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Raposo B, Klareskog L, Robinson WH, Malmström V, Grönwall C. The peculiar features, diversity and impact of citrulline-reactive autoantibodies. Nat Rev Rheumatol 2024; 20:399-416. [PMID: 38858604 DOI: 10.1038/s41584-024-01124-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/10/2024] [Indexed: 06/12/2024]
Abstract
Since entering the stage 25 years ago as a highly specific serological biomarker for rheumatoid arthritis, anti-citrullinated protein antibodies (ACPAs) have been a topic of extensive research. This hallmark B cell response arises years before disease onset, displays interpatient autoantigen variability, and is associated with poor clinical outcomes. Technological and scientific advances have revealed broad clonal diversity and intriguing features including high levels of somatic hypermutation, variable-domain N-linked glycosylation, hapten-like peptide interactions, and clone-specific multireactivity to citrullinated, carbamylated and acetylated epitopes. ACPAs have been found in different isotypes and subclasses, in both circulation and tissue, and are secreted by both plasmablasts and long-lived plasma cells. Notably, although some disease-promoting features have been reported, results now demonstrate that certain monoclonal ACPAs therapeutically block arthritis and inflammation in mouse models. A wealth of functional studies using patient-derived polyclonal and monoclonal antibodies have provided evidence for pathogenic and protective effects of ACPAs in the context of arthritis. To understand the roles of ACPAs, one needs to consider their immunological properties by incorporating different facets such as rheumatoid arthritis B cell biology, environmental triggers and chronic antigen exposure. The emerging picture points to a complex role of citrulline-reactive autoantibodies, in which the diversity and dynamics of antibody clones could determine clinical progression and manifestations.
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Affiliation(s)
- Bruno Raposo
- Department of Medicine, Division of Rheumatology, Center for Molecular Medicine, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - Lars Klareskog
- Department of Medicine, Division of Rheumatology, Center for Molecular Medicine, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - William H Robinson
- Division of Immunology and Rheumatology, Department of Medicine, Stanford University School of Medicine, Stanford, CA, USA
- VA Palo Alto Health Care System, Palo Alto, CA, USA
| | - Vivianne Malmström
- Department of Medicine, Division of Rheumatology, Center for Molecular Medicine, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden.
| | - Caroline Grönwall
- Department of Medicine, Division of Rheumatology, Center for Molecular Medicine, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
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2
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Rappazzo CG, Fernández-Quintero ML, Mayer A, Wu NC, Greiff V, Guthmiller JJ. Defining and Studying B Cell Receptor and TCR Interactions. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2023; 211:311-322. [PMID: 37459189 PMCID: PMC10495106 DOI: 10.4049/jimmunol.2300136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Accepted: 04/15/2023] [Indexed: 07/20/2023]
Abstract
BCRs (Abs) and TCRs (or adaptive immune receptors [AIRs]) are the means by which the adaptive immune system recognizes foreign and self-antigens, playing an integral part in host defense, as well as the emergence of autoimmunity. Importantly, the interaction between AIRs and their cognate Ags defies a simple key-in-lock paradigm and is instead a complex many-to-many mapping between an individual's massively diverse AIR repertoire, and a similarly diverse antigenic space. Understanding how adaptive immunity balances specificity with epitopic coverage is a key challenge for the field, and terms such as broad specificity, cross-reactivity, and polyreactivity remain ill-defined and are used inconsistently. In this Immunology Notes and Resources article, a group of experimental, structural, and computational immunologists define commonly used terms associated with AIR binding, describe methodologies to study these binding modes, as well as highlight the implications of these different binding modes for therapeutic design.
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Affiliation(s)
| | | | - Andreas Mayer
- Division of Infection and Immunity, University College London, London WC1E 6BT, UK
| | - Nicholas C. Wu
- Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Victor Greiff
- Department of Immunology, University of Oslo and Oslo University Hospital, 0372 Oslo, Norway
| | - Jenna J. Guthmiller
- Department of Immunology and Microbiology, University of Colorado Anschutz Medical Campus, Aurora, CO 80045
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3
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Pennell M, Rodriguez OL, Watson CT, Greiff V. The evolutionary and functional significance of germline immunoglobulin gene variation. Trends Immunol 2023; 44:7-21. [PMID: 36470826 DOI: 10.1016/j.it.2022.11.001] [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: 10/25/2022] [Accepted: 11/07/2022] [Indexed: 12/04/2022]
Abstract
The recombination between immunoglobulin (IG) gene segments determines an individual's naïve antibody repertoire and, consequently, (auto)antigen recognition. Emerging evidence suggests that mammalian IG germline variation impacts humoral immune responses associated with vaccination, infection, and autoimmunity - from the molecular level of epitope specificity, up to profound changes in the architecture of antibody repertoires. These links between IG germline variants and immunophenotype raise the question on the evolutionary causes and consequences of diversity within IG loci. We discuss why the extreme diversity in IG loci remains a mystery, why resolving this is important for the design of more effective vaccines and therapeutics, and how recent evidence from multiple lines of inquiry may help us do so.
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Affiliation(s)
- Matt Pennell
- Department of Quantitative and Computational Biology, University of Southern California, Los Angeles, CA, USA; Department of Biological Sciences, University of Southern California, Los Angeles, CA, USA.
| | - Oscar L Rodriguez
- Department of Biochemistry and Molecular Genetics, University of Louisville School of Medicine, Louisville, KY, USA
| | - Corey T Watson
- Department of Biochemistry and Molecular Genetics, University of Louisville School of Medicine, Louisville, KY, USA
| | - Victor Greiff
- Department of Immunology, University of Oslo and Oslo University Hospital, Oslo, Norway.
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4
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He C, Luo H, Coelho A, Liu M, Li Q, Xu J, Krämer A, Malin S, Yuan Z, Holmdahl R. NCF4 dependent intracellular reactive oxygen species regulate plasma cell formation. Redox Biol 2022; 56:102422. [PMID: 36095971 PMCID: PMC9482113 DOI: 10.1016/j.redox.2022.102422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 07/12/2022] [Accepted: 07/22/2022] [Indexed: 11/30/2022] Open
Abstract
Defective reactive oxygen species (ROS) production by genetically determined variants of the NADPH oxidase 2 (NOX2) complex component, NCF4, leads to enhanced production of autoantibodies to collagen type II (COL2) and severe collagen-induced arthritis (CIA) in mice. To further understand this process, we used mice harboring a mutation in the lipid endosomal membrane binding site (R58A) of NCF4 subunit. This mutation did not affect the extracellular ROS responses but showed instead decreased intracellular responses following B cell stimulation. Immunization with COL2 led to severe arthritis with increased antibody levels in Ncf458A mutated animals without significant effects on antigen presentation, autoreactive T cell activation and germinal center formation. Instead, plasma cell formation was enhanced and had altered CXCR3/CXCR4 expression. This B cell intrinsic effect was further confirmed with chimeric B cell transfer experiments and in vitro LPS or CD40L with anti-IgM stimulation. We conclude that NCF4 regulates the terminal differentiation of B cells to plasma cells through intracellular ROS. Ncf4R58A selectively affects intracellular ROS production after stimulation. Decreased intracellular ROS in B cell promotes plasma cell formation intrinsically. BCR stimulation induced NOX2 complex-ROS regulates CXCR3 expression on plasma cell.
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Affiliation(s)
- Chang He
- Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, PR China; Division of Medical Inflammation Research, Department of Medical Biochemistry and Biophysics, Karolinska Institute, Stockholm, Sweden; Department of Cardiovascular Medicine, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, PR China
| | - Huqiao Luo
- Division of Medical Inflammation Research, Department of Medical Biochemistry and Biophysics, Karolinska Institute, Stockholm, Sweden
| | - Ana Coelho
- Division of Medical Inflammation Research, Department of Medical Biochemistry and Biophysics, Karolinska Institute, Stockholm, Sweden
| | - Meng Liu
- Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, PR China; Division of Medical Inflammation Research, Department of Medical Biochemistry and Biophysics, Karolinska Institute, Stockholm, Sweden; National Joint Engineering Research Center of Biodiagnostics and Biotherapy, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, PR China
| | - Qijing Li
- Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, PR China; Division of Medical Inflammation Research, Department of Medical Biochemistry and Biophysics, Karolinska Institute, Stockholm, Sweden; Department of Hematology, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, PR China
| | - Jing Xu
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, PR China
| | - Alexander Krämer
- Division of Medical Inflammation Research, Department of Medical Biochemistry and Biophysics, Karolinska Institute, Stockholm, Sweden
| | - Stephen Malin
- Department of Medicine Solna (MedS) Center for Molecular Medicine, Karolinska Institute, Stockholm, Sweden
| | - Zuyi Yuan
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, PR China
| | - Rikard Holmdahl
- Division of Medical Inflammation Research, Department of Medical Biochemistry and Biophysics, Karolinska Institute, Stockholm, Sweden; National Joint Engineering Research Center of Biodiagnostics and Biotherapy, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, PR China.
