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Yaykasli KO, van Schie KA, Toes REM, Wuhrer M, Koeleman CAM, Bila G, Negrych N, Schett G, Knopf J, Herrmann M, Bilyy R. Neutrophil Depletion Changes the N-Glycosylation Pattern of IgG in Experimental Murine Sepsis. Int J Mol Sci 2024; 25:6478. [PMID: 38928183 PMCID: PMC11203722 DOI: 10.3390/ijms25126478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2024] [Revised: 05/29/2024] [Accepted: 06/08/2024] [Indexed: 06/28/2024] Open
Abstract
Sepsis is a life-threatening condition with a rising disease burden worldwide. It is a multifactorial disease and is defined as a dysregulated host response to infection. Neutrophils have been shown to be involved in the pathogenesis of sepsis by exacerbating inflammation. However, the exact effector mechanism of action still remains a mystery. Changes in the glycosylation pattern of the immunoglobulin G (IgG) Fc region are described for several diseases including meningococcal sepsis. In this study, we investigated the possible contribution of neutrophils and neutrophil implication, potentially related to degranulation or neutrophil extracellular trap (NET) formation in changing the IgG Fc N-glycosylation pattern in a murine sepsis model. We have measured the serum level of cytokines/chemokines and immunoglobulins, the serum activity of neutrophil elastase (NE), and analyzed the IgG Fc glycosylation pattern by Liquid Chromatography-Electrospray Ionization-Mass Spectrometry (LC-ESI-MS) and Lectin enzyme-linked immunosorbent assay (ELISA). We observed an increased activity of NE- and neutrophil-associated cytokines such as keratinocyte chemoattractant (KC) with the development of sepsis. Regarding the IgG Fc N-glycosylation, we observed an increase in fucosylation and α1,3-galactosylation and a decrease for sialyation. Interestingly, these changes were not uniform for all IgG subclasses. After depletion of neutrophils, we saw a change in the exposure of fucose and α2,6-linked sialic acid during the time course of our experimental sepsis model. In conclusion, neutrophils can influence changes in the IgG glycosylation pattern in experimental sepsis.
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Affiliation(s)
- Kursat O. Yaykasli
- Department of Internal Medicine 3, Rheumatology and Immunology, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Universitätsklinikum Erlangen, 91054 Erlangen, Germany; (K.O.Y.)
- Deutsches Zentrum für Immuntherapie (DZI), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Universitätsklinikum Erlangen, 91054 Erlangen, Germany
| | - Karin A. van Schie
- Department of Rheumatology, Leiden University Medical Center, 2333 ZA Leiden, The Netherlands
| | - René E. M. Toes
- Department of Rheumatology, Leiden University Medical Center, 2333 ZA Leiden, The Netherlands
| | - Manfred Wuhrer
- Center for Proteomics and Metabolomics, Leiden University Medical Center, 2333 ZA Leiden, The Netherlands
| | - Carolien A. M. Koeleman
- Center for Proteomics and Metabolomics, Leiden University Medical Center, 2333 ZA Leiden, The Netherlands
| | - Galyna Bila
- Danylo Halytsky Lviv National Medical University, 79010 Lviv, Ukraine (R.B.)
- Institute of Cellular Biology and Pathology ‘Nicolae Simionescu’, 050568 Bucharest, Romania
| | - Nazar Negrych
- Danylo Halytsky Lviv National Medical University, 79010 Lviv, Ukraine (R.B.)
| | - Georg Schett
- Department of Internal Medicine 3, Rheumatology and Immunology, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Universitätsklinikum Erlangen, 91054 Erlangen, Germany; (K.O.Y.)
- Deutsches Zentrum für Immuntherapie (DZI), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Universitätsklinikum Erlangen, 91054 Erlangen, Germany
| | - Jasmin Knopf
- Department of Internal Medicine 3, Rheumatology and Immunology, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Universitätsklinikum Erlangen, 91054 Erlangen, Germany; (K.O.Y.)
- Deutsches Zentrum für Immuntherapie (DZI), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Universitätsklinikum Erlangen, 91054 Erlangen, Germany
- Department of Pediatric Surgery, University Medical Center Mannheim, Heidelberg University, 68167 Mannheim, Germany
| | - Martin Herrmann
- Department of Internal Medicine 3, Rheumatology and Immunology, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Universitätsklinikum Erlangen, 91054 Erlangen, Germany; (K.O.Y.)
- Deutsches Zentrum für Immuntherapie (DZI), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Universitätsklinikum Erlangen, 91054 Erlangen, Germany
| | - Rostyslav Bilyy
- Danylo Halytsky Lviv National Medical University, 79010 Lviv, Ukraine (R.B.)
- Institute of Cellular Biology and Pathology ‘Nicolae Simionescu’, 050568 Bucharest, Romania
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2
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Nishida Y, Shirakashi M, Hashii N, Nakashima R, Nakayama Y, Katsushima M, Watanabe R, Onizawa H, Hiwa R, Tsuji H, Kitagori K, Akizuki S, Onishi A, Murakami K, Yoshifuji H, Tanaka M, Tsuruyama T, Morinobu A, Hashimoto M. Pathogenicity of IgG-Fc desialylation and its association with Th17 cells in an animal model of systemic lupus erythematosus. Mod Rheumatol 2024; 34:523-529. [PMID: 37300805 DOI: 10.1093/mr/road054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Accepted: 05/28/2023] [Indexed: 06/12/2023]
Abstract
OBJECTIVES Decreased sialylation of IgG-Fc glycans has been reported in autoimmune diseases, but its role in systemic lupus erythematosus (SLE) is not fully understood. In this study, we examined the pathogenicity of IgG desialylation and its association with Th17 in SLE using an animal model. METHODS B6SKG mice, which develop lupus-like systemic autoimmunity due to the ZAP70 mutation, were used to investigate the pathogenicity of IgG desialylation. The proportion of sialylated IgG was compared between B6SKG and wild-type mice with or without β-glucan treatment-induced Th17 expansion. Anti-interleukin (IL)-23 and anti-IL-17 antibodies were used to examine the role of Th17 cells in IgG glycosylation. Activation-induced cytidine deaminase-specific St6gal1 conditionally knockout (cKO) mice were generated to examine the direct effect of IgG desialylation. RESULTS The proportions of sialylated IgG were similar between B6SKG and wild-type mice in the steady state. However, IgG desialylation was observed after β-glucan-induced Th17 expansion, and nephropathy also worsened in B6SKG mice. Anti-IL-23/17 treatment suppressed IgG desialylation and nephropathy. Glomerular atrophy was observed in the cKO mice, suggesting that IgG desialylation is directly involved in disease exacerbation. CONCLUSIONS IgG desialylation contributes to the progression of nephropathy, which is ameliorated by blocking IL-17A or IL-23 in an SLE mouse model.
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Affiliation(s)
- Yuri Nishida
- Department of Rheumatology and Clinical Immunology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Mirei Shirakashi
- Department of Rheumatology and Clinical Immunology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Noritaka Hashii
- Division of Biological Chemistry and Biologicals, National Institute of Health Sciences, Kanagawa, Japan
| | - Ran Nakashima
- Department of Rheumatology and Clinical Immunology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Yoichi Nakayama
- Department of Rheumatology and Clinical Immunology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Masao Katsushima
- Department of Rheumatology and Clinical Immunology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Ryu Watanabe
- Department of Clinical Immunology, Graduate School of Medicine, Osaka Metropolitan University, Osaka, Japan
| | - Hideo Onizawa
- Department of Advanced Medicine for Rheumatic Diseases, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Ryosuke Hiwa
- Department of Rheumatology and Clinical Immunology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Hideaki Tsuji
- Department of Rheumatology and Clinical Immunology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Koji Kitagori
- Department of Rheumatology and Clinical Immunology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Shuji Akizuki
- Department of Rheumatology and Clinical Immunology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Akira Onishi
- Department of Advanced Medicine for Rheumatic Diseases, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Kosaku Murakami
- Center for Cancer Immunotherapy and Immunobiology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Hajime Yoshifuji
- Department of Rheumatology and Clinical Immunology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Masao Tanaka
- Department of Advanced Medicine for Rheumatic Diseases, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Tatsuaki Tsuruyama
- Department of Drug Discovery Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Akio Morinobu
- Department of Rheumatology and Clinical Immunology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Motomu Hashimoto
- Department of Clinical Immunology, Graduate School of Medicine, Osaka Metropolitan University, Osaka, Japan
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3
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Glendenning LM, Zhou JY, Kukan EN, Gao C, Cummings RD, Joshi S, Whiteheart SW, Cobb BA. Platelet-localized ST6Gal1 does not impact IgG sialylation. Glycobiology 2023; 33:943-953. [PMID: 37379323 PMCID: PMC10859628 DOI: 10.1093/glycob/cwad052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 06/22/2023] [Accepted: 06/23/2023] [Indexed: 06/30/2023] Open
Abstract
The IgG antibody class forms an important basis of the humoral immune response, conferring reciprocal protection from both pathogens and autoimmunity. IgG function is determined by the IgG subclass, as defined by the heavy chain, as well as the glycan composition at N297, the conserved site of N-glycosylation within the Fc domain. For example, lack of core fucose promotes increased antibody-dependent cellular cytotoxicity, whereas α2,6-linked sialylation by the enzyme ST6Gal1 helps to drive immune quiescence. Despite the immunological significance of these carbohydrates, little is known about how IgG glycan composition is regulated. We previously reported that mice with ST6Gal1-deficient B cells have unaltered IgG sialylation. Likewise, ST6Gal1 released into the plasma by hepatocytes does not significantly impact overall IgG sialylation. Since IgG and ST6Gal1 have independently been shown to exist in platelet granules, it was possible that platelet granules could serve as a B cell-extrinsic site for IgG sialylation. To address this hypothesis, we used a platelet factor 4 (Pf4)-Cre mouse to delete ST6Gal1 in megakaryocytes and platelets alone or in combination with an albumin-Cre mouse to also remove it from hepatocytes and the plasma. The resulting mouse strains were viable and had no overt pathological phenotype. We also found that despite targeted ablation of ST6Gal1, no change in IgG sialylation was apparent. Together with our prior findings, we can conclude that in mice, neither B cells, the plasma, nor platelets have a substantial role in homeostatic IgG sialylation.
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Affiliation(s)
- Leandre M Glendenning
- Department of Pathology, Case Western Reserve University School of Medicine, 10900 Euclid Avenue, Cleveland, OH 44106-7288, USA
| | - Julie Y Zhou
- Department of Pathology, Case Western Reserve University School of Medicine, 10900 Euclid Avenue, Cleveland, OH 44106-7288, USA
| | - Emily N Kukan
- Department of Pathology, Case Western Reserve University School of Medicine, 10900 Euclid Avenue, Cleveland, OH 44106-7288, USA
| | - Chao Gao
- Harvard Medical School Center for Glycoscience, National Center for Functional Glycomics, Beth Israel Deaconess Medical Center, 330 Brookline Avenue, Boston, MA 02215, USA
| | - Richard D Cummings
- Harvard Medical School Center for Glycoscience, National Center for Functional Glycomics, Beth Israel Deaconess Medical Center, 330 Brookline Avenue, Boston, MA 02215, USA
| | - Smita Joshi
- Department of Molecular and Cellular Biochemistry, University of Kentucky, 741 S Limestone Street, Lexington, KY 40536-0509, USA
| | - Sidney W Whiteheart
- Department of Molecular and Cellular Biochemistry, University of Kentucky, 741 S Limestone Street, Lexington, KY 40536-0509, USA
| | - Brian A Cobb
- Department of Pathology, Case Western Reserve University School of Medicine, 10900 Euclid Avenue, Cleveland, OH 44106-7288, USA
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4
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Nimmerjahn F, Vidarsson G, Cragg MS. Effect of posttranslational modifications and subclass on IgG activity: from immunity to immunotherapy. Nat Immunol 2023; 24:1244-1255. [PMID: 37414906 DOI: 10.1038/s41590-023-01544-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Accepted: 05/15/2023] [Indexed: 07/08/2023]
Abstract
Humoral immune responses are characterized by complex mixtures of polyclonal antibody species varying in their isotype, target epitope specificity and affinity. Posttranslational modifications occurring during antibody production in both the antibody variable and constant domain create further complexity and can modulate antigen specificity and antibody Fc-dependent effector functions, respectively. Finally, modifications of the antibody backbone after secretion may further impact antibody activity. An in-depth understanding of how these posttranslational modifications impact antibody function, especially in the context of individual antibody isotypes and subclasses, is only starting to emerge. Indeed, only a minute proportion of this natural variability in the humoral immune response is currently reflected in therapeutic antibody preparations. In this Review, we summarize recent insights into how IgG subclass and posttranslational modifications impact IgG activity and discuss how these insights may be used to optimize therapeutic antibody development.
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Affiliation(s)
- Falk Nimmerjahn
- Division of Genetics, Friedrich Alexander University Erlangen-Nürnberg, Erlangen, Germany.
| | - Gestur Vidarsson
- Immunoglobulin Research Laboratory, Department of Experimental Immunohematology, Sanquin Research, Amsterdam, the Netherlands
- Department of Biomolecular Mass Spectrometry and Proteomics, Utrecht Institute for Pharmaceutical Sciences and Bijvoet Center for Biomolecular Research, Utrecht University, Utrecht, the Netherlands
| | - Mark S Cragg
- Antibody and Vaccine Group, Centre for Cancer Immunology, School of Cancer Sciences, University of Southampton Faculty of Medicine, Southampton, UK
- Institute for Life Sciences, University of Southampton, Southampton, UK
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5
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Alhasan MM, Habazin S, Kahhaleh FG, Lauc G, Conrad ML, Novokmet M. Mouse milk immunoglobulin G Fc-linked N-glycosylation nano-LC-MS analysis in a model of vancomycin exposure during pregnancy. Anal Bioanal Chem 2023; 415:2239-2247. [PMID: 36914840 DOI: 10.1007/s00216-023-04635-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 02/14/2023] [Accepted: 02/17/2023] [Indexed: 03/16/2023]
Abstract
Breast milk immunoglobulin G (IgG) plays an important role in the transfer of passive immunity in early life and in shaping the neonatal immune system through N-glycan-mediated effector functions. Currently, there are no protocols available to analyze breast milk IgG-Fc glycosylation in mouse models. Therefore, we developed and validated a glycoproteomic workflow for the medium-throughput subclass-specific nano-LC-MS analysis of IgG enriched from small milk volumes of lactating mice. With the established methods, the IgG glycopatterns in a mouse model of antibiotic use during pregnancy and increased asthma susceptibility in the offspring were analyzed. Pregnant BALB/c mice were treated with vancomycin during gestation days 8-17 and IgG1F, IgG2, and IgG3-Fc glycosylation was subsequently analyzed in maternal serum, maternal breast milk, and offspring serum on postnatal day 15. The IgG glycosylation profiles of mouse maternal milk and serum revealed no significant differences within the glycoforms quantified across subclasses. However, vancomycin use during pregnancy was associated with changes in IgG-Fc glycosylation in offspring serum, shown by the decreased relative abundance of the IgG1F-G1 and IgG3-G0 glycoforms, together with the increased relative abundance of the IgG3-G2 and S1 glycoforms. The workflow presented will aid in the emerging integrative multi-omics- and glycomics-oriented milk analyses both in rodent models and human cohorts for a better understanding of mother-infant immunological interactions.
