1
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Planchais C, Noe R, Gilbert M, Lecerf M, Kaveri SV, Lacroix-Desmazes S, Roumenina LT, Dimitrov JD. Oxidized hemoglobin triggers polyreactivity and autoreactivity of human IgG via transfer of heme. Commun Biol 2023; 6:168. [PMID: 36774392 PMCID: PMC9922299 DOI: 10.1038/s42003-023-04535-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Accepted: 01/26/2023] [Indexed: 02/13/2023] Open
Abstract
Intravascular hemolysis occurs in diverse pathological conditions. Extracellular hemoglobin and heme have strong pro-oxidative and pro-inflammatory potentials that can contribute to the pathology of hemolytic diseases. However, many of the effects of extracellular hemoglobin and heme in hemolytic diseases are still not well understood. Here we demonstrate that oxidized hemoglobin (methemoglobin) can modify the antigen-binding characteristics of human immunoglobulins. Thus, incubation of polyclonal or some monoclonal human IgG in the presence of methemoglobin results in an appearance of binding reactivities towards distinct unrelated self-proteins, including the protein constituent of hemoglobin i.e., globin. We demonstrate that a transfer of heme from methemoglobin to IgG is indispensable for this acquisition of antibody polyreactivity. Our data also show that only oxidized form of hemoglobin have the capacity to induce polyreactivity of antibodies. Site-directed mutagenesis of a heme-sensitive human monoclonal IgG1 reveals details about the mechanism of methemoglobin-induced antigen-binding polyreactivity. Further here we assess the kinetics and thermodynamics of interaction of a heme-induced polyreactive human antibody with hemoglobin and myoglobin. Taken together presented data contribute to a better understanding of the functions of extracellular hemoglobin in the context of hemolytic diseases.
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Affiliation(s)
- Cyril Planchais
- Laboratory of Humoral Immunology, Institut Pasteur, Université Paris Cité, INSERM U1222, 75015 Paris, France
| | - Remi Noe
- grid.4444.00000 0001 2112 9282Centre de Recherche des Cordeliers, INSERM, CNRS, Sorbonne Université, Université Paris Cité, 75006 Paris, France
| | - Marie Gilbert
- grid.4444.00000 0001 2112 9282Centre de Recherche des Cordeliers, INSERM, CNRS, Sorbonne Université, Université Paris Cité, 75006 Paris, France
| | - Maxime Lecerf
- grid.4444.00000 0001 2112 9282Centre de Recherche des Cordeliers, INSERM, CNRS, Sorbonne Université, Université Paris Cité, 75006 Paris, France
| | - Srini V. Kaveri
- grid.4444.00000 0001 2112 9282Centre de Recherche des Cordeliers, INSERM, CNRS, Sorbonne Université, Université Paris Cité, 75006 Paris, France
| | - Sébastien Lacroix-Desmazes
- grid.4444.00000 0001 2112 9282Centre de Recherche des Cordeliers, INSERM, CNRS, Sorbonne Université, Université Paris Cité, 75006 Paris, France
| | - Lubka T. Roumenina
- grid.4444.00000 0001 2112 9282Centre de Recherche des Cordeliers, INSERM, CNRS, Sorbonne Université, Université Paris Cité, 75006 Paris, France
| | - Jordan D. Dimitrov
- grid.4444.00000 0001 2112 9282Centre de Recherche des Cordeliers, INSERM, CNRS, Sorbonne Université, Université Paris Cité, 75006 Paris, France
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2
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Ousaka D, Nishibori M. Is hemolysis a novel therapeutic target in COVID-19? Front Immunol 2022; 13:956671. [PMID: 36059481 PMCID: PMC9438449 DOI: 10.3389/fimmu.2022.956671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Accepted: 07/26/2022] [Indexed: 12/15/2022] Open
Affiliation(s)
- Daiki Ousaka
- Department of Pharmacology, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama, Japan
| | - Masahiro Nishibori
- Translational Research and Drug Development, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama, Japan
- *Correspondence: Masahiro Nishibori,
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3
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Blackler RJ, Müller-Loennies S, Pokorny-Lehrer B, Legg MSG, Brade L, Brade H, Kosma P, Evans SV. Antigen binding by conformational selection in near-germline antibodies. J Biol Chem 2022; 298:101901. [PMID: 35395245 PMCID: PMC9112003 DOI: 10.1016/j.jbc.2022.101901] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 03/30/2022] [Accepted: 03/31/2022] [Indexed: 01/20/2023] Open
Abstract
Conformational flexibility in antibody-combining sites has been hypothesized to facilitate polyspecificity toward multiple unique epitopes and enable the limited germline repertoire to match an overwhelming diversity of potential antigens; however, elucidating the mechanisms of antigen recognition by flexible antibodies has been understandably challenging. Here, multiple liganded and unliganded crystal structures of the near-germline anticarbohydrate antibodies S25–2 and S25–39 are reported, which reveal an unprecedented diversity of complementarity-determining region H3 conformations in apparent equilibrium. These structures demonstrate that at least some germline or near-germline antibodies are flexible entities sensitive to their chemical environments, with conformational selection available as an evolved mechanism that preserves the inherited ability to recognize common pathogens while remaining adaptable to new threats.
