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Bouzazi D, Mami W, Mosbah A, Marrakchi N, Ben Ahmed M, Messadi E. Natriuretic-like Peptide Lebetin 2 Mediates M2 Macrophage Polarization in LPS-Activated RAW264.7 Cells in an IL-10-Dependent Manner. Toxins (Basel) 2023; 15:toxins15040298. [PMID: 37104236 PMCID: PMC10142756 DOI: 10.3390/toxins15040298] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 04/08/2023] [Accepted: 04/12/2023] [Indexed: 04/28/2023] Open
Abstract
Snake natriuretic peptide (NP) Lebetin 2 (L2) has been shown to improve cardiac function and reduce fibrosis as well as inflammation by promoting M2-type macrophages in a reperfused myocardial infarction (MI) model. However, the inflammatory mechanism of L2 remains unclear. Therefore, we investigated the effect of L2 on macrophage polarization in lipopolysaccharide (LPS)-activated RAW264.7 cells in vitro and explored the associated underlying mechanisms. TNF-α, IL-6 and IL-10 levels were assessed using an ELISA assay, and M2 macrophage polarization was determined by flow cytometry. L2 was used at non-cytotoxic concentrations determined by a preliminary MTT cell viability assay, and compared to B-type natriuretic peptide (BNP). In LPS-activated cells, both peptides reduced TNF-α and IL-6 release compared to controls. However, only L2 increased IL-10 release in a sustained manner and promoted downstream M2 macrophage polarization. Pretreatment of LPS-activated RAW264.7 cells with the selective NP receptor (NPR) antagonist isatin abolished both IL-10 and M2-like macrophage potentiation provided by L2. In addition, cell pretreatment with the IL-10 inhibitor suppressed L2-induced M2 macrophage polarization. We conclude that L2 exerts an anti-inflammatory response to LPS by regulating the release of inflammatory cytokines via stimulating of NP receptors and promoting M2 macrophage polarization through activation of IL-10 signaling.
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Affiliation(s)
- Dorsaf Bouzazi
- Plateforme de Physiologie et Physiopathologie Cardiovasculaires (P2C), Laboratoire des Biomolécules, Venins et Applications Théranostiques (LR20IPT01), Institut Pasteur de Tunis, Université Tunis El Manar, Tunis 1068, Tunisia
| | - Wael Mami
- Plateforme de Physiologie et Physiopathologie Cardiovasculaires (P2C), Laboratoire des Biomolécules, Venins et Applications Théranostiques (LR20IPT01), Institut Pasteur de Tunis, Université Tunis El Manar, Tunis 1068, Tunisia
| | - Amor Mosbah
- Laboratory of Biotechnology and Bio-Geo Resources Valorization (LR11ES31), Higher Institute of Biotechnology of Sidi Thabet (ISBST), University of Manouba, Tunis 2010, Tunisia
| | - Naziha Marrakchi
- Plateforme de Physiologie et Physiopathologie Cardiovasculaires (P2C), Laboratoire des Biomolécules, Venins et Applications Théranostiques (LR20IPT01), Institut Pasteur de Tunis, Université Tunis El Manar, Tunis 1068, Tunisia
| | - Melika Ben Ahmed
- Laboratoire de Transmission, Department of Clinical Immunology, Contrôle et Immunobiologie des Infections, Institut Pasteur de Tunis, Université Tunis El Manar, Tunis 1068, Tunisia
| | - Erij Messadi
- Plateforme de Physiologie et Physiopathologie Cardiovasculaires (P2C), Laboratoire des Biomolécules, Venins et Applications Théranostiques (LR20IPT01), Institut Pasteur de Tunis, Université Tunis El Manar, Tunis 1068, Tunisia
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Zhang J, Ding W, Liu J, Wan J, Wang M. Scavenger Receptors in Myocardial Infarction and Ischemia/Reperfusion Injury: The Potential for Disease Evaluation and Therapy. J Am Heart Assoc 2023; 12:e027862. [PMID: 36645089 PMCID: PMC9939064 DOI: 10.1161/jaha.122.027862] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Scavenger receptors (SRs) are a structurally heterogeneous superfamily of evolutionarily conserved receptors that are divided into classes A to J. SRs can recognize multiple ligands, such as modified lipoproteins, damage-associated molecular patterns, and pathogen-associated molecular patterns, and regulate lipid metabolism, immunity, and homeostasis. According to the literature, SRs may play a critical role in myocardial infarction and ischemia/reperfusion injury, and the soluble types of SRs may be a series of promising biomarkers for the diagnosis and prognosis of patients with acute coronary syndrome or acute myocardial infarction. In this review, we briefly summarize the structure and function of SRs and discuss the association between each SR and ischemic cardiac injury in patients and animal models in detail. A better understanding of the effect of SRs on ischemic cardiac injury will inspire novel ideas for therapeutic drug discovery and disease evaluation in patients with myocardial infarction.
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Affiliation(s)
- Jishou Zhang
- Department of CardiologyRenmin Hospital of Wuhan UniversityWuhanChina,Cardiovascular Research InstituteWuhan UniversityWuhanChina,Hubei Key Laboratory of CardiologyWuhanChina
| | - Wen Ding
- Department of RadiologyThe First Affiliated Hospital, Zhejiang University School of MedicineHangzhouChina
| | - Jianfang Liu
- Department of CardiologyRenmin Hospital of Wuhan UniversityWuhanChina,Cardiovascular Research InstituteWuhan UniversityWuhanChina,Hubei Key Laboratory of CardiologyWuhanChina
| | - Jun Wan
- Department of CardiologyRenmin Hospital of Wuhan UniversityWuhanChina,Cardiovascular Research InstituteWuhan UniversityWuhanChina,Hubei Key Laboratory of CardiologyWuhanChina
| | - Menglong Wang
- Department of CardiologyRenmin Hospital of Wuhan UniversityWuhanChina,Cardiovascular Research InstituteWuhan UniversityWuhanChina,Hubei Key Laboratory of CardiologyWuhanChina
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Jin X, Wang X, Sun J, Tan W, Zhang G, Han J, Xie M, Zhou L, Yu Z, Xu T, Wang C, Wang Y, Zhou X, Jiang H. Subthreshold splenic nerve stimulation prevents myocardial Ischemia-Reperfusion injury via neuroimmunomodulation of proinflammatory factor levels. Int Immunopharmacol 2023; 114:109522. [PMID: 36502595 DOI: 10.1016/j.intimp.2022.109522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 11/16/2022] [Accepted: 11/25/2022] [Indexed: 12/13/2022]
Abstract
OBJECTIVES Clinical outcomes following myocardial ischemia-reperfusion (I/R) injury are strongly related to the intensity and duration of inflammation. The splenic nerve (SpN) is indispensable for the anti-inflammatory reflex. This study aimed to investigate whether splenic nerve stimulation (SpNS) plays a cardioprotective role in myocardial I/R injury and the potential underlying mechanism. METHODS Sprague-Dawley rats were randomly divided into four groups: sham group, I/R group, SpNS group, and I/R plus SpNS group. The highest SpNS intensity that did not influence heart rate was identified, and SpNS at this intensity was used as the subthreshold stimulus. Continuous subthreshold SpNS was applied for 1 h before ligation of the left coronary artery for 45 min. After 72 h of reperfusion, samples were collected for analysis. RESULTS SpN activity and splenic concentrations of cholinergic anti-inflammatory pathway (CAP)-related neurotransmitters were significantly increased by SpNS. The infarct size, oxidative stress, sympathetic tone, and the levels of proinflammatory cytokines, including TNF-α, IL-1β, and IL-6, were significantly reduced in rats subjected to subthreshold SpNS after myocardial I/R injury compared with those subjected to I/R injury alone. CONCLUSIONS Subthreshold SpNS ameliorates myocardial damage, the inflammatory response, and cardiac remodelling induced by myocardial I/R injury via neuroimmunomodulation of proinflammatory factor levels. SpNS is a potential therapeutic strategy for the treatment of myocardial I/R injury.
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Affiliation(s)
- Xiaoxing Jin
- Department of Cardiology, Renmin Hospital of Wuhan University Hubei Key Laboratory of Autonomic Nervous System Modulation Cardiac Autonomic Nervous System Research Center of Wuhan University Taikang Center for Life and Medical Sciences, Wuhan University Institute of Molecular Medicine, Renmin Hospital of Wuhan University Cardiovascular Research Institute, Wuhan University Hubei Key Laboratory of Cardiology, Wuhan 430060, P.R. China
| | - Xiaofei Wang
- Department of Cardiology, Renmin Hospital of Wuhan University Hubei Key Laboratory of Autonomic Nervous System Modulation Cardiac Autonomic Nervous System Research Center of Wuhan University Taikang Center for Life and Medical Sciences, Wuhan University Institute of Molecular Medicine, Renmin Hospital of Wuhan University Cardiovascular Research Institute, Wuhan University Hubei Key Laboratory of Cardiology, Wuhan 430060, P.R. China
| | - Ji Sun
- Department of Cardiology, Renmin Hospital of Wuhan University Hubei Key Laboratory of Autonomic Nervous System Modulation Cardiac Autonomic Nervous System Research Center of Wuhan University Taikang Center for Life and Medical Sciences, Wuhan University Institute of Molecular Medicine, Renmin Hospital of Wuhan University Cardiovascular Research Institute, Wuhan University Hubei Key Laboratory of Cardiology, Wuhan 430060, P.R. China
| | - Wuping Tan
- Department of Cardiology, Renmin Hospital of Wuhan University Hubei Key Laboratory of Autonomic Nervous System Modulation Cardiac Autonomic Nervous System Research Center of Wuhan University Taikang Center for Life and Medical Sciences, Wuhan University Institute of Molecular Medicine, Renmin Hospital of Wuhan University Cardiovascular Research Institute, Wuhan University Hubei Key Laboratory of Cardiology, Wuhan 430060, P.R. China
| | - Guocheng Zhang
- Department of Cardiology, Renmin Hospital of Wuhan University Hubei Key Laboratory of Autonomic Nervous System Modulation Cardiac Autonomic Nervous System Research Center of Wuhan University Taikang Center for Life and Medical Sciences, Wuhan University Institute of Molecular Medicine, Renmin Hospital of Wuhan University Cardiovascular Research Institute, Wuhan University Hubei Key Laboratory of Cardiology, Wuhan 430060, P.R. China
| | - Jiapeng Han
- Department of Cardiology, Renmin Hospital of Wuhan University Hubei Key Laboratory of Autonomic Nervous System Modulation Cardiac Autonomic Nervous System Research Center of Wuhan University Taikang Center for Life and Medical Sciences, Wuhan University Institute of Molecular Medicine, Renmin Hospital of Wuhan University Cardiovascular Research Institute, Wuhan University Hubei Key Laboratory of Cardiology, Wuhan 430060, P.R. China
| | - Mengjie Xie
- Department of Cardiology, Renmin Hospital of Wuhan University Hubei Key Laboratory of Autonomic Nervous System Modulation Cardiac Autonomic Nervous System Research Center of Wuhan University Taikang Center for Life and Medical Sciences, Wuhan University Institute of Molecular Medicine, Renmin Hospital of Wuhan University Cardiovascular Research Institute, Wuhan University Hubei Key Laboratory of Cardiology, Wuhan 430060, P.R. China
| | - Liping Zhou
- Department of Cardiology, Renmin Hospital of Wuhan University Hubei Key Laboratory of Autonomic Nervous System Modulation Cardiac Autonomic Nervous System Research Center of Wuhan University Taikang Center for Life and Medical Sciences, Wuhan University Institute of Molecular Medicine, Renmin Hospital of Wuhan University Cardiovascular Research Institute, Wuhan University Hubei Key Laboratory of Cardiology, Wuhan 430060, P.R. China
| | - Zhiyao Yu
- Department of Cardiology, Renmin Hospital of Wuhan University Hubei Key Laboratory of Autonomic Nervous System Modulation Cardiac Autonomic Nervous System Research Center of Wuhan University Taikang Center for Life and Medical Sciences, Wuhan University Institute of Molecular Medicine, Renmin Hospital of Wuhan University Cardiovascular Research Institute, Wuhan University Hubei Key Laboratory of Cardiology, Wuhan 430060, P.R. China
| | - Tianyou Xu
- Department of Cardiology, Renmin Hospital of Wuhan University Hubei Key Laboratory of Autonomic Nervous System Modulation Cardiac Autonomic Nervous System Research Center of Wuhan University Taikang Center for Life and Medical Sciences, Wuhan University Institute of Molecular Medicine, Renmin Hospital of Wuhan University Cardiovascular Research Institute, Wuhan University Hubei Key Laboratory of Cardiology, Wuhan 430060, P.R. China
| | - Changyi Wang
- Department of Cardiology, Renmin Hospital of Wuhan University Hubei Key Laboratory of Autonomic Nervous System Modulation Cardiac Autonomic Nervous System Research Center of Wuhan University Taikang Center for Life and Medical Sciences, Wuhan University Institute of Molecular Medicine, Renmin Hospital of Wuhan University Cardiovascular Research Institute, Wuhan University Hubei Key Laboratory of Cardiology, Wuhan 430060, P.R. China
| | - Yueyi Wang
- Department of Cardiology, Renmin Hospital of Wuhan University Hubei Key Laboratory of Autonomic Nervous System Modulation Cardiac Autonomic Nervous System Research Center of Wuhan University Taikang Center for Life and Medical Sciences, Wuhan University Institute of Molecular Medicine, Renmin Hospital of Wuhan University Cardiovascular Research Institute, Wuhan University Hubei Key Laboratory of Cardiology, Wuhan 430060, P.R. China.
| | - Xiaoya Zhou
- Department of Cardiology, Renmin Hospital of Wuhan University Hubei Key Laboratory of Autonomic Nervous System Modulation Cardiac Autonomic Nervous System Research Center of Wuhan University Taikang Center for Life and Medical Sciences, Wuhan University Institute of Molecular Medicine, Renmin Hospital of Wuhan University Cardiovascular Research Institute, Wuhan University Hubei Key Laboratory of Cardiology, Wuhan 430060, P.R. China.
| | - Hong Jiang
- Department of Cardiology, Renmin Hospital of Wuhan University Hubei Key Laboratory of Autonomic Nervous System Modulation Cardiac Autonomic Nervous System Research Center of Wuhan University Taikang Center for Life and Medical Sciences, Wuhan University Institute of Molecular Medicine, Renmin Hospital of Wuhan University Cardiovascular Research Institute, Wuhan University Hubei Key Laboratory of Cardiology, Wuhan 430060, P.R. China.
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Gudgeon J, Marín-Rubio JL, Trost M. The role of macrophage scavenger receptor 1 (MSR1) in inflammatory disorders and cancer. Front Immunol 2022; 13:1012002. [PMID: 36325338 PMCID: PMC9618966 DOI: 10.3389/fimmu.2022.1012002] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Accepted: 09/28/2022] [Indexed: 08/27/2023] Open
Abstract
Macrophage scavenger receptor 1 (MSR1), also named CD204, holds key inflammatory roles in multiple pathophysiologic processes. Present primarily on the surface of various types of macrophage, this receptor variably affects processes such as atherosclerosis, innate and adaptive immunity, lung and liver disease, and more recently, cancer. As highlighted throughout this review, the role of MSR1 is often dichotomous, being either host protective or detrimental to the pathogenesis of disease. We will discuss the role of MSR1 in health and disease with a focus on the molecular mechanisms influencing MSR1 expression, how altered expression affects disease process and macrophage function, the limited cell signalling pathways discovered thus far, the emerging role of MSR1 in tumour associated macrophages as well as the therapeutic potential of targeting MSR1.