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5
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Collins AM, Watson CT, Breden F. Immunoglobulin genes, reproductive isolation and vertebrate speciation. Immunol Cell Biol 2022; 100:497-506. [PMID: 35781330 PMCID: PMC9545137 DOI: 10.1111/imcb.12567] [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: 03/24/2022] [Revised: 06/19/2022] [Accepted: 06/21/2022] [Indexed: 12/15/2022]
Abstract
Reproductive isolation drives the formation of new species, and many genes contribute to this through Dobzhansky–Muller incompatibilities (DMIs). These incompatibilities occur when gene divergence affects loci encoding interacting products such as receptors and their ligands. We suggest here that the nature of vertebrate immunoglobulin (IG) genes must make them prone to DMIs. The genes of these complex loci form functional genes through the process of recombination, giving rise to a repertoire of heterodimeric receptors of incredible diversity. This repertoire, within individuals and within species, must defend against pathogens but must also avoid pathogenic self‐reactivity. We suggest that this avoidance of autoimmunity is only achieved through a coordination of evolution between heavy‐ and light‐chain genes, and between these genes and the rest of the genome. Without coordinated evolution, the hybrid offspring of two diverging populations will carry a heavy burden of DMIs, resulting in a loss of fitness. Critical incompatibilities could manifest as incompatibilities between a mother and her divergent offspring. During fetal development, biochemical differences between the parents of hybrid offspring could make their offspring a target of the maternal immune system. This hypothesis was conceived in the light of recent insights into the population genetics of IG genes. This has suggested that antibody genes are probably as susceptible to evolutionary forces as other parts of the genome. Further repertoire studies in human and nonhuman species should now help determine whether antibody genes have been part of the evolutionary forces that drive the development of species.
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Affiliation(s)
- Andrew M Collins
- School of Biotechnology and Biomolecular Sciences University of New South Wales Sydney NSW Australia
| | - Corey T Watson
- Department of Biochemistry and Molecular Genetics University of Louisville School of Medicine Louisville KY USA
| | - Felix Breden
- Department of Biological Sciences Simon Fraser University Burnaby BC Canada
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6
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Liang P, Li Y, Xu R, Nandakumar KS, Stawikowska R, Fields GB, Holmdahl R. Characterization of chronic relapsing antibody mediated arthritis in mice with a mutation in Ncf1 causing reduced oxidative burst. MOLECULAR BIOMEDICINE 2022; 3:14. [PMID: 35551534 PMCID: PMC9098740 DOI: 10.1186/s43556-022-00076-1] [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: 01/24/2022] [Accepted: 04/30/2022] [Indexed: 12/24/2022] Open
Abstract
Rheumatoid arthritis (RA) is a chronic autoimmune disorder affecting joints with a hallmark of autoantibody production. Mannan-enhanced collagen type II (COL2) antibody induced arthritis (mCAIA) in neutrophil cytosolic factor 1(Ncf1) mutation mouse is a chronic disease model imitating RA in mice. In this study, we characterize the chronic phase of mCAIA in Ncf1 mutated (BQ.Ncf1m1j/m1j) mice. Arthritis was induced by an intravenous injection of anti-COL2 monoclonal antibodies on day 0 followed by intra-peritoneal injections of mannan (from Saccharomyces cerevisiae) on days 3 and 65 in BQ.Ncf1m1j/m1j and BQ mice. Bone erosion was analysed by computed tomography (CT) and blood cell phenotypes by flow cytometry. Cytokines and anti-COL2 antibodies were analyzed with multiplex bead-based assays. The arthritis in the Ncf1m1j/m1j mice developed with a chronic and relapsing disease course, which was followed for 200 days and bone erosions of articular joints were evaluated. An increased number of circulating CD11b+ Ly6G+ neutrophils were observed during the chronic phase, together with a higher level of G-CSF (granulocyte colony-stimulating factor) and TNF-α. In conclusion, the chronic relapsing arthritis of mCAIA in the Ncf1m1j/m1j mice develop bone erosions associated with a sustained neutrophil type of inflammatory responses.
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Affiliation(s)
- Peibin Liang
- Medical Inflammation Research, Pharmacology School, Southern Medical University, Guangzhou, 510515, China
| | - Yanpeng Li
- Medical Inflammation Research, Pharmacology School, Southern Medical University, Guangzhou, 510515, China
| | - Rui Xu
- Medical Inflammation Research, Pharmacology School, Southern Medical University, Guangzhou, 510515, China
| | - Kutty Selva Nandakumar
- Medical Inflammation Research, Pharmacology School, Southern Medical University, Guangzhou, 510515, China
| | - Roma Stawikowska
- Department of Chemistry & Biochemistry and I-HEALTH, Florida Atlantic University, Jupiter, FL, USA
| | - Gregg B Fields
- Department of Chemistry & Biochemistry and I-HEALTH, Florida Atlantic University, Jupiter, FL, USA
| | - Rikard Holmdahl
- Medical Inflammation Research, Pharmacology School, Southern Medical University, Guangzhou, 510515, China. .,Medical Inflammation Research, Department of Biochemistry and Biophysics, Karolinska Institute, SE-17177, Stockholm, Sweden.
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7
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Cardozo T, Cardozo L, Boutjdir M. Autoantibody:Autoantigen Competitor Decoys: Application to Cardiac Phenotypes. Front Immunol 2022; 13:812649. [PMID: 35154130 PMCID: PMC8832015 DOI: 10.3389/fimmu.2022.812649] [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: 11/10/2021] [Accepted: 01/12/2022] [Indexed: 01/05/2023] Open
Abstract
Autoimmune diseases are often associated with autoantibodies that abnormally target self-antigens (autoantigens). An intuitive therapeutic strategy for diseases caused by aAbs is to design decoys, or soluble molecules that target the antigen combining site of these aAbs, thereby blocking binding of aAb to self-antigen and subsequent tissue damage. Here, we review the known decoy molecules of these types, discuss newer technological opportunities afforded by monoclonal antibody and structural biology advances, and discuss the challenges to this approach. Recent opportunities relevant to this approach for cardiac phenotypes, specifically Ro-associated long QT syndrome, are discussed.
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Affiliation(s)
- Timothy Cardozo
- Department of Biochemistry and Molecular Pharmacology, New York University (NYU) Grossman School of Medicine, New York, NY, United States
| | - Lila Cardozo
- Department of Biochemistry and Molecular Pharmacology, New York University (NYU) Grossman School of Medicine, New York, NY, United States
| | - Mohamed Boutjdir
- Department of Medicine, New York University (NYU) Grossman School of Medicine, New York, NY, United States.,Department of Medicine, Cell Biology and Pharmacology, State University of New York Downstate Medical Center, New York, NY, United States.,Cardiovascular Research Program, VA New York Harbor Healthcare System, New York, NY, United States
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8
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Ge C, Tong D, Lönnblom E, Liang B, Cai W, Fahlquist-Hagert C, Li T, Kastbom A, Gjertsson I, Dobritzsch D, Holmdahl R. Antibodies to cartilage oligomeric matrix protein are pathogenic in mice and may be clinically relevant in rheumatoid arthritis. Arthritis Rheumatol 2022; 74:961-971. [PMID: 35080151 PMCID: PMC9320966 DOI: 10.1002/art.42072] [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: 08/19/2021] [Revised: 12/20/2021] [Accepted: 01/18/2022] [Indexed: 11/29/2022]
Abstract
Objective Cartilage oligomeric matrix protein (COMP) is an autoantigen in rheumatoid arthritis (RA) and experimental models of arthritis. This study was undertaken to investigate the structure, function, and relevance of anti‐COMP antibodies. Methods We investigated the pathogenicity of monoclonal anti‐COMP antibodies in mice using passive transfer experiments, and we explored the interaction of anti‐COMP antibodies with cartilage using immunohistochemical staining. The interaction of the monoclonal antibody 15A11 in complex with its specific COMP epitope P6 was determined by x‐ray crystallography. An enzyme‐linked immunosorbent assay and a surface plasma resonance technique were used to study the modulation of calcium ion binding to 15A11. The clinical relevance and value of serum IgG specific to the COMP P6 epitope and its citrullinated variants were evaluated in a large Swedish cohort of RA patients. Results The murine monoclonal anti‐COMP antibody 15A11 induced arthritis in naive mice. The crystal structure of the 15A11–P6 complex explained how the antibody could bind to COMP, which can be modulated by calcium ions. Moreover, serum IgG specific to the COMP P6 peptide and its citrullinated variants was detectable at significantly higher levels in RA patients compared to healthy controls and correlated with a higher disease activity score. Conclusion Our findings provide the structural basis for binding a pathogenic anti‐COMP antibody to cartilage. The recognized epitope can be citrullinated, and levels of antibodies to this epitope are elevated in RA patients and correlate with higher disease activity, implicating a pathogenic role of anti‐COMP antibodies in a subset of RA patients.
