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Hardt U, Corcoran MM, Narang S, Malmström V, Padyukov L, Karlsson Hedestam GB. Analysis of IGH allele content in a sample group of rheumatoid arthritis patients demonstrates unrevealed population heterogeneity. Front Immunol 2023; 14:1073414. [PMID: 36798124 PMCID: PMC9927645 DOI: 10.3389/fimmu.2023.1073414] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Accepted: 01/09/2023] [Indexed: 02/04/2023] Open
Abstract
Immunoglobulin heavy chain (IGH) germline gene variations influence the B cell receptor repertoire, with resulting biological consequences such as shaping our response to infections and altering disease susceptibilities. However, the lack of information on polymorphism frequencies in the IGH loci at the population level makes association studies challenging. Here, we genotyped a pilot group of 30 individuals with rheumatoid arthritis (RA) to examine IGH allele content and frequencies in this group. Eight novel IGHV alleles and one novel IGHJ allele were identified in the study. 15 cases were haplotypable using heterozygous IGHJ6 or IGHD anchors. One variant, IGHV4-34*01_S0742, was found in three out of 30 cases and included a single nucleotide change resulting in a non-canonical recombination signal sequence (RSS) heptamer. This variant allele, shown by haplotype analysis to be non-expressed, was also found in three out of 30 healthy controls and matched a single nucleotide polymorphism (SNP) described in the 1000 Genomes Project (1KGP) collection with frequencies that varied between population groups. Our finding of previously unreported alleles in a relatively small group of individuals with RA illustrates the need for baseline information about IG allelic frequencies in targeted study groups in preparation for future analysis of these genes in disease association studies.
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Affiliation(s)
- Uta Hardt
- Division of Rheumatology, Department of Medicine Solna, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden and Karolinska University Hospital, Stockholm, Sweden.,Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden
| | - Martin M Corcoran
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden
| | - Sanjana Narang
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden
| | - Vivianne Malmström
- Division of Rheumatology, Department of Medicine Solna, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden and Karolinska University Hospital, Stockholm, Sweden
| | - Leonid Padyukov
- Division of Rheumatology, Department of Medicine Solna, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden and Karolinska University Hospital, Stockholm, Sweden
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2
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Schickel JN, Glauzy S, Ng YS, Chamberlain N, Massad C, Isnardi I, Katz N, Uzel G, Holland SM, Picard C, Puel A, Casanova JL, Meffre E. Self-reactive VH4-34-expressing IgG B cells recognize commensal bacteria. J Exp Med 2017; 214:1991-2003. [PMID: 28500047 PMCID: PMC5502416 DOI: 10.1084/jem.20160201] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Revised: 11/08/2016] [Accepted: 04/10/2017] [Indexed: 12/14/2022] Open
Abstract
The human VH4-34 gene segment encodes intrinsically self-reactive antibodies that recognize I/i carbohydrates. Schickel et al. show that these self-reactive clones may represent an innate-like B cell population specialized in the containment of commensal bacteria when gut barriers are breached. The germline immunoglobulin (Ig) variable heavy chain 4–34 (VH4-34) gene segment encodes in humans intrinsically self-reactive antibodies that recognize I/i carbohydrates expressed by erythrocytes with a specific motif in their framework region 1 (FWR1). VH4-34–expressing clones are common in the naive B cell repertoire but are rarely found in IgG memory B cells from healthy individuals. In contrast, CD27+IgG+ B cells from patients genetically deficient for IRAK4 or MYD88, which mediate the function of Toll-like receptors (TLRs) except TLR3, contained VH4-34–expressing clones and showed decreased somatic hypermutation frequencies. In addition, VH4-34–encoded IgGs from IRAK4- and MYD88-deficient patients often displayed an unmutated FWR1 motif, revealing that these antibodies still recognize I/i antigens, whereas their healthy donor counterparts harbored FWR1 mutations abolishing self-reactivity. However, this paradoxical self-reactivity correlated with these VH4-34–encoded IgG clones binding commensal bacteria antigens. Hence, B cells expressing germline-encoded self-reactive VH4-34 antibodies may represent an innate-like B cell population specialized in the containment of commensal bacteria when gut barriers are breached.
