1
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Radloff K, Gutbier B, Dunne CM, Moradian H, Schwestka M, Gossen M, Ahrens K, Kneller L, Wang Y, Moga A, Gkionis L, Keil O, Fehring V, Tondera D, Giese K, Santel A, Kaufmann J, Witzenrath M. Cationic LNP-formulated mRNA expressing Tie2-agonist in the lung endothelium prevents pulmonary vascular leakage. MOLECULAR THERAPY. NUCLEIC ACIDS 2023; 34:102068. [PMID: 38034031 PMCID: PMC10682670 DOI: 10.1016/j.omtn.2023.102068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Accepted: 10/25/2023] [Indexed: 12/02/2023]
Abstract
Dysfunction of endothelial cells (ECs) lining the inner surface of blood vessels are causative for a number of diseases. Hence, the ability to therapeutically modulate gene expression within ECs is of high therapeutic value in treating diseases such as those associated with lung edema. mRNAs formulated with lipid nanoparticles (LNPs) have emerged as a new drug modality to induce transient protein expression for modulating disease-relevant signal transduction pathways. In the study presented here, we tested the effect of a novel synthetic, nucleoside-modified mRNA encoding COMP-Ang1 (mRNA-76) formulated into a cationic LNP on attenuating inflammation-induced vascular leakage. After intravenous injection, the respective mRNA was found to be delivered almost exclusively to the ECs of the lung, while sparing other vascular beds and bypassing the liver. The mode of action of mRNA-76, such as its activation of the Tie2 signal transduction pathway, was tested by pharmacological studies in vitro and in vivo in respective mouse models. mRNA-76 was found to prevent lung vascular leakage/lung edema as well as neutrophil infiltration in a lipopolysaccharide-challenging model.
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Affiliation(s)
| | - Birgitt Gutbier
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Infectious Diseases, Respiratory Medicine, and Critical Care, 10117 Berlin, Germany
| | | | - Hanieh Moradian
- Institute of Active Polymers, Helmholtz-Zentrum Hereon, 14513 Teltow, Germany
- Berlin-Brandenburg Center for Regenerative Therapies (BCRT) Charité Campus Virchow Klinikum, 13353 Berlin, Germany
| | - Marko Schwestka
- Institute of Active Polymers, Helmholtz-Zentrum Hereon, 14513 Teltow, Germany
- Berlin-Brandenburg Center for Regenerative Therapies (BCRT) Charité Campus Virchow Klinikum, 13353 Berlin, Germany
| | - Manfred Gossen
- Institute of Active Polymers, Helmholtz-Zentrum Hereon, 14513 Teltow, Germany
- Berlin-Brandenburg Center for Regenerative Therapies (BCRT) Charité Campus Virchow Klinikum, 13353 Berlin, Germany
| | - Katharina Ahrens
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Infectious Diseases, Respiratory Medicine, and Critical Care, 10117 Berlin, Germany
| | - Laura Kneller
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Infectious Diseases, Respiratory Medicine, and Critical Care, 10117 Berlin, Germany
| | - Yadong Wang
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Infectious Diseases, Respiratory Medicine, and Critical Care, 10117 Berlin, Germany
| | - Akanksha Moga
- Pantherna Therapeutics GmbH, 16761 Hennigsdorf, Germany
| | | | - Oliver Keil
- Pantherna Therapeutics GmbH, 16761 Hennigsdorf, Germany
| | | | | | - Klaus Giese
- Pantherna Therapeutics GmbH, 16761 Hennigsdorf, Germany
| | - Ansgar Santel
- Pantherna Therapeutics GmbH, 16761 Hennigsdorf, Germany
| | - Jörg Kaufmann
- Pantherna Therapeutics GmbH, 16761 Hennigsdorf, Germany
| | - Martin Witzenrath
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Infectious Diseases, Respiratory Medicine, and Critical Care, 10117 Berlin, Germany
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2
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Xiaolin X, Xiaozhi L, Guoping H, Hongwei L, Jinkuo G, Xiyun B, Zhen T, Xiaofang M, Yanxia L, Na X, Chunyan Z, Rui G, Kuan W, Cheng Z, Cuancuan W, Mingyong L, Xinping D. Overfit deep neural network for predicting drug-target interactions. iScience 2023; 26:107646. [PMID: 37680476 PMCID: PMC10480310 DOI: 10.1016/j.isci.2023.107646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Revised: 06/28/2023] [Accepted: 08/11/2023] [Indexed: 09/09/2023] Open
Abstract
Drug-target interactions (DTIs) prediction is an important step in drug discovery. As traditional biological experiments or high-throughput screening are high cost and time-consuming, many deep learning models have been developed. Overfitting must be avoided when training deep learning models. We propose a simple framework, called OverfitDTI, for DTI prediction. In OverfitDTI, a deep neural network (DNN) model is overfit to sufficiently learn the features of the chemical space of drugs and the biological space of targets. The weights of trained DNN model form an implicit representation of the nonlinear relationship between drugs and targets. Performance of OverfitDTI on three public datasets showed that the overfit DNN models fit the nonlinear relationship with high accuracy. We identified fifteen compounds that interacted with TEK, a receptor tyrosine kinase contributing to vascular homeostasis, and the predicted AT9283 and dorsomorphin were experimentally demonstrated as inhibitors of TEK in human umbilical vein endothelial cells (HUVECs).
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Affiliation(s)
- Xiao Xiaolin
- Department of Cardiology, Tianjin Fifth Central Hospital, Tianjin, China
- Tianjin Key Laboratory of Epigenetics for Organ Development of Premature Infants, Tianjin Fifth Central Hospital, Tianjin, China
- Central Laboratory, Tianjin Fifth Central Hospital, Tianjin, China
| | - Liu Xiaozhi
- Tianjin Key Laboratory of Epigenetics for Organ Development of Premature Infants, Tianjin Fifth Central Hospital, Tianjin, China
- Central Laboratory, Tianjin Fifth Central Hospital, Tianjin, China
| | - He Guoping
- Geriatrics Department, Traditional Chinese Medicine Hospital of Binhai New Area, Tianjin, China
| | - Liu Hongwei
- School of Clinical Medicine, North China University of Science and Technology, Tangshan, Hebei, China
- Department of Anesthesiology, Tangshan Maternal and Child Health Hospital, Tangshan, Hebei, China
| | - Guo Jinkuo
- Tianjin Key Laboratory of Epigenetics for Organ Development of Premature Infants, Tianjin Fifth Central Hospital, Tianjin, China
- College of Food Science and Engineering, Tianjin University of Science & Technology, Tianjin, China
| | - Bian Xiyun
- Tianjin Key Laboratory of Epigenetics for Organ Development of Premature Infants, Tianjin Fifth Central Hospital, Tianjin, China
- Central Laboratory, Tianjin Fifth Central Hospital, Tianjin, China
| | - Tian Zhen
- Deepwater Technology Research Institute, China National Offshore Oil Corporation, Tianjin, China
| | - Ma Xiaofang
- Tianjin Key Laboratory of Epigenetics for Organ Development of Premature Infants, Tianjin Fifth Central Hospital, Tianjin, China
- Central Laboratory, Tianjin Fifth Central Hospital, Tianjin, China
| | - Li Yanxia
- Tianjin Key Laboratory of Epigenetics for Organ Development of Premature Infants, Tianjin Fifth Central Hospital, Tianjin, China
- Central Laboratory, Tianjin Fifth Central Hospital, Tianjin, China
| | - Xue Na
- Tianjin Key Laboratory of Epigenetics for Organ Development of Premature Infants, Tianjin Fifth Central Hospital, Tianjin, China
- Central Laboratory, Tianjin Fifth Central Hospital, Tianjin, China
| | - Zhang Chunyan
- Tianjin Key Laboratory of Epigenetics for Organ Development of Premature Infants, Tianjin Fifth Central Hospital, Tianjin, China
- Central Laboratory, Tianjin Fifth Central Hospital, Tianjin, China
| | - Gao Rui
- Tianjin Key Laboratory of Epigenetics for Organ Development of Premature Infants, Tianjin Fifth Central Hospital, Tianjin, China
| | - Wang Kuan
- Department of Cardiology, Tianjin Fifth Central Hospital, Tianjin, China
| | - Zhang Cheng
- Department of Cardiology, Tianjin Fifth Central Hospital, Tianjin, China
| | - Wang Cuancuan
- Department of Cardiology, Tianjin Fifth Central Hospital, Tianjin, China
| | - Liu Mingyong
- Tianjin Key Laboratory of Epigenetics for Organ Development of Premature Infants, Tianjin Fifth Central Hospital, Tianjin, China
- Department of Urology, Tianjin Fifth Central Hospital, Tianjin, China
| | - Du Xinping
- Department of Cardiology, Tianjin Fifth Central Hospital, Tianjin, China
- Tianjin Key Laboratory of Epigenetics for Organ Development of Premature Infants, Tianjin Fifth Central Hospital, Tianjin, China
- College of Food Science and Engineering, Tianjin University of Science & Technology, Tianjin, China
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3
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Park HR, Shiva A, Cummings P, Kim S, Kim S, Lee E, Leong A, Chowdhury S, Shawber C, Carvajal R, Thurston G, An JY, Lund AW, Yang HW, Kim M. Angiopoietin-2-Dependent Spatial Vascular Destabilization Promotes T-cell Exclusion and Limits Immunotherapy in Melanoma. Cancer Res 2023; 83:1968-1983. [PMID: 37093870 PMCID: PMC10267677 DOI: 10.1158/0008-5472.can-22-2838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 01/13/2023] [Accepted: 04/18/2023] [Indexed: 04/25/2023]
Abstract
T-cell position in the tumor microenvironment determines the probability of target encounter and tumor killing. CD8+ T-cell exclusion from the tumor parenchyma is associated with poor response to immunotherapy, and yet the biology that underpins this distinct pattern remains unclear. Here we show that the vascular destabilizing factor angiopoietin-2 (ANGPT2) causes compromised vascular integrity in the tumor periphery, leading to impaired T-cell infiltration to the tumor core. The spatial regulation of ANGPT2 in whole tumor cross-sections was analyzed in conjunction with T-cell distribution, vascular integrity, and response to immunotherapy in syngeneic murine melanoma models. T-cell exclusion was associated with ANGPT2 upregulation and elevated vascular leakage at the periphery of human and murine melanomas. Both pharmacologic and genetic blockade of ANGPT2 promoted CD8+ T-cell infiltration into the tumor core, exerting antitumor effects. Importantly, the reversal of T-cell exclusion following ANGPT2 blockade not only enhanced response to anti-PD-1 immune checkpoint blockade therapy in immunogenic, therapy-responsive mouse melanomas, but it also rendered nonresponsive tumors susceptible to immunotherapy. Therapeutic response after ANGPT2 blockade, driven by improved CD8+ T-cell infiltration to the tumor core, coincided with spatial TIE2 signaling activation and increased vascular integrity at the tumor periphery where endothelial expression of adhesion molecules was reduced. These data highlight ANGPT2/TIE2 signaling as a key mediator of T-cell exclusion and a promising target to potentiate immune checkpoint blockade efficacy in melanoma. SIGNIFICANCE ANGPT2 limits the efficacy of immunotherapy by inducing vascular destabilization at the tumor periphery to promote T-cell exclusion.
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Affiliation(s)
- Ha-Ram Park
- Department of Pathology and Cell Biology, Columbia University Irving Medical Center, New York, New York
| | - Anahita Shiva
- Department of Pathology and Cell Biology, Columbia University Irving Medical Center, New York, New York
| | - Portia Cummings
- Department of Pathology and Cell Biology, Columbia University Irving Medical Center, New York, New York
| | - Seoyeon Kim
- School of Biosystems and Biomedical Sciences, College of Health Science, Korea University, Seoul, Korea
| | - Sungsoo Kim
- Department of Pathology and Cell Biology, Columbia University Irving Medical Center, New York, New York
| | - Eunhyeong Lee
- Department of Pathology and Cell Biology, Columbia University Irving Medical Center, New York, New York
| | - Alessandra Leong
- Department of Pathology and Cell Biology, Columbia University Irving Medical Center, New York, New York
| | - Subrata Chowdhury
- Department of Pathology and Cell Biology, Columbia University Irving Medical Center, New York, New York
| | - Carrie Shawber
- Department of Obstetrics and Gynecology, Columbia University Irving Medical Center, New York, New York
| | - Richard Carvajal
- Department of Medicine, Columbia University Irving Medical Center, New York, New York
| | | | - Joon-Yong An
- School of Biosystems and Biomedical Sciences, College of Health Science, Korea University, Seoul, Korea
| | - Amanda W. Lund
- Ronald O. Perelman Department of Dermatology, NYU Grossman School of Medicine, NYU Langone Health, New York, New York
| | - Hee Won Yang
- Department of Pathology and Cell Biology, Columbia University Irving Medical Center, New York, New York
| | - Minah Kim
- Department of Pathology and Cell Biology, Columbia University Irving Medical Center, New York, New York
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4
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Agard NJ, Zhang G, Ridgeway J, Dicara DM, Chu PY, Ohri R, Sanowar S, Vernes JM, Chi H, Zhang J, Holz E, Paluch M, He G, Benson Y, Zhang J, Chan P, Tang N, Javale P, Wilson B, Barrett K, Rowntree RK, Hang J, Meng YG, Hass P, Fuh G, Piskol R, Bantseev V, Loyet KM, Tran JC, Wu C, Indjeian VB, Shivva V, Yan M. Direct Tie2 Agonists Stabilize Vasculature for the Treatment of Diabetic Macular Edema. Transl Vis Sci Technol 2022; 11:27. [PMID: 36255358 PMCID: PMC9587485 DOI: 10.1167/tvst.11.10.27] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Purpose Diabetic macular edema (DME) is the leading cause of vision loss and blindness among working-age adults. Although current intravitreal anti-vascular endothelial growth factor (VEGF) therapies improve vision for many patients with DME, approximately half do not achieve the visual acuity required to drive. We therefore sought additional approaches to resolve edema and improve vision for these patients. Methods We explored direct agonists of Tie2, a receptor known to stabilize vasculature and prevent leakage. We identified a multivalent PEG–Fab conjugate, Tie2.1-hexamer, that oligomerizes Tie2 and drives receptor activation and characterized its activities in vitro and in vivo. Results Tie2.1-hexamer normalized and stabilized intercellular junctions of stressed endothelial cell monolayers in vitro, suppressed vascular leak in mice under conditions where anti-VEGF alone was ineffective, and demonstrated extended ocular exposure and robust pharmacodynamic responses in non-human primates. Conclusions Tie2.1-hexamer directly activates the Tie2 pathway, reduces vascular leak, and is persistent within the vitreal humor. Translational Relevance Our study presents a promising potential therapeutic for the treatment of DME.
