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Nessler JN, Tipold A. Immunoglobulin profiling with large high-density peptide microarrays as screening method to detect candidate proteins for future biomarker detection in dogs with steroid-responsive meningitis-arteritis. PLoS One 2023; 18:e0284010. [PMID: 37036858 PMCID: PMC10085023 DOI: 10.1371/journal.pone.0284010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Accepted: 03/22/2023] [Indexed: 04/11/2023] Open
Abstract
Steroid responsive meningitis arteritis (SRMA) is an aberrant Th2-mediated systemic inflammatory disease in dogs. The etiopathogenesis still remains unclear as no triggering pathogen or autoantigen could be found so far. HYPOTHESIS Large high-density peptide microarrays are a suitable screening method to detect possible autoantigens which might be involved in the pathogenesis of SRMA. METHODS The IgA and IgG profile of pooled serum samples of 5 dogs with SRMA and 5 dogs with neck pain due to intervertebral disc herniation (IVDH) without ataxia or paresis were compared via commercially available high-density peptide microarrays (Discovery Microarray) containing 29,240 random linear peptides. Canine distemper virus nucleoprotein (CDVN) served as positive control as all dogs were vaccinated. Common motifs were compared to amino acid sequences of known proteins via databank search. One suitable protein was manually selected for further analysis with a smaller customized high-density peptide microarray. RESULTS Pooled serum of dogs with SRMA and IVDH showed different IgA and IgG responses on Discovery Microarray. Only top IgG responses of dogs with SRMA showed a common motif not related to the control protein CDVN. This common motif is part of the interleukin 1 receptor antagonist protein (IL1Ra). On IL1Ra, dogs with SRMA displayed IgA binding to an additional epitope, which dogs with IVDH did not show. DISCUSSION IL1Ra is an anti-inflammatory acute phase protein. Different immunoglobulin binding patterns on IL1Ra could be involved in the pathogenesis of SRMA and IL1Ra might be developed as future biomarker for SRMA.
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Affiliation(s)
- Jasmin Nicole Nessler
- Department of Small Animal Medicine and Surgery, University of Veterinary Medicine Foundation, Hannover, Germany
| | - Andrea Tipold
- Department of Small Animal Medicine and Surgery, University of Veterinary Medicine Foundation, Hannover, Germany
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2
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Patel SR, Lundgren TS, Baldwin WH, Cox C, Parker ET, Healey JF, Jajosky RP, Zerra PE, Josephson CD, Doering CB, Stowell SR, Meeks SL. Neutralizing Antibodies Against Factor VIII Can Occur Through a Non-Germinal Center Pathway. Front Immunol 2022; 13:880829. [PMID: 35634288 PMCID: PMC9132091 DOI: 10.3389/fimmu.2022.880829] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Accepted: 04/12/2022] [Indexed: 11/13/2022] Open
Abstract
Humoral immunity to factor VIII (FVIII) represents a significant challenge for the treatment of patients with hemophilia A. Current paradigms indicate that neutralizing antibodies against FVIII (inhibitors) occur through a classical CD4 T cell, germinal center (GC) dependent process. However, clinical observations suggest that the nature of the immune response to FVIII may differ between patients. While some patients produce persistent low or high inhibitor titers, others generate a transient response. Moreover, FVIII reactive memory B cells are only detectable in some patients with sustained inhibitor titers. The determinants regulating the type of immune response a patient develops, let alone how the immune response differs in these patients remains incompletely understood. One hypothesis is that polymorphisms within immunoregulatory genes alter the underlying immune response to FVIII, and thereby the inhibitor response. Consistent with this, studies report that inhibitor titers to FVIII differ in animals with the same F8 pathogenic variant but completely distinct backgrounds; though, how these genetic disparities affect the immune response to FVIII remains to be investigated. Given this, we sought to mechanistically dissect how genetics impact the underlying immune response to FVIII. In particular, as the risk of producing inhibitors is weakly associated with differences in HLA, we hypothesized that genetic factors other than HLA influence the immune response to FVIII and downstream inhibitor formation. Our data demonstrate that FVIII deficient mice encoding the same MHC and F8 variant produce disparate inhibitor titers, and that the type of inhibitor response formed associates with the ability to generate GCs. Interestingly, the formation of antibodies through a GC or non-GC pathway does not appear to be due to differences in CD4 T cell immunity, as the CD4 T cell response to an immunodominant epitope in FVIII was similar in these mice. These results indicate that genetics can impact the process by which inhibitors develop and may in part explain the apparent propensity of patients to form distinct inhibitor responses. Moreover, these data highlight an underappreciated immunological pathway of humoral immunity to FVIII and lay the groundwork for identification of biomarkers for the development of approaches to tolerize against FVIII.
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Affiliation(s)
- Seema R Patel
- Aflac Cancer and Blood Disorders Center, Children's Healthcare of Atlanta/Emory University School of Medicine, Atlanta, GA, United States
| | - Taran S Lundgren
- Aflac Cancer and Blood Disorders Center, Children's Healthcare of Atlanta/Emory University School of Medicine, Atlanta, GA, United States.,Graduate Program in Molecular and Systems Pharmacology, Laney Graduate School, Emory University School of Medicine, Atlanta, GA, United States
| | - Wallace Hunter Baldwin
- Aflac Cancer and Blood Disorders Center, Children's Healthcare of Atlanta/Emory University School of Medicine, Atlanta, GA, United States
| | - Courtney Cox
- Aflac Cancer and Blood Disorders Center, Children's Healthcare of Atlanta/Emory University School of Medicine, Atlanta, GA, United States
| | - Ernest T Parker
- Aflac Cancer and Blood Disorders Center, Children's Healthcare of Atlanta/Emory University School of Medicine, Atlanta, GA, United States
| | - John F Healey
- Aflac Cancer and Blood Disorders Center, Children's Healthcare of Atlanta/Emory University School of Medicine, Atlanta, GA, United States
| | - Ryan P Jajosky
- Brigham and Women's Hospital, Harvard Medical School, Boston, MA, United States
| | - Patricia E Zerra
- Aflac Cancer and Blood Disorders Center, Children's Healthcare of Atlanta/Emory University School of Medicine, Atlanta, GA, United States.,Center for Transfusion Medicine and Cellular Therapies, Department of Laboratory Medicine and Pathology, Emory University School of Medicine, Atlanta, GA, United States
| | - Cassandra D Josephson
- Aflac Cancer and Blood Disorders Center, Children's Healthcare of Atlanta/Emory University School of Medicine, Atlanta, GA, United States
| | - Christopher B Doering
- Aflac Cancer and Blood Disorders Center, Children's Healthcare of Atlanta/Emory University School of Medicine, Atlanta, GA, United States
| | - Sean R Stowell
- Brigham and Women's Hospital, Harvard Medical School, Boston, MA, United States
| | - Shannon L Meeks
- Aflac Cancer and Blood Disorders Center, Children's Healthcare of Atlanta/Emory University School of Medicine, Atlanta, GA, United States
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3
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Rampoldi F, Donato E, Ullrich L, Deseke M, Janssen A, Demera A, Sandrock I, Bubke A, Juergens AL, Swallow M, Sparwasser T, Falk C, Tan L, Trumpp A, Prinz I. γδ T cells license immature B cells to produce a broad range of polyreactive antibodies. Cell Rep 2022; 39:110854. [PMID: 35613579 DOI: 10.1016/j.celrep.2022.110854] [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: 06/17/2021] [Revised: 03/03/2022] [Accepted: 05/02/2022] [Indexed: 11/03/2022] Open
Abstract
Immature autoreactive B cells are present in all healthy individuals, but it is unclear which signals are required for their maturation into antibody-producing cells. Inducible depletion of γδ T cells show that direct interaction between γδ T cells and immature B cells in the spleen support an "innate" transition to mature B cells with a broad range of antigen specificities. IL-4 production of γδ T cells and cell-to-cell contact via CD30L support B cell maturation and induce genes of the unfolded protein response and mTORC1 signaling. Eight days after in vivo depletion of γδ T cells, increased numbers of B cells are already stuck in the transitional phase and express increased levels of IgD and CD21. Absence of γδ T cells leads also to reduced levels of serum anti-nuclear autoantibodies, making γδ T cells an attractive target to treat autoimmunity.