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Affiliation(s)
- Changrong Ge
- Medical Inflammation Research, Dept of Medical Biochemistry and Biophysics, Karolinska Institute, Solnavägen 9, 171 77, Stockholm, Sweden
| | - Dongmei Tong
- Medical Inflammation Research, Dept of Medical Biochemistry and Biophysics, Karolinska Institute, Solnavägen 9, 171 77, Stockholm, Sweden
| | - Erik Lönnblom
- Medical Inflammation Research, Dept of Medical Biochemistry and Biophysics, Karolinska Institute, Solnavägen 9, 171 77, Stockholm, Sweden
| | - Bibo Liang
- Medical Inflammation Research, Dept of Medical Biochemistry and Biophysics, Karolinska Institute, Solnavägen 9, 171 77, Stockholm, Sweden.,Center for Medical Immunopharmacology Research, Pharmacology School, Southern Medical University, Guangzhou, China
| | - Weiwei Cai
- Medical Inflammation Research, Dept of Medical Biochemistry and Biophysics, Karolinska Institute, Solnavägen 9, 171 77, Stockholm, Sweden
| | - Cecilia Fahlquist-Hagert
- Medical Inflammation Research, Dept of Medical Biochemistry and Biophysics, Karolinska Institute, Solnavägen 9, 171 77, Stockholm, Sweden.,Medical Inflammation Research, MediCity Research Laboratory, University of Turku, Turku, Finland
| | - Taotao Li
- Medical Inflammation Research, Dept of Medical Biochemistry and Biophysics, Karolinska Institute, Solnavägen 9, 171 77, Stockholm, Sweden
| | - Alf Kastbom
- Department of Rheumatology in Östergötland, Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden
| | - Inger Gjertsson
- Department of Rheumatology and Inflammation Research, University of Gothenburg, Gothenburg, Sweden
| | - Doreen Dobritzsch
- Section of Biochemistry, Department of Chemistry-BMC, Uppsala University, 171 23, Uppsala, Sweden
| | - Rikard Holmdahl
- Medical Inflammation Research, Dept of Medical Biochemistry and Biophysics, Karolinska Institute, Solnavägen 9, 171 77, Stockholm, Sweden.,Center for Medical Immunopharmacology Research, Pharmacology School, Southern Medical University, Guangzhou, China.,Medical Inflammation Research, MediCity Research Laboratory, University of Turku, Turku, Finland
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9
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Slabodkin A, Chernigovskaya M, Mikocziova I, Akbar R, Scheffer L, Pavlović M, Bashour H, Snapkov I, Mehta BB, Weber CR, Gutierrez-Marcos J, Sollid LM, Haff IH, Sandve GK, Robert PA, Greiff V. Individualized VDJ recombination predisposes the available Ig sequence space. Genome Res 2021; 31:2209-2224. [PMID: 34815307 PMCID: PMC8647828 DOI: 10.1101/gr.275373.121] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 10/20/2021] [Indexed: 11/25/2022]
Abstract
The process of recombination between variable (V), diversity (D), and joining (J) immunoglobulin (Ig) gene segments determines an individual's naive Ig repertoire and, consequently, (auto)antigen recognition. VDJ recombination follows probabilistic rules that can be modeled statistically. So far, it remains unknown whether VDJ recombination rules differ between individuals. If these rules differed, identical (auto)antigen-specific Ig sequences would be generated with individual-specific probabilities, signifying that the available Ig sequence space is individual specific. We devised a sensitivity-tested distance measure that enables inter-individual comparison of VDJ recombination models. We discovered, accounting for several sources of noise as well as allelic variation in Ig sequencing data, that not only unrelated individuals but also human monozygotic twins and even inbred mice possess statistically distinguishable immunoglobulin recombination models. This suggests that, in addition to genetic, there is also nongenetic modulation of VDJ recombination. We demonstrate that population-wide individualized VDJ recombination can result in orders of magnitude of difference in the probability to generate (auto)antigen-specific Ig sequences. Our findings have implications for immune receptor-based individualized medicine approaches relevant to vaccination, infection, and autoimmunity.
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Affiliation(s)
- Andrei Slabodkin
- Department of Immunology and Oslo University Hospital, University of Oslo, 0372 Oslo, Norway
| | - Maria Chernigovskaya
- Department of Immunology and Oslo University Hospital, University of Oslo, 0372 Oslo, Norway
| | - Ivana Mikocziova
- Department of Immunology and Oslo University Hospital, University of Oslo, 0372 Oslo, Norway
| | - Rahmad Akbar
- Department of Immunology and Oslo University Hospital, University of Oslo, 0372 Oslo, Norway
| | - Lonneke Scheffer
- Department of Informatics, University of Oslo, 0373 Oslo, Norway
| | - Milena Pavlović
- Department of Informatics, University of Oslo, 0373 Oslo, Norway
| | - Habib Bashour
- School of Life Sciences, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - Igor Snapkov
- Department of Immunology and Oslo University Hospital, University of Oslo, 0372 Oslo, Norway
| | - Brij Bhushan Mehta
- Department of Immunology and Oslo University Hospital, University of Oslo, 0372 Oslo, Norway
| | - Cédric R Weber
- Department of Biosystems Science and Engineering, ETH Zurich, 4058 Basel, Switzerland
| | | | - Ludvig M Sollid
- Department of Immunology and Oslo University Hospital, University of Oslo, 0372 Oslo, Norway
| | | | | | - Philippe A Robert
- Department of Immunology and Oslo University Hospital, University of Oslo, 0372 Oslo, Norway
| | - Victor Greiff
- Department of Immunology and Oslo University Hospital, University of Oslo, 0372 Oslo, Norway
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10
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Kenter AL, Watson CT, Spille JH. Igh Locus Polymorphism May Dictate Topological Chromatin Conformation and V Gene Usage in the Ig Repertoire. Front Immunol 2021; 12:682589. [PMID: 34084176 PMCID: PMC8167033 DOI: 10.3389/fimmu.2021.682589] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Accepted: 04/26/2021] [Indexed: 01/08/2023] Open
Abstract
Vast repertoires of unique antigen receptors are created in developing B and T lymphocytes. The antigen receptor loci contain many variable (V), diversity (D) and joining (J) gene segments that are arrayed across very large genomic expanses and are joined to form variable-region exons of expressed immunoglobulins and T cell receptors. This process creates the potential for an organism to respond to large numbers of different pathogens. Here, we consider the possibility that genetic polymorphisms with alterations in a vast array of regulatory elements in the immunoglobulin heavy chain (IgH) locus lead to changes in locus topology and impact immune-repertoire formation.
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Affiliation(s)
- Amy L. Kenter
- Department of Microbiology and Immunology, University of Illinois College of Medicine, Chicago, IL, United States
| | - Corey T. Watson
- Department of Biochemistry and Molecular Genetics, University of Louisville School of Medicine, Louisville, KY, United States
| | - Jan-Hendrik Spille
- Department of Physics, University of Illinois at Chicago, Chicago, IL, United States
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11
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Immunoglobulin germline gene variation and its impact on human disease. Genes Immun 2021; 22:205-217. [PMID: 34175903 PMCID: PMC8234759 DOI: 10.1038/s41435-021-00145-5] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 06/01/2021] [Accepted: 06/10/2021] [Indexed: 02/06/2023]
Abstract
Immunoglobulins (Ig) play an important role in the immune system both when expressed as antigen receptors on the cell surface of B cells and as antibodies secreted into extracellular fluids. The advent of high-throughput sequencing methods has enabled the investigation of human Ig repertoires at unprecedented depth. This has led to the discovery of many previously unreported germline Ig alleles. Moreover, it is becoming clear that convergent and stereotypic antibody responses are common where different individuals recognise defined antigenic epitopes with the use of the same Ig V genes. Thus, germline V gene variation is increasingly being linked to the differential capacity of generating an effective immune response, which might lead to varying disease susceptibility. Here, we review recent evidence of how germline variation in Ig genes impacts the Ig repertoire and its subsequent effects on the adaptive immune response in vaccination, infection, and autoimmunity.
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12
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Grasseau A, Boudigou M, Le Pottier L, Chriti N, Cornec D, Pers JO, Renaudineau Y, Hillion S. Innate B Cells: the Archetype of Protective Immune Cells. Clin Rev Allergy Immunol 2020; 58:92-106. [PMID: 31183788 DOI: 10.1007/s12016-019-08748-7] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The innate B cell (IBC) population is heterogeneous and involved in the primary immune response. IBC functions include a high ability to produce natural antibodies with IgM isotype, the elimination of apoptotic cells, and a capacity to be cognate help to T cells. Among IBC subsets, B-1 cells and marginal zone B cells are the main producers of IgM, act as rapid immune responders that may relocate to follicular lymphoid and differentiate to cytokine and antibody-secreting cells shortly after infection. IBCs functions are highly dependent on their localization site and the nature of their B cell receptor repertoire, suggesting a high plasticity range of different immune responses. In this review, we will describe the nature and functions of the different innate-like B cell subsets, first in mice and then in humans. Besides this, we will emphasize the strong ability of these cells to undertake different protective functions from the first line of defense against pathogens to the regulatory role of the broader immune response.
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Affiliation(s)
- Alexis Grasseau
- UMR1227, Lymphocytes B et Autoimmunité, Université de Brest, INSERM, CHU de Brest, BP824, F29609, Brest, France
| | - Marina Boudigou
- UMR1227, Lymphocytes B et Autoimmunité, Université de Brest, INSERM, CHU de Brest, BP824, F29609, Brest, France
| | - Laëtitia Le Pottier
- UMR1227, Lymphocytes B et Autoimmunité, Université de Brest, INSERM, CHU de Brest, BP824, F29609, Brest, France
| | - Nedra Chriti
- UMR1227, Lymphocytes B et Autoimmunité, Université de Brest, INSERM, CHU de Brest, BP824, F29609, Brest, France
| | - Divi Cornec
- UMR1227, Lymphocytes B et Autoimmunité, Université de Brest, INSERM, CHU de Brest, BP824, F29609, Brest, France
| | - Jacques-Olivier Pers
- UMR1227, Lymphocytes B et Autoimmunité, Université de Brest, INSERM, CHU de Brest, BP824, F29609, Brest, France
| | - Yves Renaudineau
- UMR1227, Lymphocytes B et Autoimmunité, Université de Brest, INSERM, CHU de Brest, BP824, F29609, Brest, France.,Laboratory of Immunology and Immunotherapy, CHU Brest, Brest, France
| | - Sophie Hillion
- UMR1227, Lymphocytes B et Autoimmunité, Université de Brest, INSERM, CHU de Brest, BP824, F29609, Brest, France. .,Laboratory of Immunology and Immunotherapy, CHU Brest, Brest, France.