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Affiliation(s)
| | - José Luis Marín-Rubio
- Laboratory for Biological Mass Spectrometry, Biosciences Institute, Newcastle University, Newcastle-upon-Tyne, United Kingdom
| | - Matthias Trost
- Laboratory for Biological Mass Spectrometry, Biosciences Institute, Newcastle University, Newcastle-upon-Tyne, United Kingdom
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Feng X, Zhang Y, Du M, Li S, Ding J, Wang J, Wang Y, Liu P. Identification of diagnostic biomarkers and therapeutic targets in peripheral immune landscape from coronary artery disease. J Transl Med 2022; 20:399. [PMID: 36064568 PMCID: PMC9444127 DOI: 10.1186/s12967-022-03614-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Accepted: 08/24/2022] [Indexed: 11/10/2022] Open
Abstract
Background Peripheral biomarkers are increasingly vital non-invasive methods for monitoring coronary artery disease (CAD) progression. Their superiority in early detection, prognosis evaluation and classified diagnosis is becoming irreplaceable. Nevertheless, they are still less explored. This study aimed to determine and validate the diagnostic and therapeutic values of differentially expressed immune-related genes (DE-IRGs) in CAD. Methods We downloaded clinical information and RNA sequence data from the GEO database. We used R software, GO, KEGG and Cytoscape to analyze and visualize the data. A LASSO method was conducted to identify key genes for diagnostic model construction. The ssGSEA analysis was used to investigate the differential immune cell infiltration. Besides, we constructed CAD mouse model (low-density lipoprotein receptor deficient mice with high fat diet) to discover the correlation between the screened genes and severe CAD progress. We further uncovered the role of IL13RA1 might play in atherosclerosis. Results A total of 762 differential genes were identified between the peripheral blood of 218 controls and 199 CAD patients, which were significantly associated with infection, immune response and neural activity. 58 DE-IRGs were obtained by overlapping the differentially expressed genes(DEGs) and immune-related genes downloaded from ImmpDb database. Through LASSO regression, CCR9, CER1, CSF2, IL13RA1, INSL5, MBL2, MMP9, MSR1, NTS, TNFRSF19, CXCL2, HTR3C, IL1A, and NR4A2 were distinguished as peripheral biomarkers of CAD with eligible diagnostic capabilities in the training set (AUC = 0.968) and test set (AUC = 0.859). The ssGSEA analysis showed that the peripheral immune cells had characteristic distribution in CAD and also close relationship with specific DE-IRGs. RT-qPCR test showed that CCR9, CSF2, IL13RA1, and NTS had a significant correlation with LDLR−/− mice. IL13RA1 knocked down in RAW264.7 cell lines decreased SCARB1 and ox-LDL-stimulated CD36 mRNA expression, TGF-β, VEGF-C and α-SMA protein levels and increased the production of IL-6, with downregulation of JAK1/STAT3 signal pathway. Conclusions We constructed a diagnostic model of advanced-stage CAD based on the screened 14 DE-IRGs. We verified 4 genes of them to have a strong correlation with CAD, and IL13RA1 might participate in the inflammation, fibrosis, and cholesterol efflux process of atherosclerosis by regulating JAK1/STAT3 pathway. Supplementary Information The online version contains supplementary material available at 10.1186/s12967-022-03614-1.
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Affiliation(s)
- Xiaoteng Feng
- Department of Cardiology, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yifan Zhang
- Department of Cardiology, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Min Du
- Department of Cardiology, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Sijin Li
- Department of Cardiology, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Jie Ding
- Department of Cardiology, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Jiarou Wang
- Department of Cardiology, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yiru Wang
- Department of Cardiology, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Ping Liu
- Department of Cardiology, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China.
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Baos S, Cremades-Jimeno L, López-Ramos M, de Pedro MÁ, Uriarte SA, Sastre J, González-Mangado N, Rodríguez-Nieto MJ, Peces-Barba G, Cárdaba B. Expression of Macrophage Scavenger Receptor (MSR1) in Peripheral Blood Cells from Patients with Different Respiratory Diseases: Beyond Monocytes. J Clin Med 2022; 11:jcm11051439. [PMID: 35268530 PMCID: PMC8910889 DOI: 10.3390/jcm11051439] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Revised: 02/28/2022] [Accepted: 03/03/2022] [Indexed: 12/10/2022] Open
Abstract
Background: Macrophage scavenger receptor 1 (MSR1) has mostly been described in macrophages, but we previously found a significant gene expression increase in peripheral blood mononuclear cells (PBMCs) of asthmatic patients. Objective: To confirm those results and to define its cellular origin in PBMCs. Methods: Four groups of subjects were studied: healthy controls (C), nonallergic asthmatic (NA), allergic asthmatic (AA), and chronic obstructive pulmonary disease (COPD) patients. RNA was extracted from PBMCs. MSR1 gene expression was analyzed by RT-qPCR. The presence of MSR1 on the cellular surface of PBMC cellular subtypes was analyzed by confocal microscopy and flow cytometry. Results: MSR1 gene expression was significantly increased in the three clinical conditions compared to the healthy control group, with substantial variations according to disease type and severity. MSR1 expression on T cells (CD4+ and CD8+), B cells, and monocytes was confirmed by confocal microscopy and flow cytometry. In all clinical groups, the four immune cell subtypes studied expressed MSR1, with a greater expression on B lymphocytes and monocytes, exhibiting differences according to disease and severity. Conclusions: This is the first description of MSR1’s presence on lymphocytes’ surfaces and reinforces the potential role of MSR1 as a player in asthma and COPD.
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Affiliation(s)
- Selene Baos
- Immunology Department, IIS-Fundación Jiménez Díaz-UAM, 28040 Madrid, Spain; (S.B.); (L.C.-J.); (M.L.-R.); (M.Á.d.P.)
| | - Lucía Cremades-Jimeno
- Immunology Department, IIS-Fundación Jiménez Díaz-UAM, 28040 Madrid, Spain; (S.B.); (L.C.-J.); (M.L.-R.); (M.Á.d.P.)
| | - María López-Ramos
- Immunology Department, IIS-Fundación Jiménez Díaz-UAM, 28040 Madrid, Spain; (S.B.); (L.C.-J.); (M.L.-R.); (M.Á.d.P.)
| | - María Ángeles de Pedro
- Immunology Department, IIS-Fundación Jiménez Díaz-UAM, 28040 Madrid, Spain; (S.B.); (L.C.-J.); (M.L.-R.); (M.Á.d.P.)
| | - Silvia A. Uriarte
- Allergy Department, University Hospital Fundación Jiménez Díaz, 28040 Madrid, Spain; (S.A.U.); (J.S.)
| | - Joaquín Sastre
- Allergy Department, University Hospital Fundación Jiménez Díaz, 28040 Madrid, Spain; (S.A.U.); (J.S.)
- Ciber de Enfermedades Respiratorias (CIBERES), 28029 Madrid, Spain; (N.G.-M.); (M.J.R.-N.); (G.P.-B.)
| | - Nicolás González-Mangado
- Ciber de Enfermedades Respiratorias (CIBERES), 28029 Madrid, Spain; (N.G.-M.); (M.J.R.-N.); (G.P.-B.)
- Pulmonology Department, University Hospital Fundación Jiménez Díaz, 28040 Madrid, Spain
| | - María Jesús Rodríguez-Nieto
- Ciber de Enfermedades Respiratorias (CIBERES), 28029 Madrid, Spain; (N.G.-M.); (M.J.R.-N.); (G.P.-B.)
- Pulmonology Department, University Hospital Fundación Jiménez Díaz, 28040 Madrid, Spain
| | - Germán Peces-Barba
- Ciber de Enfermedades Respiratorias (CIBERES), 28029 Madrid, Spain; (N.G.-M.); (M.J.R.-N.); (G.P.-B.)
- Pulmonology Department, University Hospital Fundación Jiménez Díaz, 28040 Madrid, Spain
| | - Blanca Cárdaba
- Immunology Department, IIS-Fundación Jiménez Díaz-UAM, 28040 Madrid, Spain; (S.B.); (L.C.-J.); (M.L.-R.); (M.Á.d.P.)
- Ciber de Enfermedades Respiratorias (CIBERES), 28029 Madrid, Spain; (N.G.-M.); (M.J.R.-N.); (G.P.-B.)
- Correspondence:
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Linares-Alcántara E, Mendlovic F. Scavenger Receptor A1 Signaling Pathways Affecting Macrophage Functions in Innate and Adaptive Immunity. Immunol Invest 2022; 51:1725-1755. [PMID: 34986758 DOI: 10.1080/08820139.2021.2020812] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
First discovered on macrophages by Goldstein and Brown in 1979, Scavenger Receptors have since been shown to participate in a diverse number of cell functions; equally diverse are their structures and the ligands they bind. Macrophage activation is crucial in the outcome of an immune response. SR-A1 is highly abundant on macrophages and recognizes both host- and microorganism-derived molecules that impact processes that are initiated, perpetuated, or modified. This review summarizes the involvement of SR-A1 in both inflammatory and anti-inflammatory responses, the multiple-ligand internalization mechanisms and the diversity of signaling pathways that impact macrophage function and activation. Engagement of SR-A1 results in the stimulation of differential signaling pathways and patterns of cytokine expression, kinetics, magnitude of response and activation status. SR-A1 plays essential roles in phagocytosis and efferocytosis, interacting with other receptors and promoting tolerance in response to apoptotic cell uptake. In cell adhesion, tissue remodeling, and cell migration, SR-A1 signals through different pathways engaging different cytoplasmic motifs. We describe the role of SR-A1 during innate and adaptive immune responses, such as participation in macrophage polarization and interaction with other innate receptors, as well as in antigen uptake, processing, and presentation, regulating T and B cell activation. The dichotomous contribution of SR-A1 on macrophage functions is discussed. A better understanding of the role SR-A1 plays through molecular mechanisms and crosstalk with other receptors may provide insights into developing novel therapeutic strategies to modulate immune responses and immunopathologies.
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Affiliation(s)
- Elizabeth Linares-Alcántara
- Facultad de Ciencias, UNAM, Av. Universidad 3000, Col. Copilco-Universidad, Ciudad de Mexico, Mexico.,Departamento de Microbiología y Parasitología, Facultad de Medicina, UNAM, Av. Universidad 3000, Col. Copilco-Universidad, Ciudad de Mexico, Mexico
| | - Fela Mendlovic
- Departamento de Microbiología y Parasitología, Facultad de Medicina, UNAM, Av. Universidad 3000, Col. Copilco-Universidad, Ciudad de Mexico, Mexico.,Facultad de Ciencias de la Salud, Universidad Anahuac Mexico Norte, Huixquilucan, Mexico
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Daiber A, Steven S, Euler G, Schulz R. Vascular and Cardiac Oxidative Stress and Inflammation as Targets for Cardioprotection. Curr Pharm Des 2021; 27:2112-2130. [PMID: 33550963 DOI: 10.2174/1381612827666210125155821] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Accepted: 11/11/2020] [Indexed: 11/22/2022]
Abstract
Cardiac and vascular diseases are often associated with increased oxidative stress and inflammation, and both may contribute to the disease progression. However, successful applications of antioxidants in the clinical setting are very rare and specific anti-inflammatory therapeutics only emerged recently. Reasons for this rely on the great diversity of oxidative stress and inflammatory cells that can either act as cardioprotective or cause tissue damage in the heart. Recent large-scale clinical trials found that highly specific anti-inflammatory therapies using monoclonal antibodies against cytokines resulted in lower cardiovascular mortality in patients with pre-existing atherosclerotic disease. In addition, unspecific antiinflammatory medication and established cardiovascular drugs with pleiotropic immunomodulatory properties such as angiotensin converting enzyme (ACE) inhibitors or statins have proven beneficial cardiovascular effects. Normalization of oxidative stress seems to be a common feature of these therapies, which can be explained by a close interaction/crosstalk of the cellular redox state and inflammatory processes. In this review, we give an overview of cardiac reactive oxygen species (ROS) sources and processes of cardiac inflammation as well as the connection of ROS and inflammation in ischemic cardiomyopathy in order to shed light on possible cardioprotective interventions.
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Affiliation(s)
- Andreas Daiber
- Department of Cardiology, Molecular Cardiology, University Medical Center Mainz, Mainz, Germany
| | - Sebastian Steven
- Department of Cardiology, Molecular Cardiology, University Medical Center Mainz, Mainz, Germany
| | - Gerhild Euler
- Institute of Physiology, Justus-Liebig University, Giessen, Germany
| | - Rainer Schulz
- Institute of Physiology, Justus-Liebig University, Giessen, Germany
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Abstract
ABSTRACT As an integral component of cardiac tissue, macrophages are critical for cardiac development, adult heart homeostasis, as well as cardiac healing. One fundamental function of macrophages involves the clearance of dying cells or debris, a process termed efferocytosis. Current literature primarily pays attention to the impact of efferocytosis on apoptotic cells. However, emerging evidence suggests that necrotic cells and their released cellular debris can also be removed by cardiac macrophages through efferocytosis. Importantly, recent studies have demonstrated that macrophage efferocytosis plays an essential role in cardiac pathophysiology and repair. Therefore, understanding macrophage efferocytosis would provide valuable insights on cardiac health, and may offer new therapeutic strategies for the treatment of patients with heart failure. In this review, we first summarize the molecular signals that are associated with macrophage efferocytosis of apoptotic and necrotic cells, and then discuss how the linkage of efferocytosis to the resolution of inflammation affects cardiac function and recovery under normal and diseased conditions. Lastly, we highlight new discoveries related to the effects of macrophage efferocytosis on cardiac injury and repair.
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Affiliation(s)
- Li Yutian
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Li Qianqian
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, Ohio
- Division of Pharmaceutical Science, James L. Winkle College of Pharmacy, University of Cincinnati, Cincinnati, Ohio
| | - Guo-Chang Fan
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, Ohio
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Hanna A, Shinde AV, Frangogiannis NG. Validation of diagnostic criteria and histopathological characterization of cardiac rupture in the mouse model of nonreperfused myocardial infarction. Am J Physiol Heart Circ Physiol 2020; 319:H948-H964. [PMID: 32886000 DOI: 10.1152/ajpheart.00318.2020] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
In patients with myocardial infarction (MI), cardiac rupture is an uncommon but catastrophic complication. In the mouse model of nonreperfused MI, reported rupture rates are highly variable and depend not only on the genetic background and sex of animals but also on the method used for documentation of rupture. In most studies, diagnosis of cardiac rupture is based on visual inspection during autopsy; however, criteria are poorly defined. We performed systematic histopathological analysis of whole hearts from C57BL/6J mice dying after nonreperfused MI and evaluated the reliability of autopsy-based criteria in identification of rupture. Moreover, we compared the cell biological environment of the infarct between rupture-related and rupture-independent deaths. Histopathological analysis documented rupture in 50% of mice dying during the first week post-MI. Identification of a gross rupture site was highly specific but had low sensitivity; in contrast, hemothorax had high sensitivity but low specificity. Mice with rupture had lower myofibroblast infiltration, accentuated macrophage influx, and a trend toward reduced collagen content in the infarct. Male mice had increased mortality and higher incidence of rupture. However, infarct myeloid cells harvested from male and female mice at the peak of the incidence of rupture had comparable inflammatory gene expression. In conclusion, the reliability of autopsy in documentation of rupture in infarcted mice is dependent on the specific criteria used. Macrophage-driven inflammation and reduced activation of collagen-secreting reparative myofibroblasts may be involved in the pathogenesis of post-MI cardiac rupture.NEW & NOTEWORTHY We show that cardiac rupture accounts for 50% of deaths in C57BL/6J mice undergoing nonreperfused myocardial infarction protocols. Overestimation of rupture events in published studies likely reflects the low specificity of hemothorax as a criterion for documentation of rupture. In contrast, identification of a gross rupture site has high specificity and low sensitivity. We also show that mice dying of rupture have increased macrophage influx and attenuated myofibroblast infiltration in the infarct. These findings are consistent with a role for perturbations in the balance between inflammatory and reparative responses in the pathogenesis of postinfarction cardiac rupture. We also report that the male predilection for rupture in infarcted mice is not associated with increased inflammatory activation of myeloid cells.
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Affiliation(s)
- Anis Hanna
- Division of Cardiology, Department of Medicine, The Wilf Family Cardiovascular Research Institute, Albert Einstein College of Medicine, Bronx, New York
| | - Arti V Shinde
- Division of Cardiology, Department of Medicine, The Wilf Family Cardiovascular Research Institute, Albert Einstein College of Medicine, Bronx, New York
| | - Nikolaos G Frangogiannis
- Division of Cardiology, Department of Medicine, The Wilf Family Cardiovascular Research Institute, Albert Einstein College of Medicine, Bronx, New York
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11
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Burridge PW, Thorp EB. Doxorubicin-Induced Ascension of Resident Cardiac Macrophages. Circ Res 2020; 127:628-630. [PMID: 32790526 DOI: 10.1161/circresaha.120.317626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Paul W Burridge
- From the Feinberg School of Medicine, Northwestern University, Chicago, IL
| | - Edward B Thorp
- From the Feinberg School of Medicine, Northwestern University, Chicago, IL
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12
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Zhang H, Xu A, Sun X, Yang Y, Zhang L, Bai H, Ben J, Zhu X, Li X, Yang Q, Wang Z, Wu W, Yang D, Zhang Y, Xu Y, Chen Q. Self-Maintenance of Cardiac Resident Reparative Macrophages Attenuates Doxorubicin-Induced Cardiomyopathy Through the SR-A1-c-Myc Axis. Circ Res 2020; 127:610-627. [PMID: 32466726 DOI: 10.1161/circresaha.119.316428] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
RATIONALE Doxorubicin-induced cardiomyopathy (DiCM) is a primary cause of heart failure and mortality in cancer patients, in which macrophage-orchestrated inflammation serves as an essential pathological mechanism. However, the specific roles of tissue-resident and monocyte-derived macrophages in DiCM remain poorly understood. OBJECTIVE Uncovering the origins, phenotypes, and functions of proliferative cardiac resident macrophages and mechanistic insights into the self-maintenance of cardiac macrophage during DiCM progression. METHODS AND RESULTS Mice were administrated with doxorubicin to induce cardiomyopathy. Dynamic changes of resident and monocyte-derived macrophages were examined by lineage tracing, parabiosis, and bone marrow transplantation. We found that the monocyte-derived macrophages primarily exhibited a proinflammatory phenotype that dominated the whole DiCM pathological process and impaired cardiac function. In contrast, cardiac resident macrophages were vulnerable to doxorubicin insult. The survived resident macrophages exhibited enhanced proliferation and conferred a reparative role. Global or myeloid specifically ablation of SR-A1 (class A1 scavenger receptor) inhibited proliferation of cardiac resident reparative macrophages and, therefore, exacerbated cardiomyopathy in DiCM mice. Importantly, the detrimental effect of macrophage SR-A1 deficiency was confirmed by transplantation of bone marrow. At the mechanistic level, we show that c-Myc (Avian myelocytomatosis virus oncogene cellular homolog), a key transcriptional factor for the SR-A1-P38-SIRT1 (Sirtuin 1) pathway, mediated the effect of SR-A1 in reparative macrophage proliferation in DiCM. CONCLUSIONS The SR-A1-c-Myc axis may represent a promising target to treat DiCM through augmentation of cardiac resident reparative macrophage proliferation.
