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Gutbier B, Jiang X, Dietert K, Ehrler C, Lienau J, Van Slyke P, Kim H, Hoang VC, Maynes JT, Dumont DJ, Gruber AD, Weissmann N, Mitchell TJ, Suttorp N, Witzenrath M. Vasculotide reduces pulmonary hyperpermeability in experimental pneumococcal pneumonia. Crit Care 2017; 21:274. [PMID: 29132435 PMCID: PMC5683375 DOI: 10.1186/s13054-017-1851-6] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Accepted: 09/28/2017] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND Community-acquired pneumonia (CAP) is a significant cause of morbidity and mortality worldwide. Despite effective antimicrobial therapy, CAP can induce pulmonary endothelial hyperpermeability resulting in life-threatening lung failure due to an exaggerated host-pathogen interaction. Treatment of acute lung injury is mainly supportive because key elements of inflammation-induced barrier disruption remain undetermined. Angiopoietin-1 (Ang-1)-mediated Tie2 activation reduces, and the Ang-1 antagonist Ang-2 increases, inflammation and endothelial permeability in sepsis. Vasculotide (VT) is a polyethylene glycol-clustered Tie2-binding peptide that mimics the actions of Ang-1. The aim of our study was to experimentally test whether VT is capable of diminishing pneumonia-induced lung injury. METHODS VT binding and phosphorylation of Tie2 were analyzed using tryptophan fluorescence spectroscopy and phospho-Tie-2 enzyme-linked immunosorbent assay. Human and murine lung endothelial cells were investigated by immunofluorescence staining and electric cell-substrate impedance sensing. Pulmonary hyperpermeability was quantified in VT-pretreated, isolated, perfused, and ventilated mouse lungs stimulated with the pneumococcal exotoxin pneumolysin (PLY). Furthermore, Streptococcus pneumoniae-infected mice were therapeutically treated with VT. RESULTS VT showed dose-dependent binding and phosphorylation of Tie2. Pretreatment with VT protected lung endothelial cell monolayers from PLY-induced disruption. In isolated mouse lungs, VT decreased PLY-induced pulmonary permeability. Likewise, therapeutic treatment with VT of S. pneumoniae-infected mice significantly reduced pneumonia-induced hyperpermeability. However, effects by VT on the pulmonary or systemic inflammatory response were not observed. CONCLUSIONS VT promoted pulmonary endothelial stability and reduced lung permeability in different models of pneumococcal pneumonia. Thus, VT may provide a novel therapeutic perspective for reduction of permeability in pneumococcal pneumonia-induced lung injury.
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Affiliation(s)
- Birgitt Gutbier
- Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Department of Infectious Diseases and Pulmonary Medicine, Charitéplatz 1, 10117 Berlin, Germany
| | - Xiaohui Jiang
- Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Department of Infectious Diseases and Pulmonary Medicine, Charitéplatz 1, 10117 Berlin, Germany
| | - Kristina Dietert
- Institute of Veterinary Pathology, Freie Universität Berlin, Robert-von-Ostertag-Strasse 15, 14163 Berlin, Germany
| | - Carolin Ehrler
- Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Department of Infectious Diseases and Pulmonary Medicine, Charitéplatz 1, 10117 Berlin, Germany
| | - Jasmin Lienau
- Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Department of Infectious Diseases and Pulmonary Medicine, Charitéplatz 1, 10117 Berlin, Germany
| | - Paul Van Slyke
- Vasomune Therapeutics, 661 University Avenue, Suite 465, Toronto, ON M5G 1M1 Canada
| | - Harold Kim
- Vasomune Therapeutics, 661 University Avenue, Suite 465, Toronto, ON M5G 1M1 Canada
| | - Van C. Hoang
- Vasomune Therapeutics, 661 University Avenue, Suite 465, Toronto, ON M5G 1M1 Canada
| | - Jason T. Maynes
- Department of Anesthesia and Pain Medicine, Hospital for Sick Children, Toronto, ON M5G 1X8 Canada
- Departments of Anesthesia and Biochemistry, University of Toronto, Toronto, ON M5S 2J7 Canada
| | - Daniel J. Dumont
- Sunnybrook Research Institute, Sunnybrook Health Sciences Centre, 2075 Bayview Avenue, Toronto, ON M4N 3M5 Canada
| | - Achim D. Gruber
- Institute of Veterinary Pathology, Freie Universität Berlin, Robert-von-Ostertag-Strasse 15, 14163 Berlin, Germany
| | - Norbert Weissmann
- Excellence Cluster Cardio-Pulmonary System, University of Giessen and Marburg Lung Center (UGMLC), German Center for Lung Research (DZL), Justus-Liebig-University, Giessen, 35392 Germany
| | - Timothy J. Mitchell
- Institute of Microbiology and Infection, College of Medical and Dental Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT UK
| | - Norbert Suttorp
- Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Department of Infectious Diseases and Pulmonary Medicine, Charitéplatz 1, 10117 Berlin, Germany
| | - Martin Witzenrath
- Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Department of Infectious Diseases and Pulmonary Medicine, Charitéplatz 1, 10117 Berlin, Germany
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Wang X, Zhu Q, Lin Y, Wu L, Wu X, Wang K, He Q, Xu C, Wan X, Wang X. Crosstalk between TEMs and endothelial cells modulates angiogenesis and metastasis via IGF1-IGF1R signalling in epithelial ovarian cancer. Br J Cancer 2017; 117:1371-1382. [PMID: 28898232 PMCID: PMC5672923 DOI: 10.1038/bjc.2017.297] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Revised: 08/03/2017] [Accepted: 08/04/2017] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Epithelial ovarian cancer (EOC) is the leading cause of death from gynaecologic malignancies and has a poor prognosis due to metastasis. Drugs targeting the angiogenesis pathway significantly improve patient outcome. However, the key factors linking angiogenesis and metastasis have not been elucidated. In this study, we found Tie2 expressing monocytes (CD14+Tie2+, TEMs) as key contributors to angiogenesis and metastasis of EOC. METHODS Tissue slides were evaluated by immunofluorescence for the presence of total tissue macrophages and TEMs. The correlation between microvascular density (MVD) values and the TEMs number or ratio was calculated in both ovarian cancer tissues and peritoneum. The rate of TEMs in monocytes was evaluated in the peripheral blood of female healthy donors, benign cysts patients, and EOC patients using flow cytometry. The TEMs rate in ascites from EOC patients was also evaluated by flow cytometry. The concentration of Ang2, as the ligand of Tie2, was examined by ELISA in serum samples of EOC patients, benign cysts patients, and ascites samples of EOC patients. The effects of Ang2 on the migration and the cytokine expression of TEMs were further examined. The pro- angiogenesis activity of TEMs via IGF1 was performed in both in vivo and in vitro. And the IGF1 blocking test was performed using neutralising antibody. RESULTS TEMs were significantly higher in tumour foci, peripheral blood and ascites in EOC patients. The proportion of TEMs among total tissue macrophages was positively correlated with tumour MVD. In vivo animal results showed that TEMs promoted EOC angiogenesis and metastasis. Further functional and mechanisms studies revealed that concentration of angiopoietin 2 (Ang2), a ligand of Tie2, was elevated in EOC ascites which further recruit TEMs in a dose-dependent manner as a powerful chemokine to TEMs. Recruited TEMs promoted endothelial cell function through IGF1-activated downstream signalling. Blocking secreted IGF1 using inhibiting antibody reduced TEMs mediated angiogenesis and metastasis. CONCLUSIONS TEMs significantly increased in EOC patients and were recruited to tumour loci by the increased Ang2. The increased TEMs have diagnostic value in ovarian cancer and were positively correlated with the MVD in ovarian cancer tissue. Furthermore, TEMs promote angiogenesis via IGF1 in both in vivo and in vitro experimental systems after stimulation by Ang2. Altogether, this study paves the way to develop novel therapy targets as the axis of Ang2-TEMs-IGF1 in EOC.