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Affiliation(s)
- Nicholas J Agard
- Genentech Research and Early Development, South San Francisco, CA, USA
| | - Gu Zhang
- Genentech Research and Early Development, South San Francisco, CA, USA
| | - John Ridgeway
- Genentech Research and Early Development, South San Francisco, CA, USA
| | - Danielle M Dicara
- Genentech Research and Early Development, South San Francisco, CA, USA
| | - Phillip Y Chu
- Genentech Research and Early Development, South San Francisco, CA, USA
| | - Rachana Ohri
- Genentech Research and Early Development, South San Francisco, CA, USA
| | - Sarah Sanowar
- Genentech Research and Early Development, South San Francisco, CA, USA
| | | | - Hannah Chi
- Genentech Research and Early Development, South San Francisco, CA, USA
| | - Jiameng Zhang
- Genentech Research and Early Development, South San Francisco, CA, USA
| | - Emily Holz
- Genentech Research and Early Development, South San Francisco, CA, USA
| | - Maciej Paluch
- Genentech Research and Early Development, South San Francisco, CA, USA
| | - Guannan He
- Genentech Research and Early Development, South San Francisco, CA, USA
| | - Yingjia Benson
- Genentech Research and Early Development, South San Francisco, CA, USA
| | - Jianhuan Zhang
- Genentech Research and Early Development, South San Francisco, CA, USA
| | - Pamela Chan
- Genentech Research and Early Development, South San Francisco, CA, USA
| | - Nga Tang
- Genentech Research and Early Development, South San Francisco, CA, USA
| | - Prachi Javale
- Genentech Research and Early Development, South San Francisco, CA, USA
| | - Blair Wilson
- Genentech Research and Early Development, South San Francisco, CA, USA
| | - Kathy Barrett
- Genentech Research and Early Development, South San Francisco, CA, USA
| | | | - Julie Hang
- Genentech Research and Early Development, South San Francisco, CA, USA
| | - Y Gloria Meng
- Genentech Research and Early Development, South San Francisco, CA, USA
| | - Phil Hass
- Genentech Research and Early Development, South San Francisco, CA, USA
| | - Germaine Fuh
- Genentech Research and Early Development, South San Francisco, CA, USA
| | - Robert Piskol
- Genentech Research and Early Development, South San Francisco, CA, USA
| | - Vladimir Bantseev
- Genentech Research and Early Development, South San Francisco, CA, USA
| | - Kelly M Loyet
- Genentech Research and Early Development, South San Francisco, CA, USA
| | - John C Tran
- Genentech Research and Early Development, South San Francisco, CA, USA
| | - Cong Wu
- Genentech Research and Early Development, South San Francisco, CA, USA
| | - Vahan B Indjeian
- Genentech Research and Early Development, South San Francisco, CA, USA
| | - Vittal Shivva
- Genentech Research and Early Development, South San Francisco, CA, USA
| | - Minhong Yan
- Genentech Research and Early Development, South San Francisco, CA, USA
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5
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Brassinin Promotes the Degradation of Tie2 and FGFR1 in Endothelial Cells and Inhibits Triple-Negative Breast Cancer Angiogenesis. Cancers (Basel) 2022; 14:cancers14143540. [PMID: 35884601 PMCID: PMC9318525 DOI: 10.3390/cancers14143540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 07/19/2022] [Accepted: 07/19/2022] [Indexed: 11/24/2022] Open
Abstract
Simple Summary Brassinin is a natural compound enriched in several commonly consumed vegetables, such as broccoli and cabbages. It shows potent anti-cancer activity against several cancers. However, its effects on triple-negative breast cancer (TNBC), an aggressive subtype with limited treatment options, remain elusive so far. Therefore, we investigated the effects of brassinin on TNBC angiogenesis and growth. Our results demonstrate that brassinin inhibits TNBC growth preferentially through inhibiting the angiogenic activity of endothelial cells (ECs). Additional in-vitro analyses revealed that this effect may be mediated by brassinin-stimulated degradation of two pivotal angiogenesis-related receptors in ECs: Tie2 and fibroblast growth factor receptor 1. These findings provide novel insights into the cellular and molecular mechanisms underlying the anti-cancer activity of brassinin and indicate that this phytochemical may be a promising lead compound or drug candidate for TNBC treatment. Abstract Brassinin, a phytoalexin derived from cruciferous vegetables, has been reported to exhibit anti-cancer activity in multiple cancer types. However, its effects on triple-negative breast cancer (TNBC) development and the underlying mechanisms have not been elucidated so far. In this study, we demonstrated in vitro that brassinin preferentially reduces the viability of endothelial cells (ECs) when compared to other cell types of the tumor microenvironment, including TNBC cells, pericytes, and fibroblasts. Moreover, brassinin at non-cytotoxic doses significantly suppressed the proliferation, migration, tube formation, and spheroid sprouting of ECs. It also efficiently inhibited angiogenesis in an ex-vivo aortic ring assay and an in-vivo Matrigel plug assay. Daily intraperitoneal injection of brassinin significantly reduced tumor size, microvessel density, as well as the perfusion of tumor microvessels in a dorsal skinfold chamber model of TNBC. Mechanistic analyses showed that brassinin selectively stimulates the degradation of Tie2 and fibroblast growth factor receptor 1 in ECs, leading to the down-regulation of the AKT and extracellular signal-regulated kinase pathways. These findings demonstrate a preferential and potent anti-angiogenic activity of brassinin, which may be the main mechanism of its anti-tumor action. Accordingly, this phytochemical represents a promising candidate for the future anti-angiogenic treatment of TNBC.
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6
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Pattern of tamoxifen-induced Tie2 deletion in endothelial cells in mature blood vessels using endo SCL-Cre-ERT transgenic mice. PLoS One 2022; 17:e0268986. [PMID: 35675336 PMCID: PMC9176780 DOI: 10.1371/journal.pone.0268986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Accepted: 04/13/2022] [Indexed: 12/15/2022] Open
Abstract
Tyrosine-protein kinase receptor Tie2, also known as Tunica interna Endothelial cell Kinase or TEK plays a prominent role in endothelial responses to angiogenic and inflammatory stimuli. Here we generated a novel inducible Tie2 knockout mouse model, which targets mature (micro)vascular endothelium, enabling the study of the organ-specific contribution of Tie2 to these responses. Mice with floxed Tie2 exon 9 alleles (Tie2floxed/floxed) were crossed with end-SCL-Cre-ERT transgenic mice, generating offspring in which Tie2 exon 9 is deleted in the endothelial compartment upon tamoxifen-induced activation of Cre-recombinase (Tie2ΔE9). Successful deletion of Tie2 exon 9 in kidney, lung, heart, aorta, and liver, was accompanied by a heterogeneous, organ-dependent reduction in Tie2 mRNA and protein expression. Microvascular compartment-specific reduction in Tie2 mRNA and protein occurred in arterioles of all studied organs, in renal glomeruli, and in lung capillaries. In kidney, lung, and heart, reduced Tie2 expression was accompanied by a reduction in Tie1 mRNA expression. The heterogeneous, organ- and microvascular compartment-dependent knockout pattern of Tie2 in the Tie2floxed/floxed;end-SCL-Cre-ERT mouse model suggests that future studies using similar knockout strategies should include a meticulous analysis of the knockout extent of the gene of interest, prior to studying its role in pathological conditions, so that proper conclusions can be drawn.
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7
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Luxen M, van Meurs M, Molema G. Unlocking the Untapped Potential of Endothelial Kinase and Phosphatase Involvement in Sepsis for Drug Treatment Design. Front Immunol 2022; 13:867625. [PMID: 35634305 PMCID: PMC9136877 DOI: 10.3389/fimmu.2022.867625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Accepted: 03/28/2022] [Indexed: 11/29/2022] Open
Abstract
Sepsis is a devastating clinical condition that can lead to multiple organ failure and death. Despite advancements in our understanding of molecular mechanisms underlying sepsis and sepsis-associated multiple organ failure, no effective therapeutic treatment to directly counteract it has yet been established. The endothelium is considered to play an important role in sepsis. This review highlights a number of signal transduction pathways involved in endothelial inflammatory activation and dysregulated endothelial barrier function in response to sepsis conditions. Within these pathways – NF-κB, Rac1/RhoA GTPases, AP-1, APC/S1P, Angpt/Tie2, and VEGF/VEGFR2 – we focus on the role of kinases and phosphatases as potential druggable targets for therapeutic intervention. Animal studies and clinical trials that have been conducted for this purpose are discussed, highlighting reasons why they might not have resulted in the expected outcomes, and which lessons can be learned from this. Lastly, opportunities and challenges that sepsis and sepsis-associated multiple organ failure research are currently facing are presented, including recommendations on improved experimental design to increase the translational power of preclinical research to the clinic.
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Affiliation(s)
- Matthijs Luxen
- Department of Pathology and Medical Biology, Medical Biology Section, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
- Department of Critical Care, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
- *Correspondence: Matthijs Luxen,
| | - Matijs van Meurs
- Department of Pathology and Medical Biology, Medical Biology Section, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
- Department of Critical Care, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Grietje Molema
- Department of Pathology and Medical Biology, Medical Biology Section, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
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8
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Karabid NM, Wiedemann T, Gulde S, Mohr H, Segaran RC, Geppert J, Rohm M, Vitale G, Gaudenzi G, Dicitore A, Ankerst DP, Chen Y, Braren R, Kaissis G, Schilling F, Schillmaier M, Eisenhofer G, Herzig S, Roncaroli F, Honegger JB, Pellegata NS. Angpt2/Tie2 autostimulatory loop controls tumorigenesis. EMBO Mol Med 2022; 14:e14364. [PMID: 35266635 PMCID: PMC9081903 DOI: 10.15252/emmm.202114364] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 02/04/2022] [Accepted: 02/08/2022] [Indexed: 12/27/2022] Open
Abstract
Invasive nonfunctioning (NF) pituitary neuroendocrine tumors (PitNETs) are non‐resectable neoplasms associated with frequent relapses and significant comorbidities. As the current therapies of NF‐PitNETs often fail, new therapeutic targets are needed. The observation that circulating angiopoietin‐2 (ANGPT2) is elevated in patients with NF‐PitNET and correlates with tumor aggressiveness prompted us to investigate the ANGPT2/TIE2 axis in NF‐PitNETs in the GH3 PitNET cell line, primary human NF‐PitNET cells, xenografts in zebrafish and mice, and in MENX rats, the only autochthonous NF‐PitNET model. We show that PitNET cells express a functional TIE2 receptor and secrete bioactive ANGPT2, which promotes, besides angiogenesis, tumor cell growth in an autocrine and paracrine fashion. ANGPT2 stimulation of TIE2 in tumor cells activates downstream cell proliferation signals, as previously demonstrated in endothelial cells (ECs). Tie2 gene deletion blunts PitNETs growth in xenograft models, and pharmacological inhibition of Angpt2/Tie2 signaling antagonizes PitNETs in primary cell cultures, tumor xenografts in mice, and in MENX rats. Thus, the ANGPT2/TIE2 axis provides an exploitable therapeutic target in NF‐PitNETs and possibly in other tumors expressing ANGPT2/TIE2. The ability of tumor cells to coopt angiogenic signals classically viewed as EC‐specific expands our view on the microenvironmental cues that are essential for tumor progression.
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Affiliation(s)
- Ninelia Minaskan Karabid
- Institute for Diabetes and Cancer, Helmholtz Zentrum München, Neuherberg, Germany.,Joint Heidelberg-IDC Translational Diabetes Program, Heidelberg University Hospital, Heidelberg, Germany
| | - Tobias Wiedemann
- Institute for Diabetes and Cancer, Helmholtz Zentrum München, Neuherberg, Germany.,Joint Heidelberg-IDC Translational Diabetes Program, Heidelberg University Hospital, Heidelberg, Germany
| | - Sebastian Gulde
- Institute for Diabetes and Cancer, Helmholtz Zentrum München, Neuherberg, Germany.,Joint Heidelberg-IDC Translational Diabetes Program, Heidelberg University Hospital, Heidelberg, Germany
| | - Hermine Mohr
- Institute for Diabetes and Cancer, Helmholtz Zentrum München, Neuherberg, Germany.,Joint Heidelberg-IDC Translational Diabetes Program, Heidelberg University Hospital, Heidelberg, Germany
| | - Renu Chandra Segaran
- Institute for Diabetes and Cancer, Helmholtz Zentrum München, Neuherberg, Germany.,Joint Heidelberg-IDC Translational Diabetes Program, Heidelberg University Hospital, Heidelberg, Germany
| | - Julia Geppert
- Institute for Diabetes and Cancer, Helmholtz Zentrum München, Neuherberg, Germany.,Joint Heidelberg-IDC Translational Diabetes Program, Heidelberg University Hospital, Heidelberg, Germany
| | - Maria Rohm
- Institute for Diabetes and Cancer, Helmholtz Zentrum München, Neuherberg, Germany.,Joint Heidelberg-IDC Translational Diabetes Program, Heidelberg University Hospital, Heidelberg, Germany
| | - Giovanni Vitale
- Istituto Auxologico Italiano IRCCS, Laboratory of Geriatric and Oncologic Neuroendocrinology Research, Cusano Milanino, Milan, Italy.,Department of Medical Biotechnology and Translational Medicine, University of Milan, Milan, Italy
| | - Germano Gaudenzi
- Istituto Auxologico Italiano IRCCS, Laboratory of Geriatric and Oncologic Neuroendocrinology Research, Cusano Milanino, Milan, Italy
| | - Alessandra Dicitore
- Department of Medical Biotechnology and Translational Medicine, University of Milan, Milan, Italy
| | | | - Yiyao Chen
- Department of Mathematics, Technical University Munich, Garching, Germany
| | - Rickmer Braren
- Institute for Diagnostic and Interventional Radiology, Klinikum Rechts der Isar, Technical University Munich, Munich, Germany
| | - Georg Kaissis
- Institute for Diagnostic and Interventional Radiology, Klinikum Rechts der Isar, Technical University Munich, Munich, Germany
| | - Franz Schilling
- Department of Nuclear Medicine, Klinikum rechts der Isar, Technical University Munich, Munich, Germany
| | - Mathias Schillmaier
- Department of Nuclear Medicine, Klinikum rechts der Isar, Technical University Munich, Munich, Germany
| | - Graeme Eisenhofer
- Institute of Clinical Chemistry and Laboratory Medicine, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Stephan Herzig
- Institute for Diabetes and Cancer, Helmholtz Zentrum München, Neuherberg, Germany.,Joint Heidelberg-IDC Translational Diabetes Program, Heidelberg University Hospital, Heidelberg, Germany
| | - Federico Roncaroli
- Division of Neuroscience and Experimental Psychology, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
| | - Jürgen B Honegger
- Department of Neurosurgery, Eberhard Karls University Tübingen, Tübingen, Germany
| | - Natalia S Pellegata
- Institute for Diabetes and Cancer, Helmholtz Zentrum München, Neuherberg, Germany.,Joint Heidelberg-IDC Translational Diabetes Program, Heidelberg University Hospital, Heidelberg, Germany
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9
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Zhang Y, Kontos CD, Annex BH, Popel AS. A systems biology model of junctional localization and downstream signaling of the Ang-Tie signaling pathway. NPJ Syst Biol Appl 2021; 7:34. [PMID: 34417472 PMCID: PMC8379279 DOI: 10.1038/s41540-021-00194-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Accepted: 08/04/2021] [Indexed: 01/20/2023] Open
Abstract
The Ang–Tie signaling pathway is an important vascular signaling pathway regulating vascular growth and stability. Dysregulation in the pathway is associated with vascular dysfunction and numerous diseases that involve abnormal vascular permeability and endothelial cell inflammation. The understanding of the molecular mechanisms of the Ang–Tie pathway has been limited due to the complex reaction network formed by the ligands, receptors, and molecular regulatory mechanisms. In this study, we developed a mechanistic computational model of the Ang–Tie signaling pathway validated against experimental data. The model captures and reproduces the experimentally observed junctional localization and downstream signaling of the Ang–Tie signaling axis, as well as the time-dependent role of receptor Tie1. The model predicts that Tie1 modulates Tie2’s response to the context-dependent agonist Ang2 by junctional interactions. Furthermore, modulation of Tie1’s junctional localization, inhibition of Tie2 extracellular domain cleavage, and inhibition of VE-PTP are identified as potential molecular strategies for potentiating Ang2’s agonistic activity and rescuing Tie2 signaling in inflammatory endothelial cells.
