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Ge L, Wang N, Chen Z, Xu S, Zhou L. Expression of Siglec-9 in peripheral blood neutrophils was increased and associated with disease severity in patients with AECOPD. Cytokine 2024; 177:156558. [PMID: 38412768 DOI: 10.1016/j.cyto.2024.156558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2023] [Revised: 02/04/2024] [Accepted: 02/20/2024] [Indexed: 02/29/2024]
Abstract
BACKGROUND The pathogenesis and treatment strategies for chronic obstructive pulmonary disease (COPD) require further exploration. Abnormal neutrophil inflammation and the overexpression of neutrophil extracellular traps (NETs) are closely associated with acute exacerbations of COPD (AECOPD). Siglec-9, a specific receptor expressed on neutrophils that inhibits their function, prompted us to investigate its relationship with NETs found in induced sputum and the severity of the disease. METHODS We collected clinical data from patients with AECOPD and assessed the expression of Siglec-9 in peripheral blood neutrophils and the presence of NETs in induced sputum. We then observed the correlation between Siglec-9, the inflammatory response, and the severity of AECOPD. RESULTS We observed an increase in the expression of Siglec-9 in the peripheral blood neutrophils of patients with AECOPD. Concurrently, these patients exhibited more severe clinical symptoms, higher systemic inflammation levels, and a reduced quality of life compared to those with induced sputum NET expression. Further subgroup analysis of AECOPD patients with high Siglec-9 expression revealed worsened quality of life and more severe inflammation, particularly in indicators such as the BODE index, CRP, peripheral blood neutrophil count, IL-6, IL-8, TNF-α expression, and others. Furthermore, we noted a significant increase in NET-specific expression in the sputum of patients with high Siglec-9 expression levels. In comparison to patients with low Siglec-9 expression, those with high expression experienced more systemic inflammatory reactions and a lower quality of life. Correlation analysis of the aforementioned indicators revealed that the expression ratio of Siglec-9 in the peripheral blood of patients correlated with lung function, quality of life, and NETs in the induced sputum of patients with AECOPD. CONCLUSION The increased expression of Siglec-9 in peripheral blood neutrophils of AECOPD patients leads to elevated NET expression in induced sputum, exacerbating the systemic inflammatory response and worsening lung function and quality of life in these patients.
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Affiliation(s)
- Linyang Ge
- Department of Respiratory and Critical Care Medicine, Affiliated Gaochun Hospital, Jiangsu University, Nanjing, Jiangsu, China; Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Nan Wang
- Department of Respiratory and Critical Care Medicine, Affiliated Gaochun Hospital, Jiangsu University, Nanjing, Jiangsu, China; Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Zi Chen
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Shuanglan Xu
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Linfu Zhou
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital, Nanjing Medical University, Nanjing, Jiangsu, China; Institute of Integrative Medicine, Nanjing Medical University, Nanjing, Jiangsu, China.
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Xiao R, Tian Y, Zhang J, Li N, Qi M, Liu L, Wang J, Li Z, Zhang J, Zhao F, Wang T, Tan S, Li C, Wu Z, Yu M, Jiang X, Zhan P, Gao L, Han B, Liu X, Liang X, Ma C. Increased Siglec-9/Siglec-9L interactions on NK cells predict poor HCC prognosis and present a targetable checkpoint for immunotherapy. J Hepatol 2024; 80:792-804. [PMID: 38331327 DOI: 10.1016/j.jhep.2024.01.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 01/16/2024] [Accepted: 01/17/2024] [Indexed: 02/10/2024]
Abstract
BACKGROUND & AIMS Natural killer (NK) cell-based anti-hepatocellular carcinoma (HCC) therapy is an increasingly attractive approach that warrants further study. Siglec-9 interacts with its ligand (Siglec-9L) and restrains NK cell functions, suggesting it is a potential therapeutic target. However, in situ Siglec-9/Siglec-9L interactions in HCC have not been reported, and a relevant interventional strategy is lacking. Herein, we aim to illustrate Siglec-9/Siglec-9L-mediated cell sociology and identify small-molecule inhibitors targeting Siglec-9 that could improve the efficacy of NK cell-based immunotherapy for HCC. METHODS Multiplexed immunofluorescence staining was performed to analyze the expression pattern of Siglec-7, -9 and their ligands in HCC tissues. Then we conducted docking-based virtual screening combined with bio-layer interferometry assays to identify a potent small-molecule Siglec-9 inhibitor. The therapeutic potential was further evaluated in vitro and in hepatoma-bearing NCG mice. RESULTS Siglec-9 expression, rather than Siglec-7, was markedly upregulated on tumor-infiltrating NK cells, which correlated significantly with reduced survival of patients with HCC. Moreover, the number of Siglec-9L+ cells neighboring Siglec-9+ NK cells was increased in HCC tissues and was also associated with tumor recurrence and reduced survival, further suggesting that Siglec-9/Siglec-9L interactions are a potential therapeutic target in HCC. In addition, we identified a small-molecule Siglec-9 inhibitor MTX-3937 which inhibited phosphorylation of Siglec-9 and downstream SHP1 and SHP2. Accordingly, MTX-3937 led to considerable improvement in NK cell function. Notably, MTX-3937 enhanced cytotoxicity of both human peripheral and tumor-infiltrating NK cells. Furthermore, transfer of MTX-3937-treated NK92 cells greatly suppressed the growth of hepatoma xenografts in NCG mice. CONCLUSIONS Our study provides the rationale for HCC treatment by targeting Siglec-9 on NK cells and identifies a promising small-molecule inhibitor against Siglec-9 that enhances NK cell-mediated HCC surveillance. IMPACT AND IMPLICATIONS Herein, we found that Siglec-9 expression is markedly upregulated on tumor-infiltrating natural killer (TINK) cells and correlates with reduced survival in patients with hepatocellular carcinoma (HCC). Moreover, the number of Siglec-9L+ cells neighboring Siglec-9+ NK cells was increased in HCC tissues and was also associated with tumor recurrence and reduced survival. More importantly, we identified a small-molecule inhibitor targeting Siglec-9 that augments NK cell functions, revealing a novel immunotherapy strategy for liver cancer that warrants further clinical investigation.
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Affiliation(s)
- Rong Xiao
- Key Laboratory for Experimental Teratology of Ministry of Education & Department of Immunology, School of Basic Medical Sciences, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan 250012, Shandong, China
| | - Ye Tian
- Key Laboratory for Experimental Teratology of Ministry of Education & Department of Immunology, School of Basic Medical Sciences, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan 250012, Shandong, China; Department of Medicinal Chemistry, Key Laboratory of Chemical Biology of Ministry of Education, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan 250012, Shandong, China
| | - Jiwei Zhang
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology of Ministry of Education, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan 250012, Shandong, China
| | - Na Li
- Key Laboratory for Experimental Teratology of Ministry of Education & Department of Immunology, School of Basic Medical Sciences, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan 250012, Shandong, China
| | - Mei Qi
- Department of Pathology, Shandong University Qilu Hospital, Jinan 250012, Shandong, China
| | - Ling Liu
- Department of Pathology, Dezhou Municipal Hospital, Dezhou 253036, Shandong, China
| | - Jianping Wang
- Department of Liver Transplantation and Hepatobiliary Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, Shandong, China
| | - Zhenyu Li
- Department of Pharmacy, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, Shandong, China
| | - Jie Zhang
- Advanced Medical Research Institute and Key Laboratory for Experimental Teratology of the Ministry of Education, Cheeloo College of Medicine, Shandong University, Jinan 250012, Shandong, China
| | - Fabao Zhao
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology of Ministry of Education, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan 250012, Shandong, China
| | - Tixiao Wang
- Key Laboratory for Experimental Teratology of Ministry of Education & Department of Immunology, School of Basic Medical Sciences, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan 250012, Shandong, China
| | - Siyu Tan
- Key Laboratory for Experimental Teratology of Ministry of Education & Department of Immunology, School of Basic Medical Sciences, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan 250012, Shandong, China
| | - Chunyang Li
- Key Laboratory for Experimental Teratology of the Ministry of Education, Department of Histology and Embryology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan 250012, Shandong, China
| | - Zhuanchang Wu
- Key Laboratory for Experimental Teratology of Ministry of Education & Department of Immunology, School of Basic Medical Sciences, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan 250012, Shandong, China
| | - Mingyan Yu
- Shandong Institute for Food and Drug Control, Jinan 250101, Shandong, China
| | - Xuemei Jiang
- Key Laboratory for Experimental Teratology of Ministry of Education & Department of Immunology, School of Basic Medical Sciences, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan 250012, Shandong, China
| | - Peng Zhan
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology of Ministry of Education, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan 250012, Shandong, China
| | - Lifen Gao
- Key Laboratory for Experimental Teratology of Ministry of Education & Department of Immunology, School of Basic Medical Sciences, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan 250012, Shandong, China
| | - Bo Han
- Department of Pathology, Shandong University Qilu Hospital, Jinan 250012, Shandong, China.
| | - Xinyong Liu
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology of Ministry of Education, School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan 250012, Shandong, China.
| | - Xiaohong Liang
- Key Laboratory for Experimental Teratology of Ministry of Education & Department of Immunology, School of Basic Medical Sciences, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan 250012, Shandong, China.
| | - Chunhong Ma
- Key Laboratory for Experimental Teratology of Ministry of Education & Department of Immunology, School of Basic Medical Sciences, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan 250012, Shandong, China.
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Bhowmik AA, Heikkilä TRH, Polari L, Virta J, Liljenbäck H, Moisio O, Li XG, Viitanen R, Jalkanen S, Koffert J, Toivola DM, Roivainen A. Detection of Intestinal Inflammation by Vascular Adhesion Protein-1-Targeted [ 68Ga]Ga-DOTA- Siglec-9 Positron Emission Tomography in Murine Models of Inflammatory Bowel Disease. Mol Imaging Biol 2024; 26:322-333. [PMID: 38110791 DOI: 10.1007/s11307-023-01885-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 12/01/2023] [Accepted: 12/04/2023] [Indexed: 12/20/2023]
Abstract
PURPOSE Inflammatory bowel disease (IBD) can be imaged with positron emission tomography (PET), but existing PET radiopharmaceuticals have limited diagnostic accuracy. Vascular adhesion protein-1 (VAP-1) is an endothelial cell surface molecule that controls leukocyte extravasation into sites of inflammation. However, the role of inflammation-induced VAP-1 expression in IBD is still unclear. Therefore, this study investigated the utility of VAP-1-targeted [68Ga]Ga-DOTA-Siglec-9 positron emission tomography/computed tomography (PET/CT) for assessing inflammation in two mouse models of IBD. PROCEDURES Studies were performed using K8-/- mice that develop a chronic colitis-phenotype and C57Bl/6NCrl mice with acute intestinal inflammation chemically-induced using 2.5% dextran sodium sulfate (DSS) in drinking water. In both diseased and control mice, uptake of the VAP-1-targeting peptide [68Ga]Ga-DOTA-Siglec-9 was assessed in intestinal regions of interest using in vivo PET/CT, after which ex vivo gamma counting, digital autoradiography, and histopathological analyses were performed. Immunofluorescence staining was performed to determine VAP-1-expression in the intestine, including in samples from patients with ulcerative colitis. RESULTS Intestinal inflammation could be visualized by [68Ga]Ga-DOTA-Siglec-9 PET/CT in two murine models of IBD. In both models, the in vivo PET/CT and ex vivo studies of [68Ga]Ga-DOTA-Siglec-9 uptake were significantly higher than in control mice. The in vivo uptake was increased on average 1.4-fold in the DSS model and 2.0-fold in the K8-/- model. Immunofluorescence staining revealed strong expression of VAP-1 in the inflamed intestines of both mice and patients. CONCLUSIONS This study suggests that the VAP-1-targeting [68Ga]Ga-DOTA-Siglec-9 PET tracer is a promising tool for non-invasive imaging of intestinal inflammation. Future studies in patients with IBD and evaluation of the potential value of [68Ga]Ga-DOTA-Siglec-9 in diagnosis and monitoring of the disease are warranted.