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Affiliation(s)
- Jean-Nicolas Schickel
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT 06510
| | - Salomé Glauzy
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT 06510
| | - Yen-Shing Ng
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT 06510
| | - Nicolas Chamberlain
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT 06510
| | - Christopher Massad
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT 06510
| | - Isabelle Isnardi
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT 06510
| | - Nathan Katz
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT 06510
| | - Gulbu Uzel
- Laboratory of Clinical Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892
| | - Steven M Holland
- Laboratory of Clinical Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892.,Clinical Genomics Program, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892
| | - Capucine Picard
- Laboratory of Human Genetics of Infectious Diseases, Necker Branch, Necker Hospital for Sick Children, 75015 Paris, France.,Paris Descartes University, Imagine Institute, 75015 Paris, France
| | - Anne Puel
- Laboratory of Human Genetics of Infectious Diseases, Necker Branch, Necker Hospital for Sick Children, 75015 Paris, France.,Paris Descartes University, Imagine Institute, 75015 Paris, France
| | - Jean-Laurent Casanova
- Laboratory of Human Genetics of Infectious Diseases, Necker Branch, Necker Hospital for Sick Children, 75015 Paris, France.,Pediatric Hematology-Immunology Unit, Necker Hospital for Sick Children, 75015 Paris, France.,Paris Descartes University, Imagine Institute, 75015 Paris, France.,St Giles Laboratory of Human Genetics of Infectious Diseases, Rockefeller Branch, The Rockefeller University, New York, NY 10065.,Howard Hughes Medical Institute, New York, NY 10065
| | - Eric Meffre
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT 06510
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Hart GT, Akkaya M, Chida AS, Wei C, Jenks SA, Tipton C, He C, Wendel BS, Skinner J, Arora G, Kayentao K, Ongoiba A, Doumbo O, Traore B, Narum DL, Jiang N, Crompton PD, Sanz I, Pierce SK. The Regulation of Inherently Autoreactive VH4-34-Expressing B Cells in Individuals Living in a Malaria-Endemic Area of West Africa. THE JOURNAL OF IMMUNOLOGY 2016; 197:3841-3849. [PMID: 27798155 DOI: 10.4049/jimmunol.1600491] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Accepted: 09/21/2016] [Indexed: 11/19/2022]
Abstract
Plasmodium falciparum malaria is a deadly infectious disease in which Abs play a critical role in naturally acquired immunity. However, the specificity and nature of Abs elicited in response to malaria are only partially understood. Autoreactivity and polyreactivity are common features of Ab responses in several infections and were suggested to contribute to effective pathogen-specific Ab responses. In this article, we report on the regulation of B cells expressing the inherently autoreactive VH4-34 H chain (identified by the 9G4 mAb) and 9G4+ plasma IgG in adults and children living in a P. falciparum malaria-endemic area in West Africa. The frequency of 9G4+ peripheral blood CD19+ B cells was similar in United States adults and African adults and children; however, more 9G4+ B cells appeared in classical and atypical memory B cell compartments in African children and adults compared with United States adults. The levels of 9G4+ IgG increased following acute febrile malaria but did not increase with age as humoral immunity is acquired or correlate with protection from acute disease. This was the case, even though a portion of 9G4+ B cells acquired phenotypes of atypical and classical memory B cells and 9G4+ IgG contained equivalent numbers of somatic hypermutations compared with all other VHs, a characteristic of secondary Ab repertoire diversification in response to Ag stimulation. Determining the origin and function of 9G4+ B cells and 9G4+ IgG in malaria may contribute to a better understanding of the varied roles of autoreactivity in infectious diseases.
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Affiliation(s)
- Geoffrey T Hart
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD 20852
| | - Munir Akkaya
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD 20852
| | - Asiya S Chida
- Division of Rheumatology, Department of Medicine, Lowance Center for Human Immunology, Emory University, Atlanta, GA 30322
| | - Chungwen Wei
- Division of Rheumatology, Department of Medicine, Lowance Center for Human Immunology, Emory University, Atlanta, GA 30322
| | - Scott A Jenks
- Division of Rheumatology, Department of Medicine, Lowance Center for Human Immunology, Emory University, Atlanta, GA 30322
| | | | - Chenfeng He
- Department of Biomedical Engineering, Cockrell School of Engineering, University of Texas at Austin, Austin, TX 78712
| | - Ben S Wendel
- McKetta Department of Chemical Engineering, Cockrell School of Engineering, University of Texas at Austin, Austin, TX 78712
| | - Jeff Skinner
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD 20852
| | - Gunjan Arora
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD 20852
| | - Kassoum Kayentao
- Malaria Research and Training Centre, Department of Epidemiology of Parasitic Diseases, International Center of Excellence in Research, University of Sciences, Technique, and Technology of Bamako, Bamako, Mali; and
| | - Aissata Ongoiba
- Malaria Research and Training Centre, Department of Epidemiology of Parasitic Diseases, International Center of Excellence in Research, University of Sciences, Technique, and Technology of Bamako, Bamako, Mali; and
| | - Ogobara Doumbo
