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Lemke S, de Andrade DF, de Fragas Hinnig P, da Silva SA, Vincenzi SL, Roberto DMT, Lobo AS, Vieira FGK, Di Pietro PF, de Assis MAA. Development and application of the Meal and Snack Assessment (MESA) quality scale for children and adolescents using item response theory. Nutr J 2024; 23:50. [PMID: 38745270 PMCID: PMC11092231 DOI: 10.1186/s12937-024-00948-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: 02/21/2024] [Accepted: 04/10/2024] [Indexed: 05/16/2024] Open
Abstract
BACKGROUND Meals differ in terms of food items and nutritional quality. The aim of the present study was to propose a scale to measure the meals quality of schoolchildren according to food processing degree, perform a preliminary evaluation of the scale's validity and reliability and apply the scale to a representative sample of schoolchildren in a city in southern Brazil. METHODS A methodological study based on the generalized graded unfolding model (GGUM) of item response theory (IRT) with analysis of secondary data was carried out in 6,399 schoolchildren of 6-15y-old attending 2nd to 5th grades of public elementary schools in Florianópolis, Brazil, in 2013-2015 who answered the validated Food Intake and Physical Activities of Schoolchildren (WebCAAFE) questionnaire. Meal quality was the latent trait. The steps for the development of the scale included: latent trait definition; item generation; dimensionality analysis; estimation of item parameters; scale levels definition; assessment of validity and reliability; and assessment of the meal quality of a subsample of schoolchildren aged 7 to 12 years (n = 6,372). RESULTS Eleven out of eighteen items had adequate parameters, without differential item functioning for sex or age. Meal quality was categorized into three levels: healthy, mixed, and unhealthy. Higher scores indicate a greater prevalence of ultra-processed foods in daily meals. Most schoolchildren had mixed (40.6%) and unhealthy (41%) meal patterns. CONCLUSIONS IRT analysis allowed the development of the scale, which measures the quality of meals and snacks based on the degree of food processing. At all snack times, there was a higher frequency of ultra-processed foods consumption, therefore foods consumed as snacks are a potential focus for nutritional interventions.
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Affiliation(s)
- Stella Lemke
- Nutrition Postgraduate Program, Department of Nutrition, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Dalton Francisco de Andrade
- Informatics and Statistics Department, Technological Center, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Patrícia de Fragas Hinnig
- Nutrition Postgraduate Program, Department of Nutrition, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Silvio Aparecido da Silva
- Knowledge Management Department, Federal Institute of Education, Science and Technology of Santa Catarina, Florianópolis, Brazil
| | - Silvana Ligia Vincenzi
- Informatics and Statistics Department, Technological Center, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Denise Miguel Teixeira Roberto
- Nutrition Postgraduate Program, Department of Nutrition, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Adriana Soares Lobo
- Nutrition Postgraduate Program, Department of Nutrition, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Francilene Gracieli Kunradi Vieira
- Nutrition Postgraduate Program, Department of Nutrition, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Patricia Faria Di Pietro
- Nutrition Postgraduate Program, Department of Nutrition, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, Brazil.
- Federal University of Santa Catarina, Campus Trindade, Florianópolis, Santa Catarina, 88040-370, Brazil.
