1
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Dorando HK, Mutic EC, Tomaszewski KL, Tian L, Stefanov MK, Quinn CC, Veis DJ, Wardenburg JB, Musiek AC, Mehta-Shah N, Payton JE. LAIR1 prevents excess inflammatory tissue damage in S. aureus skin infection and Cutaneous T-cell Lymphoma. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.06.13.598864. [PMID: 38915487 PMCID: PMC11195265 DOI: 10.1101/2024.06.13.598864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/26/2024]
Abstract
Patients with cutaneous T cell lymphoma (CTCL) experience high morbidity and mortality due to S. aureus skin infections and sepsis, but the causative immune defect is unclear. We previously identified high levels of LAIR2, a decoy protein for the inhibitory receptor LAIR1, in advanced CTCL. Mice do not have a LAIR2 homolog, so we used Lair1 knock-out (KO) mice to model LAIR2 overexpression. In a model of subcutaneous S. aureus skin infection, Lair1 KO mice had significantly larger abscesses and areas of dermonecrosis compared to WT. Lair1 KO exhibited a pattern of increased inflammatory responses in infection and sterile immune stimulation, including increased production of proinflammatory cytokines and myeloid chemokines, neutrophil ROS, and collagen/ECM remodeling pathways. Notably, Lair1 KO infected skin had a similar bacterial burden and neutrophils and monocytes had equivalent S. aureus phagocytosis compared to WT. These findings support a model in which lack of LAIR1 signaling causes an excessive inflammatory response that does not improve infection control. CTCL skin lesions harbored similar patterns of increased expression in cytokine and collagen/ECM remodeling pathways, suggesting that high levels of LAIR2 in CTCL recapitulates Lair1 KO, causing inflammatory tissue damage and compromising host defense against S. aureus infection.
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Affiliation(s)
- Hannah K. Dorando
- Washington University School of Medicine, Department of Pathology and Immunology
| | - Evan C. Mutic
- Washington University School of Medicine, Department of Pathology and Immunology
| | | | - Ling Tian
- Washington University School of Medicine, Department of Pathology and Immunology
| | - Mellisa K. Stefanov
- Washington University School of Medicine, Department of Pathology and Immunology
| | - Chaz C. Quinn
- Washington University School of Medicine, Department of Pathology and Immunology
| | - Deborah J. Veis
- Washington University School of Medicine, Department of Medicine
| | | | - Amy C. Musiek
- Washington University School of Medicine, Department of Medicine
| | - Neha Mehta-Shah
- Washington University School of Medicine, Department of Medicine
| | - Jacqueline E. Payton
- Washington University School of Medicine, Department of Pathology and Immunology
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2
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Marchiano M, Iervasi E, Pesce G, Rumbullaku M, Foti C, Fumarulo R, Parodi A, Bagnasco M, Tampoia M, Saverino D. Increased concentration of soluble leukocyte-associated immunoglobulin-like receptor in sera from patients with blistering diseases: possible pathophysiological implications? Minerva Med 2023; 114:454-462. [PMID: 35156785 DOI: 10.23736/s0026-4806.22.07652-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/27/2023]
Abstract
BACKGROUND Autoimmune blistering diseases (AIBD), are a heterogeneous group. Despite their pathogenesis is not completely understood, autoantibodies against directed adhesion molecules of the skin and adjacent mucous membranes could play a key role. The leukocyte-associated-Ig-like-receptor (LAIR) family is a small group of immunoreceptor-tyrosine-based-inhibition-motif-containing inhibitory receptors, recognizing collagens. LAIR-1 is a transmembrane glycoprotein expressed on human-peripheral-blood-leukocytes. LAIR-2 is a secreted receptor mainly produced by CD4+ T-lymphocytes, and is able to regulate the inhibitory potential of LAIR-1. Both LAIRs have been associated with several autoimmune diseases and inflammatory responses. METHODS We evaluated circulating LAIRs in patients with different blistering skin diseases by ELISA. RESULTS A significant increase of serum LAIR-2, and to a lesser extent of sLAIR-1 (with the exception of Pemphigus vulgaris), in the whole group of patients with bullous diseases, irrespective of the pathogenesis, compared to healthy controls was evident. CONCLUSIONS Although the pathophysiological meaning of LAIR is not completely elucidated, the presence of increased concentration of LAIR proteins can somehow modulate the cascade of inflammatory phenomenon occurring in bullous skin diseases, in different way depending upon specific skin disease considered.
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Affiliation(s)
- Manuela Marchiano
- DIMI, University of Genoa, Genoa, Italy
- Laboratory of Autoimmunology, IRCCS San Martino University Hospital, Genoa, Italy
| | - Erika Iervasi
- Laboratory of Autoimmunology, IRCCS San Martino University Hospital, Genoa, Italy
- DiMeS, University of Genoa, Genoa, Italy
| | - Giampaola Pesce
- DIMI, University of Genoa, Genoa, Italy
- Laboratory of Autoimmunology, IRCCS San Martino University Hospital, Genoa, Italy
| | - Margarita Rumbullaku
- DIMI, University of Genoa, Genoa, Italy
- Laboratory of Autoimmunology, IRCCS San Martino University Hospital, Genoa, Italy
| | - Caterina Foti
- Department of Biomedical Sciences and Human Oncology, Clinical Pathology Laboratory, Polyclinic of Bari, University of Bari, Bari, Italy
| | - Ruggiero Fumarulo
- Unit of Dermatology, Department of Biomedical Science and Human Oncology, University of Bari, Bari, Italy
| | - Aurora Parodi
- Department of Health Sciences (DISSAL), University of Genoa, Genoa, Italy
| | | | - Marilina Tampoia
- Department of Biomedical Sciences and Human Oncology, Clinical Pathology Laboratory, Polyclinic of Bari, University of Bari, Bari, Italy
| | - Daniele Saverino
- Laboratory of Autoimmunology, IRCCS San Martino University Hospital, Genoa, Italy -
- DiMeS, University of Genoa, Genoa, Italy
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3
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Lima K, Ribas GT, Riella LV, Borges TJ. Inhibitory innate receptors and their potential role in transplantation. Transplant Rev (Orlando) 2023; 37:100776. [PMID: 37451057 DOI: 10.1016/j.trre.2023.100776] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 06/29/2023] [Accepted: 06/30/2023] [Indexed: 07/18/2023]
Abstract
The regulatory arm of the immune system plays a crucial role in maintaining immune tolerance and preventing excessive immune responses. Immune regulation comprises various regulatory cells and molecules that work together to suppress or regulate immune responses. The programmed cell death protein 1 (PD-1) and cytotoxic T lymphocyte-associated protein 4 (CTLA-4) are examples of inhibitory receptors that counteract activating signals and fine-tune immune responses. While most of the discoveries of immune regulation have been related to T cells and the adaptive immune system, the innate arm of the immune system also has a range of inhibitory receptors that can counteract activating signals and suppress the effector immune responses. Targeting these innate inhibitory receptors may provide a complementary therapeutic approach in several immune-related conditions, including transplantation. In this review, we will explore the potential role of innate inhibitory receptors in controlling alloimmunity during solid organ transplantation.
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Affiliation(s)
- Karina Lima
- Center for Transplantation Sciences, Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA; Departamento de Ciências Básicas da Saúde, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, RS, Brazil
| | - Guilherme T Ribas
- Center for Transplantation Sciences, Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA; Professional and Technological Education Sector, Federal University of Paraná, Curitiba, Paraná, Brazil
| | - Leonardo V Riella
- Center for Transplantation Sciences, Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA; Division of Nephrology, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Thiago J Borges
- Center for Transplantation Sciences, Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.
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4
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Wang J, Soliman AM, Norlin J, Barreda DR, Stafford JL. Expression analysis of Carassius auratus-leukocyte-immune-type receptors (CaLITRs) during goldfish kidney macrophage development and in activated kidney leukocyte cultures. Immunogenetics 2023; 75:171-189. [PMID: 36806761 DOI: 10.1007/s00251-023-01298-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Accepted: 02/08/2023] [Indexed: 02/21/2023]
Abstract
Carassius auratus leukocyte immune-type receptors (CaLITRs) were recently discovered immunoregulatory receptors in goldfish that have diverse immunoglobulin-like (Ig-like) ectodomains and intracellular signaling motifs. Genomic analysis shows that CaLITR-types are also located as distinct gene clusters across multiple goldfish chromosomes. For example, CaLITR1 (unplaced) is a functionally ambiguous receptor having two Ig-like domains, a transmembrane domain (TM), and a short cytoplasmic tail (CYT) devoid of any recognizable signaling motifs. CaLITR2 (Chr47) is a putative inhibitory receptor containing four Ig-like domains, a TM, and a long CYT with an immunoreceptor tyrosine-based inhibition motif (ITIM) and immunoreceptor tyrosine-based switch motif (ITSM). A putative activating receptor-type, CaLITR3 (Chr3), has four Ig-like domains, a TM, and a short CYT containing a positively charged histidine residue and CaLITR4 (ChrLG28B) is a receptor with putative multifunctional signaling potential as well as five Ig-like domains, a TM, and a long tyrosine-motif containing CYT region. The variable genomic locations of the CaLITRs suggest that they are likely under the influence of different cis- and/or trans-regulatory elements. To better understand the transcriptional activities of select CaLITRs from variable genomic regions, we used an RT-qPCR-based approach to examine the expression of CaLITR1, CaLITR2, CaLITR3, and CaLITR4 during goldfish primary kidney macrophage (PKM) development and in mixed leukocyte reaction cultures (MLRs) of the goldfish. Our results showed that the select CaLITRs are differentially expressed during PKM development and in goldfish MLRs exposed to T-cell mitogens/immunosuppressive drugs, supporting that the transcription of these CaLITRs is likely regulated by distinct cis- and/or trans-regulatory elements.
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Affiliation(s)
- Jiahui Wang
- Department of Biological Sciences, University of Alberta, CW 405 Biological Sciences Building, Edmonton, AB, T6G 2E9, Canada
| | - Amro M Soliman
- Department of Biological Sciences, University of Alberta, CW 405 Biological Sciences Building, Edmonton, AB, T6G 2E9, Canada
| | - Jeff Norlin
- Department of Biological Sciences, University of Alberta, CW 405 Biological Sciences Building, Edmonton, AB, T6G 2E9, Canada
| | - Daniel R Barreda
- Department of Biological Sciences, University of Alberta, CW 405 Biological Sciences Building, Edmonton, AB, T6G 2E9, Canada
| | - James L Stafford
- Department of Biological Sciences, University of Alberta, CW 405 Biological Sciences Building, Edmonton, AB, T6G 2E9, Canada.
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5
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Van Laethem F, Donaty L, Tchernonog E, Lacheretz-Szablewski V, Russello J, Buthiau D, Almeras M, Moreaux J, Bret C. LAIR1, an ITIM-Containing Receptor Involved in Immune Disorders and in Hematological Neoplasms. Int J Mol Sci 2022; 23:ijms232416136. [PMID: 36555775 PMCID: PMC9788452 DOI: 10.3390/ijms232416136] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Revised: 12/11/2022] [Accepted: 12/12/2022] [Indexed: 12/23/2022] Open
Abstract
Leukocyte-associated immunoglobulin (Ig)-like receptor 1 (LAIR1, CD305) belongs to the family of immune-inhibitory receptors and is widely expressed on hematopoietic mature cells, particularly on immune cells. Four different types of ligands of LAIR1 have been described, including collagens, suggesting a potential immune-regulatory function on the extracellular matrix. By modulating cytokine secretion and cellular functions, LAIR1 displays distinct patterns of expression among NK cell and T/B lymphocyte subsets during their differentiation and cellular activation and plays a major negative immunoregulatory role. Beyond its implications in physiology, the activity of LAIR1 can be inappropriately involved in various autoimmune or inflammatory disorders and has been implicated in cancer physiopathology, including hematological neoplasms. Its action as an inhibitory receptor can result in the dysregulation of immune cellular responses and in immune escape within the tumor microenvironment. Furthermore, when expressed by tumor cells, LAIR1 can modulate their proliferation or invasion properties, with contradictory pro- or anti-tumoral effects depending on tumor type. In this review, we will focus on its role in normal physiological conditions, as well as during pathological situations, including hematological malignancies. We will also discuss potential therapeutic strategies targeting LAIR1 for the treatment of various autoimmune diseases and cancer settings.
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Affiliation(s)
| | - Lucie Donaty
- Department of Biological Hematology, CHU Montpellier, 34295 Montpellier, France
| | | | - Vanessa Lacheretz-Szablewski
- Department of Biopathology, CHU Montpellier, 34295 Montpellier, France
- Faculty of Medicine, University of Montpellier, 34090 Montpellier, France
| | - Jennifer Russello
- Department of Biological Hematology, CHU Montpellier, 34295 Montpellier, France
| | | | | | - Jérôme Moreaux
- Department of Biological Hematology, CHU Montpellier, 34295 Montpellier, France
- Faculty of Medicine, University of Montpellier, 34090 Montpellier, France
- Institute of Human Genetics, UMR 9002 CNRS-UM, 34396 Montpellier, France
- Institut Universitaire de France (IUF), 75005 Paris, France
| | - Caroline Bret
- Department of Biological Hematology, CHU Montpellier, 34295 Montpellier, France
- Faculty of Medicine, University of Montpellier, 34090 Montpellier, France
- Institute of Human Genetics, UMR 9002 CNRS-UM, 34396 Montpellier, France
- Correspondence: ; Tel.: +33-0467-337-031
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6
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Ramos MIP, Tian L, de Ruiter EJ, Song C, Paucarmayta A, Singh A, Elshof E, Vijver SV, Shaik J, Bosiacki J, Cusumano Z, Jensen C, Willumsen N, Karsdal MA, Liu L, Langermann S, Willems S, Flies D, Meyaard L. Cancer immunotherapy by NC410, a LAIR-2 Fc protein blocking human LAIR-collagen interaction. eLife 2021; 10:62927. [PMID: 34121658 PMCID: PMC8225389 DOI: 10.7554/elife.62927] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Accepted: 06/11/2021] [Indexed: 12/25/2022] Open
Abstract
Collagens are a primary component of the extracellular matrix and are functional ligands for the inhibitory immune receptor leukocyte-associated immunoglobulin-like receptor (LAIR)-1. LAIR-2 is a secreted protein that can act as a decoy receptor by binding collagen with higher affinity than LAIR-1. We propose that collagens promote immune evasion by interacting with LAIR-1 expressed on immune cells, and that LAIR-2 releases LAIR-1-mediated immune suppression. Analysis of public human datasets shows that collagens, LAIR-1 and LAIR-2 have unique and overlapping associations with survival in certain tumors. We designed a dimeric LAIR-2 with a functional IgG1 Fc tail, NC410, and showed that NC410 increases human T cell expansion and effector function in vivo in a mouse xenogeneic-graft versus-host disease model. In humanized mouse tumor models, NC410 reduces tumor growth that is dependent on T cells. Immunohistochemical analysis of human tumors shows that NC410 binds to collagen-rich areas where LAIR-1+ immune cells are localized. Our findings show that NC410 might be a novel strategy for cancer immunotherapy for immune-excluded tumors.