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Affiliation(s)
- Xinjing Wang
- Department of Gynecology and Obstetrics, XinHua Hospital, Shanghai JiaoTong University School of Medicine, Shanghai 200092, China
| | - Qinyi Zhu
- Department of Gynecology and Obstetrics, XinHua Hospital, Shanghai JiaoTong University School of Medicine, Shanghai 200092, China
| | - Yingying Lin
- Department of Neurosurgery, Ren Ji Hospital, School of Medicine, Shanghai JiaoTong University, Shanghai 200127, China
| | - Li Wu
- Department of Gynecology, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai 200126, China
| | - Xiaoli Wu
- Department of Gynecology and Obstetrics, XinHua Hospital, Shanghai JiaoTong University School of Medicine, Shanghai 200092, China
| | - Kai Wang
- Central Laboratory, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai 200126, China
| | - Qizhi He
- Department of Pathology, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai 200126, China
| | - Congjian Xu
- Department of Gynecology, Obstetrics and Gynecology Hospital of Fudan University, Shanghai 200011, China
| | - Xiaoping Wan
- Department of Gynecology, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai 200126, China
| | - Xipeng Wang
- Department of Gynecology and Obstetrics, XinHua Hospital, Shanghai JiaoTong University School of Medicine, Shanghai 200092, China
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53
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Duan J, Hu H, Feng L, Yang X, Sun Z. Silica nanoparticles inhibit macrophage activity and angiogenesis via VEGFR2-mediated MAPK signaling pathway in zebrafish embryos. CHEMOSPHERE 2017; 183:483-490. [PMID: 28570891 DOI: 10.1016/j.chemosphere.2017.05.138] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Revised: 05/16/2017] [Accepted: 05/23/2017] [Indexed: 06/07/2023]
Abstract
The safety evaluation of silica nanoparticles (SiNPs) are getting great attention due to its widely-used in food sciences, chemical industry and biomedicine. However, the adverse effect and underlying mechanisms of SiNPs on cardiovascular system, especially on angiogenesis is still unclear. This study was aimed to illuminate the possible mechanisms of SiNPs on angiogenesis in zebrafish transgenic lines, Tg(fli-1:EGFP) and Albino. SiNPs caused the cardiovascular malformations in a dose-dependent manner via intravenous microinjection. The incidences of cardiovascular malformations were observed as: Pericardial edema > Bradycardia > Blood deficiency. The area of subintestinal vessels (SIVs) was significant reduced in SiNPs-treated groups, accompanied with the weaken expression of vascular endothelial cells in zebrafish embryos. Using neutral red staining, the quantitative number of macrophage was declined; whereas macrophage inhibition rate was elevated in a dose-dependent way. Furthermore, SiNPs significantly decreased the mRNA expression of macrophage activity related gene, macrophage migration inhibitory factor (MIF) and the angiogenesis related gene, vascular endothelial growth factor receptor 2 (VEGFR2). The protein levels of p-Erk1/2 and p-p38 MAPK were markedly decreased in zebrafish exposed to SiNPs. Our results implicate that SiNPs inhibited the macrophage activity and angiogenesis via the downregulation of MAPK singaling pathway.
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Affiliation(s)
- Junchao Duan
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, Beijing, PR China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, PR China.
| | - Hejing Hu
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, Beijing, PR China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, PR China
| | - Lin Feng
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, Beijing, PR China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, PR China
| | - Xiaozhe Yang
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, Beijing, PR China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, PR China
| | - Zhiwei Sun
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, Beijing, PR China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, PR China
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54
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Ma B, Whiteford JR, Nourshargh S, Woodfin A. Underlying chronic inflammation alters the profile and mechanisms of acute neutrophil recruitment. J Pathol 2017; 240:291-303. [PMID: 27477524 PMCID: PMC5082550 DOI: 10.1002/path.4776] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Revised: 07/13/2016] [Accepted: 07/20/2016] [Indexed: 01/15/2023]
Abstract
Chronically inflamed tissues show altered characteristics that include persistent populations of inflammatory leukocytes and remodelling of the vascular network. As the majority of studies on leukocyte recruitment have been carried out in normal healthy tissues, the impact of underlying chronic inflammation on ongoing leukocyte recruitment is largely unknown. Here, we investigate the profile and mechanisms of acute inflammatory responses in chronically inflamed and angiogenic tissues, and consider the implications for chronic inflammatory disorders. We have developed a novel model of chronic ischaemia of the mouse cremaster muscle that is characterized by a persistent population of monocyte‐derived cells (MDCs), and capillary angiogenesis. These tissues also show elevated acute neutrophil recruitment in response to locally administered inflammatory stimuli. We determined that Gr1lowMDCs, which are widely considered to have anti‐inflammatory and reparative functions, amplified acute inflammatory reactions via the generation of additional proinflammatory signals, changing both the profile and magnitude of the tissue response. Similar vascular and inflammatory responses, including activation of MDCs by transient ischaemia–reperfusion, were observed in mouse hindlimbs subjected to chronic ischaemia. This response demonstrates the relevance of the findings to peripheral arterial disease, in which patients experience transient exercise‐induced ischaemia known as claudication.These findings demonstrate that chronically inflamed tissues show an altered profile and altered mechanisms of acute inflammatory responses, and identify tissue‐resident MDCs as potential therapeutic targets. © 2016 The Authors. The Journal of Pathology published by John Wiley & Sons Ltd on behalf of Pathological Society of Great Britain and Ireland.
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Affiliation(s)
- Bin Ma
- William Harvey Research Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK.,Cardiovascular Division, King's College London, London, UK
| | - James R Whiteford
- William Harvey Research Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Sussan Nourshargh
- William Harvey Research Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Abigail Woodfin
- William Harvey Research Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK. .,Cardiovascular Division, King's College London, London, UK.
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55
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Lama VN, Belperio JA, Christie JD, El-Chemaly S, Fishbein MC, Gelman AE, Hancock WW, Keshavjee S, Kreisel D, Laubach VE, Looney MR, McDyer JF, Mohanakumar T, Shilling RA, Panoskaltsis-Mortari A, Wilkes DS, Eu JP, Nicolls MR. Models of Lung Transplant Research: a consensus statement from the National Heart, Lung, and Blood Institute workshop. JCI Insight 2017; 2:93121. [PMID: 28469087 DOI: 10.1172/jci.insight.93121] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Lung transplantation, a cure for a number of end-stage lung diseases, continues to have the worst long-term outcomes when compared with other solid organ transplants. Preclinical modeling of the most common and serious lung transplantation complications are essential to better understand and mitigate the pathophysiological processes that lead to these complications. Various animal and in vitro models of lung transplant complications now exist and each of these models has unique strengths. However, significant issues, such as the required technical expertise as well as the robustness and clinical usefulness of these models, remain to be overcome or clarified. The National Heart, Lung, and Blood Institute (NHLBI) convened a workshop in March 2016 to review the state of preclinical science addressing the three most important complications of lung transplantation: primary graft dysfunction (PGD), acute rejection (AR), and chronic lung allograft dysfunction (CLAD). In addition, the participants of the workshop were tasked to make consensus recommendations on the best use of these complimentary models to close our knowledge gaps in PGD, AR, and CLAD. Their reviews and recommendations are summarized in this report. Furthermore, the participants outlined opportunities to collaborate and directions to accelerate research using these preclinical models.
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Affiliation(s)
- Vibha N Lama
- Department of Medicine, University of Michigan Health System, Ann Arbor, Michigan, USA
| | - John A Belperio
- Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, California, USA
| | - Jason D Christie
- Department of Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, USA
| | - Souheil El-Chemaly
- Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Michael C Fishbein
- Department of Pathology and Laboratory Medicine, UCLA Center for the Health Sciences, Los Angeles, California, USA
| | - Andrew E Gelman
- Department of Surgery, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Wayne W Hancock
- Department of Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, USA
| | - Shaf Keshavjee
- Division of Thoracic Surgery, University of Toronto, Toronto, Ontario, Canada
| | - Daniel Kreisel
- Department of Surgery, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Victor E Laubach
- Department of Surgery, University of Virginia School of Medicine, Charlottesville, Virginia, USA
| | - Mark R Looney
- Department of Medicine, UCSF School of Medicine, San Francisco, California, USA
| | - John F McDyer
- Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | | | - Rebecca A Shilling
- Department of Medicine, University of Illinois College of Medicine at Chicago, Illinois, USA
| | - Angela Panoskaltsis-Mortari
- Departments of Pediatrics, and Medicine, University of Minnesota Medical School, Minneapolis, Minnesota, USA
| | - David S Wilkes
- Department of Medicine, University of Virginia School of Medicine, Charlottesville, Virginia, USA
| | - Jerry P Eu
- National Heart, Lung and Blood Institute, NIH, Bethesda, Maryland, USA
| | - Mark R Nicolls
- Department of Medicine, Stanford University School of Medicine/VA Palo Alto Health Care System, Stanford, California, USA
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56
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Zhao H, Xu C, Lee TJ, Liu F, Choi K. ETS transcription factor ETV2/ER71/Etsrp in hematopoietic and vascular development, injury, and regeneration. Dev Dyn 2017; 246:318-327. [DOI: 10.1002/dvdy.24483] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Revised: 12/13/2016] [Accepted: 12/13/2016] [Indexed: 12/17/2022] Open
Affiliation(s)
- Haiyong Zhao
- Department of Pathology and Immunology; Washington University School of Medicine; St. Louis Missouri
| | - Canxin Xu
- Department of Pathology and Immunology; Washington University School of Medicine; St. Louis Missouri
| | - Tae-Jin Lee
- Department of Pathology and Immunology; Washington University School of Medicine; St. Louis Missouri
| | - Fang Liu
- Department of Pathology and Immunology; Washington University School of Medicine; St. Louis Missouri
| | - Kyunghee Choi
- Department of Pathology and Immunology; Washington University School of Medicine; St. Louis Missouri
- Developmental; Regenerative, and Stem Cell Biology Program, Washington University School of Medicine; St. Louis Missouri
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Gostner JM, Fuchs D. Biomarkers for the role of macrophages in the development and progression of atherosclerosis. Atherosclerosis 2016; 255:117-118. [PMID: 27814908 DOI: 10.1016/j.atherosclerosis.2016.10.046] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2016] [Accepted: 10/26/2016] [Indexed: 12/25/2022]
Affiliation(s)
- Johanna M Gostner
- Division of Medical Biochemistry, Biocenter, Innsbruck Medical University, Innsbruck, Austria
| | - Dietmar Fuchs
- Division of Biological Chemistry, Biocenter, Innsbruck Medical University, Innsbruck, Austria.