| | - Maria Alice Altenburg de Assis
- Nutrition Postgraduate Program, Department of Nutrition, Health Sciences Center, Federal University of Santa Catarina, Florianópolis, Brazil
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2
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Phelps A, Pazos-Castro D, Urselli F, Grydziuszko E, Mann-Delany O, Fang A, Walker TD, Guruge RT, Tome-Amat J, Diaz-Perales A, Waserman S, Boonyaratanakornkit J, Jordana M, Taylor JJ, Koenig JFE. Production and use of antigen tetramers to study antigen-specific B cells. Nat Protoc 2024; 19:727-751. [PMID: 38243093 DOI: 10.1038/s41596-023-00930-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Accepted: 10/20/2023] [Indexed: 01/21/2024]
Abstract
B cells generate antibodies that provide protection from infection, but also cause pathology in autoimmune and allergic conditions. Antigen-specific B cells can be detected by binding their surface antibody receptors with native antigens conjugated to fluorescent probes, a technique that has revealed substantial insight into B cell activation and function. This protocol describes the process of generating fluorescent antigen tetramer probes and delineates a process of enriching large samples based on antigen-specificity for high-resolution analyses of the antigen-specific B cell repertoire. Enrichment of tetramer-binding cells allows for detection of antigen-specific B cells as rare as 1 in 100 million cells, providing sufficient resolution to study naive B cells and IgE-expressing cells by flow cytometry. The generation of antigen tetramers involves antigen biotinylation, assessment of biotin:antigen ratio for optimal tetramer loading and polymerization around a streptavidin-fluorophore backbone. We also describe the construction of a control tetramer to exclude B cells binding to the tetramer backbone. We provide a framework to validate whether tetramer probes are detecting true antigen-specific B cells and discuss considerations for experimental design. This protocol can be performed by researchers trained in basic biomedical/immunological research techniques, using instrumentation commonly found in most laboratories. Constructing the antigen and control tetramers takes 9 h, though their specificity should be assessed before experimentation and may take weeks to months depending on the method of validation. Sample enrichment requires ~2 h but is generally time and cost neutral as fewer cells are run through the flow cytometer.
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Affiliation(s)
- Allyssa Phelps
- Department of Medicine, Schroeder Allergy and Immunology Research Institute, McMaster Immunology Research Centre, McMaster University, Hamilton, Ontario, Canada
| | - Diego Pazos-Castro
- Department of Medicine, Schroeder Allergy and Immunology Research Institute, McMaster Immunology Research Centre, McMaster University, Hamilton, Ontario, Canada
- Centre for Plant Biotechnology and Genomics, Universidad Politécnica de Madrid - Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria/Consejo Superior de Investigaciones Científicas (UPM-INIA/CSIC), Universidad Politécnica de Madrid, Madrid, Spain
- Department of Biotechnology-Plant Biology, Escuela Técnica Superior de Ingeniería Agronómica, Alimentaria y de Biosistemas (ETSIAAB), Universidad Politécnica de Madrid, Madrid, Spain
| | - Francesca Urselli
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, WA, USA
| | - Emily Grydziuszko
- Department of Medicine, Schroeder Allergy and Immunology Research Institute, McMaster Immunology Research Centre, McMaster University, Hamilton, Ontario, Canada
| | - Olivia Mann-Delany
- Department of Medicine, Schroeder Allergy and Immunology Research Institute, McMaster Immunology Research Centre, McMaster University, Hamilton, Ontario, Canada
| | - Allison Fang
- Department of Medicine, Schroeder Allergy and Immunology Research Institute, McMaster Immunology Research Centre, McMaster University, Hamilton, Ontario, Canada
| | - Tina D Walker
- Department of Medicine, Schroeder Allergy and Immunology Research Institute, McMaster Immunology Research Centre, McMaster University, Hamilton, Ontario, Canada
| | - Rangana Talpe Guruge
- Department of Medicine, Schroeder Allergy and Immunology Research Institute, McMaster Immunology Research Centre, McMaster University, Hamilton, Ontario, Canada
| | - Jaime Tome-Amat
- Centre for Plant Biotechnology and Genomics, Universidad Politécnica de Madrid - Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria/Consejo Superior de Investigaciones Científicas (UPM-INIA/CSIC), Universidad Politécnica de Madrid, Madrid, Spain
| | - Araceli Diaz-Perales
- Centre for Plant Biotechnology and Genomics, Universidad Politécnica de Madrid - Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria/Consejo Superior de Investigaciones Científicas (UPM-INIA/CSIC), Universidad Politécnica de Madrid, Madrid, Spain
- Department of Biotechnology-Plant Biology, Escuela Técnica Superior de Ingeniería Agronómica, Alimentaria y de Biosistemas (ETSIAAB), Universidad Politécnica de Madrid, Madrid, Spain
| | - Susan Waserman
- Department of Medicine, Schroeder Allergy and Immunology Research Institute, McMaster Immunology Research Centre, McMaster University, Hamilton, Ontario, Canada
| | - Jim Boonyaratanakornkit
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, WA, USA
- Department of Medicine, University of Washington, Seattle, WA, USA
| | - Manel Jordana
- Department of Medicine, Schroeder Allergy and Immunology Research Institute, McMaster Immunology Research Centre, McMaster University, Hamilton, Ontario, Canada
| | - Justin J Taylor
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, WA, USA.