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Affiliation(s)
- M Ines Pascoal Ramos
- Center for Translational Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands.,Oncode Institute, Utrecht, Netherlands
| | | | | | | | | | - Akashdip Singh
- Center for Translational Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands.,Oncode Institute, Utrecht, Netherlands
| | - Eline Elshof
- Center for Translational Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands.,Oncode Institute, Utrecht, Netherlands
| | - Saskia V Vijver
- Center for Translational Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands.,Oncode Institute, Utrecht, Netherlands
| | | | | | | | | | | | | | | | | | - Stefan Willems
- Department of Pathology, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands
| | | | - Linde Meyaard
- Center for Translational Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands.,Oncode Institute, Utrecht, Netherlands
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7
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Liu Y, Ma L, Shangguan F, Zhao X, Wang W, Gao Z, Zhou H, Qu G, Huang Y, An J, Xue J, Yang S, Cao Q. LAIR-1 suppresses cell growth of ovarian cancer cell via the PI3K-AKT-mTOR pathway. Aging (Albany NY) 2021; 12:16142-16154. [PMID: 32628130 PMCID: PMC7485720 DOI: 10.18632/aging.103589] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Accepted: 06/13/2020] [Indexed: 12/25/2022]
Abstract
Recently, over-expression of LAIR-1 has been found in some solid cancers, including ovarian cancer. The role of LAIR-1 in cancer progression needs further investigation. In this study, we identified the LAIR-1 cDNA sequence of the ovarian cancer cells HO8910. Using SKOV3 cells, we confirmed the finding from our previous study that LAIR-1 could suppress in vitro cell proliferation and cell migration. We also found LAIR-1 overexpression can induce apoptosis of SKOV3 cells. We revealed LAIR-1 suppressed cell growth by inhibiting the PI3K-AKT-mTOR axis. Moreover, the LAIR-1 antitumor activity and its mechanism were also identified in vivo. We used Co-IP assay and mass spectrometry to identify potential LAIR-1-binding proteins in LAIR-1 overexpressing SKOV3 cells. MS analysis identified 167 potentially interacting proteins. GO analyses indicated a possible involvement of LAIR-1 in mRNA processing through its interaction with some eukaryotic translation initiation factors (eIF4E1B, eIF2S3, eIF3D, eIF4G2, eIF5B) and eukaryotic translation elongation factors (eEF1A2 and eEF1B2). Our findings suggest that LAIR-1 may suppress the growth of ovarian cancer cells by serving as a modulator that suppresses PI3K-AKT-mTOR directly or regulating protein synthesis at the translational level. Our results indicate that a LAIR-1-based strategy may prevent or suppress the progression of ovarian cancer.
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Affiliation(s)
- Yan Liu
- Department of Immunology, School of Basic Medical Sciences, Binzhou Medical University, Yantai 264003, Shandong, P.R. China.,Equal contribution
| | - Li Ma
- Department of Immunology, School of Basic Medical Sciences, Binzhou Medical University, Yantai 264003, Shandong, P.R. China.,Equal contribution
| | - Fugen Shangguan
- Key Laboratory of Diagnosis and Treatment of Severe Hepato-Pancreatic Diseases of Zhejiang Province, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, P.R. China.,Equal contribution
| | - Xuena Zhao
- Binzhou Medical University, Yantai 264003, Shandong, P.R. China
| | - Wenjie Wang
- Binzhou Medical University, Yantai 264003, Shandong, P.R. China
| | - Zhiyue Gao
- Binzhou Medical University, Yantai 264003, Shandong, P.R. China
| | - Huimin Zhou
- Binzhou Medical University, Yantai 264003, Shandong, P.R. China
| | - Guiwu Qu
- Anti-aging Research Institution, Binzhou Medical University, Yantai 264003, Shandong, P.R.China
| | - Yumei Huang
- Department of Stomatology, Affiliated Hospital of Binzhou Medical College, Binzhou 256603, Shandong, P.R. China
| | - Jing An
- Division of Infectious Diseases and Global Health, School of Medicine, University of California at San Diego, La Jolla, CA 92037, USA
| | - Jiangnan Xue
- Department of Immunology, School of Basic Medical Sciences, Binzhou Medical University, Yantai 264003, Shandong, P.R. China
| | - Shude Yang
- School of Agriculture, Ludong University, Yantai 264025, Shandong, P.R.China
| | - Qizhi Cao
- Department of Immunology, School of Basic Medical Sciences, Binzhou Medical University, Yantai 264003, Shandong, P.R. China.,Anti-aging Research Institution, Binzhou Medical University, Yantai 264003, Shandong, P.R.China
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8
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McQuitty CE, Williams R, Chokshi S, Urbani L. Immunomodulatory Role of the Extracellular Matrix Within the Liver Disease Microenvironment. Front Immunol 2020; 11:574276. [PMID: 33262757 PMCID: PMC7686550 DOI: 10.3389/fimmu.2020.574276] [Citation(s) in RCA: 68] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Accepted: 10/14/2020] [Indexed: 12/12/2022] Open
Abstract
Chronic liver disease when accompanied by underlying fibrosis, is characterized by an accumulation of extracellular matrix (ECM) proteins and chronic inflammation. Although traditionally considered as a passive and largely architectural structure, the ECM is now being recognized as a source of potent damage-associated molecular pattern (DAMP)s with immune-active peptides and domains. In parallel, the ECM anchors a range of cytokines, chemokines and growth factors, all of which are capable of modulating immune responses. A growing body of evidence shows that ECM proteins themselves are capable of modulating immunity either directly via ligation with immune cell receptors including integrins and TLRs, or indirectly through release of immunoactive molecules such as cytokines which are stored within the ECM structure. Notably, ECM deposition and remodeling during injury and fibrosis can result in release or formation of ECM-DAMPs within the tissue, which can promote local inflammatory immune response and chemotactic immune cell recruitment and inflammation. It is well described that the ECM and immune response are interlinked and mutually participate in driving fibrosis, although their precise interactions in the context of chronic liver disease are poorly understood. This review aims to describe the known pro-/anti-inflammatory and fibrogenic properties of ECM proteins and DAMPs, with particular reference to the immunomodulatory properties of the ECM in the context of chronic liver disease. Finally, we discuss the importance of developing novel biotechnological platforms based on decellularized ECM-scaffolds, which provide opportunities to directly explore liver ECM-immune cell interactions in greater detail.
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Affiliation(s)
- Claire E. McQuitty
- Institute of Hepatology, Foundation for Liver Research, London, United Kingdom
- Faculty of Life Sciences & Medicine, King’s College London, London, United Kingdom
| | - Roger Williams
- Institute of Hepatology, Foundation for Liver Research, London, United Kingdom
- Faculty of Life Sciences & Medicine, King’s College London, London, United Kingdom
| | - Shilpa Chokshi
- Institute of Hepatology, Foundation for Liver Research, London, United Kingdom
- Faculty of Life Sciences & Medicine, King’s College London, London, United Kingdom
| | - Luca Urbani
- Institute of Hepatology, Foundation for Liver Research, London, United Kingdom
- Faculty of Life Sciences & Medicine, King’s College London, London, United Kingdom
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9
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Sivori S, Della Chiesa M, Carlomagno S, Quatrini L, Munari E, Vacca P, Tumino N, Mariotti FR, Mingari MC, Pende D, Moretta L. Inhibitory Receptors and Checkpoints in Human NK Cells, Implications for the Immunotherapy of Cancer. Front Immunol 2020; 11:2156. [PMID: 33013909 PMCID: PMC7494755 DOI: 10.3389/fimmu.2020.02156] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Accepted: 08/07/2020] [Indexed: 12/30/2022] Open
Abstract
The highly destructive mechanisms by which the immune system faces microbial infections is under the control of a series of inhibitory receptors. While most of these receptors prevent unwanted/excessive responses of individual effector cells, others play a more general role in immunity, acting as true inhibitory checkpoints controlling both innate and adaptive immunity. Regarding human NK cells, their function is finely regulated by HLA-class I-specific inhibitory receptors which allow discrimination between HLA-I+, healthy cells and tumor or virus-infected cells displaying loss or substantial alterations of HLA-I molecules, including allelic losses that are sensed by KIRs. A number of non-HLA-specific receptors have been identified which recognize cell surface or extracellular matrix ligands and may contribute to the physiologic control of immune responses and tolerance. Among these receptors, Siglec 7 (p75/AIRM-1), LAIR-1 and IRp60, recognize ligands including sialic acids, extracellular matrix/collagen or aminophospholipids, respectively. These ligands may be expressed at the surface of tumor cells, thus inhibiting NK cell function. Expression of the PD-1 checkpoint by NK cells requires particular cytokines (IL-15, IL-12, IL-18) together with cortisol, a combination that may occur in the microenvironment of different tumors. Blocking of single or combinations of inhibitory receptors unleashes NK cells and restore their anti-tumor activity, with obvious implications for tumor immunotherapy.
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Affiliation(s)
- Simona Sivori
- Department of Experimental Medicine (DIMES) and Center of Excellence for Biomedical Research, University of Genoa, Genoa, Italy
| | - Mariella Della Chiesa
- Department of Experimental Medicine (DIMES) and Center of Excellence for Biomedical Research, University of Genoa, Genoa, Italy
| | - Simona Carlomagno
- Department of Experimental Medicine, University of Genoa, Genoa, Italy
| | - Linda Quatrini
- Department of Immunology, IRCCS Ospedale Pediatrico Bambino Gesù, Rome, Italy
| | - Enrico Munari
- Department of Pathology, IRCCS Sacro Cuore Don Calabria, Negrar, Italy
| | - Paola Vacca
- Department of Immunology, IRCCS Ospedale Pediatrico Bambino Gesù, Rome, Italy
| | - Nicola Tumino
- Department of Immunology, IRCCS Ospedale Pediatrico Bambino Gesù, Rome, Italy
| | | | - Maria Cristina Mingari
- Department of Experimental Medicine (DIMES) and Center of Excellence for Biomedical Research, University of Genoa, Genoa, Italy.,UOC Immunology, IRCCS Ospedale Policlinico San Martino, Genoa, Italy
| | - Daniela Pende
- UOC Immunology, IRCCS Ospedale Policlinico San Martino, Genoa, Italy
| | - Lorenzo Moretta
- Department of Immunology, IRCCS Ospedale Pediatrico Bambino Gesù, Rome, Italy
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10
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Carvalheiro T, Garcia S, Pascoal Ramos MI, Giovannone B, Radstake TRDJ, Marut W, Meyaard L. Leukocyte Associated Immunoglobulin Like Receptor 1 Regulation and Function on Monocytes and Dendritic Cells During Inflammation. Front Immunol 2020; 11:1793. [PMID: 32973751 PMCID: PMC7466540 DOI: 10.3389/fimmu.2020.01793] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Accepted: 07/06/2020] [Indexed: 12/30/2022] Open
Abstract
Inhibitory receptors are crucial immune regulators and are essential to prevent exacerbated responses, thus contributing to immune homeostasis. Leukocyte associated immunoglobulin like receptor 1 (LAIR-1) is an immune inhibitory receptor which has collagen and collagen domain containing proteins as ligands. LAIR-1 is broadly expressed on immune cells and has a large availability of ligands in both circulation and tissues, implicating a need for tight regulation of this interaction. In the current study, we sought to examine the regulation and function of LAIR-1 on monocyte, dendritic cell (DC) and macrophage subtypes, using different in vitro models. We found that LAIR-1 is highly expressed on intermediate monocytes as well as on plasmacytoid DCs. LAIR-1 is also expressed on skin immune cells, mainly on tissue CD14+ cells, macrophages and CD1c+ DCs. In vitro, monocyte and type-2 conventional DC stimulation leads to LAIR-1 upregulation, which may reflect the importance of LAIR-1 as negative regulator under inflammatory conditions. Indeed, we demonstrate that LAIR-1 ligation on monocytes inhibits toll like receptor (TLR)4 and Interferon (IFN)-α- induced signals. Furthermore, LAIR-1 is downregulated on GM-CSF and IFN-γ monocyte-derived macrophages and monocyte-derived DCs. In addition, LAIR-1 triggering during monocyte derived-DC differentiation results in significant phenotypic changes, as well as a different response to TLR4 and IFN-α stimulation. This indicates a role for LAIR-1 in skewing DC function, which impacts the cytokine expression profile of these cells. In conclusion, we demonstrate that LAIR-1 is consistently upregulated on monocytes and DC during the inflammatory phase of the immune response and tends to restore its expression during the resolution phase. Under inflammatory conditions, LAIR-1 has an inhibitory function, pointing toward to a potential intervention opportunity targeting LAIR-1 in inflammatory conditions.
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Affiliation(s)
- Tiago Carvalheiro
- Center for Translational Immunology, University Medical Center Utrecht, University of Utrecht, Utrecht, Netherlands.,Department of Rheumatology & Clinical Immunology, University Medical Center Utrecht, University of Utrecht, Utrecht, Netherlands
| | - Samuel Garcia
- Center for Translational Immunology, University Medical Center Utrecht, University of Utrecht, Utrecht, Netherlands.,Department of Rheumatology & Clinical Immunology, University Medical Center Utrecht, University of Utrecht, Utrecht, Netherlands.,Rheumatology & Immuno-Mediated Diseases Research Group (IRIDIS), Galicia Sur Health Research Institute (IIS Galicia Sur), SERGAS-UVIGO, Vigo, Spain.,Rheumatology Department, University Hospital Complex of Vigo, Vigo, Spain
| | - M Inês Pascoal Ramos
- Center for Translational Immunology, University Medical Center Utrecht, University of Utrecht, Utrecht, Netherlands.,Oncode Institute, Utrecht, Netherlands
| | - Barbara Giovannone
- Center for Translational Immunology, University Medical Center Utrecht, University of Utrecht, Utrecht, Netherlands.,Department of Dermatology, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands
| | - Timothy R D J Radstake
- Center for Translational Immunology, University Medical Center Utrecht, University of Utrecht, Utrecht, Netherlands.,Department of Rheumatology & Clinical Immunology, University Medical Center Utrecht, University of Utrecht, Utrecht, Netherlands
| | - Wioleta Marut
- Center for Translational Immunology, University Medical Center Utrecht, University of Utrecht, Utrecht, Netherlands.,Department of Rheumatology & Clinical Immunology, University Medical Center Utrecht, University of Utrecht, Utrecht, Netherlands
| | - Linde Meyaard
- Center for Translational Immunology, University Medical Center Utrecht, University of Utrecht, Utrecht, Netherlands.,Oncode Institute, Utrecht, Netherlands
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11
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Guo N, Zhang K, Gao X, Lv M, Luan J, Hu Z, Li A, Gou X. Role and mechanism of LAIR-1 in the development of autoimmune diseases, tumors, and malaria: A review. Curr Res Transl Med 2020; 68:119-124. [DOI: 10.1016/j.retram.2020.05.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 04/23/2020] [Accepted: 05/17/2020] [Indexed: 02/08/2023]
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12
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Xu L, Wang S, Li J, Li J, Li B. Cancer immunotherapy based on blocking immune suppression mediated by an immune modulator LAIR-1. Oncoimmunology 2020; 9:1740477. [PMID: 33457088 PMCID: PMC7790510 DOI: 10.1080/2162402x.2020.1740477] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
The leukocyte-associated immunoglobulin-like receptor 1 (LAIR-1) is an inhibitory receptor expressed on the majority of peripheral blood mononuclear cells and is important for the regulation of immune responses. The binding of LAIR-1 to its ligands results in the loss of immune function in the tumor microenvironment (TME) and a reduction in T cell function and immune responses of antigen-presenting cells. Using bioinformatics analysis, we showed that LAIR-1 is broadly upregulated in multiple types of cancer. By designing a LAIR-2-Fc recombinant protein to block the binding of LAIR-1 to its ligand collagen, we observed augmented cytotoxic T cell infiltration and function resulting in antitumor immune responses that eliminated cancer cells. Besides, LAIR-2-Fc fusion protein potentiated the antitumor effect of PD-1/L1 checkpoint blockade therapy. Collectively, our results support the targeting of LAIR-1 for potential immunotherapeutic applications.
