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Wu F, Pang H, Li F, Hua M, Song C, Tang J. Progress in cancer research on the regulator of phagocytosis CD47, which determines the fate of tumor cells (Review). Oncol Lett 2024; 27:256. [PMID: 38646501 PMCID: PMC11027102 DOI: 10.3892/ol.2024.14389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Accepted: 03/21/2024] [Indexed: 04/23/2024] Open
Abstract
Cluster of differentiation 47 (CD47) is a transmembrane protein that is widely and moderately expressed on the surface of various cells and can have an essential role in mediating cell proliferation, migration, phagocytosis, apoptosis, immune homeostasis and other related responses by binding to its ligands, integrins, thrombospondin-1 and signal regulatory protein α. The poor prognosis of cancer patients is closely associated with high expression of CD47 in glioblastoma, ovarian cancer, breast cancer, bladder cancer, colon cancer and hepatocellular carcinoma. Upregulation of CD47 expression facilitates the growth of numerous types of tumor cells, while downregulation of its expression promotes phagocytosis of tumor cells by macrophages, thereby limiting tumor growth. In addition, blocking CD47 activates the cyclic GMP-AMP (cGAMP) synthase/cGAMP/interferon gene stimulating factor signaling pathway and initiates an adaptive immune response that kills tumor cells. The present review describes the structure, function and interactions of CD47 with its ligands, as well as its regulation of phagocytosis and tumor cell fate. It summarizes the therapeutics, mechanisms of action, research advances and challenges of targeting CD47. In addition, this paper provides an overview of the latest therapeutic options for targeting CD47, such as chimeric antigen receptor (CAR) T-cells, CAR macrophages and nanotechnology-based delivery systems, which are essential for future clinical research on targeting CD47.
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Affiliation(s)
- Fan Wu
- Anhui Province Key Laboratory of Immunology in Chronic Diseases, Department of Immunology, School of Laboratory Medicine, Bengbu Medical College, Bengbu, Anhui 233030, P.R. China
| | - Hongyuan Pang
- Anhui Province Key Laboratory of Immunology in Chronic Diseases, Department of Immunology, School of Laboratory Medicine, Bengbu Medical College, Bengbu, Anhui 233030, P.R. China
| | - Fan Li
- Anhui Province Key Laboratory of Immunology in Chronic Diseases, Department of Immunology, School of Laboratory Medicine, Bengbu Medical College, Bengbu, Anhui 233030, P.R. China
| | - Mengqing Hua
- Anhui Province Key Laboratory of Immunology in Chronic Diseases, Department of Immunology, School of Laboratory Medicine, Bengbu Medical College, Bengbu, Anhui 233030, P.R. China
| | - Chuanwang Song
- Anhui Province Key Laboratory of Immunology in Chronic Diseases, Department of Immunology, School of Laboratory Medicine, Bengbu Medical College, Bengbu, Anhui 233030, P.R. China
| | - Jie Tang
- Anhui Province Key Laboratory of Immunology in Chronic Diseases, Department of Immunology, School of Laboratory Medicine, Bengbu Medical College, Bengbu, Anhui 233030, P.R. China
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2
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Ye ZH, Yu WB, Huang MY, Chen J, Lu JJ. Building on the backbone of CD47-based therapy in cancer: Combination strategies, mechanisms, and future perspectives. Acta Pharm Sin B 2023; 13:1467-1487. [PMID: 37139405 PMCID: PMC10149906 DOI: 10.1016/j.apsb.2022.12.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 10/10/2022] [Accepted: 11/18/2022] [Indexed: 12/27/2022] Open
Abstract
Described as a "don't eat me" signal, CD47 becomes a vital immune checkpoint in cancer. Its interaction with signal regulatory protein alpha (SIRPα) prevents macrophage phagocytosis. In recent years, a growing body of evidences have unveiled that CD47-based combination therapy exhibits a superior anti-cancer effect. Latest clinical trials about CD47 have adopted the regimen of collaborating with other therapies or developing CD47-directed bispecific antibodies, indicating the combination strategy as a general trend of the future. In this review, clinical and preclinical cases about the current combination strategies targeting CD47 are collected, their underlying mechanisms of action are discussed, and ideas from future perspectives are shared.
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Affiliation(s)
- Zi-Han Ye
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao 999078, China
| | - Wei-Bang Yu
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao 999078, China
| | - Mu-Yang Huang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao 999078, China
| | - Jun Chen
- Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080, China
| | - Jin-Jian Lu
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao 999078, China
- Department of Pharmaceutical Sciences, Faculty of Health Sciences, University of Macau, Macao 999078, China
- MoE Frontiers Science Center for Precision Oncology, University of Macau, Macao 999078, China
- Guangdong-Hong Kong-Macau Joint Lab on Chinese Medicine and Immune Disease Research, University of Macau, Macao 999078, China
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3
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van Duijn A, Van der Burg SH, Scheeren FA. CD47/SIRPα axis: bridging innate and adaptive immunity. J Immunother Cancer 2022; 10:jitc-2022-004589. [PMID: 35831032 PMCID: PMC9280883 DOI: 10.1136/jitc-2022-004589] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/09/2022] [Indexed: 11/29/2022] Open
Abstract
Myeloid immune cells are frequently present in the tumor environment, and although they can positively contribute to tumor control they often negatively impact anticancer immune responses. One way of inhibiting the positive contributions of myeloid cells is by signaling through the cluster of differentiation 47 (CD47)/signal regulatory protein alpha (SIRPα) axis. The SIRPα receptor is expressed on myeloid cells and is an inhibitory immune receptor that, upon binding to CD47 protein, delivers a ‘don’t eat me’ signal. As CD47 is often overexpressed on cancer cells, treatments targeting CD47/SIRPα have been under active investigation and are currently being tested in clinical settings. Interestingly, the CD47/SIRPα axis is also involved in T cell-mediated antitumor responses. In this perspective we provide an overview of recent studies showing how therapeutic blockade of the CD47/SIRPα axis improves the adaptive immune response. Furthermore, we discuss the interconnection between the myeloid CD47/SIRPα axis and adaptive T cell responses as well as the potential therapeutic role of the CD47/SIRPα axis in tumors with acquired resistance to the classic immunotherapy through major histocompatibility complex downregulation. Altogether this review provides a profound insight for the optimal exploitation of CD47/SIRPα immune checkpoint therapy.
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Affiliation(s)
- Anneloes van Duijn
- Department of Medical Oncology, Leiden University Medical Center, Leiden, The Netherlands.,Department of Dermatology, Leiden University Medical Center, Leiden, The Netherlands
| | - Sjoerd H Van der Burg
- Department of Medical Oncology, Oncode Institute, Leiden University Medical Center, Leiden, The Netherlands
| | - Ferenc A Scheeren
- Department of Dermatology, Leiden University Medical Center, Leiden, The Netherlands
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4
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Ren B, Xia H, Liao Y, Zhou H, Wang Z, Shi Y, Zhu M. Endothelial SIRPα signaling controls VE-cadherin endocytosis for thymic homing of progenitor cells. eLife 2022; 11:69219. [PMID: 35511221 PMCID: PMC9071265 DOI: 10.7554/elife.69219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Accepted: 04/19/2022] [Indexed: 11/13/2022] Open
Abstract
Thymic homing of hematopoietic progenitor cells (HPCs) is tightly regulated for proper T cell development. Previously we have identified a subset of specialized thymic portal endothelial cells (TPECs), which is important for thymic HPC homing. However, the underlying molecular mechanism still remains unknown. Here, we found that signal regulatory protein alpha (SIRPα) is preferentially expressed on TPECs. Disruption of CD47-SIRPα signaling in mice resulted in reduced number of thymic early T cell progenitors (ETPs), impaired thymic HPC homing, and altered early development of thymocytes. Mechanistically, Sirpa-deficient ECs and Cd47-deficient bone marrow progenitor cells or T lymphocytes demonstrated impaired transendothelial migration (TEM). Specifically, SIRPα intracellular ITIM motif-initiated downstream signaling in ECs was found to be required for TEM in an SHP2- and Src-dependent manner. Furthermore, CD47 signaling from migrating cells and SIRPα intracellular signaling were found to be required for VE-cadherin endocytosis in ECs. Thus, our study reveals a novel role of endothelial SIRPα signaling for thymic HPC homing for T cell development.
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Affiliation(s)
- Boyang Ren
- The Key Laboratory of Infection and Immunity, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China.,College of Life Sciences, University of the Chinese Academy of Sciences, Beijing, China
| | - Huan Xia
- The Key Laboratory of Infection and Immunity, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China.,College of Life Sciences, University of the Chinese Academy of Sciences, Beijing, China
| | - Yijun Liao
- The Key Laboratory of Infection and Immunity, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China.,College of Life Sciences, University of the Chinese Academy of Sciences, Beijing, China
| | - Hang Zhou
- The Key Laboratory of Infection and Immunity, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China.,College of Life Sciences, University of the Chinese Academy of Sciences, Beijing, China
| | - Zhongnan Wang
- The Key Laboratory of Infection and Immunity, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Yaoyao Shi
- The Key Laboratory of Infection and Immunity, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Mingzhao Zhu
- The Key Laboratory of Infection and Immunity, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China.,College of Life Sciences, University of the Chinese Academy of Sciences, Beijing, China
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5
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The Role of Type-2 Conventional Dendritic Cells in the Regulation of Tumor Immunity. Cancers (Basel) 2022; 14:cancers14081976. [PMID: 35454882 PMCID: PMC9028336 DOI: 10.3390/cancers14081976] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 04/01/2022] [Accepted: 04/11/2022] [Indexed: 12/19/2022] Open
Abstract
Simple Summary Recent studies revealed that type-2 conventional dendritic cells (cDC2s) play an important role in antitumor immunity by promoting cytotoxic T-cell responses and helper T-cell differentiation. This review outlines the role of cDC2s in tumor immunity and summarizes the latest progress regarding their potential in cancer vaccination and cDC2-targeted cancer immunotherapy. Abstract Conventional dendritic cells (cDCs) orchestrate immune responses to cancer and comprise two major subsets: type-1 cDCs (cDC1s) and type-2 cDCs (cDC2s). Compared with cDC1s, which are dedicated to the activation of CD8+ T cells, cDC2s are ontogenically and functionally heterogeneous, with their main function being the presentation of exogenous antigens to CD4+ T cells for the initiation of T helper cell differentiation. cDC1s play an important role in tumor-specific immune responses through cross-presentation of tumor-derived antigens for the priming of CD8+ T cells, whereas little is known of the role of cDC2s in tumor immunity. Recent studies have indicated that human cDC2s can be divided into at least two subsets and have implicated these cells in both anti- and pro-tumoral immune responses. Furthermore, the efficacy of cDC2-based vaccines as well as cDC2-targeted therapeutics has been demonstrated in both mouse models and human patients. Here we summarize current knowledge about the role of cDC2s in tumor immunity and address whether these cells are beneficial in the context of antitumor immune responses.
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6
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Liu D, Duan L, Cyster JG. Chemo- and mechanosensing by dendritic cells facilitate antigen surveillance in the spleen. Immunol Rev 2022; 306:25-42. [PMID: 35147233 PMCID: PMC8852366 DOI: 10.1111/imr.13055] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Accepted: 12/05/2021] [Indexed: 12/30/2022]
Abstract
Spleen dendritic cells (DC) are critical for initiation of adaptive immune responses against blood-borne invaders. Key to DC function is their positioning at sites of pathogen entry, and their abilities to selectively capture foreign antigens and promptly engage T cells. Focusing on conventional DC2 (cDC2), we discuss the contribution of chemoattractant receptors (EBI2 or GPR183, S1PR1, and CCR7) and integrins to cDC2 positioning and function. We give particular attention to a newly identified role in cDC2 for adhesion G-protein coupled receptor E5 (Adgre5 or CD97) and its ligand CD55, detailing how this mechanosensing system contributes to splenic cDC2 positioning and homeostasis. Additional roles of CD97 in the immune system are reviewed. The ability of cDC2 to be activated by circulating missing self-CD47 cells and to integrate multiple red blood cell (RBC)-derived inputs is discussed. Finally, we describe the process of activated cDC2 migration to engage and prime helper T cells. Throughout the review, we consider the insights into cDC function in the spleen that have emerged from imaging studies.
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Affiliation(s)
- Dan Liu
- Howard Hughes Medical Institute and Department of Microbiology and Immunology, University of California, San Francisco, California, USA
| | - Lihui Duan
- Howard Hughes Medical Institute and Department of Microbiology and Immunology, University of California, San Francisco, California, USA
| | - Jason G Cyster
- Howard Hughes Medical Institute and Department of Microbiology and Immunology, University of California, San Francisco, California, USA
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7
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SIRPα - CD47 axis regulates dendritic cell-T cell interactions and TCR activation during T cell priming in spleen. PLoS One 2022; 17:e0266566. [PMID: 35413056 PMCID: PMC9004769 DOI: 10.1371/journal.pone.0266566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Accepted: 03/22/2022] [Indexed: 11/19/2022] Open
Abstract
The SIRPα-CD47 axis plays an important role in T cell recruitment to sites of immune reaction and inflammation but its role in T cell antigen priming is incompletely understood. Employing OTII TCR transgenic mice bred to Cd47-/- (Cd47KO) or SKI mice, a knock-in transgenic animal expressing non-signaling cytoplasmic-truncated SIRPα, we investigated how the SIRPα-CD47 axis contributes to antigen priming. Here we show that adoptive transfer of Cd47KO or SKI Ova-specific CD4+ T cells (OTII) into Cd47KO and SKI recipients, followed by Ova immunization, elicited reduced T cell division and proliferation indices, increased apoptosis, and reduced expansion compared to transfer into WT mice. We confirmed prior reports that splenic T cell zone, CD4+ conventional dendritic cells (cDCs) and CD4+ T cell numbers were reduced in Cd47KO and SKI mice. We report that in vitro derived DCs from Cd47KO and SKI mice exhibited impaired migration in vivo and exhibited reduced CD11c+ DC proximity to OTII T cells in T cell zones after Ag immunization, which correlates with reduced TCR activation in transferred OTII T cells. These findings suggest that reduced numbers of CD4+ cDCs and their impaired migration contributes to reduced T cell-DC proximity in splenic T cell zone and reduced T cell TCR activation, cell division and proliferation, and indirectly increased T cell apoptosis.
