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Maimela PWM, Smith M, Nel AJM, Bernam SDP, Jonas EG, Blackburn JM. Humoral immunoprofiling identifies novel biomarkers and an immune suppressive autoantibody phenotype at the site of disease in pancreatic ductal adenocarcinoma. Front Oncol 2024; 14:1330419. [PMID: 38450186 PMCID: PMC10917065 DOI: 10.3389/fonc.2024.1330419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Accepted: 01/22/2024] [Indexed: 03/08/2024] Open
Abstract
Pancreatic ductal adenocarcinoma (PDAC) is a heterogeneous cancer, with minimal response to therapeutic intervention and with 85% of cases diagnosed at an advanced stage due to lack of early symptoms, highlighting the importance of understanding PDAC immunology in greater detail. Here, we applied an immunoproteomic approach to investigate autoantibody responses against cancer-testis and tumor-associated antigens in PDAC using a high-throughput multiplexed protein microarray platform, comparing humoral immune responses in serum and at the site of disease in order to shed new light on immune responses in the tumor microenvironment. We simultaneously quantified serum or tissue IgG and IgA antibody isotypes and subclasses in a cohort of PDAC, disease control and healthy patients, observing inter alia that subclass utilization in tumor tissue samples was predominantly immune suppressive IgG4 and inflammatory IgA2, contrasting with predominant IgG3 and IgA1 subclass utilization in matched sera and implying local autoantibody production at the site of disease in an immune-tolerant environment. By comparison, serum autoantibody subclass profiling for the disease controls identified IgG4, IgG1, and IgA1 as the abundant subclasses. Combinatorial analysis of serum autoantibody responses identified panels of candidate biomarkers. The top IgG panel included ACVR2B, GAGE1, LEMD1, MAGEB1 and PAGE1 (sensitivity, specificity and AUC values of 0.933, 0.767 and 0.906). Conversely, the top IgA panel included AURKA, GAGE1, MAGEA10, PLEKHA5 and XAGE3aV1 (sensitivity, specificity, and AUC values of 1.000, 0.800, and 0.954). Assessment of antigen-specific serum autoantibody glycoforms revealed abundant sialylation on IgA in PDAC, consistent with an immune suppressive IgA response to disease.
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Affiliation(s)
- Pamela Winnie M. Maimela
- Department of Integrative Biomedical Sciences, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
| | - Muneerah Smith
- Department of Integrative Biomedical Sciences, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
| | - Andrew J. M. Nel
- Department of Integrative Biomedical Sciences, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
| | | | - Eduard G. Jonas
- Department of Surgery, Gastroenterology Unit, Groote Schuur Hospital, University of Cape Town, Cape Town, South Africa
| | - Jonathan M. Blackburn
- Department of Integrative Biomedical Sciences, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
- Sengenics Corporation, Kuala Lumpur, Malaysia
- Institute of Infectious Disease and Molecular Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
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2
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Lu S, Chen K, Song K, Pilewski JM, Gunn BM, Poch KR, Rysavy NM, Vestal BE, Saavedra MT, Kolls JK. Systems serology in cystic fibrosis: Anti-Pseudomonas IgG1 responses and reduced lung function. Cell Rep Med 2023; 4:101210. [PMID: 37852181 PMCID: PMC10591031 DOI: 10.1016/j.xcrm.2023.101210] [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: 11/22/2022] [Revised: 05/04/2023] [Accepted: 09/06/2023] [Indexed: 10/20/2023]
Abstract
Nearly one-half of patients with cystic fibrosis (CF) carry the homozygous F508del mutation in the cystic fibrosis transmembrane conductance regulator (CFTR) gene but exhibit variable lung function phenotypes. How adaptive immunity influences their lung function remains unclear, particularly the serological antibody responses to antigens from mucoid Pseudomonas in sera from patients with CF with varying lung function. Sera from patients with CF with reduced lung function show higher anti-outer membrane protein I (OprI) immunoglobulin G1 (IgG1) titers and greater antibody-mediated complement deposition. Induction of anti-OprI antibody isotypes with complement activity enhances lung inflammation in preclinical mouse models. This enhanced inflammation is absent in immunized Rag2-/- mice and is transferrable to unimmunized mice through sera. In a CF cohort undergoing treatment with elexacaftor-tezacaftor-ivacaftor, the declination in anti-OprI IgG1 titers is associated with lung function improvement and reduced hospitalizations. These findings suggest that antibody responses to specific Pseudomonas aeruginosa (PA) antigens worsen lung function in patients with CF.
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Affiliation(s)
- Shiping Lu
- Department of Immunology and Microbiology, Tulane University, New Orleans, LA, USA; Center for Translational Research in Infection and Inflammation, School of Medicine, Tulane University, New Orleans, LA, USA
| | - Kong Chen
- Division of Pulmonary, Allergy and Critical Care Medicine, School of Medicine, University of Pittsburgh, Pittsburgh, PA, USA
| | - Kejing Song
- Center for Translational Research in Infection and Inflammation, School of Medicine, Tulane University, New Orleans, LA, USA
| | - Joseph M Pilewski
- Division of Pulmonary, Allergy and Critical Care Medicine, School of Medicine, University of Pittsburgh, Pittsburgh, PA, USA
| | - Bronwyn M Gunn
- Paul G. Allen School of Global Health, Washington State University, Pullman, WA, USA
| | | | | | - Brian E Vestal
- Center for Genes, Environment and Health, National Jewish Health, Denver, CO, USA
| | | | - Jay K Kolls
- Center for Translational Research in Infection and Inflammation, School of Medicine, Tulane University, New Orleans, LA, USA.