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Affiliation(s)
- Lijun Xu
- College of Medical, Henan University of Science and Technology, Luoyang, Henan, China
| | - Shanlong Wang
- Department of Clinical Laboratory, The Second Affiliated Hospital of Henan University of Science and Technology, Luoyang, Henan, China
| | - Jufeng Li
- Department of Clinical Laboratory, The Second Affiliated Hospital of Henan University of Science and Technology, Luoyang, Henan, China
| | - Jie Li
- Department of Clinical Laboratory, The Second Affiliated Hospital of Henan University of Science and Technology, Luoyang, Henan, China
| | - Bingyu Li
- College of Medical, Henan University of Science and Technology, Luoyang, Henan, China
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13
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Hoop CL, Zhu J, Bhattacharya S, Tobita CA, Radford SE, Baum J. Collagen I Weakly Interacts with the β-Sheets of β 2-Microglobulin and Enhances Conformational Exchange To Induce Amyloid Formation. J Am Chem Soc 2020; 142:1321-1331. [PMID: 31875390 PMCID: PMC7135851 DOI: 10.1021/jacs.9b10421] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
![]()
Amyloidogenesis is
significant in both protein function and pathology.
Amyloid formation of folded, globular proteins is commonly initiated
by partial or complete unfolding. However, how this unfolding event
is triggered for proteins that are otherwise stable in their native
environments is not well understood. The accumulation of the immunoglobulin
protein β2-microglobulin (β2m) into
amyloid plaques in the joints of long-term hemodialysis patients is
the hallmark of dialysis-related amyloidosis (DRA). While β2m does not form amyloid unassisted near neutral pH in vitro, the localization of β2m deposits
to joint spaces suggests a role for the local extracellular matrix
(ECM) proteins, specifically collagens, in promoting amyloid formation.
Indeed, collagen and other ECM components have been observed to facilitate
β2m amyloid formation, but the large size and anisotropy
of the complex, combined with the low affinity of these interactions,
have limited atomic-level elucidation of the amyloid-promoting mechanism(s)
by these molecules. Using solution NMR approaches that uniquely probe
weak interactions in large molecular weight complexes, we are able
to map the binding interfaces on β2m for collagen
I and detect collagen I-induced μs–ms time-scale dynamics
in the β2m backbone. By combining solution NMR relaxation
methods and 15N-dark-state exchange saturation transfer
experiments, we propose a model in which weak, multimodal collagen
I−β2m interactions promote exchange with a
minor population of amyloid-competent species to induce fibrillogenesis.
The results portray the intimate role of the environment in switching
an innocuous protein into an amyloid-competent state, rationalizing
the localization of amyloid deposits in DRA.
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Affiliation(s)
- Cody L Hoop
- Department of Chemistry and Chemical Biology , Rutgers University , Piscataway , New Jersey 08854 , United States
| | - Jie Zhu
- Department of Chemistry and Chemical Biology , Rutgers University , Piscataway , New Jersey 08854 , United States
| | | | - Caitlyn A Tobita
- Department of Chemistry and Chemical Biology , Rutgers University , Piscataway , New Jersey 08854 , United States
| | - Sheena E Radford
- Astbury Centre for Structural Molecular Biology and School of Molecular and Cellular Biology, Faculty of Biological Sciences , University of Leeds , Leeds LS2 9JT , U.K
| | - Jean Baum
- Department of Chemistry and Chemical Biology , Rutgers University , Piscataway , New Jersey 08854 , United States
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14
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Lu KL, Wu MY, Wang CH, Wang CW, Hung SI, Chung WH, Chen CB. The Role of Immune Checkpoint Receptors in Regulating Immune Reactivity in Lupus. Cells 2019; 8:E1213. [PMID: 31597242 PMCID: PMC6829486 DOI: 10.3390/cells8101213] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2019] [Revised: 09/29/2019] [Accepted: 10/03/2019] [Indexed: 12/26/2022] Open
Abstract
Immune checkpoint receptors with co-stimulatory and co-inhibitory signals are important modulators for the immune system. However, unrestricted co-stimulation and/or inadequate co-inhibition may cause breakdown of self-tolerance, leading to autoimmunity. Systemic lupus erythematosus (SLE) is a complex multi-organ disease with skewed and dysregulated immune responses interacting with genetics and the environment. The close connections between co-signaling pathways and SLE have gradually been established in past research. Also, the recent success of immune checkpoint blockade in cancer therapy illustrates the importance of the co-inhibitory receptors in cancer immunotherapy. Moreover, immune checkpoint blockade could result in substantial immune-related adverse events that mimic autoimmune diseases, including lupus. Together, immune checkpoint regulators represent viable immunotherapeutic targets for the treatment of both autoimmunity and cancer. Therefore, it appears reasonable to treat SLE by restoring the out-of-order co-signaling axis or by manipulating collateral pathways to control the pathogenic immune responses. Here, we review the current state of knowledge regarding the relationships between SLE and the co-signaling pathways of T cells, B cells, dendritic cells, and neutrophils, and highlight their potential clinical implications. Current clinical trials targeting the specific co-signaling axes involved in SLE help to advance such knowledge, but further in-depth exploration is still warranted.
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Affiliation(s)
- Kun-Lin Lu
- Chang Gung Memorial Hospital, Linkou 333, Taiwan; (K.-L.L.); (M.-Y.W.); , (C.-W.W.); (S.-I.H.)
- College of Medicine, Chang Gung University, Kwei-Shan, Taoyuan 333, Taiwan
| | - Ming-Ying Wu
- Chang Gung Memorial Hospital, Linkou 333, Taiwan; (K.-L.L.); (M.-Y.W.); , (C.-W.W.); (S.-I.H.)
- College of Medicine, Chang Gung University, Kwei-Shan, Taoyuan 333, Taiwan
- Department of Dermatology, Drug Hypersensitivity Clinical and Research Center, Chang Gung Memorial Hospital, Taipei 105, Taiwan
| | - Chi-Hui Wang
- Chang Gung Memorial Hospital, Linkou 333, Taiwan; (K.-L.L.); (M.-Y.W.); , (C.-W.W.); (S.-I.H.)
- College of Medicine, Chang Gung University, Kwei-Shan, Taoyuan 333, Taiwan
- Department of Dermatology, Drug Hypersensitivity Clinical and Research Center, Chang Gung Memorial Hospital, Taipei 105, Taiwan
| | - Chuang-Wei Wang
- Chang Gung Memorial Hospital, Linkou 333, Taiwan; (K.-L.L.); (M.-Y.W.); , (C.-W.W.); (S.-I.H.)
- College of Medicine, Chang Gung University, Kwei-Shan, Taoyuan 333, Taiwan
- Department of Dermatology, Drug Hypersensitivity Clinical and Research Center, Chang Gung Memorial Hospital, Taipei 105, Taiwan
- Cancer Vaccine and Immune Cell Therapy Core Laboratory, Chang Gung Immunology Consortium, Chang Gung Memorial Hospital, Linkou 333, Taiwan
| | - Shuen-Iu Hung
- Chang Gung Memorial Hospital, Linkou 333, Taiwan; (K.-L.L.); (M.-Y.W.); , (C.-W.W.); (S.-I.H.)
- College of Medicine, Chang Gung University, Kwei-Shan, Taoyuan 333, Taiwan
- Department of Dermatology, Drug Hypersensitivity Clinical and Research Center, Chang Gung Memorial Hospital, Taipei 105, Taiwan
- Cancer Vaccine and Immune Cell Therapy Core Laboratory, Chang Gung Immunology Consortium, Chang Gung Memorial Hospital, Linkou 333, Taiwan
| | - Wen-Hung Chung
- Chang Gung Memorial Hospital, Linkou 333, Taiwan; (K.-L.L.); (M.-Y.W.); , (C.-W.W.); (S.-I.H.)
- College of Medicine, Chang Gung University, Kwei-Shan, Taoyuan 333, Taiwan
- Department of Dermatology, Drug Hypersensitivity Clinical and Research Center, Chang Gung Memorial Hospital, Taipei 105, Taiwan
- Cancer Vaccine and Immune Cell Therapy Core Laboratory, Chang Gung Immunology Consortium, Chang Gung Memorial Hospital, Linkou 333, Taiwan
- Whole-Genome Research Core Laboratory of Human Diseases, Chang Gung Memorial Hospital, Keelung 204, Taiwan
- Immune-Oncology Center of Excellence, Chang Gung Memorial Hospital, Linkou 333, Taiwan
- Department of Dermatology, Xiamen Chang Gung Hospital, Xiamen 361000, China
- Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Kwei-Shan, Taoyuan 333, Taiwan
| | - Chun-Bing Chen
- Chang Gung Memorial Hospital, Linkou 333, Taiwan; (K.-L.L.); (M.-Y.W.); , (C.-W.W.); (S.-I.H.)
- College of Medicine, Chang Gung University, Kwei-Shan, Taoyuan 333, Taiwan
- Department of Dermatology, Drug Hypersensitivity Clinical and Research Center, Chang Gung Memorial Hospital, Taipei 105, Taiwan
- Cancer Vaccine and Immune Cell Therapy Core Laboratory, Chang Gung Immunology Consortium, Chang Gung Memorial Hospital, Linkou 333, Taiwan
- Whole-Genome Research Core Laboratory of Human Diseases, Chang Gung Memorial Hospital, Keelung 204, Taiwan
- Immune-Oncology Center of Excellence, Chang Gung Memorial Hospital, Linkou 333, Taiwan
- Department of Dermatology, Xiamen Chang Gung Hospital, Xiamen 361000, China
- Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Kwei-Shan, Taoyuan 333, Taiwan
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15
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Cao Q, Yang S, Lv Q, Liu Y, Li L, Wu X, Qu G, He X, Zhang X, Sun S, Li B, An J, Hu T, Xue J. Five ETS family members, ELF-1, ETV-4, ETV-3L, ETS-1, and ETS-2 upregulate human leukocyte-associated immunoglobulin-like receptor-1 gene basic promoter activity. Aging (Albany NY) 2019; 10:1390-1401. [PMID: 29915163 PMCID: PMC6046229 DOI: 10.18632/aging.101475] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2017] [Accepted: 06/10/2018] [Indexed: 12/14/2022]
Abstract
Human leukocyte-associated immunoglobulin-like receptor-1 (LAIR-1), an immunoinhibitory receptor, is expressed on most types of hematopoietic cells and some tumor cells. LAIR-1 plays an inhibitory role in immune cell maturation, differentiation, and activation. LAIR-1 is also involved in some autoimmune diseases and tumors. However, the mechanism controlling the regulation of the LAIR-1 gene is still unknown. In order to elucidate the molecular mechanisms involved in LAIR-1 regulation, in the present study, we cloned and characterized the promoter region of LAIR-1 gene using a series of truncated promoter plasmids in luciferase reporter assays. Our results show that the basic core promoter of LAIR-1 is located within the region -256/-8 relative to the translational start site. Our further studies indicate that five ETS transcription factors: ELF-1, ETV-4, ETV-3L, ETS-1 and ETS-2, can up-regulate the LAIR-1 basic promoter activity. Of these, ETS-2 is the most effective transcription factor. Moreover, ETS-2 was confirmed to interact directly with the basic promoter of LAIR-1. This study presents the first description of regions/factors capable of up-regulation the promoter activity of LAIR-1. This new knowledge contributes to understanding of the molecular mechanisms involved in LAIR-1 associated immune regulation and diseases.
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Affiliation(s)
- Qizhi Cao
- Department of Immunology, School of Basic Medical Sciences, Binzhou Medical University, Shandong 264003, China.,Anti-aging Research Institution, Binzhou Medical University, Shandong 264003, China
| | - Shude Yang
- School of Agriculture, Ludong University, Shandong 264003, China
| | - Qing Lv
- Anti-aging Research Institution, Binzhou Medical University, Shandong 264003, China.,School of Gerontology, Binzhou Medical University, Shandong 264003, China
| | - Yan Liu
- Department of Immunology, School of Basic Medical Sciences, Binzhou Medical University, Shandong 264003, China
| | - Li Li
- Beijing Key Laboratory of Drug Target and Screening Research, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Xiaojie Wu
- Department of Immunology, School of Basic Medical Sciences, Binzhou Medical University, Shandong 264003, China
| | - Guiwu Qu
- Anti-aging Research Institution, Binzhou Medical University, Shandong 264003, China.,School of Gerontology, Binzhou Medical University, Shandong 264003, China
| | - Xiaoli He
- The People's Liberation Army 107 Hospital, Affiliated Hospital of Bin Zhou Medical University, Yantai 264002, China
| | - Xiaoshu Zhang
- Department of Immunology, School of Basic Medical Sciences, Binzhou Medical University, Shandong 264003, China
| | - Shuqin Sun
- School of Gerontology, Binzhou Medical University, Shandong 264003, China
| | - Boqing Li
- Department of Microbiology, School of Basic Medical Sciences, Binzhou Medical University, Shandong 264003, China
| | - Jing An
- School of Medicine, University of California - San Diego, La Jolla, CA 92037, USA
| | - Tao Hu
- Department of Immunology, School of Basic Medical Sciences, Binzhou Medical University, Shandong 264003, China
| | - Jiangnan Xue
- Department of Immunology, School of Basic Medical Sciences, Binzhou Medical University, Shandong 264003, China
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16
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Achieng AO, Hengartner NW, Raballah E, Cheng Q, Anyona SB, Lauve N, Guyah B, Foo-Hurwitz I, Ong'echa JM, McMahon BH, Ouma C, Lambert CG, Perkins DJ. Integrated OMICS platforms identify LAIR1 genetic variants as novel predictors of cross-sectional and longitudinal susceptibility to severe malaria and all-cause mortality in Kenyan children. EBioMedicine 2019; 45:290-302. [PMID: 31278068 PMCID: PMC6642287 DOI: 10.1016/j.ebiom.2019.06.043] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Revised: 06/19/2019] [Accepted: 06/20/2019] [Indexed: 01/05/2023] Open
Abstract
Background Severe malarial anaemia (SMA) is a leading cause of childhood mortality in holoendemic Plasmodium falciparum regions. Methods To gain an improved understanding of SMA pathogenesis, whole genome and transcriptome profiling was performed in Kenyan children (n = 144, 3–36 months) with discrete non-SMA and SMA phenotypes. Leukocyte associated immunoglobulin like receptor 1 (LAIR1) emerged as a predictor of susceptibility to SMA (P < 1 × 10−2, OR: 0.44–1.37), and was suppressed in severe disease (−1.69-fold, P = 0.004). To extend these findings, the relationship between LAIR1 polymorphisms [rs6509867 (16231C>A); rs2287827 (18835G>A)] and clinical outcomes were investigated in individuals (n = 1512, <5 years) at enrolment and during a 36-month longitudinal follow-up. Findings Inheritance of the 16,231 recessive genotype (AA) increased susceptibility to SMA at enrolment (OR = 1.903, 95%CI: 1.252–2.891, P = 0.003), and longitudinally (RR = 1.527, 95%CI: 1.119–2.083, P = 0.008). Carriage of the 18,835 GA genotype protected against SMA cross-sectionally (OR = 0.672, 95%CI: 0.480–0.9439, P = 0.020). Haplotype carriage (C16231A/G18835A) also altered cross-sectional susceptibility to SMA: CG (OR = 0.717, 95%CI: 0.527–0.9675, P = 0.034), CA (OR = 0.745, 95%CI: 0.536–1.036, P = 0.080), and AG (OR = 1.641, 95%CI: 1.160–2.321, P = 0.005). Longitudinally, CA carriage was protective against SMA (RR = 0.715, 95%CI: 0.554–0.923, P = 0.010), while AG carriage had an additive effect on enhanced SMA risk (RR = 1.283, 95%CI: 1.057–1.557, P = 0.011). Variants that protected against SMA had elevated LAIR1 transcripts, while those with enhanced risk had lower expression (P < 0.05). Inheritance of 18,835 GA reduced all-cause mortality by 44.8% (HR = 0.552, 95%CI: 0.329–0.925, P = 0.024), while AG haplotype carriage increased susceptibility by 68% (HR = 1.680, 95%CI: 1.020–2.770, P = 0.040). Interpretation These findings suggest LAIR1 is important for modulating susceptibility to SMA and all-cause childhood mortality.
