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Chen C, Wang J, Liu C, Hu J. Cardiac resident macrophages: key regulatory mediators in the aftermath of myocardial infarction. Front Immunol 2023; 14:1207100. [PMID: 37457720 PMCID: PMC10348646 DOI: 10.3389/fimmu.2023.1207100] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Accepted: 06/13/2023] [Indexed: 07/18/2023] Open
Abstract
Acute myocardial infarction (MI) is a prevalent and highly fatal global disease. Despite significant reduction in mortality rates with standard treatment regimens, the risk of heart failure (HF) remains high, necessitating innovative approaches to protect cardiac function and prevent HF progression. Cardiac resident macrophages (cMacs) have emerged as key regulators of the pathophysiology following MI. cMacs are a heterogeneous population composed of subsets with different lineage origins and gene expression profiles. Several critical aspects of post-MI pathophysiology have been shown to be regulated by cMacs, including recruitment of peripheral immune cells, clearance and replacement of damaged myocardial cells. Furthermore, cMacs play a crucial role in regulating cardiac fibrosis, risk of arrhythmia, energy metabolism, as well as vascular and lymphatic remodeling. Given the multifaceted roles of cMacs in post-MI pathophysiology, targeting cMacs represents a promising therapeutic strategy. Finally, we discuss novel treatment strategies, including using nanocarriers to deliver drugs to cMacs or using cell therapies to introduce exogenous protective cMacs into the heart.
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Yu Q, Wei P, Xu L, Xia C, Li Y, Liu H, Song X, Tian K, Fu W, Wang R, Wang W, Bai L, Fan J, Liu E, Zhao S. Urotensin II Enhances Advanced Aortic Atherosclerosis Formation and Delays Plaque Regression in Hyperlipidemic Rabbits. Int J Mol Sci 2023; 24:ijms24043819. [PMID: 36835230 PMCID: PMC9963243 DOI: 10.3390/ijms24043819] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 01/30/2023] [Accepted: 02/02/2023] [Indexed: 02/17/2023] Open
Abstract
Accumulated evidence shows that elevated urotensin II (UII) levels are associated with cardiovascular diseases. However, the role of UII in the initiation, progression, and regression of atherosclerosis remains to be verified. Different stages of atherosclerosis were induced in rabbits by a 0.3% high cholesterol diet (HCD) feeding, and either UII (5.4 μg/kg/h) or saline was chronically infused via osmotic mini-pumps. UII promoted atherosclerotic fatty streak formation in ovariectomized female rabbits (34% increase in gross lesion and 93% increase in microscopic lesion), and in male rabbits (39% increase in gross lesion). UII infusion significantly increased the plaque size of the carotid and subclavian arteries (69% increase over the control). In addition, UII infusion significantly enhanced the development of coronary lesions by increasing plaque size and lumen stenosis. Histopathological analysis revealed that aortic lesions in the UII group were characterized by increasing lesional macrophages, lipid deposition, and intra-plaque neovessel formation. UII infusion also significantly delayed the regression of atherosclerosis in rabbits by increasing the intra-plaque macrophage ratio. Furthermore, UII treatment led to a significant increase in NOX2 and HIF-1α/VEGF-A expression accompanied by increased reactive oxygen species levels in cultured macrophages. Tubule formation assays showed that UII exerted a pro-angiogenic effect in cultured endothelial cell lines and this effect was partly inhibited by urantide, a UII receptor antagonist. These findings suggest that UII can accelerate aortic and coronary plaque formation and enhance aortic plaque vulnerability, but delay the regression of atherosclerosis. The role of UII on angiogenesis in the lesion may be involved in complex plaque development.
