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Mackin SR, Sariol A, Diamond MS. Antibody-mediated control mechanisms of viral infections. Immunol Rev 2024. [PMID: 39162394 DOI: 10.1111/imr.13383] [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] [Indexed: 08/21/2024]
Abstract
Antibodies generated after vaccination or natural pathogen exposure are essential mediators of protection against many infections. Most studies with viruses have focused on antibody neutralization, in which protection is conferred by the fragment antigen binding region (Fab) through targeting of different steps in the viral lifecycle including attachment, internalization, fusion, and egress. Beyond neutralization, the fragment crystallizable (Fc) region of antibodies can integrate innate and adaptive immune responses by engaging complement components and distinct Fc gamma receptors (FcγR) on different host immune cells. In this review, we discuss recent advances in our understanding of antibody neutralization and Fc effector functions, and the assays used to measure them. Additionally, we describe the contexts in which these mechanisms are associated with protection against viruses and highlight how Fc-FcγR interactions can improve the potency of antibody-based therapies.
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Affiliation(s)
- Samantha R Mackin
- Department of Medicine, Washington University School of Medicine, St. Louis, Missouri, USA
- Department of Pathology & Immunology and Center for Genome Sciences, Lab & Genomic Medicine, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Alan Sariol
- Department of Medicine, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Michael S Diamond
- Department of Medicine, Washington University School of Medicine, St. Louis, Missouri, USA
- Department of Pathology & Immunology and Center for Genome Sciences, Lab & Genomic Medicine, Washington University School of Medicine, St. Louis, Missouri, USA
- Department of Molecular Microbiology, Washington University School of Medicine, St. Louis, Missouri, USA
- Andrew M. and Jane M. Bursky the Center for Human Immunology and Immunotherapy Programs, Washington University School of Medicine, St. Louis, Missouri, USA
- Center for Vaccines and Immunity to Microbial Pathogens, Washington University School of Medicine, St. Louis, Missouri, USA
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2
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Ma H, Liang X, Li SS, Li W, Li TF. The role of anti-citrullinated protein antibody in pathogenesis of RA. Clin Exp Med 2024; 24:153. [PMID: 38972923 PMCID: PMC11228005 DOI: 10.1007/s10238-024-01359-3] [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: 12/23/2023] [Accepted: 04/21/2024] [Indexed: 07/09/2024]
Abstract
Rheumatoid arthritis (RA) is a common autoimmune rheumatic disease that causes chronic synovitis, bone erosion, and joint destruction. The autoantigens in RA include a wide array of posttranslational modified proteins, such as citrullinated proteins catalyzed by peptidyl arginine deiminase4a. Pathogenic anti-citrullinated protein antibodies (ACPAs) directed against a variety of citrullinated epitopes are abundant both in plasma and synovial fluid of RA patients. ACPAs play an important role in the onset and progression of RA. Intensive and extensive studies are being conducted to unveil the mechanisms of RA pathogenesis and evaluate the efficacy of some investigative drugs. In this review, we focus on the formation and pathogenic function of ACPAs.
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Affiliation(s)
- Hang Ma
- Department of Rheumatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
- Academy of Medical Sciences, Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Xu Liang
- Department of Rheumatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
- Academy of Medical Sciences, Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Shan-Shan Li
- Department of Rheumatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
- Academy of Medical Sciences, Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Wei Li
- Department of Rheumatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Tian-Fang Li
- Department of Rheumatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China.
- Academy of Medical Sciences, Zhengzhou University, Zhengzhou, 450052, Henan, China.