- Department of Immunology, University of Washington, Seattle, WA, USA.
- Department of Global Health, University of Washington, Seattle, WA, USA.
- Beirne B. Carter Center for Immunology Research, University of Virginia, Charlottesville, VA, USA.
- Division of Infectious Diseases and International Health, Department of Medicine, University of Virginia, Charlottesville, VA, USA.
| | - Joshua F E Koenig
- Department of Medicine, Schroeder Allergy and Immunology Research Institute, McMaster Immunology Research Centre, McMaster University, Hamilton, Ontario, Canada.
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3
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Durgam SS, Khiew SH, Sayin I, Jain D, Yin D, Cavazzoni CB, Sage PT, King RG, Chong AS. MHC Tetramers Specifically Identify High- and Low-avidity Donor-specific B Cells in Transplantation Tolerance and Rejection. Transplantation 2023; 107:2526-2532. [PMID: 37493609 PMCID: PMC10811295 DOI: 10.1097/tp.0000000000004702] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/27/2023]
Abstract
BACKGROUND Although donor-specific antibody pre- and posttransplantation is routinely assessed, accurate quantification of memory alloreactive B cells that mediate recall antibody response remains challenging. Major histocompatibility complex (MHC) tetramers have been used to identify alloreactive B cells in mice and humans, but the specificity of this approach has not been rigorously assessed. METHODS B-cell receptors from MHC tetramer-binding single B cells were expressed as mouse recombinant immunoglobulin G1 (rIgG1) monoclonal antibodies, and the specificity was assessed with a multiplex bead assay. Relative binding avidity of rIgG1 was measured by modified dilution series technique and surface plasmon resonance. Additionally, immunoglobulin heavy chain variable regions of 50 individual B-cell receptors were sequenced to analyze the rate of somatic hypermutation. RESULTS The multiplex bead assay confirmed that expressed rIgG1 monoclonal antibodies were preferentially bound to bait MHC class II I-E d over control I-A d and I-A b tetramers. Furthermore, the dissociation constant 50 binding avidities of the rIgG1 ranged from 10 mM to 7 nM. The majority of tetramer-binding B cells were low avidity, and ~12.8% to 15.2% from naive and tolerant mice and 30.9% from acute rejecting mice were higher avidity (dissociation constant 50 <1 mM). CONCLUSIONS Collectively, these studies demonstrate that donor MHC tetramers, under stringent binding conditions with decoy self-MHC tetramers, can specifically identify a broad repertoire of donor-specific B cells under conditions of rejection and tolerance.
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Affiliation(s)
| | | | - Ismail Sayin
- Department of Surgery, The University of Chicago, Chicago,
IL, USA
| | - Dharmendra Jain
- Department of Surgery, The University of Chicago, Chicago,
IL, USA
| | - Dengping Yin
- Department of Surgery, The University of Chicago, Chicago,
IL, USA
| | - Cecilia B. Cavazzoni
- Transplantation Research Center, Renal Division, Brigham
and Women’s Hospital, Harvard Medical School, Boston, MA, USA
| | - Peter T. Sage
- Transplantation Research Center, Renal Division, Brigham
and Women’s Hospital, Harvard Medical School, Boston, MA, USA
| | - R. Glenn King
- Department of Microbiology, University of Alabama at
Birmingham, Birmingham, AL, 35294, USA
| | - Anita S Chong
- Department of Surgery, The University of Chicago, Chicago,
IL, USA
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4
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Tzovara I, Papadatou I, Tzanoudaki M, Spoulou V. Development of a novel flow cytometry method for detecting pneumococcal‐specific B cells
1. Cytometry A 2022; 101:588-596. [DOI: 10.1002/cyto.a.24654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 04/16/2022] [Accepted: 05/05/2022] [Indexed: 11/09/2022]
Affiliation(s)
- Irene Tzovara
- Department of Infectious Diseases ‐ Immunobiology and Vaccinology Research Lab “Aghia Sophia” Children's Hospital, 1st Department of Pediatrics ‐ National and Kapodistrian University of Athens Athens Greece
| | - Ioanna Papadatou
- Department of Infectious Diseases ‐ Immunobiology and Vaccinology Research Lab “Aghia Sophia” Children's Hospital, 1st Department of Pediatrics ‐ National and Kapodistrian University of Athens Athens Greece
| | - Marianna Tzanoudaki
- Department of Immunology & Histocompatibility, Specific Reference Centre for Primary Immunodeficiencies‐Paediatric Immunology “Aghia Sophia” Children's Hospital Athens Greece
| | - Vasiliki Spoulou
- Department of Infectious Diseases ‐ Immunobiology and Vaccinology Research Lab “Aghia Sophia” Children's Hospital, 1st Department of Pediatrics ‐ National and Kapodistrian University of Athens Athens Greece