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Affiliation(s)
- Francesca Rampoldi
- Institute of Immunology, Hannover Medical School, Hannover 30625, Germany; Institute of Medical Microbiology and Hygiene and Research Center for Immunotherapy (FZI), University Medical Center of the Johannes Gutenberg-University, Mainz 55131, Germany
| | - Elisa Donato
- Division of Stem Cells and Cancer, German Cancer Research Center (DKFZ) and DKFZ-ZMBH Alliance, Heidelberg 69120, Germany; Heidelberg Institute for Stem Cell Technology and Experimental Medicine (HI-STEM GmbH), Heidelberg 69120, Germany
| | - Leon Ullrich
- Institute of Immunology, Hannover Medical School, Hannover 30625, Germany
| | - Malte Deseke
- Institute of Immunology, Hannover Medical School, Hannover 30625, Germany
| | - Anika Janssen
- Institute of Immunology, Hannover Medical School, Hannover 30625, Germany
| | - Abdi Demera
- Institute of Immunology, Hannover Medical School, Hannover 30625, Germany
| | - Inga Sandrock
- Institute of Immunology, Hannover Medical School, Hannover 30625, Germany
| | - Anja Bubke
- Institute of Immunology, Hannover Medical School, Hannover 30625, Germany
| | - Anna-Lena Juergens
- Institute of Immunology, Hannover Medical School, Hannover 30625, Germany
| | - Maxine Swallow
- Institute of Infection Immunology, TWINCORE, Centre for Experimental and Clinical Infection Research; a Joint Venture Between the Medical School Hannover (MHH) and the Helmholtz Centre for Infection Research (HZI), Hannover 30625, Germany
| | - Tim Sparwasser
- Institute of Medical Microbiology and Hygiene and Research Center for Immunotherapy (FZI), University Medical Center of the Johannes Gutenberg-University, Mainz 55131, Germany; Institute of Infection Immunology, TWINCORE, Centre for Experimental and Clinical Infection Research; a Joint Venture Between the Medical School Hannover (MHH) and the Helmholtz Centre for Infection Research (HZI), Hannover 30625, Germany
| | - Christine Falk
- Institute of Transplant Immunology, Hannover Medical School, Hannover 30625, Germany
| | - Likai Tan
- Institute of Immunology, Hannover Medical School, Hannover 30625, Germany; Institute of Systems Immunology, Hamburg Center for Translational Immunology (HCTI), University Medical Center Hamburg-Eppendorf, Hamburg 20251, Germany
| | - Andreas Trumpp
- Division of Stem Cells and Cancer, German Cancer Research Center (DKFZ) and DKFZ-ZMBH Alliance, Heidelberg 69120, Germany; Heidelberg Institute for Stem Cell Technology and Experimental Medicine (HI-STEM GmbH), Heidelberg 69120, Germany
| | - Immo Prinz
- Institute of Immunology, Hannover Medical School, Hannover 30625, Germany; Institute of Systems Immunology, Hamburg Center for Translational Immunology (HCTI), University Medical Center Hamburg-Eppendorf, Hamburg 20251, Germany.
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4
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Broeren MGA, Wang JJ, Balzaretti G, Groenen PJTA, van Schaik BDC, Chataway T, Kaffa C, Bervoets S, Hebeda KM, Bounova G, Pruijn GJM, Gordon TP, De Vries N, Thurlings RM. Proteogenomic analysis of the autoreactive B cell repertoire in blood and tissues of patients with Sjögren's syndrome. Ann Rheum Dis 2022; 81:644-652. [PMID: 35144926 PMCID: PMC8995816 DOI: 10.1136/annrheumdis-2021-221604] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Accepted: 01/06/2022] [Indexed: 11/30/2022]
Abstract
Objective To comparatively analyse the aberrant affinity maturation of the antinuclear and rheumatoid factor (RF) B cell repertoires in blood and tissues of patients with Sjögren’s syndrome (SjS) using an integrated omics workflow. Methods Peptide sequencing of anti-Ro60, anti-Ro52, anti-La and RF was combined with B cell repertoire analysis at the DNA, RNA and single cell level in blood B cell subsets, affected salivary gland and extranodal marginal zone lymphomas of mucosa-associated lymphoid tissue (MALT) of patients with SjS. Results Affected tissues contained anti-Ro60, anti-Ro52, anti-La and RF clones as a small part of a polyclonal infiltrate. Anti-Ro60, anti-La and anti-Ro52 clones outnumbered RF clones. MALT lymphoma tissues contained monoclonal RF expansions. Autoreactive clones were not selected from a restricted repertoire in a circulating B cell subset. The antinuclear antibody (ANA) repertoires displayed similar antigen-dependent and immunoglobulin (Ig) G1-directed affinity maturation. RF clones displayed antigen-dependent, IgM-directed and more B cell receptor integrity-dependent affinity maturation. This coincided with extensive intra-clonal diversification in RF-derived lymphomas. Regeneration of clinical disease manifestations after rituximab coincided with large RF clones, which not necessarily belonged to the lymphoma clone, that displayed continuous affinity maturation and intra-clonal diversification. Conclusion The ANA and RF repertoires in patients with SjS display tissue-restricted, antigen-dependent and divergent affinity maturation. Affinity maturation of RF clones deviates further during RF clone derived lymphomagenesis and during regeneration of the autoreactive repertoire after temporary disruption by rituximab. These data give insight into the molecular mechanisms of autoreactive inflammation in SjS, assist MALT lymphoma diagnosis and allow tracking its response to rituximab.