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8
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Kelley SM, Ravichandran KS. Putting the brakes on phagocytosis: "don't-eat-me" signaling in physiology and disease. EMBO Rep 2021; 22:e52564. [PMID: 34041845 DOI: 10.15252/embr.202152564] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 03/12/2021] [Accepted: 04/29/2021] [Indexed: 12/12/2022] Open
Abstract
Timely removal of dying or pathogenic cells by phagocytes is essential to maintaining host homeostasis. Phagocytes execute the clearance process with high fidelity while sparing healthy neighboring cells, and this process is at least partially regulated by the balance of "eat-me" and "don't-eat-me" signals expressed on the surface of host cells. Upon contact, eat-me signals activate "pro-phagocytic" receptors expressed on the phagocyte membrane and signal to promote phagocytosis. Conversely, don't-eat-me signals engage "anti-phagocytic" receptors to suppress phagocytosis. We review the current knowledge of don't-eat-me signaling in normal physiology and disease contexts where aberrant don't-eat-me signaling contributes to pathology.
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Affiliation(s)
- Shannon M Kelley
- Center for Cell Clearance, University of Virginia, Charlottesville, VA, USA.,Department of Microbiology, Immunology, and Cancer Biology, University of Virginia, Charlottesville, VA, USA
| | - Kodi S Ravichandran
- Center for Cell Clearance, University of Virginia, Charlottesville, VA, USA.,Department of Microbiology, Immunology, and Cancer Biology, University of Virginia, Charlottesville, VA, USA.,VIB-UGent Center for Inflammation Research, Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
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9
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Okunuki Y, Tabor SJ, Lee MY, Connor KM. CD47 Deficiency Ameliorates Ocular Autoimmune Inflammation. Front Immunol 2021; 12:680568. [PMID: 34093583 PMCID: PMC8174453 DOI: 10.3389/fimmu.2021.680568] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Accepted: 04/29/2021] [Indexed: 12/20/2022] Open
Abstract
Autoimmune uveitis is a sight-threatening ocular inflammatory condition in which the retina and uveal tissues become a target of autoreactive immune cells. The CD47 is a ubiquitously expressed transmembrane protein which plays multiple roles in fundamental cellular functions including phagocytosis, proliferation, and adhesion. Signal regulatory protein alpha (SIRPα), one of the CD47 ligands, is predominantly expressed in myeloid lineage cells such as dendritic cells (DCs) or macrophages, and CD47-SIRPα signaling pathway is implicated in the development of autoimmune diseases. Our current study demonstrates how CD47 depletion is effective in the prevention of experimental autoimmune uveitis (EAU), an animal model of human autoimmune uveitis, in animals deficient of CD47 (CD47-/- ). Systemic suppression of SIRPα+ DCs in animals deficient in CD47 resulted in the inability of autoreactive CD4+ T cells to develop, which is crucial to induction of EAU. Of interest, retinal microglia, the resident immune cell of the retina, express SIRPα, however these cells were not operative in EAU suppression in response to CD47 depletion. These results identify CD47 as a significant regulator in the development of SIRPα+ DCs that is vital to disease induction in EAU.
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Affiliation(s)
| | | | | | - Kip M. Connor
- Angiogenesis Laboratory, Department of Ophthalmology, Massachusetts Eye and Ear, Harvard Medical School, Boston, MA, United States
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10
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Gradtke AC, Mentrup T, Lehmann CHK, Cabrera-Cabrera F, Desel C, Okakpu D, Assmann M, Dalpke A, Schaible UE, Dudziak D, Schröder B. Deficiency of the Intramembrane Protease SPPL2a Alters Antimycobacterial Cytokine Responses of Dendritic Cells. THE JOURNAL OF IMMUNOLOGY 2021; 206:164-180. [PMID: 33239420 DOI: 10.4049/jimmunol.2000151] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Accepted: 10/30/2020] [Indexed: 12/30/2022]
Abstract
Signal peptide peptidase-like 2a (SPPL2a) is an aspartyl intramembrane protease essential for degradation of the invariant chain CD74. In humans, absence of SPPL2a leads to Mendelian susceptibility to mycobacterial disease, which is attributed to a loss of the dendritic cell (DC) subset conventional DC2. In this study, we confirm depletion of conventional DC2 in lymphatic tissues of SPPL2a-/- mice and demonstrate dependence on CD74 using SPPL2a-/- CD74-/- mice. Upon contact with mycobacteria, SPPL2a-/- bone marrow-derived DCs show enhanced secretion of IL-1β, whereas production of IL-10 and IFN-β is reduced. These effects correlated with modulated responses upon selective stimulation of the pattern recognition receptors TLR4 and Dectin-1. In SPPL2a-/- bone marrow-derived DCs, Dectin-1 is redistributed to endosomal compartments. Thus, SPPL2a deficiency alters pattern recognition receptor pathways in a CD74-dependent way, shifting the balance from anti- to proinflammatory cytokines in antimycobacterial responses. We propose that in addition to the DC reduction, this altered DC functionality contributes to Mendelian susceptibility to mycobacterial disease upon SPPL2a deficiency.
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Affiliation(s)
- Ann-Christine Gradtke
- Institute of Physiological Chemistry, Technische Universität Dresden, D-01307 Dresden, Germany
| | - Torben Mentrup
- Institute of Physiological Chemistry, Technische Universität Dresden, D-01307 Dresden, Germany
| | - Christian H K Lehmann
- Laboratory of Dendritic Cell Biology, Department of Dermatology, Friedrich-Alexander University Erlangen-Nürnberg, University Hospital Erlangen, D-91052 Erlangen, Germany.,Medical Immunology Campus Erlangen, D-91054 Erlangen, Germany.,Deutsches Zentrum Immuntherapie, D-91054 Erlangen, Germany.,Comprehensive Cancer Center Erlangen-European Metropolitan Area of Nuremberg, D-91054 Erlangen, Germany
| | - Florencia Cabrera-Cabrera
- Institute of Physiological Chemistry, Technische Universität Dresden, D-01307 Dresden, Germany.,Biochemical Institute, Christian-Albrechts-University Kiel, D-24118 Kiel, Germany
| | - Christine Desel
- Biochemical Institute, Christian-Albrechts-University Kiel, D-24118 Kiel, Germany
| | - Darian Okakpu
- Institute of Physiological Chemistry, Technische Universität Dresden, D-01307 Dresden, Germany
| | - Maike Assmann
- Priority Program Infections, Division of Cellular Microbiology, Research Center Borstel, Leibniz Lung Center, and German Center for Infection Research, partner site Borstel, D-23845 Borstel, Germany; and
| | - Alexander Dalpke
- Institute of Medical Microbiology and Hygiene, Technische Universität Dresden, D-01307 Dresden, Germany
| | - Ulrich E Schaible
- Priority Program Infections, Division of Cellular Microbiology, Research Center Borstel, Leibniz Lung Center, and German Center for Infection Research, partner site Borstel, D-23845 Borstel, Germany; and
| | - Diana Dudziak
- Laboratory of Dendritic Cell Biology, Department of Dermatology, Friedrich-Alexander University Erlangen-Nürnberg, University Hospital Erlangen, D-91052 Erlangen, Germany.,Medical Immunology Campus Erlangen, D-91054 Erlangen, Germany.,Deutsches Zentrum Immuntherapie, D-91054 Erlangen, Germany.,Comprehensive Cancer Center Erlangen-European Metropolitan Area of Nuremberg, D-91054 Erlangen, Germany
| | - Bernd Schröder
- Institute of Physiological Chemistry, Technische Universität Dresden, D-01307 Dresden, Germany;
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Abstract
Multiple myeloma remains an incurable disease despite great advances in its therapeutic landscape. Increasing evidence supports the belief that immune dysfunction plays an important role in the disease pathogenesis, progression, and drug resistance. Recent efforts have focused on harnessing the immune system to exert anti-myeloma effects with encouraging outcomes. First-in-class anti-CD38 monoclonal antibody, daratumumab, now forms part of standard treatment regimens in relapsed and refractory settings and is shifting to front-line treatments. However, a non-negligible number of patients will progress and be triple refractory from the first line of treatment. Antibody-drug conjugates, bispecific antibodies, and chimeric antigen receptors (CAR) are being developed in a heavily pretreated setting with outstanding results. Belantamab mafodotin-blmf has already received approval and other anti-B-cell maturation antigen (BCMA) therapies (CARs and bispecific antibodies are expected to be integrated in therapeutic options against myeloma soon. Nonetheless, immunotherapy faces different challenges in terms of efficacy and safety, and manufacturing and economic drawbacks associated with such a line of therapy pose additional obstacles to broadening its use. In this review, we described the most important clinical data on immunotherapeutic agents, delineated the limitations that lie in immunotherapy, and provided potential insights to overcome such issues.
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12
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Kidder K, Bian Z, Shi L, Liu Y. Inflammation Unrestrained by SIRPα Induces Secondary Hemophagocytic Lymphohistiocytosis Independent of IFN-γ. THE JOURNAL OF IMMUNOLOGY 2020; 205:2821-2833. [PMID: 33028619 DOI: 10.4049/jimmunol.2000652] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Accepted: 09/14/2020] [Indexed: 12/28/2022]
Abstract
A hallmark of secondary hemophagocytic lymphohistiocytosis (sHLH), a severe form of cytokine storm syndrome, is the emergence of overactivated macrophages that engulf healthy host blood cells (i.e., hemophagocytosis) and contribute to the dysregulated inflammation-driven pathology. In this study, we show that depleting SIRPα (SIRPα-/-) in mice during TLR9-driven inflammation exacerbates and accelerates the onset of fulminant sHLH, in which systemic hemophagocytosis, hypercytokinemia, consumptive cytopenias, hyperferritinemia, and other hemophagocytic lymphohistiocytosis hallmarks were apparent. In contrast, mice expressing SIRPα, including those deficient of the SIRPα ligand CD47 (CD47-/-), do not phenocopy SIRPα deficiency and fail to fully develop sHLH, albeit TLR9-inflamed wild-type and CD47-/- mice exhibited hemophagocytosis, anemia, and splenomegaly. Although IFN-γ is largely considered a driver of hemophagocytic lymphohistiocytosis pathology, IFN-γ neutralization did not preclude the precipitation of sHLH in TLR9-inflamed SIRPα-/- mice, whereas macrophage depletion attenuated sHLH in SIRPα-/- mice. Mechanistic studies confirmed that SIRPα not only restrains macrophages from acquiring a hemophagocytic phenotype but also tempers their proinflammatory cytokine and ferritin secretion by negatively regulating Erk1/2 and p38 activation downstream of TLR9 signaling. In addition to TLR9 agonists, TLR2, TLR3, or TLR4 agonists, as well as TNF-α, IL-6, or IL-17A, but not IFN-γ, similarly induced sHLH in SIRPα-/- mice but not SIRPα+ mice. Collectively, our study suggests that SIRPα plays a previously unappreciated role in sHLH/cytokine storm syndrome pathogenesis by preventing macrophages from becoming both hemophagocytic and hyperactivated under proinflammation.
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Affiliation(s)
- Koby Kidder
- Program of Immunology and Cellular Biology, Department of Biology, Georgia State University, Atlanta, GA 30302; and
| | - Zhen Bian
- Program of Immunology and Cellular Biology, Department of Biology, Georgia State University, Atlanta, GA 30302; and.,Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, GA 30302
| | - Lei Shi
- Program of Immunology and Cellular Biology, Department of Biology, Georgia State University, Atlanta, GA 30302; and.,Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, GA 30302
| | - Yuan Liu
- Program of Immunology and Cellular Biology, Department of Biology, Georgia State University, Atlanta, GA 30302; and .,Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, GA 30302
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13
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Yanagida E, Miyoshi H, Takeuchi M, Yoshida N, Nakashima K, Yamada K, Umeno T, Shimasaki Y, Furuta T, Seto M, Ohshima K. Clinicopathological analysis of immunohistochemical expression of CD47 and SIRPα in adult T-cell leukemia/lymphoma. Hematol Oncol 2020; 38:680-688. [PMID: 32569413 DOI: 10.1002/hon.2768] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Revised: 06/04/2020] [Accepted: 06/18/2020] [Indexed: 12/12/2022]
Abstract
The interaction of CD47 and signal-regulatory protein alpha (SIRPα) induces "don't eat me signal", leading suppression of phagocytosis. This signal can affect the clinical course of malignant disease. Although CD47 and SIRPα expression are associated with clinicopathological features in several neoplasms, the investigation for adult T-cell leukemia/lymphoma (ATLL) has not been well-documented. This study aimed to declare the association between CD47 and SIRPα expression and clinicopathological features in ATLL. We performed immunostaining on 73 biopsy samples and found that CD47 is primarily expressed in tumor cells, while SIRPα is expressed in non-neoplastic stromal cells. CD47 positive cases showed significantly higher FoxP3 (P = .0232) and lower CCR4 (P = .0214). SIRPα positive cases presented significantly better overall survival than SIRPα negative cases (P = .0132). SIRPα positive cases showed significantly HLA class I (P = .0062), HLA class II (P = .0133), microenvironment PD-L1 (miPD-L1) (P = .0032), and FoxP3 (P = .0229) positivity. In univariate analysis, SIRPα expression was significantly related to prognosis (Hazard ratio [HR] 0.470; 95% confidence interval [CI] 0.253-0.870; P = .0167], although multivariate analysis did not show SIPRα as an independent prognostic factor. The expression of SIRPα on stromal cells reflects activated immune surveillance mechanism in tumor microenvironment and induce good prognosis in ATLL. More detailed studies for gene expression or genomic abnormalities will disclose clinical and biological significance of the CD47 and SIRPα in ATLL.