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Affiliation(s)
- Moumen M Alhasan
- Institute of Microbiology, Infectious Diseases and Immunology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität Zu Berlin, Berlin Institute of Health, Hindenburgdamm 30, 12203, Berlin, Germany
| | - Siniša Habazin
- Glycoscience Research Laboratory, Genos Ltd., Zagreb, Croatia
| | - Fariz G Kahhaleh
- Institute of Microbiology, Infectious Diseases and Immunology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität Zu Berlin, Berlin Institute of Health, Hindenburgdamm 30, 12203, Berlin, Germany
| | - Gordan Lauc
- Glycoscience Research Laboratory, Genos Ltd., Zagreb, Croatia
- Faculty of Pharmacy and Biochemistry, University of Zagreb, Zagreb, Croatia
| | - Melanie L Conrad
- Institute of Microbiology, Infectious Diseases and Immunology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität Zu Berlin, Berlin Institute of Health, Hindenburgdamm 30, 12203, Berlin, Germany.
| | - Mislav Novokmet
- Glycoscience Research Laboratory, Genos Ltd., Zagreb, Croatia.
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Harvey DJ. Analysis of carbohydrates and glycoconjugates by matrix-assisted laser desorption/ionization mass spectrometry: An update for 2017-2018. MASS SPECTROMETRY REVIEWS 2023; 42:227-431. [PMID: 34719822 DOI: 10.1002/mas.21721] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Revised: 07/26/2021] [Accepted: 07/26/2021] [Indexed: 06/13/2023]
Abstract
This review is the tenth update of the original article published in 1999 on the application of matrix-assisted laser desorption/ionization mass spectrometry (MALDI) mass spectrometry to the analysis of carbohydrates and glycoconjugates and brings coverage of the literature to the end of 2018. Also included are papers that describe methods appropriate to glycan and glycoprotein analysis by MALDI, such as sample preparation techniques, even though the ionization method is not MALDI. Topics covered in the first part of the review include general aspects such as theory of the MALDI process, new methods, matrices, derivatization, MALDI imaging, fragmentation and the use of arrays. The second part of the review is devoted to applications to various structural types such as oligo- and poly-saccharides, glycoproteins, glycolipids, glycosides, and biopharmaceuticals. Most of the applications are presented in tabular form. The third part of the review covers medical and industrial applications of the technique, studies of enzyme reactions, and applications to chemical synthesis. The reported work shows increasing use of combined new techniques such as ion mobility and highlights the impact that MALDI imaging is having across a range of diciplines. MALDI is still an ideal technique for carbohydrate analysis and advancements in the technique and the range of applications continue steady progress.
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Affiliation(s)
- David J Harvey
- Nuffield Department of Medicine, Target Discovery Institute, University of Oxford, Oxford, UK
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7
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Cain P, Huang L, Tang Y, Anguiano V, Feng Y. Impact of IgG subclass on monoclonal antibody developability. MAbs 2023; 15:2191302. [PMID: 36945111 PMCID: PMC10038059 DOI: 10.1080/19420862.2023.2191302] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/23/2023] Open
Abstract
IgG-based monoclonal antibody therapeutics, which are mainly IgG1, IgG2, and IgG4 subclasses or related variants, have dominated the biotherapeutics field for decades. Multiple laboratories have reported that the IgG subclasses possess different molecular characteristics that can affect their developability. For example, IgG1, the most popular IgG subclass for therapeutics, is known to have a characteristic degradation pathway related to its hinge fragility. However, there remains a paucity of studies that systematically evaluate the IgG subclasses on manufacturability and long-term stability. We thus conducted a systematic study of 12 mAbs derived from three sets of unrelated variable regions, each cloned into IgG1, an IgG1 variant with diminished effector functions, IgG2, and a stabilized IgG4 variant with further reduced FcγR interaction, to evaluate the impact of IgG subclass on manufacturability and high concentration stability in a common formulation buffer matrix. Our evaluation included Chinese hamster ovary cell productivity, host cell protein removal efficiency, N-linked glycan structure at the conserved N297 Fc position, solution appearance at high concentration, and aggregate growth, fragmentation, charge variant profile change, and post-translational modification upon thermal stress conditions or long-term storage at refrigerated temperature. Our results elucidated molecular attributes that are common to all IgG subclasses, as well as those that are unique to certain Fc domains, providing new insight into the effects of IgG subclass on antibody manufacturability and stability. These learnings can be used to enable a balanced decision on IgG subclass selection for therapeutic antibodies and aid in acceleration of their product development process.
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Affiliation(s)
- Paul Cain
- Biotechnology Discovery Research, Lilly Research Laboratories, Lilly Technology Center North, Indianapolis, IN, USA
| | - Lihua Huang
- Bioproduct Research & Development, Lilly Research Laboratories, Lilly Technology Center North, Indianapolis, IN, USA
| | - Yu Tang
- Pharmaceutical Development and Manufacturing, Syndax Pharmaceuticals, Waltham, MA, USA
| | - Victor Anguiano
- Bioproduct Research & Development, Lilly Research Laboratories, Lilly Technology Center North, Indianapolis, IN, USA
| | - Yiqing Feng
- Biotechnology Discovery Research, Lilly Research Laboratories, Lilly Technology Center North, Indianapolis, IN, USA
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8
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Glendenning LM, Zhou JY, Reynero KM, Cobb BA. Divergent Golgi trafficking limits B cell-mediated IgG sialylation. J Leukoc Biol 2022; 112:1555-1566. [PMID: 35726710 PMCID: PMC9701147 DOI: 10.1002/jlb.3ma0522-731r] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Revised: 05/19/2022] [Indexed: 01/04/2023] Open
Abstract
The degree of α2,6-linked sialylation on IgG glycans is associated with a variety of inflammatory conditions and is thought to drive IgG anti-inflammatory activity. Previous findings revealed that ablation of β-galactoside α2,6-sialyltransferase 1 (ST6Gal1) in B cells failed to alter IgG sialylation in vivo, yet resulted in the loss of B cell surface α2,6 sialylation, suggesting divergent pathways for IgG and cell surface glycoprotein glycosylation and trafficking. Employing both B cell hybridomas and ex vivo murine B cells, we discovered that IgG was poorly sialylated by ST6Gal1 and highly core fucosylated by α1,6-fucosyltransferase 8 (Fut8) in cell culture. In contrast, cell surface glycoproteins on IgG-producing cells showed the opposite pattern by flow cytometry, with high α2,6 sialylation and low α1,6 fucosylation. Paired studies further revealed that ex vivo B cell-produced IgG carried significantly less sialylation compared with IgG isolated from the plasma of matched animals, providing evidence that IgG sialylation increases after release in vivo. Finally, confocal analyses demonstrated that IgG poorly localized to subcellular compartments rich in sialylation and ST6Gal1, and strongly to regions rich in fucosylation and Fut8. These findings support a model in which IgG subcellular trafficking diverges from the canonical secretory pathway by promoting Fut8-mediated core fucosylation and limiting exposure to and modification by ST6Gal1, providing a mechanism for why B cell-expressed ST6Gal1 is dispensable for IgG sialylation in vivo.
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Affiliation(s)
- Leandre M. Glendenning
- Case Western Reserve University School of Medicine, Department of Pathology, Cleveland, OH 44106, USA
| | - Julie Y. Zhou
- Case Western Reserve University School of Medicine, Department of Pathology, Cleveland, OH 44106, USA
| | - Kalob M. Reynero
- Case Western Reserve University School of Medicine, Department of Pathology, Cleveland, OH 44106, USA
| | - Brian A. Cobb
- Case Western Reserve University School of Medicine, Department of Pathology, Cleveland, OH 44106, USA
- To whom correspondence should be sent
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9
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van Osch TLJ, Pongracz T, Geerdes DM, Mok JY, van Esch WJE, Voorberg J, Kapur R, Porcelijn L, Kerkhoffs JH, van der Meer PF, van der Schoot CE, de Haas M, Wuhrer M, Vidarsson G. Altered Fc glycosylation of anti-HLA alloantibodies in hemato-oncological patients receiving platelet transfusions. J Thromb Haemost 2022; 20:3011-3025. [PMID: 36165642 PMCID: PMC9828502 DOI: 10.1111/jth.15898] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 08/29/2022] [Accepted: 09/20/2022] [Indexed: 02/06/2023]
Abstract
BACKGROUND The formation of alloantibodies directed against class I human leukocyte antigens (HLA) continues to be a clinically challenging complication after platelet transfusions, which can lead to platelet refractoriness (PR) and occurs in approximately 5%-15% of patients with chronic platelet support. Interestingly, anti-HLA IgG levels in alloimmunized patients do not seem to predict PR, suggesting functional or qualitative differences among anti-HLA IgG. The binding of these alloantibodies to donor platelets can result in rapid clearance after transfusion, presumably via FcγR-mediated phagocytosis and/or complement activation, which both are affected by the IgG-Fc glycosylation. OBJECTIVES To characterize the Fc glycosylation profile of anti-HLA class I antibodies formed after platelet transfusion and to investigate its effect on clinical outcome. PATIENTS/METHODS We screened and captured anti-HLA class I antibodies (anti-HLA A2, anti-HLA A24, and anti-HLA B7) developed after platelet transfusions in hemato-oncology patients, who were included in the PREPAReS Trial. Using liquid chromatography-mass spectrometry, we analyzed the glycosylation profiles of total and anti-HLA IgG1 developed over time. Subsequently, the glycosylation data was linked to the patients' clinical information and posttransfusion increments. RESULTS The glycosylation profile of anti-HLA antibodies was highly variable between patients. In general, Fc galactosylation and sialylation levels were elevated compared to total plasma IgG, which correlated negatively with the platelet count increment. Furthermore, high levels of afucosylation were observed for two patients. CONCLUSIONS These differences in composition of anti-HLA Fc-glycosylation profiles could potentially explain the variation in clinical severity between patients.
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Affiliation(s)
- Thijs L. J. van Osch
- Immunoglobulin Research laboratory, Department of Experimental ImmunohematologySanquin ResearchAmsterdamThe Netherlands
- Department of Biomolecular Mass Spectrometry and ProteomicsUtrecht Institute for Pharmaceutical Sciences and Bijvoet Center for Biomolecular Research, Utrecht UniversityUtrechtThe Netherlands
| | - Tamas Pongracz
- Center for Proteomics and MetabolomicsLeiden University Medical CenterLeidenThe Netherlands
| | | | | | | | - Jan Voorberg
- Department of Molecular HematologyAmsterdam University Medical Center, University of AmsterdamAmsterdamThe Netherlands
| | - Rick Kapur
- Department of Experimental Immunohematology|Sanquin Research and Landsteiner Laboratory, Amsterdam University Medical Center, University of AmsterdamAmsterdamThe Netherlands
| | - Leendert Porcelijn
- Department of Immunohematology DiagnosticsSanquin Diagnostic ServicesAmsterdamThe Netherlands
| | - Jean‐Louis H. Kerkhoffs
- Department of Clinical Transfusion ResearchSanquin ResearchAmsterdamThe Netherlands
- Department of HematologyHaga Teaching HospitalThe HagueThe Netherlands
| | - Pieter F. van der Meer
- Department of HematologyHaga Teaching HospitalThe HagueThe Netherlands
- Department of ImmunologyLeiden University Medical CenterLeidenThe Netherlands
- Department of Product and Process DevelopmentSanquin Blood BankAmsterdamThe Netherlands
| | - C. Ellen van der Schoot
- Department of Experimental Immunohematology|Sanquin Research and Landsteiner Laboratory, Amsterdam University Medical Center, University of AmsterdamAmsterdamThe Netherlands
| | - Masja de Haas
- Department of Immunohematology DiagnosticsSanquin Diagnostic ServicesAmsterdamThe Netherlands
- Department of Clinical Transfusion ResearchSanquin ResearchAmsterdamThe Netherlands
- Departement of HematologyLeiden University Medical CenterLeidenThe Netherlands
| | - Manfred Wuhrer
- Center for Proteomics and MetabolomicsLeiden University Medical CenterLeidenThe Netherlands
| | - Gestur Vidarsson
- Immunoglobulin Research laboratory, Department of Experimental ImmunohematologySanquin ResearchAmsterdamThe Netherlands
- Department of Biomolecular Mass Spectrometry and ProteomicsUtrecht Institute for Pharmaceutical Sciences and Bijvoet Center for Biomolecular Research, Utrecht UniversityUtrechtThe Netherlands
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10
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Bharadwaj P, Shrestha S, Pongracz T, Concetta C, Sharma S, Le Moine A, de Haan N, Murakami N, Riella LV, Holovska V, Wuhrer M, Marchant A, Ackerman ME. Afucosylation of HLA-specific IgG1 as a potential predictor of antibody pathogenicity in kidney transplantation. Cell Rep Med 2022; 3:100818. [PMID: 36384101 PMCID: PMC9729883 DOI: 10.1016/j.xcrm.2022.100818] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 08/23/2022] [Accepted: 10/17/2022] [Indexed: 11/17/2022]
Abstract
Antibody-mediated rejection (AMR) is the leading cause of graft failure. While donor-specific antibodies (DSAs) are associated with a higher risk of AMR, not all patients with DSAs develop rejection, suggesting that the characteristics of alloantibodies determining their pathogenicity remain undefined. Using human leukocyte antigen (HLA)-A2-specific antibodies as a model, we apply systems serology tools to investigate qualitative features of immunoglobulin G (IgG) alloantibodies including Fc-glycosylation patterns and FcγR-binding properties. Levels of afucosylated anti-A2 antibodies are elevated in seropositive patients, especially those with AMR, suggesting potential cytotoxicity via FcγRIII-mediated mechanisms. Afucosylation of both glycoengineered monoclonal and naturally glycovariant polyclonal serum IgG specific to HLA-A2 drives potentiated binding to, slower dissociation from, and enhanced signaling through FcγRIII, a receptor widely expressed on innate effector cells, and greater cytotoxicity against HLA-A2+ cells mediated by natural killer (NK) cells. Collectively, these results suggest that afucosylated DSA may be a biomarker of AMR and contribute to pathogenesis.