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Affiliation(s)
- Yu Zhang
- Department of Biomedical Engineering, School of Medicine, Johns Hopkins University, Baltimore, MD, USA.
| | - Christopher D Kontos
- Department of Medicine, Division of Cardiology, Duke University Medical Center, Durham, NC, USA
| | - Brian H Annex
- Department of Medicine and the Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, GA, USA
| | - Aleksander S Popel
- Department of Biomedical Engineering, School of Medicine, Johns Hopkins University, Baltimore, MD, USA
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10
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Wang Y, Salvucci O, Ohnuki H, Tran AD, Ha T, Feng J, DiPrima M, Kwak H, Wang D, Yu Y, Kruhlak M, Tosato G. Targeting the SHP2 phosphatase promotes vascular damage and inhibition of tumor growth. EMBO Mol Med 2021; 13:e14089. [PMID: 34102002 PMCID: PMC8261520 DOI: 10.15252/emmm.202114089] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 04/26/2021] [Accepted: 05/04/2021] [Indexed: 12/15/2022] Open
Abstract
The tyrosine phosphatase SHP2 is oncogenic in cancers driven by receptor-tyrosine-kinases, and SHP2 inhibition reduces tumor growth. Here, we report that SHP2 is an essential promoter of endothelial cell survival and growth in the remodeling tumor vasculature. Using genetic and chemical approaches to inhibit SHP2 activity in endothelial cells, we show that SHP2 inhibits pro-apoptotic STAT3 and stimulates proliferative ERK1/2 signaling. Systemic SHP2 inhibition in mice bearing tumor types selected for SHP2-independent tumor cell growth promotes degeneration of the tumor vasculature and blood extravasation; reduces tumor vascularity and blood perfusion; and increases tumor necrosis. Reduction of tumor growth ensues, independent of SHP2 targeting in the tumor cells, blocking immune checkpoints, or recruiting macrophages. We also show that inhibiting the Angiopoietin/TIE2/AKT cascade magnifies the vascular and anti-tumor effects of SHP2 inhibition by blocking tumor endothelial AKT signaling, not a target of SHP2. Since the SHP2 and Ang2/TIE2 pathways are active in vascular endothelial cells of human melanoma and colon carcinoma, SHP2 inhibitors alone or with Ang2/TIE2 inhibitors hold promise to effectively target the tumor endothelium.
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Affiliation(s)
- Yuyi Wang
- Laboratory of Cellular OncologyCenter for Cancer ResearchNational Cancer InstituteNational Institutes of HealthBethesdaMDUSA
| | - Ombretta Salvucci
- Laboratory of Cellular OncologyCenter for Cancer ResearchNational Cancer InstituteNational Institutes of HealthBethesdaMDUSA
| | - Hidetaka Ohnuki
- Laboratory of Cellular OncologyCenter for Cancer ResearchNational Cancer InstituteNational Institutes of HealthBethesdaMDUSA
| | - Andy D Tran
- Center for Cancer Research Microscopy CoreLaboratory of Cancer Biology and GeneticsNational Cancer InstituteNational Institutes of HealthBethesdaMDUSA
| | - Taekyu Ha
- Laboratory of Cellular OncologyCenter for Cancer ResearchNational Cancer InstituteNational Institutes of HealthBethesdaMDUSA
| | - Jing‐Xin Feng
- Laboratory of Cellular OncologyCenter for Cancer ResearchNational Cancer InstituteNational Institutes of HealthBethesdaMDUSA
| | - Michael DiPrima
- Laboratory of Cellular OncologyCenter for Cancer ResearchNational Cancer InstituteNational Institutes of HealthBethesdaMDUSA
| | - Hyeongil Kwak
- Laboratory of Cellular OncologyCenter for Cancer ResearchNational Cancer InstituteNational Institutes of HealthBethesdaMDUSA
| | - Dunrui Wang
- Laboratory of Cellular OncologyCenter for Cancer ResearchNational Cancer InstituteNational Institutes of HealthBethesdaMDUSA
| | - Yanlin Yu
- Laboratory of Cancer Biology and GeneticsCenter for Cancer ResearchNational Cancer InstituteNational Institutes of HealthBethesdaMDUSA
| | - Michael Kruhlak
- Center for Cancer Research Microscopy CoreLaboratory of Cancer Biology and GeneticsNational Cancer InstituteNational Institutes of HealthBethesdaMDUSA
| | - Giovanna Tosato
- Laboratory of Cellular OncologyCenter for Cancer ResearchNational Cancer InstituteNational Institutes of HealthBethesdaMDUSA
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11
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González A, Alonso-González C, González-González A, Menéndez-Menéndez J, Cos S, Martínez-Campa C. Melatonin as an Adjuvant to Antiangiogenic Cancer Treatments. Cancers (Basel) 2021; 13:cancers13133263. [PMID: 34209857 PMCID: PMC8268559 DOI: 10.3390/cancers13133263] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 06/24/2021] [Accepted: 06/25/2021] [Indexed: 02/07/2023] Open
Abstract
Melatonin is a hormone with different functions, antitumor actions being one of the most studied. Among its antitumor mechanisms is its ability to inhibit angiogenesis. Melatonin shows antiangiogenic effects in several types of tumors. Combination of melatonin and chemotherapeutic agents have a synergistic effect inhibiting angiogenesis. One of the undesirable effects of chemotherapy is the induction of pro-angiogenic factors, whilst the addition of melatonin is able to overcome these undesirable effects. This protective effect of the pineal hormone against angiogenesis might be one of the mechanisms underlying its anticancer effect, explaining, at least in part, why melatonin administration increases the sensitivity of tumors to the inhibitory effects exerted by ordinary chemotherapeutic agents. Melatonin has the ability to turn cancer totally resistant to chemotherapeutic agents into a more sensitive chemotherapy state. Definitely, melatonin regulates the expression and/or activity of many factors involved in angiogenesis which levels are affected (either positively or negatively) by chemotherapeutic agents. In addition, the pineal hormone has been proposed as a radiosensitizer, increasing the oncostatic effects of radiation on tumor cells. This review serves as a synopsis of the interaction between melatonin and angiogenesis, and we will outline some antiangiogenic mechanisms through which melatonin sensitizes cancer cells to treatments, such as radiotherapy or chemotherapy.
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12
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He R, Wang Z, Shi W, Yu L, Xia H, Huang Z, Liu S, Zhao X, Xu Y, Yam JWP, Cui Y. Exosomes in hepatocellular carcinoma microenvironment and their potential clinical application value. Biomed Pharmacother 2021; 138:111529. [PMID: 34311529 DOI: 10.1016/j.biopha.2021.111529] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Revised: 03/15/2021] [Accepted: 03/17/2021] [Indexed: 02/06/2023] Open
Abstract
Hepatocellular carcinoma (HCC) has become a challenging disease in the world today. Due to the limitations on the current diagnosis and treatment as well as its high metastatic ability and high recurrence rate, HCC gradually becomes the second deadliest tumor. Exosomes are one of the types of cell-derived vesicles and can carry intracellular materials such as genetic materials, lipids, and proteins. In recent years, it has been verified that exosomes are linked to numerous physiological and pathological processes, including HCC. However, how exosomes affect HCC progression remains largely unknown. In this review, the exosome-mediated cellular material transfer between cells of different types in the HCC microenvironment and their effects on the behaviors and functions of recipient cells are studied. Furthermore, we also addressed the underlying molecular mechanisms. We believe that new light on the diagnosis of this cancer as well as its treatment strategies will be shed after a collation of literature in this area.
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Affiliation(s)
- Risheng He
- Department of Pancreatobiliary Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, China
| | - Zhongrui Wang
- Department of Pancreatobiliary Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, China
| | - Wenguang Shi
- Department of Pancreatobiliary Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, China
| | - Liang Yu
- Department of Pancreatobiliary Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, China
| | - Haoming Xia
- Department of Pancreatobiliary Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, China
| | - Ziyue Huang
- Department of Pancreatobiliary Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, China
| | - Shuqiang Liu
- Department of Pancreatobiliary Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, China
| | - Xudong Zhao
- Department of Pancreatobiliary Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, China
| | - Yi Xu
- Department of Pancreatobiliary Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, China.
| | - Judy Wai Ping Yam
- Department of Pathology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, 999077, Hong Kong.
| | - Yunfu Cui
- Department of Pancreatobiliary Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, China.
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13
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Zhou HJ, Qin L, Jiang Q, Murray KN, Zhang H, Li B, Lin Q, Graham M, Liu X, Grutzendler J, Min W. Caveolae-mediated Tie2 signaling contributes to CCM pathogenesis in a brain endothelial cell-specific Pdcd10-deficient mouse model. Nat Commun 2021; 12:504. [PMID: 33495460 PMCID: PMC7835246 DOI: 10.1038/s41467-020-20774-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Accepted: 12/16/2020] [Indexed: 12/12/2022] Open
Abstract
Cerebral cavernous malformations (CCMs) are vascular abnormalities that primarily occur in adulthood and cause cerebral hemorrhage, stroke, and seizures. CCMs are thought to be initiated by endothelial cell (EC) loss of any one of the three Ccm genes: CCM1 (KRIT1), CCM2 (OSM), or CCM3 (PDCD10). Here we report that mice with a brain EC-specific deletion of Pdcd10 (Pdcd10BECKO) survive up to 6-12 months and develop bona fide CCM lesions in all regions of brain, allowing us to visualize the vascular dynamics of CCM lesions using transcranial two-photon microscopy. This approach reveals that CCMs initiate from protrusion at the level of capillary and post-capillary venules with gradual dissociation of pericytes. Microvascular beds in lesions are hyper-permeable, and these disorganized structures present endomucin-positive ECs and α-smooth muscle actin-positive pericytes. Caveolae in the endothelium of Pdcd10BECKO lesions are drastically increased, enhancing Tie2 signaling in Ccm3-deficient ECs. Moreover, genetic deletion of caveolin-1 or pharmacological blockade of Tie2 signaling effectively normalizes microvascular structure and barrier function with attenuated EC-pericyte disassociation and CCM lesion formation in Pdcd10BECKO mice. Our study establishes a chronic CCM model and uncovers a mechanism by which CCM3 mutation-induced caveolae-Tie2 signaling contributes to CCM pathogenesis.
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MESH Headings
- Animals
- Apoptosis Regulatory Proteins/deficiency
- Apoptosis Regulatory Proteins/genetics
- Brain/metabolism
- Brain/pathology
- Brain/ultrastructure
- Caveolae/metabolism
- Caveolae/ultrastructure
- Cells, Cultured
- Disease Models, Animal
- Endothelial Cells/metabolism
- Hemangioma, Cavernous, Central Nervous System/genetics
- Hemangioma, Cavernous, Central Nervous System/metabolism
- Humans
- Mice, Knockout
- Mice, Transgenic
- Microscopy, Electron, Transmission
- Pericytes/metabolism
- Receptor, TIE-2/genetics
- Receptor, TIE-2/metabolism
- Signal Transduction
- Survival Analysis
- Mice
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Affiliation(s)
- Huanjiao Jenny Zhou
- Interdepartmental Program in Vascular Biology and Therapeutics, Department of Pathology, Yale University School of Medicine, New Haven, CT, USA.
| | - Lingfeng Qin
- Interdepartmental Program in Vascular Biology and Therapeutics, Department of Pathology, Yale University School of Medicine, New Haven, CT, USA
| | - Quan Jiang
- Interdepartmental Program in Vascular Biology and Therapeutics, Department of Pathology, Yale University School of Medicine, New Haven, CT, USA
| | - Katie N Murray
- Department of Neurobiology, Yale University School of Medicine, New Haven, CT, USA
| | - Haifeng Zhang
- Interdepartmental Program in Vascular Biology and Therapeutics, Department of Pathology, Yale University School of Medicine, New Haven, CT, USA
| | - Busu Li
- Interdepartmental Program in Vascular Biology and Therapeutics, Department of Pathology, Yale University School of Medicine, New Haven, CT, USA
| | - Qun Lin
- Interdepartmental Program in Vascular Biology and Therapeutics, Department of Pathology, Yale University School of Medicine, New Haven, CT, USA
| | - Morven Graham
- Department of Cell Biology, Yale University School of Medicine, New Haven, CT, USA
| | - Xinran Liu
- Department of Cell Biology, Yale University School of Medicine, New Haven, CT, USA
| | - Jaime Grutzendler
- Department of Neurobiology, Yale University School of Medicine, New Haven, CT, USA
| | - Wang Min
- Interdepartmental Program in Vascular Biology and Therapeutics, Department of Pathology, Yale University School of Medicine, New Haven, CT, USA.
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14
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Leong A, Kim M. The Angiopoietin-2 and TIE Pathway as a Therapeutic Target for Enhancing Antiangiogenic Therapy and Immunotherapy in Patients with Advanced Cancer. Int J Mol Sci 2020; 21:ijms21228689. [PMID: 33217955 PMCID: PMC7698611 DOI: 10.3390/ijms21228689] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2020] [Revised: 11/04/2020] [Accepted: 11/13/2020] [Indexed: 12/12/2022] Open
Abstract
Despite significant advances made in cancer treatment, the development of therapeutic resistance to anticancer drugs represents a major clinical problem that limits treatment efficacy for cancer patients. Herein, we focus on the response and resistance to current antiangiogenic drugs and immunotherapies and describe potential strategies for improved treatment outcomes. Antiangiogenic treatments that mainly target vascular endothelial growth factor (VEGF) signaling have shown efficacy in many types of cancer. However, drug resistance, characterized by disease recurrence, has limited therapeutic success and thus increased our urgency to better understand the mechanism of resistance to inhibitors of VEGF signaling. Moreover, cancer immunotherapies including immune checkpoint inhibitors (ICIs), which stimulate antitumor immunity, have also demonstrated a remarkable clinical benefit in the treatment of many aggressive malignancies. Nevertheless, the emergence of resistance to immunotherapies associated with an immunosuppressive tumor microenvironment has restricted therapeutic response, necessitating the development of better therapeutic strategies to increase treatment efficacy in patients. Angiopoietin-2 (ANG2), which binds to the receptor tyrosine kinase TIE2 in endothelial cells, is a cooperative driver of angiogenesis and vascular destabilization along with VEGF. It has been suggested in multiple preclinical studies that ANG2-mediated vascular changes contribute to the development and persistence of resistance to anti-VEGF therapy. Further, emerging evidence suggests a fundamental link between vascular abnormalities and tumor immune evasion, supporting the rationale for combination strategies of immunotherapy with antiangiogenic drugs. In this review, we discuss the recent mechanistic and clinical advances in targeting angiopoietin signaling, focusing on ANG2 inhibition, to enhance therapeutic efficacy of antiangiogenic and ICI therapies. In short, we propose that a better mechanistic understanding of ANG2-mediated vascular changes will provide insight into the significance of ANG2 in treatment response and resistance to current antiangiogenic and ICI therapies. These advances will ultimately improve therapeutic modalities for cancer treatment.