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Affiliation(s)
- Ryan J Blackler
- Department of Biochemistry and Microbiology, University of Victoria, Victoria BC, Canada
| | | | - Barbara Pokorny-Lehrer
- Department of Chemistry, University of Natural Resources and Life Sciences, Vienna, Austria
| | - Max S G Legg
- Department of Biochemistry and Microbiology, University of Victoria, Victoria BC, Canada
| | - Lore Brade
- Research Center Borstel, Leibniz Lung Center, Borstel, Germany
| | - Helmut Brade
- Research Center Borstel, Leibniz Lung Center, Borstel, Germany
| | - Paul Kosma
- Department of Chemistry, University of Natural Resources and Life Sciences, Vienna, Austria
| | - Stephen V Evans
- Department of Biochemistry and Microbiology, University of Victoria, Victoria BC, Canada.
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4
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Rapozzi V, Juarranz A, Habib A, Ihan A, Strgar R. Is haem the real target of COVID-19? Photodiagnosis Photodyn Ther 2021; 35:102381. [PMID: 34119708 PMCID: PMC8192263 DOI: 10.1016/j.pdpdt.2021.102381] [Citation(s) in RCA: 5] [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: 03/16/2021] [Revised: 05/25/2021] [Accepted: 06/01/2021] [Indexed: 02/08/2023]
Abstract
Although a vaccination campaign has been launched in many countries, the COVID-19 pandemic is not under control. The main concern is the emergence of new variants of SARS-CoV-2; therefore, it is important to find approaches to prevent or reduce the virulence and pathogenicity of the virus. Currently, the mechanism of action of SARS-CoV-2 is not fully understood. Considering the clinical effects that occur during the disease, attacking the human respiratory and hematopoietic systems, and the changes in biochemical parameters (including decreases in haemoglobin [Hb] levels and increases in serum ferritin), it is clear that iron metabolism is involved. SARS-CoV-2 induces haemolysis and interacts with Hb molecules via ACE2, CD147, CD26, and other receptors located on erythrocytes and/or blood cell precursors that produce dysfunctional Hb. A molecular docking study has reported a potential link between the virus and the beta chain of haemoglobin and attack on haem. Considering that haem is involved in miRNA processing by binding to the DGCR8-DROSHA complex, we hypothesised that the virus may check this mechanism and thwart the antiviral response.
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Affiliation(s)
| | - Angeles Juarranz
- Department of Biology, University Autonoma of Madrid, Madrid 28049, Spain
| | - Ahsan Habib
- Department of Chemistry, University of Dhaka, Dhaka 1000, Bangladesh
| | - Alojz Ihan
- Institute for Microbiology and Immunology, Medical Faculty of Ljubljana, Slovenia
| | - Rebeka Strgar
- Institution of Applicative Biophotonics, Technological Park Ljubljana, Slovenia
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5
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Fumagalli MJ, Figueiredo LTM, Aquino VH. Linear and Continuous Flavivirus Epitopes From Naturally Infected Humans. Front Cell Infect Microbiol 2021; 11:710551. [PMID: 34458161 PMCID: PMC8387565 DOI: 10.3389/fcimb.2021.710551] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Accepted: 07/15/2021] [Indexed: 12/27/2022] Open
Abstract
This manuscript is an up-to-date review of experimentally validated linear and continuous epitopes identified from arbovirus members of the Flavivirus genus. We summarized 153 immunoreactive peptides from the Dengue virus, Zika virus, Japanese encephalitis virus, West Nile virus, and tick-borne encephalitis virus described in studies published from 1989 to 2020. We included peptides from structural (envelope, capsid, and pre-membrane) and nonstructural (Ns1–5) viral proteins that demonstrated relevant immunoreactivity with antibodies from naturally infected or vaccinated humans. We included peptides that demonstrated relevant reactivity features, such as indicators of disease severity related to immunological or immunopathological outcomes, differential or group diagnostic markers, immunotherapy candidates, and potential for vaccine formulation. The majority of immunoreactive peptides were described for DENV probably due to its long-lasting impact on human health and the lack of efficient vaccines and therapeutic methods. Immune landscape data regarding linear immunoreactive and continuous flavivirus peptides are still scarce, and a complete and more detailed map remains to be elucidated. Therefore, this review provides valuable data for those investigating the antibody response against flavivirus infection.
