s)
- Moe Matsuzawa
- Atopy (Allergy) Research Center, Juntendo University Graduate School of Medicine, Tokyo, 113-8421, Japan
- Department of Ophthalmology, Juntendo University Urayasu Hospital, Urayasu, Chiba, 279-0021, Japan
- Department of Ophthalmology, Juntendo University Graduate School of Medicine, Tokyo, 113-8421, Japan
| | - Tomoaki Ando
- Atopy (Allergy) Research Center, Juntendo University Graduate School of Medicine, Tokyo, 113-8421, Japan.
| | - Saaya Fukase
- Atopy (Allergy) Research Center, Juntendo University Graduate School of Medicine, Tokyo, 113-8421, Japan
- Department of Ophthalmology, Juntendo University Urayasu Hospital, Urayasu, Chiba, 279-0021, Japan
- Department of Ophthalmology, Juntendo University Graduate School of Medicine, Tokyo, 113-8421, Japan
| | - Meiko Kimura
- Atopy (Allergy) Research Center, Juntendo University Graduate School of Medicine, Tokyo, 113-8421, Japan
- Department of Ophthalmology, Juntendo University Urayasu Hospital, Urayasu, Chiba, 279-0021, Japan
- Department of Ophthalmology, Juntendo University Graduate School of Medicine, Tokyo, 113-8421, Japan
| | - Yasuharu Kume
- Atopy (Allergy) Research Center, Juntendo University Graduate School of Medicine, Tokyo, 113-8421, Japan
- Department of Ophthalmology, Juntendo University Urayasu Hospital, Urayasu, Chiba, 279-0021, Japan
- Department of Ophthalmology, Juntendo University Graduate School of Medicine, Tokyo, 113-8421, Japan
| | - Takuma Ide
- Atopy (Allergy) Research Center, Juntendo University Graduate School of Medicine, Tokyo, 113-8421, Japan
- Department of Otorhinolaryngology, Juntendo University Graduate School of Medicine, Tokyo, 113-8421, Japan
| | - Kumi Izawa
- Atopy (Allergy) Research Center, Juntendo University Graduate School of Medicine, Tokyo, 113-8421, Japan
| | - Ayako Kaitani
- Atopy (Allergy) Research Center, Juntendo University Graduate School of Medicine, Tokyo, 113-8421, Japan
| | - Mutsuko Hara
- Atopy (Allergy) Research Center, Juntendo University Graduate School of Medicine, Tokyo, 113-8421, Japan
- Laboratory of Molecular and Biochemical Research, Biomedical Research Core Facilities, Juntendo University Graduate School of Medicine, Tokyo, 113-8421, Japan
| | - Eri Nakamura
- Research Institute for Diseases of Old Age, Juntendo University Graduate School of Medicine, Tokyo, 113-8421, Japan
| | - Anna Kamei
- Atopy (Allergy) Research Center, Juntendo University Graduate School of Medicine, Tokyo, 113-8421, Japan
- Department of Science of Allergy and Inflammation, Juntendo University Graduate School of Medicine, Tokyo, 113-8421, Japan
| | - Akira Matsuda
- Department of Ophthalmology, Juntendo University Graduate School of Medicine, Tokyo, 113-8421, Japan
| | - Nobuhiro Nakano
- Atopy (Allergy) Research Center, Juntendo University Graduate School of Medicine, Tokyo, 113-8421, Japan
| | - Keiko Maeda
- Atopy (Allergy) Research Center, Juntendo University Graduate School of Medicine, Tokyo, 113-8421, Japan
- Department of Immunological Diagnosis, Juntendo University Graduate School of Medicine, Tokyo, 113-8421, Japan
| | - Norihiro Tada
- Center for Biomedical Research Resources, Juntendo University Graduate School of Medicine, Tokyo, 113-8421, Japan
| | - Hideoki Ogawa
- Atopy (Allergy) Research Center, Juntendo University Graduate School of Medicine, Tokyo, 113-8421, Japan
| | - Ko Okumura
- Atopy (Allergy) Research Center, Juntendo University Graduate School of Medicine, Tokyo, 113-8421, Japan
| | - Akira Murakami
- Department of Ophthalmology, Juntendo University Graduate School of Medicine, Tokyo, 113-8421, Japan
| | - Nobuyuki Ebihara
- Department of Ophthalmology, Juntendo University Urayasu Hospital, Urayasu, Chiba, 279-0021, Japan
- Department of Ophthalmology, Juntendo University Graduate School of Medicine, Tokyo, 113-8421, Japan
| | - Jiro Kitaura
- Atopy (Allergy) Research Center, Juntendo University Graduate School of Medicine, Tokyo, 113-8421, Japan.
- Department of Science of Allergy and Inflammation, Juntendo University Graduate School of Medicine, Tokyo, 113-8421, Japan.
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12
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Zhao W, Huang Y, Cui N, Wang R, Xiao Z, Su X. Glucose oxidase as an alternative to antibiotic growth promoters improves the immunity function, antioxidative status, and cecal microbiota environment in white-feathered broilers. Front Microbiol 2023; 14:1100465. [PMID: 36937262 PMCID: PMC10020722 DOI: 10.3389/fmicb.2023.1100465] [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: 11/16/2022] [Accepted: 02/06/2023] [Indexed: 03/06/2023] Open
Abstract
This study aimed to demonstrate the effects of glucose oxidase (GOD) on broilers as a potential antibiotic substitute. A total of four hundred twenty 1-day-old male Cobb500 broilers were randomly assigned into five dietary treatments, each with six replicates (12 chicks per replicate). The treatments included two control groups (a basal diet and a basal diet with 50 mg/kg aureomycin) and three GOD-additive groups involving three different concentrations of GOD. Analysis after the t-test showed that, on day 21, the feed:gain ratio significantly decreased in the 1,200 U/kg GOD-supplied group (GOD1200) compared to the antibiotic group (Ant). The same effect was also observed in GOD1200 during days 22-42 and in the 600 U/kg GOD-supplied group (GOD600) when compared to the control group (Ctr). The serum tests indicated that, on day 21, the TGF-β cytokine was significantly decreased in both GOD600 and GOD1200 when compared with Ctr. A decrease in malondialdehyde and an increase in superoxide dismutase in GOD1200 were observed, which is similar to the effects seen in Ant. On day 42, the D-lactate and glutathione peroxidase activity changed remarkably in GOD1200 and surpassed Ant. Furthermore, GOD upregulated the expression of the jejunal barrier genes (MUC-2 and ZO-1) in two phases relative to Ctr. In the aureomycin-supplied group, the secretory immunoglobulin A significantly decreased in the jejunum at 42 days. Changes in microbial genera were also discovered in the cecum by sequencing 16S rRNA genes at 42 days. The biomarkers for GOD supplementation were identified as Colidextribacter, Oscillibacter, Flavonifractor, Oscillospira, and Shuttleworthia. Except for Shuttleworthia, all the abovementioned genera were n-butyrate producers known for imparting their various benefits to broilers. The PICRUSt prediction of microbial communities revealed 11 pathways that were enriched in both the control and GOD-supplied groups. GOD1200 accounted for an increased number of metabolic pathways, demonstrating their potential in aiding nutrient absorption and digestion. In conclusion, a diet containing GOD can be beneficial to broiler health, particularly at a GOD concentration of 1,200 U/kg. The improved feed conversion ratio, immunity, antioxidative capacity, and intestinal condition demonstrated that GOD could be a valuable alternative to antibiotics in broiler breeding.
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Affiliation(s)
| | | | | | | | | | - Xiaoou Su
- Key Laboratory of Agro-Product Quality and Safety of the Ministry of Agriculture, Institute of Quality Standards and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing, China
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13
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Sollid LM, Iversen R. Tango of B cells with T cells in the making of secretory antibodies to gut bacteria. Nat Rev Gastroenterol Hepatol 2023; 20:120-128. [PMID: 36056203 DOI: 10.1038/s41575-022-00674-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/27/2022] [Indexed: 02/03/2023]
Abstract
Polymeric IgA and IgM are transported across the epithelial barrier from plasma cells in the lamina propria to exert a function in the gut lumen as secretory antibodies. Many secretory antibodies are reactive with the gut bacteria, and mounting evidence suggests that these antibodies are important for the host to control gut bacterial communities. However, we have incomplete knowledge of how bacteria-reactive secretory antibodies are formed. Antibodies from gut plasma cells often show bacterial cross-species reactivity, putting the degree of specificity behind anti-bacterial antibody responses into question. Such cross-species reactive antibodies frequently recognize non-genome-encoded membrane glycan structures. On the other hand, the T cell epitopes are peptides encoded in the bacterial genomes, thereby allowing a higher degree of predictable specificity on the T cell side of anti-bacterial immune responses. In this Perspective, we argue that the production of bacteria-reactive secretory antibodies is mainly controlled by the antigen specificity of T cells, which provide help to B cells. To be able to harness this system (for instance, for manipulation with vaccines), we need to obtain insight into the bacterial epitopes recognized by T cells in addition to characterizing the reactivity of the antibodies.
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Affiliation(s)
- Ludvig M Sollid
- K.G. Jebsen Coeliac Disease Research Centre, Institute of Clinical Medicine, University of Oslo, Oslo, Norway. .,Department of Immunology, Oslo University Hospital - Rikshospitalet, Oslo, Norway.
| | - Rasmus Iversen
- K.G. Jebsen Coeliac Disease Research Centre, Institute of Clinical Medicine, University of Oslo, Oslo, Norway. .,Department of Immunology, Oslo University Hospital - Rikshospitalet, Oslo, Norway.
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14
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Bhaumik U, Halder P, Howlader DR, Banerjee S, Maiti S, Dutta S, Koley H. A tetravalent Shigella Outer Membrane Vesicles based candidate vaccine offered cross-protection against all the serogroups of Shigella in adult mice. Microbes Infect 2023; 25:105100. [PMID: 36696935 DOI: 10.1016/j.micinf.2023.105100] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Revised: 12/26/2022] [Accepted: 01/06/2023] [Indexed: 01/23/2023]
Abstract
In today's world and mostly in low and middle income countries, S. flexneri and S. sonnei remains the major causative agent of clinical bacillary dysentery. Based on contemporary epidemiology, a tetravalent Outer Membrane Vesicle (OMVs) based immunogen was formulated using the most commonly circulating Shigella strains, namely, S. flexneri 2a, S. flexneri 3a, S. flexneri 6 and S. sonnei I, in a 1:1:1:1 ratio. Adult BALB/c mice were orally immunized in a prime-boost-boost manner. Tetravalent Shigella OMVs immunogen induced significant and persistent serum and mucosal antibodies against OMVs, Outer Membrane Proteins (OMPs) and lipopolysaccharides (LPS). Tetravalent OMVs also primed cell mediated immune response effectively. Protective efficacy against six heterologous Shigella strains was checked in an intra-peritoneal mouse model. Immunized mice survived lethal infection better than the non-immunized mice cohort with fewer replicating bacteria isolated from their gut. This study establishes the possibilities of tetravalent OMVs immunogen to become a potent vaccine candidate against human shigellosis, overcoming the limitations of sero-specific cross-protection of Shigella species.
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Affiliation(s)
- Ushasi Bhaumik
- Division of Bacteriology, ICMR- National Institute of Cholera and Enteric Diseases. P-33, C.I.T. Road, Scheme XM, Beliaghata, Kolkata-700 010, India; Center for Vaccine Development and Global Health, School of Medicine, University of Maryland, Baltimore, MD 2120, United States
| | - Prolay Halder
- Division of Bacteriology, ICMR- National Institute of Cholera and Enteric Diseases. P-33, C.I.T. Road, Scheme XM, Beliaghata, Kolkata-700 010, India
| | - Debaki Ranjan Howlader
- Division of Bacteriology, ICMR- National Institute of Cholera and Enteric Diseases. P-33, C.I.T. Road, Scheme XM, Beliaghata, Kolkata-700 010, India; Department of Veterinary Pathobiology, University of Missouri, Columbia, MO 65201, United States
| | - Soumalya Banerjee
- Division of Bacteriology, ICMR- National Institute of Cholera and Enteric Diseases. P-33, C.I.T. Road, Scheme XM, Beliaghata, Kolkata-700 010, India
| | - Suhrid Maiti
- Division of Bacteriology, ICMR- National Institute of Cholera and Enteric Diseases. P-33, C.I.T. Road, Scheme XM, Beliaghata, Kolkata-700 010, India; Department of Veterinary Pathobiology, University of Missouri, Columbia, MO 65201, United States
| | - Shanta Dutta
- ICMR- National Institute of Cholera and Enteric Diseases. . P-33, C.I.T. Road, Scheme XM, Beliaghata, Kolkata 700 010, India
| | - Hemanta Koley
- Division of Bacteriology, ICMR- National Institute of Cholera and Enteric Diseases. P-33, C.I.T. Road, Scheme XM, Beliaghata, Kolkata-700 010, India. http://www.niced.org.in/
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15
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Nakanishi K, Takase T, Ohira Y, Ida R, Mogi N, Kikuchi Y, Matsuda M, Kurohane K, Akimoto Y, Hayakawa J, Kawakami H, Niwa Y, Kobayashi H, Umemoto E, Imai Y. Prevention of Shiga toxin 1-caused colon injury by plant-derived recombinant IgA. Sci Rep 2022; 12:17999. [PMID: 36289440 PMCID: PMC9606113 DOI: 10.1038/s41598-022-22851-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Accepted: 10/20/2022] [Indexed: 01/24/2023] Open
Abstract
Immunoglobulin A (IgA) is a candidate antibody for oral passive immunization against mucosal pathogens like Shiga toxin-producing Escherichia coli (STEC). We previously established a mouse IgG monoclonal antibody (mAb) neutralizing Shiga toxin 1 (Stx1), a bacterial toxin secreted by STEC. We designed cDNA encoding an anti-Stx1 antibody, in which variable regions were from the IgG mAb and all domains of the heavy chain constant region from a mouse IgA mAb. Considering oral administration, we expressed the cDNA in a plant expression system aiming at the production of enough IgA at low cost. The recombinant-IgA expressed in Arabidopsis thaliana formed the dimeric IgA, bound to the B subunit of Stx1, and neutralized Stx1 toxicity to Vero cells. Colon injury was examined by exposing BALB/c mice to Stx1 via the intrarectal route. Epithelial cell death, loss of crypt and goblet cells from the distal colon were observed by electron microscopy. A loss of secretory granules containing MUC2 mucin and activation of caspase-3 were observed by immunohistochemical methods. Pretreatment of Stx1 with the plant-based recombinant IgA completely suppressed caspase-3 activation and loss of secretory granules. The results indicate that a plant-based recombinant IgA prevented colon damage caused by Stx1 in vivo.