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Affiliation(s)
- Qingqing Yu
- Institute of Cardiovascular Science, Translational Medicine Institute, Xi’an Jiaotong University Health Science Center, Xi’an 710061, China
- Laboratory Animal Center, Xi’an Jiaotong University, Xi’an 710061, China
| | - Panpan Wei
- Laboratory Animal Center, Xi’an Jiaotong University, Xi’an 710061, China
| | - Liran Xu
- Institute of Cardiovascular Science, Translational Medicine Institute, Xi’an Jiaotong University Health Science Center, Xi’an 710061, China
| | - Congcong Xia
- Laboratory Animal Center, Xi’an Jiaotong University, Xi’an 710061, China
| | - Yafeng Li
- Laboratory Animal Center, Xi’an Jiaotong University, Xi’an 710061, China
| | - Haole Liu
- Institute of Cardiovascular Science, Translational Medicine Institute, Xi’an Jiaotong University Health Science Center, Xi’an 710061, China
| | - Xiaojie Song
- Institute of Cardiovascular Science, Translational Medicine Institute, Xi’an Jiaotong University Health Science Center, Xi’an 710061, China
| | - Kangli Tian
- Institute of Cardiovascular Science, Translational Medicine Institute, Xi’an Jiaotong University Health Science Center, Xi’an 710061, China
| | - Weilai Fu
- Laboratory Animal Center, Xi’an Jiaotong University, Xi’an 710061, China
| | - Rong Wang
- Laboratory Animal Center, Xi’an Jiaotong University, Xi’an 710061, China
| | - Weirong Wang
- Laboratory Animal Center, Xi’an Jiaotong University, Xi’an 710061, China
| | - Liang Bai
- Laboratory Animal Center, Xi’an Jiaotong University, Xi’an 710061, China
| | - Jianglin Fan
- Department of Molecular Pathology, Faculty of Medicine, Graduate School of Medical Sciences, University of Yamanashi, Tokyo 409-3898, Japan
| | - Enqi Liu
- Institute of Cardiovascular Science, Translational Medicine Institute, Xi’an Jiaotong University Health Science Center, Xi’an 710061, China
- Laboratory Animal Center, Xi’an Jiaotong University, Xi’an 710061, China
| | - Sihai Zhao
- Institute of Cardiovascular Science, Translational Medicine Institute, Xi’an Jiaotong University Health Science Center, Xi’an 710061, China
- Department of Cardiology, The Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an 710004, China
- Correspondence: ; Tel.: +86-29-82655361
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Zhang J, Zhou X, Hao H. Macrophage phenotype-switching in cancer. Eur J Pharmacol 2022; 931:175229. [PMID: 36002039 DOI: 10.1016/j.ejphar.2022.175229] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 08/10/2022] [Accepted: 08/17/2022] [Indexed: 12/20/2022]
Abstract
Tumour-associated macrophages (TAMs) have been found to be of great importance in tumorigenesis and in promoting malignant progression, including tumour angiogenesis and metastasis. Moreover, the TAM phenotype is more likely to be an M2 type. Transforming TAMs by M2-polarization into the tumour-suppressive M1-phenotype is an important approach for tumour therapy. In this review, we analysed the effects of the tumour microenvironment on macrophage phenotype-switching, including hypoxia and cytokines, and the mechanisms of drugs targeting TAMs. Furthermore, we analysed the effects of exosomes on macrophage polarization, phenotype switching of macrophages, and the mechanisms of lipid mediators targeting TAMs.
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Affiliation(s)
- Jiamin Zhang
- Department of Pathophysiology, Medical College of Nanchang University, Nanchang, Jiangxi, 330006, PR China
| | - Xiaoyan Zhou
- Department of Pathophysiology, Medical College of Nanchang University, Nanchang, Jiangxi, 330006, PR China.
| | - Hua Hao
- Department of Pathology, Yangpu Hospital, School of Medicine, Tongji University, Shanghai, 200090, PR China.
