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Maksimova A, Shevela E, Sakhno L, Tikhonova M, Ostanin A, Chernykh E. Human Macrophages Polarized by Interaction with Apoptotic Cells Produce Fibrosis-Associated Mediators and Enhance Pro-Fibrotic Activity of Dermal Fibroblasts In Vitro. Cells 2023; 12:1928. [PMID: 37566007 PMCID: PMC10417661 DOI: 10.3390/cells12151928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 07/19/2023] [Accepted: 07/21/2023] [Indexed: 08/12/2023] Open
Abstract
Apoptosis and subsequent removal of dead cells are an essential part of wound healing. Macrophages phagocytize apoptotic cells (efferocytosis) and contribute to the resolution of inflammation. However, their participation in fibrogenesis and the mechanisms of influence on this process remain unclear. In the present study, we focused on the fibrogenic properties of human monocyte-derived macrophages polarized in the M2 direction by interaction with apoptotic cells. We studied their influence on the proliferation ([3H]-thymidine incorporation), differentiation (by the expression of α-SMA, a myofibroblast marker) and collagen-producing activity (ELISA) of dermal fibroblasts compared to classically (LPS) and alternatively (IL-4) activated macrophages. Macrophages polarized by the interaction with apoptotic cells had a unique phenotype and profile of produced factors and differed from the compared macrophage subtypes. Their conditioned media promoted the proliferation of dermal fibroblasts and the expression of α-SMA in them at the level of macrophages stimulated by IL-4, while the stimulating effect on the collagen-producing activity was more pronounced compared to that of the other macrophage subtypes. Moreover, they are characterized by the high level of production of pro-fibrotic factors such as TIMP-1, TGF-β1 and angiogenin. Taken together, M2-like macrophages polarized by efferocytosis demonstrate in vitro pro-fibrotic activity by promoting the functional activity of dermal fibroblasts and producing pro-fibrotic and pro-angiogenic factors.
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Affiliation(s)
- Aleksandra Maksimova
- Research Institute of Fundamental and Clinical Immunology, Novosibirsk 630099, Russia; (E.S.); (L.S.); (M.T.); (A.O.); (E.C.)
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Silberberg E, Filep JG, Ariel A. Weathering the Storm: Harnessing the Resolution of Inflammation to Limit COVID-19 Pathogenesis. Front Immunol 2022; 13:863449. [PMID: 35615359 PMCID: PMC9124752 DOI: 10.3389/fimmu.2022.863449] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 03/22/2022] [Indexed: 12/13/2022] Open
Abstract
The resolution of inflammation is a temporally and spatially coordinated process that in its innate manifestations, primarily involves neutrophils and macrophages. The shutdown of infection or injury-induced acute inflammation requires termination of neutrophil accumulation within the affected sites, neutrophil demise, and clearance by phagocytes (efferocytosis), such as tissue-resident and monocyte-derived macrophages. This must be followed by macrophage reprogramming from the inflammatory to reparative and consequently resolution-promoting phenotypes and the production of resolution-promoting lipid and protein mediators that limit responses in various cell types and promote tissue repair and return to homeostatic architecture and function. Recent studies suggest that these events, and macrophage reprogramming to pro-resolving phenotypes in particular, are not only important in the acute setting, but might be paramount in limiting chronic inflammation, autoimmunity, and various uncontrolled cytokine-driven pathologies. The SARS-CoV-2 (COVID-19) pandemic has caused a worldwide health and economic crisis. Severe COVID-19 cases that lead to high morbidity are tightly associated with an exuberant cytokine storm that seems to trigger shock-like pathologies, leading to vascular and multiorgan failures. In other cases, the cytokine storm can lead to diffuse alveolar damage that results in acute respiratory distress syndrome (ARDS) and lung failure. Here, we address recent advances on effectors in the resolution of inflammation and discuss how pro-resolution mechanisms with particular emphasis on macrophage reprogramming, might be harnessed to limit the universal COVID-19 health threat.
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Affiliation(s)
- Esther Silberberg
- Department of Biology and Human Biology, University of Haifa, Haifa, Israel
| | - János G. Filep
- Department of Pathology and Cell Biology, University of Montreal, Montreal, QC, Canada
- Research Center, Maisonneuve-Rosemont Hospital, Montreal, QC, Canada
- *Correspondence: Amiram Ariel, ; János G. Filep,
| | - Amiram Ariel
- Department of Biology and Human Biology, University of Haifa, Haifa, Israel
- *Correspondence: Amiram Ariel, ; János G. Filep,
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Okyere AD, Tilley DG. Leukocyte-Dependent Regulation of Cardiac Fibrosis. Front Physiol 2020; 11:301. [PMID: 32322219 PMCID: PMC7156539 DOI: 10.3389/fphys.2020.00301] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Accepted: 03/17/2020] [Indexed: 12/24/2022] Open
Abstract
Cardiac fibrosis begins as an intrinsic response to injury or ageing that functions to preserve the tissue from further damage. Fibrosis results from activated cardiac myofibroblasts, which secrete extracellular matrix (ECM) proteins in an effort to replace damaged tissue; however, excessive ECM deposition leads to pathological fibrotic remodeling. At this extent, fibrosis gravely disturbs myocardial compliance, and ultimately leads to adverse outcomes like heart failure with heightened mortality. As such, understanding the complexity behind fibrotic remodeling has been a focal point of cardiac research in recent years. Resident cardiac fibroblasts and activated myofibroblasts have been proven integral to the fibrotic response; however, several findings point to additional cell types that may contribute to the development of pathological fibrosis. For one, leukocytes expand in number after injury and exhibit high plasticity, thus their distinct role(s) in cardiac fibrosis is an ongoing and controversial field of study. This review summarizes current findings, focusing on both direct and indirect leukocyte-mediated mechanisms of fibrosis, which may provide novel targeted strategies against fibrotic remodeling.