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58
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Yu H, Moran CS, Trollope AF, Woodward L, Kinobe R, Rush CM, Golledge J. Angiopoietin-2 attenuates angiotensin II-induced aortic aneurysm and atherosclerosis in apolipoprotein E-deficient mice. Sci Rep 2016; 6:35190. [PMID: 27767064 PMCID: PMC5073347 DOI: 10.1038/srep35190] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Accepted: 09/22/2016] [Indexed: 11/09/2022] Open
Abstract
Angiogenesis and inflammation are implicated in aortic aneurysm and atherosclerosis and regulated by angiopoietin-2 (Angpt2). The effect of Angpt2 administration on experimental aortic aneurysm and atherosclerosis was examined. Six-month-old male apolipoprotein E deficient (ApoE-/-) mice were infused with angiotensin II (AngII) and administered subcutaneous human Fc-protein (control) or recombinant Angpt2 (rAngpt2) over 14 days. Administration of rAngpt2 significantly inhibited AngII-induced aortic dilatation and rupture of the suprarenal aorta (SRA), and development of atherosclerosis within the aortic arch. These effects were blood pressure and plasma lipoprotein independent and associated with Tie2 activation and down-regulation of monocyte chemotactic protein-1 (MCP-1) within the SRA. Plasma concentrations of MCP-1 and interleukin-6 were significantly lower in mice receiving rAngpt2. Immunostaining for the monocyte/macrophage marker MOMA-2 and the angiogenesis marker CD31 within the SRA were less in mice receiving rAngpt2 than controls. The percentage of inflammatory (Ly6Chi) monocytes within the bone marrow was increased while that in peripheral blood was decreased by rAngpt2 administration. In conclusion, administration of rAngpt2 attenuated angiotensin II-induced aortic aneurysm and atherosclerosis in ApoE-/- mice associated with reduced aortic inflammation and angiogenesis. Up-regulation of Angpt2 may have potential therapeutic value in patients with aortic aneurysm and atherosclerosis.
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Affiliation(s)
- Hongyou Yu
- Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, Townsville, 4811, Australia
| | - Corey S Moran
- Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, Townsville, 4811, Australia
| | - Alexandra F Trollope
- Discipline of Anatomy, College of Medicine and Dentistry, James Cook University, Townsville, 4811, Australia
| | - Lynn Woodward
- Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, Townsville, 4811, Australia
| | - Robert Kinobe
- Discipline of Biomedicine, College of Public Health, Medical and Veterinary Sciences, James Cook University, Townsville, 4811, Australia
| | - Catherine M Rush
- Discipline of Biomedicine, College of Public Health, Medical and Veterinary Sciences, James Cook University, Townsville, 4811, Australia
| | - Jonathan Golledge
- Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, Townsville, 4811, Australia.,Department of Vascular and Endovascular Surgery, The Townsville Hospital, Townsville, 4814, Australia
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Chen L, Li J, Wang F, Dai C, Wu F, Liu X, Li T, Glauben R, Zhang Y, Nie G, He Y, Qin Z. Tie2 Expression on Macrophages Is Required for Blood Vessel Reconstruction and Tumor Relapse after Chemotherapy. Cancer Res 2016; 76:6828-6838. [PMID: 27758887 DOI: 10.1158/0008-5472.can-16-1114] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Revised: 08/18/2016] [Accepted: 09/14/2016] [Indexed: 11/16/2022]
Affiliation(s)
- Lin Chen
- The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China
- Key Laboratory of Protein and Peptide Pharmaceuticals, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Jie Li
- The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China
- Key Laboratory of Protein and Peptide Pharmaceuticals, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Fei Wang
- The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China
| | - Chengliang Dai
- Key Laboratory of Protein and Peptide Pharmaceuticals, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Fan Wu
- Key Laboratory of Protein and Peptide Pharmaceuticals, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Xiaoman Liu
- Key Laboratory of Protein and Peptide Pharmaceuticals, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Taotao Li
- Laboratory of Vascular and Cancer Biology, Cyrus Tang Hematology Center, Collaborative Innovation Center of Hematology, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases Thrombosis and Hemostasis Key Lab of the Ministry of Health, Jiangsu Institute of Hematology, the First Affiliated Hospital, Soochow University, Suzhou, China
| | - Rainer Glauben
- Charité-Universitätsmedizin Berlin, Campus Benjamin Franklin, Medical Department I, Berlin, Germany
| | - Yi Zhang
- The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China
| | - Guangjun Nie
- National Centre for Nanoscience and Technology of China, Beijing, China
| | - Yulong He
- Laboratory of Vascular and Cancer Biology, Cyrus Tang Hematology Center, Collaborative Innovation Center of Hematology, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases Thrombosis and Hemostasis Key Lab of the Ministry of Health, Jiangsu Institute of Hematology, the First Affiliated Hospital, Soochow University, Suzhou, China.
| | - Zhihai Qin
- The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China.
- Key Laboratory of Protein and Peptide Pharmaceuticals, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
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60
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Ammirati E, Moroni F, Magnoni M, Di Terlizzi S, Villa C, Sizzano F, Palini A, Garlaschelli K, Tripiciano F, Scotti I, Catapano AL, Manfredi AA, Norata GD, Camici PG. Circulating CD14+ and CD14 highCD16- classical monocytes are reduced in patients with signs of plaque neovascularization in the carotid artery. Atherosclerosis 2016; 255:171-178. [PMID: 27751505 DOI: 10.1016/j.atherosclerosis.2016.10.004] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2016] [Revised: 09/16/2016] [Accepted: 10/04/2016] [Indexed: 01/19/2023]
Abstract
BACKGROUND AND AIMS Monocytes are known to play a key role in the initiation and progression of atherosclerosis and contribute to plaque destabilization through the generation of signals that promote inflammation and neoangiogenesis. In humans, studies investigating the features of circulating monocytes in advanced atherosclerotic lesions are lacking. METHODS Patients (mean age 69 years, 56% males) with intermediate asymptomatic carotid stenosis (40-70% in diameter) were evaluated for maximal stenosis in common carotid artery, carotid bulb and internal carotid artery, overall disease burden as estimated with total plaque area (TPA), greyscale and neovascularization in 244 advanced carotid plaques. Absolute counts of circulating CD14+ monocytes, of classical (CD14highCD16-), intermediate (CD14highCD16+) and non-classical (CD14lowCD16+) monocytes and HLA-DR+ median fluorescence intensity for each subset were evaluated with flow cytometry. RESULTS No correlation was found between monocytes and overall atherosclerotic burden, nor with high sensitivity C-reactive protein (hsCRP) or interleukin-6 (IL-6). In contrast, plaque signs of neovascularization were associated with significantly lower counts of circulating CD14+ monocytes (297 versus 350 cells/mm3, p = 0.039) and of classical monocytes (255 versus 310 cells/mm3, p = 0.029). CONCLUSIONS Neovascularized atherosclerotic lesions selectively associate with lower blood levels of CD14+ and CD14highCD16- monocytes independently of systemic inflammatory activity, as indicated by normal hsCRP levels. Whether the reduction of circulating CD14+ and CD14highCD16- monocytes is due to a potential redistribution of these cell types into active lesions remains to be explored.
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Affiliation(s)
- Enrico Ammirati
- Cardiothoracic Department, San Raffaele Scientific Institute and Vita-Salute University, Milan, Italy; De Gasperis Cardio Center, Niguarda Ca' Granda Hospital, Milan, Italy.
| | - Francesco Moroni
- Cardiothoracic Department, San Raffaele Scientific Institute and Vita-Salute University, Milan, Italy.