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Affiliation(s)
- Katsuhiro Nakanishi
- grid.469280.10000 0000 9209 9298Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka City, Shizuoka 422-8526 Japan
| | - Taichi Takase
- grid.469280.10000 0000 9209 9298Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka City, Shizuoka 422-8526 Japan
| | - Yuya Ohira
- grid.469280.10000 0000 9209 9298Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka City, Shizuoka 422-8526 Japan
| | - Ryota Ida
- grid.469280.10000 0000 9209 9298Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka City, Shizuoka 422-8526 Japan
| | - Noriko Mogi
- grid.469280.10000 0000 9209 9298Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka City, Shizuoka 422-8526 Japan
| | - Yuki Kikuchi
- grid.469280.10000 0000 9209 9298Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka City, Shizuoka 422-8526 Japan
| | - Minami Matsuda
- grid.469280.10000 0000 9209 9298Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka City, Shizuoka 422-8526 Japan
| | - Kohta Kurohane
- grid.469280.10000 0000 9209 9298Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka City, Shizuoka 422-8526 Japan
| | - Yoshihiro Akimoto
- grid.411205.30000 0000 9340 2869Department of Anatomy, Kyorin University School of Medicine, Mitaka, Tokyo, 181-8611 Japan
| | - Junri Hayakawa
- grid.411205.30000 0000 9340 2869Laboratory for Electron Microscopy, Kyorin University School of Medicine, Mitaka, Tokyo, 181-8611 Japan
| | - Hayato Kawakami
- grid.411205.30000 0000 9340 2869Department of Anatomy, Kyorin University School of Medicine, Mitaka, Tokyo, 181-8611 Japan
| | - Yasuo Niwa
- grid.469280.10000 0000 9209 9298Laboratory of Plant Molecular Improvement, Graduate Division of Nutritional and Environmental Sciences, University of Shizuoka, Shizuoka City, Shizuoka 422-8526 Japan
| | - Hirokazu Kobayashi
- grid.469280.10000 0000 9209 9298Laboratory of Plant Molecular Improvement, Graduate Division of Nutritional and Environmental Sciences, University of Shizuoka, Shizuoka City, Shizuoka 422-8526 Japan
| | - Eiji Umemoto
- grid.469280.10000 0000 9209 9298Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka City, Shizuoka 422-8526 Japan
| | - Yasuyuki Imai
- grid.469280.10000 0000 9209 9298Laboratory of Microbiology and Immunology, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka City, Shizuoka 422-8526 Japan
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16
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Harnessing Nasal Immunity with IgA to Prevent Respiratory Infections. IMMUNO 2022. [DOI: 10.3390/immuno2040036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
The nasal cavity is a primary checkpoint for the invasion of respiratory pathogens. Numerous pathogens, including SARS-CoV-2, S. pneumoniae, S. aureus, etc., can adhere/colonize nasal lining to trigger an infection. Secretory IgA (sIgA) serves as the first line of immune defense against foreign pathogens. sIgA facilitates clearance of pathogenic microbes by intercepting their access to epithelial receptors and mucus entrapment through immune exclusion. Elevated levels of neutralizing IgA at the mucosal surfaces are associated with a high level of protection following intranasal immunizations. This review summarizes recent advances in intranasal vaccination technology and challenges in maintaining nominal IgA levels at the mucosal surface. Overall, the review emphasizes the significance of IgA-mediated nasal immunity, which holds a tremendous potential to mount protection against respiratory pathogens.
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17
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Clinton NA, Hameed SA, Agyei EK, Jacob JC, Oyebanji VO, Jabea CE. Crosstalk between the Intestinal Virome and Other Components of the Microbiota, and Its Effect on Intestinal Mucosal Response and Diseases. J Immunol Res 2022; 2022:7883945. [PMID: 36203793 PMCID: PMC9532165 DOI: 10.1155/2022/7883945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 09/12/2022] [Accepted: 09/14/2022] [Indexed: 11/17/2022] Open
Abstract
In recent years, there has been ample evidence illustrating the effect of microbiota on gut immunity, homeostasis, and disease. Most of these studies have engaged more efforts in understanding the role of the bacteriome in gut mucosal immunity and disease. However, studies on the virome and its influence on gut mucosal immunity and pathology are still at infancy owing to limited metagenomic tools. Nonetheless, the existing studies on the virome have largely been focused on the bacteriophages as these represent the main component of the virome with little information on endogenous retroviruses (ERVs) and eukaryotic viruses. In this review, we describe the gut virome, and its role in gut mucosal response and disease progression. We also explore the crosstalk between the virome and other microorganisms in the gut mucosa and elaborate on how these interactions shape the gut mucosal immunity going from bacteriophages through ERVs to eukaryotic viruses. Finally, we elucidate the potential contribution of this crosstalk in the pathogenesis of inflammatory bowel diseases and colon cancer.
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Affiliation(s)
- Njinju Asaba Clinton
- Health and Empowerment Foundation, Cameroon
- Mbonge District Hospital, Cameroon
- University of Buea, Cameroon
| | | | - Eugene Kusi Agyei
- Faculty of Pharmacy and Pharmaceutical Sciences, Kwame Nkrumah University of Science and Technology, Ghana
| | | | | | - Cyril Ekabe Jabea
- Health and Empowerment Foundation, Cameroon
- Mbonge District Hospital, Cameroon
- University of Buea, Cameroon
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18
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Davis EC, Castagna VP, Sela DA, Hillard MA, Lindberg S, Mantis NJ, Seppo AE, Järvinen KM. Gut microbiome and breast-feeding: Implications for early immune development. J Allergy Clin Immunol 2022; 150:523-534. [PMID: 36075638 PMCID: PMC9463492 DOI: 10.1016/j.jaci.2022.07.014] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2022] [Revised: 07/21/2022] [Accepted: 07/21/2022] [Indexed: 11/16/2022]
Abstract
Establishment of the gut microbiome during early life is a complex process with lasting implications for an individual's health. Several factors influence microbial assembly; however, breast-feeding is recognized as one of the most influential drivers of gut microbiome composition during infancy, with potential implications for function. Differences in gut microbial communities between breast-fed and formula-fed infants have been consistently observed and are hypothesized to partially mediate the relationships between breast-feeding and decreased risk for numerous communicable and noncommunicable diseases in early life. Despite decades of research on the gut microbiome of breast-fed infants, there are large scientific gaps in understanding how human milk has evolved to support microbial and immune development. This review will summarize the evidence on how breast-feeding broadly affects the composition and function of the early-life gut microbiome and discuss mechanisms by which specific human milk components shape intestinal bacterial colonization, succession, and function.
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Affiliation(s)
- Erin C Davis
- Division of Allergy and Immunology, Center for Food Allergy, Department of Pediatrics, University of Rochester School of Medicine and Dentistry, Golisano Children's Hospital, Rochester, NY
| | | | - David A Sela
- Department of Food Science, University of Massachusetts Amherst, Amherst, Mass; Department of Microbiology and Physiological Systems, University of Massachusetts Chan Medical School, Worcester, Mass; Organismic and Evolutionary Biology Graduate Program, University of Massachusetts Amherst, Amherst, Mass
| | - Margaret A Hillard
- Department of Food Science, University of Massachusetts Amherst, Amherst, Mass; Organismic and Evolutionary Biology Graduate Program, University of Massachusetts Amherst, Amherst, Mass
| | - Samantha Lindberg
- Department of Biomedical Sciences, University of Albany, Rensselaer, NY
| | - Nicholas J Mantis
- Division of Infectious Diseases, New York State Department of Health, Albany, NY
| | - Antti E Seppo
- Division of Allergy and Immunology, Center for Food Allergy, Department of Pediatrics, University of Rochester School of Medicine and Dentistry, Golisano Children's Hospital, Rochester, NY
| | - Kirsi M Järvinen
- Division of Allergy and Immunology, Center for Food Allergy, Department of Pediatrics, University of Rochester School of Medicine and Dentistry, Golisano Children's Hospital, Rochester, NY; Division of Allergy, Immunology, and Rheumatology, Department of Medicine, University of Rochester School of Medicine and Dentistry, Rochester, NY; Department of Microbiology and Immunology, University of Rochester School of Medicine and Dentistry, Rochester, NY.
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Li Y, Jiang J, Zhu L, Wang X, Wan W, Wang D, Li Z. Evaluation of Intestinal Microbial Metabolites in Preterm Infants with Different Initial Feeding Methods by In Vitro Fermentation Modeling System. Microorganisms 2022; 10:microorganisms10071453. [PMID: 35889172 PMCID: PMC9318846 DOI: 10.3390/microorganisms10071453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 07/14/2022] [Accepted: 07/15/2022] [Indexed: 12/04/2022] Open
Abstract
We aim to explore the intestinal microbial metabolites in preterm infants with noninvasive methods and analyze the effects of initial feeding methods. Preterm infants with gestational weeks lower than 34 were recruited for fecal sample collection every 7 days. Fecal pH, ammonia, bile acid, and secretory IgA (sIgA) were tested. A 1:10 fecal slurry was inoculated into different culture media containing different carbohydrates as the only carbon source: lactose (LAT), fructooligosaccharide (FOS), galactooligosaccharide (GOS), and 2′-fucosyllactose (FL2). After 24 h of anaerobic culture through an in vitro fermentation system, air pressure difference, carbohydrate degradation rate, and short-chain fatty acids (SCFAs) content in fermentation pots were measured. Preterm infants were assigned into two groups: group A, preterm infants fed by human milk, including mother’s own milk and donor human milk (DHM); group B, preterm infants fed by preterm formula at first 3 days and fed by human milk (including mother’s own milk and DHM) from day 4 to discharge. Group A included 90 samples and group B included 70 samples. Group A had lower fecal pH (p = 0.023), ammonia (p = 0.001), and bile acids (p = 0.025). Group B also had higher fecal sIgA levels, both in OD (p = 0.046) and concentration (p < 0.0001) methods. Carbohydrates degradation rates in group A were higher than group B, especially in LAT medium (p = 0.017) and GOS medium (p = 0.005). Gas production amount had no significant difference in all four media. Several different SCFAs in four kinds of different culture media in group A were higher than in group B, but valeric acid was lower in group A. The initial feeding methods may affect the preterm infants’ intestinal microecology and microbial metabolites for at least several weeks.