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Affiliation(s)
- Ama Dedo Okyere
- Center for Translational Medicine, Lewis Katz School of Medicine, Temple University, Philadelphia, PA, United States
| | - Douglas G Tilley
- Center for Translational Medicine, Lewis Katz School of Medicine, Temple University, Philadelphia, PA, United States
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Haider N, Boscá L, Zandbergen HR, Kovacic JC, Narula N, González-Ramos S, Fernandez-Velasco M, Agrawal S, Paz-García M, Gupta S, DeLeon-Pennell K, Fuster V, Ibañez B, Narula J. Transition of Macrophages to Fibroblast-Like Cells in Healing Myocardial Infarction. J Am Coll Cardiol 2019; 74:3124-3135. [PMID: 31856969 PMCID: PMC7425814 DOI: 10.1016/j.jacc.2019.10.036] [Citation(s) in RCA: 86] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Accepted: 10/06/2019] [Indexed: 02/07/2023]
Abstract
BACKGROUND Macrophages and fibroblasts are 2 major cell types involved in healing after myocardial infarction (MI), contributing to myocardial remodeling and fibrosis. Post-MI fibrosis progression is characterized by a decrease in cardiac macrophage content. OBJECTIVES This study explores the potential of macrophages to express fibroblast genes and the direct role of these cells in post-MI cardiac fibrosis. METHODS Prolonged in vitro culture of human macrophages was used to evaluate the capacity to express fibroblast markers. Infiltrating cardiac macrophages was tracked in vivo after experimental MI of LysM(Cre/+);ROSA26(EYFP/+) transgenic mice. The expression of Yellow Fluorescent Protein (YFP) in these animals is restricted to myeloid lineage allowing the identification of macrophage-derived fibroblasts. The expression in YFP-positive cells of fibroblast markers was determined in myocardial tissue sections of hearts from these mice after MI. RESULTS Expression of the fibroblast markers type I collagen, prolyl-4-hydroxylase, fibroblast specific protein-1, and fibroblast activation protein was evidenced in YFP-positive cells in the heart after MI. The presence of fibroblasts after MI was evaluated in the hearts of animals after depletion of macrophages with clodronate liposomes. This macrophage depletion significantly reduced the number of Mac3+Col1A1+ cells in the heart after MI. CONCLUSIONS The data provide both in vitro and in vivo evidence for the ability of macrophages to transition and adopt a fibroblast-like phenotype. Therapeutic manipulation of this macrophage-fibroblast transition may hold promise for favorably modulating the fibrotic response after MI and after other cardiovascular pathological processes.
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Affiliation(s)
- Nezam Haider
- Zena and Michael A. Wiener Cardiovascular Institute, Icahn School of Medicine at Mount Sinai, New York, New York; Division of Vascular Surgery, University of Arizona, Tucson, Arizona
| | - Lisardo Boscá
- Instituto de Investigaciones Biomédicas Alberto Sols (CSIC-UAM), Arturo Duperier 4, Madrid, Spain; Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares, Melchor Fernández Almagro, Madrid, Spain.
| | - H Reinier Zandbergen
- Department of Cardiothoracic Surgery, Amsterdam University Medical Center, Amsterdam, the Netherlands
| | - Jason C Kovacic
- Zena and Michael A. Wiener Cardiovascular Institute, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Navneet Narula
- Department of Pathology, New York University Langone Medical Center, New York, New York
| | - Silvia González-Ramos
- Instituto de Investigaciones Biomédicas Alberto Sols (CSIC-UAM), Arturo Duperier 4, Madrid, Spain; Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares, Melchor Fernández Almagro, Madrid, Spain
| | - María Fernandez-Velasco
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares, Melchor Fernández Almagro, Madrid, Spain; Instituto de Investigación Biomédica LaPaz, Paseo de la Castellana, Madrid, Spain
| | - Sudhanshu Agrawal
- Division of Basic and Clinical Immunology, University of California, Irvine, California
| | - Marta Paz-García
- Instituto de Investigaciones Biomédicas Alberto Sols (CSIC-UAM), Arturo Duperier 4, Madrid, Spain
| | - Sudhir Gupta
- Division of Basic and Clinical Immunology, University of California, Irvine, California
| | - Kristine DeLeon-Pennell
- Division of Cardiology, Medical University of South Carolina, Ralph H. Johnson Veterans Affairs Medical Center, Charleston, South Carolina
| | - Valentin Fuster
- Zena and Michael A. Wiener Cardiovascular Institute, Icahn School of Medicine at Mount Sinai, New York, New York; Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
| | - Borja Ibañez
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares, Melchor Fernández Almagro, Madrid, Spain; Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain; Instituto de Investigación Sanitaria-Fundación Jiménez Díaz, Madrid, Spain. https://twitter.com/Borjaibanez1
| | - Jagat Narula
- Zena and Michael A. Wiener Cardiovascular Institute, Icahn School of Medicine at Mount Sinai, New York, New York
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