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Affiliation(s)
- Marcilio Jorge Fumagalli
- Virology Research Center, Medical School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | | | - Victor Hugo Aquino
- Laboratory of Virology, Department of Clinical Analyses, Toxicology and Food Sciences, Faculty of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
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6
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Mueller S. Rarely Recognized Antibody Diversification in Covid-19 Evolution to Counteract Advanced SARS-CoV-2 Evasion Strategies, and Implications for Prophylactic Treatment. Front Physiol 2021; 12:624675. [PMID: 34413782 PMCID: PMC8369989 DOI: 10.3389/fphys.2021.624675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Accepted: 07/06/2021] [Indexed: 11/13/2022] Open
Abstract
The ongoing Covid-19 pandemic underscores the importance of finding effective and safe ways to combat the virus, and to optimally understand the immune response elicited upon natural infection. This likely involves all components of the immune system, both innate and adaptive. The impetus for the rapid development of prophylactic treatment options has led to an intense focus on neutralizing antibodies (Abs), and many novel and specialized platforms have been designed to achieve that goal. B-cell immunity relies on the generation of a diverse repertoire of Abs. Their structural variation is defined in terms of amino acid composition that is encoded in the genome or acquired through somatic mutations. Yet, key examples of frequently neglected antibody diversification mechanisms involving post-translational modifications such as N- or O-linked glycosylation are present in significant portions of the population. During the last few years, these and other beyond gene sequence determined humoral immune response mechanisms have in some specific cases revealed their potent immunomodulatory effects. Nonetheless, such more unusual mechanisms have not received much attention in the context of SARS-CoV-2. Thus, with specific focus on the latter, this paper presents, (1) the rationale for considering beyond sequence determined strategies, (2) evidence for their possible involvement in Covid-19 disease evolution, (3) consequences for vaccine design exemplified by one of the vaccine candidates that is currently undergoing trial, and (4) more general implications. Based on a critical interpretation of published literature, the hypotheses developed in this study point to a crucial role of non-genetic antibody diversification mechanisms in disease evolution to counteract unique immunogenicity determinants of SARS-CoV-2 infection. The involvement of post translational mechanisms may also help explain the widely varied immune response observed, not only among different patient groups, but also in terms of their observed incompatibility with SARS-CoV-2 infection in several human cell types. The article highlights potentials and challenges of these refined humoral immune response mechanisms to most optimally target non-genetic viral evasion strategies.
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7
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Sharma KB, Vrati S, Kalia M. Pathobiology of Japanese encephalitis virus infection. Mol Aspects Med 2021; 81:100994. [PMID: 34274157 DOI: 10.1016/j.mam.2021.100994] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 07/13/2021] [Accepted: 07/13/2021] [Indexed: 12/25/2022]
Abstract
Japanese encephalitis virus (JEV) is a flavivirus, spread by the bite of carrier Culex mosquitoes. The subsequent disease caused is Japanese encephalitis (JE), which is the leading global cause of virus-induced encephalitis. The disease is predominant in the entire Asia-Pacific region with the potential of global spread. JEV is highly neuroinvasive with symptoms ranging from mild fever to severe encephalitis and death. One-third of JE infections are fatal, and half of the survivors develop permanent neurological sequelae. Disease prognosis is determined by a series of complex and intertwined signaling events dictated both by the virus and the host. All flaviviruses, including JEV replicate in close association with ER derived membranes by channelizing the protein and lipid components of the ER. This leads to activation of acute stress responses in the infected cell-oxidative stress, ER stress, and autophagy. The host innate immune and inflammatory responses also enter the fray, the components of which are inextricably linked to the cellular stress responses. These are especially crucial in the periphery for dendritic cell maturation and establishment of adaptive immunity. The pathogenesis of JEV is a combination of direct virus induced neuronal cell death and an uncontrolled neuroinflammatory response. Here we provide a comprehensive review of the JEV life cycle and how the cellular stress responses dictate the pathobiology and resulting immune response. We also deliberate on how modulation of these stress pathways could be a potential strategy to develop therapeutic interventions, and define the persisting challenges.