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15
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Xie JY, Wei JX, Lv LH, Han QF, Yang WB, Li GL, Wang PX, Wu SB, Duan JX, Zhuo WF, Liu PQ, Min J. Angiopoietin-2 induces angiogenesis via exosomes in human hepatocellular carcinoma. Cell Commun Signal 2020; 18:46. [PMID: 32183816 PMCID: PMC7077328 DOI: 10.1186/s12964-020-00535-8] [Citation(s) in RCA: 66] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Accepted: 02/13/2020] [Indexed: 12/12/2022] Open
Abstract
Background Hepatocellular carcinoma (HCC) is the most common primary liver cancer and is a highly vascularized solid tumor. Angiopoietin-2 (ANGPT2) has been described as an attractive target for antiangiogenic therapy. Exosomes are small extracellular vesicles secreted by most cell types and contribute to cell-to-cell communication by delivering functional cargo to recipient cells. The expression of ANGPT2 in tumor-derived exosomes remains unknown. Methods We detected the ANGPT2 expression in HCC-derived exosomes by immunoblotting, enzyme-linked immunosorbent assay and immunogold labeling, then observed exosomal ANGPT2 internalization and recycling by confocal laser scanning microscopy, co-immunoprecipitation and immunoblotting. We used two HCC cell lines (Hep3B and MHCC97H) to overexpress ANGPT2 by lentivirus infection or knockdown ANGPT2 by the CRISPR/Cas system, then isolated exosomes to coculture with human umbilical vein endothelial cells (HUVECs) and observed the angiogenesis by Matrigel microtubule formation assay, transwell migration assay, wound healing assay, cell counting kit-8 assay, immunoblotting and in vivo tumorigenesis assay. Results We found that HCC-derived exosomes carried ANGPT2 and delivered it into HUVECs by exosome endocytosis, this delivery led to a notable increase in angiogenesis by a Tie2-independent pathway. Concomitantly, we observed that HCC cell-secreted exosomal ANGPT2 was recycled by recipient HUVECs and might be reused. In addition, the CRISPR-Cas systems to knock down ANGPT2 significantly inhibited the angiogenesis induced by HCC cell-secreted exosomal ANGPT2, and obviously suppressed the epithelial-mesenchymal transition activation in HCC. Conclusions Taken together, these results reveal a novel pathway of tumor angiogenesis induced by HCC cell-secreted exosomal ANGPT2 that is different from the classic ANGPT2/Tie2 pathway. This way may be a potential therapeutic target for antiangiogenic therapy. Video Abstract
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Affiliation(s)
- Ji-Yan Xie
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-sen University, Guangzhou, 510120, China.,Department of Hepatobiliary Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, 510120, China
| | - Jin-Xing Wei
- Department of Hepatobiliary Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, 510120, China
| | - Li-Hong Lv
- Clinical Trial Institution of Pharmaceuticals, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, 510120, China
| | - Qing-Fang Han
- Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital of Zhengzhou University, No.1, Jianshedong Road, Zhengzhou, 450052, Henan Province, China
| | - Wei-Bang Yang
- Department of Hepatobiliary Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, 510120, China
| | - Guo-Lin Li
- Department of Hepatobiliary Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, 510120, China
| | - Pan-Xia Wang
- Laboratory of Pharmacology and Toxicology, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, China
| | - Shao-Bin Wu
- Department of Hepatobiliary Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, 510120, China
| | - Jin-Xin Duan
- Department of Hepatobiliary Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, 510120, China
| | - Wen-Feng Zhuo
- Department of Hepatobiliary Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, 510120, China
| | - Pei-Qing Liu
- Laboratory of Pharmacology and Toxicology, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, China.
| | - Jun Min
- Department of Hepatobiliary Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, 510120, China.
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16
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Abstract
Lethal features of sepsis and acute respiratory distress syndrome (ARDS) relate to the health of small blood vessels. For example, alveolar infiltration with proteinaceous fluid is often driven by breach of the microvascular barrier. Spontaneous thrombus formation within inflamed microvessels exacerbates organ ischemia, and in its final stages, erupts into overt disseminated intravascular coagulation. Disruption of an endothelial signaling axis, the Angiopoietin-Tie2 pathway, may mediate the abrupt transition from microvascular integrity to pathologic disruption. This review summarizes preclinical and clinical results that implicate the Tie2 pathway as a promising target to restore microvascular health in sepsis and ARDS.
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Affiliation(s)
- Kelsey D Sack
- Department of Medicine, Center for Vascular Biology Research, Beth Israel Deaconess Medical Center, Harvard Medical School, 330 Brookline Avenue, RN330C, Boston, MA 02215, USA
| | - John A Kellum
- Department of Critical Care Medicine, CRISMA Center, University of Pittsburgh, University of Pittsburgh, School of Medicine, 3347 Forbes Avenue, Suite 220, Room 202, Pittsburgh, PA 15213, USA
| | - Samir M Parikh
- Department of Medicine, Center for Vascular Biology Research, Beth Israel Deaconess Medical Center, Harvard Medical School, 330 Brookline Avenue, RN330C, Boston, MA 02215, USA.
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17
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Heyba M, Al-Abdullah L, Henkel AW, Sayed Z, Malatiali SA, Redzic ZB. Viability and Contractility of Rat Brain Pericytes in Conditions That Mimic Stroke; an in vitro Study. Front Neurosci 2019; 13:1306. [PMID: 31866815 PMCID: PMC6906154 DOI: 10.3389/fnins.2019.01306] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2019] [Accepted: 11/21/2019] [Indexed: 12/12/2022] Open
Abstract
Reopening of the cerebral artery after occlusion often results in “no-reflow” that has been attributed to the death and contraction (rigor mortis) of pericytes. Since this hypothesis still needs to be confirmed, we explored the effects of oxygen glucose deprivation (OGD) on viability and cell death of primary rat pericytes, in the presence or absence of neurovascular unit-derived cytokines. Two morphodynamic parameters, single cell membrane mobility (SCMM) and fractal dimension (Df), were used to analyze the cell contractions and membrane complexity before and after OGD. We found a marginal reduction in cell viability after 2–6 h OGD; 24 h OGD caused a large reduction in viability and a large increase in the number of apoptotic and dead cells. Application of erythropoietin (EPO), or a combination of EPO and endothelial growth factor (VEGFA1−165) during OGD significantly reduced cell viability; application of Angiopoietin 1 (Ang1) during OGD caused a marginal, insignificant increase in cell viability. Simultaneous application of EPO, VEGFA1−165, and Ang1 significantly increased cell viability during 24 h OGD. Twenty minutes and one hour OGD both significantly reduced SCMM compared to pre-OGD values, while no significant difference was seen in SCMM before and after 3 h OGD. There was a significant decrease in membrane complexity (Df) at 20 min during the OGD that disappeared thereafter. In conclusion, OGD transiently affected cell mobility and shape, which was followed by apoptosis in cultured pericytes. Ang1 may have a potentiality for preventing from the OGD-induced apoptosis. Further studies could clarify the relationship between cell contraction and apoptosis during OGD.
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Affiliation(s)
- Mohammed Heyba
- Department of Physiology, Faculty of Medicine, Kuwait University, Kuwait City, Kuwait
| | - Lulwa Al-Abdullah
- Department of Physiology, Faculty of Medicine, Kuwait University, Kuwait City, Kuwait
| | - Andreas W Henkel
- Department of Physiology, Faculty of Medicine, Kuwait University, Kuwait City, Kuwait
| | - Zeinab Sayed
- Department of Physiology, Faculty of Medicine, Kuwait University, Kuwait City, Kuwait
| | - Slava A Malatiali
- Department of Physiology, Faculty of Medicine, Kuwait University, Kuwait City, Kuwait
| | - Zoran B Redzic
- Department of Physiology, Faculty of Medicine, Kuwait University, Kuwait City, Kuwait
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18
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Haase K, Gillrie MR, Hajal C, Kamm RD. Pericytes Contribute to Dysfunction in a Human 3D Model of Placental Microvasculature through VEGF-Ang-Tie2 Signaling. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2019; 6:1900878. [PMID: 31832308 PMCID: PMC6891921 DOI: 10.1002/advs.201900878] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Revised: 09/18/2019] [Indexed: 05/05/2023]
Abstract
Placental vasculopathies are associated with a number of pregnancy-related diseases, including pre-eclampsia (PE)-a leading cause of maternal-fetal morbidity and mortality worldwide. Placental presentations of PE are associated with endothelial dysfunction, reduced vessel perfusion, white blood cell infiltration, and altered production of angiogenic factors within the placenta (a candidate mechanism). Despite maintaining vascular quiescence in other tissues, how pericytes contribute to vascular growth and signaling in the placenta remains unknown. Here, pericytes are hypothesized to play a detrimental role in the pathogenesis of placental vascular growth. A perfusable triculture model is developed, consisting of human endothelial cells, fibroblasts, and pericytes, capable of recapitulating growth and remodeling in a system that mimics inflamed placental microvessels. Placental pericytes are shown to contribute to growth restriction of microvessels over time, an effect that is strongly regulated by vascular endothelial growth factor and Angiopoietin/Tie2 signaling. Furthermore, this model is capable of recapitulating essential processes including tumor necrosis factor alpha (TNFα)-mediated vascular leakage and leukocyte infiltration, both important aspects associated with placental PE. This placental vascular model highlights that an imbalance in endothelial-pericyte crosstalk can play a critical role in the development of vascular pathology and associated diseases.
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Affiliation(s)
- Kristina Haase
- Massachusetts Institute of TechnologyCambridgeMA02139USA
- Present address:
EMBL BarcelonaCarrer del Dr. Aiguader, 88BarcelonaSpain08003
| | - Mark R. Gillrie
- Massachusetts Institute of TechnologyCambridgeMA02139USA
- Department of MedicineUniversity of CalgaryCalgaryABT2N 1N4Canada
| | - Cynthia Hajal
- Massachusetts Institute of TechnologyCambridgeMA02139USA
| | - Roger D. Kamm
- Massachusetts Institute of TechnologyCambridgeMA02139USA
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19
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Nicolini G, Forini F, Kusmic C, Iervasi G, Balzan S. Angiopoietin 2 signal complexity in cardiovascular disease and cancer. Life Sci 2019; 239:117080. [PMID: 31756341 DOI: 10.1016/j.lfs.2019.117080] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 11/12/2019] [Accepted: 11/13/2019] [Indexed: 12/12/2022]
Abstract
The angiopoietin signal transduction system is a complex of vascular-specific kinase pathways that plays a crucial role in angiogenesis and maintenance of vascular homeostasis. Angiopoietin1 (Ang1) and 2 (Ang2), the ligand proteins of the pathway, belong to a family of glycoproteins that signal primarily through the transmembrane Tyrosine-kinase-2 receptor. Despite a considerable sequence homology, Ang1 and Ang2 manifest antagonistic effects in pathophysiological conditions. While Ang1 promotes the activation of survival pathways and the stabilization of the normal mature vessels, Ang2 can either favor vessel destabilization and leakage or promote abnormal EC proliferation in a context-dependent manner. Altered Ang1/Ang2 balance has been reported in various pathological conditions in association with inflammation and deregulated angiogenesis. In particular, increased Ang2 levels have been documented in human cancer and cardiovascular disease (CVD), including ischemic myocardial injury, heart failure and other cardiovascular complications secondary to diabetes, chronic renal damage and hypertension. Despite the obvious phenotypic differences, CVD and cancer share some common Ang2-dependent etiopathological mechanisms such as inflammation, epithelial (or endothelial) to mesenchymal transition, and adverse vascular network remodeling. Interestingly, both cancer and CVD are negatively affected by thyroid hormone dyshomeostasis. This review provides an overview of the complex Ang2-dependent signaling involved in CVD and cancer, as well as a survey of the related clinical literature. Moreover, on the basis of recent molecular acquisitions in an experimental model of post ischemic cardiac disease, the putative novel role of the thyroid hormone in the regulation of Ang1/Ang2 balance is also briefly discussed.
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Affiliation(s)
| | - Francesca Forini
- Institute of Clinical Physiology, CNR, Via G.Moruzzi 1, 56124 Pisa, Italy.
| | - Claudia Kusmic
- Institute of Clinical Physiology, CNR, Via G.Moruzzi 1, 56124 Pisa, Italy.
| | - Giorgio Iervasi
- Institute of Clinical Physiology, CNR, Via G.Moruzzi 1, 56124 Pisa, Italy.
| | - Silvana Balzan
- Institute of Clinical Physiology, CNR, Via G.Moruzzi 1, 56124 Pisa, Italy.
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20
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Zhang Y, Kontos CD, Annex BH, Popel AS. Angiopoietin-Tie Signaling Pathway in Endothelial Cells: A Computational Model. iScience 2019; 20:497-511. [PMID: 31655061 PMCID: PMC6806670 DOI: 10.1016/j.isci.2019.10.006] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 09/21/2019] [Accepted: 09/30/2019] [Indexed: 12/13/2022] Open
Abstract
The angiopoietin-Tie signaling pathway is an important vascular signaling pathway involved in angiogenesis, vascular stability, and quiescence. Dysregulation in the pathway is linked to the impairments in vascular function associated with many diseases, including cancer, ocular diseases, systemic inflammation, and cardiovascular diseases. The present study uses a computational signaling pathway model validated against experimental data to quantitatively study various mechanistic aspects of the angiopoietin-Tie signaling pathway, including receptor activation, trafficking, turnover, and molecular mechanisms of its regulation. The model provides mechanistic insights into the controversial role of Ang2 and its regulators vascular endothelial protein tyrosine phosphatase (VE-PTP) and Tie1 and predicts synergistic effects of inhibition of VE-PTP, Tie1, and Tie2 cleavage on enhancing the vascular protective actions of Tie2.
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Affiliation(s)
- Yu Zhang
- Department of Biomedical Engineering, School of Medicine, Johns Hopkins University, Baltimore, MD 21205, USA.
| | - Christopher D Kontos
- Department of Medicine, Division of Cardiology, Duke University Medical Center, Durham, NC 27710, USA
| | - Brian H Annex
- Department of Medicine and the Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, GA 30912, USA
| | - Aleksander S Popel
- Department of Biomedical Engineering, School of Medicine, Johns Hopkins University, Baltimore, MD 21205, USA
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21
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Tee JK, Setyawati MI, Peng F, Leong DT, Ho HK. Angiopoietin-1 accelerates restoration of endothelial cell barrier integrity from nanoparticle-induced leakiness. Nanotoxicology 2019; 13:682-700. [PMID: 30776942 DOI: 10.1080/17435390.2019.1571646] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Nanoparticles (NPs) have been widely used in biomedical field for therapeutic treatments, drug carriers, and bio-imaging agent. Recent studies have highlighted the possibility of utilizing inorganic NPs in inducing endothelial leakiness through endothelial remodeling to promote drug transport across the barrier. However, an uncontrolled and persistent leakiness could lead to promiscuous transport of molecules and cells across the barrier, highlighting the pressing need to control the timely recovery from endothelial cell leakiness. Herein, we show that angiopoietin-1 (Ang1) could promote recovery of human microvascular endothelial cells (HMVECs) from titanium dioxide nanoparticle (TiO2 NPs)-induced endothelial leakiness. Ang1 is known as an anti-permeability growth factor which forms complexes with its receptor Tie2 at the cell-to-cell junctions. We find that the introduction of Ang1 not only accelerates the recovery of NP-induced endothelial leakiness (NanoEL) but also promotes cell rigidity by increasing tubulin acetylation, thereby remodels the endothelial cells to further mitigate the effects of NP exposure through the activation of the Akt pathway. Using in vitro metastasis model, we further show that HMVECs treated with TiO2 NPs followed by Ang1 could reduce migration of human skin cancer A431 cells across the endothelial barrier. In summary, Ang1 plays important roles in promoting the recovery of endothelial cell leakiness and endothelial stability through a mechano-transduction pathway and shows great potential as key modulator that allows material scientist to regulate endothelial leakiness induced by NPs.
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Affiliation(s)
- Jie Kai Tee
- a NUS Graduate School for Integrative Sciences & Engineering , National University of Singapore , Singapore , Singapore.,b Department of Pharmacy , National University of Singapore , Singapore , Singapore
| | - Magdiel Inggrid Setyawati
- c Department of Chemical and Biomolecular Engineering , National University of Singapore , Singapore , Singapore
| | - Fei Peng
- b Department of Pharmacy , National University of Singapore , Singapore , Singapore.,c Department of Chemical and Biomolecular Engineering , National University of Singapore , Singapore , Singapore
| | - David Tai Leong
- a NUS Graduate School for Integrative Sciences & Engineering , National University of Singapore , Singapore , Singapore.,c Department of Chemical and Biomolecular Engineering , National University of Singapore , Singapore , Singapore
| | - Han Kiat Ho
- a NUS Graduate School for Integrative Sciences & Engineering , National University of Singapore , Singapore , Singapore.,b Department of Pharmacy , National University of Singapore , Singapore , Singapore
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22
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Tanabe A, Kobayashi D, Maeda K, Taguchi M, Sahara H. Angiogenesis-related gene expression profile in clinical cases of canine cancer. Vet Med Sci 2019; 5:19-29. [PMID: 30265453 PMCID: PMC6376169 DOI: 10.1002/vms3.127] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
The balance between pro- and anti-angiogenic signalling is tightly regulated in normal tissues to maintain the functions of the vasculature. In contrast, the overproduction of angiogenic factors and enhanced angiogenesis are frequently observed in several types of tumours. Although there have been many reports on the correlation between tumour progression and angiogenesis in humans, little is known about tumour angiogenesis in canines. Hence, we attempted to clarify whether angiogenesis contributes to tumour progression in canines as well as humans. In this study, we investigated the expression of several angiogenesis-related genes, including CD34, VEGF-A, VEGFR-1, VEGFR-2, Ang-1, Ang-2, Tie1, and Tie2, in 66 canine tumour tissues and in the normal tissues surrounding the tumours by quantitative real-time PCR analysis. Our comparative analysis between canine tumour tissues and normal tissues revealed that several angiogenesis-related genes, such as vascular endothelial growth factor (VEGF) and VEGF-receptor genes, were significantly upregulated in canine tumour tissues when compared to the normal tissues. We also found that the angiopoietin (Ang)-1/Ang-2 gene expression ratio was lower in canine tumour tissues than in the normal tissues, suggesting less association between vascular endothelial cells and perivascular cells in the canine tumour tissues. Taken together, our results suggest that several angiogenesis-related genes may contribute to the malignant progression of canine tumours via tumour angiogenesis.