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MESH Headings
- Animals
- CX3C Chemokine Receptor 1/genetics
- CX3C Chemokine Receptor 1/metabolism
- Cardiomyopathy, Dilated/chemically induced
- Cardiomyopathy, Dilated/enzymology
- Cardiomyopathy, Dilated/pathology
- Cardiomyopathy, Dilated/prevention & control
- Cell Proliferation
- Cell Self Renewal
- Cells, Cultured
- Disease Models, Animal
- Doxorubicin
- Female
- Green Fluorescent Proteins/genetics
- Green Fluorescent Proteins/metabolism
- Humans
- Macrophages/enzymology
- Macrophages/pathology
- Male
- Mice, Inbred C57BL
- Mice, Knockout
- Myocardium/enzymology
- Myocardium/pathology
- Phenotype
- Proto-Oncogene Proteins c-myc/genetics
- Proto-Oncogene Proteins c-myc/metabolism
- Scavenger Receptors, Class A/deficiency
- Scavenger Receptors, Class A/genetics
- Scavenger Receptors, Class A/metabolism
- Signal Transduction
- Ventricular Remodeling
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Affiliation(s)
- Hanwen Zhang
- From the Department of Pathophysiology (H.Z., A.X., X.S., Y.Y., L.Z., H.B., J.B., X.Z., X.L., Q.Y., Y.X., Q.C.), Nanjing Medical University, China
- Key Laboratory of Targeted Intervention of Cardiovascular Diseases, Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, Jiangsu Province, China (H.Z., A.X., Y.Y., L.Z., H.B., J.B., X.Z., X.L., Q.Y., Y.X., Q.C.)
| | - Andi Xu
- From the Department of Pathophysiology (H.Z., A.X., X.S., Y.Y., L.Z., H.B., J.B., X.Z., X.L., Q.Y., Y.X., Q.C.), Nanjing Medical University, China
- Key Laboratory of Targeted Intervention of Cardiovascular Diseases, Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, Jiangsu Province, China (H.Z., A.X., Y.Y., L.Z., H.B., J.B., X.Z., X.L., Q.Y., Y.X., Q.C.)
| | - Xuan Sun
- From the Department of Pathophysiology (H.Z., A.X., X.S., Y.Y., L.Z., H.B., J.B., X.Z., X.L., Q.Y., Y.X., Q.C.), Nanjing Medical University, China
- Department of Cardiology, Nanjing Drum Tower Hospital, China (X.S.)
| | - Yaqing Yang
- From the Department of Pathophysiology (H.Z., A.X., X.S., Y.Y., L.Z., H.B., J.B., X.Z., X.L., Q.Y., Y.X., Q.C.), Nanjing Medical University, China
- Key Laboratory of Targeted Intervention of Cardiovascular Diseases, Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, Jiangsu Province, China (H.Z., A.X., Y.Y., L.Z., H.B., J.B., X.Z., X.L., Q.Y., Y.X., Q.C.)
| | - Lai Zhang
- From the Department of Pathophysiology (H.Z., A.X., X.S., Y.Y., L.Z., H.B., J.B., X.Z., X.L., Q.Y., Y.X., Q.C.), Nanjing Medical University, China
- Key Laboratory of Targeted Intervention of Cardiovascular Diseases, Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, Jiangsu Province, China (H.Z., A.X., Y.Y., L.Z., H.B., J.B., X.Z., X.L., Q.Y., Y.X., Q.C.)
| | - Hui Bai
- From the Department of Pathophysiology (H.Z., A.X., X.S., Y.Y., L.Z., H.B., J.B., X.Z., X.L., Q.Y., Y.X., Q.C.), Nanjing Medical University, China
- Key Laboratory of Targeted Intervention of Cardiovascular Diseases, Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, Jiangsu Province, China (H.Z., A.X., Y.Y., L.Z., H.B., J.B., X.Z., X.L., Q.Y., Y.X., Q.C.)
| | - Jingjing Ben
- From the Department of Pathophysiology (H.Z., A.X., X.S., Y.Y., L.Z., H.B., J.B., X.Z., X.L., Q.Y., Y.X., Q.C.), Nanjing Medical University, China
- Key Laboratory of Targeted Intervention of Cardiovascular Diseases, Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, Jiangsu Province, China (H.Z., A.X., Y.Y., L.Z., H.B., J.B., X.Z., X.L., Q.Y., Y.X., Q.C.)
| | - Xudong Zhu
- From the Department of Pathophysiology (H.Z., A.X., X.S., Y.Y., L.Z., H.B., J.B., X.Z., X.L., Q.Y., Y.X., Q.C.), Nanjing Medical University, China
- Key Laboratory of Targeted Intervention of Cardiovascular Diseases, Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, Jiangsu Province, China (H.Z., A.X., Y.Y., L.Z., H.B., J.B., X.Z., X.L., Q.Y., Y.X., Q.C.)
| | - Xiaoyu Li
- From the Department of Pathophysiology (H.Z., A.X., X.S., Y.Y., L.Z., H.B., J.B., X.Z., X.L., Q.Y., Y.X., Q.C.), Nanjing Medical University, China
- Key Laboratory of Targeted Intervention of Cardiovascular Diseases, Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, Jiangsu Province, China (H.Z., A.X., Y.Y., L.Z., H.B., J.B., X.Z., X.L., Q.Y., Y.X., Q.C.)
| | - Qing Yang
- From the Department of Pathophysiology (H.Z., A.X., X.S., Y.Y., L.Z., H.B., J.B., X.Z., X.L., Q.Y., Y.X., Q.C.), Nanjing Medical University, China
- Key Laboratory of Targeted Intervention of Cardiovascular Diseases, Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, Jiangsu Province, China (H.Z., A.X., Y.Y., L.Z., H.B., J.B., X.Z., X.L., Q.Y., Y.X., Q.C.)
| | - Zidun Wang
- Department of Cardiology, First Affiliated Hospital with Nanjing Medical University, China (Z.W., D.Y.)
| | - Wei Wu
- Bioinformatics (W.W.), Nanjing Medical University, China
| | - Di Yang
- Department of Cardiology, First Affiliated Hospital with Nanjing Medical University, China (Z.W., D.Y.)
| | | | - Yong Xu
- From the Department of Pathophysiology (H.Z., A.X., X.S., Y.Y., L.Z., H.B., J.B., X.Z., X.L., Q.Y., Y.X., Q.C.), Nanjing Medical University, China
- Key Laboratory of Targeted Intervention of Cardiovascular Diseases, Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, Jiangsu Province, China (H.Z., A.X., Y.Y., L.Z., H.B., J.B., X.Z., X.L., Q.Y., Y.X., Q.C.)
| | - Qi Chen
- From the Department of Pathophysiology (H.Z., A.X., X.S., Y.Y., L.Z., H.B., J.B., X.Z., X.L., Q.Y., Y.X., Q.C.), Nanjing Medical University, China
- Key Laboratory of Targeted Intervention of Cardiovascular Diseases, Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, Jiangsu Province, China (H.Z., A.X., Y.Y., L.Z., H.B., J.B., X.Z., X.L., Q.Y., Y.X., Q.C.)
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13
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Nakanishi N, Kaikita K, Ishii M, Oimatsu Y, Mitsuse T, Ito M, Yamanaga K, Fujisue K, Kanazawa H, Sueta D, Takashio S, Arima Y, Araki S, Nakamura T, Sakamoto K, Suzuki S, Yamamoto E, Soejima H, Tsujita K. Cardioprotective Effects of Rivaroxaban on Cardiac Remodeling After Experimental Myocardial Infarction in Mice. Circ Rep 2020; 2:158-166. [PMID: 33693223 PMCID: PMC7921351 DOI: 10.1253/circrep.cr-19-0117] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Background:
Direct-activated factor X (FXa) plays an important role in thrombosis and is also involved in inflammation via the protease-activated receptor (PAR)-1 and PAR-2 pathway. We hypothesized that rivaroxaban protects against cardiac remodeling after myocardial infarction (MI). Methods and Results:
MI was induced in wild-type mice by permanent ligation of the left anterior descending coronary artery. At day 1 after MI, mice were randomly assigned to the rivaroxaban and vehicle groups. Mice in the rivaroxaban group were provided with a regular chow diet plus rivaroxaban. We evaluated cardiac function by echocardiography, pathology, expression of mRNA and protein at day 7 after MI. Rivaroxaban significantly improved cardiac systolic function, decreased infarct size and cardiac mass compared with the vehicle. Rivaroxaban also downregulated the mRNA expression levels of tumor necrosis factor-α, transforming growth factor-β, PAR-1 and PAR-2 in the infarcted area, and both A-type and B-type natriuretic peptides in the non-infarcted area compared with the vehicle. Furthermore, rivaroxaban attenuated cardiomyocyte hypertrophy and the phosphorylation of extracellular signal-regulated kinase in the non-infarcted area compared with the vehicle. Conclusions:
Rivaroxaban protected against cardiac dysfunction in MI model mice. Reduction of PAR-1, PAR-2 and proinflammatory cytokines in the infarcted area may be involved in its cardioprotective effects.
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Affiliation(s)
- Nobuhiro Nakanishi
- Department of Cardiovascular Medicine and Center for Metabolic Regulation of Healthy Aging, Graduate School of Medical Sciences, Kumamoto University Kumamoto Japan
| | - Koichi Kaikita
- Department of Cardiovascular Medicine and Center for Metabolic Regulation of Healthy Aging, Graduate School of Medical Sciences, Kumamoto University Kumamoto Japan
| | - Masanobu Ishii
- Department of Cardiovascular Medicine and Center for Metabolic Regulation of Healthy Aging, Graduate School of Medical Sciences, Kumamoto University Kumamoto Japan
| | - Yu Oimatsu
- Department of Cardiovascular Medicine and Center for Metabolic Regulation of Healthy Aging, Graduate School of Medical Sciences, Kumamoto University Kumamoto Japan
| | - Tatsuro Mitsuse
- Department of Cardiovascular Medicine and Center for Metabolic Regulation of Healthy Aging, Graduate School of Medical Sciences, Kumamoto University Kumamoto Japan
| | - Miwa Ito
- Department of Cardiovascular Medicine and Center for Metabolic Regulation of Healthy Aging, Graduate School of Medical Sciences, Kumamoto University Kumamoto Japan
| | - Kenshi Yamanaga
- Department of Cardiovascular Medicine and Center for Metabolic Regulation of Healthy Aging, Graduate School of Medical Sciences, Kumamoto University Kumamoto Japan
| | - Koichiro Fujisue
- Department of Cardiovascular Medicine and Center for Metabolic Regulation of Healthy Aging, Graduate School of Medical Sciences, Kumamoto University Kumamoto Japan
| | - Hisanori Kanazawa
- Department of Cardiovascular Medicine and Center for Metabolic Regulation of Healthy Aging, Graduate School of Medical Sciences, Kumamoto University Kumamoto Japan
| | - Daisuke Sueta
- Department of Cardiovascular Medicine and Center for Metabolic Regulation of Healthy Aging, Graduate School of Medical Sciences, Kumamoto University Kumamoto Japan
| | - Seiji Takashio
- Department of Cardiovascular Medicine and Center for Metabolic Regulation of Healthy Aging, Graduate School of Medical Sciences, Kumamoto University Kumamoto Japan
| | - Yuichiro Arima
- Department of Cardiovascular Medicine and Center for Metabolic Regulation of Healthy Aging, Graduate School of Medical Sciences, Kumamoto University Kumamoto Japan
| | - Satoshi Araki
- Department of Cardiovascular Medicine and Center for Metabolic Regulation of Healthy Aging, Graduate School of Medical Sciences, Kumamoto University Kumamoto Japan
| | - Taishi Nakamura
- Department of Cardiovascular Medicine and Center for Metabolic Regulation of Healthy Aging, Graduate School of Medical Sciences, Kumamoto University Kumamoto Japan
| | - Kenji Sakamoto
- Department of Cardiovascular Medicine and Center for Metabolic Regulation of Healthy Aging, Graduate School of Medical Sciences, Kumamoto University Kumamoto Japan
| | - Satoru Suzuki
- Department of Cardiovascular Medicine and Center for Metabolic Regulation of Healthy Aging, Graduate School of Medical Sciences, Kumamoto University Kumamoto Japan
| | - Eiichiro Yamamoto
- Department of Cardiovascular Medicine and Center for Metabolic Regulation of Healthy Aging, Graduate School of Medical Sciences, Kumamoto University Kumamoto Japan
| | - Hirofumi Soejima
- Department of Cardiovascular Medicine and Center for Metabolic Regulation of Healthy Aging, Graduate School of Medical Sciences, Kumamoto University Kumamoto Japan
| | - Kenichi Tsujita
- Department of Cardiovascular Medicine and Center for Metabolic Regulation of Healthy Aging, Graduate School of Medical Sciences, Kumamoto University Kumamoto Japan
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14
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Zhu X, Wang Y, Zhu L, Zhu Y, Zhang K, Wang L, Bai H, Yang Q, Ben J, Zhang H, Li X, Xu Y, Chen Q. Class A1 scavenger receptor prevents obesity-associated blood pressure elevation through suppressing overproduction of vascular endothelial growth factor B in macrophages. Cardiovasc Res 2020; 117:547-560. [PMID: 32044963 DOI: 10.1093/cvr/cvaa030] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/11/2019] [Revised: 11/17/2019] [Accepted: 01/31/2020] [Indexed: 12/14/2022] Open
Abstract
AIMS Dysfunctional innate immune function and inflammation contributes to the pathogenesis of obesity-associated hypertension, in which macrophage infiltration in the perivascular adipose tissue (PVAT) plays a key role. However, the mechanisms behind it are not well understood. Class A1 scavenger receptor (SR-A1) is one of the major pattern recognition receptors in modulating macrophage activity, and here, we aimed to investigate its role in obesity-associated hypertension. METHODS AND RESULTS Both diet-induced and genetic obesity were generated in mice. Deficiency in SR-A1 aggravated the obesity-induced blood pressure (BP) elevation and endothelial dysfunction in mice. The BP-elevating effect of SR-A1 deficiency was blocked by the down-regulation of vascular endothelial growth factor B (VEGF-B) in obese mice. Overexpression of VEGF-B raised BP in the obese mice but not in normal mice. Administration of fucoidan, a ligand of SR-A1, lowered BP, and VEGF-B levels in Sr-a1+/+ but not in Sr-a1-/- obese mice. CONCLUSION These results reveal a new link between PVAT and vascular biology in obesity orchestrated by the SR-A1/VEGF-B axis in macrophages. SR-A1 and VEGF-B may be promising therapeutic targets in the treatment of obesity-associated hypertension.