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Affiliation(s)
- Angela O Achieng
- University of New Mexico-Kenya Global Health Programs, Kisumu and Siaya, Kenya; Department of Biomedical Sciences and Technology, School of Public Health and Community Development, Maseno University, Maseno, Kenya
| | - Nicolas W Hengartner
- Theoretical Biology and Biophysics Group, Theoretical Division, Los Alamos National Laboratory, Los Alamos, NM, USA
| | - Evans Raballah
- University of New Mexico-Kenya Global Health Programs, Kisumu and Siaya, Kenya; Department of Medical Laboratory Sciences, School of Public Health Biomedical Sciences and Technology, Masinde Muliro University of Science and Technology, Kakamega, Kenya
| | - Qiuying Cheng
- University of New Mexico, Center for Global Health, Department of Internal Medicine, NM, USA
| | - Samuel B Anyona
- University of New Mexico-Kenya Global Health Programs, Kisumu and Siaya, Kenya; Department of Medical Biochemistry, School of Medicine, Maseno University, Maseno, Kenya
| | - Nick Lauve
- University of New Mexico, Center for Global Health, Department of Internal Medicine, NM, USA
| | - Bernard Guyah
- Department of Biomedical Sciences and Technology, School of Public Health and Community Development, Maseno University, Maseno, Kenya
| | - Ivy Foo-Hurwitz
- University of New Mexico, Center for Global Health, Department of Internal Medicine, NM, USA
| | - John M Ong'echa
- Kenya Medical Research Institute, Centre for Global Health Research, Kisumu, Kenya
| | - Benjamin H McMahon
- Theoretical Biology and Biophysics Group, Theoretical Division, Los Alamos National Laboratory, Los Alamos, NM, USA
| | - Collins Ouma
- University of New Mexico-Kenya Global Health Programs, Kisumu and Siaya, Kenya; Department of Biomedical Sciences and Technology, School of Public Health and Community Development, Maseno University, Maseno, Kenya
| | - Christophe G Lambert
- University of New Mexico, Center for Global Health, Department of Internal Medicine, NM, USA
| | - Douglas J Perkins
- University of New Mexico-Kenya Global Health Programs, Kisumu and Siaya, Kenya; University of New Mexico, Center for Global Health, Department of Internal Medicine, NM, USA.
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17
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Expression of LAIR-1 (CD305) on Human Blood Monocytes as a Marker of Hepatic Cirrhosis Progression. J Immunol Res 2019; 2019:2974753. [PMID: 31019980 PMCID: PMC6451821 DOI: 10.1155/2019/2974753] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Revised: 01/08/2019] [Accepted: 02/02/2019] [Indexed: 01/15/2023] Open
Abstract
Background and Aim The presumed role of the inhibitory receptor LAIR-1 (CD305) in the inflammatory response suggests that it might contribute to the pathophysiology of chronic inflammatory diseases such as liver cirrhosis. We studied the LAIR-1 expression on liver macrophages and blood monocytes related to the progression of liver cirrhosis. Methods The expression of LAIR-1 was analyzed by immunohistochemistry, flow cytometry, and Western blot. Results We found a decreased number of macrophages expressing LAIR-1 in cirrhotic liver that could be due to a high presence of collagen, ligand of LAIR-1, in the fibrotic tissue which could downregulate its expression or interfere with the immunostaining. The expression of LAIR-1 decreased after cell differentiation, and the total content, but not the cell surface expression, increased after activation in the HL-60 human macrophage in vitro model. Blood monocytes exhibited higher LAIR-1 expression levels in cirrhotic patients, which were evident even in early clinical stages in all monocyte subsets, and greater in the "intermediate" inflammatory monocyte subpopulation. The in vitro activation of human blood monocytes did not increase its expression on the cell surface suggesting that the in vivo increase of LAIR-1 must be the result of a specific combination of stimuli present in cirrhotic patients. This represents an exclusive feature of liver cirrhosis, since blood monocytes from other chronic inflammatory pathologies showed similar or lower LAIR-1 levels compared with those of healthy controls. Conclusions These results may indicate that monocyte LAIR-1 expression is a new biomarker to early detect liver damage caused by chronic inflammation in liver cirrhosis.
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18
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Martín-Sierra C, Martins R, Laranjeira P, Abrantes AM, Oliveira RC, Tralhão JG, Botelho MF, Furtado E, Domingues R, Paiva A. Functional Impairment of Circulating FcεRI + Monocytes and Myeloid Dendritic Cells in Hepatocellular Carcinoma and Cholangiocarcinoma Patients. CYTOMETRY PART B-CLINICAL CYTOMETRY 2019; 96:490-495. [PMID: 30828998 DOI: 10.1002/cyto.b.21777] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Revised: 01/16/2019] [Accepted: 02/12/2019] [Indexed: 12/14/2022]
Abstract
BACKGROUND Hepatocellular carcinoma (HCC) and cholangiocarcinoma (CCA) represent the most common primary liver malignancies whose outcome is influenced by the immune response. METHODS In this study, we have functionally characterized, by flow cytometry, circulating myeloid dendritic cells (mDCs) and FcεRI+ monocytes in a group of healthy individuals (n = 10) and in a group of patients with HCC (n = 19) and CCA (n = 8), at the time point of the surgical resection (T0) and once the patient had recovered from surgery (T1). Moreover, we proceeded to a more in depth phenotypic characterization of the FcεRI+ monocyte subpopulation. RESULTS A significant decrease in the frequency of TNFα producing FcεRI+ monocytes and mDCs in HCC and CCA patients when compared to the group of healthy individuals was observed, and a close association between FcεRI+ monocytes and mDCs dysfunction was identified. In addition, the phenotypic characteristics of FcεRI+ monocytes from healthy individuals strongly suggest that this population drives to mDCs, which matches with the fact that both populations are functionally affected. CONCLUSIONS The frequency and the function of circulating mDCs and FcεRI+ monocytes are affected in both HCC and CCA patients, and FcεRI+ monocytes could represent those fated to become mDCs. © 2019 International Clinical Cytometry Society.
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Affiliation(s)
- Carmen Martín-Sierra
- Unidade de Gestão Operacional em Citometria, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal.,Faculty of Medicine, Coimbra Institute for Clinical and Biomedical Research (iCBR), University of Coimbra, Coimbra, Portugal
| | - Ricardo Martins
- Faculty of Medicine, Coimbra Institute for Clinical and Biomedical Research (iCBR), University of Coimbra, Coimbra, Portugal.,Unidade Transplantação Hepática Pediátrica e de Adultos, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal.,Serviço de Cirurgia Geral, Unidade HBP, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal.,Instituto de Biofísica, IBILI, Faculdade de Medicina, Universidade de Coimbra, Coimbra, Portugal
| | - Paula Laranjeira
- Unidade de Gestão Operacional em Citometria, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal.,Faculty of Medicine, Coimbra Institute for Clinical and Biomedical Research (iCBR), University of Coimbra, Coimbra, Portugal
| | - A Margarida Abrantes
- Faculty of Medicine, Coimbra Institute for Clinical and Biomedical Research (iCBR), University of Coimbra, Coimbra, Portugal.,Instituto de Biofísica, IBILI, Faculdade de Medicina, Universidade de Coimbra, Coimbra, Portugal
| | - R Caetano Oliveira
- Faculty of Medicine, Coimbra Institute for Clinical and Biomedical Research (iCBR), University of Coimbra, Coimbra, Portugal.,Instituto de Biofísica, IBILI, Faculdade de Medicina, Universidade de Coimbra, Coimbra, Portugal.,Serviço de Anatomia Patológica, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
| | - J Guilherme Tralhão
- Faculty of Medicine, Coimbra Institute for Clinical and Biomedical Research (iCBR), University of Coimbra, Coimbra, Portugal.,Unidade Transplantação Hepática Pediátrica e de Adultos, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal.,Serviço de Cirurgia Geral, Unidade HBP, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal.,Instituto de Biofísica, IBILI, Faculdade de Medicina, Universidade de Coimbra, Coimbra, Portugal
| | - M Filomena Botelho
- Faculty of Medicine, Coimbra Institute for Clinical and Biomedical Research (iCBR), University of Coimbra, Coimbra, Portugal.,Instituto de Biofísica, IBILI, Faculdade de Medicina, Universidade de Coimbra, Coimbra, Portugal
| | - Emanuel Furtado
- Unidade Transplantação Hepática Pediátrica e de Adultos, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
| | - Rosário Domingues
- Mass Spectrometry Centre, Department of Chemistry & QOPNA, University of Aveiro, Campus Universitário de Santiago, Aveiro, Portugal
| | - Artur Paiva
- Unidade de Gestão Operacional em Citometria, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal.,Faculty of Medicine, Coimbra Institute for Clinical and Biomedical Research (iCBR), University of Coimbra, Coimbra, Portugal.,Instituto Politécnico de Coimbra, ESTESC-Coimbra Health School, Ciências Biomédicas Laboratoriais, Coimbra, Portugal
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Singh M, Bhatia P, Shandilya JK, Rawat A, Varma N, Sachdeva MS, Trehan A, Bansal D, Jain R, Totadri S. Low Expression of Leucocyte Associated Immunoglobulin Like Receptor-1 (LAIR-1/CD305) in a Cohort of Pediatric Acute Lymphoblastic Leukemia Cases. Asian Pac J Cancer Prev 2018; 19:3131-3135. [PMID: 30486600 PMCID: PMC6318422 DOI: 10.31557/apjcp.2018.19.11.3131] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Background: Immunophenotypic markers can play significant role in prognostic assessment for different cancers and leukocyte-associated Ig-like receptor (LAIR-1) is a recently identified inhibitory immuno-receptor. Methods: We measured LAIR-1 expression in paediatric ALL patients (n-42) and appropriate controls by flow cytometry. Median fluorescence intensities (MFIs) were calculated and correlated with demographic and clinical variables and early treatment outcome parameters. Results: The ALL cohort had an age range of 1 - 11 y and a M:F ratio of 2.5:1. 64% had WBC counts <50 x 109/L and 15 (36%) >50 x 109/L, 52% being standard risk and 48% high risk. There were 6 cases of T-ALL and 36 of B-ALL. AML1-TEL, E2A-PBX, BCR-ABL and MLL-AF4 transcripts were noted in 3, 6, 2 and 1 patient, respectively. Day 8 ABC was <1,000 in 31 and >1,000 in 8 cases, while 30 had low and 7 high MRD (both >0.01) at day 35 of treatment. The median MFI for LAIR-1 expression in control cases was 8.2 (range 7.76-11.69) and in ALL cases 4.02 (range 0.56 to 11.87), with 74% (n-31) of ALL cases showing reduced LAIR-1 expression. However, no significant correlations were found between standard ALL risk factors and LAIR-1 expression. Out of 42 patients, 4 died during induction treatment and one exited therapy, 60% (n-3/5) of these featuring low expression of LAIR-1. Also ALL patients with low LAIR-1 expression had t (12;21), t (1;19) and t (4;11) translocations in 2, 4 and 1 samples, respectively, but none had t (9;22). Of those with high LAIR-1 expression, 2 had t (9;22) (MFIs-14.43 and 11.87). Conclusions: This pilot study of LAIR-1expression in ALL suggests low expression of the inhibitory molecule in leukemic cells. However, the findings need to be confirmed with larger cohort, along with studies focusing on pathophysiological roles in leukemic clone survival and escape from the immune system.
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Affiliation(s)
- Minu Singh
- Pediatric Haematology-Oncology Unit, Department of Pediatrics, Post Graduate Institute of Medical Education and Research, Chandigarh, India.
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20
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Jin J, Wang Y, Ma Q, Wang N, Guo W, Jin B, Fang L, Chen L. LAIR-1 activation inhibits inflammatory macrophage phenotype in vitro. Cell Immunol 2018; 331:78-84. [PMID: 29887420 DOI: 10.1016/j.cellimm.2018.05.011] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Revised: 04/25/2018] [Accepted: 05/30/2018] [Indexed: 12/11/2022]
Abstract
Macrophages are key cell types of innate immunity and play a central role in inflammation and host defense. Leukocyte-associated Ig-like receptor-1 (LAIR-1) is highly expressed on macrophages and regulates macrophage functions in several conditions. However, whether LAIR-1 is involved in governing macrophage polarization is still not clear. Here, we investigated the effect of LAIR-1 on macrophage polarization using human macrophage polarization model with THP-1 cells. It was found that LAIR-1 was highly expressed in THP-1 macrophages. IFN-γ reduced LAIR-1 expression in THP-1 macrophages. However, IL-4 did not have an effect on the expression of LAIR-1. Moreover, activation of LAIR-1 significantly inhibited the proinflammatory M1-like macrophage differentiation and promoted alternative activation of macrophages. Therefore, LAIR-1 may play critical roles in macrophage polarization. This study provides a rationale for macrophage polarization and sheds light on homeostatic mechanism in which LAIR-1 activation can terminate inflammation which may be impaired in patients with autoimmune disease.