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Affiliation(s)
- Atsushi Tanabe
- Laboratory of BiologyAzabu University School of Veterinary MedicineSagamiharaKanagawaJapan
| | - Daisuke Kobayashi
- Laboratory of BiologyAzabu University School of Veterinary MedicineSagamiharaKanagawaJapan
| | - Koki Maeda
- Laboratory of BiologyAzabu University School of Veterinary MedicineSagamiharaKanagawaJapan
| | - Masayuki Taguchi
- Laboratory of BiologyAzabu University School of Veterinary MedicineSagamiharaKanagawaJapan
| | - Hiroeki Sahara
- Laboratory of BiologyAzabu University School of Veterinary MedicineSagamiharaKanagawaJapan
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23
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Bontekoe J, Lee J, Bansal V, Syed M, Hoppensteadt D, Maia P, Walborn A, Liles J, Brailovsky E, Fareed J. Biomarker Profiling in Stage 5 Chronic Kidney Disease Identifies the Relationship between Angiopoietin-2 and Atrial Fibrillation. Clin Appl Thromb Hemost 2018; 24:269S-276S. [PMID: 30370780 PMCID: PMC6707900 DOI: 10.1177/1076029618808909] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Atrial fibrillation (AF) is prevalent in nearly 27% of patients with stage 5 chronic kidney disease on hemodialysis (CKD5-HD), suggesting a strong association between these 2 pathologies. It is hypothesized that the relationship between these 2 diseases may be mediated by inflammation. Angiopoietin-2 (Ang-2), a pro-inflammatory biomarker of endothelial instability, inflammation, and vascular remodeling, is elevated in CKD5-HD and AF, yet has not been evaluated in patients with concomitant AF and CKD5-HD. The aim of this study is to analyze circulating levels of inflammatory and thrombotic biomarkers in patients with concomitant AF and CKD5-HD. Plasma levels of Ang-2 were measured via sandwich enzyme-linked immunosorbent assay method in CKD5-HD patients (n = 96), patients with AF (n = 38), and controls (n = 50). Angiopoietin-2 was markedly elevated in CKD5-HD with comorbid AF as compared to CKD5-HD alone, and AF alone, respectively (13.05 ± 1.56 vs 9.57 ± 0.71 ng/mL; P = .00169; vs 2.48 ± 0.57 ng/mL; P < .0001). The results of this study suggest an additive effect of Ang-2 with coexistence of AF and CKD5-HD, which may be useful in the detection of AF within this patient population.
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Affiliation(s)
- Jack Bontekoe
- Department of Pathology, Loyola University Medical Center, Maywood, IL, USA
| | - Justin Lee
- Department of Pathology, Loyola University Medical Center, Maywood, IL, USA
| | - Vinod Bansal
- Department of Nephrology, Loyola University Medical Center, Maywood, IL, USA
| | - Mushabbar Syed
- Department of Cardiology, Loyola University Medical Center, Maywood, IL, USA
| | - Debra Hoppensteadt
- Department of Pathology, Loyola University Medical Center, Maywood, IL, USA
| | - Paula Maia
- Department of Pathology, Loyola University Medical Center, Maywood, IL, USA
| | - Amanda Walborn
- Department of Pharmacology, Loyola University Medical Center, Maywood, IL, USA
| | - Jeffrey Liles
- Department of Orthopaedic Surgery and Rehabilitation, Loyola University Medical Center, Maywood, IL, USA
| | - Eugene Brailovsky
- Department of Cardiology, Loyola University Medical Center, Maywood, IL, USA
| | - Jawed Fareed
- Department of Pathology, Loyola University Medical Center, Maywood, IL, USA
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24
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Dewi NA, Aulanni'am A, Sujuti H, Widodo MA, Soeatmadji DW. Mechanism of retinal pericyte migration through Angiopoietin/Tie-2 signaling pathway on diabetic rats. Int J Ophthalmol 2018; 11:375-381. [PMID: 29600169 DOI: 10.18240/ijo.2018.03.05] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2017] [Accepted: 01/23/2018] [Indexed: 01/10/2023] Open
Abstract
AIM To investigate the mechanism of pericyte migration through Angiopoietin-2 (Ang-2)/Tie-2 signaling pathway. METHODS We divided the rats into 5 groups. Each diabetic rat model groups injected with Tie-2 inhibitor, ERK1/2 inhibitor, Akt/PKB inhibitor, and DMSO intravitreal. Retinal digest preparation was done to examine the retinal vasculature including pericyte: endothelial ratio, and morphology of pericyte migration. Tie-2, ERK1/2 and Akt/PKB phosporylation were analyzed by confocal laser scanning microscopy. RESULTS There was a correlation between pericyte migration with increasing Ang-2 (P<0.05). Pericyte number reduced by 40% (1:2.4) after 5wk diabetes on diabetic rats. The pericyte: endothelial ratio on group with Tie-2 inhibitor were 1:1.8. The same result shows on group with Akt/PKB inhibition. ERK1/2 inhibitor group shows the best results of pericyte: endothelial ratio (1:1.7). Inhibition on Tie-2 receptor decreased the phosphorylation activity of Tie-2, ERK1/2 and Akt/PKB pathway. ERK1/2 inhibition also decreasing the phosphorylation of Tie-2 and Akt/PKB. But on Akt/PKB inhibition, the phosphorylation of Tie-2 and ERK1/2 were relative the same. CONCLUSION Ang-2 has a role for pericyte migration on diabetic rats through Tie-2 receptor, ERK1/2 and Akt/PKB pathways. ERK1/2 is a dominant pathway based on the ability to supress another pathway activity and decreasing pericyte migration on diabetic rats.
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Affiliation(s)
- Nadia Artha Dewi
- Department of Ophthalmology, Vitreoretinal Subdivision, Faculty of Medicine, Brawijaya University, Malang 65111, Indonesia
| | - Aulanni'am Aulanni'am
- Department of Biochemistry, Faculty of Sciences, Brawijaya University, Malang 65111, Indonesia
| | - Hidayat Sujuti
- Department of Biochemistry, Faculty of Medicine, Brawijaya University, Malang 65111, Indonesia
| | - Muhammad Aris Widodo
- Department of Pharmacology, Faculty of Medicine, Brawijaya University, Malang 65111, Indonesia
| | - Djoko Wahono Soeatmadji
- Department of Endocrinology, Faculty of Medicine, Brawijaya University, Malang 65111, Indonesia
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25
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Al-Zoubi NA, Yaghan RJ, Mazahreh TS, Hijazi EM, Alqudah A, Owaisy YN, Hamouri S, Al-Shatnawi NJ. Evaluation of Plasma Growth Factors (VEGF, PDGF, EGF, ANG1, and ANG2) in Patients with Varicose Veins Before and After Treatment with Endovenous Laser Ablation. Photomed Laser Surg 2018; 36:169-173. [DOI: 10.1089/pho.2017.4355] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Nabil A. Al-Zoubi
- Department of General Surgery, Faculty of Medicine, Jordan University of Science and Technology, Irbid, Jordan
| | - Rami J. Yaghan
- Department of General Surgery, Faculty of Medicine, Jordan University of Science and Technology, Irbid, Jordan
| | - Tagleb S. Mazahreh
- Department of General Surgery, Faculty of Medicine, Jordan University of Science and Technology, Irbid, Jordan
| | - Emad M. Hijazi
- Department of General Surgery, Faculty of Medicine, Jordan University of Science and Technology, Irbid, Jordan
| | | | - Yasmin N. Owaisy
- Department of Laboratories, King Abdullah University Hospital (KAUH), Irbid, Jordan
| | - Shadi Hamouri
- Department of General Surgery, Faculty of Medicine, Jordan University of Science and Technology, Irbid, Jordan
| | - Nawaf J. Al-Shatnawi
- Department of General Surgery, Faculty of Medicine, Jordan University of Science and Technology, Irbid, Jordan
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26
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Han S, Lee SJ, Kim KE, Lee HS, Oh N, Park I, Ko E, Oh SJ, Lee YS, Kim D, Lee S, Lee DH, Lee KH, Chae SY, Lee JH, Kim SJ, Kim HC, Kim S, Kim SH, Kim C, Nakaoka Y, He Y, Augustin HG, Hu J, Song PH, Kim YI, Kim P, Kim I, Koh GY. Amelioration of sepsis by TIE2 activation-induced vascular protection. Sci Transl Med 2017; 8:335ra55. [PMID: 27099174 DOI: 10.1126/scitranslmed.aad9260] [Citation(s) in RCA: 137] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Accepted: 02/26/2016] [Indexed: 12/13/2022]
Abstract
Protection of endothelial integrity has been recognized as a frontline approach to alleviating sepsis progression, yet no effective agent for preserving endothelial integrity is available. Using an unusual anti-angiopoietin 2 (ANG2) antibody, ABTAA (ANG2-binding and TIE2-activating antibody), we show that activation of the endothelial receptor TIE2 protects the vasculature from septic damage and provides survival benefit in three sepsis mouse models. Upon binding to ANG2, ABTAA triggers clustering of ANG2, assembling an ABTAA/ANG2 complex that can subsequently bind and activate TIE2. Compared with a conventional ANG2-blocking antibody, ABTAA was highly effective in augmenting survival from sepsis by strengthening the endothelial glycocalyx, reducing cytokine storms, vascular leakage, and rarefaction, and mitigating organ damage. Together, our data advance the role of TIE2 activation in ameliorating sepsis progression and open a potential therapeutic avenue for sepsis to address the lack of sepsis-specific treatment.
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Affiliation(s)
- Sangyeul Han
- Samsung Advanced Institute of Technology, Suwon, 446-712, Republic of Korea. Center for Vascular Research, Institute for Basic Science, Daejeon 305-701, Republic of Korea.
| | - Seung-Jun Lee
- Center for Vascular Research, Institute for Basic Science, Daejeon 305-701, Republic of Korea. Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701, Republic of Korea
| | - Kyung Eun Kim
- Samsung Advanced Institute of Technology, Suwon, 446-712, Republic of Korea
| | - Hyo Seon Lee
- Samsung Advanced Institute of Technology, Suwon, 446-712, Republic of Korea
| | - Nuri Oh
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701, Republic of Korea
| | - Inwon Park
- Graduate School of Nanoscience and Technology, KAIST, Daejeon 305-701, Republic of Korea
| | - Eun Ko
- Samsung Advanced Institute of Technology, Suwon, 446-712, Republic of Korea
| | - Seung Ja Oh
- Samsung Advanced Institute of Technology, Suwon, 446-712, Republic of Korea
| | - Yoon-Sook Lee
- Samsung Advanced Institute of Technology, Suwon, 446-712, Republic of Korea
| | - David Kim
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701, Republic of Korea
| | - Seungjoo Lee
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701, Republic of Korea
| | - Dae Hyun Lee
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701, Republic of Korea
| | - Kwang-Hoon Lee
- Samsung Advanced Institute of Technology, Suwon, 446-712, Republic of Korea
| | - Su Young Chae
- Samsung Advanced Institute of Technology, Suwon, 446-712, Republic of Korea
| | - Jung-Hoon Lee
- Samsung Advanced Institute of Technology, Suwon, 446-712, Republic of Korea
| | - Su-Jin Kim
- Samsung Advanced Institute of Technology, Suwon, 446-712, Republic of Korea
| | - Hyung-Chan Kim
- Samsung Advanced Institute of Technology, Suwon, 446-712, Republic of Korea
| | - Seokkyun Kim
- Samsung Advanced Institute of Technology, Suwon, 446-712, Republic of Korea
| | - Sung Hyun Kim
- Samsung Advanced Institute of Technology, Suwon, 446-712, Republic of Korea
| | - Chungho Kim
- School of Life Sciences and Technologies, Korea University, Seoul 136-701, Republic of Korea
| | - Yoshikazu Nakaoka
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | - Yulong He
- Cyrus Tang Hematology Center, Soochow University, Suzhou 215123, China
| | - Hellmut G Augustin
- Division of Vascular Oncology and Metastasis, German Cancer Research Center Heidelberg (DKFZ-ZMBH Alliance), 69121 Heidelberg, Germany. Department of Vascular Biology and Tumor Angiogenesis (CBTM), Medical Faculty Mannheim, Heidelberg University, 68167 Mannheim, Germany
| | - Junhao Hu
- Division of Vascular Oncology and Metastasis, German Cancer Research Center Heidelberg (DKFZ-ZMBH Alliance), 69121 Heidelberg, Germany
| | - Paul H Song
- Samsung Advanced Institute of Technology, Suwon, 446-712, Republic of Korea
| | - Yong-In Kim
- Samsung Advanced Institute of Technology, Suwon, 446-712, Republic of Korea
| | - Pilhan Kim
- Graduate School of Nanoscience and Technology, KAIST, Daejeon 305-701, Republic of Korea
| | - Injune Kim
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701, Republic of Korea
| | - Gou Young Koh
- Center for Vascular Research, Institute for Basic Science, Daejeon 305-701, Republic of Korea. Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701, Republic of Korea.
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27
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Al-Sarraf H, Malatiali S, Al-Awadi M, Redzic Z. Effects of erythropoietin on astrocytes and brain endothelial cells in primary culture during anoxia depend on simultaneous signaling by other cytokines and on duration of anoxia. Neurochem Int 2017; 113:34-45. [PMID: 29180303 DOI: 10.1016/j.neuint.2017.11.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Revised: 11/08/2017] [Accepted: 11/22/2017] [Indexed: 12/13/2022]
Abstract
Studies on animals revealed neuroprotective effects of exogenously applied erythropoietin (EPO) during cerebral ischemia/hypoxia. Yet, application of exogenous EPO in stroke patients often lead to haemorrhagic transformation. To clarify potential mechanism of this adverse effect we explored effects of EPO on viabilities of astrocytes and brain endothelial cells (BECs) in primary culture during anoxia of various durations, in the presence or absence of vascular endothelial growth factor (VEGF) and angiopoietin-1 (Ang1), which are cytokines that are also released from the neurovascular unit during hypoxia. Anoxia (2-48 h) exerted marginal effects on BECs' viability and significant reductions in viability of astrocytes. Astrocyte-conditioned medium did not exert effects and exerted detrimental effects on BECs during 2 h and 24 h anoxia, respectively. This was partially reversed by inhibition of Janus kinase (Jak)2/signal transducer and activator of transcription (STAT)5 activation. Addition of rat recombinant EPO (rrEPO) during 2 h-6h anoxia was protective for astrocytes, but had no effect on BECs. Addition of rrEPO significantly reduced viability of BECs and astrocytes after 48 h anoxia and after 24 h-48 h anoxia, respectively, which was attenuated by inhibition of Jak2/STAT5 activation. Simultaneous addition of rrEPO and VEGFA (1-165) caused marginal effects on BECs, but a highly significant protective effects on astrocytes during 24-48 h anoxia, which were attenuated by inhibition of Jak2/STAT5 activation. Simultaneous addition of EPO, VEGFA 1-165 and Ang1 exerted protective effects on BECs during 24 h-48 h anoxia, which were attenuated by addition of soluble Tie2 receptor. These data revealed that EPO could exert protective, but also injurious effects on BECs and astrocytes during anoxia, which depended on the duration of anoxia and on simultaneous signaling by VEGF and Ang1. If these injurious effects occur in stroke patients, they could enhance vascular damage and haemorrhagic transformation.