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Affiliation(s)
- Achol A Bhowmik
- Turku PET Centre, University of Turku, Kiinamyllynkatu 4-8, FI-20520, Turku, Finland
| | - Taina R H Heikkilä
- Cell Biology, Biosciences, Faculty of Science and Engineering, Åbo Akademi University, Turku, Finland
- InFLAMES Research Flagship, Åbo Akademi University, Turku, Finland
| | - Lauri Polari
- Cell Biology, Biosciences, Faculty of Science and Engineering, Åbo Akademi University, Turku, Finland
- InFLAMES Research Flagship, Åbo Akademi University, Turku, Finland
| | - Jenni Virta
- Turku PET Centre, University of Turku, Kiinamyllynkatu 4-8, FI-20520, Turku, Finland
| | - Heidi Liljenbäck
- Turku PET Centre, University of Turku, Kiinamyllynkatu 4-8, FI-20520, Turku, Finland
- Turku Center for Disease Modelling, University of Turku, Turku, Finland
| | - Olli Moisio
- Turku PET Centre, University of Turku, Kiinamyllynkatu 4-8, FI-20520, Turku, Finland
| | - Xiang-Guo Li
- Turku PET Centre, University of Turku, Kiinamyllynkatu 4-8, FI-20520, Turku, Finland
- Department of Chemistry, University of Turku, Turku, Finland
- InFLAMES Research Flagship, University of Turku, Turku, Finland
| | - Riikka Viitanen
- Turku PET Centre, University of Turku, Kiinamyllynkatu 4-8, FI-20520, Turku, Finland
| | - Sirpa Jalkanen
- InFLAMES Research Flagship, University of Turku, Turku, Finland
- MediCity Research Laboratory, University of Turku, Turku, Finland
| | - Jukka Koffert
- Turku PET Centre, University of Turku, Kiinamyllynkatu 4-8, FI-20520, Turku, Finland
- InFLAMES Research Flagship, University of Turku, Turku, Finland
- Department of Gastroenterology, Turku University Hospital, Turku, Finland
| | - Diana M Toivola
- Cell Biology, Biosciences, Faculty of Science and Engineering, Åbo Akademi University, Turku, Finland
- InFLAMES Research Flagship, Åbo Akademi University, Turku, Finland
- Turku Center for Disease Modelling, University of Turku, Turku, Finland
| | - Anne Roivainen
- Turku PET Centre, University of Turku, Kiinamyllynkatu 4-8, FI-20520, Turku, Finland.
- Turku Center for Disease Modelling, University of Turku, Turku, Finland.
- InFLAMES Research Flagship, University of Turku, Turku, Finland.
- Turku PET Centre, Turku University Hospital, Turku, Finland.
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Jahandideh A, Virta J, Li XG, Liljenbäck H, Moisio O, Ponkamo J, Rajala N, Alix M, Lehtonen J, Mäyränpää MI, Salminen TA, Knuuti J, Jalkanen S, Saraste A, Roivainen A. Vascular adhesion protein-1-targeted PET imaging in autoimmune myocarditis. J Nucl Cardiol 2023; 30:2760-2772. [PMID: 37758963 PMCID: PMC10682147 DOI: 10.1007/s12350-023-03371-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Accepted: 08/06/2023] [Indexed: 09/29/2023]
Abstract
BACKGROUND Vascular adhesion protein-1 (VAP-1) is an adhesion molecule and primary amine oxidase, and Gallium-68-labeled 1,4,7,10-tetraazacyclododecane-N,N',N″,N‴-tetra-acetic acid conjugated sialic acid-binding immunoglobulin-like lectin 9 motif containing peptide ([68Ga]Ga-DOTA-Siglec-9) is a positron emission tomography (PET) tracer targeting VAP-1. We evaluated the feasibility of PET imaging with [68Ga]Ga-DOTA-Siglec-9 for the detection of myocardial lesions in rats with autoimmune myocarditis. METHODS Rats (n = 9) were immunized twice with porcine cardiac myosin in complete Freund's adjuvant. Control rats (n = 6) were injected with Freund's adjuvant alone. On day 21, in vivo PET/computed tomography (CT) imaging with [68Ga]Ga-DOTA-Siglec-9 was performed, followed by ex vivo autoradiography, histology, and immunohistochemistry of tissue sections. In addition, myocardial samples from three patients with cardiac sarcoidosis were studied. RESULTS [68Ga]Ga-DOTA-Siglec-9 PET/CT images of immunized rats showed higher uptake in myocardial lesions than in myocardium outside lesions (SUVmean, 0.5 ± 0.1 vs 0.3 ± 0.1; P = .003) or control rats (SUVmean, 0.2 ± 0.03; P < .0001), which was confirmed by ex vivo autoradiography of tissue sections. Immunohistochemistry showed VAP-1-positive staining in lesions of rats with myocarditis and in patients with cardiac sarcoidosis. CONCLUSION VAP-1-targeted [68Ga]Ga-DOTA-Siglec-9 PET is a potential novel technique for the detection of myocardial lesions.
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Affiliation(s)
- Arghavan Jahandideh
- Turku PET Centre, University of Turku, Åbo Akademi University and Turku University Hospital, 20520, Turku, Finland
| | - Jenni Virta
- Turku PET Centre, University of Turku, Åbo Akademi University and Turku University Hospital, 20520, Turku, Finland
| | - Xiang-Guo Li
- Turku PET Centre, University of Turku, Åbo Akademi University and Turku University Hospital, 20520, Turku, Finland
- InFLAMES Research Flagship Center, University of Turku, Turku, Finland
- Department of Chemistry, University of Turku, Turku, Finland
| | - Heidi Liljenbäck
- Turku PET Centre, University of Turku, Åbo Akademi University and Turku University Hospital, 20520, Turku, Finland
- Turku Center for Disease Modeling, University of Turku, Turku, Finland
| | - Olli Moisio
- Turku PET Centre, University of Turku, Åbo Akademi University and Turku University Hospital, 20520, Turku, Finland
| | - Jesse Ponkamo
- Turku PET Centre, University of Turku, Åbo Akademi University and Turku University Hospital, 20520, Turku, Finland
| | - Noora Rajala
- Turku PET Centre, University of Turku, Åbo Akademi University and Turku University Hospital, 20520, Turku, Finland
| | - Marion Alix
- Structural Bioinformatics Laboratory, Åbo Akademi University, Turku, Finland
| | - Jukka Lehtonen
- Heart and Lung Center, Helsinki University and Helsinki University Hospital, Helsinki, Finland
| | - Mikko I Mäyränpää
- Department of Pathology, Helsinki University and Helsinki University Hospital, Helsinki, Finland
| | - Tiina A Salminen
- InFLAMES Research Flagship Center, University of Turku, Turku, Finland
- Structural Bioinformatics Laboratory, Åbo Akademi University, Turku, Finland
| | - Juhani Knuuti
- Turku PET Centre, University of Turku, Åbo Akademi University and Turku University Hospital, 20520, Turku, Finland
- InFLAMES Research Flagship Center, University of Turku, Turku, Finland
| | - Sirpa Jalkanen
- InFLAMES Research Flagship Center, University of Turku, Turku, Finland
- MediCity Research Laboratory and Institute of Biomedicine, University of Turku, Turku, Finland
| | - Antti Saraste
- Turku PET Centre, University of Turku, Åbo Akademi University and Turku University Hospital, 20520, Turku, Finland
- Heart Center, Turku University Hospital and University of Turku, Turku, Finland
| | - Anne Roivainen
- Turku PET Centre, University of Turku, Åbo Akademi University and Turku University Hospital, 20520, Turku, Finland.
- InFLAMES Research Flagship Center, University of Turku, Turku, Finland.
- Turku Center for Disease Modeling, University of Turku, Turku, Finland.
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Zhang Y, Jin K, Dai Y, Hu N, Zhou T, Yang Z, Ding N, Zhang R, Xu R, Zhao J, Han Y, Zhu C, Zhu J, Li J. The change of Siglec-9 expression in peripheral blood NK cells of SFTS patients can affect the function of NK cells. Immunol Lett 2023; 263:97-104. [PMID: 37865296 DOI: 10.1016/j.imlet.2023.10.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 10/17/2023] [Accepted: 10/18/2023] [Indexed: 10/23/2023]
Abstract
OBJECTIVES To investigate the changes and mechanism of Siglec-9 on NK cells in peripheral blood of patients with severe fever with thrombocytopenia syndrome (SFTS). METHODS First, we used single-cell RNA sequencing to analyze the frequency of NK cells in Peripheral Blood Mononuclear Cells (PBMCs) of SFTS patients and healthy controls (HCs), as well as the differences in the genes on NK cells. Secondly, we analyzed the expression of Siglec-9 and other receptors on NK cells by flow cytometry. Thirdly, we analyzed the correlation between Siglec-9 on NK cells and DBV viral load in plasma. RESULTS Compared with HCs, the frequency of NK cells in peripheral blood of SFTS patients was significantly decreased, and the activating receptors on NK cells were reduced. The expression of Siglec-9 on NK cells and the frequency of Siglec-9+NK cells decreased significantly in SFTS patients. The expression of Siglec-9 on CD16+CD56dim NK cells was negatively correlated with DBV viral load. In addition, Siglec-9+NK cells expressed higher levels of activating receptors and exhibited stronger effector functions than Siglec-9-NK cells. CONCLUSIONS The decreased expression of Siglec-9 on NK cells predicts NK cell dysfunction in SFTS patients, suggesting that Siglec-9 may be a potential marker for functional NK cell subsets in SFTS patients.
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Affiliation(s)
- Yaqin Zhang
- Department of Infectious Diseases, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Ke Jin
- Department of Infectious Diseases, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Yan Dai
- Department of Infectious Diseases, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Nannan Hu
- Department of Infectious Diseases, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Tingting Zhou
- Huadong Medical Institute of Biotechniques, Nanjing, China
| | - Zhan Yang
- Huadong Medical Institute of Biotechniques, Nanjing, China
| | - Ning Ding
- Department of Obstetrics and Gynecology, Women's Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Care Hospital, Nanjing, China
| | - Rui Zhang
- Institute of Medical Technology, Peking University Health Science Center, Beijing, China
| | - Ruowei Xu
- School of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Jiaying Zhao
- Department of Infectious Diseases, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Yaping Han
- Department of Infectious Diseases, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Chuanlong Zhu
- Department of Infectious Diseases, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Jin Zhu
- Huadong Medical Institute of Biotechniques, Nanjing, China.
| | - Jun Li
- Department of Infectious Diseases, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China.
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Miralda I, Samanas NB, Seo AJ, Foronda JS, Sachen J, Hui Y, Morrison SD, Oskeritzian CA, Piliponsky AM. Siglec-9 is an inhibitory receptor on human mast cells in vitro. J Allergy Clin Immunol 2023; 152:711-724.e14. [PMID: 37100120 PMCID: PMC10524464 DOI: 10.1016/j.jaci.2023.04.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 04/04/2023] [Accepted: 04/13/2023] [Indexed: 04/28/2023]
Abstract
BACKGROUND Mast cell activation is critical for the development of allergic diseases. Ligation of sialic acid-binding immunoglobin-like lectins (Siglecs), such as Siglec-6, -7, and -8 as well as CD33, have been shown to inhibit mast cell activation. Recent studies showed that human mast cells express Siglec-9, an inhibitory receptor also expressed by neutrophils, monocytes, macrophages, and dendritic cells. OBJECTIVE We aimed to characterize Siglec-9 expression and function in human mast cells in vitro. METHODS We assessed the expression of Siglec-9 and Siglec-9 ligands on human mast cell lines and human primary mast cells by real-time quantitative PCR, flow cytometry, and confocal microscopy. We used a clustered regularly interspaced short palindromic repeats (CRISPR)/CRISPR-associated protein 9 (Cas9) gene editing approach to disrupt the SIGLEC9 gene. We evaluated Siglec-9 inhibitory activity on mast cell function by using native Siglec-9 ligands, glycophorin A (GlycA), and high-molecular-weight hyaluronic acid, a monoclonal antibody against Siglec-9, and coengagement of Siglec-9 with the high-affinity receptor for IgE (FcεRI). RESULTS Human mast cells express Siglec-9 and Siglec-9 ligands. SIGLEC9 gene disruption resulted in increased expression of activation markers at baseline and increased responsiveness to IgE-dependent and IgE-independent stimulation. Pretreatment with GlycA or high-molecular-weight hyaluronic acid followed by IgE-dependent or -independent stimulation had an inhibitory effect on mast cell degranulation. Coengagement of Siglec-9 with FcεRI in human mast cells resulted in reduced degranulation, arachidonic acid production, and chemokine release. CONCLUSIONS Siglec-9 and its ligands play an important role in limiting human mast cell activation in vitro.