- Malaria Research and Training Centre, Department of Epidemiology of Parasitic Diseases, International Center of Excellence in Research, University of Sciences, Technique, and Technology of Bamako, Bamako, Mali; and
| | - Boubacar Traore
- Malaria Research and Training Centre, Department of Epidemiology of Parasitic Diseases, International Center of Excellence in Research, University of Sciences, Technique, and Technology of Bamako, Bamako, Mali; and
| | - David L Narum
- Laboratory of Malaria Immunology and Vaccinology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD 20852
| | - Ning Jiang
- Department of Biomedical Engineering, Cockrell School of Engineering, University of Texas at Austin, Austin, TX 78712
| | - Peter D Crompton
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD 20852
| | - Ignacio Sanz
- Division of Rheumatology, Department of Medicine, Lowance Center for Human Immunology, Emory University, Atlanta, GA 30322
| | - Susan K Pierce
- Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD 20852;
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4
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Naz RK. Female genital tract immunity: distinct immunological challenges for vaccine development. J Reprod Immunol 2012; 93:1-8. [DOI: 10.1016/j.jri.2011.09.005] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2011] [Revised: 09/27/2011] [Accepted: 09/30/2011] [Indexed: 10/14/2022]
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5
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Liedtke M, Twist CJ, Medeiros BC, Gotlib JR, Berube C, Bieber MM, Bhat NM, Teng NN, Coutre SE. Phase I trial of a novel human monoclonal antibody mAb216 in patients with relapsed or refractory B-cell acute lymphoblastic leukemia. Haematologica 2011; 97:30-7. [PMID: 21993685 DOI: 10.3324/haematol.2011.045997] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND This phase I trial was conducted to determine the safety and pharmacokinetics of monoclonal antibody 216, a human monoclonal Immunoglobulin M antibody targeting a linear B-cell lactosamine antigen, administered alone and in combination with vincristine in patients with relapsed or refractory B-cell acute lymphoblastic leukemia, and to preliminarily assess tumor targeting and efficacy. DESIGN AND METHODS Three cohorts of patients received escalating doses of monoclonal antibody 216 administered as an intravenous infusion. In the case of poor response to the first dose of monoclonal antibody 216 alone, defined as less than 75% reduction in peripheral blood blast count, a second dose of the antibody with vincristine was given between days 4 and 7. Responses were assessed weekly until day 35. Serum concentration of monoclonal antibody 216 was measured before and after infusion. Monoclonal antibody 216 targeting was determined with an anti-idiotypic antibody to monoclonal antibody 216 and preliminary efficacy was analyzed by changes in peripheral blood blasts. RESULTS Thirteen patients were enrolled. One episode of grade 3 epistaxis was the only dose-limiting toxicity observed. All patients showed a poor response to the first monoclonal antibody 216 infusion with a decrease in peripheral blasts from 6-65% in 9 patients. In 8 patients, addition of vincristine to monoclonal antibody 216 resulted in an average reduction of the peripheral blasts of 81%. One patient without peripheral blasts achieved a hypoplastic marrow without evidence of leukemia after one infusion of monoclonal antibody 216 and monoclonal antibody 216/vincristine each. Monoclonal antibody 216 was detected on peripheral blasts in all patients. CONCLUSIONS Treatment with monoclonal antibody 216 in combination with vincristine is feasible and well tolerated in patients with relapsed or refractory B-cell acute lymphoblastic leukemia. Binding of monoclonal antibody 216 to leukemic blasts was efficient, and favorable early responses were observed.
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Affiliation(s)
- Michaela Liedtke
- Department of Medicine, Stanford University School of Medicine, 875 Blake Wilbur Drive, Stanford, CA 94305, USA.
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6
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Abstract
Hairy cell leukemia variant (HCLv) presents with high disease burden, lack of typical antigens like CD25, and poor response to standard treatments like cladribine. Occasionally, patients with classic HCL respond poorly. Clinical and molecular features of HCL and HCLv has not been compared. Rearrangements expressing immunoglobulin VH chain were sequenced, including 22 from 20 patients with HCLv and 63 from 62 patients with classic HCL. Most patients were seeking relapsed/refractory trials, representing a poor-prognosis population. VH4-34, a gene commonly used in autoimmune disorders, was observed in 8 (40%) HCLv and 6 (10%) classic (P = .004) HCL patients. Compared with 71 VH4-34(-) rearrangements, 14 VH4-34(+) rearrangements were more frequently (P < .001) unmutated, defined as greater than 98% homologous to germline sequence. VH4-34(+) patients had greater white blood cell counts at diagnosis (P = .002), lower response rate (P < .001) and progression-free survival (P = .007) after initial cladribine, and shorter overall survival from diagnosis (P < .001). Response and survival were more closely related to VH4-34 status than to whether or not patients had HCLv. VH4-34(+) HCL is an important disorder that only partly overlaps with the previously described HCLv. Response to initial single-agent cladribine therapy is suboptimal; these patients should be considered for alternative approaches, including antibody-related therapy.