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Affiliation(s)
- Hameed Al-Sarraf
- Department of Physiology, Faculty of Medicine, Kuwait University, Kuwait
| | - Slava Malatiali
- Department of Physiology, Faculty of Medicine, Kuwait University, Kuwait
| | - Mariam Al-Awadi
- Department of Physiology, Faculty of Medicine, Kuwait University, Kuwait
| | - Zoran Redzic
- Department of Physiology, Faculty of Medicine, Kuwait University, Kuwait.
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28
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TIE2 Associates with Caveolae and Regulates Caveolin-1 To Promote Their Nuclear Translocation. Mol Cell Biol 2017; 37:MCB.00142-17. [PMID: 28760776 DOI: 10.1128/mcb.00142-17] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Accepted: 07/21/2017] [Indexed: 01/20/2023] Open
Abstract
DNA repair pathways are aberrant in cancer, enabling tumor cells to survive standard therapies-chemotherapy and radiotherapy. Our group previously reported that, upon irradiation, the membrane-bound tyrosine kinase receptor TIE2 translocates into the nucleus and phosphorylates histone H4 at Tyr51, recruiting ABL1 to the DNA repair complexes that participate in the nonhomologous end-joining pathway. However, no specific molecular mechanisms of TIE2 endocytosis have been reported. Here, we show that irradiation or ligand-induced TIE2 trafficking is dependent on caveolin-1, the main component of caveolae. Subcellular fractionation and confocal microscopy demonstrated TIE2/caveolin-1 complexes in the nucleus, and using inhibitor or small interfering RNAs (siRNAs) against caveolin-1 or Tie2 inhibited their trafficking. TIE2 was found in caveolae and directly phosphorylated caveolin-1 at Tyr14 in vitro and in vivo This modification regulated the generation of TIE2/caveolin-1 complexes and was essential for TIE2/caveolin-1 nuclear translocation. Our data further demonstrate that the combination of TIE2 and caveolin-1 inhibitors resulted in significant radiosensitization of malignant glioma cells, which will guide the development of combinatorial treatment with radiotherapy for patients with glioblastoma.
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29
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Review of the endothelial pathogenic mechanism of TIE2-related venous malformation. J Vasc Surg Venous Lymphat Disord 2017; 5:740-748. [DOI: 10.1016/j.jvsv.2017.05.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Accepted: 03/11/2017] [Indexed: 11/20/2022]
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30
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Yan ZX, Luo Y, Liu NF. Blockade of angiopoietin-2/Tie2 signaling pathway specifically promotes inflammation-induced angiogenesis in mouse cornea. Int J Ophthalmol 2017; 10:1187-1194. [PMID: 28861341 DOI: 10.18240/ijo.2017.08.01] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Accepted: 06/01/2017] [Indexed: 12/22/2022] Open
Abstract
AIM To investigate angiopoietin-2 (Ang-2)/Tie2 signaling pathway involving in inflammatory angiogenesis. METHODS Three interrupted 11-0 nylon sutures were placed into the corneal stroma of BALB/c mice (6wk old) to induce inflammatory neovascularization. Expression of Ang-2 and Tie2 protein on neovascularization were examined by immunofluorescence. The dynamic expression of Ang-2 mRNA on neovascularization was examined by quantitative real-time reverse transcriptase-polymerase chain reaction (RT-PCR). Finally, the mouse model of suture-induced corneal neovascularization was used to assess the role of Ang-2/Tie2 signaling pathway in inflammatory angiogenesis by systemic application of L1-10, an Ang-2 specific inhibitor. Mouse corneal hemangiogenesis were evaluated by whole mount immunofluorescence. RESULTS Both Ang-2 and Tie2 were expressed on newly generated blood vessels in inflammatory cornea. Ang-2 expression was gradually upregulated around 2wk following injury, which was concurrent with an increased number of blood vessels. Blockade of Ang-2/Tie2 signaling pathway obviously promoted angiogenesis in inflammatory cornea. CONCLUSION Ang-2/Tie2 signaling pathway seems to play an important role during angiogenesis in inflammatory cornea. This may open new therapeutic applications in pathological processes such as corneal graft survival, wound healing and carcinogenesis.
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Affiliation(s)
- Zhi-Xin Yan
- Department of Plastic & Burn Surgery, Affiliated Hospital of Jiangsu University, Zhenjiang 212001, Jiangsu Province, China
| | - Yi Luo
- Department of Plastic & Burn Surgery, Affiliated Hospital of Jiangsu University, Zhenjiang 212001, Jiangsu Province, China
| | - Ning-Fei Liu
- Lymphology Center of Department of Plastic & Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
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Maffei R, Fiorcari S, Martinelli S, Guarnotta C, Benatti S, Belmonte B, Potenza L, Luppi M, Marasca R. Angiopoietin-2 acts as a survival factor for chronic lymphocytic leukemia B cells throughout Tie-2 receptor engagement. Hematol Oncol 2017; 36:372-375. [PMID: 28580615 DOI: 10.1002/hon.2448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Revised: 05/02/2017] [Accepted: 05/08/2017] [Indexed: 11/08/2022]
Affiliation(s)
- Rossana Maffei
- Division of Hematology, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Stefania Fiorcari
- Division of Hematology, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Silvia Martinelli
- Division of Hematology, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Carla Guarnotta
- Department of Human Pathology, University of Palermo, Palermo, Italy
| | - Stefania Benatti
- Division of Hematology, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Beatrice Belmonte
- Department of Human Pathology, University of Palermo, Palermo, Italy
| | - Leonardo Potenza
- Division of Hematology, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Mario Luppi
- Division of Hematology, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Roberto Marasca
- Division of Hematology, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, Modena, Italy
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Burnett A, Gomez I, De Leon DD, Ariaans M, Progias P, Kammerer RA, Velasco G, Marron M, Hellewell P, Ridger V. Angiopoietin-1 enhances neutrophil chemotaxis in vitro and migration in vivo through interaction with CD18 and release of CCL4. Sci Rep 2017; 7:2332. [PMID: 28539655 PMCID: PMC5443761 DOI: 10.1038/s41598-017-02216-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Accepted: 04/06/2017] [Indexed: 01/04/2023] Open
Abstract
Angiopoietins are a family of growth factors that are ligands for the tyrosine kinase receptor, Tie2. Angiopoietin 1 (Ang-1) is agonistic for Tie2, plays a key role in blood vessel maturation and stability and has been shown to possess anti-inflammatory properties. However, Tie2 expression has been demonstrated on human neutrophils and the observation that neutrophils migrate in response to Ang-1 in vitro has confounded research into its exact role in inflammation as well as its potential use as a therapeutic agent. We used a mouse model of peritoneal neutrophilic inflammation to determine if Ang-1 could stimulate neutrophil migration in vivo. Tie2 expression was demonstrated on mouse neutrophils. In addition, recombinant human Ang-1 induced significant chemotaxis of isolated mouse neutrophils in a Tie2- and CD18-dependent manner. Subsequently, co-immunoprecipitation of Ang-1 and CD18 demonstrated their interaction. Intraperitoneal injection of an engineered angiopoietin-1, MAT.Ang-1, induced significant neutrophil migration into the peritoneum and a significant increase in the levels of CCL4 in peritoneal lavage fluid. Depletion of resident peritoneal macrophages prior to, or concomitant injections of an anti-CCL4 antibody with MAT.Ang-1 resulted in a significant reduction in neutrophil recruitment. These data indicate a pro-inflammatory role for Ang-1 with respect to neutrophil recruitment.
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Affiliation(s)
- Amanda Burnett
- Department of Cardiovascular Science, Faculty of Medicine, Dentistry and Health. University of Sheffield, Sheffield, UK
| | - Ingrid Gomez
- Department of Cardiovascular Science, Faculty of Medicine, Dentistry and Health. University of Sheffield, Sheffield, UK
| | - David Davila De Leon
- Department of Biochemistry and Molecular Biology, School of Biology, Complutense University, 28040, Madrid, Spain.,Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Madrid, Spain
| | - Mark Ariaans
- Department of Cardiovascular Science, Faculty of Medicine, Dentistry and Health. University of Sheffield, Sheffield, UK
| | - Pavlos Progias
- Wellcome Trust Centre for Cell-Matrix Research, Faculty of Life Sciences, University of Manchester, Manchester, M13 9PT, UK
| | - Richard A Kammerer
- Laboratory of Biomolecular Research, Division of Biology and Chemistry, Paul Scherrer Institut, CH-5232, Villigen PSI, Switzerland
| | - Guillermo Velasco
- Department of Biochemistry and Molecular Biology, School of Biology, Complutense University, 28040, Madrid, Spain.,Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Madrid, Spain
| | - Marie Marron
- Department of Cardiovascular Science, Faculty of Medicine, Dentistry and Health. University of Sheffield, Sheffield, UK
| | - Paul Hellewell
- College of Health and Life Sciences, Brunel University London, Uxbridge, UB8 3PH, UK
| | - Victoria Ridger
- Department of Cardiovascular Science, Faculty of Medicine, Dentistry and Health. University of Sheffield, Sheffield, UK.
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33
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Liang N, Li Y, Chung HY. Two natural eudesmane-type sesquiterpenes from Laggera alata inhibit angiogenesis and suppress breast cancer cell migration through VEGF- and Angiopoietin 2-mediated signaling pathways. Int J Oncol 2017; 51:213-222. [PMID: 28534941 DOI: 10.3892/ijo.2017.4004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2016] [Accepted: 02/28/2017] [Indexed: 11/06/2022] Open
Abstract
Eudesmane-type sesquiterpenes are natural sesquiterpenes with anti-inflammatory properties, but their anti-angiogenic activities are not known. The present study demonstrated that 5α-hydroxycostic acid and hydroxyisocostic acid, two eudesmane-type sesquiterpenes (ETSs), isolated from the herb Laggera alata, possessed anti-angiogenic effects. Under non-toxic dosage, ETSs suppressed VEGF‑induced proliferation in human umbilical vein endothelial cells (HUVECs) and vessel formation in zebrafish embryos. Moreover, ETSs inhibited VEGF-stimulated HUVEC migration, stress fibers and tube formation. Results from real‑time PCR analysis involving in vivo and in vitro experiments indicated that pro-angiogenic-related mRNA levels were downregulated, including VEGFA, VEGFR2 and Tie2 genes after ETS treatments. Western blot analysis showed that ETSs suppressed VEGF-stimulated VEGFR2 phosphorylation and activation of its downstream molecules, such as Src/AKT/eNOS, FAK, PLCγ/ERK1/2 and p38. Moreover, the VEGF-stimulation of angiopoietin 2 (Ang2) mRNA level increase was significantly downregulated in the presence of ETSs. ETSs inhibited Ang2-induced phosphorylation of the receptor Tie2 in HUVECs, which indicated that ETSs not just suppressed VEGF/VEGFR2 axis, but also the Ang2/Tie2 one. Furthermore, the wound-healing assay revealed that ETSs reduced the migration of Ang2-stimulated human breast cancer (MCF-7) cells. Mechanistically, the anti-migration effect of ETSs correlated with the blockade of Ang2-induced E-cadherin loss and AKT activation. Collectively, the present study suggests that ETSs possess anti-angiogenic ability by interfering the VEGF- and Ang2-related pathways, and they may be good drug candidates.
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Affiliation(s)
- Ning Liang
- Food and Nutritional Sciences Programme, School of Life Sciences, The Chinese University of Hong Kong, Sha Tin, New Territories, Hong Kong, SAR, P.R. China
| | - Yaolan Li
- Institute of Traditional Chinese Medicine and Natural Products, Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University, Guangzhou, Guangdong, P.R. China
| | - Hau Yin Chung
- Food and Nutritional Sciences Programme, School of Life Sciences, The Chinese University of Hong Kong, Sha Tin, New Territories, Hong Kong, SAR, P.R. China
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Gao H, Chen P, Wei L, Xu J, Liu L, Zhao Y, Hara H, Pan D, Li Z, Cooper DKC, Cai Z, Mou L. Angiopoietin-1 and angiopoietin-2 protect porcine iliac endothelial cells from human antibody-mediated complement-dependent cytotoxicity through phosphatidylinositide 3-kinase/AKT pathway activation. Xenotransplantation 2017; 24. [PMID: 28474373 DOI: 10.1111/xen.12309] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Revised: 03/16/2017] [Accepted: 03/27/2017] [Indexed: 01/06/2023]
Abstract
Cytokines play crucial roles in inflammation, but their role in xenotransplantation remains elusive. We assessed the role of several cytokines using an in vitro model of human antibody-mediated complement-dependent cytotoxicity (CDC). Recombinant human angiopoietin-1 (Ang-1) protected porcine iliac endothelial cells (PIECs) from human antibody-mediated CDC. Interestingly, human angiopoietin-2 (Ang-2) had a similar protective effect on PIECs. By flow cytometry analysis, the extent of human IgM and IgG binding to PIECs did not decrease when PIECs were exposed to Ang-1/Ang-2. The mRNA level of complement regulators (CD46, CD55, CD59) was not upregulated in PIECs treated with Ang-1/Ang-2, both of which activated the PI3K/AKT pathway in PIECs. Wortmannin, which inhibits phosphatidylinositide 3-kinase (PI3K), suppressed Ang-1/Ang-2-induced AKT phosphorylation and consequent Ang-1/Ang-2-mediated protection of PIECs in human antibody-mediated CDC model. Moreover, dominant negative AKT also suppressed Ang-1/Ang-2-mediated protection of PIECs in this model. In conclusion, our data suggest that human Ang-1/Ang-2 induces the protection of PIECs from human antibody-mediated CDC by activating the PI3K/AKT pathway. Ang-1/Ang-2 is likely to protect porcine endothelial cells and may be beneficial in xenotransplantation research.
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Affiliation(s)
- Hanchao Gao
- Shenzhen Xenotransplantation Medical Engineering Research and Development Center, Shenzhen Second People's Hospital, First Affiliated Hospital of Shenzhen University, Shenzhen, China.,Department of Biochemistry, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Pengfei Chen
- Shenzhen Xenotransplantation Medical Engineering Research and Development Center, Shenzhen Second People's Hospital, First Affiliated Hospital of Shenzhen University, Shenzhen, China.,Department of Biochemistry, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Ling Wei
- Shenzhen Xenotransplantation Medical Engineering Research and Development Center, Shenzhen Second People's Hospital, First Affiliated Hospital of Shenzhen University, Shenzhen, China
| | - Jia Xu
- Shenzhen Xenotransplantation Medical Engineering Research and Development Center, Shenzhen Second People's Hospital, First Affiliated Hospital of Shenzhen University, Shenzhen, China
| | - Lu Liu
- Shenzhen Xenotransplantation Medical Engineering Research and Development Center, Shenzhen Second People's Hospital, First Affiliated Hospital of Shenzhen University, Shenzhen, China.,Department of Biochemistry, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Yanli Zhao
- Shenzhen Xenotransplantation Medical Engineering Research and Development Center, Shenzhen Second People's Hospital, First Affiliated Hospital of Shenzhen University, Shenzhen, China
| | - Hidetaka Hara
- Thomas E. Starzl Transplantation Institute, University of Pittsburgh, Pittsburgh, PA, USA
| | - Dengke Pan
- Key Laboratory of Farm Animal Genetic Resource and Germplasm Innovation of Ministry of Agriculture, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Zesong Li
- Shenzhen Xenotransplantation Medical Engineering Research and Development Center, Shenzhen Second People's Hospital, First Affiliated Hospital of Shenzhen University, Shenzhen, China
| | - David K C Cooper
- Thomas E. Starzl Transplantation Institute, University of Pittsburgh, Pittsburgh, PA, USA
| | - Zhiming Cai
- Shenzhen Xenotransplantation Medical Engineering Research and Development Center, Shenzhen Second People's Hospital, First Affiliated Hospital of Shenzhen University, Shenzhen, China
| | - Lisha Mou
- Shenzhen Xenotransplantation Medical Engineering Research and Development Center, Shenzhen Second People's Hospital, First Affiliated Hospital of Shenzhen University, Shenzhen, China
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35
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Lukasz A, Hillgruber C, Oberleithner H, Kusche-Vihrog K, Pavenstädt H, Rovas A, Hesse B, Goerge T, Kümpers P. Endothelial glycocalyx breakdown is mediated by angiopoietin-2. Cardiovasc Res 2017; 113:671-680. [PMID: 28453727 DOI: 10.1093/cvr/cvx023] [Citation(s) in RCA: 91] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Accepted: 01/31/2017] [Indexed: 01/01/2023] Open
Abstract
AIMS The endothelial glycocalyx (eGC), a carbohydrate-rich layer lining the luminal surface of the endothelium, provides a first vasoprotective barrier against vascular leakage and adhesion in sepsis and vessel inflammation. Angiopoietin-2 (Angpt-2), an antagonist of the endothelium-stabilizing receptor Tie2 secreted by endothelial cells, promotes vascular permeability through cellular contraction and junctional disintegration. We hypothesized that Angpt-2 might also mediate the breakdown of the eGC. METHODS AND RESULTS Using confocal and atomic force microscopy, we show that exogenous Angpt-2 induces a rapid loss of the eGC in endothelial cells in vitro. Glycocalyx deterioration involves the specific loss of its main constituent heparan sulphate, paralleled by the secretion of the heparan sulphate-specific heparanase from late endosomal/lysosomal stores. Corresponding in vivo experiments revealed that exogenous Angpt-2 leads to heparanase-dependent eGC breakdown, which contributes to plasma leakage and leukocyte recruitment in vivo. CONCLUSION Our data indicate that eGC breakdown is mediated by Angpt-2 in a non-redundant manner.