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Affiliation(s)
- Pranay Bharadwaj
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Dartmouth College, Hanover, NH 03755, USA
| | - Sweta Shrestha
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Dartmouth College, Hanover, NH 03755, USA
| | - Tamas Pongracz
- Center for Proteomics and Metabolomics, Leiden University Medical Center, Leiden, the Netherlands
| | - Catalano Concetta
- Institute for Medical Immunology, Université Libre de Bruxelles, Charleroi, Belgium; Department of Nephrology, Dialysis and Renal Transplantation, Hôpital Erasme, Université libre de Bruxelles, Bruxelles, Belgium
| | - Shilpee Sharma
- Institute for Medical Immunology, Université Libre de Bruxelles, Charleroi, Belgium
| | - Alain Le Moine
- Department of Nephrology, Dialysis and Renal Transplantation, Hôpital Erasme, Université libre de Bruxelles, Bruxelles, Belgium
| | - Noortje de Haan
- Center for Proteomics and Metabolomics, Leiden University Medical Center, Leiden, the Netherlands
| | - Naoka Murakami
- Renal Division, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Leonardo V Riella
- Division of Nephrology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA; Center for Transplantation Sciences, Department of Surgery, Massachusetts General Hospital, Boston, MA, USA
| | - Vanda Holovska
- HLA Laboratory, Laboratoire Hospitalier Universitaire de Bruxelles (LHUB), Hôpital Erasme ULB, Brussels, Belgium
| | - Manfred Wuhrer
- Center for Proteomics and Metabolomics, Leiden University Medical Center, Leiden, the Netherlands
| | - Arnaud Marchant
- Institute for Medical Immunology, Université Libre de Bruxelles, Charleroi, Belgium
| | - Margaret E Ackerman
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Dartmouth College, Hanover, NH 03755, USA; Thayer School of Engineering, Dartmouth College, Hanover, NH 03755, USA.
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11
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Sha J, Fan J, Zhang R, Gu Y, Xu X, Ren S, Gu J. B-cell-specific ablation of β-1,4-galactosyltransferase 1 prevents aging-related IgG glycans changes and improves aging phenotype in mice. J Proteomics 2022; 268:104717. [PMID: 36084919 DOI: 10.1016/j.jprot.2022.104717] [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: 05/11/2022] [Revised: 08/16/2022] [Accepted: 08/25/2022] [Indexed: 10/14/2022]
Abstract
IgG N-glycans levels change with advancing age, making it a potential biomarker of aging. β-1,4-galactosyltransferase (B4GALT) gene expression levels also increase with aging. Ultra performance liquid chromatography (UPLC) was used to examine changes inserum IgG N-glycans at six time points during the aging process. Most serum IgG N-glycans changed with aging in WT but not in CD19-cre B4GALT1 floxed mice. The relative abundance of fucosylated biantennary glycans with or without Neu5Gc structures changed with aging in heterozygous B4GALT1 floxed mice but not in homozygous B4GALT1 floxed mice. Additionally, the aging phenotype was more apparent in WT mice than in B4GALT1 floxed mice. These results demonstrate that fucosylated biantennary glycans and fucosylated biantennary glycans containing N-glycolylneuraminic acid (Neu5Gc)-linked N-acetyllactosamine (LacNAc) were highly associated with aging and were affected by the B4GALT1 floxed mouse genotype. The changing levels of fucosylated monoantennary glycans observed with aging in WT mice was reversed in B4GALT1 floxed mice and was not sex specific. In summary, B-cell-specific ablation of B4GALT1 from a glycoproteomic perspective prevented age-related changes in IgG N-glycans in mice. SIGNIFICANCE: In this study, serum IgG glycoproteomic data in wild-type (WT) and B-cell-specific ablation of β-1,4-galactosyltransferase 1 mice (B4GALT) were analyzed. Results showed that fucosylated biantennary glycans with or without N-glycolylneuraminic acid (Neu5Gc)-linked N-acetyllactosamine (LacNAc) were highly associated with aging and were also affected by the B4GALT1 floxed mouse genotype. In terms of gender-specific information, the trend towards elevated fucosylated monoantennary glycans in WT mice was not seen in CD19-cre B4GALT1 floxed mice in either sex. B-cell-specific ablation of B4GALT1 plays an important role in age-related glycan changes; its specific functions and mechanisms are worthy of in-depth study. Our data suggest that investigating the relationship between galactosylation and aging may help advance the field of glycoproteomics and aging research.
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Affiliation(s)
- Jichen Sha
- NHC Key Laboratory of Glycoconjugates Research, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, 130 Dongan Road, Shanghai 200032, China
| | - Jiteng Fan
- NHC Key Laboratory of Glycoconjugates Research, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, 130 Dongan Road, Shanghai 200032, China
| | - Rongrong Zhang
- NHC Key Laboratory of Glycoconjugates Research, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, 130 Dongan Road, Shanghai 200032, China
| | - Yong Gu
- NHC Key Laboratory of Glycoconjugates Research, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, 130 Dongan Road, Shanghai 200032, China
| | - Xiaoyan Xu
- NHC Key Laboratory of Glycoconjugates Research, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, 130 Dongan Road, Shanghai 200032, China
| | - Shifang Ren
- NHC Key Laboratory of Glycoconjugates Research, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, 130 Dongan Road, Shanghai 200032, China.
| | - Jianxin Gu
- NHC Key Laboratory of Glycoconjugates Research, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, 130 Dongan Road, Shanghai 200032, China.
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12
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Oosterhoff JJ, Larsen MD, van der Schoot CE, Vidarsson G. Afucosylated IgG responses in humans - structural clues to the regulation of humoral immunity. Trends Immunol 2022; 43:800-814. [PMID: 36008258 PMCID: PMC9395167 DOI: 10.1016/j.it.2022.08.001] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 08/02/2022] [Accepted: 08/05/2022] [Indexed: 11/30/2022]
Abstract
Healthy immune responses require efficient protection without excessive inflammation. Recent discoveries on the degree of fucosylation of a human N-linked glycan at a conserved site in the immunoglobulin IgG-Fc domain might add an additional regulatory layer to adaptive humoral immunity. Specifically, afucosylation of IgG-Fc enhances the interaction of IgG with FcγRIII and thereby its activity. Although plasma IgG is generally fucosylated, afucosylated IgG is raised in responses to enveloped viruses and Plasmodium falciparum proteins expressed on infected erythrocytes, as well as during alloimmune responses. Moreover, while afucosylation can exacerbate some infectious diseases (e.g., COVID-19), it also correlates with traits of protective immunity against malaria and HIV-1. Herein we discuss the implications of IgG afucosylation for health and disease, as well as for vaccination.
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Affiliation(s)
- Janita J Oosterhoff
- Immunoglobulin Research Laboratory, Department of Experimental Immunohematology, Sanquin Research, Amsterdam, The Netherlands; Department of Biomolecular Mass Spectrometry and Proteomics, Utrecht Institute for Pharmaceutical Sciences and Bijvoet Center for Biomolecular Research, Utrecht University, Utrecht, The Netherlands
| | - Mads Delbo Larsen
- Immunoglobulin Research Laboratory, Department of Experimental Immunohematology, Sanquin Research, Amsterdam, The Netherlands; Department of Biomolecular Mass Spectrometry and Proteomics, Utrecht Institute for Pharmaceutical Sciences and Bijvoet Center for Biomolecular Research, Utrecht University, Utrecht, The Netherlands
| | - C Ellen van der Schoot
- Immunoglobulin Research Laboratory, Department of Experimental Immunohematology, Sanquin Research, Amsterdam, The Netherlands; Landsteiner Laboratory, Amsterdam University Medical Center (UMC), University of Amsterdam, Amsterdam, The Netherlands
| | - Gestur Vidarsson
- Immunoglobulin Research Laboratory, Department of Experimental Immunohematology, Sanquin Research, Amsterdam, The Netherlands; Department of Biomolecular Mass Spectrometry and Proteomics, Utrecht Institute for Pharmaceutical Sciences and Bijvoet Center for Biomolecular Research, Utrecht University, Utrecht, The Netherlands.
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13
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Evaluation of Phage Display Biopanning Strategies for the Selection of Anti-Cell Surface Receptor Antibodies. Int J Mol Sci 2022; 23:ijms23158470. [PMID: 35955604 PMCID: PMC9369378 DOI: 10.3390/ijms23158470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 07/28/2022] [Accepted: 07/28/2022] [Indexed: 12/04/2022] Open
Abstract
Monoclonal antibodies (mAbs) are one of the most successful and versatile protein-based pharmaceutical products used to treat multiple pathological conditions. The remarkable specificity of mAbs and their affinity for biological targets has led to the implementation of mAbs in the therapeutic regime of oncogenic, chronic inflammatory, cardiovascular, and infectious diseases. Thus, the discovery of novel mAbs with defined functional activities is of crucial importance to expand our ability to address current and future clinical challenges. In vitro, antigen-driven affinity selection employing phage display biopanning is a commonly used technique to isolate mAbs. The success of biopanning is dependent on the quality and the presentation format of the antigen, which is critical when isolating mAbs against membrane protein targets. Here, we provide a comprehensive investigation of two established panning strategies, surface-tethering of a recombinant extracellular domain and cell-based biopanning, to examine the impact of antigen presentation on selection outcomes with regards to the isolation of positive mAbs with functional potential against a proof-of-concept type I cell surface receptor. Based on the higher sequence diversity of the resulting antibody repertoire, presentation of a type I membrane protein in soluble form was more advantageous over presentation in cell-based format. Our results will contribute to inform and guide future antibody discovery campaigns against cell surface proteins.
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14
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Oswald DM, Lehoux SD, Zhou JY, Glendenning LM, Cummings RD, Cobb BA. ST6Gal1 in plasma is dispensable for IgG sialylation. Glycobiology 2022; 32:803-813. [PMID: 35746897 DOI: 10.1093/glycob/cwac039] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 06/08/2022] [Accepted: 06/13/2022] [Indexed: 11/13/2022] Open
Abstract
The glycosylation of IgG has attracted increased attention due to the impact of N-glycan modifications at N297 on IgG function, acting primarily through modulation of Fc domain conformation and Fcγ receptor binding affinities and signaling. However, the mechanisms regulating IgG glycosylation and especially α2,6-sialylation of its N-glycan remain poorly understood. We observed previously that IgG is normally sialylated in mice with B cells lacking the sialyltransferase ST6Gal1. This supported the hypothesis that IgG may be sialylated outside of B cells, perhaps through the action of hepatocyte-released plasma ST6Gal1. Here we demonstrate that this model is incorrect. Animals lacking hepatocyte expressed ST6Gal1 retain normal IgG α2,6-sialylation, despite the lack of detectable ST6Gal1 in plasma. Moreover, we confirmed that B cells were not a redundant source of IgG sialylation. Thus, while α2,6-sialylation is lacking in IgG from mice with germline ablation of ST6Gal1, IgG α2,6-sialylation is normal in mice lacking ST6Gal1 in either hepatocytes or B cells. These results indicate that IgG α2,6-sialylation arises after release from a B cell, but is not dependent on plasma-localized ST6Gal1 activity.
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Affiliation(s)
- Douglas M Oswald
- Case Western Reserve University School of Medicine, Department of Pathology, Cleveland, OH, USA
| | - Sylvain D Lehoux
- Beth Israel Deaconess Medical Center, Harvard Medical School Center for Glycoscience, National Center for Functional Glycomics, Boston, MA, USA
| | - Julie Y Zhou
- Case Western Reserve University School of Medicine, Department of Pathology, Cleveland, OH, USA
| | - Leandre M Glendenning
- Case Western Reserve University School of Medicine, Department of Pathology, Cleveland, OH, USA
| | - Richard D Cummings
- Beth Israel Deaconess Medical Center, Harvard Medical School Center for Glycoscience, National Center for Functional Glycomics, Boston, MA, USA
| | - Brian A Cobb
- Case Western Reserve University School of Medicine, Department of Pathology, Cleveland, OH, USA
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15
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Determination of IgG1 and IgG3 SARS-CoV-2 Spike Protein and Nucleocapsid Binding-Who Is Binding Who and Why? Int J Mol Sci 2022; 23:ijms23116050. [PMID: 35682724 PMCID: PMC9181569 DOI: 10.3390/ijms23116050] [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: 03/18/2022] [Revised: 05/24/2022] [Accepted: 05/25/2022] [Indexed: 12/11/2022] Open
Abstract
The involvement of immunoglobulin (Ig) G3 in the humoral immune response to SARS-CoV-2 infection has been implicated in the pathogenesis of acute respiratory distress syndrome (ARDS) in COVID-19. The exact molecular mechanism is unknown, but it is thought to involve this IgG subtype’s differential ability to fix, complement and stimulate cytokine release. We examined the binding of convalescent patient antibodies to immobilized nucleocapsids and spike proteins by matrix-assisted laser desorption/ionization–time of flight (MALDI-ToF) mass spectrometry. IgG3 was a major immunoglobulin found in all samples. Differential analysis of the spectral signatures found for the nucleocapsid versus the spike protein demonstrated that the predominant humoral immune response to the nucleocapsid was IgG3, whilst for the spike protein it was IgG1. However, the spike protein displayed a strong affinity for IgG3 itself, as it would bind from control plasma samples, as well as from those previously infected with SARS-CoV-2, similar to the way protein G binds IgG1. Furthermore, detailed spectral analysis indicated that a mass shift consistent with hyper-glycosylation or glycation was a characteristic of the IgG3 captured by the spike protein.
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16
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Carpenter SM, Lu LL. Leveraging Antibody, B Cell and Fc Receptor Interactions to Understand Heterogeneous Immune Responses in Tuberculosis. Front Immunol 2022; 13:830482. [PMID: 35371092 PMCID: PMC8968866 DOI: 10.3389/fimmu.2022.830482] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Accepted: 02/07/2022] [Indexed: 12/25/2022] Open
Abstract
Despite over a century of research, Mycobacterium tuberculosis (Mtb), the causative agent of tuberculosis (TB), continues to kill 1.5 million people annually. Though less than 10% of infected individuals develop active disease, the specific host immune responses that lead to Mtb transmission and death, as well as those that are protective, are not yet fully defined. Recent immune correlative studies demonstrate that the spectrum of infection and disease is more heterogenous than has been classically defined. Moreover, emerging translational and animal model data attribute a diverse immune repertoire to TB outcomes. Thus, protective and detrimental immune responses to Mtb likely encompass a framework that is broader than T helper type 1 (Th1) immunity. Antibodies, Fc receptor interactions and B cells are underexplored host responses to Mtb. Poised at the interface of initial bacterial host interactions and in granulomatous lesions, antibodies and Fc receptors expressed on macrophages, neutrophils, dendritic cells, natural killer cells, T and B cells have the potential to influence local and systemic adaptive immune responses. Broadening the paradigm of protective immunity will offer new paths to improve diagnostics and vaccines to reduce the morbidity and mortality of TB.