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Affiliation(s)
- Xudong Zhu
- Atherosclerosis Research Center, Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, Liongmian Road, Jiangning District, Nanjing 211166, China
| | - Yan Wang
- Atherosclerosis Research Center, Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, Liongmian Road, Jiangning District, Nanjing 211166, China
| | - Liu Zhu
- Atherosclerosis Research Center, Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, Liongmian Road, Jiangning District, Nanjing 211166, China.,Cardiovascular Medicine Department, The Second Affiliated Hospital of Soochow University, Sanxiang Road, Gusu District, Suzhou 215004, China
| | - Ye Zhu
- Atherosclerosis Research Center, Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, Liongmian Road, Jiangning District, Nanjing 211166, China
| | - Kun Zhang
- Atherosclerosis Research Center, Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, Liongmian Road, Jiangning District, Nanjing 211166, China
| | - Lei Wang
- Atherosclerosis Research Center, Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, Liongmian Road, Jiangning District, Nanjing 211166, China
| | - Hui Bai
- Atherosclerosis Research Center, Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, Liongmian Road, Jiangning District, Nanjing 211166, China
| | - Qing Yang
- Atherosclerosis Research Center, Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, Liongmian Road, Jiangning District, Nanjing 211166, China
| | - Jingjing Ben
- Atherosclerosis Research Center, Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, Liongmian Road, Jiangning District, Nanjing 211166, China
| | - Hanwen Zhang
- Atherosclerosis Research Center, Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, Liongmian Road, Jiangning District, Nanjing 211166, China
| | - Xiaoyu Li
- Atherosclerosis Research Center, Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, Liongmian Road, Jiangning District, Nanjing 211166, China
| | - Yong Xu
- Atherosclerosis Research Center, Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, Liongmian Road, Jiangning District, Nanjing 211166, China
| | - Qi Chen
- Atherosclerosis Research Center, Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, Liongmian Road, Jiangning District, Nanjing 211166, China
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15
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Lin YS, Chang TH, Shi CS, Wang YZ, Ho WC, Huang HD, Chang ST, Pan KL, Chen MC. Liver X Receptor/Retinoid X Receptor Pathway Plays a Regulatory Role in Pacing-Induced Cardiomyopathy. J Am Heart Assoc 2020; 8:e009146. [PMID: 30612502 PMCID: PMC6405706 DOI: 10.1161/jaha.118.009146] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Background The molecular mechanisms through which high‐demand pacing induce myocardial dysfunction remain unclear. Methods and Results We created atrioventricular block in pigs using dependent right ventricular septal pacing for 6 months. Echocardiography was performed to evaluate dyssynchrony between pacing (n=6) and sham control (n=6) groups. Microarray and enrichment analyses were used to identify differentially expressed genes (DEGs) in the left ventricular (LV) myocardium between pacing and sham control groups. Histopathological and protein changes were also analyzed and an A cell pacing model was also performed. Pacing significantly increased mechanical dyssynchrony. Enrichment analysis using Ingenuity Pathway Analysis and the activation z‐score analysis method demonstrated that there were 5 DEGs (ABCA1, APOD, CLU, LY96, and SERPINF1) in the LV septum (z‐score=−0.447) and 5 DEGs (APOD, CLU, LY96, MSR1, and SERPINF1) in the LV free wall (z‐score=−1.000) inhibited the liver X receptor/retinoid X receptor (LXR/RXR) pathway, and 4 DEGs (ACTA2, MYL1, PPP2R3A, and SNAI2) activated the integrin‐linked kinase (ILK) pathway in the LV septum (z‐score=1.000). The pacing group had a larger cell size, higher degree of myolysis and fibrosis, and increased expression of intracellular lipid, inflammatory cytokines, and apoptotic markers than the sham control group. The causal relationships between pacing and DEGs related to LXR/RXR and ILK pathways, apoptosis, fibrosis, and lipid expression after pacing were confirmed in the cell pacing model. Luciferase reporter assay in the cell pacing model also supported inhibition of the LXR pathway by pacing. Conclusions Right ventricular septal‐dependent pacing was associated with persistent LV dyssynchrony–induced cardiomyopathy through inhibition of the LXR/RXR pathway.
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Affiliation(s)
- Yu-Sheng Lin
- 1 Division of Cardiology Chang Gung Memorial Hospital Chiayi Taiwan.,2 Graduate Institute of Clinical Medical Sciences College of Medicine Chang Gung University Taoyuan Taiwan
| | - Tzu-Hao Chang
- 3 Graduate Institute of Biomedical Informatics Taipei Medical University Taipei Taiwan
| | - Chung-Sheng Shi
- 2 Graduate Institute of Clinical Medical Sciences College of Medicine Chang Gung University Taoyuan Taiwan
| | - Yi-Zhen Wang
- 4 Division of Cardiology Department of Internal Medicine Kaohsiung Chang Gung Memorial Hospital Chang Gung University College of Medicine Kaohsiung Taiwan
| | - Wan-Chun Ho
- 4 Division of Cardiology Department of Internal Medicine Kaohsiung Chang Gung Memorial Hospital Chang Gung University College of Medicine Kaohsiung Taiwan
| | - Hsien-Da Huang
- 5 The Warshel Institute of Computational Biology School of Science and Technology The Chinese University of Hong Kong Shenzhen China.,6 Department of Biological Science and Technology National Chiao Tung University Hsinchu Taiwan
| | - Shih-Tai Chang
- 1 Division of Cardiology Chang Gung Memorial Hospital Chiayi Taiwan
| | - Kuo-Li Pan
- 1 Division of Cardiology Chang Gung Memorial Hospital Chiayi Taiwan
| | - Mien-Cheng Chen
- 4 Division of Cardiology Department of Internal Medicine Kaohsiung Chang Gung Memorial Hospital Chang Gung University College of Medicine Kaohsiung Taiwan
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16
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He W, Zhu L, Huang Y, Zhang Y, Shen W, Fang L, Li J, Wang Z, Xie Q. The relationship of MicroRNA-21 and plaque stability in acute coronary syndrome. Medicine (Baltimore) 2019; 98:e18049. [PMID: 31764830 PMCID: PMC6882643 DOI: 10.1097/md.0000000000018049] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Acute coronary syndrome (ACS) leads to clinical symptoms such as chest pain, dyspnea, and arrhythmia. The occurrence of ACS is mainly related to the vulnerable plaques in the coronary arteries. MicroRNA-21 (miR-21) is widely expressed in cardiovascular disease and considered as a marker of myocardial infarction, but its role in vulnerable atherosclerotic plaque of ACS is poorly studied. The cases of ACS and control group were selected in 2 years. Our results revealed that miR-21 was highly positively correlated with the maximum lipid core area, the number of diseased vessels, the number of macrophages, the number of vulnerable plaques, and negatively correlated with the thickness of fiber caps. In the high expression group, the number of coronary artery lesions, the number of vulnerable plaques, the core area of lipid pools and the number of macrophages were significantly higher than those in the low expression group and the middle expression group. But the high expression group of the thickness of the fiber cap was significantly lower than that of the low expression group and the medium expression group. These studies show that miR-21 is an important factor leading to vulnerable plaque instability in ACS, and it can be a predictor of acute adverse events in coronary heart disease.
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Affiliation(s)
- Wangwei He
- Department of Cardiology, the First Affiliated Hospital of Xiamen University, Xiamen, Fujian Province
| | - Liyuan Zhu
- Department of Cardiology, the First Affiliated Hospital of Xiamen University, Xiamen, Fujian Province
| | - Yu Huang
- Department of Cardiology, the First Affiliated Hospital of Xiamen University, Xiamen, Fujian Province
| | - Yinfen Zhang
- Department of Cardiology, the First Affiliated Hospital of Xiamen University, Xiamen, Fujian Province
| | - Weimin Shen
- Department of Cardiology, the First Affiliated Hospital of Xiamen University, Xiamen, Fujian Province
| | - Lihuan Fang
- Department of Cardiology, the First Affiliated Hospital of Xiamen University, Xiamen, Fujian Province
| | - Jun Li
- Department of Cardiology, the First Affiliated Hospital of Xiamen University, Xiamen, Fujian Province
| | - Zhuo Wang
- Department of Cardiology, Renmin Hospital of Wuhan University, Cardiovascular Research Institute of Wuhan University, Wuhan, Hubei Province, China
| | - Qiang Xie
- Department of Cardiology, the First Affiliated Hospital of Xiamen University, Xiamen, Fujian Province
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17
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Lavine KJ, Pinto AR, Epelman S, Kopecky BJ, Clemente-Casares X, Godwin J, Rosenthal N, Kovacic JC. The Macrophage in Cardiac Homeostasis and Disease: JACC Macrophage in CVD Series (Part 4). J Am Coll Cardiol 2019; 72:2213-2230. [PMID: 30360829 DOI: 10.1016/j.jacc.2018.08.2149] [Citation(s) in RCA: 143] [Impact Index Per Article: 28.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2018] [Revised: 07/13/2018] [Accepted: 08/03/2018] [Indexed: 12/24/2022]
Abstract
Macrophages are integral components of cardiac tissue and exert profound effects on the healthy and diseased heart. Paradigm shifting studies using advanced molecular techniques have revealed significant complexity within these macrophage populations that reside in the heart. In this final of a 4-part review series covering the macrophage in cardiovascular disease, the authors review the origins, dynamics, cell surface markers, and respective functions of each cardiac macrophage subset identified to date, including in the specific scenarios of myocarditis and after myocardial infarction. Looking ahead, a deeper understanding of the diverse and often dichotomous functions of cardiac macrophages will be essential for the development of targeted therapies to mitigate injury and orchestrate recovery of the diseased heart. Moreover, as macrophages are critical for cardiac healing, they are an emerging focus for therapeutic strategies aimed at minimizing cardiomyocyte death, ameliorating pathological cardiac remodeling, and for treating heart failure and after myocardial infarction.
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Affiliation(s)
- Kory J Lavine
- Division of Cardiovascular Medicine, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri; Center for Cardiovascular Research, Cardiovascular Division, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri; Department of Developmental Biology, Washington University School of Medicine, St. Louis, Missouri; Department of Immunology and Pathology, Washington University School of Medicine, St. Louis, Missouri
| | - Alexander R Pinto
- Baker Heart and Diabetes Research Institute, Melbourne, Australia; Centre for Cardiovascular Biology and Disease Research, La Trobe University, Melbourne, Australia
| | - Slava Epelman
- Toronto General Hospital Research Institute, University Health Network, Toronto, Ontario, Canada; Ted Rogers Centre for Heart Research, Toronto, Ontario, Canada; University of Toronto, Department of Laboratory Medicine and Pathobiology, Toronto, Ontario, Canada; Department of Immunology, University of Toronto, Toronto, Ontario, Canada; Peter Munk Cardiac Centre, Toronto, Ontario, Canada
| | - Benjamin J Kopecky
- Division of Cardiovascular Medicine, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri; Center for Cardiovascular Research, Cardiovascular Division, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri
| | - Xavier Clemente-Casares
- Toronto General Hospital Research Institute, University Health Network, Toronto, Ontario, Canada; Department of Immunology, University of Toronto, Toronto, Ontario, Canada
| | - James Godwin
- The Jackson Laboratory, Bar Harbor, Maine; Mt. Desert Island Biological Laboratory, Bar Harbor, Maine
| | - Nadia Rosenthal
- The Jackson Laboratory, Bar Harbor, Maine; National Heart and Lung Institute, Imperial College London, London, United Kingdom
| | - Jason C Kovacic
- Zena and Michael A. Wiener Cardiovascular Institute, Icahn School of Medicine at Mount Sinai, New York, New York.
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18
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Tourki B, Dumesnil A, Belaidi E, Ghrir S, Godin-Ribuot D, Marrakchi N, Richard V, Mulder P, Messadi E. Lebetin 2, a Snake Venom-Derived B-Type Natriuretic Peptide, Provides Immediate and Prolonged Protection against Myocardial Ischemia-Reperfusion Injury via Modulation of Post-Ischemic Inflammatory Response. Toxins (Basel) 2019; 11:toxins11090524. [PMID: 31510060 PMCID: PMC6784001 DOI: 10.3390/toxins11090524] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Revised: 08/08/2019] [Accepted: 08/16/2019] [Indexed: 12/11/2022] Open
Abstract
Myocardial infarction (MI) followed by left ventricular (LV) remodeling is the most frequent cause of heart failure. Lebetin 2 (L2), a snake venom-derived natriuretic peptide, exerts cardioprotection during acute myocardial ischemia-reperfusion (IR) ex vivo. However, its effects on delayed consequences of IR injury, including post-MI inflammation and fibrosis have not been defined. Here, we determined whether a single L2 injection exerts cardioprotection in IR murine models in vivo, and whether inflammatory response to ischemic injury plays a role in L2-induced effects. We quantified infarct size (IS), fibrosis, inflammation, and both endothelial cell and cardiomyocyte densities in injured myocardium and compared these values with those induced by B-type natriuretic peptide (BNP). Both L2 and BNP reduced IS, fibrosis, and inflammatory response after IR, as evidenced by decreased leukocyte and proinflammatory M1 macrophage infiltrations in the infarcted area compared to untreated animals. However, only L2 increased anti-inflammatory M2-like macrophages. L2 also induced a higher density of endothelial cells and cardiomyocytes. Our data show that L2 has strong, acute, prolonged cardioprotective effects in post-MI that are mediated, at least in part, by the modulation of the post-ischemic inflammatory response and especially, by the enhancement of M2-like macrophages, thus reducing IR-induced necrotic and fibrotic effects.
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Affiliation(s)
- Bochra Tourki
- Laboratoire des Venins et Biomolécules Thérapeutiques (LR11IPT08) et Plateforme de Physiologie et de Physiopathologie Cardiovasculaires (P2C), Institut Pasteur de Tunis, Université Tunis El Manar, 1068 Tunis, Tunisia.
- Université Carthage Tunis, 1054 Bizerte, Tunisia.
| | - Anais Dumesnil
- Normandie Univ, UNIROUEN, Inserm U1096, FHU REMOD-VHF, 76000 Rouen, France.
| | - Elise Belaidi
- Université Grenoble Alpes, Inserm U1042, Laboratoire HP2, 38000 Grenoble, France.
| | - Slim Ghrir
- Laboratoire des Venins et Biomolécules Thérapeutiques (LR11IPT08) et Plateforme de Physiologie et de Physiopathologie Cardiovasculaires (P2C), Institut Pasteur de Tunis, Université Tunis El Manar, 1068 Tunis, Tunisia.
| | - Diane Godin-Ribuot
- Université Grenoble Alpes, Inserm U1042, Laboratoire HP2, 38000 Grenoble, France.
| | - Naziha Marrakchi
- Laboratoire des Venins et Biomolécules Thérapeutiques (LR11IPT08) et Plateforme de Physiologie et de Physiopathologie Cardiovasculaires (P2C), Institut Pasteur de Tunis, Université Tunis El Manar, 1068 Tunis, Tunisia.
| | - Vincent Richard
- Normandie Univ, UNIROUEN, Inserm U1096, FHU REMOD-VHF, 76000 Rouen, France.
| | - Paul Mulder
- Normandie Univ, UNIROUEN, Inserm U1096, FHU REMOD-VHF, 76000 Rouen, France.
| | - Erij Messadi
- Laboratoire des Venins et Biomolécules Thérapeutiques (LR11IPT08) et Plateforme de Physiologie et de Physiopathologie Cardiovasculaires (P2C), Institut Pasteur de Tunis, Université Tunis El Manar, 1068 Tunis, Tunisia.
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19
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Wang Z, Koenig AL, Lavine KJ, Apte RS. Macrophage Plasticity and Function in the Eye and Heart. Trends Immunol 2019; 40:825-841. [PMID: 31422901 DOI: 10.1016/j.it.2019.07.002] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Revised: 07/05/2019] [Accepted: 07/17/2019] [Indexed: 12/12/2022]
Abstract
Macrophages are important mediators of inflammation and tissue remodeling. Recent insights into the heterogeneity of macrophage subpopulations have renewed interest in their functional diversity in homeostasis and disease. In addition, their plasticity enables them to perform a variety of functions in response to changing tissue contexts, such as those imposed by aging. These qualities make macrophages particularly intriguing cells given their dichotomous role in protecting against, or accelerating, diseases of the cardiovascular system and the eye, two tissues that are particularly susceptible to the effects of aging. We review novel perspectives on macrophage biology, as informed by recent studies detailing the diversity of macrophage identity and function, as well as mechanisms influencing macrophage behavior that might offer opportunities for new therapeutic strategies.
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Affiliation(s)
- Zelun Wang
- Department of Ophthalmology and Visual Sciences, Washington University School of Medicine, St. Louis, MO, USA; Neuroscience Graduate Program, Division of Biology and Biomedical Sciences, Washington University School of Medicine, St. Louis, MO, USA
| | - Andrew L Koenig
- Center for Cardiovascular Research, Division of Cardiology, Department of Medicine, Washington University School of Medicine, St. Louis, MO, USA
| | - Kory J Lavine
- Center for Cardiovascular Research, Division of Cardiology, Department of Medicine, Washington University School of Medicine, St. Louis, MO, USA; Department of Immunology and Pathology, Washington University School of Medicine, St. Louis, MO, USA; Department of Developmental Biology, Washington University School of Medicine, St. Louis, MO, USA
| | - Rajendra S Apte
- Department of Ophthalmology and Visual Sciences, Washington University School of Medicine, St. Louis, MO, USA; Department of Developmental Biology, Washington University School of Medicine, St. Louis, MO, USA; Department of Medicine, Washington University School of Medicine, St. Louis, MO, USA.