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Affiliation(s)
- Kiran Bala Sharma
- Virology Research Group, Regional Centre for Biotechnology, NCR Biotech Science Cluster, Faridabad, India
| | - Sudhanshu Vrati
- Virology Research Group, Regional Centre for Biotechnology, NCR Biotech Science Cluster, Faridabad, India.
| | - Manjula Kalia
- Virology Research Group, Regional Centre for Biotechnology, NCR Biotech Science Cluster, Faridabad, India.
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8
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Chauhan S, Rathore DK, Sachan S, Lacroix-Desmazes S, Gupta N, Awasthi A, Vrati S, Kalia M. Japanese Encephalitis Virus Infected Human Monocyte-Derived Dendritic Cells Activate a Transcriptional Network Leading to an Antiviral Inflammatory Response. Front Immunol 2021; 12:638694. [PMID: 34220803 PMCID: PMC8247639 DOI: 10.3389/fimmu.2021.638694] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Accepted: 05/04/2021] [Indexed: 12/29/2022] Open
Abstract
A comprehensive understanding of the human immune response to virus infection is imperative for developing effective therapies, antivirals, and vaccines. Dendritic cells (DCs) are among the first cells to encounter the virus and are also key antigen-presenting cells that link the innate and adaptive immune system. In this study, we focus on the human immune response to the mosquito-borne Japanese encephalitis virus (JEV), which is the leading cause of virus-induced encephalitis in south-east Asia and has the potential to become a global pathogen. We describe the gene regulatory circuit of JEV infection in human monocyte-derived DCs (moDCs) along with its functional validation. We observe that JEV can productively infect human moDCs leading to robust transcriptional activation of the interferon and NF-κB-mediated antiviral and inflammatory pathways. This is accompanied with DC maturation and release of pro-inflammatory cytokines and chemokines TNFα, IL-6, IL-8, IL-12, MCP-1. and RANTES. JEV-infected moDCs activated T-regulatory cells (Tregs) in allogenic mixed lymphocyte reactions (MLR) as seen by upregulated FOXP3 mRNA expression, suggestive of a host response to reduce virus-induced immunopathology. The virus also downregulated transcripts involved in Peroxisome Proliferator Activated Receptor (PPAR) signalling and fatty acid metabolism pathways suggesting that changes in cellular metabolism play a crucial role in driving the DC maturation and antiviral responses. Collectively, our data describe and corroborate the human DC transcriptional network that is engaged upon JEV sensing.