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5
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Abstract
Over the years, various techniques have been utilized to study the function and phenotype of antigen-binding B cells in the primary repertoire following immunization, infection, and development of autoimmunity. Due to the low frequency of antigen-reactive B cells (<0.05% of lymphocytes) in the periphery, preliminary enrichment of cells is necessary to achieve sufficient numbers for statistically sound characterization, especially when downstream analytic platform use, e.g., CyTOF, is low throughput. We previously described a method to detect and enrich antigen-reactive B cells from peripheral blood and tissues using biotinylated antigens in conjunction with magnetic nanoparticles, preparative to a downstream analysis by ELISPOT and flow cytometry. While mass cytometry (CyTOF) enables high dimensional immunophenotyping of over 40 unique parameters on a single-cell level, its low throughput compared to flow cytometry and requirement for removal of metal contaminants, such as nanoparticles, made it particularly unsuitable for studies of rare cells in a mixed population. Here we describe a novel CyTOF-compatible approach for multiplexed enrichment of antigen-reactive B cells, e.g., insulin and tetanus toxoid, using cleavable magnetic nanoparticles. This method allows improved monitoring of the phenotype and function of antigen-reactive B cells during the development of disease or after immunization while minimizing the amount of sample and run times needed.
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6
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Boonyaratanakornkit J, Taylor JJ. Techniques to Study Antigen-Specific B Cell Responses. Front Immunol 2019; 10:1694. [PMID: 31396218 PMCID: PMC6667631 DOI: 10.3389/fimmu.2019.01694] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Accepted: 07/08/2019] [Indexed: 12/13/2022] Open
Abstract
Antibodies against foreign antigens are a critical component of the overall immune response and can facilitate pathogen clearance during a primary infection and also protect against subsequent infections. Dysregulation of the antibody response can lead to an autoimmune disease, malignancy, or enhanced infection. Since the experimental delineation of a distinct B cell lineage in 1965, various methods have been developed to understand antigen-specific B cell responses in the context of autoimmune diseases, primary immunodeficiencies, infection, and vaccination. In this review, we summarize the established techniques and discuss new and emerging technologies for probing the B cell response in vitro and in vivo by taking advantage of the specificity of B cell receptor (BCR)-associated and secreted antibodies. These include ELISPOT, flow cytometry, mass cytometry, and fluorescence microscopy to identify and/or isolate primary antigen-specific B cells. We also present our approach to identify rare antigen-specific B cells using magnetic enrichment followed by flow cytometry. Once these cells are isolated, in vitro proliferation assays and adoptive transfer experiments in mice can be used to further characterize antigen-specific B cell activation, function, and fate. Transgenic mouse models of B cells targeting model antigens and of B cell signaling have also significantly advanced our understanding of antigen-specific B cell responses in vivo.
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Affiliation(s)
- Jim Boonyaratanakornkit
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA, United States
| | - Justin J Taylor
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA, United States
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7
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Detecting the humoral alloimmune response: we need more than serum antibody screening. Transplantation 2015; 99:908-15. [PMID: 25839708 DOI: 10.1097/tp.0000000000000724] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Whereas many techniques exist to detect HLA antibodies in the sera of immunized individuals, assays to detect and quantify HLA-specific B cells are only just emerging. The need for such assays is becoming clear, as in some patients, HLA-specific memory B cells have been shown to be present in the absence of the accompanying serum HLA antibodies. Because HLA-specific B cells in the peripheral blood of immunized individuals are present at only a very low frequency, assays with high sensitivity are required. In this review, we discuss the currently available methods to detect and/or quantify HLA-specific B cells, as well as their promises and limitations. We also discuss scenarios in which quantification of HLA-specific B cells may be of additional value, besides classical serum HLA antibody detection.
