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L’Estrange-Stranieri E, Gottschalk TA, Wright MD, Hibbs ML. The dualistic role of Lyn tyrosine kinase in immune cell signaling: implications for systemic lupus erythematosus. Front Immunol 2024; 15:1395427. [PMID: 39007135 PMCID: PMC11239442 DOI: 10.3389/fimmu.2024.1395427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2024] [Accepted: 06/17/2024] [Indexed: 07/16/2024] Open
Abstract
Systemic lupus erythematosus (SLE, lupus) is a debilitating, multisystem autoimmune disease that can affect any organ in the body. The disease is characterized by circulating autoantibodies that accumulate in organs and tissues, which triggers an inflammatory response that can cause permanent damage leading to significant morbidity and mortality. Lyn, a member of the Src family of non-receptor protein tyrosine kinases, is highly implicated in SLE as remarkably both mice lacking Lyn or expressing a gain-of-function mutation in Lyn develop spontaneous lupus-like disease due to altered signaling in B lymphocytes and myeloid cells, suggesting its expression or activation state plays a critical role in maintaining tolerance. The past 30 years of research has begun to elucidate the role of Lyn in a duplicitous signaling network of activating and inhibitory immunoreceptors and related targets, including interactions with the interferon regulatory factor family in the toll-like receptor pathway. Gain-of-function mutations in Lyn have now been identified in human cases and like mouse models, cause severe systemic autoinflammation. Studies of Lyn in SLE patients have presented mixed findings, which may reflect the heterogeneity of disease processes in SLE, with impairment or enhancement in Lyn function affecting subsets of SLE patients that may be a means of stratification. In this review, we present an overview of the phosphorylation and protein-binding targets of Lyn in B lymphocytes and myeloid cells, highlighting the structural domains of the protein that are involved in its function, and provide an update on studies of Lyn in SLE patients.
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Affiliation(s)
- Elan L’Estrange-Stranieri
- Department of Immunology, School of Translational Medicine, Monash University, Melbourne, VIC, Australia
| | - Timothy A. Gottschalk
- Department of Immunology, School of Translational Medicine, Monash University, Melbourne, VIC, Australia
- Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Clayton, VIC, Australia
- Department of Molecular and Translational Science, Monash University, Clayton, VIC, Australia
| | - Mark D. Wright
- Department of Immunology, School of Translational Medicine, Monash University, Melbourne, VIC, Australia
| | - Margaret L. Hibbs
- Department of Immunology, School of Translational Medicine, Monash University, Melbourne, VIC, Australia
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Díaz-Alvarez L, Martínez-Sánchez ME, Gray E, Pérez-Figueroa E, Ortega E. Aminopeptidase N/CD13 Crosslinking Promotes the Activation and Membrane Expression of Integrin CD11b/CD18. Biomolecules 2023; 13:1488. [PMID: 37892170 PMCID: PMC10604325 DOI: 10.3390/biom13101488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 09/21/2023] [Accepted: 09/22/2023] [Indexed: 10/29/2023] Open
Abstract
The β2 integrin CD11b/CD18, also known as complement receptor 3 (CR3), and the moonlighting protein aminopeptidase N (CD13), are two myeloid immune receptors with overlapping activities: adhesion, migration, phagocytosis of opsonized particles, and respiratory burst induction. Given their common functions, shared physical location, and the fact that some receptors can activate a selection of integrins, we hypothesized that CD13 could induce CR3 activation through an inside-out signaling mechanism and possibly have an influence on its membrane expression. We revealed that crosslinking CD13 on the surface of human macrophages not only activates CR3 but also influences its membrane expression. Both phenomena are affected by inhibitors of Src, PLCγ, Syk, and actin polymerization. Additionally, after only 10 min at 37 °C, cells with crosslinked CD13 start secreting pro-inflammatory cytokines like interferons type 1 and 2, IL-12p70, and IL-17a. We integrated our data with a bioinformatic analysis to confirm the connection between these receptors and to suggest the signaling cascade linking them. Our findings expand the list of features of CD13 by adding the activation of a different receptor via inside-out signaling. This opens the possibility of studying the joint contribution of CD13 and CR3 in contexts where either receptor has a recognized role, such as the progression of some leukemias.