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Affiliation(s)
- Jingyi Jin
- Department of Immunology, The Fourth Military Medical University, Xi'an 710032, China
| | - Ying Wang
- Department of Stomatology, 307 Hospital, PLA, Beijing 100071, China
| | - Qianli Ma
- Department of Immunology, The Fourth Military Medical University, Xi'an 710032, China
| | - Ning Wang
- Department of Immunology, The Fourth Military Medical University, Xi'an 710032, China
| | - Wenwei Guo
- Department of Immunology, The Fourth Military Medical University, Xi'an 710032, China
| | - Boquan Jin
- Department of Immunology, The Fourth Military Medical University, Xi'an 710032, China
| | - Liang Fang
- Department of Immunology, The Fourth Military Medical University, Xi'an 710032, China.
| | - Lihua Chen
- Department of Immunology, The Fourth Military Medical University, Xi'an 710032, China.
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21
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Kim S, Easterling ER, Price LC, Smith SL, Coligan JE, Park JE, Brand DD, Rosloniec EF, Stuart JM, Kang AH, Myers LK. The Role of Leukocyte-Associated Ig-like Receptor-1 in Suppressing Collagen-Induced Arthritis. THE JOURNAL OF IMMUNOLOGY 2017; 199:2692-2700. [PMID: 28887430 DOI: 10.4049/jimmunol.1700271] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Accepted: 08/10/2017] [Indexed: 11/19/2022]
Abstract
Several observations implicate a critical role for T cell dysregulation as a central problem in rheumatoid arthritis. We investigated a mechanism for suppressing T cell activation by stimulating a natural inhibitory receptor called leukocyte-associated Ig-like receptor-1 (LAIR-1). The collagen-induced arthritis (CIA) model and DR-1 transgenic mice were used to study the importance of LAIR-1 in autoimmune arthritis. Splenocytes from wild-type or LAIR-1-/- mice were stimulated with soluble anti-CD3 Ab in the presence or absence of α1(II) and supernatants were collected for cytokine analysis. B6.DR1 mice were immunized with type II collagen/CFA to induce arthritis and were treated with either the stimulatory mAb to LAIR-1 or a hamster IgG control. Finally, B6.DR1/LAIR-1-/- and B6.DR1/LAIR-1+/+ mice were challenged for CIA and mean severity scores were recorded thrice weekly. Using splenocytes or purified CD4+ cells that were sufficient in LAIR-1, CD3-induced cytokine secretion was significantly suppressed in the presence of collagen, whereas LAIR-1-deficient splenocytes had no attenuation. Treatment with a stimulatory mAb to LAIR-1 also significantly attenuated CIA in the LAIR+/+ mice. When B6.DR1/LAIR-1-/- mice were immunized with type II collagen they developed more severe arthritis and had a greater percentage of affected limbs than the wild-type mice. These data demonstrate that collagen can suppress the T cell cytokine response through the action of LAIR-1. Treatment with stimulating LAIR-1 Abs suppresses CIA whereas B6.DR1/LAIR-1-/- mice develop more severe arthritis than wild-type controls. These data suggest that LAIR-1 may be a potential therapeutic target for suppressing rheumatoid arthritis.
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Affiliation(s)
- Seunghyun Kim
- Department of Medicine, University of Tennessee Health Science Center, Memphis, TN 38163
| | - Ellis R Easterling
- Department of Medicine, University of Tennessee Health Science Center, Memphis, TN 38163
| | - Lauren C Price
- Department of Medicine, University of Tennessee Health Science Center, Memphis, TN 38163
| | - Savannah L Smith
- Department of Medicine, University of Tennessee Health Science Center, Memphis, TN 38163
| | - John E Coligan
- Receptor Cell Biology Section, Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, Rockville, MD 20852
| | - Jeoung-Eun Park
- Department of Medicine, University of Tennessee Health Science Center, Memphis, TN 38163
| | - David D Brand
- Department of Medicine, University of Tennessee Health Science Center, Memphis, TN 38163.,Department of Microbiology, Immunology and Biochemistry, University of Tennessee Health Science Center, Memphis, TN 38163.,Research Service, Veterans Affairs Medical Center, Memphis, TN 38104; and
| | - Edward F Rosloniec
- Department of Medicine, University of Tennessee Health Science Center, Memphis, TN 38163.,Research Service, Veterans Affairs Medical Center, Memphis, TN 38104; and
| | - John M Stuart
- Department of Medicine, University of Tennessee Health Science Center, Memphis, TN 38163.,Research Service, Veterans Affairs Medical Center, Memphis, TN 38104; and
| | - Andrew H Kang
- Department of Medicine, University of Tennessee Health Science Center, Memphis, TN 38163.,Research Service, Veterans Affairs Medical Center, Memphis, TN 38104; and
| | - Linda K Myers
- Division of Rheumatology, Department of Pediatrics, University of Tennessee Health Science Center, Memphis, TN 38163
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22
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Son M, Diamond B, Volpe BT, Aranow CB, Mackay MC, Santiago-Schwarz F. Evidence for C1q-mediated crosslinking of CD33/LAIR-1 inhibitory immunoreceptors and biological control of CD33/LAIR-1 expression. Sci Rep 2017; 7:270. [PMID: 28325905 PMCID: PMC5412647 DOI: 10.1038/s41598-017-00290-w] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Accepted: 02/17/2017] [Indexed: 02/03/2023] Open
Abstract
C1q collagen-like region (CLR) engaging and activating the LAIR-1 inhibitory immunoreceptor represents a non-complement mechanism for maintaining immune quiescence. Given the binding promiscuity of C1q’s globular region (gC1q), we hypothesized that C1q concurrently associates with distinct inhibitory immunoreceptors to produce C1q-mediated modulatory networking. Like LAIR-1, CD33 inhibitory immunoreceptors are highly expressed on monocytes. Binding CD33 restricts cell activation/differentiation; however, natural ligands for CD33 remain elusive. CD33 has IgC2-like domains potentially recognized by gC1q. Thus, we asked whether C1q binds to CD33 and if C1q mediates CD33/LAIR-1 crosslinking. Our findings demonstrate that C1q and gC1q interact with CD33 to activate its inhibitory motifs, while CLR does not. Whole C1q is required to crosslink CD33 and LAIR-1 and concurrently activate CD33/LAIR-1 inhibitory motifs. While C1q binds CD33C2 domains, decreased C1q-CD33 interactions resulting from sialic acid masking of CD33C2 domains suggests a process for regulating C1q-CD33 activity. Consistent with defective self-tolerance, CD33/LAIR-1 expression is reduced in systemic lupus erythematosus (SLE) myelomonocytes. The anti-inflammatory cytokine M-CSF, but not DC growth factors, sustains CD33/LAIR-1 expression on both healthy and SLE cells suggesting further biological control of C1q-CD33/LAIR-1 processes.
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Affiliation(s)
- Myoungsun Son
- Center for Autoimmune and Musculoskeletal Diseases, The Feinstein Institute for Medical Research, Northwell Health, Manhasset, NY, 11030, USA
| | - Betty Diamond
- Center for Autoimmune and Musculoskeletal Diseases, The Feinstein Institute for Medical Research, Northwell Health, Manhasset, NY, 11030, USA
| | - Bruce T Volpe
- Center for Biomedical Science, The Feinstein Institute for Medical Research, Northwell Health, Manhasset, NY, 11030, USA
| | - Cynthia B Aranow
- Center for Autoimmune and Musculoskeletal Diseases, The Feinstein Institute for Medical Research, Northwell Health, Manhasset, NY, 11030, USA
| | - Meggan C Mackay
- Center for Autoimmune and Musculoskeletal Diseases, The Feinstein Institute for Medical Research, Northwell Health, Manhasset, NY, 11030, USA
| | - Frances Santiago-Schwarz
- Center for Autoimmune and Musculoskeletal Diseases, The Feinstein Institute for Medical Research, Northwell Health, Manhasset, NY, 11030, USA.
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23
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Rehman ZU, Knight JS, Koolaard J, Simpson HV, Pernthaner A. Immunomodulatory effects of adult Haemonchus contortus excretory/secretory products on human monocyte-derived dendritic cells. Parasite Immunol 2016; 37:657-69. [PMID: 26457886 DOI: 10.1111/pim.12288] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2015] [Accepted: 10/05/2015] [Indexed: 12/13/2022]
Abstract
The levels of expression of surface molecules and release of cytokines and chemokines of human monocyte-derived dendritic cells were determined after their exposure to adult H. contortus excretory/secretory (ES) products or a combination of ES products and bacterial lipopolysaccharide (LPS). Worm products provoked a weak response and only partial maturation of the dendritic cells, consistent with the hyporesponsiveness and more tolerogenic immune environment present in parasitized animals and humans. Co-stimulation with LPS demonstrated that H. contortus secretions, like those of other helminths, contain immunomodulators capable of reducing some aspects of the strong T(H)1/T(H)2 response evoked by bacterial LPS. There were significant reductions in the release of some cytokine/chemokines by LPS-stimulated mdDCs and a trend (although not significant at P < 0.05) for reduced expression levels of CD40, CD80 and HLA-DR. A prominent feature was the variability in responses of dendritic cells from the four donors, even on different days in repeat experiments, suggesting that generalized conclusions may be difficult to make, except in genetically related animals. Such observations may therefore be applicable only to restricted populations. In addition, previous exposure to parasites in a target population for immunomodulatory therapy may be an important factor in assessing the likelihood of adverse reactions or failures in the treatment to worm therapy.
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Affiliation(s)
- Z U Rehman
- Institute of Veterinary Animal and Biological Sciences, Massey University, Palmerston North, New Zealand
| | - J S Knight
- The Hopkirk Research Institute, AgResearch Ltd, Palmerston North, New Zealand
| | - J Koolaard
- Grasslands Research Centre, AgResearch Ltd, Palmerston North, New Zealand
| | - H V Simpson
- Institute of Veterinary Animal and Biological Sciences, Massey University, Palmerston North, New Zealand
| | - A Pernthaner
- The Hopkirk Research Institute, AgResearch Ltd, Palmerston North, New Zealand
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24
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Differential gene expression levels might explain association of LAIR2 polymorphisms with pemphigus. Hum Genet 2015; 135:233-44. [PMID: 26721477 DOI: 10.1007/s00439-015-1626-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2015] [Accepted: 12/11/2015] [Indexed: 12/11/2022]
Abstract
The leukocyte-associated immunoglobulin-like receptor 1 (LAIR-1) is a collagen-binding inhibitory receptor important for the regulation of immune responses, expressed on the majority of peripheral blood mononuclear cells (PBMC). LAIR-2 is a soluble homolog that antagonizes LAIR-1 inhibitory function by binding the same ligands. We sought to investigate whether LAIR1 and LAIR2 single nucleotide polymorphisms (SNP) are associated with differential mRNA expression levels. We analyzed 14 SNPs of LAIR1 (6) and LAIR2 (8) by mass spectrometry-based genotyping and extracted mRNA from PBMC of 177 healthy subjects, followed by quantitative assays. Four SNPs of LAIR1 and two SNPs of LAIR2 mark differential mRNA levels in healthy individuals. To verify the biological relevance of these findings, we analyzed additional 515 individuals (282 patients and 233 controls) to check if LAIR1 and LAIR2 differential mRNA expression could be related to susceptibility to pemphigus foliaceus (PF), an autoimmune blistering skin disease endemic in Brazil. Two LAIR1 variants (rs56802430 G, OR = 1.52, p = 0.0329; rs11084332 C, OR = 0.57, p = 0.0022) and one LAIR2 (rs2287828 T+, OR = 1.9, p = 0.0097) contribute to differential susceptibility to PF. Furthermore, we demonstrate interactions among four LAIR2 SNPs (rs2042287, rs2287828, rs2277974 and rs114834145). A haplotype harboring these SNPs is strongly associated with higher LAIR2 mRNA levels (4.5-fold, p = 0.0069) and with higher susceptibility to PF (OR = 4.02, p = 0.0008). We suggest that LAIR1 and LAIR2 genetic variants are associated with regulation of gene expression and variable PF susceptibility, and show indirect association of LAIR2 differential mRNA expression with PF pathogenesis. Our data demonstrate how this relatively unknown disease can add invaluable knowledge regarding the role of LAIR1 and LAIR2 in immune responses.
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25
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Son M, Diamond B. C1q-mediated repression of human monocytes is regulated by leukocyte-associated Ig-like receptor 1 (LAIR-1). Mol Med 2015; 20:559-68. [PMID: 25247291 DOI: 10.2119/molmed.2014.00185] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2014] [Accepted: 09/17/2014] [Indexed: 01/28/2023] Open
Abstract
Systemic lupus erythematosus (SLE) is a chronic autoimmune disease characterized by abnormal function of both the innate and the adaptive immune system, leading to a loss of tolerance to self-antigens. Monocytes are a key component of the innate immune system and are efficient producers of multiple cytokines. In SLE, inappropriate activation of monocytes is thought to contribute to the loss of self-tolerance. In this study, we demonstrate that type 1 interferon (IFN) production by CpG-challenged monocytes can be suppressed by C1q through activating leukocyte-associated Ig-like receptor-1 (LAIR-1), which contains immunoreceptor tyrosine-based inhibition motifs (ITIMs). The phosphorylation of LAIR-1 and the interaction of LAIR-1 with SH2 domain-containing protein tyrosine phosphatase-1 (SHP-1) were enhanced after LAIR-1 engagement by C1q. Moreover, engagement of LAIR-1 by C1q inhibited nuclear translocation of interferon regulatory factor (IRF)-3 and IRF5 in CpG-stimulated monocytes. These data suggest a model in which LAIR-1 engagement by C1q helps maintain monocyte tolerance, specifically with respect to Toll-like receptor-9-mediated monocyte activation.
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Affiliation(s)
- Myoungsun Son
- Center for Autoimmune and Musculoskeletal Diseases, Feinstein Institute for Medical Research, Manhasset, New York, United States of America
| | - Betty Diamond
- Center for Autoimmune and Musculoskeletal Diseases, Feinstein Institute for Medical Research, Manhasset, New York, United States of America
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26
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CD244 is expressed on dendritic cells and regulates their functions. Immunol Cell Biol 2015; 93:581-90. [PMID: 25643613 DOI: 10.1038/icb.2014.124] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2014] [Revised: 12/05/2014] [Accepted: 12/24/2014] [Indexed: 12/28/2022]
Abstract
Signaling lymphocytic activation molecule (SLAM) receptors have an important role in the development of immune responses because of their roles, for exampe, in NK cell cytotoxicity and cytokine production by NK, T cells and myeloid cells. The SLAM receptor CD244 (2B4, SLAMf4) is expressed on a variety of immune cell types but most of its functions have been examined on NK and T cells. In the present study, we investigated expression and function of CD244 in murine subsets of dendritic cells (DCs). We report that all subsets of murine DCs examined expressed CD244, although the expression levels of CD244 varied between subsets. Splenic and resident mesenteric lymph node (MLN) DCs from CD244(-/-) mice expressed lower levels of CD86 and MHC class II compared with wild-type mice. Upon Toll-like receptor (TLR) stimulation, no differences in surface expression of these molecules were observed between DCs from CD244(-/-) and wild-type mice. However, splenic DCs from CD244(-/-) mice upon stimulation with TLR binding ligands lipopolysaccharide (LPS) and CpG produced significantly higher levels of pro-inflammatory cytokines. In addition, DCs from CD244(-/-) mice elicited increased NK cell activation in vitro. These data add CD244 to a growing list of immuno-modulatory receptors found on DCs.