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3
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Ramirez De Oleo I, Kim V, Atisha-Fregoso Y, Shih AJ, Lee K, Diamond B, Kim SJ. Phenotypic and functional characteristics of murine CD11c+ B cells which is suppressed by metformin. Front Immunol 2023; 14:1241531. [PMID: 37744368 PMCID: PMC10512061 DOI: 10.3389/fimmu.2023.1241531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Accepted: 08/21/2023] [Indexed: 09/26/2023] Open
Abstract
Since the description of age-associated or autoimmune-associated B cells (ABCs), there has been a growing interest in the role of these cells in autoimmunity. ABCs are differently defined depending on the research group and are heterogenous subsets. Here, we sought to characterize ABCs in Sle1/2/3 triple congenic (TC) mice, which is a well accepted mouse model of lupus. Compared to follicular (FO) B cells, ABCs have many distinct functional properties, including antigen presentation. They express key costimulatory molecules for T cell activation and a distinct profile of cytokines. Moreover, they exhibit an increased capacity for antigen uptake. ABCs were also compared with germinal center (GC) B cells, which are antigen activated B cell population. There are several phenotypic similarities between ABCs and GC B cells, but GC B cells do not produce proinflammatory cytokines or take up antigen. While T cell proliferation and activation is induced by both FO B and ABCs in an antigen-dependent manner, ABCs induce stronger T cell receptor signaling in naïve CD4+ T cells and preferentially induce differentiation of T follicular helper (Tfh) cells. We found that ABCs exhibit a distinct transcriptomic profile which is focused on metabolism, cytokine signaling and antigen uptake and processing. ABCs exhibit an increase in both glycolysis and oxidative phosphorylation compared to FO B cells. Treatment of ABCs with metformin suppresses antigen presentation by decreasing antigen uptake, resulting in decreased Tfh differentiation. Taken together, these findings define a fundamental connection between metabolism and function within ABCs.
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Affiliation(s)
- Ivan Ramirez De Oleo
- Center for Autoimmune, Musculoskeletal and Hematopoietic Diseases, The Feinstein Institutes for Medical Research, Manhasset, NY, United States
| | - Vera Kim
- Center for Autoimmune, Musculoskeletal and Hematopoietic Diseases, The Feinstein Institutes for Medical Research, Manhasset, NY, United States
| | - Yemil Atisha-Fregoso
- Center for Autoimmune, Musculoskeletal and Hematopoietic Diseases, The Feinstein Institutes for Medical Research, Manhasset, NY, United States
| | - Andrew J. Shih
- Center for Genomics and Human Genetics, The Feinstein Institutes for Medical Research, Manhasset, NY, United States
| | - Kyungwoo Lee
- Center for Autoimmune, Musculoskeletal and Hematopoietic Diseases, The Feinstein Institutes for Medical Research, Manhasset, NY, United States
- Department of Biology at Hofstra University, Hempstead, NY, United States
| | - Betty Diamond
- Center for Autoimmune, Musculoskeletal and Hematopoietic Diseases, The Feinstein Institutes for Medical Research, Manhasset, NY, United States
- Department of Molecular Medicine, Donald and Barbara Zucker School of Medicine at Hofstra University/Northwell, Hempstead, NY, United States
| | - Sun Jung Kim
- Center for Autoimmune, Musculoskeletal and Hematopoietic Diseases, The Feinstein Institutes for Medical Research, Manhasset, NY, United States
- Department of Molecular Medicine, Donald and Barbara Zucker School of Medicine at Hofstra University/Northwell, Hempstead, NY, United States
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4
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Sakaguchi A, Tanaka Y, Shoji E, Takeshima T, Sakamaki R, Matsuba T, Kurihara Y. Rapid, simple, and effective strategy to produce monoclonal antibodies targeting protein structures using hybridoma technology. J Biol Eng 2023; 17:24. [PMID: 36997993 DOI: 10.1186/s13036-023-00345-9] [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: 11/29/2022] [Accepted: 03/22/2023] [Indexed: 04/01/2023] Open
Abstract
BACKGROUND Monoclonal antibodies are essential in life science research and developing antibody drugs and test drugs. Various methods have been developed to obtain monoclonal antibodies, among which hybridoma technology continues to be widely used. However, developing a rapid and efficient method for obtaining conformation-specific antibodies using hybridoma technology remains challenging. We previously developed the membrane-type immunoglobulin-directed hybridoma screening (MIHS) method, which is a flow cytometry-based screening technique based on the interaction between the B-cell receptor expressed on the hybridoma cell surface and the antigen protein, to obtain conformation-specific antibodies. RESULTS In this study, we proposed a streptavidin-anchored ELISA screening technology (SAST) as a secondary screening method that retains the advantages of the MIHS method. Anti-enhanced green fluorescent protein monoclonal antibodies were generated as a model experiment, and their structural recognition abilities were examined. Examination of the reaction profiles showed that all monoclonal antibodies obtained in this study recognize the conformational epitopes of the protein antigen. Furthermore, these monoclonal antibodies were classified into two groups: those with binding activities against partially denatured proteins and those with complete loss of binding activities. Next, when screening monoclonal antibodies by the MIHS method as the first screening, we found that monoclonal antibodies with stronger binding constants may be selected by double-staining for hybridomas with fluorescently labeled target antigens and fluorescently labeled B cell receptor antibodies. CONCLUSIONS The proposed two-step screening method, which incorporates MIHS and SAST, constitutes a rapid, simple, and effective strategy to obtain conformation-specific monoclonal antibodies generated through hybridoma technology. The novel monoclonal antibody screening strategy reported herein could accelerate the development of antibody drugs and antibody tests.
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Affiliation(s)
- Atsumi Sakaguchi
- Laboratory of Molecular Biology, Faculty of Engineering, Yokohama National University, 79-5, Tokiwadai, Hodogaya, Yokohama, Kanagawa, 240-8501, Japan
- Biomaterials Analysis Division, Open Facility Center, Tokyo Institute of Technology, Midori, Yokohama, Kanagawa, Japan
| | - Yoichiro Tanaka
- Instrumental Analysis Center, Yokohama National University, Hodogaya, Yokohama, Kanagawa, Japan
| | - Eiki Shoji
- Laboratory of Molecular Biology, Faculty of Engineering, Yokohama National University, 79-5, Tokiwadai, Hodogaya, Yokohama, Kanagawa, 240-8501, Japan
| | - Teppei Takeshima
- Department of Urology and Renal Transplantation, Yokohama City University Medical Center, Yokohama, Japan
| | - Rina Sakamaki
- Bioscience Division, Tosoh Corporation, Ebina, Kanagawa, Japan
| | - Takao Matsuba
- Bioscience Division, Tosoh Corporation, Ebina, Kanagawa, Japan
| | - Yasuyuki Kurihara
- Laboratory of Molecular Biology, Faculty of Engineering, Yokohama National University, 79-5, Tokiwadai, Hodogaya, Yokohama, Kanagawa, 240-8501, Japan.