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20
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Yamashiro S, Uchikawa H, Yoshikawa M, Kuriwaki K, Hitoshi Y, Yoshida A, Komohara Y, Mukasa A. Histological analysis of infiltrating macrophages in the cerebral aneurysm walls. J Clin Neurosci 2019; 67:204-209. [PMID: 31227407 DOI: 10.1016/j.jocn.2019.05.027] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Accepted: 05/21/2019] [Indexed: 11/18/2022]
Abstract
A series of recent evidences suggested activated macrophages have broadly two distinct forms that possess opposite functions for the process of inflammation: classically activated macrophages (M1/kill macrophages) and alternatively activated macrophages (M2/repair macrophages) according to their functions and expression markers. To elucidate what roles those two phenotypes of macrophages play in the evolution of cerebral aneurysm, the presence of macrophages inside the aneurysm walls was assessed with an immunohistochemical approach. The portions of the aneurysm domes deflated after neck clipping were utilized for the further histological examinations, including immunostainings with five antibodies to identify macrophage subpopulations. In this study, contrary to the previous reports, the following various ratios of subtypes were observed in the aneurysm walls: M1 > M2 (2 cases), M1 < M2 (2 cases), M1 = M2 (3 cases). While M1-like macrophages have been typically regarded as a main driver of the degenerating process, these surprisingly richer presences of M2-like macrophages in the aneurysm walls suggests that an unrecognized biological process might be in play in aneurysm development.
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Affiliation(s)
- Shigeo Yamashiro
- Division of Neurosurgery, Department of Cerebrovascular Medicine and Surgery, Saiseikai Kumamoto Hospital, Japan.
| | - Hiroki Uchikawa
- Department of Neurosurgery, Minamata City General Hospital, Japan
| | - Makoto Yoshikawa
- Department of Neurosurgery, Minamata City General Hospital, Japan
| | - Kazumi Kuriwaki
- Department of Diagnostic Pathology, Kumamoto Rosai Hospital, Japan
| | | | | | - Yoshihiro Komohara
- Department of Cell Pathology, Graduate School of Medical Sciences, Kumamoto University, Japan
| | - Akitake Mukasa
- Department of Neurosurgery, Graduate School of Medical Sciences, Kumamoto University, Japan
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21
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Glezeva N, Moran B, Collier P, Moravec CS, Phelan D, Donnellan E, Russell-Hallinan A, O’Connor DP, Gallagher WM, Gallagher J, McDonald K, Ledwidge M, Baugh J, Das S, Watson CJ. Targeted DNA Methylation Profiling of Human Cardiac Tissue Reveals Novel Epigenetic Traits and Gene Deregulation Across Different Heart Failure Patient Subtypes. Circ Heart Fail 2019; 12:e005765. [DOI: 10.1161/circheartfailure.118.005765] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Nadezhda Glezeva
- UCD Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Ireland (N.G., B.M., A.R.-H., D.P.O., W.M.G., K.M., M.L., J.B., S.D., C.J.W.)
- Heart Failure Unit, St Vincent’s University Hospital Healthcare Group, Elm Park, Dublin, Ireland (N.G., J.G., K.M., M.L.)
- The Heartbeat Trust, Dun Laoghaire, Dublin, Ireland (N.G., K.M., M.L., C.J.W.)
| | - Bruce Moran
- UCD Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Ireland (N.G., B.M., A.R.-H., D.P.O., W.M.G., K.M., M.L., J.B., S.D., C.J.W.)
| | - Patrick Collier
- Department of Cardiovascular Medicine, Cleveland Clinic, OH (P.C., D.P., E.D.)
| | - Christine S. Moravec
- Department of Molecular Cardiology, Lerner Research Institute, Cleveland Clinic, OH (C.S.M.)
| | - Dermot Phelan
- Department of Cardiovascular Medicine, Cleveland Clinic, OH (P.C., D.P., E.D.)
| | - Eoin Donnellan
- Department of Cardiovascular Medicine, Cleveland Clinic, OH (P.C., D.P., E.D.)
| | - Adam Russell-Hallinan
- UCD Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Ireland (N.G., B.M., A.R.-H., D.P.O., W.M.G., K.M., M.L., J.B., S.D., C.J.W.)
| | - Darran P. O’Connor
- UCD Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Ireland (N.G., B.M., A.R.-H., D.P.O., W.M.G., K.M., M.L., J.B., S.D., C.J.W.)
- Department of Molecular and Cellular Therapeutics, Royal College of Surgeons in Ireland, Dublin, Ireland (D.P.O., S.D.)
| | - William M. Gallagher
- UCD Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Ireland (N.G., B.M., A.R.-H., D.P.O., W.M.G., K.M., M.L., J.B., S.D., C.J.W.)
| | - Joe Gallagher
- Heart Failure Unit, St Vincent’s University Hospital Healthcare Group, Elm Park, Dublin, Ireland (N.G., J.G., K.M., M.L.)
| | - Kenneth McDonald
- UCD Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Ireland (N.G., B.M., A.R.-H., D.P.O., W.M.G., K.M., M.L., J.B., S.D., C.J.W.)
- Heart Failure Unit, St Vincent’s University Hospital Healthcare Group, Elm Park, Dublin, Ireland (N.G., J.G., K.M., M.L.)
- The Heartbeat Trust, Dun Laoghaire, Dublin, Ireland (N.G., K.M., M.L., C.J.W.)
| | - Mark Ledwidge
- UCD Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Ireland (N.G., B.M., A.R.-H., D.P.O., W.M.G., K.M., M.L., J.B., S.D., C.J.W.)
- Heart Failure Unit, St Vincent’s University Hospital Healthcare Group, Elm Park, Dublin, Ireland (N.G., J.G., K.M., M.L.)
- The Heartbeat Trust, Dun Laoghaire, Dublin, Ireland (N.G., K.M., M.L., C.J.W.)
| | - John Baugh
- UCD Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Ireland (N.G., B.M., A.R.-H., D.P.O., W.M.G., K.M., M.L., J.B., S.D., C.J.W.)
| | - Sudipto Das
- UCD Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Ireland (N.G., B.M., A.R.-H., D.P.O., W.M.G., K.M., M.L., J.B., S.D., C.J.W.)
- Department of Molecular and Cellular Therapeutics, Royal College of Surgeons in Ireland, Dublin, Ireland (D.P.O., S.D.)
| | - Chris J. Watson
- UCD Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Ireland (N.G., B.M., A.R.-H., D.P.O., W.M.G., K.M., M.L., J.B., S.D., C.J.W.)
- The Heartbeat Trust, Dun Laoghaire, Dublin, Ireland (N.G., K.M., M.L., C.J.W.)
- The Wellcome-Wolfson Institute for Experimental Medicine, Queen’s University Belfast, Northern Ireland (C.J.W.)
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22
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M2 Macrophages as a Potential Target for Antiatherosclerosis Treatment. Neural Plast 2019; 2019:6724903. [PMID: 30923552 PMCID: PMC6409015 DOI: 10.1155/2019/6724903] [Citation(s) in RCA: 90] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Revised: 11/06/2018] [Accepted: 11/28/2018] [Indexed: 12/24/2022] Open
Abstract
Atherosclerosis is a chronic progressive inflammation course, which could induce life-threatening diseases such as stroke and myocardial infarction. Optimal medical treatments for atherosclerotic risk factors with current antihypertensive and lipid-lowering drugs (for example, statins) are widely used in clinical practice. However, many patients with established disease still continue to have recurrent cardiovascular events in spite of treatment with a state-of-the-art therapy. Atherosclerotic cardiovascular disease (ASCVD) remains the leading cause of mortality worldwide. Hence, current treatment of atherosclerosis is still far from being satisfactory. Recently, M2 macrophages have been found associated with atherosclerosis regression. The M2 phenotype can secrete anti-inflammatory factors such as IL-10 and TGF-β, promote tissue remodeling and repairing through collagen formation, and clear dying cells and debris by efferocytosis. Therefore, modulators targeting macrophages' polarization to the M2 phenotype could be another promising treatment strategy for atherosclerosis. Two main signaling pathways, the Akt/mTORC/LXR pathway and the JAK/STAT6 pathway, are found playing important roles in M2 polarization. In addition, researchers have reported several potential approaches to modulate M2 polarization. Inhibiting or activating some kinds of enzymes, affecting transcription factors, or acting on several membrane receptors could regulate the polarization of the M2 phenotype. Besides, biomolecules, for example vitamin D, were found to affect the process of M2 polarization. Pomegranate juice could promote M2 polarization via unclear mechanism. In this review, we will discuss how M2 macrophages affect atherosclerosis regression, signal transduction in M2 polarization, and outline potential targets and compounds that affect M2 polarization, thus controlling the progress of atherosclerosis.
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23
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Abstract
BACKGROUND Prostaglandin E2 (PGE2) signals through 4 separate G-protein coupled receptor sub-types to elicit a variety of physiologic and pathophysiological effects. We recently reported that PGE2 via its EP3 receptor could reduce cardiac contractility of isolated myocytes and the working heart preparation. We thus hypothesized that there is an imbalance in the EP3/EP4 ratio towards EP3 in the failing heart and that overexpression of EP4 in a mouse model of heart failure would improve cardiac function. METHODS AND RESULTS Our hypothesis was tested in a mouse model of myocardial infarction (MI) with the use of AAV9-EP4 driven by the myosin heavy chain promoter to overexpress EP4 in the cardiac myocytes. Echocardiography was performed to assess cardiac function. We found that overexpression of EP4 improved shortening fraction (p = 0.0025), ejection fraction (p = 0.0003), and reduced left ventricular dimension at systole (p = 0.0013). Overexpression of EP4 also significantly reduced indices of cardiac hypertrophy and interstitial collagen fraction. Animals treated with AAV9-EP4 also had a significant decrease in TNFα mRNA expression and in the number of macrophages and T cells migrated post MI coupled with a reduction in the expression of iNOS. CONCLUSION Overexpression of EP4 improves cardiac function post MI. This may be mediated through reductions in adverse cardiac remodeling or via inhibition of cytokine/chemokine production.
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Ishii M, Kaikita K, Sato K, Sueta D, Fujisue K, Arima Y, Oimatsu Y, Mitsuse T, Onoue Y, Araki S, Yamamuro M, Nakamura T, Izumiya Y, Yamamoto E, Kojima S, Kim-Mitsuyama S, Ogawa H, Tsujita K. Cardioprotective Effects of LCZ696 (Sacubitril/Valsartan) After Experimental Acute Myocardial Infarction. JACC Basic Transl Sci 2017; 2:655-668. [PMID: 30062181 PMCID: PMC6059351 DOI: 10.1016/j.jacbts.2017.08.001] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Revised: 08/20/2017] [Accepted: 08/20/2017] [Indexed: 12/11/2022]
Abstract
LCZ696 (sacubitril/valsartan) can lower the risk of cardiovascular events in chronic heart failure. However, it is unclear whether LCZ696 can improve prognosis in patients with acute myocardial infarction (MI). The present study shows that LCZ696 can prevent cardiac rupture after MI, probably due to the suppression of pro-inflammatory cytokines, matrix metalloproteinase-9 activity and aldosterone production, and enhancement of natriuretic peptides in mice. These findings suggest the mechanistic insight of cardioprotective effects of LCZ696 against acute MI, resulting in the belief that LCZ696 might be useful clinically to improve survival after acute MI.
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Affiliation(s)
- Masanobu Ishii
- Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Koichi Kaikita
- Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Koji Sato
- Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Daisuke Sueta
- Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Koichiro Fujisue
- Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Yuichiro Arima
- Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Yu Oimatsu
- Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Tatsuro Mitsuse
- Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Yoshiro Onoue
- Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Satoshi Araki
- Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Megumi Yamamuro
- Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Taishi Nakamura
- Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Yasuhiro Izumiya
- Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Eiichiro Yamamoto
- Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Sunao Kojima
- Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Shokei Kim-Mitsuyama
- Department of Pharmacology and Molecular Therapeutics, Kumamoto University, Kumamoto, Japan
| | - Hisao Ogawa
- Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center, Osaka, Japan
| | - Kenichi Tsujita
- Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
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25
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DeBerge M, Zhang S, Glinton K, Grigoryeva L, Hussein I, Vorovich E, Ho K, Luo X, Thorp EB. Efferocytosis and Outside-In Signaling by Cardiac Phagocytes. Links to Repair, Cellular Programming, and Intercellular Crosstalk in Heart. Front Immunol 2017; 8:1428. [PMID: 29163503 PMCID: PMC5671945 DOI: 10.3389/fimmu.2017.01428] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Accepted: 10/13/2017] [Indexed: 12/24/2022] Open
Abstract
Phagocytic sensing and engulfment of dying cells and extracellular bodies initiate an intracellular signaling cascade within the phagocyte that can polarize cellular function and promote communication with neighboring non-phagocytes. Accumulating evidence links phagocytic signaling in the heart to cardiac development, adult myocardial homeostasis, and the resolution of cardiac inflammation of infectious, ischemic, and aging-associated etiology. Phagocytic clearance in the heart may be carried out by professional phagocytes, such as macrophages, and non-professional cells, including myofibrolasts and potentially epithelial cells. During cardiac development, phagocytosis initiates growth cues for early cardiac morphogenesis. In diseases of aging, including myocardial infarction, heightened levels of cell death require efficient phagocytic debridement to salvage further loss of terminally differentiated adult cardiomyocytes. Additional risk factors, including insulin resistance and other systemic risk factors, contribute to inefficient phagocytosis, altered phagocytic signaling, and delayed cardiac inflammation resolution. Under such conditions, inflammatory presentation of myocardial antigen may lead to autoimmunity and even possible rejection of transplanted heart allografts. Increased understanding of these basic mechanisms offers therapeutic opportunities.
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Affiliation(s)
- Matthew DeBerge
- Department of Pathology, Feinberg Cardiovascular Research Institute, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States
| | - Shuang Zhang
- Department of Pathology, Feinberg Cardiovascular Research Institute, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States
| | - Kristofor Glinton
- Department of Pathology, Feinberg Cardiovascular Research Institute, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States
| | - Luba Grigoryeva
- Department of Pathology, Feinberg Cardiovascular Research Institute, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States
| | - Islam Hussein
- Department of Pathology, Feinberg Cardiovascular Research Institute, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States
| | - Esther Vorovich
- Department of Pathology, Feinberg Cardiovascular Research Institute, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States
| | - Karen Ho
- Department of Pathology, Feinberg Cardiovascular Research Institute, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States
| | - Xunrong Luo
- Department of Pathology, Feinberg Cardiovascular Research Institute, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States
| | - Edward B Thorp
- Department of Pathology, Feinberg Cardiovascular Research Institute, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States
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26
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Fujisue K, Sugamura K, Kurokawa H, Matsubara J, Ishii M, Izumiya Y, Kaikita K, Sugiyama S. Colchicine Improves Survival, Left Ventricular Remodeling, and Chronic Cardiac Function After Acute Myocardial Infarction. Circ J 2017; 81:1174-1182. [PMID: 28420825 DOI: 10.1253/circj.cj-16-0949] [Citation(s) in RCA: 74] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
BACKGROUND Several studies have reported that colchicine attenuated the infarct size and inflammation in acute myocardial infarction (MI). However, the sustained benefit of colchicine administration on survival and cardiac function after MI is unknown. It was hypothesized that the short-term treatment with colchicine could improve survival and cardiac function during the recovery phase of MI.Methods and Results:MI was induced in mice by permanent ligation of the left anterior descending coronary artery. Mice were then orally administered colchicine 0.1 mg/kg/day or vehicle from 1 h to day 7 after MI. Colchicine significantly improved survival rate (colchicine, n=48: 89.6% vs. vehicle, n=51: 70.6%, P<0.01), left ventricular end-diastolic diameter (5.0±0.2 vs. 5.6±0.2 mm, P<0.05) and ejection fraction (41.5±2.1 vs. 23.8±3.1%, P<0.001), as assessed by echocardiogram compared with vehicle at 4 weeks after MI. Heart failure development as pulmonary edema assessed by wet/dry lung weight ratio (5.0±0.1 vs. 5.5±0.2, P<0.01) and B-type natriuretic peptide expression in the heart was attenuated in the colchicine group at 4 weeks after MI. Histological and gene expression analysis revealed colchicine significantly inhibited the infiltration of neutrophils and macrophages, and attenuated the mRNA expression of pro-inflammatory cytokines and NLRP3 inflammasome components in the infarcted myocardium at 24 h after MI. CONCLUSIONS Short-term treatment with colchicine successfully attenuated pro-inflammatory cytokines and NLRP3 inflammasome, and improved cardiac function, heart failure, and survival after MI.