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8
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Azcárate IG, Marín-García P, Pérez-Benavente S, Diez A, Puyet A, Bautista JM. Early and late B cell immune responses in lethal and self-cured rodent malaria. Immunobiology 2014; 220:684-91. [PMID: 25466589 DOI: 10.1016/j.imbio.2014.11.010] [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: 07/08/2014] [Accepted: 11/11/2014] [Indexed: 11/25/2022]
Abstract
ICR mice have heterogeneous susceptibility to lethal Plasmodium yoelii yoelii 17XL from the first days of experimental infection as evidenced by the different parasitemia levels and clinical outcomes. This mouse model has revealed specific immune responses on peripheral blood correlating with the infection fate of the animals. To search for immune-markers linked to parasitemia we examined B lymphocytes in organs of the immune system as key effectors of rodent immunity against malaria. To determine changes in immune cellularity fostered by the different prognostic parasitemia we examined B cell subsets in low (<15%) and high (>50%) parasitized mice during the first days of the infection. In the case of surviving mice, we studied the preservation of memory immune response 500 days after the primary P. yoelii challenge. Correlating with the parasitemia level, it was observed an increase in total cellularity of spleen during the first week of infection which remained after 16 months of the infection in surviving animals. B cell subsets were also modified across the different infection fates. Subpopulation as follicular B cells and B-1 cells proportions behaved differently depending on the parasitemia kinetics. In addition, peritoneal cavity cells proliferated in response to high parasitemia. More significantly, P. yoelii -specific memory B cells remained in the spleen 500 days after the primo-infection. This study demonstrates that B cell kinetics is influenced by the different parasitemia courses which are naturally developed within a same strain of untreated mice. We show that high levels of parasitemia at the beginning of infection promote an extremely fast and exacerbate response of several cell populations in spleen and peritoneal cavity that, in addition, do not follow the kinetics observed in peripheral blood. Furthermore, our results describe the longest persistence of memory B cells long time upon a single malaria infection in mice.
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Affiliation(s)
- Isabel G Azcárate
- Department of Biochemistry and Molecular Biology IV and Research Institute Hospital 12 de Octubre, Universidad Complutense de Madrid, Facultad de Veterinaria, Ciudad Universitaria, 28040 Madrid, Spain
| | - Patricia Marín-García
- Department of Biochemistry and Molecular Biology IV and Research Institute Hospital 12 de Octubre, Universidad Complutense de Madrid, Facultad de Veterinaria, Ciudad Universitaria, 28040 Madrid, Spain; Department of Medicine and Surgery, Psychology, Preventive Medicine and Public Health and Medical Immunology and Microbiology, Faculty of Health Sciences, Rey Juan Carlos University, Alcorcón, Madrid, Spain
| | - Susana Pérez-Benavente
- Department of Biochemistry and Molecular Biology IV and Research Institute Hospital 12 de Octubre, Universidad Complutense de Madrid, Facultad de Veterinaria, Ciudad Universitaria, 28040 Madrid, Spain
| | - Amalia Diez
- Department of Biochemistry and Molecular Biology IV and Research Institute Hospital 12 de Octubre, Universidad Complutense de Madrid, Facultad de Veterinaria, Ciudad Universitaria, 28040 Madrid, Spain
| | - Antonio Puyet
- Department of Biochemistry and Molecular Biology IV and Research Institute Hospital 12 de Octubre, Universidad Complutense de Madrid, Facultad de Veterinaria, Ciudad Universitaria, 28040 Madrid, Spain
| | - José M Bautista
- Department of Biochemistry and Molecular Biology IV and Research Institute Hospital 12 de Octubre, Universidad Complutense de Madrid, Facultad de Veterinaria, Ciudad Universitaria, 28040 Madrid, Spain.