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Affiliation(s)
- Irina Miralda
- Center for Immunity and Immunotherapies, Seattle Children's Research Institute, Seattle, Wash
| | - Nyssa B Samanas
- Center for Immunity and Immunotherapies, Seattle Children's Research Institute, Seattle, Wash
| | - Albert J Seo
- Center for Immunity and Immunotherapies, Seattle Children's Research Institute, Seattle, Wash
| | - Jake S Foronda
- Center for Immunity and Immunotherapies, Seattle Children's Research Institute, Seattle, Wash
| | - Josie Sachen
- Center for Immunity and Immunotherapies, Seattle Children's Research Institute, Seattle, Wash
| | - Yvonne Hui
- University of South Carolina School of Medicine, Columbia, SC
| | - Shane D Morrison
- Department of Surgery, Division of Plastic Surgery, Seattle Children's Hospital, Seattle, Wash
| | | | - Adrian M Piliponsky
- Center for Immunity and Immunotherapies, Seattle Children's Research Institute, Seattle, Wash; Department of Pediatrics, University of Washington School of Medicine, Seattle, Wash; Department of Pathology, University of Washington School of Medicine, Seattle, Wash; Department of Global Health, University of Washington School of Medicine, Seattle, Wash.
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Wu Y, Liu Q, Xie Y, Zhu J, Zhang S, Ge Y, Guo J, Luo N, Huang W, Xu R, Liu S, Cheng Z. MUC16 stimulates neutrophils to an inflammatory and immunosuppressive phenotype in ovarian cancer. J Ovarian Res 2023; 16:181. [PMID: 37644468 PMCID: PMC10466733 DOI: 10.1186/s13048-023-01207-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2022] [Accepted: 06/16/2023] [Indexed: 08/31/2023] Open
Abstract
BACKGROUND MUC16 (CA125) is a commonly used tumor marker for ovarian cancer screening and reported to be an immunosuppressive factor by acting on the sialic acid-binding immunoglobulin-like lectin-9 (Siglec-9) on the surface of natural killer cells (NK cells), B cells, and monocytes. However, the role of MUC16 on neutrophils in the tumor microenvironment remains to be further explored. METHODS The correlation between the proportion and count of peripheral blood cells, serum inflammatory-related factors and serum MUC16 (CA125) level in patients was constructed based on clinical samples. RNAseq data was obtained from TCGA and sequencing of ovarian cancer tissues, followed by TIMER immune cell infiltration and correlation analysis. Ovarian cancer organoid was constructed to stimulate neutrophils with immunophenotype identification by qPCR and flow cytometry. MUC16 protein stimulation to neutrophils validated the role of MUC16 under the analysis of RNA sequencing and inhibition of NK cytotoxicity in vitro. RESULTS The serum MUC16 level was positively correlated with the proportion and count of peripheral blood neutrophils, neutrophil-to-lymphocyte ratio (NLR) and inflammatory factors IL-6, IL-8, IL-10 and IL-2R. Siglec-9, the receptor of MUC16, was expressed on neutrophils and was positively correlated to neutrophil infiltration in ovarian cancer. After the stimulation of ovarian cancer organoids and MUC16 respectively, the proportions of CD11b+, CD66b+, and ICAM-1+ neutrophils were significantly increased, while the proportion of CXCR4+ neutrophils was slightly decreased, with increasing of of inflammatory factors MMP9, IL-8, OSM, IL-1β, TNF-α, CXCL3, and ROS. RNA-sequencing analysis revealed that inflammatory response, TNFA signaling pathway, and IL6-related pathway were upregulated in MUC16-stimulated neutrophils, accompanied by high expression of immunosuppression-related factors HHLA2, IL-6, TNFRSF9, ADORA2A, CD274 (PD-L1), and IDO1. NK cytotoxicity was decreased when treated by supernanant of MUC16-stimulated neutrophils in vitro. CONCLUSION MUC16 acted on neutrophils by Siglec-9 leading to an inflammatory and immunosuppressive phenotype in ovarian cancer.
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Affiliation(s)
- Yuliang Wu
- Department of Obstetrics and Gynecology, Shanghai Tenth People's Hospital, Tongji University, 301 Yanchang Road, Shanghai, 200072, China
- Gynecologic Minimally Invasive Surgery Research Center, Tongji University School of Medicine, 1239 Siping Road, Shanghai, 200092, China
| | - Qi Liu
- Department of Obstetrics and Gynecology, Shanghai Tenth People's Hospital, Tongji University, 301 Yanchang Road, Shanghai, 200072, China
- Gynecologic Minimally Invasive Surgery Research Center, Tongji University School of Medicine, 1239 Siping Road, Shanghai, 200092, China
| | - Yan Xie
- Department of Obstetrics and Gynecology, Shanghai Tenth People's Hospital, Tongji University, 301 Yanchang Road, Shanghai, 200072, China
- Gynecologic Minimally Invasive Surgery Research Center, Tongji University School of Medicine, 1239 Siping Road, Shanghai, 200092, China
| | - Jihui Zhu
- Department of Obstetrics and Gynecology, Shanghai Tenth People's Hospital, Tongji University, 301 Yanchang Road, Shanghai, 200072, China
| | - Sai Zhang
- Department of Obstetrics and Gynecology, Shanghai Tenth People's Hospital, Tongji University, 301 Yanchang Road, Shanghai, 200072, China
| | - Yao Ge
- Department of Obstetrics and Gynecology, Shanghai Tenth People's Hospital, Tongji University, 301 Yanchang Road, Shanghai, 200072, China
- Gynecologic Minimally Invasive Surgery Research Center, Tongji University School of Medicine, 1239 Siping Road, Shanghai, 200092, China
| | - Jing Guo
- Department of Obstetrics and Gynecology, Shanghai Tenth People's Hospital, Tongji University, 301 Yanchang Road, Shanghai, 200072, China
- Gynecologic Minimally Invasive Surgery Research Center, Tongji University School of Medicine, 1239 Siping Road, Shanghai, 200092, China
| | - Ning Luo
- Department of Obstetrics and Gynecology, Shanghai Tenth People's Hospital, Tongji University, 301 Yanchang Road, Shanghai, 200072, China
- Gynecologic Minimally Invasive Surgery Research Center, Tongji University School of Medicine, 1239 Siping Road, Shanghai, 200092, China
| | - Wei Huang
- Department of Obstetrics and Gynecology, Shanghai Tenth People's Hospital, Tongji University, 301 Yanchang Road, Shanghai, 200072, China
- Gynecologic Minimally Invasive Surgery Research Center, Tongji University School of Medicine, 1239 Siping Road, Shanghai, 200092, China
| | - Runping Xu
- Department of Obstetrics and Gynecology, Shanghai Tenth People's Hospital, Tongji University, 301 Yanchang Road, Shanghai, 200072, China
- Gynecologic Minimally Invasive Surgery Research Center, Tongji University School of Medicine, 1239 Siping Road, Shanghai, 200092, China
| | - Shupeng Liu
- Department of Obstetrics and Gynecology, Shanghai Tenth People's Hospital, Tongji University, 301 Yanchang Road, Shanghai, 200072, China.
- Gynecologic Minimally Invasive Surgery Research Center, Tongji University School of Medicine, 1239 Siping Road, Shanghai, 200092, China.
| | - Zhongping Cheng
- Department of Obstetrics and Gynecology, Shanghai Tenth People's Hospital, Tongji University, 301 Yanchang Road, Shanghai, 200072, China.
- Gynecologic Minimally Invasive Surgery Research Center, Tongji University School of Medicine, 1239 Siping Road, Shanghai, 200092, China.
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Lustig M, Chan C, Jansen JHM, Bräutigam M, Kölling MA, Gehlert CL, Baumann N, Mester S, Foss S, Andersen JT, Bastian L, Sondermann P, Peipp M, Burger R, Leusen JHW, Valerius T. Disruption of the sialic acid/ Siglec-9 axis improves antibody-mediated neutrophil cytotoxicity towards tumor cells. Front Immunol 2023; 14:1178817. [PMID: 37346044 PMCID: PMC10279866 DOI: 10.3389/fimmu.2023.1178817] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Accepted: 05/22/2023] [Indexed: 06/23/2023] Open
Abstract
Upregulation of surface expressed sialoglycans on tumor cells is one of the mechanisms which promote tumor growth and progression. Specifically, the interactions of sialic acids with sialic acid-binding immunoglobulin-like lectins (Siglecs) on lymphoid or myeloid cells transmit inhibitory signals and lead to suppression of anti-tumor responses. Here, we show that neutrophils express among others Siglec-9, and that EGFR and HER2 positive breast tumor cells express ligands for Siglec-9. Treatment of tumor cells with neuraminidases or a sialyl transferase inhibitor significantly reduced binding of a soluble recombinant Siglec-9-Fc fusion protein, while EGFR and HER2 expression remained unchanged. Importantly, the cytotoxic activity of neutrophils driven by therapeutic EGFR or HER2 antibodies in vitro was increased by blocking the sialic acid/Siglec interaction, either by reducing tumor cell sialylation or by a Siglec-9 blocking antibody containing an effector silenced Fc domain. In vivo a short-term xenograft mouse model confirmed the improved therapeutic efficacy of EGFR antibodies against sialic acid depleted, by a sialyltransferase inhibitor, tumor cells compared to untreated cells. Our studies demonstrate that sialic acid/Siglec interactions between tumor cells and myeloid cells can impair antibody dependent tumor cell killing, and that Siglec-9 on polymorphonuclear cells (PMN) is critically involved. Considering that PMN are often a highly abundant cell population in the tumor microenvironment, Siglec-9 constitutes a promising target for myeloid checkpoint blockade to improve antibody-based tumor immunotherapy.