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5
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De Biasi S, Paolini A, Lo Tartaro D, Gibellini L, Cossarizza A. Analysis of Antigen-Specific T and B Cells for Monitoring Immune Protection Against SARS-CoV-2. Curr Protoc 2023; 3:e636. [PMID: 36598346 DOI: 10.1002/cpz1.636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Immunological memory is the basis of protection against most pathogens. Long-living memory T and B cells able to respond to specific stimuli, as well as persistent antibodies in plasma and in other body fluids, are crucial for determining the efficacy of vaccination and for protecting from a second infection by a previously encountered pathogen. Antigen-specific cells are represented at a very low frequency in the blood, and indeed, they can be considered "rare events" present in the memory T-cell pool. Therefore, such events should be analyzed with careful attention. In the last 20 years, different methods, mostly based upon flow cytometry, have been developed to identify such rare antigen-specific cells, and the COVID-19 pandemic has given a dramatic impetus to characterize the immune response against the virus. In this regard, we know that the identification, enumeration, and characterization of SARS-CoV-2-specific T and B cells following infection and/or vaccination require i) the use of specific peptides and adequate co-stimuli, ii) the use of appropriate inhibitors to avoid nonspecific activation, iii) the setting of appropriate timing for stimulation, and iv) the choice of adequate markers and reagents to identify antigen-specific cells. Optimization of these procedures allows not only determination of the magnitude of SARS-CoV-2-specific responses but also a comparison of the effects of different combinations of vaccines or determination of the response provided by so-called "hybrid immunity," resulting from a combination of natural immunity and vaccine-generated immunity. Here, we present two methods that are largely used to monitor the response magnitude and phenotype of SARS-CoV-2-specific T and B cells by polychromatic flow cytometry, along with some tips that can be useful for the quantification of these rare events. © 2023 Wiley Periodicals LLC. Basic Protocol 1: Identification of antigen-specific T cells Basic Protocol 2: Identification of antigen-specific B cells.
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Affiliation(s)
- Sara De Biasi
- Department of Medical and Surgical Sciences for Children & Adults, University of Modena and Reggio Emilia, via Campi, Modena, Italy
| | - Annamaria Paolini
- Department of Medical and Surgical Sciences for Children & Adults, University of Modena and Reggio Emilia, via Campi, Modena, Italy
| | - Domenico Lo Tartaro
- Department of Medical and Surgical Sciences for Children & Adults, University of Modena and Reggio Emilia, via Campi, Modena, Italy
| | - Lara Gibellini
- Department of Medical and Surgical Sciences for Children & Adults, University of Modena and Reggio Emilia, via Campi, Modena, Italy
| | - Andrea Cossarizza
- Department of Medical and Surgical Sciences for Children & Adults, University of Modena and Reggio Emilia, via Campi, Modena, Italy.,Istituto Nazionale per le Ricerche Cardiovascolari - INRC, via Irnerio, Bologna, Italy
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6
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Wemlinger SM, Parker Harp CR, Yu B, Hardy IR, Seefeldt M, Matsuda J, Mingueneau M, Spilker KA, Cameron TO, Larrick JW, Getahun A, Cambier JC. Preclinical Analysis of Candidate Anti-Human CD79 Therapeutic Antibodies Using a Humanized CD79 Mouse Model. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2022; 208:1566-1584. [PMID: 35321883 DOI: 10.4049/jimmunol.2101056] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Accepted: 01/18/2022] [Indexed: 11/19/2022]
Abstract
The BCR comprises a membrane-bound Ig that is noncovalently associated with a heterodimer of CD79A and CD79B. While the BCR Ig component functions to sense extracellular Ag, CD79 subunits contain cytoplasmic ITAMs that mediate intracellular propagation of BCR signals critical for B cell development, survival, and Ag-induced activation. CD79 is therefore an attractive target for Ab and chimeric Ag receptor T cell therapies for autoimmunity and B cell neoplasia. Although the mouse is an attractive model for preclinical testing, due to its well-defined immune system, an obstacle is the lack of cross-reactivity of candidate therapeutic anti-human mAbs with mouse CD79. To overcome this problem, we generated knockin mice in which the extracellular Ig-like domains of CD79A and CD79B were replaced with human equivalents. In this study, we describe the generation and characterization of mice expressing chimeric CD79 and report studies that demonstrate their utility in preclinical analysis of anti-human CD79 therapy. We demonstrate that human and mouse CD79 extracellular domains are functionally interchangeable, and that anti-human CD79 lacking Fc region effector function does not cause significant B cell depletion, but induces 1) decreased expression of plasma membrane-associated IgM and IgD, 2) uncoupling of BCR-induced tyrosine phosphorylation and calcium mobilization, and 3) increased expression of PTEN, consistent with the levels observed in anergic B cells. Finally, anti-human CD79 treatment prevents disease development in two mouse models of autoimmunity. We also present evidence that anti-human CD79 treatment may inhibit Ab secretion by terminally differentiated plasmablasts and plasma cells in vitro.