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Affiliation(s)
- Mathijs G A Broeren
- Department of Rheumatology, Radboudumc, Nijmegen, The Netherlands.,Department of Biomolecular Chemistry, Institute for Molecules and Materials, Radboud University, Nijmegen, The Netherlands
| | - Jing J Wang
- Department of Immunology, Flinders University, Adelaide, South Australia, Australia
| | - Giulia Balzaretti
- Department of Clinical Immunology and Rheumatology, Amsterdam Rheumatology and Immunology Center, Amsterdam, The Netherlands
| | | | - Barbera D C van Schaik
- Bioinformatics Laboratory, Department of Epidemiology and Data Science, Amsterdam University Medical Centres, Amsterdam, The Netherlands
| | - Tim Chataway
- College of Medicine and Public Health, Flinders University of South Australia, Adelaide, South Australia, Australia
| | - Charlotte Kaffa
- Radboud Technology Center for Bioinformatics, Radboudumc, Nijmegen, The Netherlands
| | - Sander Bervoets
- Radboud Technology Center for Bioinformatics, Radboudumc, Nijmegen, The Netherlands
| | - Konnie M Hebeda
- Department of Pathology, Radboudumc, Nijmegen, The Netherlands
| | | | - Ger J M Pruijn
- Department of Biomolecular Chemistry, Institute for Molecules and Materials, Radboud University, Nijmegen, The Netherlands
| | - Thomas P Gordon
- SA Pathology, Department of Immunology, College of Medicine and Public Health, Flinders University, Bedford Park, South Australia, Australia
| | - Niek De Vries
- Department of Clinical Immunology and Rheumatology, Amsterdam Rheumatology and Immunology Center, Amsterdam, The Netherlands
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5
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Chen BD, Jia XM, Xu JY, Zhao LD, Ji JY, Wu BX, Ma Y, Li H, Zuo XX, Pan WY, Wang XH, Ye S, Tsokos GC, Wang J, Zhang X. An Autoimmunogenic and Proinflammatory Profile Defined by the Gut Microbiota of Patients With Untreated Systemic Lupus Erythematosus. Arthritis Rheumatol 2020; 73:232-243. [PMID: 33124780 DOI: 10.1002/art.41511] [Citation(s) in RCA: 115] [Impact Index Per Article: 28.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 08/09/2020] [Accepted: 08/27/2020] [Indexed: 12/30/2022]
Abstract
OBJECTIVE Changes in gut microbiota have been linked to systemic lupus erythematosus (SLE), but knowledge is limited. Our study aimed to provide an in-depth understanding of the contribution of gut microbiota to the immunopathogenesis of SLE. METHODS Fecal metagenomes from 117 patients with untreated SLE and 52 SLE patients posttreatment were aligned with 115 matched healthy controls and analyzed by whole-genome profiling. For comparison, we assessed the fecal metagenome of MRL/lpr mice. The oral microbiota origin of the gut species that existed in SLE patients was documented by single-nucleotide polymorphism-based strain-level analyses. Functional validation assays were performed to demonstrate the molecular mimicry of newly found microbial peptides. RESULTS Gut microbiota from individuals with SLE displayed significant differences in microbial composition and function compared to healthy controls. Certain species, including the Clostridium species ATCC BAA-442 as well as Atopobium rimae, Shuttleworthia satelles, Actinomyces massiliensis, Bacteroides fragilis, and Clostridium leptum, were enriched in SLE gut microbiota and reduced after treatment. Enhanced lipopolysaccharide biosynthesis aligned with reduced branched chain amino acid biosynthesis was observed in the gut of SLE patients. The findings in mice were consistent with our findings in human subjects. Interestingly, some species with an oral microbiota origin were enriched in the gut of SLE patients. Functional validation assays demonstrated the proinflammatory capacities of some microbial peptides derived from SLE-enriched species. CONCLUSION This study provides detailed information on the microbiota of untreated patients with SLE, including their functional signatures, similarities with murine counterparts, oral origin, and the definition of autoantigen-mimicking peptides. Our data demonstrate that microbiome-altering approaches may offer valuable adjuvant therapies in SLE.
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Affiliation(s)
- Bei-di Chen
- Department of Rheumatology, Clinical Immunology Center, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science, and Peking Union Medical College, Beijing, China
| | - Xin-Miao Jia
- Department of Rheumatology, Clinical Immunology Center, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science, and Peking Union Medical College, Beijing, China
| | - Jia-Yue Xu
- Chinese Academy of Medical Sciences and Peking Union Medical College Hospital, Beijing, China
| | - Li-Dan Zhao
- Department of Rheumatology, Clinical Immunology Center, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science, and Peking Union Medical College, Beijing, China
| | | | - Bing-Xuan Wu
- Department of Rheumatology, Clinical Immunology Center, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science, and Peking Union Medical College, Beijing, China
| | - Yue Ma
- Chinese Academy of Medical Sciences and Peking Union Medical College Hospital, Beijing, China
| | - Hao Li
- Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts
| | - Xiao-Xia Zuo
- Xiangya Hospital and Central South University, Changsha, China
| | - Wen-You Pan
- Huaian First People's Hospital and Nanjing Medical University, Huaian, China
| | | | - Shuang Ye
- Renji Hospital and Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - George C Tsokos
- Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts
| | - Jun Wang
- Chinese Academy of Medical Sciences and Peking Union Medical College Hospital, Beijing, China
| | - Xuan Zhang
- Department of Rheumatology, Clinical Immunology Center, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science, and Peking Union Medical College, Beijing, China
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6
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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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7
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Sharma S, Pettus J, Gottschalk M, Abe B, Gottlieb P, Teyton L. Single-Cell Analysis of CD4 T Cells in Type 1 Diabetes: From Mouse to Man, How to Perform Mechanistic Studies. Diabetes 2019; 68:1886-1891. [PMID: 31540941 PMCID: PMC6754240 DOI: 10.2337/dbi18-0064] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Accepted: 07/21/2019] [Indexed: 01/10/2023]
Abstract
Type 1 diabetes is the prototypical CD4 T cell-mediated autoimmune disease. Its genetic linkage to a single polymorphism at position 57 of the HLA class II DQβ chain makes it unique to study the molecular link between HLA and disease. However, investigating this relationship has been limited by a series of anatomical barriers, the small size and dispersion of the insulin-producing organ, and the scarcity of appropriate techniques and reagents to interrogate antigen-specific CD4 T cells both in man and rodent models. Over the past few years, single-cell technologies, paired with new biostatistical methods, have changed this landscape. Using these tools, we have identified the first molecular link between MHC class II and the onset of type 1 diabetes. The translation of these observations to man is within reach using similar approaches and the lessons learned from rodent models.