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Jia D, Chen S, Bai P, Luo C, Liu J, Sun A, Ge J. Cardiac Resident Macrophage-derived Legumain Improves Cardiac Repair via Promoting Clearance and Degradation of Apoptotic Cardiomyocytes after Myocardial Infarction. Circulation 2022; 145:1542-1556. [PMID: 35430895 DOI: 10.1161/circulationaha.121.057549] [Citation(s) in RCA: 71] [Impact Index Per Article: 35.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background: Cardiac resident macrophages are self-maintaining that originate from embryonic hematopoiesis. After myocardial infarction (MI), cardiac resident macrophages are responsible for the efficient clearance and degradation of apoptotic cardiomyocytes (efferocytosis). This process is required for inflammation resolution and tissue repair; however, the underlying molecular mechanisms remain unknown. Therefore, we aimed to identify the mechanisms of the continued clearance and degradation of phagolysosomal cargo by cardiac resident macrophages during MI. Methods: Multiple transgenic mice such us Lgmn-/-, Lgmn F/F; LysMCre, LgmnF/F; Cx3cr1CreER, LgmnF/F; LyveCre, and cardiac macrophage Lgmn overexpression by adenovirus gene transfer were used to determine the functional significance of Lgmn in MI. Immune cell filtration and inflammation were examined by flow cytometry and quantitative real-time polymerase chain reaction (qPCR). Moreover, Lgmn expression was analyzed by immunohistochemistry and qPCR in the cardiac tissues of patients with ischemic cardiomyopathy and healthy controls. Results: We identified legumain (Lgmn) as a gene specifically expressed by cardiac resident macrophages. Lgmn deficiency resulted in a considerable exacerbation in cardiac function, accompanied with the accumulation of apoptotic cardiomyocytes and a reduced index of in vivo efferocytosis in the border area. It also led to decreased cytosolic calcium due to defective intracellular calcium mobilization. Furthermore, the formation of LC3-II-dependent phagosome around secondary-encountered apoptotic cardiomyocytes was disabled. In addition, Lgmn deficiency increased infiltration of MHC-IIhigh CCR2+ macrophages and the enhanced recruitment of MHC-IIlow CCR2+ monocytes with downregulation of anti-inflammatory mediators, IL-10 and TGF-β; and upregulation proinflammatory mediators, IL-1β, TNF-α, IL-6, and IFN-γ. Conclusions: Our results directly link efferocytosis to wound healing in the heart and identify Lgmn as a significant link between acute inflammation resolution and organ function.
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Affiliation(s)
- Daile Jia
- Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai Institute of Cardiovascular Diseases, Shanghai, China; Key Laboratory of Viral Heart Diseases, National Health Commission, Shanghai, China; Key Laboratory of Viral Heart Diseases, Chinese Academy of Medical Sciences, Shanghai, China
| | - Siqin Chen
- Key Laboratory of Viral Heart Diseases, National Health Commission, Shanghai, China; Key Laboratory of Viral Heart Diseases, Chinese Academy of Medical Sciences, Shanghai, China; Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Peiyuan Bai
- Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai Institute of Cardiovascular Diseases, Shanghai, China; Key Laboratory of Viral Heart Diseases, National Health Commission, Shanghai, China; Key Laboratory of Viral Heart Diseases, Chinese Academy of Medical Sciences, Shanghai, China
| | - Chentao Luo
- Department of Cardiovascular Surgery, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, Zhejiang, China
| | - Jin Liu
- Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai Institute of Cardiovascular Diseases, Shanghai, China; Key Laboratory of Viral Heart Diseases, National Health Commission, Shanghai, China; Key Laboratory of Viral Heart Diseases, Chinese Academy of Medical Sciences, Shanghai, China
| | - Aijun Sun
- Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai Institute of Cardiovascular Diseases, Shanghai, China; Key Laboratory of Viral Heart Diseases, National Health Commission, Shanghai, China; Key Laboratory of Viral Heart Diseases, Chinese Academy of Medical Sciences, Shanghai, China; Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Junbo Ge
- Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai Institute of Cardiovascular Diseases, Shanghai, China; Key Laboratory of Viral Heart Diseases, National Health Commission, Shanghai, China; Key Laboratory of Viral Heart Diseases, Chinese Academy of Medical Sciences, Shanghai, China; Institutes of Biomedical Sciences, Fudan University, Shanghai, China
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Hua J, Wu P, Gan L, Zhang Z, He J, Zhong L, Zhao Y, Huang Y. Current Strategies for Tumor Photodynamic Therapy Combined With Immunotherapy. Front Oncol 2021; 11:738323. [PMID: 34868932 PMCID: PMC8635494 DOI: 10.3389/fonc.2021.738323] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Accepted: 10/27/2021] [Indexed: 12/30/2022] Open
Abstract
Photodynamic therapy (PDT) is a low invasive antitumor therapy with fewer side effects. On the other hand, immunotherapy also has significant clinical applications in the treatment of cancer. Both therapies, on their own, have some limitations and are incapable of meeting the demands of the current cancer treatment. The efficacy of PDT and immunotherapy against tumor metastasis and tumor recurrence may be improved by combination strategies. In this review, we discussed the possibility that PDT could be used to activate immune responses by inducing immunogenic cell death or generating cancer vaccines. Furthermore, we explored the latest advances in PDT antitumor therapy in combination with some immunotherapy such as immune adjuvants, inhibitors of immune suppression, and immune checkpoint blockade.