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Affiliation(s)
- Koichiro Fujisue
- Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kumamoto University
| | - Koichi Sugamura
- Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kumamoto University
| | - Hirofumi Kurokawa
- Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kumamoto University
| | - Junichi Matsubara
- Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kumamoto University
| | - Masanobu Ishii
- Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kumamoto University
| | - Yasuhiro Izumiya
- Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kumamoto University
| | - Koichi Kaikita
- Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kumamoto University
| | - Seigo Sugiyama
- Department of Cardiovascular Medicine, Graduate School of Medical Sciences, Kumamoto University
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Jiang Y, Chen X, Fan M, Li H, Zhu W, Chen X, Cao C, Xu R, Wang Y, Ma Y. TRAIL facilitates cytokine expression and macrophage migration during hypoxia/reoxygenation via ER stress-dependent NF-κB pathway. Mol Immunol 2017; 82:123-136. [PMID: 28073079 DOI: 10.1016/j.molimm.2016.12.023] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Revised: 11/23/2016] [Accepted: 12/30/2016] [Indexed: 12/23/2022]
Abstract
Tumor necrosis factor-related apoptosis-inducing ligand (TRAIL), which is known as a key molecule to induce cancer cell apoptosis, has also been found to participate in the process of ischemia/reperfusion (I/R) injury. Infiltrated macrophages play dual roles in inflammatory injury and healing following I/R. Whether TRAIL has any effect on macrophages during this process remains elusive. Here we showed that I/R triggered the expressions of TRAIL, DR5 and cytokines (IL-1β, TNFα, CCL-2 and ICAM-1), in addition to macrophage infiltration, which could be abolished by TRAIL neutralizing antibody. In vitro, TRAIL enhanced DR5 expression and facilitated the macrophages migration following hypoxia/reoxygenation (H/R) treatment in a dose-dependent manner via ER stress and NF-κB signaling pathways, which is accompanied by inflammatory factors expression. The increased cytokines production (such as TNFα and IL-1β) stimulated by TRAIL can be blocked by the NF-κB and ER stress inhibitor. The results also suggested that NF-κB activation of macrophages during H/R was regulated by ER stress. Thus, our research present that TRAIL affects functional activities of macrophages during I/R injury, which may be a potential therapeutic target for ischemic heart disease.
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Affiliation(s)
- Yinan Jiang
- School of Basic Medical Science, Zhengzhou University, Zhengzhou, Henan 450002, China
| | - Xiaoyan Chen
- Henan Key Laboratory of Engineering Antibody Medicine, Medical College of Henan University, Kaifeng, Henan 475004, China
| | - Mengya Fan
- Henan Key Laboratory of Engineering Antibody Medicine, Medical College of Henan University, Kaifeng, Henan 475004, China
| | - Hui Li
- Henan Key Laboratory of Engineering Antibody Medicine, Medical College of Henan University, Kaifeng, Henan 475004, China
| | - Weina Zhu
- Henan Key Laboratory of Engineering Antibody Medicine, Medical College of Henan University, Kaifeng, Henan 475004, China
| | - Xi Chen
- Henan Key Laboratory of Engineering Antibody Medicine, Medical College of Henan University, Kaifeng, Henan 475004, China
| | - Chenghua Cao
- Henan Key Laboratory of Engineering Antibody Medicine, Medical College of Henan University, Kaifeng, Henan 475004, China
| | - Rui Xu
- Henan Key Laboratory of Engineering Antibody Medicine, Medical College of Henan University, Kaifeng, Henan 475004, China
| | - Yaohui Wang
- Henan Key Laboratory of Engineering Antibody Medicine, Medical College of Henan University, Kaifeng, Henan 475004, China.
| | - Yuanfang Ma
- School of Basic Medical Science, Zhengzhou University, Zhengzhou, Henan 450002, China; Henan Key Laboratory of Engineering Antibody Medicine, Medical College of Henan University, Kaifeng, Henan 475004, China.
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Hasan AS, Luo L, Yan C, Zhang TX, Urata Y, Goto S, Mangoura SA, Abdel-Raheem MH, Zhang S, Li TS. Cardiosphere-Derived Cells Facilitate Heart Repair by Modulating M1/M2 Macrophage Polarization and Neutrophil Recruitment. PLoS One 2016; 11:e0165255. [PMID: 27764217 PMCID: PMC5072626 DOI: 10.1371/journal.pone.0165255] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Accepted: 10/07/2016] [Indexed: 12/23/2022] Open
Abstract
Cardiosphere-derived cells (CDCs), one of the promising stem cell sources for myocardial repair, have been tested in clinical trials and resulted in beneficial effects; however, the relevant mechanisms are not fully understood. In this study, we examined the hypothesis that CDCs favor heart repair by switching the macrophages from a pro-inflammatory phenotype (M1) into a regulatory anti-inflammatory phenotype (M2). Macrophages from mice were cultured with CDCs-conditioned medium or with fibroblasts-conditioned medium as a control. Immunostaining showed that CDCs-conditioned medium significantly enhanced the expression of CD206 (a marker for M2 macrophages), but decreased the expression of CD86 (a marker for M1 macrophages) 3 days after culture. For animal studies, we used an acute myocardial infarction model of mice. We injected CDCs, fibroblasts, or saline only into the border zone of infarction. Then we collected the heart tissues for histological analysis 5 and 14 days after treatment. Compared with control animals, CDCs treatment significantly decreased M1 macrophages and neutrophils but increased M2 macrophages in the infarcted heart. Furthermore, CDCs-treated mice had reduced infarct size and fewer apoptotic cells compared to the controls. Our data suggest that CDCs facilitate heart repair by modulating M1/M2 macrophage polarization and neutrophil recruitment, which may provide a new insight into the mechanisms of stem cell-based myocardial repair.
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Affiliation(s)
- Al Shaimaa Hasan
- Department of Stem Cell Biology, Atomic Bomb Institute, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
- Department of Medical Pharmacology, Qena Faculty of Medicine, South Valley University, Qena, Egypt
| | - Lan Luo
- Department of Stem Cell Biology, Atomic Bomb Institute, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Chen Yan
- Department of Stem Cell Biology, Atomic Bomb Institute, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Tian-Xia Zhang
- Department of Stem Cell Biology, Atomic Bomb Institute, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Yoshishige Urata
- Department of Stem Cell Biology, Atomic Bomb Institute, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Shinji Goto
- Department of Stem Cell Biology, Atomic Bomb Institute, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Safwat A. Mangoura
- Department of Medical Pharmacology, Qena Faculty of Medicine, South Valley University, Qena, Egypt
| | - Mahmoud H. Abdel-Raheem
- Department of Medical Pharmacology, Qena Faculty of Medicine, South Valley University, Qena, Egypt
| | - Shouhua Zhang
- Department of General Surgery, Jiangxi Provincial Children's Hospital, Nanchang, Jiangxi, China
| | - Tao-Sheng Li
- Department of Stem Cell Biology, Atomic Bomb Institute, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
- * E-mail:
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Mazur A, Holthoff E, Vadali S, Kelly T, Post SR. Cleavage of Type I Collagen by Fibroblast Activation Protein-α Enhances Class A Scavenger Receptor Mediated Macrophage Adhesion. PLoS One 2016; 11:e0150287. [PMID: 26934296 PMCID: PMC4774960 DOI: 10.1371/journal.pone.0150287] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Accepted: 02/11/2016] [Indexed: 12/20/2022] Open
Abstract
Pathophysiological conditions such as fibrosis, inflammation, and tumor progression are associated with modification of the extracellular matrix (ECM). These modifications create ligands that differentially interact with cells to promote responses that drive pathological processes. Within the tumor stroma, fibroblasts are activated and increase the expression of type I collagen. In addition, activated fibroblasts specifically express fibroblast activation protein-α (FAP), a post-prolyl peptidase. Although FAP reportedly cleaves type I collagen and contributes to tumor progression, the specific pathophysiologic role of FAP is not clear. In this study, the possibility that FAP-mediated cleavage of type I collagen modulates macrophage interaction with collagen was examined using macrophage adhesion assays. Our results demonstrate that FAP selectively cleaves type I collagen resulting in increased macrophage adhesion. Increased macrophage adhesion to FAP-cleaved collagen was not affected by inhibiting integrin-mediated interactions, but was abolished in macrophages lacking the class A scavenger receptor (SR-A/CD204). Further, SR-A expressing macrophages localize with activated fibroblasts in breast tumors of MMTV-PyMT mice. Together, these results demonstrate that FAP-cleaved collagen is a substrate for SR-A-dependent macrophage adhesion, and suggest that by modifying the ECM, FAP plays a novel role in mediating communication between activated fibroblasts and macrophages.
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Affiliation(s)
- Anna Mazur
- Interdisciplinary Biomedical Sciences Program, University of Arkansas for Medical Sciences, Little Rock, Arkansas, United States of America
| | - Emily Holthoff
- Interdisciplinary Biomedical Sciences Program, University of Arkansas for Medical Sciences, Little Rock, Arkansas, United States of America
| | - Shanthi Vadali
- Department of Pharmacology and Toxicology, University of Arkansas for Medical Sciences, Little Rock, Arkansas, United States of America
| | - Thomas Kelly
- Department of Pathology, University of Arkansas for Medical Sciences, Little Rock, Arkansas, United States of America
| | - Steven R. Post
- Department of Pathology, University of Arkansas for Medical Sciences, Little Rock, Arkansas, United States of America
- * E-mail:
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Gu X, Xu J, Yang XP, Peterson E, Harding P. Fractalkine neutralization improves cardiac function after myocardial infarction. Exp Physiol 2015; 100:805-17. [PMID: 25943588 DOI: 10.1113/ep085104] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2015] [Accepted: 04/30/2015] [Indexed: 12/16/2022]
Abstract
NEW FINDINGS What is the central question of this study? What is the cardioprotective role of fractalkine neutralization in heart failure and what are the mechanisms responsible? What is the main finding and its importance? The concentration of fractalkine is increased in the left ventricle of mice with myocardial infarction, similar to the increases in plasma from heart failure patients. The present study shows a clear beneficial effect of neutralizing fractalkine in a model of myocardial infarction, which results in increased survival. Such an approach may be worthwhile in human patients. Concentrations of the chemokine fractalkine (FKN) are increased in patients with chronic heart failure, and our previous studies show that aged mice lacking the prostaglandin E2 EP4 receptor subtype (EP4-KO) have increased cardiac FKN, with a phenotype of dilated cardiomyopathy. However, how FKN participates in the pathogenesis of heart failure has rarely been studied. We hypothesized that FKN contributes to the pathogenesis of heart failure and that anti-FKN treatment prevents heart failure induced by myocardial infarction (MI) more effectively in EP4-KO mice. Male EP4-KO mice and wild-type littermates underwent sham or MI surgery and were treated with an anti-FKN antibody or control IgG. At 2 weeks post-MI, echocardiography was performed and hearts were excised for determination of infarct size, immunohistochemistry and Western blot of signalling molecules. Given that FKN protein levels in the left ventricle were increased to a similar extent in both strains after MI and that anti-FKN treatment improved survival and cardiac function in both strains, we subsequently used only wild-type mice to examine the mechanisms whereby anti-FKN is cardioprotective. Myocyte cross-sectional area and interstitial collagen fraction were reduced after anti-FKN treatment, as were macrophage migration and gelatinase activity. Activation of ERK1/2 and p38 MAPK were reduced after neutralization of FKN. In vitro, FKN increased fibroblast proliferation. In conclusion, increased FKN contributes to heart failure after MI. This effect is not exacerbated in EP4-KO mice, suggesting that there is no link between FKN and lack of EP4. Overall, inhibition of FKN may be important to preserve cardiac function post-MI.
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Affiliation(s)
- Xiaosong Gu
- Hypertension and Vascular Research Division, Department of Internal Medicine, Henry Ford Hospital, Detroit, MI, 48202, USA.,Department of Cardiology, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu, 215004, China
| | - Jiang Xu
- Hypertension and Vascular Research Division, Department of Internal Medicine, Henry Ford Hospital, Detroit, MI, 48202, USA
| | - Xiao-Ping Yang
- Hypertension and Vascular Research Division, Department of Internal Medicine, Henry Ford Hospital, Detroit, MI, 48202, USA
| | - Edward Peterson
- Department of Public Health Sciences, Henry Ford Hospital, Detroit, MI, 48202, USA
| | - Pamela Harding
- Hypertension and Vascular Research Division, Department of Internal Medicine, Henry Ford Hospital, Detroit, MI, 48202, USA
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Ben J, Zhu X, Zhang H, Chen Q. Class A1 scavenger receptors in cardiovascular diseases. Br J Pharmacol 2015; 172:5523-30. [PMID: 25651870 DOI: 10.1111/bph.13105] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2014] [Revised: 01/15/2015] [Accepted: 02/02/2015] [Indexed: 01/03/2023] Open
Abstract
Class A1 scavenger receptors (SR-A1) are membrane glycoproteins that can form homotrimers. This receptor was originally defined by its ability to mediate the accumulation of lipids in macrophages. Subsequent studies reveal that SR-A1 plays critical roles in innate immunity, cell apoptosis and proliferation. This review highlights recent advances in understanding the structure, receptor pathway and regulation of SR-A1. Although its role in atherosclerosis is disputable, recent discoveries suggest that SR-A1 function in anti-inflammatory responses by promoting an M2 macrophage phenotype in cardiovascular diseases. Therefore, SR-A1 may be a potential target for therapeutic intervention of cardiovascular diseases.
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Affiliation(s)
- Jingjing Ben
- Atherosclerosis Research Center, Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, Nanjing, 210029, China
| | - Xudong Zhu
- Atherosclerosis Research Center, Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, Nanjing, 210029, China
| | - Hanwen Zhang
- Atherosclerosis Research Center, Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, Nanjing, 210029, China
| | - Qi Chen
- Atherosclerosis Research Center, Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, Nanjing, 210029, China
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32
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Nikolic DM, Vadali S, He B, Ware J, Kelly T, Post SR. Prostaglandins produced during class A scavenger receptor-mediated macrophage adhesion differentially regulate cytokine production. J Leukoc Biol 2015; 97:901-908. [PMID: 25717147 DOI: 10.1189/jlb.2a1014-471rr] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2014] [Revised: 01/28/2015] [Accepted: 02/02/2015] [Indexed: 01/04/2023] Open
Abstract
Inflammation is associated with modification of the extracellular environment, changes in cytokine expression, and the accumulation of immune cells. Such modifications create ligands that support SR-A-mediated macrophage adhesion and retention. This may be particularly important in settings, such as atherosclerosis and diabetes, as modified lipoproteins and gluc-collagen are ligands for SR-A. SR-A-mediated adhesion requires the PLA2-dependent generation of AA and its metabolism by 12/15 LOX. In contrast, the inhibition of the COX-dependent conversion of AA to PG had no effect on SR-A-mediated adhesion. In this study, macrophages were isolated from SR-A+/+ and SR-A-/- mice and plated on gluc-collagen to test the hypothesis that COX-derived PGs are produced during SR-A-mediated adhesion and regulate macrophage function. SR-A-mediated binding to gluc-collagen induced a rapid but transient increase in PG production, which required the activation of PLA2 and Src kinase but not PI3K. SR-A+/+ macrophages cultured on gluc-collagen for 24 h secreted a similar amount of TNF-α and 2.5-fold more IL-10 than SR-A-/- macrophages. The inhibition of COX substantially increased TNF-α production but reduced IL-10 levels in SR-A+/+ macrophages. These effects of COX inhibition were reversed by exogenous PGE2 and mimicked by specific antagonism of the EP4 receptor. Thus, in addition to the enhancement of macrophage adhesion, SR-A binding to gluc-collagen stimulates PG production, which in turn, differentially regulates the expression of inflammatory cytokines.
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Affiliation(s)
- Dejan M Nikolic
- Departments of *Pathology, Pharmacology and Toxicology, and Physiology and Biophysics, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
| | - Shanthi Vadali
- Departments of *Pathology, Pharmacology and Toxicology, and Physiology and Biophysics, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
| | - Beixiang He
- Departments of *Pathology, Pharmacology and Toxicology, and Physiology and Biophysics, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
| | - Jerry Ware
- Departments of *Pathology, Pharmacology and Toxicology, and Physiology and Biophysics, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
| | - Thomas Kelly
- Departments of *Pathology, Pharmacology and Toxicology, and Physiology and Biophysics, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
| | - Steven R Post
- Departments of *Pathology, Pharmacology and Toxicology, and Physiology and Biophysics, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
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33
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Kelley JL, Ozment TR, Li C, Schweitzer JB, Williams DL. Scavenger receptor-A (CD204): a two-edged sword in health and disease. Crit Rev Immunol 2015; 34:241-61. [PMID: 24941076 DOI: 10.1615/critrevimmunol.2014010267] [Citation(s) in RCA: 100] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Scavenger receptor A (SR-A), also known as the macrophage scavenger receptor and cluster of differentiation 204 (CD204), plays roles in lipid metabolism, atherogenesis, and a number of metabolic processes. However, recent evidence points to important roles for SR-A in inflammation, innate immunity, host defense, sepsis, and ischemic injury. Herein, we review the role of SR-A in inflammation, innate immunity, host defense, sepsis, cardiac and cerebral ischemic injury, Alzheimer's disease, virus recognition and uptake, bone metabolism, and pulmonary injury. Interestingly, SR-A is reported to be host protective in some disease states, but there is also compelling evidence that SR-A plays a role in the pathophysiology of other diseases. These observations of both harmful and beneficial effects of SR-A are discussed here in the framework of inflammation, innate immunity, and endoplasmic reticulum stress.