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13
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Viljanen J, Lönnblom E, Ge C, Yang J, Cheng L, Aldi S, Cai W, Kastbom A, Sjöwall C, Gjertsson I, Holmdahl R, Kihlberg J. Synthesis of an Array of Triple-Helical Peptides from Type II Collagen for Multiplex Analysis of Autoantibodies in Rheumatoid Arthritis. ACS Chem Biol 2020; 15:2605-2615. [PMID: 32909734 DOI: 10.1021/acschembio.0c00680] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Type II collagen (CII) is the most abundant protein in joint cartilage. Antibodies to CII appear around the clinical onset of the autoimmune disease rheumatoid arthritis (RA) in a subset of patients. They target specific epitopes on CII and can be pathogenic or protective. Assays for early detection of such autoantibodies may provide new opportunities for selecting effective treatment strategies of RA. We report the efficient and reproducible assembly of an array of covalently branched native and citrullinated triple helical peptides (THPs) from CII that contain defined autoantibody epitopes. Both monoclonal antibodies and sera from experimental mouse models show a unique reactivity toward the THPs, compared to cyclic peptides containing the epitopes, revealing the importance that the epitopes are displayed in a triple-helical conformation. Importantly, antibodies against three of the THPs that contain major CII epitopes were found to be increased in sera from patients with RA, compared to control persons. These results indicate that such synthetic THPs should be included in multiplex analysis of autoantibodies that are uniquely occurring in individuals with early RA, to provide valuable information on disease prognosis and on what type of therapy should be chosen for individual patients.
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Affiliation(s)
- Johan Viljanen
- Department of Chemistry-BMC, Uppsala University, SE-75123 Uppsala, Sweden
| | - Erik Lönnblom
- Section of Medical Inflammation Research, Department of Medical Biochemistry and Biophysics, Karolinska Institute, SE-17177 Stockholm, Sweden
| | - Changrong Ge
- Section of Medical Inflammation Research, Department of Medical Biochemistry and Biophysics, Karolinska Institute, SE-17177 Stockholm, Sweden
| | - Jie Yang
- Department of Chemistry-BMC, Uppsala University, SE-75123 Uppsala, Sweden
| | - Lei Cheng
- Section of Medical Inflammation Research, Department of Medical Biochemistry and Biophysics, Karolinska Institute, SE-17177 Stockholm, Sweden
| | - Silvia Aldi
- Section of Medical Inflammation Research, Department of Medical Biochemistry and Biophysics, Karolinska Institute, SE-17177 Stockholm, Sweden
| | - Weiwei Cai
- Section of Medical Inflammation Research, Department of Medical Biochemistry and Biophysics, Karolinska Institute, SE-17177 Stockholm, Sweden
| | - Alf Kastbom
- Department of Rheumatology and Department of Biochemical and Clinical Sciences, Linköping University, SE-58185 Linköping, Sweden
| | - Christopher Sjöwall
- Department of Rheumatology and Department of Biochemical and Clinical Sciences, Linköping University, SE-58185 Linköping, Sweden
| | - Inger Gjertsson
- Rheumatology and Inflammation Research, Institute of Medicine, The Sahlgrenska Academy, University of Gothenburg, SE-40530 Gothenburg, Sweden
| | - Rikard Holmdahl
- Section of Medical Inflammation Research, Department of Medical Biochemistry and Biophysics, Karolinska Institute, SE-17177 Stockholm, Sweden
- The Second Affiliated Hospital of Xi’an Jiaotong University (Xibei Hospital), 710004 Xi’an, China
| | - Jan Kihlberg
- Department of Chemistry-BMC, Uppsala University, SE-75123 Uppsala, Sweden
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14
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Li Y, Tong D, Liang P, Lönnblom E, Viljanen J, Xu B, Nandakumar KS, Holmdahl R. Cartilage-binding antibodies initiate joint inflammation and promote chronic erosive arthritis. Arthritis Res Ther 2020; 22:120. [PMID: 32448385 PMCID: PMC7245816 DOI: 10.1186/s13075-020-02169-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Accepted: 03/27/2020] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Antibodies binding to cartilage proteins are present in the blood and synovial fluid of early rheumatoid arthritis patients. In order to develop animal models mimicking the human disease, we have characterized the arthritogenic capacity of monoclonal antibodies directed towards different joint proteins in the cartilage. METHODS Purified antibodies specific to unmodified or citrullinated collagen type II (CII), collagen type XI (CXI), and cartilage oligomeric matrix protein (COMP) were produced as culture supernatant, affinity purified, pooled as antibody cocktails (Cab3 and Cab4), and injected intravenously into mice to induce arthritis. An adjuvant (lipopolysaccharide or mannan) was subsequently injected intraperitoneally on either day 5 or day 60 to enhance arthritis. Antibody binding and complement activation on the cartilage surface were analyzed by immunohistochemical methods. Bone erosions and joint deformations were analyzed by histological assessments, enzyme-linked immunosorbent assays, and micro-CT. Luminex was used to detect CII-triple helical epitope-specific antibody responses. RESULTS The new cartilage antibody cocktails induced an earlier and more severe disease than anti-CII antibody cocktail. Many of the mouse strains used developed severe arthritis with 3 antibodies, binding to collagen II, collagen XI, and cartilage oligomeric matrix protein (the Cab3 cocktail). Two new models of arthritis including Cab3-induced LPS-enhanced arthritis (lpsCAIA) and Cab3-induced mannan-enhanced arthritis (mCAIA) were established, causing severe bone erosions and bone loss, as well as epitope spreading of the B cell response. Cab4, with addition of an antibody to citrullinated collagen II, induced arthritis more efficiently in moderately susceptible C57BL/6 J mice. CONCLUSIONS The new mouse model for RA induced with cartilage antibodies allows studies of chronic development of arthritis and epitope spreading of the autoimmune response and bone erosion.
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Affiliation(s)
- Yanpeng Li
- SMU-KI United Medical Inflammation Center, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, 510515, China
| | - Dongmei Tong
- Medical Inflammation Research, Department of Medical Biochemistry and Biophysics, Karolinska Institute, SE-17177, Stockholm, Sweden
| | - Peibin Liang
- SMU-KI United Medical Inflammation Center, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, 510515, China
| | - Erik Lönnblom
- Medical Inflammation Research, Department of Medical Biochemistry and Biophysics, Karolinska Institute, SE-17177, Stockholm, Sweden
| | - Johan Viljanen
- Department of Chemistry Biomedical Center, Uppsala University, Box 576, SE-75123, Uppsala, Sweden
| | - Bingze Xu
- Medical Inflammation Research, Department of Medical Biochemistry and Biophysics, Karolinska Institute, SE-17177, Stockholm, Sweden
| | - Kutty Selva Nandakumar
- SMU-KI United Medical Inflammation Center, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, 510515, China
| | - Rikard Holmdahl
- SMU-KI United Medical Inflammation Center, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, 510515, China. .,Medical Inflammation Research, Department of Medical Biochemistry and Biophysics, Karolinska Institute, SE-17177, Stockholm, Sweden.
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15
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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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16
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Pape KA, Maul RW, Dileepan T, Paustian AS, Gearhart PJ, Jenkins MK. Naive B Cells with High-Avidity Germline-Encoded Antigen Receptors Produce Persistent IgM + and Transient IgG + Memory B Cells. Immunity 2018; 48:1135-1143.e4. [PMID: 29884459 DOI: 10.1016/j.immuni.2018.04.019] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Revised: 02/20/2018] [Accepted: 04/17/2018] [Indexed: 12/11/2022]
Abstract
Although immune memory often lasts for life, this is not the case for certain vaccines in some individuals. We sought a mechanism for this phenomenon by studying B cell responses to phycoerythrin (PE). PE immunization of mouse strains with Ighb immunoglobulin (Ig) variable heavy chain (VH) genes elicited affinity-matured switched Ig memory B cells that declined with time, while the comparable population from an Igha strain was numerically stable. Ighb strains had larger numbers of PE-specific naive B cells and generated smaller germinal center responses and larger numbers of IgM memory cells than the Igha strain. The properties of PE-specific B cells in Ighb mice correlated with usage of a single VH that afforded high-affinity PE binding in its germline form. These results suggest that some individuals may be genetically predisposed to generate non-canonical memory B cell responses to certain antigens because of avid antigen binding via germline-encoded VH elements.
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Affiliation(s)
- Kathryn A Pape
- Department of Microbiology and Immunology, Center for Immunology, University of Minnesota Medical School, Minneapolis, MN 55455, USA
| | - Robert W Maul
- Laboratory of Molecular Biology and Immunology, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224 USA
| | - Thamotharampillai Dileepan
- Department of Microbiology and Immunology, Center for Immunology, University of Minnesota Medical School, Minneapolis, MN 55455, USA
| | | | - Patricia J Gearhart
- Laboratory of Molecular Biology and Immunology, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224 USA
| | - Marc K Jenkins
- Department of Microbiology and Immunology, Center for Immunology, University of Minnesota Medical School, Minneapolis, MN 55455, USA.
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17
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Nandakumar KS. Targeting IgG in Arthritis: Disease Pathways and Therapeutic Avenues. Int J Mol Sci 2018; 19:E677. [PMID: 29495570 PMCID: PMC5877538 DOI: 10.3390/ijms19030677] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2017] [Revised: 01/25/2018] [Accepted: 02/22/2018] [Indexed: 12/11/2022] Open
Abstract
Rheumatoid arthritis (RA) is a polygenic and multifactorial syndrome. Many complex immunological and genetic interactions are involved in the final outcome of the clinical disease. Autoantibodies (rheumatoid factors, anti-citrullinated peptide/protein antibodies) are present in RA patients' sera for a long time before the onset of clinical disease. Prior to arthritis onset, in the autoantibody response, epitope spreading, avidity maturation, and changes towards a pro-inflammatory Fc glycosylation phenotype occurs. Genetic association of epitope specific autoantibody responses and the induction of inflammation dependent and independent changes in the cartilage by pathogenic autoantibodies emphasize the crucial contribution of antibody-initiated inflammation in RA development. Targeting IgG by glyco-engineering, bacterial enzymes to specifically cleave IgG/alter N-linked Fc-glycans at Asn 297 or blocking the downstream effector pathways offers new avenues to develop novel therapeutics for arthritis treatment.