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Affiliation(s)
- Stephen M. Carpenter
- Division of Infectious Disease and HIV Medicine, Department of Medicine, Case Western Reserve University, Cleveland, OH, United States
- Cleveland Medical Center, University Hospitals Cleveland Medical Center, Cleveland, OH, United States
| | - Lenette L. Lu
- Division of Geographic Medicine and Infectious Diseases, Department of Internal Medicine, UT Southwestern Medical Center, Dallas, TX, United States
- Department of Immunology, UT Southwestern Medical Center, Dallas, TX, United States
- Parkland Health and Hospital System, Dallas, TX, United States
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17
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Wang T, Liu L, Voglmeir J. mAbs N-glycosylation: Implications for biotechnology and analytics. Carbohydr Res 2022; 514:108541. [DOI: 10.1016/j.carres.2022.108541] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2021] [Revised: 03/03/2022] [Accepted: 03/07/2022] [Indexed: 12/29/2022]
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18
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Soprano LL, Ferrero MR, Landoni M, García GA, Esteva MI, Couto AS, Duschak VG. Cruzipain Sulfotopes-Specific Antibodies Generate Cardiac Tissue Abnormalities and Favor Trypanosoma cruzi Infection in the BALB/c Mice Model of Experimental Chagas Disease. Front Cell Infect Microbiol 2022; 11:814276. [PMID: 35059328 PMCID: PMC8763857 DOI: 10.3389/fcimb.2021.814276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2021] [Accepted: 12/07/2021] [Indexed: 11/13/2022] Open
Abstract
Trypanosoma cruzi cruzipain (Cz) bears a C-terminal domain (C-T) that contains sulfated epitopes “sulfotopes” (GlcNAc6S) on its unique N-glycosylation site. The effects of in vivo exposure to GlcNAc6S on heart tissue ultrastructure, immune responses, and along the outcome of infection by T. cruzi, were evaluated in a murine experimental model, BALB/c, using three independent strategies. First, mice were pre-exposed to C-T by immunization. C-T-immunized mice (C-TIM) showed IgG2a/IgG1 <1, induced the production of cytokines from Th2, Th17, and Th1 profiles with respect to those of dC-TIM, which only induced IL-10 respect to the control mice. Surprisingly, after sublethal challenge, both C-TIM and dC-TIM showed significantly higher parasitemia and mortality than the control group. Second, mice exposed to BSA-GlcNAc6S as immunogen (BSA-GlcNAc6SIM) showed: severe ultrastructural cardiac alterations while BSA-GlcNAcIM conserved the regular tissue architecture with slight myofibril changes; a strong highly specific humoral-immune-response reproducing the IgG-isotype-profile obtained with C-TIM; and a significant memory-T-cell-response demonstrating sulfotope-immunodominance with respect to BSA-GlcNAcIM. After sublethal challenge, BSA-GlcNAc6SIM showed exacerbated parasitemias, despite elevated IFN-γ levels were registered. In both cases, the abrogation of ultrastructural alterations when using desulfated immunogens supported the direct involvement of sulfotopes and/or indirect effect through their specific antibodies, in the induction of tissue damage. Finally, a third strategy using a passive transference of sulfotope-specific antibodies (IgG-GlcNAc6S) showed the detrimental activity of IgG-GlcNAc6S on mice cardiac tissue, and mice treated with IgG-GlcNAc6S after a sublethal dose of T. cruzi, surprisingly reached higher parasitemias than control groups. These findings confirmed the indirect role of the sulfotopes, via their IgG-GlcNAc6S, both in the immunopathogenicity as well as favoring T. cruzi infection.
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Affiliation(s)
- Luciana L Soprano
- Area of Biochemistry of Proteins and Glycobiology of Parasites, Research Department, National Institute of Parasitology "Dr. Mario Fatala Chaben", ANLIS-Malbrán, Health Department, Ciudad Autónoma de Buenos Aires (CABA, 1063), Buenos Aires, Argentina
| | - Maximiliano R Ferrero
- Area of Biochemistry of Proteins and Glycobiology of Parasites, Research Department, National Institute of Parasitology "Dr. Mario Fatala Chaben", ANLIS-Malbrán, Health Department, Ciudad Autónoma de Buenos Aires (CABA, 1063), Buenos Aires, Argentina
| | - Malena Landoni
- Organic Chemistry Department, Natural and Exact Sciences Faculty; Research Center in Carbohydrates (CIHIDECAR), University of Buenos Aires, Buenos Aires, Argentina.,Ministry of Science, Technology and Innovation, National Council of Scientific and Technical Research (CONICET), Buenos Aires, Argentina
| | - Gabriela A García
- Area of Biochemistry of Proteins and Glycobiology of Parasites, Research Department, National Institute of Parasitology "Dr. Mario Fatala Chaben", ANLIS-Malbrán, Health Department, Ciudad Autónoma de Buenos Aires (CABA, 1063), Buenos Aires, Argentina.,Ministry of Science, Technology and Innovation, National Council of Scientific and Technical Research (CONICET), Buenos Aires, Argentina
| | - Mónica I Esteva
- Area of Biochemistry of Proteins and Glycobiology of Parasites, Research Department, National Institute of Parasitology "Dr. Mario Fatala Chaben", ANLIS-Malbrán, Health Department, Ciudad Autónoma de Buenos Aires (CABA, 1063), Buenos Aires, Argentina
| | - Alicia S Couto
- Organic Chemistry Department, Natural and Exact Sciences Faculty; Research Center in Carbohydrates (CIHIDECAR), University of Buenos Aires, Buenos Aires, Argentina.,Ministry of Science, Technology and Innovation, National Council of Scientific and Technical Research (CONICET), Buenos Aires, Argentina
| | - Vilma G Duschak
- Area of Biochemistry of Proteins and Glycobiology of Parasites, Research Department, National Institute of Parasitology "Dr. Mario Fatala Chaben", ANLIS-Malbrán, Health Department, Ciudad Autónoma de Buenos Aires (CABA, 1063), Buenos Aires, Argentina.,Ministry of Science, Technology and Innovation, National Council of Scientific and Technical Research (CONICET), Buenos Aires, Argentina
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19
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High-throughput rat immunoglobulin G N-glycosylation profiling revealed subclass-specific changes associated with chronic stress. J Proteomics 2021; 245:104293. [PMID: 34118474 DOI: 10.1016/j.jprot.2021.104293] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 05/03/2021] [Accepted: 05/26/2021] [Indexed: 12/31/2022]
Abstract
Immunoglobulin G (IgG) glycosylation corresponds well with immune system changes, so it can potentially be used as a biomarker for the consequences of chronic stress such as low-grade inflammation and enhanced immunosenescence in older animals. Here we present a high-throughput glycoproteomic workflow, including IgG enrichment, HILIC glycopeptide purification, and nano-LC-MS analysis of tryptic glycopeptides applied for the analysis of rat IgG. A cohort of 80 animals was exposed to seven stressors in a customized chronic stress protocol with blood and tissue sampling in three timepoints. Young female rats experienced an increase in agalactosylated glycoforms on IgG2a and IgG2c accompanied by a decrease in monogalactosylation. Among old females, increased galactosylation was observed in the IgG2b subclass, pointing to an anti-inflammatory activity of IgG. Additionally, IgG Fc N-glycosylation patterns in Sprague Dawley rats were analyzed, quantified, and reported for the first time. Our findings emphasize age-, sex- and subclass-dependent differences in IgG glycosylation related to chronic stress exposure, confirming the relevance of newly developed methods for further research in glycobiology of rodent immune response. SIGNIFICANCE: In this study, we showed that a high-throughput streamlined methodology based on protein L 96-well monolithic plates for efficient rat IgG immunoaffinity enrichment from blood plasma, paired with appropriate tryptic glycopeptide preparation, HILIC-SPE enrichment, and nano-LC-MS methods was suitable for quick processing of large sample sets. We report a subclass-specific profiling and changes in rat IgG Fc galactosylation and adrenal gland immunohistochemistry of male and female animals exposed to a customized chronic stress protocol.
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20
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Singh S, Thompson JA, Yilmaz B, Li H, Weis S, Sobral D, Truglio M, Aires da Silva F, Aguiar S, Carlos AR, Rebelo S, Cardoso S, Gjini E, Nuñez G, Soares MP. Loss of α-gal during primate evolution enhanced antibody-effector function and resistance to bacterial sepsis. Cell Host Microbe 2021; 29:347-361.e12. [DOI: 10.1016/j.chom.2020.12.017] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 11/17/2020] [Accepted: 12/22/2020] [Indexed: 12/29/2022]
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21
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Nimmerjahn F, Werner A. Sweet Rules: Linking Glycosylation to Antibody Function. EXPERIENTIA SUPPLEMENTUM (2012) 2021; 112:365-393. [PMID: 34687017 DOI: 10.1007/978-3-030-76912-3_12] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Antibodies produced upon infections with pathogenic microorganisms are essential for clearing primary infections and for providing the host with long-lasting immunity. Moreover, antibodies have become the most widely used platform for developing novel therapies against cancer and autoimmunity, requiring an in-depth understanding of how antibodies mediate their activity in vivo and which factors modulate pro- or anti-inflammatory antibody activities. Since the discovery that select residues present in the sugar domain attached to the immunoglobulin G (IgG) fragment crystallizable (Fc) region can modulate both, pro- and anti-inflammatory effector functions, a wealth of studies has focused on understanding how IgG glycosylation is regulated and how this knowledge can be used to optimize therapeutic antibody activity. With the introduction of glycoengineered afucosylated antibodies in cancer therapy and the initiation of clinical testing of highly sialylated anti-inflammatory antibodies the proof-of-concept that understanding antibody glycosylation can lead to clinical innovation has been provided. The focus of this review is to summarize recent insights into how antibody glycosylation is regulated in vivo and how select sugar residues impact IgG function.
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Affiliation(s)
- Falk Nimmerjahn
- Chair of Genetics, Department of Biology, Institute of Genetics, University of Erlangen-Nürnberg, Erlangen, Germany.
- Medical Immunology Campus Erlangen, Erlangen, Germany.
| | - Anja Werner
- Chair of Genetics, Department of Biology, Institute of Genetics, University of Erlangen-Nürnberg, Erlangen, Germany
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22
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Petrović T, Trbojević-Akmačić I. Lectin and Liquid Chromatography-Based Methods for Immunoglobulin (G) Glycosylation Analysis. EXPERIENTIA SUPPLEMENTUM (2012) 2021; 112:29-72. [PMID: 34687007 DOI: 10.1007/978-3-030-76912-3_2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Immunoglobulin (Ig) glycosylation has been shown to dramatically affect its structure and effector functions. Ig glycosylation changes have been associated with different diseases and show a promising biomarker potential for diagnosis and prognosis of disease advancement. On the other hand, therapeutic biomolecules based on structural and functional features of Igs demand stringent quality control during the production process to ensure their safety and efficacy. Liquid chromatography (LC) and lectin-based methods are routinely used in Ig glycosylation analysis complementary to other analytical methods, e.g., mass spectrometry and capillary electrophoresis. This chapter covers analytical approaches based on LC and lectins used in low- and high-throughput N- and O-glycosylation analysis of Igs, with the focus on immunoglobulin G (IgG) applications. General principles and practical examples of the most often used LC methods for Ig purification are described, together with typical workflows for N- and O-glycan analysis on the level of free glycans, glycopeptides, subunits, or intact Igs. Lectin chromatography is a historical approach for the analysis of lectin-carbohydrate interactions and glycoprotein purification but is still being used as a valuable tool in Igs purification and glycan analysis. On the other hand, lectin microarrays have found their application in the rapid screening of glycan profiles on intact proteins.
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Affiliation(s)
- Tea Petrović
- Glycoscience Research Laboratory, Genos Ltd., Zagreb, Croatia
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23
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Frkatovic A, Zaytseva OO, Klaric L. Genetic Regulation of Immunoglobulin G Glycosylation. EXPERIENTIA SUPPLEMENTUM (2012) 2021; 112:259-287. [PMID: 34687013 DOI: 10.1007/978-3-030-76912-3_8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Defining the genetic components that control glycosylation of the human immunoglobulin G (IgG) is an ongoing effort, which has so far been addressed by means of heritability, linkage and genome-wide association studies (GWAS). Unlike the synthesis of proteins, N-glycosylation biosynthesis is not a template-driven process, but rather a complex process regulated by both genetic and environmental factors. Current heritability studies have shown that while up to 75% of the variation in levels of some IgG glycan traits can be explained by genetics, some glycan traits are completely defined by environmental influences. Advances in both high-throughput genotyping and glycan quantification methods have enabled genome-wide association studies that are increasingly used to estimate associations of millions of single-nucleotide polymorphisms and glycosylation traits. Using this method, 18 genomic regions have so far been robustly associated with IgG N-glycosylation, discovering associations with genes encoding glycosyltransferases, but also transcription factors, co-factors, membrane transporters and other genes with no apparent role in IgG glycosylation. Further computational analyses have shown that IgG glycosylation is likely to be regulated through the expression of glycosyltransferases, but have also for the first time suggested which transcription factors are involved in the process. Moreover, it was also shown that IgG glycosylation and inflammatory diseases share common underlying causal genetic variants, suggesting that studying genetic regulation of IgG glycosylation helps not only to better understand this complex process but can also contribute to understanding why glycans are changed in disease. However, further studies are needed to unravel whether changes in IgG glycosylation are causing these diseases or the changes in the glycome are caused by the disease.
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Affiliation(s)
- Azra Frkatovic
- Glycoscience Research Laboratory, Genos Ltd., Zagreb, Croatia
| | - Olga O Zaytseva
- Glycoscience Research Laboratory, Genos Ltd., Zagreb, Croatia
| | - Lucija Klaric
- MRC Human Genetics Unit, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh, UK.