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27
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Gopinathan U, Brusletto BS, Olstad OK, Kierulf P, Berg JP, Brandtzaeg P, Øvstebø R. IL-10 immunodepletion from meningococcal sepsis plasma induces extensive changes in gene expression and cytokine release in stimulated human monocytes. Innate Immun 2014; 21:429-49. [PMID: 25233959 DOI: 10.1177/1753425914547743] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2014] [Accepted: 07/22/2014] [Indexed: 11/15/2022] Open
Abstract
The severity of systemic meningococcal disease (SMD) correlates to plasma concentrations of LPS and IL-10, with the highest levels detected in non-survivors. Here, plasma from patients with SMD containing high and low concentrations of LPS were incubated with human monocytes before and after immunodepletion of IL-10 to study the effect of IL-10 on gene expression and cytokine release. Patient plasma containing IL-10 induced the expression of 1657 genes in human monocytes when compared with gene expression induced by low LPS plasma. After immunodepletion of IL-10, this number increased to 2260. By directly comparing the gene expression profiles induced before and after immunodepletion of IL-10, the presence of IL-10 differentially regulated 373 genes. Functional classes associated with these genes were cellular function and maintenance, cellular development, cellular growth and proliferation, cell-cell signaling and interaction and cellular movement. Immunodepletion of IL-10 resulted in down-regulation of genes of the leukocyte immunoglobulin-like receptor family, and up-regulation of genes of type I IFN signaling, TLR signaling, the inflammasomes, coagulation and fibrinolysis. Finally, immunodepletion of IL-10 increased the protein levels of IL-1β, IL-8, TNF-α, MIP-1α and MIP-1β. Data suggest that IL-10 in meningococcal sepsis plasma regulates a variety of genes and signaling pathways, likely leading to an overall inhibitory effect on the inflammatory response induced in meningococcal sepsis.
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Affiliation(s)
- Unni Gopinathan
- Blood Cell Research Group, Section for Research, Department of Medical Biochemistry, Oslo University Hospital, University of Oslo, Oslo, Norway Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Berit Sletbakk Brusletto
- Blood Cell Research Group, Section for Research, Department of Medical Biochemistry, Oslo University Hospital, University of Oslo, Oslo, Norway
| | - Ole Kristoffer Olstad
- Blood Cell Research Group, Section for Research, Department of Medical Biochemistry, Oslo University Hospital, University of Oslo, Oslo, Norway
| | - Peter Kierulf
- Blood Cell Research Group, Section for Research, Department of Medical Biochemistry, Oslo University Hospital, University of Oslo, Oslo, Norway Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Jens Petter Berg
- Blood Cell Research Group, Section for Research, Department of Medical Biochemistry, Oslo University Hospital, University of Oslo, Oslo, Norway Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Petter Brandtzaeg
- Blood Cell Research Group, Section for Research, Department of Medical Biochemistry, Oslo University Hospital, University of Oslo, Oslo, Norway Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway Department of Pediatrics, Oslo University Hospital, University of Oslo, Oslo, Norway
| | - Reidun Øvstebø
- Blood Cell Research Group, Section for Research, Department of Medical Biochemistry, Oslo University Hospital, University of Oslo, Oslo, Norway
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28
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Xie X, Xu Z, Cui J, Jin B. A non-stimulatory monoclonal antibody against the inhibitory immunoreceptor LAIR-1. Monoclon Antib Immunodiagn Immunother 2014; 33:141-7. [PMID: 24694245 DOI: 10.1089/mab.2013.0062] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
The human leukocyte-associated Ig-like receptor (LAIR) family contains two members: LAIR-1 (CD305) and LAIR-2 (CD306). Among them, LAIR-1 is a transmembrane glycoprotein bearing two intracellular immunoreceptor tyrosine-based inhibition motifs (ITIM) and LAIR-2 is soluble. Both molecules bind collagen and LAIR-2 has higher affinity than LAIR-1. LAIR-1 can mediate strong inhibitory signal but the functions of leukocytes expressing LAIR-1 are unclear because of the absence of an effective method to isolate them with resting status. In this study, we generated a monoclonal antibody (MAb) by immunizing BALB/c mice with the recombinant LAIR-2-GST fusion protein, which we termed 3G4. The subclass of 3G4 was identified as IgG1. Specificity analysis by Western blotting demonstrated 3G4 could react with both LAIR-1 and LAIR-2. Unlike another LAIR-1-specific MAb (9.1C3), 3G4 did not inhibit the lysis of target cells P815 by NK cells in a redirected cytotoxicity assay. Preincubation of LAIR-1-transfected K562 cells with 3G4 mildly prevented the binding of LAIR-1 to collagens I and III in a dose-dependent manner. Taken together, the novel MAb 3G4 provides a useful tool to isolate LAIR-1-positive cells without changing their resting state for further application.
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Affiliation(s)
- Xin Xie
- 1 Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Science, Northwest University , Xi'an, China
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29
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Poggi A, Musso A, Dapino I, Zocchi MR. Mechanisms of tumor escape from immune system: role of mesenchymal stromal cells. Immunol Lett 2014; 159:55-72. [PMID: 24657523 DOI: 10.1016/j.imlet.2014.03.001] [Citation(s) in RCA: 95] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2014] [Revised: 03/01/2014] [Accepted: 03/05/2014] [Indexed: 12/12/2022]
Abstract
Tumor microenvironment represents the site where the tumor tries to survive and escape from immune system-mediated recognition. Indeed, to proliferate tumor cells can divert the immune response inducing the generation of myeloid derived suppressor cells and regulatory T cells which can limit the efficiency of effector antitumor lymphocytes in eliminating neoplastic cells. Many components of the tumor microenvironment can serve as a double sword for the tumor and the host. Several types of fibroblast-like cells, which herein we define mesenchymal stromal cells (MSC), secrete extracellular matrix components and surrounding the tumor mass can limit the expansion of the tumor. On the other hand, MSC can interfere with the immune recognition of tumor cells producing immunoregulatory cytokines as transforming growth factor (TGF)ß, releasing soluble ligands of the activating receptors expressed on cytolytic effector cells as decoy molecules, affecting the correct interaction among lymphocytes and tumor cells. MSC can also serve as target for the same anti-tumor effector lymphocytes or simply impede the interaction between these lymphocytes and neoplastic cells. Thus, several evidences point out the role of MSC, both in epithelial solid tumors and hematological malignancies, in regulating tumor cell growth and immune response. Herein, we review these evidences and suggest that MSC can be a suitable target for a more efficient anti-tumor therapy.
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Affiliation(s)
- Alessandro Poggi
- Molecular Oncology and Angiogenesis Unit, IRCCS AOU San Martino IST, 16132 Genoa, Italy.
| | - Alessandra Musso
- Molecular Oncology and Angiogenesis Unit, IRCCS AOU San Martino IST, 16132 Genoa, Italy
| | - Irene Dapino
- Molecular Oncology and Angiogenesis Unit, IRCCS AOU San Martino IST, 16132 Genoa, Italy
| | - Maria Raffaella Zocchi
- Division of Immunology, Transplants and Infectious Diseases, Istituto Scientifico San Raffaele Milan, 20132 Milan, Italy
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30
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Poggi A, Zocchi MR. NK cell autoreactivity and autoimmune diseases. Front Immunol 2014; 5:27. [PMID: 24550913 PMCID: PMC3912987 DOI: 10.3389/fimmu.2014.00027] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2013] [Accepted: 01/17/2014] [Indexed: 01/14/2023] Open
Abstract
Increasing evidences have pointed out the relevance of natural killer (NK) cells in organ-specific and systemic autoimmune diseases. NK cells bear a plethora of activating and inhibiting receptors that can play a role in regulating reactivity with autologous cells. The activating receptors recognize natural ligands up-regulated on virus-infected or stressed or neoplastic cells. Of note, several autoimmune diseases are thought to be linked to viral infections as one of the first event in inducing autoimmunity. Also, it is conceivable that autoimmunity can be triggered when a dysregulation of innate immunity occurs, activating T and B lymphocytes to react with self-components. This would imply that NK cells can play a regulatory role during adaptive immunity; indeed, innate lymphoid cells (ILCs), comprising the classical CD56+ NK cells, have a role in maintaining or alternating tissue homeostasis secreting protective and/or pro-inflammatory cytokines. In addition, NK cells display activating receptors involved in natural cytotoxicity and the activating isoforms of receptors for HLA class I that can interact with healthy host cells and induce damage without any evidence of viral infection or neoplastic-induced alteration. In this context, the interrelationship among ILC, extracellular-matrix components, and mesenchymal stromal cells can be considered a key point for the control of homeostasis. Herein, we summarize evidences for a role of NK cells in autoimmune diseases and will give a point of view of the interplay between NK cells and self-cells in triggering autoimmunity.
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Affiliation(s)
- Alessandro Poggi
- Molecular Oncology and Angiogenesis Unit, IRCCS AOU San Martino-IST , Genoa , Italy
| | - Maria Raffaella Zocchi
- Division of Immunology, Transplants and Infectious Diseases, Scientific Institute San Raffaele , Milan , Italy
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31
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Zhang Y, Lv K, Zhang C, Jin B, Zhuang R, Ding Y. The role of LAIR-1 (CD305) in T cells and monocytes/macrophages in patients with rheumatoid arthritis. Cell Immunol 2014; 287:46-52. [DOI: 10.1016/j.cellimm.2013.12.005] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2013] [Revised: 11/26/2013] [Accepted: 12/05/2013] [Indexed: 01/21/2023]
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C1q limits dendritic cell differentiation and activation by engaging LAIR-1. Proc Natl Acad Sci U S A 2012; 109:E3160-7. [PMID: 23093673 DOI: 10.1073/pnas.1212753109] [Citation(s) in RCA: 124] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
C1q, the first component of complement, and leukocyte-associated Ig-like receptor 1 (LAIR-1; CD305), an inhibitory receptor expressed on hematopoietic cells, have both been associated with arrest of monocyte-derived dendritic cell (DC) differentiation and inhibition of Toll-like receptor activity in plasmacytoid DCs. Defects in both molecules have been implicated in susceptibility to, and progression of, systemic lupus erythematosus. Inhibitory signaling partners for C1q on monocytes and DCs remain undefined. Because C1q contains collagen-like motifs and LAIR-1 is a universal collagen receptor, we hypothesized that C1q is a functional ligand for LAIR-1. Binding analyses in cell-free systems and on the cell membrane demonstrate that C1q and its collagen tail associate with LAIR-1 and LAIR-2 (CD306), a soluble inhibitor of LAIR-1. Both C1q and its collagen tail trigger phosphorylation of LAIR-1 immunoreceptor tyrosine-based inhibitory motifs (ITIMs) in monocytes. Functional analyses show that C1q-mediated inhibition of monocyte-DC differentiation and C1q-mediated inhibition of IFN-α production by plasmacytoid DCs were both reversed by LAIR-2. Moreover, C1q-mediated inhibition of DC differentiation was reversed by LAIR-1 siRNA. Thus, C1q is a functional ligand for LAIR-1 restricting immune cell differentiation and activation. The discovery of C1q interactions with LAIR-1 and LAIR-2 lends much needed insight into molecular mechanisms operating to prevent the loss of tolerance, particularly in systemic lupus erythematosus.
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Walk J, Westerlaken GHA, van Uden NO, Belderbos ME, Meyaard L, Bont LJ. Inhibitory receptor expression on neonatal immune cells. Clin Exp Immunol 2012; 169:164-71. [PMID: 22774991 DOI: 10.1111/j.1365-2249.2012.04599.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Neonates are born with quantitative and qualitative defects in both adaptive and innate immune responses. The immune system is regulated by several mechanisms, including the signalling of inhibitory receptors. Increased expression of inhibitory receptors may result in a higher threshold for activation and suppressed function of neonatal cells. The aim of this study was to determine whether the expression of seven inhibitory receptors is increased on neonatal immune cells compared to adult immune cells. In a healthy birth cohort, we examined the expression of seven inhibitory immune receptors on neonatal neutrophils, monocytes, natural killer (NK) cells, CD4(+) and CD8(+)T cells. The expression of leucocyte-associated immunoglobulin (Ig)-like receptor-1 (LAIR-1), signal inhibitory receptor on leucocytes-1 (SIRL-1), CD31, signal-regulatory protein alpha (SIRPα), Siglec-9, CD200R, immune receptor expressed on myeloid cells-1 (IREM-1) and the membrane-bound ligand CD200 was studied by flow cytometry on leucocytes in cord blood (n = 14), neonatal venous blood (n = 24) and adult venous blood (n = 22). Expression of LAIR-1, CD31 and CD200 was increased consistently across all neonatal T cell subsets. Neonatal monocytes exhibited decreased expression of LAIR-1 and IREM-1 compared to adults. Furthermore, cord blood and neonatal venous blood samples contained a distinct LAIR-1-positive neutrophil population, which was not detected in adult blood. We demonstrated distinct expression of inhibitory receptors on neonatal peripheral blood immune cells in a healthy birth cohort. This is the first evidence that inhibitory receptors play a role in regulation of the neonatal immune system. Consistently increased inhibitory receptor expression on T cells may be an important mechanism in preventing the development of allergy and autoimmunity.
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Affiliation(s)
- J Walk
- Department of Paediatrics, Wilhelmina Children's Hospital, Utrecht, The Netherlands
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Colombo BM, Canevali P, Magnani O, Rossi E, Puppo F, Zocchi MR, Poggi A. Defective expression and function of the leukocyte associated Ig-like receptor 1 in B lymphocytes from systemic lupus erythematosus patients. PLoS One 2012; 7:e31903. [PMID: 22355402 PMCID: PMC3280211 DOI: 10.1371/journal.pone.0031903] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2011] [Accepted: 01/16/2012] [Indexed: 11/18/2022] Open
Abstract
Systemic lupus erythematosus (SLE) is characterized by the production of a wide array of autoantibodies and dysregulation of B cell function. The leukocyte associated Immunoglobulin (Ig)-like receptor (LAIR)1 is a transmembrane molecule belonging to Ig superfamily which binds to different types of collagen. Herein, we have determined the expression and function of LAIR1 on B lymphocyte from SLE patients. LAIR1 expression in peripheral blood B lymphocytes from 54 SLE, 24 mixed connective tissue disease (MCTD), 20 systemic sclerosis (SSc) patients, 14 rheumatoid arthritis (RA) and 40 sex and age matched healthy donors (HD) have been analyzed by immunofluorescence. The effect of LAIR1 ligation by specific monoclonal antibodies, collagen or collagen producing mesenchymal stromal cells from reactive lymph nodes or bone marrow on Ig production by pokeweed mitogen and B cell receptor (BCR)-mediated NF-kB activation was assessed by ELISA and TransAM assay. The percentage of CD20+ B lymphocytes lacking or showing reduced expression of LAIR1 was markedly increased in SLE and MCTD but not in SSc or RA patients compared to HD. The downregulation of LAIR1 expression was not dependent on corticosteroid therapy. Interestingly, LAIR1 engagement by collagen or collagen-producing mesenchymal stromal cells in SLE patients with low LAIR1 expression on B cells delivered a lower inhibiting signal on Ig production. In addition, NF-kB p65 subunit activation upon BCR and LAIR1 co-engagement was less inhibited in SLE patients than in HD. Our findings indicate defective LAIR1 expression and function in SLE B lymphocytes, possible contributing to an altered control of B lymphocytes behavior.