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Affiliation(s)
- Eriko Yanagida
- Department of Pathology, Kurume University School of Medicine, Kurume, Japan
| | - Hiroaki Miyoshi
- Department of Pathology, Kurume University School of Medicine, Kurume, Japan
| | - Mai Takeuchi
- Department of Pathology, Kurume University School of Medicine, Kurume, Japan
| | - Noriaki Yoshida
- Department of Pathology, Kurume University School of Medicine, Kurume, Japan.,Department of Clinical Studies, Radiation Effects Research Foundation, Hiroshima, Japan
| | - Kazutaka Nakashima
- Department of Pathology, Kurume University School of Medicine, Kurume, Japan
| | - Kyohei Yamada
- Department of Pathology, Kurume University School of Medicine, Kurume, Japan
| | - Takeshi Umeno
- Department of Pathology, Kurume University School of Medicine, Kurume, Japan
| | - Yasumasa Shimasaki
- Department of Pathology, Kurume University School of Medicine, Kurume, Japan
| | - Takuya Furuta
- Department of Pathology, Kurume University School of Medicine, Kurume, Japan
| | - Masao Seto
- Department of Pathology, Kurume University School of Medicine, Kurume, Japan
| | - Koichi Ohshima
- Department of Pathology, Kurume University School of Medicine, Kurume, Japan
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14
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Nishimura T, Saito Y, Washio K, Komori S, Respatika D, Kotani T, Murata Y, Ohnishi H, Mizobuchi S, Matozaki T. SIRPα on CD11c + cells induces Th17 cell differentiation and subsequent inflammation in the CNS in experimental autoimmune encephalomyelitis. Eur J Immunol 2020; 50:1560-1570. [PMID: 32438469 DOI: 10.1002/eji.201948410] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 04/12/2020] [Indexed: 01/06/2023]
Abstract
Signal regulatory protein α (SIRPα) is expressed predominantly on type 2 conventional dendritic cells (cDC2s) and macrophages. We previously showed that mice systemically lacking SIRPα were resistant to experimental autoimmune encephalomyelitis (EAE). Here, we showed that deletion of SIRPα in CD11c+ cells of mice (SirpaΔDC mice) also markedly ameliorated the development of EAE. The frequency of cDCs and migratory DCs (mDCs), as well as that of Th17 cells, were significantly reduced in draining lymph nodes of SirpaΔDC mice at the onset of EAE. In addition, we found the marked reduction in the number of Th17 cells and DCs in the CNS of SirpaΔDC mice at the peak of EAE. Whereas inducible systemic ablation of SIRPα before the induction of EAE prevented disease development, that after EAE onset did not ameliorate the clinical signs of disease. We also found that EAE development was partially attenuated in mice with CD11c+ cell-specific ablation of CD47, a ligand of SIRPα. Collectively, our results suggest that SIRPα expressed on CD11c+ cells, such as cDC2s and mDCs, is indispensable for the development of EAE, being required for the priming of self-reactive Th17 cells in the periphery as well as for the inflammation in the CNS.
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Affiliation(s)
- Taichi Nishimura
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Chuo-ku, Kobe, Japan.,Division of Anesthesiology, Department of Surgery Related, Kobe University Graduate School of Medicine, Chuo-ku, Kobe, Japan
| | - Yasuyuki Saito
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Chuo-ku, Kobe, Japan
| | - Ken Washio
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Chuo-ku, Kobe, Japan
| | - Satomi Komori
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Chuo-ku, Kobe, Japan
| | - Datu Respatika
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Chuo-ku, Kobe, Japan.,Division of Reconstruction, Oculoplasty, and Oncology, Department of Ophthalmology, Faculty of Medicine, Public Health, and Nursing, Gadjah Mada University, Yogyakarta, Indonesia
| | - Takenori Kotani
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Chuo-ku, Kobe, Japan
| | - Yoji Murata
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Chuo-ku, Kobe, Japan
| | - Hiroshi Ohnishi
- Department of Laboratory Sciences, Gunma University Graduate School of Health Sciences, Gunma, Japan
| | - Satoshi Mizobuchi
- Division of Anesthesiology, Department of Surgery Related, Kobe University Graduate School of Medicine, Chuo-ku, Kobe, Japan
| | - Takashi Matozaki
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Chuo-ku, Kobe, Japan
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15
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The Immunotherapeutic Effect of SIRP α-Silenced DCs against Cervical Cancer. J Immunol Res 2020; 2020:1705187. [PMID: 32411788 PMCID: PMC7199593 DOI: 10.1155/2020/1705187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 10/25/2019] [Accepted: 12/11/2019] [Indexed: 11/30/2022] Open
Abstract
Signal regulatory protein α (SIRPα), a transmembrane protein that is predominantly expressed in dendritic cells (DCs) or macrophages, interacts with CD47 that is overexpressed in almost all types of tumor cells. The interaction between SIRPα and CD47 leads to a negative signal that prevents the phenotypic and functional maturation of DC and inhibits phagocytosis. The SIRPα knockdown in DCs that were pulsed with a modified HPV16E7 (HPV16mE7) protein with enhanced antigenicity and reduced transformation activity results in increased cytokine (TNF-α/IL-12/IL-6) secretion, IFN-γ secretion by T lymphocytes, and in vitro/in vivo tumoricidal activity against cervical cancer cells. Taken together, these results suggest that SIRPα-silenced DC vaccination presented potential therapeutic implications against cervical cancer.
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16
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Franssen LE, Stege CAM, Zweegman S, van de Donk NWCJ, Nijhof IS. Resistance Mechanisms Towards CD38-Directed Antibody Therapy in Multiple Myeloma. J Clin Med 2020; 9:E1195. [PMID: 32331242 PMCID: PMC7230744 DOI: 10.3390/jcm9041195] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 04/10/2020] [Accepted: 04/21/2020] [Indexed: 12/21/2022] Open
Abstract
Antibodies targeting CD38 are rapidly changing the treatment landscape of multiple myeloma (MM). CD38-directed antibodies have several mechanisms of action. Fc-dependent immune effector mechanisms include complement-dependent cytotoxicity (CDC), antibody-dependent cell-mediated cytotoxicity (ADCC), antibody-dependent cellular phagocytosis (ADCP) and apoptosis. In addition, direct effects and immunomodulatory effects contribute to the efficacy of CD38-directed antibodies. Daratumumab, the first-in-class anti-CD38 monoclonal antibody, is now part of standard treatment regimens of both newly diagnosed as well as relapsed/refractory MM patients. The FDA has recently approved isatuximab in combination with pomalidomide and dexamethasone for relapsed/refractory MM patients after at least two prior therapies. Further, the other CD38-targeting antibodies (i.e., MOR202 and TAK-079) are increasingly used in clinical trials. The shift to front-line treatment of daratumumab will lead to an increase in patients refractory to CD38 antibody therapy already after first-line treatment. Therefore, it is important to gain insight into the mechanisms of resistance to CD38-targeting antibodies in MM, and to develop strategies to overcome this resistance. In the current review, we will briefly describe the most important clinical data and mechanisms of action and will focus in depth on the current knowledge on mechanisms of resistance to CD38-targeting antibodies and potential strategies to overcome this.
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Affiliation(s)
- Laurens E. Franssen
- Department of Hematology, Amsterdam University Medical Center, De Boelelaan 1117, 1081 HV Amsterdam, The Netherlands; (C.A.M.S.); (S.Z.); (N.W.C.J.v.d.D.); (I.S.N.)
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17
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Abstract
Rapid advances have been made to uncover the mechanisms that regulate dendritic cell (DC) development, and in turn, how models of development can be employed to define dendritic cell function. Models of DC development have been used to define the unique functions of DC subsets during immune responses to distinct pathogens. More recently, models of DC function have expanded to include their homeostatic and inflammatory physiology, modes of communication with various innate and adaptive immune lineages, and specialized functions across different lymphoid organs. New models of DC development call for revisions of previously accepted paradigms with respect to the ontogeny of plasmacytoid DC (pDC) and classical DC (cDC) subsets. By far, development of the cDC1 subset is best understood, and models have now been developed that can separate deficiencies in development from deficiencies in function. Such models are lacking for pDCs and cDC2s, limiting the depth of our understanding of their unique and essential roles during immune responses. If novel immunotherapies aim to harness the functions of human DCs, understanding of DC development will be essential to develop models DC function. Here we review emerging models of DC development and function.
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Affiliation(s)
- David A Anderson
- Department of Pathology and Immunology, School of Medicine, Washington University in St. Louis, St. Louis, MO, United States.
| | - Kenneth M Murphy
- Department of Pathology and Immunology, School of Medicine, Washington University in St. Louis, St. Louis, MO, United States; Howard Hughes Medical Institute, School of Medicine, Washington University in St. Louis, St. Louis, MO, United States
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18
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Komori S, Saito Y, Respatika D, Nishimura T, Kotani T, Murata Y, Matozaki T. SIRPα + dendritic cells promote the development of fibroblastic reticular cells in murine peripheral lymph nodes. Eur J Immunol 2019; 49:1364-1371. [PMID: 31099900 DOI: 10.1002/eji.201948103] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2019] [Revised: 04/01/2019] [Accepted: 05/15/2019] [Indexed: 11/06/2022]
Abstract
Nonhematopoietic stromal cells contribute to the organization and homeostasis of secondary lymphoid organs by producing cytokines and chemokines. The development and maintenance of these stromal cells are thought to be regulated by innate immune cells. Indeed, we recently showed that signal regulatory protein α (SIRPα)-positive dendritic cells (DCs) are essential for the proliferation and survival of podoplanin (Pdpn)-positive fibroblastic reticular cells (FRCs) in mouse spleen. We have now established an in vitro culture system for lymph node stromal cells (LNSCs) isolated from mouse peripheral LNs. Activated DCs and TNF-α each promoted the proliferation of cultured LNSCs, most of which were found to be Pdpn+ FRCs. Furthermore, ablation of SIRPα in CD11c+ cells attenuated this effect of DCs on LNSC proliferation. Transplantation of activated DCs together with cultured LNSCs into the renal subcapsular space markedly increased the number of ER-TR7+ stromal cells as well as induced the accumulation of T cells and increased the expression of Ccl19 in the transplants. Ablation of SIRPα in CD11c+ cells greatly impaired the development of LN-like structure in the transplants. Our findings thus suggest that SIRPα+ DCs are important for the proliferation and differentiation of Pdpn+ FRCs in peripheral LNs.
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Affiliation(s)
- Satomi Komori
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Yasuyuki Saito
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Datu Respatika
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Kobe, Japan.,Division of Reconstruction, Oculoplasty, and Oncology, Faculty of Medicine, Department of Ophthalmology, Public Health, and Nursing, Gadjah Mada University, Yogyakarta, Indonesia
| | - Taichi Nishimura
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Takenori Kotani
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Yoji Murata
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Takashi Matozaki
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Kobe, Japan
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19
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Song M, Xu S, Zhong A, Zhang J. Crosstalk between macrophage and T cell in atherosclerosis: Potential therapeutic targets for cardiovascular diseases. Clin Immunol 2019; 202:11-17. [DOI: 10.1016/j.clim.2019.03.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 12/03/2018] [Accepted: 03/01/2019] [Indexed: 01/05/2023]
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20
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Myers LM, Tal MC, Torrez Dulgeroff LB, Carmody AB, Messer RJ, Gulati G, Yiu YY, Staron MM, Angel CL, Sinha R, Markovic M, Pham EA, Fram B, Ahmed A, Newman AM, Glenn JS, Davis MM, Kaech SM, Weissman IL, Hasenkrug KJ. A functional subset of CD8 + T cells during chronic exhaustion is defined by SIRPα expression. Nat Commun 2019; 10:794. [PMID: 30770827 PMCID: PMC6377614 DOI: 10.1038/s41467-019-08637-9] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Accepted: 01/09/2019] [Indexed: 12/21/2022] Open
Abstract
Prolonged exposure of CD8+ T cells to antigenic stimulation, as in chronic viral infections, leads to a state of diminished function termed exhaustion. We now demonstrate that even during exhaustion there is a subset of functional CD8+ T cells defined by surface expression of SIRPα, a protein not previously reported on lymphocytes. On SIRPα+ CD8+ T cells, expression of co-inhibitory receptors is counterbalanced by expression of co-stimulatory receptors and it is only SIRPα+ cells that actively proliferate, transcribe IFNγ and show cytolytic activity. Furthermore, target cells that express the ligand for SIRPα, CD47, are more susceptible to CD8+ T cell-killing in vivo. SIRPα+ CD8+ T cells are evident in mice infected with Friend retrovirus, LCMV Clone 13, and in patients with chronic HCV infections. Furthermore, therapeutic blockade of PD-L1 to reinvigorate CD8+ T cells during chronic infection expands the cytotoxic subset of SIRPα+ CD8+ T cells.
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Affiliation(s)
- Lara M Myers
- Laboratory of Persistent Viral Diseases, Rocky Mountain Laboratories, Hamilton, MT, 59840, USA
| | - Michal Caspi Tal
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Laughing Bear Torrez Dulgeroff
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Aaron B Carmody
- Research Technologies Branch, Rocky Mountain Laboratories, NIAID, NIH, Hamilton, MT, 59840, USA
| | - Ronald J Messer
- Laboratory of Persistent Viral Diseases, Rocky Mountain Laboratories, Hamilton, MT, 59840, USA
| | - Gunsagar Gulati
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Ying Ying Yiu
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Matthew M Staron
- Research Technologies Branch, Rocky Mountain Laboratories, NIAID, NIH, Hamilton, MT, 59840, USA
- Foundational Immunology, AbbVie Bioresearch Center, Worcester, MA, 01605, USA
| | - Cesar Lopez Angel
- Deparment of Immunology, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Rahul Sinha
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Maxim Markovic
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Edward A Pham
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA, 94305, USA
- Department of Gastroenterology and Hepatology, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Benjamin Fram
- Department of Gastroenterology and Hepatology, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Aijaz Ahmed
- Department of Gastroenterology and Hepatology, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Aaron M Newman
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA, 94305, USA
- Department of Biomedical Data Science, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Jeffrey S Glenn
- Department of Gastroenterology and Hepatology, Stanford University School of Medicine, Stanford, CA, 94305, USA
- Deparment of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Mark M Davis
- Deparment of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Susan M Kaech
- Department of Immunobiology, Yale School of Medicine, New Haven, CT, 06520, USA
- NOMIS Center for Immunobiology and Microbial Pathogenesis, Salk Institute, La Jolla, CA, 92037, USA
| | - Irving L Weissman
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Kim J Hasenkrug
- Laboratory of Persistent Viral Diseases, Rocky Mountain Laboratories, Hamilton, MT, 59840, USA.
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21
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Murata Y, Saito Y, Kotani T, Matozaki T. CD47-signal regulatory protein α signaling system and its application to cancer immunotherapy. Cancer Sci 2018; 109:2349-2357. [PMID: 29873856 PMCID: PMC6113446 DOI: 10.1111/cas.13663] [Citation(s) in RCA: 79] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 06/01/2018] [Accepted: 06/05/2018] [Indexed: 12/30/2022] Open
Abstract
Tumor cells evade immune surveillance through direct or indirect interactions with various types of immune cell, with much recent attention being focused on modifying immune cell responses as the basis for the development of new cancer treatments. Signal regulatory protein α (SIRPα) and CD47 are both transmembrane proteins that interact with each other and constitute a cell-cell communication system. SIRPα is particularly abundant in myeloid cells such as macrophages and dendritic cells, whereas CD47 is expressed ubiquitously and its expression level is elevated in cancer cells. Recent studies have shown that blockade of CD47-SIRPα interaction enhances the phagocytic activity of phagocytes such as macrophages toward tumor cells in vitro as well as resulting in the efficient eradication of tumor cells in a variety of xenograft or syngeneic mouse models of cancer. Moreover, CD47 blockade has been shown to promote the stimulation of tumor-specific cytotoxic T cells by macrophages or dendritic cells. Biological agents, such as Abs and recombinant proteins, that target human CD47 or SIRPα have been developed and are being tested in preclinical models of human cancer or in clinical trials with cancer patients. Preclinical studies have also suggested that CD47 or SIRPα blockade may have a synergistic antitumor effect in combination with immune checkpoint inhibitors that target the adaptive immune system. Targeting of the CD47-SIRPα signaling system is thus a promising strategy for cancer treatment based on modulation of both innate and acquired immune responses to tumor cells.