| | - Marco Magnoni
- Cardiothoracic Department, San Raffaele Scientific Institute and Vita-Salute University, Milan, Italy
| | - Simona Di Terlizzi
- FRACTAL - Flow cytometry Resource Advanced Cytometry Technical Applications Laboratory, San Raffaele Scientific Institute, Milan, Italy
| | - Chiara Villa
- FRACTAL - Flow cytometry Resource Advanced Cytometry Technical Applications Laboratory, San Raffaele Scientific Institute, Milan, Italy
| | - Federico Sizzano
- Nestlé Institute of Health Sciences, Biobanking & Flow Cytometry Core EPFL, Innovation Park Bâtiment H, Lausanne, Switzerland
| | - Alessio Palini
- Nestlé Institute of Health Sciences, Biobanking & Flow Cytometry Core EPFL, Innovation Park Bâtiment H, Lausanne, Switzerland
| | - Katia Garlaschelli
- Center SISA for the Study of Atherosclerosis, Bassini Hospital, Cinisello Balsamo, Italy
| | - Fernanda Tripiciano
- Hematology and Blood Transfusion Service, San Raffaele Scientific Institute, Milan, Italy
| | - Isabella Scotti
- Department of Rheumatology, Istituto Ortopedico Gaetano Pini, Milan, Italy
| | - Alberico Luigi Catapano
- IRCCS - Multimedica Hospital, Sesto San Giovanni, Italy; Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milan, Italy
| | - Angelo A Manfredi
- Unit of Internal Medicine & Clinical Immunology, San Raffaele Scientific Institute and Vita-Salute University, Milan, Italy
| | - Giuseppe Danilo Norata
- Center SISA for the Study of Atherosclerosis, Bassini Hospital, Cinisello Balsamo, Italy; Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milan, Italy; School of Biomedical Sciences, Curtin Health Innovation Research Institute, Curtin University, Perth, Western Australia, Australia
| | - Paolo G Camici
- Cardiothoracic Department, San Raffaele Scientific Institute and Vita-Salute University, Milan, Italy
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Dopheide JF, Geissler P, Rubrech J, Trumpp A, Zeller GC, Bock K, Dorweiler B, Dünschede F, Münzel T, Radsak MP, Espinola-Klein C. Inflammation is associated with a reduced number of pro-angiogenic Tie-2 monocytes and endothelial progenitor cells in patients with critical limb ischemia. Angiogenesis 2016; 19:67-78. [PMID: 26462497 DOI: 10.1007/s10456-015-9489-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Accepted: 10/04/2015] [Indexed: 01/02/2023]
Abstract
BACKGROUND Inflammation is the driving force in atherosclerosis. One central strategy in the treatment for PAD is the promotion of angiogenesis. Here, pro-angiogenic Tie-2-expressing monocytes (TEM) and endothelial progenitor cells (EPC) play a crucial role. Critical limb ischemia (CLI) is characterized by a severe, chronic inflammatory response; thus, progression of the disease might be related to the deleterious effects of inflammation on pro-angiogenic cells. METHODS Forty-five patients with intermittent claudication (IC) [three groups: Rutherford (R)-1, -2, or -3; each n = 15], 20 patients with CLI [n = 20; Rutherford 4 (15 %), 5 (40 %), and 6 (45 %)], and 20 healthy controls were included in the study. Analysis of TEM and EPC was performed from whole blood by flow cytometry. Treatment for IC patients was conservative, and CLI patients underwent surgical revascularization. Follow-up was performed after mean of 7.1 months. RESULTS In comparison with healthy controls, we found increased proportions of TEM and EPC in dependence of the severity of PAD, with the highest level in patients with severe claudication (R3) (p < 0.01). In contrast, for patients with CLI, we found a significantly reduced expression of both TEM and EPC in comparison with healthy controls (p < 0.05) or IC patients (R-1, R-2, and R-3) (all p < 0.001). At follow-up, TEM and EPC in CLI patients increased significantly (both p < 0.001). Serum levels of fibrinogen and CRP were significantly increased in CLI patients (all p < 0.001), but decreased at follow-up (all p < 0.05). TEM and EPC proportions correlated inversely with levels of fibrinogen [(TEM: r = −0.266; p < 0.01) (EPC: r = −0.297; p < 0.001)], CRP (TEM: r = −0.283; p < 0.01) (EPC: r = −0.260; p < 0.01). CONCLUSIONS We found a strong association of diverse inflammatory markers with a reduced proportion of pro-angiogenic TEM or EPC in patients with CLI, giving rise to the speculation that a severe chronic inflammation might lead to deleterious effects on TEM and EPC, possibly interfering with angiogenesis, thus promoting an aggravation of the disease.
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Whiteford JR, De Rossi G, Woodfin A. Mutually Supportive Mechanisms of Inflammation and Vascular Remodeling. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2016; 326:201-78. [PMID: 27572130 DOI: 10.1016/bs.ircmb.2016.05.001] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Chronic inflammation is often accompanied by angiogenesis, the development of new blood vessels from existing ones. This vascular response is a response to chronic hypoxia and/or ischemia, but is also contributory to the progression of disorders including atherosclerosis, arthritis, and tumor growth. Proinflammatory and proangiogenic mediators and signaling pathways form a complex and interrelated network in these conditions, and many factors exert multiple effects. Inflammation drives angiogenesis by direct and indirect mechanisms, promoting endothelial proliferation, migration, and vessel sprouting, but also by mediating extracellular matrix remodeling and release of sequestered growth factors, and recruitment of proangiogenic leukocyte subsets. The role of inflammation in promoting angiogenesis is well documented, but by facilitating greater infiltration of leukocytes and plasma proteins into inflamed tissues, angiogenesis can also propagate chronic inflammation. This review examines the mutually supportive relationship between angiogenesis and inflammation, and considers how these interactions might be exploited to promote resolution of chronic inflammatory or angiogenic disorders.
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Affiliation(s)
- J R Whiteford
- William Harvey Research Institute, Barts and London School of Medicine and Dentistry, Queen Mary College, University of London, London, United Kingdom
| | - G De Rossi
- William Harvey Research Institute, Barts and London School of Medicine and Dentistry, Queen Mary College, University of London, London, United Kingdom
| | - A Woodfin
- Cardiovascular Division, King's College, University of London, London, United Kingdom.
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63
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Tie2 Expressing Monocytes in the Spleen of Patients with Primary Myelofibrosis. PLoS One 2016; 11:e0156990. [PMID: 27281335 PMCID: PMC4900622 DOI: 10.1371/journal.pone.0156990] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Accepted: 05/23/2016] [Indexed: 12/15/2022] Open
Abstract
Primary myelofibrosis (PMF) is a Philadelphia-negative (Ph−) myeloproliferative disorder, showing abnormal CD34+ progenitor cell trafficking, splenomegaly, marrow fibrosis leading to extensive extramedullary haematopoiesis, and abnormal neoangiogenesis in either the bone marrow or the spleen. Monocytes expressing the angiopoietin-2 receptor (Tie2) have been shown to support abnormal angiogenic processes in solid tumors through a paracrine action that takes place in proximity to the vessels. In this study we investigated the frequency of Tie2 expressing monocytes in the spleen tissue samples of patients with PMF, and healthy subjects (CTRLs), and evaluated their possible role in favouring spleen angiogenesis. We show by confocal microscopy that in the spleen tissue of patients with PMF, but not of CTRLs, the most of the CD14+ cells are Tie2+ and are close to vessels; by flow cytometry, we found that Tie2 expressing monocytes were Tie2+CD14lowCD16brightCDL62−CCR2− (TEMs) and their frequency was higher (p = 0.008) in spleen tissue-derived mononuclear cells (MNCs) of patients with PMF than in spleen tissue-derived MNCs from CTRLs undergoing splenectomy for abdominal trauma. By in vitro angiogenesis assay we evidenced that conditioned medium of immunomagnetically selected spleen tissue derived CD14+ cells of patients with PMF induced a denser tube like net than that of CTRLs; in addition, CD14+Tie2+ cells sorted from spleen tissue derived single cell suspension of patients with PMF show a higher expression of genes involved in angiogenesis than that found in CTRLs. Our results document the enrichment of Tie2+ monocytes expressing angiogenic genes in the spleen of patients with PMF, suggesting a role for these cells in starting/maintaining the pathological angiogenesis in this organ.
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Thomas D, Thirumaran A, Mallard B, Chen X, Browne S, Wheatley AM, O'Brien T, Pandit A. Variability in Endogenous Perfusion Recovery of Immunocompromised Mouse Models of Limb Ischemia. Tissue Eng Part C Methods 2016; 22:370-81. [DOI: 10.1089/ten.tec.2015.0441] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Affiliation(s)
- Dilip Thomas
- Regenerative Medicine Institute, National University of Ireland Galway, Galway, Ireland
- Centre for Research in Medical Devices (CÚRAM), National University of Ireland Galway, Galway, Ireland
| | - Arun Thirumaran
- Regenerative Medicine Institute, National University of Ireland Galway, Galway, Ireland
| | - Beth Mallard
- Department of Physiology, National University of Ireland Galway, Galway, Ireland
| | - Xizhe Chen
- Regenerative Medicine Institute, National University of Ireland Galway, Galway, Ireland
| | - Shane Browne
- Centre for Research in Medical Devices (CÚRAM), National University of Ireland Galway, Galway, Ireland
| | - Antony M. Wheatley
- Department of Physiology, National University of Ireland Galway, Galway, Ireland
| | - Timothy O'Brien
- Regenerative Medicine Institute, National University of Ireland Galway, Galway, Ireland
- Centre for Research in Medical Devices (CÚRAM), National University of Ireland Galway, Galway, Ireland
| | - Abhay Pandit
- Centre for Research in Medical Devices (CÚRAM), National University of Ireland Galway, Galway, Ireland
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Wang X, Dai Z, Wu X, Wang K, Wang X. Distinct RNA transcriptome patterns are potentially associated with angiogenesis in Tie2-expressing monocytes. Gene 2015; 580:1-7. [PMID: 26748243 DOI: 10.1016/j.gene.2015.12.065] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Revised: 11/09/2015] [Accepted: 12/29/2015] [Indexed: 01/04/2023]
Abstract
Tie2-expressing Monocytes (TEMs) were previously identified as a novel subset of monocytes and were believed to have prominent pro-angiogenesis activities in human tumors. While the molecular mechanism of the angiogenesis promoting capacity of TEMs remains unclear. RNA transcriptome pattern, including non-coding RNAs as microRNA (miRNA) and long non-coding RNA (lncRNA), plays important role in cell differentiation and functions. However, little is known about the transcriptome patterns of TEMs, including those non-coding RNAs. We explore the transcriptome of TEMs and the matched monocytes that do not express Tie2 (Tie2(-)monocytes) isolated from peripheral blood of healthy adults employing the Agilent Human miRNA(8*60K,Design ID: 046064)microarray and the Agilent lncRNA Gene Expression(4*180K, Design ID: 042818)microarray. A total of 141 mRNAs, 142 lncRNAs and 75 miRNAs were found dysregulated in TEMs compared to Tie2(-)monocytes. TEMs have the distinct RNA transcriptome patterns according to the Hierarchical clustering and then the gene expression patterns were confirmed by quantitative real-time reverse transcription polymerase chain reaction (qRT-PCR). Functional annotation by Gene Ontology (GO) analyses showed that the up-regulated mRNAs in TEMs were associated to blood vessel remodeling and positive regulation of epithelial cell proliferation, and the up-regulated insulin like growth factor 1(IGF1) mRNA was involved in both pathways. For functional analysis of those dysregulated non-coding RNAs, target genes of the miRNAs were predicted and cis/trans-regulation analysis of the lncRNAs were performed.