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Affiliation(s)
- Marta Lustig
- Division of Stem Cell Transplantation and Immunotherapy, Department of Medicine II, Christian-Albrechts-University Kiel and University Medical Center Schleswig-Holstein Campus Kiel, Kiel, Germany
| | - Chilam Chan
- Center for Translational Immunology, University Medical Center Utrecht, Utrecht, Netherlands
| | - J. H. Marco Jansen
- Center for Translational Immunology, University Medical Center Utrecht, Utrecht, Netherlands
| | | | - Max A. Kölling
- Division of Stem Cell Transplantation and Immunotherapy, Department of Medicine II, Christian-Albrechts-University Kiel and University Medical Center Schleswig-Holstein Campus Kiel, Kiel, Germany
| | - Carina Lynn Gehlert
- Division of Antibody-Based Immunotherapy, Department of Medicine II, Christian-Albrechts-University Kiel and University Medical Center Schleswig-Holstein Campus Kiel, Kiel, Germany
| | - Niklas Baumann
- Division of Stem Cell Transplantation and Immunotherapy, Department of Medicine II, Christian-Albrechts-University Kiel and University Medical Center Schleswig-Holstein Campus Kiel, Kiel, Germany
| | - Simone Mester
- Institute for Clinical Medicine, Department of Pharmacology, University of Oslo and Oslo University Hospital, Oslo, Norway
- Institute for Clinical Medicine, Department of Immunology, University of Oslo and Oslo University Hospital, Oslo, Norway
| | - Stian Foss
- Institute for Clinical Medicine, Department of Pharmacology, University of Oslo and Oslo University Hospital, Oslo, Norway
- Institute for Clinical Medicine, Department of Immunology, University of Oslo and Oslo University Hospital, Oslo, Norway
| | - Jan Terje Andersen
- Institute for Clinical Medicine, Department of Pharmacology, University of Oslo and Oslo University Hospital, Oslo, Norway
- Institute for Clinical Medicine, Department of Immunology, University of Oslo and Oslo University Hospital, Oslo, Norway
| | - Lorenz Bastian
- Department of Medicine II, Christian-Albrechts-University Kiel and University Medical Center Schleswig-Holstein, Kiel, Germany
| | | | - Matthias Peipp
- Division of Antibody-Based Immunotherapy, Department of Medicine II, Christian-Albrechts-University Kiel and University Medical Center Schleswig-Holstein Campus Kiel, Kiel, Germany
| | - Renate Burger
- Division of Stem Cell Transplantation and Immunotherapy, Department of Medicine II, Christian-Albrechts-University Kiel and University Medical Center Schleswig-Holstein Campus Kiel, Kiel, Germany
| | - Jeanette H. W. Leusen
- Center for Translational Immunology, University Medical Center Utrecht, Utrecht, Netherlands
| | - Thomas Valerius
- Division of Stem Cell Transplantation and Immunotherapy, Department of Medicine II, Christian-Albrechts-University Kiel and University Medical Center Schleswig-Holstein Campus Kiel, Kiel, Germany
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Saini P, Adeniji OS, Bordoloi D, Kinslow J, Martinson J, Parent DM, Hong KY, Koshy J, Kulkarni AJ, Zilberstein NF, Balk RA, Moy JN, Giron LB, Tracy RP, Keshavarzian A, Muthumani K, Landay A, Weiner DB, Abdel-Mohsen M. Siglec-9 Restrains Antibody-Dependent Natural Killer Cell Cytotoxicity against SARS-CoV-2. mBio 2023; 14:e0339322. [PMID: 36728420 PMCID: PMC9973332 DOI: 10.1128/mbio.03393-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2022] [Accepted: 12/23/2022] [Indexed: 02/03/2023] Open
Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection alters the immunological profiles of natural killer (NK) cells. However, whether NK antiviral functions are impaired during severe coronavirus disease 2019 (COVID-19) and what host factors modulate these functions remain unclear. We found that NK cells from hospitalized COVID-19 patients degranulate less against SARS-CoV-2 antigen-expressing cells (in direct cytolytic and antibody-dependent cell cytotoxicity [ADCC] assays) than NK cells from mild COVID-19 patients or negative controls. The lower NK degranulation was associated with higher plasma levels of SARS-CoV-2 nucleocapsid antigen. Phenotypic and functional analyses showed that NK cells expressing the glyco-immune checkpoint Siglec-9 elicited higher ADCC than Siglec-9- NK cells. Consistently, Siglec-9+ NK cells exhibit an activated and mature phenotype with higher expression of CD16 (FcγRIII; mediator of ADCC), CD57 (maturation marker), and NKG2C (activating receptor), along with lower expression of the inhibitory receptor NKG2A, than Siglec-9- CD56dim NK cells. These data are consistent with the concept that the NK cell subpopulation expressing Siglec-9 is highly activated and cytotoxic. However, the Siglec-9 molecule itself is an inhibitory receptor that restrains NK cytotoxicity during cancer and other viral infections. Indeed, blocking Siglec-9 significantly enhanced the ADCC-mediated NK degranulation and lysis of SARS-CoV-2-antigen-positive target cells. These data support a model in which the Siglec-9+ CD56dim NK subpopulation is cytotoxic even while it is restrained by the inhibitory effects of Siglec-9. Alleviating the Siglec-9-mediated restriction on NK cytotoxicity may further improve NK immune surveillance and presents an opportunity to develop novel immunotherapeutic tools against SARS-CoV-2 infected cells. IMPORTANCE One mechanism that cancer cells use to evade natural killer cell immune surveillance is by expressing high levels of sialoglycans, which bind to Siglec-9, a glyco-immune checkpoint molecule on NK cells. This binding inhibits NK cell cytotoxicity. Several viruses, such as hepatitis B virus (HBV) and HIV, also use a similar mechanism to evade NK surveillance. We found that NK cells from SARS-CoV-2-hospitalized patients are less able to function against cells expressing SARS-CoV-2 Spike protein than NK cells from SARS-CoV-2 mild patients or uninfected controls. We also found that the cytotoxicity of the Siglec-9+ NK subpopulation is indeed restrained by the inhibitory nature of the Siglec-9 molecule and that blocking Siglec-9 can enhance the ability of NK cells to target cells expressing SARS-CoV-2 antigens. Our results suggest that a targetable glyco-immune checkpoint mechanism, Siglec-9/sialoglycan interaction, may contribute to the ability of SARS-CoV-2 to evade NK immune surveillance.
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Affiliation(s)
- Pratima Saini
- The Wistar Institute, Philadelphia, Pennsylvania, USA
| | | | | | | | | | | | - Kai Ying Hong
- The Wistar Institute, Philadelphia, Pennsylvania, USA
| | - Jane Koshy
- The Wistar Institute, Philadelphia, Pennsylvania, USA
| | | | | | | | | | | | | | | | - Kar Muthumani
- The Wistar Institute, Philadelphia, Pennsylvania, USA
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Huang J, Li M, Mei B, Li J, Zhu Y, Guo Q, Huang J, Zhang G. Whole-cell tumor vaccines desialylated to uncover tumor antigenic Gal/GalNAc epitopes elicit anti-tumor immunity. J Transl Med 2022; 20:496. [PMID: 36316782 PMCID: PMC9620617 DOI: 10.1186/s12967-022-03714-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Accepted: 10/20/2022] [Indexed: 12/03/2022] Open
Abstract
BACKGROUND Aberrant sialoglycans on the surface of tumor cells shield potential tumor antigen epitopes, escape recognition, and suppress activation of immunocytes. α2,3/α2,6Gal- and α2,6GalNAc (Gal/GalNAc)-linked sialic acid residues of sialoglycans could affect macrophage galactose-type lectins (MGL) mediated-antigen uptake and presentation and promote sialic acid-binding immunoglobulin-like lectins (Siglecs) mediated-immunosuppression. Desialylating sialoglycans on tumor cells could present tumor antigens with Gal/GalNAc residues and overcome glyco-immune checkpoints. Thus, we explored whether vaccination with desialylated whole-cell tumor vaccines (DWCTVs) triggers anti-tumor immunity in ovarian cancer (OC). METHODS Sialic acid (Sia) and Gal/GalNAc residues on OC A2780, OVCAR3, and ID8 cells treated with α2-3 neuraminidase (α2-3NA) and α2-6NA, and Sigec-9 or Siglec-E and MGL on DCs pulsed with desialylated OC cells were identified using flow cytometry (FCM); RT-qPCR determined IFNG expression of T cells, TRBV was sequenced using Sanger sequencing and cytotoxicity of αβ T cells was measured with LDH assay; Anti-tumor immunity in vivo was validated via vaccination with desialylated whole-cell ID8 vaccine (ID8 DWCTVs). RESULTS Gal/GalNAc but not Sia residues were significantly increased in the desialylated OC cells. α2-3NA-modified DWCTV increased MGL but decreased Siglec-9 or Siglec E expression on DCs. MGLbright/Siglec-9dim DCs significantly up-regulated IFNG expression and CD4/CD8 ratio of T cells and diversified the TCR repertoire of αβ T-cells that showed enhanced cytotoxic activity. Vaccination with α2-3NA-modified ID8 DWCTVs increased MGLbright/Siglec-Edim DCs in draining lymph nodes, limited tumor growth, and extended survival in tumor-challenged mice. CONCLUSION Desialylated tumor cell vaccine could promote anti-tumor immunity and provide a strategy for OC immunotherapy in a clinical setting.
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Affiliation(s)
- Jianmei Huang
- grid.54549.390000 0004 0369 4060School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Meiying Li
- grid.415880.00000 0004 1755 2258Biochemistry and Molecular Biology, Sichuan Cancer Institute, Chengdu, China
| | - Bingjie Mei
- grid.54549.390000 0004 0369 4060School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Junyang Li
- grid.54549.390000 0004 0369 4060School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Yi Zhu
- grid.54549.390000 0004 0369 4060Department of Ultrasound, Sichuan Cancer Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Qiaoshan Guo
- grid.415880.00000 0004 1755 2258Biochemistry and Molecular Biology, Sichuan Cancer Institute, Chengdu, China
| | - Jianming Huang
- grid.415880.00000 0004 1755 2258Biochemistry and Molecular Biology, Sichuan Cancer Institute, Chengdu, China
| | - Guonan Zhang
- grid.54549.390000 0004 0369 4060School of Medicine, University of Electronic Science and Technology of China, Chengdu, China ,grid.54549.390000 0004 0369 4060Department of Gynecologic Oncology, Sichuan Cancer Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
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Abstract
INTRODUCTION Radiotracers are widely used in medical imaging, using techniques of gamma-camera imaging (scintigraphy and SPECT) or positron emission tomography (PET). In bone marrow infection, there is no single routine test available that can detect infection with sufficiently high diagnostic accuracy. Here, we review radiotracers used for imaging of bone marrow infection, also known as osteomyelitis, with a focus on why these molecules are relevant for the task, based on their physiological uptake mechanisms. The review comprises [67Ga]Ga-citrate, radiolabelled leukocytes, radiolabelled nanocolloids (bone marrow) and radiolabelled phosphonates (bone structure), and [18F]FDG as established radiotracers for bone marrow infection imaging. Tracers that are under development or testing for this purpose include [68Ga]Ga-citrate, [18F]FDG, [18F]FDS and other non-glucose sugar analogues, [15O]water, [11C]methionine, [11C]donepezil, [99mTc]Tc-IL-8, [68Ga]Ga-Siglec-9, phage-display selected peptides, and the antimicrobial peptide [99mTc]Tc-UBI29-41 or [68Ga]Ga-NOTA-UBI29-41. CONCLUSION Molecular radiotracers allow studies of physiological processes such as infection. None of the reviewed molecules are ideal for the imaging of infections, whether bone marrow or otherwise, but each can give information about a separate aspect such as physiology or biochemistry. Knowledge of uptake mechanisms, pitfalls, and challenges is useful in both the use and development of medically relevant radioactive tracers.
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Affiliation(s)
- Lars Jødal
- Department of Nuclear Medicine, Aalborg University Hospital, DK-9000 Aalborg, Denmark;
| | - Pia Afzelius
- Zealand Hospital, Køge, Copenhagen University Hospital, DK-4600 Køge, Denmark;
| | - Aage Kristian Olsen Alstrup
- Department of Nuclear Medicine & PET, Aarhus University Hospital, DK-8200 Aarhus, Denmark;
- Department of Clinical Medicine, Aarhus University, DK-8000 Aarhus, Denmark
| | - Svend Borup Jensen
- Department of Nuclear Medicine, Aalborg University Hospital, DK-9000 Aalborg, Denmark;
- Department of Chemistry and Biosciences, Aalborg University, DK-9220 Aalborg, Denmark
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12
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González G, Lakatos K, Hoballah J, Fritz-Klaus R, Al-Johani L, Brooker J, Jeong S, Evans CL, Krauledat P, Cramer DW, Hoffman RA, Hansen WP, Patankar MS. Characterization of Cell-Bound CA125 on Immune Cell Subtypes of Ovarian Cancer Patients Using a Novel Imaging Platform. Cancers (Basel) 2021; 13:2072. [PMID: 33922973 PMCID: PMC8123299 DOI: 10.3390/cancers13092072] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Revised: 04/14/2021] [Accepted: 04/22/2021] [Indexed: 12/11/2022] Open
Abstract
MUC16, a sialomucin that contains the ovarian cancer biomarker CA125, binds at low abundance to leucocytes via the immune receptor, Siglec-9. Conventional fluorescence-based imaging techniques lack the sensitivity to assess this low-abundance event, prompting us to develop a novel "digital" optical cytometry technique for qualitative and quantitative assessment of CA125 binding to peripheral blood mononuclear cells (PBMC). Plasmonic nanoparticle labeled detection antibody allows assessment of CA125 at the near-single molecule level when bound to specific immune cell lineages that are simultaneously identified using multiparameter fluorescence imaging. Image analysis and deep learning were used to quantify CA125 per each cell lineage. PBMC from treatment naïve ovarian cancer patients (N = 14) showed higher cell surface abundance of CA125 on the aggregate PBMC population as well as on NK (p = 0.013), T (p < 0.001) and B cells (p = 0.024) compared to circulating lymphocytes of healthy donors (N = 7). Differences in CA125 binding to monocytes or NK-T cells between the two cohorts were not significant. There was no correlation between the PBMC-bound and serum levels of CA125, suggesting that these two compartments are not in stoichiometric equilibrium. Understanding where and how subset-specific cell-bound surface CA125 takes place may provide guidance towards a new diagnostic biomarker in ovarian cancer.