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Affiliation(s)
- Yunwei Li
- Peadiatric Department, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100730, China; (Y.L.); (J.J.); (W.W.); (D.W.)
| | - Jingjing Jiang
- Peadiatric Department, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100730, China; (Y.L.); (J.J.); (W.W.); (D.W.)
| | - Liying Zhu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Food Research, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (L.Z.); (X.W.)
| | - Xin Wang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Food Research, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (L.Z.); (X.W.)
| | - Weilin Wan
- Peadiatric Department, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100730, China; (Y.L.); (J.J.); (W.W.); (D.W.)
| | - Danhua Wang
- Peadiatric Department, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100730, China; (Y.L.); (J.J.); (W.W.); (D.W.)
| | - Zhenghong Li
- Peadiatric Department, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100730, China
- Correspondence: ; Tel.: +86-1850-1309-801
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NK cell spatial dynamics and IgA responses in gut-associated lymphoid tissues during SIV infections. Commun Biol 2022; 5:674. [PMID: 35798936 PMCID: PMC9262959 DOI: 10.1038/s42003-022-03619-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2021] [Accepted: 06/22/2022] [Indexed: 11/18/2022] Open
Abstract
HIV infection induces tissue damage including lymph node (LN) fibrosis and intestinal epithelial barrier disruption leading to bacterial translocation and systemic inflammation. Natural hosts of SIV, such as African Green Monkeys (AGM), do not display tissue damage despite high viral load in blood and intestinal mucosa. AGM mount a NK cell-mediated control of SIVagm replication in peripheral LN. We analyzed if NK cells also control SIVagm in mesenteric (mes) LN and if this has an impact on gut humoral responses and the production of IgA known for their anti-inflammatory role in the gut. We show that CXCR5 + NK cell frequencies increase in mesLN upon SIVagm infection and that NK cells migrate into and control viral replication in B cell follicles (BCF) of mesLN. The proportion of IgA+ memory B cells were increased in mesLN during SIVagm infection in contrast to SIVmac infection. Total IgA levels in gut remained normal during SIVagm infection, while strongly decreased in intestine of chronically SIVmac-infected macaques. Our data suggest an indirect impact of NK cell-mediated viral control in mesLN during SIVagm infection on preserved BCF function and IgA production in intestinal tissues. Differences between pathogenic and non-pathogenic SIV infections are investigated, in terms of NK cell location, function and IgA responses in gut associated lymphoid tissues (mesenteric lymph nodes, jejunum, ileon, colon).
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Cross Protectivity Analysis of 49.8 kDa Pili Subunits of S. flexneri against Vibrio cholerae Infection. Interdiscip Perspect Infect Dis 2022; 2022:3751521. [PMID: 35757682 PMCID: PMC9217611 DOI: 10.1155/2022/3751521] [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: 05/18/2021] [Revised: 01/29/2022] [Accepted: 02/01/2022] [Indexed: 11/18/2022] Open
Abstract
Background Although the AMV and AMS vaccine candidates have similar characteristics as hemagglutinin and adhesive molecules, there are differences in molecular weight. Objective The research aims to determine the immunological cross-reaction between AMS and AMV. Method Antihemagglutination test used the anti-adhesion molecular antibody AMS. Next, we examined the immune response that has to be linked with protectivity. The model of the research uses MLIL. The sample separated the mice into four groups, and each group had five mice. The first group was the negative control group. The second group was given AMV and infected with Shigella flexneri. The third group was immunized with AMV before being exposed to Shigella flexneri. The last group was infected with Vibrio cholerae. The immune response results were evaluated by calculating the weight of MLIL and counting the colony of bacteria. We also examined other AMS immune responses, namely, β-defensin and s-IgA levels. To get the data, we measured the number of Th17 immune effector cells, T-reg, and proinflammatory cytokine IL-17A. Data analysis was performed using ANOVA, independent t-test, Kruskal–Wallis, and Mann–Whitney tests. Results An antihemagglutination cross immune response, intestinal weight, the number of bacterial colonies, and other findings were found to be significant (p < 0.05) for the levels of β-defensin, s-IgA, Th17, T-reg, and IL-17A. Conclusion The 49.8 kDa·MW protein subunit of the Shigella flexneri adhesion molecule could act as a candidate vaccine homologous for shigellosis and cholera in the future.
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22
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Wu Y, Wu C, Che Y, Zhang T, Dai C, Nguyễn AD, Duan K, Huang Y, Li N, Zhou H, Wan X, Wang Y, Lei H, Hao P, Li C, Wu Y. Effects of Glycyrrhiza Polysaccharides on Chickens' Intestinal Health and Homeostasis. Front Vet Sci 2022; 9:891429. [PMID: 35647094 PMCID: PMC9134109 DOI: 10.3389/fvets.2022.891429] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Accepted: 04/05/2022] [Indexed: 01/20/2023] Open
Abstract
The overuse of antibiotics in poultry farming causes the accumulation of drug residue in animals' bodies and the occurrence of antibiotic-resistant bacteria, which not only compromise animals' health but ultimately endanger human health. Thus, there is an urgent need for a novel poultry feed additive to substitute for excessive antibiotics. Glycyrrhiza polysaccharides (GPS) derived from Chinese licorice have shown promising immunomodulatory effects in previous studies. The present study investigated the pharmacological effects of GPS on poultry intestines to assess whether it can be used as a feed additive. The results show that GPS can increase production of sIgA, promote the secretion activity of goblet cells, alter the gut microbial composition and lead to changes in short-chain fatty acids. GPS also elevated both Th1 and Th2 immune responses by facilitating the expression of IL-2, IL-4, IL-1β, and IFN-γ while increasing the proportion of both CD4+ and CD8+ cells in the intestine. Moreover, the results of 16S rRNA gene sequencing showed that GPS could significantly change intestinal microbiota composition in the intestine, evidenced by the increased proportion of Bacteroides, Butyricicoccus and Eisenbergiella, as well as a decreased portion of Erysipelatoclostridium, leading to a healthier intestinal microbiota composition for the host. Taken together, it can be concluded that GPS is safe to use as a novel feed additive that can be used as an alternative to prophylactic antibiotics in poultry feeding.
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Affiliation(s)
- Yu Wu
- Institute of Traditional Chinese Veterinary Medicine, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
| | - Chenyang Wu
- Beijing Key Laboratory of Traditional Chinese Veterinary Medicine, Beijing University of Agriculture, Beijing, China
| | - Yanyun Che
- Engineering Laboratory for National Healthcare Theories and Products of Yunnan Province, College of Pharmaceutical Science, Yunnan University of Chinese Medicine, Kunming, China
| | - Tao Zhang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Chen Dai
- College of Life Sciences, Experimental Teaching Center of Life Science, Nanjing Agricultural University, Nanjing, China
| | - Audrey D. Nguyễn
- Department of Biochemistry and Molecular Medicine, School of Medicine, University of California, Davis, Sacramento, CA, United States
| | - Kun Duan
- China Tobacco Henan Industrial Co., Ltd., Zhengzhou, China
| | - Yanyu Huang
- Department of Biochemistry and Molecular Medicine, School of Medicine, University of California, Davis, Sacramento, CA, United States
| | - Nannan Li
- Institute of Traditional Chinese Veterinary Medicine, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
| | - Hui Zhou
- Institute of Traditional Chinese Veterinary Medicine, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
| | - Xin Wan
- Institute of Traditional Chinese Veterinary Medicine, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
| | - Yuedi Wang
- Institute of Traditional Chinese Veterinary Medicine, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
| | - Hongjun Lei
- Institute of Traditional Chinese Veterinary Medicine, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
| | - Ping Hao
- Institute of Traditional Chinese Veterinary Medicine, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
| | - Caiyue Li
- Institute of Traditional Chinese Veterinary Medicine, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
| | - Yi Wu
- Institute of Traditional Chinese Veterinary Medicine, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
- *Correspondence: Yi Wu ;
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Kim JY, Bang SJ, Kim JY, Choi EJ, Heo K, Shim JJ, Lee JL. The Probiotic Strain Bifidobacterium animalis ssp. lactis HY8002 Potentially Improves the Mucosal Integrity of an Altered Intestinal Microbial Environment. Front Microbiol 2022; 13:817591. [PMID: 35572671 PMCID: PMC9102380 DOI: 10.3389/fmicb.2022.817591] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Accepted: 04/11/2022] [Indexed: 11/13/2022] Open
Abstract
Intestinal microbiota mediate the development and regulation of the intestinal immune system either directly or indirectly. Particularly, Bifidobacterium spp. play an important role in regulating the intestinal immunity and intestinal barrier. We demonstrated that Bifidobacterium animalis ssp. lactis HY8002, selected from eight Bifidobacterium strains by in vitro experimentation, had exceptional resistance to digestive tract conditions and high adhesion to intestinal epithelial cells and a positive effect on immunoglobulin A (IgA) secretion by Peyer’s patch cells. Moreover, HY8002 restored the expression of tight junction-related genes, initially reduced by lipopolysaccharide treatment, to normal levels in human intestinal epithelial cells. Notably, HY8002 restored kanamycin-induced reduction in Peyer’s patch cell numbers, serum and fecal IgA levels, and zonula occludens 1 and Toll-like receptor 2 levels in the mouse small intestine. In addition, HY8002 restores microbiome composition disturbed by kanamycin, and these microbiome changes have been found to correlate with TLR2 levels in the small intestine. Moreover, the ability of HY8002 to enhance IgA in Peyer’s patch cells and ZO-1 levels in intestinal epithelial cells was significantly inhibited by a TLR2 blocking antibody, which suggests that the HY8002 improve intestinal barrier function via TLR2. Finally, whole-genome sequencing of HY8002 revealed that it did not possess any known virulence factors. Therefore, HY8002 is a promising, functional probiotic supplement to improve intestinal barrier function by improving intestinal immunity and microbiota balance.
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Vilander AC, Hess A, Abdo Z, Ibrahim H, Doumbia L, Douyon S, Koné K, Boré A, Zambrana LE, Vilchez S, Koita O, Ryan EP. A Randomized Controlled Trial of Dietary Rice Bran Intake on Microbiota Diversity, Enteric Dysfunction, and Fecal Secretory IgA in Malian and Nicaraguan Infants. J Nutr 2022; 152:1792-1800. [PMID: 35441218 PMCID: PMC9258582 DOI: 10.1093/jn/nxac087] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 09/09/2021] [Accepted: 04/11/2022] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Malnutrition and diarrhea are leading causes of death in children aged <5 y. Rice bran is a nutrient-dense prebiotic available globally. OBJECTIVES The objective of this secondary analysis was to evaluate the effects of daily rice bran supplementation on environmental enteric dysfunction (EED) markers, total fecal secretory IgA (sIgA), and microbiota in infants at high risk of malnutrition. METHODS Six-month-old Malian and Nicaraguan infants were randomly assigned to control or daily rice bran supplementation cohorts (1 to 5 g/d). Feces were collected monthly for 6 mo to evaluate fecal sIgA, markers of EED, and microbiota diversity. Statistical methods included linear mixed models, generalized mixed models, Spearman correlation, and Wilcoxon rank-sum tests. RESULTS Six-month-old Malian infants had significantly elevated sIgA (4.0× higher, P < 0.001), fecal myeloperoxidase (31.6× higher, P < 0.001), fecal α1-antitrypsin (1.8× higher, P = 0.006), and lower fecal neopterin (0.13× higher, P < 0.001) than the age-matched Nicaraguan infants. In the Nicaraguan rice bran cohort from 6 to 12 mo of age, there was a significant decrease in sIgA concentrations (0.4×, P < 0.05) and a correlation between sIgA and the EED marker α1-antitrypsin (0.523, P < 0.0001) at 12 mo of age. In Malian infants, daily rice bran ingestion resulted in decreased EED scores (0.71×, P = 0.02) and a stable sIgA concentration over time. The rice bran group of Malian infants also had correlation between sIgA and the EED marker neopterin (0.544, P < 0.001) at 12 mo of age and a significant (P < 0.05) increase in microbiota α-diversity at a younger age (9 mo with rice bran compared with 10 mo in control group), which supports earlier microbiota maturation. CONCLUSIONS These results support rice bran as a functional food ingredient targeting gut mucosa in children at high-risk of malnutrition.