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7
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Hershberg U, Uduman M, Shlomchik MJ, Kleinstein SH. Improved methods for detecting selection by mutation analysis of Ig V region sequences. Int Immunol 2008; 20:683-94. [PMID: 18397909 DOI: 10.1093/intimm/dxn026] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Statistical methods based on the relative frequency of replacement mutations in B lymphocyte Ig V region sequences have been widely used to detect the forces of selection that shape the B cell repertoire. However, current methods produce an unexpectedly high frequency of false positives and are sensitive to intrinsic biases of somatic hypermutation that can give the appearance of selection. The new statistical test proposed here provides a better trade-off between sensitivity and specificity compared with previous approaches. The low specificity of existing methods was shown in silico to result from an interaction between the effects of positive and negative selection. False detection of positive selection was confirmed in vivo through a re-analysis of published sequence data from diffuse large B cell lymphomas, highlighting the need for re-analysis of some existing studies. The sensitivity of the proposed method to detect selection was validated using new Ig transgenic mouse models in which positive selection was expected to be a significant force, as well as with a simulation-based approach. Previous concerns that intrinsic biases of somatic hypermutation could give the appearance of selection were addressed by extending the current mutation models to more fully account for the impact of microsequence on relative mutability and to include transition bias. High specificity was confirmed using a large set of non-productively rearranged Ig sequences. These results show that selection can be detected in vivo with high specificity using the new method proposed here, allowing greater insight into the existence and direction of antigen-driven selection.
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Affiliation(s)
- Uri Hershberg
- Department of Laboratory Medicine, Yale University School of Medicine, New Haven, CT 06520, USA
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8
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Widhopf GF, Goldberg CJ, Toy TL, Rassenti LZ, Wierda WG, Byrd JC, Keating MJ, Gribben JG, Rai KR, Kipps TJ. Nonstochastic pairing of immunoglobulin heavy and light chains expressed by chronic lymphocytic leukemia B cells is predicated on the heavy chain CDR3. Blood 2007; 111:3137-44. [PMID: 17675554 PMCID: PMC2265453 DOI: 10.1182/blood-2007-02-073130] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
We analyzed the immunoglobulin (Ig) variable heavy (IGHV) and variable light chain genes used by leukemia cells of 258 unrelated patients with chronic lymphocytic leukemia (CLL) found to express unmutated Ig heavy chains (IgH) encoded by a 51p1 allele of IGHV1-69 among 1846 CLL patients examined. We found each had at least 98% homology to an identified germline IGKV or IGLV gene. Within the 258 IgH, we identified heavy chain CDR3 (HCDR3) motifs encoded by certain unmutated IGHD and IGHJ genes with restricted reading frames. Frequent and restricted use of particular IGKV and IGLV genes revealed nonstochastic pairing of disparate Ig light chains (IgL) with IgH that had restricted HCDR3 motifs designated CLL69A, -B, -C, and -D. Eighty-six percent (19/22) of CLL cases that expressed motif CLL69B encoded by IGHD2-2/IGHJ6 had distinctive IgL encoded by IGKV1-39. Similarly, 83% (5/6) of samples with motif CLL69D encoded by IGHD2-2/IGHJ6 expressed IGKV3-11, 100% (25/25) with motif CLL69A encoded by IGHD3-16/IGHJ3 used IGKV3-20, and 77% (10/13) with motif CLL69C encoded by IGHD3-3/IGHJ6 expressed IGLV3-9. This study reveals nonstochastic pairing of IgH with particular IgL that is predicated upon Ig HCDR3 structure, providing compelling evidence for selection of antibodies expressed in CLL by conventional antigens.