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Affiliation(s)
- Germán González
- PNP Research Corporation, Drury, MA 01343, USA; (P.K.); (W.P.H.)
| | - Kornél Lakatos
- Brigham and Women’s Hospital, Department of Obstetrics, Gynecology and Reproductive Biology, Boston, MA 02115, USA; (K.L.); (D.W.C.)
| | - Jawad Hoballah
- Thorlabs Imaging Systems, Sterling, VA 20166, USA; (J.H.); (J.B.)
| | - Roberta Fritz-Klaus
- Department of Obstetrics and Gynecology, University of Wisconsin Madison, Madison, WI 53706, USA; (R.F.-K.); (L.A.-J.)
| | - Lojain Al-Johani
- Department of Obstetrics and Gynecology, University of Wisconsin Madison, Madison, WI 53706, USA; (R.F.-K.); (L.A.-J.)
| | - Jeff Brooker
- Thorlabs Imaging Systems, Sterling, VA 20166, USA; (J.H.); (J.B.)
| | - Sinyoung Jeong
- Massachusetts General Hospital, Wellman Center for Photomedicine, Boston, MA 02114, USA; (S.J.); (C.L.E.)
| | - Conor L. Evans
- Massachusetts General Hospital, Wellman Center for Photomedicine, Boston, MA 02114, USA; (S.J.); (C.L.E.)
| | - Petra Krauledat
- PNP Research Corporation, Drury, MA 01343, USA; (P.K.); (W.P.H.)
| | - Daniel W. Cramer
- Brigham and Women’s Hospital, Department of Obstetrics, Gynecology and Reproductive Biology, Boston, MA 02115, USA; (K.L.); (D.W.C.)
| | | | - W. Peter Hansen
- PNP Research Corporation, Drury, MA 01343, USA; (P.K.); (W.P.H.)
| | - Manish S. Patankar
- Department of Obstetrics and Gynecology, University of Wisconsin Madison, Madison, WI 53706, USA; (R.F.-K.); (L.A.-J.)
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Andes FT, Adam S, Hahn M, Aust O, Frey S, Grueneboom A, Nitschke L, Schett G, Steffen U. The human sialic acid-binding immunoglobulin-like lectin Siglec-9 and its murine homolog Siglec-E control osteoclast activity and bone resorption. Bone 2021; 143:115665. [PMID: 33007530 DOI: 10.1016/j.bone.2020.115665] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 09/23/2020] [Accepted: 09/23/2020] [Indexed: 02/08/2023]
Abstract
Regulation of osteoclast differentiation and function is a central element in bone homeostasis. While the role of soluble factors, such as cytokines, hormones and growth factors, in controlling osteoclast differentiation has been intensively characterized, the function of surface receptors is less well understood. Sialic acid-binding immunoglobulin-like lectin (Siglec)-9 and its murine homolog Siglec-E are sialic acid-recognizing inhibitory receptors from the CD33-related Siglec-family and mainly expressed on myeloid cells. We found Siglec-9 and Siglec-E to be expressed at all stages of human and murine osteoclastogenesis, respectively. Siglec-E knockout mice displayed lower bone mass despite unchanged osteoclast numbers and an increased bone formation rate. Ex vivo osteoclast assays using Siglec-E knockout cells or a blocking antibody against human Siglec-9 confirmed the suppressive effect of Siglec-9/Siglec-E on osteoclast function. Although osteoclast numbers were unchanged or even slightly decreased, the blockade/absence of Siglec-9/Siglec-E resulted in an augmented resorption activity of mature osteoclasts. This increased resorption activity was associated with enlarged actin rings. Together, our results suggest Siglec-9/Siglec-E to inhibit osteoclast activation independently from osteoclast differentiation and thereby propose a new mechanism for the control of local bone resorption.
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Affiliation(s)
- F T Andes
- Department of Internal Medicine 3, Friedrich-Alexander University Erlangen-Nürnberg and Universitätsklinikum Erlangen, Erlangen, Germany; Deutsches Zentrum für Immuntherapie (DZI), Erlangen, Germany
| | - S Adam
- Department of Internal Medicine 3, Friedrich-Alexander University Erlangen-Nürnberg and Universitätsklinikum Erlangen, Erlangen, Germany; Deutsches Zentrum für Immuntherapie (DZI), Erlangen, Germany
| | - M Hahn
- Department of Internal Medicine 3, Friedrich-Alexander University Erlangen-Nürnberg and Universitätsklinikum Erlangen, Erlangen, Germany; Deutsches Zentrum für Immuntherapie (DZI), Erlangen, Germany
| | - O Aust
- Department of Internal Medicine 3, Friedrich-Alexander University Erlangen-Nürnberg and Universitätsklinikum Erlangen, Erlangen, Germany; Deutsches Zentrum für Immuntherapie (DZI), Erlangen, Germany
| | - S Frey
- Department of Internal Medicine 3, Friedrich-Alexander University Erlangen-Nürnberg and Universitätsklinikum Erlangen, Erlangen, Germany; Deutsches Zentrum für Immuntherapie (DZI), Erlangen, Germany
| | - A Grueneboom
- Department of Internal Medicine 3, Friedrich-Alexander University Erlangen-Nürnberg and Universitätsklinikum Erlangen, Erlangen, Germany; Deutsches Zentrum für Immuntherapie (DZI), Erlangen, Germany
| | - L Nitschke
- Department of Genetics, Friedrich-Alexander University Erlangen-Nürnberg, Germany
| | - G Schett
- Department of Internal Medicine 3, Friedrich-Alexander University Erlangen-Nürnberg and Universitätsklinikum Erlangen, Erlangen, Germany; Deutsches Zentrum für Immuntherapie (DZI), Erlangen, Germany
| | - U Steffen
- Department of Internal Medicine 3, Friedrich-Alexander University Erlangen-Nürnberg and Universitätsklinikum Erlangen, Erlangen, Germany; Deutsches Zentrum für Immuntherapie (DZI), Erlangen, Germany.
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Kiser ZM, Lizcano A, Nguyen J, Becker GL, Belcher JD, Varki AP, Vercellotti GM. Decreased erythrocyte binding of Siglec-9 increases neutrophil activation in sickle cell disease. Blood Cells Mol Dis 2020; 81:102399. [PMID: 31901888 DOI: 10.1016/j.bcmd.2019.102399] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Revised: 12/19/2019] [Accepted: 12/19/2019] [Indexed: 01/29/2023]
Abstract
Oxidative stress and inflammation promote vaso-occlusion in sickle cell disease (SCD). CD33-related Sialic acid-binding immunoglobulin-type lectins (CD33rSiglecs) are cell surface proteins that recognize sialic acids inhibit innate immune cell functions. We have shown that Siglec-9 on human neutrophils interact with erythrocyte sialic acids (prominently glycophorin-A (GYPA) to suppress neutrophil reactive oxygen species (ROS). We hypothesized that altered sickle erythrocyte membrane sialic acid leads to decreased Siglec-9 binding capability, and thus a decreased neutrophil oxidative burst. SS erythrocytes express significantly more sialic acid than AA erythrocytes (p = 0.02). SS erythrocytes displayed significantly less Siglec-9-Fc binding 39% ± 11 (mean ± SEM) compared to AA erythrocytes 78% ± 5 (p = 0.009). Treatment of AA erythrocytes with sialidase to remove sialic acid decreased binding to 3% ± 7.9 (p ≤ 0.001). When freshly isolated neutrophils were incubated with AA erythrocytes, neutrophils achieved 16% ± 6 of the oxidative burst exhibited by a stimulated neutrophil without erythrocytes. In contrast, neutrophils incubated with SS erythrocytes achieved 47% ± 6 of the oxidative burst (AA versus SS, p = 0.03). Stimulated neutrophils incubated with AA erythrocytes showed minimal NET formation while with SS erythrocytes NETs increased. SS erythrocytes are deficient in binding to neutrophil Siglec-9 which may contribute to the increased oxidative stress in SCD.
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15
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Jødal L, Roivainen A, Oikonen V, Jalkanen S, Hansen SB, Afzelius P, Alstrup AKO, Nielsen OL, Jensen SB. Kinetic Modelling of [ 68Ga]Ga-DOTA- Siglec-9 in Porcine Osteomyelitis and Soft Tissue Infections. Molecules 2019; 24:molecules24224094. [PMID: 31766140 PMCID: PMC6891593 DOI: 10.3390/molecules24224094] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 11/07/2019] [Accepted: 11/10/2019] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND [68Ga]Ga-DOTA-Siglec-9 is a positron emission tomography (PET) radioligand for vascular adhesion protein 1 (VAP-1), a protein involved in leukocyte trafficking. The tracer facilitates the imaging of inflammation and infection. Here, we studied the pharmacokinetic modelling of [68Ga]Ga-DOTA-Siglec-9 in osteomyelitis and soft tissue infections in pigs. METHODS Eight pigs with osteomyelitis and soft tissue infections in the right hind limb were dynamically PET scanned for 60 min along with arterial blood sampling. The fraction of radioactivity in the blood accounted for by the parent tracer was evaluated with radio-high-performance liquid chromatography. One- and two-tissue compartment models were used for pharmacokinetic evaluation. Post-mortem soft tissue samples from one pig were analysed with anti-VAP-1 immunofluorescence. In each analysis, the animal's non-infected left hind limb was used as a control. RESULTS Tracer uptake was elevated in soft tissue infections but remained low in osteomyelitis. The kinetics of [68Ga]Ga-DOTA-Siglec-9 followed a reversible 2-tissue compartment model. The tracer metabolized quickly; however, taking this into account, produced more ambiguous results. Infected soft tissue samples showed endothelial cell surface expression of the Siglec-9 receptor VAP-1. CONCLUSION The kinetics of [68Ga]Ga-DOTA-Siglec-9 uptake in porcine soft tissue infections are best described by the 2-tissue compartment model.
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Affiliation(s)
- Lars Jødal
- Department of Nuclear Medicine, Aalborg University Hospital, DK-9000 Aalborg, Denmark;
- Correspondence: ; Tel.: +45-9766-5500
| | - Anne Roivainen
- Turku PET Centre, Turku University Hospital, FI-20520 Turku, Finland; (A.R.); (V.O.)
- Turku PET Centre, University of Turku, FI-20520 Turku, Finland
| | - Vesa Oikonen
- Turku PET Centre, Turku University Hospital, FI-20520 Turku, Finland; (A.R.); (V.O.)
- Turku PET Centre, University of Turku, FI-20520 Turku, Finland
| | - Sirpa Jalkanen
- MediCity Research Laboratory and Institute of Biomedicine, University of Turku, FI-20520 Turku, Finland;
| | - Søren B. Hansen
- Department of Nuclear Medicine and PET, Aarhus University Hospital, DK-8200 Aarhus, Denmark; (S.B.H.); (A.K.O.A.)
| | - Pia Afzelius
- North Zealand Hospital, Hillerød, Copenhagen University Hospital, DK-3400 Hillerød, Denmark;
| | - Aage K. O. Alstrup
- Department of Nuclear Medicine and PET, Aarhus University Hospital, DK-8200 Aarhus, Denmark; (S.B.H.); (A.K.O.A.)
| | - Ole L. Nielsen
- Department of Veterinary and Animal Sciences, University of Copenhagen, DK-1870 Copenhagen, Denmark;
| | - Svend B. Jensen
- Department of Nuclear Medicine, Aalborg University Hospital, DK-9000 Aalborg, Denmark;
- Department of Chemistry and Biosciences, Aalborg University, DK-9100 Aalborg, Denmark
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16
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Barriga V, Kuol N, Nurgali K, Apostolopoulos V. The Complex Interaction between the Tumor Micro-Environment and Immune Checkpoints in Breast Cancer. Cancers (Basel) 2019; 11:cancers11081205. [PMID: 31430935 PMCID: PMC6721629 DOI: 10.3390/cancers11081205] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2019] [Revised: 08/08/2019] [Accepted: 08/12/2019] [Indexed: 02/07/2023] Open
Abstract
The progression of breast cancer and its association with clinical outcome and treatment remain largely unexplored. Accumulating data has highlighted the interaction between cells of the immune system and the tumor microenvironment in cancer progression, and although studies have identified multiple facets of cancer progression within the development of the tumor microenvironment (TME) and its constituents, there is lack of research into the associations between breast cancer subtype and staging. Current literature has provided insight into the cells and pathways associated with breast cancer progression through expression analysis. However, there is lack of co-expression studies between immune pathways and cells of the TME that form pro-tumorigenic relationships contributing to immune-evasion. We focus on the immune checkpoint and TME elements that influence cancer progression, particularly studies in molecular subtypes of breast cancer.