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Affiliation(s)
| | | | - Shilpa Sachan
- Vaccine Immunology Laboratory, National Institute of Immunology, New Delhi, India
| | - Sebastien Lacroix-Desmazes
- Institut National de la Santé et de la Recherche Médicale, Centre de Recherche des Cordeliers, Sorbonne Université, Université de Paris, Paris, France
| | - Nimesh Gupta
- Vaccine Immunology Laboratory, National Institute of Immunology, New Delhi, India
| | - Amit Awasthi
- Translational Health Science & Technology Institute, Faridabad, India
| | - Sudhanshu Vrati
- Translational Health Science & Technology Institute, Faridabad, India
- Regional Centre for Biotechnology, Faridabad, India
| | - Manjula Kalia
- Translational Health Science & Technology Institute, Faridabad, India
- Regional Centre for Biotechnology, Faridabad, India
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9
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Hopp MT, Domingo-Fernández D, Gadiya Y, Detzel MS, Graf R, Schmalohr BF, Kodamullil AT, Imhof D, Hofmann-Apitius M. Linking COVID-19 and Heme-Driven Pathophysiologies: A Combined Computational-Experimental Approach. Biomolecules 2021; 11:biom11050644. [PMID: 33925394 PMCID: PMC8147026 DOI: 10.3390/biom11050644] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 04/21/2021] [Accepted: 04/22/2021] [Indexed: 01/08/2023] Open
Abstract
The SARS-CoV-2 outbreak was declared a worldwide pandemic in 2020. Infection triggers the respiratory tract disease COVID-19, which is accompanied by serious changes in clinical biomarkers such as hemoglobin and interleukins. The same parameters are altered during hemolysis, which is characterized by an increase in labile heme. We present two computational–experimental approaches aimed at analyzing a potential link between heme-related and COVID-19 pathophysiologies. Herein, we performed a detailed analysis of the common pathways induced by heme and SARS-CoV-2 by superimposition of knowledge graphs covering heme biology and COVID-19 pathophysiology. Focus was laid on inflammatory pathways and distinct biomarkers as the linking elements. In a second approach, four COVID-19-related proteins, the host cell proteins ACE2 and TMPRSS2 as well as the viral proteins 7a and S protein were computationally analyzed as potential heme-binding proteins with an experimental validation. The results contribute to the understanding of the progression of COVID-19 infections in patients with different clinical backgrounds and may allow for a more individual diagnosis and therapy in the future.
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Affiliation(s)
- Marie-Thérèse Hopp
- Pharmaceutical Biochemistry and Bioanalytics, Pharmaceutical Institute, University of Bonn, An der Immenburg 4, D-53121 Bonn, Germany; (M.-T.H.); (M.S.D.); (R.G.); (B.F.S.)
| | - Daniel Domingo-Fernández
- Department of Bioinformatics, Fraunhofer Institute for Algorithms and Scientific Computing (SCAI), Schloss Birlinghoven, D-53757 Sankt Augustin, Germany; (D.D.-F.); (Y.G.); (A.T.K.)
- Enveda Biosciences, Inc., San Francisco, CA 94080, USA
| | - Yojana Gadiya
- Department of Bioinformatics, Fraunhofer Institute for Algorithms and Scientific Computing (SCAI), Schloss Birlinghoven, D-53757 Sankt Augustin, Germany; (D.D.-F.); (Y.G.); (A.T.K.)
| | - Milena S. Detzel
- Pharmaceutical Biochemistry and Bioanalytics, Pharmaceutical Institute, University of Bonn, An der Immenburg 4, D-53121 Bonn, Germany; (M.-T.H.); (M.S.D.); (R.G.); (B.F.S.)
| | - Regina Graf
- Pharmaceutical Biochemistry and Bioanalytics, Pharmaceutical Institute, University of Bonn, An der Immenburg 4, D-53121 Bonn, Germany; (M.-T.H.); (M.S.D.); (R.G.); (B.F.S.)
| | - Benjamin F. Schmalohr
- Pharmaceutical Biochemistry and Bioanalytics, Pharmaceutical Institute, University of Bonn, An der Immenburg 4, D-53121 Bonn, Germany; (M.-T.H.); (M.S.D.); (R.G.); (B.F.S.)
| | - Alpha T. Kodamullil
- Department of Bioinformatics, Fraunhofer Institute for Algorithms and Scientific Computing (SCAI), Schloss Birlinghoven, D-53757 Sankt Augustin, Germany; (D.D.-F.); (Y.G.); (A.T.K.)
- Causality Biomodels, Kinfra Hi-Tech Park, Kalamassery, Cochin, Kerala 683503, India
| | - Diana Imhof
- Pharmaceutical Biochemistry and Bioanalytics, Pharmaceutical Institute, University of Bonn, An der Immenburg 4, D-53121 Bonn, Germany; (M.-T.H.); (M.S.D.); (R.G.); (B.F.S.)
- Correspondence: (D.I.); (M.H.-A.)
| | - Martin Hofmann-Apitius
- Department of Bioinformatics, Fraunhofer Institute for Algorithms and Scientific Computing (SCAI), Schloss Birlinghoven, D-53757 Sankt Augustin, Germany; (D.D.-F.); (Y.G.); (A.T.K.)
- Correspondence: (D.I.); (M.H.-A.)