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Affiliation(s)
- Kutty Selva Nandakumar
- School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510000, China.
- Department of Medical Biochemistry and Biophysics, Karolinska Institute, 17177 Stockholm, Sweden.
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18
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T cells specific for post-translational modifications escape intrathymic tolerance induction. Nat Commun 2018; 9:353. [PMID: 29367624 PMCID: PMC5783942 DOI: 10.1038/s41467-017-02763-y] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Accepted: 12/21/2017] [Indexed: 12/18/2022] Open
Abstract
Establishing effective central tolerance requires the promiscuous expression of tissue-restricted antigens by medullary thymic epithelial cells. However, whether central tolerance also extends to post-translationally modified proteins is not clear. Here we show a mouse model of autoimmunity in which disease development is dependent on post-translational modification (PTM) of the tissue-restricted self-antigen collagen type II. T cells specific for the non-modified antigen undergo efficient central tolerance. By contrast, PTM-reactive T cells escape thymic selection, though the PTM variant constitutes the dominant form in the periphery. This finding implies that the PTM protein is absent in the thymus, or present at concentrations insufficient to induce negative selection of developing thymocytes and explains the lower level of tolerance induction against the PTM antigen. As the majority of self-antigens are post-translationally modified, these data raise the possibility that T cells specific for other self-antigens naturally subjected to PTM may escape central tolerance induction by a similar mechanism. Post-translational modifications are associated with autoimmune diseases but definitive evidence of their contribution to escape from central tolerance mechanisms is needed. Here, the authors show that T cells specific for post-translational modifications of type II collagen escape intrathymic tolerance induction in a mouse model of rheumatoid arthritis.
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19
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Yau ACY, Lönnblom E, Zhong J, Holmdahl R. Influence of hydrocarbon oil structure on adjuvanticity and autoimmunity. Sci Rep 2017; 7:14998. [PMID: 29118363 PMCID: PMC5678145 DOI: 10.1038/s41598-017-15096-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Accepted: 10/18/2017] [Indexed: 02/07/2023] Open
Abstract
Mineral oils are extensively used in our daily life, in food, cosmetics, biomedicine, vaccines and in different industrial applications. However, exposure to these mineral oils has been associated with immune adjuvant effects and the development of autoimmune diseases. Here we investigate the structural impacts of the hydrocarbon oil molecules on their adjuvanticity and autoimmunity. First, we showed that hydrocarbon oil molecules with small atomic differences could result in experimental arthritis in DA rats differing in disease severity, incidence, weight change and serum levels of acute phase proteins. Injection of these hydrocarbon oils resulted in the activation, proliferation and elevated expression of Th1 and especially Th17 cytokines by the T cells, which correlate with the arthritogenicity of the T cells. Furthermore, the more arthritogenic hydrocarbon oils resulted in an increased production of autoantibodies against cartilage joint specific, triple-helical type II collagen epitopes. When injected together with ovalbumin, the more arthritogenic hydrocarbon oils resulted in an increased production of αβ T cell-dependent anti-ovalbumin antibodies. This study shows the arthritogenicity of hydrocarbon oils is associated with their adjuvant properties with implications to not only arthritis research but also other diseases and medical applications such as vaccines in which oil adjuvants are involved.
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Affiliation(s)
- Anthony C Y Yau
- Division of Medical Inflammation Research, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-171 77, Stockholm, Sweden.,Department of Immunology, Genetics and Pathology, Uppsala University, SE-751 85, Uppsala, Sweden
| | - Erik Lönnblom
- Division of Medical Inflammation Research, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-171 77, Stockholm, Sweden
| | - Jianghong Zhong
- Division of Medical Inflammation Research, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-171 77, Stockholm, Sweden
| | - Rikard Holmdahl
- Division of Medical Inflammation Research, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-171 77, Stockholm, Sweden.
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20
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Clark AG, Worni-Schudel IM, Korte FM, Foster MH. A murine Ig light chain transgene reveals IGKV3 gene contributions to anti-collagen types IV and II specificities. Mol Immunol 2017; 91:49-56. [PMID: 28886586 DOI: 10.1016/j.molimm.2017.08.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Revised: 07/30/2017] [Accepted: 08/16/2017] [Indexed: 01/06/2023]
Abstract
A subset of autoimmune diseases result from autoantibodies targeting epitopes on matrix collagen. The most extensively studied are anti-glomerular basement membrane glomerulonephritis (or its systemic counterpart Goodpasture's disease) that destroys kidneys and lungs, and rheumatoid arthritis that leads to disabling arthritis. Autoantibodies in these disorders bind evolutionarily conserved conformational epitopes on the noncollagenous domain 1 (NC1) of the alpha3 chain of type IV [alpha3(IV)NC1] collagen in glomerular and alveolar basement membranes, and on native or citrullinated type II collagen (CII) in joint cartilage, respectively. The genetic origins of pathogenic anti-collagen B cells in these diseases is unknown, but observations from murine models raise the possibility that they overlap despite distinct in vivo immunopathologies. Monoclonal autoantibodies isolated from mice immunized with alpha3(IV)NC1 collagen or CII show a biased use of Ig light chains (LC) encoded by genes of the IGKV3 subgroup (previously Vk21 family), paired with diverse Ig heavy chains. To further explore this relationship and determine if a single murine IGKV3 LC independently predisposes to both anti-collagen responses, we generated a novel transgenic (Tg) C57BL/6 mouse that expresses a productively rearranged IGKV3-encoded LC, termed mLCV3-Tg, in conjunction with endogenously rearranged Ig heavy chains. Tg mice are also genetically deficient in endogenous kappa chains to permit tracking of the mLCV3 transgene. We show that mLCV3-Tg mice are susceptible to humoral autoimmunity against both collagen chains. Anti-alpha3(IV)NC1 collagen, but not anti-CII, mLCV3-encoded Ig are detected in serum of unmanipulated Tg mice, while Toll-like receptor ligands induce secretion of mLCV3-Tg autoantibodies of both collagen specificities from splenocytes ex vivo. This indicates developmental survival of mLCV3-Tg B cells reactive with each antigen, and is consistent with production of the two anti-collagen autoIg from distinct B cell populations. Reduced B cell numbers, low serum Ig kappa levels, low cell surface Ig kappa density, and abundant endogenous lambda chain expression suggest that subsets of IGKV3-encoded B cells are regulated in vivo by mechanisms that include deletion, anergy, and LC editing. These results support the notion that murine IGKV3 LCs contribute structural fitness to antigen binding sites that support diverse anti-collagen autoimmune responses, that these responses are regulated in vivo, and that these cells can nonetheless readily escape immune regulation.
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Affiliation(s)
- Amy G Clark
- Department of Medicine, Duke University Health System, Durham, NC, USA; Durham VA Medical Center, Durham, NC, USA.
| | - Inge M Worni-Schudel
- Department of Medicine, Duke University Health System, Durham, NC, USA; Durham VA Medical Center, Durham, NC, USA.
| | - Francesca M Korte
- Department of Medicine, Duke University Health System, Durham, NC, USA.
| | - Mary H Foster
- Department of Medicine, Duke University Health System, Durham, NC, USA; Durham VA Medical Center, Durham, NC, USA.
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21
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Ge C, Tong D, Liang B, Lönnblom E, Schneider N, Hagert C, Viljanen J, Ayoglu B, Stawikowska R, Nilsson P, Fields GB, Skogh T, Kastbom A, Kihlberg J, Burkhardt H, Dobritzsch D, Holmdahl R. Anti-citrullinated protein antibodies cause arthritis by cross-reactivity to joint cartilage. JCI Insight 2017; 2:93688. [PMID: 28679953 DOI: 10.1172/jci.insight.93688] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Accepted: 05/23/2017] [Indexed: 12/29/2022] Open
Abstract
Today, it is known that autoimmune diseases start a long time before clinical symptoms appear. Anti-citrullinated protein antibodies (ACPAs) appear many years before the clinical onset of rheumatoid arthritis (RA). However, it is still unclear if and how ACPAs are arthritogenic. To better understand the molecular basis of pathogenicity of ACPAs, we investigated autoantibodies reactive against the C1 epitope of collagen type II (CII) and its citrullinated variants. We found that these antibodies are commonly occurring in RA. A mAb (ACC1) against citrullinated C1 was found to cross-react with several noncitrullinated epitopes on native CII, causing proteoglycan depletion of cartilage and severe arthritis in mice. Structural studies by X-ray crystallography showed that such recognition is governed by a shared structural motif "RG-TG" within all the epitopes, including electrostatic potential-controlled citrulline specificity. Overall, we have demonstrated a molecular mechanism that explains how ACPAs trigger arthritis.