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3
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Schwedler C, Grzeski M, Kappert K, Rust J, Heymann G, Hoppe B, Blanchard V. Coronavirus Disease 2019-Related Alterations of Total and Anti-Spike IgG Glycosylation in Relation to Age and Anti-Spike IgG Titer. Front Microbiol 2022; 13:775186. [PMID: 35495660 PMCID: PMC9051488 DOI: 10.3389/fmicb.2022.775186] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Accepted: 03/02/2022] [Indexed: 01/02/2023] Open
Abstract
The coronavirus disease 2019 (COVID-19) caused by the severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) has been affecting the world since January 2020 and has caused millions of deaths. To gain a better insight into molecular changes underlying the COVID-19 disease, we investigated here the N-glycosylation of three immunoglobulin G (IgG) fractions isolated from plasma of 35 severe COVID-19 patients, namely total IgG1, total IgG2, and anti-Spike IgG, by means of MALDI-TOF-MS. All analyses were performed at the glycopeptide level to assure subclass- and site-specific information. For each COVID-19 patient, the analyses included three blood withdrawals at different time-points of hospitalization, which allowed profiling longitudinal alterations in IgG glycosylation. The COVID-19 patients presented altered IgG N-glycosylation profiles in all investigated IgG fractions. The most pronounced COVID-19-related changes were observed in the glycosylation profiles of antigen-specific anti-Spike IgG1. Anti-Spike IgG1 fucosylation and galactosylation showed the strongest variation during the disease course, with the difference in anti-Spike IgG1 fucosylation being significantly correlated with patients’ age. Decreases in anti-Spike IgG1 galactosylation and sialylation in the course of the disease were found to be significantly correlated with the difference in anti-Spike IgG plasma concentration. The present findings suggest that patients’ age and anti-S IgG abundance might influence IgG N-glycosylation alterations occurring in COVID-19.
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Affiliation(s)
- Christian Schwedler
- Institute of Diagnostic Laboratory Medicine, Clinical Chemistry and Pathobiochemistry, Charité – Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin, Germany
- German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ), Heidelberg, Germany
- *Correspondence: Christian Schwedler, ,
| | - Marta Grzeski
- Institute of Diagnostic Laboratory Medicine, Clinical Chemistry and Pathobiochemistry, Charité – Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Kai Kappert
- Institute of Diagnostic Laboratory Medicine, Clinical Chemistry and Pathobiochemistry, Charité – Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin, Germany
- Labor Berlin – Charité Vivantes GmbH, Berlin, Germany
| | - Jörn Rust
- Department of Anaesthesiology, Critical Care, and Pain Medicine, BG Klinikum Unfallkrankenhaus Berlin, Berlin, Germany
| | - Guido Heymann
- Institute of Laboratory Medicine, BG Klinikum Unfallkrankenhaus Berlin, Berlin, Germany
| | - Berthold Hoppe
- Institute of Diagnostic Laboratory Medicine, Clinical Chemistry and Pathobiochemistry, Charité – Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin, Germany
- Institute of Laboratory Medicine, BG Klinikum Unfallkrankenhaus Berlin, Berlin, Germany
| | - Véronique Blanchard
- Institute of Diagnostic Laboratory Medicine, Clinical Chemistry and Pathobiochemistry, Charité – Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin, Germany
- Véronique Blanchard,
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4
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Xu X, Balmer L, Chen Z, Mahara G, Lin L. The role of IgG N-galactosylation in Spondyloarthritis. TRANSLATIONAL METABOLIC SYNDROME RESEARCH 2022. [DOI: 10.1016/j.tmsr.2022.01.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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5
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Glycomic-Based Biomarkers for Ovarian Cancer: Advances and Challenges. Diagnostics (Basel) 2021; 11:diagnostics11040643. [PMID: 33916250 PMCID: PMC8065431 DOI: 10.3390/diagnostics11040643] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 03/25/2021] [Accepted: 03/25/2021] [Indexed: 01/10/2023] Open
Abstract
Ovarian cancer remains one of the most common causes of death among gynecological malignancies afflicting women worldwide. Among the gynecological cancers, cervical and endometrial cancers confer the greatest burden to the developing and the developed world, respectively; however, the overall survival rates for patients with ovarian cancer are worse than the two aforementioned. The majority of patients with ovarian cancer are diagnosed at an advanced stage when cancer has metastasized to different body sites and the cure rates, including the five-year survival, are significantly diminished. The delay in diagnosis is due to the absence of or unspecific symptoms at the initial stages of cancer as well as a lack of effective screening and diagnostic biomarkers that can detect cancer at the early stages. This, therefore, provides an imperative to prospect for new biomarkers that will provide early diagnostic strategies allowing timely mitigative interventions. Glycosylation is a protein post-translational modification that is modified in cancer patients. In the current review, we document the state-of-the-art of blood-based glycomic biomarkers for early diagnosis of ovarian cancer and the technologies currently used in this endeavor.