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Affiliation(s)
- Siddhartha Sharma
- Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, CA
| | - Jeremy Pettus
- Division of Endocrinology and Metabolism, University of California, San Diego, San Diego, CA
| | | | - Brian Abe
- Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, CA
| | - Peter Gottlieb
- Department of Pediatrics and Department of Immunology & Microbiology, University of Colorado School of Medicine, and Barbara Davis Center for Diabetes, Denver, CO
| | - Luc Teyton
- Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, CA
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8
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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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9
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de la Varga-Martínez R, Rodríguez-Bayona B, Campos-Caro A, Añez GA, Medina-Varo F, Rodríguez C. Autoreactive B-lymphocytes in SLE and RA patients: Isolation and characterisation using extractable nuclear and citrullinated antigens bound to immunobeads. Eur J Immunol 2019; 49:1107-1116. [PMID: 30893475 DOI: 10.1002/eji.201848065] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 02/11/2019] [Accepted: 03/18/2019] [Indexed: 01/23/2023]
Abstract
Systemic lupus erythematosus and rheumatoid arthritis are autoimmune diseases characterised by B-cell hyperactivation and production of autoantibodies (AutoAbs) against various self-antigens, including extractable nuclear antigens and citrullinated peptides. Therefore, B lymphocytes and antibody-secreting cells are considered relevant targets for therapies. However, isolation and characterisation of auto-reactive specific B lymphocytes are limited, primarily due to technical issues. In this work, we purified extractable nuclear antigen-specific and citrullinated peptide-specific auto-reactive B lymphocytes by magnetic selection with ENA- and citrullinated peptide-bound immunobeads. We obtained blood auto-reactive B lymphocytes from most patients. Their nature was primarily naïve B cells, some of them in an active status, with low levels of somatic hypermutations in the immunoglobulin heavy-chain variable regions. Their presence correlated with serum levels of autoAb. Auto-reactive B lymphocytes were able to differentiate into auto-reactive antibody-secreting cells under conditions of stimulation. In addition, based on the presence of circulating auto-reactive B cells and/or antibody-secreting cells, four different profiles were described in lupus patients. Thus, tracking auto-reactive B cells and/or antibody-secreting cells in patient blood could represent a biomarker for deciding whether to use therapies blocking either B cells, plasma cells or both, as well as a new tool for monitoring minimal residual autoimmune disease in patients.
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Affiliation(s)
- Raquel de la Varga-Martínez
- Servicio de Inmunología, UGC de Hematología, Inmunología y Genética, Hospital Universitario Puerta del Mar (HUPM), Cádiz, Spain.,Unidad de Investigación, HUPM, Cádiz, Spain
| | | | - Antonio Campos-Caro
- Unidad de Investigación, HUPM, Cádiz, Spain.,Instituto de Investigación e Innovación Biomédica de Cádiz (INiBICA)
| | - Gustavo A Añez
- Servicio de Reumatología, Hospital Universitario Vall d'Hebron, Barcelona, Spain
| | - Fermín Medina-Varo
- Instituto de Investigación e Innovación Biomédica de Cádiz (INiBICA).,Sección de Reumatología, UGC de Cirugía Ortopédica, Traumatología y Reumatología, HUPM, Cádiz, Spain
| | - Carmen Rodríguez
- Servicio de Inmunología, UGC de Hematología, Inmunología y Genética, Hospital Universitario Puerta del Mar (HUPM), Cádiz, Spain.,Instituto de Investigación e Innovación Biomédica de Cádiz (INiBICA)
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10
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Coelho CH, Gazzinelli-Guimaraes PH, Howard J, Barnafo E, Alani NAH, Muratova O, McCormack A, Kelnhofer E, Urban JF, Narum DL, Anderson C, Langhorne J, Nutman TB, Duffy PE. Chronic helminth infection does not impair immune response to malaria transmission blocking vaccine Pfs230D1-EPA/Alhydrogel® in mice. Vaccine 2019; 37:1038-1045. [PMID: 30685251 PMCID: PMC6382667 DOI: 10.1016/j.vaccine.2019.01.027] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Revised: 01/08/2019] [Accepted: 01/09/2019] [Indexed: 12/20/2022]
Abstract
Pfs230 is a candidate malaria transmission blocking vaccine against P. falciparum. Pfs230 vaccine is being tested in areas where malaria and helminth infections are co-endemic. Chronic helminth infection induces a marked increase in systemic Th2 and regulatory cytokine levels in mice. Chronic H. polygyrus bakeri infection does not alter Pfs230 vaccine specific-antibody levels. Functional activity of Pfs230 vaccine was not impaired by chronic helminth infection in mice.
Introduction Malaria transmission blocking vaccines (TBV) are innovative approaches that aim to induce immunity in humans against Plasmodium during mosquito stage, neutralizing the capacity of the infected vectors to transmit malaria. Pfs230D1-EPA/Alhydrogel®, a promising protein-protein conjugate malaria TBV, is currently being tested in human clinical trials in areas where P. falciparum malaria is coendemic with helminth parasites. Helminths are complex metazoans that share the master capacity to downregulate the host immune response towards themselves and also to bystander antigens, including vaccines. However, it is not known whether the activity of a protein-based malaria TBV may be affected by a chronic helminth infection. Methods Using an experimental murine model for a chronic helminth infection (Heligmosomoides polygyrus bakeri - Hpb), we evaluated whether prior infection alters the activity of Pfs230D1-EPA/Alhydrogel® TBV in mice. Results After establishment of a chronic infection, characterized by a marked increase of parasite antigen-specific IgG1, IgA and IgE antibody responses, concomitant with an increase of systemic IL-10, IL-5 and IL-6 levels, the Hpb-infected mice were immunized with Pfs230D1-EPA/Alhydrogel® and the vaccine-specific immune response was compared with that in non-infected immunized mice. TBV immunizations induced an elevated vaccine specific-antibody response, however Pfs230D1 specific-IgG levels were similar between infected and uninfected mice at days 15, 25 and 35 post-vaccination. Absolute numbers of Pfs230D1-activated B cells generated in response to the vaccine were also similar among the vaccinated groups. Finally, vaccine activity assessed by reduction of oocyst number in P. falciparum infected mosquitoes was similar between Hpb-infected and immunized mice with non-infected immunized mice. Conclusion Pfs230D1-EPA/Alhydrogel® efficacy is not impaired by a chronic helminth infection in mice.
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Affiliation(s)
- Camila H Coelho
- Laboratory of Malaria Immunology and Vaccinology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, USA
| | | | - Jennifer Howard
- Laboratory of Malaria Immunology and Vaccinology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, USA
| | - Emma Barnafo
- Laboratory of Malaria Immunology and Vaccinology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, USA
| | - Nada A H Alani
- Laboratory of Malaria Immunology and Vaccinology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, USA
| | - Olga Muratova
- Laboratory of Malaria Immunology and Vaccinology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, USA
| | - Ashley McCormack
- Laboratory of Malaria Immunology and Vaccinology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, USA
| | - Emily Kelnhofer
- Laboratory of Malaria Immunology and Vaccinology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, USA
| | - Joseph F Urban
- US Department of Agriculture, Agricultural Research Service, Beltsville Human Nutrition Research Center, Diet, Genomic and Immunology Laboratory, Beltsville, MD, USA
| | - David L Narum
- Laboratory of Malaria Immunology and Vaccinology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, USA
| | - Charles Anderson
- Laboratory of Malaria Immunology and Vaccinology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, USA
| | | | - Thomas B Nutman
- Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Patrick E Duffy
- Laboratory of Malaria Immunology and Vaccinology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, USA.