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Affiliation(s)
- Alexander Lukasz
- Department of Medicine D, Division of General Internal Medicine, Nephrology, and Rheumatology, University Hospital Münster, Albert-Schweitzer-Campus 1, 48149 Münster, Germany
- Institute of Physiology II, University Hospital Münster, Robert-Koch-Straße 27b, 48149 Münster, Germany
| | - Carina Hillgruber
- Department of Dermatology, University Hospital Münster, Von-Esmarch-Straße 58, 48149 Münster, Germany
| | - Hans Oberleithner
- Institute of Physiology II, University Hospital Münster, Robert-Koch-Straße 27b, 48149 Münster, Germany
| | - Kristina Kusche-Vihrog
- Institute of Physiology II, University Hospital Münster, Robert-Koch-Straße 27b, 48149 Münster, Germany
| | - Hermann Pavenstädt
- Department of Medicine D, Division of General Internal Medicine, Nephrology, and Rheumatology, University Hospital Münster, Albert-Schweitzer-Campus 1, 48149 Münster, Germany
| | - Alexandros Rovas
- Department of Medicine D, Division of General Internal Medicine, Nephrology, and Rheumatology, University Hospital Münster, Albert-Schweitzer-Campus 1, 48149 Münster, Germany
| | - Bettina Hesse
- Department of Medicine D, Division of General Internal Medicine, Nephrology, and Rheumatology, University Hospital Münster, Albert-Schweitzer-Campus 1, 48149 Münster, Germany
- Institute of Physiology II, University Hospital Münster, Robert-Koch-Straße 27b, 48149 Münster, Germany
| | - Tobias Goerge
- Department of Dermatology, University Hospital Münster, Von-Esmarch-Straße 58, 48149 Münster, Germany
| | - Philipp Kümpers
- Department of Medicine D, Division of General Internal Medicine, Nephrology, and Rheumatology, University Hospital Münster, Albert-Schweitzer-Campus 1, 48149 Münster, Germany
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Abstract
Tie1 and Tie2, members of the tyrosine kinase family with immunoglobulin and EGF homology domains, are receptor tyrosine kinases found primarily in endothelial cells with key roles in development and maintenance of the vasculature and in angiogenesis. They are attractive targets for therapeutic intervention in tumor angiogenesis, inflammation, and sepsis. Tie2 is regulated directly by the multimeric angiopoietin (Ang) ligands, with Ang1 being its primary activator. Structural studies have shown how Angs bind to the Tie2 ligand-binding region, but do not explain Tie2 activation and suggest a passive role for the Tie2 extracellular region (ECR) in ligand-induced receptor dimerization. Here we show that the Tie2 ECR forms strong dimers even in the absence of bound ligand. Dimerization is mediated by membrane-proximal fibronectin type III (FNIII) domains that were omitted in previous structural studies. We describe a 2.5-Å resolution X-ray crystal structure of the membrane-proximal three Tie2 FNIII domains, Tie2(FNIIIa-c), revealing two possible dimerization modes that primarily involve the third FNIII domain, FNIIIc. Mutating these dimer interfaces implicates one of them (dimer 1) in soluble Tie2 (sTie2) dimerization in solution but suggests that both could play a role in Ang1-induced Tie2 activation, possibly modulated by Tie1. Through small-angle X-ray scattering studies of sTie2 dimers in solution and modeling based on crystal structures, we suggest that Ang1 binding may cross-link Tie2 dimers into higher-order oligomers, potentially explaining how Tie2 is differentially clustered following ligand engagement in different cellular contexts. Our results also firmly implicate FNIII domain-mediated interactions in Tie2 activation, identifying a potential Achilles' heel for therapeutic inhibition.
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37
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Wang Q, Lash GE. Angiopoietin 2 in placentation and tumor biology: The yin and yang of vascular biology. Placenta 2017; 56:73-78. [PMID: 28372817 DOI: 10.1016/j.placenta.2017.03.021] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Revised: 03/27/2017] [Accepted: 03/29/2017] [Indexed: 01/07/2023]
Abstract
There are several parallels between placental and tumor biology. Both require rapid acquisition of a blood supply to supply oxygen and nutrients, the placenta through neoangiogenesis and tumors by co-opting the existing vasculature. In addition, successful pregnancy also requires remodeling of the maternal uterine spiral arteries. Angiopoietins (Angs) are a family of angiogenic growth factors, the best studied being Ang-1 and Ang-2, which signal through the membrane tyrosine kinase receptor Tie2, and in simple terms have opposite effects with Ang-1 acting to stabilize newly formed blood vessels and Ang-2 having a destabilizing effect. The roles of Ang-1, and in particular Ang-2 in placental and tumor biology are discussed in this review.
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Affiliation(s)
- Qiong Wang
- Division of Uterine Vascular Biology, Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou, China
| | - Gendie E Lash
- Division of Uterine Vascular Biology, Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou, China.
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38
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Gong H, Liu M, Klomp J, Merrill BJ, Rehman J, Malik AB. Method for Dual Viral Vector Mediated CRISPR-Cas9 Gene Disruption in Primary Human Endothelial Cells. Sci Rep 2017; 7:42127. [PMID: 28198371 PMCID: PMC5309830 DOI: 10.1038/srep42127] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Accepted: 01/03/2017] [Indexed: 01/13/2023] Open
Abstract
Human endothelial cells (ECs) are widely used to study mechanisms of angiogenesis, inflammation, and endothelial permeability. Targeted gene disruption induced by Clustered Regularly Interspaced Short Palindromic Repeats (CRISPR)-CRISPR-Associated Protein 9 (Cas9) nuclease gene editing is potentially an important tool for definitively establishing the functional roles of individual genes in ECs. We showed that co-delivery of adenovirus encoding EGFP-tagged Cas9 and lentivirus encoding a single guide RNA (sgRNA) in primary human lung microvascular ECs (HLMVECs) disrupted the expression of the Tie2 gene and protein. Tie2 disruption increased basal endothelial permeability and prevented permeability recovery following injury induced by the inflammatory stimulus thrombin. Thus, gene deletion via viral co-delivery of CRISPR-Cas9 in primary human ECs provides a novel platform to investigate signaling mechanisms of normal and perturbed EC function without the need for clonal expansion.
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Affiliation(s)
- Haixia Gong
- Department of Pharmacology, University of Illinois College of Medicine, Chicago, IL 60612, USA
- The Center for Lung and Vascular Biology, University of Illinois College of Medicine, Chicago, IL 60612, USA
| | - Menglin Liu
- Department of Pharmacology, University of Illinois College of Medicine, Chicago, IL 60612, USA
- The Center for Lung and Vascular Biology, University of Illinois College of Medicine, Chicago, IL 60612, USA
| | - Jeff Klomp
- Department of Pharmacology, University of Illinois College of Medicine, Chicago, IL 60612, USA
- The Center for Lung and Vascular Biology, University of Illinois College of Medicine, Chicago, IL 60612, USA
| | - Bradley J. Merrill
- Department of Biochemistry and Molecular Genetics, University of Illinois College of Medicine, Chicago, IL 60612, USA
- Genome Editing Core, University of Illinois College of Medicine, Chicago, IL 60612, USA
| | - Jalees Rehman
- Department of Pharmacology, University of Illinois College of Medicine, Chicago, IL 60612, USA
- The Center for Lung and Vascular Biology, University of Illinois College of Medicine, Chicago, IL 60612, USA
- Division of Cardiology, Department of Medicine, University of Illinois College of Medicine, Chicago, IL 60612, USA
| | - Asrar B. Malik
- Department of Pharmacology, University of Illinois College of Medicine, Chicago, IL 60612, USA
- The Center for Lung and Vascular Biology, University of Illinois College of Medicine, Chicago, IL 60612, USA
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39
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Novel Regulators of Hemodynamics in the Pregnant Uterus. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2017; 145:181-216. [DOI: 10.1016/bs.pmbts.2016.12.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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40
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Dalton AC, Shlamkovitch T, Papo N, Barton WA. Constitutive Association of Tie1 and Tie2 with Endothelial Integrins is Functionally Modulated by Angiopoietin-1 and Fibronectin. PLoS One 2016; 11:e0163732. [PMID: 27695111 PMCID: PMC5047623 DOI: 10.1371/journal.pone.0163732] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Accepted: 09/13/2016] [Indexed: 12/29/2022] Open
Abstract
Functional cross-talk between Tie2 and Integrin signaling pathways is essential to coordinate endothelial cell adhesion and migration in response to the extracellular matrix, yet the mechanisms behind this phenomenon are unclear. Here, we examine the possibility that receptor cross-talk is driven through uncharacterized Tie-integrin interactions on the endothelial surface. Using a live cell FRET-based proximity assay, we monitor Tie-integrin receptor recognition and demonstrate that both Tie1 and Tie2 readily associate with integrins α5ß1 and αVß3 through their respective ectodomains. Although not required, Tie2-integrin association is significantly enhanced in the presence of the extracellular component and integrin ligand fibronectin. In vitro binding assays with purified components reveal that Tie-integrin recognition is direct, and further demonstrate that the receptor binding domain of the Tie2 ligand Ang-1, but not the receptor binding domain of Ang-2, can independently associate with α5ß1 or αVß3. Finally, we reveal that cooperative Tie/integrin interactions selectively stimulate ERK/MAPK signaling in the presence of both Ang-1 and fibronectin, suggesting a molecular mechanism to sensitize Tie2 to extracellular matrix. We provide a mechanistic model highlighting the role of receptor localization and association in regulating distinct signaling cascades and in turn, the angiogenic switch.
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Affiliation(s)
- Annamarie C. Dalton
- Virginia Commonwealth University, Department of Biochemistry and Molecular Biology, Richmond, Virginia, 23298, United States of America
| | - Tomer Shlamkovitch
- Ben-Gurion University of the Negev, Department of Biotechnology Engineering and the National Institute of Biotechnology in the Negev, Beer-Sheva, 8410501, Israel
| | - Niv Papo
- Ben-Gurion University of the Negev, Department of Biotechnology Engineering and the National Institute of Biotechnology in the Negev, Beer-Sheva, 8410501, Israel
| | - William A. Barton
- Virginia Commonwealth University, Department of Biochemistry and Molecular Biology, Richmond, Virginia, 23298, United States of America
- * E-mail:
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41
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Kim M, Allen B, Korhonen EA, Nitschké M, Yang HW, Baluk P, Saharinen P, Alitalo K, Daly C, Thurston G, McDonald DM. Opposing actions of angiopoietin-2 on Tie2 signaling and FOXO1 activation. J Clin Invest 2016; 126:3511-25. [PMID: 27548529 DOI: 10.1172/jci84871] [Citation(s) in RCA: 143] [Impact Index Per Article: 17.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Accepted: 06/24/2016] [Indexed: 01/12/2023] Open
Abstract
Angiopoietin-2 (ANG2) regulates blood vessel remodeling in many pathological conditions through differential effects on Tie2 signaling. While ANG2 competes with ANG1 to inhibit Tie2, it can paradoxically also promote Tie2 phosphorylation (p-Tie2). A related paradox is that both inactivation and overactivation of Tie2 can result in vascular remodeling. Here, we reconciled these opposing actions of ANG2 by manipulating conditions that govern its actions in the vasculature. ANG2 drove vascular remodeling during Mycoplasma pulmonis infection by acting as a Tie2 antagonist, which led to p-Tie2 suppression, forkhead box O1 (FOXO1) activation, increased ANG2 expression, and vessel leakiness. These changes were exaggerated by anti-Tie2 antibody, inhibition of PI3K signaling, or ANG2 overexpression and were reduced by anti-ANG2 antibody or exogenous ANG1. In contrast, under pathogen-free conditions, ANG2 drove vascular remodeling by acting as an agonist, promoting high p-Tie2, low FOXO1 activation, and no leakage. Tie1 activation was strong under pathogen-free conditions, but infection or TNF-α led to Tie1 inactivation by ectodomain cleavage and promoted the Tie2 antagonist action of ANG2. Together, these data indicate that ANG2 activation of Tie2 supports stable enlargement of normal nonleaky vessels, but reduction of Tie1 in inflammation leads to ANG2 antagonism of Tie2 and initiates a positive feedback loop wherein FOXO1-driven ANG2 expression promotes vascular remodeling and leakage.
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42
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Warner MJ, Bridge KS, Hewitson JP, Hodgkinson MR, Heyam A, Massa BC, Haslam JC, Chatzifrangkeskou M, Evans GJO, Plevin MJ, Sharp TV, Lagos D. S6K2-mediated regulation of TRBP as a determinant of miRNA expression in human primary lymphatic endothelial cells. Nucleic Acids Res 2016; 44:9942-9955. [PMID: 27407113 PMCID: PMC5175334 DOI: 10.1093/nar/gkw631] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Revised: 06/16/2016] [Accepted: 07/02/2016] [Indexed: 12/13/2022] Open
Abstract
MicroRNAs (miRNAs) are short non-coding RNAs that silence mRNAs. They are generated following transcription and cleavage by the DROSHA/DGCR8 and DICER/TRBP/PACT complexes. Although it is known that components of the miRNA biogenesis machinery can be phosphorylated, it remains poorly understood how these events become engaged during physiological cellular activation. We demonstrate that S6 kinases can phosphorylate the extended C-terminal domain of TRBP and interact with TRBP in situ in primary cells. TRBP serines 283/286 are essential for S6K-mediated TRBP phosphorylation, optimal expression of TRBP, and the S6K-TRBP interaction in human primary cells. We demonstrate the functional relevance of this interaction in primary human dermal lymphatic endothelial cells (HDLECs). Angiopoietin-1 (ANG1) can augment miRNA biogenesis in HDLECs through enhancing TRBP phosphorylation and expression in an S6K2-dependent manner. We propose that the S6K2/TRBP node controls miRNA biogenesis in HDLECs and provides a molecular link between the mTOR pathway and the miRNA biogenesis machinery.