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6
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Zhou X, Motta F, Selmi C, Ridgway WM, Gershwin ME, Zhang W. Antibody glycosylation in autoimmune diseases. Autoimmun Rev 2021; 20:102804. [PMID: 33727152 DOI: 10.1016/j.autrev.2021.102804] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2021] [Accepted: 02/13/2021] [Indexed: 02/07/2023]
Abstract
The glycosylation of the fragment crystallizable (Fc) region of immunoglobulins (Ig) is critical for the modulation of antibody effects on inflammation. Moreover, antibody glycosylation may induce pathologic modifications and ultimately contribute to the development of autoimmune diseases. Thanks to progress in the analysis of glycosylation, more data are available on IgG and its subclass structures in the context of autoimmune diseases. In this review, we focused on the impact of Ig glycosylation in autoimmunity, describing how it modulates the immune response and how glycome profiles can be used as biomarkers of disease activity. The analysis of antibody glycosylation demonstrated specific features in human autoimmune and chronic inflammatory conditions, including rheumatoid arthritis, systemic lupus erythematosus, inflammatory bowel disease and autoimmune liver diseases, among others. Within the same disease, different patterns are associated with disease severity and treatment options. Future research may increase the information available on the distinct glycome profiles and expand their potential role as biomarkers and as targets for treatment, ultimately favoring an individualized approach.
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Affiliation(s)
- Xing Zhou
- Division of Rheumatology, Allergy and Clinical Immunology, University of California, Davis, CA 95616, USA; Department of Hepatobiliary Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Francesca Motta
- Division of Rheumatology and Clinical Immunology, Humanitas Clinical and Research Center-IRCCS, Rozzano, Milan, Italy; Department of Biomedical Sciences, Humanitas University, Rozzano, Milan, Italy
| | - Carlo Selmi
- Division of Rheumatology and Clinical Immunology, Humanitas Clinical and Research Center-IRCCS, Rozzano, Milan, Italy; Department of Biomedical Sciences, Humanitas University, Rozzano, Milan, Italy
| | - William M Ridgway
- Division of Rheumatology, Allergy and Clinical Immunology, University of California, Davis, CA 95616, USA
| | - M Eric Gershwin
- Division of Rheumatology, Allergy and Clinical Immunology, University of California, Davis, CA 95616, USA.
| | - Weici Zhang
- Division of Rheumatology, Allergy and Clinical Immunology, University of California, Davis, CA 95616, USA.
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7
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Neuraminidase Inhibitor Zanamivir Ameliorates Collagen-Induced Arthritis. Int J Mol Sci 2021; 22:ijms22031428. [PMID: 33572654 PMCID: PMC7867009 DOI: 10.3390/ijms22031428] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2020] [Revised: 01/27/2021] [Accepted: 01/27/2021] [Indexed: 01/20/2023] Open
Abstract
Altered sialylation patterns play a role in chronic autoimmune diseases such as rheumatoid arthritis (RA). Recent studies have shown the pro-inflammatory activities of immunoglobulins (Igs) with desialylated sugar moieties. The role of neuraminidases (NEUs), enzymes which are responsible for the cleavage of terminal sialic acids (SA) from sialoglycoconjugates, is not fully understood in RA. We investigated the impact of zanamivir, an inhibitor of the influenza virus neuraminidase, and mammalian NEU2/3 on clinical outcomes in experimental arthritides studies. The severity of arthritis was monitored and IgG titers were measured by ELISA. (2,6)-linked SA was determined on IgG by ELISA and on cell surfaces by flow cytometry. Zanamivir at a dose of 100 mg/kg (zana-100) significantly ameliorated collagen-induced arthritis (CIA), whereas zana-100 was ineffective in serum transfer-induced arthritis. Systemic zana-100 treatment reduced the number of splenic CD138+/TACI+ plasma cells and CD19+ B cells, which was associated with lower IgG levels and an increased sialylation status of IgG compared to controls. Our data reveal the contribution of NEU2/3 in CIA. Zanamivir down-modulated the T and B cell-dependent humoral immune response and induced an anti-inflammatory milieu by inhibiting sialic acid degradation. We suggest that neuraminidases might represent a promising therapeutic target for RA and possibly also for other antibody-mediated autoimmune diseases.