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Affiliation(s)
- Jianfeng Hua
- National Center for International Research of Bio-targeting Theranostics, Guangxi Key Laboratory of Bio-targeting Theranostics, Collaborative Innovation Center for Targeting Tumor Diagnosis and Therapy, Guangxi Talent Highland of Bio-targeting Theranostics, Guangxi Medical University, Nanning, China
| | - Pan Wu
- National Center for International Research of Bio-targeting Theranostics, Guangxi Key Laboratory of Bio-targeting Theranostics, Collaborative Innovation Center for Targeting Tumor Diagnosis and Therapy, Guangxi Talent Highland of Bio-targeting Theranostics, Guangxi Medical University, Nanning, China
| | - Lu Gan
- National Center for International Research of Bio-targeting Theranostics, Guangxi Key Laboratory of Bio-targeting Theranostics, Collaborative Innovation Center for Targeting Tumor Diagnosis and Therapy, Guangxi Talent Highland of Bio-targeting Theranostics, Guangxi Medical University, Nanning, China
| | - Zhikun Zhang
- National Center for International Research of Bio-targeting Theranostics, Guangxi Key Laboratory of Bio-targeting Theranostics, Collaborative Innovation Center for Targeting Tumor Diagnosis and Therapy, Guangxi Talent Highland of Bio-targeting Theranostics, Guangxi Medical University, Nanning, China
| | - Jian He
- National Center for International Research of Bio-targeting Theranostics, Guangxi Key Laboratory of Bio-targeting Theranostics, Collaborative Innovation Center for Targeting Tumor Diagnosis and Therapy, Guangxi Talent Highland of Bio-targeting Theranostics, Guangxi Medical University, Nanning, China
| | - Liping Zhong
- National Center for International Research of Bio-targeting Theranostics, Guangxi Key Laboratory of Bio-targeting Theranostics, Collaborative Innovation Center for Targeting Tumor Diagnosis and Therapy, Guangxi Talent Highland of Bio-targeting Theranostics, Guangxi Medical University, Nanning, China
| | - Yongxiang Zhao
- National Center for International Research of Bio-targeting Theranostics, Guangxi Key Laboratory of Bio-targeting Theranostics, Collaborative Innovation Center for Targeting Tumor Diagnosis and Therapy, Guangxi Talent Highland of Bio-targeting Theranostics, Guangxi Medical University, Nanning, China
| | - Yong Huang
- National Center for International Research of Bio-targeting Theranostics, Guangxi Key Laboratory of Bio-targeting Theranostics, Collaborative Innovation Center for Targeting Tumor Diagnosis and Therapy, Guangxi Talent Highland of Bio-targeting Theranostics, Guangxi Medical University, Nanning, China
- The First People’s Hospital of Changde City, Changde, China
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Becker AC, Lantz CW, Forbess JM, Epting CL, Thorp EB. Cardiopulmonary Bypass-Induced Inflammation and Myocardial Ischemia and Reperfusion Injury Stimulates Accumulation of Soluble MER. Pediatr Crit Care Med 2021; 22:822-831. [PMID: 33813548 PMCID: PMC8805604 DOI: 10.1097/pcc.0000000000002725] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVES Soluble MER has emerged as a potential biomarker for delayed resolution of inflammation after myocardial injury and a therapeutic target to reduce cardiac-related morbidity and mortality in adults. The significance of soluble MER in pediatric populations, however, is unclear. We sought to investigate if soluble MER concentrations change in response to myocardial ischemia and reperfusion injury in pediatric patients. In parallel, we also sought to investigate for correlations between the change in soluble MER concentration and specific patient, bypass, and postoperative data. DESIGN We quantified the change in plasma soluble MER concentration post- compared with precardiopulmonary bypass for each patient in a cohort of pediatric patients. Linear regression, correlation coefficients, and t tests were used to compare innate patient characteristics (i.e., sex, age, cyanotic vs acyanotic cardiac lesion), cardiac bypass data (i.e., total cardiac bypass time, total aortic cross-clamp time, perioperative steroid administration), and postcardiac