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Affiliation(s)
- Scott M Wemlinger
- Department of Immunology and Microbiology, University of Colorado Denver, Anschutz Medical Campus, Aurora, CO
| | | | - Bo Yu
- Panorama Research Institute, Sunnyvale, CA
| | | | | | - Jennifer Matsuda
- Department of Biomedical Research, National Jewish Health, Denver, CO; and
| | | | | | | | | | - Andrew Getahun
- Department of Immunology and Microbiology, University of Colorado Denver, Anschutz Medical Campus, Aurora, CO
| | - John C Cambier
- Department of Immunology and Microbiology, University of Colorado Denver, Anschutz Medical Campus, Aurora, CO;
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7
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Li Y, Yang L, Yu W, Yu X, Wen K, Shao B, Sun J, Shen J, Wang Z. Highly efficient and precise two-step cell selection method for tetramethylenedisulfotetramine-specific monoclonal antibody production. JOURNAL OF HAZARDOUS MATERIALS 2022; 424:127689. [PMID: 34799173 DOI: 10.1016/j.jhazmat.2021.127689] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 10/29/2021] [Accepted: 10/30/2021] [Indexed: 06/13/2023]
Abstract
Monoclonal antibodies (mAbs) are useful biological tools for research, diagnostics, and pharmaceuticals. Here, we proposed a new mAb discovery platform named the two-step cell selection method (TCSM) for mAbs production of some small molecule haptens as antibiotic, toxins, and pesticides. The first step was performed by a fluorescence-activated cell sorter to enrich the hapten-specific B cells, the second step was an image-based precise pick of single hapten-specific hybridoma cells by confocal laser scanning microscopy. In this study, we used tetramethylenedisulfotetramine (TETS) as a model analyte, which is a highly lethal neurotoxic rodenticide. The TETS-specific hybridoma cells selection was completed within 10 days by the TCSM, compared with at least 40 days in the traditional hybridoma method (THM). The half maximal inhibitory concentration (IC50) of the best mAb 1G6 for TETS in the TCSM was 1.98 ng mL-1, and that of mAb 2B6 in the THM was 11.49 ng mL-1. Antibody-TETS recognition also showed more interactions in mAb 1G6 than in mAb 2B6. Then, the mAb 1G6 was then successfully applied to develop an icELISA for TETS in biological samples with satisfactory sensitivity, accuracy and precision. The results demonstrated that the TCSM was a feasible and efficient method for mAb discovering of poisonous hapten molecules.
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Affiliation(s)
- Yuan Li
- College of Veterinary Medicine, China Agricultural University, Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, Beijing Laboratory of Food Quality and Safety, Beijing 100193, China
| | - Ling Yang
- College of Veterinary Medicine, China Agricultural University, Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, Beijing Laboratory of Food Quality and Safety, Beijing 100193, China; Beijing Vocational College of Agriculture, Beijing 102442, China
| | - Wenbo Yu
- College of Veterinary Medicine, China Agricultural University, Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, Beijing Laboratory of Food Quality and Safety, Beijing 100193, China
| | - Xuezhi Yu
- College of Veterinary Medicine, China Agricultural University, Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, Beijing Laboratory of Food Quality and Safety, Beijing 100193, China
| | - Kai Wen
- College of Veterinary Medicine, China Agricultural University, Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, Beijing Laboratory of Food Quality and Safety, Beijing 100193, China
| | - Bing Shao
- Beijing Key Laboratory of Diagnostic and Traceability Technologies for Food poisoning, Beijing Center for Disease Prevention and Control, Beijing 100013, China
| | - Jiefang Sun
- Beijing Key Laboratory of Diagnostic and Traceability Technologies for Food poisoning, Beijing Center for Disease Prevention and Control, Beijing 100013, China
| | - Jianzhong Shen
- College of Veterinary Medicine, China Agricultural University, Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, Beijing Laboratory of Food Quality and Safety, Beijing 100193, China
| | - Zhanhui Wang
- College of Veterinary Medicine, China Agricultural University, Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, Beijing Laboratory of Food Quality and Safety, Beijing 100193, China.
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8
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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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9
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Agazio A, Cimons J, Shotts KM, Guo K, Santiago ML, Pelanda R, Torres RM. Histone H2A-Reactive B Cells Are Functionally Anergic in Healthy Mice With Potential to Provide Humoral Protection Against HIV-1. Front Immunol 2020; 11:1565. [PMID: 32849530 PMCID: PMC7396680 DOI: 10.3389/fimmu.2020.01565] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Accepted: 06/15/2020] [Indexed: 11/13/2022] Open
Abstract
Peripheral tolerance is essential for silencing weakly autoreactive B cells that have escaped central tolerance, but it is unclear why these potentially pathogenic B cells are retained rather than being eliminated entirely. Release from peripheral tolerance restraint can occur under certain circumstances (i.e., strong TLR stimulus), that are present during infection. In this regard, we hypothesized that autoreactive B cells could function as a reserve population that can be activated to contribute to the humoral immune response, particularly with pathogens, such as HIV-1, that exploit immune tolerance to avoid host defense. In this study, we identify a population of autoreactive B cells with the potential to neutralize HIV-1 and experimentally release them from the functional restrictions of peripheral tolerance. We have previously identified murine monoclonal antibodies that displayed autoreactivity against histone H2A and neutralized HIV-1 in vitro. Here, we identify additional H2A-reactive IgM monoclonal antibodies and demonstrate that they are both autoreactive and polyreactive with self and foreign antigens and are able to neutralize multiple clades of tier 2 HIV-1. Flow cytometric analysis of H2A-reactive B cells in naïve wildtype mice revealed that these B cells are present in peripheral B cell populations and we further document that murine H2A-reactive B cells are restrained by peripheral tolerance mechanisms. Specifically, we show endogenous H2A-reactive B cells display increased expression of the inhibitory mediators CD5 and phosphatase and tensin homolog (PTEN) phosphatase and fail to mobilize calcium upon immunoreceptor stimulation; all characterized markers of anergy. Moreover, we show that toll-like receptor stimulation or provision of CD4 T cell help induces the in vitro production of H2A-reactive antibodies, breaking tolerance. Thus, we have identified a novel poly/autoreactive B cell population that has the potential to neutralize HIV-1 but is silenced by immune tolerance.