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Abstract
Human lifespan has increased significantly in the last 200 years, emphasizing our need to age healthily. Insights into molecular mechanisms of aging might allow us to slow down its rate or even revert it. Similar to aging, glycosylation is regulated by an intricate interplay of genetic and environmental factors. The dynamics of glycopattern variation during aging has been mostly explored for plasma/serum and immunoglobulin G (IgG) N-glycome, as we describe thoroughly in this chapter. In addition, we discuss the potential functional role of agalactosylated IgG glycans in aging, through modulation of inflammation level, as proposed by the concept of inflammaging. We also comment on the potential to use the plasma/serum and IgG N-glycome as a biomarker of healthy aging and on the interventions that modulate the IgG glycopattern. Finally, we discuss the current knowledge about animal models for human plasma/serum and IgG glycosylation and mention other, less explored, instances of glycopattern changes during organismal aging and cellular senescence.
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25
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de Haan N, Falck D, Wuhrer M. Monitoring of immunoglobulin N- and O-glycosylation in health and disease. Glycobiology 2020; 30:226-240. [PMID: 31281930 PMCID: PMC7225405 DOI: 10.1093/glycob/cwz048] [Citation(s) in RCA: 60] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 07/02/2019] [Accepted: 07/03/2019] [Indexed: 12/11/2022] Open
Abstract
Protein N- and O-glycosylation are well known co- and post-translational modifications of immunoglobulins. Antibody glycosylation on the Fab and Fc portion is known to influence antigen binding and effector functions, respectively. To study associations between antibody glycosylation profiles and (patho) physiological states as well as antibody functionality, advanced technologies and methods are required. In-depth structural characterization of antibody glycosylation usually relies on the separation and tandem mass spectrometric (MS) analysis of released glycans. Protein- and site-specific information, on the other hand, may be obtained by the MS analysis of glycopeptides. With the development of high-resolution mass spectrometers, antibody glycosylation analysis at the intact or middle-up level has gained more interest, providing an integrated view of different post-translational modifications (including glycosylation). Alongside the in-depth methods, there is also great interest in robust, high-throughput techniques for routine glycosylation profiling in biopharma and clinical laboratories. With an emphasis on IgG Fc glycosylation, several highly robust separation-based techniques are employed for this purpose. In this review, we describe recent advances in MS methods, separation techniques and orthogonal approaches for the characterization of immunoglobulin glycosylation in different settings. We put emphasis on the current status and expected developments of antibody glycosylation analysis in biomedical, biopharmaceutical and clinical research.
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Affiliation(s)
- Noortje de Haan
- Center for Proteomics and Metabolomics, Leiden University Medical Center, Albinusdreef 2, 2333ZA Leiden, The Netherlands
| | - David Falck
- Center for Proteomics and Metabolomics, Leiden University Medical Center, Albinusdreef 2, 2333ZA Leiden, The Netherlands
| | - Manfred Wuhrer
- Center for Proteomics and Metabolomics, Leiden University Medical Center, Albinusdreef 2, 2333ZA Leiden, The Netherlands
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26
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Patenaude AM, Erhardt J, Hennig R, Rapp E, Lauc G, Pezer M. N-glycosylation analysis of mouse immunoglobulin G isolated from dried blood spots. Electrophoresis 2020; 42:2615-2618. [PMID: 33165939 DOI: 10.1002/elps.202000249] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 10/16/2020] [Accepted: 11/02/2020] [Indexed: 11/10/2022]
Abstract
The association of immunoglobulin G (IgG) glycosylation changes with various human diseases and physiological conditions is well established. Since the mechanistical explanation of the regulation of IgG glycosylation and its functional role in these various states is still missing, the eyes of the biomedical community are now turned towards animal models, which enable intervention studies necessary for conclusions on causality. Mice are recognized and used as a good experimental model for human IgG glycosylation. However, smaller blood volumes, low IgG concentrations at young ages (which are most often used in mice experiments) and multiple sampling protocols during the course of longitudinal studies would profit from a robust workflow for mouse IgG glycome analysis from minute amounts of starting material, collected through a simple sampling procedure. For this purpose, we have developed a protocol for analysis of total N-glycans of IgG isolated from mouse dried blood spots (DBS), which we report here. We show that mouse DBS are a good source of material for IgG N-glycan analysis by multiplexed capillary gel electrophoresis with laser-induced fluorescence (xCGE-LIF).
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Affiliation(s)
| | - Julija Erhardt
- Faculty of Science, University of Zagreb, Zagreb, Croatia
| | | | - Erdmann Rapp
- glyXera GmbH, Magdeburg, Germany.,Max Planck Institute for Dynamics of Complex Technical Systems, Magdeburg, Germany
| | - Gordan Lauc
- Genos Glycoscience Research Laboratory, Zagreb, Croatia.,Faculty of Pharmacy and Biochemistry, University of Zagreb, Zagreb, Croatia
| | - Marija Pezer
- Genos Glycoscience Research Laboratory, Zagreb, Croatia
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27
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Blöchl C, Regl C, Huber CG, Winter P, Weiss R, Wohlschlager T. Towards middle-up analysis of polyclonal antibodies: subclass-specific N-glycosylation profiling of murine immunoglobulin G (IgG) by means of HPLC-MS. Sci Rep 2020; 10:18080. [PMID: 33093535 PMCID: PMC7581757 DOI: 10.1038/s41598-020-75045-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Accepted: 10/09/2020] [Indexed: 12/21/2022] Open
Abstract
In recent years, advanced HPLC-MS strategies based on intact protein (“top-down”) or protein subunit (“middle-up/middle-down”) analysis have been implemented for the characterization of therapeutic monoclonal antibodies. Here, we assess feasibility of middle-up/middle-down analysis for polyclonal IgGs exhibiting extensive sequence variability. Specifically, we addressed IgGs from mouse, representing an important model system in immunological investigations. To obtain Fc/2 portions as conserved subunits of IgGs, we made use of the bacterial protease SpeB. For this purpose, we initially determined SpeB cleavage sites in murine IgGs. The resulting Fc/2 portions characteristic of different subclasses were subsequently analysed by ion-pair reversed-phase HPLC hyphenated to high-resolution mass spectrometry. This enabled simultaneous relative quantification of IgG subclasses and their N-glycosylation variants, both of which influence IgG effector functions. To assess method capabilities in an immunological context, we applied the analytical workflow to polyclonal antibodies obtained from BALB/c mice immunized with the grass pollen allergen Phl p 6. The study revealed a shift in IgG subclasses and Fc-glycosylation patterns in total and antigen-specific IgGs from different mouse cohorts, respectively. Eventually, Fc/2 characterization may reveal other protein modifications including oxidation, amino acid exchanges, and C-terminal lysine, and may thus be implemented for quality control of functional antibodies.
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Affiliation(s)
- Constantin Blöchl
- Department of Biosciences, Bioanalytical Research Labs, University of Salzburg, Hellbrunner Straße 34, 5020, Salzburg, Austria
| | - Christof Regl
- Department of Biosciences, Bioanalytical Research Labs, University of Salzburg, Hellbrunner Straße 34, 5020, Salzburg, Austria.,Christian Doppler Laboratory for Innovative Tools for Biosimilar Characterization, University of Salzburg, Hellbrunner Straße 34, 5020, Salzburg, Austria
| | - Christian G Huber
- Department of Biosciences, Bioanalytical Research Labs, University of Salzburg, Hellbrunner Straße 34, 5020, Salzburg, Austria.,Christian Doppler Laboratory for Innovative Tools for Biosimilar Characterization, University of Salzburg, Hellbrunner Straße 34, 5020, Salzburg, Austria
| | - Petra Winter
- Department of Biosciences, Division of Allergy and Immunology, University of Salzburg, Hellbrunner Straße 34, 5020, Salzburg, Austria
| | - Richard Weiss
- Department of Biosciences, Division of Allergy and Immunology, University of Salzburg, Hellbrunner Straße 34, 5020, Salzburg, Austria
| | - Therese Wohlschlager
- Department of Biosciences, Bioanalytical Research Labs, University of Salzburg, Hellbrunner Straße 34, 5020, Salzburg, Austria. .,Christian Doppler Laboratory for Innovative Tools for Biosimilar Characterization, University of Salzburg, Hellbrunner Straße 34, 5020, Salzburg, Austria.
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28
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Lee HK, Ha DI, Kang JG, Park GW, Lee JY, Cho K, Bin Moon S, Shin JH, Kim YS, An HJ, Kim JY, Yoo JS, Ko JH. Selective Identification of α-Galactosyl Epitopes in N-Glycoproteins Using Characteristic Fragment Ions from Higher-Energy Collisional Dissociation. Anal Chem 2020; 92:13144-13154. [PMID: 32902264 DOI: 10.1021/acs.analchem.0c02276] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
The α-galactosyl epitope is a terminal N-glycan moiety of glycoproteins found in mammals except in humans, and thus, it is recognized as an antigen that provokes an immunogenic response in humans. Accordingly, it is necessary to analyze the α-galactosyl structure in biopharmaceuticals or organ transplants. Due to an identical glycan composition and molecular mass between α-galactosyl N-glycans and hybrid/high-mannose-type N-glycans, it is challenging to characterize α-galactosyl epitopes in N-glycoproteins using mass spectrometry. Here, we describe a method to identify α-galactosyl N-glycopeptides in mice glycoproteins using liquid chromatography with tandem mass spectrometry with higher-energy collisional dissociation (HCD). The first measure was an absence of [YHM] ion peaks in the HCD spectra, which was exclusively observed in hybrid and/or high-mannose-type N-glycopeptides. The second complementary criterion was the ratio of an m/z 528.19 (Hex2HexNAc1) ion to m/z 366.14 (Hex1HexNAc1) ion (Im/z528/Im/z366). The measure of [Im/z528/Im/z366 > 0.3] enabled a clear-cut determination of α-galactosyl N-glycopeptides with high accuracy. In Ggta1 knockout mice, we could not find any α-galactosyl N-glycoproteins identified in WT mice plasma. Using this method, we could screen for α-galactosyl N-glycoproteins from mice spleen, lungs, and plasma samples in a highly sensitive and specific manner. Conclusively, we suggest that this method will provide a robust analytical tool for determination of α-galactosyl epitopes in pharmaceuticals and complex biological samples.
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Affiliation(s)
- Hyun Kyoung Lee
- Research Center of Bioconvergence Analysis, Korea Basic Science Institute, Ochang-eup, Cheongju 28119, Republic of Korea.,Graduate School of Analytical Science and Technology, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Dae-In Ha
- Genome Editing Research Center, KRIBB, 125 Gwahak-ro, Daejeon 34141, Republic of Korea.,Department of Biomolecular Science, KRIBB School of Bioscience, Korea University of Science and Technology (UST), 217 Gajeong-ro, Daejeon 34113, Republic of Korea
| | - Jeong Gu Kang
- Genome Editing Research Center, KRIBB, 125 Gwahak-ro, Daejeon 34141, Republic of Korea
| | - Gun Wook Park
- Research Center of Bioconvergence Analysis, Korea Basic Science Institute, Ochang-eup, Cheongju 28119, Republic of Korea
| | - Ju Yeon Lee
- Research Center of Bioconvergence Analysis, Korea Basic Science Institute, Ochang-eup, Cheongju 28119, Republic of Korea
| | - Kun Cho
- Research Center of Bioconvergence Analysis, Korea Basic Science Institute, Ochang-eup, Cheongju 28119, Republic of Korea
| | - Su Bin Moon
- Genome Editing Research Center, KRIBB, 125 Gwahak-ro, Daejeon 34141, Republic of Korea.,Department of Biomolecular Science, KRIBB School of Bioscience, Korea University of Science and Technology (UST), 217 Gajeong-ro, Daejeon 34113, Republic of Korea
| | - Jong Hwan Shin
- Research Center of Bioconvergence Analysis, Korea Basic Science Institute, Ochang-eup, Cheongju 28119, Republic of Korea.,Graduate School of Analytical Science and Technology, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Yong-Sam Kim
- Genome Editing Research Center, KRIBB, 125 Gwahak-ro, Daejeon 34141, Republic of Korea.,Department of Biomolecular Science, KRIBB School of Bioscience, Korea University of Science and Technology (UST), 217 Gajeong-ro, Daejeon 34113, Republic of Korea
| | - Hyun Joo An
- Research Center of Bioconvergence Analysis, Korea Basic Science Institute, Ochang-eup, Cheongju 28119, Republic of Korea.,Graduate School of Analytical Science and Technology, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Jin Young Kim
- Research Center of Bioconvergence Analysis, Korea Basic Science Institute, Ochang-eup, Cheongju 28119, Republic of Korea
| | - Jong Shin Yoo
- Research Center of Bioconvergence Analysis, Korea Basic Science Institute, Ochang-eup, Cheongju 28119, Republic of Korea.,Graduate School of Analytical Science and Technology, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Jeong-Heon Ko
- Genome Editing Research Center, KRIBB, 125 Gwahak-ro, Daejeon 34141, Republic of Korea.,Department of Biomolecular Science, KRIBB School of Bioscience, Korea University of Science and Technology (UST), 217 Gajeong-ro, Daejeon 34113, Republic of Korea
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29
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Changes in subclass-specific IgG Fc glycosylation associated with the postnatal maturation of the murine immune system. Sci Rep 2020; 10:15243. [PMID: 32943699 PMCID: PMC7498460 DOI: 10.1038/s41598-020-71899-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Accepted: 08/17/2020] [Indexed: 01/06/2023] Open
Abstract
Early postnatal life is characterized by a critical time period in which the developing neonatal immune system transitions from passive immunity, induced by protective maternal antibodies, to the competence of a fully functioning immune system. The inflammatory capability of both maternal and neonatal antibodies is governed by N-linked glycosylation of the Fc region, and though this has been examined extensively in adults, there is currently little information regarding antibody glycosylation patterns during early postnatal life. To characterize the murine IgG Fc glycosylation profile during early life, we used nano-LC-ESI-Qq-TOF mass spectrometry analysis to assess subclass specific Asn-297 glycosylation patterns in the serum of BALB/c mice from 5-60 days of age. From birth to adulthood, we observed a decline in proinflammatory Fc glycosylation in all IgG subclasses. This was shown by significantly reduced agalactosylated and monogalactosylated structures combined with increased sialylation after weaning at 45 and 60 days of age. This information indicates that the transition between neonatal life and adulthood in mice is accompanied by reduction of inflammatory IgG antibodies. Our study contributes to a growing body of literature indicating the importance of IgG Fc glycosylation and its association with inflammation during different life stages.