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Affiliation(s)
- Xinjing Wang
- Shanghai First Maternity and Infant Hospital, Tongji University, School of Medicine.
| | - Zhiyuan Dai
- Shanghai First Maternity and Infant Hospital, Tongji University, School of Medicine.
| | - Xiaoli Wu
- Shanghai First Maternity and Infant Hospital, Tongji University, School of Medicine.
| | - Kai Wang
- Shanghai First Maternity and Infant Hospital, Tongji University, School of Medicine.
| | - Xipeng Wang
- Shanghai First Maternity and Infant Hospital, Tongji University, School of Medicine.
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66
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Eljaszewicz A, Sienkiewicz D, Grubczak K, Okurowska-Zawada B, Paszko-Patej G, Miklasz P, Singh P, Radzikowska U, Kulak W, Moniuszko M. Effect of Periodic Granulocyte Colony-Stimulating Factor Administration on Endothelial Progenitor Cells and Different Monocyte Subsets in Pediatric Patients with Muscular Dystrophies. Stem Cells Int 2015; 2016:2650849. [PMID: 26770204 PMCID: PMC4684893 DOI: 10.1155/2016/2650849] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2015] [Accepted: 07/26/2015] [Indexed: 01/07/2023] Open
Abstract
Muscular dystrophies (MD) are heterogeneous group of diseases characterized by progressive muscle dysfunction. There is a large body of evidence indicating that angiogenesis is impaired in muscles of MD patients. Therefore, induction of dystrophic muscle revascularization should become a novel approach aimed at diminishing the extent of myocyte damage. Recently, we and others demonstrated that administration of granulocyte colony-stimulating factor (G-CSF) resulted in clinical improvement of patients with neuromuscular disorders. To date, however, the exact mechanisms underlying these beneficial effects of G-CSF have not been fully understood. Here we used flow cytometry to quantitate numbers of CD34+ cells, endothelial progenitor cells, and different monocyte subsets in peripheral blood of pediatric MD patients treated with repetitive courses of G-CSF administration. We showed that repetitive cycles of G-CSF administration induced efficient mobilization of above-mentioned cells including cells with proangiogenic potential. These findings contribute to better understanding the beneficial clinical effects of G-CSF in pediatric MD patients.
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Affiliation(s)
- Andrzej Eljaszewicz
- Department of Regenerative Medicine and Immune Regulation, Medical University of Bialystok, 15-269 Bialystok, Poland
| | - Dorota Sienkiewicz
- Department of Pediatric Rehabilitation and Center of Early Support for Handicapped Children “Give a Chance”, Medical University of Bialystok, 15-274 Bialystok, Poland
| | - Kamil Grubczak
- Department of Regenerative Medicine and Immune Regulation, Medical University of Bialystok, 15-269 Bialystok, Poland
- Department of Immunology, Medical University of Bialystok, 15-269 Bialystok, Poland
| | - Bożena Okurowska-Zawada
- Department of Pediatric Rehabilitation and Center of Early Support for Handicapped Children “Give a Chance”, Medical University of Bialystok, 15-274 Bialystok, Poland
| | - Grażyna Paszko-Patej
- Department of Pediatric Rehabilitation and Center of Early Support for Handicapped Children “Give a Chance”, Medical University of Bialystok, 15-274 Bialystok, Poland
| | - Paula Miklasz
- Department of Regenerative Medicine and Immune Regulation, Medical University of Bialystok, 15-269 Bialystok, Poland
| | - Paulina Singh
- Department of Regenerative Medicine and Immune Regulation, Medical University of Bialystok, 15-269 Bialystok, Poland
| | - Urszula Radzikowska
- Department of Regenerative Medicine and Immune Regulation, Medical University of Bialystok, 15-269 Bialystok, Poland
| | - Wojciech Kulak
- Department of Pediatric Rehabilitation and Center of Early Support for Handicapped Children “Give a Chance”, Medical University of Bialystok, 15-274 Bialystok, Poland
| | - Marcin Moniuszko
- Department of Regenerative Medicine and Immune Regulation, Medical University of Bialystok, 15-269 Bialystok, Poland
- Department of Allergology and Internal Medicine, Medical University of Bialystok, 15-276 Bialystok, Poland
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Krieger JR, Ogle ME, McFaline-Figueroa J, Segar CE, Temenoff JS, Botchwey EA. Spatially localized recruitment of anti-inflammatory monocytes by SDF-1α-releasing hydrogels enhances microvascular network remodeling. Biomaterials 2015; 77:280-90. [PMID: 26613543 DOI: 10.1016/j.biomaterials.2015.10.045] [Citation(s) in RCA: 85] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Revised: 10/14/2015] [Accepted: 10/18/2015] [Indexed: 01/04/2023]
Abstract
Tissue repair processes are characterized by the biphasic recruitment of distinct subpopulations of blood monocytes, including classical ("inflammatory") monocytes (IMs, Ly6C(hi)Gr1(+)CX3CR1(lo)) and non-classical anti-inflammatory monocytes (AMs, Ly6C(lo)Gr1(-)CX3CR1(hi)). Drug-eluting biomaterial implants can be used to tune the endogenous repair process by the preferential recruitment of pro-regenerative cells. To enhance recruitment of AMs during inflammatory injury, a novel N-desulfated heparin-containing poly(ethylene glycol) diacrylate (PEG-DA) hydrogel was engineered to deliver exogenous stromal derived factor-1α (SDF-1α), utilizing the natural capacity of heparin to sequester and release growth factors. SDF-1α released from the hydrogels maintained its bioactivity and stimulated chemotaxis of bone marrow cells in vitro. Intravital microscopy and flow cytometry demonstrated that SDF-1α hydrogels implanted in a murine dorsal skinfold window chamber promoted spatially-localized recruitment of AMs relative to unloaded internal control hydrogels. SDF-1α delivery stimulated arteriolar remodeling that was correlated with AM enrichment in the injury niche. SDF-1α, but not unloaded control hydrogels, supported sustained arteriogenesis and microvascular network growth through 7 days. The recruitment of AMs correlated with parameters of vascular remodeling suggesting that tuning the innate immune response by biomaterial SDF-1α release is a promising strategy for promoting vascular remodeling in a spatially controlled manner.
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Affiliation(s)
- J R Krieger
- W.H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA 30332, USA
| | - M E Ogle
- W.H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA 30332, USA
| | - J McFaline-Figueroa
- W.H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA 30332, USA
| | - C E Segar
- W.H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA 30332, USA
| | - J S Temenoff
- W.H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA 30332, USA; Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA 30332, USA
| | - E A Botchwey
- W.H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA 30332, USA; Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA 30332, USA.
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68
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So Many False Dawns. Eur J Vasc Endovasc Surg 2015; 50:3-4. [PMID: 26001323 DOI: 10.1016/j.ejvs.2015.04.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2015] [Accepted: 04/13/2015] [Indexed: 11/24/2022]
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69
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Venneri MA, Giannetta E, Panio G, De Gaetano R, Gianfrilli D, Pofi R, Masciarelli S, Fazi F, Pellegrini M, Lenzi A, Naro F, Isidori AM. Chronic Inhibition of PDE5 Limits Pro-Inflammatory Monocyte-Macrophage Polarization in Streptozotocin-Induced Diabetic Mice. PLoS One 2015; 10:e0126580. [PMID: 25961566 PMCID: PMC4427327 DOI: 10.1371/journal.pone.0126580] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2015] [Accepted: 04/06/2015] [Indexed: 02/06/2023] Open
Abstract
Diabetes mellitus is characterized by changes in endothelial cells that alter monocyte recruitment, increase classic (M1-type) tissue macrophage infiltration and lead to self-sustained inflammation. Our and other groups recently showed that chronic inhibition of phosphodiesterase-5 (PDE5i) affects circulating cytokine levels in patients with diabetes; whether PDE5i also affects circulating monocytes and tissue inflammatory cell infiltration remains to be established. Using murine streptozotocin (STZ)-induced diabetes and in human vitro cell-cell adhesion models we show that chronic hyperglycemia induces changes in myeloid and endothelial cells that alter monocyte recruitment and lead to self-sustained inflammation. Continuous PDE5i with sildenafil (SILD) expanded tissue anti-inflammatory TIE2-expressing monocytes (TEMs), which are known to limit inflammation and promote tissue repair. Specifically, SILD: 1) normalizes the frequency of circulating pro-inflammatory monocytes triggered by hyperglycemia (53.7 ± 7.9% of CD11b+Gr-1+ cells in STZ vs. 30.4 ± 8.3% in STZ+SILD and 27.1 ± 1.6% in CTRL, P<0.01); 2) prevents STZ-induced tissue inflammatory infiltration (4-fold increase in F4/80+ macrophages in diabetic vs. control mice) by increasing renal and heart anti-inflammatory TEMs (30.9 ± 3.6% in STZ+SILD vs. 6.9 ± 2.7% in STZ, P <0.01, and 11.6 ± 2.9% in CTRL mice); 3) reduces vascular inflammatory proteins (iNOS, COX2, VCAM-1) promoting tissue protection; 4) lowers monocyte adhesion to human endothelial cells in vitro through the TIE2 receptor. All these changes occurred independently from changes of glycemic status. In summary, we demonstrate that circulating renal and cardiac TEMs are defective in chronic hyperglycemia and that SILD normalizes their levels by facilitating the shift from classic (M1-like) to alternative (M2-like)/TEM macrophage polarization. Restoration of tissue TEMs with PDE5i could represent an additional pharmacological tool to prevent end-organ diabetic complications.