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Affiliation(s)
- Laura Díaz-Alvarez
- Instituto de Investigaciones Biomédicas, Departamento de Inmunología, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico
- Posgrado en Ciencias Biológicas, Unidad de Posgrado, Edificio D, 1° Piso, Circuito de Posgrados, Ciudad Universitaria, Mexico City 04510, Mexico
| | | | - Eleanor Gray
- London Centre for Nanotechnology, Department of Physics and Astronomy, University College London, London WC2R 2LS, UK
| | - Erandi Pérez-Figueroa
- Laboratorio de Investigación en Inmunología y Proteómica, Hospital Infantil de México Federico Gómez, Mexico City 06720, Mexico
| | - Enrique Ortega
- Instituto de Investigaciones Biomédicas, Departamento de Inmunología, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico
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Barbosa GR, Marana SR, Stolf BS. Characterization of Leishmania ( L.) amazonensis oligopeptidase B and its role in macrophage infection. Parasitology 2022; 149:1411-1418. [PMID: 35703092 PMCID: PMC11010554 DOI: 10.1017/s0031182022000816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 05/09/2022] [Accepted: 05/30/2022] [Indexed: 11/07/2022]
Abstract
Leishmania spp. are parasitic protozoa that cause leishmaniasis, a disease endemic in 98 countries. Leishmania promastigotes are transmitted by the vector and differentiate into amastigotes within phagocytic cells of the vertebrate host. To survive in multiple and hostile environments, the parasite has several virulence factors. Oligopeptidase B (OPB) is a serine peptidase present in prokaryotes, some eukaryotes and some higher plants. It has been considered a virulence factor in trypanosomatids, but only a few studies, performed with Old World species, analysed its role in Leishmania virulence or infectivity.L. (L.) amazonensis is an important agent of cutaneous leishmaniasis in Brazil. The L. (L.) amazonensis OPB encoding gene has been sequenced and analysed in silico but has never been expressed. In this work, we produced recombinant L. (L.) amazonensis OPB and showed that its pH preferences, Km and inhibition patterns are similar to those reported for L. (L.) major and L. (L.) donovani OPBs. Since Leishmania is known to secrete OPB, we performed in vitro infection assays using the recombinant enzyme. Our results showed that active OPB increased in vitro infection by L. (L.) amazonensis when present before and throughout infection. Our findings suggest that OPB is relevant to L. (L.) amazonensis infection, and that potential drugs acting through OPB will probably be effective for Old and New World Leishmania species. OPB inhibitors may eventually be explored for leishmaniasis chemotherapy.
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Affiliation(s)
- Gustavo Rolim Barbosa
- Department of Parasitology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Sandro Roberto Marana
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Beatriz Simonsen Stolf
- Department of Parasitology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
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Yu Y, Zhou Y, Di C, Zhao C, Chen J, Su W, Wu Q, Wu M, Su X, Xia Z. Increased airway epithelial cell-derived exosomes activate macrophage-mediated allergic inflammation via CD100 shedding. J Cell Mol Med 2021; 25:8850-8862. [PMID: 34414666 PMCID: PMC8435458 DOI: 10.1111/jcmm.16843] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Revised: 06/07/2021] [Accepted: 07/15/2021] [Indexed: 01/10/2023] Open
Abstract
Airway epithelial cells (AECs) participate in allergic airway inflammation by producing mediators in response to allergen stimulation. Whether ovalbumin (OVA) challenge promotes exosome release from AECs (OVA‐challenged AEC‐derived exosomes (OAEs)), thereby affecting airway inflammation, as well as the underlying mechanisms, is unknown. Our study showed that AECs released an increased number of exosomes after OVA challenge, and the expression of Plexin B2 (PLXNB2; a natural CD100 ligand) was increased by a massive 85.7‐fold in OAEs than in PBS‐treated AEC‐derived exosomes (PAEs). CD100+F4/80+ macrophages engulfed OAEs to trigger the transcription of pro‐inflammatory chemokines and cytokines. Plxnb2 transcripts increased in asthmatic lungs, and similarly, PLXNB2 protein was highly enriched in exosomes purified from asthmatic bronchoalveolar lavage (BAL) fluid. Furthermore, aspiration of PLXNB2 or OAEs increased the recruitment of lung neutrophils, monocytes, eosinophils and dendritic cells in OVA‐challenged mice. Mechanistically, OAE aspiration enhanced the cleavage of CD100 by MMP14, which manifested as an increase in the soluble CD100 (sCD100) level in BAL fluid and lung homogenates. Knockdown of Mmp14 in macrophages prevented the cleavage of CD100 and reduced Ccl2, Ccl5 and Cxcl2 transcription. These data indicate that PLXNB2‐containing OAEs aggravate airway asthmatic inflammation via cleavage of CD100 by MMP14, suggesting potential therapeutic targets of OAE‐mediated asthma exacerbations.