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10
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Lecerf M, Kanyavuz A, Rossini S, Dimitrov JD. Interaction of clinical-stage antibodies with heme predicts their physiochemical and binding qualities. Commun Biol 2021; 4:391. [PMID: 33758329 PMCID: PMC7988133 DOI: 10.1038/s42003-021-01931-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Accepted: 02/23/2021] [Indexed: 11/09/2022] Open
Abstract
Immunoglobulin repertoires contain a fraction of antibodies that recognize low molecular weight compounds, including some enzymes' cofactors, such as heme. Here, by using a set of 113 samples with variable region sequences matching clinical-stage antibodies, we demonstrated that a considerable number of these antibodies interact with heme. Antibodies that interact with heme possess specific sequence traits of their antigen-binding regions. Moreover they manifest particular physicochemical and functional qualities i.e. increased hydrophobicity, higher propensity of self-binding, higher intrinsic polyreactivity and reduced expression yields. Thus, interaction with heme is a strong predictor of different molecular and functional qualities of antibodies. Notably, these qualities are of high importance for therapeutic antibodies, as their presence was associated with failure of drug candidates to reach clinic. Our study reveled an important facet of information about relationship sequence-function in antibodies. It also offers a convenient tool for detection of liabilities of therapeutic antibodies.
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Affiliation(s)
- Maxime Lecerf
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, Université de Paris, F-75006, Paris, France
| | - Alexia Kanyavuz
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, Université de Paris, F-75006, Paris, France
| | - Sofia Rossini
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, Université de Paris, F-75006, Paris, France
| | - Jordan D Dimitrov
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, Université de Paris, F-75006, Paris, France.
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11
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Revel M, Dimitrov JD. Methods for Assessment of Interactions of Proteins with Heme: Application for Complement Proteins and Immunoglobulins. Methods Mol Biol 2021; 2227:227-236. [PMID: 33847945 DOI: 10.1007/978-1-0716-1016-9_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Heme (Fe protoporphyrin IX) serves as a prosthetic group of numerous proteins implicated in oxidative metabolism. This molecule is abundantly present in the red blood cells where it serves as a cofactor of hemoglobin. As consequence of various pathological conditions, the membrane of red blood cells can be damaged and therefore large quantities of hemoglobin and subsequently heme released in the extracellular space. Since heme is a highly reactive compound, when released extracelluarly it can influence the functional activity of different plasma components. Thus, previous investigations have demonstrated that heme can interact with components of complement system and immunoglobulins, profoundly affecting their functions. Here we propose two basic protocols that can be used for characterization of interaction of free heme with complement proteins and immunoglobulins. The first technique is based on UV-Vis absorbance spectroscopy. It allows general characterization of the heme binding to the protein and estimation of the number of heme binding sites. The second protocol consists in the use of biosensor assay based on surface plasmon resonance. This protocol would be useful for evaluation of heme binding kinetics and equilibrium affinity. Besides for complement components and immunoglobulins, the presented protocols can be utilized for characterization of the interaction of heme with other proteins.
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Affiliation(s)
- Margot Revel
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, USPC, Université Paris Descartes, Université Paris Diderot, Paris, France
| | - Jordan D Dimitrov
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, USPC, Université Paris Descartes, Université Paris Diderot, Paris, France.
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12
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Božinović N, Ajdačić V, Lazic J, Lecerf M, Daventure V, Nikodinovic-Runic J, Opsenica IM, Dimitrov JD. Aromatic Guanylhydrazones for the Control of Heme-Induced Antibody Polyreactivity. ACS OMEGA 2019; 4:20450-20458. [PMID: 31858028 PMCID: PMC6906781 DOI: 10.1021/acsomega.9b01548] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Accepted: 08/06/2019] [Indexed: 06/10/2023]
Abstract
In a healthy immune repertoire, there exists a fraction of polyreactive antibodies that can bind to a variety of unrelated self- and foreign antigens. Apart from naturally polyreactive antibodies, in every healthy individual, there is a fraction of antibody that can gain polyreactivity upon exposure to porphyrin cofactor heme. Molecular mechanisms and biological significance of the appearance of cryptic polyreactivity are not well understood. It is believed that heme acts as an interfacial cofactor between the antibody and the newly recognized antigens. To further test this claim and gain insight into the types of interactions involved in heme binding, we herein investigated the influence of a group of aromatic guanylhydrazone molecules on the heme-induced antibody polyreactivity. From the analysis of SAR and the results of UV-vis absorbance spectroscopy, it was concluded that the most probable mechanism by which the studied molecules inhibit heme-mediated polyreactivity of the antibody is the direct binding to heme, thus preventing heme from binding to antibody and/or antigen. The inhibitory capacity of the most potent compounds was substantially higher than that of chloroquine, a well-known heme binder. Some of the guanylhydrazone molecules were able to induce polyreactivity of the studied antibody themselves, possibly by a mechanism similar to heme. Results described here point to the conclusion that heme indeed must bind to an antibody to induce its polyreactivity, and that both π-stacking interactions and iron coordination contribute to the binding affinity, while certain structures, such as guanylhydrazones, can interfere with these processes.