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Affiliation(s)
- Yoji Murata
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Yasuyuki Saito
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Takenori Kotani
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Takashi Matozaki
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Kobe, Japan
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22
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Audiger C, Lesage S. BIM determines the number of merocytic dendritic cells, a cell type that breaks immune tolerance. Immunol Cell Biol 2018; 96:1008-1017. [DOI: 10.1111/imcb.12165] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Revised: 11/16/2017] [Accepted: 05/06/2018] [Indexed: 11/26/2022]
Affiliation(s)
- Cindy Audiger
- Department of Immunology-Oncology; Maisonneuve-Rosemont Hospital; Montreal QC H1T 2M4 Canada
- Département de microbiologie, infectiologie et immunologie; Université de Montréal; Montreal QC H3C 3J7 Canada
| | - Sylvie Lesage
- Department of Immunology-Oncology; Maisonneuve-Rosemont Hospital; Montreal QC H1T 2M4 Canada
- Département de microbiologie, infectiologie et immunologie; Université de Montréal; Montreal QC H3C 3J7 Canada
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23
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Alaoui L, Palomino G, Zurawski S, Zurawski G, Coindre S, Dereuddre-Bosquet N, Lecuroux C, Goujard C, Vaslin B, Bourgeois C, Roques P, Le Grand R, Lambotte O, Favier B. Early SIV and HIV infection promotes the LILRB2/MHC-I inhibitory axis in cDCs. Cell Mol Life Sci 2018; 75:1871-1887. [PMID: 29134249 PMCID: PMC11105587 DOI: 10.1007/s00018-017-2712-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Revised: 10/23/2017] [Accepted: 11/06/2017] [Indexed: 12/31/2022]
Abstract
Classical dendritic cells (cDCs) play a pivotal role in the early events that tip the immune response toward persistence or viral control. In vitro studies indicate that HIV infection induces the dysregulation of cDCs through binding of the LILRB2 inhibitory receptor to its MHC-I ligands and the strength of this interaction was proposed to drive disease progression. However, the dynamics of the LILRB2/MHC-I inhibitory axis in cDCs during early immune responses against HIV are yet unknown. Here, we show that early HIV-1 infection induces a strong and simultaneous increase of LILRB2 and MHC-I expression on the surface of blood cDCs. We further characterized the early dynamics of LILRB2 and MHC-I expression by showing that SIVmac251 infection of macaques promotes coordinated up-regulation of LILRB2 and MHC-I on cDCs and monocytes/macrophages, from blood and lymph nodes. Orientation towards the LILRB2/MHC-I inhibitory axis starts from the first days of infection and is transiently induced in the entire cDC population in acute phase. Analysis of the factors involved indicates that HIV-1 replication, TLR7/8 triggering, and treatment by IL-10 or type I IFNs increase LILRB2 expression. Finally, enhancement of the LILRB2/MHC-I inhibitory axis is specific to HIV-1 and SIVmac251 infections, as expression of LILRB2 on cDCs decreased in naturally controlled chikungunya virus infection of macaques. Altogether, our data reveal a unique up-regulation of LILRB2 and its MHC-I ligands on cDCs in the early phase of SIV/HIV infection, which may account for immune dysregulation at a critical stage of the anti-viral response.
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Affiliation(s)
- Lamine Alaoui
- CEA-Université Paris Sud 11-INSERM U1184, Immunology of Viral Infections and Autoimmune Diseases (IMVA), IDMIT Department, IBJF, DRF, Fontenay-aux-Roses, France
| | - Gustavo Palomino
- CEA-Université Paris Sud 11-INSERM U1184, Immunology of Viral Infections and Autoimmune Diseases (IMVA), IDMIT Department, IBJF, DRF, Fontenay-aux-Roses, France
| | - Sandy Zurawski
- Baylor Institute for Immunology Research, Dallas, TX, USA
| | | | - Sixtine Coindre
- CEA-Université Paris Sud 11-INSERM U1184, Immunology of Viral Infections and Autoimmune Diseases (IMVA), IDMIT Department, IBJF, DRF, Fontenay-aux-Roses, France
| | - Nathalie Dereuddre-Bosquet
- CEA-Université Paris Sud 11-INSERM U1184, Immunology of Viral Infections and Autoimmune Diseases (IMVA), IDMIT Department, IBJF, DRF, Fontenay-aux-Roses, France
| | - Camille Lecuroux
- CEA-Université Paris Sud 11-INSERM U1184, Immunology of Viral Infections and Autoimmune Diseases (IMVA), IDMIT Department, IBJF, DRF, Fontenay-aux-Roses, France
| | - Cecile Goujard
- Assistance Publique-Hôpitaux de Paris, Service de Médecine Interne et Immunologie Clinique, Groupe Hospitalier Universitaire Paris Sud, Hôpital Bicêtre, Le Kremlin-Bicêtre, France
| | - Bruno Vaslin
- CEA-Université Paris Sud 11-INSERM U1184, Immunology of Viral Infections and Autoimmune Diseases (IMVA), IDMIT Department, IBJF, DRF, Fontenay-aux-Roses, France
| | - Christine Bourgeois
- CEA-Université Paris Sud 11-INSERM U1184, Immunology of Viral Infections and Autoimmune Diseases (IMVA), IDMIT Department, IBJF, DRF, Fontenay-aux-Roses, France
| | - Pierre Roques
- CEA-Université Paris Sud 11-INSERM U1184, Immunology of Viral Infections and Autoimmune Diseases (IMVA), IDMIT Department, IBJF, DRF, Fontenay-aux-Roses, France
| | - Roger Le Grand
- CEA-Université Paris Sud 11-INSERM U1184, Immunology of Viral Infections and Autoimmune Diseases (IMVA), IDMIT Department, IBJF, DRF, Fontenay-aux-Roses, France
| | - Olivier Lambotte
- CEA-Université Paris Sud 11-INSERM U1184, Immunology of Viral Infections and Autoimmune Diseases (IMVA), IDMIT Department, IBJF, DRF, Fontenay-aux-Roses, France
- Assistance Publique-Hôpitaux de Paris, Service de Médecine Interne et Immunologie Clinique, Groupe Hospitalier Universitaire Paris Sud, Hôpital Bicêtre, Le Kremlin-Bicêtre, France
| | - Benoit Favier
- CEA-Université Paris Sud 11-INSERM U1184, Immunology of Viral Infections and Autoimmune Diseases (IMVA), IDMIT Department, IBJF, DRF, Fontenay-aux-Roses, France.
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24
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Murata Y, Tanaka D, Hazama D, Yanagita T, Saito Y, Kotani T, Oldenborg PA, Matozaki T. Anti-human SIRPα antibody is a new tool for cancer immunotherapy. Cancer Sci 2018; 109:1300-1308. [PMID: 29473266 PMCID: PMC5980332 DOI: 10.1111/cas.13548] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Revised: 02/17/2018] [Accepted: 02/19/2018] [Indexed: 01/15/2023] Open
Abstract
Interaction of signal regulatory protein α (SIRPα) expressed on the surface of macrophages with its ligand CD47 expressed on target cells negatively regulates phagocytosis of the latter cells by the former. We recently showed that blocking Abs to mouse SIRPα enhanced both the Ab‐dependent cellular phagocytosis (ADCP) activity of mouse macrophages for Burkitt's lymphoma Raji cells opsonized with an Ab to CD20 (rituximab) in vitro as well as the inhibitory effect of rituximab on the growth of tumors formed by Raji cells in nonobese diabetic (NOD)/SCID mice. However, the effects of blocking Abs to human SIRPα in preclinical cancer models have remained unclear given that such Abs have failed to interact with endogenous SIRPα expressed on macrophages of immunodeficient mice. With the use of Rag2−/−γc−/− mice harboring a transgene for human SIRPα under the control of human regulatory elements (hSIRPα‐DKO mice), we here show that a blocking Ab to human SIRPα significantly enhanced the ADCP activity of macrophages derived from these mice for human cancer cells. The anti‐human SIRPα Ab also markedly enhanced the inhibitory effect of rituximab on the growth of tumors formed by Raji cells in hSIRPα‐DKO mice. Our results thus suggest that the combination of Abs to human SIRPα with therapeutic Abs specific for tumor antigens warrants further investigation for potential application to cancer immunotherapy. In addition, humanized mice, such as hSIRPα‐DKO mice, should prove useful for validation of the antitumor effects of checkpoint inhibitors before testing in clinical trials.
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Affiliation(s)
- Yoji Murata
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Daisuke Tanaka
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Daisuke Hazama
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Tadahiko Yanagita
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Yasuyuki Saito
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Takenori Kotani
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Per-Arne Oldenborg
- Department of Integrative Medical Biology, Section for Histology and Cell Biology, Umeå University, Umeå, Sweden
| | - Takashi Matozaki
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, Kobe, Japan
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25
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Smirnov A, Pohlmann S, Nehring M, Ali S, Mann-Nüttel R, Scheu S, Antoni AC, Hansen W, Büettner M, Gardiasch MJ, Westendorf AM, Wirsdörfer F, Pastille E, Dudda M, Flohé SB. Sphingosine 1-Phosphate- and C-C Chemokine Receptor 2-Dependent Activation of CD4 + Plasmacytoid Dendritic Cells in the Bone Marrow Contributes to Signs of Sepsis-Induced Immunosuppression. Front Immunol 2017; 8:1622. [PMID: 29218051 PMCID: PMC5703700 DOI: 10.3389/fimmu.2017.01622] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Accepted: 11/08/2017] [Indexed: 12/24/2022] Open
Abstract
Sepsis is the dysregulated response of the host to systemic, mostly bacterial infection, and is associated with an enhanced susceptibility to life-threatening opportunistic infections. During polymicrobial sepsis, dendritic cells (DCs) secrete enhanced levels of interleukin (IL) 10 due to an altered differentiation in the bone marrow and contribute to the development of immunosuppression. We investigated the origin of the altered DC differentiation using murine cecal ligation and puncture (CLP), a model for human polymicrobial sepsis. Bone marrow cells (BMC) were isolated after sham or CLP operation, the cellular composition was analyzed, and bone marrow-derived DCs (BMDCs) were generated in vitro. From 24 h on after CLP, BMC gave rise to BMDC that released enhanced levels of IL-10. In parallel, a population of CD11chiMHCII+CD4+ DCs expanded in the bone marrow in a MyD88-dependent manner. Prior depletion of the CD11chiMHCII+CD4+ DCs from BMC in vitro reversed the increased IL-10 secretion of subsequently differentiating BMDC. The expansion of the CD11chiMHCII+CD4+ DC population in the bone marrow after CLP required the function of sphingosine 1-phosphate receptors and C-C chemokine receptor (CCR) 2, the receptor for C-C chemokine ligand (CCL) 2, but was not associated with monocyte mobilization. CD11chiMHCII+CD4+ DCs were identified as plasmacytoid DCs (pDCs) that had acquired an activated phenotype according to their increased expression of MHC class II and CD86. A redistribution of CD4+ pDCs from MHC class II− to MHC class II+ cells concomitant with enhanced expression of CD11c finally led to the rise in the number of CD11chiMHCII+CD4+ DCs. Enhanced levels of CCL2 were found in the bone marrow of septic mice and the inhibition of CCR2 dampened the expression of CD86 on CD4+ pDCs after CLP in vitro. Depletion of pDCs reversed the bias of splenic DCs toward increased IL-10 synthesis after CLP in vivo. Thus, during polymicrobial sepsis, CD4+ pDCs are activated in the bone marrow and induce functional reprogramming of differentiating BMDC toward an immunosuppressive phenotype.
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Affiliation(s)
- Anna Smirnov
- Department of Orthopedics and Trauma Surgery, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Stephanie Pohlmann
- Department of Orthopedics and Trauma Surgery, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Melanie Nehring
- Department of Orthopedics and Trauma Surgery, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Shafaqat Ali
- Institute of Medical Microbiology and Hospital Hygiene, University of Düsseldorf, Düsseldorf, Germany.,Cells in Motion, Cluster of Excellence, University of Münster, Münster, Germany
| | - Ritu Mann-Nüttel
- Institute of Medical Microbiology and Hospital Hygiene, University of Düsseldorf, Düsseldorf, Germany
| | - Stefanie Scheu
- Institute of Medical Microbiology and Hospital Hygiene, University of Düsseldorf, Düsseldorf, Germany
| | - Anne-Charlotte Antoni
- Department of Orthopedics and Trauma Surgery, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Wiebke Hansen
- Institute of Medical Microbiology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Manuela Büettner
- Institute of Functional and Applied Anatomy, Hannover Medical School, Hannover, Germany
| | - Miriam J Gardiasch
- Department of Orthopedics and Trauma Surgery, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Astrid M Westendorf
- Institute of Medical Microbiology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Florian Wirsdörfer
- Medical Faculty, Institute of Cell Biology (Cancer Research), University of Duisburg-Essen, Essen, Germany
| | - Eva Pastille
- Institute of Medical Microbiology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Marcel Dudda
- Department of Orthopedics and Trauma Surgery, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Stefanie B Flohé
- Department of Orthopedics and Trauma Surgery, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
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26
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SIRPα + dendritic cells regulate homeostasis of fibroblastic reticular cells via TNF receptor ligands in the adult spleen. Proc Natl Acad Sci U S A 2017; 114:E10151-E10160. [PMID: 29109283 DOI: 10.1073/pnas.1711345114] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
In secondary lymphoid organs, development and homeostasis of stromal cells such as podoplanin (Pdpn)-positive fibroblastic reticular cells (FRCs) are regulated by hematopoietic cells, but the cellular and molecular mechanisms of such regulation have remained unclear. Here we show that ablation of either signal regulatory protein α (SIRPα), an Ig superfamily protein, or its ligand CD47 in conventional dendritic cells (cDCs) markedly reduced the number of CD4+ cDCs as well as that of Pdpn+ FRCs and T cells in the adult mouse spleen. Such ablation also impaired the survival of FRCs as well as the production by CD4+ cDCs of tumor necrosis factor receptor (TNFR) ligands, including TNF-α, which was shown to promote the proliferation and survival of Pdpn+ FRCs. CD4+ cDCs thus regulate the steady-state homeostasis of FRCs in the adult spleen via the production of TNFR ligands, with the CD47-SIRPα interaction in cDCs likely being indispensable for such regulation.