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Affiliation(s)
| | - Paolo Canevali
- Laboratory of Molecular Oncology and Angiogenesis, National Institute for Cancer Research, IRCCS-Azienso Ospedaliera Universitaria (AOU) San Martino, Genoa, Italy
- Division of Immunology, Transplant and Infectious Diseases, Scientific Institute San Raffaele, Milan, Italy
| | - Ottavia Magnani
- Department of Internal Medicine, University of Genoa, Genoa, Italy
| | - Edoardo Rossi
- Department of Hematology, IRCCS-A.O.U-San Martino-IST-National Institute for Cancer Research, Genoa, Italy
| | - Francesco Puppo
- Department of Internal Medicine, University of Genoa, Genoa, Italy
| | - Maria Raffaella Zocchi
- Division of Immunology, Transplant and Infectious Diseases, Scientific Institute San Raffaele, Milan, Italy
| | - Alessandro Poggi
- Laboratory of Molecular Oncology and Angiogenesis, National Institute for Cancer Research, IRCCS-Azienso Ospedaliera Universitaria (AOU) San Martino, Genoa, Italy
- * E-mail:
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Olde Nordkamp MJM, van Roon JAG, Douwes M, de Ruiter T, Urbanus RT, Meyaard L. Enhanced secretion of leukocyte-associated immunoglobulin-like receptor 2 (LAIR-2) and soluble LAIR-1 in rheumatoid arthritis: LAIR-2 is a more efficient antagonist of the LAIR-1-collagen inhibitory interaction than is soluble LAIR-1. ACTA ACUST UNITED AC 2012; 63:3749-57. [PMID: 22127695 DOI: 10.1002/art.30612] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
OBJECTIVE Human leukocyte-associated immunoglobulin-like receptor 1 (hLAIR-1) is an immune inhibitory receptor for collagen that is expressed on most immune cells. We previously showed that the LAIR-1-collagen interaction could be antagonized by the secreted homolog hLAIR-2, which can be detected in the synovial fluid of rheumatoid arthritis (RA) patients. In addition, the extracellular part of hLAIR-1 is a putative antagonist upon shedding from the cell membrane. The purpose of this study was to determine the relative roles of hLAIR-2 and soluble hLAIR-1 (shLAIR-1) in the regulation of the LAIR-1-collagen interaction. METHODS The ability of recombinant LAIR proteins to abrogate LAIR-1-collagen binding was tested by flow cytometry and adhesion assays. Collagen binding capacity was analyzed by surface plasmon resonance. Plasma, urine, and synovial fluid were screened for the presence of sLAIR-1 and LAIR-2 by enzyme-linked immunosorbent assay. RESULTS Recombinant LAIR-2 proteins abrogated the binding of collagen to LAIR-1 more efficiently than did recombinant sLAIR-1. Consistent with these findings, surface plasmon resonance analysis showed that LAIR-2 had a higher affinity for collagen than did LAIR-1. Activated CD4+ T cells were the main producers of LAIR-2, whereas the source of sLAIR-1 remains elusive. Both soluble LAIR-1 and LAIR-2 could be detected in the plasma and urine of healthy control subjects and patients with RA. Urinary levels of both proteins were significantly increased in RA patients, and LAIR-2 levels in urine were significantly correlated with markers of inflammation. CONCLUSION Our data suggest that LAIR-2 is a more potent antagonist of LAIR-1 function in vivo, while both sLAIR-1 and LAIR-2 are potential biomarkers that may be used to monitor urine samples for evidence of systemic inflammation.
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Tang X, Tian L, Esteso G, Choi SC, Barrow AD, Colonna M, Borrego F, Coligan JE. Leukocyte-associated Ig-like receptor-1-deficient mice have an altered immune cell phenotype. THE JOURNAL OF IMMUNOLOGY 2011; 188:548-58. [PMID: 22156345 DOI: 10.4049/jimmunol.1102044] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Cross-linking of the collagen binding receptor leukocyte-associated Ig-like receptor-1 (LAIR-1) in vitro delivers an inhibitory signal that is able to downregulate activation-mediated signals. To study the in vivo function of LAIR-1, we generated LAIR-1(-/-) mice. They are healthy and fertile and have normal longevity; however, they show certain phenotypic characteristics distinct from wild-type mice, including increased numbers of splenic B, regulatory T, and dendritic cells. As LAIR-1(-/-) mice age, the splenic T cell population shows a higher frequency of activated and memory T cells. Because LAIR-1(+/+) and LAIR-1(-/-) T cells traffic with equal proficiency to peripheral lymphoid organs, this is not likely due to abnormal T lymphocyte trafficking. LAIR-1(-/-) mice have lower serum levels of IgG1 and, in response to T-dependent immunization with trinitrophenyl-OVA, switch less efficiently to Ag specific IgG2a and IgG2b, whereas switching to IgG1 is not affected. Several mouse disease models, including experimental autoimmune encephalitis and colitis, were used to examine the effect of LAIR-1 deficiency, and no differences in the responses of LAIR-1(-/-) and LAIR-1(+/+) mice were observed. Taken together, these observations indicate that LAIR-1 plays a role in regulating immune cells and suggest that any adverse effects of its absence may be balanced in vivo by other inhibitory receptors.
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Affiliation(s)
- Xiaobin Tang
- Receptor Cell Biology Section, Laboratory of Immunogenetics, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD 20852, USA
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Xue J, Zhang X, Zhao H, Fu Q, Cao Y, Wang Y, Feng X, Fu A. Leukocyte-associated immunoglobulin-like receptor-1 is expressed on human megakaryocytes and negatively regulates the maturation of primary megakaryocytic progenitors and cell line. Biochem Biophys Res Commun 2011; 405:128-33. [PMID: 21216234 DOI: 10.1016/j.bbrc.2010.12.140] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2010] [Accepted: 12/31/2010] [Indexed: 12/19/2022]
Abstract
Leukocyte-associated immunoglobulin-like receptor-1 (LAIR-1) is an inhibitory collagen receptor which belongs to the immunoglobulin (Ig) superfamily. Although the inhibitory function of LAIR-1 has been extensively described in multiple leukocytes, its role in megakaryocyte (MK) has not been explored so far. Here, we show that LAIR-1 is expressed on human bone marrow CD34(+)CD41a(+) and CD41a(+)CD42b(+) cells. LAIR-1 is also detectable in a fraction of human cord blood CD34(+) cell-derived MK that has morphological characteristics of immature MK. In megakaryoblastic cell line Dami, the membrane protein expression of LAIR-1 is up-regulated significantly when cells are treated with phorbol ester phorbol 12-myristate 13-acetate (PMA). Furthermore, cross-linking of LAIR-1 in Dami cells with its natural ligand or anti-LAIR-1 antibody leads to the inhibition of cell proliferation and PMA-promoted differentiation when examined by the MK lineage-specific markers (CD41a and CD42b) and polyploidization. In addition, we also observed that cross-linking of LAIR-1 results in decreased MK generation from primary human CD34(+) cells cultured in a cytokines cocktail that contains TPO. These results suggest that LAIR-1 is a likely candidate for an early marker of MK differentiation, and provide initial evidence indicating that LAIR-1 serves as a negative regulator of megakaryocytopoiesis.
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Affiliation(s)
- Jiangnan Xue
- Department of Immunology, Binzhou Medical University, Yantai, China.
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Bonaccorsi I, Cantoni C, Carrega P, Oliveri D, Lui G, Conte R, Navarra M, Cavaliere R, Traggiai E, Gattorno M, Martini A, Mingari MC, Moretta A, Ferlazzo G. The immune inhibitory receptor LAIR-1 is highly expressed by plasmacytoid dendritic cells and acts complementary with NKp44 to control IFNα production. PLoS One 2010; 5:e15080. [PMID: 21151495 PMCID: PMC2994815 DOI: 10.1371/journal.pone.0015080] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2010] [Accepted: 10/17/2010] [Indexed: 11/25/2022] Open
Abstract
Plasmacytoid dendritic cells (pDCs) are a subset of dendritic cells endowed with the capacity of producing large amounts of IFNα. Here we show that the Leukocyte-Associated Ig-like Receptor-1 (LAIR-1) is abundantly expressed on pDCs (the highest expression among all leukocytes) and its cross-linking inhibits IFNα production in response to Toll-like receptor ligands. Remarkably, LAIR-1 expression in pDCs is down-regulated in the presence of interleukin (IL)-3, thus indicating coordinated functions with NKp44, another pDC inhibitory receptor, which is conversely induced by IL-3. Nevertheless, the expression of NKp44 in pDCs isolated from secondary lymphoid organs, which is thought to be influenced by IL-3, is not coupled to a decreased expression of LAIR-1. Interestingly, pDCs isolated from peripheral blood of systemic lupus erithematosus (SLE) patients express lower levels of LAIR-1 while displaying slight but consistent expression of NKp44, usually undetectable on pDCs derived from healthy donors. Using sera derived from SLE patients, we show that LAIR-1 and NKp44 display synergistic inhibitory effects on IFNα production by interleukin IL-3 cultured pDCs stimulated with DNA immunocomplexes. In conclusion, our results indicate that the inhibitory function of LAIR-1 may play a relevant role in the mechanisms controlling IFNα production by pDCs both in normal and pathological innate immune responses.
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Affiliation(s)
- Irene Bonaccorsi
- Laboratory of Immunology and Biotherapy, Department of Human Pathology, University of Messina, Messina, Italy
| | - Claudia Cantoni
- Department of Experimental Medicine (DIMES), University of Genoa, Genoa, Italy
- Istituto Giannina Gaslini, Genoa, Italy
- Centro di Eccellenza per la Ricerca Biomedica (CERB), University of Genoa, Genoa, Italy
| | | | - Daniela Oliveri
- Laboratory of Immunology and Biotherapy, Department of Human Pathology, University of Messina, Messina, Italy
| | | | - Romana Conte
- Istituto Nazionale per la Ricerca sul Cancro, Genoa, Italy
| | - Michele Navarra
- Pharmaco-Biological Department, University of Messina, Messina, Italy
| | - Riccardo Cavaliere
- Laboratory of Immunology and Biotherapy, Department of Human Pathology, University of Messina, Messina, Italy
| | - Elisabetta Traggiai
- Istituto Giannina Gaslini, Genoa, Italy
- Centro di Eccellenza per la Ricerca Biomedica (CERB), University of Genoa, Genoa, Italy
- Department of Pediatrics, University of Genoa, Genoa, Italy
| | - Marco Gattorno
- Istituto Giannina Gaslini, Genoa, Italy
- Department of Pediatrics, University of Genoa, Genoa, Italy
| | - Alberto Martini
- Istituto Giannina Gaslini, Genoa, Italy
- Department of Pediatrics, University of Genoa, Genoa, Italy
| | - Maria Cristina Mingari
- Department of Experimental Medicine (DIMES), University of Genoa, Genoa, Italy
- Istituto Nazionale per la Ricerca sul Cancro, Genoa, Italy
| | - Alessandro Moretta
- Department of Experimental Medicine (DIMES), University of Genoa, Genoa, Italy
- Centro di Eccellenza per la Ricerca Biomedica (CERB), University of Genoa, Genoa, Italy
| | - Guido Ferlazzo
- Laboratory of Immunology and Biotherapy, Department of Human Pathology, University of Messina, Messina, Italy
- * E-mail:
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Crystal structure and collagen-binding site of immune inhibitory receptor LAIR-1: unexpected implications for collagen binding by platelet receptor GPVI. Blood 2010; 115:1364-73. [DOI: 10.1182/blood-2009-10-246322] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Abstract
Leukocyte-associated immunoglobulin-like receptor-1 (LAIR-1), one of the most widely spread immune receptors, attenuates immune cell activation when bound to specific sites in collagen. The collagen-binding domain of LAIR-1 is homologous to that of glycoprotein VI (GPVI), a collagen receptor crucial for platelet activation. Because LAIR-1 and GPVI also display overlapping collagen-binding specificities, a common structural basis for collagen recognition would appear likely. Therefore, it is crucial to gain insight into the molecular interaction of both receptors with their ligand to prevent unwanted cross-reactions during therapeutic intervention. We determined the crystal structure of LAIR-1 and mapped its collagen-binding site by nuclear magnetic resonance (NMR) titrations and mutagenesis. Our data identify R59, E61, and W109 as key residues for collagen interaction. These residues are strictly conserved in LAIR-1 and GPVI alike; however, they are located outside the previously proposed GPVI collagen-binding site. Our data provide evidence for an unanticipated mechanism of collagen recognition common to LAIR-1 and GPVI. This fundamental insight will contribute to the exploration of specific means of intervention in collagen-induced signaling in immunity and hemostasis.
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Omiya R, Tsushima F, Narazaki H, Sakoda Y, Kuramasu A, Kim Y, Xu H, Tamura H, Zhu G, Chen L, Tamada K. Leucocyte-associated immunoglobulin-like receptor-1 is an inhibitory regulator of contact hypersensitivity. Immunology 2009; 128:543-55. [PMID: 19930044 PMCID: PMC2792138 DOI: 10.1111/j.1365-2567.2009.03140.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2009] [Revised: 05/18/2009] [Accepted: 05/21/2009] [Indexed: 12/19/2022] Open
Abstract
Leucocyte-associated immunoglobulin-like receptor-1 (LAIR-1) is a membrane receptor of the immunoglobulin (Ig) superfamily that is expressed on most types of haematopoietic cells, and delivers inhibitory signals through interacting with collagens. In order to elucidate the immunological functions of LAIR-1 in vivo, we established transgenic mice expressing a chimeric protein composed of the extracellular domain of LAIR-1 fused with an Ig tag (LAIR-1-Ig), which acts as a decoy by competing with endogenous LAIR-1. The transgenic mice showed an increased susceptibility for development of contact hypersensitivity (CHS), an experimental model of allergic contact dermatitis, in association with enhanced hapten-specific T-cell responses. When T cells from the hapten-sensitized donor mice were transferred into non-sensitized recipients, treatment of either donor mice or recipient mice with LAIR-1-Ig protein accelerated CHS, suggesting a potentially negative role of LAIR-1 in both the sensitization and the elicitation of hapten-reactive T cells. In vitro assays revealed that LAIR-1 decreased the production of interleukin-6 and interleukin-12 in dendritic cells, and inhibited the proliferation and cytokine production of naïve and memory T cells along with G(0)/G(1) cell cycle arrest. Collectively, our findings suggest that LAIR-1 plays a crucial inhibitory role in CHS by regulating antigen-presenting cell and T-cell functions.