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Affiliation(s)
- Allison C Vilander
- Department of Microbiology, Immunology, and Pathology; College of Veterinary Medicine and Veterinary Science; Colorado State University, Fort Collins, CO, USA
| | - Ann Hess
- Department of Statistics, Colorado State University, Fort Collins, CO, USA
| | - Zaid Abdo
- Department of Microbiology, Immunology, and Pathology; College of Veterinary Medicine and Veterinary Science; Colorado State University, Fort Collins, CO, USA
| | - Hend Ibrahim
- Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins, CO, USA,Department of Medical Biochemistry, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Lassina Doumbia
- Laboratoire de Biologie Moléculaire Appliquée, Campus de Badalabougou, Université des Sciences, des Techniques et des Technologies de Bamako, Bamako, Mali
| | - Seydou Douyon
- Laboratoire de Biologie Moléculaire Appliquée, Campus de Badalabougou, Université des Sciences, des Techniques et des Technologies de Bamako, Bamako, Mali
| | - Karim Koné
- Laboratoire de Biologie Moléculaire Appliquée, Campus de Badalabougou, Université des Sciences, des Techniques et des Technologies de Bamako, Bamako, Mali
| | - Abdoulaye Boré
- Laboratoire de Biologie Moléculaire Appliquée, Campus de Badalabougou, Université des Sciences, des Techniques et des Technologies de Bamako, Bamako, Mali
| | - Luis E Zambrana
- Center of Infectious Diseases, Department of Microbiology and Parasitology, Faculty of Medicine Sciences, National Autonomous University of Nicaragua, Leόn, Nicaragua
| | - Samuel Vilchez
- Center of Infectious Diseases, Department of Microbiology and Parasitology, Faculty of Medicine Sciences, National Autonomous University of Nicaragua, Leόn, Nicaragua
| | - Ousmane Koita
- Laboratoire de Biologie Moléculaire Appliquée, Campus de Badalabougou, Université des Sciences, des Techniques et des Technologies de Bamako, Bamako, Mali
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Sánchez Montalvo A, Gohy S, Rombaux P, Pilette C, Hox V. The Role of IgA in Chronic Upper Airway Disease: Friend or Foe? FRONTIERS IN ALLERGY 2022; 3:852546. [PMID: 35386640 PMCID: PMC8974816 DOI: 10.3389/falgy.2022.852546] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Accepted: 02/10/2022] [Indexed: 01/28/2023] Open
Abstract
Chronic upper airway inflammation is amongst the most prevalent chronic disease entities in the Western world with prevalence around 30% (rhinitis) and 11% (rhinosinusitis). Chronic rhinitis and rhinosinusitis may severely impair the quality of life, leading to a significant socio-economic burden. It becomes more and more clear that the respiratory mucosa which forms a physiological as well as chemical barrier for inhaled particles, plays a key role in maintaining homeostasis and driving disease. In a healthy state, the mucosal immune system provides protection against pathogens as well as maintains a tolerance toward non-harmful commensal microbes and benign environmental substances such as allergens. One of the most important players of the mucosal immune system is immunoglobulin (Ig) A, which is well-studied in gut research where it has emerged as a key factor in creating tolerance to potential food allergens and maintaining a healthy microbiome. Although, it is very likely that IgA plays a similar role at the level of the respiratory epithelium, very little research has been performed on the role of this protein in the airways, especially in chronic upper airway diseases. This review summarizes what is known about IgA in upper airway homeostasis, as well as in rhinitis and rhinosinusitis, including current and possible new treatments that may interfere with the IgA system. By doing so, we identify unmet needs in exploring the different roles of IgA in the upper airways required to find new biomarkers or therapeutic options for treating chronic rhinitis and rhinosinusitis.
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Affiliation(s)
- Alba Sánchez Montalvo
- Pole of Pneumology, ENT and Dermatology, Institute of Experimental and Clinical Research, Université Catholique de Louvain (UCLouvain), Brussels, Belgium
- Allergy and Clinical Immunology Research Group, Department of Microbiology, Immunology and Transplantation, KU Leuven, Leuven, Belgium
| | - Sophie Gohy
- Pole of Pneumology, ENT and Dermatology, Institute of Experimental and Clinical Research, Université Catholique de Louvain (UCLouvain), Brussels, Belgium
- Department of Pulmonology, Cliniques Universitaires Saint-Luc, Brussels, Belgium
- Cystic Fibrosis Reference Center, Cliniques Universitaires Saint-Luc, Brussels, Belgium
| | - Philippe Rombaux
- Department of Otorhinolaryngology, Cliniques Universitaires Saint-Luc, Brussels, Belgium
| | - Charles Pilette
- Pole of Pneumology, ENT and Dermatology, Institute of Experimental and Clinical Research, Université Catholique de Louvain (UCLouvain), Brussels, Belgium
- Department of Pulmonology, Cliniques Universitaires Saint-Luc, Brussels, Belgium
| | - Valérie Hox
- Pole of Pneumology, ENT and Dermatology, Institute of Experimental and Clinical Research, Université Catholique de Louvain (UCLouvain), Brussels, Belgium
- Department of Otorhinolaryngology, Cliniques Universitaires Saint-Luc, Brussels, Belgium
- *Correspondence: Valérie Hox
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Murugan SK, Bethapudi B, Raghunandhakumar S, Purusothaman D, Nithyanantham M, Mundkinajeddu D, Talkad MS. A flavonoid rich standardized extract of Glycyrrhiza glabra protects intestinal epithelial barrier function and regulates the tight-junction proteins expression. BMC Complement Med Ther 2022; 22:38. [PMID: 35130890 PMCID: PMC8822647 DOI: 10.1186/s12906-021-03500-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Accepted: 12/24/2021] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Intestinal epithelial barrier dysfunction predisposes to many gastrointestinal, metabolic, and psychological disorders. A flavonoid rich extract of Glycyrrhiza glabra (FREG) has previously been reported to possess anti-inflammatory, antioxidant, and antiulcer properties. AIM To investigate the effect of FREG (GutGard®) on restoring intestinal barrier function in tumor necrosis factor-alpha (TNF-α) stimulated human colonic adenocarcinoma cell monolayer (Caco-2) and 2,4,6-Trinitrobenzenesulfonic acid (TNBS) induced ulcerative colitis in rats. METHODS In in vitro, human intestinal Caco-2 cell monolayers were treated with TNF-α in the presence or absence of FREG and the paracellular permeability to FITC-conjugated 4-kD dextran (FD4) was measured to evaluate protection against the barrier dysfunction. In in vivo, intestinal barrier dysfunction was induced in male albino Wistar rats via intrarectal instillation of TNBS. Subsequently, the rats were treated orally with either FREG at 6.25, 12.5, and 25 mg/kg body weight, or Mesacol (250 mg/kg) for 5 days. On day 5, intestinal epithelial permeability was assessed with FD4 leakage into the serum. Also, colonic inflammation, colon morphology, histology and macroscopic score, weight to length ratio were evaluated. The activity of myeloperoxidase (MPO), TNF- α, secretory IgA levels and tight junction proteins expression were evaluated in rat's colon. RESULTS FREG protected the intestinal epithelial barrier integrity in human intestinal Caco-2 cells in vitro. FREG administration significantly improved the intestinal epithelial barrier function as evident from significant reduction in FD4 leakage. The colon morphology, histology score, macroscopic score, colon weight to length ratio also indicates beneficial effects of FREG on barrier function. In addition, FREG regulated the tight junction proteins, and markedly decreased TNF-α, MPO levels and significantly increased the secretory IgA levels in TNBS induced colitis rats. CONCLUSION The study findings support the protective action of FREG on intestinal epithelial barrier integrity indicating its potential in protecting from implications of leaky gut.
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Affiliation(s)
- Sasi Kumar Murugan
- Department of Pharmacology & Toxicology, R&D Centre, Natural Remedies Private Limited, Plot No. 5B Veerasandra Indl. Area 19th K. M. Stone Hosur road Electronic City Post, 560100, Bengaluru, Karnataka, India
| | - Bharathi Bethapudi
- Department of Pharmacology & Toxicology, R&D Centre, Natural Remedies Private Limited, Plot No. 5B Veerasandra Indl. Area 19th K. M. Stone Hosur road Electronic City Post, 560100, Bengaluru, Karnataka, India.
| | - Subramanian Raghunandhakumar
- Department of Pharmacology, Saveetha Dental College & Hospitals, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai, Tamil Nadu, India
| | - Divya Purusothaman
- Department of Pharmacology & Toxicology, R&D Centre, Natural Remedies Private Limited, Plot No. 5B Veerasandra Indl. Area 19th K. M. Stone Hosur road Electronic City Post, 560100, Bengaluru, Karnataka, India
| | - Muruganantham Nithyanantham
- Department of Pharmacology & Toxicology, R&D Centre, Natural Remedies Private Limited, Plot No. 5B Veerasandra Indl. Area 19th K. M. Stone Hosur road Electronic City Post, 560100, Bengaluru, Karnataka, India
| | - Deepak Mundkinajeddu
- Department of Pharmacology & Toxicology, R&D Centre, Natural Remedies Private Limited, Plot No. 5B Veerasandra Indl. Area 19th K. M. Stone Hosur road Electronic City Post, 560100, Bengaluru, Karnataka, India
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Liu S, Yin X, Hou C, Liu X, Ma H, Zhang X, Xu M, Xie Y, Li Y, Wang J. As a Staple Food Substitute, Oat and Buckwheat Compound Has Health-Promoting Effects for Diabetic Rats. Front Nutr 2022; 8:762277. [PMID: 35004803 PMCID: PMC8740054 DOI: 10.3389/fnut.2021.762277] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2021] [Accepted: 11/29/2021] [Indexed: 11/17/2022] Open
Abstract
Dietary intervention is crucial for the prevention and control of diabetes. China has the largest diabetic population in the world, yet no one dietary strategy matches the eating habits of the Chinese people. To explore an effective and acceptable dietary pattern, this study uses oat and buckwheat compound (OBC) as a staple food substitute and explored its effects on diabetic Sprague–Dawley rats. The model of diabetic rats was established by combining high-calorie feed and streptozotocin (STZ) injection. The dietary intervention for the seven groups, including a normal control group, a model control group, a metformin control group, a wheat flour control group, and three OBC groups with different doses, started from the beginning of the experiment and lasted for 11 weeks, two consecutive injections of STZ in small doses were operated at the 6th week. General states, glucose metabolism, and lipid metabolism indexes were measured. Antioxidant and inflammatory indexes and pathologic changes of kidney and liver tissues were tested. Changes in kidney and ileum ultramicrostructure were detected. What's more, ileal epithelial tight junction proteins and gut microbiota were analyzed. Significant decreases in fasting blood glucose (FBG), glucose tolerance, serum insulin, and insulin resistance were observed in rats intervened with OBC, and these rats also showed a higher level of superoxide dismutase (SOD) together with improved lipid metabolism, attenuated inflammation, and liver and kidney injuries. In addition, in OBC groups, the intestinal barrier was improved, and the disturbance of gut microbiota was reduced. These results suggest that OBC has health-promoting effects for diabetic rats, and since oat and buckwheat are traditionally consumed grains in China, OBC could be a potential and easy-to-accept staple food substitute for the dietary pattern for Chinese.
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Affiliation(s)
- Siqi Liu
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing, China
| | - Xueqian Yin
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing, China
| | - Chao Hou
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing, China
| | - Xinran Liu
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing, China
| | - Huijuan Ma
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing, China
| | - Xiaoxuan Zhang
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing, China
| | - Meihong Xu
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing, China
| | - Ying Xie
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Peking University, Beijing, China
| | - Yong Li
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing, China
| | - Junbo Wang
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing, China
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Xue L, Li Z, Xue J, Wang H, Wu T, Liu R, Sui W, Zhang M. Lactobacillus acidophilus LA85 ameliorates cyclophosphamide-induced immunosuppression by modulating Notch and TLR4/NF-κB signal pathways and remodeling the gut microbiota. Food Funct 2022; 13:8107-8118. [DOI: 10.1039/d1fo04331e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
With the prevalence of coronavirus disease 2019 (COVID-19), we found that probiotics may be effective in organism immune recovery and remodeling of gut microbiota in their patients and recovered individuals....
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29
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Wang K, Zhang Z, Mo ZS, Yang XH, Lin BL, Peng L, Xu Y, Lei CY, Zhuang XD, Lu L, Yang RF, Chen T, Gao ZL. Gut microbiota as prognosis markers for patients with HBV-related acute-on-chronic liver failure. Gut Microbes 2021; 13:1-15. [PMID: 34006193 PMCID: PMC8143260 DOI: 10.1080/19490976.2021.1921925] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
The gut microbiota in the hepatitis B virus related acute-on-chronic liver failure (HBV-ACLF) is poorly defined. We aim to uncover the characteristics of the gut microbiota in HBV-ACLF and in other HBV associated pathologies. We analyzed the gut microbiome in patients with HBV-ACLF or other HBV associated pathologies and healthy individuals by 16S rRNA sequencing and metagenomic sequencing of fecal samples. 212 patients with HBV-ACLF, 252 with chronic hepatitis B (CHB), 162 with HBV-associated cirrhosis (HBV-LC) and 877 healthy individuals were recruited for the study. CHB and HBV-LC patients are grouped as HBV-Other. We discovered striking differences in the microbiome diversity between the HBV-ACLF, HBV-Other and healthy groups using 16S rRNA sequencing. The ratio of cocci to bacilli was significantly elevated in the HBV-ACLF group compared with healthy group. Further analysis within the HBV-ACLF group identified 52 genera showing distinct richness within the group where Enterococcus was enriched in the progression group whilst Faecalibacterium was enriched in the regression group. Metagenomic sequencing validated these findings and further uncovered an enrichment of Lactobacillus casei paracasei in progression group, while Alistipes senegalensis, Faecalibacterium prausnitzii and Parabacteroides merdae dominated the regression group. Importantly, our analysis revealed that there was a rapid increase of Enterococcus faecium during the progression of HBV-ACLF. The gut microbiota displayed distinct composition at different phases of HBV-ACLF. High abundance of Enterococcus is associated with progression while that of Faecalibacterium is associated with regression of HBV-ACLF. Therefore, the microbiota features hold promising potential as prognostic markers for HBV-ACLF.