bypass data (total postoperative ventilator days, total postoperative vasoactive medication days, and total postoperative ICU days) with change in soluble MER concentrations. SETTING Whole blood samples were obtained intraoperatively at a single tertiary care children's hospital from April to October 2019. SUBJECTS Our patient cohort included 24 pediatric patients ages ranging from birth to 19 years old with both cyanotic and acyanotic cardiac lesions. INTERVENTIONS Retrospective analyses of pediatric blood specimens, as well as patient, bypass, and postoperative data, were performed. MEASUREMENTS AND MAIN RESULTS We observed a statistically significant increase in soluble MER concentration post cardiac bypass in 17 of 24 patients (71%). CONCLUSIONS Soluble MER concentrations increase with cardiopulmonary bypass-induced inflammation and myocardial ischemia and reperfusion injury in pediatric patients. The utility of soluble MER as a clinical biomarker to identify pediatric patients at risk for exacerbated postoperative outcomes after bypass-induced myocardial ischemia and reperfusion injury requires further investigation.
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Affiliation(s)
- Amanda C Becker
- Division of Critical Care Medicine, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL
- Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL
| | - Connor W Lantz
- Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, IL
| | - Joseph M Forbess
- Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL
- Department of Surgery (Cardiac Surgery), Northwestern University Feinberg School of Medicine, Chicago, IL
- Division of Cardiovascular-Thoracic Surgery, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL
| | - Conrad L Epting
- Division of Critical Care Medicine, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL
- Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL
| | - Edward B Thorp
- Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, IL
- Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, IL
- The Heart Center at Stanley Manne Children's Research Institute, Chicago, IL
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7
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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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Mora-Ruíz MD, Blanco-Favela F, Chávez Rueda AK, Legorreta-Haquet MV, Chávez-Sánchez L. Role of interleukin-17 in acute myocardial infarction. Mol Immunol 2019; 107:71-78. [DOI: 10.1016/j.molimm.2019.01.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 01/08/2019] [Accepted: 01/11/2019] [Indexed: 12/12/2022]
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9
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Zhu C, Kros JM, Cheng C, Mustafa D. The contribution of tumor-associated macrophages in glioma neo-angiogenesis and implications for anti-angiogenic strategies. Neuro Oncol 2018; 19:1435-1446. [PMID: 28575312 DOI: 10.1093/neuonc/nox081] [Citation(s) in RCA: 111] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
"Tumor-associated macrophages" (TAMs) form a significant cell population in malignant tumors and contribute to tumor growth, metastasis, and neovascularization. Gliomas are characterized by extensive neo-angiogenesis, and knowledge of the role of TAMs in neovascularization is important for future anti-angiogenic therapies. The phenotypes and functions of TAMs are heterogeneous and more complex than a classification into M1 and M2 inflammation response types would suggest. In this review, we provide an update on the current knowledge of the ontogeny of TAMs, focusing on diffuse gliomas. The role of TAMs in the regulation of the different processes in tumor angiogenesis is highlighted and the most recently discovered mechanisms by which TAMs mediate resistance against current antivascular therapies are mentioned. Novel compounds tested in clinical trials are discussed and brought in relation to different TAM-related angiogenesis pathways. In addition, potential therapeutic targets used to intervene in TAM-regulated tumor angiogenesis are summarized.