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Affiliation(s)
- Vanessa Barriga
- College of Health and Biomedicine, Victoria University, Melbourne 3030, Australia
- Institute for Health and Sport, Victoria University, Melbourne 3030, Australia
| | - Nyanbol Kuol
- Institute for Health and Sport, Victoria University, Melbourne 3030, Australia
| | - Kulmira Nurgali
- Institute for Health and Sport, Victoria University, Melbourne 3030, Australia
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17
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Banerjee N, Mukhopadhyay S. Oxidative damage markers and inflammatory cytokines are altered in patients suffering with post-chikungunya persisting polyarthralgia. Free Radic Res 2018; 52:887-895. [PMID: 29898618 DOI: 10.1080/10715762.2018.1489131] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Abstract
Redox homoeostasis is necessary for the maintenance of living systems. Chikungunya viral infection manifests into joint inflammation and debilitating polyarthralgia affecting the life style of the patient badly. The disease pathophysiology is poorly understood and there is a lack of targeted therapeutics. The pathogenic role of free radicals in arthritis is well established. This study aims for the first time to evaluate the status of several standard oxidative stress markers and their correlation in chikungunya patients suffering with polyarthralgia. Expression of Siglec-9 on monocytes; which can modulate oxidative stress is studied along with intracellular reactive oxygen species (ROS), cellular lipid and protein damage markers in chikungunya patients with/without persisting polyarthralgia along with healthy controls. Furthermore, plasma NO level, antioxidant status was investigated along with some inflammatory cytokines namely IL-6, IFN-γ, CXCL-9, IL-10 and TGFβ1. Interestingly, all oxidative damage markers are altered significantly in groups but their alteration levels vary in patients with/without persisting polyarthralgia. Siglec-9 expression level is increased in patients revealing cellular response to manage oxidative stress with respect to controls. Correlation studies reveal that intracellular ROS correlates well with most of the studied parameters but the correlation coefficient (Pearson r) differs with disease manifestation demonstrating strong role of these factors in a pro-oxidant milieu. The presence of free radicals increases the availability of neoantigens continuously, which possibly further cascades oxidative damage and development of persisting polyarthralgia.
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Affiliation(s)
- Nilotpal Banerjee
- a Department of Laboratory Medicine , School of Tropical Medicine , Kolkata , India
| | - Sumi Mukhopadhyay
- a Department of Laboratory Medicine , School of Tropical Medicine , Kolkata , India
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18
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Zhao D, Jiang X, Xu Y, Yang H, Gao D, Li X, Gao L, Ma C, Liang X. Decreased Siglec-9 Expression on Natural Killer Cell Subset Associated With Persistent HBV Replication. Front Immunol 2018; 9:1124. [PMID: 29899741 PMCID: PMC5988867 DOI: 10.3389/fimmu.2018.01124] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2017] [Accepted: 05/03/2018] [Indexed: 12/23/2022] Open
Abstract
Siglec-9 is an MHC-independent inhibitory receptor selectively expressed on CD56dim NK cells. Its role in infection diseases has not been investigated yet. Here, we studied the potential regulatory roles of NK Siglec-9 in the pathogenesis of chronic hepatitis B (CHB) infection. Flow cytometry evaluated the expression of Siglec-9 and other receptors on peripheral NK cells. Immunofluorescence staining was used to detect Siglec-9 ligands on liver biopsy tissues and cultured hepatocyte cell lines. Siglec-9 blocking assay was carried out and cytokine synthesis and CD107a degranulation was detected by flow cytometry. Compared to healthy donors, CHB patients had decreased Siglec-9+ NK cells, which reversely correlated with serum hepatitis B e antigen and HBV DNA titer. Siglec-9 expression on NK cells from patients achieving sustained virological response recovered to the level of normal donors. Neutralization of Siglec-9 restored cytokine synthesis and degranulation of NK cells from CHB patients. Immunofluorescence staining showed increased expression of Siglec-9 ligands in liver biopsy tissues from CHB patients and in hepatocyte cell lines infected with HBV or stimulated with inflammatory cytokines (IL-6 or TGF-β). These findings identify Siglec-9 as a negative regulator for NK cells contributing to HBV persistence and the intervention of Siglec-9 signaling might be of potentially translational significance.
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Affiliation(s)
- Di Zhao
- Key Laboratory for Experimental Teratology of Ministry of Education, Key Laboratory of Infection and Immunity of Shandong Province and Department of Immunology, Shandong University School of Medicine, Jinan, China.,Department of Clinical Laboratory, Qilu Hospital of Shandong University, Jinan, China
| | - Xuemei Jiang
- Key Laboratory for Experimental Teratology of Ministry of Education, Key Laboratory of Infection and Immunity of Shandong Province and Department of Immunology, Shandong University School of Medicine, Jinan, China.,Department of Hepatic Diseases, Jinan Infectious Disease Hospital, Jinan, China
| | - Yong Xu
- Key Laboratory for Experimental Teratology of Ministry of Education, Key Laboratory of Infection and Immunity of Shandong Province and Department of Immunology, Shandong University School of Medicine, Jinan, China
| | - Huimin Yang
- Department of Nephrology, Qilu Hospital, Shandong University, Jinan, China
| | - Dongni Gao
- Key Laboratory for Experimental Teratology of Ministry of Education, Key Laboratory of Infection and Immunity of Shandong Province and Department of Immunology, Shandong University School of Medicine, Jinan, China
| | - Xueen Li
- Department of Neurosurgery, Qilu Hospital, Shandong University, Jinan, China
| | - Lifen Gao
- Key Laboratory for Experimental Teratology of Ministry of Education, Key Laboratory of Infection and Immunity of Shandong Province and Department of Immunology, Shandong University School of Medicine, Jinan, China
| | - Chunhong Ma
- Key Laboratory for Experimental Teratology of Ministry of Education, Key Laboratory of Infection and Immunity of Shandong Province and Department of Immunology, Shandong University School of Medicine, Jinan, China
| | - Xiaohong Liang
- Key Laboratory for Experimental Teratology of Ministry of Education, Key Laboratory of Infection and Immunity of Shandong Province and Department of Immunology, Shandong University School of Medicine, Jinan, China
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Moisio O, Siitonen R, Liljenbäck H, Suomela E, Jalkanen S, Li XG, Roivainen A. Exploring Alternative Radiolabeling Strategies for Sialic Acid-Binding Immunoglobulin-Like Lectin 9 Peptide: [ 68Ga]Ga- and [ 18F]AlF-NOTA- Siglec-9. Molecules 2018; 23:E305. [PMID: 29385091 DOI: 10.3390/molecules23020305] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Revised: 01/26/2018] [Accepted: 01/29/2018] [Indexed: 12/14/2022] Open
Abstract
Amino acid residues 283–297 from sialic acid-binding immunoglobulin-like lectin 9 (Siglec-9) form a cyclic peptide ligand targeting vascular adhesion protein-1 (VAP-1). VAP-1 is associated with the transfer of leukocytes from blood to tissues upon inflammation. Therefore, analogs of Siglec-9 peptide are good candidates for visualizing inflammation non-invasively using positron emission tomography (PET). Gallium-68-labeled 1,4,7,10-tetraazacyclododecane-N,N′,N″,N‴-tetraacetic acid (DOTA)-conjugated Siglec-9 has been evaluated extensively for this purpose. Here, we explored two alternative strategies for radiolabeling Siglec-9 peptide using a 1,4,7-triazacyclononane-triacetic acid (NOTA)-chelator to bind [68Ga]Ga or [18F]AlF. The radioligands were evaluated by in vivo PET imaging and ex vivo γ-counting of turpentine-induced sterile skin/muscle inflammation in Sprague-Dawley rats. Both tracers showed clear accumulation in the inflamed tissues. The whole-body biodistribution patterns of the tracers were similar.
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20
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Ono E, Uede T. Implication of Soluble Forms of Cell Adhesion Molecules in Infectious Disease and Tumor: Insights from Transgenic Animal Models. Int J Mol Sci 2018; 19:ijms19010239. [PMID: 29342882 PMCID: PMC5796187 DOI: 10.3390/ijms19010239] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2017] [Revised: 01/10/2018] [Accepted: 01/12/2018] [Indexed: 12/26/2022] Open
Abstract
Cell adhesion molecules (CAMs) are surface ligands, usually glycoproteins, which mediate cell-to-cell adhesion. They play a critical role in maintaining tissue integrity and mediating migration of cells, and some of them also act as viral receptors. It has been known that soluble forms of the viral receptors bind to the surface glycoproteins of the viruses and neutralize them, resulting in inhibition of the viral entry into cells. Nectin-1 is one of important CAMs belonging to immunoglobulin superfamily and herpesvirus entry mediator (HVEM) is a member of the tumor necrosis factor (TNF) receptor family. Both CAMs also act as alphaherpesvirus receptor. Transgenic mice expressing the soluble form of nectin-1 or HVEM showed almost complete resistance against the alphaherpesviruses. As another CAM, sialic acid-binding immunoglobulin-like lectins (Siglecs) that recognize sialic acids are also known as an immunoglobulin superfamily member. Siglecs play an important role in the regulation of immune cell functions in infectious diseases, inflammation, neurodegeneration, autoimmune diseases and cancer. Siglec-9 is one of Siglecs and capsular polysaccharide (CPS) of group B Streptococcus (GBS) binds to Siglec-9 on neutrophils, leading to suppress host immune response and provide a survival advantage to the pathogen. In addition, Siglec-9 also binds to tumor-produced mucins such as MUC1 to lead negative immunomodulation. Transgenic mice expressing the soluble form of Siglec-9 showed significant resistance against GBS infection and remarkable suppression of MUC1 expressing tumor proliferation. This review describes recent developments in the understanding of the potency of soluble forms of CAMs in the transgenic mice and discusses potential therapeutic interventions that may alter the outcomes of certain diseases.
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Affiliation(s)
- Etsuro Ono
- Department of Biomedicine, Center of Biomedical Research, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan.
| | - Toshimitsu Uede
- Division of Molecular Immunology, Institute for Genetic Medicine, Hokkaido University, Sapporo 060-0815, Japan.
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21
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Chen Z, Bai FF, Han L, Zhu J, Zheng T, Zhu Z, Zhou LF. Targeting Neutrophils in Severe Asthma via Siglec-9. Int Arch Allergy Immunol 2018; 175:5-15. [PMID: 29306942 DOI: 10.1159/000484873] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Accepted: 10/31/2017] [Indexed: 11/19/2022] Open
Abstract
Severe asthma comprises only 5% of patients with asthma, but the burden it brings to the social health system accounts for more than half of all asthmatics. Clinical evidence shows that severe asthma is often linked to the recruitment and activation of neutrophils in the airways. However, the underlying molecular and immunological mechanisms of neutrophilia in severe asthma are not clear and currently available drugs exert only limited effects on neutrophilic inflammation. Great efforts are underway to address the mystery of neutrophilic inflammation in chronic respiratory disorders. Sialic acid-binding immunoglobulin-like lectins (Siglecs) are members of the immunoglobulin gene family. Of note, Siglec-9 is uniquely expressed by human neutrophils and monocytes, as well as a minor population of natural killer cells. Engaging this structure with antibodies or glycan ligands results in programmed cell death in human neutrophils. Intriguingly, the administration of Siglec-E antibody abolished the recruitment of neutrophils in mouse models of neutrophilic pulmonary inflammation in vivo. Given that neutrophils are probably a major culprit in the generation and perpetuation of inflammation, targeting Siglec-9 could be beneficial for the treatment of severe asthma, chronic obstructive pulmonary disease, and related pulmonary disorders characteristic of neutrophilia.