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27
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Matlung HL, Szilagyi K, Barclay NA, van den Berg TK. The CD47-SIRPα signaling axis as an innate immune checkpoint in cancer. Immunol Rev 2017; 276:145-164. [PMID: 28258703 DOI: 10.1111/imr.12527] [Citation(s) in RCA: 368] [Impact Index Per Article: 52.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Immune checkpoint inhibitors, including those targeting CTLA-4/B7 and the PD-1/PD-L1 inhibitory pathways, are now available for clinical use in cancer patients, with other interesting checkpoint inhibitors being currently in development. Most of these have the purpose to promote adaptive T cell-mediated immunity against cancer. Here, we review another checkpoint acting to potentiate the activity of innate immune cells towards cancer. This innate immune checkpoint is composed of what has become known as the 'don't-eat me' signal CD47, which is a protein broadly expressed on normal cells and often overexpressed on cancer cells, and its counter-receptor, the myeloid inhibitory immunoreceptor SIRPα. Blocking CD47-SIRPα interactions has been shown to promote the destruction of cancer cells by phagocytes, including macrophages and neutrophils. Furthermore, there is growing evidence that targeting of the CD47-SIRPα axis may also promote antigen-presenting cell function and thereby stimulate adaptive T cell-mediated anti-cancer immunity. The development of CD47-SIRPα checkpoint inhibitors and the potential side effects that these may have are discussed. Collectively, this identifies the CD47-SIRPα axis as a promising innate immune checkpoint in cancer, and with data of the first clinical studies with CD47-SIRPα checkpoint inhibitors expected within the coming years, this is an exciting and rapidly developing field.
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Affiliation(s)
- Hanke L Matlung
- Department of Blood Cell Research, Sanquin Research and Landsteiner Laboratory, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Katka Szilagyi
- Department of Blood Cell Research, Sanquin Research and Landsteiner Laboratory, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Neil A Barclay
- Sir William Dunn School of Pathology, University of Oxford, Oxford, UK
| | - Timo K van den Berg
- Department of Blood Cell Research, Sanquin Research and Landsteiner Laboratory, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands.,Department of Cell Biology and Immunology, VU medical Center, Amsterdam, The Netherlands
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28
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Sichien D, Lambrecht BN, Guilliams M, Scott CL. Development of conventional dendritic cells: from common bone marrow progenitors to multiple subsets in peripheral tissues. Mucosal Immunol 2017; 10:831-844. [PMID: 28198365 DOI: 10.1038/mi.2017.8] [Citation(s) in RCA: 130] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Accepted: 01/14/2017] [Indexed: 02/04/2023]
Abstract
Our understanding of conventional dendritic cell (cDC) development and the functional specializations of distinct subsets in the peripheral tissues has increased greatly in recent years. Here, we review cDC development from the distinct progenitors in the bone marrow through to the distinct cDC subsets found in barrier tissues, providing an overview of the different subsets described in each location. In addition, we detail the transcription factors and local signals that have been proposed to control this developmental process. Importantly, despite these significant advances, numerous questions remain to be answered regarding cDC development. For example, it remains unclear whether the different subsets described, such as the CD103+CD11b+ and CD103-CD11b+ cDCs in the intestines, truly represent different populations or rather distinct developmental or activation stages. Furthermore, whether distinct progenitors exist for these cDC subsets remains to be determined. Thus in the last part of this review we discuss what we believe will be the main questions facing the field for the coming years.
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Affiliation(s)
- D Sichien
- Laboratory of Immunoregulation and Mucosal Immunology, VIB-UGent Center for Inflammation Research, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - B N Lambrecht
- Laboratory of Immunoregulation and Mucosal Immunology, VIB-UGent Center for Inflammation Research, Ghent, Belgium
- Department of Respiratory Medicine, Ghent University, Ghent, Belgium
- Department of Pulmonary Medicine, ErasmusMC, Rotterdam, The Netherlands
| | - M Guilliams
- Laboratory of Immunoregulation and Mucosal Immunology, VIB-UGent Center for Inflammation Research, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - C L Scott
- Laboratory of Immunoregulation and Mucosal Immunology, VIB-UGent Center for Inflammation Research, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
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29
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Ratnikova NM, Lezhnin YN, Frolova EI, Kravchenko JE, Chumakov SP. CD47 receptor as a primary target for cancer therapy. Mol Biol 2017. [DOI: 10.1134/s0026893317010150] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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30
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Yanagita T, Murata Y, Tanaka D, Motegi SI, Arai E, Daniwijaya EW, Hazama D, Washio K, Saito Y, Kotani T, Ohnishi H, Oldenborg PA, Garcia NV, Miyasaka M, Ishikawa O, Kanai Y, Komori T, Matozaki T. Anti-SIRP α antibodies as a potential new tool for cancer immunotherapy. JCI Insight 2017; 2:e89140. [PMID: 28097229 DOI: 10.1172/jci.insight.89140] [Citation(s) in RCA: 112] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Tumor cells are thought to evade immune surveillance through interaction with immune cells. Much recent attention has focused on the modification of immune responses as a basis for new cancer treatments. SIRPα is an Ig superfamily protein that inhibits phagocytosis in macrophages upon interaction with its ligand CD47 expressed on the surface of target cells. Here, we show that SIRPα is highly expressed in human renal cell carcinoma and melanoma. Furthermore, an anti-SIRPα Ab that blocks the interaction with CD47 markedly suppressed tumor formation by renal cell carcinoma or melanoma cells in immunocompetent syngeneic mice. This inhibitory effect of the Ab appeared to be mediated by dual mechanisms: direct induction of Ab-dependent cellular phagocytosis of tumor cells by macrophages and blockade of CD47-SIRPα signaling that negatively regulates such phagocytosis. The antitumor effect of the Ab was greatly attenuated by selective depletion not only of macrophages but also of NK cells or CD8+ T cells. In addition, the anti-SIRPα Ab also enhances the inhibitory effects of Abs against CD20 and programmed cell death 1 (PD-1) on tumor formation in mice injected with SIRPα-nonexpressing tumor cells. Anti-SIRPα Abs thus warrant further study as a potential new therapy for a broad range of cancers.
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Affiliation(s)
- Tadahiko Yanagita
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology.,Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Yoji Murata
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology
| | - Daisuke Tanaka
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology
| | - Sei-Ichiro Motegi
- Department of Dermatology, Gunma University Graduate School of Medicine, Gunma, Japan
| | - Eri Arai
- Division of Molecular Pathology, National Cancer Center Research Institute, Tokyo, Japan.,Department of Pathology, Keio University School of Medicine, Tokyo, Japan
| | | | - Daisuke Hazama
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology
| | - Ken Washio
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology
| | - Yasuyuki Saito
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology
| | - Takenori Kotani
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology
| | - Hiroshi Ohnishi
- Department of Laboratory Sciences, Gunma University Graduate School of Health Sciences, Gunma, Japan
| | - Per-Arne Oldenborg
- Department of Integrative Medical Biology, Section for Histology and Cell Biology, Umeå University, Umeå, Sweden
| | - Noel Verjan Garcia
- Laboratory of Immunodynamics, Department of Microbiology and Immunology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Masayuki Miyasaka
- Laboratory of Immunodynamics, Department of Microbiology and Immunology, Osaka University Graduate School of Medicine, Osaka, Japan.,MediCity Research Laboratory, University of Turku, Turku, Finland
| | - Osamu Ishikawa
- Department of Dermatology, Gunma University Graduate School of Medicine, Gunma, Japan
| | - Yae Kanai
- Division of Molecular Pathology, National Cancer Center Research Institute, Tokyo, Japan.,Department of Pathology, Keio University School of Medicine, Tokyo, Japan
| | - Takahide Komori
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Takashi Matozaki
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology
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31
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Bian Z, Shi L, Guo YL, Lv Z, Tang C, Niu S, Tremblay A, Venkataramani M, Culpepper C, Li L, Zhou Z, Mansour A, Zhang Y, Gewirtz A, Kidder K, Zen K, Liu Y. Cd47-Sirpα interaction and IL-10 constrain inflammation-induced macrophage phagocytosis of healthy self-cells. Proc Natl Acad Sci U S A 2016; 113:E5434-43. [PMID: 27578867 PMCID: PMC5027463 DOI: 10.1073/pnas.1521069113] [Citation(s) in RCA: 100] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Rapid clearance of adoptively transferred Cd47-null (Cd47(-/-)) cells in congeneic WT mice suggests a critical self-recognition mechanism, in which CD47 is the ubiquitous marker of self, and its interaction with macrophage signal regulatory protein α (SIRPα) triggers inhibitory signaling through SIRPα cytoplasmic immunoreceptor tyrosine-based inhibition motifs and tyrosine phosphatase SHP-1/2. However, instead of displaying self-destruction phenotypes, Cd47(-/-) mice manifest no, or only mild, macrophage phagocytosis toward self-cells except under the nonobese diabetic background. Studying our recently established Sirpα-KO (Sirpα(-/-)) mice, as well as Cd47(-/-) mice, we reveal additional activation and inhibitory mechanisms besides the CD47-SIRPα axis dominantly controlling macrophage behavior. Sirpα(-/-) mice and Cd47(-/-) mice, although being normally healthy, develop severe anemia and splenomegaly under chronic colitis, peritonitis, cytokine treatments, and CFA-/LPS-induced inflammation, owing to splenic macrophages phagocytizing self-red blood cells. Ex vivo phagocytosis assays confirmed general inactivity of macrophages from Sirpα(-/-) or Cd47(-/-) mice toward healthy self-cells, whereas they aggressively attack toward bacteria, zymosan, apoptotic, and immune complex-bound cells; however, treating these macrophages with IL-17, LPS, IL-6, IL-1β, and TNFα, but not IFNγ, dramatically initiates potent phagocytosis toward self-cells, for which only the Cd47-Sirpα interaction restrains. Even for macrophages from WT mice, phagocytosis toward Cd47(-/-) cells does not occur without phagocytic activation. Mechanistic studies suggest a PKC-Syk-mediated signaling pathway, to which IL-10 conversely inhibits, is required for activating macrophage self-targeting, followed by phagocytosis independent of calreticulin Moreover, we identified spleen red pulp to be one specific tissue that provides stimuli constantly activating macrophage phagocytosis albeit lacking in Cd47(-/-) or Sirpα(-/-) mice.
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Affiliation(s)
- Zhen Bian
- Program of Immunology and Cell Biology, Department of Biology, Center for Diagnostics & Therapeutics, Georgia State University, Atlanta, GA 30302; State Key Laboratory of Pharmaceutical Biotechnology, Nanjing Advanced Institute for Life Sciences, Nanjing University, Nanjing, Jiangsu 210093, China
| | - Lei Shi
- Program of Immunology and Cell Biology, Department of Biology, Center for Diagnostics & Therapeutics, Georgia State University, Atlanta, GA 30302
| | - Ya-Lan Guo
- Program of Immunology and Cell Biology, Department of Biology, Center for Diagnostics & Therapeutics, Georgia State University, Atlanta, GA 30302
| | - Zhiyuan Lv
- Program of Immunology and Cell Biology, Department of Biology, Center for Diagnostics & Therapeutics, Georgia State University, Atlanta, GA 30302
| | - Cong Tang
- Program of Immunology and Cell Biology, Department of Biology, Center for Diagnostics & Therapeutics, Georgia State University, Atlanta, GA 30302
| | - Shuo Niu
- Program of Immunology and Cell Biology, Department of Biology, Center for Diagnostics & Therapeutics, Georgia State University, Atlanta, GA 30302
| | - Alexandra Tremblay
- Program of Immunology and Cell Biology, Department of Biology, Center for Diagnostics & Therapeutics, Georgia State University, Atlanta, GA 30302
| | - Mahathi Venkataramani
- Program of Immunology and Cell Biology, Department of Biology, Center for Diagnostics & Therapeutics, Georgia State University, Atlanta, GA 30302
| | - Courtney Culpepper
- Program of Immunology and Cell Biology, Department of Biology, Center for Diagnostics & Therapeutics, Georgia State University, Atlanta, GA 30302
| | - Limin Li
- State Key Laboratory of Pharmaceutical Biotechnology, Nanjing Advanced Institute for Life Sciences, Nanjing University, Nanjing, Jiangsu 210093, China
| | - Zhen Zhou
- State Key Laboratory of Pharmaceutical Biotechnology, Nanjing Advanced Institute for Life Sciences, Nanjing University, Nanjing, Jiangsu 210093, China
| | - Ahmed Mansour
- Program of Immunology and Cell Biology, Department of Biology, Center for Diagnostics & Therapeutics, Georgia State University, Atlanta, GA 30302
| | - Yongliang Zhang
- Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, Life Science Institute (LSI) Immunology Programme, National University of Singapore, Singapore 117456
| | - Andrew Gewirtz
- Center for Inflammation, Immunity and Infection, Georgia State University, Atlanta, GA 30303
| | - Koby Kidder
- Program of Immunology and Cell Biology, Department of Biology, Center for Diagnostics & Therapeutics, Georgia State University, Atlanta, GA 30302; Department of Cell Biology, Rutgers University, New Brunswick, NJ 08901
| | - Ke Zen
- State Key Laboratory of Pharmaceutical Biotechnology, Nanjing Advanced Institute for Life Sciences, Nanjing University, Nanjing, Jiangsu 210093, China
| | - Yuan Liu
- Program of Immunology and Cell Biology, Department of Biology, Center for Diagnostics & Therapeutics, Georgia State University, Atlanta, GA 30302; Center for Inflammation, Immunity and Infection, Georgia State University, Atlanta, GA 30303;
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32
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Liu Q, Wen W, Tang L, Qin CJ, Lin Y, Zhang HL, Wu H, Ashton C, Wu HP, Ding J, Dong W, Yu LX, Yang W, Huang DD, Wu MC, Wang HY, Yan HX. Inhibition of SIRPα in dendritic cells potentiates potent antitumor immunity. Oncoimmunology 2016; 5:e1183850. [PMID: 27757296 DOI: 10.1080/2162402x.2016.1183850] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Revised: 04/12/2016] [Accepted: 04/23/2016] [Indexed: 12/23/2022] Open
Abstract
Despite their central function in tumor immunity, dendritic cells (DCs) can respond to inhibitory signals and become tolerogenic, curtailing T cell responses in vivo. Here, we provide the evidence for an inhibitory function of signal regulatory protein (SIRP) α in DC survival and activation. In tumors from human liver cancer patients, infiltrative DCs expressed elevated levels of SIRPα, which is correlated with the induction of immune tolerance within the tumors. Silencing of SIRPα resulted in a significant increase in the longevity of antigen-pulsed DCs in the draining lymph nodes. In addition, SIRPα controls the activation and output of DCs. Silencing of DC-expressed SIRPα induced spontaneous and enhanced production of IL12 and costimulatory molecules, resulting in more potent cytotoxic T lymphocyte responses, including the eradication of previously established solid tumors. SIRPα exerted such effects, at least in part, via the association and sequestration of p85 subunit of PI3K. Thus, SIRPα is a critical regulator of DC lifespan and activity, and its inhibition might improve the clinical efficacy of DC-based tumor vaccines.