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Affiliation(s)
- Nina Božinović
- Centre
de Recherche des Cordeliers, INSERM, Sorbonne Université, USPC,
Université Paris Descartes, Université Paris Diderot, F-75006 Paris, France
| | - Vladimir Ajdačić
- University
of Belgrade—Faculty of Chemistry, Studentski trg 16, P.O. Box 51, 11158 Belgrade, Serbia
| | - Jelena Lazic
- University
of Belgrade—Faculty of Chemistry, Studentski trg 16, P.O. Box 51, 11158 Belgrade, Serbia
| | - Maxime Lecerf
- Centre
de Recherche des Cordeliers, INSERM, Sorbonne Université, USPC,
Université Paris Descartes, Université Paris Diderot, F-75006 Paris, France
| | - Victoria Daventure
- Centre
de Recherche des Cordeliers, INSERM, Sorbonne Université, USPC,
Université Paris Descartes, Université Paris Diderot, F-75006 Paris, France
| | - Jasmina Nikodinovic-Runic
- University
of Belgrade—Faculty of Chemistry, Studentski trg 16, P.O. Box 51, 11158 Belgrade, Serbia
- Institute
of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, 11000 Belgrade, Serbia
| | - Igor M. Opsenica
- University
of Belgrade—Faculty of Chemistry, Studentski trg 16, P.O. Box 51, 11158 Belgrade, Serbia
| | - Jordan D. Dimitrov
- Centre
de Recherche des Cordeliers, INSERM, Sorbonne Université, USPC,
Université Paris Descartes, Université Paris Diderot, F-75006 Paris, France
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13
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Hadzhieva M, Vassilev T, Bayry J, Kaveri S, Lacroix-Desmazes S, Dimitrov JD. Relationship between natural and heme-mediated antibody polyreactivity. Biochem Biophys Res Commun 2016; 472:281-6. [PMID: 26926563 DOI: 10.1016/j.bbrc.2016.02.112] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2016] [Accepted: 02/25/2016] [Indexed: 11/28/2022]
Abstract
Polyreactive antibodies represent a considerable fraction of the immune repertoires. Some antibodies acquire polyreactivity post-translationally after interaction with various redox-active substances, including heme. Recently we have demonstrated that heme binding to a naturally polyreactive antibody (SPE7) results in a considerable broadening of the repertoire of recognized antigens. A question remains whether the presence of certain level of natural polyreactivity of antibodies is a prerequisite for heme-induced further extension of antigen binding potential. Here we used a second monoclonal antibody (Hg32) with unknown specificity and absence of intrinsic polyreactivity as a model to study the potential of heme to induce polyreactivity of antibodies. We demonstrated that exposure to heme greatly extends the antigen binding potential of Hg32, suggesting that the intrinsic binding promiscuity is not a prerequisite for the induction of polyreactivity by heme. In addition we compared the kinetics and thermodynamics of the interaction of heme-exposed antibodies with a panel of unrelated antigens. These analyses revealed that the two heme-sensitive antibodies adopt different mechanisms of binding to the same set of antigens. This study contributes to understanding the phenomenon of induced antibody polyreactivity. The data may also be of importance for understanding of physiological and pathological roles of polyreactive antibodies.