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Affiliation(s)
- Matthew J Warner
- Centre for Immunology and Infection, Department of Biology and Hull York Medical School, University of York, Wentworth Way, York, YO10 5DD, UK
| | - Katherine S Bridge
- Centre of Molecular Oncology, Barts Cancer Institute, John Vane Science Centre, Charterhouse Square, Queen Mary University London, London, EC1M 6BQ, UK
| | - James P Hewitson
- Centre for Immunology and Infection, Department of Biology and Hull York Medical School, University of York, Wentworth Way, York, YO10 5DD, UK
| | | | - Alex Heyam
- Department of Biology, University of York, Wentworth Way, York, YO10 5DD, UK
| | - Bailey C Massa
- Centre for Immunology and Infection, Department of Biology and Hull York Medical School, University of York, Wentworth Way, York, YO10 5DD, UK
| | - Jessica C Haslam
- Centre for Immunology and Infection, Department of Biology and Hull York Medical School, University of York, Wentworth Way, York, YO10 5DD, UK
| | - Maria Chatzifrangkeskou
- Centre for Immunology and Infection, Department of Biology and Hull York Medical School, University of York, Wentworth Way, York, YO10 5DD, UK
| | - Gareth J O Evans
- Department of Biology, University of York, Wentworth Way, York, YO10 5DD, UK
| | - Michael J Plevin
- Department of Biology, University of York, Wentworth Way, York, YO10 5DD, UK
| | - Tyson V Sharp
- Centre of Molecular Oncology, Barts Cancer Institute, John Vane Science Centre, Charterhouse Square, Queen Mary University London, London, EC1M 6BQ, UK
| | - Dimitris Lagos
- Centre for Immunology and Infection, Department of Biology and Hull York Medical School, University of York, Wentworth Way, York, YO10 5DD, UK
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Siavashi V, Sariri R, Nassiri SM, Esmaeilivand M, Asadian S, Cheraghi H, Barekati-Mowahed M, Rahbarghazi R. Angiogenic activity of endothelial progenitor cells through angiopoietin-1 and angiopoietin-2. Anim Cells Syst (Seoul) 2016. [DOI: 10.1080/19768354.2016.1189961] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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44
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Hossain MB, Shifat R, Johnson DG, Bedford MT, Gabrusiewicz KR, Cortes-Santiago N, Luo X, Lu Z, Ezhilarasan R, Sulman EP, Jiang H, Li SSC, Lang FF, Tyler J, Hung MC, Fueyo J, Gomez-Manzano C. TIE2-mediated tyrosine phosphorylation of H4 regulates DNA damage response by recruiting ABL1. SCIENCE ADVANCES 2016; 2:e1501290. [PMID: 27757426 PMCID: PMC5065225 DOI: 10.1126/sciadv.1501290] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Accepted: 02/25/2016] [Indexed: 05/22/2023]
Abstract
DNA repair pathways enable cancer cells to survive DNA damage induced after genotoxic therapies. Tyrosine kinase receptors (TKRs) have been reported as regulators of the DNA repair machinery. TIE2 is a TKR overexpressed in human gliomas at levels that correlate with the degree of increasing malignancy. Following ionizing radiation, TIE2 translocates to the nucleus, conferring cells with an enhanced nonhomologous end-joining mechanism of DNA repair that results in a radioresistant phenotype. Nuclear TIE2 binds to key components of DNA repair and phosphorylates H4 at tyrosine 51, which, in turn, is recognized by the proto-oncogene ABL1, indicating a role for nuclear TIE2 as a sensor for genotoxic stress by action as a histone modifier. H4Y51 constitutes the first tyrosine phosphorylation of core histones recognized by ABL1, defining this histone modification as a direct signal to couple genotoxic stress with the DNA repair machinery.
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Affiliation(s)
- Mohammad B. Hossain
- Department of Neuro-Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Rehnuma Shifat
- Department of Neuro-Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - David G. Johnson
- Department of Epigenetics and Molecular Carcinogenesis, University of Texas MD Anderson Cancer Center, Science Park, Smithville, TX 78957, USA
| | - Mark T. Bedford
- Department of Epigenetics and Molecular Carcinogenesis, University of Texas MD Anderson Cancer Center, Science Park, Smithville, TX 78957, USA
| | - Konrad R. Gabrusiewicz
- Department of Neuro-Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Nahir Cortes-Santiago
- Department of Neuro-Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Xuemei Luo
- Biomolecular Resource Facility, The University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Zhimin Lu
- Department of Neuro-Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Ravesanker Ezhilarasan
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Erik P. Sulman
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Hong Jiang
- Department of Neuro-Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Shawn S. C. Li
- Department of Biochemistry and the Siebens-Drake Medical Research Institute, Schulich School of Medicine and Dentistry, University of Western Ontario, London, Ontario N6A 5C1, Canada
| | - Frederick F. Lang
- Department of Neurosurgery, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Jessica Tyler
- Department of Epigenetics and Molecular Carcinogenesis, University of Texas MD Anderson Cancer Center, Science Park, Smithville, TX 78957, USA
| | - Mien-Chie Hung
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
- Center for Molecular Medicine and Graduate Institute of Cancer Biology, China Medical University, Taichung 404, Taiwan
| | - Juan Fueyo
- Department of Neuro-Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
- Department of Neurosurgery, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Candelaria Gomez-Manzano
- Department of Neuro-Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
- Department of Genetics, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
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Hutchinson LG, Gaffney EA, Maini PK, Wagg J, Phipps A, Byrne HM. Vascular phenotype identification and anti-angiogenic treatment recommendation: A pseudo-multiscale mathematical model of angiogenesis. J Theor Biol 2016; 398:162-80. [PMID: 26987523 DOI: 10.1016/j.jtbi.2016.03.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Revised: 02/29/2016] [Accepted: 03/03/2016] [Indexed: 12/23/2022]
Abstract
The development of anti-angiogenic drugs for cancer therapy has yielded some promising candidates, but novel approaches for interventions to angiogenesis have led to disappointing results. In addition, there is a shortage of biomarkers that are predictive of response to anti-angiogenic treatments. Consequently, the complex biochemical and physiological basis for tumour angiogenesis remains incompletely understood. We have adopted a mathematical approach to address these issues, formulating a spatially averaged multiscale model that couples the dynamics of VEGF, Ang1, Ang2 and PDGF, with those of mature and immature endothelial cells and pericyte cells. The model reproduces qualitative experimental results regarding pericyte coverage of vessels after treatment by anti-Ang2, anti-VEGF and combination anti-VEGF/anti-Ang2 antibodies. We used the steady state behaviours of the model to characterise angiogenic and non-angiogenic vascular phenotypes, and used mechanistic perturbations representing hypothetical anti-angiogenic treatments to generate testable hypotheses regarding transitions to non-angiogenic phenotypes that depend on the pre-treatment vascular phenotype. Additionally, we predicted a synergistic effect between anti-VEGF and anti-Ang2 treatments when applied to an immature pre-treatment vascular phenotype, but not when applied to a normalised angiogenic pre-treatment phenotype. Based on these findings, we conclude that changes in vascular phenotype are predicted to be useful as an experimental biomarker of response to treatment. Further, our analysis illustrates the potential value of non-spatial mathematical models for generating tractable predictions regarding the action of anti-angiogenic therapies.
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Affiliation(s)
- L G Hutchinson
- Wolfson Centre for Mathematical Biology, Mathematical Institute, University of Oxford, Andrew Wiles Building, Radcliffe Observatory Quarter, Woodstock Road, Oxford OX2 6GG, UK.
| | - E A Gaffney
- Wolfson Centre for Mathematical Biology, Mathematical Institute, University of Oxford, Andrew Wiles Building, Radcliffe Observatory Quarter, Woodstock Road, Oxford OX2 6GG, UK
| | - P K Maini
- Wolfson Centre for Mathematical Biology, Mathematical Institute, University of Oxford, Andrew Wiles Building, Radcliffe Observatory Quarter, Woodstock Road, Oxford OX2 6GG, UK
| | - J Wagg
- Roche Pharmaceutical Research and Early Development, Clinical Pharmacology, Roche Innovation Centre Basel, Switzerland
| | - A Phipps
- Pharma Research and Early Development, Roche Innovation Centre Welwyn, 6 Falcon Way, Shire Park, Welwyn Garden City, AL7 1TW, UK
| | - H M Byrne
- Wolfson Centre for Mathematical Biology, Mathematical Institute, University of Oxford, Andrew Wiles Building, Radcliffe Observatory Quarter, Woodstock Road, Oxford OX2 6GG, UK
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46
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Wu FTH, Lee CR, Bogdanovic E, Prodeus A, Gariépy J, Kerbel RS. Vasculotide reduces endothelial permeability and tumor cell extravasation in the absence of binding to or agonistic activation of Tie2. EMBO Mol Med 2016; 7:770-87. [PMID: 25851538 PMCID: PMC4459817 DOI: 10.15252/emmm.201404193] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Angiopoietin-1 (Ang1) activation of Tie2 receptors on endothelial cells (ECs) reduces adhesion by tumor cells (TCs) and limits junctional permeability to TC diapedesis. We hypothesized that systemic therapy with Vasculotide (VT)—a purported Ang1 mimetic, Tie2 agonist—can reduce the extravasation of potentially metastatic circulating TCs by similarly stabilizing the host vasculature. In vitro, VT and Ang1 treatments impeded endothelial hypermeability and the transendothelial migration of MDA-MB-231•LM2-4 (breast), HT29 (colon), or SN12 (renal) cancer cells to varying degrees. In mice, VT treatment inhibited the transit of TCs through the pulmonary endothelium, but not the hepatic or lymphatic endothelium. In the in vivo LM2-4 model, VT monotherapy had no effect on primary tumors, but significantly delayed distant metastatic dissemination to the lungs. In the post-surgical adjuvant treatment setting, VT therapeutically complemented sunitinib therapy, an anti-angiogenic tyrosine kinase inhibitor which limited the local growth of residual disease. Unexpectedly, detailed investigations into the putative mechanism of action of VT revealed no evidence of Tie2 agonism or Tie2 binding; alternative mechanisms have yet to be determined.
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Affiliation(s)
- Florence T H Wu
- Department of Medical Biophysics, University of Toronto, Toronto, ON, Canada Biological Sciences Platform, Sunnybrook Research Institute, Toronto, ON, Canada
| | - Christina R Lee
- Biological Sciences Platform, Sunnybrook Research Institute, Toronto, ON, Canada
| | - Elena Bogdanovic
- Biological Sciences Platform, Sunnybrook Research Institute, Toronto, ON, Canada
| | - Aaron Prodeus
- Department of Medical Biophysics, University of Toronto, Toronto, ON, Canada Physical Sciences Platform, Sunnybrook Research Institute, Toronto, ON, Canada
| | - Jean Gariépy
- Department of Medical Biophysics, University of Toronto, Toronto, ON, Canada Physical Sciences Platform, Sunnybrook Research Institute, Toronto, ON, Canada
| | - Robert S Kerbel
- Department of Medical Biophysics, University of Toronto, Toronto, ON, Canada Biological Sciences Platform, Sunnybrook Research Institute, Toronto, ON, Canada
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Khan KA, Bicknell R. Anti-angiogenic alternatives to VEGF blockade. Clin Exp Metastasis 2015; 33:197-210. [PMID: 26620208 PMCID: PMC4761368 DOI: 10.1007/s10585-015-9769-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Accepted: 11/11/2015] [Indexed: 12/18/2022]
Abstract
Angiogenesis is a major requirement for tumour formation and development. Anti-angiogenic treatments aim to starve the tumour of nutrients and oxygen and also guard against metastasis. The main anti-angiogenic agents to date have focused on blocking the pro-angiogenic vascular endothelial growth factors (VEGFs). While this approach has seen some success and has provided a proof of principle that such anti-angiogenic agents can be used as treatment, the overall outcome of VEGF blockade has been somewhat disappointing. There is a current need for new strategies in inhibiting tumour angiogenesis; this article will review current and historical examples in blocking various membrane receptors and components of the extracellular matrix important in angiogenesis. Targeting these newly discovered pro-angiogenic proteins could provide novel strategies for cancer therapy.
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Affiliation(s)
- Kabir A Khan
- Angiogenesis Laboratory, Institute for Biomedical Research, School of Cardiovascular Research, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK.
| | - Roy Bicknell
- Angiogenesis Laboratory, Institute for Biomedical Research, School of Cardiovascular Research, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK.
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Nätynki M, Kangas J, Miinalainen I, Sormunen R, Pietilä R, Soblet J, Boon LM, Vikkula M, Limaye N, Eklund L. Common and specific effects of TIE2 mutations causing venous malformations. Hum Mol Genet 2015; 24:6374-89. [PMID: 26319232 DOI: 10.1093/hmg/ddv349] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2015] [Accepted: 08/24/2015] [Indexed: 01/09/2023] Open
Abstract
Venous malformations (VMs) are localized defects in vascular morphogenesis frequently caused by mutations in the gene for the endothelial tyrosine kinase receptor TIE2. Here, we report the analysis of a comprehensive collection of 22 TIE2 mutations identified in patients with VM, either as single amino acid substitutions or as double-mutations on the same allele. Using endothelial cell (EC) cultures, mouse models and ultrastructural analysis of tissue biopsies from patients, we demonstrate common as well as mutation-specific cellular and molecular features, on the basis of which mutations cluster into categories that correlate with data from genetic studies. Comparisons of double-mutants with their constituent single-mutant forms identified the pathogenic contributions of individual changes, and their compound effects. We find that defective receptor trafficking and subcellular localization of different TIE2 mutant forms occur via a variety of mechanisms, resulting in attenuated response to ligand. We also demonstrate, for the first time, that TIE2 mutations cause chronic activation of the MAPK pathway resulting in loss of normal EC monolayer due to extracellular matrix (ECM) fibronectin deficiency and leading to upregulation of plasminogen/plasmin proteolytic pathway. Corresponding EC and ECM irregularities are observed in affected tissues from mouse models and patients. Importantly, an imbalance between plasminogen activators versus inhibitors would also account for high d-dimer levels, a major feature of unknown cause that distinguishes VMs from other vascular anomalies.
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Affiliation(s)
- Marjut Nätynki
- Oulu Center for Cell-Matrix Research, Biocenter Oulu and Faculty of Biochemistry and Molecular Medicine, University of Oulu, Oulu, Finland
| | - Jaakko Kangas
- Oulu Center for Cell-Matrix Research, Biocenter Oulu and Faculty of Biochemistry and Molecular Medicine, University of Oulu, Oulu, Finland
| | | | - Raija Sormunen
- Biocenter Oulu, University of Oulu, Oulu, Finland, Department of Pathology and Oulu University Hospital, University of Oulu, Oulu, Finland
| | - Riikka Pietilä
- Oulu Center for Cell-Matrix Research, Biocenter Oulu and Faculty of Biochemistry and Molecular Medicine, University of Oulu, Oulu, Finland
| | - Julie Soblet
- Human Molecular Genetics, de Duve Institute, and
| | - Laurence M Boon
- Human Molecular Genetics, de Duve Institute, and Center for Vascular Anomalies, Division of Plastic Surgery, Cliniques Universitaires Saint-Luc, Université Catholique de Louvain, Brussels, Belgium
| | | | - Nisha Limaye
- Human Molecular Genetics, de Duve Institute, and
| | - Lauri Eklund
- Oulu Center for Cell-Matrix Research, Biocenter Oulu and Faculty of Biochemistry and Molecular Medicine, University of Oulu, Oulu, Finland,
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49
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Mohammadi E, Nassiri SM, Rahbarghazi R, Siavashi V, Araghi A. Endothelial juxtaposition of distinct adult stem cells activates angiogenesis signaling molecules in endothelial cells. Cell Tissue Res 2015; 362:597-609. [DOI: 10.1007/s00441-015-2228-2] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2014] [Accepted: 05/22/2015] [Indexed: 01/07/2023]
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50
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Bhattacharya D, Chaudhuri S, Singh MK, Chaudhuri S. T11TS inhibits Angiopoietin-1/Tie-2 signaling, EGFR activation and Raf/MEK/ERK pathway in brain endothelial cells restraining angiogenesis in glioma model. Exp Mol Pathol 2015; 98:455-66. [DOI: 10.1016/j.yexmp.2015.03.026] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2015] [Accepted: 03/17/2015] [Indexed: 12/31/2022]
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