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Affiliation(s)
- Ke Wang
- Department of Infectious Diseases and Guangdong Key Laboratory of Liver Disease Research, Third Affiliated Hospital of Sun Yat-sen University, Key Laboratory of Tropical Disease Control (Sun Yat-Sen University), Ministry of Education, Guangzhou, Guangdong, China
| | - Zhao Zhang
- Research and Development Department, Guangdong Longsee Biomedical Corporation, Guangzhou, Guangdong, China
| | - Zhi-Shuo Mo
- Department of Infectious Diseases and Guangdong Key Laboratory of Liver Disease Research, Third Affiliated Hospital of Sun Yat-sen University, Key Laboratory of Tropical Disease Control (Sun Yat-Sen University), Ministry of Education, Guangzhou, Guangdong, China
| | - Xiao-Hua Yang
- Department of Infectious Diseases and Guangdong Key Laboratory of Liver Disease Research, Third Affiliated Hospital of Sun Yat-sen University, Key Laboratory of Tropical Disease Control (Sun Yat-Sen University), Ministry of Education, Guangzhou, Guangdong, China
| | - Bing-Liang Lin
- Department of Infectious Diseases and Guangdong Key Laboratory of Liver Disease Research, Third Affiliated Hospital of Sun Yat-sen University, Key Laboratory of Tropical Disease Control (Sun Yat-Sen University), Ministry of Education, Guangzhou, Guangdong, China
| | - Liang Peng
- Department of Infectious Diseases and Guangdong Key Laboratory of Liver Disease Research, Third Affiliated Hospital of Sun Yat-sen University, Key Laboratory of Tropical Disease Control (Sun Yat-Sen University), Ministry of Education, Guangzhou, Guangdong, China
| | - Yang Xu
- Research and Development Department, Guangdong Longsee Biomedical Corporation, Guangzhou, Guangdong, China
| | - Chun-Yan Lei
- Research and Development Department, Guangdong Longsee Biomedical Corporation, Guangzhou, Guangdong, China
| | - Xiao-Dong Zhuang
- Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Ling Lu
- Hepatobiliary Center, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Rui-Fu Yang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China,Rui-Fu Yang State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Tao Chen
- Research and Development Department, Guangdong Longsee Biomedical Corporation, Guangzhou, Guangdong, China,Tao Chen Research and Development Department, Guangdong Longsee Biomedical Corporation, Guangzhou, Guangdong, China
| | - Zhi-Liang Gao
- Department of Infectious Diseases and Guangdong Key Laboratory of Liver Disease Research, Third Affiliated Hospital of Sun Yat-sen University, Key Laboratory of Tropical Disease Control (Sun Yat-Sen University), Ministry of Education, Guangzhou, Guangdong, China,CONTACT Zhi-Liang Gao Department of Infectious Diseases and Guangdong Key Laboratory of Liver Disease Research, Third Affiliated Hospital of Sun Yat-sen University, Key Laboratory of Tropical Disease Control (Sun Yat-Sen University), Ministry of Education, Guangzhou, Guangdong, China
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Barbara G, Barbaro MR, Fuschi D, Palombo M, Falangone F, Cremon C, Marasco G, Stanghellini V. Corrigendum: Inflammatory and Microbiota-Related Regulation of the Intestinal Epithelial Barrier. Front Nutr 2021; 8:790387. [PMID: 34790692 PMCID: PMC8591313 DOI: 10.3389/fnut.2021.790387] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Accepted: 10/07/2021] [Indexed: 12/18/2022] Open
Affiliation(s)
- Giovanni Barbara
- IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy.,Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Maria Raffaella Barbaro
- IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy.,Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Daniele Fuschi
- IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy.,Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Marta Palombo
- IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy.,Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Francesca Falangone
- Medical-Surgical Department of Clinical Sciences and Translational Medicine, University Sapienza, Rome, Italy
| | - Cesare Cremon
- IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy.,Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Giovanni Marasco
- IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy.,Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Vincenzo Stanghellini
- IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy.,Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
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Lokken-Toyli KL, de Steenhuijsen Piters WAA, Zangari T, Martel R, Kuipers K, Shopsin B, Loomis C, Bogaert D, Weiser JN. Decreased production of epithelial-derived antimicrobial molecules at mucosal barriers during early life. Mucosal Immunol 2021; 14:1358-1368. [PMID: 34465896 PMCID: PMC8542637 DOI: 10.1038/s41385-021-00438-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 07/12/2021] [Accepted: 08/01/2021] [Indexed: 02/04/2023]
Abstract
Young age is a risk factor for respiratory and gastrointestinal infections. Here, we compared infant and adult mice to identify age-dependent mechanisms that drive susceptibility to mucosal infections during early life. Transcriptional profiling of the upper respiratory tract (URT) epithelium revealed significant dampening of early life innate mucosal defenses. Epithelial-mediated production of the most abundant antimicrobial molecules, lysozyme, and lactoferrin, and the polymeric immunoglobulin receptor (pIgR), responsible for IgA transcytosis, was expressed in an age-dependent manner. This was attributed to delayed functional development of serous cells. Absence of epithelial-derived lysozyme and the pIgR was also observed in the small intestine during early life. Infection of infant mice with lysozyme-susceptible strains of Streptococcus pneumoniae or Staphylococcus aureus in the URT or gastrointestinal tract, respectively, demonstrated an age-dependent regulation of lysozyme enzymatic activity. Lysozyme derived from maternal milk partially compensated for the reduction in URT lysozyme activity of infant mice. Similar to our observations in mice, expression of lysozyme and the pIgR in nasopharyngeal samples collected from healthy human infants during the first year of life followed an age-dependent regulation. Thus, a global pattern of reduced antimicrobial and IgA-mediated defenses may contribute to increased susceptibility of young children to mucosal infections.
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Affiliation(s)
- Kristen L. Lokken-Toyli
- Department of Microbiology, New York University School of Medicine, New York, New York USA.,for correspondence: Kristen L. Lokken-Toyli, PhD, New York University School of Medicine, Alexandria Center for Life Sciences - West Tower, 430 East 29th Street, Room 560, New York, NY 10016, Tel: (212) 263-1080, Fax: (646) 501-4645,
| | - Wouter A. A. de Steenhuijsen Piters
- Department of Paediatric Immunology and Infectious Diseases, Wilhelmina Children’s Hospital/University Medical Center Utrecht, Lundlaan 6, 3584 EA Utrecht, the Netherlands; National Institute for Public Health and the Environment, Antonie van Leeuwenhoeklaan 9, 3721 MA Bilthoven, the Netherlands
| | - Tonia Zangari
- Department of Microbiology, New York University School of Medicine, New York, New York USA
| | - Rachel Martel
- Department of Microbiology, New York University School of Medicine, New York, New York USA
| | - Kirsten Kuipers
- Department of Microbiology, New York University School of Medicine, New York, New York USA
| | - Bo Shopsin
- Department of Microbiology, New York University School of Medicine, New York, NY 10016, USA; Division of Infectious Diseases, Department of Medicine, NYU School of Medicine, New York, NY 10016, USA
| | - Cynthia Loomis
- Department of Pathology, New York University School of Medicine, New York, New York USA
| | - Debby Bogaert
- Department of Paediatric Immunology and Infectious Diseases, Wilhelmina Children’s Hospital/University Medical Center Utrecht, Lundlaan 6, 3584 EA Utrecht, the Netherlands; National Institute for Public Health and the Environment, Antonie van Leeuwenhoeklaan 9, 3721 MA Bilthoven, the Netherlands; University of Edinburgh Centre for Inflammation Research, Queen’s Medical Research Institute, University of Edinburgh, 47 Little France Crescent, Edinburgh EH16 4TJ, UK.
| | - Jeffrey N. Weiser
- Department of Microbiology, New York University School of Medicine, New York, New York USA
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32
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Barbara G, Barbaro MR, Fuschi D, Palombo M, Falangone F, Cremon C, Marasco G, Stanghellini V. Inflammatory and Microbiota-Related Regulation of the Intestinal Epithelial Barrier. Front Nutr 2021; 8:718356. [PMID: 34589512 PMCID: PMC8475765 DOI: 10.3389/fnut.2021.718356] [Citation(s) in RCA: 120] [Impact Index Per Article: 40.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Accepted: 08/12/2021] [Indexed: 12/19/2022] Open
Abstract
The intestinal epithelial barrier (IEB) is one of the largest interfaces between the environment and the internal milieu of the body. It is essential to limit the passage of harmful antigens and microorganisms and, on the other side, to assure the absorption of nutrients and water. The maintenance of this delicate equilibrium is tightly regulated as it is essential for human homeostasis. Luminal solutes and ions can pass across the IEB via two main routes: the transcellular pathway or the paracellular pathway. Tight junctions (TJs) are a multi-protein complex responsible for the regulation of paracellular permeability. TJs control the passage of antigens through the IEB and have a key role in maintaining barrier integrity. Several factors, including cytokines, gut microbiota, and dietary components are known to regulate intestinal TJs. Gut microbiota participates in several human functions including the modulation of epithelial cells and immune system through the release of several metabolites, such as short-chain fatty acids (SCFAs). Mediators released by immune cells can induce epithelial cell damage and TJs dysfunction. The subsequent disruption of the IEB allows the passage of antigens into the mucosa leading to further inflammation. Growing evidence indicates that dysbiosis, immune activation, and IEB dysfunction have a role in several diseases, including irritable bowel syndrome (IBS), inflammatory bowel disease (IBD), and gluten-related conditions. Here we summarize the interplay between the IEB and gut microbiota and mucosal immune system and their involvement in IBS, IBD, and gluten-related disorders.
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Affiliation(s)
- Giovanni Barbara
- IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy.,Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Maria Raffaella Barbaro
- IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy.,Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Daniele Fuschi
- IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy.,Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Marta Palombo
- IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy.,Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Francesca Falangone
- Medical-Surgical Department of Clinical Sciences and Translational Medicine, University Sapienza, Rome, Italy
| | - Cesare Cremon
- IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy.,Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Giovanni Marasco
- IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy.,Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Vincenzo Stanghellini
- IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy.,Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
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Bang YJ, Hu Z, Li Y, Gattu S, Ruhn KA, Raj P, Herz J, Hooper LV. Serum amyloid A delivers retinol to intestinal myeloid cells to promote adaptive immunity. Science 2021; 373:eabf9232. [PMID: 34529485 DOI: 10.1126/science.abf9232] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
[Figure: see text].
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Affiliation(s)
- Ye-Ji Bang
- Department of Immunology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Zehan Hu
- Department of Immunology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Yun Li
- Department of Immunology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Sureka Gattu
- Department of Immunology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Kelly A Ruhn
- Department of Immunology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Prithvi Raj
- Department of Immunology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Joachim Herz
- Department of Molecular Genetics, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA.,Center for Translational Neurodegeneration Research, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA.,Department of Neurology and Neurotherapeutics, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA.,Department of Neuroscience, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Lora V Hooper
- Department of Immunology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA.,Howard Hughes Medical Institute, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
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34
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Athayde LA, de Aguiar SLF, Miranda MCG, Brito RVJ, de Faria AMC, Nobre SAM, Andrade MC. Lactococcus lactis Administration Modulates IgE and IL-4 Production and Promotes Enterobacteria Growth in the Gut from Ethanol-Intake Mice. Protein Pept Lett 2021; 28:1164-1179. [PMID: 34315363 DOI: 10.2174/0929866528666210727102019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 05/25/2021] [Accepted: 05/28/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND It is well known that alcohol can trigger inflammatory effects in the gastrointestinal tract (GIT) interfering with mucosal homeostasis. OBJECTIVE This study evaluated the effectiveness of Lactococcus lactis treatment in controlling the increase in molecular biomarkers related to allergic inflammation, and the effect on the diversity and abundance of the Enterobacteriaceae family in the GIT after high-dose acute administration of ethanol. METHODS Mice received ethanol or saline solution by gavage for four consecutive days, and 24 h after the last administration the animals were given L. lactis or M17 broth orally ad libitum for two consecutive days. The animals were subsequently sacrificed and dissected. RESULTS L. lactis treatment was able to restore basal levels of secretory immunoglobulin A in the gastric mucosa, serum total immunoglobulin E, interleukin (IL)-4 production in gastric and intestinal tissues, and IL-10 levels in gastric tissue. L. lactis treatment encouraged the diversification of the Enterobacteriaceae population, particularly the commensal species, in the GIT. CONCLUSION This research opens a field of studies regarding the modulatory effect of L. lactis on immunological and microbial changes induced after alcohol intake.
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Roles of Eicosanoids in Regulating Inflammation and Neutrophil Migration as an Innate Host Response to Bacterial Infections. Infect Immun 2021; 89:e0009521. [PMID: 34031130 DOI: 10.1128/iai.00095-21] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Eicosanoids are lipid-based signaling molecules that play a unique role in innate immune responses. The multiple types of eicosanoids, such as prostaglandins (PGs) and leukotrienes (LTs), allow the innate immune cells to respond rapidly to bacterial invaders. Bacterial pathogens alter cyclooxygenase (COX)-derived prostaglandins (PGs) in macrophages, such as PGE2 15d-PGJ2, and lipoxygenase (LOX)-derived leukotriene LTB4, which has chemotactic functions. The PG synthesis and secretion are regulated by substrate availability of arachidonic acid and by the COX-2 enzyme, and the expression of this protein is regulated at multiple levels, both transcriptionally and posttranscriptionally. Bacterial pathogens use virulence strategies such as type three secretion systems (T3SSs) to deliver virulence factors altering the expression of eicosanoid-specific biosynthetic enzymes, thereby modulating the host response to bacterial lipopolysaccharides (LPS). Recent advances have identified a novel role of eicosanoids in inflammasome activation during intracellular infection with bacterial pathogens. Specifically, PGE2 was found to enhance inflammasome activation, driving the formation of pore-induced intracellular traps (PITs), thus trapping bacteria from escaping the dying cell. Finally, eicosanoids and IL-1β released from macrophages are implicated in the efferocytosis of neighboring neutrophils. Neutrophils play an essential role in phagocytosing and degrading PITs and associated bacteria to restore homeostasis. This review focuses on the novel functions of host-derived eicosanoids in the host-pathogen interactions.