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Affiliation(s)
- Jim L Kelley
- Departments of Internal Medicine, James H. Quillen College of Medicine, East Tennessee State University, Johnson City, TN 37614
| | - Tammy R Ozment
- Departments of Surgery, James H. Quillen College of Medicine, East Tennessee State University, Johnson City, TN 37614
| | - Chuanfu Li
- Departments of Surgery, James H. Quillen College of Medicine, East Tennessee State University, Johnson City, TN 37614
| | - John B Schweitzer
- Departments of Pathology, James H. Quillen College of Medicine, East Tennessee State University, Johnson City, TN 37614
| | - David L Williams
- Departments of Surgery, James H. Quillen College of Medicine, East Tennessee State University, Johnson City, TN 37614
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34
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Shimizu M, Yasuda H, Hara K, Takahashi K, Nagata M, Yokono K. The dual role of scavenger receptor class A in development of diabetes in autoimmune NOD mice. PLoS One 2014; 9:e109531. [PMID: 25343451 PMCID: PMC4208757 DOI: 10.1371/journal.pone.0109531] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2014] [Accepted: 09/01/2014] [Indexed: 12/16/2022] Open
Abstract
Human type 1 diabetes is an autoimmune disease that results from the autoreactive destruction of pancreatic β cells by T cells. Antigen presenting cells including dendritic cells and macrophages are required to activate and suppress antigen-specific T cells. It has been suggested that antigen uptake from live cells by dendritic cells via scavenger receptor class A (SR-A) may be important. However, the role of SR-A in autoimmune disease is unknown. In this study, SR-A-/- nonobese diabetic (NOD) mice showed significant attenuation of insulitis, lower levels of insulin autoantibodies, and suppression of diabetes development compared with NOD mice. We also found that diabetes progression in SR-A-/- NOD mice treated with low-dose polyinosinic-polycytidylic acid (poly(I:C)) was significantly accelerated compared with that in disease-resistant NOD mice treated with low-dose poly(I:C). In addition, injection of high-dose poly(I: C) to mimic an acute RNA virus infection significantly accelerated diabetes development in young SR-A-/- NOD mice compared with untreated SR-A-/- NOD mice. Pathogenic cells including CD4+CD25+ activated T cells were increased more in SR-A-/- NOD mice treated with poly(I:C) than in untreated SR-A-/- NOD mice. These results suggested that viral infection might accelerate diabetes development even in diabetes-resistant subjects. In conclusion, our studies demonstrated that diabetes progression was suppressed in SR-A-/- NOD mice and that acceleration of diabetes development could be induced in young mice by poly(I:C) treatment even in SR-A-/- NOD mice. These results suggest that SR-A on antigen presenting cells such as dendritic cells may play an unfavorable role in the steady state and a protective role in a mild infection. Our findings imply that SR-A may be an important target for improving therapeutic strategies for type 1 diabetes.
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Affiliation(s)
- Mami Shimizu
- Department of General Internal Medicine, Kobe University Graduate School of Medicine, Chuo-ku, Kobe, Japan
| | - Hisafumi Yasuda
- Department of General Internal Medicine, Kobe University Graduate School of Medicine, Chuo-ku, Kobe, Japan
- Division of Health Sciences, Department of Community Health Sciences, Kobe University Graduate School of Health Sciences, Suma-ku, Kobe, Japan
- * E-mail:
| | - Kenta Hara
- Department of General Internal Medicine, Kobe University Graduate School of Medicine, Chuo-ku, Kobe, Japan
| | - Kazuma Takahashi
- Division of Diabetes and Metabolism, Department of Internal Medicine, Iwate Medical University School of Medicine, Morioka, Japan
| | - Masao Nagata
- Division of Internal Medicine and Diabetes, Kakogawa West City Hospital, Kakogawa, Japan
| | - Koichi Yokono
- Department of General Internal Medicine, Kobe University Graduate School of Medicine, Chuo-ku, Kobe, Japan
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35
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Electro-acupuncture at Neiguan pretreatment alters genome-wide gene expressions and protects rat myocardium against ischemia-reperfusion. Molecules 2014; 19:16158-78. [PMID: 25302705 PMCID: PMC6271995 DOI: 10.3390/molecules191016158] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2014] [Revised: 09/12/2014] [Accepted: 09/15/2014] [Indexed: 12/14/2022] Open
Abstract
This study investigated genome-wide gene expressions and the cardioprotective effects of electro-acupuncture pretreatment at the PC6 Neiguan acupoint on myocardial ischemia reperfusion (I/R) injury. Male SD rats were randomly divided into four groups: sham operation (SO), I/R, electro-acupuncture at the PC6 Neiguan acupoint pretreatment (EA) and electro-acupuncture at non-acupoint pretreatment (NA). Compared with the I/R group, the survival rate of the EA group was significantly increased, the arrhythmia score, infarction area, serum concentrations of CK, LDH and CK-Mb and plasma level of cTnT were significantly decreased. RNA-seq results showed that 725 genes were up-regulated and 861 genes were down-regulated under I/R conditions compared to the SO group; both EA and NA reversed some of these gene expression levels (592 in EA and 238 in NA group). KEGG pathway analysis indicated that these genes were involved in multiple pathways, including ECM, MAPK signaling, apoptosis, cytokine and leukocyte pathways. In addition, some pathways were uniquely regulated by EA, but not NA pretreatment, such as oxidative stress, cardiac muscle contraction, gap junction, vascular smooth muscle contraction, hypertrophic, NOD-like receptor, and P53 and B-cell receptor pathways. This study was first to reveal the gene expression signatures of acute myocardial I/R injury and electro-acupuncture pretreatment in rats.
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36
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Class A scavenger receptor deficiency augments angiotensin II-induced vascular remodeling. Biochem Pharmacol 2014; 90:254-64. [DOI: 10.1016/j.bcp.2014.05.015] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Revised: 05/17/2014] [Accepted: 05/19/2014] [Indexed: 11/23/2022]
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37
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Vadali S, Post SR. Lipid rafts couple class A scavenger receptors to phospholipase A2 activation during macrophage adhesion. J Leukoc Biol 2014; 96:873-81. [PMID: 25070949 DOI: 10.1189/jlb.2a0414-214r] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
SR-A mediated macrophage adhesion to modified ECM proteins in a process that involves physical attachment of SR-A to modified ECM and activation of Lyn-PI3K and PLA2-12/15-lipoxygenase signaling pathways. Structurally, SR-A-mediated cell adhesion requires a 6-aa membrane-proximal cytoplasmic motif. However, the mechanism that couples SR-A-mediated adhesion to activation of these distinct signaling pathways is not known. For other adhesion receptors, including integrins, localization in cholesterol-rich LRs is an important mechanism for coupling the receptor with the activation of specific signaling pathways. We hypothesized that SR-A-mediated macrophage adhesion might also involve LRs. Our results demonstrate that SR-A is enriched in LRs in HEK cells that heterologously express SR-A and in macrophages that endogenously expressed the receptor. We further show that a truncated SR-A construct (SR-A(Δ1-49)), which mediates cell adhesion but not ligand internalization, is also enriched in LRs, suggesting an association between LRs and SR-A-dependent cell adhesion. To examine this association more directly, we used the cholesterol chelator MβCD to deplete cholesterol and disrupt LR function. We found that cholesterol depletion significantly decreased SR-A-mediated macrophage adhesion. We further show that decreased SR-A-dependent macrophage adhesion following cholesterol depletion results from the inhibition of PLA2 but not PI3K activation. Overall, our results demonstrate an important role for LRs in selectively coupling SR-A with PLA2 activation during macrophage adhesion.
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Affiliation(s)
| | - Steven R Post
- Departments of Pharmacology and Toxicology and Pathology, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
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38
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Zhu X, Zong G, Zhu L, Jiang Y, Ma K, Zhang H, Zhang Y, Bai H, Yang Q, Ben J, Li X, Xu Y, Chen Q. Deletion of class A scavenger receptor deteriorates obesity-induced insulin resistance in adipose tissue. Diabetes 2014; 63:562-77. [PMID: 24170693 DOI: 10.2337/db13-0815] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Chronic low-grade inflammation, particularly in the adipose tissue, orchestrates obesity-induced insulin resistance. In this process, polarized activation of macrophages plays a crucial role. However, how macrophages contribute to insulin resistance remains obscure. Class A scavenger receptor (SR-A) is a pattern recognition receptor primarily expressed in macrophages. Through a combination of in vivo and in vitro studies, we report here that deletion of SR-A resulted in reduced insulin sensitivity in obese mice. The anti-inflammatory virtue of SR-A was accomplished by favoring M2 macrophage polarization in adipose tissue. Moreover, we demonstrate that lysophosphatidylcholine (LPC) served as an obesity-related endogenous ligand for SR-A promoting M2 macrophage polarization by activation of signal transducer and activator of transcription 6 signaling. These data have unraveled a clear mechanistic link between insulin resistance and inflammation mediated by the LPC/SR-A pathway in macrophages.
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Affiliation(s)
- Xudong Zhu
- Atherosclerosis Research Center, Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, Nanjing, China
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39
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Li B, Yu M, Pan X, Ren C, Peng W, Li X, Jiang W, Zheng J, Zhou H. Artesunate reduces serum lipopolysaccharide in cecal ligation/puncture mice via enhanced LPS internalization by macrophages through increased mRNA expression of scavenger receptors. Int J Mol Sci 2014; 15:1143-61. [PMID: 24441569 PMCID: PMC3907860 DOI: 10.3390/ijms15011143] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2013] [Revised: 01/02/2014] [Accepted: 01/09/2014] [Indexed: 11/24/2022] Open
Abstract
Innate immunity is the first line of defense in human beings against pathogen infection; monocytes/macrophages are the primary cells of the innate immune system. Recently, macrophages/monocytes have been discovered to participate in LPS clearance, and the clearance efficiency determines the magnitude of the inflammatory response and subsequent organ injury. Previously, we reported that artesunate (AS) protected sepsis mice against heat-killed E. coli challenge. Herein, we further confirmed that AS protected cecal ligation/puncture (CLP) sepsis mice. Its protection on sepsis mice was related to not only reduction of pro-inflammatory cytokines and serum LPS levels but also improvement of liver function. Based on the fact that AS did not directly bind and neutralize LPS, we hypothesized that the reduction of serum LPS level might be related to enhancement of LPS internalization and subsequent detoxification. Our results showed that AS increased FITC-LPS internalization by peritoneal macrophage and liver Kupffer cell, but enhancement of LPS internalization by AS was not related to the clathrin-dependent pathway. However, AS induced mRNA expression of important scavenger receptors (SRs); SR-A and MARCO mRNA expression was upregulated, suggesting that AS enhancement of LPS internalization and inhibition of pro-inflammatory cytokines was related to changes in mRNA expression of SRs.
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Affiliation(s)
- Bin Li
- Department of Pharmacology, College of Pharmacy, Third Military Medical University, Chongqing 400038, China.
| | - Mengchen Yu
- Department of Pharmacology, College of Pharmacy, Third Military Medical University, Chongqing 400038, China.
| | - Xichun Pan
- Department of Pharmacology, College of Pharmacy, Third Military Medical University, Chongqing 400038, China.
| | - Chuanliang Ren
- Department of Pharmacology, College of Pharmacy, Third Military Medical University, Chongqing 400038, China.
| | - Wei Peng
- Department of Pharmacology, College of Pharmacy, Third Military Medical University, Chongqing 400038, China.
| | - Xiaoli Li
- Department of Pharmacology, College of Pharmacy, Third Military Medical University, Chongqing 400038, China.
| | - Weiwei Jiang
- Department of Pharmacology, College of Pharmacy, Third Military Medical University, Chongqing 400038, China.
| | - Jiang Zheng
- Department of Pharmacology, College of Pharmacy, Third Military Medical University, Chongqing 400038, China.
| | - Hong Zhou
- Department of Pharmacology, College of Pharmacy, Third Military Medical University, Chongqing 400038, China.
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Patel OV, Wilson WB, Qin Z. Production of LPS-induced inflammatory mediators in murine peritoneal macrophages: neocuproine as a broad inhibitor and ATP7A as a selective regulator. Biometals 2013; 26:415-25. [DOI: 10.1007/s10534-013-9624-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2012] [Accepted: 03/27/2013] [Indexed: 11/28/2022]
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Inflammatory mediator profiling reveals immune properties of chemotactic gradients and macrophage mediator production inhibition during thioglycollate elicited peritoneal inflammation. Mediators Inflamm 2013; 2013:931562. [PMID: 23606798 PMCID: PMC3628185 DOI: 10.1155/2013/931562] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2012] [Revised: 02/17/2013] [Accepted: 02/24/2013] [Indexed: 11/17/2022] Open
Abstract
Understanding of spatiotemporal profiling of inflammatory mediators and their associations with MΦ accumulation is crucial to elucidate the complex immune properties. Here, we used murine thioglycollate elicited peritonitis to determine concentrations of 23 inflammatory mediators in peritoneal exudates and plasma before (day 0) and after (days 1 and 3) thioglycollate administration to peritoneal cavities; these mediators included TNF-α, FGF-9, IFN-γ, IP-10, RANTES, IL-1α, IL-6, IL-7, IL-10, IL-11, IL-12p70, IL-17A, lymphotactin, OSM, KC/GRO, SCF, MIP-1β, MIP-2, TIMP-1, VEGF-A, MCP-1, MCP-3, and MCP-5. Our results showed that concentrations of most mediators in exudates and plasma reached peak levels on day 1 and were significantly reduced on day 3. Conversely, MΦ numbers started to increase on day 1 and reached peak levels on day 3. Moreover, LPS treatment in vitro significantly induced mediator productions in cell culture media and lysates from MΦ isolated on day 3. Our results also showed that on day 0, concentrations of many mediators in plasma were higher than those in exudates, whereas on day 1, the trend was reversed. Overall, the findings from thioglycollate elicited peritonitis reveal that reversible chemotactic gradients between peritoneal exudates and blood exist in basal and inflamed conditions and the inflammatory mediator production in vivo is disassociated with macrophage accumulation during inflammation resolution.
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Ma Y, Halade GV, Zhang J, Ramirez TA, Levin D, Voorhees A, Jin YF, Han HC, Manicone AM, Lindsey ML. Matrix metalloproteinase-28 deletion exacerbates cardiac dysfunction and rupture after myocardial infarction in mice by inhibiting M2 macrophage activation. Circ Res 2013; 112:675-88. [PMID: 23261783 PMCID: PMC3597388 DOI: 10.1161/circresaha.111.300502] [Citation(s) in RCA: 168] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2012] [Accepted: 12/19/2012] [Indexed: 12/31/2022]
Abstract
RATIONALE Matrix metalloproteinase (MMP)-28 regulates the inflammatory and extracellular matrix responses in cardiac aging, but the roles of MMP-28 after myocardial infarction (MI) have not been explored. OBJECTIVE To determine the impact of MMP-28 deletion on post-MI remodeling of the left ventricle (LV). METHODS AND RESULTS Adult C57BL/6J wild-type (n=76) and MMP null (MMP-28((-/-)), n=86) mice of both sexes were subjected to permanent coronary artery ligation to create MI. MMP-28 expression decreased post-MI, and its cell source shifted from myocytes to macrophages. MMP-28 deletion increased day 7 mortality because of increased cardiac rupture post-MI. MMP-28(-/-) mice exhibited larger LV volumes, worse LV dysfunction, a worse LV remodeling index, and increased lung edema. Plasma MMP-9 levels were unchanged in the MMP-28((-/-)) mice but increased in wild-type mice at day 7 post-MI. The mRNA levels of inflammatory and extracellular matrix proteins were attenuated in the infarct regions of MMP-28(-/-) mice, indicating reduced inflammatory and extracellular matrix responses. M2 macrophage activation was impaired when MMP-28 was absent. MMP-28 deletion also led to decreased collagen deposition and fewer myofibroblasts. Collagen cross-linking was impaired as a result of decreased expression and activation of lysyl oxidase in the infarcts of MMP-28(-/-) mice. The LV tensile strength at day 3 post-MI, however, was similar between the 2 genotypes. CONCLUSIONS MMP-28 deletion aggravated MI-induced LV dysfunction and rupture as a result of defective inflammatory response and scar formation by suppressing M2 macrophage activation.