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30
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Han J, Pan Y, Gu Y, Xu X, Zhao R, Sha J, Zhang R, Gu J, Ren S. Profiling of IgG N-glycome during mouse aging: Fucosylated diantennary glycans containing one Neu5Gc-linked LacNAc are associated with age. J Proteomics 2020; 229:103966. [PMID: 32891889 DOI: 10.1016/j.jprot.2020.103966] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 08/23/2020] [Accepted: 08/31/2020] [Indexed: 12/12/2022]
Abstract
N-glycosylation of immunoglobulin G (IgG) has been reported to change in human aging and in some age-related diseases. To further understand the molecular processes that determine these alterations, a detailed examination of individual IgG N-glycans with aging remains required. Mouse is the most commonly used model animal in studies of aging and age-related diseases, and mice have the advantage of relatively controllable genetic and environment variations compared to human. In this study, we systemically investigated the changes in serum IgG N-glycome in C57BL/6 mice during aging at 12 time points (6-80 weeks) via ultraperformance liquid chromatography with fluorescence detection. The study demonstrated several important findings. First, four chromatographic IgG N-glycan peaks were identified for the first time, including a high-mannose glycan, a monoantennary glycan, and two afucosylated glycans. Second, most of the IgG glycan levels changed significantly and presented pronounced gender-related differences from 6 to 12 weeks. Interestingly, all the IgG glycan levels tended to be similar between male and female mice at 12 weeks. Third, the level of fucosylated diantennary glycans containing one N-glycolylneuraminic acid (Neu5Gc)-linked N-acetyllactosamine (LacNAc) decreased gradually and showed a significant negative correlation with age from 24 to 80 weeks (r = -0.716, p < 0.0001), which was not sex-specific. SIGNIFICANCE: More comprehensive profile of murine IgG N-glycans by ultraperformance liquid chromatography with fluorescence detection was shown in this study with four newly identified chromatographic murine IgG N-glycan peaks. The majority of IgG N-glycans showed substantial stage-specific changes and sex-related differences during mouse aging, indicating a strict regulatory mechanism of glycan synthesis. The level of fucosylated diantennary glycans containing one Neu5Gc-linked LacNAc was significantly negatively correlated with age from 24 to 80 weeks, suggesting its great potential as an aging biomarker. The detailed characteristics of IgG N-glycosylation with aging in C57BL/6 mice demonstrated in the present study could provide essential reference data for studying the function and mechanism of IgG glycosylation in age-related researches based on C57BL/6 mouse models.
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Affiliation(s)
- Jing Han
- NHC Key Laboratory of Glycoconjugates Research, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Yiqing Pan
- NHC Key Laboratory of Glycoconjugates Research, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Yong Gu
- NHC Key Laboratory of Glycoconjugates Research, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Xiaoyan Xu
- NHC Key Laboratory of Glycoconjugates Research, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Ran Zhao
- Obstetrics and Gynecology Hospital, Fudan University, Shanghai 200090, China
| | - Jichen Sha
- NHC Key Laboratory of Glycoconjugates Research, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Rongrong Zhang
- NHC Key Laboratory of Glycoconjugates Research, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Jianxin Gu
- NHC Key Laboratory of Glycoconjugates Research, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China.
| | - Shifang Ren
- NHC Key Laboratory of Glycoconjugates Research, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China.
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31
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Zeng J, Eljalby M, Aryal RP, Lehoux S, Stavenhagen K, Kudelka MR, Wang Y, Wang J, Ju T, von Andrian UH, Cummings RD. Cosmc controls B cell homing. Nat Commun 2020; 11:3990. [PMID: 32778659 PMCID: PMC7417590 DOI: 10.1038/s41467-020-17765-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Accepted: 07/17/2020] [Indexed: 12/15/2022] Open
Abstract
The molecular mechanisms regulating lymphocyte homing into lymph nodes are only partly understood. Here, we report that B cell-specific deletion of the X-linked gene, Cosmc, and the consequent decrease of protein O-glycosylation, induces developmental blocks of mouse B cells. After transfer into wild-type recipient, Cosmc-null B cells fail to home to lymph nodes as well as non-lymphoid organs. Enzymatic desialylation of wild-type B cells blocks their migration into lymph nodes, indicating a requirement of sialylated O-glycans for proper trafficking. Mechanistically, Cosmc-deficient B cells have normal rolling and firm arrest on high endothelium venules (HEV), thereby attributing their inefficient trafficking to alterations in the subsequent transendothelial migration step. Finally, Cosmc-null B cells have defective chemokine signaling responses. Our results thus demonstrate that Cosmc and its effects on O-glycosylation are important for controlling B cell homing.
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Affiliation(s)
- Junwei Zeng
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Mahmoud Eljalby
- Department of Microbiology & Immunobiology, Harvard Medical School, Boston, MA, USA
| | - Rajindra P Aryal
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Sylvain Lehoux
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Kathrin Stavenhagen
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Matthew R Kudelka
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
- Department of Biochemistry, Emory University, Atlanta, GA, USA
| | - Yingchun Wang
- Department of Biochemistry, Emory University, Atlanta, GA, USA
| | - Jianmei Wang
- Department of Biochemistry, Emory University, Atlanta, GA, USA
| | - Tongzhong Ju
- Department of Biochemistry, Emory University, Atlanta, GA, USA
- Office of Biotechnology Products, Center for Drug Evaluation and Research, U. S. Food and Drug Administration, Silver Spring, MD, 20993, USA
| | - Ulrich H von Andrian
- Department of Microbiology & Immunobiology, Harvard Medical School, Boston, MA, USA
- The Ragon Institute of MGH, MIT & Harvard, Cambridge, MA, USA
| | - Richard D Cummings
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA.
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32
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Clauder AK, Kordowski A, Bartsch YC, Köhl G, Lilienthal GM, Almeida LN, Lindemann T, Petry J, Rau CN, Gramalla-Schmitz A, Dühring L, Elbracht C, Kenno S, Tillmann J, Wuhrer M, Ludwig RJ, Ibrahim SM, Bieber K, Köhl J, Ehlers M, Manz RA. IgG Fc N-Glycosylation Translates MHCII Haplotype into Autoimmune Skin Disease. J Invest Dermatol 2020; 141:285-294. [PMID: 32653301 DOI: 10.1016/j.jid.2020.06.022] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 05/19/2020] [Accepted: 06/03/2020] [Indexed: 11/29/2022]
Abstract
The major histocompatibility complex haplotype represents the most prevalent genetic risk factor for the development of autoimmune diseases. However, the mechanisms by which major histocompatibility complex-associated genetic susceptibility translates into autoimmune disease are not fully understood. Epidermolysis bullosa acquisita is an autoimmune skin-blistering disease driven by autoantibodies to type VII collagen. Here, we investigated autoantigen-specific plasma cells, CD4+ T cells, and IgG fraction crystallizable glycosylation in murine epidermolysis bullosa acquisita in congenic mouse strains with the disease-permitting H2s or disease-nonpermitting H2b major histocompatibility complex II haplotypes. Mice with an H2s haplotype showed increased numbers of autoreactive CD4+ T cells and elevated IL-21 and IFN-γ production, associated with a higher frequency of IgG autoantibodies with an agalactosylated, proinflammatory N-glycan moiety. Mechanistically, we show that the altered antibody glycosylation leads to increased ROS release from neutrophils, the main drivers of autoimmune inflammation in this model. These results indicate that major histocompatibility complex II-associated susceptibility to autoimmune diseases acuminates in a proinflammatory IgG fraction crystallizable N-glycosylation pattern and provide a mechanistic link to increased ROS release by neutrophils.
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Affiliation(s)
- Ann-Katrin Clauder
- Institute for Systemic Inflammation Research, University of Lübeck, Lübeck, Germany
| | - Anna Kordowski
- Institute for Systemic Inflammation Research, University of Lübeck, Lübeck, Germany; Institute for Nutritional Medicine, University of Lübeck and University Medical Center Schleswig-Holstein, Lübeck, Germany
| | - Yannic C Bartsch
- Laboratories of Immunology and Antibody Glycan Analysis, Institute for Nutritional Medicine, University of Lübeck and University Medical Center Schleswig-Holstein, Lübeck, Germany
| | - Gabriele Köhl
- Institute for Systemic Inflammation Research, University of Lübeck, Lübeck, Germany
| | - Gina-Maria Lilienthal
- Laboratories of Immunology and Antibody Glycan Analysis, Institute for Nutritional Medicine, University of Lübeck and University Medical Center Schleswig-Holstein, Lübeck, Germany
| | - Larissa N Almeida
- Institute for Systemic Inflammation Research, University of Lübeck, Lübeck, Germany
| | - Timo Lindemann
- Institute for Systemic Inflammation Research, University of Lübeck, Lübeck, Germany
| | - Janina Petry
- Laboratories of Immunology and Antibody Glycan Analysis, Institute for Nutritional Medicine, University of Lübeck and University Medical Center Schleswig-Holstein, Lübeck, Germany
| | - Christina N Rau
- Institute for Systemic Inflammation Research, University of Lübeck, Lübeck, Germany
| | | | - Lara Dühring
- Laboratories of Immunology and Antibody Glycan Analysis, Institute for Nutritional Medicine, University of Lübeck and University Medical Center Schleswig-Holstein, Lübeck, Germany
| | - Claudia Elbracht
- Institute for Systemic Inflammation Research, University of Lübeck, Lübeck, Germany
| | - Samyr Kenno
- Institute for Systemic Inflammation Research, University of Lübeck, Lübeck, Germany
| | - Jenny Tillmann
- Institute for Systemic Inflammation Research, University of Lübeck, Lübeck, Germany
| | - Manfred Wuhrer
- Center for Proteomics and Metabolomics, Leiden University Medical Center (LUMC), Leiden, Netherlands
| | - Ralf J Ludwig
- Lübeck Institute of Experimental Dermatology (LIED), University of Lübeck, Lübeck, Germany
| | - Saleh M Ibrahim
- Lübeck Institute of Experimental Dermatology (LIED), University of Lübeck, Lübeck, Germany
| | - Katja Bieber
- Lübeck Institute of Experimental Dermatology (LIED), University of Lübeck, Lübeck, Germany
| | - Jörg Köhl
- Institute for Systemic Inflammation Research, University of Lübeck, Lübeck, Germany; Division of Immunobiology, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Marc Ehlers
- Laboratories of Immunology and Antibody Glycan Analysis, Institute for Nutritional Medicine, University of Lübeck and University Medical Center Schleswig-Holstein, Lübeck, Germany
| | - Rudolf Armin Manz
- Institute for Systemic Inflammation Research, University of Lübeck, Lübeck, Germany.
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33
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Bartsch YC, Eschweiler S, Leliavski A, Lunding HB, Wagt S, Petry J, Lilienthal GM, Rahmöller J, de Haan N, Hölscher A, Erapaneedi R, Giannou AD, Aly L, Sato R, de Neef LA, Winkler A, Braumann D, Hobusch J, Kuhnigk K, Krémer V, Steinhaus M, Blanchard V, Gemoll T, Habermann JK, Collin M, Salinas G, Manz RA, Fukuyama H, Korn T, Waisman A, Yogev N, Huber S, Rabe B, Rose-John S, Busch H, Berberich-Siebelt F, Hölscher C, Wuhrer M, Ehlers M. IgG Fc sialylation is regulated during the germinal center reaction following immunization with different adjuvants. J Allergy Clin Immunol 2020; 146:652-666.e11. [PMID: 32445838 DOI: 10.1016/j.jaci.2020.04.059] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Revised: 04/23/2020] [Accepted: 04/24/2020] [Indexed: 12/18/2022]
Abstract
BACKGROUND Effector functions of IgG Abs are regulated by their Fc N-glycosylation pattern. IgG Fc glycans that lack galactose and terminal sialic acid residues correlate with the severity of inflammatory (auto)immune disorders and have also been linked to protection against viral infection and discussed in the context of vaccine-induced protection. In contrast, sialylated IgG Abs have shown immunosuppressive effects. OBJECTIVE We sought to investigate IgG glycosylation programming during the germinal center (GC) reaction following immunization of mice with a foreign protein antigen and different adjuvants. METHODS Mice were analyzed for GC T-cell, B-cell, and plasma cell responses, as well as for antigen-specific serum IgG subclass titers and Fc glycosylation patterns. RESULTS Different adjuvants induce distinct IgG+ GC B-cell responses with specific transcriptomes and expression levels of the α2,6-sialyltransferase responsible for IgG sialylation that correspond to distinct serum IgG Fc glycosylation patterns. Low IgG Fc sialylation programming in GC B cells was overall highly dependent on the Foxp3- follicular helper T (TFH) cell-inducing cytokine IL-6, here in particular induced by water-in-oil adjuvants and Mycobacterium tuberculosis. Furthermore, low IgG Fc sialylation programming was dependent on adjuvants that induced IL-27 receptor-dependent IFN-γ+ TFH1 cells, IL-6/IL-23-dependent IL-17A+ TFH17 cells, and high ratios of TFH cells to Foxp3+ follicular regulatory T cells. Here, the 2 latter were dependent on M tuberculosis and its cord factor. CONCLUSION This study's findings regarding adjuvant-dependent GC responses and IgG glycosylation programming may aid in the development of novel vaccination strategies to induce IgG Abs with both high affinity and defined Fc glycosylation patterns in the GC.