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Zhang C, Franklin CL, Ericsson AC. Consideration of Gut Microbiome in Murine Models of Diseases. Microorganisms 2021; 9:microorganisms9051062. [PMID: 34068994 PMCID: PMC8156714 DOI: 10.3390/microorganisms9051062] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 04/29/2021] [Accepted: 05/12/2021] [Indexed: 12/12/2022] Open
Abstract
The gut microbiome (GM), a complex community of bacteria, viruses, protozoa, and fungi located in the gut of humans and animals, plays significant roles in host health and disease. Animal models are widely used to investigate human diseases in biomedical research and the GM within animal models can change due to the impact of many factors, such as the vendor, husbandry, and environment. Notably, variations in GM can contribute to differences in disease model phenotypes, which can result in poor reproducibility in biomedical research. Variation in the gut microbiome can also impact the translatability of animal models. For example, standard lab mice have different pathogen exposure experiences when compared to wild or pet store mice. As humans have antigen experiences that are more similar to the latter, the use of lab mice with more simplified microbiomes may not yield optimally translatable data. Additionally, the literature describes many methods to manipulate the GM and differences between these methods can also result in differing interpretations of outcomes measures. In this review, we focus on the GM as a potential contributor to the poor reproducibility and translatability of mouse models of disease. First, we summarize the important role of GM in host disease and health through different gut–organ axes and the close association between GM and disease susceptibility through colonization resistance, immune response, and metabolic pathways. Then, we focus on the variation in the microbiome in mouse models of disease and address how this variation can potentially impact disease phenotypes and subsequently influence research reproducibility and translatability. We also discuss the variations between genetic substrains as potential factors that cause poor reproducibility via their effects on the microbiome. In addition, we discuss the utility of complex microbiomes in prospective studies and how manipulation of the GM through differing transfer methods can impact model phenotypes. Lastly, we emphasize the need to explore appropriate methods of GM characterization and manipulation.
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Affiliation(s)
- Chunye Zhang
- Department of Veterinary Pathobiology, University of Missouri, Columbia, MO 65201, USA;
| | - Craig L. Franklin
- Department of Veterinary Pathobiology, University of Missouri, Columbia, MO 65201, USA;
- Mutant Mouse Resource and Research Center, University of Missouri, Columbia, MO 65201, USA
- Metagenomics Center, University of Missouri, Columbia, MO 65201, USA
- Correspondence: (C.L.F.); (A.C.E.)
| | - Aaron C. Ericsson
- Department of Veterinary Pathobiology, University of Missouri, Columbia, MO 65201, USA;
- Mutant Mouse Resource and Research Center, University of Missouri, Columbia, MO 65201, USA
- Metagenomics Center, University of Missouri, Columbia, MO 65201, USA
- Correspondence: (C.L.F.); (A.C.E.)
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B Cells and Microbiota in Autoimmunity. Int J Mol Sci 2021; 22:ijms22094846. [PMID: 34063669 PMCID: PMC8125537 DOI: 10.3390/ijms22094846] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Accepted: 04/27/2021] [Indexed: 12/12/2022] Open
Abstract
Trillions of microorganisms inhabit the mucosal membranes maintaining a symbiotic relationship with the host's immune system. B cells are key players in this relationship because activated and differentiated B cells produce secretory immunoglobulin A (sIgA), which binds commensals to preserve a healthy microbial ecosystem. Mounting evidence shows that changes in the function and composition of the gut microbiota are associated with several autoimmune diseases suggesting that an imbalanced or dysbiotic microbiota contributes to autoimmune inflammation. Bacteria within the gut mucosa may modulate autoimmune inflammation through different mechanisms from commensals ability to induce B-cell clones that cross-react with host antigens or through regulation of B-cell subsets' capacity to produce cytokines. Commensal signals in the gut instigate the differentiation of IL-10 producing B cells and IL-10 producing IgA+ plasma cells that recirculate and exert regulatory functions. While the origin of the dysbiosis in autoimmunity is unclear, compelling evidence shows that specific species have a remarkable influence in shaping the inflammatory immune response. Further insight is necessary to dissect the complex interaction between microorganisms, genes, and the immune system. In this review, we will discuss the bidirectional interaction between commensals and B-cell responses in the context of autoimmune inflammation.
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38
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Guo J, Han X, Huang W, You Y, Jicheng Z. Interaction between IgA and gut microbiota and its role in controlling metabolic syndrome. Obes Rev 2021; 22:e13155. [PMID: 33150692 DOI: 10.1111/obr.13155] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 09/21/2020] [Accepted: 09/22/2020] [Indexed: 02/06/2023]
Abstract
Immunoglobulin A (IgA) is the most abundant immunoglobulin isotype secreted into the mucosal tissues, mainly intestinal mucus. Humans can produce several grams of IgA every day, accounting for three quarters of the body's total immunoglobulin content. IgA, together with mucus and antimicrobial peptides, forms the first line of defence for intestinal epithelial cells, protecting them from a significant number of intestinal antigens. IgA also plays a principal role in controlling the gut microbiota (GM), and disruption in IgA can result in dysbiosis, such as the enrichment of Proteobacteria, which are generally bound by IgA. Proteobacteria overexpansion is also usually seen in obesity and colitis. Consistent with this, IgA dysfunction frequently results in metabolic syndrome (MetS), including conditions such as obesity, adiposity, insulin resistance, and inflammation. In contrast, enhanced IgA function can improve, and even prevent, MetS. Interactions among IgA, GM, and metabolism provide a promising avenue to combat MetS.
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Affiliation(s)
- Jielong Guo
- College of Food Science and Nutritional Engineering, Beijing Key Laboratory of Viticulture and Enology, China Agricultural University, Beijing, China
| | - Xue Han
- College of Food Science and Nutritional Engineering, Beijing Key Laboratory of Viticulture and Enology, China Agricultural University, Beijing, China
| | - Weidong Huang
- College of Food Science and Nutritional Engineering, Beijing Key Laboratory of Viticulture and Enology, China Agricultural University, Beijing, China
| | - Yilin You
- College of Food Science and Nutritional Engineering, Beijing Key Laboratory of Viticulture and Enology, China Agricultural University, Beijing, China
| | - Zhan Jicheng
- College of Food Science and Nutritional Engineering, Beijing Key Laboratory of Viticulture and Enology, China Agricultural University, Beijing, China
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Atyeo C, Alter G. The multifaceted roles of breast milk antibodies. Cell 2021; 184:1486-1499. [PMID: 33740451 DOI: 10.1016/j.cell.2021.02.031] [Citation(s) in RCA: 100] [Impact Index Per Article: 33.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 01/07/2021] [Accepted: 02/12/2021] [Indexed: 12/20/2022]
Abstract
Neonates are born with an immature immune system and rely on the transfer of immunity from their mothers. Maternal antibodies are transferred via the placenta and breast milk. Although the role of placentally transferred immunoglobulin G (IgG) is established, less is known about the selection of antibodies transferred via breast milk and the mechanisms by which they provide protection against neonatal disease. Evidence suggests that breast milk antibodies play multifaceted roles, preventing infection and supporting the selection of commensals and tolerizing immunity during infancy. Here, we discuss emerging data related to the importance of breast milk antibodies in neonatal immunity and development.
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Affiliation(s)
- Caroline Atyeo
- Ragon Institute of MGH, MIT, and Harvard, Cambridge, MA, USA; PhD Program in Virology, Division of Medical Sciences, Harvard University, Boston, MA, USA
| | - Galit Alter
- Ragon Institute of MGH, MIT, and Harvard, Cambridge, MA, USA.
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40
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de Alwis R, Liang L, Taghavian O, Werner E, The HC, Thu TNH, Duong VT, Davies DH, Felgner PL, Baker S. The identification of novel immunogenic antigens as potential Shigella vaccine components. Genome Med 2021; 13:8. [PMID: 33451348 PMCID: PMC7809897 DOI: 10.1186/s13073-020-00824-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Accepted: 12/18/2020] [Indexed: 11/21/2022] Open
Abstract
BACKGROUND Shigella is a major diarrheal pathogen for which there is presently no vaccine. Whole genome sequencing provides the ability to predict and derive novel antigens for use as vaccines. Here, we aimed to identify novel immunogenic Shigella antigens that could serve as Shigella vaccine candidates, either alone, or when conjugated to Shigella O-antigen. METHODS Using a reverse vaccinology approach, where genomic analysis informed the Shigella immunome via an antigen microarray, we aimed to identify novel immunogenic Shigella antigens. A core genome analysis of Shigella species, pathogenic and non-pathogenic Escherichia coli, led to the selection of 234 predicted immunogenic Shigella antigens. These antigens were expressed and probed with acute and convalescent serum from microbiologically confirmed Shigella infections. RESULTS Several Shigella antigens displayed IgG and IgA seroconversion, with no difference in sero-reactivity across by sex or age. IgG sero-reactivity to key Shigella antigens was observed at birth, indicating transplacental antibody transfer. Six antigens (FepA, EmrK, FhuA, MdtA, NlpB, and CjrA) were identified in in vivo testing as capable of producing binding IgG and complement-mediated bactericidal antibody. CONCLUSIONS These findings provide six novel immunogenic Shigella proteins that could serve as candidate vaccine antigens, species-specific carrier proteins, or targeted adjuvants.
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Affiliation(s)
- Ruklanthi de Alwis
- Program in Emerging Infectious Diseases, Duke-NUS Medical School, Singapore, Singapore
- Viral Research and Experimental Medicine Centre, SingHealth Duke-NUS Academic Medical Centre, Singapore, Singapore
| | - Li Liang
- Vaccine Research & Development Center, School of Medicine, University of California Irvine, Irvine, CA, USA
| | - Omid Taghavian
- Vaccine Research & Development Center, School of Medicine, University of California Irvine, Irvine, CA, USA
| | - Emma Werner
- Laboratory of Molecular Biology, Cambridge Biomedical Campus, Cambridge, UK
| | - Hao Chung The
- The Hospital for Tropical Diseases, Wellcome Trust Major Overseas Programme, Oxford University Clinical Research Unit, Ho Chi Minh City, Vietnam
| | - Trang Nguyen Hoang Thu
- The Hospital for Tropical Diseases, Wellcome Trust Major Overseas Programme, Oxford University Clinical Research Unit, Ho Chi Minh City, Vietnam
| | - Vu Thuy Duong
- The Hospital for Tropical Diseases, Wellcome Trust Major Overseas Programme, Oxford University Clinical Research Unit, Ho Chi Minh City, Vietnam
| | - D Huw Davies
- Vaccine Research & Development Center, School of Medicine, University of California Irvine, Irvine, CA, USA
| | - Philip L Felgner
- Vaccine Research & Development Center, School of Medicine, University of California Irvine, Irvine, CA, USA
| | - Stephen Baker
- Cambridge Institute of Therapeutic Immunology & Infectious Disease (CITIID), Level 5, Jeffery Cheah Biomedical Centre, Cambridge Biomedical Campus, University of Cambridge, Cambridge, CB2 0AW, UK.
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Inojosa H, Eisele J, Proschmann U, Zeissig S, Akgün K, Ziemssen T. No Impact of Long-Term Fingolimod Treatment on Fecal Secretory Immunoglobulin A Levels in Patients With Multiple Sclerosis. Front Cell Dev Biol 2020; 8:567659. [PMID: 33102475 PMCID: PMC7546410 DOI: 10.3389/fcell.2020.567659] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Accepted: 09/07/2020] [Indexed: 12/21/2022] Open
Abstract
Background Fingolimod (FTY) is a sphingosine 1 phosphate (S1P) agonist with significant effects on immune cell distribution used as an effective disease modifying therapy in multiple sclerosis (MS) patients. Animal studies have demonstrated that a dysregulation of egress of murine secretory Immunglobulin A (sIgA)+ plasmablasts from Peyer’s patches in FTY-treated mice reduced fecal sIgA levels. Alterations in intestinal levels of sIgA could modify the gut microbiome and homeostasis in humans. We analyzed the effect of FTY on the fecal and salivary sIgA levels as marker of the humoral immune system in the gut. Methods Twenty five people with confirmed MS diagnosis according to 2010 revised McDonald’s criteria and on long-term continuous treatment at the MS Center in Dresden, Germany were enrolled in this exploratory cross-sectional study. Fecal and salivary sIgA were analyzed after at least 12 months of treatment with FTY or Glatiramer acetate (GA). Results Fifteen MS patients on FTY and 10 on GA participated in this study. The mean fecal sIgA concentration of both groups was not decreased compared to reference values and did not demonstrate significant differences between them (FTY 3323.13 μg/g +/− 2094.72; GA 2040.65 μg/g +/− 1709.07). A similar pattern was seen in the salivary sIgA and serum immunoglobulins levels. Conclusion In this pilot study, we could not confirm the decrease of fecal sIgA after a long-term treatment with FTY. Further longitudinal studies should evaluate the effects of MS treatments on the gut immune system in more detail.