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Affiliation(s)
- Changbin Zhu
- Department of Pathology, Division of Experimental Cardiology, Department of Cardiology, Thoraxcenter, Erasmus Medical Center, Rotterdam, Netherlands; Department of Nephrology and Hypertension, DIGD, University Medical Center Utrecht, Utrecht, Netherlands
| | - Johan M Kros
- Department of Pathology, Division of Experimental Cardiology, Department of Cardiology, Thoraxcenter, Erasmus Medical Center, Rotterdam, Netherlands; Department of Nephrology and Hypertension, DIGD, University Medical Center Utrecht, Utrecht, Netherlands
| | - Caroline Cheng
- Department of Pathology, Division of Experimental Cardiology, Department of Cardiology, Thoraxcenter, Erasmus Medical Center, Rotterdam, Netherlands; Department of Nephrology and Hypertension, DIGD, University Medical Center Utrecht, Utrecht, Netherlands
| | - Dana Mustafa
- Department of Pathology, Division of Experimental Cardiology, Department of Cardiology, Thoraxcenter, Erasmus Medical Center, Rotterdam, Netherlands; Department of Nephrology and Hypertension, DIGD, University Medical Center Utrecht, Utrecht, Netherlands
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Dehn S, DeBerge M, Yeap XY, Yvan-Charvet L, Fang D, Eltzschig HK, Miller SD, Thorp EB. HIF-2α in Resting Macrophages Tempers Mitochondrial Reactive Oxygen Species To Selectively Repress MARCO-Dependent Phagocytosis. THE JOURNAL OF IMMUNOLOGY 2016; 197:3639-3649. [PMID: 27671111 DOI: 10.4049/jimmunol.1600402] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2016] [Accepted: 08/24/2016] [Indexed: 12/22/2022]
Abstract
Hypoxia-inducible factor (HIF)-α isoforms regulate key macrophage (MΦ) functions during ischemic inflammation. HIF-2α drives proinflammatory cytokine production; however, the requirements for HIF-2α during other key MΦ functions, including phagocytosis, are unknown. In contrast to HIF-1α, HIF-2α was not required for hypoxic phagocytic uptake. Surprisingly, basal HIF-2α levels under nonhypoxic conditions were necessary and sufficient to suppress phagocytosis. Screening approaches revealed selective induction of the scavenger receptor MARCO, which was required for enhanced engulfment. Chromatin immunoprecipitation identified the antioxidant NRF2 as being directly responsible for inducing Marco Concordantly, Hif-2α-/- MΦs exhibited reduced antioxidant gene expression, and inhibition of mitochondrial reactive oxygen species suppressed Marco expression and phagocytic uptake. Ex vivo findings were recapitulated in vivo; the enhanced engulfment phenotype resulted in increased bacterial clearance and cytokine suppression. Importantly, natural induction of Hif-2α by IL-4 also suppressed MARCO-dependent phagocytosis. Thus, unlike most characterized prophagocytic regulators, HIF-2α can act as a phagocytic repressor. Interestingly, this occurs in resting MΦs through tempering of steady-state mitochondrial reactive oxygen species. In turn, HIF-2α promotes MΦ quiescence by blocking a MARCO bacterial-response pathway. IL-4 also drives HIF-2α suppression of MARCO, leading to compromised bacterial immunosurveillance in vivo.
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Affiliation(s)
- Shirley Dehn
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611.,Feinberg Cardiovascular Research Institute, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611
| | - Matthew DeBerge
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611.,Feinberg Cardiovascular Research Institute, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611
| | - Xin-Yi Yeap
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611.,Feinberg Cardiovascular Research Institute, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611
| | - Laurent Yvan-Charvet
- INSERM U1065, Centre Mediterraneen de Medecine Moleculaire, Atip-Avenir, 06204 Nice, France
| | - Deyu Fang
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611
| | - Holger K Eltzschig
- Department of Anesthesiology, University of Colorado, Aurora, CO 80045; and
| | - Stephen D Miller
- Department of Microbiology-Immunology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611
| | - Edward B Thorp
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611; .,Feinberg Cardiovascular Research Institute, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611