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Affiliation(s)
- Zi Chen
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital, Nanjing Medical University, Nanjing, China
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22
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Siitonen R, Pietikäinen A, Liljenbäck H, Käkelä M, Söderström M, Jalkanen S, Hytönen J, Roivainen A. Targeting of vascular adhesion protein-1 by positron emission tomography visualizes sites of inflammation in Borrelia burgdorferi-infected mice. Arthritis Res Ther 2017; 19:254. [PMID: 29166944 PMCID: PMC5700622 DOI: 10.1186/s13075-017-1460-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Accepted: 10/26/2017] [Indexed: 12/13/2022] Open
Abstract
Background In the present study, we sought to evaluate the feasibility of targeting vascular adhesion protein-1 (VAP-1) by positron emission tomography (PET) for the longitudinal quantitative assessment of Borrelia burgdorferi infection-induced inflammation in mice. Methods Mice with B. burgdorferi infection-induced arthritis were studied. During a 7-week follow-up period, the progression of arthritis was monitored weekly with 68Ga-DOTA-Siglec-9 PET/computed tomography (CT) and measurement of tibiotarsal joint swellings. A subgroup of infected mice was treated with ceftriaxone. Finally, histopathological assessment of joint inflammation was performed and VAP-1 expression in joints were determined. Results Explicit joint swelling and 68Ga-DOTA-Siglec-9 uptake could be demonstrated in the affected joints from B. burgdorferi-infected mice. By contrast, no obvious accumulation of 68Ga-DOTA-Siglec-9 was detected in joints of uninfected mice. The maximum swelling and highest uptake in the affected joints were observed 4 weeks after the infection. 68Ga-DOTA-Siglec-9 uptake in joints correlated with joint swelling (P < 0.0001) and histopathological scoring of inflammation (P = 0.020). Despite short-term antibiotic treatment, the arthritis persisted, and the PET signal remained as high as in nontreated mice. Immunohistochemistry revealed strong-to-moderate expression of VAP-1 in the synovium of B. burgdorferi-infected mice, while only weak expression of VAP-1 was detected in uninfected mice. Conclusions The present study showed that 68Ga-DOTA-Siglec-9 can detect B. burgdorferi infection-induced arthritis in mice. Furthermore, longitudinal PET/CT imaging allowed monitoring of arthritis development over time.
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Affiliation(s)
- Riikka Siitonen
- Turku PET Centre, University of Turku, Kiinamyllynkatu 4-8, FI-20520, Turku, Finland
| | - Annukka Pietikäinen
- Institute of Biomedicine, University of Turku, Kiinamyllynkatu 10, FI-20520, Turku, Finland.,Turku Doctoral Programme for Molecular Medicine, Turku, Finland
| | - Heidi Liljenbäck
- Turku PET Centre, University of Turku, Kiinamyllynkatu 4-8, FI-20520, Turku, Finland.,Turku Center for Disease Modeling, University of Turku, Kiinamyllynkatu 10, FI-20520, Turku, Finland
| | - Meeri Käkelä
- Turku PET Centre, University of Turku, Kiinamyllynkatu 4-8, FI-20520, Turku, Finland
| | - Mirva Söderström
- Department of Pathology, Turku University Hospital, Kiinamyllynkatu 10, FI-20520, Turku, Finland
| | - Sirpa Jalkanen
- Institute of Biomedicine, University of Turku, Kiinamyllynkatu 10, FI-20520, Turku, Finland.,MediCity Research Laboratory, University of Turku, Tykistönkatu 6, FI-20520, Turku, Finland
| | - Jukka Hytönen
- Institute of Biomedicine, University of Turku, Kiinamyllynkatu 10, FI-20520, Turku, Finland.,Microbiology and Genetics Department, Turku University Hospital, Kiinamyllynkatu 10, FI-20520, Turku, Finland
| | - Anne Roivainen
- Turku PET Centre, University of Turku, Kiinamyllynkatu 4-8, FI-20520, Turku, Finland. .,Turku Center for Disease Modeling, University of Turku, Kiinamyllynkatu 10, FI-20520, Turku, Finland. .,Turku PET Centre, Turku University Hospital, Kiinamyllynkatu 4-8, FI-20520, Turku, Finland.
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23
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Kuol N, Stojanovska L, Nurgali K, Apostolopoulos V. The mechanisms tumor cells utilize to evade the host's immune system. Maturitas 2017; 105:8-15. [PMID: 28477990 DOI: 10.1016/j.maturitas.2017.04.014] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2017] [Accepted: 04/18/2017] [Indexed: 02/06/2023]
Abstract
The immune system plays an essential role in the tumor progression; not only can it inhibit tumor growth but it can also promote tumor growth by establishing a favorable environment. Tumor cells utilize several strategies to evade the host's immune system, including expression of immunosuppressive molecules such as PD-L1, IDO and siglec-9. In addition, tumor cells not only regulate the recruitment and development of immunosuppressive forces to influence the tumor microenvironment but also shift the phenotype and function of normal immune cells from a possibly anti-tumor state to a pro-tumor state. As a result, tumor cells evade the host's immune system, leading to metastasis and/or recurrent disease.
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Affiliation(s)
- Nyanbol Kuol
- Centre for Chronic Disease, College of Health and Biomedicine, Victoria University, P.O. Box 14426, Melbourne, VIC 8001, Australia
| | - Lily Stojanovska
- Centre for Chronic Disease, College of Health and Biomedicine, Victoria University, P.O. Box 14426, Melbourne, VIC 8001, Australia
| | - Kulmira Nurgali
- Centre for Chronic Disease, College of Health and Biomedicine, Victoria University, P.O. Box 14426, Melbourne, VIC 8001, Australia
| | - Vasso Apostolopoulos
- Centre for Chronic Disease, College of Health and Biomedicine, Victoria University, P.O. Box 14426, Melbourne, VIC 8001, Australia.
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24
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Chu S, Zhu X, You N, Zhang W, Zheng F, Cai B, Zhou T, Wang Y, Sun Q, Yang Z, Zhang X, Wang C, Nie S, Zhu J, Wang M. The Fab Fragment of a Human Anti- Siglec-9 Monoclonal Antibody Suppresses LPS-Induced Inflammatory Responses in Human Macrophages. Front Immunol 2016; 7:649. [PMID: 28082984 PMCID: PMC5183739 DOI: 10.3389/fimmu.2016.00649] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Accepted: 12/14/2016] [Indexed: 01/22/2023] Open
Abstract
Sepsis is a major cause of death for hospitalized patients and is characterized by massive overreaction of immune responses to invading pathogens which is mediated by cytokines. For decades, there has been no effective treatment for sepsis. Sialic acid-binding, Ig-like lectin-9 (Siglec-9), is an immunomodulatory receptor expressed primarily on hematopoietic cells which is involved in various aspects of inflammatory responses and is a potential target for treatment of sepsis. The aim of the present study was to develop a human anti-Siglec-9 Fab fragment, which was named hS9-Fab03 and investigate its immune activity in human macrophages. We began by constructing the hS9-Fab03 prokaryotic expression vector from human antibody library and phage display. Then, we utilized a multitude of assays, including SDS-PAGE, Western blotting, ELISA, affinity, and kinetics assay to evaluate the binding affinity and specificity of hS9-Fab03. Results demonstrated that hS9-Fab03 specifically bind to Siglec-9 antigen with high affinity, and pretreatment with hS9-Fab03 could attenuate lipopolysaccharide (LPS)-induced TNF-α, IL-6, IL-1β, IL-8, and IFN-β production in human PBMC-derived macrophages, but slightly increased IL-10 production in an early time point. We also observed similar results in human THP-1-differentiated macrophages. Collectively, we prepared the hS9-Fab03 with efficient activity for blocking LPS-induced pro-inflammatory cytokines production in human macrophages. These results indicated that ligation of Siglec-9 with hS9-Fab03 might be a novel anti-inflammatory therapeutic strategy for sepsis.
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Affiliation(s)
- Sasa Chu
- Department of Infectious Disease, Anhui Medical University Affiliated with Bayi Clinical College, Hefei, China; Institute of Liver Disease, Nanjing Jingdu Hospital, Nanjing, China
| | - Xuhui Zhu
- Huadong Medical Institute of Biotechniques, Nanjing, China; Department of Emergency Medicine, Jinling Hospital, Medical School of Nanjing University, Nanjing, China
| | - Na You
- Department of Infectious Disease, Anhui Medical University Affiliated with Bayi Clinical College, Hefei, China; Institute of Liver Disease, Nanjing Jingdu Hospital, Nanjing, China
| | - Wei Zhang
- Department of Emergency Medicine, Jinling Hospital, Medical School of Nanjing University , Nanjing , China
| | - Feng Zheng
- Huadong Medical Institute of Biotechniques , Nanjing , China
| | - Binggang Cai
- Institute of Liver Disease, Nanjing Jingdu Hospital , Nanjing , China
| | - Tingting Zhou
- Huadong Medical Institute of Biotechniques , Nanjing , China
| | - Yiwen Wang
- Huadong Medical Institute of Biotechniques , Nanjing , China
| | - Qiannan Sun
- Department of Traditional Chinese Pharmacology, Chinese Pharmaceutical University , Nanjing , China
| | - Zhiguo Yang
- Institute of Liver Disease, Nanjing Jingdu Hospital , Nanjing , China
| | - Xin Zhang
- Institute of Liver Disease, Nanjing Jingdu Hospital , Nanjing , China
| | - Changjun Wang
- Huadong Medical Institute of Biotechniques , Nanjing , China
| | - Shinan Nie
- Department of Emergency Medicine, Jinling Hospital, Medical School of Nanjing University , Nanjing , China
| | - Jin Zhu
- Huadong Medical Institute of Biotechniques, Nanjing, China; Department of Pathology, Key Laboratory of Antibody Technique of the Ministry of Health, NJMU, Nanjing, China
| | - Maorong Wang
- Department of Infectious Disease, Anhui Medical University Affiliated with Bayi Clinical College, Hefei, China; Institute of Liver Disease, Nanjing Jingdu Hospital, Nanjing, China
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Siddiqui S, Schwarz F, Springer S, Khedri Z, Yu H, Deng L, Verhagen A, Naito-Matsui Y, Jiang W, Kim D, Zhou J, Ding B, Chen X, Varki N, Varki A. Studies on the Detection, Expression, Glycosylation, Dimerization, and Ligand Binding Properties of Mouse Siglec-E. J Biol Chem 2016; 292:1029-1037. [PMID: 27920204 DOI: 10.1074/jbc.m116.738351] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2016] [Revised: 12/02/2016] [Indexed: 12/20/2022] Open
Abstract
CD33-related Siglecs are a family of proteins widely expressed on innate immune cells. Binding of sialylated glycans or other ligands triggers signals that inhibit or activate inflammation. Immunomodulation by Siglecs has been extensively studied, but relationships between structure and functions are poorly explored. Here we present new data relating to the structure and function of Siglec-E, the major CD33-related Siglec expressed on mouse neutrophils, monocytes, macrophages, and dendritic cells. We generated nine new rat monoclonal antibodies specific to mouse Siglec-E, with no cross-reactivity to Siglec-F. Although all antibodies detected Siglec-E on transfected human HEK-293T cells, only two reacted with mouse bone marrow neutrophils by flow cytometry and on spleen sections by immunohistochemistry. Moreover, whereas all antibodies recognized Siglec-E-Fc on immunoblots, binding was dependent on intact disulfide bonds and N-glycans, and only two antibodies recognized native Siglec-E within spleen lysates. Thus, we further investigated the impact of Siglec-E homodimerization. Homology-based structural modeling predicted a cysteine residue (Cys-298) in position to form a disulfide bridge between two Siglec-E polypeptides. Mutagenesis of Cys-298 confirmed its role in dimerization. In keeping with the high level of 9-O-acetylation found in mice, sialoglycan array studies indicate that this modification has complex effects on recognition by Siglec-E, in relationship to the underlying structures. However, we found no differences in phosphorylation or SHP-1 recruitment between dimeric and monomeric Siglec-E expressed on HEK293A cells. Phylogenomic analyses predicted that only some human and mouse Siglecs form disulfide-linked dimers. Notably, Siglec-9, the functionally equivalent human paralog of Siglec-E, occurs as a monomer.