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Affiliation(s)
- Qiong Liu
- International Cooperation Laboratory on Signal Transduction, Eastern Hepatobiliary Surgery Institute, Second Military Medical University, Shanghai, P.R. China; Naval Medical Research Institute, Shanghai, China
| | - Wen Wen
- International Cooperation Laboratory on Signal Transduction, Eastern Hepatobiliary Surgery Institute, Second Military Medical University , Shanghai, P.R. China
| | - Liang Tang
- International Cooperation Laboratory on Signal Transduction, Eastern Hepatobiliary Surgery Institute, Second Military Medical University , Shanghai, P.R. China
| | - Chen-Jie Qin
- International Cooperation Laboratory on Signal Transduction, Eastern Hepatobiliary Surgery Institute, Second Military Medical University , Shanghai, P.R. China
| | - Yan Lin
- International Cooperation Laboratory on Signal Transduction, Eastern Hepatobiliary Surgery Institute, Second Military Medical University , Shanghai, P.R. China
| | - Hui-Lu Zhang
- International Cooperation Laboratory on Signal Transduction, Eastern Hepatobiliary Surgery Institute, Second Military Medical University , Shanghai, P.R. China
| | - Han Wu
- International Cooperation Laboratory on Signal Transduction, Eastern Hepatobiliary Surgery Institute, Second Military Medical University , Shanghai, P.R. China
| | - Charles Ashton
- Eli and Edythe Broad Center for Regenerative Medicine and Stem Cell Research at USC, Department of Cell and Neurobiology, Keck School of Medicine, University of Southern California , Los Angeles, CA, USA
| | - Hong-Ping Wu
- International Cooperation Laboratory on Signal Transduction, Eastern Hepatobiliary Surgery Institute, Second Military Medical University , Shanghai, P.R. China
| | - Jin Ding
- International Cooperation Laboratory on Signal Transduction, Eastern Hepatobiliary Surgery Institute, Second Military Medical University , Shanghai, P.R. China
| | - Wei Dong
- International Cooperation Laboratory on Signal Transduction, Eastern Hepatobiliary Surgery Institute, Second Military Medical University , Shanghai, P.R. China
| | - Le-Xing Yu
- International Cooperation Laboratory on Signal Transduction, Eastern Hepatobiliary Surgery Institute, Second Military Medical University , Shanghai, P.R. China
| | - Wen Yang
- International Cooperation Laboratory on Signal Transduction, Eastern Hepatobiliary Surgery Institute, Second Military Medical University , Shanghai, P.R. China
| | - Dan-Dan Huang
- International Cooperation Laboratory on Signal Transduction, Eastern Hepatobiliary Surgery Institute, Second Military Medical University , Shanghai, P.R. China
| | - Meng-Chao Wu
- International Cooperation Laboratory on Signal Transduction, Eastern Hepatobiliary Surgery Institute, Second Military Medical University , Shanghai, P.R. China
| | - Hong-Yang Wang
- International Cooperation Laboratory on Signal Transduction, Eastern Hepatobiliary Surgery Institute, Second Military Medical University , Shanghai, P.R. China
| | - He-Xin Yan
- International Cooperation Laboratory on Signal Transduction, Eastern Hepatobiliary Surgery Institute, Second Military Medical University , Shanghai, P.R. China
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33
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Tengood JE, Levy RJ, Stachelek SJ. The use of CD47-modified biomaterials to mitigate the immune response. Exp Biol Med (Maywood) 2016; 241:1033-41. [PMID: 27190273 DOI: 10.1177/1535370216647130] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Addressing the aberrant interactions between immune cells and biomaterials represents an unmet need in biomaterial research. Although progress has been made in the development of bioinert coatings, identifying and targeting relevant cellular and molecular pathways can provide additional therapeutic strategies to address this major healthcare concern. To that end, we describe the immune inhibitory motif, receptor-ligand pairing of signal regulatory protein alpha and its cognate ligand CD47 as a potential signaling pathway to enhance biocompatibility. The goals of this article are to detail the known roles of CD47-signal regulatory protein alpha signal transduction pathway and to describe how immobilized CD47 can be used to mitigate the immune response to biomaterials. Current applications of CD47-modified biomaterials will also be discussed herein.
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Affiliation(s)
- Jillian E Tengood
- Division of Cardiology, Department of Pediatrics, The Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA Perelman School of Medicine, The University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Robert J Levy
- Division of Cardiology, Department of Pediatrics, The Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA Perelman School of Medicine, The University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Stanley J Stachelek
- Division of Cardiology, Department of Pediatrics, The Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA Perelman School of Medicine, The University of Pennsylvania, Philadelphia, PA 19104, USA
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34
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Yi T, Li J, Chen H, Wu J, An J, Xu Y, Hu Y, Lowell CA, Cyster JG. Splenic Dendritic Cells Survey Red Blood Cells for Missing Self-CD47 to Trigger Adaptive Immune Responses. Immunity 2015; 43:764-75. [PMID: 26453377 DOI: 10.1016/j.immuni.2015.08.021] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2015] [Revised: 06/29/2015] [Accepted: 08/25/2015] [Indexed: 02/06/2023]
Abstract
Sheep red blood cells (SRBCs) have long been used as a model antigen for eliciting systemic immune responses, yet the basis for their adjuvant activity has been unknown. Here, we show that SRBCs failed to engage the inhibitory mouse SIRPα receptor on splenic CD4(+) dendritic cells (DCs), and this failure led to DC activation. Removal of the SIRPα ligand, CD47, from self-RBCs was sufficient to convert them into an adjuvant for adaptive immune responses. DC capture of Cd47(-/-) RBCs and DC activation occurred within minutes in a Src-family-kinase- and CD18-integrin-dependent manner. These findings provide an explanation for the adjuvant mechanism of SRBCs and reveal that splenic DCs survey blood cells for missing self-CD47, a process that might contribute to detecting and mounting immune responses against pathogen-infected RBCs.
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Affiliation(s)
- Tangsheng Yi
- Department of Microbiology and Immunology, University of California, San Francisco and Howard Hughes Medical Institute, CA 94143, USA
| | - Jianhua Li
- Department of Microbiology and Immunology, University of California, San Francisco and Howard Hughes Medical Institute, CA 94143, USA
| | - Hsin Chen
- Department of Microbiology and Immunology, University of California, San Francisco and Howard Hughes Medical Institute, CA 94143, USA
| | - Jiaxi Wu
- Department of Microbiology and Immunology, University of California, San Francisco and Howard Hughes Medical Institute, CA 94143, USA
| | - Jinping An
- Department of Microbiology and Immunology, University of California, San Francisco and Howard Hughes Medical Institute, CA 94143, USA
| | - Ying Xu
- Department of Microbiology and Immunology, University of California, San Francisco and Howard Hughes Medical Institute, CA 94143, USA
| | - Yongmei Hu
- Department of Laboratory Medicine, University of California, San Francisco, San Francisco, CA 94141, USA
| | - Clifford A Lowell
- Department of Laboratory Medicine, University of California, San Francisco, San Francisco, CA 94141, USA
| | - Jason G Cyster
- Department of Microbiology and Immunology, University of California, San Francisco and Howard Hughes Medical Institute, CA 94143, USA.
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Kolan SS, Lejon K, Koskinen Holm C, Sulniute R, Lundberg P, Matozaki T, Oldenborg PA. Non-Hematopoietic and Hematopoietic SIRPα Signaling Differently Regulates Murine B Cell Maturation in Bone Marrow and Spleen. PLoS One 2015. [PMID: 26222253 PMCID: PMC4519279 DOI: 10.1371/journal.pone.0134113] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
B lymphocyte development occurs in the bone marrow, while final differentiation and maturation can occur in both the bone marrow and the spleen. Here we provide evidence that signal regulatory protein α (SIRPα), an Ig-superfamily ITIM-receptor expressed by myeloid but not by lymphoid cells, is involved in regulating B cell maturation. Lack of SIRPα signaling in adult SIRPα-mutant mice resulted in a reduced maturation of B cells in the bone marrow, evident by reduced numbers of semi-mature IgD+IgMhi follicular type-II (F-II) and mature IgD+IgMlo follicular type-I (F-I) B cells, as well as reduced blood B cell numbers. In addition, lack of SIRPα signaling also impaired follicular B cell maturation in the spleen. Maturing BM or splenic B cells of SIRPα-mutant mice were found to express higher levels of the pro-apoptotic protein BIM and apoptosis was increased among these B cells. Bone marrow reconstitution experiments revealed that the B cell maturation defect in bone marrow and blood was due to lack of SIRPα signaling in non-hematopoietic cells, while hematopoietic SIRPα signaling was important for follicular B cell maturation in the spleen. Adding on to our previous findings of a stromal cell defect in SIRPα-mutant mice was the finding that gene expression of receptor activator of nuclear factor-ĸB ligand (RANKL) was significantly lower in cultured bone marrow stromal cells of SIRPα mutant mice. These data suggest a novel and opposite contribution of SIRPα signaling within non-hematopoietic and hematopoietic cells, respectively, to maintain B cell maturation and to prevent apoptosis in the bone marrow and spleen of adult mice.
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Affiliation(s)
| | - Kristina Lejon
- Department of Clinical Microbiology, Section for Immunology, Umeå University, Umeå, Sweden
| | | | - Rima Sulniute
- Department of Odontology, Umeå University, Umeå, Sweden
| | | | - Takashi Matozaki
- Department of Biochemistry and Molecular Biology, Division of Molecular and Cellular Signaling, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Per-Arne Oldenborg
- Department of Integrative Medical Biology, Umeå University, Umeå, Sweden
- * E-mail:
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Regulation of Phagocyte Migration by Signal Regulatory Protein-Alpha Signaling. PLoS One 2015; 10:e0127178. [PMID: 26057870 PMCID: PMC4461249 DOI: 10.1371/journal.pone.0127178] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2013] [Accepted: 04/13/2015] [Indexed: 01/13/2023] Open
Abstract
Signaling through the inhibitory receptor signal regulatory protein-alpha (SIRPα) controls effector functions in phagocytes. However, there are also indications that interactions between SIRPα and its ligand CD47 are involved in phagocyte transendothelial migration. We have investigated the involvement of SIRPα signaling in phagocyte migration in vitro and in vivo using mice that lack the SIRPα cytoplasmic tail. During thioglycolate-induced peritonitis in SIRPα mutant mice, both neutrophil and macrophage influx were found to occur, but to be significantly delayed. SIRPα signaling appeared to be essential for an optimal transendothelial migration and chemotaxis, and for the amoeboid type of phagocyte migration in 3-dimensional environments. These findings demonstrate, for the first time, that SIRPα signaling can directly control phagocyte migration, and this may contribute to the impaired inflammatory phenotype that has been observed in the absence of SIRPα signaling.
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Navarathna DHMLP, Stein EV, Lessey-Morillon EC, Nayak D, Martin-Manso G, Roberts DD. CD47 Promotes Protective Innate and Adaptive Immunity in a Mouse Model of Disseminated Candidiasis. PLoS One 2015; 10:e0128220. [PMID: 26010544 PMCID: PMC4444371 DOI: 10.1371/journal.pone.0128220] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2014] [Accepted: 04/24/2015] [Indexed: 11/19/2022] Open
Abstract
CD47 is a widely expressed receptor that regulates immunity by engaging its counter-receptor SIRPα on phagocytes and its secreted ligand thrombospondin-1. Mice lacking CD47 can exhibit enhanced or impaired host responses to bacterial pathogens, but its role in fungal immunity has not been examined. cd47-/- mice on a C57BL/6 background showed significantly increased morbidity and mortality following Candida albicans infection when compared with wild-type mice. Despite normal fungal colonization at earlier times, cd47-/- mice at four days post-infection had increased colonization of brain and kidneys accompanied by stronger inflammatory reactions. Neutrophil and macrophage numbers were significantly elevated in kidneys and neutrophils in the brains of infected cd47-/- mice. However, no defect in phagocytic activity towards C. albicans was observed in cd47-/- bone-marrow-derived macrophages, and neutrophil and macrophage killing of C. albicans was not impaired. CD47-deficiency did not alter the early humoral immune response to C. albicans. Th1, Th2, and Th17 population of CD4+ T cells were expanded in the spleen, and gene expression profiles of spleen and kidney showed stronger pro-inflammatory signaling in infected cd47-/- mice. The chemoattractant chemokines MIP-2α and MIP-2β were highly expressed in infected spleens of cd47-/- mice. G-CSF, GM-CSF, and the inflammasome component NLRP3 were more highly expressed in infected cd47-/- kidneys than in infected wild-type controls. Circulating pro- (TNF-α, IL-6) and anti-inflammatory cytokines (IL-10) were significantly elevated, but IL-17 was decreased. These data indicate that CD47 plays protective roles against disseminated candidiasis and alters pro-inflammatory and immunosuppressive pathways known to regulate innate and T cell immunity.