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Zhang S, Yeap XY, Grigoryeva L, Dehn S, DeBerge M, Tye M, Rostlund E, Schrijvers D, Zhang ZJ, Sumagin R, Tourtellotte WG, Lee D, Lomasney J, Morrow J, Thorp EB. Cardiomyocytes induce macrophage receptor shedding to suppress phagocytosis. J Mol Cell Cardiol 2015; 87:171-9. [PMID: 26316303 DOI: 10.1016/j.yjmcc.2015.08.009] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2015] [Revised: 07/29/2015] [Accepted: 08/10/2015] [Indexed: 12/24/2022]
Abstract
BACKGROUND Mobilization of the innate immune response to clear and metabolize necrotic and apoptotic cardiomyocytes is a prerequisite to heart repair after cardiac injury. Suboptimal kinetics of dying myocyte clearance leads to secondary necrosis, and in the case of the heart, increased potential for collateral loss of neighboring non-regenerative myocytes. Despite the importance of myocyte phagocytic clearance during heart repair, surprisingly little is known about its underlying cell and molecular biology. OBJECTIVE To determine if phagocytic receptor MERTK is expressed in human hearts and to elucidate key sequential steps and phagocytosis efficiency of dying adult cardiomyocytes, by macrophages. RESULTS In infarcted human hearts, expression profiles of the phagocytic receptor MER-tyrosine kinase (MERTK) mimicked that found in experimental ischemic mouse hearts. Electron micrographs of myocardium identified MERTK signal along macrophage phagocytic cups and Mertk-/- macrophages contained reduced digested myocyte debris after myocardial infarction. Ex vivo co-culture of primary macrophages and adult cardiomyocyte apoptotic bodies revealed reduced engulfment relative to resident cardiac fibroblasts. Inefficient clearance was not due to the larger size of myocyte apoptotic bodies, nor were other key steps preceding the formation of phagocytic synapses significantly affected; this included macrophage chemotaxis and direct binding of phagocytes to myocytes. Instead, suppressed phagocytosis was directly associated with myocyte-induced inactivation of MERTK, which was partially rescued by genetic deletion of a MERTK proteolytic susceptibility site. CONCLUSION Utilizing an ex vivo co-cultivation approach to model key cellular and molecular events found in vivo during infarction, cardiomyocyte phagocytosis was found to be inefficient, in part due to myocyte-induced shedding of macrophage MERTK. These findings warrant future studies to identify other cofactors of macrophage-cardiomyocyte cross-talk that contribute to cardiac pathophysiology.
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Affiliation(s)
- Shuang Zhang
- Feinberg Cardiovascular Research Institute, Northwestern University, Chicago, IL, USA; Surgery-Organ Transplantation, Northwestern University, Chicago, IL, USA
| | - Xin-Yi Yeap
- Feinberg Cardiovascular Research Institute, Northwestern University, Chicago, IL, USA; Surgery-Organ Transplantation, Northwestern University, Chicago, IL, USA
| | - Lubov Grigoryeva
- Feinberg Cardiovascular Research Institute, Northwestern University, Chicago, IL, USA; Surgery-Organ Transplantation, Northwestern University, Chicago, IL, USA
| | - Shirley Dehn
- Feinberg Cardiovascular Research Institute, Northwestern University, Chicago, IL, USA; Surgery-Organ Transplantation, Northwestern University, Chicago, IL, USA
| | - Matthew DeBerge
- Feinberg Cardiovascular Research Institute, Northwestern University, Chicago, IL, USA; Surgery-Organ Transplantation, Northwestern University, Chicago, IL, USA
| | - Michael Tye
- Feinberg Cardiovascular Research Institute, Northwestern University, Chicago, IL, USA; Surgery-Organ Transplantation, Northwestern University, Chicago, IL, USA
| | - Emily Rostlund
- Feinberg Cardiovascular Research Institute, Northwestern University, Chicago, IL, USA; Surgery-Organ Transplantation, Northwestern University, Chicago, IL, USA
| | | | | | - Ronen Sumagin
- Feinberg Cardiovascular Research Institute, Northwestern University, Chicago, IL, USA
| | - Warren G Tourtellotte
- Feinberg Cardiovascular Research Institute, Northwestern University, Chicago, IL, USA; Surgery-Organ Transplantation, Northwestern University, Chicago, IL, USA
| | - Daniel Lee
- Feinberg Cardiovascular Research Institute, Northwestern University, Chicago, IL, USA
| | - Jon Lomasney
- Feinberg Cardiovascular Research Institute, Northwestern University, Chicago, IL, USA; Surgery-Organ Transplantation, Northwestern University, Chicago, IL, USA
| | - John Morrow
- Department of Cardiology and Division of Molecular Medicine, Columbia University, New York, NY, USA
| | - Edward B Thorp
- Feinberg Cardiovascular Research Institute, Northwestern University, Chicago, IL, USA; Surgery-Organ Transplantation, Northwestern University, Chicago, IL, USA.