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Affiliation(s)
- Mary Anna Venneri
- Department of Experimental Medicine, Sapienza University of Rome, Rome, Italy
- * E-mail: (AMI); (MAV)
| | - Elisa Giannetta
- Department of Experimental Medicine, Sapienza University of Rome, Rome, Italy
| | - Giuseppe Panio
- Department of Experimental Medicine, Sapienza University of Rome, Rome, Italy
| | - Rita De Gaetano
- Department of Anatomical, Histological, Forensic and Orthopedic Sciences, Sapienza University, Rome, Italy
| | - Daniele Gianfrilli
- Department of Experimental Medicine, Sapienza University of Rome, Rome, Italy
| | - Riccardo Pofi
- Department of Experimental Medicine, Sapienza University of Rome, Rome, Italy
| | - Silvia Masciarelli
- Department of Anatomical, Histological, Forensic and Orthopedic Sciences, Sapienza University, Rome, Italy
| | - Francesco Fazi
- Department of Anatomical, Histological, Forensic and Orthopedic Sciences, Sapienza University, Rome, Italy
| | - Manuela Pellegrini
- Department of Medicine and Health Sciences, University of Molise, Campobasso, Italy
| | - Andrea Lenzi
- Department of Experimental Medicine, Sapienza University of Rome, Rome, Italy
| | - Fabio Naro
- Department of Anatomical, Histological, Forensic and Orthopedic Sciences, Sapienza University, Rome, Italy
| | - Andrea M. Isidori
- Department of Experimental Medicine, Sapienza University of Rome, Rome, Italy
- * E-mail: (AMI); (MAV)
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Szade A, Grochot-Przeczek A, Florczyk U, Jozkowicz A, Dulak J. Cellular and molecular mechanisms of inflammation-induced angiogenesis. IUBMB Life 2015; 67:145-59. [PMID: 25899846 DOI: 10.1002/iub.1358] [Citation(s) in RCA: 145] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2014] [Accepted: 01/20/2015] [Indexed: 02/06/2023]
Abstract
Blood vessel formation is a fundamental process for the development of organism and tissue regeneration. Of importance, angiogenesis occurring during postnatal development is usually connected with inflammation. Here, we review how molecular and cellular mechanisms underlying inflammatory reactions regulate angiogenesis. Inflamed tissues are characterized by hypoxic conditions and immune cell infiltration. In this review, we describe an interplay of hypoxia-inducible factors (HIFs), HIF1 and HIF2, as well as NF-κB and nitric oxide in the regulation of angiogenesis. The mobilization of macrophages and the differential role of M1 and M2 macrophage subsets in angiogenesis are also discussed. Next, we present the current knowledge about microRNA regulation of inflammation in the context of new blood vessel formation. Finally, we describe how the mechanisms involved in inflammation influence tumor angiogenesis. We underlay and discuss the role of NF-E2-related factor 2/heme oxygenase-1 pathway as crucial in the regulation of inflammation-induced angiogenesis.
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Affiliation(s)
- Agata Szade
- Department of Medical Biotechnology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
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Bajwa A, Wesolowski R, Patel A, Saha P, Ludwinski F, Smith A, Nagel E, Modarai B. Assessment of tissue perfusion in the lower limb: current methods and techniques under development. Circ Cardiovasc Imaging 2014; 7:836-43. [PMID: 25227236 DOI: 10.1161/circimaging.114.002123] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Adnan Bajwa
- From the Cardiovascular Division, Academic Department of Surgery, Kings College London, BHF Centre of Research Excellence & NIHR Biomedical Research Centre at Kings Health Partners, St Thomas' Hospital, London, United Kingdom (A.B., A.P., P.S., F.L., A.S., B.M.); and Division of Imaging Sciences and Biomedical Engineering. Department of Cardiovascular Imaging, Kings College London, BHF Centre of Research Excellence, Wellcome Trust-EPSRC Medical Engineering Centre & NIHR Biomedical Research Centre at Kings Health Partners, St. Thomas' Hospital, London, United Kingdom (R.W., E.N.)
| | - Roman Wesolowski
- From the Cardiovascular Division, Academic Department of Surgery, Kings College London, BHF Centre of Research Excellence & NIHR Biomedical Research Centre at Kings Health Partners, St Thomas' Hospital, London, United Kingdom (A.B., A.P., P.S., F.L., A.S., B.M.); and Division of Imaging Sciences and Biomedical Engineering. Department of Cardiovascular Imaging, Kings College London, BHF Centre of Research Excellence, Wellcome Trust-EPSRC Medical Engineering Centre & NIHR Biomedical Research Centre at Kings Health Partners, St. Thomas' Hospital, London, United Kingdom (R.W., E.N.)
| | - Ashish Patel
- From the Cardiovascular Division, Academic Department of Surgery, Kings College London, BHF Centre of Research Excellence & NIHR Biomedical Research Centre at Kings Health Partners, St Thomas' Hospital, London, United Kingdom (A.B., A.P., P.S., F.L., A.S., B.M.); and Division of Imaging Sciences and Biomedical Engineering. Department of Cardiovascular Imaging, Kings College London, BHF Centre of Research Excellence, Wellcome Trust-EPSRC Medical Engineering Centre & NIHR Biomedical Research Centre at Kings Health Partners, St. Thomas' Hospital, London, United Kingdom (R.W., E.N.)
| | - Prakash Saha
- From the Cardiovascular Division, Academic Department of Surgery, Kings College London, BHF Centre of Research Excellence & NIHR Biomedical Research Centre at Kings Health Partners, St Thomas' Hospital, London, United Kingdom (A.B., A.P., P.S., F.L., A.S., B.M.); and Division of Imaging Sciences and Biomedical Engineering. Department of Cardiovascular Imaging, Kings College London, BHF Centre of Research Excellence, Wellcome Trust-EPSRC Medical Engineering Centre & NIHR Biomedical Research Centre at Kings Health Partners, St. Thomas' Hospital, London, United Kingdom (R.W., E.N.)
| | - Francesca Ludwinski
- From the Cardiovascular Division, Academic Department of Surgery, Kings College London, BHF Centre of Research Excellence & NIHR Biomedical Research Centre at Kings Health Partners, St Thomas' Hospital, London, United Kingdom (A.B., A.P., P.S., F.L., A.S., B.M.); and Division of Imaging Sciences and Biomedical Engineering. Department of Cardiovascular Imaging, Kings College London, BHF Centre of Research Excellence, Wellcome Trust-EPSRC Medical Engineering Centre & NIHR Biomedical Research Centre at Kings Health Partners, St. Thomas' Hospital, London, United Kingdom (R.W., E.N.)
| | - Alberto Smith
- From the Cardiovascular Division, Academic Department of Surgery, Kings College London, BHF Centre of Research Excellence & NIHR Biomedical Research Centre at Kings Health Partners, St Thomas' Hospital, London, United Kingdom (A.B., A.P., P.S., F.L., A.S., B.M.); and Division of Imaging Sciences and Biomedical Engineering. Department of Cardiovascular Imaging, Kings College London, BHF Centre of Research Excellence, Wellcome Trust-EPSRC Medical Engineering Centre & NIHR Biomedical Research Centre at Kings Health Partners, St. Thomas' Hospital, London, United Kingdom (R.W., E.N.)
| | - Eike Nagel
- From the Cardiovascular Division, Academic Department of Surgery, Kings College London, BHF Centre of Research Excellence & NIHR Biomedical Research Centre at Kings Health Partners, St Thomas' Hospital, London, United Kingdom (A.B., A.P., P.S., F.L., A.S., B.M.); and Division of Imaging Sciences and Biomedical Engineering. Department of Cardiovascular Imaging, Kings College London, BHF Centre of Research Excellence, Wellcome Trust-EPSRC Medical Engineering Centre & NIHR Biomedical Research Centre at Kings Health Partners, St. Thomas' Hospital, London, United Kingdom (R.W., E.N.)
| | - Bijan Modarai
- From the Cardiovascular Division, Academic Department of Surgery, Kings College London, BHF Centre of Research Excellence & NIHR Biomedical Research Centre at Kings Health Partners, St Thomas' Hospital, London, United Kingdom (A.B., A.P., P.S., F.L., A.S., B.M.); and Division of Imaging Sciences and Biomedical Engineering. Department of Cardiovascular Imaging, Kings College London, BHF Centre of Research Excellence, Wellcome Trust-EPSRC Medical Engineering Centre & NIHR Biomedical Research Centre at Kings Health Partners, St. Thomas' Hospital, London, United Kingdom (R.W., E.N.).