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Affiliation(s)
- Amanda Agazio
- Department of Immunology & Microbiology, University of Colorado, Aurora, CO, United States
| | - Jennifer Cimons
- Department of Immunology & Microbiology, University of Colorado, Aurora, CO, United States
| | - Kristin M. Shotts
- Department of Immunology & Microbiology, University of Colorado, Aurora, CO, United States
| | - Kejun Guo
- Department of Medicine, Division of Infectious Diseases, School of Medicine, University of Colorado, Aurora, CO, United States
| | - Mario L. Santiago
- Department of Medicine, Division of Infectious Diseases, School of Medicine, University of Colorado, Aurora, CO, United States
| | - Roberta Pelanda
- Department of Immunology & Microbiology, University of Colorado, Aurora, CO, United States
| | - Raul M. Torres
- Department of Immunology & Microbiology, University of Colorado, Aurora, CO, United States
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10
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Giles AR, Calcedo R, Tretiakova AP, Wilson JM. Isolating Human Monoclonal Antibodies Against Adeno-Associated Virus From Donors With Pre-existing Immunity. Front Immunol 2020; 11:1135. [PMID: 32733434 PMCID: PMC7358261 DOI: 10.3389/fimmu.2020.01135] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Accepted: 05/11/2020] [Indexed: 11/27/2022] Open
Abstract
With the advent of single B-cell cloning technology, we can isolate antibodies against virtually any antigen to study the interaction of a given pathogen with the immune system and develop novel therapeutic strategies. Antibodies directed against the capsid of adeno-associated viruses (AAV) are a significant obstacle to effectively leveraging AAV as a gene-delivery vector in seropositive individuals. In order to design next-generation vectors that can evade neutralization by these antibodies, studies have mapped the epitopes of mouse monoclonal antibodies generated by immunization with AAV. Although these studies provide critical information regarding capsid immunogenicity, they cannot address (1) differences in the antibody repertoire generated in humans following AAV natural infection; or (2) how reactions can vary when generated in response to vector administration. Here, we isolated and evaluated a panel of novel, fully human anti-AAV antibodies by cloning single memory B cells from a seropositive normal donor. We have validated the utility of this approach to study AAV immunology. Our goal is to leverage this knowledge to design novel AAV variants that can effectively transduce target tissues in individuals with AAV-neutralizing antibodies.
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Affiliation(s)
| | | | | | - James M. Wilson
- Gene Therapy Program, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States
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11
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Lamb CL, Price E, Field KP, Dayton C, McIndoo ER, Katahira EJ, Stevens DL, Hobdey SE. Enrichment of Antigen-Specific Class-Switched B Cells from Individuals Naturally Immunized by Infection with Group A Streptococcus. mSphere 2019; 4:e00598-19. [PMID: 31694896 PMCID: PMC6835209 DOI: 10.1128/msphere.00598-19] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Accepted: 10/17/2019] [Indexed: 01/17/2023] Open
Abstract
The low frequency of circulating antigen-specific memory B cells is a considerable obstacle in the discovery and development of human monoclonal antibodies for therapeutic application. Here, we evaluate two solid-phase isolation methods to enrich the number of antigen-specific B cells from individuals naturally immunized against streptolysin O (SLO), a key virulence factor and known immunogen of group A streptococcus (GAS). Class-switched B cells obtained from individuals with a history of GAS infection were separated from peripheral blood mononuclear cells (PBMCs) by immunomagnetic methods. SLO-specific B cells were further enriched directly by binding to SLO monomers and captured by streptavidin-coated magnetic microbeads or indirectly by binding a fluorescently labeled SLO-streptavidin tetramer and captured by anti-fluorophore immunomagnetic microbeads. SLO-bound B cells were quantitated by flow cytometry and/or expanded in batch culture to determine IgG specificity. From individuals who have suffered a GAS infection ≥2 years prior, only the direct method enriched SLO-specific B cells, as determined by flow cytometry. Likewise, in batch culture, B cells isolated by the direct method resulted in an average of 375-fold enrichment in anti-SLO IgG, while no enrichment was observed for B cells isolated by the indirect method. The direct method established here provides a simple approach to increase low-frequency antigen-specific B cell populations supporting many downstream applications, such as immortalization of B cells, cloning of immunoglobulin genes, or purification of antibodies from supernatant for future study. Overall, this process is efficient, is inexpensive, and can be applied to many naturally immunogenic antigens.IMPORTANCE Bacteria called group A streptococci can cause a variety of skin and soft tissue infections ranging from mild pharyngitis ("strep throat") to deadly necrotizing fasciitis (sometimes called "flesh-eating" disease). In each case, the development of disease and the degree of tissue damage are mediated by toxins released from the bacteria during infection. Consequently, novel therapies aimed at clearing bacterial toxins are greatly needed. One promising new treatment is the utilization of monoclonal antibodies delivered as an immunotherapeutic for toxin neutralization. However, current methods of antibody development are laborious and costly. Here, we report a method to enrich and increase the detection of highly desirable antigen-specific memory B cells from individuals previously exposed to GAS using a cost-effective and less-time-intensive strategy. We envision that this method will be incorporated into many applications supporting the development of immunotherapeutics.
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Affiliation(s)
- Cheri L Lamb
- Infectious Diseases Section, Veteran Affairs Medical Center, Boise, Idaho, USA
- Idaho Veterans Research and Education Foundation, Boise, Idaho, USA
| | - Emily Price
- Infectious Diseases Section, Veteran Affairs Medical Center, Boise, Idaho, USA
- Idaho Veterans Research and Education Foundation, Boise, Idaho, USA
| | - Kevin P Field
- Infectious Diseases Section, Veteran Affairs Medical Center, Boise, Idaho, USA
- Idaho Veterans Research and Education Foundation, Boise, Idaho, USA
| | - Christopher Dayton
- Infectious Diseases Section, Veteran Affairs Medical Center, Boise, Idaho, USA
- Idaho Veterans Research and Education Foundation, Boise, Idaho, USA
| | - Eric R McIndoo
- Infectious Diseases Section, Veteran Affairs Medical Center, Boise, Idaho, USA
| | - Eva J Katahira
- Infectious Diseases Section, Veteran Affairs Medical Center, Boise, Idaho, USA
| | - Dennis L Stevens
- Infectious Diseases Section, Veteran Affairs Medical Center, Boise, Idaho, USA
- Idaho Veterans Research and Education Foundation, Boise, Idaho, USA
- University of Washington School of Medicine, Seattle, Washington, USA
| | - Sarah E Hobdey
- Infectious Diseases Section, Veteran Affairs Medical Center, Boise, Idaho, USA
- Idaho Veterans Research and Education Foundation, Boise, Idaho, USA
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12
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Lomakin YA, Kaminskaya AN, Stepanov AV, Shmidt AA, Gabibov AG, Belogurov AA. High-Throughput Platform for B-Cell Screening Based on Fluorescent Phage-Display Technology. Bull Exp Biol Med 2019; 167:446-451. [PMID: 31493253 DOI: 10.1007/s10517-019-04546-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Indexed: 12/12/2022]
Abstract
A system for detection of malignantly transformed cells, including follicular lymphoma Bcells, was developed and experimentally validated. The system is based on the use of bacteriophages carrying exposed ligands for pathogenic B-cell receptors. The efficiency of binding to target cells is several times higher than in systems with chemically synthesized biotinylated peptides. The new method is proposed as a noninvasive diagnostic test for mapping B-cell lymphoma and for determining the specificity of B-cell receptors and high-throughput combinatorial selection of various repertories of B cells.