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Affiliation(s)
- George F Widhopf
- Chronic Lymphocytic Leukemia Research Consortiuim, La Jolla, CA, USA
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9
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Bieber MM, Twist CJ, Bhat NM, Teng NNH. Effects of human monoclonal antibody 216 on B-progenitor acute lymphoblastic leukemia in vitro. Pediatr Blood Cancer 2007; 48:380-6. [PMID: 16421902 DOI: 10.1002/pbc.20770] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND Human monoclonal antibody (mAb) 216 is a naturally occurring IgM cytotoxic mAb that binds to a glycosylated epitope on the surface of B-lymphocytes. This study investigated if this mAb could bind and kill acute lymphoblastic leukemia (ALL) B-progenitor lymphoblasts in vitro. ALL cell lines were used to determine if combining mAb 216 with chemotherapeutic drugs would enhance killing and cell lines were used to measure cytotoxicity by mAb 216 with human complement. PROCEDURE Expression of cell surface markers and mAb 216 epitope on fresh and banked ALL bone marrow samples was determined by flow cytometry. Fresh lymphoblasts were incubated for 20 hr with mAb 216 without complement to measure cytotoxicity. Cytotoxicity of ALL cell lines incubated with mAb 216 and vincristine (VCR) or human complement was determined using flow cytometry. RESULTS Pre-B-ALL cells but not T-ALL cells are bound and killed by mAb 216. The combination of mAb 216 and VCR at sub-therapeutic levels demonstrated enhanced cytotoxicity beyond that observed for either agent alone. Incubation of mAb 216 with human complement increased cytotoxicity of ALL cell lines. CONCLUSION This increased cytotoxicity with chemotherapy and the functional ability of mAb 216 to use multiple pathways to induce cell death identify mAb 216 as a potentially novel therapeutic tool in the treatment of B-progenitor ALL. Based on the results from this preclinical study, a Phase I clinical trial with mAb 216 for the treatment of patients with relapsed or refractory B-lineage ALL is ongoing.
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Affiliation(s)
- Marcia M Bieber
- Department of Gynecology and Obstetrics, Division of Gynecologic Oncology, Stanford University School of Medicine, Stanford, California, USA.
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Milner ECB, Anolik J, Cappione A, Sanz I. Human innate B cells: a link between host defense and autoimmunity? SPRINGER SEMINARS IN IMMUNOPATHOLOGY 2005; 26:433-52. [PMID: 15633016 PMCID: PMC1431976 DOI: 10.1007/s00281-004-0188-9] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2004] [Accepted: 10/12/2004] [Indexed: 12/01/2022]
Abstract
B cells play a variety of immunoregulatory roles through their antigen-presentation ability and through cytokine and chemokine production. Innate immune activation of B cells may play a beneficial role through the generation of natural cross-reactive antibodies, by maintaining B cell memory and by exercising immunomodulatory functions that may provide protection against autoimmunity. In this article, we review human B cell populations and their functional properties, with a particular focus on a population of inherently autoreactive B cells, which seem to play an important physiological role in innate immunity, but which, if selected into adaptive immune responses, appear to become pathogenic agents in systemic lupus erythematosus.
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Affiliation(s)
- Eric C. B. Milner
- Department of Medicine, Clinical Immunology and Rheumatology Unit, University of Rochester Medical School, 601 Elmwood Avenue, Box 695, Rochester, NY 14642, USA
| | - Jennifer Anolik
- Department of Medicine, Clinical Immunology and Rheumatology Unit, University of Rochester Medical School, 601 Elmwood Avenue, Box 695, Rochester, NY 14642, USA
| | - Amedeo Cappione
- Department of Medicine, Clinical Immunology and Rheumatology Unit, University of Rochester Medical School, 601 Elmwood Avenue, Box 695, Rochester, NY 14642, USA
| | - Iñaki Sanz
- Department of Medicine, Clinical Immunology and Rheumatology Unit, University of Rochester Medical School, 601 Elmwood Avenue, Box 695, Rochester, NY 14642, USA
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Cappione AJ, Pugh-Bernard AE, Anolik JH, Sanz I. Lupus IgG VH4.34 Antibodies Bind to a 220-kDa Glycoform of CD45/B220 on the Surface of Human B Lymphocytes. THE JOURNAL OF IMMUNOLOGY 2004; 172:4298-307. [PMID: 15034044 DOI: 10.4049/jimmunol.172.7.4298] [Citation(s) in RCA: 91] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Anti-lymphocyte autoantibodies are a well-recognized component of the autoimmune repertoire in human systemic lupus erythematosus (SLE) and have been postulated to have pathogenic consequences. Early studies indicated that IgM anti-lymphocyte autoantibodies mainly recognized T cells and identified CD45, a protein tyrosine phosphatase of central significance in the modulation of lymphocyte function, as the main antigenic target on T cells. However, more recent work indicates that lupus autoantibodies can also recognize B cells and that CD45 may also represent their antigenic target. In particular, IgM Abs encoded by V(H)4.34 appear to have special tropism for B cells, and strong, but indirect evidence suggests that they may recognize a B cell-specific CD45 isoform. Because V(H)4.34 Abs are greatly expanded in SLE, in the present study we investigated the antigenic reactivity of lupus sera V(H)4.34 IgG Abs and addressed their contribution to the anti-lymphocyte autoantibody repertoire in this disease. Our biochemical studies conclusively demonstrate that lupus IgG V(H)4.34 Abs target a developmentally regulated B220-specific glycoform of CD45, and more specifically, an N-linked N-acetyllactosamine determinant preferentially expressed on naive B cells that is sterically masked by sialic acid on B220-positive memory B cells. Strikingly, our data also indicate that this reactivity in SLE sera is restricted to V(H)4.34 Abs and can be eliminated by depleting these Abs. Overall, our data indicate that V(H)4.34 Abs represent a major component of the lupus IgG autoantibody repertoire and suggest that the carbohydrate moiety they recognize may act as a selecting Ag in SLE.