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9
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Misumi I, Whitmire JK. IFN-λ exerts opposing effects on T cell responses depending on the chronicity of the virus infection. THE JOURNAL OF IMMUNOLOGY 2014; 192:3596-606. [PMID: 24646741 DOI: 10.4049/jimmunol.1301705] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
IFN-λ induces an antiviral state in many cell types and may contribute to the overall inflammatory environment after infection. Either of these effects may influence adaptive immune responses, but the role of type 3 IFNs in the development of primary and memory T cell responses to infection has not been evaluated. In this study, we examined T cell responses to acute or persistent lymphocytic choriomeningitis virus infection in IFN-λR1-deficient mice. Following acute infection, we find that IFN-λR1-deficient mice produced normal levels of IFN, robust NK cell responses, but greater than normal CD4+ and CD8+ T cell responses compared with wild type BALB/c mice. There were more T cells that were IL-7R(hi) and, correspondingly, the IFN-λR-deficient mice showed a 2- to 3-fold increase in memory T cell number. The inhibitory effect of IFN-λR expression was independent of direct cytokine signaling into T cells. In contrast with acute infection, the IFN-λR-deficient mice generated markedly diminished T cell responses and had greater weight loss compared with wild type mice when confronted with a highly disseminating variant of lymphocytic choriomeningitis virus. These data indicate that IFN-λR limits T cell responses and memory after transient infection but augments T cell responses during persisting infection. Thus, the immune-regulatory functions for IFN-λR are complex and vary with the overall inflammatory environment.
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Affiliation(s)
- Ichiro Misumi
- Department of Genetics, University of North Carolina School of Medicine, Chapel Hill, NC 27599
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10
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Mitchell R, Kelly DF, Pollard AJ, Trück J. Polysaccharide-specific B cell responses to vaccination in humans. Hum Vaccin Immunother 2014; 10:1661-8. [PMID: 24632599 PMCID: PMC5396230 DOI: 10.4161/hv.28350] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2014] [Accepted: 02/25/2014] [Indexed: 12/25/2022] Open
Abstract
The introduction of vaccines containing the capsular polysaccharides of N. meningitidis, S. pneumonia, and H. influenzae type b has driven a significant reduction in cases of disease caused by these bacteria. The polysaccharide-specific antibody responses following vaccination are well characterized, however less is known about the B cells underlying this response. Here, we summarize the plasma cell (PC) and memory B cell (BMEM) responses following plain polysaccharide and protein-polysaccharide conjugate vaccination, drawing together studies covering a range of vaccines and age groups. These studies show that infant primary PC and BMEM responses to polysaccharide-conjugate vaccines are low in relation to older age groups but are significantly higher following booster doses. PC kinetics have generally been found to follow a similar pattern irrespective of vaccine type or age group, whereas divergent BMEM responses have been reported following plain polysaccharide and conjugate vaccination. A degree of correlation between early BMEM responses and maintenance of protective antibody levels has been identified in some studies, but the relationship between the 2 remains unclear. Identification of the B cell subsets involved and the mechanisms by which they are induced may provide a better understanding of the role of B cells in maintaining protective immunity through vaccination.
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Affiliation(s)
- Ruth Mitchell
- Oxford Vaccine Group; Department of Paediatrics; University of Oxford and the NIHR Oxford Biomedical Research Centre; Oxford, UK
| | - Dominic F Kelly
- Oxford Vaccine Group; Department of Paediatrics; University of Oxford and the NIHR Oxford Biomedical Research Centre; Oxford, UK
| | - Andrew J Pollard
- Oxford Vaccine Group; Department of Paediatrics; University of Oxford and the NIHR Oxford Biomedical Research Centre; Oxford, UK
| | - Johannes Trück
- Oxford Vaccine Group; Department of Paediatrics; University of Oxford and the NIHR Oxford Biomedical Research Centre; Oxford, UK
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11
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Huang KYA, Li CKF, Clutterbuck E, Chui C, Wilkinson T, Gilbert A, Oxford J, Lambkin-Williams R, Lin TY, McMichael AJ, Xu XN. Virus-specific antibody secreting cell, memory B-cell, and sero-antibody responses in the human influenza challenge model. J Infect Dis 2014; 209:1354-61. [PMID: 24415790 DOI: 10.1093/infdis/jit650] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
BACKGROUND Antibodies play a major role in the protection against influenza virus in human. However, the antibody level is usually short-lived and the cellular mechanisms underlying influenza virus-specific antibody response to acute infection remain unclear. METHODS We studied the kinetics and magnitude of influenza virus-specific B-cell and serum antibody responses in relation to virus replication during the course of influenza infection in healthy adult volunteers who were previously seronegative and experimentally infected with seasonal influenza H1N1 A/Brisbane/59/07 virus. RESULTS Our data demonstrated a robust expansion of the virus-specific antibody-secreting cells (ASCs) and memory B cells in the peripheral blood, which correlated with both the throat viral load and the duration of viral shedding. The ASC response was obviously detected on day 7 post-infection when the virus was completely cleared from nasal samples, and serum hemagglutination-inhibition antibodies were still undetectable. On day 28 postinfection, influenza virus-specific B cells were further identified from the circulating compartment of isotype-switched B cells. CONCLUSIONS Virus-specific ASCs could be the earliest marker of B-cell response to a new flu virus infection, such as H7N9 in humans.