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Affiliation(s)
- Changrong Ge
- Section for Medical Inflammation Research, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
| | - Dongmei Tong
- Section for Medical Inflammation Research, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden.,Department of Pathophysiology, Key Lab for Shock and Microcirculation Research of Guangdong, Southern Medical University, Guangzhou, China
| | - Bibo Liang
- Section for Medical Inflammation Research, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden.,Department of Pathophysiology, Key Lab for Shock and Microcirculation Research of Guangdong, Southern Medical University, Guangzhou, China
| | - Erik Lönnblom
- Section for Medical Inflammation Research, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
| | - Nadine Schneider
- Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Project Group Translational Medicine & Pharmacology, and Division of Rheumatology, University Hospital Frankfurt Goethe University, Frankfurt, Germany
| | - Cecilia Hagert
- Medicity Research Laboratory, University of Turku, Turku, Finland; National Doctoral Programme in Informational and Structural Biology, Turku, Finland
| | - Johan Viljanen
- Section of Organic Chemistry, Department of Chemistry - Biomedicinskt centrum, Uppsala University, Uppsala, Sweden
| | - Burcu Ayoglu
- Affinity Proteomics, Science for Life Laboratory, School of Biotechnology, KTH Royal Institute of Technology, Stockholm, Sweden
| | - Roma Stawikowska
- Department of Chemistry & Biochemistry, Florida Atlantic University, Jupiter, Florida, USA
| | - Peter Nilsson
- Affinity Proteomics, Science for Life Laboratory, School of Biotechnology, KTH Royal Institute of Technology, Stockholm, Sweden
| | - Gregg B Fields
- Department of Chemistry & Biochemistry, Florida Atlantic University, Jupiter, Florida, USA
| | - Thomas Skogh
- Department of Rheumatology, Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
| | - Alf Kastbom
- Department of Rheumatology, Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
| | - Jan Kihlberg
- Section of Organic Chemistry, Department of Chemistry - Biomedicinskt centrum, Uppsala University, Uppsala, Sweden
| | - Harald Burkhardt
- Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Project Group Translational Medicine & Pharmacology, and Division of Rheumatology, University Hospital Frankfurt Goethe University, Frankfurt, Germany
| | - Doreen Dobritzsch
- Section of Biochemistry, Department of Chemistry - Biomedicinskt centrum, Uppsala University, Uppsala, Sweden
| | - Rikard Holmdahl
- Section for Medical Inflammation Research, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden.,Medicity Research Laboratory, University of Turku, Turku, Finland; National Doctoral Programme in Informational and Structural Biology, Turku, Finland.,Center for Medical Immunopharmacology Research, Southern Medical University, Guangzhou, China
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22
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Drent E, Themeli M, Poels R, de Jong-Korlaar R, Yuan H, de Bruijn J, Martens ACM, Zweegman S, van de Donk NWCJ, Groen RWJ, Lokhorst HM, Mutis T. A Rational Strategy for Reducing On-Target Off-Tumor Effects of CD38-Chimeric Antigen Receptors by Affinity Optimization. Mol Ther 2017; 25:1946-1958. [PMID: 28506593 DOI: 10.1016/j.ymthe.2017.04.024] [Citation(s) in RCA: 169] [Impact Index Per Article: 24.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Revised: 04/21/2017] [Accepted: 04/24/2017] [Indexed: 12/25/2022] Open
Abstract
Chimeric antigen receptors (CARs) can effectively redirect cytotoxic T cells toward highly expressed surface antigens on tumor cells. The low expression of several tumor-associated antigens (TAAs) on normal tissues, however, hinders their safe targeting by CAR T cells due to on-target/off-tumor effects. Using the multiple myeloma (MM)-associated CD38 antigen as a model system, here, we present a rational approach for effective and tumor-selective targeting of such TAAs. Using "light-chain exchange" technology, we combined the heavy chains of two high-affinity CD38 antibodies with 176 germline light chains and generated ∼124 new antibodies with 10- to >1,000-fold lower affinities to CD38. After categorizing them into three distinct affinity classes, we incorporated the single-chain variable fragments of eight antibodies from each class into new CARs. T cells carrying these CD38-CARs were extensively evaluated for their on-tumor/off-tumor cytotoxicity as well as CD38-dependent proliferation and cytokine production. We identified CD38-CAR T cells of ∼1,000- fold reduced affinity, which optimally proliferated, produced Th1-like cytokines, and effectively lysed CD382+ MM cells, but spared CD38+ healthy hematopoietic cells in vitro and in vivo. Thus, this systematic approach is highly suitable for the generation of optimal CARs for effective and selective targeting of TAAs.
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Affiliation(s)
- Esther Drent
- Department of Hematology, VU University Medical Center, De Boelelaan 1117, 1081HV Amsterdam, the Netherlands
| | - Maria Themeli
- Department of Hematology, VU University Medical Center, De Boelelaan 1117, 1081HV Amsterdam, the Netherlands
| | - Renée Poels
- Department of Hematology, VU University Medical Center, De Boelelaan 1117, 1081HV Amsterdam, the Netherlands
| | - Regina de Jong-Korlaar
- Department of Hematology, VU University Medical Center, De Boelelaan 1117, 1081HV Amsterdam, the Netherlands
| | - Huipin Yuan
- Xpand Biotechnology BV, Professor Bronkhorstlaan 10-D, 3723MB Bilthoven, the Netherlands
| | - Joost de Bruijn
- Xpand Biotechnology BV, Professor Bronkhorstlaan 10-D, 3723MB Bilthoven, the Netherlands; The School of Engineering and Materials Science, Queen Mary University of London, Mile End Rd., London E1 4NS, UK
| | - Anton C M Martens
- Department of Hematology, VU University Medical Center, De Boelelaan 1117, 1081HV Amsterdam, the Netherlands
| | - Sonja Zweegman
- Department of Hematology, VU University Medical Center, De Boelelaan 1117, 1081HV Amsterdam, the Netherlands
| | - Niels W C J van de Donk
- Department of Hematology, VU University Medical Center, De Boelelaan 1117, 1081HV Amsterdam, the Netherlands
| | - Richard W J Groen
- Department of Hematology, VU University Medical Center, De Boelelaan 1117, 1081HV Amsterdam, the Netherlands
| | - Henk M Lokhorst
- Department of Hematology, VU University Medical Center, De Boelelaan 1117, 1081HV Amsterdam, the Netherlands
| | - Tuna Mutis
- Department of Hematology, VU University Medical Center, De Boelelaan 1117, 1081HV Amsterdam, the Netherlands.
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Jones ML, Legge FS, Lebani K, Mahler SM, Young PR, Watterson D, Treutlein HR, Zeng J. Computational Identification of Antibody Epitopes on the Dengue Virus NS1 Protein. Molecules 2017; 22:E607. [PMID: 28394300 PMCID: PMC6154621 DOI: 10.3390/molecules22040607] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2016] [Revised: 04/05/2017] [Accepted: 04/06/2017] [Indexed: 12/04/2022] Open
Abstract
We have previously described a method to predict antigenic epitopes on proteins recognized by specific antibodies. Here we have applied this method to identify epitopes on the NS1 proteins of the four Dengue virus serotypes (DENV1-4) that are bound by a small panel of monoclonal antibodies 1H7.4, 1G5.3 and Gus2. Several epitope regions were predicted for these antibodies and these were found to reflect the experimentally observed reactivities. The known binding epitopes on DENV2 for the antibodies 1H7.4 and 1G5.3 were identified, revealing the reasons for the serotype specificity of 1H7.4 and 1G5.3, and the non-selectivity of Gus2. As DENV NS1 is critical for virus replication and a key vaccine candidate, epitope prediction will be valuable in designing appropriate vaccine control strategies. The ability to predict potential epitopes by computational methods significantly reduces the amount of experimental work required to screen peptide libraries for epitope mapping.
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Affiliation(s)
- Martina L Jones
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St. Lucia, QLD 4072, Australia.
- ARC Training Centre for Biopharmaceutical Innovation, The University of Queensland, St. Lucia, QLD 4072, Australia.
| | - Fiona S Legge
- Computist Bio-Nanotech, 1 Dalmore Drive, Scoresby, VIC 3179, Australia.
| | - Kebaneilwe Lebani
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St. Lucia, QLD 4072, Australia.
| | - Stephen M Mahler
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St. Lucia, QLD 4072, Australia.
- ARC Training Centre for Biopharmaceutical Innovation, The University of Queensland, St. Lucia, QLD 4072, Australia.
| | - Paul R Young
- ARC Training Centre for Biopharmaceutical Innovation, The University of Queensland, St. Lucia, QLD 4072, Australia.
- School of Chemistry and Molecular Biosciences, The University of Queensland, St. Lucia, QLD 4072, Australia.
- Australian Infectious Diseases Research Centre, The University of Queensland, St. Lucia, QLD 4072, Australia.
| | - Daniel Watterson
- School of Chemistry and Molecular Biosciences, The University of Queensland, St. Lucia, QLD 4072, Australia.
- Australian Infectious Diseases Research Centre, The University of Queensland, St. Lucia, QLD 4072, Australia.
| | - Herbert R Treutlein
- Computist Bio-Nanotech, 1 Dalmore Drive, Scoresby, VIC 3179, Australia.
- School of Medical Sciences, RMIT University, P.O. Box 71, Bundoora, VIC 3083, Australia.
| | - Jun Zeng
- Computist Bio-Nanotech, 1 Dalmore Drive, Scoresby, VIC 3179, Australia.
- School of Medical Sciences, RMIT University, P.O. Box 71, Bundoora, VIC 3083, Australia.
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24
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Collagen structure: new tricks from a very old dog. Biochem J 2016; 473:1001-25. [PMID: 27060106 DOI: 10.1042/bj20151169] [Citation(s) in RCA: 154] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Accepted: 02/01/2016] [Indexed: 12/22/2022]
Abstract
The main features of the triple helical structure of collagen were deduced in the mid-1950s from fibre X-ray diffraction of tendons. Yet, the resulting models only could offer an average description of the molecular conformation. A critical advance came about 20 years later with the chemical synthesis of sufficiently long and homogeneous peptides with collagen-like sequences. The availability of these collagen model peptides resulted in a large number of biochemical, crystallographic and NMR studies that have revolutionized our understanding of collagen structure. High-resolution crystal structures from collagen model peptides have provided a wealth of data on collagen conformational variability, interaction with water, collagen stability or the effects of interruptions. Furthermore, a large increase in the number of structures of collagen model peptides in complex with domains from receptors or collagen-binding proteins has shed light on the mechanisms of collagen recognition. In recent years, collagen biochemistry has escaped the boundaries of natural collagen sequences. Detailed knowledge of collagen structure has opened the field for protein engineers who have used chemical biology approaches to produce hyperstable collagens with unnatural residues, rationally designed collagen heterotrimers, self-assembling collagen peptides, etc. This review summarizes our current understanding of the structure of the collagen triple helical domain (COL×3) and gives an overview of some of the new developments in collagen molecular engineering aiming to produce novel collagen-based materials with superior properties.