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Affiliation(s)
- Dhammika H. M. L. P. Navarathna
- Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892, United States of America
| | - Erica V. Stein
- Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892, United States of America
- Microbiology and Immunology Program of the Institute for Biomedical Sciences, Departments of Microbiology, Immunology and Tropical Medicine, George Washington University, Washington, D.C. 20037, United States of America
| | - Elizabeth C. Lessey-Morillon
- Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892, United States of America
| | - Debasis Nayak
- National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892, United States of America
| | - Gema Martin-Manso
- Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892, United States of America
| | - David D. Roberts
- Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892, United States of America
- * E-mail:
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Kolan SS, Boman A, Matozaki T, Lejon K, Oldenborg PA. Lack of non-hematopoietic SIRPα signaling disturbs the splenic marginal zone architecture resulting in accumulation and displacement of marginal zone B cells. Biochem Biophys Res Commun 2015; 460:645-50. [PMID: 25817792 DOI: 10.1016/j.bbrc.2015.03.084] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2015] [Accepted: 03/16/2015] [Indexed: 11/15/2022]
Abstract
Signal regulatory protein α (SIRPα) is an immunoglobulin super family protein predominantly expressed by myeloid but not lymphoid cells, and its role in lymphocyte homeostasis and function is still to be revealed. We demonstrate that mice bearing a mutant SIRPα lacking the cytoplasmic signaling domain (SIRPα MT) had an increased amount of splenic marginal zone (MZ) B cells compared to wild-type controls. Immunohistochemical analysis revealed an increased localization of MZB cells into B cell follicular areas of the white pulp in SIRPα MT spleens. However, we found no signs of an increased MZB cell activation level in MT mice. The immune response to T-independent antigens in vivo was slightly increased in SIRPα MT mice while sorted MZB from these mice responded normally to LPS in vitro. Bone marrow reconstitution experiments demonstrated that the MZB cell phenotype of SIRPα MT mice was due to lack of SIRPα signaling in non-hematopoietic cells. In contrast, MZ retention of MZ macrophages required hematopoietic SIRPα, while normal distribution of metallophilic macrophages required non-hematopoietic SIRPα signaling. In summary, these data identified SIRPα signaling in non-hematopoietic cells to play an important role in regulating the numbers and positioning MZB cell in the spleen.
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Affiliation(s)
- Shrikant S Kolan
- Department of Integrative Medical Biology, Umeå University, Umeå, Sweden
| | - Andreas Boman
- Department of Integrative Medical Biology, Umeå University, Umeå, Sweden
| | - Takashi Matozaki
- Department of Biochemistry and Molecular Biology, Division of Molecular and Cellular Signaling, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan
| | - Kristina Lejon
- Department of Clinical Microbiology, Division of Immunology, Umeå University, Umeå, Sweden
| | - Per-Arne Oldenborg
- Department of Integrative Medical Biology, Umeå University, Umeå, Sweden.
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Washio K, Kotani T, Saito Y, Respatika D, Murata Y, Kaneko Y, Okazawa H, Ohnishi H, Fukunaga A, Nishigori C, Matozaki T. Dendritic cell SIRPα regulates homeostasis of dendritic cells in lymphoid organs. Genes Cells 2015; 20:451-63. [PMID: 25818708 DOI: 10.1111/gtc.12238] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2015] [Accepted: 02/18/2015] [Indexed: 12/13/2022]
Abstract
Signal regulatory protein α (SIRPα), an immunoglobulin superfamily protein that is expressed predominantly in myeloid lineage cells such as dendritic cells (DCs) or macrophages, mediates cell-cell signaling. In the immune system, SIRPα is thought to be important for homeostasis of DCs, but it remains unclear whether SIRPα intrinsic to DCs is indeed indispensable for such functional role. Thus, we here generated the mice, in which SIRPα was specifically ablated in CD11c(+) DCs (Sirpa(Δ) (DC) ). Sirpa(Δ) (DC) mice manifested a marked reduction of CD4(+) CD8α(-) conventional DCs (cDCs) in the secondary lymphoid organs, as well as of Langerhans cells in the epidermis. Such reduction of cDCs in Sirpa(Δ) (DC) mice was comparable to that apparent with the mice, in which SIRPα was systemically ablated. Expression of SIRPα in DCs was well correlated with that of either endothelial cell-selective adhesion molecule (ESAM) or Epstein-Barr virus-induced molecule 2 (EBI2), both of which were also implicated in the regulation of DC homeostasis. Indeed, ESAM(+) or EBI2(+) cDCs were markedly reduced in the spleen of Sirpa(Δ) (DC) mice. Thus, our results suggest that SIRPα intrinsic to CD11c(+) DCs is essential for homeostasis of cDCs in the secondary lymphoid organs and skin.
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Affiliation(s)
- Ken Washio
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Kobe, 650-0017, Japan.,Division of Dermatology, Department of Internal Related, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Kobe, 650-0017, Japan
| | - Takenori Kotani
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Kobe, 650-0017, Japan
| | - Yasuyuki Saito
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Kobe, 650-0017, Japan
| | - Datu Respatika
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Kobe, 650-0017, Japan
| | - Yoji Murata
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Kobe, 650-0017, Japan
| | - Yoriaki Kaneko
- Department of Medicine and Clinical Science, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma, 371-8511, Japan
| | - Hideki Okazawa
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Kobe, 650-0017, Japan
| | - Hiroshi Ohnishi
- Department of Laboratory Sciences, Gunma University Graduate School of Health Sciences, 3-39-22 Showa-machi, Maebashi, Gunma, 371-8514, Japan
| | - Atsushi Fukunaga
- Division of Dermatology, Department of Internal Related, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Kobe, 650-0017, Japan
| | - Chikako Nishigori
- Division of Dermatology, Department of Internal Related, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Kobe, 650-0017, Japan
| | - Takashi Matozaki
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Kobe, 650-0017, Japan
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40
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Scott CL, Tfp ZM, Beckham KSH, Douce G, Mowat AM. Signal regulatory protein alpha (SIRPα) regulates the homeostasis of CD103(+) CD11b(+) DCs in the intestinal lamina propria. Eur J Immunol 2014; 44:3658-68. [PMID: 25236797 PMCID: PMC4284040 DOI: 10.1002/eji.201444859] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2014] [Revised: 08/14/2014] [Accepted: 09/16/2014] [Indexed: 12/23/2022]
Abstract
Signal regulatory protein alpha (SIRPα/CD172a) is a conserved transmembrane protein thought to play an inhibitory role in immune function by binding the ubiquitous ligand CD47. SIRPα expression has been used to identify dendritic cell subsets across species and here we examined its expression and function on intestinal DCs in mice. Normal mucosa contains four subsets of DCs based on their expression of CD103 and CD11b and three of these express SIRPα. However, loss of SIRPα signaling in mice leads to a selective reduction in the CD103+CD11b+ subset of DCs in the small intestine, colon, and among migratory DCs in the mesenteric lymph node. In parallel, these mice have reduced numbers of TH17 cells in steady-state intestinal mucosa, and a defective TH17 response to Citrobacter infection. Identical results were obtained in CD47KO mice. DC precursors from SIRPα mutant mice had an enhanced ability to generate CD103+CD11b+ DCs in vivo, but CD103+CD11b+ DCs from mutant mice were more prone to die by apoptosis. These data show a previously unappreciated and crucial role for SIRPα in the homeostasis of CD103+CD11b+ DCs in the intestine, as well as providing further evidence that this subset of DCs is critical for the development of mucosal TH17 responses.
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Affiliation(s)
- Charlotte L Scott
- Centre for Immunobiology, Institute of Infection, Immunity and Inflammation, College of Veterinary, Medical and Life Sciences, University of Glasgow, Scotland, UK; VIB Ghent University, Inflammation Research Centre (IRC), Laboratory of Immunoregulation, Ghent (Zwijnaarde), Belgium; Department of Respiratory Medicine, Ghent University Hospital, Ghent, Belgium
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41
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Wong ASL, Mortin-Toth S, Sung M, Canty AJ, Gulban O, Greaves DR, Danska JS. Polymorphism in the innate immune receptor SIRPα controls CD47 binding and autoimmunity in the nonobese diabetic mouse. THE JOURNAL OF IMMUNOLOGY 2014; 193:4833-44. [PMID: 25305319 DOI: 10.4049/jimmunol.1401984] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The signal regulatory protein (SIRP) locus encodes a family of paired receptors that mediate both activating and inhibitory signals and is associated with type 1 diabetes (T1D) risk. The NOD mouse model recapitulates multiple features of human T1D and enables mechanistic analysis of the impact of genetic variations on disease. In this study, we identify Sirpa encoding an inhibitory receptor on myeloid cells as a gene in the insulin-dependent diabetes locus 13.2 (Idd13.2) that drives islet inflammation and T1D. Compared to T1D-resistant strains, the NOD variant of SIRPα displayed greater binding to its ligand CD47, as well as enhanced T cell proliferation and diabetogenic potency. Myeloid cell-restricted expression of a Sirpa transgene accelerated disease in a dose-dependent manner and displayed genetic and functional interaction with the Idd5 locus to potentiate insulitis progression. Our study demonstrates that variations in both SIRPα sequence and expression level modulate T1D immunopathogenesis. Thus, we identify Sirpa as a T1D risk gene and provide insight into the complex mechanisms by which disease-associated variants act in concert to drive defined stages in disease progression.
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Affiliation(s)
- Andrea Sut Ling Wong
- Department of Immunology, Faculty of Medicine, University of Toronto, Toronto, Ontario M5S1A8, Canada; Program in Genetics and Genome Biology, The Hospital for Sick Children Research Institute, Toronto, Ontario M5G1X8, Canada
| | - Steven Mortin-Toth
- Program in Genetics and Genome Biology, The Hospital for Sick Children Research Institute, Toronto, Ontario M5G1X8, Canada
| | - Michael Sung
- Program in Genetics and Genome Biology, The Hospital for Sick Children Research Institute, Toronto, Ontario M5G1X8, Canada
| | - Angelo J Canty
- Department of Mathematics and Statistics, McMaster University, Hamilton, Ontario L8S4L8, Canada
| | - Omid Gulban
- Program in Genetics and Genome Biology, The Hospital for Sick Children Research Institute, Toronto, Ontario M5G1X8, Canada
| | - David R Greaves
- Sir William Dunn School of Pathology, University of Oxford, Oxford OX13RE, United Kingdom; and
| | - Jayne S Danska
- Department of Immunology, Faculty of Medicine, University of Toronto, Toronto, Ontario M5S1A8, Canada; Program in Genetics and Genome Biology, The Hospital for Sick Children Research Institute, Toronto, Ontario M5G1X8, Canada; Department of Medical Biophysics, Faculty of Medicine, University of Toronto, Toronto, Ontario M5S1A8, Canada
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42
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Haque A, Best SE, Montes de Oca M, James KR, Ammerdorffer A, Edwards CL, de Labastida Rivera F, Amante FH, Bunn PT, Sheel M, Sebina I, Koyama M, Varelias A, Hertzog PJ, Kalinke U, Gun SY, Rénia L, Ruedl C, MacDonald KPA, Hill GR, Engwerda CR. Type I IFN signaling in CD8- DCs impairs Th1-dependent malaria immunity. J Clin Invest 2014; 124:2483-96. [PMID: 24789914 DOI: 10.1172/jci70698] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Many pathogens, including viruses, bacteria, and protozoan parasites, suppress cellular immune responses through activation of type I IFN signaling. Recent evidence suggests that immune suppression and susceptibility to the malaria parasite, Plasmodium, is mediated by type I IFN; however, it is unclear how type I IFN suppresses immunity to blood-stage Plasmodium parasites. During experimental severe malaria, CD4+ Th cell responses are suppressed, and conventional DC (cDC) function is curtailed through unknown mechanisms. Here, we tested the hypothesis that type I IFN signaling directly impairs cDC function during Plasmodium infection in mice. Using cDC-specific IFNAR1-deficient mice, and mixed BM chimeras, we found that type I IFN signaling directly affects cDC function, limiting the ability of cDCs to prime IFN-γ-producing Th1 cells. Although type I IFN signaling modulated all subsets of splenic cDCs, CD8- cDCs were especially susceptible, exhibiting reduced phagocytic and Th1-promoting properties in response to type I IFNs. Additionally, rapid and systemic IFN-α production in response to Plasmodium infection required type I IFN signaling in cDCs themselves, revealing their contribution to a feed-forward cytokine-signaling loop. Together, these data suggest abrogation of type I IFN signaling in CD8- splenic cDCs as an approach for enhancing Th1 responses against Plasmodium and other type I IFN-inducing pathogens.
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43
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Zen K, Guo Y, Bian Z, Lv Z, Zhu D, Ohnishi H, Matozaki T, Liu Y. Inflammation-induced proteolytic processing of the SIRPα cytoplasmic ITIM in neutrophils propagates a proinflammatory state. Nat Commun 2014; 4:2436. [PMID: 24026300 DOI: 10.1038/ncomms3436] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2013] [Accepted: 08/13/2013] [Indexed: 01/14/2023] Open
Abstract
Signal regulatory protein α (SIRPα), an immunoreceptor tyrosine-based inhibitory motif (ITIM)-containing receptor, is an essential negative regulator of leukocyte inflammatory responses. Here we report that SIRPα cytoplasmic signalling ITIMs in neutrophils are cleaved during active inflammation and that the loss of SIRPα ITIMs enhances the polymorphonuclear leukocyte (PMN) inflammatory response. Using human leukocytes and two inflammatory models in mice, we show that the cleavage of SIRPα ITIMs in PMNs but not monocytes occurs at the post-acute stage of inflammation and correlates with increased PMN recruitment to inflammatory loci. Enhanced transmigration of PMNs and PMN-associated tissue damage are confirmed in mutant mice expressing SIRPα but lacking the ITIMs. Moreover, the loss of SIRPα ITIMs in PMNs during colitis is blocked by an anti-interleukin-17 (IL-17) antibody. These results demonstrate a SIRPα-based mechanism that dynamically regulates PMN inflammatory responses by generating a CD47-binding but non-signalling SIRPα 'decoy'.
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Affiliation(s)
- Ke Zen
- Jiangsu Engineering Research Center for MicroRNA Biology and Biotechnology, State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University School of Life Sciences, Nanjing 210093, China
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Murata Y, Kotani T, Ohnishi H, Matozaki T. The CD47-SIRPα signalling system: its physiological roles and therapeutic application. J Biochem 2014; 155:335-44. [PMID: 24627525 DOI: 10.1093/jb/mvu017] [Citation(s) in RCA: 121] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Signal regulatory protein α (SIRPα), also known as SHPS-1/BIT/ CD172a, is an immunoglobulin superfamily protein that binds to the protein tyrosine phosphatases SHP-1 and SHP-2 through its cytoplasmic region. CD47, another immunoglobulin superfamily protein, is a ligand for SIRPα, with the two proteins constituting a cell-cell communication system (the CD47-SIRPα signalling system). SIRPα is particularly abundant in the myeloid-lineage hematopoietic cells such as macrophages or dendritic cells (DCs), whereas CD47 is expressed ubiquitously. Interaction of CD47 (on red blood cells) with SIRPα (on macrophages) is thought to prevent the phagocytosis by the latter cells of the former cells, determining the lifespan of red blood cells. Recent studies further indicate that this signalling system plays important roles in engraftment of hematopoietic stem cells as well as in tumour immune surveillance through regulation of the phagocytic activity of macrophages. In the immune system, the CD47-SIRPα interaction is also important for the development of a subset of CD11c(+)DCs as well as organization of secondary lymphoid organs. Finally, the CD47-SIRPα signalling system likely regulates bone homeostasis by osteoclast development. Newly emerged functions of the CD47-SIRPα signalling system thus provide multiple therapeutic strategies for cancer, autoimmune diseases and bone disorders.