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MESH Headings
- Animals
- Cell Adhesion Molecules/biosynthesis
- Cell Adhesion Molecules/genetics
- Cicatrix/enzymology
- Cicatrix/etiology
- Collagen/metabolism
- Cytokines/biosynthesis
- Cytokines/genetics
- Extracellular Matrix Proteins/biosynthesis
- Extracellular Matrix Proteins/genetics
- Female
- Gene Expression Regulation
- Heart Rupture/enzymology
- Heart Rupture/etiology
- Inflammation
- Macrophage Activation/physiology
- Macrophages/classification
- Macrophages/enzymology
- Male
- Matrix Metalloproteinase 9/blood
- Matrix Metalloproteinases, Secreted/deficiency
- Matrix Metalloproteinases, Secreted/genetics
- Matrix Metalloproteinases, Secreted/physiology
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- Myocardial Infarction/blood
- Myocardial Infarction/complications
- Myocardial Infarction/enzymology
- Myocardial Infarction/physiopathology
- Myocytes, Cardiac/enzymology
- Myofibroblasts/metabolism
- Protein-Lysine 6-Oxidase/metabolism
- Pulmonary Edema/enzymology
- Pulmonary Edema/etiology
- Receptors, Cytokine/biosynthesis
- Receptors, Cytokine/genetics
- Transcription, Genetic
- Ventricular Dysfunction, Left/enzymology
- Ventricular Dysfunction, Left/etiology
- Ventricular Remodeling/genetics
- Ventricular Remodeling/physiology
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Affiliation(s)
- Yonggang Ma
- San Antonio Cardiovascular Proteomics Center at San Antonio
- Barshop Institute for Longevity and Aging Studies, and Division of Geriatrics, Gerontology and Palliative Medicine, Department of Medicine, The University of Texas Health Science Center at San Antonio
| | - Ganesh V. Halade
- San Antonio Cardiovascular Proteomics Center at San Antonio
- Barshop Institute for Longevity and Aging Studies, and Division of Geriatrics, Gerontology and Palliative Medicine, Department of Medicine, The University of Texas Health Science Center at San Antonio
| | - Jianhua Zhang
- San Antonio Cardiovascular Proteomics Center at San Antonio
- Barshop Institute for Longevity and Aging Studies, and Division of Geriatrics, Gerontology and Palliative Medicine, Department of Medicine, The University of Texas Health Science Center at San Antonio
| | - Trevi A. Ramirez
- San Antonio Cardiovascular Proteomics Center at San Antonio
- Barshop Institute for Longevity and Aging Studies, and Division of Geriatrics, Gerontology and Palliative Medicine, Department of Medicine, The University of Texas Health Science Center at San Antonio
| | - Daniel Levin
- San Antonio Cardiovascular Proteomics Center at San Antonio
- Barshop Institute for Longevity and Aging Studies, and Division of Geriatrics, Gerontology and Palliative Medicine, Department of Medicine, The University of Texas Health Science Center at San Antonio
| | - Andrew Voorhees
- San Antonio Cardiovascular Proteomics Center at San Antonio
- Department of Mechanical Engineering, The University of Texas at San Antonio
| | - Yu-Fang Jin
- San Antonio Cardiovascular Proteomics Center at San Antonio
- Department of Electrical and Computer Engineering, The University of Texas at San Antonio
| | - Hai-Chao Han
- San Antonio Cardiovascular Proteomics Center at San Antonio
- Department of Mechanical Engineering, The University of Texas at San Antonio
| | - Anne M. Manicone
- Center for Lung Biology and Division of Pulmonary and Critical Care Medicine, University of Washington, Seattle, WA
| | - Merry L. Lindsey
- San Antonio Cardiovascular Proteomics Center at San Antonio
- Barshop Institute for Longevity and Aging Studies, and Division of Geriatrics, Gerontology and Palliative Medicine, Department of Medicine, The University of Texas Health Science Center at San Antonio
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Shantsila E, Tapp LD, Wrigley BJ, Montoro-García S, Lip GYH. CXCR4 positive and angiogenic monocytes in myocardial infarction. Thromb Haemost 2012; 109:255-62. [PMID: 23223950 DOI: 10.1160/th12-06-0395] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2012] [Accepted: 10/22/2012] [Indexed: 11/05/2022]
Abstract
Limited data are available on the role of monocytes in cardiac repair. In the present study, we evaluated the dynamic alterations of monocytes with reparative and angiogenic potential in patients with myocardial infarction(MI). Reparative CXCR4+ monocytes, and CD34+ and KDR+ monocytes with angiogenic potential derived from individual monocyte subsets were quantified by flow cytometry in patients with ST-elevation MI (n=50) and stable coronary artery disease (CAD, n=40). Parameters were measured on days 1, 3, 7 and 30 post MI. Monocyte subsets were defined as CD14++CD16-CCR2+ ('classical', Mon1), CD14++CD16+CCR2+ ('intermediate', Mon2), CD14+CD16++CCR2- ('non-classical', Mon3). Plasma levels of inflammatory cytokines, fibrinolytic factors and microparticles (MPs) were assessed on day 1. CXCR4+ and KDR+ monocytes were increased following MI, being more prominently associated with Mon2 (median[IQR] of CXCR4+ Mon2 60[25-126] per μl in STEMI vs. 27[21-41] per μl in stable CAD). The counts of CXCR4+ Mon2 in STEMI significantly reduced by day 30 of follow-up (27[18-47], p<0.001). Expression of the pro-reparative scavenger receptor CD163 on Mon3 was reduced in acute MI (p=0.008), and on other subsets later during the follow-up with lowest levels at day 3 post-MI (p<0.001 for Mon1, p=0.02 for Mon2). CD204 expression on Mon1 correlated with tissue type plasminogen activator levels (r=0.46, p=0.001). Interleukin(IL)6 levels correlated with counts of Mon2-derived CXCR4+ and KDR+ cells. Interleukin-1β correlated with KDR+ Mon2 counts. IL10 correlated with CXCR4+ Mon2 levels. Low count of CXCR4+ Mon2 and low CD163 expression by Mon2 were associated with higher ejection fraction six-weeks after MI. In conclusion, the Mon2 subset has the most prominent role in the observed changes in reparative monocytes in MI. The association of reparative monocytes with inflammatory/fibrinolytic markers indicates a complex interplay of these cells in the post-MI state.
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Affiliation(s)
- Eduard Shantsila
- University of Birmingham Centre for Cardiovascular Sciences, City Hospital, Birmingham, B18 7QH, UK.
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Ren D, Wang X, Ha T, Liu L, Kalbfleisch J, Gao X, Williams D, Li C. SR-A deficiency reduces myocardial ischemia/reperfusion injury; involvement of increased microRNA-125b expression in macrophages. Biochim Biophys Acta Mol Basis Dis 2012; 1832:336-46. [PMID: 23123599 DOI: 10.1016/j.bbadis.2012.10.012] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2012] [Revised: 10/19/2012] [Accepted: 10/22/2012] [Indexed: 01/04/2023]
Abstract
The macrophage scavenger receptor class A (SR-A) participates in the innate immune and inflammatory responses. This study examined the role of macrophage SR-A in myocardial ischemia/reperfusion (I/R) injury and hypoxia/reoxygenation (H/R)-induced cell damage. SR-A(-/-) and WT mice were subjected to ischemia (45min) followed by reperfusion for up to 7days. SR-A(-/-) mice showed smaller myocardial infarct size and better cardiac function than did WT I/R mice. SR-A deficiency attenuated I/R-induced myocardial apoptosis by preventing p53-mediated Bak-1 apoptotic signaling. The levels of microRNA-125b in SR-A(-/-) heart were significantly greater than in WT myocardium. SR-A is predominantly expressed on macrophages. To investigate the role of SR-A macrophages in H/R-induced injury, we isolated peritoneal macrophages from SR-A deficient (SR-A(-/-)) and wild type (WT) mice. Macrophages were subjected to hypoxia followed by reoxygenation. H/R markedly increased NF-κB binding activity as well as KC and MCP-1 production in WT macrophages but not in SR-A(-/-) macrophages. H/R induced caspase-3/7 and -8 activities and cell death in WT macrophages, but not in SR-A(-/-) macrophages. The levels of miR-125b in SR-A(-/-) macrophages were significantly higher than in WT macrophages. Transfection of WT macrophages with miR-125b mimics attenuated H/R-induced caspase-3/7 and -8 activities and H/R-decreased viability, and prevented H/R-increased p-53, Bak-1 and Bax expression. The data suggest that SR-A deficiency attenuates myocardial I/R injury by targeting p53-mediated apoptotic signaling. SR-A(-/-) macrophages contain high levels of miR-125b which may play a role in the protective effect of SR-A deficiency on myocardial I/R injury and H/R-induced cell damage.
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Affiliation(s)
- Danyang Ren
- Department of Surgery, East Tennessee State University, Johnson City, TN 37614, USA
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Levy-Barazany H, Frenkel D. Expression of scavenger receptor A on antigen presenting cells is important for CD4+ T-cells proliferation in EAE mouse model. J Neuroinflammation 2012; 9:120. [PMID: 22676725 PMCID: PMC3466445 DOI: 10.1186/1742-2094-9-120] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2011] [Accepted: 06/07/2012] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Multiple sclerosis (MS) is an autoimmune disease of the central nervous system (CNS) characterized by damage to the neuronal myelin sheath. One of the key effectors for inflammatory injury is the antigen-presenting cell (APC). The class A scavenger receptor (SRA), constitutively expressed by APCs, such as macrophages and dendritic cells in peripheral tissues and the CNS, was shown to play a role in the phagocytosis of myelin; however, the role of SRA in the development of experimental autoimmune encephalomyelitis (EAE) and autoimmune reaction in the periphery has not yet been studied. METHODS We investigated EAE progression in wild-type (WT) vs. SRA-/- mice using clinical score measurements and characterized CNS pathology using staining. Furthermore, we assessed SRA role in mediating anti myelin pro-inflammatory response in cell cultures. RESULTS We discovered that EAE progression and CNS demyelination were significantly reduced in SRA-/- mice compared to WT mice. In addition, there was a reduction of infiltrating peripheral immune cells, such as T cells and macrophages, in the CNS lesion of SRA-/- mice, which was associated with reduced astrogliosis. Immunological assessment showed that SRA deficiency resulted in significant reduction of pro-inflammatory cytokines that play a major role in EAE progression, such as IL-2, IFN-gamma, IL-17 and IL-6. Furthermore, we discovered that SRA-/- APCs showed impairments in activation and in their ability to induce pro-inflammatory CD4+ T cell proliferation. CONCLUSION Expression of SRA on APCs is important for CD4+ T-cells proliferation in EAE mouse model. Further studies of SRA-mediated cellular pathways in APCs may offer useful insights into the development of MS and other autoimmune diseases, providing future avenues for therapeutic intervention.
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Affiliation(s)
- Hilit Levy-Barazany
- Department of Neurobiology, George S, Wise Faculty of Life Sciences, Sherman Building, Room 424, Tel Aviv 69978, Israel
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46
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Xu Y, Qian L, Zong G, Ma K, Zhu X, Zhang H, Li N, Yang Q, Bai H, Ben J, Li X, Xu Y, Chen Q. Class A scavenger receptor promotes cerebral ischemic injury by pivoting microglia/macrophage polarization. Neuroscience 2012; 218:35-48. [PMID: 22652221 DOI: 10.1016/j.neuroscience.2012.05.036] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2012] [Revised: 05/02/2012] [Accepted: 05/13/2012] [Indexed: 12/21/2022]
Abstract
Class A scavenger receptor (SR-A) is primarily expressed in microglia/macrophages and plays an important role in immune responses. However, whether SR-A can influence microglia/macrophage polarization in cerebral ischemic injury is not known. To this end we monitored the phenotypic alteration of microglia/macrophages in an animal model of cerebral ischemia injury. SR-A was up-regulated in mouse brains 24h after permanent occlusion of middle cerebral artery (MCAO). SR-A-deficient mice displayed reduced infarct size and improved neurological function compared with wild-type mice littermate controls. Furthermore, a decrease in inflammatory F4/80(+)CD11b(+)CD45(high)CD11c(+) microglia/macrophages and attenuated nuclear factor-kappaB (NF-κB) activation was found in ischemic brains in the SR-A null mice. This was accompanied by alleviation of classically activated M1 macrophage markers and preservation of alternatively activated M2 macrophage markers. These data suggest that SR-A contributes to cerebral ischemic injury by pivoting the phenotype of microglia/macrophages to a skewed M1 polarization.
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Affiliation(s)
- Y Xu
- Atherosclerosis Research Center, Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, Nanjing 210029, China
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Gao XM, White DA, Dart AM, Du XJ. Post-infarct cardiac rupture: Recent insights on pathogenesis and therapeutic interventions. Pharmacol Ther 2012; 134:156-79. [DOI: 10.1016/j.pharmthera.2011.12.010] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2011] [Accepted: 12/20/2011] [Indexed: 01/15/2023]
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48
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Khan S, Okamoto T, Enomoto K, Sakashita N, Oyama K, Fujii S, Sawa T, Takeya M, Ogawa H, Yamabe H, Akaike T. Potential association of Helicobacter cinaedi with atrial arrhythmias and atherosclerosis. Microbiol Immunol 2012; 56:145-54. [DOI: 10.1111/j.1348-0421.2012.00421.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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49
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Hofmann U, Bonz A, Frantz S, Hu K, Waller C, Roemer K, Wolf J, Gattenlöhner S, Bauersachs J, Ertl G. A collagen α2(I) mutation impairs healing after experimental myocardial infarction. THE AMERICAN JOURNAL OF PATHOLOGY 2011; 180:113-22. [PMID: 22067913 DOI: 10.1016/j.ajpath.2011.09.033] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2011] [Revised: 09/26/2011] [Accepted: 09/29/2011] [Indexed: 10/15/2022]
Abstract
Collagen breakdown and de novo synthesis are important processes during early wound healing after myocardial infarction (MI). We tested the hypothesis that collagen I, the main constituent of the extracellular matrix, affects wound healing after MI. The osteogenesis imperfecta mouse (OIM), lacking procollagen-α2(I) expression, represents a model of the type III form of the disease in humans. Homozygous (OIM/OIM), heterozygous (OIM/WT), and wild-type (WT/WT) mice were subjected to a permanent myocardial infarction protocol or sham surgery. Baseline functional and geometrical parameters determined by echocardiography did not differ between genotypes. After MI but not after sham surgery, OIM/OIM animals exhibited significantly increased mortality, due to early ventricular rupture between day 3 and 7. Echocardiography at day 1 demonstrated increased left ventricular dilation in OIM/OIM animals. Less collagen I mRNA within the infarct area was found in OIM/OIM animals. At 2 days after MI, MMP-9 expression in the infarct border zone was higher in OIM/OIM than in WT/WT animals. Increased granulocyte infiltration into the infarct border zone occurred in OIM/OIM animals. Neither granulocyte depletion nor MMP inhibition reduced mortality in OIM/OIM animals. In this murine model, deficiency of collagen I leads to a myocardial wound-healing defect. Both structural alterations within pre-existing collagen matrix and impaired collagen de novo expression contribute to a high rate of early myocardial rupture after MI.
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Affiliation(s)
- Ulrich Hofmann
- Department of Internal Medicine I, Comprehensive Heart Failure Center, University Clinic, University of Würzburg, Würzburg, Germany.
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Martínez VG, Moestrup SK, Holmskov U, Mollenhauer J, Lozano F. The conserved scavenger receptor cysteine-rich superfamily in therapy and diagnosis. Pharmacol Rev 2011; 63:967-1000. [PMID: 21880988 DOI: 10.1124/pr.111.004523] [Citation(s) in RCA: 141] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
The scavenger receptor cysteine-rich (SRCR) superfamily of soluble or membrane-bound protein receptors is characterized by the presence of one or several repeats of an ancient and highly conserved protein module, the SRCR domain. This superfamily (SRCR-SF) has been in constant and progressive expansion, now up to more than 30 members. The study of these members is attracting growing interest, which parallels that in innate immunity. No unifying function has been described to date for the SRCR domains, this being the result of the limited knowledge still available on the physiology of most members of the SRCR-SF, but also of the sequence versatility of the SRCR domains. Indeed, involvement of SRCR-SF members in quite different functions, such as pathogen recognition, modulation of the immune response, epithelial homeostasis, stem cell biology, and tumor development, have all been described. This has brought to us new information, unveiling the possibility that targeting or supplementing SRCR-SF proteins could result in diagnostic and/or therapeutic benefit for a number of physiologic and pathologic states. Recent research has provided structural and functional insight into these proteins, facilitating the development of means to modulate the activity of SRCR-SF members. Indeed, some of these approaches are already in use, paving the way for a more comprehensive use of SRCR-SF members in the clinic. The present review will illustrate some available evidence on the potential of well known and new members of the SRCR-SF in this regard.
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Affiliation(s)
- Vanesa Gabriela Martínez
- Center Esther Koplowitz, Institut d'Investigacions Biomèdiques August Pi i Sunyer, Barcelona, Spain
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