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Affiliation(s)
- Amedeo J Cappione
- Department of Medicine, Clinical Immunology and Rheumatology Unit, University of Rochester Medical Center, Rochester, NY 14642, USA
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12
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Nardelli-Haefliger D, Wirthner D, Schiller JT, Lowy DR, Hildesheim A, Ponci F, De Grandi P. Specific antibody levels at the cervix during the menstrual cycle of women vaccinated with human papillomavirus 16 virus-like particles. J Natl Cancer Inst 2003; 95:1128-37. [PMID: 12902442 DOI: 10.1093/jnci/djg018] [Citation(s) in RCA: 181] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND In early-phase trials, a human papillomavirus 16 (HPV16) virus-like particle (VLP) vaccine has been shown to be well tolerated, immunogenic, and protective against HPV16 in women, most of whom were taking oral contraceptives. Previous studies have not determined whether HPV immunization results in specific antibody levels in the human genital tract or whether these levels might vary during contraceptive or ovulatory cycles. Therefore, we determined the levels of total and specific antibodies in the cervical secretions of women who had been immunized with HPV16 VLPs and examined the influence of the menstrual cycle and oral contraceptive use on these levels. METHODS Two groups of women were immunized, seven who were taking oral contraceptives and 11 who were ovulating. After seroconversion, serum and cervical secretions were collected twice weekly for 5 weeks. Total immunoglobulins (IgG and IgA) and vaccine-specific IgGs were determined by enzyme-linked immunosorbent assay. Nonparametric statistical analyses were used to determine the statistical significance of differences in IgG levels between groups, and correlations between serum- and cervical-specific IgG levels were determined by the Spearman correlation coefficient. RESULTS All participants developed detectable titers of anti-HPV16 VLP IgGs in their cervical secretions after immunization. The cervical titers of specific IgG and total IgGs and IgAs among participants in the contraceptive group were relatively constant throughout the contraceptive cycle. In contrast, the cervical titers of specific IgG and total IgGs and IgAs among participants in the ovulatory group varied during the menstrual cycle, being highest during the proliferative phase, decreasing approximately ninefold around ovulation, and increasing approximately threefold during the luteal phase. Serum- and cervical-specific IgG levels were correlated (r =.86) in women in the contraceptive group but not in women in the ovulatory group (r =.27). CONCLUSIONS The relatively high titer of anti-HPV16 antibodies at the cervix is promising in terms of vaccine efficacy; however, the decrease in antibody titer around ovulation raises the possibility that the HPV16 VLP vaccine might be less effective during the peri-ovulatory phase.