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72
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The angiopoietin/TIE receptor system: Focusing its role for ischemia-reperfusion injury. Cytokine Growth Factor Rev 2014; 26:281-91. [PMID: 25466648 DOI: 10.1016/j.cytogfr.2014.10.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2014] [Revised: 10/23/2014] [Accepted: 10/30/2014] [Indexed: 02/07/2023]
Abstract
Ischemia and reperfusion (I/R) are of fatal consequence for the affected organs, as they provoke a profound inflammatory reaction. This thoroughly destroys cells and tissues, inducing functional failure or even complete loss of organ function. Since I/R is primarily a vascular problem, the interaction between the endothelium and the surrounding environment is of great significance. The angiopoietins (ANG) and the TIE receptors are key players for the vascular homeostasis. This review summarizes biochemical and cellular mechanisms leading to I/R injury. After a brief introduction to the ANG/TIE system, a comprehensive overview of its role for the development of I/R syndrome is given. Finally, current therapeutic approaches to mitigate the consequences of I/R by modulating ANG/TIE signaling are reviewed in detail.
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73
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Mei Y, Thompson MD, Shiraishi Y, Cohen RA, Tong X. Sarcoplasmic/endoplasmic reticulum Ca2+ ATPase C674 promotes ischemia- and hypoxia-induced angiogenesis via coordinated endothelial cell and macrophage function. J Mol Cell Cardiol 2014; 76:275-82. [PMID: 25260714 PMCID: PMC4250384 DOI: 10.1016/j.yjmcc.2014.09.018] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/02/2014] [Revised: 09/10/2014] [Accepted: 09/15/2014] [Indexed: 12/22/2022]
Abstract
Ischemia is a complex phenomenon modulated by the concerted action of several cell types. We have identified that sarcoplasmic/endoplasmic reticulum Ca(2+) ATPase 2 (SERCA 2) cysteine 674 (C674) S-glutathiolation is essential for ischemic angiogenesis, vascular endothelial growth factor (VEGF)-mediated endothelial cell (EC) migration and network formation. A heterozygote SERCA 2 C674S knockin (SKI) mouse shows impaired ischemic blood flow recovery after femoral artery ligation, and its ECs show depleted endoplasmic reticulum (ER) Ca(2+) stores and impaired angiogenic behavior. Here we studied the role of SERCA 2 C674 in the interaction between ECs and macrophages in the context of ischemia and discovered the involvement of the ER stress response protein, ER oxidoreductin-1α (ERO1). In wild type (WT) mice, expression of ERO1 was increased in the ischemic hind limb in vivo, as well as in ECs and macrophages exposed to hypoxia in vitro. The increase in ERO1 to ischemia/hypoxia was less in SKI mice. In WT ECs, both vascular cell adhesion molecule 1 (VCAM1) expression and bone marrow-derived macrophage adhesion to ECs were increased by hypoxia, and both were attenuated in SKI ECs. In WT ECs, ERO1 siRNA blocked hypoxia-induced VCAM1 expression and macrophage adhesion. In WT macrophages, hypoxia also stimulated both ERO1 and VEGF expression, and both were less in SKI macrophages. Compared with conditioned media of hypoxic SKI macrophages, conditioned media from WT macrophages had a greater effect on EC angiogenic behavior, and were blocked by VEGF neutralizing antibody. Taken together, under hypoxic conditions, SERCA 2 C674 and ERO1 enable increased VCAM1 expression and macrophage adhesion to ECs, as well as macrophage VEGF production that, in turn, promote angiogenesis. This study highlights the hitherto unrecognized interaction of two ER proteins, SERCA 2 C674 and ERO1, which mediate the EC and macrophage angiogenic response to ischemia/hypoxia.
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Affiliation(s)
- Yu Mei
- Vascular Biology Section, Department of Medicine, Whitaker Cardiovascular Institute, Boston University School of Medicine, Boston, MA 02118, USA
| | - Melissa D Thompson
- Vascular Biology Section, Department of Medicine, Whitaker Cardiovascular Institute, Boston University School of Medicine, Boston, MA 02118, USA
| | - Yasunaga Shiraishi
- Vascular Biology Section, Department of Medicine, Whitaker Cardiovascular Institute, Boston University School of Medicine, Boston, MA 02118, USA
| | - Richard A Cohen
- Vascular Biology Section, Department of Medicine, Whitaker Cardiovascular Institute, Boston University School of Medicine, Boston, MA 02118, USA.
| | - Xiaoyong Tong
- Innovative Drug Research Centre, Chongqing University, Chongqing 401331, China.
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74
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Yoo JS, Das RK, Jow ZY, Chang YT. In vivo detection of macrophage recruitment in hind-limb ischemia using a targeted near-infrared fluorophore. PLoS One 2014; 9:e103721. [PMID: 25072508 PMCID: PMC4114964 DOI: 10.1371/journal.pone.0103721] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2014] [Accepted: 07/03/2014] [Indexed: 12/17/2022] Open
Abstract
Macrophages are an essential component of the immune system and have protective and pathogenic functions in various diseases. Imaging of macrophages in vivo could furnish new tools to advance evaluation of disease and therapies. Critical limb ischemia is a disease in which macrophages have considerable pathogenic roles, and are potential targets for cell-based immunotherapy. We sought to develop a new near-infrared fluorescence (NIRF) imaging probe to target macrophages specifically in vivo in various pathological states, including hind-limb ischemia. We rapidly screened the photostable cyanine-based NIRF library against different blood cell lines. The identified monocyte/macrophage-selective hit was tested in vitro in live-cell labeling assay. Non-invasive NIRF imaging was performed with murine models of paw inflammation by lipopolysaccharide challenge and hind-limb ischemia with femoral artery ligation. in vivo macrophage targeting was further evaluated using intravital microscopy with Csf1r-EGFP transgenic mice and immunofluorescent staining with macrophage-specific markers. We discovered MF800, a Macrophage-specific near-infrared Fluorophore, which showed selective live-cell imaging performance in a panel of cell lines and primary human blood samples. MF800 outperforms the clinically-available NIRF contrast agent ICG for in vivo specificity in paw inflammation and hind-limb ischemia models. We observed a marked overlap of MF800-labeled cells and EGFP-expressing macrophages in intravital imaging of Csf1r-EGFP transgenic mice. In the histologic analysis, MF800-positive cells also expressed the macrophage markers CD68 and CD169. NIRF imaging showcased the potential of using MF800 to understand macrophage behavior in vivo, characterize macrophage-associated diseases, and may help in assessing therapeutic responses in the clinic.
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Affiliation(s)
- Jung Sun Yoo
- Smart Humanity Convergence Center, Department of Transdisciplinary Studies, Graduate School of Convergence Science and Technology, Seoul National University, Suwon, Korea
- Department of Chemistry, National University of Singapore, Singapore, Singapore
| | - Raj Kumar Das
- Department of Chemistry, National University of Singapore, Singapore, Singapore
| | - Zhi Yen Jow
- Laboratory of Bioimaging Probe Development, Singapore Bioimaging Consortium, Agency for Science, Technology and Research, Singapore, Singapore
| | - Young-Tae Chang
- Department of Chemistry, National University of Singapore, Singapore, Singapore
- Laboratory of Bioimaging Probe Development, Singapore Bioimaging Consortium, Agency for Science, Technology and Research, Singapore, Singapore
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75
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Alias S, Lang IM. Coagulation and the vessel wall in pulmonary embolism. Pulm Circ 2014; 3:728-38. [PMID: 25006391 DOI: 10.1086/674768] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2012] [Accepted: 08/05/2013] [Indexed: 01/28/2023] Open
Abstract
Venous thromboembolism comprises deep-vein thrombosis, thrombus in transit, acute pulmonary embolism, and chronic thromboembolic pulmonary hypertension (CTEPH). Pulmonary thromboemboli commonly resolve, with restoration of normal pulmonary hemodynamics. When they fail to resorb, permanent occlusion of the deep veins and/or CTEPH are the consequences. Apart from endogenous fibrinolysis, venous thrombi resolve by a process of mechanical fragmentation, through organization of the thromboembolus by invasion of endothelial cells, leukocytes, and fibroblasts leading to recanalization. Recent data utilizing various models have contributed to a better understanding of venous thrombosis and the resolution process that is directed at maintaining vascular patency. This review summarizes the plasmatic and cellular components of venous thrombus formation and resolution.
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Affiliation(s)
- Sherin Alias
- Department of Internal Medicine II, Division of Cardiology, Medical University of Vienna, Vienna, Austria
| | - Irene M Lang
- Department of Internal Medicine II, Division of Cardiology, Medical University of Vienna, Vienna, Austria
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76
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Jiang X, Tian W, Sung YK, Qian J, Nicolls MR. Macrophages in solid organ transplantation. Vasc Cell 2014; 6:5. [PMID: 24612731 PMCID: PMC3975229 DOI: 10.1186/2045-824x-6-5] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2013] [Accepted: 02/25/2014] [Indexed: 12/19/2022] Open
Abstract
Macrophages are highly plastic hematopoietic cells with diversified functions related to their anatomic location and differentiation states. A number of recent studies have examined the role of macrophages in solid organ transplantation. These studies show that macrophages can induce allograft injury but, conversely, can also promote tissue repair in ischemia-reperfusion injury and acute rejection. Therapeutic strategies that target macrophages to improve outcomes in solid organ transplant recipients are being examined in preclinical and clinical models. In this review, we discuss the role of macrophages in different types of injury and rejection, with a focus on macrophage-mediated tissue injury, specifically vascular injury, repair and remodeling. We also discuss emerging macrophage-centered therapeutic opportunities in solid organ transplantation.