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Affiliation(s)
- Hernan Inojosa
- Department of Neurology, Multiple Sclerosis Center, Center of Clinical Neuroscience, University Hospital Carl Gustav Carus, Dresden University of Technology, Dresden, Germany
| | - Judith Eisele
- Department of Neurology, Multiple Sclerosis Center, Center of Clinical Neuroscience, University Hospital Carl Gustav Carus, Dresden University of Technology, Dresden, Germany
| | - Undine Proschmann
- Department of Neurology, Multiple Sclerosis Center, Center of Clinical Neuroscience, University Hospital Carl Gustav Carus, Dresden University of Technology, Dresden, Germany
| | - Sebastian Zeissig
- Department of Medicine I, University Hospital Carl Gustav Carus, Dresden University of Technology, Dresden, Germany
| | - Katja Akgün
- Department of Neurology, Multiple Sclerosis Center, Center of Clinical Neuroscience, University Hospital Carl Gustav Carus, Dresden University of Technology, Dresden, Germany
| | - Tjalf Ziemssen
- Department of Neurology, Multiple Sclerosis Center, Center of Clinical Neuroscience, University Hospital Carl Gustav Carus, Dresden University of Technology, Dresden, Germany
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42
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Gut Microbiota and Immune System Interactions. Microorganisms 2020; 8:microorganisms8101587. [PMID: 33076307 PMCID: PMC7602490 DOI: 10.3390/microorganisms8101587] [Citation(s) in RCA: 332] [Impact Index Per Article: 83.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 10/01/2020] [Accepted: 10/14/2020] [Indexed: 02/07/2023] Open
Abstract
Dynamic interactions between gut microbiota and a host’s innate and adaptive immune systems play key roles in maintaining intestinal homeostasis and inhibiting inflammation. The gut microbiota metabolizes proteins and complex carbohydrates, synthesize vitamins, and produce an enormous number of metabolic products that can mediate cross-talk between gut epithelial and immune cells. As a defense mechanism, gut epithelial cells produce a mucosal barrier to segregate microbiota from host immune cells and reduce intestinal permeability. An impaired interaction between gut microbiota and the mucosal immune system can lead to an increased abundance of potentially pathogenic gram-negative bacteria and their associated metabolic changes, disrupting the epithelial barrier and increasing susceptibility to infections. Gut dysbiosis, or negative alterations in gut microbial composition, can also dysregulate immune responses, causing inflammation, oxidative stress, and insulin resistance. Over time, chronic dysbiosis and the translocation of bacteria and their metabolic products across the mucosal barrier may increase prevalence of type 2 diabetes, cardiovascular disease, inflammatory bowel disease, autoimmune disease, and a variety of cancers. In this paper, we highlight the pivotal role gut microbiota and their metabolites (short-chain fatty acids (SCFAs)) play in mucosal immunity.
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Arias I, Herrera D, Bautista-Molano W, Bello-Gualtero JM, De Avila J, Salas-Cuestas F, Romero-Sánchez C. Increasing of SIgA serum levels may reflect subclinical intestinal involvement in non-radiographic axial and peripheral spondyloarthritis. Clin Rheumatol 2020; 40:1343-1351. [PMID: 32876782 DOI: 10.1007/s10067-020-05369-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 07/23/2020] [Accepted: 08/24/2020] [Indexed: 10/23/2022]
Abstract
OBJECTIVE The evidence shows that previous infection with enteric pathogens is a requirement to develop pSpA. Based on our previous results, variances on regulation of SIgA might influence SpA activity; thus, the aim of this study was to correlate the levels of SIgA, IgA against some enteric bacteria, and IL-17, IL-21, and IL-6 with clinical features in a group of SpA patients. METHODS Twenty-six pSpA, 20 nr-axSpA, 60 healthy volunteers (HV), and 34 patients with inflammatory bowel diseases (IBD) were included. All subjects were assessed to measure SIgA, total and specific IgA for enteric bacteria, and IL-17, IL-21, and IL-6 levels and clinical variables. For SpA patients, the diagnosis was verified 5 years after first evaluation to assess the risk of developing r-axSpA. RESULTS SIgA levels were significantly higher in SpA patients than in HV and IBD (p < 0.0001 and p = 0.047, respectively). However, no differences for SIgA neither total IgA were found among the SpA subtypes (p = 0.624). Only IL-6 was higher in SpA than HV (p = 0.013). An inverse correlation was demonstrated for SIgA and BASFI (r: - 0.45; p = 0.003), BASDAI (r: - 0.39; p = 0.0123), ASDAS-CRP (r: - 0.37; p = 0.014), and ASDAS-ESR (r: - 0.45; p = 0.0021). There was no evidence of risk of developing r-axSpA in patients who previously showed high levels of serum antibodies. CONCLUSION The results show that pSpA as well as nr-axSpA share a similar SIgA-intestinal involvement independently of a previous infection. This suggests that serum SIgA increases are evidence of subclinical intestinal compromise which could have influence on disease activity but not in this progression. Key Point • The levels of SIgA, IgA against some enteric bacteria, and IL-17, IL-21, and IL-6 are correlated with clinical features in a group of SpA patients.
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Affiliation(s)
- Ivonne Arias
- Instituto de Genética Humana, School of Medicine, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Daniel Herrera
- Instituto de Genética Humana, School of Medicine, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Wilson Bautista-Molano
- Rheumatology and Immunology Department / Clinical Immunology Group School of Medicine, Hospital Militar Central, Transversal 3ª # 49-00, Bogotá, 110231, Colombia.,Cellular and Molecular Immunology Group/InmuBo, Universidad El Bosque, Bogotá, Colombia
| | - Juan Manuel Bello-Gualtero
- Rheumatology and Immunology Department / Clinical Immunology Group School of Medicine, Hospital Militar Central, Transversal 3ª # 49-00, Bogotá, 110231, Colombia.,Cellular and Molecular Immunology Group/InmuBo, Universidad El Bosque, Bogotá, Colombia
| | - Juliette De Avila
- Cellular and Molecular Immunology Group/InmuBo, Universidad El Bosque, Bogotá, Colombia
| | - Fabián Salas-Cuestas
- Rheumatology and Immunology Department / Clinical Immunology Group School of Medicine, Hospital Militar Central, Transversal 3ª # 49-00, Bogotá, 110231, Colombia.,Cellular and Molecular Immunology Group/InmuBo, Universidad El Bosque, Bogotá, Colombia
| | - Consuelo Romero-Sánchez
- Rheumatology and Immunology Department / Clinical Immunology Group School of Medicine, Hospital Militar Central, Transversal 3ª # 49-00, Bogotá, 110231, Colombia. .,Cellular and Molecular Immunology Group/InmuBo, Universidad El Bosque, Bogotá, Colombia.
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Barrea L, Muscogiuri G, Frias-Toral E, Laudisio D, Pugliese G, Castellucci B, Garcia-Velasquez E, Savastano S, Colao A. Nutrition and immune system: from the Mediterranean diet to dietary supplementary through the microbiota. Crit Rev Food Sci Nutr 2020; 61:3066-3090. [PMID: 32691606 DOI: 10.1080/10408398.2020.1792826] [Citation(s) in RCA: 76] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The interaction between nutrition and the immune system is very complex. In particular, at every stage of the immune response, specific micronutrients, including vitamins and minerals play a key role and often synergistic, and the deficiency of only one essential nutrient may impair immunity. An individual's overall nutrition status and pattern of dietary intake (comprised of nutrients and non-nutritive bioactive compounds and food) and any supplementation with nutraceuticals including vitamins and minerals, can influence positively or negatively the function of the immune system. This influence can occur at various levels from the innate immune system and adaptive immune system to the microbiome. Although there are conflicting evidence, the current results point out that dietary supplementation with some nutrients such as vitamin D and zinc may modulate immune function. An update on the complex relationship between nutrition, diet, and the immune system through gut microbiota is the aim of this current review. Indeed, we will provide the overview of the link among immune function, nutrition and gut microbiota, paying particular attention at the effect of the Mediterranean diet on the immune system, and finally we will speculate the possible role of the main one functional supplements on immune function.
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Affiliation(s)
- Luigi Barrea
- Dipartimento di Medicina Clinica e Chirurgia, Unit of Endocrinology, Federico II University Medical School of Naples, Naples, Italy.,Centro Italiano per la cura e il Benessere del paziente con Obesità (C.I.B.O), Department of Clinical Medicine and Surgery, Endocrinology Unit, University Medical School of Naples, Naples, Italy
| | - Giovanna Muscogiuri
- Dipartimento di Medicina Clinica e Chirurgia, Unit of Endocrinology, Federico II University Medical School of Naples, Naples, Italy.,Centro Italiano per la cura e il Benessere del paziente con Obesità (C.I.B.O), Department of Clinical Medicine and Surgery, Endocrinology Unit, University Medical School of Naples, Naples, Italy
| | | | - Daniela Laudisio
- Dipartimento di Medicina Clinica e Chirurgia, Unit of Endocrinology, Federico II University Medical School of Naples, Naples, Italy.,Centro Italiano per la cura e il Benessere del paziente con Obesità (C.I.B.O), Department of Clinical Medicine and Surgery, Endocrinology Unit, University Medical School of Naples, Naples, Italy
| | - Gabriella Pugliese
- Dipartimento di Medicina Clinica e Chirurgia, Unit of Endocrinology, Federico II University Medical School of Naples, Naples, Italy.,Centro Italiano per la cura e il Benessere del paziente con Obesità (C.I.B.O), Department of Clinical Medicine and Surgery, Endocrinology Unit, University Medical School of Naples, Naples, Italy
| | - Bianca Castellucci
- Dipartimento di Medicina Clinica e Chirurgia, Unit of Endocrinology, Federico II University Medical School of Naples, Naples, Italy.,Centro Italiano per la cura e il Benessere del paziente con Obesità (C.I.B.O), Department of Clinical Medicine and Surgery, Endocrinology Unit, University Medical School of Naples, Naples, Italy
| | | | - Silvia Savastano
- Dipartimento di Medicina Clinica e Chirurgia, Unit of Endocrinology, Federico II University Medical School of Naples, Naples, Italy.,Centro Italiano per la cura e il Benessere del paziente con Obesità (C.I.B.O), Department of Clinical Medicine and Surgery, Endocrinology Unit, University Medical School of Naples, Naples, Italy
| | - Annamaria Colao
- Dipartimento di Medicina Clinica e Chirurgia, Unit of Endocrinology, Federico II University Medical School of Naples, Naples, Italy.,Centro Italiano per la cura e il Benessere del paziente con Obesità (C.I.B.O), Department of Clinical Medicine and Surgery, Endocrinology Unit, University Medical School of Naples, Naples, Italy.,Cattedra Unesco "Educazione alla salute e allo sviluppo sostenibile," University Federico II, Naples, Italy
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45
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Villot C, Chen Y, Pedgerachny K, Chaucheyras-Durand F, Chevaux E, Skidmore A, Guan LL, Steele MA. Early supplementation of Saccharomyces cerevisiae boulardii CNCM I-1079 in newborn dairy calves increases IgA production in the intestine at 1 week of age. J Dairy Sci 2020; 103:8615-8628. [PMID: 32684462 DOI: 10.3168/jds.2020-18274] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Accepted: 04/22/2020] [Indexed: 01/22/2023]
Abstract
The early development of immunity and microbiota in the gut of newborn calves can have life-long consequences. Gut microbiota and the intestinal barrier interplay after birth, establishing a homeostatic state whereby mucosal cells cohabit with microorganisms to develop a healthy gut. We hypothesized that postnatal codevelopment of gut immunity and microbiota could be influenced by early-life supplementation with live yeast. Starting from birth, calves either received a daily supplementation of Saccharomyces cerevisiae boulardii CNCM I-1079 (SCB, 10 × 109 cfu/d, n = 10) in the morning meal for 7 d or no supplementation (n = 10). Each animal received 2 adequate colostrum replacer meals at 2 and 12 h of life (expected total IgG fed = 300 g) before being fed milk replacer twice a day. Passive transfer of immunity (total protein, IgG, and IgA) through colostrum was evaluated and endogenous production of IgA was investigated by measuring IgA-producing plasma cells, IgA relative gene expression (PIGR and CD79A), and secretory IgA concentration in the gut. The concentration of targeted microbial groups was evaluated with quantitative PCR in the gut digesta collected at d 7 of life. Early SCB supplementation did not impair immunoglobulin absorption and all calves had successful passive transfer of immunity (serum IgG concentration >15 mg/mL at d 1 and d 7 of age). Although the expression of IgA relative gene expression (PIGR and CD79A) was not different, SCB calves had higher secretory IgA concentrations in the ileum (1.98 ± 0.12 mg/g of dry matter; DM) and colon (1.45 ± 0.12 mg/g of DM) digesta compared with control animals (1.18 and 0.59 ± 0.12 mg/g of DM, respectively). In addition, the number of IgA-producing plasma cells were greater in both ileum (2.55 ± 0.40 cells/mm2) and colon (3.03 ± 0.40 cells/mm2) tissues for SCB calves compared with control (respectively 1.00 ± 0.40 and 0.60 ± 0.42 cells/mm2). Endogenous IgA production in the gut of SCB calves was enhanced, which could make them less prone to pathogen intrusion. In addition, SCB calves had higher Lactobacillus and tended to have higher Faecalibacterium prausnitzii in the jejunum compared with control calves, which suggests that SCB supplementation during early-life gut colonization may have a positive effect in newborn calves. Direct SCB supplementation or the cross-talk between SCB and bacteria may be responsible for stimulating IgA production and may play a key role in shaping early colonization in the gut of newborn calves.