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8
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Dall'Olio F, Malagolini N. Immunoglobulin G Glycosylation Changes in Aging and Other Inflammatory Conditions. EXPERIENTIA SUPPLEMENTUM (2012) 2021; 112:303-340. [PMID: 34687015 DOI: 10.1007/978-3-030-76912-3_10] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Among the multiple roles played by protein glycosylation, the fine regulation of biological interactions is one of the most important. The asparagine 297 (Asn297) of IgG heavy chains is decorated by a diantennary glycan bearing a number of galactose and sialic acid residues on the branches ranging from 0 to 2. In addition, the structure can present core-linked fucose and/or a bisecting GlcNAc. In many inflammatory and autoimmune conditions, as well as in metabolic, cardiovascular, infectious, and neoplastic diseases, the IgG Asn297-linked glycan becomes less sialylated and less galactosylated, leading to increased expression of glycans terminating with GlcNAc. These conditions alter also the presence of core-fucose and bisecting GlcNAc. Importantly, similar glycomic alterations are observed in aging. The common condition, shared by the above-mentioned pathological conditions and aging, is a low-grade, chronic, asymptomatic inflammatory state which, in the case of aging, is known as inflammaging. Glycomic alterations associated with inflammatory diseases often precede disease onset and follow remission. The aberrantly glycosylated IgG glycans associated with inflammation and aging can sustain inflammation through different mechanisms, fueling a vicious loop. These include complement activation, Fcγ receptor binding, binding to lectin receptors on antigen-presenting cells, and autoantibody reactivity. The complex molecular bases of the glycomic changes associated with inflammation and aging are still poorly understood.
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Affiliation(s)
- Fabio Dall'Olio
- Department of Experimental, Diagnostic and Specialty Medicine (DIMES), University of Bologna, Bologna, Italy.
| | - Nadia Malagolini
- Department of Experimental, Diagnostic and Specialty Medicine (DIMES), University of Bologna, Bologna, Italy
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9
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Affiliation(s)
- Khara Lucius
- Khara Lucius, ND, FABNO, is a naturopathic doctor at the Center for Integrative Medicine, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
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10
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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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11
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Autoantibodies as Diagnostic Markers and Mediator of Joint Inflammation in Arthritis. Mediators Inflamm 2019; 2019:6363086. [PMID: 31772505 PMCID: PMC6854956 DOI: 10.1155/2019/6363086] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Accepted: 09/14/2019] [Indexed: 12/11/2022] Open
Abstract
Rheumatoid arthritis is a systemic, polygenic, and multifactorial syndrome characterized by erosive polyarthritis, damage to joint architecture, and presence of autoantibodies against several self-structures in the serum and synovial fluid. These autoantibodies (anticitrullinated protein/peptide antibodies (ACPAs), rheumatoid factors (RF), anticollagen type II antibodies, antiglucose-6 phosphate isomerase antibodies, anticarbamylated protein antibodies, and antiacetylated protein antibodies) have different characteristics, diagnostic/prognostic value, and pathological significance in RA patients. Some of these antibodies are present in the patients' serum several years before the onset of clinical disease. Various genetic and environmental factors are associated with autoantibody production against different autoantigenic targets. Both the activating and inhibitory FcγRs and the activation of different complement cascades contribute to the downstream effector functions in the antibody-mediated disease pathology. Interplay between several molecules (cytokines, chemokines, proteases, and inflammatory mediators) culminates in causing damage to the articular cartilage and bones. In addition, autoantibodies are proven to be useful disease markers for RA, and different diagnostic tools are being developed for early diagnosis of the clinical disease. Recently, a direct link was proposed between the presence of autoantibodies and bone erosion as well as in the induction of pain. In this review, the diagnostic value of autoantibodies, their synthesis and function as a mediator of joint inflammation, and the significance of IgG-Fc glycosylation are discussed.
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12
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Häupl T, Skapenko A, Hoppe B, Skriner K, Burkhardt H, Poddubnyy D, Ohrndorf S, Sewerin P, Mansmann U, Stuhlmüller B, Schulze-Koops H, Burmester GR. [Biomarkers and imaging for diagnosis and stratification of rheumatoid arthritis and spondylarthritis in the BMBF consortium ArthroMark]. Z Rheumatol 2019; 77:16-23. [PMID: 29691690 DOI: 10.1007/s00393-018-0458-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Rheumatic diseases are among the most common chronic inflammatory disorders. Besides severe pain and progressive destruction of the joints, rheumatoid arthritis (RA), spondyloarthritides (SpA) and psoriatic arthritis (PsA) impair working ability, reduce quality of life and if treated insufficiently may enhance mortality. With the introduction of biologics to treat these diseases, the demand for biomarkers of early diagnosis and therapeutic stratification has been growing continuously. The main goal of the consortium ArthroMark is to identify new biomarkers and to apply modern imaging technologies for diagnosis, follow-up assessment and stratification of patients with RA, SpA and PsA. With the development of new biomarkers for these diseases, the ArthroMark project contributes to research in chronic diseases of the musculoskeletal system. The cooperation between different national centers will utilize site-specific resources, such as biobanks and clinical studies for sharing and gainful networking of individual core areas in biomarker analysis. Joint data management and harmonization of data assessment as well as best practice characterization of patients with new imaging technologies will optimize quality of marker validation.