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Affiliation(s)
- Maya Hadzhieva
- Stephan Angelov Institute of Microbiology, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria
| | - Tchavdar Vassilev
- Stephan Angelov Institute of Microbiology, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria
| | - Jagadeesh Bayry
- Sorbonne Universités, UPMC Univ Paris 06, UMR_S 1138, Centre de Recherche des Cordeliers, F-75006 Paris, France; INSERM, UMR_S 1138, F-75006 Paris, France; Université Paris Descartes, Sorbonne Paris Cité, UMR_S 1138, F-75006 Paris, France
| | - Srinivas Kaveri
- Sorbonne Universités, UPMC Univ Paris 06, UMR_S 1138, Centre de Recherche des Cordeliers, F-75006 Paris, France; INSERM, UMR_S 1138, F-75006 Paris, France; Université Paris Descartes, Sorbonne Paris Cité, UMR_S 1138, F-75006 Paris, France
| | - Sébastien Lacroix-Desmazes
- Sorbonne Universités, UPMC Univ Paris 06, UMR_S 1138, Centre de Recherche des Cordeliers, F-75006 Paris, France; INSERM, UMR_S 1138, F-75006 Paris, France; Université Paris Descartes, Sorbonne Paris Cité, UMR_S 1138, F-75006 Paris, France
| | - Jordan D Dimitrov
- Sorbonne Universités, UPMC Univ Paris 06, UMR_S 1138, Centre de Recherche des Cordeliers, F-75006 Paris, France; INSERM, UMR_S 1138, F-75006 Paris, France; Université Paris Descartes, Sorbonne Paris Cité, UMR_S 1138, F-75006 Paris, France.
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14
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Roumenina LT, Rayes J, Lacroix-Desmazes S, Dimitrov JD. Heme: Modulator of Plasma Systems in Hemolytic Diseases. Trends Mol Med 2016; 22:200-213. [PMID: 26875449 DOI: 10.1016/j.molmed.2016.01.004] [Citation(s) in RCA: 101] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Revised: 01/11/2016] [Accepted: 01/14/2016] [Indexed: 12/15/2022]
Abstract
Hemolytic diseases such as sickle-cell disease, β-thalassemia, malaria, and autoimmune hemolytic anemia continue to present serious clinical hurdles. In these diseases, lysis of erythrocytes causes the release of hemoglobin and heme into plasma. Extracellular heme has strong proinflammatory potential and activates immune cells and endothelium, thus contributing to disease pathogenesis. Recent studies have revealed that heme can interfere with the function of plasma effector systems such as the coagulation and complement cascades, in addition to the activity of immunoglobulins. Any perturbation in such functions may have severe pathological consequences. In this review we analyze heme interactions with coagulation, complement, and immunoglobulins. Deciphering such interactions to better understand the complex pathogenesis of hemolytic diseases is pivotal.
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Affiliation(s)
- Lubka T Roumenina
- Sorbonne Universités, Université Pierre et Marie Curie (UPMC) Université Paris 06, Unité Mixte de Recherche en Santé (UMRS 1138), Centre de Recherche des Cordeliers, 75006 Paris, France; Institut National de la Santé et de la Recherche Médicale (INSERM), UMRS 1138, Centre de Recherche des Cordeliers, 75006 Paris, France; Université Paris Descartes, Sorbonne Paris Cité, UMRS 1138, Centre de Recherche des Cordeliers, F75006 Paris, France.
| | - Julie Rayes
- Centre for Cardiovascular Sciences, Institute for Biomedical Research, University of Birmingham, Birmingham B15 2TT, UK
| | - Sébastien Lacroix-Desmazes
- Sorbonne Universités, Université Pierre et Marie Curie (UPMC) Université Paris 06, Unité Mixte de Recherche en Santé (UMRS 1138), Centre de Recherche des Cordeliers, 75006 Paris, France; Institut National de la Santé et de la Recherche Médicale (INSERM), UMRS 1138, Centre de Recherche des Cordeliers, 75006 Paris, France; Université Paris Descartes, Sorbonne Paris Cité, UMRS 1138, Centre de Recherche des Cordeliers, F75006 Paris, France
| | - Jordan D Dimitrov
- Sorbonne Universités, Université Pierre et Marie Curie (UPMC) Université Paris 06, Unité Mixte de Recherche en Santé (UMRS 1138), Centre de Recherche des Cordeliers, 75006 Paris, France; Institut National de la Santé et de la Recherche Médicale (INSERM), UMRS 1138, Centre de Recherche des Cordeliers, 75006 Paris, France; Université Paris Descartes, Sorbonne Paris Cité, UMRS 1138, Centre de Recherche des Cordeliers, F75006 Paris, France.
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