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11
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Titcombe PJ, Wigerblad G, Sippl N, Zhang N, Shmagel AK, Sahlström P, Zhang Y, Barsness LO, Ghodke-Puranik Y, Baharpoor A, Hansson M, Israelsson L, Skriner K, Niewold TB, Klareskog L, Svensson CI, Amara K, Malmström V, Mueller DL. Pathogenic Citrulline-Multispecific B Cell Receptor Clades in Rheumatoid Arthritis. Arthritis Rheumatol 2018; 70:1933-1945. [PMID: 29927106 DOI: 10.1002/art.40590] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2018] [Accepted: 06/19/2018] [Indexed: 12/20/2022]
Abstract
OBJECTIVE Anti-citrullinated protein antibodies (ACPAs) have proven highly useful as biomarkers for rheumatoid arthritis (RA). However, composition and functionality of the associated autoreactive B cell repertoire have not been directly assessed. We aimed to selectively investigate citrullinated autoantigen-specific B cell receptors (BCRs) involved in RA and initiate studies on their pathogenicity. METHODS Blood samples were obtained from patients in a University of Minnesota cohort with ACPA-positive RA (n = 89). Tetramer sets bearing citrullinated filaggrin peptide cfc1 or citrullinated α-enolase peptide were constructed to specifically capture autoreactive B cells from the unaltered, polyclonal repertoire in RA patients. Citrullinated peptide tetramer-bound B cells were subjected to flow cytometric cell sorting and single-cell IGH, IGK, and IGL gene sequencing for B cell lineage determinations. BCR gene sequences were also expressed as recombinant monoclonal antibodies (mAb) for direct evaluation of citrullinated autoantigen binding and effector functionality. RESULTS Using citrullinated peptide tetramer enrichment to investigate single autoreactive blood B cells, we identified biased V-region gene usage and conserved junction arrangements in BCRs from RA patients. Parsimonious clustering of related immunoglobulin gene nucleotide sequences revealed clonal expansions of rare individual B cell clades, in parallel with divergent sequence mutations. Correspondingly, recombinant mAb generated from such BCR lineages demonstrated citrulline-dependent cross-reactivity extending beyond the citrullinated peptides used for B cell capture. A pair of citrullinated autoantigen-specific mAb with cross-reactive binding profiles also promoted arthritis in mice. CONCLUSION Our findings suggest that broad ACPA specificities in RA arise from a restricted repertoire of evolving citrulline-multispecific B cell clades with pathogenic potential.
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Affiliation(s)
- Philip J Titcombe
- University of Minnesota Medical School, Minneapolis, and Karolinska Institutet, Stockholm, Sweden
| | | | | | - Na Zhang
- University of Minnesota Medical School, Minneapolis
| | | | - Peter Sahlström
- Karolinska Institutet, Stockholm, Sweden, and Charité Universitätsmedizin, Berlin, Germany
| | - Yue Zhang
- University of Minnesota Medical School, Minneapolis
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12
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Edmiston E, Jones KL, Vu T, Ashwood P, Van de Water J. Identification of the antigenic epitopes of maternal autoantibodies in autism spectrum disorders. Brain Behav Immun 2018; 69:399-407. [PMID: 29289663 PMCID: PMC5857423 DOI: 10.1016/j.bbi.2017.12.014] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/10/2017] [Revised: 12/07/2017] [Accepted: 12/27/2017] [Indexed: 10/18/2022] Open
Abstract
Several groups have described the presence of fetal brain-reactive maternal autoantibodies in the plasma of some mothers whose children have autism spectrum disorder (ASD). We previously identified seven autoantigens targeted by these maternal autoantibodies, each of which is expressed at significant levels in the developing brain and has demonstrated roles in typical neurodevelopment. To further understand the binding repertoire of the maternal autoantibodies, as well as the presence of any meaningful differences with respect to the recognition and binding of these ASD-specific autoantibodies to each of these neuronal autoantigens, we utilized overlapping peptide microarrays incubated with maternal plasma samples obtained from the Childhood Autism Risk from Genetics and Environment (CHARGE) Study. In an effort to identify the most commonly recognized (immunodominant) epitope sequences targeted by maternal autoantibodies for each of the seven ASD-specific autoantigens, arrays were screened with plasma from mothers with children across diagnostic groups (ASD and typically developing (TD)) that were positive for at least one antigen by western blot (N = 67) or negative control mothers unreactive to any of the autoantigens (N = 18). Of the 63 peptides identified with the discovery microarrays, at least one immunodominant peptide was successfully identified for each of the seven antigenic proteins using subsequent selective screening microarrays. Furthermore, while limited by our relatively small sample size, there were peptides that were distinctly recognized by autoantibodies relative to diagnosis For example, reactivity was observed exclusively in mothers of children of ASD towards several peptides, including the LDH-B peptides DCIIIVVSNPVDILT (9.1% ASD vs. 0% TD; odds ratio (95% CI) = 6.644 (0.355-124.384)) and PVAEEEATVPNNKIT (5.5% ASD vs. 0% TD; odds ratio (95% CI) = 4.067 (0.203-81.403)).These results suggest that there are differences in the binding repertoire between the antigen positive ASD and TD maternal samples. Further, the autoantibodies in plasma from mothers of children with ASD bound to a more diverse set of peptides, and there were specific peptide binding combinations observed only in this group. Future studies are underway to determine the critical amino acids necessary for autoantibody binding, which will be essential in developing a potential therapeutic strategy for maternal autoantibody related (MAR) ASD.
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Affiliation(s)
- Elizabeth Edmiston
- Department of Internal Medicine, Division of Rheumatology, Allergy and Clinical Immunology, One Shields Avenue, University of California, Davis, CA 95616, USA; UC Davis MIND Institute, 2825 50th St, Sacramento, CA 95817, USA.
| | - Karen L Jones
- Department of Internal Medicine, Division of Rheumatology, Allergy and Clinical Immunology, One Shields Avenue, University of California, Davis, CA 95616, USA; UC Davis MIND Institute, 2825 50th St, Sacramento, CA 95817, USA.
| | - Tam Vu
- Department of Internal Medicine, Division of Rheumatology, Allergy and Clinical Immunology, One Shields Avenue, University of California, Davis, CA 95616, USA.
| | - Paul Ashwood
- Department of Internal Medicine, Division of Rheumatology, Allergy and Clinical Immunology, One Shields Avenue, University of California, Davis, CA 95616, USA; Department of Medical Microbiology and Immunology, One Shields Avenue, University of California, Davis, CA 95616, USA.
| | - Judy Van de Water
- Department of Internal Medicine, Division of Rheumatology, Allergy and Clinical Immunology, One Shields Avenue, University of California, Davis, CA 95616, USA; UC Davis MIND Institute, 2825 50th St, Sacramento, CA 95817, USA.