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Stewart AK, Gupta H, Cappe D, Sutherland DR. Erythropoiesis: Splenic Immunoglobulin Variable Region Genes Encoding Red Blood Cell Binding Fab Fragments in Autoimmune Hemolytic Anemia. HEMATOLOGY (AMSTERDAM, NETHERLANDS) 2001; 4:165-178. [PMID: 11399561 DOI: 10.1080/10245332.1999.11746440] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
An absolute requirement for the V(H(4-34) ) immunoglobulin (Ig) variable (V) region heavy chain (V(H) ) gene has been demonstrated in pathogenic cold agglutinin autoantibodies. Investigation of IgG binding anti-Rhesus (Rh) alloantibodies provides further evidence of V gene restriction in red blood cell (RBC) binding antibodies and demonstrates that the V(H(4-34) ) gene used to form cold agglutinins may also encode RBC antibodies of varied specificities. We reasoned that a similar V gene restriction may be evident in the gene segments encoding IgG anti-RBC autoantibodies mediating autoimmune hemolytic anemia (AIHA). To further examine this question IgG Fab fragment phage display libraries were constructed from the spleen of a patient with AIHA. The index autoantibody appeared to have incomplete anti-C specificity and bound all panel RBCs except Rh null. The Fab fragment phage display libraries were therefore panned twice on CDE/CDe RBCs and binding phage were eluted. Binding of the phage displayed Fab fragments to RBCs was confirmed by immunoflourescence and flow cytometry. Specificity was confirmed by the absence of binding to Rh null cells, murine RBCs and to human peripheral blood lymphocytes. Molecular analysis of Ig V genes encoding the pan RBC binding Fab fragments revealed a relative V(H) gene restriction and evidence of somatic mutation. The V(H(3) ) family member V(H(26) ) was prominent in RBC binding Fabs. The V(H(3) ) family member hV3005 and the V(H(4) ) family DP-65 gene segments also encoded RBC binding Fabs. The J(H(4) ) gene segment was present in all binding clones. Varied kappa and lambda light chain (V(L) ) genes were identified by sequencing and no single light chain was prevalent. Three of the ten V(L) and two of the three V(H) identified by sequencing appeared to derive from germline genes previously noted to have RBC binding specificity. We conclude that splenic Ig V genes can encode pan RBC binding antibodies with specificities similar to autoantibodies found in AIHA and that V(H) gene segment utilization by these antibodies is derived from a limited pool of somatically mutated V(H) gene segments.
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Affiliation(s)
- A. K. Stewart
- Division of Hematology, The Toronto Hospital, and The Canadian Red Cross, Toronto Center, Toronto, Ontario
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Aguilera I, Melero J, Nuñez-Roldan A, Sanchez B. Molecular structure of eight human autoreactive monoclonal antibodies. Immunology 2001; 102:273-80. [PMID: 11298825 PMCID: PMC1783190 DOI: 10.1046/j.1365-2567.2001.01159.x] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The heavy (H) and light (L) chain V-region sequences of eight human autoreactive immunoglobulin M (IgM) monoclonal antibodies (mAbs: BY-4, BY-7, BY-12, IRM-3, IRM-7, IRM-8, IRM-10 and CDC-1) were determined at the cDNA level. All VH and VL families were identified. Four different VH families were represented, VH3 being the most common as five of the mAbs (BY-7, BY-12, IRM-3, IRM-8 and CDC-1) used genetic elements of this family, whereas VH1, VH2 and VH4 were only present in IRM-7, BY-4 and IRM-10, respectively. BY-4, BY-7, BY-12, IRM-7 and IRM-10 reacted with a variety of self as well as non-self antigens, thus exhibiting polyreactive behaviour. Comparison of the gene segments utilized by these mAbs with their germline counterparts revealed that the gene segments were close to germline configuration. The length of H-CDR3 was found to be relatively long (27-60 nucleotides) among the polyreactive mAbs and the presence of Tyr and Trp residues in this region seems to be of vital importance for polyreactivity. We have analysed the utilization of gene elements and the presence of amino acid residues in regions particularly important for antigen binding, such as CDR. Common molecular features relating to the function of the mAbs are discussed.
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Affiliation(s)
- I Aguilera
- Servicio de Inmunología, Hospital Universitario Virgen del Rocío, Sevilla, Spain
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Mageed RA, Harmer IJ, Wynn SL, Moyes SP, Maziak BB, Brüggemann M, MacKworth-Young CG. Rearrangement of the human heavy chain variable region gene V3-23 in transgenic mice generates antibodies reactive with a range of antigens on the basis of VHCDR3 and residues intrinsic to the heavy chain variable region. Clin Exp Immunol 2001; 123:1-8. [PMID: 11167990 PMCID: PMC1905971 DOI: 10.1046/j.1365-2249.2001.01380.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
To formulate a 'logic' for how a single immunoglobulin variable region gene generates antibodies with different antigen specificity and polyreactivity, we analysed chimeric antibodies produced in transgenic mice carrying the germ-line human V3-23 gene, multiple diversity (D) and joining (J) gene segments. Hybridomas producing antibodies encoded by the V3-23 gene in combination with different mouse Vkappa genes were obtained by fusion of splenocytes from transgenic mice. All antibodies had human mu-chains and mouse light chains, were multimeric in structure and expressed the human V3-23 gene. Nucleotide sequence analyses of genes encoding the heavy and light chains of 12 antibodies in relation to antigen specificity highlighted the importance of heavy chain variable region CDR3 in determining reactivity with different antigens. However, the results also suggest that non-CDR3 sequences intrinsic to the V3-23 gene itself may be involved in, or determine, the binding of the chimeric antibodies to some of the antigens tested in the current study.