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Affiliation(s)
- Ryusuke Omiya
- Marlene and Stewart Greenebaum Cancer Center, University of Maryland, Baltimore, MD, USA
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Tuomisto A, Sund M, Tahkola J, Latvanlehto A, Savolainen ER, Autio-Harmainen H, Liakka A, Sormunen R, Vuoristo J, West A, Lahesmaa R, Morse HC, Pihlajaniemi T. A mutant collagen XIII alters intestinal expression of immune response genes and predisposes transgenic mice to develop B-cell lymphomas. Cancer Res 2009; 68:10324-32. [PMID: 19074901 DOI: 10.1158/0008-5472.can-08-2582] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Epithelial cells of mucosal surfaces are critical for maintaining immune homeostasis by aiding in the discrimination of pathogenic and commensal microorganisms and modulating the activities of antigen-presenting cells and lymphocytes. Functional breakdowns resulting in chronic infection and inflammation are associated with the development of hematologic and solid neoplasms for which detailed pathogenetic mechanisms are poorly understood. Mice heterozygous for a transgene Col13a1(del) expressing a mutant collagen XIII developed clonal mature B-cell lineage lymphomas originating in mesenteric lymph nodes (MLN). The tumors were associated with T cells and macrophages. The incidence of disease was reduced 2-fold in transgenic mice raised under specific pathogen-free conditions, suggesting a role for infectious agents. The lymphomas did not express the mutant collagen XIII, indicating that its influence on tumorigenesis was B-cell extrinsic and likely to be associated with collagen XIII-positive tissues drained by the MLN. Studies of the small intestines of transgenic mice showed that the subepithelial basement membranes (BM) were highly abnormal and that they exhibited heightened expression of genes involved in immune responses. These results define collagen XIII-dependent maintenance of the intestinal BM as a previously unappreciated component of immune responses and a critical determinant of cancer susceptibility.
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Affiliation(s)
- Anne Tuomisto
- Department of Medical Biochemistry, Oulu Center for Cell-Matrix Research, Institute of Biomedicine, University of Oulu, Oulu, Finland
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Lebbink RJ, van den Berg MCW, de Ruiter T, Raynal N, van Roon JAG, Lenting PJ, Jin B, Meyaard L. The soluble leukocyte-associated Ig-like receptor (LAIR)-2 antagonizes the collagen/LAIR-1 inhibitory immune interaction. THE JOURNAL OF IMMUNOLOGY 2008; 180:1662-9. [PMID: 18209062 DOI: 10.4049/jimmunol.180.3.1662] [Citation(s) in RCA: 107] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Leukocyte-associated Ig-like receptor (LAIR)-1 is a collagen-receptor that inhibits immune cell function upon collagen binding. Next to LAIR-1, the human genome encodes LAIR-2, a putative soluble homolog. In this study we show, for the first time, that the LAIR-2 gene is broadly transcribed in human PBMC, mirroring the expression profile of LAIR-1. LAIR-2 protein is expressed as a soluble receptor exhibiting high affinity for various collagen molecules to which it binds in a hydroxyproline-dependent manner. In vitro stimulation of PBMC induces secretion of LAIR-2. We detect high amounts of LAIR-2 in urine of pregnant women, indicating that the soluble receptor is indeed produced in vivo and can be cleared from the body via urine. Furthermore, LAIR-2 levels are increased in synovial fluid of patients with rheumatoid arthritis as compared with osteoarthritis patients. We hypothesize that soluble LAIR-2 may function as a natural competitor for LAIR-1, thereby regulating its inhibitory potential. Indeed, LAIR-2 prevents binding of human LAIR-1 to collagens and LAIR-1 cross-linking in vitro, suggesting that the protein has an immunoregulatory function in vivo. Hence, we reveal a novel mechanism of immune regulation by a soluble LAIR receptor regulating the inhibitory potential of the membrane-bound LAIR-1 via competition for ligands.
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Affiliation(s)
- Robert Jan Lebbink
- Department of Immunology, University Medical Center Utrecht, Lundlaan 6, Utrecht, The Netherlands
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The inhibitory receptor LILRB1 modulates the differentiation and regulatory potential of human dendritic cells. Blood 2008; 111:3090-6. [DOI: 10.1182/blood-2007-05-089771] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Abstract
Dendritic cells (DCs) link innate and adaptive immunity, initiating and regulating effector cell responses. They ubiquitously express members of the LILR (ILT, LIR, CD85) family of molecules, some of which recognize self-HLA molecules, but little is known of their possible functions in DC biology. We demonstrate that the inhibitory receptor LILRB1 (ILT2, LIR1, CD85j) is selectively up-regulated during DC differentiation from monocyte precursors in culture. Continuous ligation of LILRB1 modulated cellular differentiation, conferred a unique phenotype upon the resultant cells, induced a profound resistance to CD95-mediated cell death, and inhibited secretion of cytokines IL-10, IL-12p70, and TGF-β. These features remained stable even after exposure of the cells to bacterial LPS. Ligated DCs exhibited poor stimulatory activity for primary and memory T-cell proliferative responses, but this was substantially reversed by blockade of CD80 or its preferred ligand CTLA-4, or by depleting CD4+ CD25+ CD127lo regulatory T cells. Our findings suggest that ligation of LILRB1 on DCs by self-HLA molecules may play a key role in controlling the balance between the induction and suppression of adaptive immune responses.
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Lack of the leukocyte-associated Ig-like receptor-1 expression in high-risk chronic lymphocytic leukaemia results in the absence of a negative signal regulating kinase activation and cell division. Leukemia 2008; 22:980-8. [PMID: 18288129 DOI: 10.1038/leu.2008.21] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
In this study, we analysed 30 patients with B-cell chronic lymphocytic leukaemia (CLL), compared with 10 healthy donors, for the expression and function of the leukocyte-associated Ig-like receptor-1 (LAIR-1). LAIR-1 is an inhibitory receptor containing a cytoplasmic tyrosine-based inhibitory motif (ITIM) that binds to the SH2 domain of phosphatases, leading to dephosphorylation of different kinases. Constitutive activation of c-Jun aminoterminal kinase (JNK), p38 mitogen-activated protein kinase and extracellular signal-regulated kinase, has been reported in CLL. We show that LAIR-1 is absent in high-risk (HR) CLL and differently expressed on intermediate- and low-risk CLL and the intensity of expression, which is always significantly lower than in healthy donors, correlates with disease stage and progression. Interestingly, both constitutive and sIgM-induced phosphorylation of p38 and JNK is inhibited by LAIR-1 through an ITIM-dependent signal, as demonstrated by the use of specific ITIM-binding peptides; importantly, this inhibitory signal is missing when LAIR-1 is not expressed as occurs in HR CLL. Moreover, engagement of LAIR-1 blocks constitutive and sIgM-induced Akt phosphorylation, besides nuclear factor kappa-B nuclear translocation, and prevents CLL division. These results suggest that CLL lacking LAIR-1 may miss one of the molecular mechanisms controlling B-cell activation and proliferation.
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Wang CY, Zhang Y, Wang DL, Song CJ, Han WN, Yang K, Jin BQ. Generation of Rat Monoclonal Antibodies Against Murine LAIR-1. Hybridoma (Larchmt) 2007; 26:316-21. [DOI: 10.1089/hyb.2007.0509] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Chun-Yan Wang
- Department of Immunology, Fourth Military Medical University, Xi'an, China
| | - Yuan Zhang
- Department of Immunology, Fourth Military Medical University, Xi'an, China
| | - Dong-Lin Wang
- Department of Immunology, Fourth Military Medical University, Xi'an, China
| | - Chao-Jun Song
- Department of Immunology, Fourth Military Medical University, Xi'an, China
| | - Wei-Ning Han
- Department of Immunology, Fourth Military Medical University, Xi'an, China
| | - Kun Yang
- Department of Immunology, Fourth Military Medical University, Xi'an, China
| | - Bo-Quan Jin
- Department of Immunology, Fourth Military Medical University, Xi'an, China
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Lebbink RJ, de Ruiter T, Kaptijn GJA, Bihan DG, Jansen CA, Lenting PJ, Meyaard L. Mouse leukocyte-associated Ig-like receptor-1 (mLAIR-1) functions as an inhibitory collagen-binding receptor on immune cells. Int Immunol 2007; 19:1011-9. [PMID: 17702987 DOI: 10.1093/intimm/dxm071] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Leukocyte-associated Ig-like receptor-1 (LAIR-1) is a cell-surface molecule that functions as an inhibitory receptor on various immune cells. We developed mAbs to study the expression of mouse leukocyte-associated Ig-like receptor-1 (mLAIR-1) on primary immune cells and established that it is expressed on the majority of cells of the immune system, including T cells, NK cells, monocytes and dendritic cells. Furthermore, mLAIR-1 is inducibly expressed on blood granulocytes in vivo and is differentially expressed upon T cell activation in vitro. Unexpectedly, mLAIR-1 was not expressed on splenic and blood B220(+) B cells. Similar to its human homolog, mLAIR-1 interacted with high affinity with a wide range of collagen molecules. Furthermore, mLAIR-1 specifically interacted in a hydroxyproline-dependent manner with synthetic collagen Gly-Pro-Hyp peptides. We show, for the first time, that mLAIR-1 cross-linking with its ligands inhibits CD3-induced T cell stimulation in vitro. Given the similarities between the mouse and human receptors, mLAIR-1 may serve as a good model to assess the role of the LAIR-1 receptors in regulation of immune responses.
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Affiliation(s)
- Robert Jan Lebbink
- Department of Immunology, University Medical Center Utrecht, Lundlaan 6, 3584 EA Utrecht, The Netherlands
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47
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Jansen CA, Cruijsen CWA, de Ruiter T, Nanlohy N, Willems N, Janssens-Korpela PL, Meyaard L. Regulated expression of the inhibitory receptor LAIR-1 on human peripheral T cells during T cell activation and differentiation. Eur J Immunol 2007; 37:914-24. [PMID: 17330824 DOI: 10.1002/eji.200636678] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The leukocyte-associated Ig-like receptor-1 (LAIR-1) is capable of inhibiting immune cell function through interaction with collagens. LAIR is expressed on the majority of peripheral blood mononuclear cells. The abundant expression of both receptor and ligand calls for regulatory mechanisms to relieve the continuous interaction between collagens and LAIR-1. This regulation may occur at the expression level of the receptor. Here, we report that LAIR-1 is indeed differentially expressed during human T cell differentiation. Naive CD4(+) and CD8(+) T cells as well as CD8(+) T cells of the effector phenotype express higher levels of LAIR-1 compared to memory T cells. In vitro stimulation revealed a decrease in LAIR-1 expression upon activation, and the lower LAIR-1 expression on CD127(-) T cells suggests that activation-induced down-modulation of LAIR-1 may also occur in vivo. Furthermore, crosslinking of LAIR-1 on primary T cells results in an inhibition of T cell function. Our data suggest that regulated expression of LAIR-1 and the subsequent change in the threshold for activation may be a mechanism to modulate inhibition of the immune system.
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Affiliation(s)
- Christine A Jansen
- Department of Immunology, University Medical Center, Utrecht, The Netherlands
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48
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Lebbink RJ, de Ruiter T, Adelmeijer J, Brenkman AB, van Helvoort JM, Koch M, Farndale RW, Lisman T, Sonnenberg A, Lenting PJ, Meyaard L. Collagens are functional, high affinity ligands for the inhibitory immune receptor LAIR-1. ACTA ACUST UNITED AC 2006; 203:1419-25. [PMID: 16754721 PMCID: PMC2118306 DOI: 10.1084/jem.20052554] [Citation(s) in RCA: 242] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Collagens are the most abundant proteins in the human body, important in maintenance of tissue structure and hemostasis. Here we report that collagens are high affinity ligands for the broadly expressed inhibitory leukocyte-associated immunoglobulin-like receptor-1 (LAIR-1). The interaction is dependent on the conserved Gly-Pro-Hyp collagen repeats. Antibody cross-linking of LAIR-1 is known to inhibit immune cell function in vitro. We now show that collagens are functional ligands for LAIR-1 and directly inhibit immune cell activation in vitro. Thus far, all documented ligands for immune inhibitory receptors are membrane molecules, implying a regulatory role in cell–cell interaction. Our data reveal a novel mechanism of peripheral immune regulation by inhibitory immune receptors binding to extracellular matrix collagens.
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Affiliation(s)
- Robert Jan Lebbink
- Department of Immunology, University Medical Center, 3584 EA Utrecht, Netherlands
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Merlo A, Tenca C, Fais F, Battini L, Ciccone E, Grossi CE, Saverino D. Inhibitory receptors CD85j, LAIR-1, and CD152 down-regulate immunoglobulin and cytokine production by human B lymphocytes. CLINICAL AND DIAGNOSTIC LABORATORY IMMUNOLOGY 2006; 12:705-12. [PMID: 15939744 PMCID: PMC1151979 DOI: 10.1128/cdli.12.6.705-712.2005] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Class switching consists in the substitution of the heavy-chain constant region of immunoglobulin M (IgM) with that of IgG, IgA, or IgE. This enables antibodies to acquire new effector functions that are crucial to combat invading pathogens. Class switching usually requires engagement of CD40 on B cells by CD40 ligand (CD40L) on antigen-activated CD4(+) T cells and the production of cytokines. The process must be regulated tightly because abnormal IgG and IgA production favors the onset of autoimmunity, whereas increased switching to IgE leads to atopy. These inflammatory disorders can be triggered or exacerbated by costimulatory signals. Although thoroughly investigated on T cells, the roles of the inhibitory receptors CD85j, LAIR-1, and CD152 on B-cell functions have not been fully elucidated. In this study we show that cross-linking of the B-cell inhibitory receptors by specific monoclonal antibodies inhibits IgG and IgE production, reduces the percentage of IgG- and IgE-expressing B cells, and down-regulates interleukin 8 (IL-8), IL-10, and tumor necrosis factor alpha production. These effects were demonstrated using different B-cell stimulatory pathways (recall antigens, CD40L-transfected cells plus IL-4, and lipopolysaccharide plus IL-4). It thus appears that CD85j, LAIR-1, and CD152 play a central role for the control of IL-4-driven isotype switching.
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Affiliation(s)
- Andrea Merlo
- Department of Experimental Medicine, Institute of Human Anatomy, University of Genova, Via De Toni 14, 16132 Genova, Italy
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Verbrugge A, Rijkers ESK, de Ruiter T, Meyaard L. Leukocyte-associated Ig-like receptor-1 has SH2 domain-containing phosphatase-independent function and recruits C-terminal Src kinase. Eur J Immunol 2006; 36:190-8. [PMID: 16380958 DOI: 10.1002/eji.200535226] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Most inhibitory receptors in the immune system contain one or several immunoreceptor tyrosine-based inhibitory motifs (ITIM) and recruit the SH2 domain-containing phosphatases SHP-1, SHP-2 and/or SHIP, which are generally believed to be essential for the inhibitory function. However, it has not been systematically investigated whether ITIM-bearing receptors exert their function through alternative interactions. Here we describe that leukocyte-associated Ig-like receptor (LAIR)-1 has inhibitory function in DT40 chicken B cells that lack both SHP-1 and SHP-2. In addition, we found that LAIR-1 did not recruit SHIP upon phosphorylation. Thus, LAIR-1 can function independently from SH2 domain-containing phosphatases and must recruit at least one other signaling molecule. Using a yeast-tri-hybrid system, we found that phosphorylated LAIR-1 bound the C-terminal Src kinase (Csk). The interaction required the SH2 domain of Csk and phosphorylation of the tyrosine in the N-terminal ITIM of LAIR-1. We propose that Csk is an additional player in the regulation of the immune system by ITIM-bearing receptors.
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Affiliation(s)
- Annelies Verbrugge
- Department of Immunology, University Medical Center Utrecht, Utrecht,The Netherlands
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