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Affiliation(s)
- Shoib Siddiqui
- From the Departments of Medicine and Cellular & Molecular Medicine, Glycobiology Research and Training Center (GRTC), University of California San Diego, La Jolla, California 92093-0687
| | - Flavio Schwarz
- From the Departments of Medicine and Cellular & Molecular Medicine, Glycobiology Research and Training Center (GRTC), University of California San Diego, La Jolla, California 92093-0687
| | - Stevan Springer
- From the Departments of Medicine and Cellular & Molecular Medicine, Glycobiology Research and Training Center (GRTC), University of California San Diego, La Jolla, California 92093-0687
| | - Zahra Khedri
- From the Departments of Medicine and Cellular & Molecular Medicine, Glycobiology Research and Training Center (GRTC), University of California San Diego, La Jolla, California 92093-0687
| | - Hai Yu
- the Department of Chemistry, University of California, Davis, California 95616, and
| | - Lingquan Deng
- From the Departments of Medicine and Cellular & Molecular Medicine, Glycobiology Research and Training Center (GRTC), University of California San Diego, La Jolla, California 92093-0687
| | - Andrea Verhagen
- From the Departments of Medicine and Cellular & Molecular Medicine, Glycobiology Research and Training Center (GRTC), University of California San Diego, La Jolla, California 92093-0687
| | - Yuko Naito-Matsui
- From the Departments of Medicine and Cellular & Molecular Medicine, Glycobiology Research and Training Center (GRTC), University of California San Diego, La Jolla, California 92093-0687
| | | | - Daniel Kim
- BioLegend, Inc., San Diego, California 92121
| | - Jie Zhou
- BioLegend, Inc., San Diego, California 92121
| | - Beibei Ding
- BioLegend, Inc., San Diego, California 92121
| | - Xi Chen
- the Department of Chemistry, University of California, Davis, California 95616, and
| | - Nissi Varki
- From the Departments of Medicine and Cellular & Molecular Medicine, Glycobiology Research and Training Center (GRTC), University of California San Diego, La Jolla, California 92093-0687
| | - Ajit Varki
- From the Departments of Medicine and Cellular & Molecular Medicine, Glycobiology Research and Training Center (GRTC), University of California San Diego, La Jolla, California 92093-0687,
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Matsumoto T, Takahashi N, Kojima T, Yoshioka Y, Ishikawa J, Furukawa K, Ono K, Sawada M, Ishiguro N, Yamamoto A. Soluble Siglec-9 suppresses arthritis in a collagen-induced arthritis mouse model and inhibits M1 activation of RAW264.7 macrophages. Arthritis Res Ther 2016; 18:133. [PMID: 27267914 PMCID: PMC4897938 DOI: 10.1186/s13075-016-1035-9] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Accepted: 05/27/2016] [Indexed: 11/10/2022] Open
Abstract
Background The aim of this study was to assess the effects of soluble sialic acid-binding immunoglobulin-type lectin (sSiglec)-9 on joint inflammation and destruction in a murine collagen-induced arthritis (CIA) model and in monolayer cultures of murine macrophages (RAW264.7 cells and peritoneal macrophages) and fibroblast-like synoviocytes (FLS) derived from patients with rheumatoid arthritis. Methods DBA/1J mice were immunized with type II collagen. Effects of sSiglec-9 were evaluated using a physiologic arthritis score, histological analysis, serum tumor necrosis factor (TNF)-α concentration, and the proportion of forkhead box P3 (Foxp3)-positive regulatory T (Treg) cells. In vivo biofluorescence imaging was used to assess the distribution of sSiglec-9. Levels of M1 (TNF-α, interleukin [IL]-6, and inducible nitric oxide synthase) and M2 (CD206, Arginase-1, and IL-10) macrophage markers and phosphorylation of intracellular signaling molecules were examined in macrophages, and levels of matrix metalloproteinase (MMP)-1, MMP-3, and MMP-13 were examined in FLS. Results sSiglec-9 significantly suppressed the clinical and histological incidence and severity of arthritis. The proportion of Foxp3-positive Treg cells significantly improved and serum TNF-α concentration decreased in vivo. Although sSiglec-9 reduced the expression of M1 markers in macrophages, it did not affect the expression of M2 markers and MMPs in FLS. Nuclear factor (NF)-kB p65 phosphorylation was attenuated by sSiglec-9, and chemical blockade of the NF-kB pathway reduced M1 marker expression in RAW264.7 cells. Conclusions In this study, we have demonstrated the therapeutic effects of sSiglec-9 in a murine CIA model. The mechanism underlying these effects involves the suppression of M1 proinflammatory macrophages by inhibiting the NF-kB pathway. sSiglec-9 may provide a novel therapeutic option for patients with rheumatoid arthritis refractory to currently available drugs.
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Affiliation(s)
- Takuya Matsumoto
- Department of Orthopedic Surgery and Rheumatology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Aichi, 466-8550, Japan
| | - Nobunori Takahashi
- Department of Orthopedic Surgery and Rheumatology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Aichi, 466-8550, Japan.
| | - Toshihisa Kojima
- Department of Orthopedic Surgery and Rheumatology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Aichi, 466-8550, Japan
| | - Yutaka Yoshioka
- Department of Orthopedic Surgery and Rheumatology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Aichi, 466-8550, Japan
| | - Jun Ishikawa
- Department of Oral and Maxillofacial Surgery/Protective Care for Masticatory Disorders, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Aichi, 466-8550, Japan
| | - Koichi Furukawa
- Department of Biochemistry II, Nagoya University Graduate School of Medicine, Nagoya, 466-0065, Japan
| | - Kenji Ono
- Research Institute of Environmental Medicine, Nagoya University, Nagoya, 464-8601, Japan
| | - Makoto Sawada
- Research Institute of Environmental Medicine, Nagoya University, Nagoya, 464-8601, Japan
| | - Naoki Ishiguro
- Department of Orthopedic Surgery and Rheumatology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Aichi, 466-8550, Japan
| | - Akihito Yamamoto
- Department of Oral and Maxillofacial Surgery/Protective Care for Masticatory Disorders, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Aichi, 466-8550, Japan
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Retamal J, Sörensen J, Lubberink M, Suarez-Sipmann F, Borges JB, Feinstein R, Jalkanen S, Antoni G, Hedenstierna G, Roivainen A, Larsson A, Velikyan I. Feasibility of (68)Ga-labeled Siglec-9 peptide for the imaging of acute lung inflammation: a pilot study in a porcine model of acute respiratory distress syndrome. Am J Nucl Med Mol Imaging 2016; 6:18-31. [PMID: 27069763 PMCID: PMC4749502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 10/05/2015] [Accepted: 12/04/2015] [Indexed: 06/05/2023]
Abstract
There is an unmet need for noninvasive, specific and quantitative imaging of inherent inflammatory activity. Vascular adhesion protein-1 (VAP-1) translocates to the luminal surface of endothelial cells upon inflammatory challenge. We hypothesized that in a porcine model of acute respiratory distress syndrome (ARDS), positron emission tomography (PET) with sialic acid-binding immunoglobulin-like lectin 9 (Siglec-9) based imaging agent targeting VAP-1 would allow quantification of regional pulmonary inflammation. ARDS was induced by lung lavages and injurious mechanical ventilation. Hemodynamics, respiratory system compliance (Crs) and blood gases were monitored. Dynamic examination using [(15)O]water PET-CT (10 min) was followed by dynamic (90 min) and whole-body examination using VAP-1 targeting (68)Ga-labeled 1,4,7,10-tetraaza cyclododecane-1,4,7-tris-acetic acid-10-ethylene glycol-conjugated Siglec-9 motif peptide ([(68)Ga]Ga-DOTA-Siglec-9). The animals received an anti-VAP-1 antibody for post-mortem immunohistochemistry assay of VAP-1 receptors. Tissue samples were collected post-mortem for the radioactivity uptake, histology and immunohistochemistry assessment. Marked reduction of oxygenation and Crs, and higher degree of inflammation were observed in ARDS animals. [(68)Ga]Ga-DOTA-Siglec-9 PET showed significant uptake in lungs, kidneys and urinary bladder. Normalization of the net uptake rate (Ki) for the tissue perfusion resulted in 4-fold higher uptake rate of [(68)Ga]Ga-DOTA-Siglec-9 in the ARDS lungs. Immunohistochemistry showed positive VAP-1 signal in the injured lungs. Detection of pulmonary inflammation associated with a porcine model of ARDS was possible with [(68)Ga]Ga-DOTA-Siglec-9 PET when using kinetic modeling and normalization for tissue perfusion.
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Affiliation(s)
- Jaime Retamal
- Department of Surgical Sciences, Hedenstierna laboratory, Uppsala UniversityUppsala, Sweden
- Departament de Medicina Intensiva, Pontificia Universidad Católica de ChileSantiago, Chile
| | - Jens Sörensen
- Department of Surgical Sciences, Section of Nuclear Medicine and PET, Uppsala UniversityUppsala, Sweden
| | - Mark Lubberink
- Department of Surgical Sciences, Section of Nuclear Medicine and PET, Uppsala UniversityUppsala, Sweden
| | - Fernando Suarez-Sipmann
- Department of Surgical Sciences, Hedenstierna laboratory, Uppsala UniversityUppsala, Sweden
- CIBER de Enfermedades Respiratorias, Instituto de Salud Carlos IIIMadrid, Spain
| | - João Batista Borges
- Department of Surgical Sciences, Hedenstierna laboratory, Uppsala UniversityUppsala, Sweden
- Pulmonary Divison, Heart Institute (Incor) Hospital das Clínicas da Faculdade de Medicina da Universidade de São PauloBrazil
| | | | - Sirpa Jalkanen
- MediCity Research Laboratory, Department of Medical Microbiology and Immunology, University of TurkuTurku, Finland
| | - Gunnar Antoni
- Department of Medicinal Chemistry, Uppsala UniversityUppsala, Sweden
| | - Göran Hedenstierna
- Department of Surgical Sciences, Hedenstierna laboratory, Uppsala UniversityUppsala, Sweden
| | - Anne Roivainen
- Turku PET Centre, University of Turku and Turku University HospitalTurku, Finland
- Turku Center for Disease Modelling, University of TurkuFurku, Finland
| | - Anders Larsson
- Department of Surgical Sciences, Hedenstierna laboratory, Uppsala UniversityUppsala, Sweden
| | - Irina Velikyan
- Department of Surgical Sciences, Section of Nuclear Medicine and PET, Uppsala UniversityUppsala, Sweden
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Matsubara K, Matsushita Y, Sakai K, Kano F, Kondo M, Noda M, Hashimoto N, Imagama S, Ishiguro N, Suzumura A, Ueda M, Furukawa K, Yamamoto A. Secreted ectodomain of sialic acid-binding Ig-like lectin-9 and monocyte chemoattractant protein-1 promote recovery after rat spinal cord injury by altering macrophage polarity. J Neurosci 2015; 35:2452-64. [PMID: 25673840 DOI: 10.1523/JNEUROSCI.4088-14.2015] [Citation(s) in RCA: 107] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Engrafted mesenchymal stem cells from human deciduous dental pulp (SHEDs) support recovery from neural insults via paracrine mechanisms that are poorly understood. Here we show that the conditioned serum-free medium (CM) from SHEDs, administered intrathecally into rat injured spinal cord during the acute postinjury period, caused remarkable functional recovery. The ability of SHED-CM to induce recovery was associated with an immunoregulatory activity that induced anti-inflammatory M2-like macrophages. Secretome analysis of the SHED-CM revealed a previously unrecognized set of inducers for anti-inflammatory M2-like macrophages: monocyte chemoattractant protein-1 (MCP-1) and the secreted ectodomain of sialic acid-binding Ig-like lectin-9 (ED-Siglec-9). Depleting MCP-1 and ED-Siglec-9 from the SHED-CM prominently reduced its ability to induce M2-like macrophages and to promote functional recovery after spinal cord injury (SCI). The combination of MCP-1 and ED-Siglec-9 synergistically promoted the M2-like differentiation of bone marrow-derived macrophages in vitro, and this effect was abolished by a selective antagonist for CC chemokine receptor 2 (CCR2) or by the genetic knock-out of CCR2. Furthermore, MCP-1 and ED-Siglec-9 administration into the injured spinal cord induced M2-like macrophages and led to a marked recovery of hindlimb locomotor function after SCI. The inhibition of this M2 induction through the inactivation of CCR2 function abolished the therapeutic effects of both SHED-CM and MCP-1/ED-Siglec-9. Macrophages activated by MCP-1 and ED-Siglec-9 extended neurite and suppressed apoptosis of primary cerebellar granule neurons against the neurotoxic effects of chondroitin sulfate proteoglycans. Our data suggest that the unique combination of MCP-1 and ED-Siglec-9 repairs the SCI through anti-inflammatory M2-like macrophage induction.
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