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MESH Headings
- Adult
- Amino Acid Sequence
- Animals
- Antibodies, Anti-Idiotypic/biosynthesis
- Antibodies, Anti-Idiotypic/metabolism
- Antigen-Antibody Reactions/genetics
- Base Sequence
- Cell Fusion/methods
- Complementarity Determining Regions/biosynthesis
- Complementarity Determining Regions/genetics
- Complementarity Determining Regions/immunology
- Gene Expression Regulation/immunology
- Gene Rearrangement, B-Lymphocyte, Heavy Chain/immunology
- Gene Rearrangement, B-Lymphocyte, Light Chain/immunology
- Genes, Immunoglobulin/immunology
- Germ-Line Mutation
- Humans
- Hybridomas
- Immunoglobulin Heavy Chains/biosynthesis
- Immunoglobulin Heavy Chains/genetics
- Immunoglobulin Heavy Chains/immunology
- Immunoglobulin Variable Region/biosynthesis
- Immunoglobulin Variable Region/genetics
- Immunoglobulin Variable Region/immunology
- Immunoglobulin kappa-Chains/biosynthesis
- Immunoglobulin kappa-Chains/genetics
- Mice
- Mice, Inbred C57BL
- Mice, Inbred CBA
- Mice, Transgenic
- Molecular Sequence Data
- Sequence Homology, Nucleic Acid
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Affiliation(s)
- R A Mageed
- Kennedy Institute of Rheumatology and Rheumatology Unit, Charing Cross Hospital, London, UK.
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Bhat NM, Bieber MM, Spellerberg MB, Stevenson FK, Teng NN. Recognition of auto- and exoantigens by V4-34 gene encoded antibodies. Scand J Immunol 2000; 51:134-40. [PMID: 10652159 DOI: 10.1046/j.1365-3083.2000.00654.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The antigenic specificities of 24 V4-34-encoded monoclonal antibodies were compared with the amino acid sequence. The specificities were divided into three categories, red blood cells, B lymphocytes and auto/exoantigens. Six anti-I monoclonal antibodies, with multiple substitutions in their VH region, did not bind B lymphocytes or auto/exoantigens. Reactivity to these two antigens segregated with the 16 anti-i monoclonal antibodies, which were derived from the near germline V4-34 gene. All anti-i monoclonal antibodies bound B lymphocytes, albeit with varying intensities. B-cell binding correlated with basic amino acids in the VH-CDR3. Reactivity to auto/exoantigens was demonstrated only by a subset anti-i monoclonal antibodies and did not correlate with B-lymphocyte or i-antigen binding. These anti-ssDNA reactive monoclonal antibodies had basic amino acids in the VH-CDR3, strongly supporting the suggested role of arginine in DNA binding. However, an arginine-rich CDR3 was not enough to ensure DNA reactivity, since six other anti-i monoclonal antibodies that fulfilled this criteria did not bind ssDNA. Thus it is possible that the anti-DNA reactivity of V4-34-encoded monoclonal antibodies is mediated by the classic antigen-binding groove generated by the CDRs of the heavy/light chains. In contrast, anti-B-cell/i-antigen reactivity is mediated, unconventionally, by the V4-34 protein with a dominant influence of the VH-CDR3.
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Affiliation(s)
- N M Bhat
- Division of Gynecologic Oncology, Department of Gynecology and Obstetrics, Stanford University School of Medicine, Stanford, CA 94305, USA
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Abstract
Immune responses change in aging humans, but it is not known whether there is an age-associated change in the expressed B cell repertoire. We compared Ig VH cDNA libraries from circulating B cells of five elderly and three young human adults. As in young persons, nearly two-thirds of the cDNA clones from older subjects had zero to three V(H) mutations, although there was more individual variation among the elderly. V(H)4 family expression increased in older subjects, both in unmutated and in mutated cDNA clones, whereas V(H)3 family expression predominated in young adults. To test for bias toward activated cells in the cDNA libraries, we studied two older persons by both cDNA library analysis and single-cell RT-PCR. In one subject, more than 85% of VH segments were unmutated by either analysis. In the second, mutated Ig segments were much more frequent in cDNA clones than in consecutive single cells; however, V(H) family usage and high representation of particular genes were similar in both analyses. While aging humans continue to produce naive B cells with unmutated Ig genes, a shift to greater use of the V(H)4 family members and expression of particular genes may reflect changes in selection of developing B cells before affinity maturation toward reactivity with foreign antigen.
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Affiliation(s)
- X Wang
- Department of Biochemistry, Tufts University School of Medicine and the Sackler School of Graduate Biomedical Sciences, Boston, Massachusetts 02111, USA
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