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Kain V, Ingle KA, Colas RA, Dalli J, Prabhu SD, Serhan CN, Joshi M, Halade GV. Resolvin D1 activates the inflammation resolving response at splenic and ventricular site following myocardial infarction leading to improved ventricular function. J Mol Cell Cardiol 2015; 84:24-35. [PMID: 25870158 DOI: 10.1016/j.yjmcc.2015.04.003] [Citation(s) in RCA: 180] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/17/2015] [Revised: 03/16/2015] [Accepted: 04/02/2015] [Indexed: 12/31/2022]
Abstract
Unresolved inflammation is a major contributor to the development of heart failure following myocardial infarction (MI). Pro-resolving lipid mediators, such as resolvins (e.g. RvD1), are biosynthesized endogenously. The role of RvD1 in resolving post-MI inflammation has not been elucidated due to its unstable nature. Here, we have tested the role for two forms of RvD1, after incorporation into liposomes (Lipo-RvD1) and its free acid form (RvD1) in the left ventricle (LV) and splenic remodeling post-MI. 8 to 12-week old male, C57BL/6J-mice were subjected to coronary artery ligation and Lipo-RvD1 or RvD1 (3 μg/kg/day) was injected 3h post-MI for day (d)1 or until d5. No-MI mice and saline-injected MI mice served as controls. RvD1 injected groups showed improved fractional shortening post-MI; preserving transient changes in the splenic reservoir compared to MI-saline. RvD1-groups showed an early exit of neutrophils from LV and spleen at d5 post-MI with an increased expression of lipoxin A4 receptor (ALX; synonym formyl peptide receptor; FPR2) compared to the MI-saline group. The levels of pro-resolving mediators RvD1, RvD2, Maresin 1 (MaR1) and Lipoxin A4 (LXA4) were increased in spleens from RvD1 injected mice at d5 post-MI. RvD1 administration reduced macrophage density, ccr5 and cxcl5 levels at d5 post-MI compared to saline injected mice (both, p < 0.05). Increased transcripts of mrc-1, arg-1 and Ym-1 (all, p < 0.05) suggest macrophage-mediated clearance of necrotic cells in RvD1-groups. RvD1 reduced the pro-fibrotic genes (colla1, coll2a1 and tnc (all; p < 0.05)) and decreased collagen deposition, thereby reducing post-MI fibrosis and thus stabilizing the extracellular matrix. In summary, RvD1 and Lipo-RvD1 promote the resolution of acute inflammation initiated by MI, thereby delaying the onset of heart failure.
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Affiliation(s)
- Vasundhara Kain
- Division of Cardiovascular Disease, Department of Medicine, The University of Alabama at Birmingham, AL, USA
| | - Kevin A Ingle
- Division of Cardiovascular Disease, Department of Medicine, The University of Alabama at Birmingham, AL, USA
| | - Romain A Colas
- Center for Experimental Therapeutics and Reperfusion Injury, Brigham and Women's Hospital, Department of Anesthesiology, Perioperative and Pain Medicine, Boston, MA USA
| | - Jesmond Dalli
- Center for Experimental Therapeutics and Reperfusion Injury, Brigham and Women's Hospital, Department of Anesthesiology, Perioperative and Pain Medicine, Boston, MA USA
| | - Sumanth D Prabhu
- Division of Cardiovascular Disease, Department of Medicine, The University of Alabama at Birmingham, AL, USA
| | - Charles N Serhan
- Center for Experimental Therapeutics and Reperfusion Injury, Brigham and Women's Hospital, Department of Anesthesiology, Perioperative and Pain Medicine, Boston, MA USA
| | - Medha Joshi
- Chicago College of Pharmacy, Department of Pharmaceutical Sciences, Midwestern University, IL, USA
| | - Ganesh V Halade
- Division of Cardiovascular Disease, Department of Medicine, The University of Alabama at Birmingham, AL, USA.
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