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13
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Devilder MC, Moyon M, Saulquin X, Gautreau-Rolland L. Generation of Discriminative Human Monoclonal Antibodies from Rare Antigen-specific B Cells Circulating in Blood. J Vis Exp 2018:56508. [PMID: 29443062 PMCID: PMC5912359 DOI: 10.3791/56508] [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] [Indexed: 12/31/2022] Open
Abstract
Monoclonal antibodies (mAbs) are powerful tools useful for both fundamental research and in biomedicine. Their high specificity is indispensable when the antibody needs to distinguish between highly related structures (e.g., a normal protein and a mutated version thereof). The current way of generating such discriminative mAbs involves extensive screening of multiple Ab-producing B cells, which is both costly and time consuming. We propose here a rapid and cost-effective method for the generation of discriminative, fully human mAbs starting from human blood circulating B lymphocytes. The originality of this strategy is due to the selection of specific antigen binding B cells combined with the counter-selection of all other cells, using readily available Peripheral Blood Mononuclear Cells (PBMC). Once specific B cells are isolated, cDNA (complementary deoxyribonucleic acid) sequences coding for the corresponding mAb are obtained using single cell Reverse Transcription-Polymerase Chain Reaction (RT-PCR) technology and subsequently expressed in human cells. Within as little as 1 month, it is possible to produce milligrams of highly discriminative human mAbs directed against virtually any desired antigen naturally detected by the B cell repertoire.
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Affiliation(s)
- Marie-Claire Devilder
- Centre Régional de Recherche en Cancérologie et Immunologie Nantes/Angers, INSERM 1232, LabEx IGO, Université de Nantes; CHU Nantes
| | - Mélinda Moyon
- Centre Régional de Recherche en Cancérologie et Immunologie Nantes/Angers, INSERM 1232, LabEx IGO, Université de Nantes; CHU Nantes
| | - Xavier Saulquin
- Centre Régional de Recherche en Cancérologie et Immunologie Nantes/Angers, INSERM 1232, LabEx IGO, Université de Nantes;
| | - Laetitia Gautreau-Rolland
- Centre Régional de Recherche en Cancérologie et Immunologie Nantes/Angers, INSERM 1232, LabEx IGO, Université de Nantes;
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14
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Evolving Approaches in the Identification of Allograft-Reactive T and B Cells in Mice and Humans. Transplantation 2017; 101:2671-2681. [PMID: 28604446 DOI: 10.1097/tp.0000000000001847] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Whether a transplanted allograft is stably accepted, rejected, or achieves immunological tolerance is dependent on the frequency and function of alloreactive lymphocytes, making the identification and analysis of alloreactive T and B cells in transplant recipients critical for understanding mechanisms, and the prediction of allograft outcome. In animal models, tracking the fate of graft-reactive T and B cells allows investigators to uncover their biology and develop new therapeutic strategies to protect the graft. In the clinic, identification and quantification of graft-reactive T and B cells allows for the early diagnosis of immune reactivity and therapeutic intervention to prevent graft loss. In addition to rejection, probing of T and B cell fate in vivo provides insights into the underlying mechanisms of alloimmunity or tolerance that may lead to biomarkers predicting graft fate. In this review, we discuss existing and developing approaches to track and analyze alloreactive T and B cells in mice and humans and provide examples of discoveries made utilizing these techniques. These approaches include mixed lymphocyte reactions, trans-vivo delayed-type hypersensitivity, enzyme-linked immunospot assays, the use of antigen receptor transgenic lymphocytes, and utilization of peptide-major histocompatibility multimers, along with imaging techniques for static multiparameter analysis or dynamic in vivo tracking. Such approaches have already refined our understanding of the alloimmune response and are pointing to new ways to improve allograft outcomes in the clinic.
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15
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Identification and phenotyping of circulating autoreactive proteinase 3-specific B cells in patients with PR3-ANCA associated vasculitis and healthy controls. J Autoimmun 2017; 84:122-131. [DOI: 10.1016/j.jaut.2017.08.006] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Revised: 08/17/2017] [Accepted: 08/21/2017] [Indexed: 11/23/2022]
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16
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Hamilton JA, Wu Q, Yang P, Luo B, Liu S, Hong H, Li J, Walter MR, Fish EN, Hsu HC, Mountz JD. Cutting Edge: Endogenous IFN-β Regulates Survival and Development of Transitional B Cells. THE JOURNAL OF IMMUNOLOGY 2017; 199:2618-2623. [PMID: 28904124 DOI: 10.4049/jimmunol.1700888] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Accepted: 08/21/2017] [Indexed: 12/20/2022]
Abstract
The transitional stage of B cell development is a formative stage in the spleen where autoreactive specificities are censored as B cells gain immune competence, but the intrinsic and extrinsic factors regulating survival of transitional stage 1 (T1) B cells are unknown. We report that B cell expression of IFN-β is required for optimal survival and TLR7 responses of transitional B cells in the spleen and was overexpressed in T1 B cells from BXD2 lupus-prone mice. Single-cell gene expression analysis of B6 Ifnb+/+ versus B6 Ifnb-⁄- T1 B cells revealed heterogeneous expression of Ifnb in wild-type B cells and distinct gene expression patterns associated with endogenous IFN-β. Single-cell analysis of BXD2 T1 B cells revealed that Ifnb is expressed in early T1 B cell development with subsequent upregulation of Tlr7 and Ifna1 Together, these data suggest that T1 B cell expression of IFN-β plays a key role in regulating responsiveness to external factors.
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Affiliation(s)
- Jennie A Hamilton
- Division of Clinical Immunology and Rheumatology, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL 35294
| | - Qi Wu
- Division of Clinical Immunology and Rheumatology, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL 35294
| | - PingAr Yang
- Division of Clinical Immunology and Rheumatology, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL 35294
| | - Bao Luo
- Division of Clinical Immunology and Rheumatology, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL 35294
| | - Shanrun Liu
- Division of Clinical Immunology and Rheumatology, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL 35294
| | - Huixian Hong
- Division of Clinical Immunology and Rheumatology, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL 35294
| | - Jun Li
- Division of Clinical Immunology and Rheumatology, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL 35294
| | - Mark R Walter
- Department of Microbiology, University of Alabama at Birmingham, Birmingham, AL 35294
| | - Eleanor N Fish
- Toronto General Research Institute, University Health Network, Toronto, Ontario M5G 2C4, Canada.,Department of Immunology, University of Toronto, Toronto, Ontario M5G 2M1, Canada; and
| | - Hui-Chen Hsu
- Division of Clinical Immunology and Rheumatology, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL 35294
| | - John D Mountz
- Division of Clinical Immunology and Rheumatology, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL 35294; .,Birmingham Veterans Administration Medical Center, Birmingham, AL 35233
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17
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Rahe MC, Gustafson KL, Murtaugh MP. B Cell Tetramer Development for Veterinary Vaccinology. Viral Immunol 2017; 31:1-10. [PMID: 28759334 DOI: 10.1089/vim.2017.0073] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Immunological memory is elicited after either vaccination or natural exposure to a pathogen and is essential for protection against re-exposure. Despite its critical importance, the ability to interrogate the veterinary animal memory immune response has long been hindered by a paucity of tools to assess immunological memory. As a result, the evaluation and analysis of protective immune responses that predict immune protection in food and fiber animals and facilitate vaccine development are obstructed. To fill this gap in knowledge in swine, we created a B cell tetramer to porcine reproductive and respiratory syndrome virus (PRRSV) nonstructural protein 7 (nsp7) to efficiently and effectively investigate the memory B cell response, a hallmark of anti-viral immunity. This novel reagent was validated by using a modified capture ELISA, tetramer pulldowns, and flow cytometry, and it was shown to detect rare, antigen-specific B cells that were present at a frequency of about 0.001% of total B lymphocytes in immune animals. The nsp7-B cell tetramer will help to characterize the PRRSV-specific memory B cell response, which is fundamentally important for understanding immunological competence and animal variation in resistance to PRRSV infection. We expect that the method will be widely applicable to the exploration of immunity to veterinary pathogens.