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Affiliation(s)
- Ya A Lomakin
- M. M. Shemyakin and Yu. A. Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia.
- Kazan (Volga region) Federal University, Kazan, Republic of Tatarstan, Russia.
| | - A N Kaminskaya
- M. M. Shemyakin and Yu. A. Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
| | - A V Stepanov
- M. M. Shemyakin and Yu. A. Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
- Kazan (Volga region) Federal University, Kazan, Republic of Tatarstan, Russia
| | - A A Shmidt
- M. M. Shemyakin and Yu. A. Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
| | - A G Gabibov
- M. M. Shemyakin and Yu. A. Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
- M. V. Lomonosov Moscow State University, Moscow, Russia
| | - A A Belogurov
- M. M. Shemyakin and Yu. A. Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
- M. V. Lomonosov Moscow State University, Moscow, Russia
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13
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Andreano E, Seubert A, Rappuoli R. Human monoclonal antibodies for discovery, therapy, and vaccine acceleration. Curr Opin Immunol 2019; 59:130-134. [PMID: 31450054 DOI: 10.1016/j.coi.2019.07.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Revised: 04/08/2019] [Accepted: 07/18/2019] [Indexed: 01/24/2023]
Abstract
Screening of single B cells from convalescent or vaccinated people allows the discovery of novel targets for infectious diseases and rapid production of engineered human monoclonal antibodies (mAbs) that can prevent or control infections by passive immunization. Here we propose that the development of human mAbs can also significantly accelerate vaccine development by anticipating some of the key biological and regulatory questions.
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Affiliation(s)
| | | | - Rino Rappuoli
- vAMRes Lab, Toscana Life Sciences, Siena, Italy; GSK, Siena, Italy; Imperial College, London, United Kingdom.
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14
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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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15
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Lomakin YA, Kaminskaya AN, Stepanov AV, Shmidt AA, Gabibov AG, Belogurov AA. Probing Surface Membrane Receptors Using Engineered Bacteriophage Bioconjugates. Bioconjug Chem 2019; 30:1500-1506. [PMID: 31021608 DOI: 10.1021/acs.bioconjchem.9b00218] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Specific recognition of ligands by surface receptors of eukaryotic cells is a fundamental process in sensing of the exogenous environment, including cell-to-cell communication. These interactions are therefore widely probed in both basic studies and drug development to enhance or interrupt them. Here, we designed a high-throughput publicly available platform for visualization and selection of eukaryotic cells according to the specificity of surface-exposed receptors by consolidation of phage display and flow cytometry techniques. Polypeptide ligands for membrane receptors are incorporated into every copy of p3 protein of M13K07 bacteriophage, which is intracellularly biotinylated to further accept PE-Cy7-labled streptavidin. Transgenic antigen-specific B-cells expressing membrane-tethered lymphoid B-cell receptor in a single-chain format interacted with engineered bacteriophages exposing the polypeptide ligand with an unprecedented selectivity of 97% and a false-positive detection value of 2.0%. Multivalent binding of the phage bioconjugates with the receptor provided significantly better specificity and sensitivity allowing application of engineered bacteriophage bioconjugates at a concentration 3 orders of magnitude lower in comparison with synthetic biotinylated peptide. We suggest that the platform described in this work may be applied either for routine staining or characterization of orphan membrane receptors exposed on the surface of living mammalian cells in their native environment.
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Affiliation(s)
- Yakov A Lomakin
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry RAS , Moscow , Russia , 117997.,Institute of Fundamental Medicine and Biology , Kazan Federal University , Kazan , Russia , 420012
| | - Alena N Kaminskaya
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry RAS , Moscow , Russia , 117997
| | - Alexey V Stepanov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry RAS , Moscow , Russia , 117997.,Institute of Fundamental Medicine and Biology , Kazan Federal University , Kazan , Russia , 420012
| | - Anna A Shmidt
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry RAS , Moscow , Russia , 117997
| | - Alexander G Gabibov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry RAS , Moscow , Russia , 117997.,Lomonosov Moscow State University , Moscow , Russia , 119991
| | - Alexey A Belogurov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry RAS , Moscow , Russia , 117997.,Lomonosov Moscow State University , Moscow , Russia , 119991
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16
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Measuring Alloreactive B Cell Responses in Transplant Recipients. CURRENT TRANSPLANTATION REPORTS 2019. [DOI: 10.1007/s40472-019-00234-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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17
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Hasgur S, Valujskikh A. Measuring alloreactive B cell responses in transplant recipients. CURRENT TRANSPLANTATION REPORTS 2019; 6:99-105. [PMID: 31588407 PMCID: PMC6777871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
PURPOSE Despite advanced immunosuppression, donor-specific antibodies (DSA) remain the leading cause of acute and chronic transplant tissue injury. Comprehensive evaluation of anti-donor humoral immune responses is critical for successful prevention, diagnosis and treatment of antibody-mediated rejection. This review summarizes the evolution of techniques used for this purpose in experimental and clinical transplantation. RECENT FINDINGS For decades, measuring DSA serum levels was the only way to assess recipient humoral immunity. Recently, the interest shifted from quantifying circulating DSA to the analyses of various B cell subsets and most importantly, of donor antigen-specific B cells. State-of-the-art approaches have been developed by studies of model antigens, infectious agents and autoimmunity. These methods are now being adopted by the transplantation field. SUMMARY The complexity of humoral immunity caused by organ transplantation necessitates complementary approaches assessing both DSA and various B cell subsets to successfully target antibody-mediated rejection.