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25
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Andersson SEM, Eneljung T, Tengvall S, Jirholt P, Stern A, Henningsson L, Liang B, Thorarinsdottir K, Kihlberg J, Holmdahl R, Mårtensson IL, Gustafsson K, Gjertsson I. Collagen epitope expression on B cells is sufficient to confer tolerance to collagen-induced arthritis. Arthritis Res Ther 2016; 18:140. [PMID: 27301320 PMCID: PMC4908726 DOI: 10.1186/s13075-016-1037-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Accepted: 05/27/2016] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The mechanisms underlying tolerance induction and maintenance in autoimmune arthritis remain elusive. In a mouse model of rheumatoid arthritis, collagen type II (CII)-induced arthritis, we explore the contribution of B cells to antigen-specific tolerance. METHODS To generate expression of the CII-peptide specifically on B-cell major histocompatibility complex type II, lentiviral-based gene therapy including a B-cell-specific Igk promoter was used. RESULTS Presentation of the CII-peptide on B cells significantly reduced the frequency and severity of arthritis as well as the serum levels of CII -specific IgG antibodies. Further, both frequency and suppressive function of regulatory T cells were increased in tolerized mice. Adoptive transfer of regulatory T cells from tolerized mice to naïve mice ameliorated the development of CII-induced arthritis. CONCLUSION Our data suggest that endogenous presentation of the CII-peptide on B cells is one of the key contributors to arthritis tolerance induction and maintenance.
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Affiliation(s)
- Sofia E M Andersson
- Department of Rheumatology and Inflammation Research, Institute for Medicine, Sahlgrenska Academy, University of Gothenburg, Box 480, SE 405 30, Gothenburg, Sweden
| | - Tove Eneljung
- Department of Rheumatology and Inflammation Research, Institute for Medicine, Sahlgrenska Academy, University of Gothenburg, Box 480, SE 405 30, Gothenburg, Sweden
- Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Sara Tengvall
- Department of Rheumatology and Inflammation Research, Institute for Medicine, Sahlgrenska Academy, University of Gothenburg, Box 480, SE 405 30, Gothenburg, Sweden
- Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Pernilla Jirholt
- Department of Rheumatology and Inflammation Research, Institute for Medicine, Sahlgrenska Academy, University of Gothenburg, Box 480, SE 405 30, Gothenburg, Sweden
| | - Anna Stern
- Department of Rheumatology and Inflammation Research, Institute for Medicine, Sahlgrenska Academy, University of Gothenburg, Box 480, SE 405 30, Gothenburg, Sweden
| | - Louise Henningsson
- Department of Rheumatology and Inflammation Research, Institute for Medicine, Sahlgrenska Academy, University of Gothenburg, Box 480, SE 405 30, Gothenburg, Sweden
| | - Bibo Liang
- Medical Inflammation Research, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Solna, Sweden
- Southern Medical University, Guangzhou, People's Republic China
| | - Katrin Thorarinsdottir
- Department of Rheumatology and Inflammation Research, Institute for Medicine, Sahlgrenska Academy, University of Gothenburg, Box 480, SE 405 30, Gothenburg, Sweden
- Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Jan Kihlberg
- Department of Chemistry, BMC, Uppsala University, Uppsala, Sweden
| | - Rikard Holmdahl
- Medical Inflammation Research, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Solna, Sweden
- Southern Medical University, Guangzhou, People's Republic China
| | - Inga-Lill Mårtensson
- Department of Rheumatology and Inflammation Research, Institute for Medicine, Sahlgrenska Academy, University of Gothenburg, Box 480, SE 405 30, Gothenburg, Sweden
| | - Kenth Gustafsson
- Molecular Immunology Unit, UCL Institute of Child Health, London, UK
| | - Inger Gjertsson
- Department of Rheumatology and Inflammation Research, Institute for Medicine, Sahlgrenska Academy, University of Gothenburg, Box 480, SE 405 30, Gothenburg, Sweden.
- Sahlgrenska University Hospital, Gothenburg, Sweden.
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26
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Huang ZQ, Raska M, Stewart TJ, Reily C, King RG, Crossman DK, Crowley MR, Hargett A, Zhang Z, Suzuki H, Hall S, Wyatt RJ, Julian BA, Renfrow MB, Gharavi AG, Novak J. Somatic Mutations Modulate Autoantibodies against Galactose-Deficient IgA1 in IgA Nephropathy. J Am Soc Nephrol 2016; 27:3278-3284. [PMID: 26966014 DOI: 10.1681/asn.2014101044] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2015] [Accepted: 02/04/2016] [Indexed: 12/22/2022] Open
Abstract
Autoantibodies against galactose-deficient IgA1 drive formation of pathogenic immune complexes in IgA nephropathy. IgG autoantibodies against galactose-deficient IgA1 in patients with IgA nephropathy have a specific amino-acid sequence, Y1CS3, in the complementarity-determining region 3 of the heavy chain variable region compared with a Y1CA3 sequence in similar isotype-matched IgG from healthy controls. We previously found that the S3 residue is critical for binding galactose-deficient IgA1. To determine whether this difference is due to a rare germline sequence, we amplified and sequenced the corresponding germline variable region genes from peripheral blood mononuclear cells of seven patients with IgA nephropathy and six healthy controls from whom we had cloned single-cell lines secreting monoclonal IgG specific for galactose-deficient IgA1. Sanger DNA sequencing revealed that complementarity-determining region 3 in the variable region of the germline genes encoded the Y1C(A/V)3 amino-acid sequence. Thus, the A/V>S substitution in the complementarity-determining region 3 of anti-galactose-deficient-IgA1 autoantibodies of the patients with IgA nephropathy is not a rare germline gene variant. Modeling analyses indicated that the S3 hydroxyl group spans the complementarity-determining region 3 loop stem, stabilizing the adjacent β-sheet and stem structure, important features for effective binding to galactose-deficient IgA1. Understanding processes leading to production of the autoantibodies may offer new approaches to treat IgA nephropathy.
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Affiliation(s)
| | - Milan Raska
- University of Alabama at Birmingham, Birmingham, Alabama.,Palacky University and University Hospital Olomouc, Olomouc, Czech Republic
| | | | - Colin Reily
- University of Alabama at Birmingham, Birmingham, Alabama
| | - R Glenn King
- University of Alabama at Birmingham, Birmingham, Alabama
| | | | | | - Audra Hargett
- University of Alabama at Birmingham, Birmingham, Alabama
| | - Zhixin Zhang
- University of Nebraska Medical Center, Omaha, Nebraska.,West China Second University Hospital, State Key Laboratory of Biotherapy, Sichuan University, Chengdu, China
| | - Hitoshi Suzuki
- University of Alabama at Birmingham, Birmingham, Alabama.,Juntendo University Faculty of Medicine, Tokyo, Japan
| | - Stacy Hall
- University of Alabama at Birmingham, Birmingham, Alabama
| | - Robert J Wyatt
- University of Tennessee Health Science Center, Memphis, Tennessee; and
| | - Bruce A Julian
- University of Alabama at Birmingham, Birmingham, Alabama
| | | | | | - Jan Novak
- University of Alabama at Birmingham, Birmingham, Alabama;
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27
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Lossius A, Johansen JN, Vartdal F, Holmøy T. High-throughput sequencing of immune repertoires in multiple sclerosis. Ann Clin Transl Neurol 2016; 3:295-306. [PMID: 27081660 PMCID: PMC4818741 DOI: 10.1002/acn3.295] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Revised: 12/21/2015] [Accepted: 01/18/2016] [Indexed: 12/24/2022] Open
Abstract
T cells and B cells are crucial in the initiation and maintenance of multiple sclerosis (MS), and the activation of these cells is believed to be mediated through specific recognition of antigens by the T‐ and B‐cell receptors. The antigen receptors are highly polymorphic due to recombination (T‐ and B‐cell receptors) and mutation (B‐cell receptors) of the encoding genes, which can therefore be used as fingerprints to track individual T‐ and B‐cell clones. Such studies can shed light on mechanisms driving the immune responses and provide new insights into the pathogenesis. Here, we summarize studies that have explored the T‐ and B‐cell receptor repertoires using earlier methodological approaches, and we focus on how high‐throughput sequencing has provided new knowledge by surveying the immune repertoires in MS in even greater detail and with unprecedented depth.