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Affiliation(s)
- Michael C Rahe
- Department of Veterinary and Biomedical Sciences, University of Minnesota , St. Paul, Minnesota
| | - Kevin L Gustafson
- Department of Veterinary and Biomedical Sciences, University of Minnesota , St. Paul, Minnesota
| | - Michael P Murtaugh
- Department of Veterinary and Biomedical Sciences, University of Minnesota , St. Paul, Minnesota
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18
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Identification of autoreactive B cells with labeled nucleosomes. Sci Rep 2017; 7:602. [PMID: 28377609 PMCID: PMC5428865 DOI: 10.1038/s41598-017-00664-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Accepted: 02/28/2017] [Indexed: 12/15/2022] Open
Abstract
The pathogenesis of autoimmune diseases has not been completely elucidated yet, and only a few specific treatments have been developed so far. In autoimmune diseases mediated by pathogenic autoantibodies, such as systemic lupus erythematosus, the specific detection and analysis of autoreactive B cells is crucial for a better understanding of the physiopathology. Biological characterization of these cells may help to define new therapeutic targets. Very few techniques allowing the precise detection of autoreactive B cells have been described so far. Herein we propose a new flow cytometry technique for specific detection of anti-nucleosome B cells, which secrete autoantibodies in systemic lupus erythematosus, using labeled nucleosomes. We produced different fluorochrome-labeled nucleosomes, characterized them, and finally tested them in flow cytometry. Nucleosomes labeled via the cysteines present in H3 histone specifically bind to autoreactive B cells in the anti-DNA transgenic B6.56R mice model. The present work validates the use of fluorochrome-labeled nucleosomes via cysteines to identify anti-nucleosome B cells and offers new opportunities for the description of autoreactive B cell phenotype.
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19
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Ouisse LH, Gautreau-Rolland L, Devilder MC, Osborn M, Moyon M, Visentin J, Halary F, Bruggemann M, Buelow R, Anegon I, Saulquin X. Antigen-specific single B cell sorting and expression-cloning from immunoglobulin humanized rats: a rapid and versatile method for the generation of high affinity and discriminative human monoclonal antibodies. BMC Biotechnol 2017; 17:3. [PMID: 28081707 PMCID: PMC5234254 DOI: 10.1186/s12896-016-0322-5] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Accepted: 12/07/2016] [Indexed: 01/03/2023] Open
Abstract
Background There is an ever-increasing need of monoclonal antibodies (mAbs) for biomedical applications and fully human binders are particularly desirable due to their reduced immunogenicity in patients. We have applied a strategy for the isolation of antigen-specific B cells using tetramerized proteins and single-cell sorting followed by reconstruction of human mAbs by RT-PCR and expression cloning. Results This strategy, using human peripheral blood B cells, enabled the production of low affinity human mAbs against major histocompatibility complex molecules loaded with peptides (pMHC). We then implemented this technology using human immunoglobulin transgenic rats, which after immunization with an antigen of interest express high affinity-matured antibodies with human idiotypes. Using rapid immunization, followed by tetramer-based B-cell sorting and expression cloning, we generated several fully humanized mAbs with strong affinities, which could discriminate between highly homologous proteins (eg. different pMHC complexes). Conclusions Therefore, we describe a versatile and more effective approach as compared to hybridoma generation or phage or yeast display technologies for the generation of highly specific and discriminative fully human mAbs that could be useful both for basic research and immunotherapeutic purposes. Electronic supplementary material The online version of this article (doi:10.1186/s12896-016-0322-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Laure-Hélène Ouisse
- INSERM Center for Research in Transplantation and Immunology (CRTI) U1064; Université de Nantes; Centre Hospitalier Universitaire de Nantes Institut de Transplantation Urologie Néphrologie (ITUN), Nantes, F44000, France.,Transgenesis Rat ImmunoPhenomic Platform Structure Fédérative de Recherche François Bonamy Centre National de Recherche Scientifique UMS3556, Nantes, F44093, France
| | - Laetitia Gautreau-Rolland
- CRCNA UMR S892 INSERM 6299 CNRS Université de Nantes; Université de Nantes Faculté des Sciences et Techniques, Nantes, F44093, France
| | - Marie-Claire Devilder
- CRCNA UMR S892 INSERM 6299 CNRS Université de Nantes; Centre Hospitalier Universitaire de Nantes, Nantes, F44093, France
| | - Michael Osborn
- Recombinant Antibody Technology Babraham Research Campus, Cambridge, CB22 3AT, UK
| | - Melinda Moyon
- CRCNA UMR S892 INSERM 6299 CNRS Université de Nantes; Centre Hospitalier Universitaire de Nantes, Nantes, F44093, France
| | - Jonathan Visentin
- Centre Hospitalier Universitaire de Bordeaux Laboratoire d'Immunologie et Immunogénétique Hôpital Pellegrin Bordeaux, Bordeaux, F33076, France.,Université de Bordeaux UMR CNRS 5164 , Talence, F33400, France
| | - Frank Halary
- INSERM Center for Research in Transplantation and Immunology (CRTI) U1064; Université de Nantes; Centre Hospitalier Universitaire de Nantes Institut de Transplantation Urologie Néphrologie (ITUN), Nantes, F44000, France
| | - Marianne Bruggemann
- Recombinant Antibody Technology Babraham Research Campus, Cambridge, CB22 3AT, UK
| | | | - Ignacio Anegon
- INSERM Center for Research in Transplantation and Immunology (CRTI) U1064; Université de Nantes; Centre Hospitalier Universitaire de Nantes Institut de Transplantation Urologie Néphrologie (ITUN), Nantes, F44000, France. .,Transgenesis Rat ImmunoPhenomic Platform Structure Fédérative de Recherche François Bonamy Centre National de Recherche Scientifique UMS3556, Nantes, F44093, France.
| | - Xavier Saulquin
- CRCNA UMR S892 INSERM 6299 CNRS Université de Nantes; Université de Nantes Faculté des Sciences et Techniques, Nantes, F44093, France.