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Affiliation(s)
- Yannic C Bartsch
- Laboratories of Immunology and Antibody Glycan Analysis, Institute for Nutritional Medicine, University of Lübeck and University Medical Center Schleswig-Holstein, Lübeck, Germany
| | - Simon Eschweiler
- Laboratories of Immunology and Antibody Glycan Analysis, Institute for Nutritional Medicine, University of Lübeck and University Medical Center Schleswig-Holstein, Lübeck, Germany
| | - Alexei Leliavski
- Laboratories of Immunology and Antibody Glycan Analysis, Institute for Nutritional Medicine, University of Lübeck and University Medical Center Schleswig-Holstein, Lübeck, Germany
| | - Hanna B Lunding
- Laboratories of Immunology and Antibody Glycan Analysis, Institute for Nutritional Medicine, University of Lübeck and University Medical Center Schleswig-Holstein, Lübeck, Germany
| | - Sander Wagt
- Laboratories of Immunology and Antibody Glycan Analysis, Institute for Nutritional Medicine, University of Lübeck and University Medical Center Schleswig-Holstein, Lübeck, Germany; Center for Proteomics and Metabolomics, Leiden University Medical Center, Leiden, The Netherlands
| | - Janina Petry
- Laboratories of Immunology and Antibody Glycan Analysis, Institute for Nutritional Medicine, University of Lübeck and University Medical Center Schleswig-Holstein, Lübeck, Germany
| | - Gina-Maria Lilienthal
- Laboratories of Immunology and Antibody Glycan Analysis, Institute for Nutritional Medicine, University of Lübeck and University Medical Center Schleswig-Holstein, Lübeck, Germany
| | - Johann Rahmöller
- Laboratories of Immunology and Antibody Glycan Analysis, Institute for Nutritional Medicine, University of Lübeck and University Medical Center Schleswig-Holstein, Lübeck, Germany; Department of Anesthesiology and Intensive Care, University Medical Center Schleswig-Holstein, Lübeck, Germany
| | - Noortje de Haan
- Center for Proteomics and Metabolomics, Leiden University Medical Center, Leiden, The Netherlands
| | | | - Raghu Erapaneedi
- Institute for Pathology, University of Würzburg, Würzburg, Germany
| | - Anastasios D Giannou
- First Department of Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Lilian Aly
- Department of Neurology, Technical University of Munich, Klinikum rechts der Isar, Germany
| | - Ryota Sato
- Laboratory for Lymphocyte Differentiation, RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa, Japan
| | - Louise A de Neef
- Center for Proteomics and Metabolomics, Leiden University Medical Center, Leiden, The Netherlands
| | - André Winkler
- Laboratories of Immunology and Antibody Glycan Analysis, Institute for Nutritional Medicine, University of Lübeck and University Medical Center Schleswig-Holstein, Lübeck, Germany; Laboratory of Tolerance and Autoimmunity at the German Rheumatism Research Center, a Leibniz Institute, Berlin, Germany
| | - Dominique Braumann
- Laboratories of Immunology and Antibody Glycan Analysis, Institute for Nutritional Medicine, University of Lübeck and University Medical Center Schleswig-Holstein, Lübeck, Germany; Institute of Laboratory Medicine, Clinical Chemistry and Pathobiochemistry, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Juliane Hobusch
- Laboratories of Immunology and Antibody Glycan Analysis, Institute for Nutritional Medicine, University of Lübeck and University Medical Center Schleswig-Holstein, Lübeck, Germany
| | - Kyra Kuhnigk
- Laboratories of Immunology and Antibody Glycan Analysis, Institute for Nutritional Medicine, University of Lübeck and University Medical Center Schleswig-Holstein, Lübeck, Germany
| | - Vanessa Krémer
- Laboratories of Immunology and Antibody Glycan Analysis, Institute for Nutritional Medicine, University of Lübeck and University Medical Center Schleswig-Holstein, Lübeck, Germany
| | - Moritz Steinhaus
- Laboratories of Immunology and Antibody Glycan Analysis, Institute for Nutritional Medicine, University of Lübeck and University Medical Center Schleswig-Holstein, Lübeck, Germany
| | - Véronique Blanchard
- Institute of Laboratory Medicine, Clinical Chemistry and Pathobiochemistry, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Timo Gemoll
- Section for Translational Surgical Oncology & Biobanking, Department of Surgery, University of Lübeck and University Medical Center Schleswig-Holstein, Lübeck, Germany
| | - Jens K Habermann
- Section for Translational Surgical Oncology & Biobanking, Department of Surgery, University of Lübeck and University Medical Center Schleswig-Holstein, Lübeck, Germany
| | - Mattias Collin
- Division of Infection Medicine, Department of Clinical Sciences, Lund University, Lund, Sweden
| | - Gabriela Salinas
- NGS-Integrative Genomics, Institute Human Genetics, University Medical Center Göttingen, Göttingen, Germany
| | - Rudolf A Manz
- Institute for Systemic Inflammation Research, University of Lübeck, Lübeck, Germany
| | - Hidehiro Fukuyama
- Laboratory for Lymphocyte Differentiation, RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa, Japan
| | - Thomas Korn
- Department of Neurology, Technical University of Munich, Klinikum rechts der Isar, Germany; Munich Cluster for Systems Neurology, SyNergy, Germany
| | - Ari Waisman
- Institute for Molecular Medicine, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Nir Yogev
- Clinic and Polyclinic for Dermatology and Venerology, University Hospital Cologne, Cologne, Germany
| | - Samuel Huber
- First Department of Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Björn Rabe
- Institute of Biochemistry, Kiel University, Kiel, Germany
| | | | - Hauke Busch
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
| | - Friederike Berberich-Siebelt
- Institute for Pathology, University of Würzburg, Würzburg, Germany; Comprehensive Cancer Center Mainfranken, University of Würzburg, Würzburg, Germany
| | - Christoph Hölscher
- Infection Immunology, Research Center Borstel, Borstel, Germany; German Center for Infection Research, Partner Site Hamburg-Lübeck-Borstel-Riems, Borstel, Germany
| | - Manfred Wuhrer
- Center for Proteomics and Metabolomics, Leiden University Medical Center, Leiden, The Netherlands
| | - Marc Ehlers
- Laboratories of Immunology and Antibody Glycan Analysis, Institute for Nutritional Medicine, University of Lübeck and University Medical Center Schleswig-Holstein, Lübeck, Germany; Laboratory of Tolerance and Autoimmunity at the German Rheumatism Research Center, a Leibniz Institute, Berlin, Germany; Airway Research Center North, University of Lübeck, German Center for Lung Research, Lübeck, Germany.
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34
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Han J, Liu Q, Xu X, Qin W, Pan Y, Qin R, Zhao R, Gu Y, Gu J, Ren S. Relative Quantitation of Subclass-Specific Murine IgG Fc N-Glycoforms by Multiple Reaction Monitoring. ACS OMEGA 2020; 5:8564-8571. [PMID: 32337418 PMCID: PMC7178347 DOI: 10.1021/acsomega.9b04412] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2019] [Accepted: 03/26/2020] [Indexed: 06/11/2023]
Abstract
N-Linked glycosylation of the fragment crystallizable (Fc) domain of immunoglobulin G (IgG) is considered a significant modulator of antibody functions, which is known to be subclass-specific. As mice are the most widely used model organisms in immunological research, determining the variation in Fc glycosylation among each murine IgG subclass in different physiological or pathological statuses is beneficial for studying how the IgG subclass effector function is affected by Fc glycosylation. In this study, we established a method to quantify murine IgG Fc glycoforms normalized to the protein abundance at a subclass-specific level for various mouse strains using multiple reaction monitoring. The glycoform level was normalized to the subclass protein abundance (subclass-specific peptide intensity) in each IgG subclass to eliminate the contribution from the subclass protein abundance. Both good linearity and high repeatability of the method were validated by investigating a mixed mouse serum sample. The method was applied to quantify the differences in subclass-specific IgG Fc N-glycoforms between systemic sclerosis (SSc) mice and healthy control mice. The results demonstrated that each IgG subclass had its own characteristic-altered glycosylation, implying the close association of subclass-specific IgG Fc glycosylation with SSc in mice. This report demonstrates a method with great reliability and practicality that has promising potential for the relative quantitation of subclass-specific IgG Fc N-glycoforms in multiple mouse models.
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Affiliation(s)
- Jing Han
- NHC
Key Laboratory of Glycoconjugates Research, Department of Biochemistry
and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Qingmei Liu
- Department
of Dermatology, Huashan Hospital, Fudan
University, Shanghai 200040, China
- State
Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai 200433, China
| | - Xiaoyan Xu
- NHC
Key Laboratory of Glycoconjugates Research, Department of Biochemistry
and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Wenjun Qin
- NHC
Key Laboratory of Glycoconjugates Research, Department of Biochemistry
and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Yiqing Pan
- NHC
Key Laboratory of Glycoconjugates Research, Department of Biochemistry
and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Ruihuan Qin
- NHC
Key Laboratory of Glycoconjugates Research, Department of Biochemistry
and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Ran Zhao
- Obstetrics
and Gynecology Hospital, Fudan University, Shanghai 200090, China
| | - Yong Gu
- NHC
Key Laboratory of Glycoconjugates Research, Department of Biochemistry
and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Jianxin Gu
- NHC
Key Laboratory of Glycoconjugates Research, Department of Biochemistry
and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Shifang Ren
- NHC
Key Laboratory of Glycoconjugates Research, Department of Biochemistry
and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
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35
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Loss of core fucosylation in both ST6GAL1 and its substrate enhances glycoprotein sialylation in mice. Biochem J 2020; 477:1179-1201. [DOI: 10.1042/bcj20190789] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 02/26/2020] [Accepted: 03/06/2020] [Indexed: 01/16/2023]
Abstract
Fucosyltransferase 8 (FUT8) and β-galactoside α-2,6-sialyltransferase 1 (ST6GAL1) are glycosyltransferases that catalyze α1,6-fucosylation and α2,6-sialylation, respectively, in the mammalian N-glycosylation pathway. They are aberrantly expressed in various human diseases. FUT8 is non-glycosylated but is responsible for the fucosylation of ST6GAL1. However, the mechanism for the interaction between these two enzymes is unknown. In this study, we show that serum levels of α2,6-sialylated N-glycans are increased in Fut8−/− mice, whereas the mRNA and protein levels of ST6GAL1 are unchanged in mouse live tissues. The level of α2,6-sialylation on IgG was also enhanced in Fut8−/− mice along with ST6GAL1 catalytic activity increase in both serum and liver. Moreover, it was observed that ST6GAL1 prefers non-fucosylated substrates. Interestingly, increased core fucosylation accompanied by a reduction in α2,6-sialylation, was detected in rheumatoid arthritis patient serum. These findings provide new insight into the interactions between FUT8 and ST6GAL1.
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36
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Zaytseva OO, Seeling M, Krištić J, Lauc G, Pezer M, Nimmerjahn F. Fc-Linked IgG N-Glycosylation in FcγR Knock-Out Mice. Front Cell Dev Biol 2020; 8:67. [PMID: 32195245 PMCID: PMC7063467 DOI: 10.3389/fcell.2020.00067] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Accepted: 01/24/2020] [Indexed: 11/13/2022] Open
Abstract
Immunoglobulin G (IgG) is the most abundant immunoglobulin isotype in the blood and is involved in the pathogenesis and progression of various diseases. Glycosylation of the IgG fragment crystallizable (Fc) region is shown to vary in different physiological and pathological states. Fc N-glycan composition can alter the effector functions of IgG by modulating its affinity for ligands, such as Fcγ receptors (FcγRs). However, it is not known whether IgG glycosylation is affected by the available repertoire of FcγRs, and if the Fc-linked N-glycome can compensate for modulation of the IgG-FcγR interaction. To explore this, we examined the subclass-specific Fc IgG glycoprofiles of healthy male and female FcγR knock-out mice on C57BL/6 and BALB/c backgrounds. We observed slight changes in IgG Fc N-glycan profiles in different knock-outs; however, it seems that the strain background and sex have a stronger effect on N-glycosylation of IgG Fc regions than the FcγR repertoire.
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Affiliation(s)
- Olga O Zaytseva
- Glycoscience Research Laboratory, Genos Ltd., Zagreb, Croatia
| | - Michaela Seeling
- Division of Genetics, Department of Biology, University of Erlangen-Nürnberg, Erlangen, Germany
| | | | - Gordan Lauc
- Glycoscience Research Laboratory, Genos Ltd., Zagreb, Croatia.,Faculty of Pharmacy and Biochemistry, Department of Biochemistry and Molecular Biology, University of Zagreb, Zagreb, Croatia
| | - Marija Pezer
- Glycoscience Research Laboratory, Genos Ltd., Zagreb, Croatia
| | - Falk Nimmerjahn
- Division of Genetics, Department of Biology, University of Erlangen-Nürnberg, Erlangen, Germany
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37
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Bovine serum albumin affects N-glycoforms of murine IgG monoclonal antibody purified from hybridoma supernatants. Appl Microbiol Biotechnol 2020; 104:1583-1594. [PMID: 31915902 DOI: 10.1007/s00253-019-10309-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Revised: 11/25/2019] [Accepted: 12/08/2019] [Indexed: 12/11/2022]
Abstract
Immunoglobulin G (IgG) is a class of monoclonal antibodies (mAbs) commonly produced in mammalian cell lines. These cell lines are grown in finely adjusted culture media, which contain components that may impact glycoforms. As variation of N-glycoforms can impact the biological properties of IgGs, medium composition should be controlled. Here, we studied the effects on IgG N-glycoforms of different components in hybridoma culture media, specifically compared bovine serum albumin (BSA) with other small molecules, using a matrix-assisted laser desorption/ionization quadrupole ion trap time-of-flight multistage mass spectrometry (MALDI-QIT-TOF MSn)-based approach. We show that small molecular additives caused little change in glycan species, though a number of these reagents, especially glutamine, affected levels of glycosylation. In comparison, the addition of macromolecular protein BSA significantly changed IgG N-glycan patterns, not only in species but also in glycosylation levels. Together, our finding suggests that BSA increases the complexity of IgG N-glycoforms, thus raising the difficulty in maintaining glycoforms consistency during antibody production. Therefore, the effect of BSA on IgG N-glycans should be considered when designing optimal medium formulations for IgG production. KEY POINTS: • Small molecular medium additives only affect glycosylation levels of IgG N-glycans. • BSA significantly changes IgG N-glycoforms as a medium additive. • BSA's skewing of IgG N-glycoforms should be considered in IgG production.
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38
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Zhou J, Gao H, Xie W, Li Y. FcγR-binding affinity of monoclonal murine IgG1s carrying different N-linked Fc oligosaccharides. Biochem Biophys Res Commun 2019; 520:8-13. [DOI: 10.1016/j.bbrc.2019.09.068] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Accepted: 09/17/2019] [Indexed: 12/23/2022]
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39
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MIgGGly (mouse IgG glycosylation analysis) - a high-throughput method for studying Fc-linked IgG N-glycosylation in mice with nanoUPLC-ESI-MS. Sci Rep 2018; 8:13688. [PMID: 30209257 PMCID: PMC6135756 DOI: 10.1038/s41598-018-31844-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Accepted: 08/28/2018] [Indexed: 12/24/2022] Open
Abstract
Immunoglobulin G (IgG) N-glycosylation is crucial for its effector functions. It is a complex trait, and large sample sets are needed to discover multiple genetic factors that underlie it. While in humans such high-throughput studies of IgG N-glycans became usual, only one has been carried out in mice. Here we describe and validate a method for the relative quantification of IgG Fc-linked N-glycans in a subclass-specific manner using nano-reverse phase liquid chromatography coupled with mass-spectrometry (nanoRP-LC-MS) applied to murine IgG. High-throughput data processing is ensured by the LaCyTools software. We have shown that IgG isolation procedure is the main source of technical variation in the current protocol. The major glycoforms were quantified reliably with coefficients of variation below 6% for all the analytes with relative abundances above 5%. We have applied our method to a sample set of 3 inbred strains: BALB/c, C57BL/6 and C3H and observed differences in subclass-specific and strain-specific N-glycosylation of IgG, suggesting a significant genetic component in the regulation of Fc-linked IgG N-glycosylation.