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Affiliation(s)
- C Villot
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton T6G 2P5, Canada; Lallemand SAS, F-31702 Blagnac, France
| | - Y Chen
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton T6G 2P5, Canada; Lethbridge Research Center, Agriculture and Agri-Food Canada, Lethbridge, AB T1J 4B1, Canada
| | - K Pedgerachny
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton T6G 2P5, Canada
| | | | - E Chevaux
- Lallemand SAS, F-31702 Blagnac, France
| | - A Skidmore
- Lallemand Specialties Inc, Milwaukee, WI 53218
| | - L L Guan
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton T6G 2P5, Canada
| | - M A Steele
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton T6G 2P5, Canada; Department of Animal Biosciences, University of Guelph, Guelph, ON N1G 2W1, Canada.
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Heterologous expression of Intimin and IpaB fusion protein in Lactococcus lactis and its mucosal delivery elicit protection against pathogenicity of Escherichia coli O157 and Shigella flexneri in a murine model. Int Immunopharmacol 2020; 85:106617. [PMID: 32464569 DOI: 10.1016/j.intimp.2020.106617] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 05/16/2020] [Accepted: 05/17/2020] [Indexed: 12/12/2022]
Abstract
Escherichia coli O157:H7 and Shigella flexneri are the predominant diarrhoeal pathogens and those strains producing Shiga toxins cause life-threatening sequelae including hemolytic uremic syndrome (HUS) upon their entry into the host. Intimate adherence of E. coli O157 and invasion of S. flexneri in the host intestinal epithelial cells is mainly mediated by Intimin and IpaB proteins, respectively. In this study, we have synthesized chimera of immunodominant regions of Intimin (eae) and IpaB (ipaB) designated as EI and expressed it in Lactococcus lactis (LL-EI) to develop a combinatorial oral vaccine candidate. Immune parameters and protective efficacy of orally administered LL-EI were assessed in the murine model. Significant EI-specific serum IgG, IgA, and fecal IgA antibody titer were observed in the LL-EI group. Considerable increase in EI-specific splenocyte proliferation and a concurrent upregulation of both Th1 and Th2 cytokines was observed in LL-EI immunized mice. Flow cytometry analysis also revealed a significant increase in CD4 and CD8 cell counts in LL-EI immunized group compared to PBS, LL control group.In vitro studies using LL-EI immunized mice sera showed substantial protection against bacterial adhesion and invasion caused by E. coli O157 and Shigella flexneri¸ respectively. LL-EI immunized group challenged with E. coli O157 ceased fecal shedding within 6 days, and mice challenged with S. flexneri showed 93% survival with minimal bacterial load in the lungs. Our results indicate that LL-EI immunization elicits systemic, mucosal and cell-mediated immune responses, and can be a promising candidate for oral vaccine development against these pathogens.
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TSURUTA T, KATSUMATA E, MIZOTE A, JIAN HJ, MUHOMAH TA, NISHINO N. Cyclic nigerosylnigerose ameliorates DSS-induced colitis with restoration of goblet cell number and increase in IgA reactivity against gut microbiota in mice. BIOSCIENCE OF MICROBIOTA, FOOD AND HEALTH 2020; 39:188-196. [PMID: 32775139 PMCID: PMC7392908 DOI: 10.12938/bmfh.2020-012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Accepted: 04/11/2020] [Indexed: 01/04/2023]
Abstract
Cyclic nigerosylnigerose (CNN) is a cyclic oligosaccharide. Oral administration of CNN promotes immunoglobulin A (IgA) secretion in the gut. IgA is a major antibody secreted into the gut and plays a crucial role in suppressing gut inflammation due to commensal gut microbiota. To investigate the effect of administration of CNN to promote IgA secretion on gut inflammation, experimental colitis was induced with dextran sulfate sodium (DSS) in Balb/c mice after 6 weeks of CNN pre-feeding. The severity of colitis was evaluated based on a disease activity index (DAI), the gene expression of inflammatory cytokines, and a histological examination. The CNN-treated mice with DSS-induced colitis (CNN-DSS group) showed significantly lower DAI scores and mRNA levels of interleukin-1 compared with the CNN-untreated mice with DSS-induced colitis (DSS group). Histological examination of the colon revealed that the pathological score was significantly lower in the CNN-DSS group compared with the DSS group due to the reduced infiltration of immune cells. The number of goblet cells was significantly higher in the CNN-DSS group compared with the DSS group. The IgA concentration and the ratio of microbiota coated with IgA were evaluated in the cecal content. Although there was no difference in the IgA concentration among groups, a higher proportion of cecal microbiota were coated with IgA in the CNN-DSS group compared with that in the DSS group. These results suggest that CNN might preserve goblet cells in the colon and promote IgA coating of gut microbiota, which synergistically ameliorate gut inflammation in mice with DSS-induced colitis.
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Affiliation(s)
- Takeshi TSURUTA
- Laboratory of Animal Nutrition, Graduate School of Environmental and Life Science, Okayama University, 1-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530,
Japan
| | - Emiko KATSUMATA
- Laboratory of Animal Nutrition, Graduate School of Environmental and Life Science, Okayama University, 1-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530,
Japan
| | | | - Hou Jian JIAN
- Laboratory of Animal Nutrition, Graduate School of Environmental and Life Science, Okayama University, 1-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530,
Japan
| | - Teresia Aluoch MUHOMAH
- Laboratory of Animal Nutrition, Graduate School of Environmental and Life Science, Okayama University, 1-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530,
Japan
| | - Naoki NISHINO
- Laboratory of Animal Nutrition, Graduate School of Environmental and Life Science, Okayama University, 1-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530,
Japan
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Sterlin D, Fadlallah J, Slack E, Gorochov G. The antibody/microbiota interface in health and disease. Mucosal Immunol 2020; 13:3-11. [PMID: 31413347 DOI: 10.1038/s41385-019-0192-y] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 07/25/2019] [Accepted: 07/27/2019] [Indexed: 02/07/2023]
Abstract
The human intestine is densely colonized with commensal microbes that stimulate the immune system. While secretory Immunoglobulin (Ig) A is known to play a crucial role in gut microbiota compartmentalization, secretory IgM, and systemic IgG have recently been highlighted in host-microbiota interactions as well. In this review, we discuss important aspects of secretory IgA biology, but rather than focusing on mechanistic aspects of IgA impact on microbiota, we stress the current knowledge of systemic antibody responses to whole gut microbiota, in particular their generation, specificities, and function. We also provide a comprehensive picture of secretory IgM biology. Finally, therapeutic and diagnostic implications of these novel findings for the treatment of various diseases are outlined.
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Affiliation(s)
- Delphine Sterlin
- Sorbonne Université, Inserm, Centre d'Immunologie et des Maladies Infectieuses (CIMI-Paris), AP-HP Hôpital Pitié-Salpêtrière, 75013, Paris, France.,Unit of Antibodies in Therapy and Pathology, Institut Pasteur, UMR1222 Inserm, F-75015, Paris, France
| | - Jehane Fadlallah
- Université Paris Diderot Paris 7, Department of Clinical Immunology, Hôpital Saint-Louis, Assistance Publique Hôpitaux de Paris (APHP), EA3518, 75010, Paris, France
| | - Emma Slack
- Institute of Food Sciences, Nutrition and Health, ETH Zurich, 8093, Zürich, Switzerland.
| | - Guy Gorochov
- Sorbonne Université, Inserm, Centre d'Immunologie et des Maladies Infectieuses (CIMI-Paris), AP-HP Hôpital Pitié-Salpêtrière, 75013, Paris, France.
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Rhubarb-Evoke Mucus Secretion through Aggregation and Degranulation of Mast Cell in the Colon of Rat: In vivo and ex vivo studies. Sci Rep 2019; 9:19375. [PMID: 31852975 PMCID: PMC6920142 DOI: 10.1038/s41598-019-55937-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Accepted: 12/04/2019] [Indexed: 01/05/2023] Open
Abstract
Rhubarb is commonly used to treat constipation in China for its function of promoting intestinal movement and optimum water content in feces. However, its mechanism of mucus secretion is vague. The aim of the study is to investigate the role of mast cells and enteric neurons in rhubarb extract (RE)-induced mucus secretion in the rat colon. Immunofluorescence was used to detect histamine receptors. Western blotting and 3,3′-diaminobenzidine (DAB) were applied to explore the content changes of mast cells activation. The changes in colonic goblet cells (GCs) were determined by means of PAS/AB staining. An intestinal perfusion system with a Bradford protein assay kit was directly to estimate in vitro secretion. And the cytokines were investigated with ELISA. The longitudinal aspect of this study indicate that the number and water content of faecal pellets were enhanced after the administration of different doses of RE accompanied by mast cells accumulated and increased the content of interferon (IFN) -γ or decreased the levels of interleukin (IL) −10 at doses of 3 and 6 g/kg. Pretreatment with ketotifen, mast cell stabilizer, had partially inhibited on RE-induced mucus secretion. Furthermore, RE induced the release of acetylcholine and mucin-2 in the colonic tissue and the histamine levels from the faeces. The results suggest that RE induced colonic mucus secretion involves mast cell activation and some cytokine.
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Koenen MH, van Montfrans JM, Sanders EAM, Bogaert D, Verhagen LM. Immunoglobulin A deficiency in children, an undervalued clinical issue. Clin Immunol 2019; 209:108293. [PMID: 31678364 DOI: 10.1016/j.clim.2019.108293] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 10/23/2019] [Accepted: 10/23/2019] [Indexed: 12/24/2022]
Abstract
Immunoglobulin A (IgA) is the principal antibody in secretions that bathe the gastrointestinal and respiratory mucosal surfaces and acts as an important first line of defense against invasion of pathogenic micro-organisms. The reported prevalence rate of complete IgA deficiency in healthy children ranges from 1:170 to 1:400, and as a solitary condition, it is often considered of limited clinical importance. However, patients with IgA deficiency can develop recurrent respiratory and gastrointestinal infections, as well as allergic and autoimmune diseases. In children referred for recurrent respiratory tract infections, the observed prevalence rate increases more than tenfold. This review discusses several aspects of IgA deficiency in children, including immunologic and microbiome changes in early childhood and the potential consequences of this condition in later life. It illustrates the importance of early identification of children with impaired IgA production who deserve appropriate clinical care and follow-up.
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Affiliation(s)
- M H Koenen
- Department of Pediatric Immunology and Infectious Diseases, Wilhelmina Children's Hospital, Lundlaan 6, 3508 AB Utrecht, the Netherlands.
| | - J M van Montfrans
- Department of Pediatric Immunology and Infectious Diseases, Wilhelmina Children's Hospital, Lundlaan 6, 3508 AB Utrecht, the Netherlands.
| | - E A M Sanders
- Department of Pediatric Immunology and Infectious Diseases, Wilhelmina Children's Hospital, Lundlaan 6, 3508 AB Utrecht, the Netherlands; Centre for Infectious Disease Control (Cib), National Institute of Public Health and the Environment (RIVM), Antonie van Leeuwenhoeklaan 9, 3720 BA Bilthoven, the Netherlands.
| | - D Bogaert
- Department of Pediatric Immunology and Infectious Diseases, Wilhelmina Children's Hospital, Lundlaan 6, 3508 AB Utrecht, the Netherlands; Center for Inflammation Research, Queen's Medical Research Institute, University of Edinburgh, Little France Crescent 47, EH16 4TJ Edinburgh, United Kingdom.
| | - L M Verhagen
- Department of Pediatric Immunology and Infectious Diseases, Wilhelmina Children's Hospital, Lundlaan 6, 3508 AB Utrecht, the Netherlands.
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