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20
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Lauder SN, Tyrrell VJ, Allen-Redpath K, Aldrovandi M, Gray D, Collins P, Jones SA, Taylor PR, O'Donnell V. Myeloid 12/15-LOX regulates B cell numbers and innate immune antibody levels in vivo. Wellcome Open Res 2017; 2:1. [PMID: 28239665 PMCID: PMC5321417 DOI: 10.12688/wellcomeopenres.10308.1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Background. The myeloid enzyme 12/15-lipoxygenase (LOX), which generates bioactive oxidized lipids, has been implicated in numerous inflammatory diseases, with several studies demonstrating an improvement in pathology in mice lacking the enzyme. However, the ability of 12/15-LOX to directly regulate B cell function has not been studied. Methods. The influence of 12/15-LOX on B cell phenotype and function, and IgM generation, was compared using wildtype (WT) and 12/15-LOX (
Alox15-/-) deficient mice. The proliferative and functional capacity of splenic CD19
+ B cells was measured
in vitro in response to various toll-like receptor agonists. Results. WT and
Alox15-/- displayed comparable responses. However
in vivo, splenic B cell numbers were significantly elevated in
Alox15-/- mice with a corresponding elevation in titres of total IgM in lung, gut and serum, and lower serum IgM directed against the 12/15-LOX product, 12-hydroxyeicosatetraenoic acid-phosphatidylethanolamine (HETE-PE). Discussion. Myeloid 12/15-LOX can regulate B cell numbers and innate immune antibody levels
in vivo, potentially contributing to its ability to regulate inflammatory disease. Furthermore, the alterations seen in 12/15-LOX deficiency likely result from changes in the equilibrium of the immune system that develop from birth. Further studies in disease models are warranted to elucidate the contribution of 12/15-LOX mediated alterations in B cell numbers and innate immune antibody generation to driving inflammation
in vivo.
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Affiliation(s)
- Sarah N Lauder
- Systems Immunity Research Institute, Cardiff University, Cardiff, UK.,Institute of Infection & Immunity, Cardiff University, Cardiff, UK
| | - Victoria J Tyrrell
- Systems Immunity Research Institute, Cardiff University, Cardiff, UK.,Institute of Infection & Immunity, Cardiff University, Cardiff, UK
| | - Keith Allen-Redpath
- Systems Immunity Research Institute, Cardiff University, Cardiff, UK.,Institute of Infection & Immunity, Cardiff University, Cardiff, UK
| | - Maceler Aldrovandi
- Systems Immunity Research Institute, Cardiff University, Cardiff, UK.,Institute of Infection & Immunity, Cardiff University, Cardiff, UK
| | - David Gray
- Institute of Immunology and Infection Research, University of Edinburgh, Edinburgh, UK
| | - Peter Collins
- Systems Immunity Research Institute, Cardiff University, Cardiff, UK.,Institute of Infection & Immunity, Cardiff University, Cardiff, UK
| | - Simon A Jones
- Systems Immunity Research Institute, Cardiff University, Cardiff, UK.,Institute of Infection & Immunity, Cardiff University, Cardiff, UK
| | - Philip R Taylor
- Systems Immunity Research Institute, Cardiff University, Cardiff, UK.,Institute of Infection & Immunity, Cardiff University, Cardiff, UK
| | - Valerie O'Donnell
- Systems Immunity Research Institute, Cardiff University, Cardiff, UK.,Institute of Infection & Immunity, Cardiff University, Cardiff, UK
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Joshua V, Schobers L, Titcombe PJ, Israelsson L, Rönnelid J, Hansson M, Catrina AI, Pruijn GJM, Malmström V. Antibody responses to de novo identified citrullinated fibrinogen peptides in rheumatoid arthritis and visualization of the corresponding B cells. Arthritis Res Ther 2016; 18:284. [PMID: 27906052 PMCID: PMC5133744 DOI: 10.1186/s13075-016-1181-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2016] [Accepted: 11/11/2016] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Antibodies against citrullinated proteins (ACPA) are common in patients with rheumatoid arthritis (RA). ACPA can appear before disease onset and target many self-antigens. Citrullinated fibrin/fibrinogen represents a classical ACPA target antigen, and mass spectrometry of RA synovial fluid reveals elevated citrullinated (cit) fibrinogen (Fib) peptides compared to non-RA controls. We investigated the extent to which these less-studied peptides represent autoantibody targets and sought to visualize the corresponding cit-Fib-reactive B cells in RA patients. METHODS An in-house ELISA was established against four cit-Fib α-subunit peptides (cit-Fib α-35; cit-Fib α-216,218; cit-Fib α-263,271 and cit-Fib α-425,426) and serum from patients with established RA (n = 347) and disease controls with psoriatic arthritis (PsA) or ankylosing spondylitis (AS) (n = 236) were analyzed. RA patients were genotyped for HLA-DR alleles, PTPN22 R620W and screened for anti-CCP2 and cit-Fib protein antibodies. The cit-Fib peptides were also used to assemble antigen tetramers to identify cit-Fib-reactive B cells in peripheral blood by flow cytometry. RESULTS The frequencies of autoantibodies against different cit-Fib epitopes in RA patients compared to PsA/AS patients were: cit-Fib α-35 (RA 20%, vs PsA/AS 1%); cit-Fib α-216,218 (13% vs 0.5%); cit-Fib α-263,271 (21% vs 0.5%) and cit-Fib α-425,426 (17% vs 1%). The presence of autoantibodies against these peptides was associated with presence of anti-CCP2 and anti-cit-Fib protein antibodies. No association was found between HLA-DR shared epitope and antibodies to the different cit-Fib peptides. However, association was observed between the PTPN22 risk allele and positivity to cit-Fib α-35 and cit-Fib α-263,271. B cells carrying surface Ig reactive to these cit-Fib peptides were found in RA peripheral blood and these tend to be more common in PTPN22 risk allele carriers. CONCLUSIONS Our data show that several cit-Fib peptides are targeted by autoantibodies in RA, but not in PsA/AS, implicating that these are not due to arthritis but more specific for RA etiology. The RA-associated anti-cit protein response is broad with many parallel immune responses. The association between cit-Fib autoantibodies and the PTPN22 R620W risk allele supports the hypothesis of altered B cell regulation, such as autoreactive B cells evading tolerance checkpoints.
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Affiliation(s)
- Vijay Joshua
- Rheumatology Unit, Department of Medicine, Karolinska Institute, Karolinska University Hospital Solna, 17176, Stockholm, Sweden
| | - Loes Schobers
- Department of Biomolecular Chemistry, Radboud Institute for Molecular Life Sciences and Institute for Molecules and Materials, Radboud University, Nijmegen, Netherlands
| | - Philip J Titcombe
- Rheumatology Unit, Department of Medicine, Karolinska Institute, Karolinska University Hospital Solna, 17176, Stockholm, Sweden
| | - Lena Israelsson
- Rheumatology Unit, Department of Medicine, Karolinska Institute, Karolinska University Hospital Solna, 17176, Stockholm, Sweden
| | - Johan Rönnelid
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | - Monika Hansson
- Rheumatology Unit, Department of Medicine, Karolinska Institute, Karolinska University Hospital Solna, 17176, Stockholm, Sweden
| | - Anca I Catrina
- Rheumatology Unit, Department of Medicine, Karolinska Institute, Karolinska University Hospital Solna, 17176, Stockholm, Sweden
| | - Ger J M Pruijn
- Department of Biomolecular Chemistry, Radboud Institute for Molecular Life Sciences and Institute for Molecules and Materials, Radboud University, Nijmegen, Netherlands
| | - Vivianne Malmström
- Rheumatology Unit, Department of Medicine, Karolinska Institute, Karolinska University Hospital Solna, 17176, Stockholm, Sweden.
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