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40
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Krištić J, Zaytseva OO, Ram R, Nguyen Q, Novokmet M, Vučković F, Vilaj M, Trbojević-Akmačić I, Pezer M, Davern KM, Morahan G, Lauc G. Profiling and genetic control of the murine immunoglobulin G glycome. Nat Chem Biol 2018; 14:516-524. [PMID: 29632412 DOI: 10.1038/s41589-018-0034-3] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2017] [Accepted: 02/27/2018] [Indexed: 11/09/2022]
Abstract
Immunoglobulin G (IgG) glycosylation is essential for function of the immune system, but the genetic and environmental factors that underlie its inter-individual variability are not well defined. The Collaborative Cross (CC) genetic resource harnesses over 90% of the common genetic variation of the mouse. By analyzing the IgG glycome composition of 95 CC strains, we made several important observations: (i) glycome variation between mouse strains was higher than between individual humans, despite all mice having the same environmental influences; (ii) five genetic loci were found to be associated with murine IgG glycosylation; (iii) variants outside traditional glycosylation site motifs affected glycome variation; (iv) bisecting N-acetylglucosamine (GlcNAc) was produced by several strains although most previous studies have reported the absence of glycans containing the bisecting GlcNAc on murine IgGs; and (v) common laboratory mouse strains are not optimal animal models for studying effects of glycosylation on IgG function.
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Affiliation(s)
| | - Olga O Zaytseva
- Glycoscience Research Laboratory, Genos Ltd., Zagreb, Croatia
| | - Ramesh Ram
- Centre for Diabetes Research, Harry Perkins Institute of Medical Research, QEII Medical Centre, Nedlands, WA, Australia.,Centre for Medical Research, University of Western Australia, Perth, WA, Australia
| | - Quang Nguyen
- Centre for Diabetes Research, Harry Perkins Institute of Medical Research, QEII Medical Centre, Nedlands, WA, Australia.,Centre for Medical Research, University of Western Australia, Perth, WA, Australia
| | - Mislav Novokmet
- Glycoscience Research Laboratory, Genos Ltd., Zagreb, Croatia
| | - Frano Vučković
- Glycoscience Research Laboratory, Genos Ltd., Zagreb, Croatia
| | - Marija Vilaj
- Glycoscience Research Laboratory, Genos Ltd., Zagreb, Croatia
| | | | - Marija Pezer
- Glycoscience Research Laboratory, Genos Ltd., Zagreb, Croatia
| | - Kathleen M Davern
- Centre for Diabetes Research, Harry Perkins Institute of Medical Research, QEII Medical Centre, Nedlands, WA, Australia.,Centre for Medical Research, University of Western Australia, Perth, WA, Australia
| | - Grant Morahan
- Centre for Diabetes Research, Harry Perkins Institute of Medical Research, QEII Medical Centre, Nedlands, WA, Australia.,Centre for Medical Research, University of Western Australia, Perth, WA, Australia
| | - Gordan Lauc
- Glycoscience Research Laboratory, Genos Ltd., Zagreb, Croatia. .,Department of Biochemistry and Molecular Biology, Faculty of Pharmacy and Biochemistry, University of Zagreb, Zagreb, Croatia.
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41
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Falconer DJ, Barb AW. Mouse IgG2c Fc loop residues promote greater receptor-binding affinity than mouse IgG2b or human IgG1. PLoS One 2018; 13:e0192123. [PMID: 29408873 PMCID: PMC5800599 DOI: 10.1371/journal.pone.0192123] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Accepted: 01/18/2018] [Indexed: 12/11/2022] Open
Abstract
The structures of non-human antibodies are largely unstudied despite the potential for the identification of alternative structural motifs and physical properties that will benefit a basic understanding of protein and immune system evolution as well as highlight unexplored motifs to improve therapeutic monoclonal antibody. Here we probe the structure and receptor-binding properties of the mouse IgG2c crystallizable fragment (Fc) to compare to mouse IgG2b and human IgG1 Fcs. Models of mIgG2c Fc determined by x-ray crystallography with a complex-type biantennary (to 2.05 Å) or a truncated (1)GlcNAc asparagine-linked (N)-glycan attached (to 2.04 Å) show differences in key regions related to mouse Fc γ receptor IV (mFcγRIV) binding. Mouse IgG2c forms different non-bonded interactions between the BC, DE and FG loops than the highly-conserved mIgG2b and binds to FcγRIV with 4.7-fold greater affinity in the complex-type glycoform. Secondary structural elements surrounding the Asn297 site of glycosylation form longer beta strands in the truncated mIgG2c Fc glycoform when compared to mIgG2c with the complex-type N-glycan. Solution NMR spectroscopy of the N-linked (1)GlcNAc residues show differences between mIgG2b, 2c and hIgG1 Fc that correlate to receptor binding affinity. Mutations targeting differences in mIgG2 DE and FG loops decreased affinity of mIgG2c for FcγRIV and increased affinity of mIgG2b. Changes in NMR spectra of the mutant Fc proteins mirrored these changes in affinity. Our studies identified structural and functional differences in highly conserved molecules that were not predicted from primary sequence comparison.
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Affiliation(s)
- Daniel J. Falconer
- Roy J. Carver Department of Biochemistry, Biophysics and Molecular Biology Iowa State University, Ames, IA, United States of America
| | - Adam W. Barb
- Roy J. Carver Department of Biochemistry, Biophysics and Molecular Biology Iowa State University, Ames, IA, United States of America
- * E-mail:
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42
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Conserved FcγR- glycan discriminates between fucosylated and afucosylated IgG in humans and mice. Mol Immunol 2018; 94:54-60. [DOI: 10.1016/j.molimm.2017.12.006] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Revised: 11/29/2017] [Accepted: 12/06/2017] [Indexed: 01/19/2023]
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43
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Kao D, Lux A, Schaffert A, Lang R, Altmann F, Nimmerjahn F. IgG subclass and vaccination stimulus determine changes in antigen specific antibody glycosylation in mice. Eur J Immunol 2017; 47:2070-2079. [PMID: 28771702 DOI: 10.1002/eji.201747208] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Revised: 06/30/2017] [Accepted: 08/01/2017] [Indexed: 11/11/2022]
Abstract
Immunoglobulin G (IgG) glycosylation can modulate antibody effector functions. Depending on the precise composition of the sugar moiety attached to individual IgG glycovariants either pro- or anti-inflammatory effector pathways can be initiated via differential binding to type I or type II Fc-receptors. However, an in depth understanding of how individual IgG subclasses are glycosylated during the steady state and how their glycosylation pattern changes during vaccination is missing. To monitor IgG subclass glycosylation during the steady state and upon vaccination of mice with different T-cell dependent and independent antigens, tryptic digests of serum, and antigen-specific IgG preparations were analyzed by reversed phase-liquid chromatography-mass spectrometry. We show that there is a remarkable difference with respect to how individual IgG subclasses are glycosylated during the steady state. More importantly, upon T-cell dependent and independent vaccinations, individual antigen-specific IgG subclasses reacted differently with respect to changes in individual glycoforms, suggesting that the IgG subclass itself is a major determinant of restricting or allowing alterations in specific IgG glycovariants.
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Affiliation(s)
- Daniela Kao
- Chair of Genetics, Department of Biology, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Anja Lux
- Chair of Genetics, Department of Biology, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Anja Schaffert
- Chair of Genetics, Department of Biology, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Roland Lang
- Chair of Microbiology and Infection Immunology, University Hospital Erlangen, Erlangen, Germany
| | - Friedrich Altmann
- Department of Biochemistry, University of Natural Resources and Life Sciences, Vienna, Austria
| | - Falk Nimmerjahn
- Chair of Genetics, Department of Biology, University of Erlangen-Nuremberg, Erlangen, Germany
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Epp A, Hobusch J, Bartsch YC, Petry J, Lilienthal GM, Koeleman CAM, Eschweiler S, Möbs C, Hall A, Morris SC, Braumann D, Engellenner C, Bitterling J, Rahmöller J, Leliavski A, Thurmann R, Collin M, Moremen KW, Strait RT, Blanchard V, Petersen A, Gemoll T, Habermann JK, Petersen F, Nandy A, Kahlert H, Hertl M, Wuhrer M, Pfützner W, Jappe U, Finkelman FD, Ehlers M. Sialylation of IgG antibodies inhibits IgG-mediated allergic reactions. J Allergy Clin Immunol 2017; 141:399-402.e8. [PMID: 28728998 DOI: 10.1016/j.jaci.2017.06.021] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Revised: 05/31/2017] [Accepted: 06/14/2017] [Indexed: 01/09/2023]
Affiliation(s)
- Alexandra Epp
- Laboratories of Immunology and Antibody Glycan Analysis, Institute for Nutrition Medicine, University of Lübeck & University Medical Center Schleswig Holstein, Lübeck, Germany
| | - Juliane Hobusch
- Laboratories of Immunology and Antibody Glycan Analysis, Institute for Nutrition Medicine, University of Lübeck & University Medical Center Schleswig Holstein, Lübeck, Germany
| | - Yannic C Bartsch
- Laboratories of Immunology and Antibody Glycan Analysis, Institute for Nutrition Medicine, University of Lübeck & University Medical Center Schleswig Holstein, Lübeck, Germany
| | - Janina Petry
- Laboratories of Immunology and Antibody Glycan Analysis, Institute for Nutrition Medicine, University of Lübeck & University Medical Center Schleswig Holstein, Lübeck, Germany
| | - Gina-Maria Lilienthal
- Laboratories of Immunology and Antibody Glycan Analysis, Institute for Nutrition Medicine, University of Lübeck & University Medical Center Schleswig Holstein, Lübeck, Germany
| | - Carolien A M Koeleman
- Center for Proteomics and Metabolomics, Leiden University Medical Center, Leiden, The Netherlands
| | - Simon Eschweiler
- Laboratories of Immunology and Antibody Glycan Analysis, Institute for Nutrition Medicine, University of Lübeck & University Medical Center Schleswig Holstein, Lübeck, Germany
| | - Christian Möbs
- Department of Dermatology and Allergology, Philipps University Marburg, Marburg, Germany
| | - Ashley Hall
- Division of Emergency Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Suzanne C Morris
- Division of Immunology, Allergy and Rheumatology, Department of Medicine, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Dominique Braumann
- Laboratories of Immunology and Antibody Glycan Analysis, Institute for Nutrition Medicine, University of Lübeck & University Medical Center Schleswig Holstein, Lübeck, Germany; Laboratory of Glycodesign and Glycoanalytics, Institute for Laboratory Medicine, Clinical Chemistry and Pathobiochemistry, Charité-University Medicine Berlin, Berlin, Germany
| | - Christine Engellenner
- Division of Biochemical Immunology, Research Center Borstel, Leibniz-Center for Medicine and Biosciences, Borstel, Germany
| | - Josephine Bitterling
- Laboratories of Immunology and Antibody Glycan Analysis, Institute for Nutrition Medicine, University of Lübeck & University Medical Center Schleswig Holstein, Lübeck, Germany
| | - Johann Rahmöller
- Laboratories of Immunology and Antibody Glycan Analysis, Institute for Nutrition Medicine, University of Lübeck & University Medical Center Schleswig Holstein, Lübeck, Germany; Department of Anesthesiology and Intensive Care, University Medical Center Schleswig Holstein, Lübeck, Germany
| | - Alexei Leliavski
- Laboratories of Immunology and Antibody Glycan Analysis, Institute for Nutrition Medicine, University of Lübeck & University Medical Center Schleswig Holstein, Lübeck, Germany
| | - Robina Thurmann
- Laboratories of Immunology and Antibody Glycan Analysis, Institute for Nutrition Medicine, University of Lübeck & University Medical Center Schleswig Holstein, Lübeck, Germany
| | - Mattias Collin
- Division of Infection Medicine, Department of Clinical Sciences, Lund University, Lund, Sweden
| | - Kelley W Moremen
- Complex Carbohydrate Research Center, University of Georgia, Athens, Ga
| | - Richard T Strait
- Division of Emergency Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Véronique Blanchard
- Laboratory of Glycodesign and Glycoanalytics, Institute for Laboratory Medicine, Clinical Chemistry and Pathobiochemistry, Charité-University Medicine Berlin, Berlin, Germany
| | - Arnd Petersen
- Division of Clinical & Molecular Allergology, Research Center Borstel, Airway Research Center North (ARCN), German Center for Lung Research (DZL), Borstel, Germany
| | - Timo Gemoll
- Section for Translational Surgical Oncology & Biobanking, Department of Surgery, University of Lübeck & Univesity Medical Center Schleswig Holstein, Lübeck, Germany
| | - Jens K Habermann
- Section for Translational Surgical Oncology & Biobanking, Department of Surgery, University of Lübeck & Univesity Medical Center Schleswig Holstein, Lübeck, Germany
| | - Frank Petersen
- Division of Biochemical Immunology, Research Center Borstel, Leibniz-Center for Medicine and Biosciences, Borstel, Germany
| | - Andreas Nandy
- Research and Preclinical Development, Allergopharma GmbH & Co. KG, a business of Merck, Darmstadt, Germany
| | - Helga Kahlert
- Research and Preclinical Development, Allergopharma GmbH & Co. KG, a business of Merck, Darmstadt, Germany
| | - Michael Hertl
- Department of Dermatology and Allergology, Philipps University Marburg, Marburg, Germany
| | - Manfred Wuhrer
- Center for Proteomics and Metabolomics, Leiden University Medical Center, Leiden, The Netherlands
| | - Wolfgang Pfützner
- Department of Dermatology and Allergology, Philipps University Marburg, Marburg, Germany
| | - Uta Jappe
- Division of Clinical & Molecular Allergology, Research Center Borstel, Airway Research Center North (ARCN), German Center for Lung Research (DZL), Borstel, Germany; Interdisciplinary Allergy Outpatient Clinic, Department of Internal Medicine, University of Lübeck, Lübeck, Germany
| | - Fred D Finkelman
- Division of Immunology, Allergy and Rheumatology, Department of Medicine, University of Cincinnati College of Medicine, Cincinnati, Ohio; Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio; Department of Medicine, Cincinnati Veterans Affairs Medical Center, Cincinnati, Ohio
| | - Marc Ehlers
- Laboratories of Immunology and Antibody Glycan Analysis, Institute for Nutrition Medicine, University of Lübeck & University Medical Center Schleswig Holstein, Lübeck, Germany.
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