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Affiliation(s)
- Kuan-Ying Arthur Huang
- Human Immunology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, United Kingdom
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12
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Ramirez K, Wahid R, Richardson C, Bargatze RF, El-Kamary SS, Sztein MB, Pasetti MF. Intranasal vaccination with an adjuvanted Norwalk virus-like particle vaccine elicits antigen-specific B memory responses in human adult volunteers. Clin Immunol 2012; 144:98-108. [PMID: 22710446 DOI: 10.1016/j.clim.2012.05.006] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2012] [Revised: 05/07/2012] [Accepted: 05/14/2012] [Indexed: 12/25/2022]
Abstract
Noroviruses are the most frequent cause of acute gastroenteritis in humans of all ages. No vaccines are currently available. An intranasally delivered Norwalk (NV) virus-like particle (VLP) vaccine was recently shown to be well tolerated, immunogenic and to protect against infection in Phase 1 studies. Here, we examined B memory (B(M)) responses in volunteers who received the highest dosage levels of the NV-VLP vaccine (50 μg and 100 μg). We measured the frequency of NV-specific IgG and IgA-secreting B(M) cells in peripheral blood and the level of antibodies produced by these cells in culture. All subjects immunized with 100 μg of the NV-VLP vaccine and 90% of those who received 50 μg had significant IgA or IgG B(M) responses. The B(M) cell frequencies correlated with serum antibody levels and mucosally-primed antibody-secreting cell responses. This is the first demonstration of dose-dependent, functional B(M) responses in humans immunized intranasally with a NV-VLP vaccine.
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Affiliation(s)
- Karina Ramirez
- Center for Vaccine Development, University of Maryland School of Medicine, 685 West Baltimore St., Baltimore, MD 21201, USA
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13
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Abstract
PURPOSE OF REVIEW The present review discusses recent advances, challenges and opportunities for the best use of conjugate vaccines now and in the future. RECENT FINDINGS Direct protection in young children may be short-lived and programme effectiveness may depend heavily on indirect protection (herd immunity). Pneumococcal carriage serotype replacement has been widely reported following vaccine implementation. Use of pneumococcal conjugate vaccines is being trialled in the elderly. Vaccination in west Africa against Neisseria meningitidis serogroup A (Men A), a new monovalent conjugate vaccine, was commenced in December 2010. New conjugate vaccines against, for example, Salmonella typhi and Streptococcus agalactiae, are being developed and tested in clinical trials. SUMMARY Conjugate vaccines have been extensively used to immunize children, resulting in significant decreases in childhood morbidity and mortality. Since their introduction, evidence has grown that protection against disease is due to both direct and indirect protection (herd immunity). The optimization of priming and booster dose regimens in existing paediatric vaccination programmes, aiming for maximal and sustained direct and indirect protection using as few doses per child as possible, may broaden conjugate vaccine impact and augment cost-effectiveness in the future. This may be particularly important in strategies for wider global use of conjugate vaccines in children, as well as use in adults and the elderly. Challenges such as pneumococcal serotype replacement make ongoing surveillance of carriage and invasive disease crucial and will have implications for conjugate reformulation and the development of alternative vaccines. New conjugate vaccines for other pathogens currently in clinical trials have the potential to reduce invasive bacterial disease further, particularly in resource-poor settings.
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