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Affiliation(s)
- Suheyla Hasgur
- Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio 44195, USA
| | - Anna Valujskikh
- Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio 44195, USA
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18
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Aliprandini E, Takata DY, Lepique A, Kalil J, Boscardin SB, Moro AM. An oligoclonal combination of human monoclonal antibodies able to neutralize tetanus toxin in vivo. Toxicon X 2019; 2:100006. [PMID: 32550563 PMCID: PMC7285915 DOI: 10.1016/j.toxcx.2019.100006] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Revised: 12/27/2018] [Accepted: 01/10/2019] [Indexed: 12/01/2022] Open
Abstract
The use of antibody-based therapy to treat a variety of diseases and conditions is well documented. The use of antibodies as an antidote to treat tetanus infections was one of the first examples of immunotherapy and remains the standard of care for cases involving potential infections. Plasma-derived immunoglobulins obtained from human or horse pose risks of infection from undetectable emergent viruses or may cause anaphylaxis. Further, there is a lack of consistency between lots. In the search for new formulations, we obtained a series of clonally related human monoclonal antibodies (mAbs) derived from B cells sorted from donors that presented anti-tetanus neutralizing titers. Donors were revaccinated prior to blood collection. Different strategies were used for single-cell sorting, since it was challenging to identify cells at a very low frequency: memory B cell sorting using fluorescent-labeled tetanus toxoid and toxin as baits, and plasmablast sorting done shortly after revaccination. Screening of the recombinant mAbs with the whole tetanus toxin allowed us to select candidates with therapeutic potential, since mAbs to different domains can contribute additively to the neutralizing effect. Because of selective binding to different domains, we tested mAbs individually, or in mixtures of two or three, in the neutralizing in vivo assay specified by Pharmacopeia for the determination of polyclonal hyperimmune sera potency. An oligoclonal mixture of three human mAbs completely neutralized the toxin injected in the animals, signaling an important step for clinical mAb development.
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Affiliation(s)
- Eduardo Aliprandini
- Laboratory of Biopharmaceuticals in Animal Cells, Instituto Butantan, São Paulo, Brazil.,Interunits Graduate Program in Biotechnology, University of São Paulo, Brazil
| | - Daniela Yumi Takata
- Laboratory of Biopharmaceuticals in Animal Cells, Instituto Butantan, São Paulo, Brazil.,Interunits Graduate Program in Biotechnology, University of São Paulo, Brazil
| | - Ana Lepique
- Dept of Immunology, Biomedical Sciences Institute, University of São Paulo, Brazil
| | - Jorge Kalil
- Laboratory of Immunology, School of Medicine, University of São Paulo, São Paulo, Brazil.,Institute for Investigation in Immunology, iii - INCT (National Institute of Science and Technology), São Paulo, Brazil
| | - Silvia Beatriz Boscardin
- Dept of Parasitology, Biomedical Sciences Institute, University of São Paulo, Brazil.,Institute for Investigation in Immunology, iii - INCT (National Institute of Science and Technology), São Paulo, Brazil
| | - Ana Maria Moro
- Laboratory of Biopharmaceuticals in Animal Cells, Instituto Butantan, São Paulo, Brazil.,Institute for Investigation in Immunology, iii - INCT (National Institute of Science and Technology), São Paulo, Brazil
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19
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Smith MJ, Hinman RM, Getahun A, Kim S, Packard TA, Cambier JC. Silencing of high-affinity insulin-reactive B lymphocytes by anergy and impact of the NOD genetic background in mice. Diabetologia 2018; 61:2621-2632. [PMID: 30255377 PMCID: PMC6219930 DOI: 10.1007/s00125-018-4730-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Accepted: 08/16/2018] [Indexed: 12/22/2022]
Abstract
AIMS/HYPOTHESIS Previous studies have demonstrated that high-affinity insulin-binding B cells (IBCs) silenced by anergy in healthy humans lose their anergy in islet autoantibody-positive individuals with recent-onset type 1 diabetes, and in autoantibody-negative first-degree relatives carrying certain risk alleles. Here we explore the hypothesis that IBCs are found in the immune periphery of disease-resistant C57BL/6-H2g7 mice, where, as in healthy humans, they are anergic, but that in disease-prone genetic backgrounds (NOD) they become activated and migrate to the pancreas and pancreatic lymph nodes, where they participate in the development of type 1 diabetes. METHODS We compared the status of high-affinity IBCs in disease-resistant VH125.C57BL/6-H2g7 and disease-prone VH125.NOD mice. RESULTS Consistent with findings in healthy humans, high-affinity IBCs reach the periphery in disease-resistant mice and are anergic, as indicated by a reduced expression of membrane IgM, unresponsiveness to antigen and failure to become activated or accumulate in the pancreatic lymph nodes or pancreas. In NOD mice, high-affinity IBCs reach the periphery early in life and increase in number prior to the onset of hyperglycaemia. These cells are not anergic; they become activated, produce autoantibodies and accumulate in the pancreas and pancreatic lymph nodes prior to disease development. CONCLUSIONS/INTERPRETATION These findings are consistent with genetic determination of the escape of high-affinity IBCs from anergy and their early contribution to the development of type 1 diabetes.