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Affiliation(s)
- Yi Yu
- Department of Pediatrics, Ruijin Hospital, Shanghai Jiao-tong University School of Medicine, Shanghai, China
| | - Yao Zhou
- Department of Pediatrics, Ruijin Hospital, Shanghai Jiao-tong University School of Medicine, Shanghai, China
| | - Caixia Di
- Department of Pediatrics, Ruijin Hospital, Shanghai Jiao-tong University School of Medicine, Shanghai, China
| | - Caiqi Zhao
- Unit of Respiratory Infection and Immunity, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, China
| | - Jie Chen
- Unit of Respiratory Infection and Immunity, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, China
| | - Wen Su
- Department of Pediatrics, Ruijin Hospital, Shanghai Jiao-tong University School of Medicine, Shanghai, China
| | - Qun Wu
- Department of Pediatrics, Ruijin Hospital, Shanghai Jiao-tong University School of Medicine, Shanghai, China
| | - Min Wu
- School of Medicine and Health Sciences, Department of Biomedical Sciences, University of North Dakota, Grand Forks, ND, USA
| | - Xiao Su
- Unit of Respiratory Infection and Immunity, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, China
| | - Zhenwei Xia
- Department of Pediatrics, Ruijin Hospital, Shanghai Jiao-tong University School of Medicine, Shanghai, China
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Ni SH, Xu JD, Sun SN, Li Y, Zhou Z, Li H, Liu X, Deng JP, Huang YS, Chen ZX, Feng WJ, Wang JJ, Xian SX, Yang ZQ, Wang S, Wang LJ, Lu L. Single-cell transcriptomic analyses of cardiac immune cells reveal that Rel-driven CD72-positive macrophages induce cardiomyocyte injury. Cardiovasc Res 2021; 118:1303-1320. [PMID: 34100920 DOI: 10.1093/cvr/cvab193] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Accepted: 06/03/2021] [Indexed: 12/13/2022] Open
Abstract
AIMS The goal of our study was to investigate the heterogeneity of cardiac macrophages (CMφs) in mice with transverse aortic constriction (TAC) via single-cell sequencing and identify a subset of macrophages associated with heart injury. METHODS AND RESULTS We selected all CMφs from CD45+ cells using single-cell mRNA sequencing data. Through dimension reduction, clustering and enrichment analyses, CD72hi CMφs were identified as a subset of proinflammatory macrophages. The pseudotime trajectory and ChIP-Seq analyses identified Rel as the key transcription factor that induces CD72hi CMφ differentiation. Rel KD and Rel-/- bone marrow chimera mice subjected to TAC showed features of mitigated cardiac injury, including decreased levels of cytokines and ROS, which prohibited cardiomyocyte death. The transfer of adoptive Rel-overexpressing monocytes and CD72hi CMφ injection directly aggravated heart injury in the TAC model. The CD72hi macrophages also exerted proinflammatory and cardiac injury effects associated with myocardial infarction (MI). In humans, patients with heart failure exhibit increased CD72hi CMφ levels following dilated cardiomyopathy (DCM) and ischemic cardiomyopathy (ICM). CONCLUSION Bone marrow-derived, Rel-mediated CD72hi macrophages play a proinflammatory role, induce cardiac injury and, thus, may serve as a therapeutic target for multiple cardiovascular diseases. TRANSLATIONAL PERSPECTIVE Heart failure (HF) imposes an enormous clinical and economic burden worldwide and presents limited therapeutic approaches. Given the close association between inflammation and adverse outcomes, proinflammatory immune cells are considered potential therapeutic targets for HF treatment. The present studies identified a specific macrophage subset associated with myocardial injury, which may provide an alternative approach for treating cardiovascular diseases.