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Affiliation(s)
- Andreas Lossius
- Department of Immunology and Transfusion Medicine Oslo University Hospital Rikshospitalet Oslo Norway; Department of Neurology Oslo University Hospital Rikshospitalet Oslo Norway; Institute of Clinical Medicine University of Oslo Oslo Norway
| | - Jorunn N Johansen
- Department of Immunology and Transfusion Medicine Oslo University Hospital Rikshospitalet Oslo Norway
| | - Frode Vartdal
- Department of Immunology and Transfusion Medicine Oslo University Hospital Rikshospitalet Oslo Norway; Institute of Clinical Medicine University of Oslo Oslo Norway
| | - Trygve Holmøy
- Institute of Clinical Medicine University of Oslo Oslo Norway; Department of Neurology Akershus University Hospital Lørenskog Norway
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28
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Chen X, Hnida K, Graewert MA, Andersen JT, Iversen R, Tuukkanen A, Svergun D, Sollid LM. Structural Basis for Antigen Recognition by Transglutaminase 2-specific Autoantibodies in Celiac Disease. J Biol Chem 2015; 290:21365-75. [PMID: 26160175 PMCID: PMC4571865 DOI: 10.1074/jbc.m115.669895] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2015] [Indexed: 12/20/2022] Open
Abstract
Antibodies to the autoantigen transglutaminase 2 (TG2) are a hallmark of celiac disease. We have studied the interaction between TG2 and an anti-TG2 antibody (679-14-E06) derived from a single gut IgA plasma cell of a celiac disease patient. The antibody recognizes one of four identified epitopes targeted by antibodies of plasma cells of the disease lesion. The binding interface was identified by small angle x-ray scattering, ab initio and rigid body modeling using the known crystal structure of TG2 and the crystal structure of the antibody Fab fragment, which was solved at 2.4 Å resolution. The result was confirmed by testing binding of the antibody to TG2 mutants by ELISA and surface plasmon resonance. TG2 residues Arg-116 and His-134 were identified to be critical for binding of 679-14-E06 as well as other epitope 1 antibodies. In contrast, antibodies directed toward the two other main epitopes (epitopes 2 and 3) were not affected by these mutations. Molecular dynamics simulations suggest interactions of 679-14-E06 with the N-terminal domain of TG2 via the CDR2 and CDR3 loops of the heavy chain and the CDR2 loop of the light chain. In addition there were contacts of the framework 3 region of the heavy chain with the catalytic domain of TG2. The results provide an explanation for the biased usage of certain heavy and light chain gene segments by epitope 1-specific antibodies in celiac disease.
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Affiliation(s)
- Xi Chen
- From the Centre for Immune Regulation and Department of Immunology, University of Oslo and Oslo University Hospital, N-0372 Oslo, Norway and
| | - Kathrin Hnida
- From the Centre for Immune Regulation and Department of Immunology, University of Oslo and Oslo University Hospital, N-0372 Oslo, Norway and
| | - Melissa Ann Graewert
- European Molecular Biology Laboratory, Hamburg Outstation, D-22607 Hamburg, Germany
| | - Jan Terje Andersen
- From the Centre for Immune Regulation and Department of Immunology, University of Oslo and Oslo University Hospital, N-0372 Oslo, Norway and
| | - Rasmus Iversen
- From the Centre for Immune Regulation and Department of Immunology, University of Oslo and Oslo University Hospital, N-0372 Oslo, Norway and
| | - Anne Tuukkanen
- European Molecular Biology Laboratory, Hamburg Outstation, D-22607 Hamburg, Germany
| | - Dmitri Svergun
- European Molecular Biology Laboratory, Hamburg Outstation, D-22607 Hamburg, Germany
| | - Ludvig M Sollid
- From the Centre for Immune Regulation and Department of Immunology, University of Oslo and Oslo University Hospital, N-0372 Oslo, Norway and
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29
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Khmaladze I, Saxena A, Nandakumar KS, Holmdahl R. B-cell epitope spreading and inflammation in a mouse model of arthritis is associated with a deficiency in reactive oxygen species production. Eur J Immunol 2015; 45:2243-51. [DOI: 10.1002/eji.201545518] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Revised: 03/28/2015] [Accepted: 05/15/2015] [Indexed: 12/18/2022]
Affiliation(s)
- Ia Khmaladze
- Medical Inflammation Research; Department of Medical Biochemistry and Biophysics; Karolinska Institutet; Stockholm Sweden
- Unit of Dermatology, Department of Medicine; Karolinska Institutet; Stockholm Sweden
| | - Amit Saxena
- Medical Inflammation Research; Department of Medical Biochemistry and Biophysics; Karolinska Institutet; Stockholm Sweden
| | - Kutty Selva Nandakumar
- Medical Inflammation Research; Department of Medical Biochemistry and Biophysics; Karolinska Institutet; Stockholm Sweden
| | - Rikard Holmdahl
- Medical Inflammation Research; Department of Medical Biochemistry and Biophysics; Karolinska Institutet; Stockholm Sweden
- Unit of Medical Inflammation Research; Southern Medical University; Guangzhou China
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30
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Gonzalez-Garay ML, Cranford SM, Braun MC, Doris PA. Diversity in the preimmune immunoglobulin repertoire of SHR lines susceptible and resistant to end-organ injury. Genes Immun 2014; 15:528-33. [PMID: 25056448 PMCID: PMC4257902 DOI: 10.1038/gene.2014.40] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2014] [Revised: 04/24/2014] [Accepted: 05/23/2014] [Indexed: 01/03/2023]
Abstract
We used next-generation sequencing to identify IGH genetic variation in two closely related hypertensive rat lines that differ in susceptibility to end-organ disease (SHR-A3 and SHR-B2). The two SHR lines differ extensively at the IGH locus from the rat reference genome sequence (RRGS) and from each other, creating 306 sequence unique IGH genes. Compared to IGH genes mapped in the RRGS, 98 are null gene alleles (31 are null in both SHR lines, 45 are null in SHR-A3 only, and 23 are null in SHR-B2 only). Of the 306 divergent gene sequences, 126 result in amino acid substitution and, among these, SHR-A3 and SHR-B2 differ from one another at the amino acid level in 96 segments. Twelve pseudogenes in the RRGS had changes displacing the stop codon and creating probable functional genes in either or both SHR-A3 and SHR-B2. A further 5 alleles that encoded functional RRGS genes or open reading frames were converted to pseudogenes in either or both SHR-A3 and SHR-B2. These studies reveal that the pre-immune immunoglobulin repertoire is highly divergent among SHR lines differing in end organ injury susceptibility and this may modify immune mechanisms in hypertensive renal injury.
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Affiliation(s)
- M L Gonzalez-Garay
- Institute of Molecular Medicine, University of Texas Health Science Center at Houston, Houston, TX, USA
| | - S M Cranford
- Institute of Molecular Medicine, University of Texas Health Science Center at Houston, Houston, TX, USA
| | - M C Braun
- Institute of Molecular Medicine, University of Texas Health Science Center at Houston, Houston, TX, USA
| | - P A Doris
- Institute of Molecular Medicine, University of Texas Health Science Center at Houston, Houston, TX, USA
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31
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Lindh I, Snir O, Lönnblom E, Uysal H, Andersson I, Nandakumar KS, Vierboom M, 't Hart B, Malmström V, Holmdahl R. Type II collagen antibody response is enriched in the synovial fluid of rheumatoid joints and directed to the same major epitopes as in collagen induced arthritis in primates and mice. Arthritis Res Ther 2014; 16:R143. [PMID: 25005029 PMCID: PMC4226996 DOI: 10.1186/ar4605] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2014] [Accepted: 06/11/2014] [Indexed: 01/17/2023] Open
Abstract
Introduction Antibodies towards type II collagen (CII) are detected in patients with rheumatoid arthritis (RA) and in non-human primates and rodents with collagen induced arthritis (CIA). We have previously shown that antibodies specific for several CII-epitopes are pathogenic using monoclonal antibodies from arthritic mice, although the role of different anti-CII epitopes has not been investigated in detail in other species. We therefore performed an inter-species comparative study of the autoantibody response to CII in patients with RA versus monkeys and mice with CIA. Methods Analysis of the full epitope repertoire along the disease course of CIA was performed using a library of CII triple-helical peptides. The antibody responses to the major CII epitopes were analyzed in sera and synovial fluid from RA patients, and in sera from rhesus monkeys (Macaca mulatta), common marmosets (Callithrix jacchus) and mice. Results Many CII epitopes including the major C1, U1, and J1 were associated with established CIA and arginine residues played an important role in the anti-CII antibody interactions. The major epitopes were also recognized in RA patients, both in sera and even more pronounced in synovial fluid: 77% of the patients had antibodies to the U1 epitope. The anti-CII immune response was not restricted to the anti-citrulline protein antibodies (ACPA) positive RA group. Conclusion CII conformational dependent antibody responses are common in RA and are likely to originate from rheumatoid joints but did not show a correlation with ACPA response. Importantly, the fine specificity of the anti-CII response is similar with CIA in monkeys and rodents where the recognized epitopes are conserved and have a major pathogenic role. Thus, anti-CII antibodies may both contribute to, as well as be the consequence of, local joint inflammation.
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32
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Holmdahl R, Malmström V, Burkhardt H. Autoimmune priming, tissue attack and chronic inflammation - the three stages of rheumatoid arthritis. Eur J Immunol 2014; 44:1593-9. [PMID: 24737176 DOI: 10.1002/eji.201444486] [Citation(s) in RCA: 86] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2014] [Revised: 02/27/2014] [Accepted: 04/10/2014] [Indexed: 12/28/2022]
Abstract
Extensive genome-wide association studies have recently shed some light on the causes of chronic autoimmune diseases and have confirmed a central role of the adaptive immune system. Moreover, better diagnostics using disease-associated autoantibodies have been developed, and treatment has improved through the development of biologicals with precise molecular targets. Here, we use rheumatoid arthritis (RA) as a prototype for chronic autoimmune disease to propose that the pathogenesis of autoimmune diseases could be divided into three discrete stages. First, yet unknown environmental challenges seem to activate innate immunity thereby providing an adjuvant signal for the induction of adaptive immune responses that lead to the production of autoantibodies and determine the subsequent disease development. Second, a joint-specific inflammatory reaction occurs. This inflammatory reaction might be clinically diagnosed as the earliest signs of the disease. Third, inflammation is converted to a chronic process leading to tissue destruction and remodeling. In this review, we discuss the stages involved in RA pathogenesis and the experimental approaches, mainly involving animal models that can be used to investigate each disease stage. Although we focus on RA, it is possible that a similar stepwise development of disease also occurs in other chronic autoimmune settings such as multiple sclerosis (MS), type 1 diabetes, and systemic lupus erythematosus.
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Affiliation(s)
- Rikard Holmdahl
- Department of Medical Biochemistry and Biophysics, Medical Inflammation Research, Karolinska Institutet, Stockholm, Sweden
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