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Affiliation(s)
- Xinguo Jiang
- Department of Medicine, VA Palo Alto Health Care System/Division of Pulmonary/Critical Care, Stanford University School of Medicine, Stanford, CA 94304, USA.
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77
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Alias S, Redwan B, Panzenboeck A, Winter MP, Schubert U, Voswinckel R, Frey MK, Jakowitsch J, Alimohammadi A, Hobohm L, Mangold A, Bergmeister H, Sibilia M, Wagner EF, Mayer E, Klepetko W, Hoelzenbein TJ, Preissner KT, Lang IM. Defective angiogenesis delays thrombus resolution: a potential pathogenetic mechanism underlying chronic thromboembolic pulmonary hypertension. Arterioscler Thromb Vasc Biol 2014; 34:810-819. [PMID: 24526692 DOI: 10.1161/atvbaha.113.302991] [Citation(s) in RCA: 82] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
OBJECTIVE Restoration of patency is a natural target of vascular remodeling after venous thrombosis that involves vascular endothelial cells and smooth muscle cells, as well as leukocytes. Acute pulmonary emboli usually resolve <6 months. However, in some instances, thrombi transform into fibrous vascular obstructions, resulting in occlusion of the deep veins, or in chronic thromboembolic pulmonary hypertension (CTEPH). We proposed that dysregulated thrombus angiogenesis may contribute to thrombus persistence. APPROACH AND RESULTS Mice with an endothelial cell-specific conditional deletion of vascular endothelial growth factor receptor 2/kinase insert domain protein receptor were used in a model of stagnant flow venous thrombosis closely resembling human deep vein thrombosis. Biochemical and functional analyses were performed on pulmonary endarterectomy specimens from patients with CTEPH, a human model of nonresolving venous thromboembolism. Endothelial cell-specific deletion of kinase insert domain protein receptor and subsequent ablation of thrombus vascularization delayed thrombus resolution. In accordance with these findings, organized human CTEPH thrombi were largely devoid of vascular structures. Several vessel-specific genes, such as kinase insert domain protein receptor, vascular endothelial cadherin, and podoplanin, were expressed at lower levels in white CTEPH thrombi than in organizing deep vein thrombi and organizing thrombi from aortic aneurysms. In addition, red CTEPH thrombi attenuated the angiogenic response induced by vascular endothelial growth factor. CONCLUSIONS In the present work, we propose a mechanism of thrombus nonresolution demonstrating that endothelial cell-specific deletion of kinase insert domain protein receptor abates thrombus vessel formation, misguiding thrombus resolution. Medical conditions associated with the development of CTEPH may be compromising early thrombus angiogenesis.
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Affiliation(s)
- Sherin Alias
- Department of Cardiology, Medical University of Vienna, Vienna, Austria
| | - Bassam Redwan
- Department of Cardiothoracic Surgery, University Hospital Muenster, Muenster, Germany
| | | | - Max P Winter
- Department of Cardiology, Medical University of Vienna, Vienna, Austria
| | - Uwe Schubert
- Institute for Biochemistry, Medical School, Justus-Liebig-University, Giessen, Germany
| | - Robert Voswinckel
- Department of Lung Development and Remodeling, Max-Planck-Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Maria K Frey
- Department of Cardiology, Medical University of Vienna, Vienna, Austria
| | | | | | - Lukas Hobohm
- Department of Cardiology, Medical University of Vienna, Vienna, Austria
| | - Andreas Mangold
- Department of Cardiology, Medical University of Vienna, Vienna, Austria
| | - Helga Bergmeister
- Department of Biomedical Research, Medical University of Vienna, Vienna, Austria
| | - Maria Sibilia
- Institute for Cancer Research, Department of Medicine I, Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
| | - Erwin F Wagner
- Centro Nacional de Investigaciones Oncológicas, Madrid, Spain
| | - Eckhard Mayer
- Department of Thoracic Surgery, Kerckhoff Clinic Heart and Lung Centre, Bad Nauheim, Germany
| | - Walter Klepetko
- Department of Cardiothoracic Surgery, Medical University of Vienna, Vienna, Austria
| | - Thomas J Hoelzenbein
- Department of Vascular and Endovascular Surgery, Paracelsus Medical University, Salzburg, Austria
| | - Klaus T Preissner
- Institute for Biochemistry, Medical School, Justus-Liebig-University, Giessen, Germany
| | - Irene M Lang
- Department of Cardiology, Medical University of Vienna, Vienna, Austria
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78
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Ni NC, Ballantyne LL, Mewburn JD, Funk CD. Multiple-site activation of the cysteinyl leukotriene receptor 2 is required for exacerbation of ischemia/reperfusion injury. Arterioscler Thromb Vasc Biol 2013; 34:321-30. [PMID: 24285579 DOI: 10.1161/atvbaha.113.302536] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
OBJECTIVE Transgenic overexpression of the human cysteinyl leukotriene receptor 2 (CysLT2R) in murine endothelium exacerbates vascular permeability and ischemia/reperfusion injury. Here, we explore the underlying mechanisms of CysLT2R activation-mediated inflammation and delineate the relative contributions of endogenous murine CysLT2R and the transgene-derived receptor. APPROACH AND RESULTS We created a novel mouse with only endothelial-expressed CysLT2R (endothelium-targeted overexpression mice [EC]/CysLT2R-knockout mice [KO]) by crossing EC with KO to dissect the role of endothelial CysLT2R in tissue injury. Surprisingly, we discovered that damage in EC/KO mice was not elevated (24% versus 47% EC) after ischemia/reperfusion. We examined vascular permeability and leukocyte recruitment/rolling responses in the cremaster vasculature after cysteinyl leukotriene (cysLT) stimulation. Mice possessing transgenic endothelial CysLT2R overexpression, whether EC or EC/KO, when stimulated with cysLTs, exhibited vascular hyperpermeability, declining leukocyte flux, and a transient increase in slow-rolling leukocyte fraction. Mice lacking endogenous CysLT2R (both KO [20 ± 3 cells/min] EC/KO [24 ± 3]) showed lower-rolling leukocyte flux versus wild-type (38 ± 6) and EC (35 ± 6) mice under unstimulated conditions. EC/KO mice differed from EC counterparts in that vascular hyperpermeability was not present in the absence of exogenous cysLTs. CONCLUSIONS These results indicate that endothelial and nonendothelial CysLT2R niches have separate roles in mediating inflammatory responses. Endothelial receptor activation results in increased vascular permeability and leukocyte slow-rolling, facilitating leukocyte transmigration. Nonendothelial receptors, likely located on resident/circulating leukocytes, facilitate endothelial receptor activation and leukocyte transit. Activation of both receptor populations is required for injury exacerbation.
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Affiliation(s)
- Nathan C Ni
- From the Department of Biomedical and Molecular Sciences (N.C.N., L.L.B., C.D.F.) and Cancer Research Institute (J.D.M.), Queen's University, Kingston, ON, Canada
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79
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Emanueli C, Kränkel N. You can teach an old dog new tricks: angiopoietin-1 instructs Tie2(pos) myeloid cells to promote neovascularization in ischemic limbs. EMBO Mol Med 2013; 5:802-4. [PMID: 23737442 PMCID: PMC3779443 DOI: 10.1002/emmm.201302794] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Affiliation(s)
- Costanza Emanueli
- Laboratory of Vascular Pathology and Regeneration, School of Clinical Sciences, University of Bristol, Bristol, United Kingdom.
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80
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Hamm A, Veschini L, Takeda Y, Costa S, Delamarre E, Squadrito ML, Henze AT, Wenes M, Serneels J, Pucci F, Roncal C, Anisimov A, Alitalo K, De Palma M, Mazzone M. PHD2 regulates arteriogenic macrophages through TIE2 signalling. EMBO Mol Med 2013; 5:843-57. [PMID: 23616286 PMCID: PMC3779447 DOI: 10.1002/emmm.201302695] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2013] [Revised: 03/09/2013] [Accepted: 03/12/2013] [Indexed: 01/26/2023] Open
Abstract
Occlusion of the main arterial route redirects blood flow to the collateral circulation. We previously reported that macrophages genetically modified to express low levels of prolyl hydroxylase domain protein 2 (PHD2) display an arteriogenic phenotype, which promotes the formation of collateral vessels and protects the skeletal muscle from ischaemic necrosis. However, the molecular mechanisms underlying this process are unknown. Here, we demonstrate that femoral artery occlusion induces a switch in macrophage phenotype through angiopoietin-1 (ANG1)-mediated Phd2 repression. ANG blockade by a soluble trap prevented the downregulation of Phd2 expression in macrophages and their phenotypic switch, thus inhibiting collateral growth. ANG1-dependent Phd2 repression initiated a feed-forward loop mediated by the induction of the ANG receptor TIE2 in macrophages. Gene silencing and cell depletion strategies demonstrate that TIE2 induction in macrophages is required to promote their proarteriogenic functions, enabling collateral vessel formation following arterial obstruction. These results indicate an indispensable role for TIE2 in sustaining in situ programming of macrophages to a proarteriogenic, M2-like phenotype, suggesting possible new venues for the treatment of ischaemic disorders.
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Affiliation(s)
- Alexander Hamm
- Laboratory of Molecular Oncology and Angiogenesis, Vesalius Research Center, VIB, Leuven, Belgium
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