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Affiliation(s)
- T Häupl
- Medizinische Klinik mit Schwerpunkt Rheumatologie und Klinische Immunologie, Charité-Universitätsmedizin Berlin, Campus Mitte (CCM), Charitéplatz 1, 10117, Berlin, Deutschland.
| | - A Skapenko
- Sektion Rheumatologie und Klinische Immunologie, Medizinische Klinik und Poliklinik IV, Ludwig-Maximilians-Universität, München, Deutschland
| | - B Hoppe
- Zentralinstitut für Laboratoriumsmedizin und Pathobiochemie, Charité, Berlin, Deutschland
| | - K Skriner
- Medizinische Klinik mit Schwerpunkt Rheumatologie und Klinische Immunologie, Charité-Universitätsmedizin Berlin, Campus Mitte (CCM), Charitéplatz 1, 10117, Berlin, Deutschland
| | - H Burkhardt
- Abteilung für Rheumatologie, Johann-Wolfgang-Goethe-Universität, Frankfurt, Deutschland
| | - D Poddubnyy
- Medizinische Klinik für Gastroenterologie, Infektiologie und Rheumatologie, Charité-Universitätsmedizin Berlin, Campus Benjamin Franklin (CBF), Berlin, Deutschland
| | - S Ohrndorf
- Medizinische Klinik mit Schwerpunkt Rheumatologie und Klinische Immunologie, Charité-Universitätsmedizin Berlin, Campus Mitte (CCM), Charitéplatz 1, 10117, Berlin, Deutschland
| | - P Sewerin
- Medizinische Klinik für Endokrinologie, Diabetologie und Rheumatologie, Heinrich-Heine-Universität, Düsseldorf, Deutschland
| | - U Mansmann
- Institut für Medizinische Informationsverarbeitung, Biometrie und Epidemiologie (IBE), Ludwig-Maximilians-Universität, München, Deutschland
| | - B Stuhlmüller
- Medizinische Klinik mit Schwerpunkt Rheumatologie und Klinische Immunologie, Charité-Universitätsmedizin Berlin, Campus Mitte (CCM), Charitéplatz 1, 10117, Berlin, Deutschland
| | - H Schulze-Koops
- Sektion Rheumatologie und Klinische Immunologie, Medizinische Klinik und Poliklinik IV, Ludwig-Maximilians-Universität, München, Deutschland
| | - G-R Burmester
- Medizinische Klinik mit Schwerpunkt Rheumatologie und Klinische Immunologie, Charité-Universitätsmedizin Berlin, Campus Mitte (CCM), Charitéplatz 1, 10117, Berlin, Deutschland
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13
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Measurement of Neutral and Sialylated IgG N-Glycome at Asn-297 by CE-LIF to Assess Hypogalactosylation in Rheumatoid Arthritis. Methods Mol Biol 2019; 1972:77-93. [PMID: 30847785 DOI: 10.1007/978-1-4939-9213-3_6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Modulations in immunoglobulin G (IgG) N-glycosylation have been observed in many human diseases including chronic inflammatory diseases such as rheumatoid arthritis and also cancer. In this chapter, we describe how to determine hypogalactosylation for clinical samples, namely the sample preparation of IgG N-glycans at Asn-297 as well as the measurement of neutral and sialylated N-glycans by capillary electrophoresis coupled with laser-induced fluorescence (CE-LIF).This semiautomated protocol describes the isolation polyclonal antibodies from serum, the separation of IgG-Fc glycopeptides from IgG antigen-binding fragment by pepsin digestion. Afterward, enzymatically released IgG-Fc N-glycans are cleaned up using a polyaromatic adsorbent resin followed by carbon purification. Sialic acids are then derivatized prior to glycan labeling. As a result, the agalactosylated N-glycan A2 does not co-migrate with sialylated N-glycans, which refines the measurement of hypogalactosylation by CE-LIF.
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