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Affiliation(s)
- Yoji Murata
- Department of Biochemistry and Molecular Biology, Division of Molecular and Cellular Signaling, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan; and Department of Laboratory Sciences, Gunma University Graduate School of Health Sciences, 3-39-22 Showa-Machi, Maebashi, Gunma 371-8514, Japan
| | - Takenori Kotani
- Department of Biochemistry and Molecular Biology, Division of Molecular and Cellular Signaling, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan; and Department of Laboratory Sciences, Gunma University Graduate School of Health Sciences, 3-39-22 Showa-Machi, Maebashi, Gunma 371-8514, Japan
| | - Hiroshi Ohnishi
- Department of Biochemistry and Molecular Biology, Division of Molecular and Cellular Signaling, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan; and Department of Laboratory Sciences, Gunma University Graduate School of Health Sciences, 3-39-22 Showa-Machi, Maebashi, Gunma 371-8514, Japan
| | - Takashi Matozaki
- Department of Biochemistry and Molecular Biology, Division of Molecular and Cellular Signaling, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan; and Department of Laboratory Sciences, Gunma University Graduate School of Health Sciences, 3-39-22 Showa-Machi, Maebashi, Gunma 371-8514, Japan
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45
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Baghi HB, Laval K, Favoreel H, Nauwynck HJ. Isolation and characterization of equine nasal mucosal CD172a + cells. Vet Immunol Immunopathol 2013; 157:155-63. [PMID: 24370377 DOI: 10.1016/j.vetimm.2013.12.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2013] [Revised: 11/21/2013] [Accepted: 12/01/2013] [Indexed: 12/22/2022]
Abstract
The nasal mucosa surface is continuously confronted with a broad variety of environmental antigens, ranging from harmless agents to potentially harmful pathogens. This area is under rigorous control of professional antigen presenting cells (APCs), such as dendritic cells (DCs) and macrophages. Mucosal APCs play a crucial role in inducing primary immune responses and the establishment of an immunological memory. In the present study, a detailed characterization of CD172a(+) cells, containing the APCs residing in the equine nasal mucosa was performed for the first time. CD172a(+) cells were isolated from collagenase-treated equine nasal mucosa fragments by MACS. Expression of surface markers was determined by flow cytometry and functional analysis was done by measuring the uptake of FITC conjugated ovalbumin (FITC-OVA). Cell surface phenotype of the isolated cells was as follows: 90% CD172a(+), 30% CD1c(+), 46% CD83(+), 42% CD206(+) and 28% MHC II(+). This clearly differs from the phenotype of blood-derived monocytes: 96% CD172a(+), 4% CD1c(+), 11% CD83(+), 9% CD206(+), 72% MHC II(+) and blood monocyte derived DCs: 99% CD172a(+), 13% CD1c(+), 30% CD83(+), 51% CD206(+) and 93% MHC II(+). The CD172a(+) nasal mucosal cells were functionally able to endocytose FITC-OVA but to a lesser degree than monocyte-derived DCs. Together, these results demonstrate that the isolated CD172a(+) nasal mucosal cells resemble immature DCs in the nasal area.
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Affiliation(s)
- Hossein Bannazadeh Baghi
- Laboratory of Virology, Department of Virology, Parasitology and Immunology, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, B-9820 Merelbeke, Belgium
| | - Kathlyn Laval
- Laboratory of Virology, Department of Virology, Parasitology and Immunology, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, B-9820 Merelbeke, Belgium
| | - Herman Favoreel
- Laboratory of Immunology, Department of Virology, Parasitology and Immunology, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, B-9820 Merelbeke, Belgium
| | - Hans J Nauwynck
- Laboratory of Virology, Department of Virology, Parasitology and Immunology, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, B-9820 Merelbeke, Belgium.
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Murata Y, Saito Y, Kaneko T, Kotani T, Kaneko Y, Ohnishi H, Matozaki T. Autoimmune animal models in the analysis of the CD47-SIRPα signaling pathway. Methods 2013; 65:254-9. [PMID: 24091004 DOI: 10.1016/j.ymeth.2013.09.016] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2013] [Revised: 09/18/2013] [Accepted: 09/24/2013] [Indexed: 12/19/2022] Open
Abstract
Signal regulatory protein α (SIRPα), also known as SHPS-1/SIRPA, is an immunoglobulin superfamily protein that binds to the protein tyrosine phosphatases Shp1 and Shp2 through its cytoplasmic region and is predominantly expressed in dendritic cells and macrophages. CD47, a widely expressed transmembrane protein, is a ligand for SIRPα, with the two proteins constituting a cell-cell communication system. It was previously demonstrated that the CD47-SIRPα signaling pathway is important for prevention of clearance by splenic macrophages of red blood cells or platelets from the bloodstream. In addition, this signaling pathway is also implicated in homeostatic regulation of dendritic cells and development of autoimmunity. Here we describe the detailed protocols for methods that were used in our recent studies to study the role of the CD47-SIRPα signaling pathway in autoimmunity. We also demonstrate that hematopoietic SIRPα as well as nonhematopoietic CD47 are important for development of experimental autoimmune encephalomyelitis. Thus, we here strengthen the importance of experimental animal models as well as other methods for the study of molecular pathogenesis of autoimmunity.
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Affiliation(s)
- Yoji Murata
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan
| | - Yasuyuki Saito
- Laboratory of Biosignal Sciences, Institute for Molecular and Cellular Regulation, Gunma University, 3-39-15 Showa-Machi, Maebashi, Gunma 371-8512, Japan; Department of Medicine and Clinical Science, Gunma University Graduate School of Medicine, 3-39-22 Showa-Machi, Maebashi, Gunma 371-8511, Japan
| | - Tetsuya Kaneko
- Laboratory of Biosignal Sciences, Institute for Molecular and Cellular Regulation, Gunma University, 3-39-15 Showa-Machi, Maebashi, Gunma 371-8512, Japan
| | - Takenori Kotani
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan
| | - Yoriaki Kaneko
- Department of Medicine and Clinical Science, Gunma University Graduate School of Medicine, 3-39-22 Showa-Machi, Maebashi, Gunma 371-8511, Japan
| | - Hiroshi Ohnishi
- Department of Laboratory Sciences, Gunma University Graduate School of Health Sciences, 3-39-22 Showa-Machi, Maebashi, Gunma 371-8514, Japan
| | - Takashi Matozaki
- Division of Molecular and Cellular Signaling, Department of Biochemistry and Molecular Biology, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan; Laboratory of Biosignal Sciences, Institute for Molecular and Cellular Regulation, Gunma University, 3-39-15 Showa-Machi, Maebashi, Gunma 371-8512, Japan.
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Anti-CD47 antibody-mediated phagocytosis of cancer by macrophages primes an effective antitumor T-cell response. Proc Natl Acad Sci U S A 2013; 110:11103-8. [PMID: 23690610 DOI: 10.1073/pnas.1305569110] [Citation(s) in RCA: 487] [Impact Index Per Article: 44.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Mobilization of the T-cell response against cancer has the potential to achieve long-lasting cures. However, it is not known how to harness antigen-presenting cells optimally to achieve an effective antitumor T-cell response. In this study, we show that anti-CD47 antibody-mediated phagocytosis of cancer by macrophages can initiate an antitumor T-cell immune response. Using the ovalbumin model antigen system, anti-CD47 antibody-mediated phagocytosis of cancer cells by macrophages resulted in increased priming of OT-I T cells [cluster of differentiation 8-positive (CD8(+))] but decreased priming of OT-II T cells (CD4(+)). The CD4(+) T-cell response was characterized by a reduction in forkhead box P3-positive (Foxp3(+)) regulatory T cells. Macrophages following anti-CD47-mediated phagocytosis primed CD8(+) T cells to exhibit cytotoxic function in vivo. This response protected animals from tumor challenge. We conclude that anti-CD47 antibody treatment not only enables macrophage phagocytosis of cancer but also can initiate an antitumor cytotoxic T-cell immune response.
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Yi T, Cyster JG. EBI2-mediated bridging channel positioning supports splenic dendritic cell homeostasis and particulate antigen capture. eLife 2013; 2:e00757. [PMID: 23682316 PMCID: PMC3654440 DOI: 10.7554/elife.00757] [Citation(s) in RCA: 114] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2013] [Accepted: 04/16/2013] [Indexed: 12/16/2022] Open
Abstract
Splenic dendritic cells (DCs) present blood-borne antigens to lymphocytes to promote T cell and antibody responses. The cues involved in positioning DCs in areas of antigen exposure in the spleen are undefined. Here we show that CD4+ DCs highly express EBI2 and migrate to its oxysterol ligand, 7α,25-OHC. In mice lacking EBI2 or the enzymes needed for generating normal distributions of 7α,25-OHC, CD4+ DCs are reduced in frequency and the remaining cells fail to situate in marginal zone bridging channels. The CD4+ DC deficiency can be rescued by LTβR agonism. EBI2-mediated positioning in bridging channels promotes DC encounter with blood-borne particulate antigen. Upon exposure to antigen, CD4+ DCs move rapidly to the T-B zone interface and promote induction of helper T cell and antibody responses. These findings establish an essential role for EBI2 in CD4+ DC positioning and homeostasis and in facilitating capture and presentation of blood-borne particulate antigens. DOI:http://dx.doi.org/10.7554/eLife.00757.001 One of the main roles of the spleen is to make the antibodies that protect the body against viruses, bacteria and other microorganisms. Antibodies are made by B cells, which are a type of white blood cell, after they have been exposed to antigens. For most antibody responses, it is also necessary for the B cells to get help from other white blood cells called T cells that have been exposed to antigens. Specialized cells called dendritic cells have a central role in bringing the antigens—which are usually fragments of the infectious agents that have invaded the body—to the T cells. One subset of dendritic cells, called CD4+ dendritic cells, are found in large numbers in a part of the spleen called the bridging channel, but the process by which these cells become localized in this channel has not been fully understood. Now, Yi and Cyster show that a receptor called EBI2, which is found on the surface of CD4+ dendritic cells, binds to a type of organic molecule called an oxysterol that is produced in the bridging channel. In mice that had been genetically engineered to lack EBI2 or the enzymes needed to make this particular oxysterol—which is known as 7α,25-dihydroxycholesterol, or 7α,25-OHC for short—the CD4+ dendritic cells were no longer clustered in the bridging channel and their number was markedly decreased. This showed that the interaction between EBI2 and the oxysterol was essential for ensuring that the CD4+ dendritic cells were in the right place. The correct positioning of the CD4+ dendritic cells was, in turn, necessary for maintaining cell numbers. Moreover, these mice had a weakened immune response because of the very low number of antigens that were being presented to the T cells. A number of autoimmune diseases, such as lupus, are caused by the body developing an immune response to its own cells and tissues. One implication of the work of Yi and Cyster is that if small molecule inhibitors of EBI2 could be designed, they might be able to suppress the onset of such autoimmune responses. DOI:http://dx.doi.org/10.7554/eLife.00757.002
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Affiliation(s)
- Tangsheng Yi
- Department of Microbiology and Immunology , University of California, San Francisco , San Francisco , United States ; Howard Hughes Medical Institute, University of California, San Francisco , San Francisco , United States
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CD47: A Cell Surface Glycoprotein Which Regulates Multiple Functions of Hematopoietic Cells in Health and Disease. ISRN HEMATOLOGY 2013; 2013:614619. [PMID: 23401787 PMCID: PMC3564380 DOI: 10.1155/2013/614619] [Citation(s) in RCA: 161] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2012] [Accepted: 11/19/2012] [Indexed: 12/22/2022]
Abstract
Interactions between cells and their surroundings are important for proper function and homeostasis in a multicellular organism. These interactions can either be established between the cells and molecules in their extracellular milieu, but also involve interactions between cells. In all these situations, proteins in the plasma membranes are critically involved to relay information obtained from the exterior of the cell. The cell surface glycoprotein CD47 (integrin-associated protein (IAP)) was first identified as an important regulator of integrin function, but later also was shown to function in ways that do not necessarily involve integrins. Ligation of CD47 can induce intracellular signaling resulting in cell activation or cell death depending on the exact context. By binding to another cell surface glycoprotein, signal regulatory protein alpha (SIRPα), CD47 can regulate the function of cells in the monocyte/macrophage lineage. In this spotlight paper, several functions of CD47 will be reviewed, although some functions may be more briefly mentioned. Focus will be on the ways CD47 regulates hematopoietic cells and functions such as CD47 signaling, induction of apoptosis, and regulation of phagocytosis or cell-cell fusion.
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Per-Arne O. Role of CD47 and Signal Regulatory Protein Alpha (SIRPα) in Regulating the Clearance of Viable or Aged Blood Cells. ACTA ACUST UNITED AC 2012; 39:315-20. [PMID: 23801922 DOI: 10.1159/000342537] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2012] [Accepted: 08/14/2012] [Indexed: 01/11/2023]
Abstract
SUMMARY The ubiquitously expressed cell surface glycoprotein CD47 is expressed by virtually all cells in the host, where it can function to regulate integrin-mediated responses, or constitute an important part of the erythrocyte band 3/Rh multi-protein complex. In addition, CD47 can protect viable cells from being phagocytosed by macrophages or dendritic cells. The latter mechanism is dependent on the interaction between target cell CD47 and SIRPα on the phagocyte. In this context, SIRPα functions to inhibit prophagocytic signaling from Fcγ receptors, complement receptors, and LDL receptor-related protein-1 (LRP-1), but not scavenger receptors. The expression level and/or distribution of CD47 may be altered on the surface of apoptotic/senescent cells, rendering the phagocytosis inhibitory function of the CD47/SIRPα interaction reduced or eliminated. Instead, the interaction between these 2 proteins may serve to enhance the binding of apoptotic/senescent target cells to the phagocyte to promote phagocytosis.
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Affiliation(s)
- Oldenborg Per-Arne
- Department of Integrative Medical Biology, Section for Histology and Cell Biology, Umeå University, Umeå, Sweden
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