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Affiliation(s)
- Shi-Hao Ni
- The First Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou 510407, China.,Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou 510407, China.,Key Laboratory of Chronic Heart Failure, Guangzhou University of Chinese Medicine, Guangzhou 510407, China
| | - Jin-Dong Xu
- Department of Anesthesiology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510000, China
| | - Shu-Ning Sun
- The First Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou 510407, China.,Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou 510407, China.,Key Laboratory of Chronic Heart Failure, Guangzhou University of Chinese Medicine, Guangzhou 510407, China
| | - Yue Li
- The First Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou 510407, China.,Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou 510407, China.,Key Laboratory of Chronic Heart Failure, Guangzhou University of Chinese Medicine, Guangzhou 510407, China
| | - Zheng Zhou
- The First Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou 510407, China.,Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou 510407, China.,Key Laboratory of Chronic Heart Failure, Guangzhou University of Chinese Medicine, Guangzhou 510407, China
| | - Huan Li
- The First Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou 510407, China.,Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou 510407, China.,Key Laboratory of Chronic Heart Failure, Guangzhou University of Chinese Medicine, Guangzhou 510407, China
| | - Xin Liu
- The First Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou 510407, China.,Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou 510407, China.,Key Laboratory of Chronic Heart Failure, Guangzhou University of Chinese Medicine, Guangzhou 510407, China
| | - Jian-Ping Deng
- The First Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou 510407, China.,Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou 510407, China.,Key Laboratory of Chronic Heart Failure, Guangzhou University of Chinese Medicine, Guangzhou 510407, China
| | - Yu-Sheng Huang
- The First Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou 510407, China.,Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou 510407, China.,Key Laboratory of Chronic Heart Failure, Guangzhou University of Chinese Medicine, Guangzhou 510407, China
| | - Zi-Xin Chen
- The First Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou 510407, China.,Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou 510407, China.,Key Laboratory of Chronic Heart Failure, Guangzhou University of Chinese Medicine, Guangzhou 510407, China
| | - Wen-Jun Feng
- The First Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou 510407, China
| | - Jia-Jia Wang
- The First Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou 510407, China.,Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou 510407, China.,Key Laboratory of Chronic Heart Failure, Guangzhou University of Chinese Medicine, Guangzhou 510407, China
| | - Shao-Xiang Xian
- The First Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou 510407, China.,Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou 510407, China.,Key Laboratory of Chronic Heart Failure, Guangzhou University of Chinese Medicine, Guangzhou 510407, China
| | - Zhong-Qi Yang
- The First Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou 510407, China.,Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou 510407, China.,Key Laboratory of Chronic Heart Failure, Guangzhou University of Chinese Medicine, Guangzhou 510407, China
| | - Sheng Wang
- Department of Anesthesiology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510000, China
| | - Ling-Jun Wang
- The First Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou 510407, China.,Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou 510407, China.,Key Laboratory of Chronic Heart Failure, Guangzhou University of Chinese Medicine, Guangzhou 510407, China
| | - Lu Lu
- The First Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou 510407, China.,Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou 510407, China.,Key Laboratory of Chronic Heart Failure, Guangzhou University of Chinese Medicine, Guangzhou 510407, China
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Luque MCA, Galuppo MK, Capelli-Peixoto J, Stolf BS. CD100 Effects in Macrophages and Its Roles in Atherosclerosis. Front Cardiovasc Med 2018; 5:136. [PMID: 30324109 PMCID: PMC6173139 DOI: 10.3389/fcvm.2018.00136] [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] [Received: 06/01/2018] [Accepted: 09/07/2018] [Indexed: 12/31/2022] Open
Abstract
CD100 or Sema4D is a protein from the semaphorin family with important roles in the vascular, nervous and immune systems. It may be found as a membrane bound dimer or as a soluble molecule originated by proteolytic cleavage. Produced by the majority of hematopoietic cells including B and T lymphocytes, natural killer and myeloid cells, as well as endothelial cells, CD100 exerts its actions by binding to different receptors depending on the cell type and on the organism. Cell-to-cell adhesion, angiogenesis, phagocytosis, T cell priming, and antibody production are examples of the many functions of this molecule. Of note, high CD100 serum levels has been found in inflammatory as well as in infectious diseases, but the roles of the protein in the pathogenesis of these diseases has still to be clarified. Macrophages are highly heterogeneous cells present in almost all tissues, which may change their functions in response to microenvironmental conditions. They are key players in the innate and adaptive immune responses and have decisive roles in sterile conditions but also in several diseases such as atherosclerosis, autoimmunity, tumorigenesis, and antitumor responses, among others. Although it is known that macrophages express CD100 and its receptors, few studies have focused on the role of this semaphorin in this cell type or in macrophage-associated diseases. The aim of this review is to critically revise the available data about CD100 and atherosclerosis, with special emphasis on its roles in macrophages and monocytes. We will also describe the few available data on treatments with anti-CD100 antibodies in different diseases. We hope that this review stimulates future studies on the effects of such an important molecule in a cell type with decisive roles in inflammatory diseases such as atherosclerosis.
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Affiliation(s)
- Maria C A Luque
- Heart Institute, Universidade de São Paulo, São Paulo, Brazil
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