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Affiliation(s)
- Mia J Smith
- Department of Immunology and Microbiology, University of Colorado School of Medicine, P18-8100, RC1 North, 12800 East 19th Avenue, Aurora, CO, 80045-2537, USA
- Department of Microbiology, Immunology, and Pathology, Colorado State University, Fort Collins, CO, USA
| | - Rochelle M Hinman
- Department of Immunology and Microbiology, University of Colorado School of Medicine, P18-8100, RC1 North, 12800 East 19th Avenue, Aurora, CO, 80045-2537, USA
| | - Andrew Getahun
- Department of Immunology and Microbiology, University of Colorado School of Medicine, P18-8100, RC1 North, 12800 East 19th Avenue, Aurora, CO, 80045-2537, USA
| | - Soojin Kim
- Department of Immunology and Microbiology, University of Colorado School of Medicine, P18-8100, RC1 North, 12800 East 19th Avenue, Aurora, CO, 80045-2537, USA
| | - Thomas A Packard
- Department of Immunology and Microbiology, University of Colorado School of Medicine, P18-8100, RC1 North, 12800 East 19th Avenue, Aurora, CO, 80045-2537, USA
| | - John C Cambier
- Department of Immunology and Microbiology, University of Colorado School of Medicine, P18-8100, RC1 North, 12800 East 19th Avenue, Aurora, CO, 80045-2537, USA.
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20
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Smith MJ, Rihanek M, Wasserfall C, Mathews CE, Atkinson MA, Gottlieb PA, Cambier JC. Loss of B-Cell Anergy in Type 1 Diabetes Is Associated With High-Risk HLA and Non-HLA Disease Susceptibility Alleles. Diabetes 2018; 67:697-703. [PMID: 29343548 PMCID: PMC5860860 DOI: 10.2337/db17-0937] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Accepted: 01/12/2018] [Indexed: 12/18/2022]
Abstract
Although B cells reactive with islet autoantigens are silenced by tolerance mechanisms in healthy individuals, they can become activated and contribute to the development of type 1 diabetes. We previously demonstrated that high-affinity insulin-binding B cells (IBCs) occur exclusively in the anergic (BND) compartment in peripheral blood of healthy subjects. Consistent with their activation early in disease development, high-affinity IBCs are absent from the BND compartment of some first-degree relatives (FDRs) as well as all patients with autoantibody-positive prediabetes and new-onset type 1 diabetes, a time when they are found in pancreatic islets. Loss of BND IBCs is associated with a loss of the entire BND B-cell compartment consistent with provocation by an environmental trigger or predisposing genetic factors. To investigate potential mechanisms operative in subversion of B-cell tolerance, we explored associations between HLA and non-HLA type 1 diabetes-associated risk allele genotypes and loss of BNDs in FDRs. We found that high-risk HLA alleles and a subset of non-HLA risk alleles (i.e., PTPN2 [rs1893217], INS [rs689], and IKZF3 [rs2872507]), relevant to B- and T-cell development and function are associated with loss of anergy. Hence, the results suggest a role for risk-conferring alleles in perturbation of B-cell anergy during development of type 1 diabetes.
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Affiliation(s)
- Mia J Smith
- Department of Immunology and Microbiology, University of Colorado School of Medicine, Aurora, CO
- Department of Microbiology, Immunology, and Pathology, Colorado State University, Fort Collins, CO
| | - Marynette Rihanek
- Barbara Davis Center for Childhood Diabetes, University of Colorado School of Medicine, Aurora, CO
| | - Clive Wasserfall
- Department of Pathology, Immunology, and Laboratory Medicine, University of Florida College of Medicine, Gainesville, FL
| | - Clayton E Mathews
- Department of Pathology, Immunology, and Laboratory Medicine, University of Florida College of Medicine, Gainesville, FL
| | - Mark A Atkinson
- Department of Pathology, Immunology, and Laboratory Medicine, University of Florida College of Medicine, Gainesville, FL
- Department of Pediatrics, University of Florida College of Medicine, Gainesville, FL
| | - Peter A Gottlieb
- Barbara Davis Center for Childhood Diabetes, University of Colorado School of Medicine, Aurora, CO
| | - John C Cambier
- Department of Immunology and Microbiology, University of Colorado School of Medicine, Aurora, CO
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21
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Smith MJ, Rihanek M, Coleman BM, Gottlieb PA, Sarapura VD, Cambier JC. Activation of thyroid antigen-reactive B cells in recent onset autoimmune thyroid disease patients. J Autoimmun 2017; 89:82-89. [PMID: 29233566 DOI: 10.1016/j.jaut.2017.12.001] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2017] [Revised: 11/26/2017] [Accepted: 12/03/2017] [Indexed: 12/13/2022]
Abstract
Autoimmune thyroid disease (AITD), including Hashimoto's thyroiditis (HT) and Graves' disease (GD), is the most common autoimmune disorder in the United States, affecting over 20 million people. At the time of diagnosis, both HD and GD are characterized by the accumulation of B and T lymphocytes in the thyroid gland and production of autoantibodies targeting the thyroid, indicating that a breach in tolerance of autoreactive lymphocytes has occurred. However, few studies have sought to understand the underlying pathogenesis of AITD that ultimately leads to production of autoantibodies and loss of thyroid function. In this study, we analyzed the phenotype of thyroid antigen-reactive B cells in the peripheral blood of recent onset and long standing AITD patients. We found that in recent onset patients thyroid antigen-reactive B cells in blood no longer appear anergic, rather they express CD86, a marker of activation. This likely reflects activation of these cells leading to their production of autoantibodies. Hence, this study reports the early loss of anergy in thyroid antigen-reactive B cells, an event that contributes to development of AITD.
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Affiliation(s)
- Mia J Smith
- Department of Immunology and Microbiology, University of Colorado School of Medicine, Aurora, CO, USA; Department of Microbiology, Immunology, and Pathology, Colorado State University, Fort Collins, CO, USA
| | - Marynette Rihanek
- Barbara Davis Center for Childhood Diabetes, University of Colorado School of Medicine, Aurora, CO, USA
| | - Brianne M Coleman
- Department of Immunology and Microbiology, University of Colorado School of Medicine, Aurora, CO, USA
| | - Peter A Gottlieb
- Barbara Davis Center for Childhood Diabetes, University of Colorado School of Medicine, Aurora, CO, USA
| | - Virginia D Sarapura
- Division of Endocrinology, Metabolism, and Diabetes, University of Colorado Health Sciences Center, Aurora, CO, USA
| | - John C Cambier
- Department of Immunology and Microbiology, University of Colorado School of Medicine, Aurora, CO, USA.
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